Movable positioning new energy battery box welding clamp

Abstract

The utility model discloses a movable positioning new energy battery box body welding clamp which comprises a base plate, a circle of frame clamping device is installed on the base plate, and the frame clamping device comprises at least four frame downward pressing air cylinders and at least four frame side pressing air cylinders. At least one pair of movable positioning mechanisms are oppositely arranged on the outer sides of the frame clamping devices, each movable positioning mechanism comprises a sliding rail facing the corresponding frame clamping device, and a positioning pin moving along the sliding rail is installed on the sliding rail. The battery box has the beneficial effects that the positioning pins are inwards contracted along the sliding rails, so that the frame is effectively prevented from being twisted, the battery box is more conveniently taken out, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery box technology, and in particular to a movable positioning welding fixture for new energy battery boxes. Background Technology

[0002] Against the backdrop of the country's vigorous development of new energy vehicles, the battery box, as part of its industrial chain, plays a key role. Therefore, battery box fixtures have become an important tooling for assembling battery boxes.

[0003] To ensure the accuracy and precision of battery box assembly and welding, locating pins are typically used to position the battery box frame, ensuring alignment between the frames and thus guaranteeing the accuracy and precision of the welding, thereby improving the quality of the finished battery box. However, during the welding of the battery box frame, the frame may deform and shrink inward due to heat, leading to difficulties in component removal and reducing production efficiency.

[0004] After the product is assembled, the positioning pins are fixed at the time. As the assembled frame cools, it shrinks inward, causing [damage / twisting]. After the product is assembled, the positioning pins can move freely in the Y direction (though Y-axis movement is limited to a certain range). The positioning block is fixed on the outside of the product, and the cylinder is on the inside. The positioning pins can move, but this still ensures the normal use of the assembled frame. After welding, the product shrinks inward during cooling. After the clamp is opened, the positioning pins shrink inward, following the product's movement, effectively preventing the profile from twisting, making it easier to remove the product, and improving work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a movable positioning welding fixture for new energy battery boxes, which can retract inward synchronously with the frame after the frame is welded, making it easier to remove the finished product, reducing collision damage to the finished product, improving the efficiency of part removal, reducing the scrap rate of finished products, and reducing the cycle time of the process, thereby achieving the goal of cost reduction.

[0006] The active positioning welding fixture for new energy battery box includes a base plate, the key feature of which is that a ring of frame clamping device is installed on the base plate, the frame clamping device including at least four frame downward pressing cylinders and at least four frame side pressing cylinders.

[0007] At least one pair of movable positioning mechanisms are provided opposite to each other on the outer side of the frame clamping device. The movable positioning mechanism includes a slide rail facing the frame clamping device, and a positioning pin is installed on the slide rail that moves along the slide rail.

[0008] Positioning pins pass through positioning holes on the battery box frame to position the frame. A downward and side-pressure cylinder applies downward and side pressure to the battery box frame, respectively, ensuring a stable and tight fit and completing the preparation for welding. After welding, the battery box frame retracts inward during cooling. After the clamp is opened, the positioning pins retract inward along the slide rail, effectively preventing frame twisting and facilitating easier removal of the battery box, thus improving work efficiency.

[0009] Furthermore, a mounting seat that moves along the slide rail is installed on the slide rail, and the positioning pin is fixedly installed on the mounting seat;

[0010] Both ends of the slide rail are equipped with positioning pin limit plates, and spring plungers are fixedly installed on the positioning pin limit plates. The spring plungers face the mounting base and are in contact with the mounting base.

[0011] The positioning pin limit plate can limit the positioning pin and prevent it from falling off the slide rail. After the battery box is removed, the spring plunger can push the positioning pin to return to its original position.

[0012] Furthermore, each of the frame pressing cylinders is equipped with a frame pressing component, and a frame support block is installed below each frame pressing component; each of the frame side pressing cylinders is equipped with a frame side pressing component, and a frame limiting block is installed directly opposite each frame side pressing component.

[0013] The frame support block supports the frame of the battery box, and the frame pressing component applies downward pressure to the frame to prevent longitudinal displacement of the frame during the welding process;

[0014] The frame limiting block positions and laterally limits the frame of the battery box, and the frame side pressing component applies lateral pressure to the frame to prevent lateral displacement of the frame during the welding process.

[0015] Furthermore, a crossbeam clamping device is installed in the middle of the frame clamping device, which includes at least one crossbeam downward pressing cylinder and at least one crossbeam side pressing cylinder.

[0016] Furthermore, each of the beam pressing cylinders is equipped with a beam frame pressing component, and a beam support block is installed below each beam frame pressing component; each of the beam side pressing cylinders is equipped with a beam frame side pressing component, and a beam limiting block is installed directly opposite each beam frame side pressing component.

[0017] The crossbeam support block supports the crossbeam of the battery box, and the crossbeam pressing component applies downward pressure to the crossbeam to prevent longitudinal displacement of the crossbeam during the welding process.

[0018] The crossbeam limiting block positions and limits the crossbeam of the battery box, and the crossbeam side pressing component applies lateral pressure to the crossbeam to prevent lateral displacement of the crossbeam during the welding process.

[0019] Furthermore, at least four edge positioning detection sensors and at least one beam positioning detection sensor are mounted on the substrate, with the edge positioning detection sensors close to the edge clamping device and the beam positioning detection sensor close to the beam clamping device.

[0020] Beneficial effects: This utility model uses a frame-down pressure cylinder and a frame-side pressure cylinder to limit the battery box frame in multiple directions, ensuring stable and tight splicing of the battery box frame and preventing frame displacement during welding. Simultaneously, after the frame-down pressure cylinder and the frame-side pressure cylinder are opened, the positioning pin can retract inward synchronously with the frame, thereby facilitating the removal of the finished product, reducing collision damage, improving part removal efficiency, reducing the scrap rate, shortening the process cycle, and achieving the goal of cost reduction. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the first clamping mechanism;

[0023] Figure 3 This is a schematic diagram of the second clamping mechanism;

[0024] Figure 4 This is a schematic diagram of the third clamping mechanism;

[0025] Figure 5 This is a schematic diagram of the fourth clamping mechanism;

[0026] Figure 6 This is a schematic diagram of the fifth clamping mechanism;

[0027] Figure 7 This is a schematic diagram of the sixth clamping mechanism;

[0028] Figure 8 This is a schematic diagram of the active positioning device;

[0029] Figure 9 This is a top view of the present invention;

[0030] Figure 10 This is a schematic diagram illustrating the use of this utility model. Detailed Implementation

[0031] The specific embodiments and working principle of this utility model will be further described in detail below with reference to the accompanying drawings.

[0032] like Figure 1As shown, the active positioning new energy battery box welding fixture includes a base plate 1, on which a first clamping mechanism 2 and a second clamping mechanism 3 are mounted near the front end of the base plate 1, and a fifth clamping mechanism 6 and a sixth clamping mechanism 7 are mounted near the rear end of the base plate 1.

[0033] The first clamping mechanism 2 and the fifth clamping mechanism 6 are located on the left side of the substrate, and the second clamping mechanism 3 and the sixth clamping mechanism 7 are located on the right side of the substrate.

[0034] A third clamping mechanism 4 is installed between the first clamping mechanism 2 and the fifth clamping mechanism 6, and a fourth clamping mechanism 5 is installed between the second clamping mechanism 3 and the sixth clamping mechanism 7.

[0035] like Figure 1 , 2 As shown in Figures 9 and 1, the first clamping mechanism 2 includes a first side-pressing cylinder 2a, a first side-pressing cylinder 2b, a second side-pressing cylinder 2d, a third side-pressing cylinder 2e, and a second side-pressing cylinder 2c.

[0036] The first frame side-pressing cylinder 2a and the second frame downward-pressing cylinder 2c are close to the left side of the substrate 1, and the piston rod of the first frame side-pressing cylinder 2a and the pressure arm of the second frame downward-pressing cylinder 2c are both facing the right side of the substrate 1. The piston rod end of the first side-pressing cylinder is equipped with a first frame side-pressing component, and the pressure arm of the second frame downward-pressing cylinder 2c is connected to the second frame downward-pressing component.

[0037] The first frame pressing cylinder 2b is close to the front end of the substrate 1, the pressing arm of the first frame pressing cylinder 2b faces the rear end of the substrate 1, and the pressing arm of the first frame pressing cylinder 2b is equipped with a first frame pressing component.

[0038] The second frame side pressure cylinder 2d is directly opposite the first frame downward pressure cylinder 2b, and the piston rod of the second frame side pressure cylinder 2d faces the first frame downward pressure cylinder 2b, and the end of the piston rod of the second frame side pressure cylinder 2d is equipped with a second frame side pressure component.

[0039] The third frame side pressure cylinder 2e is located between the second frame down pressure cylinder 2c and the second frame side pressure cylinder 2d, and the pressure arm of the third frame side pressure cylinder 2e faces the right side of the substrate 1, and the pressure arm of the third frame side pressure cylinder 2e is the third frame side pressure component.

[0040] like Figure 1 , 3 As shown in Figures 9 and 1, the second clamping mechanism 3 includes a third frame pressing cylinder 3a, a push rod 3b, a fourth frame side pressing cylinder 3c, a fourth frame pressing cylinder 3d, a fifth frame pressing cylinder 3e, a fifth frame side pressing cylinder 3f, a sixth frame side pressing cylinder 3g, a sixth frame pressing cylinder 3h, and a seventh frame side pressing cylinder 3i.

[0041] Among them, the third frame pressing cylinder 3a, the push rod 3b, the fourth frame side pressing cylinder 3c, and the fourth frame pressing cylinder 3d are close to the front end of the substrate 1, and the pressing arm of the third frame pressing cylinder 3a, the push rod 3b, the piston rod of the fourth frame side pressing cylinder 3c, and the pressing arm of the fourth frame pressing cylinder 3d are all facing the rear end of the substrate 1. The pressing arm of the third frame pressing cylinder 3a is equipped with a third frame pressing component, the piston rod end of the fourth frame side pressing cylinder 3c is equipped with a fourth frame side pressing component, and the pressing arm of the fourth frame pressing cylinder 3d is equipped with a fourth frame pressing component.

[0042] The fifth frame pressing cylinder 3e is close to the right side of the substrate 1, and the pressing arm of the fifth frame pressing cylinder 3e faces the left side of the substrate 1, and the pressing arm of the fifth frame pressing cylinder 3e is equipped with a fifth frame pressing component.

[0043] The fifth frame side pressure cylinder 3f is directly opposite the fourth frame downward pressure cylinder 3d, and the piston rod of the fifth frame side pressure cylinder 3f faces the right side of the base plate 1, and the end of the piston rod of the fifth frame side pressure cylinder 3f is equipped with a fifth frame side pressure component.

[0044] The sixth frame side pressure cylinder 3g is directly opposite the fourth frame side pressure cylinder 3c, and the piston rod of the sixth frame side pressure cylinder 3g faces the fourth frame side pressure cylinder 3c, and the end of the piston rod of the sixth frame side pressure cylinder 3g is equipped with a sixth frame side pressure component.

[0045] The sixth frame pressing cylinder 3h is located between the sixth frame side pressing cylinder 3g and the seventh frame side pressing cylinder 3i, and the pressing arm of the sixth frame pressing cylinder 3h faces the fourth frame pressing cylinder 3d, and the pressing arm of the sixth frame pressing cylinder 3h is equipped with the sixth frame pressing component.

[0046] The seventh frame side pressure cylinder 3i is directly opposite the third frame downward pressure cylinder 3a, and the piston rod of the seventh frame side pressure cylinder 3i faces the third frame downward pressure cylinder 3a, and the end of the piston rod of the seventh frame side pressure cylinder 3i is equipped with a seventh frame side pressure component.

[0047] An eighth frame side pressure cylinder 3j is installed between the fourth frame side pressure cylinder 3c and the sixth frame side pressure cylinder 3g. The pressure arm of the eighth frame side pressure cylinder 3j faces the right side of the substrate 1, and the pressure arm of the eighth frame side pressure cylinder 3j is the eighth frame side pressure component.

[0048] like Figure 1 , 4 As shown in Figures 9 and 1, the third clamping mechanism 4 includes a seventh frame pressing cylinder 4a, a ninth frame side pressing cylinder 4b, a first crossbeam pressing cylinder 4c, a first crossbeam side pressing cylinder 4d, a tenth frame side pressing cylinder 4e, and an eleventh frame side pressing cylinder 4f, which are installed in clockwise order.

[0049] Among them, the seventh frame pressing cylinder 4a and the eleventh frame side pressing cylinder 4f are close to the left side of the substrate 1, and the pressing arm of the seventh frame pressing cylinder 4a and the piston rod of the eleventh frame side pressing cylinder 4f are both facing the right side of the substrate 1. The pressing arm of the seventh frame pressing cylinder 4a is equipped with a seventh frame pressing component, and the piston rod end of the eleventh frame side pressing cylinder 4f is equipped with an eleventh frame side pressing component.

[0050] The ninth frame side pressure cylinder 4b and the tenth frame side pressure cylinder 4e are located on both sides of the seventh frame pressing component, and the pressing arm of the ninth frame side pressure cylinder 4b and the pressing arm of the tenth frame side pressure cylinder 4e are both facing the right side of the substrate 1. The pressing arm of the ninth frame side pressure cylinder 4b is the ninth frame side pressure component, and the pressing arm of the tenth frame side pressure cylinder 4e is the tenth frame side pressure component.

[0051] The first crossbeam downward pressing cylinder 4c and the first crossbeam side pressing cylinder 4d are arranged opposite each other. The pressing arm of the first crossbeam downward pressing cylinder 4c faces the rear end of the base plate 1, and the piston rod of the first crossbeam side pressing cylinder 4d faces the first crossbeam downward pressing cylinder 4c. The pressing arm of the first crossbeam downward pressing cylinder 4c is equipped with a first crossbeam downward pressing component, and the piston rod end of the first crossbeam side pressing cylinder 4d is equipped with a first crossbeam side pressing component.

[0052] like Figure 1 , 5 As shown in Figures 9 and 1, the fourth clamping mechanism 5 includes a second crossbeam pressing cylinder 5a, a twelfth side frame pressing cylinder 5b, an eighth side frame pressing cylinder 5c, a thirteenth side frame pressing cylinder 5d, and a second crossbeam pressing cylinder 5e, which are installed in clockwise order.

[0053] The eighth frame pressing cylinder 5c is close to the right side of the substrate 1, and the pressing arm of the eighth frame pressing cylinder 5c faces the left side of the substrate 1. The pressing arm of the eighth frame pressing cylinder 5c is equipped with an eighth frame pressing component.

[0054] The twelfth frame side pressure cylinder 5b and the thirteenth frame side pressure cylinder 5d are located on both sides of the eighth frame pressing component, and the piston rods of the twelfth frame side pressure cylinder 5b and the thirteenth frame side pressure cylinder 5d are both facing the right side of the substrate 1. The twelfth frame side pressure component is installed at the end of the piston rod of the twelfth frame side pressure cylinder 5b, and the thirteenth frame side pressure component is installed at the end of the piston rod of the thirteenth frame side pressure cylinder 5d.

[0055] The second crossbeam downward pressing cylinder 5a and the second crossbeam side pressing cylinder 5e are arranged opposite each other. The pressing arm of the second crossbeam downward pressing cylinder 5a faces the rear end of the base plate 1, and the piston rod of the second crossbeam side pressing cylinder 5e faces the second crossbeam downward pressing cylinder 5a. The pressing arm of the second crossbeam downward pressing cylinder 5a is equipped with a second crossbeam downward pressing component, and the piston rod end of the second crossbeam side pressing cylinder 5e is equipped with a second crossbeam side pressing component.

[0056] like Figure 1 , 6 As shown in Figures 9 and 1, the fifth clamping mechanism 6 includes a fourteenth frame side-pressing cylinder 6a, a twelfth frame downward-pressing cylinder 6b, and an eighteenth frame side-pressing cylinder 6c, which are sequentially installed from the front end of the substrate 1 to the rear end of the substrate 1. The fourteenth frame side-pressing cylinder 6a, the twelfth frame downward-pressing cylinder 6b, and the eighteenth frame side-pressing cylinder 6c are close to the left side of the substrate 1. The piston rod of the fourteenth frame side-pressing cylinder 6a, the pressure arm of the twelfth frame downward-pressing cylinder 6b, and the piston rod of the eighteenth frame side-pressing cylinder 6c all face the right side of the substrate 1. The piston rod end of the fourteenth frame side-pressing cylinder 6a is equipped with a fourteenth frame side-pressing component, the pressure arm of the twelfth frame downward-pressing cylinder 6b is equipped with a twelfth frame downward-pressing component, and the piston rod end of the eighteenth frame side-pressing cylinder 6c is equipped with an eighteenth frame side-pressing component.

[0057] The fifth clamping mechanism 6 further includes a seventeenth frame side-pressing cylinder 6e, a tenth frame downward-pressing cylinder 6f, a sixteenth frame side-pressing cylinder 6g, and a ninth frame downward-pressing cylinder 6h, which are installed sequentially from the left side of the substrate 1 to the right side of the substrate 1. The seventeenth frame side-pressing cylinder 6e, the tenth frame downward-pressing cylinder 6f, the sixteenth frame side-pressing cylinder 6g, and the ninth frame downward-pressing cylinder 6h are close to the rear end of the substrate 1. The piston rod of the seventeenth frame side-pressing cylinder 6e, the pressure arm of the tenth frame downward-pressing cylinder 6f, the piston rod of the sixteenth frame side-pressing cylinder 6g, and the pressure arm of the ninth frame downward-pressing cylinder 6h all face the front end of the substrate 1. The piston rod end of the seventeenth frame side-pressing cylinder 6e is equipped with a seventeenth frame side-pressing component, the pressure arm of the tenth frame downward-pressing cylinder 6f is equipped with a tenth frame downward-pressing component, the piston rod end of the sixteenth frame side-pressing cylinder 6g is equipped with a sixteenth frame side-pressing component, and the pressure arm of the ninth frame downward-pressing cylinder 6h is equipped with a ninth frame downward-pressing component.

[0058] The right side of the fourteenth frame side pressure cylinder 6a is equipped with the fifteenth frame side pressure cylinder 6i, and the pressure arm of the fifteenth frame side pressure cylinder 6i faces the right side of the substrate 1, and the pressure arm of the fifteenth frame side pressure cylinder 6i is the fifteenth frame side pressure component.

[0059] An eleventh-frame pressing cylinder 6d is installed between the eighteenth-frame side pressing cylinder 6c and the seventeenth-frame side pressing cylinder 6e. The pressure arm of the eleventh-frame pressing cylinder 6d faces the fifteenth-frame side pressing cylinder 6i, and the pressure arm of the eleventh-frame pressing cylinder 6d is equipped with an eleventh-frame pressing component.

[0060] like Figure 1 , 7 As shown in Figures 9 and 1, the sixth clamping mechanism 7 includes a thirteenth frame pressing cylinder 7b near the right side of the substrate 1, and the pressing arm of the thirteenth frame pressing cylinder 7b faces the left side of the substrate 1, and the pressing arm of the thirteenth frame pressing cylinder 7b is equipped with a thirteenth frame pressing component.

[0061] The nineteenth frame side pressure cylinder 7a is installed on the upper left of the thirteenth frame downward pressure cylinder 7b, and the piston rod of the nineteenth frame side pressure cylinder 7a faces the right side of the substrate 1, and the nineteenth frame side pressure component is installed at the end of the piston rod of the nineteenth frame side pressure cylinder 7a.

[0062] The sixth clamping mechanism 7 further includes a twentieth frame side-pressing cylinder 7c and a fourteenth frame downward-pressing cylinder 7d near the rear end of the substrate 1. The fourteenth frame downward-pressing cylinder 7d is near the fifth clamping mechanism 6, and the piston rod of the twentieth frame side-pressing cylinder 7c and the pressure arm of the fourteenth frame downward-pressing cylinder 7d are both facing the front end of the substrate 1. The piston rod end of the twentieth frame side-pressing cylinder 7c is equipped with a twentieth frame side-pressing component, and the pressure arm of the fourteenth frame downward-pressing cylinder 7d is equipped with a fourteenth frame downward-pressing component.

[0063] like Figure 1 , 9 As shown in Figures 1 and 10, several frame support blocks are installed below the first frame pressing component, the second frame pressing component, the third frame pressing component, the fourth frame pressing component, the fifth frame pressing component, the sixth frame pressing component, the seventh frame pressing component, the eighth frame pressing component, the eleventh frame pressing component, the twelfth frame pressing component, the thirteenth frame pressing component, and the fourteenth frame pressing component. These frame support blocks support the frame of the battery box, and the aforementioned frame pressing components apply downward pressure to the frame to prevent longitudinal displacement of the frame during the welding process.

[0064] Several crossbeam support blocks are installed below the first and second crossbeam pressing components. These crossbeam support blocks support the crossbeams of the battery box, and the aforementioned crossbeam pressing components apply downward pressure to the crossbeams to prevent longitudinal displacement of the crossbeams during the welding process.

[0065] like Figure 1 , 9As shown in Figure 10, the first frame side pressing component, the second frame side pressing component, the third frame side pressing component, the fourth frame side pressing component, the fifth frame side pressing component, the sixth frame side pressing component, the seventh frame side pressing component, the eighth frame side pressing component, the ninth frame side pressing component, the tenth frame side pressing component, the eleventh frame side pressing component, the twelfth frame side pressing component, the thirteenth frame side pressing component, the fourteenth frame side pressing component, the fifteenth frame side pressing component, the sixteenth frame side pressing component, the seventeenth frame side pressing component, the eighteenth frame side pressing component, the nineteenth frame side pressing component, and the twentieth frame side pressing component are all equipped with several frame limiting blocks facing each other. These frame limiting blocks position and laterally limit the frame of the battery box, and the aforementioned frame side pressing components apply lateral pressure to the frame to prevent lateral displacement of the frame during the welding process.

[0066] Both the first and second crossbeam side-pressing components are equipped with several crossbeam limiting blocks. These crossbeam limiting blocks position and laterally limit the crossbeams of the battery box. The crossbeam side-pressing components apply lateral pressure to the crossbeams to prevent lateral displacement of the crossbeams during the welding process.

[0067] like Figure 1 As shown, all the aforementioned frame pressing cylinders and all the frame side pressing cylinders constitute a frame clamping device; all the aforementioned beam pressing cylinders and all the beam side pressing cylinders constitute a beam clamping device.

[0068] like Figure 1 , 8 As shown in Figures 9 and 1, two movable positioning mechanisms 8 are installed on the base plate 1, and all movable positioning mechanisms 8 are close to the fifth frame pressing cylinder 3e and the fourteenth frame side pressing cylinder 6a, respectively.

[0069] The movable positioning mechanism 8 includes a slide rail 8a parallel to the short side of the substrate 1. A mounting seat 8e, which moves along the slide rail 8a, is mounted on the slide rail 8a. A positioning pin 8b is fixedly mounted on the mounting seat 8e. Positioning pin limiting plates 8c are also mounted at both ends of the slide rail 8a. A spring plunger 8d is fixedly mounted on the positioning pin limiting plate 8c, facing and contacting the mounting seat 8e. The positioning pin 8b passes through a positioning hole on the frame to position the frame. After welding, the frame retracts inward during cooling. After the cylinder is opened, the positioning pin 8b retracts inward along the slide rail 8a, effectively preventing the frame from twisting, thus facilitating the removal of the battery box and improving work efficiency.

[0070] like Figure 1 , 9As shown in Figure 10, four edge positioning detection sensors 9a and one beam positioning detection sensor 9b are mounted on the substrate 1, with the edge positioning detection sensors 9a close to the edge clamping device and the beam positioning detection sensor 9b close to the beam clamping device.

[0071] like Figure 1 , 9 As shown in Figures 1 and 10, lifting rings 10 are respectively installed at the four ends of the substrate 1.

Claims

1. A new energy battery box welding fixture with movable positioning, comprising a base plate (1), characterized in that, A frame clamping device is installed on the substrate (1), and the frame clamping device includes at least four frame pressing cylinders and at least four frame side pressing cylinders; At least one pair of movable positioning mechanisms (8) are provided opposite to each other on the outer side of the frame clamping device. The movable positioning mechanism (8) includes a slide rail (8a) facing the frame clamping device, and a positioning pin (8b) that moves along the slide rail (8a) is mounted on the slide rail (8a).

2. The active positioning welding fixture for new energy battery boxes according to claim 1, characterized in that, The slide rail (8a) is equipped with a mounting base (8e) that moves along the slide rail (8a), and the positioning pin (8b) is fixedly mounted on the mounting base (8e); Both ends of the slide rail (8a) are equipped with positioning pin limiting plates (8c), and spring plungers (8d) are fixedly installed on the positioning pin limiting plates (8c). The spring plungers (8d) face the mounting base (8e) and are in contact with the mounting base (8e).

3. The active positioning welding fixture for new energy battery boxes according to claim 1, characterized in that, Each of the frame pressing cylinders is equipped with a frame pressing component, and a frame support block is installed below each frame pressing component; each of the frame side pressing cylinders is equipped with a frame side pressing component, and a frame limiting block is installed directly opposite each frame side pressing component.

4. The active positioning welding fixture for new energy battery boxes according to claim 1, characterized in that, A crossbeam clamping device is installed in the middle of the frame clamping device, which includes at least one crossbeam downward pressure cylinder and at least one crossbeam side pressure cylinder.

5. The active positioning welding fixture for new energy battery boxes according to claim 4, characterized in that, Each of the crossbeam pressing cylinders is equipped with a crossbeam frame pressing component, and a crossbeam support block is installed below each crossbeam frame pressing component; each of the crossbeam side pressing cylinders is equipped with a crossbeam frame side pressing component, and a crossbeam limiting block is installed directly opposite each crossbeam frame side pressing component.

6. The active positioning welding fixture for new energy battery boxes according to claim 4, characterized in that, At least four edge positioning detection sensors (9a) and at least one beam positioning detection sensor (9b) are mounted on the substrate (1), with the edge positioning detection sensor (9a) close to the edge clamping device and the beam positioning detection sensor (9b) close to the beam clamping device.

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