Welding and clamping tool for main valve frame

By designing a main valve frame welding clamping tool including a fixing frame, clamping device and a driving mechanism, the existing welding clamping tool has solved the problems of poor adaptability and low adjustability, and stable clamping and efficient welding of main valve frames of different sizes has been achieved.

CN222857158UActive Publication Date: 2025-05-13常熟市达德机电科技有限公司
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Patent Information

Application Number
CN202421823516.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-31
Publication Date
2025-05-13
Estimated Expiration
2034-07-31

AI Technical Summary

Technical Problem

The existing welding clamping tool has poor adaptability and low adjustability, making it difficult to adapt to the welding needs of main valve frames of different sizes, resulting in insufficient general use and inconvenient operation, and reducing production efficiency.

Method used

A main valve frame welding clamping tool is designed, including a fixing frame, a clamping device and a driving mechanism. The clamping device is provided with an end limiting member, a support member, an outer fixed clamping mechanism and an inner movable clamping mechanism. Through the combination of these components, stable clamping of the main valve frames of different sizes is achieved.

Benefits of technology

It improves the adaptability and adjustability of welding clamping tooling, can effectively clamp the main valve frames of different sizes, improves production efficiency, and is reasonable in design and easy to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a welding and clamping tool for a main valve frame. The welding and clamping tool comprises a fixing frame, a clamping device and a driving mechanism. The clamping device comprises an end limiting piece, a first supporting piece, a second supporting piece, an outer side fixed clamping mechanism and an inner side movable clamping mechanism. The clamping device is arranged above the fixing frame; the end limiting piece and the second supporting piece are arranged on the short edges of the two ends of the fixing frame, and the first supporting piece is arranged between the end limiting piece and the second supporting piece. The outer side fixed clamping mechanism and the inner side movable clamping mechanism are arranged on the fixing frame and located on the two sides of the first supporting piece. The driving mechanism is arranged above the fixing frame, and the output end of the driving mechanism is connected with the inner side movable clamping mechanism. The main valve frame welding and clamping tool is suitable for main valve frame clamping and welding, one side of the main valve frame is movably limited while the main valve frame is fixed through the device, main valve frames of different sizes can be clamped during welding, and higher universality is achieved.
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Description

Technical Field

[0001] The utility model belongs to the field of production and manufacturing, and particularly relates to a main valve frame welding clamping tool. Background Art

[0002] In modern manufacturing, the cost of welding fixtures accounts for 10%-20% of the entire production system, and its importance is self-evident. For the welding of the main valve frame, the welding fixture needs to be highly automated and versatile to meet the welding needs of main valve frames of different sizes. At the same time, the design of the clamping fixture should be reasonable and easy to operate to ensure the stability and safety of the welding process.

[0003] However, the relevant welding clamping tooling on the market currently has poor adaptability and low adjustability. When users need to clamp main valve racks of different sizes, they need to replace the tooling to complete the clamping operation. It is not versatile enough and is not conducive to operation, which reduces production efficiency. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of the utility model is to provide a main valve frame welding clamping tool, which has a reasonable design and a high degree of automation, is suitable for the clamping welding of the main valve frame. While the device is used to fix the main valve frame, a movable limiter is set on one side, which can clamp the welding of main valve frames of different sizes. It has higher versatility and is easy to operate.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides a main valve frame welding clamping tool, including a fixed frame, a clamping device and a driving mechanism; the clamping device includes an end limiter, a first support member, a second support member, an outer fixed clamping mechanism and an inner movable clamping mechanism; the clamping device is arranged above the fixed frame; the end limiter and the second support member are arranged on the short sides at both ends of the fixed frame; the first support member is arranged between the end limiter and the second support member; the outer fixed clamping mechanism and the inner movable clamping mechanism are arranged on the fixed frame and on both sides of the first support member; the driving mechanism is arranged above the fixed frame, and its output end is connected to the inner movable clamping mechanism.

[0006] Furthermore, the fixing frame includes a base, a drive connecting frame and a reinforcing plate; the drive connecting frame is arranged on the base, and the outer side of the drive connecting frame is connected to the base through a group of reinforcing plates. The arrangement of several reinforcing plates increases the stability and rigidity of the overall structure, which is conducive to bearing various forces and vibrations during the welding process, and ensures the smooth progress of the welding process.

[0007] Furthermore, the driving connection frame includes a driving support frame, a cylinder connection plate, a connecting rod fixing plate, a limit block and a limit fixing block; the cylinder connection plate is vertically connected to one end of the driving support frame; the connecting rod fixing plate is arranged above the driving support frame and vertically arranged on one side of the cylinder connection plate; the limit block is arranged on the connecting rod fixing plate, and the limit block is connected to the middle of the upper top of the connecting rod fixing plate through the limit fixing block. The design of the cylinder connection plate and the connecting rod fixing plate enables the driving mechanism to be flexibly adjusted to meet the clamping requirements of workpieces of different sizes and shapes; the limit block and the limit fixing block help to ensure the accuracy and consistency of the clamping position, prevent the workpiece from being displaced during the welding process, and ensure the welding quality.

[0008] Furthermore, the end stopper includes an end clamping plate, an end cylinder, a group of end support frames, an end support plate and an end pressure block; the end support frames are arranged opposite to each other and connected by the end support plate; the end clamping plate is arranged on one side of the end support frame; the end cylinder is installed on the end clamping plate; the end pressure block is arranged on the side of the end clamping plate away from the end cylinder and connected to the output end of the end cylinder. The end pressure block is arranged at the output end of the end cylinder to ensure that the cylinder can accurately act on the end pressure block when applying pressure to achieve precise clamping.

[0009] Furthermore, the first support member includes a first fixing plate, a group of first longitudinal support plates, a first transverse support plate and a first positioning column; the first longitudinal support plate is relatively arranged at the front of the base; the first fixing plate is arranged on the top of the two first longitudinal support plates; the first positioning column is arranged on the first fixing plate; the first transverse support plate is arranged between the two first longitudinal support plates. The first support member improves the stability of the overall structure through the dual support structure of the first longitudinal support plate and the first transverse support plate.

[0010] Furthermore, the second support member includes a second fixing plate, a group of second longitudinal supporting plates, a second transverse supporting plate and a second positioning column; the second longitudinal supporting plates are relatively arranged on the base; the second fixing plate is arranged above the two second longitudinal supporting plates; the second positioning column is arranged on the second fixing plate; the second transverse supporting plate is vertically arranged between the two second longitudinal supporting plates. The arrangement of multiple supporting plates enhances the stability of the entire tooling during the welding process and improves the accuracy and quality of welding.

[0011] Furthermore, the outer fixed clamping mechanism includes an outer fixing plate, a group of outer support frames, an outer transverse support plate, a group of outer cylinders, a group of outer pressure blocks and an outer fixing block; the outer support frames are arranged opposite to each other up and down, and the two are connected by the outer transverse support plate; the outer fixing plate is arranged on one side of the outer support frame and is fixedly connected thereto, and the connection between the outer fixing plate and the outer support frame is reinforced by a plurality of outer fixing blocks; the outer cylinder is installed at both ends of the outer fixing plate; the outer pressure blocks are respectively arranged at both ends of the side of the outer fixing plate away from the outer cylinder, and are connected to the output end of the outer cylinder. The arrangement of the outer transverse support plate provides an additional support point, which helps to disperse the force during the clamping process and reduce the risk of damage caused by excessive force on a single point.

[0012] Furthermore, the inner movable clamping mechanism includes an inner fixed plate, a group of inner support frames, an inner transverse support plate, an inner transverse connecting plate, a group of inner cylinders, an inner pressure block and an inner fixed block; the inner support frames are arranged relatively to each other, and the two are connected by the inner transverse support plate and the inner transverse connecting plate; the inner fixed plate is arranged on one side of the inner support frame, fixedly connected thereto, and the connection between the inner fixed plate and the inner support frame is connected and reinforced by the inner fixed block; the inner cylinder is installed on the inner fixed plate; the inner pressure block is respectively arranged at the two ends of the inner fixed plate away from the inner cylinder, and connected to the output end of the inner cylinder. Driven by the inner cylinder, the inner pressure block can flexibly adjust its position to achieve precise clamping of workpieces of different sizes, thereby improving the versatility and flexibility of the equipment.

[0013] Furthermore, the driving mechanism includes a driving cylinder, a driving connecting rod, a group of guide rods, a T-shaped fixing block and a slider; the driving cylinder is arranged on the cylinder connecting plate, and the output end is connected to the driving connecting rod; the other end of the driving connecting rod is connected to the inner movable clamping mechanism; there are two guide rods, which are arranged above the connecting rod fixing plate, one end is connected to the cylinder connecting plate, and the other end is connected to the connecting rod fixing plate through the T-shaped fixing block; the slider is arranged on the guide rod, and the two are slidably connected. The driving cylinder drives the driving connecting rod to move freely on the horizontal plane of the guide rod through the slider, thereby realizing accurate clamping of workpieces of different sizes and improving versatility.

[0014] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0015] The purpose of the utility model is to provide a main valve frame welding clamping tool, which has a reasonable design and a high degree of automation and is suitable for main valve frame clamping welding. While the device is used to fix the main valve frame, a movable limiter is set on one side, so that main valve frames of different sizes can be clamped for welding. It has higher versatility and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the main valve frame welding clamping tooling described in the utility model;

[0017] Figure 2 It is an isometric view of the main valve frame welding clamping tooling of the utility model;

[0018] Figure 3 This is a structural diagram of the main valve frame welding clamping tooling described in the utility model;

[0019] Figure 4 It is a schematic diagram of the end stopper of the main valve frame welding clamping tooling described in the utility model;

[0020] Figure 5 It is a schematic diagram of the end stopper of the main valve frame welding clamping tooling described in the utility model;

[0021] Figure 6 It is a schematic diagram of the outer side fixing clamping mechanism of the main valve frame welding clamping tooling of the utility model;

[0022] Figure 7 It is a schematic diagram of the inner movable clamping mechanism of the main valve frame welding clamping tooling of the utility model;

[0023] Figure 8 It is a schematic diagram of the driving mechanism of the main valve frame welding clamping tooling of the utility model;

[0024] Fig. 9 This is an example diagram of a workpiece processed by the main valve frame welding clamping tooling described in the utility model;

[0025] Fig.10 This is a structural diagram of a workpiece processed by the main valve frame welding clamping tooling described in the utility model;

[0026] In the figure:

[0027] 1-fixed frame; 11-base; 12-driving connecting frame; 13-reinforcement plate; 121-driving support frame; 122-cylinder connecting plate; 123-connecting rod fixing plate; 124-limiting block; 125-limiting fixing block;

[0028] 2-clamping device; 21-end stopper; 211-end clamping plate; 212-end cylinder; 213-end support frame; 214-end support plate; 215-end pressure block; 22-first support member; 221-first fixing plate; 222-; first longitudinal support plate; 223-first transverse support plate; 224-first positioning column; 231-second fixing plate; 232-second longitudinal support plate; 233-second transverse support plate; 234-second fixed plate Position column; 24-outer fixed clamping mechanism; 241-outer fixed plate; 242-outer support frame; 243-outer lateral support plate; 244-outer cylinder; 245-outer pressure block; 246-outer fixed block; 25-inner movable clamping mechanism; 251-inner fixed plate; 252-inner support frame; 253-inner lateral support plate; 254-inner lateral connecting plate; 255-inner cylinder; 256-inner pressure block; 257-inner fixed block;

[0029] 3-driving mechanism; 31-driving cylinder; 32-driving connecting rod; 33-guide rod; 34-T-type fixing block; 35-sliding block;

[0030] 4-processed workpiece; 41-top plate; 42-side plate and 43-welding plate. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] In this embodiment, Figure 1 The utility model discloses a main valve frame welding clamping tool, including:

[0034] A fixed frame 1, a clamping device 2 and a driving mechanism 3, wherein the clamping device 2 includes an end limiter 21, a first support member 22, a second support member 23, an outer fixed clamping mechanism 24 and an inner movable clamping mechanism 25; the clamping device 2 is arranged above the fixed frame 1; the end limiter 21 and the second support member 23 are arranged on the short sides at both ends of the fixed frame 1; the first support member 22 is arranged between the end limiter 21 and the second support member 23; the outer fixed clamping mechanism 24 and the inner movable clamping mechanism 25 are arranged on the fixed frame 1 and on both sides of the first support member 22; the driving mechanism 3 is arranged above the fixed frame 1, and its output end is connected to the inner movable clamping mechanism 25.

[0035] Example 2

[0036] On the basis of Example 1, in this embodiment, the utility model discloses a main valve frame welding clamping tool, such as Figure 1 , Figure 2 and Figure 8The fixing frame 1 includes a base 11, a driving connecting frame 12 and a reinforcing plate 13; the driving connecting frame 12 is arranged on the base 11, and the outer side of the driving connecting frame 12 is connected to the base 11 through a group of reinforcing plates 13.

[0037] In this embodiment, if Figure 1 , Figure 2 and Figure 8 The driving connecting frame 12 includes a driving support frame 121, a cylinder connecting plate 122, a connecting rod fixing plate 123, a limit block 124 and a limit fixing block 125; the cylinder connecting plate 122 is vertically connected to one end of the driving support frame 121; the connecting rod fixing plate 123 is arranged above the driving support frame 121 and vertically arranged on one side of the cylinder connecting plate 122; the limit block 124 is arranged on the connecting rod fixing plate 123, and the limit block 124 is connected to the middle part of the upper top of the connecting rod fixing plate 123 through the limit fixing block 125.

[0038] In this embodiment, Figures 1 to 5 The end limiter 21 includes an end clamping plate 211, an end cylinder 212, a group of end support frames 213, an end support plate 214 and an end pressure block 215; the end support frames 213 are arranged opposite to each other and are connected by the end support plate 214; the end clamping plate 211 is arranged on one side of the end support frame 213; the end cylinder 212 is installed on the end clamping plate 211; the end pressure block 215 is arranged on the side of the end clamping plate 211 away from the end cylinder 212, and is connected to the output end of the end cylinder 212.

[0039] In this embodiment, Figure 1 , Figure 2 and Figure 3 The first support member 22 includes a first fixed plate 221, a group of first longitudinal support plates 222, a first transverse support plate 223 and a first positioning column 224; the first longitudinal support plate 222 is relatively arranged at the front of the base 11; the first fixed plate 221 is arranged on the top of the two first longitudinal support plates 222; the first positioning column 224 is arranged on the first fixed plate 221; the first transverse support plate 223 is arranged between the two first longitudinal support plates 222.

[0040] In this embodiment, Figure 1 , Figure 2 and Figure 3The second support member 23 includes a second fixed plate 231, a group of second longitudinal support plates 232, a second transverse support plate 233 and a second positioning column 234; the second longitudinal support plates 232 are relatively arranged on the base 11; the second fixed plate 231 is arranged above the two second longitudinal support plates 232; the second positioning column 234 is arranged on the second fixed plate 231; the second transverse support plate 233 is vertically arranged between the two second longitudinal support plates 232.

[0041] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 6 The outer fixed clamping mechanism 24 includes an outer fixing plate 241, a group of outer supporting frames 242, an outer transverse supporting plate 243, a group of outer cylinders 244, a group of outer pressure blocks 245 and an outer fixing block 246; the outer supporting frames 242 are arranged opposite to each other up and down, and the two are connected by the outer transverse supporting plate 243; the outer fixing plate 241 is arranged on one side of the outer supporting frame 242 and is fixedly connected thereto, and the connection between the outer fixing plate 241 and the outer supporting frame 242 is reinforced by a plurality of outer fixing blocks 246; the outer cylinder 244 is installed at both ends of the outer fixing plate 241; the outer pressure blocks 245 are respectively arranged at both ends of one side of the outer fixing plate 241 away from the outer cylinder 244, and are connected to the output end of the outer cylinder 244.

[0042] In this embodiment, Figure 1 and Figure 7 The inner movable clamping mechanism 25 includes an inner fixing plate 251, a group of inner support frames 252, an inner transverse support plate 253, an inner transverse connecting plate 254, a group of inner cylinders 255, an inner pressure block 256 and an inner fixing block 257; the inner support frames 252 are arranged opposite to each other, and the two are connected by the inner transverse support plate 253 and the inner transverse connecting plate 254; the inner fixing plate 251 is arranged on one side of the inner support frame 252 and is fixedly connected thereto, and the connection between the inner fixing plate 251 and the inner support frame 252 is connected and reinforced by the inner fixing block 257; the inner cylinder 255 is installed on the inner fixing plate 251; the inner pressure block 256 is respectively arranged at both ends of the inner fixing plate 251 away from the inner cylinder 255, and is connected to the output end of the inner cylinder 255.

[0043] In this embodiment, Figure 1 and Figure 8The driving mechanism 3 includes a driving cylinder 31, a driving connecting rod 32, a group of guide rods 33, a T-shaped fixing block 34 and a slider 35; the driving cylinder 31 is arranged on the cylinder connecting plate 122, and the output end is connected to the driving connecting rod 32; the other end of the driving connecting rod 32 is connected to the inner movable clamping mechanism 25; there are two guide rods 33, which are arranged above the connecting rod fixing plate 123, one end is connected to the cylinder connecting plate 122, and the other end is connected to the connecting rod fixing plate 123 through the T-shaped fixing block 34; the slider 35 is arranged on the guide rod 33, and the two are slidably connected.

[0044] Example 3

[0045] On the basis of Example 1 and Example 2, in this embodiment, Fig. 9 and Fig.10 The utility model discloses a welding workpiece of a main valve frame welding clamping tool, including:

[0046] The workpiece 4 is processed, and the workpiece 4 includes: a top plate 41, a side plate 42 and a welding plate 43; the side plates 42 have two pieces, which are arranged on both sides of the top plate 41; the welding plate 43 is arranged below the two side plates 42, and is vertically connected to the top plate 41, and is limited by the second support member 22 and the third support member 23.

[0047] The working principle of the above embodiment is:

[0048] The top plate 41 of the workpiece 4 is connected to the end clamping plate 211 through one end of the end pressure block 215, and the outer sides of the two side plates 42 are respectively connected to the outer fixing plate 241 and the inner fixing plate 251 through one end of the outer pressure block 245 and one end of the inner pressure block 256. The welding plate 43 is arranged on the first fixing plate 221 and the second fixing plate 231. The workpiece 4 is positioned by the first positioning column 224 and the second positioning column 234. The driving cylinder 31 drives the inner movable clamping mechanism 25 through the driving connecting rod 32 to clamp the workpiece 4.

[0049] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A main valve frame welding clamping tool, characterized in that: include: A fixing frame (1), a clamping device (2), wherein the clamping device (2) comprises an end stopper (21), a first support member (22), a second support member (23), an outer fixed clamping mechanism (24) and an inner movable clamping mechanism (25); the clamping device (2) is arranged above the fixing frame (1); the end stopper (21) and the second support member (23) are arranged on the short sides at both ends of the fixing frame (1); the first support member (22) is arranged between the end stopper (21) and the second support member (23); the outer fixed clamping mechanism (24) and the inner movable clamping mechanism (25) are arranged on the fixing frame (1) and on both sides of the first support member (22); A driving mechanism (3), wherein the driving mechanism (3) is arranged above the fixing frame (1), and an output end of the driving mechanism (3) is connected to an inner movable clamping mechanism (25).

2. A main valve frame welding clamping tool according to claim 1, characterized in that: The fixing frame (1) comprises a base (11), a driving connection frame (12) and a reinforcing plate (13); The driving connection frame (12) is arranged on the base (11), and the outer side of the driving connection frame (12) is connected to the base (11) via a group of reinforcing plates (13).

3. A main valve frame welding clamping tool according to claim 2, characterized in that: The driving connection frame (12) comprises a driving support frame (121), a cylinder connection plate (122), a connecting rod fixing plate (123), a limiting block (124) and a limiting fixing block (125); The cylinder connection plate (122) is vertically connected to one end of the driving support frame (121); the connecting rod fixing plate (123) is arranged above the driving support frame (121) and vertically arranged on one side of the cylinder connection plate (122); the limiting block (124) is arranged on the connecting rod fixing plate (123), and the limiting block (124) is connected to the middle part of the upper top of the connecting rod fixing plate (123) through the limiting fixing block (125).

4. A main valve frame welding clamping tool according to claim 2, characterized in that: The end stopper (21) comprises an end clamping plate (211), an end cylinder (212), a group of end support frames (213), an end support plate (214) and an end pressing block (215); The end support frames (213) are arranged opposite to each other and are connected via an end support plate (214); the end clamping plate (211) is arranged on one side of the end support frame (213); the end cylinder (212) is mounted on the end clamping plate (211); the end pressure block (215) is arranged on a side of the end clamping plate (211) away from the end cylinder (212) and is connected to an output end of the end cylinder (212).

5. The main valve frame welding clamping tool according to claim 2, characterized in that: The first support member (22) comprises a first fixing plate (221), a group of first longitudinal support plates (222), a first transverse support plate (223) and a first positioning column (224); The first longitudinal support plate (222) is arranged relative to the front part of the base (11); the first fixing plate (221) is arranged on the top of the two first longitudinal support plates (222); the first positioning column (224) is arranged on the first fixing plate (221); and the first transverse support plate (223) is arranged between the two first longitudinal support plates (222).

6. A main valve frame welding clamping tool according to claim 2, characterized in that: The second support member (23) comprises a second fixing plate (231), a group of second longitudinal support plates (232), a second transverse support plate (233) and a second positioning column (234); The second longitudinal support plate (232) is relatively arranged on the base (11); the second fixing plate (231) is arranged above the two second longitudinal support plates (232); the second positioning column (234) is arranged on the second fixing plate (231); and the second transverse support plate (233) is vertically arranged between the two second longitudinal support plates (232).

7. A main valve frame welding clamping tool according to claim 2, characterized in that: The outer fixing clamping mechanism (24) comprises an outer fixing plate (241), a group of outer supporting frames (242), an outer transverse supporting plate (243), a group of outer cylinders (244), a group of outer pressing blocks (245) and an outer fixing block (246); The outer support frame (242) is arranged opposite to each other in the upper and lower parts, and the two are connected by an outer transverse support plate (243); the outer fixing plate (241) is arranged on one side of the outer support frame (242) and is fixedly connected thereto, and the connection between the outer fixing plate (241) and the outer support frame (242) is reinforced by a plurality of outer fixing blocks (246); the outer cylinder (244) is installed at both ends of the outer fixing plate (241); the outer pressure block (245) is respectively arranged at both ends of a side of the outer fixing plate (241) away from the outer cylinder (244), and is connected to the output end of the outer cylinder (244).

8. The main valve frame welding clamping tool according to claim 3 is characterized by: The inner movable clamping mechanism (25) comprises an inner fixing plate (251), a group of inner supporting frames (252), an inner transverse supporting plate (253), an inner transverse connecting plate (254), a group of inner cylinders (255), an inner pressure block (256) and an inner fixing block (257); The inner support frames (252) are arranged opposite to each other, and the two are connected via an inner transverse support plate (253) and an inner transverse connecting plate (254); the inner fixing plate (251) is arranged at one side of the inner support frame (252) and is fixedly connected thereto, and the connection between the inner fixing plate (251) and the inner support frame (252) is connected and reinforced via an inner fixing block (257); the inner cylinder (255) is mounted on the inner fixing plate (251); the inner pressure blocks (256) are respectively arranged at two ends of the inner fixing plate (251) on a side away from the inner cylinder (255), and are connected to the output end of the inner cylinder (255).

9. A main valve frame welding clamping tool according to claim 3, characterized in that: The driving mechanism (3) comprises a driving cylinder (31), a driving connecting rod (32), a group of guide rods (33), a T-shaped fixing block (34) and a sliding block (35); The driving cylinder (31) is arranged on the cylinder connecting plate (122), and the output end is connected to the driving connecting rod (32); the other end of the driving connecting rod (32) is connected to the inner movable clamping mechanism (25); there are two guide rods (33), which are arranged above the connecting rod fixing plate (123), one end of which is connected to the cylinder connecting plate (122), and the other end of which is connected to the connecting rod fixing plate (123) via a T-shaped fixing block (34); the sliding block (35) is arranged on the guide rod (33), and the two are slidably connected.