A lithium battery stroller front frame assembly welding tool
The positioning and clamping device of the welding fixture for the front frame of the lithium battery stroller solves the problem of the difficulty in ensuring the position of the diagonal brace tube and the battery mounting seat during the welding process of the front frame of the lithium battery stroller, thereby improving the welding quality and the versatility of the tooling equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBEI WELDINGJUE ROBOT TECHNOLOGY CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-28
AI Technical Summary
During the welding process of the front frame of the lithium battery stroller, it is difficult to ensure the relative position of the diagonal brace tube and the battery mounting base, and the curvature of the battery retainer is easily deformed during the welding process, resulting in unstable welding quality.
The welding fixture for the front frame of the children's stroller using lithium batteries includes a base, a positioning and clamping device for the first sub-assembly of the front frame, a positioning and clamping device for the battery mounting seat, and a positioning and clamping device for the battery retainer. Through reliable positioning and clamping action and position adjustment, the stability and fit of the welded workpiece are ensured.
It improves welding quality and the versatility of tooling equipment, ensuring the relative positional stability of welded workpieces and the fit of welded parts.
Smart Images
Figure CN224560388U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding technology, specifically a welding fixture for the front frame assembly of a lithium battery stroller. Background Technology
[0002] As attached Figure 1 , Figure 2 As shown, a front frame component 1 of a children's stroller equipped with a lithium battery includes a front upright tube 1-1, a diagonal brace tube 1-2, a connecting tube 1-3, a seat tube 1-4, a battery mounting base 1-5, and a battery retainer 1-6. The battery mounting base 1-5 is a buckle box with an opening facing downwards. The top surface of the buckle box has a T-shaped structure. A diagonal brace tube insertion hole 1-5-1 is opened at the front of the buckle box. The lower end of the diagonal brace tube 1-2 is inserted into the front cavity of the buckle box through the diagonal brace tube insertion hole 1-5-1. The battery retainer 1-6 is a sheet-like structure with a certain degree of curvature. Its lower end is welded to the rear end of the buckle box, and its upper end is welded to the seat tube. The components of the front frame 1 are assembled by welding. The welding of the front frame 1 is completed by two welding processes. The first process includes welding the front upright tube 1-1, the diagonal brace tube 1-2, the connecting tube 1-3 and the seat tube 1-4 to form the first sub-assembly of the front frame. The first process also includes welding the lower end of the battery mounting bracket 1-5 and the battery retainer 1-6 to form the second sub-assembly of the front frame. The second process is welding the first sub-assembly of the front frame and the second sub-assembly of the front frame together to form the front frame component.
[0003] The lithium battery stroller is a newly developed product, requiring innovative design of its frame welding fixtures. In particular, for the second welding process of the front frame of the lithium battery stroller, namely the welding process of the first sub-assembly and the second sub-assembly of the front frame, since the lower end of the diagonal support tube 1-2 needs to be inserted into the front cavity of the battery mounting seat 1-5, it is necessary to ensure the relative position of the lower end of the diagonal support tube 1-2 and the diagonal support tube insertion hole 1-5-1 on the battery mounting seat 1-5. At the same time, since the battery retainer 1-6 is a sheet structure with a certain degree of curvature, there is deformation stress during its bending and forming process. When the first sub-assembly of the front frame is welded, its curvature changes as the deformation stress is released. Therefore, when welding its upper end to the seat tube 1-4, a certain clamping force is required to make the upper end of the battery retainer 1-6 fit against the outer wall of the seat tube. Utility Model Content
[0004] This utility model provides a welding fixture for the front frame of a lithium battery stroller. The purpose is to ensure the stability of the relative position of the welded workpiece and the fit of the welded parts through the reliable positioning and clamping of each component in the welding fixture. By adjusting the position of each component in the welding fixture, the welding quality and the versatility of the tooling equipment can be improved.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A welding fixture for the front frame of a lithium battery-powered children's stroller includes a base, a front frame first sub-assembly positioning and clamping device, a battery mounting seat positioning and clamping device, and a battery retainer positioning and clamping device. The base is horizontally arranged, and these devices are mounted on its platform. The front frame first sub-assembly positioning and clamping device includes two workpiece positioning and clamping units that respectively mate with the front upright tube and the seat tube, arranged parallel to the rear edge of the base platform. The battery mounting seat positioning and clamping device includes a battery mounting seat positioning block and a downward-pressing clamping clamp. The battery mounting seat positioning block is located in the area that mates with the periphery of the battery mounting seat workpiece. Two sets of downward-pressing clamps are provided to clamp and fix the battery mounting seat workpiece from both the front and rear sides. The battery retainer positioning and clamping device includes a side-push clamping clamp and a battery retainer positioning seat. The battery retainer positioning seat is mounted on the base, and the side-push clamping clamp is fitted onto the battery retainer positioning seat.
[0006] The aforementioned welding fixture for the front frame of the lithium battery-powered children's stroller includes a bracket, an angle adjustment seat, a push-down clamping pliers, a clamping pliers assembly seat, and a workpiece pressing head in each workpiece positioning and clamping unit of the first sub-assembly positioning and clamping device of the front frame. The bracket is assembled with the base, and an angle adjustment seat is mounted on the upper end of the bracket. The angle adjustment seat is a slotted seat with an opening facing forward. A clamping pliers assembly seat is mounted on the outer wall of the upper end of the slotted seat, and a workpiece pressing head is mounted on the outer wall of the lower end of the slotted seat. A push-down clamping pliers is mounted on the clamping pliers assembly seat. A workpiece pressing head is installed at the end of the driven arm of the push-down clamping pliers. The workpiece pressing head installed at the end of the driven arm of the push-down clamping pliers is arranged opposite to the workpiece pressing head mounted on the outer wall of the lower end of the angle adjustment seat. The two workpiece pressing heads arranged vertically cooperate to clamp and fix the front upright tube or seat tube.
[0007] The aforementioned welding fixture for the front frame assembly of a lithium battery-powered stroller features a height-adjustable workpiece pressing head mounted at the end of the driven arm of the push-type clamping pliers. This height-adjustable structure consists of a screw that is fitted to the driven arm of the push-type clamping pliers, and the workpiece pressing head mounted at the end of the driven arm is fixed to the lower end of the screw.
[0008] The aforementioned welding fixture for the front frame assembly of the lithium battery stroller has an L-shaped bracket for the workpiece positioning and clamping unit. An angle adjustment seat with an elongated hole for adjusting the vertical position is provided on the upper end of its vertical wall. The angle adjustment seat has a fixed part and a rotating part, and a pin is installed between the fixed part and the rotating part. An arc-shaped elongated hole is provided on the fixed part, and a screw hole is provided on the rotating part. The rotating part and the fixed part are fastened together by screws passing through the arc-shaped elongated hole of the fixed part and the screw hole of the rotating part.
[0009] The aforementioned welding fixture for the front frame of the lithium battery stroller includes an L-shaped positioning seat for the battery retainer in the battery retainer positioning and clamping device. The horizontal wall of the L-shaped positioning seat is assembled with the base, and a U-shaped frame is set on the upper part of the vertical wall of the L-shaped positioning seat. The outer wall of the U-shaped frame is integrated with the vertical wall of the L-shaped positioning seat. A battery retainer limiting groove is provided on the inner wall of the U-shaped frame, and a through hole matching the pressure head of the side-push clamping pliers is provided in the battery retainer limiting groove. The side-push clamping pliers are installed on the outer wall of the U-shaped frame, and their driven arm passes through the U-shaped frame and the through hole in the battery retainer limiting groove. An adjustable-length pressure head is provided at the end of the driven arm of the side-push clamping pliers.
[0010] The aforementioned welding fixture for the front frame assembly of the lithium battery stroller includes an adjustable-length pressure head that screws into a side-push clamping plier and inserts a flat-head bolt into the boom.
[0011] In the aforementioned lithium battery stroller front frame welding fixture, the battery mounting seat positioning block in the battery mounting seat positioning and clamping device is an L-shaped positioning block. The horizontal wall of the L-shaped positioning block is assembled with the base, and the vertical wall height of the L-shaped positioning block is less than the inner cavity height of the battery mounting seat.
[0012] The aforementioned welding fixture for the front frame of the lithium battery stroller has a workpiece positioning and clamping unit position adjustment groove, a battery mounting seat positioning block and a battery retainer positioning seat position adjustment groove, and an assembly hole on the platform of the base. Correspondingly, each workpiece positioning and clamping unit in the first sub-assembly positioning and clamping device of the front frame has a first protruding slider and a first elongated hole that cooperate with the corresponding groove on its bracket, a second elongated hole on its battery mounting seat positioning block, and a second protruding slider and a third elongated hole that cooperate with the corresponding groove on its battery retainer positioning seat.
[0013] This utility model provides a welding fixture for the front frame of a lithium battery-powered children's stroller. It uses two workpiece positioning and clamping units in the first sub-assembly positioning and clamping device of the front frame to clamp and fix the front upright tube and seat tube of the front frame component, respectively. The battery mounting seat is clamped and positioned by a battery mounting seat positioning and clamping device, and a lateral clamping force is applied to the upper end of the battery retainer by a battery retainer positioning and clamping device. Therefore, after the workpiece is clamped, the lower end of the diagonal support tube can be inserted into the front cavity of the retainer box through the diagonal support tube insertion hole on the retainer box, while simultaneously ensuring that the upper end of the battery retainer is in contact with the outer wall of the lower end of the seat tube. This ensures that the relative position of the workpiece meets the welding operation requirements. Furthermore, this utility model uses adjustment grooves and assembly holes on the base platform to cooperate with corresponding parts in the welding fixture. This allows for adjustment of the workpiece position and adaptability to welding operations of front frames of lithium battery-powered children's strollers of different sizes. In summary, this utility model, through the above technical means, ensures the stability of the relative position of the welded workpiece and the fit of the welded parts, thereby improving welding quality and the versatility of the tooling equipment. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the front frame components of a lithium battery-powered children's stroller; Figure 2 This is a schematic diagram of the front frame first sub-assembly and the front frame second sub-assembly before welding; Figure 3 A schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the workpiece positioning and clamping unit in the positioning and clamping device of the first sub-assembly of the front frame; Figure 5 yes Figure 4 A schematic diagram after rotation around the vertical axis; Figure 6 This is a schematic diagram of the base, battery mounting bracket positioning and clamping device, and battery retainer positioning and clamping device; Figure 7 This is a schematic diagram of the battery retainer positioning and clamping device. Figure 8 This is a schematic diagram of the working state of this utility model.
[0015] Explanation of each label in the diagram: 1 is the front frame, 1-1 is the front upright tube, 1-2 is the diagonal brace tube, 1-3 is the connecting tube, 1-4 is the seat tube, 1-5 is the battery mounting bracket, 1-5-1 is the diagonal brace tube insertion hole, and 1-6 is the battery retainer. 2 is the base, 2-1 is the workpiece positioning and clamping unit position adjustment slide, 2-2 is the assembly hole, and 2-3 is the battery mounting seat positioning block and battery retainer positioning seat position adjustment slide. 3 is the positioning and clamping device for the first sub-assembly of the front frame. 3-1 is a bracket, 3-1-1 is a first protruding slider, 3-1-2 is a first elongated hole, 3-1-3 is an elongated hole for adjusting the up and down position of the angle adjustment seat, 3-2 is an angle adjustment seat, 3-2-1 is a fixing part, 3-2-2 is a rotating part, 3-2-3 is an arc-shaped elongated hole, 3-3 is a clamping clamp assembly seat, 3-4 is a push-down clamping clamp, 3-4-1 is a screw, and 3-5 is a workpiece pressing head; 4 is a battery mounting bracket positioning and clamping device. 4-1 is a pressure clamping clamp, 4-2 is a battery mounting base positioning block, and 4-2-1 is the second elongated hole; 5 is the battery retainer positioning and clamping device. 5-1 is a side-push clamping clamp, 5-1-1 is a flat-head bolt, 5-2 is a battery retainer positioning seat, 5-2-1 is a battery retainer limiting groove, 5-2-2 is a through hole, 5-2-3 is the third elongated hole, and 5-2-4 is the second protruding slider. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0017] See Figure 1. Figure 2 A front frame component 1 for a children's stroller equipped with a lithium battery includes a front upright tube 1-1, a diagonal brace tube 1-2, a connecting tube 1-3, a seat tube 1-4, a battery mounting base 1-5, and a battery retainer 1-6. The battery mounting base 1-5 is a downward-opening snap-fit box with a T-shaped top surface. A diagonal brace tube insertion hole 1-5-1 is provided at the front of the snap-fit box, and the lower end of the diagonal brace tube 1-2 is inserted into the front cavity of the snap-fit box through the diagonal brace tube insertion hole 1-5-1. The battery retainer 1-6 is a sheet-like structure with a certain degree of curvature, with its lower end welded to the rear end of the snap-fit box and its upper end welded to the seat tube. The components of the front frame 1 are assembled by welding. The welding of the front frame 1 is completed by two welding processes. The first process includes welding the front upright tube 1-1, the diagonal brace tube 1-2, the connecting tube 1-3 and the seat tube 1-4 to form the first sub-assembly of the front frame. The first process also includes welding the lower end of the battery mounting bracket 1-5 and the battery retainer 1-6 to form the second sub-assembly of the front frame. The second process is welding the first sub-assembly of the front frame and the second sub-assembly of the front frame together to form the front frame component.
[0018] See Figure 3 This utility model provides a welding fixture for the front frame assembly of a lithium battery-powered children's stroller, comprising a base 2, a front frame first sub-assembly positioning and clamping device 3, a battery mounting seat positioning and clamping device 4, and a battery retainer positioning and clamping device 5. The base 2 is horizontally arranged, and the front frame first sub-assembly positioning and clamping device 3, the battery mounting seat positioning and clamping device 4, and the battery retainer positioning and clamping device 5 are assembled on the platform of the base 2. The front frame first sub-assembly positioning and clamping device 3 includes two workpiece positioning and clamping units that respectively cooperate with the front upright tube 1-1 and the seat tube 1-4, and the two workpiece positioning and clamping units are arranged parallel to the rear edge of the platform of the base 2.
[0019] See Figure 4 , Figure 5The lithium battery stroller front frame welding fixture of this utility model has a bracket 3-1, an angle adjustment seat 3-2, a push-down clamping clamp 3-4, a clamping clamp assembly seat 3-3, and a workpiece pressing head 3-5 in each workpiece positioning and clamping unit of the first sub-assembly positioning and clamping device 3 of the front frame. The bracket 3-1 is assembled with the base 2, and the angle adjustment seat 3-2 is mounted on the upper end of the bracket 3-1. The angle adjustment seat 3-2 is a slotted seat with an opening facing forward. The clamping clamp assembly seat 3-3 is mounted on the outer wall of the upper end of the slotted seat, and the workpiece pressing head 3-5 is mounted on the outer wall of the lower end of the slotted seat. The push-down clamping clamp 3-4 is mounted on the clamping clamp assembly seat 3-3. The workpiece pressing head is installed at the end of the driven arm of the push-down clamping clamp 3-4. The workpiece pressing head 3-5 is mounted at the end of the driven arm of the push-down clamping pliers 3-4 and is arranged opposite to the workpiece pressing head mounted on the lower outer wall of the angle adjustment seat 3-2. The two workpiece pressing heads 3-5 arranged vertically and vertically cooperate to press and fix the front upright tube 1-1 or the seat tube 1-4. The workpiece pressing head 3-5 mounted at the end of the driven arm of the push-down clamping pliers 3-4 adopts a height-adjustable structure. The height-adjustable structure is a screw 3-4-1 that is matched with the driven arm of the push-down clamping pliers. The workpiece pressing head 3-5 mounted at the end of the driven arm is fixed at the lower end of the screw 3-4-1. The height position of the workpiece pressing head 3-5 can be adjusted by adjusting the depth of the screw 3-4-1 screwed into the driven arm of the push-down clamping pliers.
[0020] See Figure 4 The welding fixture for the front frame of the lithium battery stroller described in this utility model has an L-shaped bracket 3-1 for its workpiece positioning and clamping unit. An angle adjustment seat with an elongated hole 3-1-3 for adjusting the vertical position is provided on the upper end of its vertical wall. The angle adjustment seat 3-2 has a fixing part 3-2-1 and a rotating part 3-2-2. A pin is fitted between the fixing part 3-2-1 and the rotating part 3-2-2. An arc-shaped elongated hole 3-2-3 is provided on the fixing part 3-2-1, and a screw hole is provided on the rotating part 3-2-2. A screw passing through the arc-shaped elongated hole 3-2-3 of the fixing part 3-2-1 and the screw hole of the rotating part 3-2-2 allows for the connection of the workpiece positioning and clamping unit. The rotating part 3-2-2 and the fixed part 3-2-1 are fastened together by the screw. When it is necessary to adjust the angle of the workpiece extrusion head 3-5 according to the tilt angle set by the front upright tube 1-1 or the seat tube 1-4, first loosen the screw passing through the arc-shaped long hole 3-2-3 of the fixed part 3-2-1 and the screw hole of the rotating part 3-2-2. Then, by installing the pin between the fixed part 3-2-1 and the rotating part 3-2-2, the rotating part 3-2-2 is rotated at a certain angle. After adjusting the angle of the workpiece extrusion head 3-5 to be consistent with the angle of the front upright tube 1-1 or the seat tube 1-4, the rotating part 3-2-2 is fixed by the screw.
[0021] See Figure 6The lithium battery-powered children's stroller front frame welding fixture of this utility model includes a battery mounting seat positioning and clamping device 4 with a battery mounting seat positioning block 4-2 and a downward clamping clamp 4-1. The battery mounting seat positioning block 4-2 is arranged in the area that mates with the periphery of the battery mounting seat 1-5 workpiece. The battery mounting seat positioning block 4-2 is an L-shaped positioning block. It is assembled with the base 2 through the horizontal wall of the L-shaped positioning block. The height of the vertical wall of the L-shaped positioning block is less than the height of the inner cavity of the battery mounting seat 1-5, so that the lower opening of the battery mounting seat 1-5 fits against the base 2. Therefore, it is easier to measure the size of the welded workpiece with the base 2 as a horizontal reference. Two sets of downward clamping clamps 4-1 are provided to clamp and fix the battery mounting seat 1-5 workpiece from the front and rear sides.
[0022] See Figure 6 , Figure 7 The lithium battery stroller front frame welding fixture of this utility model includes a battery retainer positioning and clamping device 5 with a side-push clamping pliers 5-1 and a battery retainer positioning seat 5-2. The battery retainer positioning seat 5-2 is an L-shaped positioning seat, which is assembled with the base 2 through the horizontal wall of the L-shaped positioning seat. A U-shaped frame is set on the upper part of the vertical wall of the L-shaped positioning seat. The outer wall of the U-shaped frame is integrated with the vertical wall of the L-shaped positioning seat. A battery retainer limiting groove 5-2-1 is provided on the inner wall of the U-shaped frame, and a through hole 5-2-2 matching the pressure head of the side-push clamping pliers 5-1 is provided in the battery retainer limiting groove 5-2-1. The side-push clamping pliers 5-1 are mounted on... Mounted on the outer wall of the U-shaped frame, its driven arm passes through the U-shaped frame and the through hole 5-2-2 on the battery retainer groove 5-2-1. An adjustable-length pressure head is provided at the end of the driven arm of the side-push clamping pliers 5-1. The adjustable-length pressure head is a flat-head bolt 5-1-1 screwed into the driven arm of the side-push clamping pliers 5-1. The front and rear positions of the flat-head bolt 5-1-1 can be adjusted by adjusting the depth of the flat-head bolt 5-1-1 screwed into the driven arm of the side-push clamping pliers 5-1, so as to ensure that the side-push clamping pliers 5-1 applies sufficient clamping force to the upper end of the battery retainer 1-6, so that the upper end of the battery retainer 1-6 fits against the seat tube 1-4.
[0023] See Figures 1 to 8When welding the front frame of a lithium battery stroller using this utility model, firstly, standard samples of the first and second sub-assemblies of the front frame are used as reference parts. The battery mounting seat 1-5 in the standard sample of the second sub-assembly of the front frame is positioned and clamped using the battery mounting seat positioning and clamping device 4. Then, the lower end of the diagonal support tube 1-2 in the standard sample of the first sub-assembly of the front frame is inserted into the diagonal support tube insertion hole 1-5-1 of the clamped battery mounting seat 1-5. The positions of the two workpiece positioning and clamping units in the positioning and clamping device of the first sub-assembly of the front frame are adjusted. Do not clamp and fix the upper and lower ends of the front riser tube 1-1 and seat tube 1-4 in the standard sample of the first sub-assembly of the front frame. Then, press the upper end of the battery retainer 1-6 in the standard sample of the second sub-assembly of the front frame with the battery retainer 5, so that the battery retainer 1-6 is in contact with the outer wall of the seat tube 1-4. Perform the first piece welding operation. After inspecting that the dimensions of the front frame 1 workpiece are qualified after welding, the tooling debugging work is completed. The position of each component in this utility model at this time is used as the reference position. Remove the standard sample and, according to the installation steps of the standard sample, position and clamp the workpiece to be welded, and then perform the welding operation.
Claims
1. A lithium battery stroller front frame assembly welding tool, characterized in that: The system includes a base (2), a front frame first sub-assembly positioning and clamping device (3), a battery mounting seat positioning and clamping device (4), and a battery retainer positioning and clamping device (5). The base (2) is horizontally arranged, and the front frame first sub-assembly positioning and clamping device (3), the battery mounting seat positioning and clamping device (4), and the battery retainer positioning and clamping device (5) are mounted on the platform of the base (2). The front frame first sub-assembly positioning and clamping device (3) includes two workpiece positioning and clamping units that respectively cooperate with the front riser (1-1) and the seat tube (1-4). The two workpiece positioning and clamping units are arranged parallel to the rear edge of the platform of the base (2). The mounting and clamping device (4) is provided with a battery mounting base positioning block (4-2) and a pressing clamp (4-1). The battery mounting base positioning block (4-2) is arranged in the area that mates with the periphery of the battery mounting base (1-5) workpiece. The pressing clamp (4-1) is provided in two sets to press and fix the battery mounting base (1-5) workpiece from the front and rear sides. The battery retainer positioning and clamping device (5) is provided with a side-push clamp (5-1) and a battery retainer positioning seat (5-2). The battery retainer positioning seat (5-2) is installed on the base (2), and the side-push clamp (5-1) is fitted on the battery retainer positioning seat (5-2).
2. The lithium battery stroller front frame assembly welding tooling of claim 1, wherein: Each workpiece positioning and clamping unit of the first sub-assembly positioning and clamping device (3) of the front frame is provided with a bracket (3-1), an angle adjustment seat (3-2), a push-down clamping clamp (3-4), a clamping clamp assembly seat (3-3), and a workpiece pressing head (3-5); the bracket (3-1) is assembled with the base (2), and the angle adjustment seat (3-2) is mounted on the upper end of the bracket (3-1); the angle adjustment seat (3-2) is a slotted seat with an opening facing forward, and the clamping clamp assembly seat (3-3) is mounted on the outer wall of the upper end of the slotted seat. The lower outer wall of the clamping clamp is equipped with a workpiece pressing head (3-5); the clamping clamp assembly seat (3-3) is equipped with a push-down clamping clamp (3-4); the workpiece pressing head (3-5) is installed at the end of the driven arm of the push-down clamping clamp (3-4); the workpiece pressing head installed at the end of the driven arm of the push-down clamping clamp (3-4) is arranged opposite to the workpiece pressing head assembled on the lower outer wall of the angle adjustment seat (3-2), and the two workpiece pressing heads (3-5) arranged above and below are used to press and fix the front upright (1-1) or the seat tube (1-4).
3. The lithium battery stroller front frame assembly welding tooling of claim 2, wherein: The workpiece pressing head (3-5) installed at the end of the driven arm of the push-type clamping pliers (3-4) is a height-adjustable structure. The height-adjustable structure is a screw (3-4-1) that is fitted with the driven arm of the push-type clamping pliers. The workpiece pressing head (3-5) installed at the end of the driven arm is fixed to the lower end of the screw (3-4-1).
4. The lithium battery stroller front frame assembly welding tooling of claim 3, wherein: The bracket (3-1) of the workpiece positioning and clamping unit is an L-shaped bracket, with an angle adjustment seat upper end provided with an adjustment elongated hole (3-1-3) for adjusting the up and down position of the angle adjustment seat; the angle adjustment seat (3-2) is provided with a fixed part (3-2-1) and a rotating part (3-2-2), and a pin is installed between the fixed part (3-2-1) and the rotating part (3-2-2). The fixed part (3-2-1) is provided with an arc-shaped elongated hole (3-2-3), and the rotating part (3-2-2) is provided with a screw hole. The rotating part (3-2-2) and the fixed part (3-2-1) are fastened together by screws passing through the arc-shaped elongated hole (3-2-3) of the fixed part (3-2-1) and the screw hole of the rotating part (3-2-2).
5. The lithium battery stroller front frame assembly welding tooling of any one of claims 1-4, wherein: The battery retainer positioning clamping device (5) has an L-shaped positioning seat (5-2) for the battery retainer. The L-shaped positioning seat is assembled with the base (2) through the horizontal wall of the L-shaped positioning seat. A U-shaped frame is set on the upper part of the vertical wall of the L-shaped positioning seat. The outer wall of the U-shaped frame is connected to the vertical wall of the L-shaped positioning seat. A battery retainer limiting groove (5-2-1) is provided on the inner wall of the U-shaped frame. A through hole (5-2-2) matching the pressure head of the side-push clamping pliers (5-1) is provided in the battery retainer limiting groove (5-2-1). The side-push clamping pliers (5-1) are installed on the outer wall of the U-shaped frame. The driven arm passes through the U-shaped frame and the through hole (5-2-2) on the battery retainer limiting groove (5-2-1). An adjustable pressure head is provided at the end of the driven arm of the side-push clamping pliers (5-1).
6. The lithium battery stroller front frame assembly welding tooling of claim 5, wherein: The adjustable length pressure head is a screw-in side-push type clamping pliers (5-1) from the flat-head bolt (5-1-1) inside the boom.
7. The lithium battery stroller front frame assembly welding tooling of claim 6, wherein: The battery mounting base positioning and clamping device (4) has an L-shaped positioning block (4-2) which is assembled with the base (2) through the horizontal wall of the L-shaped positioning block. The vertical wall height of the L-shaped positioning block is less than the inner cavity height of the battery mounting base (1-5).
8. The lithium battery stroller front frame assembly welding tooling of claim 4, wherein: On the platform of the base (2), a workpiece positioning and clamping unit position adjustment slide (2-1), a battery mounting seat positioning block and a battery retainer positioning seat position adjustment slide (2-3), and an assembly hole (2-2) are provided; correspondingly, on the bracket (3-1) of each workpiece positioning and clamping unit in the front frame first sub-assembly positioning and clamping device (3), a first protruding slider (3-1-1) and a first elongated hole (3-1-2) that cooperate with the corresponding slide are provided; on the battery mounting seat positioning block (4-2), a second elongated hole (4-2-1) is provided; and on the battery retainer positioning seat (5-2), a second protruding slider (5-2-4) and a third elongated hole (5-2-3) that cooperate with the corresponding slide are provided.