CN112171603A

CN112171603A - Thin-wall three-way pipe clamping equipment

Info

Publication number: CN112171603A
Application number: CN202011260785.8A
Authority: CN
Inventors: 朱昌林; 丁友波
Original assignee: Anhui Degao Metal Product Co ltd
Current assignee: Anhui Degao Metal Product Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-01-05

Abstract

The invention relates to thin-wall three-way pipe clamping equipment, in particular to the technical field of fixing equipment, which comprises a workbench, two groups of moving assemblies and two groups of rotating and fixing assemblies, wherein the moving assemblies are fixedly arranged on the workbench, the two groups of rotating and fixing assemblies are symmetrically arranged on the moving assemblies, the moving assemblies drive the rotating and fixing assemblies to move on the workbench so as to fix three-way pipes with different sizes, and the rotating and fixing assemblies are arranged to fix the three-way pipes and simultaneously adjust the angles of the three-way pipes so as to better process the three-way pipes.

Description

Thin-wall three-way pipe clamping equipment

Technical Field

The invention relates to the technical field of fixing equipment, in particular to thin-wall three-way pipe clamping equipment.

Background

The three-way pipe is widely used in pipe networks for conveying liquid and gas. Because of the different conveying media, the material of three-way pipe divide into: cast iron, cast steel, cast copper, cast aluminum, plastic, glass, and the like. The metal material tee bend has the person in charge and is responsible for and be responsible for the branch pipe that one side perpendicular to was responsible for and be responsible for the intercommunication setting, is responsible for the export direction and sets up the valve with the branch pipe export direction intersection corner, sets up circular valve block on the valve, and the valve block is the structure sealed each other with the lumen inner wall at lumen closed condition. With the development of manufacturing industry, manufacturers have begun to consider how to ensure product consistency while improving the automation level of the production line and increasing the yield. Factors influencing the consistency of the product mainly depend on the production equipment, namely, the positioning precision of the production equipment determines the precision of the product. In current production facility, the tight mode of clamp mainly adopts the swing arm cylinder to pipe fitting type product clamping positioning system, has the less problem of clamp force, can produce certain reaction force to pipe fitting type product, and these factors can lead to the cylinder can not press from both sides pipe fitting type product tight to the repeatability positioning accuracy of pipe fitting type product worsens, and then can influence the machining precision of pipe fitting type product.

Disclosure of Invention

The invention aims to provide clamping equipment for a thin-wall three-way pipe, which aims to solve the technical problems that in the prior art, an air cylinder cannot clamp a pipe type product, so that the repeatability positioning precision of the pipe type product is poor, and the machining precision of the pipe type product is influenced.

The invention provides a thin-wall three-way pipe clamping device which comprises a workbench, two groups of moving assemblies and two groups of rotating and fixing assemblies, wherein the moving assemblies are fixedly arranged on the workbench, and the two groups of rotating and fixing assemblies are symmetrically arranged on the moving assemblies.

Furthermore, the workbench comprises four table legs, two first fixing plates and a vertical plate, wherein the four table legs are symmetrically arranged below the workbench in pairs, the two first fixing plates are arranged, the two ends of each first fixing plate are respectively connected with the corresponding table leg, and the two ends of the vertical plate are connected with the two first fixing plates.

Further, the moving assembly comprises a first motor, a first rotating shaft, first umbrella teeth and moving parts, the first motor is fixedly arranged on the vertical plate, one end of the first rotating shaft is connected with the output end of the first motor, the other end of the first rotating shaft penetrates through the workbench to be connected with the first umbrella teeth, the first umbrella teeth are arranged above the workbench, the moving parts are two groups, and the moving parts are symmetrically arranged on the workbench.

Further, each group of moving parts comprises a second bevel gear, a lead screw, a supporting seat, a moving plate, a moving block, a fixed seat, a sliding rail and a sliding block, the second bevel gear is meshed with the first bevel gear, one end of the lead screw is connected with the second bevel gear, the other end of the second bevel gear is connected with the supporting seat, the supporting seat is fixedly arranged on the workbench, the moving plate is arranged above the lead screw, the moving block is fixedly arranged below the moving plate and in threaded connection with the lead screw, the fixed seat is fixedly arranged on one side of the workbench, the sliding rail is fixedly arranged on the fixed seat, and the sliding block is fixedly arranged below the moving plate and in contact with the sliding rail.

Further, the rotation fixing assembly comprises a rotating component and a fixing component, the rotating component is fixedly arranged on one side of the moving plate, and the fixing component is connected with the output end of the rotating component.

Further, the rotating component comprises a mounting plate, two mounting seats, a second motor, two second rotating shafts, two swing rods, a rotating disc, rotating columns and a third rotating shaft, the mounting plate is fixedly arranged on one side of the moving plate, the two mounting seats are symmetrically arranged on the mounting plate, the second motor is fixedly arranged on one side of one mounting seat, one end of the second rotating shaft is connected with the output end of the second motor, the other end of the second rotating shaft penetrates through one mounting seat and extends to the front of the mounting seat, the swing rods are arranged on the second rotating shaft, the rotating disc is connected with the second rotating shaft, the rotating disc is rotatably arranged on one side of the other set of mounting seats, the two rotating columns are symmetrically arranged on the rotating disc, limiting grooves are formed in the rotating disc, and one end of the third rotating shaft is connected with the rotating disc, the other end of the third rotating shaft penetrates through the other mounting seat and the moving plate to be connected with the fixed part.

Furthermore, the fixing part comprises a Y-shaped base, two fixing sleeves, two V-shaped supporting arms, two air cylinders, two first extension bars, two first connecting rods, two second connecting rods and two clamping blocks, the Y-shaped base is connected with a third rotating shaft, the two fixing sleeves are fixedly arranged at two ends of the Y-shaped base, the two groups of V-shaped supporting arms are respectively inserted in the two groups of fixing sleeves, the air cylinders are fixedly arranged on the Y-shaped base, the first extension bar is connected with the output end of the air cylinders, one end of each first connecting rod is hinged with one side of the corresponding first extension bar, the other end of each first connecting rod is hinged with one group of V-shaped supporting arms, one end of each second connecting rod is hinged with the other side of the corresponding first extension bar, the other end of each second connecting rod is hinged with the other group of V-shaped supporting arms, and the two groups of clamping blocks are, the two groups of clamping blocks are respectively connected with the two groups of V-shaped supporting arms.

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

the three-way pipe fixing device has the advantages that the moving assembly drives the rotary fixing assembly to move on the workbench so as to fix three-way pipes with different sizes, the angle of the three-way pipe can be adjusted while the rotary fixing assembly is used for fixing the three-way pipe, so that the three-way pipe can be better processed, the working efficiency is greatly improved, the positioning precision and the processing precision of a product are improved, the labor intensity of workers is reduced, and the practicability of the device is greatly improved.

And secondly, the first motor drives the first rotating shaft to rotate, the first rotating shaft drives the first bevel gear to rotate, the first bevel gear is meshed with the second bevel gear, the second bevel gear is in threaded connection with the moving block, the sliding block can slide on the slide rail, the moving block is matched with the sliding block to work, the moving plate is driven to move, so that the rotating fixing component is driven to move, the rotating fixing component can be driven to move by the aid of the moving component, the three-way pipes with different sizes can be fixed, and the practicability of the device is greatly improved.

And thirdly, through the second motor drives the second axis of rotation and rotates, and the second axis of rotation drives the pendulum rod and rotates, and the pendulum rod can take place the contact with the rotation post in the pivoted, can drive the rotary disk and remove at the spacing inslot of carousel when the second axis of rotation drives the rotary disk pivoted simultaneously, and when the pendulum rod contacted with the rotation post, the rotation post will drive the carousel and rotate, and the carousel drives the third axis of rotation and rotates, and the third axis of rotation drives fixed part and rotates to drive the three-way pipe and rotate, through rotary part's setting can drive the three-way pipe and rotate, need not that the staff manually carries out angle modulation, has improved the precision of location, has improved work efficiency and this device's practicality simultaneously greatly.

The cylinder drives the first extension rod to stretch out and draw back, the first extension rod drives the first connecting rod and the second connecting rod to move, the first connecting rod and the second connecting rod are hinged to the two groups of V-shaped supporting arms, and the cylinder drives the first extension rod to upwards push the clamping block to fasten the three-way pipe, so that the fixing part can automatically fix the three-way pipe, the work intensity is greatly reduced, and the damage of the three-way pipe to the hands of the work personnel during the processing operation is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a first perspective structure of the present invention;

FIG. 2 is a schematic view of a second perspective structure of the present invention;

FIG. 3 is a schematic view of a moving part according to a first perspective of the present invention;

FIG. 4 is a schematic view of a rotating member according to a first aspect of the present invention;

fig. 5 is a first perspective structural view of the fixing member of the present invention.

Reference numerals: the table comprises a workbench 1, a moving assembly 2, a rotary fixing assembly 3, table legs 11, a first fixing plate 12, a vertical plate 13, a first motor 21, a first rotating shaft 22, a first bevel gear 23, a moving part 24, a second bevel gear 241, a screw rod 242, a supporting seat 243, a moving plate 244, a moving block 245, a fixed seat 246, a sliding rail 247, a sliding block 248, a rotating part 31, a fixing part 32, a mounting plate 311, a mounting seat 312, a second motor 313, a second rotating shaft 314, a swinging rod 315, a rotating disc 316, a rotating disc 317, a rotating column 318, a third rotating shaft 319, a Y-shaped base 321, a fixing sleeve 322, a V-shaped supporting arm 323, an air cylinder 324, a first lengthening rod 325, a first connecting rod 326, a second connecting rod 327 and a clamping block 328.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention provides thin-wall three-way pipe clamping equipment which comprises a workbench 1, moving assemblies 2 and rotary fixing assemblies 3, wherein the moving assemblies 2 are fixedly arranged on the workbench 1, the rotary fixing assemblies 3 are provided with two groups, the two groups of rotary fixing assemblies 3 are symmetrically arranged on the moving assemblies 2, and in a working state, the moving assemblies 2 drive the rotary fixing assemblies 3 to move on the workbench 1 so as to fix three-way pipes with different sizes, and the rotary fixing assemblies 3 are arranged to fix the three-way pipes and adjust the angles of the three-way pipes so as to better process the three-way pipes.

Specifically, the workbench 1 comprises table legs 11, first fixing plates 12 and vertical plates 13, wherein four table legs 11 are arranged, four table legs 11 are symmetrically arranged below the workbench 1 in pairs, two first fixing plates 12 are arranged, two ends of each first fixing plate 12 are respectively connected with the table legs 11, and two ends of each vertical plate 13 are connected with the two first fixing plates 12.

Specifically, the moving assembly 2 includes a first motor 21, a first rotating shaft 22, a first bevel gear 23 and a moving member 24, the first motor 21 is fixedly disposed on the vertical plate 13, one end of the first rotating shaft 22 is connected to an output end of the first motor 21, the other end of the first rotating shaft 22 penetrates through the workbench 1 and is connected to the first bevel gear 23, the first bevel gear 23 is disposed above the workbench 1, the moving member 24 is provided with two sets, and the two sets of moving members 24 are symmetrically disposed on the workbench 1.

Specifically, each set of moving parts 24 includes a second bevel gear 241, a lead screw 242, a supporting seat 243, a moving plate 244, a moving block 245, a fixed seat 246, a sliding rail 247, and a sliding block 248, the second bevel gear 241 is engaged with the first bevel gear 23, one end of the lead screw 242 is connected with the second bevel gear 241, the other end of the second bevel gear 241 is connected with the supporting seat 243, the supporting seat 243 is fixedly disposed on the worktable 1, the moving plate 244 is disposed above the lead screw 242, the moving block 245 is fixedly disposed below the moving plate 244 and is in threaded connection with the lead screw 242, the fixed seat 246 is fixedly disposed at one side of the worktable 1, the sliding rail 247 is fixedly disposed on the sliding block 246, the moving plate 248 is fixedly disposed below the moving plate 244 and is in contact with the sliding rail 247, the first rotating shaft 22 is driven to rotate by the first motor 21, the first rotating shaft 22 drives the first bevel gear 23 to rotate, first bevel gear 23 meshes with second bevel gear 241, and second bevel gear 241 and movable block 245 threaded connection, sliding block 248 can slide on slide rail 247, and movable block 245 cooperation sliding block 248 work drives movable plate 244 and removes to drive rotatory fixed subassembly 3 and remove, through the setting of removal subassembly 2 can drive rotatory fixed subassembly 3 and remove, can fix the three-way pipe of equidimension not, improved the practicality of this device greatly.

Specifically, the rotating and fixing assembly 3 comprises a rotating component 31 and a fixing component 32, the rotating component 31 is fixedly arranged on one side of the moving plate 244, the fixing component 32 is connected with the output end of the rotating component 31, the angle of the tee pipe can be adjusted through the rotating component 31, and the tee pipe can be clamped through the fixing component 32.

Specifically, the rotating component 31 includes a mounting plate 311, a mounting seat 312, a second motor 313, two rotating columns 318, two swinging rods 315, a rotating disk 316, a rotating disk 317, two rotating columns 318 and a third rotating shaft 319, the mounting plate 311 is fixedly arranged on one side of the moving plate 244, the two mounting seats 312 are symmetrically arranged on the mounting plate 311, the second motor 313 is fixedly arranged on one side of the mounting seat 312, one end of the second rotating shaft 314 is connected with the output end of the second motor 313, the other end of the second rotating shaft 314 penetrates through one mounting seat 312 and extends to the front of the mounting seat 312, the swinging rods 315 are arranged on the second rotating shaft 314, the rotating disk 316 is connected with the second rotating shaft 314, the rotating disk 317 is rotatably arranged on one side of the other set of mounting seats 312, the two rotating columns 318 are symmetrically arranged on the rotating disk 317, the rotating disc 317 is provided with a limiting groove, one end of the third rotating shaft 319 is connected with the rotating disc 317, the other end of the third rotating shaft 319 penetrates through the other mounting seat 312 and the moving plate 244 to be connected with the fixed part 32, the second motor 313 drives the second rotating shaft 314 to rotate, the second rotating shaft 314 drives the swing rod 315 to rotate, the swing rod 315 rotates and contacts with the rotating column 318, meanwhile, the second rotating shaft 314 drives the rotating disc 316 to rotate and drives the rotating disc 316 to move in the limiting groove of the rotating disc 317, the rotating column 318 drives the rotating disc 317 to rotate while the swing rod 315 contacts with the rotating column 318, the rotating disc 317 drives the third rotating shaft 319 to rotate, the third rotating shaft 319 drives the fixed part 32 to rotate, thereby driving the three-way pipe to rotate, and the three-way pipe can be driven to rotate by the rotating part 31, need not the staff and manually carry out angle modulation, improved the precision of location, improved work efficiency and this device's practicality simultaneously greatly.

Specifically, the fixing component 32 includes a Y-shaped base 321, fixing sleeves 322, V-shaped support arms 323, two air cylinders 324, a first extension bar 325, a first connecting rod 326, a second connecting rod 327, and a clamping block 328, the Y-shaped base 321 is connected to a third rotating shaft 319, the fixing sleeves 322 are provided with two sets of the fixing sleeves 322, the two sets of the V-shaped support arms 323 are fixedly disposed at two ends of the Y-shaped base 321, the two sets of the V-shaped support arms 323 are respectively inserted into the two sets of the fixing sleeves 322, the air cylinders 324 are fixedly disposed on the Y-shaped base 321, the first extension bar 325 is connected to an output end of the air cylinder 324, one end of the first connecting rod 326 is hinged to one side of the first extension bar 325, the other end is hinged to one set of the V-shaped support arms 323, one end of the second connecting rod 327 is hinged to the other side of the, the other end of the second connecting rod 327 is hinged to another group of V-shaped supporting arms 323, the clamping blocks 328 are provided with two groups, the two groups of clamping blocks 328 are respectively connected with the two groups of V-shaped supporting arms 323, the cylinder 324 drives the first extension rod 325 to stretch, the first extension rod 325 drives the first connecting rod 326 and the second connecting rod 327 to move, the first connecting rod 326 and the second connecting rod 327 are hinged to the two groups of V-shaped supporting arms 323, and therefore the cylinder 324 drives the first extension rod 325 to push upwards so that the clamping blocks 328 clamp and fix the three-way pipe, automatic fixing of the three-way pipe can be achieved through the fixing part 32, operation of workers is not needed, working strength is greatly reduced, and meanwhile, the three-way pipe is prevented from being injured to the hands of the workers during processing operation.

The working principle of the invention is as follows: in the working state, the moving component 2 drives the rotating and fixing component 3 to move on the workbench 1 so as to fix three-way pipes with different sizes, the angle of the three-way pipe can be adjusted while the three-way pipe is fixed through the arrangement of the rotating and fixing component 3 so as to better process the three-way pipe, firstly, the fixing component 32 drives the first extension bar 325 to extend and retract through the air cylinder 324, the first extension bar 325 drives the first connecting rod 326 and the second connecting rod 327 to move, the first connecting rod 326 and the second connecting rod 327 are hinged with the two groups of V-shaped supporting arms 323, so that the air cylinder 324 drives the first extension bar 325 to push upwards to enable the clamping block 328 to clamp the three-way pipe, then, the moving component 2 drives the first rotating shaft 22 to rotate through the first motor 21, the first rotating shaft 22 drives the first bevel gear 23 to rotate, the first bevel gear 23 is engaged with the second bevel gear 241, the second bevel gear 241 is in threaded connection with the moving block 245, the sliding block 248 can slide on the sliding rail 247, the moving block 245 cooperates with the sliding block 248 to work to drive the moving plate 244 to move, thereby driving the rotation fixing component 3 to move, and then the rotating component 31 drives the second rotating shaft 314 to rotate through the second motor 313, the second rotating shaft 314 drives the swinging rod 315 to rotate, the swinging rod 315 rotates while contacting with the rotating column 318, meanwhile, the second rotating shaft 314 drives the rotating disc 316 to rotate and simultaneously drives the rotating disc 316 to move in the limiting groove of the rotating disc 317, while the swing link 315 is in contact with the rotating column 318, the rotating column 318 will drive the rotating disc 317 to rotate, the rotating disc 317 drives the third rotating shaft 319 to rotate, and the third rotating shaft 319 drives the fixing part 32 to rotate, so as to drive the three-way pipe to rotate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a thin wall three-way pipe clamping equipment which characterized in that: including workstation (1), removal subassembly (2) and rotation fixing component (3), remove the fixed setting on workstation (1) of subassembly (2), rotation fixing component (3) is equipped with two sets ofly, and two sets of rotation fixing component (3) symmetry sets up on removing subassembly (2).

2. The thin-walled tee clamp apparatus of claim 1, wherein: the workbench (1) comprises table legs (11), first fixing plates (12) and vertical plates (13), wherein four table legs (11) are arranged, four table legs (11) are symmetrically arranged below the workbench (1), the number of the first fixing plates (12) is two, two ends of each first fixing plate (12) are respectively connected with the corresponding table leg (11), and two ends of each vertical plate (13) are connected with the corresponding first fixing plate (12).

3. The thin-walled tee clamp apparatus of claim 2, wherein: remove subassembly (2) and include first motor (21), first axis of rotation (22), first bevel gear (23) and moving part (24), first motor (21) is fixed to be set up on riser (13), the one end and the first motor (21) output of first axis of rotation (22) are connected, the other end of first axis of rotation (22) runs through workstation (1) and is connected with first bevel gear (23), first bevel gear (23) set up in workstation (1) top, moving part (24) are equipped with two sets ofly, two sets of moving part (24) symmetry sets up on workstation (1).

4. The thin-walled tee clamp apparatus of claim 3, wherein: each group of moving parts (24) comprises a second bevel gear (241), a screw rod (242), a supporting seat (243), a moving plate (244), a moving block (245), a fixed seat (246), a sliding rail (247) and a sliding block (248), the second bevel gear (241) is meshed with the first bevel gear (23), one end of the screw rod (242) is connected with the second bevel gear (241), the other end of the second bevel gear (241) is connected with a supporting seat (243), the supporting seat (243) is fixedly arranged on the workbench (1), the moving plate (244) is arranged above the screw rod (242), the moving block (245) is fixedly arranged below the moving plate (244) and is in threaded connection with the screw rod (242), the fixed seat (246) is fixedly arranged at one side of the workbench (1), the slide rail (247) is fixedly arranged on the fixed seat (246), the sliding block (248) is fixedly arranged below the moving plate (244) and is in contact with the sliding rail (247).

5. The thin-walled tee clamp apparatus of claim 4, wherein: the rotary fixing assembly (3) comprises a rotating component (31) and a fixing component (32), the rotating component (31) is fixedly arranged on one side of the moving plate (244), and the fixing component (32) is connected with the output end of the rotating component (31).

6. The thin-walled tee clamp apparatus of claim 5, wherein: the rotating component (31) comprises a mounting plate (311), a mounting seat (312), a second motor (313), a second rotating shaft (314), a swinging rod (315), a rotating disk (316), a rotating disk (317), a rotating column (318) and a third rotating shaft (319), the mounting plate (311) is fixedly arranged on one side of the moving plate (244), two mounting seats (312) are symmetrically arranged on the mounting plate (311), the second motor (313) is fixedly arranged on one side of one mounting seat (312), one end of the second rotating shaft (314) is connected with the output end of the second motor (313), the other end of the second rotating shaft (314) penetrates through one mounting seat (312) and extends to the front of the mounting seat (312), the swinging rod (315) is arranged on the second rotating shaft (314), and the rotating disk (316) is connected with the second rotating shaft (314), the carousel (317) rotate and set up the one side at another group mount pad (312), it is equipped with two to rotate post (318), and two rotate post (318) symmetries set up on carousel (317), the spacing groove has been seted up on carousel (317), the one end and the carousel (317) of third axis of rotation (319) are connected, the other end of third axis of rotation (319) runs through another mount pad (312) and movable plate (244) and is connected with fixed part (32).

7. The thin-walled tee clamp apparatus of claim 6, wherein: the fixing part (32) comprises a Y-shaped base (321), fixing sleeves (322), V-shaped supporting arms (323), an air cylinder (324), a first extension bar (325), a first connecting rod (326), a second connecting rod (327) and clamping blocks (328), the Y-shaped base (321) is connected with a third rotating shaft (319), the number of the fixing sleeves (322) is two, the two fixing sleeves (322) are fixedly arranged at two ends of the Y-shaped base (321), the V-shaped supporting arms (323) are provided with two groups, the two groups of V-shaped supporting arms (323) are respectively inserted into the two groups of fixing sleeves (322), the air cylinder (324) is fixedly arranged on the Y-shaped base (321), the first extension bar (325) is connected with the output end of the air cylinder (324), one end of the first connecting rod (326) is hinged with one side of the first extension bar (325), the other end of the second connecting rod (327) is hinged with the other side of the first extension rod (325), the other end of the second connecting rod (327) is hinged with the other group of V-shaped supporting arms (323), two groups of clamping blocks (328) are arranged, and the two groups of clamping blocks (328) are respectively connected with the two groups of V-shaped supporting arms (323).