Workpiece positioning and clamping device for automatic welding production line

Abstract

The utility model discloses a workpiece positioning and clamping device for an automatic welding production line, which belongs to the technical field of workpiece positioning and comprises a workbench, two sliding grooves are symmetrically formed in the middle of the upper surface of the workbench, a positioning and conveying assembly is arranged in the middle of an inner cavity of the workbench, and the positioning and conveying assembly is arranged in the middle of the inner cavity of the workbench. A clamping assembly is arranged on the lower surface of the workbench. A second motor is started to drive a two-way screw rod to rotate, so that two clamping arms stably move inwards at the same time till two clamping blocks I push two workpieces together and tightly clamp the side faces of the two workpieces, then a third motor is started to drive the screw rod to rotate, and the two workpieces are clamped tightly. The two second clamping blocks move inwards at the same time and tightly clamp the other two sides of the two workpieces, multi-direction clamping force is formed, the stability of the workpieces is improved, and the deformation risk caused by single-direction clamping is reduced.

Description

Technical Field

[0001] This utility model relates to the field of workpiece positioning technology, and more specifically, to a workpiece positioning and clamping device for an automated welding production line. Background Technology

[0002] An automated welding production line is a highly integrated manufacturing system designed to improve the efficiency, consistency, and quality of the welding process through automation technology. Such a line typically includes multiple subsystems and components, such as workpiece positioning and clamping devices, welding robots, welding power sources, and weld seam tracking systems. In an automated welding production line, workpiece positioning and clamping are key steps to ensure efficient and high-quality welding. Precise positioning and stable clamping not only improve production efficiency but also guarantee the consistency and reliability of weld quality.

[0003] Chinese Patent Publication No. CN212793764U discloses a positioning and clamping device for workpieces at an automatic welding station on a steel mold platform. The device includes a steel frame beam, a track I, and a square tube. The cylinder fixing seat is installed at the bottom of the welding platform and is fixedly connected to it. This utility model's positioning and clamping device for workpieces at an automatic welding station on a steel mold platform has the following characteristics: First, it achieves automatic positioning of the steel frame in two directions; second, it fully utilizes the internal space of the welding platform, hiding the cylinder body and other components within the platform to avoid damage from collisions with other objects, while saving external space for easier operation; third, all transmission components, such as the ear plate and the three-hole rocker arm, are arranged on one side of the welding platform, resulting in a reasonable layout, easy adjustment, and more reliable transmission.

[0004] In practical applications, existing technologies can cause workpieces to deform due to heat and vibration during welding. When a workpiece is clamped in only one direction, it is prone to move in other degrees of freedom, thus deviating from its intended position. Furthermore, unidirectional clamping can cause uneven stress distribution inside the rocket, leading to workpiece deformation during welding or after cooling. Therefore, an automated welding production line workpiece positioning and clamping device is proposed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides an automated welding production line workpiece positioning and clamping device. It starts a second motor that drives a bidirectional screw to rotate, causing two clamping arms to move smoothly inwards simultaneously until two clamping blocks push the two workpieces together and tightly clamp their sides. Then, a third motor drives the screw to rotate, causing two clamping blocks to move inwards simultaneously and tightly clamp the other two sides of the two workpieces, forming a multi-directional clamping force. This not only increases the stability of the workpieces but also reduces the risk of deformation caused by unidirectional clamping. By adjusting the positions of the clamping arms and clamping blocks, the system can adapt to workpieces of different sizes, exhibiting high flexibility and versatility.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] An automated welding production line workpiece positioning and clamping device includes a worktable with two symmetrically arranged grooves on the upper surface of the worktable. A positioning conveying assembly is arranged in the middle of the inner cavity of the worktable, and a clamping assembly is arranged on the lower surface of the worktable. The positioning conveying assembly includes two conveying rollers rotatably connected to the inner cavity of the worktable via shafts. Multiple conveyor belts are uniformly fixedly connected to the outer surface of the conveying rollers. A bracket is fixedly connected to one side of the worktable, and a motor is fixedly connected to one side of the bracket. A support plate is fixedly connected to the inner cavity of the worktable. The clamping assembly includes a U-shaped frame fixedly connected to the middle of the lower surface of the worktable. A bidirectional screw is rotatably connected to the inner cavity of the U-shaped frame. Two clamping arms are symmetrically threaded to the outer surface of the bidirectional screw. A motor is fixedly connected to one side of the U-shaped frame. A clamping block is fixedly connected to one end of each clamping arm. A screw is rotatably connected to the inner cavity of the clamping block. A clamping block is threaded to the outer surface of the screw. A motor is fixedly connected to one side of the clamping block.

[0010] Furthermore, four support legs are fixedly connected to the lower surface of the workbench, and the slide and the loop frame are located on the same horizontal line.

[0011] Furthermore, the conveying roller is fixedly connected to the output shaft end of the motor by passing through the worktable, and the upper surface of the support plate abuts against the inner wall of the conveyor belt.

[0012] Furthermore, the clamping arms move within the sliding groove and the inner cavity of the loop frame, respectively, and one end of the bidirectional screw passes through the loop frame and is fixedly connected to the output shaft end of the second motor.

[0013] Furthermore, one end of the screw passes through the clamping block one and is fixedly connected to the output shaft end of the motor three, and rubber pads are fixedly connected to one side of both the clamping block one and the clamping block two.

[0014] Furthermore, the clamping arm is L-shaped, and there are two clamping blocks arranged alternately.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] (1) This solution starts the second motor to drive the bidirectional screw to rotate, so that the two clamping arms move inward smoothly at the same time until the two clamping blocks push the two workpieces together and tightly clamp the sides of the two workpieces. Then, the third motor drives the screw to rotate, so that the two clamping blocks move inward at the same time and tightly clamp the other two sides of the two workpieces, forming a multi-directional clamping force. This not only increases the stability of the workpieces, but also reduces the risk of deformation caused by unidirectional clamping. By adjusting the position of the clamping arms and clamping blocks, the system can adapt to workpieces of different sizes and has high flexibility and versatility.

[0018] (2) This solution places two workpieces that need to be welded on a conveyor belt and separates multiple workpieces to be welded by a separator belt. This ensures that the workpieces to be welded stop accurately at the predetermined position and are not confused with other workpieces. Then, the motor is started to drive the conveyor roller to rotate, so that the workpiece moves along the set path to the designated position and stops. The automated conveying reduces the dependence on manual operation and improves the level of automation in production. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model viewed from below;

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 This is a partial structural diagram of the present invention.

[0023] Explanation of the labels in the diagram:

[0024] 1. Workbench; 101. Support leg; 102. Slide chute; 2. Positioning and conveying assembly; 201. Conveyor roller; 202. Conveyor belt; 203. Separator belt; 204. Motor 1; 205. Bracket; 206. Support plate; 3. Clamping assembly; 301. U-shaped frame; 302. Bidirectional screw; 303. Motor 2; 304. Clamping arm; 305. Clamping block 1; 306. Screw; 307. Clamping block 2; 308. Motor 3; 309. Rubber pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1

[0029] Reference Figure 1 , Figure 2 and Figure 4 This is the first embodiment of the present invention. This embodiment provides a workpiece positioning and clamping device for an automated welding production line, including a workbench 1. Two sliding grooves 102 are symmetrically opened in the middle of the upper surface of the workbench 1. A positioning and conveying assembly 2 is provided in the middle of the inner cavity of the workbench 1, including two conveying rollers 201 rotatably connected to the inner cavity of the workbench 1 by a shaft. Multiple conveyor belts 202 are uniformly fixedly connected to the outer surface of the conveying rollers 201. A bracket 205 is fixedly connected to one side of the workbench 1. A motor 204 is fixedly connected to one side of the bracket 205. A support plate 206 is fixedly connected to the inner cavity of the workbench 1.

[0030] Specifically, four support legs 101 are fixedly connected to the lower surface of the workbench 1. The conveyor roller 201 is fixedly connected to the output shaft end of the motor 204 through the shaft passing through the workbench 1. The upper surface of the support plate 206 abuts against the inner wall of the conveyor belt 202.

[0031] Furthermore, the workbench 1 is stably supported by support legs 101 to ensure that it will not shake or tilt during operation. The chute 102 is used to guide the movement of other components. In use, two workpieces that need to be welded are placed on the conveyor belt 202, and multiple workpieces to be processed are separated by the separator belt 203. The separator belt 203 is used to separate the workpieces to prevent them from getting mixed up and to include the workpieces within a preset range for precise operation. Then, the motor 204 is started to drive the conveyor roller 201 to rotate, so that the workpiece moves along the set path to the designated position and stops. The support plate 203 is installed in the workbench 1 to support the weight of the workpieces on the conveyor belt 202 and ensure the stability of the overall structure.

[0032] Example 2

[0033] Reference Figure 1 , Figure 2 and Figure 3 This is the second embodiment of the present invention. Based on the previous embodiment, a clamping assembly 3 is provided on the lower surface of the workbench 1. The assembly includes a U-shaped frame 301 fixedly connected to the middle of the lower surface of the workbench 1. A bidirectional screw 302 is rotatably connected to the inner cavity of the U-shaped frame 301. Two clamping arms 304 are symmetrically threaded on the outer surface of the bidirectional screw 302. A second motor 303 is fixedly connected to one side of the U-shaped frame 301. A first clamping block 305 is fixedly connected to one end of the clamping arm 304. A screw 306 is rotatably connected to the inner cavity of the first clamping block 305. A second clamping block 307 is threaded on the outer surface of the screw 306. A third motor 308 is fixedly connected to one side of the first clamping block 305.

[0034] Specifically, the slide 102 and the loop frame 301 are located on the same horizontal line. The clamping arm 304 moves in the inner cavity of the slide 102 and the loop frame 301 respectively. One end of the bidirectional screw 302 passes through the loop frame 301 and is fixedly connected to the output shaft end of the second motor 303. One end of the screw 306 passes through the clamping block 305 and is fixedly connected to the output shaft end of the third motor 308. Rubber pads 309 are fixedly connected to one side of the clamping block 305 and the clamping block 307. The clamping arm 304 is L-shaped, and there are two clamping blocks 307 arranged alternately.

[0035] Furthermore, starting motor 303 drives the bidirectional screw 302 to rotate, causing the two clamping arms 304 to move smoothly inward simultaneously within the loop frame 301 and the slide groove 102 until the two clamping blocks 305 push the two workpieces together and tightly clamp the sides of the two workpieces. Then, starting motor 308 drives the screw 306 to rotate, causing the two clamping blocks 307 to move inward simultaneously and tightly clamp the other two sides of the two workpieces, forming a multi-directional clamping force. This not only increases the stability of the workpieces but also reduces the impact of single-axis clamping. The risk of deformation caused by directional clamping is mitigated, and rubber pads 309 are used to protect the workpiece surface from scratches or damage, while also increasing friction to improve the clamping effect. After clamping, subsequent processing operations such as welding can be performed. After processing is completed, motors 2 (303) and 3 (308) are reversed to move clamping blocks 1 (305) and 2 (307) outward, releasing the workpiece. Then, the next cycle continues. The welded workpiece moves along the conveyor belt 202 and falls into the designated storage box, improving production efficiency and product quality.

[0036] Working principle: During operation, the workbench 1 is stably supported by support legs 101 to ensure that it does not shake or tilt during operation. Two workpieces to be welded are placed on the conveyor belt 202, and multiple workpieces are separated by the separator belt 203. Then, motor 1 204 is started to drive the conveyor roller 201 to rotate, moving the workpieces along the set path to the designated position and stopping. When the workpiece reaches the predetermined position, motor 2 303 is started to drive the bidirectional screw 302 to rotate, causing the two clamping arms 304 to clamp between the loop frame 301 and the slide 102. The internal components move smoothly inwards until the two clamping blocks 305 push the two workpieces together and tightly clamp their sides. Then, the motor 308 is started to drive the screw 306 to rotate, causing the two clamping blocks 307 to move inwards simultaneously and tightly clamp the other two sides of the two workpieces. The rubber pads 309 provide protection and anti-slip function. After clamping, subsequent processing operations such as welding can be performed. After processing is completed, the motors 303 and 308 are reversed to move the clamping blocks 305 and 307 outwards, releasing the workpieces, and then the next cycle continues.

[0037] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A workpiece positioning and clamping device for an automated welding production line, comprising a worktable (1), characterized in that: The workbench (1) has two symmetrically arranged sliding grooves (102) in the middle of the upper surface, a positioning and conveying assembly (2) is provided in the middle of the inner cavity of the workbench (1), and a clamping assembly (3) is provided on the lower surface of the workbench (1). The positioning and conveying assembly (2) includes two conveying rollers (201) rotatably connected to the inner cavity of the worktable (1) via a shaft. Multiple conveyor belts (202) are uniformly fixedly connected to the outer surface of the conveying rollers (201). A bracket (205) is fixedly connected to one side of the worktable (1). A motor (204) is fixedly connected to one side of the bracket (205). A support plate (206) is fixedly connected to the inner cavity of the worktable (1). The clamping assembly (3) includes a U-shaped frame (301) fixedly connected to the middle of the lower surface of the workbench (1). A bidirectional screw (302) is rotatably connected to the inner cavity of the U-shaped frame (301). Two clamping arms (304) are symmetrically threaded on the outer surface of the bidirectional screw (302). A second motor (303) is fixedly connected to one side of the U-shaped frame (301). A first clamping block (305) is fixedly connected to one end of the clamping arm (304). A screw (306) is rotatably connected to the inner cavity of the first clamping block (305). A second clamping block (307) is threaded on the outer surface of the screw (306). A third motor (308) is fixedly connected to one side of the first clamping block (305).

2. The workpiece positioning and clamping device for an automated welding production line according to claim 1, characterized in that: The workbench (1) has four support legs (101) fixedly connected to its lower surface, and the slide (102) and the loop frame (301) are located on the same horizontal line.

3. The workpiece positioning and clamping device for an automated welding production line according to claim 1, characterized in that: The conveying roller (201) is fixedly connected to the output shaft end of the motor (204) through the shaft through the worktable (1), and the upper surface of the support plate (206) abuts against the inner wall of the conveyor belt (202).

4. The workpiece positioning and clamping device for an automated welding production line according to claim 1, characterized in that: The clamping arm (304) moves in the inner cavity of the slide groove (102) and the loop frame (301) respectively, and one end of the bidirectional screw (302) passes through the loop frame (301) and is fixedly connected to the output shaft end of the second motor (303).

5. The workpiece positioning and clamping device for an automated welding production line according to claim 1, characterized in that: One end of the screw (306) passes through the clamping block one (305) and is fixedly connected to the output shaft end of the motor three (308). Rubber pads (309) are fixedly connected to one side of the clamping block one (305) and the clamping block two (307).

6. The workpiece positioning and clamping device for an automated welding production line according to claim 1, characterized in that: The clamping arm (304) is L-shaped, and there are two clamping blocks (307) arranged alternately.

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