Door plate integrated welding tool

Abstract

The utility model provides a door panel integrated welding frock, through setting up upper template, welding template, compression template and lower template from top to bottom in proper order, the work piece of waiting for welding is placed on the lower template, upper template is connected with welding template and compression template, installs the welding device on the welding template, the installed welding device is consistent with the car door position that needs welding, utilizes compression device to realize the fastening to work piece, and the through -hole that is matched with the welding device is set up on compression device, makes compression device to realize fastening to work piece after, the welding device can pass through the through -hole on compression device, carries out the welding to work piece, and this frock only needs to be driven under the upper template, realizes the motion once, can complete the welding to all positions that need to weld of door panel.

Description

Technical Field

[0001] This utility model relates to the field of vehicle door welding, and in particular to an integrated welding fixture for door panels. Background Technology

[0002] In the assembly of car door interior panels during automobile manufacturing, welding is an extremely important process. Door panels typically have a large number of welding points. For example, the door panels of the SV92 model have as many as 70 welding points on a single door panel. With so many welding points, the assembly process is subject to extremely high requirements.

[0003] However, traditional door panel welding methods typically use handheld welding guns. The quality of welding with handheld welding guns largely depends on the accumulated experience and skill level of the workers. Welding techniques, strength, and welding time will vary between different workers. Even for the same worker, the quality of welding can deviate due to factors such as their work status and attention. Once a deviation occurs in the welding quality, it will affect the overall quality of the welding, resulting in 70 potential risk points out of 70 welding points.

[0004] Secondly, during the welding process using handheld welding guns, after completing the welding work at one point, workers need to move to the next point. This movement and repositioning consumes a lot of time, and the frequent gun changes, parameter adjustments, and other auxiliary operations further extend the overall welding time, making the entire welding process exceptionally long and resulting in extremely low production efficiency. This not only affects the assembly time of a single door interior panel but also slows down the progress of the entire automotive production line, extending the production cycle and failing to meet the demands of large-scale, high-efficiency production.

[0005] Most importantly, manual welding with a handheld welding torch makes it difficult to accurately position and angle each weld point, especially on complex curved surfaces or in confined spaces. Positioning deviations can easily lead to unstable welding quality, and may even result in missed welds or incomplete welds. For door panels, inconsistent welding quality greatly increases the difficulty of subsequent quality inspections, raises the defect rate and production costs, and may even cause problems such as loosening and abnormal noises during later use, seriously affecting the overall quality of the car and the user experience.

[0006] Therefore, there is an urgent need in the market for a device that can effectively solve the above problems, so that the welding of door panels can effectively improve production efficiency while ensuring welding quality. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this utility model provides an integrated welding fixture for door panels. It consists of an upper template, a welding template, a clamping template, and a lower template arranged sequentially from top to bottom. The welding template and the clamping template are connected to the upper template to fix their relative positions. When the clamping device moves the upper template downwards for clamping, it simultaneously moves the welding template and the clamping template downwards at the same speed. After reaching a certain position, the clamping template clamps the workpiece. The welding device installed on the welding template can simultaneously and accurately weld all the required welding points.

[0008] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0009] An integrated welding fixture for door panels includes an upper template, a welding template, a clamping template, and a lower template. The upper template is used to connect to a clamping device. The welding template is connected to the lower part of the upper template via a first support column, and the clamping template is installed below the upper template via a second support column, with the clamping template located below the welding template. A welding device is installed on the welding template, and the welding head of the welding template extends through the clamping template to the top of the workpiece to be welded. The clamping template is used to clamp the workpiece to be welded, and the lower template is used to position the workpiece to be welded.

[0010] Furthermore, a mold is provided on the lower template, and the workpiece is placed on the mold for positioning and welding.

[0011] Furthermore, the clamping template is provided with a through hole that matches the welding head of the welding device, and the welding head passes through the through hole to weld the workpiece to be welded on the mold.

[0012] Furthermore, the second support column is provided with a limiting groove, and the side of the pressing template is provided with a slot that matches the limiting groove, so that the pressing template can move on the limiting groove of the second support column through the slot.

[0013] Furthermore, a spring is fitted inside the limiting groove, and the spring is located between the upper surface of the pressing template and the upper end of the limiting groove, for buffering the upward movement of the pressing template.

[0014] Furthermore, a spring is fitted inside the limiting groove, and the spring is located between the upper surface of the pressing template and the upper end of the limiting groove, for buffering the upward movement of the pressing template.

[0015] Furthermore, it also includes a collision avoidance mechanical limiting mechanism, which includes a first limiting post and a second limiting post. At least one first limiting post is installed on the lower surface of the upper template, and the other end of the first limiting post extends to the top of the lower template. A second limiting post that matches the first limiting post is installed on the lower template. The second limiting post is located directly below the first limiting post, and there is a set distance between the second limiting post and the first limiting post in the initial position.

[0016] Furthermore, the upper template and the lower template are respectively provided with a number of matching support frames, and any set of support frames is provided with a detachable support frame. The support frame is used to limit the position between the upper template and the lower template when the tooling is idle.

[0017] The beneficial effects of this utility model are as follows: 1. The integrated welding fixture for door panels described in this utility model, by setting up an integrated fixture, installs all welding devices on the fixture and works according to the preset program and parameters, which can provide the fixture with the same and uniform welding parameters, such as welding time and welding temperature, to ensure that the quality of each welding point that needs to be welded can be uniform, and can reduce or even eliminate the fluctuation of welding quality caused by the difference of operators, and significantly improve the stability of welding quality.

[0018] 2. The integrated welding fixture for door panels described in this utility model sets the welding device on the welding template, enabling the welding template to drive all the welding devices to move up and down, thus completing the welding of all weld points on the workpiece in one go. This greatly saves the time required for personnel to adjust parameters between two welding points and other operations, and also effectively shortens the time required to weld a workpiece, further improving the production efficiency of the welding process and significantly improving the production progress of enterprises.

[0019] 3. The integrated welding fixture for door panels described in this utility model, by setting adjustable height clamping columns in conjunction with the welding device, can effectively fasten workpieces of different shapes by setting clamping columns at predetermined positions. By distributing all welding points and equipping each welding point with a corresponding adjustable height welding device, it can achieve precise and effective welding operations on uneven surfaces of workpieces in one go, without missing welds or incomplete welds, thus ensuring the welding quality of the workpiece. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are some embodiments of this utility model. For those skilled in the art, it is obvious that other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a front view of the integrated welding fixture for door panels described in this utility model.

[0022] Figure 2 This is a side view of the integrated welding fixture for door panels according to the present invention. The spring and welding device are omitted in the figure.

[0023] Figure 3 This is a three-dimensional drawing of the integrated welding fixture for the door panel described in this utility model. The spring and welding device are omitted in the drawing.

[0024] Figure 4 This is an enlarged view of the limiting groove described in this utility model.

[0025] In the picture:

[0026] 1-Upper template; 2-Welding template; 3-Pressure template; 4-Lower template; 5-Mold; 6-First support column; 7-Second support column; 8-Limiting groove; 9-U-shaped groove; 10-Spring; 11-Welding head mounting hole; 12-Through hole; 21-First limiting column; 22-Support frame; 24-Second limiting column. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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 or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the integrated welding fixture for door panels of this utility model includes an upper template 1, a welding template 2, a clamping template 3, and a lower template 4. Vertically, from top to bottom, these components are arranged as follows: upper template 1, welding template 2, clamping template 3, and lower template 4. The upper surface of the upper template 1 is connected to a clamping device, which drives the upper template 1 to move up and down. The clamping device can be a pneumatic cylinder or a hydraulic cylinder, etc., and the upper surface of the upper template 1 is connected to the tension rod of the pneumatic or hydraulic cylinder. The lower surface of the upper template 1 is provided with several first support columns 6. One end of each first support column 6 is fixedly connected to the lower surface of the upper template 1, and the other end is fixedly connected to the upper surface of the welding template 2. The several first support columns 6 are of equal length to ensure that the connected upper template 1 and welding template are parallel. When the upper template 1 is moved by the clamping device, the upper template 1 and welding template 2 can move in the same direction and at the same speed. Electrical components, pneumatic or hydraulic valve components can be placed on the welding template 2. These electrical components are generally used to control the welding device, and the valve components are the gas or cooling medium required by the welding device. These are commonly used valve components in welding, so they will not be described further. Some electrical components and pneumatic or hydraulic valve components can also be installed on the lower surface of the upper template 1, located above the welding template 2.

[0031] The welding template 2 is provided with a plurality of welding head mounting holes 11, the positions of which correspond to the positions of the car door to be welded. A welding device is mounted on each welding head mounting hole, and the height of the welding device can be adjusted by fasteners. Four second support columns 7 are also provided around the lower surface of the upper template 1. The four second support columns 7 are of equal length, and one end of each second support column 7 is fixedly connected to the lower surface of the upper template 1. Each second support column 7 is provided with a limiting groove 8, the horizontal position of which is consistent and lower than the horizontal position of the welding template 2. Figure 4As shown, the clamping template 3 has grooves around its perimeter, allowing it to be placed on the limiting grooves 8 of the four second support columns 7. In this embodiment, the clamping template 3 has two U-shaped grooves 9 on each of its two surfaces. These U-shaped grooves 9 match the limiting grooves 8 of the second support columns 7. By inserting the U-shaped grooves 9 on the clamping template 3 into the limiting grooves 8 on the second support columns 7, the clamping template 3 can be positioned in accordance with the cooperation of the limiting grooves 8 and the U-shaped grooves 9. More precisely, under the action of gravity, the lower end of the clamping template 3 is limited to the lower end face of the U-shaped grooves 9. Since the lengths of the second support columns 7 are all the same and the horizontal heights of the limiting grooves 8 are also the same, the clamping template 3 is parallel to the upper template 1. Since the horizontal position of the limiting grooves 8 is lower than the horizontal position of the welding template 2, the clamping template 3 is located below the welding template 2. When the lower end of the clamping template 3 is subjected to an upward external force, the clamping template 3 can move upward along the limiting grooves 8. A spring 10 is fitted inside the limiting groove 8, and the spring 10 is located above the pressing template 3. The spring 10 can press the lower end of the pressing template 3 against the lower end face of the U-shaped groove 9, and can also act as a buffer when the pressing template 3 is subjected to an upward external force.

[0032] The clamping template 3 has several through holes 12 that match the welding head mounting holes 11. The welding device can pass through the corresponding through holes 12 on the clamping template 3 to perform welding operations on the workpiece. To ensure the precise operation of the welding device, the through holes 12 can be slightly larger than the welding head mounting holes 11. Several clamping columns 13 are fixedly installed on the lower surface of the clamping template 3. An appropriate number of clamping columns 13 are arranged according to the different types of door panels and the position requirements of the welding points. The height of the clamping columns 13 can be adjusted and fixed to ensure that when the clamping plate 3 drives the clamping columns 13 to perform clamping operations on the workpiece, it can firmly and tightly clamp all the positions of the door panel that need to be clamped.

[0033] A mold 5 is fixedly mounted on the upper surface of the lower template 4. The mold 5 is used to position the workpiece to be welded and is designed according to the outline of the workpiece. The lower template 4 is fixed on the worktable. After the workpiece is placed on the mold 5, it can be pressed by the clamping column 13. At the same time, the welding points of the workpiece to be welded match the welding device. In this embodiment, the welding device is a hot riveting welding device. A certain model of car door has 60 welding points. Therefore, 60 hot riveting welding devices are fixed on the welding template 2 in this embodiment. When the clamping template 3 presses the workpiece to be welded, the welding head of each hot riveting welding device passes through the through hole 12 and reaches the welding position, so that 60 spot welding operations can be completed simultaneously. The welding template 2 is equipped with electrical components for controlling the hot riveting welding devices. Four to five hot riveting welding devices can share a set of electrical components.

[0034] Several sets of support frames 22 are fixedly installed on the upper template 1 and the lower template 4. Each set of support frames 22 is equipped with a support rod. The support rod can be removed when the equipment is performing welding work. When the equipment is idle and does not need to be operated, the support rod is placed in the set of support frames 22. The support rod can limit the position between the upper template 1 and the lower template 4 when the tooling is idle, preventing the welding head of the upper template 1 from accidentally falling and causing damage to the equipment.

[0035] When the clamping device reaches the predetermined position, it may fail to lock, causing the upper template 1 to continue moving downwards. This could lead to the welding head colliding with the workpiece to be welded. Therefore, this invention also includes a collision-prevention mechanical limiting mechanism. At least one first limiting post 21 is installed on the lower surface of the upper template 1, with the other end of the first limiting post 21 extending above the lower template 4. Due to space constraints, sometimes the other end of the first limiting post 21 needs to pass through the welding template 2 and / or the clamping template 3. When the other end of the first limiting post 21 needs to pass through the welding template 2 and / or the clamping template 3, clearance holes are designed on the welding template 2 and / or the clamping template 3. A second limiting post 24, paired with the first limiting post 21, is installed on the lower template 4. The second limiting post 24 is located directly below the first limiting post 21. There is a predetermined distance between the second limiting post 24 and the first limiting post 21 in the initial position. When the upper template 1 moves the first limiting post 21 downward, and the clamping device reaches the predetermined position, the first limiting post 21 contacts the second limiting post 24. Even if the clamping device cannot lock (e.g., if the clamping device is a hydraulic cylinder and the valve of the hydraulic system leaks, preventing the hydraulic cylinder output rod from locking), the upper template 1 will not continue to move downward. This avoids collision between the welding head and the workpiece, thus preventing damage.

[0036] When using the device for the first time, it needs to be debugged. First, use the clamping device to move the upper template 1 upward as a whole. Then, remove the support rod between the upper template 1 and the lower template 4, and fix the mold 5 in the corresponding position on the lower template 4. After the mold 5 is placed, control the clamping device to move the upper template 1, welding template 2 and clamping template 3 downward synchronously and slowly. During the downward movement, observe whether there is any deviation in the position of the welding device and the clamping column 13. If there is a deviation in position, adjust it manually by adjusting the position of the welding device or the clamping column 13 up and down, so that all the clamping columns 13 can firmly and stably clamp the position that needs to be clamped. At the same time, ensure that all the welding devices can simultaneously complete the precise and firm welding of all the welding points that need to be welded when the upper template 1 moves to a certain specific position.

[0037] Work process:

[0038] Activate the clamping device, causing the upper template 1 to move upwards to a certain height, then stop moving upwards. Place the workpiece to be welded on the mold 5 and adjust its position to ensure accurate placement. Then activate the clamping device downwards, causing the upper template 1, welding template 2, and clamping template 3 to move downwards as a whole. Since the clamping template 3 is at the bottom, the clamping columns 13 on the clamping template 3 will first contact the workpiece during the downward movement, clamping the predetermined clamping points on the workpiece. When the upper template 1 continues to move downwards, the clamping template 3 will stop moving downwards because the clamping columns 13 are in contact with the workpiece. Since the upper template 1 and the clamping template 3 are connected by a second support column 7 fixedly installed on the lower surface of the upper template 1, the second support column 7 will move downwards along with the upper template 1 as it continues to move downwards. The spring 10, fitted at the limiting groove 8 on the second support column 7, is compressed between the pressing template 3 and the second support column 7. This ensures that after the pressing column 13 on the pressing template 3 has pressed the workpiece, the second support column 7 can continue to move downward under the drive of the upper template 1. At the same time, when the spring 10 is compressed, it provides a reaction force to the pressing template 3, further pressing the pressing column 13 on the pressing template 3 onto the workpiece more tightly. After the pressing template 3 has pressed the workpiece tightly and securely, the upper template 1 continues to move downward by 10-20mm until the welding device on the welding template 2 passes through the through hole 12 on the pressing template 3 and can perform welding work on the workpiece. At this time, the pressing device stops moving downward, and the positions of the upper template 1, welding template 2, and pressing template 3 are relatively fixed. Under the condition of ensuring that the workpiece is continuously pressed, the hot riveting welding of all welding points of the workpiece is completed.

[0039] When no longer in operation, place the support rod inside the corresponding upper and lower support frames 22 to limit the position of the support frames 22, prevent the tooling from falling or shaking accidentally, and ensure that the tooling can continue to work effectively.

[0040] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0041] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent embodiments or modifications made without departing from the spirit of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A door panel integrated welding fixture, characterized in that, The assembly includes an upper template (1), a welding template (2), a clamping template (3), and a lower template (4). The upper template (1) is used to connect to the clamping device. The welding template (2) is connected to the lower part of the upper template (1) via a first support column (6). The clamping template (3) is installed on the lower part of the upper template (1) via a second support column (7). The clamping template (3) is located below the welding template (2). A welding device is installed on the welding template (2). The welding head of the welding template (2) extends through the clamping template (3) to the top of the workpiece to be welded. The clamping template (3) is used to clamp the workpiece to be welded. The lower template (4) is used to position the workpiece to be welded.

2. The integrated welding fixture for door panels according to claim 1, characterized in that, The lower template (4) is provided with a mold (5), the workpiece is placed on the mold (5), and the workpiece is positioned and welded by the mold (5).

3. The integrated welding fixture for door panels according to claim 1, characterized in that, The pressing template (3) is provided with a through hole (12) that matches the welding head of the welding device. The welding head passes through the through hole (12) to weld the workpiece to be welded on the mold (5).

4. The integrated welding fixture for door panels according to claim 1, characterized in that, The second support column (7) is provided with a limiting groove (8), and the side of the pressing template (3) is provided with a slot that matches the limiting groove (8). The pressing template (3) moves on the limiting groove (8) of the second support column (7) through the slot.

5. The integrated welding fixture for door panels according to claim 4, characterized in that, A spring (10) is fitted inside the limiting groove (8). The spring (10) is located between the upper surface of the pressing template (3) and the upper end of the limiting groove (8) to buffer the upward movement of the pressing template (3).

6. The integrated welding fixture for door panels according to claim 4, characterized in that, A spring (10) is fitted inside the limiting groove (8). The spring (10) is located between the upper surface of the pressing template (3) and the upper end of the limiting groove (8) to buffer the upward movement of the pressing template (3).

7. The integrated welding fixture for door panels according to claim 1, characterized in that, It also includes a collision-avoiding mechanical limiting mechanism, which includes a first limiting post (21) and a second limiting post (24). At least one first limiting post (21) is installed on the lower surface of the upper template (1). The other end of the first limiting post (21) extends all the way to the top of the lower template (4). A second limiting post (24) that matches the first limiting post (21) is installed on the lower template (4). The second limiting post (24) is located directly below the first limiting post (21). There is a set distance between the second limiting post (24) and the first limiting post (21) in the initial position.

8. The integrated welding fixture for door panels according to any one of claims 1-7, characterized in that, The upper template (1) and the lower template (4) are respectively provided with a number of matching support frames (22), and a detachable support rod is provided between any set of support frames (22). The support frame (22) is used to limit the position between the upper template (1) and the lower template (4) when the tooling is idle.

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