阅读说明：本技术 一种焊接弯管焊接坡口自动加工成型装置 (Automatic processing and forming device for welding groove of welding elbow ) 是由 唐红艳 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种焊接弯管焊接坡口自动加工成型装置,涉及管件剪切技术领域,包括外壳,还包括有切割装置,所述外壳的表面固定连接有工作架,所述工作架内设置有工作台,所述管道放置在所述工作台上,所述工作架内设置有用于固定所述管道的四个夹板,所述外壳内设置有分别控制两个所述夹板位移从而对四个尺寸不同的所述管道均进行固定的两组固定部件,还包括有使得四个所述管道受固定时力度保持均匀,避免力度偏差影响坡口成型效果的调整部件,本发明通过上述结构之间的相互配合,具备了对多个尺寸不同的管件进行同时固定,固定效果好,受力均匀的效果,解决了传统的方式需要将每组管件单独固定,效率低下的问题。(The invention discloses an automatic processing and forming device for welding grooves of welded elbows, which relates to the technical field of pipe shearing, comprises a shell and a cutting device, wherein the surface of the shell is fixedly connected with a working frame, a working table is arranged in the working frame, a pipeline is placed on the working table, four clamping plates for fixing the pipeline are arranged in the working frame, two groups of fixing components for respectively controlling the displacement of the two clamping plates so as to fix the four pipelines with different sizes are arranged in the shell, and the automatic processing and forming device also comprises an adjusting component for keeping the force of the four pipelines uniform when the four pipelines are fixed and avoiding the influence of the force deviation on the groove forming effect. The problem of traditional mode need be fixed alone with every group pipe fitting, inefficiency is solved.)

1. The utility model provides a welding return bend welding groove automatic processing forming device, includes shell (1), its characterized in that: also comprises a cutting device (3), the surface of the shell (1) is fixedly connected with a working frame (4), a workbench (5) is arranged in the working frame (4), the pipeline (2) is placed on the workbench (5), four clamping plates (6) for fixing the pipeline (2) are arranged in the working frame (4), two groups of fixing parts which respectively control the displacement of the two clamping plates (6) so as to fix the four pipelines (2) with different sizes are arranged in the shell (1), the device also comprises an adjusting part which ensures that the four pipelines (2) have uniform force when being fixed and avoids the force deviation from influencing the groove forming effect, and a driving mechanism which controls the displacement of the fixing parts, a reset component which automatically resets the adjusting component after the beveling of the four pipelines (2) is finished is arranged in the working frame (4); the fixed part comprises a gear (7), the inner wall of the shell (1) is fixedly connected with a fixed plate (8), the surface of the fixed plate (8) is connected with a rack row I (9) in a sliding manner, teeth of the gear (7) are meshed with teeth of the rack row I (9), the surface of the gear (7) is hinged with a push plate (10), the top end of the push plate (10) is fixedly connected with a displacement plate I (11), the side surface of the push plate (10) is fixedly connected with a connecting rod I (12), a lever arm of the connecting rod I (12) is sleeved with a rack row II (13), teeth of the rack row II (13) are meshed with teeth of the gear (7), the top surface of the displacement plate I (11) is fixedly connected with a displacement rod (14), a lever arm of the displacement rod (14) is sleeved with a displacement plate II (15), and the side surface of the displacement plate II (15) is fixedly connected with a connecting rod II (16), the end part of the second connecting rod (16) is fixedly connected with the top end of the first rack row (9), the clamping plate (6) is fixedly connected with the bottom ends of the first rack row (9) and the second rack row (13) respectively, a spring (17) is sleeved on a lever arm of the displacement lever (14), and two ends of the spring (17) are fixedly connected with the opposite sides of the first displacement plate (11) and the second displacement plate (15) respectively; the driving mechanism comprises a driving rod (18), the bottom end of the driving rod (18) is rotatably connected with the top end of the fixed plate (8), a lever arm of the driving rod (18) is fixedly connected with a driving gear (19), the top ends of the two displacement rods (14) are fixedly connected with driving connecting rods (20), the lever arms of the two driving connecting rods (20) are respectively sleeved with a driving push rod (21), the inner walls of the two driving push rods (21) are respectively and fixedly connected with a driving spring (22), the end parts of the two driving springs (22) are respectively and fixedly connected with the end parts of the two driving connecting rods (20), the end parts of the two driving push rods (21) are respectively and fixedly connected with a thread sleeve block (23), the inner walls of the two thread sleeve blocks (23) are respectively and fixedly connected with a threaded rod (24), and the lever arms of the two threaded rods (24) are respectively and fixedly connected with a connecting gear (25), the teeth of the two connecting gears (25) are meshed with the teeth of the driving gear (19).

2. The automatic processing and forming device for the welding groove of the welded elbow according to claim 1, characterized in that: the adjusting part includes two adjusting plate (26), two the surface of adjusting plate (26) has all been seted up and has been supplied two respectively threaded rod (24) pass and rotate the mouth that changes of being connected with it, two the top surface of displacement board (11) all articulates there is adjusting lever one (27), two the bottom surface of displacement board two (15) all articulates there is adjusting lever two (28), two the tip of adjusting lever one (27) respectively with two the tip of adjusting lever two (28) is articulated, two adjusting lever one (27) and two the pin joint of adjusting lever two (28) all articulates there is adjustment push rod (29).

3. The automatic processing and forming device for the welding groove of the welded elbow according to claim 2, characterized in that: the surfaces of the two adjusting plates (26) are respectively provided with sliding openings for the two adjusting push rods (29) to pass through and be in sliding connection with.

4. The automatic processing and forming device for the welding groove of the welded elbow according to claim 1, 2 or 3, characterized in that: the reset component comprises a reset block (30), the inner wall of the working frame (4) is provided with a reset groove (31), a reset spring (32) is fixedly connected with the groove wall of the reset groove (31), the surface of the reset block (30) is in sliding connection with the groove wall of the reset groove (31), the surface of the reset block (30) is connected with the bottom surface of the workbench (5) in a sliding way, the bottom surface of the workbench (5) is fixedly connected with four supporting springs (33), the bottom ends of the four supporting springs (33) are fixedly connected with the inner wall of the working frame (4), the inner wall of the working frame (4) is fixedly connected with three limiting slide bars (34), the surface of the workbench (5) is provided with three limiting openings which are respectively penetrated by the three limiting slide bars (34) and are connected with the three limiting slide bars in a sliding way, an inlet (35) for the cutting device (3) to go in and out is formed in the surface of the working frame (4).

5. The automatic processing and forming device for the welding groove of the welded elbow according to claim 4, characterized in that: the inner wall of the shell (1) is fixedly connected with a motor (36), and an output shaft of the motor (36) is fixedly connected with the top end of the driving rod (18).

6. The automatic processing and forming device for the welding groove of the welded elbow according to claim 1, characterized in that: the two groups of fixing parts are arranged in a bilateral symmetry mode by taking the central line of the fixing plate (8) as an axis.

7. The automatic processing and forming device for the welding groove of the welded elbow according to claim 5, characterized in that: and a feeding port (37) is formed in the surface of the working frame (4).

Technical Field

The invention relates to the technical field of pipe shearing, in particular to an automatic processing and forming device for a welding groove of a welding elbow.

Background

The groove is a groove with a certain geometric shape which is formed by processing and assembling the part to be welded of a welding piece, can be formed by gas cutting or shearing in order to ensure the welding degree of the welding piece, and when the groove is processed on a metal cast pipe, a pipe fitting needs to be fixed firstly, and then the tail end of the pipe fitting needs to be sheared.

The traditional mode is carrying out the groove to the multiunit metal cast tube spare simultaneously and is adding man-hour, need fix alone every group pipe fitting, and this kind of mode availability factor is low, and the time-wasting can't satisfy growing actual processing demand, uses inconveniently.

Disclosure of Invention

The invention aims to provide an automatic processing and forming device for a welding groove of a welding elbow, which has the effects of simultaneously fixing a plurality of pipes with different sizes, having good fixing effect and uniform stress and solves the problems that each group of pipes needs to be independently fixed in the traditional mode and the efficiency is low.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a welding return bend welding groove automatic processing forming device, includes the shell, still including cutting device, the fixed surface of shell is connected with the workstation, be provided with the workstation in the workstation, the pipeline is placed on the workstation, be provided with in the workstation and be used for fixing four splint of pipeline, thereby be provided with respectively control two in the shell splint displacement is to four size differences the pipeline all carries out two sets of fixed parts of fixing, still including making four the pipeline receives the dynamics when fixed to keep even, avoids the dynamics deviation to influence the adjustment part of groove shaping effect, still including control the actuating mechanism of fixed part displacement, be provided with in the workstation four after pipeline groove processing is accomplished, it is automatic right fixed part resets.

Optionally, the fixing part includes a gear, a fixing plate is fixedly connected to the inner wall of the housing, a first rack row is slidably connected to the surface of the fixing plate, teeth of the gear are engaged with teeth of the first rack row, a push plate is hinged to the surface of the gear, a first displacement plate is fixedly connected to the top end of the push plate, a first connecting rod is fixedly connected to the side surface of the push plate, a second rack row is sleeved on a lever arm of the first connecting rod, teeth of the second rack row are engaged with teeth of the gear, a displacement rod is fixedly connected to the top surface of the first displacement plate, a second displacement plate is sleeved on the lever arm of the displacement rod, a second connecting rod is fixedly connected to the side surface of the second displacement plate, the end portion of the second connecting rod is fixedly connected to the top end of the first rack row, and the clamping plate is fixedly connected to the bottom ends of the first rack row and the second rack row respectively, and a spring is sleeved on a lever arm of the displacement lever, and two ends of the spring are respectively fixedly connected with the opposite sides of the first displacement plate and the second displacement plate.

Optionally, actuating mechanism includes the actuating lever, the bottom of actuating lever with the top of fixed plate is rotated and is connected, the lever arm fixedly connected with drive gear of actuating lever, two the equal fixedly connected with drive connecting rod in top of displacement pole, two drive connecting rod's lever arm has all cup jointed drive push rod, two drive push rod's the equal fixedly connected with drive spring of inner wall, two drive spring's tip respectively with two drive connecting rod's tip fixed connection, two drive push rod's the equal fixedly connected with thread bush piece in tip, two the equal threaded connection of inner wall of thread bush piece has the threaded rod, two the equal fixedly connected with connecting gear of lever arm, two the tooth of connecting gear all with the tooth of drive gear meshes mutually.

Optionally, the adjusting part includes two adjusting plates, two rotating openings are respectively provided on the surfaces of the two adjusting plates, the two threaded rods pass through and are rotatably connected with the two adjusting plates, the top surfaces of the two first displacement plates are hinged with a first adjusting rod, the bottom surfaces of the two displacement plates are hinged with a second adjusting rod, the end portions of the two adjusting rods are respectively hinged with the end portions of the two adjusting rods, the two adjusting rods are hinged with a second adjusting rod, and the surface of the two adjusting plates is provided with a sliding opening respectively for the two adjusting rods to pass through and be slidably connected with the adjusting rods.

Optionally, the reset part includes the reset block, the reset groove has been seted up to the inner wall of workstation, the cell wall fixedly connected with reset spring in reset groove, the surface of reset block with the cell wall sliding connection in reset groove, the surface of reset block with the bottom surface sliding connection of workstation, four supporting spring of bottom surface fixedly connected with of workstation, four supporting spring's bottom all with the inner wall fixed connection of workstation, the three spacing slide bar of inner wall fixed connection of workstation, the surface of workstation is seted up and is supplied threely respectively spacing slide bar passes and three spacing mouth of sliding connection with it, the confession has been seted up on the surface of workstation the entry that cutting device came in and go out.

Optionally, the inner wall of the housing is fixedly connected with a motor, and an output shaft of the motor is fixedly connected with the top end of the driving rod.

Optionally, the two groups of fixing parts are arranged in bilateral symmetry with the central line of the fixing plate as an axis.

Optionally, a feeding port is formed in the surface of the working frame.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the driving rod is driven to rotate by starting the motor, so that the displacement rod is driven to displace downwards, the clamping plates below the second rack row are firstly contacted with a larger pipeline to fix the larger pipeline, and the clamping plates below the first rack row are pressed and fixed on the pipeline along with the continuous downward movement of the device, so that the effect of simultaneously fixing two pipelines with different sizes is achieved.

When the displacement plate downwards displaces the compression spring in two directions, the first adjusting rod and the second adjusting rod are driven to displace, so that the teeth of the connecting gear and the teeth of the driving gear which are positioned on the left side are separated, the continuous operation of the device positioned on the right side of the fixing plate cannot be influenced when the fixing of the two pipelines on the side is finished until the device positioned on the right side of the fixing plate is fixed, and the effects that when the four pipelines with different sizes are fixed, the pressure on the four pipelines is kept uniform, and the groove cutting effect after the fixing is influenced by the difference of external force are achieved.

When the cutting device finishes cutting and returns to the right side, the reset block is pushed to displace towards the right side, so that a gap is formed between the first rack row and the second rack row, the first displacement plate and the second displacement plate are opened again under the action of the elastic force of the spring, and the connecting gear is meshed with the driving gear again, so that the effect of resetting the device is achieved, and the device can be used next time.

Drawings

FIG. 1 is an isometric view of a structure of the present invention;

FIG. 2 is a front sectional view of the present invention;

FIG. 3 is a front sectional view of the present invention showing the motion state of the structure;

FIG. 4 is a front cross-sectional view of the structure of FIG. 3 according to the present invention;

fig. 5 is a front cross-sectional view of the structure of fig. 3 at B in accordance with the present invention.

In the figure: 1. a housing; 2. a pipeline; 3. a cutting device; 4. a working frame; 5. a work table; 6. a splint; 7. a gear; 8. a fixing plate; 9. arranging a first rack; 10. pushing the plate; 11. a first displacement plate; 12. a first connecting rod; 13. a second rack row; 14. a displacement rod; 15. a second displacement plate; 16. a second connecting rod; 17. a spring; 18. a drive rod; 19. a drive gear; 20. a drive link; 21. driving the push rod; 22. a drive spring; 23. a threaded bushing block; 24. a threaded rod; 25. a connecting gear; 26. an adjustment plate; 27. a first adjusting rod; 28. a second adjusting rod; 29. adjusting the push rod; 30. a reset block; 31. a reset groove; 32. a return spring; 33. a support spring; 34. a slide bar; 35. an inlet; 36. a motor; 37. and a feeding port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: an automatic processing and forming device for welding grooves of welding elbows comprises a shell 1, four pipelines 2 with different sizes and a cutting device 3, wherein the surface of the shell 1 is fixedly connected with a working frame 4, a working table 5 is arranged in the working frame 4, the pipelines 2 are placed on the working table 5, four clamping plates 6 for fixing the pipelines 2 are arranged in the working frame 4, two groups of fixing parts for respectively controlling the displacement of the two clamping plates 6 so as to fix the four pipelines 2 with different sizes are arranged in the shell 1, the two groups of fixing parts are symmetrically arranged in a left-right mode by taking the central line of a fixing plate 8 as an axis, the automatic processing and forming device also comprises an adjusting part for keeping the force of the four pipelines 2 uniform when being fixed and avoiding the force deviation from influencing the groove forming effect, the automatic processing and forming device also comprises a driving mechanism for controlling the displacement of the fixing parts, and after the grooves of the four pipelines 2 are processed, automatic reset unit who resets is carried out fixed part, put into workstation 5 with pipeline 2 on, drive fixed part through actuating mechanism and carry out the displacement, thereby make two pipeline 2 homoenergetic different to the size fix simultaneously, make the adjustment part motion when fixed the accomplishing through fixed part, can reach when fixing four pipeline 2 that the size is inconsistent, make the pressure that these four pipeline 2 received keep even, can not be because of the groove cutting after the fixed external force difference influences, carry out the displacement to the left side through cutting device 3, can carry out the groove cutting to four pipeline 2 that have fixed, when cutting device 3 accomplishes, drive reset unit motion, can make the adjustment part reset again, so that use next time.

Further, the fixed part comprises a gear 7, a fixed plate 8 is fixedly connected to the inner wall of the housing 1, a first rack row 9 is slidably connected to the surface of the fixed plate 8, teeth of the gear 7 are meshed with teeth of the first rack row 9, a push plate 10 is hinged to the surface of the gear 7, a first displacement plate 11 is fixedly connected to the top end of the push plate 10, a first connecting rod 12 is fixedly connected to the side surface of the push plate 10, a second rack row 13 is sleeved on a lever arm of the first connecting rod 12, teeth of the second rack row 13 are meshed with teeth of the gear 7, a displacement rod 14 is fixedly connected to the top surface of the first displacement plate 11, a second displacement plate 15 is sleeved on a lever arm of the displacement rod 14, a second connecting rod 16 is fixedly connected to the side surface of the second displacement plate 15, the end of the second connecting rod 16 is fixedly connected to the top end of the first rack row 9, the clamping plate 6 is fixedly connected to the bottom ends of the first rack row 9 and the second rack row 13 respectively, and a spring 17 is sleeved on the lever arm of the displacement rod 14, two ends of a spring 17 are fixedly connected with opposite sides of a first displacement plate 11 and a second displacement plate 15 respectively, and are displaced downwards through a displacement rod 14, so that the first displacement plate 11 is driven to displace downwards, a push plate 10 is driven to displace downwards, and a gear 7 is driven to displace downwards, at the moment, a first rack row 9 and a second rack row 13 do not have external force to contact with the first rack row and the second rack row, namely, the first rack row and the second rack row are displaced downwards along with the gear 7, an upper displacement plate 15 and a connecting rod 16 synchronously displace downwards, at the moment, the spring 17 does not deform, along with the downward displacement of the first rack row 9 and the second rack row 13, at the moment, a clamping plate 6 below the second rack row 13 contacts with a larger pipeline 2 to fix the pipeline, at the moment, along with the continuous downward movement of the device, the second rack row 13 and the pipeline 2 keep relatively static, and at the same time, the second rack row 13 slides along a lever arm of the connecting rod 12 to drive the gear 7 to rotate, and then drive rack row one 9 and carry out the displacement downwards to make the splint 6 of rack row one 9 below support to press fixedly to the pipeline, drive two 15 displacement plates through two 16 connecting rods this moment and slide downwards along the lever arm of displacement pole 14, thereby compression spring 17, so can fix two pipeline 2 homoenergetic of size difference simultaneously, lie in 8 right side structure motion principle forms of fixed plate and be unanimous with the above-mentioned.

Further, the driving mechanism comprises a driving rod 18, the bottom end of the driving rod 18 is rotatably connected with the top end of the fixed plate 8, a lever arm of the driving rod 18 is fixedly connected with a driving gear 19, the top ends of the two displacement rods 14 are fixedly connected with driving connecting rods 20, the lever arms of the two driving connecting rods 20 are respectively sleeved with driving push rods 21, the inner walls of the two driving push rods 21 are respectively fixedly connected with driving springs 22, the end parts of the two driving springs 22 are respectively fixedly connected with the end parts of the two driving connecting rods 20, the end parts of the two driving push rods 21 are respectively fixedly connected with a threaded sleeve block 23, the inner walls of the two threaded sleeve blocks 23 are respectively in threaded connection with a threaded rod 24, the lever arms of the two threaded rods 24 are respectively fixedly connected with connecting gears 25, the teeth of the two connecting gears 25 are respectively engaged with the teeth of the driving gear 19, and the driving gear 19 is driven to rotate by rotating the driving rod 18, and then drive connecting gear 25 and rotate to drive threaded rod 24 and rotate, and then under the limiting displacement of drive push rod 21 to screw sleeve piece 23, make screw sleeve piece 23 carry out the displacement downwards, drive push rod 21 displacement downwards this moment, thereby make drive connecting rod 20 carry out the displacement downwards, thereby drive displacement pole 14 and carry out the displacement downwards.

Further, the adjusting component includes two adjusting plates 26, the surfaces of the two adjusting plates 26 are respectively provided with a rotating opening for the two threaded rods 24 to pass through and be rotatably connected with, the top surfaces of the two first displacement plates 11 are respectively hinged with an adjusting rod one 27, the bottom surfaces of the two second displacement plates 15 are respectively hinged with an adjusting rod two 28, the end parts of the two adjusting rods one 27 are respectively hinged with the end parts of the two adjusting rods two 28, the hinged joints of the two adjusting rods one 27 and the two adjusting rods two 28 are respectively hinged with an adjusting push rod 29, the surfaces of the two adjusting plates 26 are respectively provided with a sliding opening for the two adjusting push rods 29 to pass through and be slidably connected with, when the second displacement plates 15 displace downwards to compress the spring 17, the adjusting rods one 27 and the adjusting rods two 28 are driven to displace, that is to push the adjusting push rod 29 to displace towards the direction far away from the driving gear 19, so as to drive the adjusting plates 26 to displace towards the direction far away from the driving gear 19, thereby threaded rod 24 is to keeping away from the direction of actuating lever 18 and is shifted, thereby make connecting gear 25 break away from with drive gear 19's tooth mutually, can make two pipeline 2 of this side when fixed the end this moment, can not influence the continuation function that is located 8 right side devices of fixed plate, accomplish until being located 8 right side devices of fixed plate is fixed, two connecting gear 25 all break away from with drive gear 19 mutually promptly, can reach when fixing four pipeline 2 that the size is inconsistent, the pressure that makes these four pipeline 2 receive keeps even, can not be because of the groove cutting after the fixed external force difference influences.

Further, the reset component comprises a reset block 30, a reset groove 31 is formed in the inner wall of the working frame 4, a reset spring 32 is fixedly connected to the groove wall of the reset groove 31, the surface of the reset block 30 is slidably connected to the bottom surface of the working table 5, four support springs 33 are fixedly connected to the bottom surface of the working table 5, the bottom ends of the four support springs 33 are fixedly connected to the inner wall of the working frame 4, three limit slide bars 34 are fixedly connected to the inner wall of the working frame 4, three limit openings for the three limit slide bars 34 to pass through and to be slidably connected with are formed in the surface of the working table 5, an inlet 35 for the cutting device 3 to come in and go out is formed in the surface of the working frame 4, when the cutting device 3 finishes returning to the right side, the reset block 30 is pushed to displace to the right side along with the displacement of the cutting device 3, the reset block 30 pushes the reset spring 32 to slide to the right side along the groove wall of the reset groove 31, the workbench 5 loses the clamping fixation of the reset block 30 to the workbench, at the moment, under the action of the gravity of the pipeline 2, a lever arm of a sliding rod 34 along which the workbench 5 slides downwards along a compression supporting spring 33, at the moment, a gap exists between a first rack row 9 and a second rack row 13, at the moment, under the action of the elastic force of a spring 17, a first displacement plate 11 and a second displacement plate 15 are opened again, the adjusting push rod 29 can be displaced towards the direction close to the driving rod 18, namely, the connecting gear 25 is meshed with the driving gear 19 again, and therefore the device can be reset so as to be used next time.

In order to drive the driving rod 18 better, further, the inner wall of the housing 1 is fixedly connected with a motor 36, an output shaft of the motor 36 is fixedly connected with the top end of the driving rod 18, and the driving rod 18 is driven to rotate by starting the motor 36.

In order to better put the pipeline 2, further, the surface of the working frame 4 is provided with a material inlet 37, and a user puts the pipeline 2 on the working table 5 through the material inlet 37.

The working principle is as follows: when this welding return bend welding groove automatic processing forming device used, on user of service was through putting into workstation 5 with pipeline 2 from pan feeding mouth 37, starter motor 36 afterwards drove actuating lever 18 and rotates, used the structure that is located the left of fixed plate 8 at this moment as the example.

Thereby drive gear 19 and rotate, and then drive connecting gear 25 and rotate, thereby drive threaded rod 24 and rotate, and then under the limiting action of drive push rod 21 to screw sleeve 23, make screw sleeve 23 displace downwards, drive push rod 21 displacement downwards this moment, thereby make drive connecting rod 20 displace downwards, thereby drive displacement pole 14 displace downwards, thereby drive displacement board 11 to displace downwards, thereby drive push pedal 10 to displace downwards, and then drive gear 7 to displace downwards, rack row one 9 and rack row two 13 do not have external force and contact with it at this moment, promptly follow gear 7 and displace downwards, upper portion displacement board two 15 and connecting rod two 16 synchronous displacement downwards, spring 17 does not take place the deformation at this moment, along with rack row one 9 and rack row two 13's downward displacement, splint 6 below rack row two 13 at this moment contacts with great pipeline 2 earlier (place to cup joint and connect as shown in fig. 2 and connect the connection splint 6 of placing under the rack row two 13 Pipeline 2 of two 13 lower parts of rack row of first 12 is greater than the pipeline 2 diameter of the rack row of 9 lower parts that sets up in two 16 below connecting rods), fix it, move down along with the continuation of device this moment, make rack row two 13 and pipeline 2 keep static relatively, rack row two 13 slides along the lever arm of connecting rod one 12 simultaneously, thereby drive gear 7 and rotate, and then drive rack row one 9 and carry out the displacement downwards, thereby make splint 6 of rack row one 9 below support the pressure fixedly to the pipeline, drive displacement board two 15 through connecting rod two 16 and slide downwards along the lever arm of displacement pole 14 this moment, thereby compression spring 17, so can fix two pipeline 2 homoenergetic of size difference simultaneously, it is unanimous with the aforesaid to be located 8 right side structure motion principle forms of fixed plate.

When the second displacement plate 15 displaces downward to compress the spring 17, the first adjustment rod 27 and the second adjustment rod 28 are driven to displace, namely, the adjusting push rod 29 is pushed to displace in the direction away from the driving gear 19, thereby driving the adjusting plate 26 to displace in the direction away from the driving gear 19, so that the threaded rod 24 is displaced away from the driving rod 18, so that the connecting gear 25 is disengaged from the teeth of the driving gear 19, at which point the fixing of the two pipes 2 on the same side is completed, the continuous operation of the device positioned at the right side of the fixed plate 8 can not be influenced until the fixation of the device positioned at the right side of the fixed plate 8 is finished, namely, the two connecting gears 25 are separated from the driving gear 19, so that when the four pipelines 2 with different sizes are fixed, the pressure on the four pipelines 2 is kept uniform, and groove cutting after the influence of fixed external force difference is avoided.

The four fixed pipelines 2 can be subjected to groove cutting by displacing the cutting device 3 to the left side.

When the cutting device 3 finishes returning to the right side after cutting, at the moment, along with the displacement of the cutting device 3, the reset block 30 is pushed to displace to the right side, at the moment, the reset block 30 pushes the reset spring 32 to slide to the right side along the groove wall of the reset groove 31, so that the workbench 5 loses the clamping fixation of the reset block 30 to the reset block, at the moment, under the action of the gravity of the pipeline 2, the lever arm of the sliding rod 34 along which the workbench 5 is made to compress the supporting spring 33 to slide downwards, at the moment, a gap exists between the first rack row 9 and the second rack row 13, at the moment, under the action of the elastic force of the spring 17, the first displacement plate 11 and the second displacement plate 15 are opened again, the adjusting push rod 29 can be made to displace towards the direction close to the driving rod 18, namely, the connecting gear 25 is made to be meshed with the driving gear 19 again, and thus the device can be reset for next use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.