阅读说明：本技术 一种方管全自动下料送料装置 (Full-automatic unloading material feeding unit manages in side ) 是由 王超石 夏文龙 李森 彭金昌 黄凤花 于 2019-12-31 设计创作，主要内容包括：本发明涉及方管自动化加工设备技术领域,具体为一种方管全自动下料送料装置,包括进料机构；顶固机构,包括伸缩式顶杆,与所述伸缩式顶杆连接的第一驱动气缸；所述顶杆的伸缩方向与待加工方管的前进方向呈20至30度夹角设置；下料机构,包括下料滑道；下料辊道；支撑板；挡板；推板；升降组件；推框；循环式出料链板。本申请装置能够自动将切割下来的方管段摆放成一个个方管段堆,并将方管段堆逐个移送至循环式出料链板,操作工人只需要及时将循环式出料链板出口端附近的方管段堆移送至搬运小车上即可,不需要时刻等候在加工设备旁边,一个操作工人可对接多个下料机构,因此,大大节省了人力,且有效提高了方管段的下料搬运效率。(The invention relates to the technical field of automatic square tube processing equipment, in particular to a full-automatic square tube discharging and feeding device, which comprises a feeding mechanism; the jacking and fixing mechanism comprises a telescopic ejector rod and a first driving cylinder connected with the telescopic ejector rod; the telescopic direction of the ejector rod and the advancing direction of the square tube to be processed form an included angle of 20-30 degrees; the blanking mechanism comprises a blanking slideway; a blanking roller bed; a support plate; a baffle plate; pushing the plate; a lifting assembly; pushing the frame; circulating ejection of compact link joint. The square pipe section pile that this application device can be automatic will cut off is put into one by one and is piled to square pipe section to transfer to circulating ejection of compact link joint one by one, the operation workman only need in time with near square pipe section pile near circulating ejection of compact link joint exit end transfer to the floor truck on can, need not wait constantly on the processing equipment next door, an operation workman can dock a plurality of unloading mechanisms, consequently, the manpower has been saved greatly, and the unloading handling efficiency of square pipe section has effectively been improved.)

1. The utility model provides a full-automatic unloading material feeding unit in side pipe which characterized in that: comprises that

The feeding mechanism is used for driving the square pipe to be processed to advance along the linear direction;

the jacking and fixing mechanism (2) comprises a telescopic ejector rod and a first driving cylinder connected with the telescopic ejector rod; the free end of the telescopic ejector rod is in abutting connection with the upper right end of the pipe orifice of the square pipe to be processed, and the telescopic direction of the ejector rod and the advancing direction of the square pipe to be processed form an included angle of 20-30 degrees;

the blanking mechanism comprises

The inlet end of the blanking slideway (31) is butted with the end to be cut of the square tube to be processed;

the inlet end of the blanking roller way (32) is butted with the outlet end of the blanking slideway (31);

a support plate (33) with one side butted with one side of the blanking roller bed (32);

the baffle (34) is arranged around the outlet end of the blanking roller way (32) and the rest three sides of the support plate (33);

the push plate (35) is arranged on the other side of the blanking roller way (32), and the back surface of the push plate is connected with the telescopic rod of the second driving cylinder (36);

a lifting component (37), the top of which is connected with the bottom of the supporting plate (33);

the pushing frame (41) is arranged around the lifting assembly (37) and comprises a main plate and two side plates, and the main plate is connected with a telescopic rod of the third driving cylinder (42);

and the inlet end of the circulating discharging chain plate (43) is butted with the pushing frame (41).

2. The full-automatic unloading material feeding unit of square pipe of claim 1, characterized in that: the feeding mechanism comprises

The bottom supporting roll (11) is used for supporting the square tube to be processed;

the top driving rollers (12) are at least arranged two and are used for driving the square pipe to be processed to advance;

the side driving rollers (13) are at least provided in a pair and are used for driving the square pipe to be processed to advance;

the clamping part (14) is arranged behind the end to be cut of the square pipe to be machined and comprises a pair of clamping plates, a plurality of ball accommodating grooves are formed in opposite sides of the clamping plates, and balls are assembled in the ball accommodating grooves.

3. The full-automatic unloading material feeding unit of square pipe of claim 2, characterized in that: the free end of the ejector rod is provided with a detachable abutting head, and a third pressure detector is arranged inside the detachable abutting head; and the third pressure detector is connected with a driving motor of the top driving roller (12) and a driving motor of the side driving roller (13).

4. The full-automatic unloading material feeding unit of square pipe of claim 1, characterized in that: the lifting assembly (37) comprises a base;

the fourth driving cylinder (74) is arranged in the base and comprises a lifting rod which stretches up and down;

an inner support ring (71) with the top end connected with the bottom of the support plate (33);

the middle part of the connecting frame (75) is connected with the free end of the lifting rod, and the two ends of the connecting frame are connected with the inner wall of the inner support ring (71);

an outer support ring (73) having a bottom end connected to the base;

and the inner wall of the middle support ring (72) is connected with the outer wall of the inner support ring (71) or the outer wall adjacent to the middle support ring (72), and the outer wall of the middle support ring is connected with the inner wall of the outer support ring (73) or the inner wall adjacent to the middle support ring (72).

5. The full-automatic unloading material feeding unit of square pipe of claim 4, characterized in that: the middle support ring (72) comprises

The axial sliding chute (721) is axially arranged on the inner wall of the middle supporting ring (72);

the pressure sensor (722) is arranged at the inner top of the axial sliding chute (721);

the micro motor (723) is arranged at the upper end of the outer wall of the middle support ring (72), is connected with the pressure sensor (722), and comprises a telescopic limiting rod which radially penetrates through the axial sliding groove (721);

the sliding protrusion (724) is arranged at the lower end of the outer wall of the middle support ring (72) and is connected with the axial sliding groove (721) in a matching way;

and the limiting hole is arranged on the outer wall of the middle support ring (72) and is positioned below the sliding bulge (724) and is matched with the telescopic limiting rod for use.

6. The full-automatic unloading material feeding unit of square pipe of claim 4, characterized in that: an inner clamping ring (331) and an outer clamping ring (332) are arranged at the bottom of the supporting plate (33), and a clamping groove which is matched and connected with the inner supporting ring (71) is formed between the inner clamping ring (331) and the outer clamping ring (332); the outer wall of the inner support ring (71) is also provided with a positioning protrusion, and the outer clamping ring (332) is provided with a positioning opening for accommodating the positioning protrusion.

7. The full-automatic unloading material feeding unit of square pipe of claim 6, characterized in that: the outer wall of the inner clamping ring (331) is provided with a magnetic absorption layer, and the inner wall of the inner support ring (71) is provided with a magnetic absorption butt joint layer which is matched and connected with the magnetic absorption layer.

8. The full-automatic unloading material feeding unit of square pipe of claim 1, characterized in that: baffle (34) include interior side shield and outside baffle, interior side shield with between the outside baffle towards unloading roll table (32) exit end position is equipped with first pressure detector, interior side shield with between the outside baffle towards unloading roll table (32) avris position is equipped with second pressure detector, first pressure detector with second pressure detector with the second drives actuating cylinder (36) and connects.

9. The full-automatic unloading material feeding unit of square pipe of claim 1, characterized in that: and two sides of the inlet end of the circulating discharging chain plate (43) are respectively provided with an infrared transmitter (431) and an infrared receiver (432), and the infrared receiver (432) is connected with a driving motor of the circulating discharging chain plate (43).

10. The full-automatic unloading material feeding unit of square pipe of claim 9, characterized in that: two sides of the outlet end of the circulating type discharging chain plate (43) are respectively provided with a second infrared transmitter (433) and a second infrared receiver (434), and the second infrared receiver (434) is connected with a buzzer alarm (435).

Technical Field

The invention relates to the technical field of automatic square tube processing equipment, in particular to a full-automatic discharging and feeding device for square tubes.

Background

The square pipe needs to be cut into a section of square pipe section in the machining process, the square pipe section which is cut needs to be manually taken by an operator and placed on a carrying trolley, and the cutting time of the section of square pipe section is short, so that the operator needs to wait beside machining equipment all the time, and the condition that the next cutting operation of the whole square pipe is influenced because the section of square pipe section is not taken away in time is avoided. When an operator urgently needs to leave for a while, the processing equipment needs to be shut down, and the processing efficiency of the square pipe is greatly influenced. And one set of processing equipment is provided with at least one operating worker, so that the labor cost is high.

Disclosure of Invention

The invention provides a full-automatic discharging and feeding device for a square tube, aiming at the problems in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: full-automatic unloading material feeding unit manages in side, include

The feeding mechanism is used for driving the square pipe to be processed to advance along the linear direction;

the jacking and fixing mechanism comprises a telescopic ejector rod and a first driving cylinder connected with the telescopic ejector rod; the free end of the telescopic ejector rod is in abutting connection with the upper right end of the pipe orifice of the square pipe to be processed, and the telescopic direction of the ejector rod and the advancing direction of the square pipe to be processed form an included angle of 20-30 degrees;

the blanking mechanism comprises

The inlet end of the blanking slideway is butted with the end to be cut of the square tube to be processed;

the inlet end of the blanking roller way is butted with the outlet end of the blanking slideway;

one side of the supporting plate is butted with one side of the blanking roller bed;

the baffle plate is arranged around the outlet end of the blanking roller way and the other three sides of the support plate;

the push plate is arranged on the other side of the blanking roller way, and the back surface of the push plate is connected with a telescopic rod of the second driving cylinder;

the top of the lifting component is connected with the bottom of the supporting plate;

the push frame is arranged around the lifting assembly and comprises a main plate and two side plates, and the main plate is connected with a telescopic rod of the third driving cylinder;

and the inlet end of the circulating discharging chain plate is butted with the pushing frame.

Preferably, the feeding mechanism comprises

The bottom supporting roll is used for supporting the square tube to be processed;

the top driving rollers are at least two and are used for driving the square pipe to be processed to advance;

the side driving rollers are at least provided with one pair and are used for driving the square pipe to be processed to advance;

the clamping part is arranged behind the to-be-machined square pipe to be cut and comprises a pair of clamping plates, a plurality of ball accommodating grooves are formed in opposite sides of the clamping plates, and balls are assembled in the ball accommodating grooves.

Preferably, the free end of the ejector rod is provided with a detachable abutting head, and a third pressure detector is arranged inside the detachable abutting head; and the third pressure detector is connected with a driving motor of the top driving roller and a driving motor of the side driving roller.

Preferably, the lifting assembly comprises a base;

the fourth driving cylinder is arranged in the base and comprises a lifting rod which stretches up and down;

the top end of the inner support ring is connected with the bottom of the support plate;

the middle part of the connecting frame is connected with the free end of the lifting rod, and the two ends of the connecting frame are connected with the inner wall of the inner support ring;

the bottom end of the external support ring is connected with the base;

and the inner wall of the middle support ring is connected with the outer wall of the inner support ring or the outer wall of the adjacent middle support ring, and the outer wall of the middle support ring is connected with the inner wall of the outer support ring or the inner wall of the adjacent middle support ring.

Preferably, the middle support ring comprises

The axial sliding chute is axially arranged on the inner wall of the middle supporting ring;

the pressure sensor is arranged at the inner top of the axial sliding groove;

the micro motor is arranged at the upper end of the outer wall of the middle support ring, is connected with the pressure sensor and comprises a telescopic limiting rod which radially penetrates through the axial sliding groove;

the sliding bulge is arranged at the lower end of the outer wall of the middle support ring and is in fit connection with the axial sliding groove;

and the limiting hole is arranged on the outer wall of the middle supporting ring and is positioned below the sliding protrusion, and the limiting hole is matched with the telescopic limiting rod for use.

Preferably, the bottom of the support plate is provided with an inner clamping ring and an outer clamping ring, and a clamping groove which is connected with the inner support ring in a matched manner is formed between the inner clamping ring and the outer clamping ring; the outer wall of the inner support ring is also provided with a positioning bulge, and the outer clamping ring is provided with a positioning opening for accommodating the positioning bulge.

Preferably, the outer wall of the inner retainer ring is provided with a magnetic absorption layer, and the inner wall of the inner support ring is provided with a magnetic absorption butt joint layer which is matched and connected with the magnetic absorption layer.

Preferably, the baffle includes inboard baffle and outside baffle, inboard baffle with between the outside baffle towards unloading roll table exit end position is equipped with first pressure detector, inboard baffle with between the outside baffle towards unloading roll table avris position is equipped with second pressure detector, first pressure detector with second pressure detector with the second drives actuating cylinder and connects.

Preferably, an infrared transmitter and an infrared receiver are respectively arranged on two sides of the inlet end of the circulating type discharging chain plate, and the infrared receiver is connected with a driving motor of the circulating type discharging chain plate.

Preferably, two sides of the outlet end of the circulating type discharging chain plate are respectively provided with a second infrared transmitter and a second infrared receiver, and the second infrared receiver is connected with the buzzer alarm.

Advantageous effects

The utility model provides a full-automatic unloading material feeding unit of square pipe can be put into the square pipe section that cuts off automatically and pile one by one, and pile square pipe section and transfer to circulating ejection of compact link joint one by one, the operation workman only need in time with near the square pipe section pile of circulating ejection of compact link joint exit end transfer to the floor truck on can, need not wait constantly on the processing equipment next door, an operation workman can dock a plurality of unloading mechanisms, therefore, the manpower has been saved greatly, and the unloading handling efficiency of square pipe section has effectively been improved.

Drawings

FIG. 1 is a schematic structural view of a feeding mechanism and a jacking mechanism according to the present application;

FIG. 2 is a schematic view of the application structure of the top fixing mechanism and the square tube;

FIG. 3 is a schematic structural view of a blanking mechanism of the present application;

FIG. 4 is another schematic structural diagram of the blanking mechanism in FIG. 3;

FIG. 5 is a schematic view of the construction of the lift assembly of the present application;

FIG. 6 is a schematic structural view of a middle support ring of the present application;

FIG. 7 is a schematic view of a support plate according to the present application;

FIG. 8 is a schematic view of the inlet end of the circular discharging chain plate of the present application;

fig. 9 is a schematic structural diagram of the outlet end of the circulating discharging chain plate of the present application.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 4, the full-automatic discharging and feeding device for the square tube comprises a feeding mechanism, a top fixing mechanism 2 and a discharging mechanism.

The feeding mechanism is used for driving the square pipe to be machined to advance along the linear direction, and comprises a bottom supporting roller 11, a top driving roller 12, an edge side driving roller 13 and a clamping component 14, wherein the bottom supporting roller 11 is used for supporting the square pipe to be machined, the top driving roller 12 is used for driving the square pipe to be machined to advance, the edge side driving roller 13 is used for driving the square pipe to be machined to advance, and the clamping component 14 is arranged behind the end to. At least two top driving rollers 12 are provided, and at least one pair of side driving rollers 13 are provided to cooperate with the clamping member 14 for smooth advancement of the square tube. The clamping member 14 includes a pair of clamping plates having a plurality of ball receiving grooves formed at opposite sides thereof, the ball receiving grooves being fitted with balls. Can be fixed the square pipe one end of waiting to process through clamping unit 14, the square pipe cutting of being convenient for, the contact friction of reducible clamping unit 14 and square pipe through the ball. The front end of the square tube can be placed on the cutting table, namely, the square tube to be cut positioned at the front end of the clamping component 14 is positioned on the cutting table, so that the square tube is stably cut.

The jacking mechanism 2 comprises a telescopic ejector rod and a first driving cylinder connected with the telescopic ejector rod. The free end of telescopic ejector pin is contradicted with the mouth of pipe upper right end of waiting to process side's pipe and is connected, just the flexible direction of ejector pin is 25 degrees contained angles settings with the direction of advance of waiting to process side's pipe. The setting of the top fixing mechanism 2 can be used for adjusting the cutting position of the square pipe on the one hand, and on the other hand, the square pipe can be given a contact force, so that the square pipe is cut more stably. The telescopic ejector pin is the contained angle setting with the advancing direction who manages in a square, and the square pipe section after the cutting of being convenient for can be more conveniently by propelling movement to unloading slide 31. The ejector pin free end is equipped with dismantlement formula and supports the contact, the inside third pressure detector that is equipped with of dismantlement formula conflict, third pressure detector is connected with the driving motor of top drive roller 12, the driving motor of avris drive roller 13.

The concrete feeding process is as follows, the driving motor through top drive roller 12 and the driving motor drive top drive roller 12 and the avris drive roller 13 of avris drive roller 13 rotate, thereby drive square pipe and advance, after the contact of dismantlement formula conflict head of square pipe front end and telescopic ejector pin and give the third pressure detector certain pressure, the third pressure detector sends stop signal for the driving motor of top drive roller 12 and the driving motor of avris drive roller 13, at this moment, square pipe passes through cutting mechanism and accomplishes the cutting operation. After the cutting is accomplished, the telescopic ejector pin of first drive cylinder drive contracts the certain distance, simultaneously the driving motor of top drive roller 12 and the driving motor of avris drive roller 13 continue to drive top drive roller 12 and avris drive roller 13 and rotate, thereby it advances and pushes unloading slide 31 with the square pipe section of foremost to drive square pipe, first drive cylinder drive telescopic ejector pin resets immediately, the in-process resets, third pressure detector contacts the driving motor who makes top drive roller 12 and the driving motor of avris drive roller 13 stall with square pipe front end earlier, then continue to reset to initial position, at this moment, square pipe can be pushed back to waiting to cut the position, continue to cut the operation after that.

Unloading mechanism includes the entrance point and treats the side pipe of processing and treats unloading slide 31 of cutting end butt joint, the entrance point with the unloading roll table 32 of unloading slide 31 exit end butt joint, an avris with the backup pad 33 of one side butt joint of unloading roll table 32 centers on the baffle 34 that the other trilateral sides of unloading roll table 32 exit end, backup pad 33 set up locates the push pedal 35 that another avris of unloading roll table 32, the back and the telescopic link that the second drove actuating cylinder 36 are connected, the top with the lifting unit 37 that the bottom of backup pad 33 is connected centers on what lifting unit 37 set up pushes away frame 41, and the entrance point with push away the circulating ejection of compact link joint 43 of frame 41 butt joint, push away frame 41 and include a mainboard and both sides board, the mainboard is connected with the telescopic link that the third drove actuating cylinder.

Baffle 34 includes interior side shield and outside baffle, interior side shield with between the outside baffle towards unloading roll table 32 exit end position is equipped with first pressure detector, interior side shield with between the outside baffle towards unloading roll table 32 avris position is equipped with second pressure detector, first pressure detector with second pressure detector with the second drives actuating cylinder 36 and connects. The pressure detection values used by the first pressure detector, the second pressure detector and the third pressure detector are different and are all set according to actual use requirements.

The specific blanking process is as follows, the square pipe section is firstly slipped to the blanking roller way 32 through the blanking slideway 31, the blanking roller way 32 is driven by the driving motor to rotate ceaselessly, the blanking roller way 32 drives the square pipe section to move forward to the contact of the baffle 34 and give a certain pressure to the first pressure detector, the first pressure detector can give the second to drive the actuating cylinder 36 to send a signal after receiving a certain pressure, the second drives the actuating cylinder 36 to drive the push plate 35 to move forward so as to push the square pipe section to the supporting plate 33, when the square pipe section is pushed to the contact of the baffle 34 and give the second pressure detector a certain pressure, the second pressure detector can send a signal to the second to drive the actuating cylinder 36 so as to make the second drive the actuating cylinder 36. After resetting, the next square tube section just in time is by unloading slide 31 landing to unloading roll table 32, and this square tube section can continue to be placed side by push pedal 35 propelling movement to backup pad 33 and last square tube section, and then, the third square tube section can be in the same mode by propelling movement to place side by side with last square tube section. Then, the supporting plate 33 will be lowered by the lifting assembly 37 by the height of the square pipe section so that the supporting plate 33 can continue to stack the square pipe sections, and after the supporting plate 33 stacks the three square pipe sections, the supporting plate 33 will be lowered by the lifting assembly 37 to be parallel to the position of the circulating discharging chain plate 43. Finally, the pushing frame 41 is pushed to advance by the third driving cylinder 42 to push the square pipe segment stack to the circulating type discharging chain plate 43.

The width of unloading slide 31 is one third to one half of square tube section axial length, the width of unloading slide 31 diminishes to the exit end by the entrance point gradually, avoids square tube section transversely to slide into unloading roll table 32. The blanking roller bed 32 comprises a plurality of rotating rollers, and the roller surfaces of the rotating rollers are provided with friction increasing structures. The friction increasing structure can be a friction strip arranged axially or a friction bulge, and the contact force between the blanking roller bed 32 and the square pipe section can be increased through the friction increasing structure, so that the square pipe section can well advance rapidly on the blanking roller bed 32, and the slipping or slow advancing of the square pipe section is avoided.

As shown in fig. 5 to 7, the lifting assembly 37 includes a base, a fourth driving cylinder 74 disposed inside the base, and a lifting rod extending up and down, an inner support ring 71 having a top end connected to the bottom of the support plate 33, a connecting frame 75 having a middle portion connected to a free end of the lifting rod and two ends connected to an inner wall of the inner support ring 71, an outer support ring 73 having a bottom end connected to the base, and a middle support ring 72 having an inner wall connected to an outer wall of the inner support ring 71 or an outer wall adjacent to the middle support ring 72 and an outer wall connected to an inner wall of the outer support ring 73 or an inner wall adjacent to the middle support ring 72.

The middle support ring 72 comprises an axial sliding groove 721 axially arranged on the inner wall of the middle support ring 72, a pressure sensor 722 arranged on the inner top of the axial sliding groove 721, a micro-motor 723 arranged on the upper end of the outer wall of the middle support ring 72, connected with the pressure sensor 722 and comprising a telescopic limiting rod radially penetrating through the axial sliding groove 721, a sliding protrusion 724 arranged on the lower end of the outer wall of the middle support ring 72 and in fit connection with the axial sliding groove 721, and a limiting hole arranged on the outer wall of the middle support ring 72, positioned below the sliding protrusion 724 and in fit use with the telescopic limiting rod.

When the lifting assembly 37 descends for the first time, a signal is sent to the micro motor 723 at the connection position of the outer support ring 73 and the middle support ring 72, the micro motor 723 controls the corresponding telescopic limiting rod to be drawn out from the limiting hole, then the fourth driving cylinder 74 drives the connecting frame 75 to drive the inner support ring 71 to descend for a certain height, and in the descending process, the sliding protrusion 724 of the middle support ring 72 moves downwards in the axial sliding slot 721 of the outer support ring 73 to the bottom end. When the second descending is performed, a signal is sent to the micro motor 723 at the connection position of the middle support ring 72 and the middle support ring 72, the micro motor 723 controls the corresponding telescopic limiting rod to be drawn out from the limiting hole, then the fourth driving cylinder 74 drives the connecting frame 75 to drive the inner support ring 71 to descend by a certain height, and in the descending process, the sliding protrusion 724 of the middle support ring 72 moves downwards in the axial sliding slot 721 of the middle support ring 72 to the bottom end. When the third descending is performed, a signal is sent to the micro motor 723 at the joint of the inner support ring 71 and the middle support ring 72, the micro motor 723 controls the corresponding telescopic limiting rod to be drawn out from the limiting hole, then the fourth driving cylinder 74 drives the connecting frame 75 to drive the inner support ring 71 to descend by a certain height, in the descending process, the sliding protrusion 724 of the inner support ring 71 moves downwards in the axial sliding groove 721 of the middle support ring 72 to the bottom end, at this time, the descending is completed, and the support plate 33 is parallel to the position of the circulating type discharging chain plate 43.

The lifting assembly 37 is reset and lifted, and the fourth driving cylinder 74 drives the connecting frame 75 to drive the inner supporting ring 71 to lift to the initial height, at this time, the sliding protrusion 724 of the inner supporting ring 71 slides to the top of the axial sliding slot 721 of the middle supporting ring 72 and contacts with the pressure sensor 722, the pressure sensor 722 sends a signal to the micro motor 723, and the micro motor 723 drives the telescopic limiting rod to be inserted into the limiting hole to fix the inner supporting ring 71 and the middle supporting ring 72; the sliding protrusion 724 of the middle support ring 72 slides to the top of the axial sliding slot 721 of the other middle support ring 72 and contacts with the pressure sensor 722, the pressure sensor 722 sends a signal to the micro motor 723, and the micro motor 723 drives the telescopic limiting rod to be inserted into the limiting hole to fix the two middle support rings 72; the sliding protrusion 724 of the middle support ring 72 slides to the top of the axial sliding slot 721 of the outer support ring 73 and contacts with the pressure sensor 722, the pressure sensor 722 sends a signal to the micro-motor 723, and the micro-motor 723 drives the telescopic limiting rod to be inserted into the limiting hole to fix the middle support ring 72 and the outer support ring 73.

The arrangement of the inner support ring 71, the middle support ring 72 and the outer support ring 73 enables the support plate 33 to be stably supported on the one hand, and enables the support plate 33 to be more precisely lowered at a time on the other hand, and in addition, can also play a role of protecting the fourth driving cylinder 74.

An inner clamping ring 331 and an outer clamping ring 332 are arranged at the bottom of the supporting plate 33, a clamping groove matched and connected with the inner supporting ring 71 is formed between the inner clamping ring 331 and the outer clamping ring 332, a positioning protrusion is further arranged on the outer wall of the inner supporting ring 71, and a positioning opening for accommodating the positioning protrusion is formed in the outer clamping ring 332. When the supporting plate 33 is connected to the inner supporting ring 71, the positioning openings are aligned with the positioning protrusions, and then the locking grooves are locked to the inner supporting ring 71. Through the setting of location mouth and location arch, the simple accurate positioning of the backup pad 33 of being convenient for on the one hand, on the other hand prevents that backup pad 33 from taking place the position excursion because of rotating in the use. The outer wall of the inner clamping ring 331 is provided with a magnetic absorption layer, and the inner wall of the inner support ring 71 is provided with a magnetic absorption butt joint layer which is matched and connected with the magnetic absorption layer. The magnetic attraction layer and the magnetic attraction butt joint layer are arranged, so that the support plate 33 is connected with the internal support ring 71 more stably, and the support plate 33 only needs to be pulled out slightly forcibly during disassembly.

As shown in fig. 8 and 9, an infrared transmitter 431 and an infrared receiver 432 are respectively arranged on both sides of the inlet end of the circulating discharging chain plate 43, and the infrared receiver 432 is connected with a driving motor of the circulating discharging chain plate 43. When pushing away frame 41 and piling propelling movement to circulating ejection of compact link joint 43 entrance point with square pipe section, square pipe section is piled and can is sheltered from the infrared ray, at this moment, infrared receiver 432 can send the driving motor of signal for circulating ejection of compact link joint 43, driving motor can drive circulating ejection of compact link joint 43 and advance the position that the certain distance was piled in order to vacate the place of placing next place pipe section, after the position of vacating was put the completion by next place pipe section stack, circulating ejection of compact link joint 43 can continue to advance the certain distance and put the position of next place pipe section stack in order to vacate, so, constantly circulate. When the foremost square pipe section pile does not reach the outlet end of the circulating type discharging chain plate 43, an operator needs to move the square pipe section pile to the carrying trolley, and the square pipe section pile is transferred to the warehouse through the carrying trolley. Because circulating ejection of compact link joint 43 can place many piles of square tube sections, and square tube section forms and needs certain time, consequently, the operation workman can carry out butt joint operation to a plurality of unloading mechanisms simultaneously, for example, when the square tube section of 1 unloading mechanism piled more, the operation workman can carry the square tube section of 1 unloading mechanism earlier and pile the transport work of square tube section, then, go the more unloading mechanism of next square tube section pile and carry out the transport work of square tube section, so cyclic operation, compare a processing equipment of prior art and dispose an operation workman's mode, the manpower has been saved greatly, and the unloading handling efficiency of square tube section has effectively been improved.

Two sides of the outlet end of the circulating type discharging chain plate 43 are respectively provided with a second infrared transmitter 433 and a second infrared receiver 434, and the second infrared receiver 434 is connected with a buzzer alarm 435. When the foremost square pipe section of circulating ejection of compact link joint 43 piles and does not reach circulating ejection of compact link joint 43 exit end, square pipe section piles can be sheltered from the infrared ray, and at this moment, infrared receiver two 434 can send the signal for buzzer siren 435, and buzzer siren 435 can send out the warning sound in order to remind the operation workman to carry the square pipe section that corresponds unloading mechanism preferentially and pile.

The circulating type discharging chain plate 43 comprises a chain plate body, wherein finger holding holes are formed in the chain plate body, when an operator carries a square pipe stack, the square pipe stack can be finely adjusted to the finger holding holes, then the square pipe stack is moved forward through the finger holding holes, and the finger holding holes are arranged to be beneficial to moving the square pipe stack.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.