A welding limiting device

Abstract

This utility model discloses a welding limiting device, including a first support base and a limiting cover plate. The first support base is disposed next to a jig for placing a workpiece. The limiting cover plate is connected to the first support base and can be positioned above the jig. The limiting cover plate is provided with a plurality of limiting holes. The limiting holes are used for the front end of the welding torch to pass through to achieve welding of the workpiece. The limiting cover plate is used to limit the setting position of the welding torch. This utility model provides a welding limiting device that can limit the welding torch, reduce welding deviations, and help improve the welding quality of the workpiece.

Description

Technical Field

[0001] This utility model belongs to the technical field of limiting devices, specifically relating to a welding limiting device. Background Technology

[0002] In the production of automotive exterior injection molded parts (hereinafter referred to as workpieces), workers manually weld the workpiece structure using a welding torch. After successful welding, the workpiece becomes a qualified product. Previously, due to the lack of appropriate welding limiting devices, welding deviations (such as inconsistent weld depths at different welding points) were prone to occur during manual welding. This affected both the appearance of the workpiece and the overall welding quality, leading to an increased defect rate. Therefore, it is necessary to develop a welding limiting device to control the welding torch, reduce welding deviations, and improve the welding quality of the workpiece. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a welding limiting device that can limit the welding torch, reduce welding deviations, and help improve the welding quality of the workpiece.

[0004] The present invention adopts the following technical solution: A welding limiting device includes a first support base and a limiting cover plate. The first support base is disposed next to a jig for placing a workpiece. The limiting cover plate is connected to the first support base and can be positioned above the jig. The limiting cover plate is provided with a plurality of limiting holes. The limiting holes are used for the front end of a welding torch to pass through to achieve welding of the workpiece. The limiting cover plate is used to limit the setting position of the welding torch.

[0005] Furthermore, the limiting cover plate is rotatably connected to the first support base.

[0006] Furthermore, the limiting cover is rotatably connected to the first support base via a hinge assembly.

[0007] Furthermore, the limiting hole is a circular hole.

[0008] Furthermore, after the welding torch tip passes through the limiting hole, the workpiece placed on the welding jig is welded, and the weld depth is controlled between 1.0 mm and 1.2 mm.

[0009] Furthermore, a welding limiting device also includes a second support base; the second support base is disposed next to the tire seat; the bottom surface of the limiting cover plate is provided with a plurality of legs; the legs can rest directly or indirectly on the second support base.

[0010] Furthermore, the second support base is provided with an adjustment component; the adjustment component is used to support the support leg.

[0011] Furthermore, the adjusting assembly includes a nut and a bolt; the second support base has a first hole for the bolt to pass through; the nut is connected to the second support base, and the threaded hole of the nut communicates with the first hole; the bolt passes through the first hole and the threaded hole; the top of the bolt is used to support the support leg.

[0012] Furthermore, a welding limiting device also includes a clamping device; the clamping device is disposed on the second support base; the clamping device is used to press the workpiece on the jig base in a timely manner.

[0013] Furthermore, the clamping device includes a fixed base, an adjusting mechanism, and a pressure head; the fixed base is fixed on the second support base; the adjusting mechanism is tunably connected to the fixed base; the pressure head is connected to the adjusting mechanism; the adjusting mechanism can drive the pressure head to move; the pressure head is used to press the workpiece on the jig seat in a timely manner.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: A welding limiting device includes a first support seat located next to a jig seat. The first support seat provides a structural foundation for a limiting cover plate, allowing the limiting cover plate to be positioned above the jig seat to limit the welding torch. When a workpiece needs to be welded, the workpiece is placed on the jig seat, and the limiting cover plate is positioned above the jig seat. After the tip of the welding torch passes through the limiting hole, it extends downward to the workpiece. Because the setting position of the welding torch is restricted by the limiting cover plate, the tip cannot extend further downward. Therefore, the tip of the welding torch (i.e., the bottom) will maintain a set welding distance from the workpiece. After the welding torch welds the workpiece, the weld depth is basically consistent (reducing welding deviation), improving the aesthetic appearance of the weld on the workpiece, improving the welding quality of the weld on the workpiece, and reducing the defect rate of the workpiece. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a three-dimensional schematic diagram of the welding limiting device from a first-person perspective; Figure 2 This is a three-dimensional schematic diagram of the welding limiting device from a second perspective; Figure 3 This is a 3D schematic diagram of the adjustment components; Figure 4 This is a three-dimensional schematic diagram of the clamping device's pressure head; Figure 5 This is a three-dimensional schematic diagram of the workpiece.

[0016] Figure label: 1-First support seat; 2-Limit cover plate; 21-Limit hole; 22-Support leg; 3-placenta; 4-Hinges; 5-Second support seat; 51-Wing plate; 6-Adjusting assembly; 61-Nut; 62-Bolt; 7-Clamping device; 71-Pressure head; 8-Workpiece; 9-Base plate assembly; 91-Base plate; 92-Foot pad. Detailed Implementation

[0017] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0018] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," and "right" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0019] Reference Figures 1 to 5 A welding limiting device includes a first support base 1 and a limiting cover plate 2. The first support base 1 is disposed next to a jig 3 for placing a workpiece 8. The limiting cover plate 2 is connected to the first support base 1 and can be positioned above the jig 3. The limiting cover plate 2 is provided with a plurality of limiting holes 21. The limiting holes 21 are used for the front end of a welding torch to pass through to achieve welding of the workpiece 8. The limiting cover plate 2 is used to limit the set position of the welding torch (such as the tube section of the welding torch). For example, if the barrel of the welding torch is a cylindrical barrel, there is a tube section at the (upper) end of the barrel. The lower end of the welding torch can extend downwards through the limiting hole 21. After the torch barrel is fully extended downwards, the end section of the torch barrel abuts against the upper surface of the limiting cover plate 2, preventing the torch from extending further downwards. The tip (lowest end) of the torch maintains a set welding distance from the workpiece 8 on the base 3. Through the limiting cover plate 2 with the limiting hole 21, the welding depth of the weld seam on the workpiece 8 remains essentially consistent after welding, improving the aesthetic appearance and welding quality of the weld seam. The weld seam includes weld spots, i.e., weld seams formed by spot welding.

[0020] Reference Figures 1 to 5 In one embodiment, the limiting cover 2 is rotatably connected to the first support base 1.

[0021] Reference Figures 1 to 5 In one embodiment, the limiting cover 2 is rotatably connected to the first support base 1 via a hinge assembly.

[0022] Reference Figures 1 to 5 In one embodiment, the hinge assembly includes a hinge 4 and a screw; one side of the hinge 4 is fixedly connected to the first support base 1 via the screw; the other side of the hinge 4 is fixedly connected to the limiting cover plate 2 via the screw; the limiting cover plate 2 is rotatably mounted on the first support base 1 via the hinge 4; when the fixture 3 needs to place the workpiece 8, the limiting cover plate 2 can be flipped (backwards) so that the workpiece 8 can be smoothly placed on the fixture 3; when the workpiece 8 needs to be welded, the limiting cover plate 2 can be flipped (forwards). Turn back so that the limiting cover 2 is above the base 3. Then, the worker holds the welding gun and passes the barrel through the limiting hole 21 to weld the workpiece 8 on the base 3. Due to the limiting effect of the limiting cover 2, after the welding gun has welded each position of the workpiece 8, the welding depth of each weld on the workpiece 8 is basically consistent, which improves the appearance of the weld on the workpiece 8, improves the welding quality of the weld, and reduces the defect rate of the workpiece 8. After the workpiece 8 is welded, the limiting cover 2 can be flipped (towards the back), and then the workpiece 8 on the base 3 can be removed.

[0023] Reference Figures 1 to 5 In one embodiment, the limiting cover plate 2 is provided with a plurality of limiting holes 21; preferably, the limiting cover plate 2 is provided with six limiting holes 21, and the six limiting holes 21 are arranged in a row.

[0024] Reference Figures 1 to 5 In one embodiment, the limiting hole 21 is a circular hole.

[0025] In one embodiment, the welding torch tip passes through the limiting hole 21 and then welds the workpiece 8 placed on the welding jig 3, with the weld depth controlled between 1.0 mm and 1.2 mm.

[0026] Reference Figures 1 to 5 In one embodiment, a welding limiting device further includes a second support base 5; the second support base 5 is disposed next to the tire seat 3; the bottom surface of the limiting cover plate 2 is provided with a plurality of support legs 22; the support legs 22 can rest directly or indirectly on the second support base 5.

[0027] Reference Figures 1 to 5In one embodiment, the second support base 5 is provided with an adjustment component 6; the adjustment component 6 is used to support the support leg 22. That is, the support leg 22 rests indirectly on the second support base 5 through the adjustment component 6.

[0028] Reference Figures 1 to 5 In one embodiment, the adjusting assembly 6 includes a nut 61 and a bolt 62; the second support 5 has a first hole for the bolt 62 to pass through; the nut 61 is connected to the second support 5, and the threaded hole of the nut 61 communicates with the first hole; the bolt 62 is disposed through the first hole and the threaded hole; the top of the bolt 62 is used to support the support leg 22.

[0029] Reference Figures 1 to 5 In one embodiment, the wing plate 51 of the second support base 5 is provided with the first hole, which is a through hole. The nut 61 is welded and fixed below the wing plate 51 of the second support base 5, and the threaded hole of the nut 61 is aligned and connected with the first hole. The bolt 62 passes through the first hole and the threaded hole. Since the bolt 62 and the nut 61 are threadedly connected, the bolt 62 can be adjusted in height. The top of the bolt 62 is used to support the support leg 22. After the limiting cover 2 rests on the top of the bolt 62 through the support leg 22, the limiting cover 2 maintains a set distance from the workpiece 8 on the lower base 3. This utility model limits the downward extension distance of the welding torch by the limiting cover 2, which can avoid the problem of the worker's unstable hand holding the welding torch causing excessive welding depth to the workpiece, and helps to avoid the appearance bulge of the workpiece 8.

[0030] Reference Figures 1 to 5 In one embodiment, a welding limiting device further includes a clamping device 7; the clamping device 7 is disposed on the second support base 5; the clamping device 7 is used to press the workpiece 8 on the jig base 3 as needed. Preferably, the clamping device 7 includes a fixed base, an adjusting mechanism, and a pressure head 71; the fixed base is fixed on the second support base 5; the adjusting mechanism is adjustablely connected to the fixed base; the pressure head 71 is connected to the adjusting mechanism; the adjusting mechanism can drive the pressure head 71 to move; the pressure head 71 is used to press the workpiece 8 on the jig base 3 as needed. It should be noted that the fixed base and the adjusting mechanism are not the focus of this invention; the fixed base and the adjusting mechanism are both prior art, and can be referred to the prior art for details, which will not be repeated here. By adjusting the adjusting mechanism, the pressure head 71 connected to the adjusting mechanism can press the workpiece 8 on the jig base 3 as needed, and can also release the pressure on the workpiece 8 as needed.

[0031] Reference Figures 1 to 5In one embodiment, the first support seat 1, the tire seat 3, and the second support seat 5 are all disposed on the base plate device 9; the base plate device 9 includes a base plate 91 and a plurality of pads 92; a plurality of pads 92 are disposed under the base plate 91; the pads 92 are used to abut against the ground; the first support seat 1, the tire seat 3, and the second support seat 5 are all disposed on the base plate 91.

[0032] Reference Figures 1 to 5 In one embodiment, the workpiece 8 is an automotive exterior injection molded part; however, it should be noted that the workpiece of this utility model is not limited to automotive exterior injection molded parts.

[0033] Reference Figures 1 to 5 In one embodiment, the limiting cover 2 is rotatably connected to the first support base 1 via a hinge assembly. When the workpiece 8 needs to be welded, the limiting cover 2 is first flipped (backwards). Then, the adjusting mechanism is adjusted so that the pressure head 71 does not obstruct the workpiece 8 from being placed on the base 3. Next, the workpiece 8 is placed on the base 3. After that, the adjusting mechanism is adjusted so that the pressure head 71 presses the workpiece 8. Finally, the limiting cover 2 is flipped back (forwards), and the worker can then hold the welding gun and weld the workpiece 8 on the base 3 through the limiting hole 21.

[0034] After the workpiece 8 is welded, the limiting cover plate 2 is flipped (towards the back), and the adjusting mechanism is adjusted so that the pressure head 71 no longer presses against the workpiece 8 and no longer obstructs the removal of the workpiece 8; then, the workpiece 8 is removed from the base 3; after the workpiece 8 is removed, the limiting cover plate 2 is flipped (forwards) so that the limiting cover plate 2 returns to its original position.

[0035] In one embodiment, the welding limiting device of this utility model has the following advantages: (1) The limiting cover plate 2 with limiting hole 21 of this utility model can effectively avoid the problem of excessive welding depth on the surface of the workpiece by manual welding; through the limiting cover plate 2 with limiting hole 21, the welding depth of the weld on the workpiece 8 can be basically consistent, which can improve the stability of the workpiece 8 after welding, effectively avoid the bulging of the surface of the workpiece 8, and improve the aesthetic appearance of the welded workpiece 8.

[0036] (2) The welding limiting device of this utility model has a reliable structure and is mainly used in the scenario where workers hold a welding torch to weld workpiece 8.

[0037] Other aspects of the welding limiting device described in this utility model are found in the prior art and will not be repeated here.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A welding limiting device, characterized in that, The device includes a first support base and a limiting cover plate. The first support base is disposed next to a jig for placing the workpiece. The limiting cover plate is connected to the first support base and can be positioned above the jig. The limiting cover plate is provided with a plurality of limiting holes. The limiting holes are used to allow the front end of the welding torch to pass through to achieve welding of the workpiece. The limiting cover plate is used to limit the setting position of the welding torch.

2. The welding limiting device according to claim 1, characterized in that, The limiting cover plate is rotatably connected to the first support base.

3. The welding limiting device according to claim 2, characterized in that, The limiting cover is rotatably connected to the first support base via a hinge assembly.

4. The welding limiting device according to claim 1, characterized in that, The limiting hole is a round hole.

5. A welding limiting device according to claim 1, characterized in that, After the welding torch tip passes through the limiting hole, the workpiece placed on the welding jig is welded, and the weld depth is controlled between 1.0 mm and 1.2 mm.

6. A welding limiting device according to any one of claims 1 to 5, characterized in that, It also includes a second support seat; the second support seat is located next to the tire seat; the bottom surface of the limiting cover plate is provided with several support legs; the support legs can rest directly or indirectly on the second support seat.

7. A welding limiting device according to claim 6, characterized in that, The second support base is provided with an adjustment component; the adjustment component is used to support the support leg.

8. A welding limiting device according to claim 7, characterized in that, The adjusting assembly includes a nut and a bolt; the second support base has a first hole for the bolt to pass through; the nut is connected to the second support base, and the threaded hole of the nut communicates with the first hole; the bolt passes through the first hole and the threaded hole; the top of the bolt is used to support the support leg.

9. A welding limiting device according to claim 6, characterized in that, It also includes a clamping device; the clamping device is disposed on the second support base; the clamping device is used to press the workpiece on the jig base in a timely manner.

10. A welding limiting device according to claim 9, characterized in that, The clamping device includes a fixed base, an adjusting mechanism, and a pressure head; the fixed base is fixed on the second support base; the adjusting mechanism is tunably connected to the fixed base; the pressure head is connected to the adjusting mechanism; the adjusting mechanism can drive the pressure head to move; the pressure head is used to press the workpiece on the jig seat in a timely manner.

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