Welding jig and welding equipment

Abstract

The embodiment of the utility model relates to the technical field of welding, and particularly discloses a welding jig and welding equipment, which comprise a base, a first lifting component, a jig component and a positioning component, the first lifting assembly is arranged on the base; the jig assembly comprises a jig base and a jig cover plate, the jig base is arranged on the base, the jig base is provided with a bearing part, the jig cover plate is connected to the first lifting assembly, the first lifting assembly is used for driving the jig cover plate to do linear reciprocating motion in the height direction, the jig cover plate is located above the jig base, and the jig cover plate is provided with a window; the window is aligned with the bearing part, the bearing part is used for bearing the to-be-welded part, the jig cover plate is used for pressing and fixing the to-be-welded part, and the window is used for exposing the welding position of the to-be-welded part; the positioning assembly is arranged on the jig base and used for penetrating through and positioning a to-be-welded part. By means of the mode, the welding jig can position, press and fix to-be-welded parts in different shapes, and the adaptability of the welding jig is improved.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of welding, and particularly to a welding jig and a welding device. Background Art

[0002] A welding jig is a tooling fixture used to assist welding, which is used to fix or position the workpieces to be welded, prevent the displacement or deviation of the workpieces to be welded caused by thermal stress or vibration during the welding process, ensure the welding accuracy, reduce the secondary welding of the workpieces to be welded, and improve the welding efficiency.

[0003] Currently, a welding jig usually includes a base and a flip cover. The base is provided with a groove adapted to a workpiece of a certain shape, and the flip cover is provided with a window. After the workpiece is inserted into the groove, by flipping the flip cover, the workpiece is clamped and fixed between the base and the flip cover, and the window corresponds to the welding position of the workpiece, so as to install the workpiece on the welding jig. However, the above structure can only be adapted to workpieces of a certain shape, resulting in low adaptability of the welding jig. Summary of the Utility Model

[0004] The main technical problem to be solved by the embodiments of the present utility model is to provide a welding jig and a welding device, which can be adapted to workpieces of different shapes and improve the adaptability of the welding jig.

[0005] To solve the above technical problem, one technical solution adopted by the embodiments of the present utility model is: to provide a welding jig, including a base, a first lifting component, a jig component and a positioning component; the first lifting component is arranged on the base; the jig component includes a jig base and a jig cover plate. The jig base is arranged on the base, the jig base is provided with a bearing part, the jig cover plate is connected to the first lifting component, the first lifting component is used to drive the jig cover plate to do linear reciprocating motion in the height direction, the jig cover plate is located above the jig base, the jig cover plate is provided with a window, the window is aligned with the bearing part, the bearing part is used to bear the workpiece to be welded, the jig cover plate is used to press and fix the workpiece to be welded, and the window is used to expose the welding position of the workpiece to be welded; the positioning component is arranged on the jig base, and the positioning component is used to penetrate and position the workpiece to be welded.

[0006] In some embodiments, the positioning component includes at least two first positioning pins and at least two second positioning pins. The at least two first positioning pins and the at least two second positioning pins are arranged on the jig base. The at least two first positioning pins are located on one side of the bearing part, and the at least two second positioning pins are located on the other side of the bearing part. The at least two first positioning pins are used to penetrate and position one workpiece to be welded, and the at least two second positioning pins are used to penetrate and position another workpiece to be welded.

[0007] In some embodiments, the welding jig includes a second lifting assembly disposed between the base and the jig base. The second lifting assembly is connected to the positioning assembly and is configured to drive the positioning assembly to perform a linear reciprocating motion in the height direction.

[0008] In some embodiments, the second lifting assembly includes a support base, a slider, a slide bar, and a push rod. The support base is disposed between the base and the jig base and is connected to the jig base. The support base is provided with a lifting space and a sliding space. The slider is liftably disposed in the lifting space. The first positioning pin and the second positioning pin are fixed to the slider. The push rod is slidably connected to the sliding space. The push rod is provided with an inclined slot. One end of the slide bar is fixed to the slider, and the other end of the slide bar is slidably connected to the inclined slot.

[0009] In some embodiments, the second lifting assembly includes a return spring connected between the push rod and the support base.

[0010] In some embodiments, the welding jig includes a first position limiting assembly. The first position limiting assembly includes a first limiting block, a first screw, a first nut, a second limiting block, a second screw, and a second nut. Along a first direction, the first limiting block and the second limiting block respectively abut against opposite sides of the support base. The first limiting block is provided with a first sliding groove. The first screw sequentially passes through the first sliding groove and the base and is screwed to the first nut. The second limiting block is provided with a second sliding groove. The second screw sequentially passes through the second sliding groove and the base and is screwed to the second nut.

[0011] In some embodiments, the welding jig includes a second limiting assembly. The second limiting assembly includes a third limiting block, a third screw, and a third nut. Along a second direction perpendicular to the first direction, the third limiting block abuts against one side of the support base. The third limiting block is provided with a third sliding groove. The third screw sequentially passes through the third sliding groove and the base and is screwed to the third nut.

[0012] In some embodiments, the first lifting assembly includes a cylinder, a first connecting member, a second connecting member, a fixed seat, a slide rail, and a slide table. The cylinder is fixed to the base. One end of the first connecting member is connected to the cylinder, and the other end of the first connecting member is connected to the second connecting member. One side of the second connecting member is connected to the slide table. The slide table is slidably connected to the slide rail, and the slide rail is fixed to the base. The other side of the second connecting member is connected to the fixed seat, and the jig cover is fixed to the fixed seat.

[0013] In some embodiments, the number of the tool covers and the number of the bearing parts are both multiple. All the multiple tool covers are connected to the first lifting component. One tool cover is located above one bearing part. The opening window of one tool cover corresponds to one bearing part. One tool cover and one bearing part are used to press and fix a workpiece to be welded. The opening window is used to expose the welding position of the workpiece to be welded.

[0014] To solve the above technical problem, another technical solution adopted in the embodiment of the present utility model is: to provide a welding device including the above welding jig.

[0015] The beneficial effects of the embodiment of the present utility model are as follows: Different from the prior art, the embodiment of the present utility model provides a welding jig, which includes a base, a first lifting component, a tool component, and a positioning component. The first lifting component is arranged on the base. The tool component includes a tool base and a tool cover. The tool base is arranged on the base. The tool base is provided with a bearing part. The tool cover is connected to the first lifting component. The first lifting component is used to drive the tool cover to make a linear reciprocating motion along the height direction. The tool cover is located above the tool base. The tool cover is provided with an opening window, and the opening window is aligned with the bearing part. The bearing part is used to carry the workpiece to be welded. The tool cover is used to press and fix the workpiece to be welded. The opening window is used to expose the welding position of the workpiece to be welded. The positioning component is arranged on the tool base and is used to penetrate and position the workpiece to be welded. By the above method, the embodiment of the present utility model can position and press and fix workpieces to be welded with different shapes, so that the welding jig is adapted to workpieces to be welded with different shapes, and the adaptability of the welding jig is improved. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.

[0017] Figure 1 is the overall structural schematic diagram of the welding jig provided by the embodiment of the present utility model;

[0018] Figure 2 is the overall structural sectional view of the welding jig provided by the embodiment of the present utility model;

[0019] Figure 3 is Figure 2 the partial enlarged view at A in

[0020] Figure 4 is the partial structural schematic of the welding jig provided by the embodiment of the present utility model Figure 1 ;

[0021] Figure 5 Partial structural schematic diagram of the welding jig provided by the embodiment of the present utility model Figure 2 ;

[0022] Figure 6 Partial structural schematic diagram of the welding jig provided by the embodiment of the present utility model Figure 3 。

[0023] Description of reference numerals:

[0024] 100 Welding jig

[0025] 1 Base

[0026] 2 First lifting assembly, 21 Cylinder, 22 First connecting member, 23 Second connecting member, 24 Fixed seat, 25 Slide rail, 26 Slide table

[0027] 3 Jig assembly, 31 Jig base, 311 Bearing part, 312 Avoidance groove, 32 Jig cover plate, 321 Window opening, 322 First part, 323 Second part

[0028] 4 Positioning assembly, 41 First positioning pin, 42 Second positioning pin

[0029] 5 Second lifting assembly, 51 Support seat, 511 Lifting space, 512 Sliding space, 52 Slide block, 53 Slide bar, 54 Push rod, 541 Oblique groove, 55 Return spring

[0030] 6 First limiting assembly, 61 First limiting block, 611 First chute, 62 Second limiting block, 621 Second chute

[0031] 7 Second limiting assembly, 71 Third limiting block, 711 Third chute

[0032] X First direction, Y Second direction Specific implementation manner

[0033] To facilitate the understanding of the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in this specification in the description of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0035] A welding jig is a kind of tooling fixture used to assist welding, which is used to fix or position the workpiece to be welded, prevent the displacement or deviation of the workpiece to be welded caused by thermal stress or vibration during the welding process, ensure the welding accuracy, reduce the secondary welding of the workpiece to be welded, and improve the welding efficiency.

[0036] Currently, a welding jig generally includes a base and a flip cover. The base is provided with a groove adapted to a workpiece of a certain shape, and the flip cover is provided with a window. After the workpiece is inserted into the groove, by flipping the flip cover, the workpiece is clamped and fixed between the base and the flip cover, and the window corresponds to the welding position of the workpiece, thereby realizing the installation of the workpiece on the welding jig. However, the above structure can only be adapted to workpieces of a certain shape, resulting in low adaptability of the welding jig.

[0037] In view of this, the present utility model provides an embodiment of a welding jig 100, which can position and press different-shaped workpieces to be welded, so that the welding jig 100 can be adapted to different-shaped workpieces to be welded, and improve the adaptability of the welding jig 100.

[0038] For the above-mentioned welding jig 100, please refer to Figures 1 to 3The welding jig 100 includes a base 1, a first lifting assembly 2, a jig assembly 3 and a positioning assembly 4; the first lifting assembly 2 is arranged on the base 1; the jig assembly 3 includes a jig base 31 and a jig cover 32, the jig base 31 is arranged on the base 1, the jig base 31 is provided with a bearing portion 311, the jig cover 32 is connected to the first lifting assembly 2, the first lifting assembly 2 is used to drive the jig cover 32 to make a linear reciprocating motion along the height direction, the jig cover 32 is located above the jig base 31, the jig cover 32 is provided with a window 321, the window 321 is aligned with the bearing portion 311, the bearing portion 311 is used to carry the workpiece to be welded, the jig cover 32 is used to press the workpiece to be welded, the window 321 is used to expose the welding position of the workpiece to be welded, and the window 321 is also used for the welding head to extend into and contact the welding position of the workpiece to be welded; the positioning assembly 4 is arranged on the jig base 31, and the positioning assembly 4 is used to penetrate and position the workpiece to be welded.

[0039] For the above-mentioned welding jig 100, its use process is illustrated as follows: first, the jig cover 32 is driven to rise in the height direction by the first lifting assembly 2, so that the jig base 31 and the jig cover 32 are separated in the height direction; then, the positioning assembly 4 is driven to penetrate the workpiece to be welded, so that the workpiece to be welded is positioned on the jig base 31, and the workpiece to be welded is at least partially supported on the supporting portion 311, and the welding position of the workpiece to be welded is aligned with the window 321; finally, the jig cover 32 is driven to descend in the height direction by the first lifting assembly 2 until the jig cover 32 abuts against the side of the workpiece to be welded away from the jig base 31, so that the workpiece to be welded is pressed between the jig base 31 and the jig cover 32, so as to realize the installation of the workpiece to be welded on the welding jig 100. In the above manner, the jig base 31 and the jig cover 32 can press and fix workpieces of different shapes to be welded, reduce the shape restrictions of the welding jig 100 on the installation of the workpiece to be welded, and improve the adaptability of the welding jig 100.

[0040] For the fixture base 31, see Figures 1 to 3 The jig base 31 is provided with an avoidance groove 312 at the periphery of the bearing portion 311, and the avoidance groove 312 is arranged around the bearing portion 311. In the above manner, the avoidance groove 312 can accommodate the irregular convex portion of the workpiece to be welded, so that the jig base 31 and the jig cover plate 32 can press and fix the irregular workpiece to be welded, expand the range of the jig base 31 and the jig cover plate 32 to press and fix the workpieces to be welded of different shapes, and further improve the adaptability of the welding jig 100.

[0041] For the above-mentioned fixture cover 32, please refer to Figures 1 to 3, the fixture cover plate 32 includes a first part 322 and a second part 323. One side of the first part 322 is connected to the first lifting component 2, and the other side of the first part 322 is connected to the second part 323. The projection of the first part 322 in the height direction overlaps with the projection of the first lifting component 2 in the height direction, and the projection of the second part 323 in the height direction deviates from the projection of the first lifting component 2 in the height direction. The opening 321 is located in the second part 323. In this way, it is possible to avoid the first lifting component 2 blocking the second part 323 in the height direction, thereby facilitating the welding head to extend into the opening 321 in the height direction and contact the welding position of the workpiece to be welded, and avoiding the collision between the welding head and the first lifting component 2.

[0042] For the above positioning component 4, please refer to Figures 1 to 3 , the positioning component 4 includes at least two first positioning pins 41 and at least two second positioning pins 42. The at least two first positioning pins 41 and the at least two second positioning pins 42 are arranged on the fixture base 31. The at least two first positioning pins 41 are located on one side of the bearing part 311, and the at least two second positioning pins 42 are located on the other side of the bearing part 311. The at least two first positioning pins 41 are used to penetrate and position a workpiece to be welded, and the at least two second positioning pins 42 are used to penetrate and position another workpiece to be welded. In this way, the positioning component 4 can penetrate and position two different workpieces to be welded, so that the welding fixture 100 can be used to install two different workpieces to be welded, facilitating the subsequent welding of the two different workpieces to be welded.

[0043] It should be noted that the positioning component 4 includes but is not limited to being used to penetrate and position two workpieces to be welded, that is, the positioning component 4 is used to penetrate and position multiple workpieces to be welded. When the positioning component 4 is used to penetrate and position multiple workpieces to be welded, one workpiece to be welded corresponds to one positioning pin. For example: the first positioning pin 41 corresponds to the first workpiece to be welded, the second positioning pin 42 corresponds to the second workpiece to be welded, the third positioning pin corresponds to the third workpiece to be welded, and so on. By analogy. It should also be noted that when the positioning component 4 is used to penetrate and position the workpiece to be welded, the workpiece to be welded is provided with a through hole into which the positioning component 4 is inserted.

[0044] Please refer to Figure 4 and Figure 5 , the welding fixture 100 includes a second lifting component 5. The second lifting component 5 is arranged between the base 1 and the fixture base 31. The second lifting component 5 is connected to the positioning component 4, and the second lifting component 5 is used to drive the positioning component 4 to perform a linear reciprocating motion in the height direction. In this way, it is possible to lower the positioning component 4 so that the positioning component 4 is separated from the workpiece to be welded, facilitating the disassembly of the workpiece to be welded after welding.

[0045] For the above second lifting component 5, please refer to Figure 4 and Figure 5, the second lifting component 5 includes a support base 51, a slider 52, a sliding rod 53 and a push rod 54. The support base 51 is arranged between the base 1 and the fixture base 31. The support base 51 is connected to the fixture base 31. The support base 51 is provided with a lifting space 511 and a sliding space 512. The slider 52 is liftably arranged in the lifting space 511. The first positioning pin 41 and the second positioning pin 42 are fixed to the slider 52. The push rod 54 is slidably connected to the sliding space 512. The push rod 54 is provided with an inclined slot 541. One end of the sliding rod 53 is fixed to the slider 52, and the other end of the sliding rod 53 is slidably connected to the inclined slot 541. In this way, when a thrust is applied to the push rod 54, the push rod 54 can be driven to move along the sliding space 512, and then the sliding rod 53 slides and descends along the inclined slot 541, so that the slider 52 follows the sliding rod 53 to descend, so that the first positioning pin 41 and the second positioning pin 42 follow the slider 52 to descend.

[0046] Further, for the above-mentioned second lifting component 5, please refer to Figure 4 and Figure 5 , the second lifting component 5 includes a return spring 55. The return spring 55 is connected between the push rod 54 and the support base 51. In this way, when a thrust is applied to the push rod 54, the return spring 55 is compressed and deformed, and the return spring 55 generates an elastic force; when the thrust on the push rod 54 is withdrawn, the return spring 55 recovers from the deformation, and the push rod 54 moves reversely along the sliding space 512 under the action of the elastic force, and then the sliding rod 53 slides and rises along the inclined slot 541, so that the slider 52 follows the sliding rod 53 to rise, so that the first positioning pin 41 and the second positioning pin 42 follow the slider 52 to rise and reset.

[0047] In some embodiments, the return spring 55 is connected between one side of the push rod 54 extending out of the sliding space 512 and one side of the support base 51. Alternatively, in some embodiments, the return spring 55 is connected between one side of the push rod 54 extending into the sliding space 512 and the inner wall of the sliding space 512.

[0048] Please refer to Figure 1 and Figure 6 , the welding fixture 100 includes a first position limiting component 6. The first position limiting component 6 includes a first limiting block 61, a first screw, a first nut, a second limiting block 62, a second screw and a second nut. Along the first direction X, the first limiting block 61 and the second limiting block 62 respectively abut against the opposite sides of the support base 51. The first limiting block 61 is provided with a first sliding groove 611. The first screw sequentially passes through the first sliding groove 611 and the base 1 and is screwed to the first nut. The second limiting block 62 is provided with a second sliding groove 621. The second screw sequentially passes through the second sliding groove 621 and the base 1 and is screwed to the second nut. In this way, the support base 51 can be abutted and limited along the first direction X to fix the support base 51, and then the second lifting component 5 can be fixed, so as to fix the fixture base 31.

[0049] It should be noted that since the first screw passes through the first chute 611 and the base 1 in sequence and is then screwed to the first nut, it is possible to rotate the first nut to make the first nut disengage from abutting against the base 1, and then drive the first screw to move along the first chute 611, thereby changing the position of the first limiting block 61, so as to change the position of the support seat 51 along the first direction X, realizing the movement of the jig base 31 and changing the welding position of the workpiece to be welded; or, since the second screw passes through the second chute 621 and the base 1 in sequence and is then screwed to the second nut, it is also possible to rotate the second nut to make the second nut disengage from abutting against the base 1, and then drive the second screw to move along the second chute 621, thereby changing the position of the second limiting block 62, so as to change the position of the support seat 51 along the first direction X, realizing the movement of the jig base 31 and changing the welding position of the workpiece to be welded.

[0050] Please refer to Figure 1 and Figure 6 , the welding jig 100 includes a second limiting component 7, and the second limiting component 7 includes a third limiting block 71, a third screw and a third nut. Along the second direction Y, the third limiting block 71 abuts against one side of the support seat 51. The third limiting block 71 is provided with a third chute 711. The third screw passes through the third chute and the base 1 in sequence and is then screwed to the third nut. The second direction Y is perpendicular to the first direction X. By the above method, it is possible to abut and limit the support seat 51 along the second direction Y, realize the further fixation of the support seat 51, and then realize the further fixation of the second lifting component 5, thereby realizing the further fixation of the jig base 31.

[0051] It should be noted that since the third screw passes through the third chute 711 and the base 1 in sequence and is then screwed to the third nut, it is possible to rotate the third nut to make the third nut disengage from abutting against the base 1, and then drive the third screw to move along the third chute 711, thereby changing the position of the third limiting block 71, so as to change the position of the support seat 51 along the second direction Y, realizing the movement of the jig base 31 and changing the welding position of the workpiece to be welded.

[0052] For the above first lifting component 2, please refer to Figure 1 and Figure 2, the first lifting component 2 includes a cylinder 21, a first connecting member 22, a second connecting member 23, a fixed seat 24, a slide rail 25 and a slide table 26. The cylinder 21 is fixed to the base 1. One end of the first connecting member 22 is connected to the cylinder 21, and the other end of the first connecting member 22 is connected to the second connecting member 23. One side of the second connecting member 23 is connected to the slide table 26, and the slide table 26 is slidably connected to the slide rail 25. The slide rail 25 is fixed to the base 1. The other side of the second connecting member 23 is connected to the fixed seat 24, and the fixture cover plate 32 is fixed to the fixed seat 24. In this way, when the cylinder 21 expands and contracts in the height direction, the first connecting member 22 follows the expansion and contraction end of the cylinder 21 and moves up and down in the height direction. The second connecting member 23 follows the first connecting member 22 and moves up and down in the height direction under the guiding action of the slide rail 25 and the slide table 26. The fixed seat 24 follows the second connecting member 23 and moves up and down in the height direction, and the fixture cover plate 32 follows the fixed seat 24 and moves up and down in the height direction.

[0053] Please refer to Figure 1 and Figure 2 , the number of the fixture cover plates 32 and the bearing parts 311 is multiple. A plurality of fixture cover plates 32 are all connected to the first lifting component 2. One fixture cover plate 32 is located above one bearing part 311. The opening 321 of one fixture cover plate 32 corresponds to one bearing part 311. One fixture cover plate 32 and one bearing part 311 are used to press and fix one workpiece to be welded, and one opening 321 is used to expose the welding position of one workpiece to be welded. In this way, the welding fixture 100 can synchronously install multiple different workpieces to be welded or multiple groups of different workpieces to be welded, and then realize the synchronous welding of multiple different workpieces to be welded or multiple groups of different workpieces to be welded, which helps to reduce the error or deviation between multiple different workpieces to be welded or between multiple groups of different workpieces to be welded, so that the welding between multiple different workpieces to be welded or between multiple groups of different workpieces to be welded is consistent, and helps to improve the welding efficiency.

[0054] An embodiment of the present utility model provides a welding jig 100, which includes a base 1, a first lifting assembly 2, a jig assembly 3, and a positioning assembly 4. The first lifting assembly 2 is arranged on the base 1. The jig assembly 3 includes a jig base 31 and a jig cover 32. The jig base 31 is arranged on the base 1. The jig base 31 is provided with a bearing portion 311. The jig cover 32 is connected to the first lifting assembly 2. The first lifting assembly 2 is used to drive the jig cover 32 to perform a linear reciprocating motion in the height direction. The jig cover 32 is located above the jig base 31. The jig cover 32 is provided with an opening 321. The opening 321 is aligned with the bearing portion 311. The bearing portion 311 is used to bear the workpiece to be welded. The jig cover 32 is used to press and fix the workpiece to be welded. The opening 321 is used to expose the welding position of the workpiece to be welded. The positioning assembly 4 is arranged on the jig base 31. The positioning assembly 4 is used to penetrate and position the workpiece to be welded. By the above method, the embodiment of the present utility model can position and press different-shaped workpieces to be welded, so that the welding jig 100 is adapted to different-shaped workpieces to be welded, and the adaptability of the welding jig 100 is improved.

[0055] The present utility model further provides an embodiment of a welding device. The welding device includes the above-mentioned welding jig 100. For the specific structure and function of the above-mentioned welding jig 100, reference can be made to the above-mentioned embodiment, and details will not be repeated here.

[0056] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be included in the patent protection scope of the present utility model by the same token.

Claims

1. A welding jig, characterized in that, Comprising: Base; A first lifting component, disposed on the base; A jig component, including a jig base and a jig cover plate. The jig base is disposed on the base. The jig base is provided with a bearing portion. The jig cover plate is connected to the first lifting component. The first lifting component is configured to drive the jig cover plate to perform a linear reciprocating motion in the height direction. The jig cover plate is located above the jig base. The jig cover plate is provided with an opening window, and the opening window is aligned with the bearing portion. The bearing portion is used for bearing the workpiece to be welded. The jig cover plate is used for pressing and fixing the workpiece to be welded. The opening window is used for exposing the welding position of the workpiece to be welded; A positioning component, disposed on the jig base, and the positioning component is configured to penetrate and position the workpiece to be welded.

2. The welding jig according to claim 1, wherein The positioning component includes at least two first positioning pins and at least two second positioning pins. The at least two first positioning pins and the at least two second positioning pins are disposed on the jig base. The at least two first positioning pins are located on one side of the bearing portion. The at least two second positioning pins are located on the other side of the bearing portion. The at least two first positioning pins are configured to penetrate and position one workpiece to be welded. The at least two second positioning pins are configured to penetrate and position another workpiece to be welded.

3. The welding jig according to claim 2, wherein The welding jig includes a second lifting component. The second lifting component is disposed between the base and the jig base. The second lifting component is connected to the positioning component. The second lifting component is configured to drive the positioning component to perform a linear reciprocating motion in the height direction.

4. The welding jig according to claim 3, wherein The second lifting component includes a support seat, a slider, a slide bar, and a push rod. The support seat is disposed between the base and the jig base. The support seat is connected to the jig base. The support seat is provided with a lifting space and a sliding space. The slider is liftably disposed in the lifting space. The first positioning pin and the second positioning pin are fixed to the slider. The push rod is slidably connected to the sliding space. The push rod is provided with an inclined groove. One end of the slide bar is fixed to the slider, and the other end of the slide bar is slidably connected to the inclined groove.

5. The welding jig according to claim 4, wherein The second lifting component includes a return spring, and the return spring is connected between the push rod and the support seat.

6. The welding jig according to claim 5, wherein The welding jig includes a first position limiting component. The first position limiting component includes a first limiting block, a first screw, a first nut, a second limiting block, a second screw, and a second nut. Along a first direction, the first limiting block and the second limiting block respectively abut against opposite sides of the support seat. The first limiting block is provided with a first sliding groove. The first screw sequentially passes through the first sliding groove and the base and is then screwed to the first nut. The second limiting block is provided with a second sliding groove. The second screw sequentially passes through the second sliding groove and the base and is then screwed to the second nut.

7. The welding jig according to claim 6, wherein the welding jig includes a second limiting component, the second limiting component includes a third limiting block, a third screw rod and a third nut. Along the second direction, the third limiting block abuts against one side of the support seat. The third limiting block is provided with a third sliding groove. The third screw rod sequentially passes through the third sliding groove and the base and is screwed to the third nut. The second direction is perpendicular to the first direction.

8. The welding jig according to claim 1, wherein the first lifting component includes a cylinder, a first connecting piece, a second connecting piece, a fixed seat, a slide rail and a slide table. The cylinder is fixed to the base. One end of the first connecting piece is connected to the cylinder, and the other end of the first connecting piece is connected to the second connecting piece. One side of the second connecting piece is connected to the slide table. The slide table is slidably connected to the slide rail, and the slide rail is fixed to the base. The other side of the second connecting piece is connected to the fixed seat, and the jig cover plate is fixed to the fixed seat.

9. The welding jig according to any one of claims 1-8, wherein the number of the jig cover plates and the number of the bearing parts are both multiple. A plurality of the jig cover plates are all connected to the first lifting component. One jig cover plate is located above one bearing part. The window opening of one jig cover plate corresponds to one bearing part. One jig cover plate and one bearing part are used for pressing and fixing a workpiece to be welded. One window opening is used for exposing the welding position of a workpiece to be welded.

10. A welding device, characterized in that, including the welding jig according to any one of claims 1-9.

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