Positioning platform for welding plastic part of automobile door panel
By combining the support base and the fixing parts, along with the flip-up welding plate and the limiting device, the shaking problem during the welding of automobile door panels is solved, the welding efficiency and stability are improved, and the welding needs of different models and angles are met.
Patent Information
- Application Number
- CN202520128490.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The irregular structure of car door panels causes them to wobble during welding, requiring manual pressing, which is labor-intensive and inefficient.
The system employs multiple support seats that fit against the curved surface of the car door panel, and uses fasteners and rotating cylinders to fix the car door panel in place. Combined with a flip-up welded plate and a limiting device, it ensures stable positioning of the door panel.
It improves welding efficiency, eliminates the need for manual pressing, ensures the stability of the door panel during welding, reduces hard impacts, and adapts to welding requirements of different models and angles.
Smart Images
Figure CN223701733U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of automobile manufacturing, in particular to a positioning platform for welding of a plastic part of an automobile door plate. BACKGROUND
[0002] Automobile accessory processing is each unit constituting the whole of automobile accessory processing and the product serving automobile accessory processing, wherein the automobile door plate is a channel for the driver and passengers to get in and out of the vehicle and isolates the interference from the outside, and to a certain extent, reduces the side impact and protects the passengers, and the automobile door plate needs to be subjected to a welding process during production and manufacturing, so as to be assembled.
[0003] During welding of the automobile door plate, the automobile door plate usually needs to be placed on a welding table to be subjected to welding processing, and due to the irregular structure of the automobile door plate, the automobile door plate will shake when being placed on the welding platform due to the instability of the structure of the automobile door plate; therefore, in order to ensure that the automobile door plate is in a stable state during welding, the automobile door plate is usually pressed manually, and the manual pressing method needs to consume additional labor cost and has low welding efficiency. CONTENT OF THE UTILITY MODEL
[0004] In order to improve the efficiency of welding of the automobile door plate and keep the automobile door plate in a stable state during welding, the application provides a positioning platform for welding of a plastic part of an automobile door plate.
[0005] The application provides a positioning platform for welding of a plastic part of an automobile door plate, which adopts the following technical scheme:
[0006] The positioning platform for welding of a plastic part of an automobile door plate comprises a welding frame and a welding plate installed on the welding frame, the welding plate is used for installing the automobile door plate to be welded, a support part for supporting the automobile door plate is arranged on the plate surface of the welding plate, and the support part comprises a plurality of support seats fixed on the welding plate, and the plurality of support seats can be attached to the arc surface of the automobile door plate.
[0007] By adopting the above technical scheme, when the automobile door plate is welded, the automobile door plate is installed on the welding plate by the worker, and the automobile door plate is supported by the plurality of support seats, the plurality of support seats can be attached to the arc surface of the automobile door plate, so that the automobile door plate can be stably supported on the support seats, and the shaking of the automobile door plate on the welding plate is avoided, thus avoiding the need for the worker to manually press the automobile door plate, and the efficiency of welding of the automobile door plate is improved.
[0008] Optionally, a plurality of fixing parts are arranged on the welding plate and close to the edge of the welding plate, the plurality of fixing parts are uniformly distributed along the edge of the automobile door plate, and the fixing part can be pressed onto the automobile door plate.
[0009] By adopting the technical scheme, the multiple sets of fixing members are arranged to fix the automobile door plate at the four peripheral edges, so as to press the automobile door plate to the welding plate, and avoid shaking of the automobile door plate during welding.
[0010] Optionally, the fixing member comprises a fixing base fixed on the welding plate and a rotating cylinder mounted on the fixing base, the fixing base is rotatably provided with a fixing rod for pressing the automobile door plate, and the rotating cylinder controls rotation of the fixing rod.
[0011] By adopting the technical scheme, during fixing of the automobile door plate, the rotating cylinder is started to control rotation of the fixing rod, and the end of the fixing rod is pressed to the automobile door plate, and the control mode of the rotating cylinder can realize quick fixing of the fixing rod and improve fixing efficiency.
[0012] Optionally, the support base is made of flexible material, and a groove and an arc surface are arranged at the end of the support base in contact with the automobile door plate.
[0013] By adopting the technical scheme, the support base made of flexible material can avoid hard collision between the automobile door plate and the support base during welding, and protect the automobile door plate; the groove and the arc surface arranged at the upper end of the support base can better support and fit the arc surface of the automobile door plate.
[0014] Optionally, the welding plate is rotatably arranged on a welding frame, the support member and the fixing member with the same structure are arranged on the other side of the plate surface of the welding plate, for fixing automobile door plates of different models, and the welding frame is provided with a rotating device for controlling rotation of the welding plate.
[0015] By adopting the technical scheme, the welding plate adopts a double-sided structure, during use, different models of automobile door plates can be installed on the welding plate and welded, and the utilization rate of the welding plate is improved; the rotating device arranged on the welding frame can control the welding plate to be flipped over to the side that needs to be used.
[0016] Optionally, the rotating device comprises a fixing block mounted on the welding frame and a rotating rod rotatably arranged on the fixing block, one end of the rotating rod away from the fixing block is connected with the welding plate, and the fixing block is provided with a limiting member for controlling rotation of the rotating rod.
[0017] By adopting the technical scheme, the welding plate and the rotating rod are fixed, so that the welding plate can rotate around the axis of the rotating rod, and after rotation, the welding plate is fixed by the limiting member, so that the position of the welding plate can be fixed, and the welding plate is prevented from rotating during welding.
[0018] Optionally, the limiting member comprises a limiting gear sleeved and fixed on the rotating rod and a limiting rod slidingly arranged on the fixed block, and the end of the limiting rod is inserted and matched in the tooth groove of the limiting gear.
[0019] By adopting the above technical scheme, the fixing mode of the limiting gear and the limiting rod can make the welding plate realize angle adjustment during control of the welding plate overturning process, so that the welding plate can be rotated to any angle position, and when welding some special welding angle positions on the automobile door plate, the welding plate can be adjusted to an angle suitable for welding, thereby adapting to more tricky welding angles and improving the welding efficiency.
[0020] Optionally, the fixed block is slidingly matched on the welding frame, and the rotating device is provided with two groups, and the two groups of rotating devices are symmetrically arranged on the two sides of the welding plate and are arranged at the middle position of the welding plate.
[0021] By adopting the above technical scheme, the two groups of rotating devices are symmetrically arranged on the two sides of the welding plate, so that the welding plate can be more stably arranged on the welding frame, and the welding plate can be prevented from shaking during the rotating process; when the welding plate is overturned, the fixed block can be controlled to slide first, so that the welding plate and the welding frame can slide out of the space for overturning, and the welding plate and the welding frame can be prevented from colliding during the overturning process.
[0022] Optionally, the rotating rod and the welding plate are detachably fixedly connected, and a connecting assembly is arranged therebetween, the connecting assembly comprises fixed plates and movable plates arranged in parallel with each other, a connecting plate perpendicular to the fixed plates and the movable plates is arranged between the fixed plates and the movable plates, the rotating rod is fixed with the connecting plate, one end of the connecting plate is fixed with the fixed plate, the movable plate is slidingly arranged on the connecting plate, the fixed plate and the movable plate are used for clamping the edge of the welding plate, and the connecting plate is provided with a clamping piece for fixing the movable plate.
[0023] By adopting the above technical scheme, the connecting assembly can be quickly fixed with the edge of the welding plate through the fixed plates and the movable plates, different welding plates can be fixed on the welding frame, the movable plate is slidingly arranged on the connecting plate, the distance between the movable plate and the fixed plate can be dynamically adjusted, different thicknesses of the welding plates can be clamped and fixed, and when the welding plate is installed, the welding plate can be first overlapped on the fixed plate, and then the movable plate is pressed onto the welding plate, so that the installation and fixation are facilitated.
[0024] Optionally, the connecting plate passes through the movable plate, the clamping piece comprises a movable ring fixed on the movable plate and sleeved on the connecting plate, a connecting hole is formed in the length direction of the connecting plate, a connecting bolt is threadedly connected to the connecting plate and penetrates into the connecting hole, the length direction of the connecting bolt is the same as that of the connecting plate, and the end portion of the connecting bolt in the connecting hole is rotationally connected with a clamping plate capable of being pressed onto the upper end of the movable ring.
[0025] By adopting the above technical scheme, when the movable plate and the fixed plate clamp the welding plate, the clamping piece clamps the welding plate, the connecting bolt is rotated, the clamping plate is turned out of the connecting hole, and the clamping plate is pressed onto the movable ring, so that the welding plate is fixed, and loosening between the movable plate and the connecting plate during welding is avoided.
[0026] In summary, the present application has at least one of the following beneficial technical effects:
[0027] 1. The welding plate and the welding frame can be clamped and fixed by the limiting piece after the welding plate is turned over, so that the welding plate is prevented from continuing to rotate. In addition, the fixing mode of the limiting rod and the limiting gear can adjust the angle of the welding plate, so that the welding plate can be turned over and inclined to any angle. When facing some difficult welding angle positions, the welding plate can be adjusted in angle, so that the welding angle is inclined to a suitable position for welding.
[0028] 2. The fixed block is slidably arranged on the welding frame, so that the welding plate can slide out of the space for turning over on the welding frame when the welding plate is turned over, and the collision between the welding plate and the welding frame is prevented. BRIEF DESCRIPTION OF DRAWINGS
[0029] Figure 1 is a schematic view of the overall structure of the embodiment of the present application.
[0030] Figure 2 is a schematic view of the embodiment of the present application.
[0031] Figure 3 is a schematic view of the embodiment of the present application.
[0032] Figure 4 is a schematic view of the embodiment of the present application.
[0033] Figure 5 is a schematic view of the embodiment of the present application.
[0034] Explanation of reference signs: 1, welding frame; 11, sliding groove; 2, welding plate; 21, support seat; 22, positioning groove; 23, plug-in hole; 3, fixing piece; 31, fixing seat; 32, rotating air cylinder; 33, fixed rod; 4, rotating device; 41, fixed block; 411, sliding block; 412, synchronization plate; 413, fixed bolt; 42, rotating rod; 421, control rod; 43, limiting piece; 431, limiting gear; 432, limiting rod; 433, limiting spring; 44, connecting assembly; 441, fixed plate; 442, movable plate; 443, connecting plate; 444, plug-in block; 45, clamping piece; 451, movable ring; 452, connecting hole; 453, connecting bolt; 454, clamping plate; 455, clamping groove; 5, stabilizing assembly; 51, stabilizing block; 52, stabilizing rod; 53, stabilizing connecting block; 54, stabilizing spring. DETAILED DESCRIPTION
[0035] The following will be described in detail in combination with the accompanying drawings. Figures 1-5 The application is further described in detail.
[0036] The embodiment of the application discloses a positioning platform for welding of automobile door plate plastic parts.
[0037] Reference Figure 1 The positioning platform for welding of automobile door plate plastic parts comprises a welding frame 1 arranged at a welding station and in a frame structure, a rectangular welding plate 2 is arranged at the upper end of the welding frame 1, the welding plate 2 is used for placing automobile door plates to be welded and fixed, support pieces for supporting the automobile door plates are arranged on the surface of the welding plate 2, the automobile door plates to be welded are placed on the support pieces during welding of the automobile door plates, and the automobile door plates are kept in a stable state, so that shaking of the automobile door plates during welding is avoided.
[0038] The support pieces comprise a plurality of support seats 21, the support seats 21 are rectangular blocks, the plurality of support blocks are fixedly arranged on the welding plate 2, recesses and arc surfaces are arranged at the upper end of the support seat 21 and are matched with the arc surface of the automobile door plate, so that the upper end of the plurality of support seats 21 can be matched with the surface of the automobile door plate, and the automobile door plate can be stably supported on the plurality of support seats 21; the plurality of support seats 21 are made of flexible materials, so that hard collision between the automobile door plate and the support seats 21 during welding is avoided, and the automobile door plate is protected. The same support pieces are arranged on the other surface of the welding plate 2, and the plurality of support seats 21 are used for supporting automobile door plates to be welded in different specifications.
[0039] Reference Figure 1 and Figure 2A plurality of fixing members 3 are arranged on both sides of the welding plate 2, and the fixing members 3 are evenly distributed along the edges of the automobile door plate to be welded. The fixing members 3 are used to press the edges of the automobile door plate. The fixing member 3 comprises a fixing seat 31 fixed vertically on the welding plate 2, a rotating air cylinder 32 vertically arranged on the fixing seat 31, and a fixing rod 33 rotatably arranged on the upper end of the fixing seat 31. The rotating air cylinder 32 is used to control the rotation of the fixing rod 33, so that the end of the rotating rod 42 away from the fixing seat 31 can be rotated and pressed onto the automobile door plate, thereby fixing the automobile door plate and preventing the automobile door plate from moving during welding. The automobile door plate can be firmly installed on the welding plate 2.
[0040] With reference to Figure 1 and Figure 3 The welding plate 2 is rotatably arranged on the welding frame 1, and the welding frame 1 is provided with a rotating device 4 for controlling the rotation of the welding plate 2. The rotating device 4 comprises a fixing block 41 arranged on the welding frame 1, and a rotating rod 42 horizontally arranged on the fixing block 41. The rotating rod 42 is rotatably arranged on the fixing block 41. One end of the rotating rod 42 is connected to the middle of the side edge of the welding plate 2. The end of the rotating rod 42 away from the welding plate 2 is provided with a control rod 421 for facilitating the rotation of the rotating rod 42. The control rod 421 is perpendicular to the rotating rod 42, so that the rotation of the rotating rod 42 can be more conveniently and labor-saving controlled by the worker. In addition, the length direction of the control rod 421 is the same as the length direction of the welding plate 2. When the welding plate 2 is flipped to the other side, when the control rod 421 is rotated by half a circle and is in a horizontal state, the welding plate 2 is correctly flipped to the other side, which is convenient for the worker to observe whether the welding plate 2 is rotated in place.
[0041] The rotating device 4 further comprises a limiting member 43 arranged on the fixing block 41. The limiting member 43 is used to control whether the welding plate 2 rotates. The limiting member 43 comprises a limiting gear 431 sleeved and fixed on the rotating rod 42. The limiting gear 431 is located on the side of the fixing block 41 away from the welding plate 2. A limiting rod 432 is vertically and slidably arranged on the fixing block 41. The lower end of the limiting rod 432 can be inserted and fitted into the tooth groove of the limiting gear 431. After the rotating rod 42 is rotated, the lower end of the limiting rod 432 is inserted into the limiting gear 431 to avoid the welding plate 2 from continuing to rotate during welding. A limiting spring 433 is sleeved and fixed on the limiting rod 432. The upper end of the limiting spring 433 is fixed to the upper end of the limiting rod 432, and the lower end of the limiting spring 433 is fixed to the fixing block 41. In the initial state, the limiting spring 433 is in an elongated state, so that the end of the limiting rod 432 can be tightly inserted into the limiting gear 431 to avoid the end of the limiting rod 432 from being detached from the tooth groove of the limiting gear 431 during welding.
[0042] With reference toFigure 1 and Figure 3 The fixed block 41 on the two rotating devices 4 is slidingly arranged on the welding frame 1, so that the welding plate 2 can slide on the welding frame 1. When the gear of the welding plate 2 is large, the fixed block 41 is driven to slide, and the welding plate 2 is driven to slide, so that the welding plate 2 with large size can normally rotate on the welding frame 1, and collision during rotation is avoided. A sliding groove 11 is formed on the welding frame 1, and a sliding block 411 is fixed on the fixed block 41. The sliding block 411 is slidingly matched in the sliding groove 11. The sliding groove 11 and the sliding block 411 are in T-shaped structure, so that the fixed block 41 is prevented from sliding out of the welding frame 1 during sliding. A synchronous plate 412 is fixed on one side of the fixed block 41. The synchronous plate 412 is slidingly arranged on the welding frame 1. A fixing bolt 413 is threadedly connected to the synchronous plate 412. The end of the fixing bolt 413 abuts against the welding frame 1. After the welding plate 2 is slid on the welding frame 1, the fixing bolt 413 is rotated, and the fixed block 41 is fixed on the welding frame 1, so that the welding plate 2 is prevented from moving during welding.
[0043] Referring to Figure 1 , Figure 3 and Figure 4The rotating device 4 further comprises a connecting assembly 44 arranged between the rotating rod 42 and the side edge of the welding plate 2, and the rotating rod 42 and the welding plate 2 are detachably fixedly connected through the connecting assembly 44. The connecting assembly 44 comprises a fixed plate 441 and a movable plate 442 arranged in parallel with each other. A connecting plate 443 is arranged at one end of the fixed plate 441 and the movable plate 442 close to the rotating rod 42. The connecting plate 443 is perpendicular to the fixed plate 441 and the movable plate 442. The rotating rod 42 is fixedly connected to the connecting plate 443. The lower end of the connecting plate 443 is fixed to the fixed plate 441. The connecting plate 443 passes through the movable plate 442 upwards, and the connecting plate 443 and the movable plate 442 are slidingly connected, so that the movable plate 442 can slide along the connecting plate 443, thereby facilitating the adjustment of the distance between the fixed plate 441 and the movable plate 442. When the welding plate 2 is installed, the side of the welding plate 2 is first overlapped on the fixed plate 441, and then the movable plate 442 is installed on the connecting plate 443 and is pressed against the welding plate 2. The fixed plate 441 and the movable plate 442 are arranged relatively movably, and can clamp the welding plate 2 with different thicknesses. Positioning grooves 22 are arranged on the upper and lower surfaces of the welding plate 2 close to the side edge. When the welding plate 2 is installed, the fixed plate 441 and the movable plate 442 can be installed and matched in the corresponding positioning grooves 22. Inserting blocks 444 are fixedly arranged at opposite positions on the inner side surfaces of the fixed plate 441 and the movable plate 442. Corresponding inserting holes 23 are arranged on the welding plate 2. When the welding plate 2 is installed on the fixed plate 441, the inserting blocks 444 on the fixed plate 441 and the movable plate 442 can be inserted into the inserting holes 23, so that the welding plate 2 is more firmly connected to the fixed plate 441 and the movable plate 442, and the welding plate 2 is prevented from being separated from the fixed plate 441 and the movable plate 442.
[0044] A clamping piece 45 is arranged on the upper end of the connecting plate 443 and acts on the movable plate 442. When the movable plate 442 is installed, the clamping piece 45 can fix the movable plate 442 on the connecting plate 443, so that the fixed plate 441 and the movable plate 442 can clamp the welding plate 2. The clamping piece 45 comprises a movable ring 451 which is sleeved on the connecting plate 443 and located above the movable plate 442. The lower end of the movable ring 451 is fixed with the movable plate 442. A connecting hole 452 is formed in the connecting plate 443 and extends along the length direction of the connecting plate 443. A connecting bolt 453 is threadedly connected to the upper end of the connecting plate 443. The length direction of the connecting bolt 453 is the same as that of the connecting hole 452. The lower end of the connecting bolt 453 penetrates into the connecting hole 452. A clamping plate 454 is rotatably arranged at the lower end of the connecting bolt 453 and located in the connecting hole 452. The clamping plate 454 can rotate in the connecting hole 452. The width of the clamping plate 454 and the diameter of the connecting bolt 453 are both smaller than the thickness of the connecting plate 443, so that the movable ring 451 can be sleeved on the connecting plate 443 without affecting the installation of the movable plate 442 on the connecting plate 443. When the movable plate 442 is installed on the connecting plate 443, the connecting bolt 453 is rotated, so that the length direction of the clamping plate 454 is perpendicular to the movable plate 442. The clamping plate 454 is pressed against the upper end of the movable ring 451. The connecting bolt 453 is further rotated, so that the clamping plate 454 is pressed against the movable ring 451, thereby clamping the movable plate 442 to the welding plate 2. A clamping groove 455 is formed in the upper end of the movable ring 451. A clamping rod can be rotatably clamped in the clamping groove 455, so that the clamping plate 454 does not separate from the upper end of the movable ring 451 when the clamping plate 454 is pressed against the movable ring 451.
[0045] With reference to Figure 1 and Figure 5 A plurality of stabilizing assemblies 5 are slidably arranged on the welding frame 1. The plurality of stabilizing assemblies 5 are symmetrically arranged on the two sides of the welding plate 2. The stabilizing assembly 5 comprises a stabilizing block 51 which is slidably arranged on the welding frame 1 and has the same sliding structure as the fixed block 41. A stabilizing rod 52 is horizontally slidably arranged on the stabilizing block 51. A U-shaped stabilizing connecting block 53 is fixed to the end of the stabilizing rod 52 which is close to the welding plate 2. When the welding plate 2 is turned over, the stabilizing connecting block 53 can be inserted into the side edge of the welding plate 2, thereby providing stable support for the welding plate 2 and preventing the welding plate 2 from turning over during the welding process. A stabilizing spring 54 is sleeved on the stabilizing rod 52 and located on the side of the stabilizing block 51 which is away from the welding plate 2. One end of the stabilizing spring 54 is fixed to the end of the stabilizing rod 52, and the other end is fixed to the stabilizing block 51. Under the action of the stabilizing spring 54, the stabilizing rod 52 always moves towards the welding plate 2, and the stabilizing connecting block 53 is inserted into the welding plate 2.
[0046] The implementation principle of the positioning platform for welding of the plastic part of the automobile door panel is as follows: in the welding process of the automobile door panel, the welding plate 2 can be installed on the welding frame 1, the rotating device 4 is arranged, the welding plate 2 can rotate on the welding frame 1, the support on the two sides of the welding plate 2 is convenient to use, the automobile door panel to be welded can be installed on the support seat 21, and the automobile door panel is fixed through the fixing piece 3 arranged on the welding plate 2.
[0047] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A positioning platform for welding of plastic parts of an automobile door panel, characterized in that: The utility model provides a welding frame (1) and welding plate (2) are installed on the welding frame (1), the welding plate (2) is used to install the automobile door plate to be welded, the support of the welding plate (2) is provided with the support for supporting the automobile door plate, the support includes a plurality of support seat (21) fixed on the welding plate (2), and a plurality of support seat (21) can be attached with the arc surface of automobile door plate.
2. The positioning platform for welding plastic parts of an automobile door panel according to claim 1, characterized in that: The welding plate (2) is provided with a plurality of sets of fixing parts (3) on the edge of the welding plate (2), and the plurality of sets of fixing parts (3) are uniformly distributed along the edge of the automobile door plate, and the fixing part (3) can be pressed to the automobile door plate.
3. The positioning platform for welding plastic parts of an automobile door panel according to claim 2, characterized in that: The fixing part (3) includes a fixing seat (31) fixed on the welding plate (2) and a rotating air cylinder (32) installed on the fixing seat (31), the fixing seat (31) is provided with a fixed rod (33) rotatingly arranged on the fixing seat (31) and pressing the automobile door plate, and the rotating air cylinder (32) controls the rotation of the fixed rod (33).
4. The positioning platform for welding plastic parts of an automobile door panel according to claim 1, wherein: The support seat (21) is made of flexible material, and the end of the support seat (21) in contact with the automobile door plate is provided with a groove and an arc surface.
5. The positioning platform for welding plastic parts of an automobile door panel according to claim 1, wherein: The welding plate (2) is rotatably arranged on the welding frame (1), and the same structure of the support and the fixing part (3) is arranged on the other side of the welding plate (2), which is used for fixing different models of automobile door plates, and the welding frame (1) is provided with a rotating device (4) for controlling the rotation of the welding plate (2).
6. The positioning platform for welding plastic parts of an automobile door panel according to claim 5, characterized in that: The rotating device (4) includes a fixed block (41) installed on the welding frame (1) and a rotating rod (42) rotatably arranged on the fixed block (41), one end of the rotating rod (42) away from the fixed block (41) is connected with the welding plate (2), and the fixed block (41) is provided with a limiting part (43) for controlling the rotation of the rotating rod (42).
7. The positioning platform for welding of plastic parts of automobile door panel according to claim 6, characterized in that: The limiting part (43) includes a limiting gear (431) sleeved and fixed on the rotating rod (42) and a limiting rod (432) slidingly arranged on the fixed block (41), and the end of the limiting rod (432) is inserted and matched in the tooth groove of the limiting gear (431).
8. The positioning platform for welding plastic parts of an automobile door panel according to claim 6, characterized in that: The fixed block (41) is slidingly matched on the welding frame (1), and the rotating device (4) is provided with two sets, and the two sets of rotating devices (4) are symmetrically arranged on the two sides of the welding plate (2) and are arranged at the middle position of the welding plate (2).
9. The positioning platform for welding plastic parts of an automobile door panel according to claim 6, characterized in that: The rotating rod (42) and the welding plate (2) are detachably fixedly connected, and a connecting assembly (44) is arranged between the rotating rod (42) and the welding plate (2), the connecting assembly (44) includes a fixed plate (441) and a movable plate (442) arranged in parallel with each other, a connecting plate (443) perpendicular to the fixed plate (441) and the movable plate (442) is arranged between the fixed plate (441) and the movable plate (442), the rotating rod (42) is fixed with the connecting plate (443), one end of the connecting plate (443) is fixed with the fixed plate (441), the movable plate (442) is slidingly arranged on the connecting plate (443), the fixed plate (441) and the movable plate (442) are used for clamping the edge of the welding plate (2), and the connecting plate (443) is provided with a clamping part (45) for fixing the movable plate (442).
10. The positioning platform for welding of plastic parts of an automobile door panel according to claim 9, wherein: The connecting plate (443) passes through the movable plate (442), the clamping part (45) comprises a movable ring (451) fixed on the movable plate (442) and sleeved on the connecting plate (443), a connecting hole (452) is formed in the length direction of the connecting plate (443), a connecting bolt (453) is threadedly connected on the connecting plate (443) and penetrates into the connecting hole (452), the length direction of the connecting bolt (453) is the same as that of the connecting plate (443), and the end portion of the connecting bolt (453) located in the connecting hole (452) is rotationally connected with a clamping plate (454), and the clamping plate (454) can be pressed onto the upper end of the movable ring (451).