阅读说明：本技术 环氧玻璃纤维管的连接端钻孔生产线 (Connecting end drilling production line of epoxy glass fiber tube ) 是由 卫爱静 卫金贵 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种环氧玻璃纤维管的连接端钻孔生产线,包括沿管道传送方向依次设置的进料传送架、抓取装置A、钻孔传送架、抓取装置B和出料传送架,钻孔传送架穿过钻孔机,进料传送架和出料传送架分别设于钻孔传送架两端的同一侧,钻孔传送架的另一侧设有回料传送架,回料传送架的两端分别设有抓取装置C和抓取装置D。从上述结构可知,本发明的环氧玻璃纤维管的连接端钻孔生产线,实现了环氧玻璃纤维管的两端连接端通孔和沉孔的自动加工,提高了生产效率,降低了劳动强度,保证了加工质量。(The invention discloses a drilling production line for a connecting end of an epoxy glass fiber tube, which comprises a feeding conveying frame, a gripping device A, a drilling conveying frame, a gripping device B and a discharging conveying frame which are sequentially arranged along the conveying direction of a pipeline, wherein the drilling conveying frame penetrates through a drilling machine, the feeding conveying frame and the discharging conveying frame are respectively arranged on the same side of two ends of the drilling conveying frame, a return conveying frame is arranged on the other side of the drilling conveying frame, and the gripping device C and the gripping device D are respectively arranged at two ends of the return conveying frame. According to the structure, the connecting end drilling production line of the epoxy glass fiber pipe realizes automatic processing of the through holes and the counter bores of the connecting ends at two ends of the epoxy glass fiber pipe, improves production efficiency, reduces labor intensity and ensures processing quality.)

1. Epoxy glass fiber tube's link drilling production line, its characterized in that: the drilling machine comprises a feeding conveying frame (1), a gripping device A (2), a drilling conveying frame (3), a gripping device B (6) and a discharging conveying frame (7) which are sequentially arranged along the conveying direction of a pipeline, wherein the drilling conveying frame (3) penetrates through a drilling machine (4), the feeding conveying frame (1) and the discharging conveying frame (7) are respectively arranged on the same side of two ends of the drilling conveying frame (3), a material returning conveying frame (9) is arranged on the other side of the drilling conveying frame (3), and a gripping device C (8) and a gripping device D (10) are respectively arranged at two ends of the material returning conveying frame (9); the device comprises a gripping device A (2), a drilling and conveying frame (3), a drilling machine (4), a drilling and conveying machine B (6), a discharging and conveying frame (7) or a gripping device C (8), wherein the gripping device A (2) conveys an epoxy glass fiber tube (66) at the tail end of the feeding and conveying frame (1) or an epoxy glass fiber tube (66) of a gripping device D (10) to the drilling and conveying frame (3), when the epoxy glass fiber tube (66) on the drilling and conveying frame (3) passes through the drilling machine (4), the drilling machine (4) drills a through hole on the end face of a connecting end (67) at the top of the epoxy glass fiber tube (66) and drills a counter bore on a connecting conical surface of the connecting end (67) at the bottom of the epoxy glass fiber tube (66), the gripping device B (6) conveys the epoxy glass fiber tube (66) at the tail end of the drilling and conveying frame (3) to the discharging and conveying frame (7) or the gripping device C (8), the gripping device C (8) rotates the epoxy glass fiber tube (66) upside down and conveys the epoxy glass fiber tube (6) to a returning and conveying frame (9), and the gripping device D (10) conveys the epoxy glass fiber tube (66) at the tail end of the feed back conveying frame (9) to the gripping device D (10).

2. The epoxy glass fiber tube connection end drilling production line of claim 1, wherein: the drilling machine (4) comprises a base (11) and a top seat (12), wherein the base (11) is fixedly connected with the top seat (12) through a stand column (13), the stand column (13) is provided with a plurality of holes uniformly distributed by taking the center of the base (11) as the circle center, a movable seat (14) movably connected up and down along the stand column (13) is further arranged between the base (11) and the top seat (12), the base (11) is fixed with a lifting driving device A (15) of the movable seat (14), the drilling conveying frame (3) is positioned between the movable seat (14) and the top seat (12) and penetrates through the stand column (13), the top surface of the movable seat (14) is provided with a horizontally-rotating turntable A (16), the bottom surface of the top seat (12) is provided with a horizontally-rotating turntable B (17), at least one of the turntable A (16) and the turntable B (17) is an active turntable, when the epoxy glass fiber tube (66) conveyed by the drilling conveying frame (3) corresponds to the rotary table A (16) and the rotary table B (17), the axis of the epoxy glass fiber tube (66), the axis of the rotary table A (16) and the axis of the rotary table B (17) are the same vertical axis, the bottom surface of the rotary table B (17) is higher than the top end of the epoxy glass fiber tube (66), a counter bore processing device is arranged on the top surface of the movable seat (14) and one side of the rotary table A (16), a through hole processing device is arranged on the top surface of the top seat (12) and one side of the rotary table B (17), and the through hole processing device penetrates through the top seat (12) downwards; when the lifting driving device A (15) drives the movable seat (14) to move downwards to the maximum stroke position, the height of the top surface of the rotary table A (16) is lower than the height of the bottom end of the epoxy glass fiber tube (66); the lifting driving device A (15) drives the movable seat (14) to move upwards to axially clamp and fix the epoxy glass limiting pipe (66) between the state A (16) and the rotary table B (17).

3. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: the counter bore processing device comprises a horizontal slide rail seat (20) fixed on the top surface of a movable seat (14), a horizontal movable frame (21) which moves along the radial direction and the horizontal direction of a rotary table A (16) along with the horizontal slide rail seat (20) is arranged on the horizontal slide rail seat (20), a vertical seat A (22) is fixedly arranged on one side, opposite to the rotary table A (16), of the top surface of the horizontal movable frame (21), a lifting movable frame A (23) which moves up and down is arranged on the end surface of one side, facing the rotary table A (16), of the vertical seat A (22), a counter bore drill bit (19) which rotates horizontally is arranged on the bottom surface of the lifting movable frame A (23) and one end, facing the rotary table A (16), of the counter bore drill bit (19) is driven by a drill bit motor A (26) fixed on the lifting movable frame A (23), and the horizontal movable frame (21) is driven by a horizontal driving device (27) fixed on the horizontal slide rail seat (20), the lifting movable frame A (23) is driven by a lifting driving device B (28) fixed on the vertical seat A (22).

4. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: through-hole processingequipment is including the seat B (31) that stands that is fixed in footstock (12) top surface, stand seat B (31) and be equipped with lift adjustable shelf B (30) of activity from top to bottom towards a side end face of revolving stage B (17), lift adjustable shelf B (30) bottom surface, be equipped with horizontal pivoted through-hole drill bit (29) towards the one end of revolving stage B (17), through-hole drill bit (19) are through being fixed in drill bit motor B (32) drive of lift adjustable shelf B (30), lift adjustable shelf B (30) are through being fixed in the lift drive arrangement C (33) drive of standing seat B (31), footstock (12) are equipped with shaft hole B (65) that match with through-hole drill bit (29), stretch out from the bottom surface of footstock (12) behind shaft hole B (65) is passed to the bottom of through-hole drill bit (29), the distance between the axle center of through-hole drill bit (29) and revolving stage B (17) axle center equals that epoxy glass fiber tube (66) tip bored through-hole and epoxy glass fine The distance between the axes of the vascular tubes (66).

5. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: the bottom of revolving stage A (16) is passed through bearing frame (5) and is connected with sliding seat (14) top surface rotation, the top of revolving stage B (17) provides drive power through rotation driving motor A (18), rotation driving motor A (18) fixed connection is in footstock (12) top surface, the output power axle A of rotation driving motor A (18) passes footstock (12) back down and the top of revolving stage B (17) is with axle center fixed connection.

6. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: the bottom edge of the side wall of the rotary table A (16) and the top edge of the side wall of the rotary table B (17) are respectively provided with a limiting convex ring (36), the outer diameter of the rotary table A (16) and the outer diameter of the rotary table B (17) are both equal to the inner diameter of the epoxy glass fiber tube (66), and the outer diameter of the limiting convex ring (36) is less than or equal to the inner diameter of the epoxy glass fiber tube (66); a photoelectric sensor (37) is fixedly connected to one side of the movable seat (14) on the top surface of the rotary table A (16), and the height of the top of the photoelectric sensor (37) is lower than or equal to that of a limiting convex ring (36) of the rotary table A (16).

7. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: the through hole drilling device and the counter bore drilling device are respectively arranged on two opposite sides of a connecting line of the axes of the rotary table A (16) and the rotary table B (17).

8. The epoxy glass fiber tube connection end drilling production line of claim 2, wherein: the feeding conveying frame (1), the drilling conveying frame (3), the discharging conveying frame (7) and the returning conveying frame (9) respectively comprise a pair of upper clamping rails (45) which are horizontally arranged and a pair of lower clamping rails (46) which are horizontally arranged, the upper clamping track (45) and the lower clamping track (46) on the same side are fixedly connected with a vertical frame (47) arranged on the side through a connecting plate (48), the top of the upper clamping track (45) is turned outwards in the direction away from the upper clamping track (45) on the other side, so that the distance between the lower parts of the pair of upper clamping rails (45) is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube (66), the distance between the upper parts of the pair of upper clamping rails (45) is matched with the maximum diameter of the outer side wall of the connecting conical surface between the epoxy glass fiber tube (66) and the connecting end (67) at the corresponding height position, the distance between the lower clamping rails (46) is matched with the maximum diameter of the outer side wall of the epoxy glass fiber pipe (66); the top and the bottom of the upper clamping rail (45) and the top and the bottom of the lower clamping rail (46) are respectively provided with a conveyor belt (49) which is arranged along the horizontal extending direction of the upper clamping rail (45) and the lower clamping rail (46).

9. The epoxy glass fiber tube connection end drilling production line of claim 1, wherein: the gripping device A (2), the gripping device B (6), the gripping device C (8) and the gripping device D (10) all comprise bottom bases, rotating frames which horizontally rotate around vertical middle axes of the bottom bases are arranged at the tops of the bottom bases, rotary driving motors B used for driving the rotating frames to rotate are fixedly connected in the bottom base frames, horizontal telescopic hydraulic cylinders (43) are arranged on one sides of side walls of the rotating frames, the end portions of piston rods B of the horizontal telescopic hydraulic cylinders (43) extend out from one ends, back to the rotating frames, of the piston rods B and are fixedly connected with gripping tongs (42) used for gripping side walls of epoxy glass fiber tubes (66), and the gripping tongs (42) drive the gripping tongs (42) to open or clamp through gripping tongs driving devices (44) arranged at the end portions of the piston rods B (4); a rotary driving motor C (75) for driving the horizontal telescopic hydraulic cylinder (43) to rotate around the axis of the horizontal telescopic hydraulic cylinder (43) relative to the rotating frame is fixedly connected to the rotating frame of the gripping device C (8) and positioned on the opposite side of the horizontal telescopic hydraulic cylinder (43); the height of the clamping pincers (42) of the gripping device A (2) is different from that of the clamping pincers (42) of the gripping device D (10), and the height of the clamping pincers (42) of the gripping device B (6) is different from that of the clamping pincers (42) of the gripping device C (8); the clamping pincers (42) of the gripping device C (8) clamp the central position of the epoxy glass fiber pipe (66).

10. The epoxy glass fiber tube connection end drilling production line of claim 9, wherein: when the clamping pincers (42) respectively face and extend into the feeding conveying frame (1), the drilling conveying frame (3), the discharging conveying frame (7) or the material returning conveying frame (9), when a piston rod B of the horizontal telescopic hydraulic cylinder (43) retracts to the maximum stroke position, the clamping pincers (42) are positioned on the outer sides of the feeding conveying frame (1), the drilling conveying frame (3), the discharging conveying frame (7) and the material returning conveying frame (9); a piston rod B of the horizontal telescopic hydraulic cylinder (43) extends to the maximum stroke, and at the moment, the clamping pincers (42) connected to the piston rod B correspondingly extend into the feeding conveying frame (1), the drilling conveying frame (3), the discharging conveying frame (7) or the return conveying frame (9) respectively; when the gripping pincer (42) of the gripping device A (2) is rotated to face the gripping device D (10) and the gripping pincer (42) of the gripping device D (10) is rotated to face the gripping device A (2), or when the gripping pincer (42) of the gripping device B (6) is rotated to face the gripping device C (8) and the gripping pincer (42) of the gripping device C (8) is rotated to face the gripping device B (6), when the piston rods B extend out of the horizontal telescopic hydraulic cylinders (43), the axis of the clamping pincers (42) of the grabbing device A (2) in the clamping state is coaxial with the axis of the clamping pincers (42) of the grabbing device D (10) in the clamping state, and the axis of the clamping pincers (42) of the grabbing device B (6) in the clamping state is coaxial with the axis of the clamping pincers (42) of the grabbing device C (8) in the clamping state.

Technical Field

The invention relates to the technical field of drilling processing of epoxy glass fiber tubes, in particular to a drilling production line for a connecting end of an epoxy glass fiber tube.

Background

The epoxy tube (epoxy glass fiber tube) is a round rod which is made by soaking electrical alkali-free glass fiber cloth with epoxy resin, baking, hot pressing in a forming die and processing, and has high mechanical property. Dielectric properties and good machinability. The insulating material is not only suitable for being used as an insulating structure part in electrical equipment, but also can be used in transformer oil under the humid environment condition; and the composite material also has the characteristics of ageing resistance, high temperature resistance, corrosion resistance and the like, so that the composite material is widely applied to the industries of petroleum, electric power, chemical industry, papermaking, urban water supply and drainage, factory sewage treatment, seawater desalination, coal gas transportation and the like.

In practical application, because the pipeline is very long, a plurality of epoxy glass fiber tubes are needed to be connected end to form the pipeline, and the less the pipeline connection times in the pipeline arrangement process, the better the sealing property and the pressure resistance of the pipeline. When the insulating structure is used as a part of an insulating structure in electrical equipment, the number of connection times is required to be reduced as much as possible, so that the insulating effect is ensured. However, due to the limitation of production equipment and the convenience of turnover and transportation, the length of a single tube of the epoxy glass fiber tube is improved as much as possible but still does not exceed a certain length, so that the butt joint of the tube and the tube is still required in the actual use process. Among various pipeline butt joint's mode, it is best to connect fixed effect through the bolt, not only conveniently dismantles the maintenance and change, and the cost is also lower moreover. But still because the length of single epoxy glass fiber pipe is longer, so do not have special drilling processingequipment to process during drilling processing, can only stand epoxy glass fiber pipe at present and fix after, the operative employee is fixed the back and is drilled the tip of epoxy glass fiber pipe through the frock auxiliary frame that corresponds with the magnetism drill, but because the operating characteristic of magnetism drill, staff's manual operation that must correspond, so lead to the operative employee also to climb to higher position and operate magnetism drill specially. In addition, the end part of the other end can be processed only after the epoxy glass fiber tube with one processed end is turned over by 180 degrees, so that the pipeline processing process needs to be operated and climbed, the efficiency is low, and the labor intensity is high. And a large amount of dust is generated in the drilling process of the epoxy glass fiber tube, so that the influence on the health of operators is great, and the influence on the working environment of a workshop is great. In addition, the connecting end part and the side wall of some epoxy glass fiber tubes with the length far larger than the diameter are connected through a conical surface, so that the strength of the end face is ensured. However, the conical surface may cause the nut or nut of the bolt to be unable to completely contact with the epoxy glass fiber tube, resulting in poor connection effect, so that the processing of the counter bore for the connection through hole needs to be performed on the conical surface, and the processing difficulty of the counter bore is greater than that of normal drilling, not only because it can be performed only from the conical surface, but also in order to ensure that the operation area of the bolt is large enough. The inner diameter of the counter bore is as large as possible, so the counter bore is generally tangent to the outer side wall of the epoxy glass fiber tube, but the inner wall of one side of the counter bore is tangent to the epoxy glass fiber tube, so that the processing equipment of the counter bore is more difficult to erect, and dust generated during processing of the counter bore cannot be collected and discharged through the existing dust hood.

Disclosure of Invention

The invention aims to: the defects of the prior art are overcome, the connecting end drilling production line of the epoxy glass fiber pipe is provided, the automatic processing of the through holes and the counter bores of the connecting ends at the two ends of the epoxy glass fiber pipe is realized, the production efficiency is improved, the labor intensity is reduced, and the processing quality is ensured.

The technical scheme adopted by the invention is as follows:

the drilling production line for the connecting end of the epoxy glass fiber tube comprises a feeding conveying frame, a gripping device A, a drilling conveying frame, a gripping device B and a discharging conveying frame which are sequentially arranged along the conveying direction of a pipeline, wherein the drilling conveying frame penetrates through a drilling machine, the feeding conveying frame and the discharging conveying frame are respectively arranged on the same side of the two ends of the drilling conveying frame, a material returning conveying frame is arranged on the other side of the drilling conveying frame, and the gripping device C and the gripping device D are respectively arranged at the two ends of the material returning conveying frame; the method comprises the following steps that an epoxy glass fiber tube at the tail end of a feeding conveying frame or an epoxy glass fiber tube of a gripping device D is conveyed to a drilling conveying frame by the gripping device A, when the epoxy glass fiber tube on the drilling conveying frame passes through a drilling machine, the drilling machine drills a through hole in the end face of the connecting end at the top of the epoxy glass fiber tube and drills a counter bore in the connecting conical surface of the connecting end at the bottom of the epoxy glass fiber tube, the gripping device B conveys the epoxy glass fiber tube at the tail end of the drilling conveying frame to a discharging conveying frame or a gripping device C, the gripping device C rotates the epoxy glass fiber tube of the gripping device B to be conveyed to a material returning conveying frame after the epoxy glass fiber tube is turned upside down, and the gripping device D conveys the epoxy glass fiber tube at the tail end of the material returning conveying frame to the gripping device D.

The invention has the further improvement scheme that the drilling machine comprises a base and a top seat, the base is fixedly connected with the top seat through an upright column, the upright column is provided with a plurality of movable seats which are uniformly distributed by taking the center of the base as the center of a circle, a movable seat which is movably connected up and down along the upright column is also arranged between the base and the top seat, the base is fixedly provided with a lifting driving device A of the movable seat, a drilling conveying frame is positioned between the movable seat and the top seat and penetrates through the upright column, the top surface of the movable seat is provided with a horizontally rotating turntable A, the bottom surface of the top seat is provided with a horizontally rotating turntable B, at least one of the turntable A and the turntable B is an active turntable, when an epoxy glass fiber tube conveyed by the drilling conveying frame corresponds to the turntable A and the turntable B, the axis of the epoxy glass fiber tube, the axis of the turntable A and the axis of the turntable B are the same vertical axis, the bottom surface of the rotary table B is higher than the top end of the epoxy glass fiber tube, a counter bore processing device is arranged on the top surface of the movable seat and on one side of the rotary table A, a through hole processing device is arranged on the top surface of the top seat and on one side of the rotary table B, and the through hole processing device penetrates through the top seat downwards; when the lifting driving device A drives the movable seat to move downwards to the maximum stroke position, the height of the top surface of the rotary table A is lower than that of the bottom end of the epoxy glass fiber tube; and the lifting driving device A drives the movable seat to move upwards to axially clamp and fix the epoxy glass limiting pipe between the state A and the rotary table B.

According to a further improvement scheme of the invention, the counter bore processing device comprises a horizontal slide rail seat fixed on the top surface of the movable seat, a horizontal movable frame which can move horizontally along the radial direction of the rotary table A along with the horizontal slide rail seat is arranged on the horizontal slide rail seat, a vertical seat A is fixedly arranged on one side, opposite to the rotary table A, of the top surface of the horizontal movable frame, a lifting movable frame A which can move up and down is arranged on the end surface of one side, facing the rotary table A, of the vertical seat A, a counter bore drill bit which can horizontally rotate is arranged on the bottom surface of the lifting movable frame A and one end, facing the rotary table A, of the counter bore drill bit and is driven by a drill bit motor A fixed on the lifting movable frame A, the horizontal movable frame is driven by a horizontal driving device fixed on the horizontal slide rail seat, and the lifting movable frame A is driven by a lifting driving device B fixed on the vertical seat A.

According to a further improvement scheme of the invention, when the horizontal driving device drives the horizontal movable frame to move to the maximum stroke position facing the rotary table A, the distance between the axis of the counter bore drill bit and the axis of the rotary table A is equal to the distance between the axis of the epoxy glass fiber tube and the axis of the counter bore; when the horizontal driving device drives the horizontal movable frame to move to the maximum stroke position away from the rotary table A, the minimum distance between the counter bore drill bit and the axis of the rotary table A is larger than the maximum radius of the connecting end of the epoxy glass fiber pipe.

According to a further improvement scheme of the invention, when the horizontal driving device drives the horizontal movable frame to move to the maximum stroke position facing the rotary table A, the outer side wall of the counter bore drill bit is tangent to the outer side wall of the epoxy glass fiber pipe clamped and fixed by the rotary table A and the rotary table B.

According to a further improved scheme of the invention, the drill motor A is fixedly connected to the top surface of the lifting movable frame A, a power output shaft B of the drill motor A downwards penetrates through a shaft hole A arranged on the lifting movable frame A and then extends downwards, and the top of the counter bore drill is detachably and coaxially and fixedly connected with the output shaft B.

According to a further improved scheme of the invention, the bottom of the lifting movable frame A is fixedly connected with a dust hood A, the top of the lifting movable frame A is fixedly provided with a dust extraction pipe A connected with a negative pressure device, the dust extraction pipe A is communicated with the interior of the dust hood A through a vent hole A arranged on the lifting movable frame A, and the power output shaft B and the counter bore drill bit are positioned in the range of the dust hood A.

According to a further improvement scheme of the invention, the dust hood A comprises a rigid hood body, the top of the rigid hood body is detachably fixed with the lifting movable frame A, one side of the rigid hood body facing the rotary table A is open, the opening of the rigid hood body is detachably and fixedly connected with a flexible hood body, one side of the flexible hood body facing the rigid hood body is also open, the flexible hood body is made of an elastic film, two sides of the opening end of the rigid hood body are respectively and symmetrically fixedly provided with side plates, and the side plates are in fit contact with the inner sides of the side walls of the flexible hood body corresponding to the two sides of the opening and tension the flexible hood body.

According to a further improvement of the invention, the top edge of the side plate is an arc-shaped edge which is arranged in a downward inclination manner along the direction facing the turntable A.

According to a further improvement scheme of the invention, the cover top of the rigid cover body is detachably and fixedly connected to the bottom surface of the lifting movable frame A, the cover top is provided with a shaft hole B matched with the power output shaft B, the cover top is provided with a vent hole B corresponding to the vent hole A, and the dust suction pipe A is communicated with the rigid cover body of the dust suction cover A sequentially through the vent hole A and the vent hole B.

According to a further improved scheme of the invention, a valve plate which horizontally moves in a reciprocating manner along the surface or back to the rotary table A is arranged at the bottom of the cover top in the rigid cover body, the valve plate controls the communication and the closing of the vent hole B, two side edges of the valve plate move along the tops of two side walls in the rigid cover body in parallel to a horizontal track strip arranged on the cover top, and the distance between the top of the horizontal track strip and the cover top is matched with the thickness of the valve plate.

According to a further improved scheme of the invention, the end face of one side, back to the turntable A, of the valve plate is connected with the side wall of one side, back to the turntable A, of the rigid cover body through a spring with pre-pressure, horizontal extension plates are fixedly arranged on the two side edges of the end face of one side, facing the turntable A, of the valve plate respectively, the valve plate and the horizontal extension plates form a U-shaped structure, the surface of each horizontal extension plate extends into the flexible cover body towards one end of the turntable A, and the distance between every two horizontal extension plates is larger than or equal to the diameter of the power output shaft B.

According to a further improved scheme of the invention, a limiting block is fixedly arranged at the bottom of the cover top and at the joint of the cover top and the flexible cover body, a notch matched with the limiting block is arranged at one end, facing the turntable A, of the top of the horizontal extension plate, part of the horizontal extension plate, corresponding to the notch, extends into the flexible cover body to form a push rod, the valve plate drives the horizontal extension plate and the push rod to move towards the turntable A under the action of a spring until the notch is in limiting contact with the limiting block, at the moment, the valve plate closes the vent hole B, and one end, facing the turntable A, of the push rod is located in the flexible cover body or just in contact with the flexible cover body; when the dust hood A needs to collect dust, the ejector rod and the horizontal extension plate drive the valve plate to move to the direction back to the rotary table A against the acting force of the spring until the vent hole B is correspondingly positioned between the horizontal extension plates.

According to a further improved scheme of the invention, horizontal cross rods are symmetrically arranged at one ends of the ejector rods facing the rotary table A respectively, and the horizontal cross rods extend towards the other opposite ejector rod.

According to a further improvement of the invention, the distance between the horizontal cross bars is greater than or equal to the diameter of the power output shaft B.

According to a further improvement scheme of the invention, the length of the ejector rod extending into the flexible cover body is less than or equal to the difference value between the length of the spring when the horizontal extension plate is limited by the limiting block and the length of the spring in a fully compressed state.

According to a further improvement scheme of the invention, the edge of the top of the opening of the flexible cover body is detachably and fixedly connected with the limiting block, and the edge of the side wall of the opening of the flexible cover body is fixedly connected with the connecting part of the side plate and the two side walls of the rigid cover body.

According to a further improvement scheme of the invention, when the lifting driving device B drives the lifting movable frame A to move downwards to the maximum stroke position, the bottom of the counter bore drill bit is flush with the connecting position of the bottom end of the epoxy glass fiber tube and the corresponding connecting conical surface; when the lifting driving device B drives the lifting movable frame A to move upwards to the maximum stroke position, the bottom of the counter bore drill bit is separated from the connecting end of the bottom end of the epoxy glass fiber pipe correspondingly through the connecting conical surface.

According to a further improvement scheme, the through hole machining device comprises a vertical base B fixed on the top surface of a top base, a lifting movable frame B which can move up and down is arranged on the end surface of one side, facing the rotary table B, of the vertical base B, a horizontally-rotating through hole drill bit is arranged on the bottom surface of the lifting movable frame B and one end, facing the rotary table B, of the vertical base B, the through hole drill bit is driven by a drill bit motor B fixed on the lifting movable frame B, the lifting movable frame B is driven by a lifting driving device C fixed on the vertical base B, the top base is provided with a shaft hole B matched with the through hole drill bit, the bottom end of the through hole drill bit extends out of the bottom surface of the top base after penetrating through the shaft hole B, and the distance between the shaft center of the through hole drill bit and the shaft center of the rotary table B is equal to the distance between the shaft center of the through hole drilled at the end part of the epoxy glass fiber tube and the shaft center of the epoxy glass fiber tube.

According to a further improved scheme of the invention, the drill motor B is fixedly connected to the bottom surface of the lifting movable frame B, a power output shaft C of the lifting movable frame B extends downwards and then is detachably and coaxially and fixedly connected with the through hole drill, and the outer diameter of the power output shaft C is smaller than or equal to that of the through hole drill.

According to a further improved scheme of the invention, the bottom of the top seat is also fixedly connected with a dust hood B, the dust hood B is communicated with a dust suction pipe B connected with a negative pressure device, and the shaft hole B is positioned in the range of the dust hood B.

According to a further improved scheme of the invention, the height of the bottom of the dust hood B is greater than or equal to the height of the top surface of the rotary table B.

According to a further improvement of the invention, the dust extraction pipe B is positioned on the end surface of one side of the dust hood B, which is back to the rotary table B.

According to a further improved scheme of the invention, the bottom of the rotary table A is rotatably connected with the top surface of the movable seat through a bearing seat, the top of the rotary table B provides driving force through a rotary driving motor A, the rotary driving motor A is fixedly connected with the top surface of the top seat, and an output power shaft A of the rotary driving motor A penetrates through the top seat downwards and then is fixedly connected with the top of the rotary table B coaxially.

According to a further improved scheme of the invention, the bottom edge of the side wall of the rotary table A and the top edge of the side wall of the rotary table B are respectively provided with a limiting convex ring, the outer diameter of the rotary table A and the outer diameter of the rotary table B are both equal to the inner diameter of the epoxy glass fiber tube, and the outer diameter of the limiting convex ring is less than or equal to the inner diameter of the epoxy glass fiber tube.

According to a further improvement scheme of the invention, a photoelectric sensor is fixedly connected to one side of the turntable A on the top surface of the movable seat, and the height of the top of the photoelectric sensor is lower than or equal to that of the top of a limiting convex ring of the turntable A.

According to a further improvement scheme of the invention, the through hole drilling device and the counter bore drilling device are respectively arranged on two opposite sides of a connecting line of the axes of the rotary table A and the rotary table B.

In a further improvement of the invention, the upper part of the side wall of the turntable A and the lower part of the side wall of the turntable B are respectively provided with a guiding conical surface.

According to a further improvement scheme of the invention, the bottom surface of the movable seat and the outside-in are coaxially provided with a plurality of annular ribs.

According to a further improved scheme of the invention, the innermost annular rib is encircled to form a limiting fixing groove of the supporting rod, the lifting driving device A is a hydraulic cylinder, the supporting rod is a piston rod A of the lifting driving device A, and the end part of the piston rod A is matched and fixed with the limiting fixing groove.

In a further improvement of the invention, the movable seat is provided with a guide through hole corresponding to the upright post, and the guide through hole is positioned in an annular groove formed between two annular ribs on the outermost side.

The invention has the further improvement scheme that the annular ribs at the outermost side are flush with the outer side edge of the movable seat.

In a further development of the invention, the radial spacing between two adjacent annular ribs is equal.

According to a further improved scheme of the invention, the bottom surface of the movable seat is also provided with a plurality of radial ribs which are arranged in the radial direction, and the radial ribs are uniformly distributed by taking the center of the movable seat as a circle center.

According to a further improvement scheme, the feeding conveying frame, the drilling conveying frame, the discharging conveying frame and the material returning conveying frame respectively comprise a pair of upper clamping rails and a pair of lower clamping rails, the upper clamping rails and the lower clamping rails on the same side are fixedly connected with the vertical frame arranged on the side through connecting plates, the top of each upper clamping rail is turned outwards in a direction far away from the corresponding upper clamping rail on the other side, so that the distance between the lower parts of the pair of upper clamping rails is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube, the distance between the upper parts of the pair of upper clamping rails is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube at the corresponding height position of the outer side wall of the connecting conical surface between the epoxy glass fiber tube and the connecting end, and the distance between the lower clamping rails is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube.

According to a further improvement scheme of the invention, the top and the bottom of the upper clamping track and the top and the bottom of the lower clamping track are respectively provided with a conveyor belt arranged along the horizontal extending direction of the upper clamping track and the lower clamping track.

According to a further improved scheme of the invention, each of the gripping device A, the gripping device B, the gripping device C and the gripping device D comprises a bottom base, a rotating frame which horizontally rotates around a vertical central axis of the bottom base is arranged at the top of the bottom base, a rotary driving motor B for driving the rotating frame to rotate is fixedly connected in the bottom base frame, a horizontal telescopic hydraulic cylinder is arranged on one side of the side wall of the rotating frame, the end part of a piston rod B of the horizontal telescopic hydraulic cylinder extends out from one end back to the rotating frame and is fixedly connected with a gripping clamp for gripping the side wall of the epoxy glass fiber tube, and the gripping clamp drives the gripping clamp to open or clamp through a gripping clamp driving device arranged at the end part of the piston rod B.

According to a further improvement scheme of the invention, when the clamping pincers respectively face the feeding conveying frame, the drilling conveying frame, the discharging conveying frame or the returning conveying frame and the piston rod B of the horizontal telescopic hydraulic cylinder retracts to the maximum stroke position, the clamping pincers are clamped at the outer sides of the feeding conveying frame, the drilling conveying frame, the discharging conveying frame and the returning conveying frame; a piston rod B of the horizontal telescopic hydraulic cylinder extends to the maximum stroke position, and the clamping pincers connected to the piston rod B correspondingly extend into the feeding conveying frame, the drilling conveying frame, the discharging conveying frame or the returning conveying frame at the moment.

According to a further improvement scheme of the invention, when the clamping pincers of the grabbing device A rotate to face the grabbing device D and the clamping pincers of the grabbing device D rotate to face the grabbing device A, or when the clamping pincers of the grabbing device B rotate to face the grabbing device C and the clamping pincers of the grabbing device C rotate to face the grabbing device B, and the piston rods B extend out of the horizontal telescopic hydraulic cylinder, the axis of the clamping pincers of the grabbing device A in the clamping state is coaxial with the axis of the grabbing pincers of the grabbing device D in the clamping state, and the axis of the clamping pincers of the grabbing device B in the clamping state is coaxial with the axis of the grabbing pincers of the grabbing device C in the clamping state.

According to a further improvement of the invention, the height of the gripping tongs of the gripping device A is different from the height of the gripping tongs of the gripping device D, and the height of the gripping tongs of the gripping device B is different from the height of the gripping tongs of the gripping device C.

According to a further improvement of the invention, the gripping pliers of the gripping device C grip the central position of the epoxy glass fiber tube.

According to a further improved scheme of the invention, a rotary driving motor C for driving the horizontal telescopic hydraulic cylinder to rotate around the axis of the horizontal telescopic hydraulic cylinder relative to the rotating frame is fixedly connected to the rotating frame of the gripping device C and positioned on the opposite side of the horizontal telescopic hydraulic cylinder.

The invention has the beneficial effects that:

first, the connecting end drilling production line of the epoxy glass fiber tube realizes automatic processing of the through holes and the counter bores of the connecting ends at two ends of the epoxy glass fiber tube, improves production efficiency, reduces labor intensity and ensures processing quality.

Secondly, the connecting end drilling production line of the epoxy glass fiber pipe provided by the invention is used for processing the through holes and the counter bores with various quantity specifications on the connecting ends of the two ends of the epoxy glass fiber pipe, so that the applicability of the drilling production line is improved.

Thirdly, according to the connecting end drilling production line of the epoxy glass fiber tube, the through hole processing device and the counter bore processing device are respectively arranged on the two corresponding sides, so that when the through hole of the top connecting end and the counter bore of the bottom connecting end are simultaneously processed, the two sides of the epoxy glass fiber tube can be simultaneously stressed, and the epoxy glass fiber tube is prevented from being damaged when the epoxy glass fiber tube is simultaneously processed up and down.

According to the drilling production line for the connecting end of the epoxy glass fiber pipe, disclosed by the invention, the rigid cover body and the flexible cover body structure arranged on the dust hood A can enable the flexible cover body to be tightly attached to the side wall of the epoxy glass fiber pipe when the counter bore is machined, so that the phenomenon that dust is not easily gathered and sucked away by the dust hood due to the fact that the counter bore is attached to the side wall of the epoxy glass fiber pipe is avoided.

Fifthly, the drilling production line for the connecting end of the epoxy glass fiber pipe, disclosed by the invention, can enable the dust hood A to be suitable for epoxy glass fiber pipes with different side wall curvatures and specifications due to different outer diameters under the action of the flexible hood body, so that the applicability is further improved.

Description of the drawings:

FIG. 1 is a schematic top view of the present invention.

Fig. 2 is a front cross-sectional enlarged schematic view of the drill rig of the present invention.

Fig. 3 is an enlarged bottom view of the elevating platform of the drilling machine.

Fig. 4 is an enlarged schematic view of the feeding conveyor, the drilling conveyor and the discharging conveyor when the gripping device grips.

Fig. 5 is an enlarged schematic view of the gripping device of the feed back transfer rack during gripping.

FIG. 6 is an enlarged cross-sectional view of a dust hood A for drilling machine counter bore machining.

Fig. 7 is a schematic cross-sectional enlarged view of a dust hood B for drilling by a drilling machine.

The specific implementation mode is as follows:

as can be seen from fig. 1 to 7, the epoxy glass fiber tube connection end drilling production line includes a feeding transport frame 1, a gripping device a2, a drilling transport frame 3, a gripping device B6 and a discharging transport frame 7, which are sequentially arranged along a pipeline transport direction, wherein the drilling transport frame 3 passes through a drilling machine 4, the feeding transport frame 1 and the discharging transport frame 7 are respectively arranged on the same side of two ends of the drilling transport frame 3, a material return transport frame 9 is arranged on the other side of the drilling transport frame 3, and two ends of the material return transport frame 9 are respectively provided with a gripping device C8 and a gripping device D10; the gripping device A2 conveys the epoxy glass fiber tube 66 at the tail end of the feeding conveying frame 1 or the epoxy glass fiber tube 66 of the gripping device D10 to the drilling conveying frame 3, when the epoxy glass fiber tube 66 on the drilling conveying frame 3 passes through the drilling machine 4, the drilling machine 4 drills a through hole on the end face of the connecting end 67 at the top of the epoxy glass fiber tube 66 and drills a counter hole on the connecting conical surface of the connecting end 67 at the bottom of the epoxy glass fiber tube 66, the gripping device B6 conveys the epoxy glass fiber tube 66 at the tail end of the drilling conveying frame 3 to the discharging conveying frame 7 or the gripping device C8, the gripping device C8 rotates the epoxy glass fiber tube 66 of the gripping device B6 to be upside down and then conveys the epoxy glass fiber tube 66 to the feed back conveying frame 9, and the gripping device D10 conveys the epoxy glass fiber tube 66 at the tail end of the feed back conveying frame 9 to the gripping device D10.

The drilling machine 4 comprises a base 11 and a top seat 12, the base 11 is fixedly connected with the top seat 12 through an upright column 13, the upright column 13 is provided with a plurality of movable seats which are uniformly distributed by taking the center of the base 11 as a circle center, a movable seat 14 which is movably connected up and down along the upright column 13 is further arranged between the base 11 and the top seat 12, the base 11 is fixed with a lifting driving device A15 of the movable seat 14, the drilling conveying frame 3 is positioned between the movable seat 14 and the top seat 12 and penetrates through the upright column 13, a horizontally rotating turntable A16 is arranged on the top surface of the movable seat 14, a horizontally rotating turntable B17 is arranged on the bottom surface of the top seat 12, at least one of the turntable A16 and the turntable B17 is an active turntable, when an epoxy glass fiber tube 66 conveyed by the drilling conveying frame 3 corresponds to the turntable A16 and the turntable B17, the axis of the epoxy glass fiber tube 66, the axis of the turntable A16 and the axis of the turntable B17 are the same axis, the bottom surface of the rotary table B17 is higher than the top end of the epoxy glass fiber tube 66, a counter bore processing device is arranged on the top surface of the movable seat 14 and on one side of the rotary table A16, a through hole processing device is arranged on the top surface of the top seat 12 and on one side of the rotary table B17, and the through hole processing device penetrates through the top seat 12 downwards; when the lifting driving device A15 drives the movable seat 14 to move downwards to the maximum stroke, the height of the top surface of the turntable A16 is lower than that of the bottom end of the epoxy glass fiber tube 66; the lifting driving device A15 drives the movable seat 14 to move upwards to axially clamp and fix the epoxy glass limiting tube 66 between the state A16 and the turntable B17.

The counter bore processing device comprises a horizontal slide rail seat 20 fixed on the top surface of the movable seat 14, a horizontal movable frame 21 which is radially and horizontally moved along a rotary table A16 is arranged on the horizontal slide rail seat 20, a vertical seat A22 is fixedly arranged on one side, back to the rotary table A16, of the top surface of the horizontal movable frame 21, a lifting movable frame A23 which moves up and down is arranged on the end surface of one side, facing to the rotary table A16, of the vertical seat A22, a horizontal rotating counter bore drill bit 19 is arranged on the bottom surface of the lifting movable frame A23 and facing to one end of the rotary table A16, the counter bore drill bit 19 is driven by a drill bit motor A26 fixed on the lifting movable frame A23, the horizontal movable frame 21 is driven by a horizontal driving device 27 fixed on the horizontal slide rail seat 20, and the lifting movable frame A23 is driven by a lifting driving device B28 fixed on the vertical seat A22.

When the horizontal driving device 27 drives the horizontal movable frame 21 to move to the maximum stroke position facing the rotary table a16, the distance between the axis of the counter bore drill 19 and the axis of the rotary table a16 is equal to the distance between the axis of the epoxy glass fiber tube 66 and the axis of the counter bore; when the horizontal driving device 27 drives the horizontal movable frame 21 to move away from the rotary table A16 to the maximum stroke, the minimum distance between the counter bore drill bit 19 and the axle center of the rotary table A16 is larger than the maximum radius of the connecting end 67 of the epoxy glass fiber tube 66.

When the horizontal drive 27 moves the horizontal movable frame 21 to the maximum stroke facing the turntable a16, the outer side wall of the counter bore drill 19 is tangent to the outer side wall of the epoxy glass fiber tube 66 clamped by the turntable a16 and the turntable B17.

The drill motor A26 is fixedly connected to the top surface of the lifting movable frame A23, a power output shaft B50 of the drill motor A26 downwards penetrates through a shaft hole A53 formed in the lifting movable frame A23 and then extends downwards, and the top of the counter bore drill 19 is detachably and coaxially and fixedly connected with an output shaft B50.

Still fixedly connected with suction hood A24 bottom lift adjustable shelf A23, lift adjustable shelf A23 top is still fixed to be equipped with the dust extraction pipe A25 of being connected with negative pressure device, dust extraction pipe A25 communicates with suction hood A24 in through the air vent A55 that lift adjustable shelf A23 was established, power output shaft B50 and counter bore drill bit 19 are located the within range of suction hood A24.

Dust hood A24 includes that the top can dismantle fixed rigidity cover body 51 with lift adjustable shelf A23, rigidity cover body 51 is uncovered towards one side of revolving stage A16, and the detachably fixedly connected with flexible cover body 52 of opening department of rigidity cover body 51, flexible cover body 52 is also uncovered towards one side of rigidity cover body 51, the material of flexible cover body 52 is the elastic membrane, the both sides of the opening end of rigidity cover body 51 are the fixed curb plate 64 that is equipped with of symmetry respectively, curb plate 64 and flexible cover body 52 are corresponding to the inboard laminating contact of the lateral wall of uncovered both sides to with the tensioning of flexible cover body 52.

The top edge of the side plate 64 is an arc-shaped edge that is provided obliquely downward in a direction facing the turntable a 16.

The cover top 54 of the rigid cover body 51 is detachably and fixedly connected to the bottom surface of the lifting movable frame A23, the cover top 54 is provided with a shaft hole B matched with the power output shaft B50, the cover top 54 is provided with a vent hole B57 corresponding to the vent hole A55, and the dust extraction pipe A25 is communicated with the rigid cover body 51 of the dust hood A24 through a vent hole A55 and a vent hole B56 in sequence.

A valve plate 57 which moves horizontally back and forth along the direction facing or away from the turntable A16 is arranged at the bottom of the cover top 54 in the rigid cover body 51, the valve plate 57 controls the communication and closing of the vent hole B56, two side edges of the valve plate 57 move along the tops of two side walls in the rigid cover body 51 in parallel with a horizontal track bar 60 arranged on the cover top 54, and the distance between the top of the horizontal track bar 60 and the cover top 54 is matched with the thickness of the valve plate 57.

The end face of one side, back to the turntable A16, of the valve plate 57 is connected with the side wall, back to the turntable A16, of the rigid cover body 51 through a spring 61 with pre-pressure, horizontal extension plates 58 are fixedly arranged on two side edges, facing to the turntable A16, of the end face of the valve plate 57 respectively, the valve plate 57 and the horizontal extension plates 58 form a U-shaped structure, one end, facing to the turntable A16, of each horizontal extension plate 58 extends into the flexible cover body 52, and the distance between the horizontal extension plates 58 is larger than or equal to the diameter of the power output shaft B50.

A limiting block 63 is fixedly arranged at the bottom of the cover top 54 and at the joint with the flexible cover body 52, a notch matched with the limiting block 63 is arranged at one end, facing the turntable a16, of the top of the horizontal extension plate 58, a part, corresponding to the notch, of the horizontal extension plate 58 extends into the flexible cover body 52 to form a push rod 59, the valve plate 57 drives the horizontal extension plate 58 and the push rod 59 to move towards the turntable a16 under the action of a spring 61 until the notch is in limiting contact with the limiting block 63, at this time, the valve plate 57 closes the vent hole B56, and one end, facing the turntable a16, of the push rod 59 is positioned in the flexible cover body 52 or just contacts with the flexible cover body 52; when the dust hood a24 needs to perform dust collection, the ejector rod 59 and the horizontal extension plate 58 drive the valve plate 57 to move in a direction back to the turntable a16 against the action force of the spring 61 until the vent hole B56 is correspondingly positioned between the horizontal extension plates 58.

One ends of the top rods 59 facing the rotary table A16 are respectively and symmetrically provided with a horizontal cross rod 62, and the horizontal cross rod 62 extends towards the other opposite top rod 59.

The distance between the horizontal cross rods 62 is larger than or equal to the diameter of the power output shaft B50.

The length of the top rod 59 extending into the flexible cover 52 is less than or equal to the difference between the length of the spring 61 when the horizontal extension plate 58 is limited by the limiting block 63 and the length of the spring 61 in a fully compressed state.

The edge of the top of the opening of the flexible cover body 52 is detachably and fixedly connected with the limiting block 63, and the edge of the side wall of the opening of the flexible cover body 52 is fixedly connected with the connecting part of the side plate 64 and the two side walls of the rigid cover body 51.

When the lifting driving device B28 drives the lifting movable frame A23 to move downwards to the maximum stroke, the bottom of the counter bore drill bit 19 is flush with the connecting part of the connecting end 67 at the bottom end of the epoxy glass fiber tube 66 and the corresponding connecting conical surface; when the lifting driving device B28 drives the lifting movable frame A23 to move upwards to the maximum stroke, the bottom of the counter bore drill bit 19 is separated from the corresponding connecting conical surface of the connecting end 67 at the bottom end of the epoxy glass fiber tube 66.

The through hole processing device comprises a vertical seat B31 fixed on the top surface of the top seat 12, a lifting movable frame B30 which can move up and down is arranged on the vertical seat B31 facing to one side end face of the rotary table B17, a lifting movable frame B30 bottom surface and a through hole drill bit 29 which can horizontally rotate is arranged on one end of the lifting movable frame B30 facing to the rotary table B17, the through hole drill bit 19 is driven by a drill bit motor B32 fixed on the lifting movable frame B30, the lifting movable frame B30 is driven by a lifting driving device C33 fixed on the vertical seat B31, the top seat 12 is provided with a shaft hole B65 matched with the through hole drill bit 29, the bottom end of the through hole drill bit 29 penetrates through the shaft hole B65 and then extends out of the bottom surface of the top seat 12, and the distance between the shaft center of the through hole drill bit 29 and the shaft center of the rotary table B17 is equal to the distance between the shaft center of the through hole drilled at the end of the epoxy glass fiber tube 66 and the shaft center of the epoxy fiber tube 66.

The drill motor B32 is fixedly connected to the bottom surface of the lifting movable frame B30, the power output shaft C of the lifting movable frame B30 extends downwards and then is detachably and coaxially and fixedly connected with the through hole drill 29, and the outer diameter of the power output shaft C is smaller than or equal to that of the through hole drill 29.

The bottom of the top seat 12 is also fixedly connected with a dust hood B34, the dust hood B34 is communicated with a dust suction pipe B35 connected with a negative pressure device, and the shaft hole B65 is located in the range of the dust hood B34.

The height of the bottom of the dust hood B34 is greater than or equal to the height of the top surface of the turntable B17.

The dust extraction pipe B35 is positioned on the end face of the dust hood B34, which faces away from the turntable B17.

The bottom of revolving stage A16 passes through bearing frame 5 and is connected with the rotation of movable seat 14 top surface, the top of revolving stage B17 provides drive power through rotary drive motor A18, rotary drive motor A18 fixed connection is in footstock 12 top surface, rotary drive motor A18's output shaft A passes down footstock 12 back and coaxial fixed connection in the top of revolving stage B17.

The bottom edge of the side wall of the turntable A16 and the top edge of the side wall of the turntable B17 are respectively provided with a limiting convex ring 36, the outer diameter of the turntable A16 and the outer diameter of the turntable B17 are both equal to the inner diameter of the epoxy glass fiber tube 66, and the outer diameter of the limiting convex ring 36 is smaller than or equal to the inner diameter of the epoxy glass fiber tube 66.

A photoelectric sensor 37 is fixedly connected to one side of the turntable a16 on the top surface of the movable seat 14, and the top height of the photoelectric sensor 37 is lower than or equal to the top of the limit convex ring 36 of the turntable a 16.

The through hole drilling device and the counter bore drilling device are respectively arranged on two opposite sides of a connecting line of the axes of the rotary table A16 and the rotary table B17.

The upper part of the side wall of the turntable A16 and the lower part of the side wall of the turntable B17 are respectively provided with a guiding conical surface.

The bottom surface and the outside-in coaxial center of the movable seat 14 are provided with a plurality of annular ribs 38.

The innermost annular rib 38 encloses a limiting fixing groove 41 of the supporting rod, the lifting driving device A15 is a hydraulic cylinder, the supporting rod is a piston rod A of the lifting driving device A15, and the end part of the piston rod A is matched and fixed with the limiting fixing groove 41.

The movable seat 14 is provided with a guide through hole 40 corresponding to the upright column 13, and the guide through hole 40 is positioned in an annular groove formed between the two outermost annular ribs 38.

The outermost annular rib 38 is flush with the outer edge of the sliding seat 14.

The radial spacing between two adjacent annular ribs 38 is equal.

The bottom surface of the movable seat 14 is further provided with a plurality of radial ribs 39 which are arranged in the radial direction, and the radial ribs 39 are uniformly distributed by taking the center of the movable seat 14 as a circle center.

The feeding conveying frame 1, the drilling conveying frame 3, the discharging conveying frame 7 and the material returning conveying frame 9 respectively comprise a pair of upper clamping rails 45 and a pair of lower clamping rails 46 which are horizontally arranged, the upper clamping rails 45 and the lower clamping rails 46 on the same side are fixedly connected with a vertical frame 47 arranged on the side through a connecting plate 48, the top of the upper clamping rails 45 is outwards turned in the direction far away from the upper clamping rails 45 on the other side, so that the distance between the lower parts of the upper clamping rails 45 is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube 66, the distance between the upper parts of the upper clamping rails 45 is matched with the maximum diameter of the outer side wall of the connecting conical surface between the epoxy glass fiber tube 66 and the connecting end 67 at the corresponding height position, and the distance between the lower clamping rails 46 is matched with the maximum diameter of the outer side wall of the epoxy glass fiber tube 66.

The top and the bottom of the upper clamping rail 45 and the top and the bottom of the lower clamping rail 46 are provided with conveyor belts 49 arranged along the horizontal extending direction of the upper clamping rail 45 and the lower clamping rail 46.

The gripping device A2, the gripping device B6, the gripping device C8 and the gripping device D10 all comprise a bottom base, a rotating frame which horizontally rotates around a vertical center axis of the bottom base is arranged at the top of the bottom base, a rotary driving motor B for driving the rotating frame to rotate is fixedly connected in the bottom base frame, a horizontal telescopic hydraulic cylinder 43 is arranged on one side of the side wall of the rotating frame, the end part of a piston rod B of the horizontal telescopic hydraulic cylinder 43 extends out from one end back to the rotating frame and is fixedly connected with a gripping clamp 42 for gripping the side wall of the epoxy glass fiber tube 66, and the gripping clamp 42 drives the gripping clamp 42 to open or clamp through a gripping clamp driving device 44 arranged at the end part of the piston rod B4.

When the clamping pincers 42 respectively face and extend into the feeding conveying frame 1, the drilling conveying frame 3, the discharging conveying frame 7 or the returning conveying frame 9 and the piston rod B of the horizontal telescopic hydraulic cylinder 43 retracts to the maximum stroke, the clamping pincers 42 are positioned on the outer sides of the feeding conveying frame 1, the drilling conveying frame 3, the discharging conveying frame 7 and the returning conveying frame 9; the piston rod B of the horizontal telescopic hydraulic cylinder 43 extends to the maximum stroke, and the gripping tongs 42 connected to the piston rod B correspondingly extend into the feeding conveying frame 1, the drilling conveying frame 3, the discharging conveying frame 7 or the returning conveying frame 9.

When gripping pliers 42 of gripping device a2 is rotated to face gripping device D10 and gripping pliers 42 of gripping device D10 is rotated to face gripping device a2, or when gripping pliers 42 of gripping device B6 is rotated to face gripping device C8 and gripping pliers 42 of gripping device C8 is rotated to face gripping device B6, both of the piston rods B extend out of horizontal telescopic hydraulic cylinder 43, the axis of gripping pliers 42 of gripping device a2 in the gripping state is coaxial with the axis of gripping pliers 42 of gripping device D10 in the gripping state, and gripping pliers 42 of gripping device B6 in the gripping state is coaxial with the axis of gripping pliers 42 of axis gripping device C8 in the gripping state.

The gripping pliers 42 of the gripping device a2 are located at a different height from the gripping pliers 42 of the gripping device D10, and the gripping pliers 42 of the gripping device B6 are located at a different height from the gripping pliers 42 of the gripping device C8.

In a further development of the invention, the gripping pliers 42 of the gripping device C8 grip the epoxy glass fiber tube 66 at a central position.

A rotary driving motor C75 for driving the horizontal telescopic hydraulic cylinder 43 to rotate around the axis of the horizontal telescopic hydraulic cylinder 43 relative to the rotating frame is fixedly connected to the rotating frame of the gripping device C8 and is positioned on the opposite side of the horizontal telescopic hydraulic cylinder 43.

When the feeding and conveying device works, the epoxy glass fiber tube 66 is conveyed to the gripping device A2 step by step through the conveying belt 49 of the feeding and conveying frame 1, when the epoxy glass fiber tube 66 is conveyed to the tail end of the feeding and conveying frame 1, the epoxy glass fiber tube 66 is stretched out and positioned by the tail end positioning device A of the feeding and conveying frame 1, and the rotary driving motor B of the gripping device A2 drives the gripping pliers 42 to rotate to face the tail end of the feeding and conveying frame 1; when the conveyor belt 49 of the feeding and conveying frame 1 is in a stop conveying state of step conveying, the gripping pliers 42 of the gripping device a2 are in an open state, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device a2 extends to the maximum stroke, the gripping pliers driving device 44 drives the gripping pliers 42 to clamp and fix the epoxy glass fiber tube 66 at the tail end of the feeding and conveying frame 1, and then after the tail end positioning device a of the feeding and conveying frame 1 retracts, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device a2 retracts to the maximum stroke, and at the moment, the epoxy glass fiber tube 66 leaves the feeding and conveying frame 1 from the tail end under the action of the gripping pliers 42; then, the rotary driving motor B of the grasping apparatus a2 drives the grasping forceps 42 that grasps the epoxy glass fiber tube 66 to rotate to face the starting end of the drilling conveyor 3 again, and the conveyor belt 49 of the feeding conveyor 1 continues to step the epoxy glass fiber tube 66 on the feeding conveyor 1.

Then when the conveyor belt 49 of the drilling conveyor frame 3 is in a stop conveying state of step conveying and the initial end of the drilling conveyor frame 3 does not have the epoxy glass fiber tube 66, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device a2 extends to the maximum stroke position, so that the gripping tongs 42 of the gripping device a2 takes the epoxy glass fiber tube 66 into the drilling conveyor frame 3 and moves to the maximum stroke position of the gripping tongs 42 of the gripping device a2 along the conveying direction of the drilling conveyor frame 3, the gripping tongs driving device 44 drives the gripping tongs 42 to release, so that the gripping tongs 42 are separated from the epoxy glass fiber tube 66, and then the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device a2 retracts to the maximum stroke position, so that the gripping tongs 42 of the gripping device a2 are separated from the drilling conveyor frame 3; the rotary drive motor B of the gripping device a2 drives the gripping tongs 42 to face the end of the feed conveyance rack 1 again; the epoxy glass fiber tubes 66 on the drilling conveyor 3 are stepwise conveyed by the conveyor belt 49 on the drilling conveyor 3.

When the epoxy glass fiber tube 66 on the drilling conveying frame 3 is conveyed to the drilling machine 4 in a stepping manner, the epoxy glass fiber tube 66 is positioned by the positioning device B extending out of the drilling conveying frame 3, when the conveying belt 49 of the drilling conveying frame 3 is in a stopped conveying state of stepping conveying, the positioning device C returns, the drilling machine 4 counts the number of the epoxy glass fiber tube 66 to be the u-th number, then the lifting driving device A15 lifts the movable seat 14 upwards, the movable seat 14 is lifted upwards along the upright post 13, so that the rotary table A16 on the movable seat 14 is contacted with the bottom opening of the inner wall of the epoxy glass fiber tube 66 until the limiting convex ring 36 of the rotary table A16 is contacted with the bottom end of the epoxy glass fiber tube 66, the connecting conical surface of the top connecting end 67 of the epoxy glass fiber tube 66 is driven to be separated from the top folding part of the upper clamping rail 45, the top opening of the inner wall of the epoxy glass fiber tube 66 is continuously lifted until the top opening of the epoxy glass fiber tube is contacted with the rotary table B17, Finally, the top end of the epoxy glass fiber tube 66 is contacted with the limit convex ring 36 of the rotary table B17, and the lifting driving device A15 still maintains acting force, so that the epoxy glass fiber tube 66 is fixed between the rotary table A16 and the rotary table B17.

Then the rotary driving motor a18 is started, and the turntable B17 is driven to drive the epoxy glass fiber tube 66 to rotate 360 degrees around the axis, and in the process of rotating the epoxy glass fiber tube 66, the photoelectric sensor 37 detects and judges whether holes are drilled on the bottom end face of the epoxy glass fiber tube 66, and counts the number of the drilled holes.

When the photoelectric sensor 37 does not detect a hole on the bottom end face of the epoxy glass fiber tube 66, marking the u-th epoxy glass fiber tube 66 as v, and then simultaneously performing through hole drilling and counter bore drilling by the through hole processing device and the counter bore processing device; when the through hole processing device drills, the drill bit motor B32 is started to drive the through hole drill bit 29 to rotate, in addition, the lifting driving device C33 directly drives the through hole drill bit 29 which is in the highest stroke position to drill the end face of the top connecting end 67 of the epoxy glass fiber tube 66 downwards, and the through hole drilling depth is at least larger than the thickness of the connecting end 67; after the drilling depth of the through hole is reached, the lifting driving device C33 drives the through hole drill bit 29 to move upwards to be separated from the epoxy glass fiber pipe 66 until the through hole drill bit returns to the initial position, then the drill bit motor B32 is closed, and dust generated in the through hole drilling process is collected by the dust hood B34 and then is pumped into the dust removal device through the dust extraction pipe B35; when the counterbore processing device drills, the lifting driving device B28 drives the counterbore drill bit 19 to move upwards at the maximum stroke, then the horizontal driving device 27 drives the horizontal movable frame 21 to move towards the rotary table A16, so that the end face of one side, facing the epoxy glass fiber tube 66, of the flexible cover body 52 of the dust hood A24 is in contact joint with the side wall of the epoxy glass fiber tube 66 and moves along with the horizontal movable frame 21, the side wall of the epoxy glass fiber tube 66 extrudes and deforms the end face, facing the epoxy glass fiber tube 66, of the flexible cover body 52 until the counterbore drill bit 19 moves until the distance between the axis of the counterbore drill bit 19 and the axis of the epoxy glass fiber tube 66 is equal to the distance between the axis of the through hole drill bit 29 and the axis of the epoxy glass fiber tube 66, then the drill bit motor B26 is started to drive the counterbore drill bit 19 to rotate, and in addition, the lifting driving device B28 directly drives the counterbore drill bit 19 to downwards to drive the connecting cone between the epoxy glass fiber tube 66 and the bottom connecting end of the epoxy glass fiber tube Drilling holes on the surface, wherein the distance between the bottom surface of the counter bore drilled with the counter bore and the bottom surface of the connecting end at the bottom end of the epoxy glass fiber tube 66 is equal to the thickness of the connecting end 67; after the drilling depth of the counter bore is reached, the lifting driving device B28 drives the counter bore drill bit to move upwards to be separated from the connecting conical surface until the counter bore drill bit returns to the initial position, then the drill bit motor A28 is closed, and the horizontal movable frame 21 returns to the initial position through the horizontal driving device 27; dust generated in the counter bore drilling process is collected by a dust hood A24 and then is pumped into a dust removal device through a dust pumping pipe A25; after the through hole machining device finishes drilling the through holes at the position and the counter bore machining device finishes drilling the counter bores at the corresponding position corresponding to the position, the rotary driving motor A18 is started again, the rotary driving motor B18 stops rotating every time the rotary driving motor B18 rotates 360/n degrees according to the preset number n of drilled holes (n is an even number), and the drilling process is repeated until the machining of the n through holes and the n counter bores is finished.

When the photoelectric sensor 37 detects m holes (m is an even number) on the bottom end face of the epoxy glass fiber tube 66, marking the u-th epoxy glass fiber tube 66 as w, then starting the rotary driving motor a18 again, and stopping the rotation after the photoelectric sensor 37 passes through the first hole and continues to rotate by an angle a (a is the degree of a rotation angle which takes the radius of the movable seat 14 passing through the position of the photoelectric sensor 37 as a starting point and rotates along the rotation direction of the rotary driving motor a18 to the radius of the movable seat 14 passing through the position of the counter bore machining device as an end point), and then simultaneously performing through hole drilling and counter bore drilling by the through hole machining device and the counter bore machining device; when the through hole processing device drills, the drill bit motor B32 is started to drive the through hole drill bit 29 to rotate, in addition, the lifting driving device C33 directly drives the through hole drill bit 29 which is in the highest stroke position to drill the end face of the top connecting end 67 of the epoxy glass fiber tube 66 downwards, and the through hole drilling depth is at least larger than the thickness of the connecting end 67; after the drilling depth of the through hole is reached, the lifting driving device C33 drives the through hole drill bit 29 to move upwards to be separated from the epoxy glass fiber pipe 66 until the through hole drill bit returns to the initial position, then the drill bit motor B32 is closed, and dust generated in the through hole drilling process is collected by the dust hood B34 and then is pumped into the dust removal device through the dust extraction pipe B35; when the counterbore processing device drills, the lifting driving device B28 drives the counterbore drill bit 19 to move upwards at the maximum stroke, then the horizontal driving device 27 drives the horizontal movable frame 21 to move towards the rotary table A16, so that the end face of one side, facing the epoxy glass fiber tube 66, of the flexible cover body 52 of the dust hood A24 is in contact joint with the side wall of the epoxy glass fiber tube 66 and moves along with the horizontal movable frame 21, the side wall of the epoxy glass fiber tube 66 extrudes and deforms the end face, facing the epoxy glass fiber tube 66, of the flexible cover body 52 until the counterbore drill bit 19 moves until the distance between the axis of the counterbore drill bit 19 and the axis of the epoxy glass fiber tube 66 is equal to the distance between the axis of the through hole drill bit 29 and the axis of the epoxy glass fiber tube 66, then the drill bit motor B26 is started to drive the counterbore drill bit 19 to rotate, and in addition, the lifting driving device B28 directly drives the counterbore drill bit 19 to downwards to drive the connecting cone between the epoxy glass fiber tube 66 and the bottom connecting end of the epoxy glass fiber tube Drilling holes on the surface, wherein the distance between the bottom surface of the counter bore drilled with the counter bore and the bottom surface of the connecting end at the bottom end of the epoxy glass fiber tube 66 is equal to the thickness of the connecting end 67; after the drilling depth of the counter bore is reached, the lifting driving device B28 drives the counter bore drill bit to move upwards to be separated from the connecting conical surface until the counter bore drill bit returns to the initial position, then the drill bit motor A28 is closed, and the horizontal movable frame 21 returns to the initial position through the horizontal driving device 27; dust generated in the counter bore drilling process is collected by a dust hood A24 and then is pumped into a dust removal device through a dust pumping pipe A25; after the through hole machining device finishes drilling the through holes at the position and the counter bore machining device finishes drilling the counter bores at the corresponding position corresponding to the position, the rotary driving motor A18 is started again, the rotary driving motor B18 stops rotating every time the rotary driving motor B18 rotates 360/m degrees according to the detected number m of drilled holes (m is an even number), and the drilling process is repeated until the machining of m through holes and m counter bores is finished.

The lifting driving device A15 drives the movable seat 14 to move downwards so as to separate the top end of the epoxy glass fiber tube 66 from the limit convex ring 36 of the rotary table B17, and the top opening of the inner wall of the epoxy glass fiber tube 66 is separated from the rotary table B17 as the movable seat 14 continues to move downwards along the upright post 13; the movable seat 14 drives the epoxy glass fiber tube 66 to continue to move downwards until the connecting conical surface of the top connecting end 67 of the epoxy glass fiber tube 66 is contacted with the top folded part of the upper clamping track 45; as the movable seat 14 continues to descend, the epoxy glass fiber tube 66 is vertically limited by the top folded part of the upper clamping rail 45 through the connecting conical surface of the top connecting end 67, so that the limiting convex ring 36 of the rotary table a16 is separated from the bottom end of the epoxy glass fiber tube 66, and the rotary table a16 is separated from the bottom opening of the inner wall of the epoxy glass fiber tube 66; finally, the movable seat 14 moves downward to the maximum stroke.

The step conveying rhythm of the feeding conveying frame 1, the drilling conveying frame 3, the discharging conveying frame 7 and the returning conveying frame 9 is the same, and the time of the stagnation state in the step conveying process is more than or equal to the time required by the drilling machine to finish all drilling.

When the epoxy glass fiber tube 66 is conveyed to the end of the drilling conveyor 3, the epoxy glass fiber tube 66 is extended and positioned by the end positioning device C of the drilling conveyor 3, and the rotary driving motor B of the gripping device B6 drives the gripping tongs 42 to rotate to face the end of the drilling conveyor 3; when the conveyor belt 49 of the drilling conveyor frame 3 is in a stop conveying state of step conveying, the gripping pliers 42 of the gripping device B6 are in an open state, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device B6 extends to the maximum stroke, the gripping pliers driving device 44 drives the gripping pliers 42 to clamp and fix the epoxy glass fiber tube 66 at the tail end of the drilling conveyor frame 3, and then after the tail end positioning device C of the drilling conveyor frame 3 retracts, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device B6 retracts to the maximum stroke, and at this time, the epoxy glass fiber tube 66 leaves the drilling conveyor frame 3 from the tail end under the action of the gripping pliers 42.

When the epoxy glass fiber tube 66 gripped by the gripping pliers 42 is v, the rotary driving motor B of the gripping device B6 drives the gripping pliers 42 gripping the epoxy glass fiber tube 66 to rotate to the beginning facing the discharging and conveying frame 7, and the conveyor belt 49 of the drilling and conveying frame 3 continues to step and convey the epoxy glass fiber tube 66 on the drilling and conveying frame 3; then when the conveyor belt 49 of the discharging conveying frame 7 is in a conveying stopping state of step conveying and the starting end of the discharging conveying frame 7 does not have the epoxy glass fiber tube 66, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device B6 extends to the maximum stroke position, so that the gripping pliers 42 of the gripping device B6 takes the epoxy glass fiber tube 66 into the discharging conveying frame 7 and moves to the maximum stroke position of the gripping pliers 42 of the gripping device B6 along the conveying direction of the discharging conveying frame 7, the gripping pliers driving device 44 drives the gripping pliers 42 to release, so that the gripping pliers 42 are separated from the epoxy glass fiber tube 66, and then the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device B6 retracts to the maximum stroke position, so that the gripping pliers 42 of the gripping device B6 are separated from the discharging conveying frame 7; then, the rotary driving motor B of the grasping apparatus B6 drives the grasping forceps 42 that grasps the epoxy glass fiber tube 66 to rotate to face the end of the drilling conveyor 3 again, and the epoxy glass fiber tube 66 on the discharging conveyor 7 is stepwise conveyed by the conveyor belt 49 on the discharging conveyor 7.

When the epoxy glass fiber tube 66 gripped by the gripping pliers 42 is w, the rotary driving motor B of the gripping device B6 drives the gripping pliers 42 gripping the epoxy glass fiber tube 66 to rotate to face the gripping device C8, the rotary driving motor B of the gripping device C8 drives the gripping pliers 42 to rotate to face the gripping device B6, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device C8 extends to the maximum stroke, and the gripping pliers driving device 44 of the gripping device C8 drives the gripping pliers 42 to release; then, a piston rod B of a horizontal telescopic hydraulic cylinder 43 of the grabbing device B6 extends to the maximum stroke, and then a gripping clamp driving device 44 of the grabbing device C8 drives a gripping clamp 42 to clamp the epoxy glass fiber tube 66 grabbed by the grabbing device B6; the gripping pliers 42 is driven to be loosened by the gripping pliers driving device 44 of the gripping device B6, then the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device B6 retracts to the maximum stroke, and the rotary driving motor B of the gripping device B6 drives the gripping pliers 42 to rotate to face the tail end of the drilling conveying frame 3 again; then, a rotary driving motor C75 of the grabbing device C8 drives the clamping pincers 42 of the grabbing device C8 to rotate for 180 degrees, so that the epoxy glass fiber tube 66 grabbed by the grabbing device C8 is turned upside down; then, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device C8 retracts to the maximum stroke, and the rotary driving motor B of the gripping device C8 drives the gripping tongs 42 to rotate to face the starting end of the feed back transfer rack 9.

Then when the conveyor belt 49 of the feed back conveying frame 9 is in a stop conveying state of step conveying and the starting end of the discharging conveying frame 9 does not have the epoxy glass fiber tube 66, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device C8 extends to the maximum stroke position, so that the gripping pliers 42 of the gripping device C8 takes the epoxy glass fiber tube 66 into the feed back conveying frame 9 and moves to the maximum stroke position of the gripping pliers 42 of the gripping device C8 along the conveying direction of the feed back conveying frame 9, the gripping pliers driving device 44 drives the gripping pliers 42 to release, so that the gripping pliers 42 are separated from the epoxy glass fiber tube 66, then, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device C8 retracts to the maximum stroke, so that the gripping tongs 42 of the gripping device C8 are separated from the feed back conveying frame 9, and the rotary driving motor B of the gripping device C8 drives the gripping tongs 42 to rotate to face the gripping device B6 again; the epoxy glass fiber tubes 66 on the feed-back conveyor rack 9 are stepwise conveyed by the conveyor belt 49 on the discharge conveyor rack 9.

When the epoxy glass fiber tube 66 is conveyed to the end of the feed back conveying frame 9, the epoxy glass fiber tube 66 is extended and positioned by the end positioning device D of the feed back conveying frame 3, and the rotary driving motor B of the gripping device D10 drives the gripping pliers 42 to rotate to face the end of the feed back conveying frame 9; when the conveyor belt 49 of the feed back conveying frame 9 is in a stop conveying state of stepping conveying, the gripping pliers 42 of the gripping device D10 are in an open state at this time, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device D10 extends to the maximum stroke, the gripping pliers driving device 44 drives the gripping pliers 42 to clamp and fix the epoxy glass fiber tube 66 at the tail end of the feed back conveying frame 9, and then after the tail end positioning device D of the feed back conveying frame 9 retracts, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device D10 retracts to the maximum stroke, and at this time, the epoxy glass fiber tube 66 leaves the feed back conveying frame 9 from the tail end under the action of the gripping pliers 42; the rotary driving motor B of the grasping apparatus D10 drives the gripping tongs 42 to rotate to face the grasping apparatus a 2; a rotary driving motor B of the gripping device A2 drives the gripping tongs 42 to rotate to face the gripping device D10, a gripping tongs driving device 44 of the gripping device A2 drives the gripping tongs 42 to be loosened, and a piston rod B of a horizontal telescopic hydraulic cylinder 43 of the gripping device D10 extends to the maximum stroke; then, a piston rod B of a horizontal telescopic hydraulic cylinder 43 of the gripping device a2 extends to the maximum stroke, and then a gripping clamp driving device 44 of the gripping device a2 drives a gripping clamp 42 to grip the epoxy glass fiber tube 66 gripped by the gripping device D10; the gripping pliers 42 is driven to be loosened by the gripping pliers driving device 44 of the gripping device D10, then the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device D10 retracts to the maximum stroke, and the rotary driving motor B of the gripping device D10 drives the gripping pliers 42 to rotate to face the tail end of the feed back conveying frame 9 again; then, the piston rod B of the horizontal telescopic hydraulic cylinder 43 of the gripping device a2 retracts to the maximum stroke, and the rotary driving motor B of the gripping device a2 drives the gripping tongs 42 to rotate to face the starting end of the drilling carriage 3 again.

The process is repeated, so that the production of automatically drilling through holes and counter bores at two ends of the epoxy glass fiber tube 66 is realized.