Tool changer for a glass processing center

Abstract

The application relates to the technical field of numerical control automation equipment, and discloses a tool changing device for a glass processing center, a horizontal plate, a shell, a cylinder sliding groove mechanism, a support mechanism, a rotary dismounting mechanism and a tool head. The rotary dismounting mechanism is arranged, the number of moving parts is reduced, the moving inertia is reduced through horizontal axial movement, vibration impact generated due to large swing of a mechanical hand or rotation of a tool magazine during high-speed tool changing is inhibited, the glass fine processing scene sensitive to vibration is suitable, the sliding groove cooperation structure of the inner cylinder and the inner shell improves movement stability and reduces the risk of eccentric load wear, the double-head clamping mechanism is arranged, the geometric constraint of the special-shaped sliding groove is utilized, the rotary cylinder is synchronously driven to complete 20-40-degree self-adaptive closing of double clamping blocks within limited linear travel, the curved surface of the clamping block and the tool head is self-adaptively clamped, the problem of clamping force attenuation or tool throwing caused by wear of a traditional claw type mechanical hand is solved, and the tool changing device is especially suitable for the working condition of frequent replacement of heavy tools in glass processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control automation equipment, more particularly to a tool changer for a glass processing center. BACKGROUND

[0002] The tool changer for glass processing is a key component for glass processing centers or special machines, and its core function is to realize automatic tool replacement to meet different cutting, grinding, drilling and other process requirements, improve processing efficiency and precision, including tool magazine system, manipulator and tool changer mechanism.

[0003] The existing automatic tool changer relies on independent rotary drive units for tool disassembly and clamping, and cooperates with complex linkages or cam mechanisms to achieve the opening and closing of the clamping jaw. In addition, a linear actuator is needed to complete the axial tool pulling action. This separate design results in a long transmission chain and a large number of moving parts, increasing manufacturing costs and failure rates and reducing tool changing accuracy.

[0004] And the traditional manipulator jaw generally uses high-precision machined V-blocks or fixed profile clamps, which can ensure the clamping rigidity of standard tools, but cannot be compatible with large-diameter special-shaped grinding heads or non-standard diamond tools commonly used in glass processing. Frequent replacement of special clamps will greatly reduce production efficiency. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a tool changer for a glass processing center to solve the problems in the background art.

[0006] The present application provides the following technical scheme: a tool changer for a glass processing center, comprising a horizontal plate, the bottom of the horizontal plate is fixedly connected with an outer shell, the bottom of the horizontal plate and the inner side of the outer shell are fixedly connected with a cylinder sliding groove mechanism, the bottom of the horizontal plate and one side of the cylinder sliding groove mechanism are provided with a support mechanism, one side of the support mechanism is fixedly connected with a rotary disassembly mechanism, the inside of the rotary disassembly mechanism is provided with a tool head.

[0007] Further, the device restricts the tool head through the rotary disassembly mechanism, and then completes the flipping through the support mechanism to reach the tool magazine position for tool placing and tool changing operation.

[0008] Further, the cylinder sliding groove mechanism comprises a large sliding groove fixedly connected to one side of the top of the horizontal plate, the top of the horizontal plate and one side of the large sliding groove are fixedly connected with a base one, the inner side of the base one is fixedly connected with a cylinder one, one side of the cylinder one is fixedly connected with a sliding rod one in a sliding manner, the other side of the sliding rod one is fixedly connected with a connecting plate, and the other end of the connecting plate is provided with a sliding block near one side of the cylinder one and the top of the large sliding groove.

[0009] Further, the support mechanism comprises a base two fixedly connected to the top of the horizontal plate away from the large chute, the inner side of the base two is rotatably connected with a rotating rod one, the side of the rotating rod one close to the large chute and the top of the sliding block is provided with a gear, the inner side of the base two and the outer side of the rotating rod one are fixedly connected with a fixed sleeve, the outer side of the fixed sleeve is fixedly connected with a locking block, one side of the locking block is fixedly connected with a fixed block.

[0010] Further, the cylinder one can drive the sliding rod one to reciprocate along the large chute, the other side of the sliding rod one is fixedly connected with a connecting plate, so the connecting plate and the sliding rod one will move synchronously, the connecting plate will drive the sliding block to move linearly on the large chute, through the mutual meshing of the gear teeth, the linear motion of the sliding block will cause the rotation of the gear, the gear and the rotating rod one are fixedly connected, so they will also rotate together, the rotating rod one drives the fixed sleeve, the locking block and the fixed block to rotate together, the displacement of the sliding block is adjusted to control the rotation angle of the locking block and the fixed block, the maximum rotation angle can reach 20 to 40 degrees.

[0011] Further, the rotating and dismounting mechanism comprises a cylinder one fixedly connected to the other side of the fixed block, the other side of the cylinder one is fixedly connected with a cylinder two, the other side of the cylinder two is fixedly connected with a cylinder three, the other side of the cylinder three is fixedly connected with a cylinder four, the other end of the cylinder four is fixedly connected with a rotating cylinder inside.

[0012] Further, the other side of the fixed block and the inside of the cylinder two are fixedly connected with a spring, the other side of the spring is slidingly connected with a cylinder two inside the cylinder one, the other side of the cylinder two is fixedly connected with a rotating rod two, the inner side of the cylinder two and the outer part of the rotating rod two are provided with an inner clamping mechanism, the other side of the inner clamping mechanism is provided with a double-head clamping mechanism, the inner side of the double-head clamping mechanism is provided with a tool head.

[0013] Further, the inner clamping mechanism comprises an inner shell slidingly connected to the outer part of the rotating rod two, the inner part of the inner shell and the outer part of the rotating rod two are provided with an inner cylinder, the outer part of the inner cylinder is fixedly connected with an outer protruding block.

[0014] Further, the other end of the inner cylinder is fixedly connected with a short rod, the double-head clamping mechanism comprises a straight rod fixedly connected to the other end of the inner cylinder and the outer side of the short rod, the two ends of the straight rod are fixedly connected with double circular rods.

[0015] Further, the outer part of the double circular rods is rotatably connected with a rotating cylinder, the outer surface of the rotating cylinder is provided with a special-shaped sliding groove close to the position of the screw rod, the end of the rotating cylinder away from the double circular rods is fixedly connected with a clamping block, the inner side of the clamping block is clamped with a tool head.

[0016] Further, when the tool needs to be replaced, cylinder two will drive the horizontal movement of the second rotating rod two, first cylinder two pulls the second rotating rod two to move towards the side of the cylinder two, the second rotating rod two drives the outer fixedly connected inner cylinder, so that the inner cylinder moves along the sliding groove on the inner side of the inner shell towards the cylinder two, the other end of the inner cylinder is fixedly connected with the straight rod, and the straight rod drives the rotating cylinder to move towards the cylinder two, in the movement process, the special-shaped sliding groove arranged on the rotating cylinder is limited by the top screw rod, the screw rod is clamped in the special-shaped sliding groove and is fixedly connected with the cylinder four, so that the rotating cylinder rotates by an angle greater than degrees and less than degrees around the double circular rods while moving towards the cylinder two, and the clamping block is clamped and pressed on the tool head, the rotating completes the clamping tool function, the movement towards the cylinder two completes the tool dismounting function, and after the clamping and dismounting, the locking block and the fixed block drive the rotating action to be completed, and the dismounted tool is transported to the tool magazine position, at this time, cylinder two pulls the second rotating rod two to move away from the side of the cylinder two, the second rotating rod two drives the outer fixedly connected inner cylinder, so that the inner cylinder moves along the sliding groove on the inner side of the inner shell away from the side of the cylinder two, the other end of the inner cylinder is fixedly connected with the straight rod, and the straight rod drives the rotating cylinder to move away from the cylinder two, in the movement process, the special-shaped sliding groove arranged on the rotating cylinder is limited by the top screw rod, and the rotating is completed around the double circular rods under the limitation of the screw rod by an angle greater than degrees and less than degrees, and the clamping block is relatively unfolded, and the pressing on the tool head is relaxed, preparing for replacing the new tool.

[0017] Technical effects and advantages of the present application:

[0018] The present application is provided with a rotating dismounting mechanism, a single cylinder drives the horizontal movement of the second rotating rod two, the inner cylinder is connected with the second rotating rod two, the guide of the special-shaped sliding groove and the fixed screw rod converts the linear displacement into the precise rotating clamping action of the rotating cylinder, the axial traction of the tool dismounting is completed, the complex transmission chain required by the separated clamping unit and the tool pulling device in the traditional tool changing mechanism is simplified, the number of moving parts is reduced, the motion inertia is reduced through horizontal axial movement, the vibration impact generated by the large swing of the mechanical hand or the rotation of the tool magazine during high-speed tool changing is inhibited, it is suitable for the glass finishing scene sensitive to vibration, and the sliding groove cooperation structure of the inner cylinder and the inner shell improves the motion stability and reduces the risk of eccentric wear.

[0019] The application is provided with a double-head clamping mechanism, utilizes the geometric constraint of the special-shaped sliding groove to make the rotary drum drive the double clamping blocks to complete 20-40 degree self-adaptive closing within a limited linear stroke, the lever type clamping structure generates radial clamping force through the short stroke cylinder, the curved surface self-adaptive clamping design of the clamping blocks and the tool head breaks through the compatible limit of non-standard tools, such as large diameter glass grinding head and special-shaped diamond tool, and the cooperative control of spring preloading and cylinder return ensures high rigidity locking during clamping and realizes quick and impact-free release during tool loosening, solves the clamping force attenuation or tool throwing problem caused by wear of the traditional claw type manipulator, and is especially suitable for the working condition of frequent replacement of heavy tools in glass processing. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a whole structure schematic diagram of the application.

[0021] Figure 2 It is a whole structure shell diagram of the application.

[0022] Figure 3 It is a cylinder sliding groove mechanism structure schematic diagram of the application.

[0023] Figure 4 It is a support mechanism structure schematic diagram of the application.

[0024] Figure 5 It is a rotary dismounting mechanism structure schematic diagram of the application.

[0025] Figure 6 It is a rotary dismounting mechanism structure section schematic diagram of the application.

[0026] Figure 7 It is an inner clamping mechanism structure schematic diagram of the application.

[0027] Figure 8 It is a double-head clamping mechanism structure explosion schematic diagram of the application.

[0028] Figure 9 It is a rotary drum structure schematic diagram of the application.

[0029] The reference signs are: 1, shell; 2, horizontal plate; 3, rotating dismounting mechanism; 301, cylinder one; 302, cylinder two; 303, cylinder three; 304, cylinder four; 3041, screw rod; 305, double-head clamping mechanism; 3051, rotating cylinder; 3052, clamping block; 3053, special-shaped sliding groove; 3054, straight rod; 3055, double-cylinder rod; 306, rotating rod two; 307, air cylinder two; 3071, spring; 308, inner clamping mechanism; 3081, inner shell; 3082, inner cylinder; 3083, outer protruding block; 3084, short rod; 4, tool head; 5, air cylinder sliding groove mechanism; 501, large sliding groove; 502, base one; 503, air cylinder one; 504, sliding rod one; 505, connecting plate; 506, sliding block; 507, gear; 508, rotating rod one; 6, support mechanism; 601, base two; 602, locking block; 603, fixed block; 604, fixed sleeve. DETAILED DESCRIPTION

[0030] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples. The tool changer for a glass processing center involved in the present application is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0031] With reference to Figure 1 and Figure 2 , the present application provides a tool changer for a glass processing center, comprising a horizontal plate 2, characterized in that: the bottom of the horizontal plate 2 is circumferentially fixedly connected with a shell 1, the bottom of the horizontal plate 2 and the inner side of the shell 1 are fixedly connected with an air cylinder sliding groove mechanism 5, the bottom of the horizontal plate 2 and one side of the air cylinder sliding groove mechanism 5 are provided with a support mechanism 6, one side of the support mechanism 6 is fixedly connected with a rotating dismounting mechanism 3, and the inside of the rotating dismounting mechanism 3 is provided with a tool head 4.

[0032] With reference to Figure 1 and Figure 2 , the device limits the tool head 4 through the rotating dismounting mechanism 3, and then completes 180-degree overturning to reach the tool magazine position through the support mechanism 6 to put and change tools.

[0033] With reference to Figure 3The cylinder sliding groove mechanism 5 comprises a large sliding groove 501 fixedly connected to one side of the top of the horizontal plate 2, a base 502 fixedly connected to the top of the horizontal plate 2 and one side of the large sliding groove 501, a cylinder 503 fixedly connected to the inner side of the base 502, a sliding rod 504 fixedly and slidably connected to one side of the cylinder 503, a connecting plate 505 fixedly connected to the other side of the sliding rod 504, and a sliding block 506 arranged at the other end of the connecting plate 505 close to one side of the cylinder 503 and the top of the large sliding groove 501.

[0034] With reference to Figure 4 The support mechanism 6 comprises a base 601 fixedly connected to the top of the horizontal plate 2 away from the large sliding groove 501, a rotating rod 508 rotatably connected to the inner side of the base 601, a gear 507 arranged at one side of the rotating rod 508 close to the large sliding groove 501 and the top of the sliding block 506, a fixing sleeve 604 fixedly connected to the inner side of the base 601 and the outer side of the rotating rod 508, a locking block 602 fixedly connected to the outer side of the fixing sleeve 604, and a fixing block 603 fixedly connected to one side of the locking block 602.

[0035] With reference to Figure 3 And Figure 4 The cylinder 503 can drive the sliding rod 504 to reciprocate along the large sliding groove 501, the connecting plate 505 is fixedly connected to the other side of the sliding rod 504, so that the connecting plate 505 moves synchronously with the sliding rod 504, the connecting plate 505 drives the sliding block 506 to move linearly on the large sliding groove 501, the linear movement of the sliding block 506 causes the rotation of the gear 507 through the mutual engagement of the gear teeth, the gear 507 and the rotating rod 508 are fixedly connected, so they also rotate together, the rotating rod 508 drives the fixing sleeve 604, the locking block 602 and the fixing block 603 to rotate together, the rotation angle of the locking block 602 and the fixing block 603 is controlled by adjusting the displacement of the sliding block 506, and the maximum rotation angle is 180 degrees.

[0036] With reference to Figure 5 The rotating and dismounting mechanism 3 comprises a cylinder 301 fixedly connected to the other side of the fixing block 603, a cylinder 302 fixedly connected to the other side of the cylinder 301, a cylinder 303 fixedly connected to the other side of the cylinder 302, a cylinder 304 fixedly connected to the other side of the cylinder 303, and a rotating cylinder 3051 fixedly connected to the inner side of the other end of the cylinder 304.

[0037] With reference to Figure 6The other side of the fixed block 603 and the inside of the cylinder two 302 are fixedly connected with the spring 3071, the other side of the spring 3071 and the inside of the cylinder one 301 are slidably connected with the air cylinder two 307, the other side of the air cylinder two 307 is fixedly connected with the rotating rod two 306, the inside of the cylinder two 302 and the outside of the rotating rod two 306 are provided with the inner clamping mechanism 308, the other side of the inner clamping mechanism 308 is provided with the double-head clamping mechanism 305, and the inside of the double-head clamping mechanism 305 is provided with the tool head 4.

[0038] With reference to Figure 7 The inner clamping mechanism 308 comprises the inner shell 3081 slidably connected outside the rotating rod two 306, the inside of the inner shell 3081 and the outside of the rotating rod two 306 are provided with the inner cylinder 3082, and the outside of the inner cylinder 3082 is fixedly connected with the outer protruding block 3083.

[0039] With reference to Figure 8 The other end of the inner cylinder 3082 is fixedly connected with the short rod 3084, the double-head clamping mechanism 305 comprises the straight rod 3054 fixedly connected outside the inner cylinder 3082 and the short rod 3084, and both ends of the straight rod 3054 are fixedly connected with the double circular rod 3055.

[0040] With reference to Figure 9 The outside of the double circular rod 3055 is rotatably connected with the rotating cylinder 3051, the outer surface of the rotating cylinder 3051 is provided with the special-shaped sliding groove 3053 close to the position of the screw rod 3041, one end of the rotating cylinder 3051 away from the double circular rod 3055 is fixedly connected with the clamping block 3052, and the inside of the clamping block 3052 is clamped with the tool head 4.

[0041] With reference to Figure 7 and Figure 8, need to change the knife, cylinder two 307 will drive the second rotating rod 306 in the horizontal plane left and right movement, first cylinder two 307 traction rotating rod two 306 to the side close to the cylinder two 302 movement, rotating rod two 306 with the external fixed connection inner cylinder 3082, so that the inner cylinder 3082 along the inner side of the inner shell 3081 sliding groove also to the cylinder two 302 movement, the other end of the inner cylinder 3082 fixed connection straight rod 3054, straight rod 3054 will rotating drum 3051 synchronous movement to the direction of cylinder two 302, in the process of movement, rotating drum 3051 set on the special-shaped sliding groove 3053 by its top screw 3041 limit, screw 3041 clamping in the special-shaped sliding groove 3053 inside while fixedly connected to the cylinder four 304, so that rotating drum 3051 in the cylinder two 302 movement, while also in the screw 3041 limit rotating around the double round bar 3055 complete more than 20 degrees less than 40 degrees angle rotation, clamp block 3052 clamping and pressing on the tool head 4, rotating complete clamp tool function, to the cylinder two 302 direction of movement complete the function of disassembling the tool, after clamping and disassembling in the lock block 602 and fixed block 603 driven, complete the flip action, the disassembled tool to the tool magazine position, at this time cylinder two 307 traction rotating rod two 306 to the side away from the cylinder two 302 movement, rotating rod two 306 with the external fixed connection inner cylinder 3082, so that the inner cylinder 3082 along the inner side of the inner shell 3081 sliding groove also to the side away from the cylinder two 302 movement, the other end of the inner cylinder 3082 fixed connection straight rod 3054, straight rod 3054 rotating drum 3051 synchronous movement to the direction away from the cylinder two 302, in the process of movement, rotating drum 3051 set on the special-shaped sliding groove 3053 by its top screw 3041 limit, in the screw 3041 limit rotating around the double round bar 3055 complete more than 20 degrees less than 40 degrees angle rotation, clamp block 3052 relatively unfolded, relaxed the pressure on the tool head 4, for the preparation of replacement of new tool.

[0042] The working principle of the present application: when the tool needs to be replaced, the cylinder 307 will drive the rotating rod 306 to move left and right in the horizontal plane. First, the cylinder 307 pulls the rotating rod 306 to move towards the side of the cylinder 302. The rotating rod 306 drives the outer fixedly connected inner cylinder 3082, so the inner cylinder 3082 also moves towards the cylinder 302 along the sliding groove inside the inner shell 3081. The other end of the inner cylinder 3082 is fixedly connected to the straight rod 3054, which will drive the rotating cylinder 3051 to move synchronously towards the cylinder 302. During the movement, the special-shaped sliding groove 3053 provided on the rotating cylinder 3051 is limited by the top screw 3041. The screw 3041 is clamped inside the special-shaped sliding groove 3053 while being fixedly connected to the cylinder 304. Therefore, the rotating cylinder 3051 will rotate by an angle greater than 20 degrees and less than 40 degrees around the double circular rod 3055 while moving towards the cylinder 302, clamping and pressing the clamping block 3052 to the tool head 4. The rotation completes the clamping of the tool, and the movement towards the cylinder 302 completes the disassembly of the tool. At this time, the cylinder 503 can drive the sliding rod 504 to reciprocate along the large sliding groove 501. The other side of the sliding rod 504 is fixedly connected to the connecting plate 505, so the connecting plate 505 and the sliding rod 504 will move synchronously. The connecting plate 505 drives the sliding block 506 to move linearly on the large sliding groove 501. Through the mutual engagement of the gear teeth, the linear movement of the sliding block 506 will cause the rotation of the gear 507. The gear 507 and the rotating rod 508 are fixedly connected, so they will also rotate together. The rotating rod 508 drives the fixed sleeve 604, the locking block 602, and the fixed block 603 to rotate together. The displacement generated by the sliding block 506 controls the rotation angle of the locking block 602 and the fixed block 603, which can be up to 180 degrees. After clamping and disassembling, the locking block 602 and the fixed block 603 are driven to complete the flipping action, transporting the disassembled tool to the tool magazine position. At this time, the cylinder 307 pulls the rotating rod 306 to move away from the cylinder 302. The rotating rod 306 drives the outer fixedly connected inner cylinder 3082, so the inner cylinder 3082 also moves away from the cylinder 302 along the sliding groove inside the inner shell 3081. The other end of the inner cylinder 3082 is fixedly connected to the straight rod 3054, which drives the rotating cylinder 3051 to move synchronously away from the cylinder 302. During the movement, the special-shaped sliding groove 3053 provided on the rotating cylinder 3051 is limited by the top screw 3041. Under the limitation of the screw 3041, the rotating cylinder 3051 rotates by an angle greater than 20 degrees and less than 40 degrees around the double circular rod 3055, relatively expanding the clamping block 3052 and relaxing the pressing of the tool head 4, preparing for replacing the new tool.

[0043] Finally: the above only for the preferred embodiments of the present application, and not for limiting the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A tool changer for a glass processing center comprising a crossbar (2), characterized in that: The bottom of the transverse plate (2) is fixedly connected with a shell (1), the bottom of the transverse plate (2) and the inner side of the shell (1) are fixedly connected with a cylinder sliding groove mechanism (5), the bottom of the transverse plate (2) and one side of the cylinder sliding groove mechanism (5) are provided with a support mechanism (6), one side of the support mechanism (6) is fixedly connected with a rotary dismounting mechanism (3), the inside of the rotary dismounting mechanism (3) is provided with a tool head (4); The cylinder sliding groove mechanism (5) comprises a large sliding groove (501) fixedly connected to one side of the top of the transverse plate (2), a base one (502) fixedly connected to the top of the transverse plate (2) and one side of the large sliding groove (501), a cylinder one (503) fixedly connected to the inner side of the base one (502), a sliding rod one (504) fixedly and slidably connected to one side of the cylinder one (503), a connecting plate (505) fixedly connected to the other side of the sliding rod one (504), and a sliding block (506) arranged on the other end of the connecting plate (505) close to one side of the cylinder one (503) and the top of the large sliding groove (501); The support mechanism (6) comprises a base two (601) fixedly connected to the top of the transverse plate (2) away from the large sliding groove (501), a rotating rod one (508) rotatably connected to the inner side of the base two (601), a gear (507) arranged on one side of the rotating rod one (508) close to the large sliding groove (501) and the top of the sliding block (506), a fixing sleeve (604) fixedly connected to the inner side of the base two (601) and the outer side of the rotating rod one (508), a locking block (602) fixedly connected to the outer side of the fixing sleeve (604), and a fixing block (603) fixedly connected to one side of the locking block (602); The rotary dismounting mechanism (3) comprises a cylinder one (301) fixedly connected to the other side of the fixing block (603), a cylinder two (302) fixedly connected to the other side of the cylinder one (301), a cylinder three (303) fixedly connected to the other side of the cylinder two (302), a cylinder four (304) fixedly connected to the other side of the cylinder three (303), and a rotating cylinder (3051) fixedly connected to the inside of the other end of the cylinder four (304); The other side of the fixing block (603) and the inside of the cylinder two (302) are fixedly connected with a spring (3071), the other side of the spring (3071) and the inside of the cylinder one (301) are slidably connected with a cylinder two (307), the other side of the cylinder two (307) is fixedly connected with a rotating rod two (306), the inner side of the cylinder two (302) and the outside of the rotating rod two (306) are provided with an inner clamping mechanism (308), the other side of the inner clamping mechanism (308) is provided with a double-head clamping mechanism (305), and the inner side of the double-head clamping mechanism (305) is provided with the tool head (4); The inner clamping mechanism (308) comprises an inner shell (3081) slidably connected outside the second rotating rod (306), and the inner shell (3081) and the second rotating rod (306) are provided with an inner cylinder (3082) outside, and the outer side of the inner cylinder (3082) is fixedly connected with an outer protrusion (3083); The other end of the inner cylinder (3082) is fixedly connected with a short rod (3084), the double-head clamping mechanism (305) comprises a straight rod (3054) fixedly connected with the other end of the inner cylinder (3082) and the outer side of the short rod (3084), and the two ends of the straight rod (3054) are fixedly connected with double circular rods (3055); The outer side of the double circular rods (3055) is rotatably connected with a rotating cylinder (3051), the outer surface of the rotating cylinder (3051) is provided with a special-shaped sliding groove (3053) close to the position of the screw rod (3041), one end of the rotating cylinder (3051) away from the double circular rods (3055) is fixedly connected with a clamping block (3052), and the inner side of the clamping block (3052) is clamped with a tool head (4).

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