Welding apparatus for a vehicle door trim panel

Abstract

This utility model relates to the field of welding technology, and in particular to a welding device for car door trim panels, including a frame, a clamping fixture, and a welding fixture. The welding fixture has several welding units, which can simultaneously weld multiple welding positions on the car door trim panel. Each welding unit includes a first support rod fixedly mounted on the welding fixture, a second support rod rotatably mounted on the first support rod, a first base plate rotatably mounted on the second support rod, a first movable plate movably mounted on the first base plate, and welding components mounted on the first movable plate. Compared with the prior art, the welding components can be adjusted in height and rotation angle through the cooperation of the first support rod, the second support rod, and the first movable plate. Simultaneously, after adjusting the angle and height of multiple welding components, the lowering of the first movable plate allows multiple welding components to weld different positions simultaneously, shortening welding time and improving welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding device for car door trim panels. Background Technology

[0002] In related technologies, car door trim panels generally consist of an outer cover and an inner shell. The inner shell is used to fasten and install the door. The outer cover and the inner shell are welded together at multiple welding points. Depending on the shape of the outer cover and the inner shell, the height and direction of each welding point are different. Therefore, when welding the outer cover and the inner shell of the car door trim panel, it is usually necessary to use a welding robot to weld each welding point one by one. However, this welding method is time-consuming and not suitable for mass production operations.

[0003] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main objective is to provide a welding device for car door trim panels, effectively solving the technical defect of long welding time in the existing technology for car door trim panels, thereby improving the production efficiency of car door trim panels.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a welding device for car door trim panels, comprising...

[0006] The frame is equipped with a first actuator and a second actuator;

[0007] A clamping fixture is mounted on the frame and driven by a first actuator to move horizontally back and forth; the clamping fixture is provided with a cavity for clamping the door trim panel;

[0008] The welding fixture is mounted on the frame and driven to move vertically up and down by the second actuator; the welding fixture is equipped with several welding units, which can simultaneously weld multiple welding positions of the door trim panel at one time;

[0009] The welding unit includes a first support rod fixedly installed on the welding fixture, a second support rod rotatably installed on the first support rod, a first base plate rotatably installed on the second support rod, a first movable plate movably installed on the first base plate, and a welding assembly installed on the first movable plate.

[0010] The beneficial effects of the welding equipment for car door trim panels provided by the present invention are as follows: Compared with the prior art, firstly, the welding components can be adjusted in height and rotation angle through the cooperation of the first support rod, the second support rod and the first movable plate; with this structure, multiple welding components can be adjusted in angle and height at the same time, and the first movable plate can be lowered to allow several welding components to weld at different positions at one time, reducing the number of times the welding equipment needs to be adjusted and the welding operation needs to be performed during the welding process, shortening the welding time required and improving welding efficiency;

[0011] Secondly, since each welding component can be precisely adjusted to the corresponding welding position, ensuring that each welding component can be welded at the appropriate height and angle, it helps to reduce welding quality problems such as incomplete welding or missing welding caused by welding position deviation, thereby improving the welding yield.

[0012] Thirdly, this structural design enables the welding equipment to adapt to welding different models or specifications of door trim panels or different welding positions. It only requires adjusting the height and angle of the welding components and changing different clamping fixtures to meet the welding needs of different products, thereby enhancing the versatility and flexibility of the equipment and reducing the equipment replacement costs caused by product upgrades.

[0013] As a preferred embodiment, the top of the first support rod is fixedly installed on the lower surface of the welding fixture, the rear end of the second support rod is rotatably installed on the bottom of the first support rod, and the first movable plate is rotatably installed on the front end of the second support rod;

[0014] The first axis of rotation is defined as the rotation of the second support rod relative to the first support rod, and the second axis of rotation is defined as the rotation of the first movable plate relative to the second support rod. The first axis of rotation and the second axis of rotation are not coaxial.

[0015] As a preferred embodiment, the first base plate is provided with a first adjustment actuator, which includes...

[0016] The first adjusting guide rail is fixedly installed on the first base plate and extends along the vertical direction of the first base plate;

[0017] A first adjusting slider is movably mounted on a first adjusting guide rail and moves along the extension direction of the first adjusting guide rail; a first movable plate is fixedly mounted on the first adjusting slider; and,

[0018] The first adjusting cylinder is fixedly installed on the first base plate, and the telescopic rod of the first adjusting cylinder is connected to the first movable plate.

[0019] As a preferred option, the first implementing agency includes

[0020] The first guide rail is fixedly installed on the frame and extends back and forth;

[0021] The first slider is movably mounted on the first guide rail and moves along the extension direction of the first guide rail;

[0022] A first substrate is fixedly mounted on a first slider, and a clamping fixture is detachably mounted on the first substrate; and

[0023] The first actuator motor is fixedly mounted on the frame; the rotating shaft of the first actuator motor is equipped with a first screw, and the bottom of the first base plate is provided with a transmission nut sleeved on the first screw.

[0024] As a preferred embodiment, the clamping fixture has a first mounting plate at its bottom, and the upper surface of the first mounting plate has first locking protrusions on both the left and right sides.

[0025] The first locking cylinder is provided on the left and right sides of the upper surface of the first substrate. After the extension rod of the first locking cylinder is extended, it can abut against the upper surface of the first locking protrusion.

[0026] As a preferred embodiment, a first positioning cylinder is provided on the left and right sides of the lower surface of the first substrate, and the telescopic rod of the first positioning cylinder can extend and retract vertically.

[0027] The first mounting plate has a first positioning notch on the left and right sides at the bottom. After the telescopic rod of the first positioning cylinder extends upward, the telescopic rod of the first positioning cylinder can be inserted into the first positioning notch.

[0028] As a preferred embodiment, the first substrate is provided with a clamping mechanism, which is located on both the front and rear sides of the clamping fixture;

[0029] The clamping mechanism includes a first clamping rod that can be rotatably mounted, a first clamping block that is fixedly mounted on the first clamping rod, and a first rotary actuator that drives the first clamping rod to rotate.

[0030] As a preferred embodiment, the second actuator includes

[0031] The second substrate is movable and mounted on the rack; and,

[0032] The second actuator cylinder is fixedly mounted on the frame, and the telescopic rod of the second actuator cylinder is fixedly connected to the second base plate.

[0033] As a preferred embodiment, the first mounting plate is provided with first guide rods on the top left and right sides, and the welding fixture is provided with first guide holes for the first guide rods to be inserted.

[0034] The second substrate has second guide holes on its left and right sides that penetrate its upper and lower surfaces, and the frame has a second guide rod that is inserted into the second guide holes.

[0035] As a preferred embodiment, the second substrate is provided with a second locking cylinder and a second locking link. The second locking cylinder can drive the second locking link to engage with the welding fixture, thereby fixing the welding fixture to the second substrate. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a three-dimensional structural schematic diagram of the welding equipment for vehicle door trim panels provided in the embodiments of this application;

[0038] Figure 2 yes Figure 1 The diagram shows another perspective view of the welding equipment used for door trim panels;

[0039] Figure 3 yes Figure 1 The diagram shows a detailed structural diagram of the welding equipment used for vehicle door trim panels;

[0040] Figure 4 yes Figure 1 A partial structural schematic diagram of the welding equipment used for vehicle door trim panels is shown.

[0041] Figure 5 yes Figure 4 A partial three-dimensional structural diagram of the welding equipment used for door trim panels, shown from another angle;

[0042] Figure 6 yes Figure 5 The diagram shows a three-dimensional structural schematic of the welding unit of the welding equipment used for welding door trim panels.

[0043] The following are the labeling elements in the figure:

[0044] 100. Welding equipment used for car door trim panels;

[0045] 10. Frame; 11. First actuator; 111. First guide rail; 112. First slider; 113. First base plate; 1131. First locking cylinder; 1132. First positioning cylinder; 1133. First clamping rotating rod; 1134. First clamping block; 1135. First rotary actuator cylinder; 114. First actuator motor; 115. First screw; 116. Transmission nut; 12. Second actuator; 121. Second base plate; 1211. Second guide hole; 1212. Second locking cylinder; 1213. Second locking connecting rod; 122. Second actuator cylinder; 13. Second guide rod; 14. Protective door; 15. Protective plate; 16. Control box;

[0046] 20. Clamping fixture; 21. Cavity; 22. First mounting plate; 221. First locking protrusion; 222. First positioning notch; 223. First guide rod;

[0047] 30. Welding fixture; 31. Welding unit; 311. First support rod; 312. Second support rod; 313. First base plate; 314. First movable plate; 315. Welding assembly; 316. First adjustment actuator; 3161. First adjustment guide rail; 3162. First adjustment slider; 3163. First adjustment cylinder; 32. First guide hole;

[0048] a1, the first axis of rotation; a2, the second axis of rotation. Detailed Implementation

[0049] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0050] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0051] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0052] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0054] Please refer to the following: Figures 1 to 6 The welding equipment 100 for vehicle door trim panels provided in this application embodiment will now be described. The welding equipment 100 for vehicle door trim panels includes: a frame 10, a clamping fixture 20, and a welding fixture 30.

[0055] The frame 10 is provided with a first actuator 11 and a second actuator 12. The clamping fixture 20 is provided on the frame 10 and is driven by the first actuator 11 to move horizontally back and forth. The clamping fixture 20 is provided with a cavity 21 for inserting the door trim panel. The welding fixture 30 is provided on the frame 10 and is driven by the second actuator 12 to move vertically up and down. The welding fixture 30 is provided with a plurality of welding units 31. The plurality of welding units 31 can simultaneously weld multiple welding positions of the door trim panel at one time. The welding unit 31 includes a first support rod 311 fixedly installed on the welding fixture 30, a second support rod 312 rotatably installed on the first support rod 311, a first base plate 313 rotatably installed on the second support rod 312, a first movable plate 314 movably installed on the first base plate 313, and a welding assembly 315 installed on the first movable plate 314.

[0056] Specifically, in the first aspect, the welding assembly 315 can be adjusted in height and rotation angle through the cooperation of the first support rod 311, the second support rod 312 and the first movable plate 314. With this structure, the angle and height of multiple welding assemblies 315 can be adjusted at the same time. After the first movable plate 314 moves down, several welding assemblies 315 can weld at different positions at one time, which reduces the number of times the welding equipment needs to be adjusted and the welding operation needs to be performed during the welding process, shortens the welding time, and improves the welding efficiency.

[0057] Secondly, since each welding component 315 can be precisely adjusted to the corresponding welding position, ensuring that each welding component 315 can be welded at the appropriate height and angle, it helps to reduce welding quality problems such as incomplete welding or missing welding caused by welding position deviation, thereby improving the welding yield.

[0058] Thirdly, this structural design enables the welding equipment to adapt to welding different models or specifications of door trim panels or different welding positions. It only requires adjusting the height and angle of the welding component 315 and replacing different clamping fixtures 20 to meet the welding needs of different products, thereby enhancing the versatility and flexibility of the equipment and reducing the equipment replacement costs caused by product upgrades.

[0059] In some embodiments, the top of the first support rod 311 is fixedly mounted on the lower surface of the welding fixture 30, the rear end of the second support rod 312 is rotatably mounted on the bottom of the first support rod 311, and the first movable plate 314 is rotatably mounted on the front end of the second support rod 312; the second support rod 312 is defined as the first rotation axis a1 relative to the first support rod 311, and the first movable plate 314 is defined as the second rotation axis a2 relative to the second support rod 312, wherein the first rotation axis a1 and the second rotation axis a2 are not coaxial.

[0060] Preferably, one end of the second support rod 312 can swing back and forth along the first rotation axis, and the first movable plate 314 can swing left and right along the second rotation axis, so that the welding assembly 315 can adjust its specific angle back and forth and left and right, thereby adapting to the different angle requirements of different welding positions of the door trim panel.

[0061] Specifically, the first base plate 313 is provided with a first adjustment actuator 316, which includes a first adjustment guide rail 3161, a first adjustment slider 3162, and a first adjustment cylinder 3163. The first adjustment guide rail 3161 is fixedly installed on the first base plate 313 and extends along the vertical direction of the first base plate 313; the first adjustment slider 3162 is movably installed on the first adjustment guide rail 3161 and moves along the extension direction of the first adjustment guide rail 3161; the first movable plate 314 is fixedly installed on the first adjustment slider 3162; and the first adjustment cylinder 3163 is fixedly installed on the first base plate 313, with its telescopic rod connected to the first movable plate 314. With this structure, the first movable plate 314 can be driven to move vertically by the first adjustment cylinder 3163, thereby enabling the corresponding welding assembly 315 to adapt to the welding requirements of welding positions at different heights.

[0062] In other embodiments, the first actuator 11 includes a first guide rail 111, a first slider 112, a first base plate 113, and a first actuator motor 114. The first guide rail 111 is fixedly mounted on the frame 10 and extends back and forth. The first slider 112 is movably mounted on the first guide rail 111 and moves along the extension direction of the first guide rail 111. The first base plate 113 is fixedly mounted on the first slider 112, and the clamping fixture 20 is detachably mounted on the first base plate 113. The first actuator motor 114 is fixedly mounted on the frame 10. A first screw 115 is mounted on the rotating shaft of the first actuator motor 114, and a transmission nut 116 sleeved on the first screw 115 is provided at the bottom of the first base plate 113. When loading and unloading door trim panels, the first base plate 113 can be driven forward by the first actuator motor 114 to facilitate manual loading and unloading or robotic loading and unloading.

[0063] Specifically, the clamping fixture 20 has a first mounting plate 22 at its bottom, and the upper surface of the first mounting plate 22 has first locking protrusions 221 on both the left and right sides; the upper surface of the first substrate 113 has first locking cylinders 1131 on both the left and right sides, and the extension rods of the first locking cylinders 1131 can abut against the upper surface of the first locking protrusions 221 after they extend. The lower surface of the first substrate 113 has first positioning cylinders 1132 on both the left and right sides, and the extension rods of the first positioning cylinders 1132 can extend and retract up and down; the bottom of the first mounting plate 22 has first positioning notches 222 on both the left and right sides, and the extension rods of the first positioning cylinders 1132 can be inserted into the first positioning notches 222 after they extend upward.

[0064] More specifically, during the installation of the clamping fixture 20, the clamping fixture 20 is first inserted into the first base plate 113, with the first mounting plate 22 stacked on top of the first base plate 113, and the position of the first mounting plate 22 is adjusted. Then, the telescopic rod of the first positioning cylinder 1132 extends upward, so that the telescopic rod of the first positioning cylinder 1132 is inserted into the first positioning notch 222 to complete the positioning of the clamping fixture 20. Finally, the telescopic rod of the first locking cylinder 1131 extends, so that the telescopic rod of the first locking cylinder 1131 is hooked onto the upper surface of the first locking boss to complete the fixed clamping of the first mounting plate 22.

[0065] Furthermore, the first substrate 113 is provided with a clamping mechanism, which is located on both the front and rear sides of the clamping fixture 20. The clamping mechanism includes a first clamping rotating rod 1133 that can be rotatably mounted, a first clamping block 1134 fixedly mounted on the first clamping rotating rod 1133, and a first rotary actuator 1135 that drives the first clamping rotating rod 1133 to rotate. There are several first clamping blocks 1134, and the several first clamping blocks 1134 can be arranged at axial intervals along the first clamping rotating rod 1133. When the outer cover and inner shell of the door trim panel are sequentially installed on the clamping fixture 20, the first rotary actuator 1135 can drive the first clamping rotating rod 1133 to rotate, so that the several first clamping blocks 1134 can abut against the surface of the inner shell, thereby pressing the inner shell and the outer cover into the cavity 21 of the clamping fixture 20 to facilitate subsequent welding operations.

[0066] In some other embodiments, the second actuator 12 includes a second base plate 121 and a second actuator cylinder 122. The second base plate 121 is movable up and down on the frame 10. The second actuator cylinder 122 is fixedly installed on the frame 10, and the telescopic rod of the second actuator cylinder 122 is fixedly connected to the second base plate 121.

[0067] Specifically, the first mounting plate 22 has first guide rods 223 on its top left and right sides, and the welding fixture 30 has first guide holes 32 for inserting the first guide rods 223; the second substrate 121 has second guide holes 1211 penetrating its upper and lower surfaces on its left and right sides, and the frame 10 has second guide rods 13 inserted into the second guide holes 1211. The length of the first guide rods 223 is less than the total stroke of the vertical displacement of the second substrate 121, so that after the second actuator cylinder 122 drives the second substrate 121 to move upward to the limit stroke position, the first guide rods 223 can disengage from the first guide holes 32, so that the first actuator 11 can drive the welding fixture 30 to move horizontally back and forth for loading and unloading of the door trim panels.

[0068] More specifically, the second substrate 121 is provided with a second locking cylinder 1212 and a second locking link 1213. The second locking cylinder 1212 can drive the second locking link 1213 to engage with the welding fixture 30, so that the welding fixture 30 is fixed to the second substrate 121.

[0069] It is understood that in this embodiment, there are two clamping fixtures 20, each of which is equipped with a first actuator 11, a welding fixture 30, and a second actuator 12. The front and rear sides of the frame 10 may be selectively provided with protective doors 14, and protective plates 15 are provided at the protective door 14 positions on the sides of the frame 10. One clamping fixture 20 can be driven by the first actuator 11 to move forward and approach the front protective door 14 for loading and unloading. The other clamping fixture can be driven by the second actuator 12 to move backward and approach the rear protective door 14 for loading and unloading.

[0070] It should be noted that the frame 10 is also equipped with a control box 16, which contains a control system. The control system is used to control the operation of the first actuator 11, the first locking cylinder 1131, the first positioning cylinder 1132, the first rotary actuator 1135, the second actuator 12, and the welding unit 31. This is a conventional design method for technicians in the field of non-standard automated equipment, and will not be described in detail here.

[0071] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A welding apparatus for a door trim panel, characterized by, include The frame (10) is provided with a first actuator (11) and a second actuator (12); A clamping fixture (20) is mounted on a frame (10) and driven by a first actuator (11) to move horizontally back and forth; the clamping fixture (20) is provided with a cavity (21) for clamping the door trim panel. The welding fixture (30) is mounted on the frame (10) and driven vertically up and down by the second actuator (12); the welding fixture (30) is provided with several welding units (31), and the several welding units (31) can simultaneously weld multiple welding positions of the door trim panel at one time; The welding unit (31) includes a first support rod (311) fixedly installed on the welding fixture (30), a second support rod (312) rotatably installed on the first support rod (311), a first base plate (313) rotatably installed on the second support rod (312), a first movable plate (314) movably installed on the first base plate (313), and a welding assembly (315) installed on the first movable plate (314).

2. The welding apparatus for a door trim according to claim 1, characterized by, The top of the first support rod (311) is fixedly installed on the lower surface of the welding fixture (30), the rear end of the second support rod (312) is rotatably installed on the bottom of the first support rod (311), and the first movable plate (314) is rotatably installed on the front end of the second support rod (312). The second support rod (312) is defined as the first axis of rotation relative to the first support rod (311), and the first movable plate (314) is defined as the second axis of rotation relative to the second support rod (312). The first axis of rotation and the second axis of rotation are not coaxial.

3. The welding apparatus for a door trim according to claim 1 or 2, characterized by, The first base plate (313) is provided with a first regulating actuator (316), the first regulating actuator (316) includes The first adjusting guide rail (3161) is fixedly installed on the first base plate (313) and extends along the vertical direction of the first base plate (313); The first adjusting slider (3162) is movably mounted on the first adjusting guide rail (3161) and moves along the extending direction of the first adjusting guide rail (3161); the first movable plate (314) is fixedly mounted on the first adjusting slider (3162); and, The first adjusting cylinder (3163) is fixedly installed on the first base plate (313), and the telescopic rod of the first adjusting cylinder (3163) is connected to the first movable plate (314).

4. The welding apparatus for a door trim according to claim 1, characterized by, The first executive body (11) includes The first guide rail (111) is fixedly installed on the frame (10) and extends back and forth; The first slider (112) is movably mounted on the first guide rail (111) and moves along the extension direction of the first guide rail (111); The first substrate (113) is fixedly mounted on the first slider (112), and the clamping fixture (20) is detachably mounted on the first substrate (113); and, The first actuator motor (114) is fixedly mounted on the frame (10); the first actuator motor (114) has a first screw (115) mounted on its rotating shaft, and the bottom of the first base plate (113) has a transmission nut (116) sleeved on the first screw (115).

5. The welding apparatus for a door trim according to claim 4, characterized by, The clamping fixture (20) has a first mounting plate (22) at the bottom, and the upper surface of the first mounting plate (22) has a first locking protrusion (221) on both the left and right sides. The first base plate (113) has a first locking cylinder (1131) on the left and right sides of the upper surface. The extension rod of the first locking cylinder (1131) can abut against the upper surface of the first locking protrusion (221) after it extends.

6. The welding apparatus for a door trim according to claim 5, characterized by The lower surface of the first substrate (113) is provided with a first positioning cylinder (1132) on the left and right sides. The telescopic rod of the first positioning cylinder (1132) can extend and retract up and down. The bottom left and right sides of the first mounting plate (22) are provided with first positioning notches (222). After the telescopic rod of the first positioning cylinder (1132) extends upward, the telescopic rod of the first positioning cylinder (1132) can be inserted into the first positioning notch (222).

7. The welding apparatus for a door trim according to claim 5 or 6, characterized by, The first substrate (113) is provided with a clamping mechanism, which is located on both the front and rear sides of the clamping fixture (20); The clamping mechanism includes a first clamping rod (1133) that is rotatably mounted, a first clamping block (1134) that is fixedly mounted on the first clamping rod (1133), and a first rotary actuator (1135) that drives the first clamping rod (1133) to rotate.

8. The welding apparatus for a door trim according to claim 1 or 2 or 4 or 5 or 6, characterized by, The second executive body (12) includes The second substrate (121) is movable and mounted on the frame (10); and, The second actuator cylinder (122) is fixedly installed on the frame (10), and the telescopic rod of the second actuator cylinder (122) is fixedly connected to the second base plate (121).

9. The welding apparatus for a door trim according to claim 8, characterized by, The first mounting plate (22) has first guide rods (223) on the top left and right sides, and the welding fixture (30) has first guide holes (32) for inserting the first guide rods. The second substrate (121) has second guide holes (1211) on the left and right sides that penetrate its upper and lower surfaces, and the frame (10) has a second guide rod (13) that is inserted into the second guide hole (1211).

10. The welding apparatus for a door trim panel according to claim 8, characterized by, The second substrate (121) is provided with a second locking cylinder (1212) and a second locking link (1213). The second locking cylinder (1212) can drive the second locking link (1213) to engage with the welding fixture (30) so that the welding fixture (30) is fixed on the second substrate (121).

Images