Brake iron shoe rotary welding device

Abstract

The utility model discloses a brake iron shoe rotary welding device which comprises a workbench, a protective cover is fixed to the upper surface of the workbench, a motor and a second air cylinder are installed on the left side and the right side of the protective cover respectively, a supporting plate is fixed to the rear end of the upper surface of the workbench, and a welding head and a first air cylinder are arranged on the front face of the supporting plate. And a rotating rod is connected to a left side bearing in the protective cover. According to the rotary welding device for the brake iron shoes, the clamping disc can be driven by the four movable sleeves to move towards the movable disc only by rotating the driving gear ring, so that the brake iron shoes of different sizes can be clamped and fixed, the situation that the welding effect is affected due to deviation of the brake iron shoe sleeves in the welding process is avoided, operation is more convenient, and the welding efficiency is improved. And meanwhile, the brake iron shoe sleeve can be elastically clamped and fixed by utilizing the elasticity of the rubber pad and the buffer spring, so that indentation or deformation of the brake iron shoe sleeve caused by overlarge clamping force is avoided.

Description

Technical Field

[0001] This utility model relates to the field of brake shoe welding technology, specifically a brake shoe rotary welding device. Background Technology

[0002] Brake shoe welding equipment is a specialized welding device used in the production process of brake shoes (also known as brake pads) – a key component of automotive braking systems. It is primarily used to weld and connect the various components of the brake shoe to form a complete and reliable braking structure. However, it has drawbacks: during production, the reinforcing ribs and the panel need to be spot-welded, and the spacing between the two rows of weld points varies depending on the specific size and location. Existing welding devices have an upper and lower structure, with the reinforcing ribs and panel fixed by tooling on the base. Different tooling is required to accommodate different sizes of brake shoes, resulting in poor applicability. To address these shortcomings, existing technology (Chinese patent application number: 201821696756.4, authorized on 2019-05-21) discloses a rotating welding device for brake shoes. This device is reliably fixed and achieves welding at different positions and spacings through the rotation of the rotating shaft and the left-right movement of the welding torch. Simultaneously, the clamping and rotating mechanism, adjusted by the panel adjustment screws and panel bracket adjustment screws, can be adapted to workpieces of different sizes, improving the equipment's applicability.

[0003] Existing technology uses panel adjustment screws and panel bracket adjustment screws to fix workpieces of different sizes. However, each time a welded workpiece is removed, multiple screws need to be loosened in sequence to release the workpiece from its fixation, which is time-consuming, labor-intensive, and inconvenient to use. At the same time, rigid clamping will cause stress concentration on the workpiece surface, resulting in indentation and deformation of the workpiece. Therefore, we have proposed a brake shoe rotary welding device that can effectively solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a rotating welding device for brake shoes, to solve the problems mentioned in the background art, which require tools to loosen multiple screws sequentially to release the workpiece from its fixation each time it is removed after welding. This results in time-consuming and laborious operation, which is inconvenient to use. Furthermore, rigid clamping causes stress concentration on the workpiece surface, leading to indentations and deformation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a brake shoe rotary welding device, comprising a worktable, a protective cover fixed to the upper surface of the worktable, and a motor and a second cylinder respectively installed on the left and right sides of the protective cover; a support plate fixed to the rear end of the upper surface of the worktable, and a welding head and a first cylinder respectively provided on the front side of the support plate; further comprising: a rotating rod connected to the left bearing inside the protective cover, and a fixed plate sleeved and fixed to the outside of the rotating rod; a driving gear ring sleeved to the outside of the fixed plate; a clamping plate connected to the right side of the fixed plate; a rubber pad provided on the side of the clamping plate; a buffer spring fixed at an equal angle between the opposing surfaces of the clamping plate and the fixed plate; and a movable plate bolted to the output end of the second cylinder.

[0006] Preferably, the welding head is slidably connected to the front of the support plate via a slider, the output end of the first cylinder is fixedly connected to the top of the slider, the left end of the rotating rod passes through the outside of the protective cover, and the left end of the rotating rod is fixedly connected to the output end of the motor.

[0007] Preferably, the fixed disk has a threaded rod rotatably connected at equal angles inside, and a driven gear is fixedly sleeved on the outer side of the left end of the threaded rod, and a movable sleeve is sleeved on the outer side of the right end of the threaded rod. The left side of the clamping disk is fixedly connected to the right side of the four movable sleeves.

[0008] Preferably, the drive gear ring is rotatably connected to the fixed disk, and the inner side of the drive gear ring is meshed with the four driven gears. The movable sleeve is threadedly connected to the threaded rod, and the outer side of the movable sleeve is slidably connected to the inner wall of the fixed disk.

[0009] Preferably, the drive gear ring has a limit hole at an equal angle on its outer side, a bracket is fixed on the right side of the top of the fixed plate, and a limit rod is slidably connected through the inside of the bracket. A return spring is installed between the outer side of the limit rod and the inner wall of the bracket, and the limit rod and the limit hole are connected by an insertion.

[0010] Preferably, a horizontal tube is fixed to the front end of the upper surface of the workbench, and air outlets are provided at equal intervals on the back of the horizontal tube. A pressing plate is fixed to the bottom of the output end of the second cylinder. An air bag is provided on the right side of the upper surface of the workbench, and the air bag is connected to the horizontal tube through an air supply pipe.

[0011] Preferably, the airbag is provided with an air inhalation tube at its rear end, and both the air inhalation tube and the air delivery tube are equipped with one-way valves.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the brake shoe rotary welding device adopts a novel structural design, the specific details of which are as follows:

[0013] (1) The brake shoe is placed on the outside of the rotating rod, and the movable plate is moved towards one end of the rotating rod by the second cylinder to limit the brake shoe. Then, the four driven gears are rotated simultaneously by rotating the drive gear ring, which in turn drives the four threaded rods to rotate simultaneously. This causes the four movable sleeves to move the clamping plate towards the movable plate, and the movable plate can clamp and fix brake shoes of different sizes, thereby avoiding the brake shoe from shifting during welding and affecting the welding effect. Furthermore, when the drive gear ring is rotated in the opposite direction, the four movable sleeves drive the clamping plate to reset and no longer fix the welded brake shoe. The movable plate is reset by the second cylinder, which makes it easy to remove the welded brake shoe.

[0014] (2) The elastic force of the rubber pad and the buffer spring can be used to elastically clamp and fix the brake shoe, thereby avoiding excessive clamping force, which may cause the brake shoe to have indentations or deformation. Then the motor drives the fixed plate to rotate through the rotating rod, and drives the clamped brake shoe to rotate, thereby achieving rotational welding. This makes the welding points more evenly distributed and the welding quality more stable, effectively reducing welding defects and improving the product qualification rate.

[0015] (3) By pulling up the limiting rod, the limiting rod is separated from the limiting hole at the initial position, and the limiting of the drive gear ring is released. Then, when the drive gear ring is rotated, the limiting rod is released so that it is reset under the elastic force of the return spring and inserted into the corresponding limiting hole. This can limit the rotation of the drive gear ring and prevent it from deflecting during the welding process, thus affecting the stability of the fixation.

[0016] (4) When the second cylinder drives the movable plate to reset, it can drive the extrusion plate to move and extrude the air bag, so that the air bag is compressed and releases gas. At the same time, the gas enters the horizontal pipe through the air supply pipe and is blown evenly to the welding position of the brake shoe from multiple air outlets, thereby shortening the cooling time of the brake shoe and improving the working efficiency. Furthermore, when the extrusion plate stops extruding the air bag, the air bag returns to its original state by itself and automatically replenishes the gas using the air intake pipe. At the same time, the one-way valve can prevent the gas from flowing turbulently. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure of the rotating rod fixing disc of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the rubber pad and the clamping disc of this utility model;

[0020] Figure 4This is a schematic diagram of the meshing structure of the drive gear ring and four driven gears of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the horizontal tube, air supply tube, and airbag of this utility model;

[0022] Figure 6 This is a schematic diagram of the connection structure between the protective cover and the workbench of this utility model;

[0023] Figure 7 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0024] In the diagram: 1. Workbench; 2. Protective cover; 3. Support plate; 4. Welding head; 5. First cylinder; 6. Rotating rod; 7. Second cylinder; 8. Air supply pipe; 9. Horizontal pipe; 10. Airbag; 11. Suction pipe; 12. Fixed plate; 13. Clamping plate; 14. Drive gear ring; 15. Rubber pad; 16. Driven gear; 17. Threaded rod; 18. Movable sleeve; 19. Limiting hole; 20. Bracket; 21. Limiting rod; 22. Movable plate. 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. 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.

[0026] Please see Figures 1-7 The present invention provides the following technical solution: a brake shoe rotary welding device;

[0027] Example 1: To address the problem in the prior art that requires loosening multiple screws sequentially to release the workpiece from its fixation each time it is removed after welding, resulting in time-consuming, labor-intensive, and inconvenient operation, and that rigid clamping causes stress concentration on the workpiece surface, leading to indentations and deformation, the following solution is disclosed. Please refer to the following for details. Figures 1-4 and Figure 6 and Figure 7As shown, the system includes a workbench 1, with a protective cover 2 fixed to its upper surface. A motor and a second cylinder 7 are respectively installed on the left and right sides of the protective cover 2. A support plate 3 is fixed to the rear end of the upper surface of the workbench 1, and a welding head 4 and a first cylinder 5 are respectively provided on the front side of the support plate 3. The system also includes: a drive gear ring 14 sleeved on the outer side of a fixed disk 12; a clamping disk 13 connected to the right side of the fixed disk 12; a threaded rod 17 rotatably connected at equal angles inside the fixed disk 12; a driven gear 16 fixedly sleeved on the outer side of the left end of the threaded rod 17; and a movable sleeve 18 sleeved on the outer side of the right end of the threaded rod 17. The left side of the clamping disk 13 is fixedly connected to the right side of the four movable sleeves 18, while the drive gear ring 14 is rotatably connected to the fixed disk 12. Furthermore, the inner side of the drive gear ring 14 is meshed with the four driven gears 16, the movable sleeve 18 is threaded with the threaded rod 17, and the outer side of the movable sleeve 18 is slidably connected to the inner wall of the fixed plate 12. The side of the clamping plate 13 is provided with a rubber pad 15, and a buffer spring is fixed at equal angles between the opposing surfaces of the clamping plate 13 and the fixed plate 12. The output end of the second cylinder 7 is bolted to the movable plate 22. Limiting holes 19 are opened at equal angles on the outer side of the drive gear ring 14. A bracket 20 is fixed on the right side of the top of the fixed plate 12, and a limiting rod 21 is slidably connected through the inside of the bracket 20. A return spring is installed between the outer side of the limiting rod 21 and the inner wall of the bracket 20, and the limiting rod 21 and the limiting hole 19 are plugged into each other.

[0028] In use, the operator opens the upper panel of the protective cover 2 and places the brake shoe on the outside of the rotating rod 6. The second cylinder 7 drives the movable disc 22 towards one end of the rotating rod 6, limiting the brake shoe. Then, the operator manually pulls the limiting rod 21 upwards, separating it from the initial limiting hole 19, releasing the limitation on the drive gear ring 14. The operator then manually rotates the drive gear ring 14, causing the four driven gears 16 to rotate simultaneously, which in turn drives the four threaded rods 17 to rotate. This causes the four movable sleeves 18 to move the clamping disc 13 towards the movable disc 22, clamping and fixing brake shoe sleeves of different sizes. This prevents the brake shoe sleeve from shifting during welding, which would affect the welding effect and makes operation more convenient. Finally, the operator releases the limiting rod 21, allowing it to reset. The spring returns to its original position under its elastic force and inserts into the corresponding limiting hole 19, which can limit the rotation of the drive gear ring 14 and prevent it from deflecting during the welding process, thus affecting the stability of the fixation. The elastic force of the rubber pad 15 and the buffer spring itself can elastically clamp and fix the brake shoe sleeve, thereby avoiding excessive clamping force, which would cause the brake shoe sleeve to have indentations or deformation. Then, the first cylinder 5 drives the welding head 4 to move downward and weld the weld seam of the brake shoe sleeve. After the brake shoe sleeve is welded and needs to be removed, the worker pulls the limiting rod 21 upward again and drives the drive gear ring 14 to rotate in the opposite direction, so that the four movable sleeves 18 drive the clamping plate 13 to reset and no longer fix the welded brake shoe sleeve. The second cylinder 7 drives the movable plate 22 to reset, thus facilitating the removal of the welded brake shoe sleeve.

[0029] Example 2: Unlike Example 1, this example allows for rotation of the brake shoe bushing, enabling rotary welding. This results in a more uniform distribution of weld points and more stable weld quality. See details... Figures 1-3 and Figure 6 As shown, a rotating rod 6 is connected to the left bearing inside the protective cover 2, and a fixed plate 12 is sleeved and fixed on the outside of the rotating rod 6. The welding head 4 is slidably connected to the front of the support plate 3 through a slider. The output end of the first cylinder 5 is fixedly connected to the top of the slider. The left end of the rotating rod 6 passes through the outside of the protective cover 2, and the left end of the rotating rod 6 is fixedly connected to the output end of the motor.

[0030] When the brake shoe is clamped and fixed, the motor drives the fixed plate 12 to rotate through the rotating rod 6, and drives the clamped brake shoe sleeve to rotate, realizing rotational welding, and causing the welding head 4 to move along the weld seam trajectory to form a continuous weld seam, thereby making the welding points more evenly distributed, the welding quality more stable, effectively reducing welding defects, and improving the product qualification rate.

[0031] Example 3: Unlike Example 2, this example utilizes the gas generated by the compression of the airbag 10 to blow towards the welding position of the brake shoe bushing, thereby shortening the cooling time of the brake shoe bushing and improving work efficiency. See details for further information. Figure 1 , Figure 2 and Figure 5 As shown, a horizontal tube 9 is fixed to the front end of the upper surface of the workbench 1, and air outlets are opened at equal intervals on the back of the horizontal tube 9. A squeezing plate is fixed to the bottom of the output end of the second cylinder 7. An air bag 10 is provided on the right side of the upper surface of the workbench 1, and the air bag 10 is connected to the horizontal tube 9 through an air supply pipe 8. An air intake pipe 11 is provided at the rear end of the air bag 10, and a one-way valve is installed inside both the air intake pipe 11 and the air supply pipe 8.

[0032] When the second cylinder 7 drives the movable disc 22 to reset, it can drive the extrusion plate to move and extrude the airbag 10, causing the airbag 10 to release gas under pressure. At the same time, the gas enters the horizontal pipe 9 through the air supply pipe 8 and is evenly blown from multiple air outlets to the welding position of the brake shoe, thereby shortening the cooling time of the brake shoe and improving work efficiency. Then, when the extrusion plate stops extruding the airbag 10, the airbag 10 returns to its original state and automatically replenishes gas through the air intake pipe 11. At the same time, the one-way valve can prevent the gas from flowing turbulently.

[0033] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A brake shoe rotary welding device, comprising a workbench (1), wherein a protective cover (2) is fixed on the upper surface of the workbench (1), and a motor and a second cylinder (7) are respectively installed on the left and right sides of the protective cover (2), and a support plate (3) is fixed on the rear end of the upper surface of the workbench (1), and a welding head (4) and a first cylinder (5) are respectively provided on the front side of the support plate (3); characterized in that, Also includes: The left bearing inside the protective cover (2) is connected to a rotating rod (6), and a fixed plate (12) is sleeved and fixed on the outside of the rotating rod (6). A drive gear ring (14) is sleeved on the outside of the fixed plate (12), and a clamping plate (13) is connected to the right side of the fixed plate (12). A rubber pad (15) is provided on the side of the clamping plate (13). A buffer spring is fixed at an equal angle between the opposite surfaces of the clamping plate (13) and the fixed plate (12). The output end of the second cylinder (7) is bolted to a movable plate (22).

2. The brake shoe rotary welding device according to claim 1, characterized in that: The welding head (4) is slidably connected to the front of the support plate (3) via a slider. The output end of the first cylinder (5) is fixedly connected to the top of the slider. The left end of the rotating rod (6) passes through the outside of the protective cover (2) and is fixedly connected to the output end of the motor.

3. The brake shoe rotary welding device according to claim 1, characterized in that: The fixed disk (12) is rotatably connected to a threaded rod (17) at equal angles inside, and a driven gear (16) is fixedly sleeved on the outer side of the left end of the threaded rod (17), and a movable sleeve (18) is sleeved on the outer side of the right end of the threaded rod (17). The left side of the clamping disk (13) is fixedly connected to the right side of the four movable sleeves (18).

4. The brake shoe rotary welding device according to claim 3, characterized in that: The drive gear ring (14) is rotatably connected to the fixed disk (12), and the inner side of the drive gear ring (14) is meshed with the four driven gears (16). The movable sleeve (18) is threadedly connected to the threaded rod (17), and the outer side of the movable sleeve (18) is slidably connected to the inner wall of the fixed disk (12).

5. The brake shoe rotary welding device according to claim 1, characterized in that: The drive gear ring (14) has a limit hole (19) at an equal angle on its outer side. A bracket (20) is fixed on the right side of the top of the fixed plate (12). A limit rod (21) is slidably connected through the inside of the bracket (20). A return spring is installed between the outer side of the limit rod (21) and the inner wall of the bracket (20). The limit rod (21) and the limit hole (19) are connected by an insertion.

6. The brake shoe rotary welding device according to claim 1, characterized in that: A horizontal tube (9) is fixed at the front end of the upper surface of the workbench (1), and air outlets are provided at equal intervals on the back of the horizontal tube (9). A pressing plate is fixed at the bottom of the output end of the second cylinder (7). An air bag (10) is provided on the right side of the upper surface of the workbench (1), and the air bag (10) and the horizontal tube (9) are connected by an air supply pipe (8).

7. The brake shoe rotary welding device according to claim 6, characterized in that: The airbag (10) is provided with an air inhalation tube (11) at its rear end, and both the air inhalation tube (11) and the air delivery tube (8) are equipped with one-way valves.

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