A processing fixture for producing steel-plastic composite pipes

Abstract

This utility model discloses a processing fixture for producing steel-plastic composite pipes, including an operating table with two sets of mounting slots. Two sets of mounting rods are symmetrically arranged within the mounting slots, and each mounting rod has a gripper at its top. Each of the two sets of mounting rods has a hinged connecting rod at one end opposite to the mounting rod. A connecting rod is hinged to the end of the hinged connecting rod away from the mounting rod, and an arc-shaped support plate is provided at the top of the connecting rod. A limiting component is provided within the mounting slots. An arc-shaped top plate is provided above the arc-shaped support plate, and a chain is provided at the bottom of the arc-shaped top plate. A driving component is provided on the operating table to drive the two sets of arc-shaped top plates downwards. This utility model, through its innovative combination of chain and arc-shaped top plate structure, achieves flexible clamping of the steel-plastic composite pipe, dispersing concentrated stress and avoiding pipe denting or coating damage caused by single-point pressure from traditional rigid pressure plates. Furthermore, the drooping characteristics of the chain allow it to adapt to pipes of different diameters or ellipticities, making it particularly suitable for pipes with slight deformation.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing technology, specifically a processing fixture for the production of steel-plastic composite pipes. Background Technology

[0002] In utility model patent application CN214489754U, published on October 26, 2021, entitled "A Steel Pipe Processing Clamp," this utility model discloses a steel pipe processing clamp, belonging to the technical field of steel pipe processing clamping devices. The key technical feature is a steel pipe processing clamp comprising a clamping base with a clamping mechanism. Several telescopic members are rotatably connected to the lower parts of both sides of the clamping base. A sliding mechanism is provided at the bottom of each telescopic member, and the sliding mechanism is slidably connected to a slide rail on the base. The slide rail includes a positioning groove and a displacement groove. Therefore, this utility model has a simple structure, reliable design, and can ensure the stability of the device. It can also adapt to the height of various processing instruments and clamp steel pipes of various sizes, improving the applicability of the device.

[0003] In the aforementioned patents or prior art, traditional clamps press down on a single steel plate driven by bolts or cylinders, concentrating the pressure at the contact edge. This can easily cause stress concentration, resulting in scratches on the pipe surface, coating peeling, or localized deformation, affecting the product's sealing performance and strength. Utility Model Content

[0004] The purpose of this utility model is to provide a processing fixture for the production of steel-plastic composite pipes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a processing fixture for steel-plastic composite pipe production, comprising an operating table, on which two sets of mounting slots are symmetrically arranged, and in each set of mounting slots are two sets of mounting rods symmetrically arranged. The top end of each mounting rod is provided with a gripper, and the mounting rod and the inner wall of the mounting slot are slidably engaged by a sliding component. Each set of mounting rods is hinged to a hinge rod at one end opposite to the mounting rod, and the hinge rod is hinged to a connecting rod at the end away from the mounting rod, and the connecting rod is located between the two sets of mounting rods. The top end of the connecting rod is provided with an arc-shaped support plate, and a limiting component is provided in the mounting slot. An arc-shaped top plate is provided above the arc-shaped support plate to cooperate with it, and an iron chain is provided at the bottom end of the arc-shaped top plate. The operating table is provided with a driving component for driving the two sets of arc-shaped top plates to move downward.

[0006] Furthermore, the limiting component includes a mounting plate installed in the mounting groove, the mounting plate having two sets of grooves symmetrically formed, the two sets of mounting rods being movably disposed in the two sets of grooves respectively, a limiting groove being formed between the two sets of grooves, and a connecting rod being movably disposed in the limiting groove.

[0007] Furthermore, the sliding assembly includes sliders symmetrically arranged at both ends of the two sets of mounting rods, and the inner walls of the mounting groove are provided with sliding grooves that slide with the sliders.

[0008] Furthermore, the inner wall of the gripper is provided with a rubber pad.

[0009] Furthermore, a spring is provided in the mounting groove, one end of which is fixedly connected to the bottom of the inner wall of the mounting groove, and the other end is fixedly connected to the bottom of the connecting rod.

[0010] Furthermore, the drive assembly includes an electric push rod located above the operating table, the output end of which is connected to a fixed plate, and two sets of arc-shaped top plates are symmetrically located at the bottom end of the fixed plate.

[0011] Furthermore, a mounting bracket is fixedly provided on the operating table, and the electric push rod is fixedly mounted on the mounting bracket.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the processing fixture for producing steel-plastic composite pipes is reasonable and has the following advantages: This clamp achieves flexible clamping of steel-plastic composite pipes through an innovative combination structure of iron chain and arc-shaped top plate. In this design, each link of the iron chain can move independently and automatically conform to the irregular surface of the pipe during the pressing process, forming multi-point dynamic contact. The links of the iron chain will generate slight displacement when in contact, dispersing concentrated stress and avoiding pipe denting or coating damage caused by single-point pressure of traditional rigid pressure plates. In addition, the dangling characteristics of the iron chain make it adaptable to pipes of different diameters or ellipticity, especially suitable for pipes with slight deformation to be processed. Furthermore, the upper and lower cooperation of the arc-shaped support plate and the iron chain forms a wrap-around clamping, further expanding the force contact area and significantly reducing the risk of pipe deformation. The auxiliary design of the rubber pad supplements the anti-slip requirement during lateral clamping, forming a multi-protection mechanism of flexible main pressure and elastic anti-slip, comprehensively improving the safety of the clamping process. This fixture achieves synchronous and symmetrical movement of the grippers through a linkage system consisting of mounting rods, hinge rods, and connecting rods. When the electric push rod drives the arc-shaped top plate to press down, the pressure is converted into equidistant displacement of the mounting rods on both sides through the connecting rods, ensuring that the two sets of grippers always close symmetrically around the pipe axis. This design overcomes the asynchronous problem that may occur when the grippers are driven by traditional independent cylinders, and avoids pipe axis deviation caused by asymmetrical clamping forces. The cooperation between the limiting groove and the mounting plate restricts the movement trajectory of the connecting rod to the vertical direction. The spring's reset function not only simplifies the operation process but also ensures that the grippers can completely return to the initial position after each release, eliminating cumulative errors and significantly improving the changeover efficiency of the production line. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a structural schematic diagram of the cross-section of the operating table of this utility model; Figure 3 This is a schematic diagram of the mounting plate of this utility model; Figure 4 This is an enlarged structural schematic diagram of point A of this utility model; Figure 5 This is a schematic diagram of the clamping assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the arc-shaped top plate of this utility model.

[0014] In the diagram: 100, operating table; 101, mounting slot; 102, mounting plate; 103, groove; 104, limiting slot; 200, mounting rod; 201, gripper; 202, rubber pad; 203, slider; 204, slide groove; 205, connecting rod; 206, arc-shaped support plate; 207, hinge rod; 208, spring; 300, mounting bracket; 301, electric push rod; 302, fixing plate; 303, arc-shaped top plate; 304, chain. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 This utility model provides a technical solution.

[0017] Example

[0018] A processing fixture for producing steel-plastic composite pipes includes an operating table 100. Two sets of mounting slots 101 are symmetrically arranged on the operating table 100. Two sets of mounting rods 200 are symmetrically arranged within each set of mounting slots 101. Each mounting rod 200 has a gripper 201 at its top. The mounting rods 200 and the inner wall of the mounting slots 101 are slidably engaged via a sliding assembly. A hinged rod 207 is hinged to one end of each set of mounting rods 200. A connecting rod 205 is hinged to the end of each hinged rod 207 away from the mounting rods 200, and the connecting rod 205 is located between the two sets of mounting rods 200. An arc-shaped support plate 206 is provided at the top of the connecting rod 205. A limiting assembly is provided within the mounting slots 101. An arc-shaped top plate 303 is provided above the arc-shaped support plate 206 to cooperate with it. A chain 304 is provided at the bottom end of the arc-shaped top plate 303. A driving assembly is provided on the operating table 100 to drive the two sets of arc-shaped top plates 303 downwards.

[0019] The limiting component includes a mounting plate 102 installed in the mounting groove 101. Two sets of grooves 103 are symmetrically provided on the mounting plate 102. Two sets of mounting rods 200 are respectively movably disposed in the two sets of grooves 103. A limiting groove 104 is provided between the two sets of grooves 103, and a connecting rod 205 is movably disposed in the limiting groove 104.

[0020] The sliding assembly includes sliders 203 symmetrically arranged at both ends of two sets of mounting rods 200, and the inner walls of the mounting groove 101 are provided with grooves 204 that slide in cooperation with the sliders 203.

[0021] The inner wall of the gripper 201 is provided with a rubber pad 202.

[0022] A spring 208 is provided in the mounting groove 101. One end of the spring 208 is fixedly connected to the bottom end of the inner wall of the mounting groove 101, and the other end is fixedly connected to the bottom end of the connecting rod 205.

[0023] The drive assembly includes an electric push rod 301 located above the operating table 100. The output end of the electric push rod 301 is connected to a fixed plate 302, and two sets of arc-shaped top plates 303 are symmetrically located at the bottom of the fixed plate 302.

[0024] The operating table 100 is fixedly provided with a mounting bracket 300, and the electric push rod 301 is fixedly installed on the mounting bracket 300.

[0025] Working principle: In the initial state, spring 208 presses against connecting rod 205, causing the two sets of mounting rods 200 to be located at both ends of mounting groove 101, keeping the grippers 201 open. When it is necessary to clamp the pipe, the pipe is placed on the arc-shaped support plate 206, and the drive assembly starts working. The electric push rod 301 drives the two sets of arc-shaped top plates 303 to move down synchronously through the fixing plate 302. The arc-shaped top plates 303 apply downward pressure through the iron chain 304. The flexible nature of the iron chain 304 allows it to automatically conform to the surface of the pipe when in contact with it, avoiding surface scratches caused by rigid collisions. Compared with directly using metal pressure plates, each link of the iron chain 304 can move independently, which can better adapt to the irregular surface of the steel pipe, distribute the clamping force more evenly, and prevent excessive local stress from damaging the pipe. The deformation mechanism is particularly suitable for thin-walled steel-plastic composite pipes. During the downward pressure of the iron chain 304, the connecting rod 205 is forced to move downward. When the connecting rod 205 moves downward, it drives the mounting rods 200 on both sides to slide inward along the slide groove 204 through the hinge rod 207. The gripper 201 at the top of the mounting rod 200 moves inward accordingly to clamp and fix the pipe. The groove 103 on the mounting plate 102 guides the movement trajectory of the mounting rod 200, and the limiting groove 104 limits the movement range of the connecting rod 205 to ensure the accuracy of the clamping action. The rubber pad 202 on the inner wall of the gripper 201 provides anti-slip protection to avoid damage to the surface of the pipe. After processing, the electric push rod 301 retracts, and under the reset action of the spring 208, all components return to their initial positions, and the gripper 201 automatically releases, completing one work cycle.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A processing fixture for producing steel-plastic composite pipes, comprising an operating table (100), characterized in that: The operating table (100) has two sets of mounting slots (101) symmetrically arranged. Each set of mounting slots (101) has two sets of mounting rods (200) symmetrically arranged. The top of each mounting rod (200) is provided with a gripper (201). The mounting rod (200) and the inner wall of the mounting slot (101) are slidably engaged by a sliding component. Each set of mounting rods (200) has a hinge rod (207) hinged at one end opposite to the mounting rod (200). The end of the hinge rod (207) away from the mounting rod (200) is hinged. Connecting rod (205) is located between two sets of mounting rods (200). The top of the connecting rod (205) is provided with an arc-shaped support plate (206). The mounting groove (101) is provided with a limiting component. An arc-shaped top plate (303) is provided above the arc-shaped support plate (206) to cooperate with it. The bottom of the arc-shaped top plate (303) is provided with an iron chain (304). The operating table (100) is provided with a driving component to drive the two sets of arc-shaped top plates (303) to move downward.

2. The processing fixture for producing steel-plastic composite pipes according to claim 1, characterized in that: The limiting component includes a mounting plate (102) installed in the mounting groove (101). Two sets of grooves (103) are symmetrically provided on the mounting plate (102). Two sets of mounting rods (200) are respectively movably disposed in the two sets of grooves (103). A limiting groove (104) is provided between the two sets of grooves (103), and a connecting rod (205) is movably disposed in the limiting groove (104).

3. The machining clamp for steel-plastic composite pipe production according to claim 1, characterized in that: The sliding assembly includes sliders (203) symmetrically arranged at both ends of two sets of mounting rods (200), and the inner walls of the mounting groove (101) are provided with sliding grooves (204) that slide with the sliders (203).

4. The processing fixture for producing steel-plastic composite pipes according to claim 1, characterized in that: The inner wall of the gripper (201) is provided with a rubber pad (202).

5. The processing fixture for producing steel-plastic composite pipes according to claim 1, characterized in that: A spring (208) is provided in the mounting groove (101). One end of the spring (208) is fixedly connected to the bottom of the inner wall of the mounting groove (101), and the other end is fixedly connected to the bottom of the connecting rod (205).

6. The processing fixture for producing steel-plastic composite pipes according to claim 1, characterized in that: The drive assembly includes an electric push rod (301) located above the operating table (100), the output end of the electric push rod (301) is connected to a fixed plate (302), and two sets of arc-shaped top plates (303) are symmetrically located at the bottom of the fixed plate (302).

7. A processing fixture for producing steel-plastic composite pipes according to claim 6, characterized in that: The operating table (100) is fixedly provided with a mounting bracket (300), and the electric push rod (301) is fixedly installed on the mounting bracket (300).

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