Tray friction welding clamp

Abstract

The utility model relates to a tray friction welding clamp which comprises a base frame and a plurality of supports. A to-be-welded aluminum alloy battery tray is placed on the top face of the rectangular plate, one side of the to-be-welded aluminum alloy battery tray is tightly attached to the limiting plate, and the other end of the to-be-welded aluminum alloy battery tray is aligned with the fixing column. The first air cylinder is started, the movable columns are driven to move towards the fixed columns along the strip holes until the movable columns are matched with the fixed columns to clamp the two ends of the to-be-welded aluminum alloy battery trays, through the design of the detachable fixed columns, the device can adapt to the to-be-welded aluminum alloy battery trays with different lengths, and longitudinal accurate positioning is achieved; the Z-shaped plate is driven to rotate downwards around the top hinge point of the support, the bottom of the Z-shaped plate presses the top face of the to-be-welded aluminum alloy battery tray, the Z-shaped structure of the Z-shaped plate provides a lever force arm, the pressing force stability is enhanced, and the situation that the to-be-welded aluminum alloy battery tray floats or deforms due to the axial pressure of a stirring needle in the welding process is prevented.

Description

Technical Field

[0001] This utility model relates to a pallet friction welding fixture, specifically a pallet friction welding fixture with positioning function. Background Technology

[0002] Aluminum alloy battery trays are increasingly being used in power battery systems due to their lightweight and excellent conductivity. The large panel welding of these trays requires high precision, and friction stir welding (FSW), a solid-state joining technology, is widely used in the manufacturing of aluminum alloy battery trays due to its advantages such as no need for filler wire, small heat-affected zone, and stable weld quality. However, in actual production, because the stirring pin needs to penetrate the surface of the aluminum alloy battery tray and apply axial pressure during FSW, if the tray is not precisely positioned during clamping, defects such as weld misalignment and poor joint formation can easily occur due to clamping misalignment or uneven stress. Utility Model Content

[0003] The main purpose of this utility model is to provide a tray friction welding fixture to solve the problem that the existing technology lacks a precise positioning structure for thin-walled components. Since the stirring pin needs to penetrate the surface of the aluminum alloy battery tray to be welded and apply axial pressure during the friction stir welding process, if the aluminum alloy battery tray to be welded is not precisely positioned during clamping, it is very easy to cause defects such as weld misalignment and poor joint formation due to clamping offset or uneven force.

[0004] To achieve the above objectives, this utility model provides a pallet friction welding fixture, including a base frame and multiple supports;

[0005] A rectangular plate is fixed to the top of the base frame, and multiple holes are opened on the top wall of the rectangular plate along its length.

[0006] Each slot has a detachable fixed post at one end and a movable post at the other end. The movable post is connected to the first cylinder, and the cylinder seat of the first cylinder is fixedly connected to the rectangular plate.

[0007] A limiting plate is fixedly installed on one side of the top wall of the rectangular plate. The limiting plate is set along the length of the slot and is located on one side of the slot.

[0008] Multiple supports are divided into two groups, and the two groups of supports are located on both sides of the slot;

[0009] The bottom end of the bracket is fixedly connected to the rectangular plate, and the top wall is hinged to the Z-shaped plate. The bottom corner of the Z-shaped plate is hinged to the top of the bracket, and the bottom is hinged to the second cylinder.

[0010] The cylinder seat of the second cylinder is fixedly connected to the rectangular plate.

[0011] A preferred embodiment is that a first flexible block is fixedly mounted on the pressing end of the Z-shaped plate.

[0012] A preferred embodiment is that the top of both the movable and fixed columns are fitted with flexible sleeves.

[0013] A preferred embodiment is that the bracket includes a T-shaped plate and two side plates. The T-shaped plate is fixed on the rectangular plate, and an extension rod is fixed at one end of the T-shaped plate. One end of each of the two side plates is fixed on both sides of the extension rod, and a shaft is rotatably mounted at the other end. The bottom corner of the Z-shaped plate is fixedly sleeved on the shaft.

[0014] A preferred embodiment is that the pallet friction welding fixture further includes a conveyor frame, which is fixedly mounted to the end of the rectangular plate away from the limiting plate. Two parallel rollers are rotatably mounted inside the conveyor frame, with each roller positioned along the length of the slot.

[0015] A preferred embodiment is that the cylinder seat of the second cylinder is located on the bottom wall of the rectangular plate;

[0016] A third cylinder is fixedly installed at each of the four corners of the top wall of the rectangular plate. The cylinder seat of the third cylinder is fixed with a connecting block, and the piston rod is hinged to an L-shaped plate. Inclined rods are hinged to both sides of the connecting block, and the ends of the two inclined rods away from the connecting block are hinged to the middle of the L-shaped plate.

[0017] A preferred embodiment is that a second flexible block is fixed to the pressing end of the L-shaped plate.

[0018] A preferred embodiment is that the base frame includes a rectangular frame and a base plate, the top wall of the rectangular frame is fixedly connected to the rectangular plate, and the bottom wall is fixedly connected to the base plate, with the cylinder seat of the first cylinder located inside the rectangular frame.

[0019] A preferred embodiment is that the fixing post is a threaded rod with two nuts screwed onto it. The two nuts are located on both sides of the rectangular plate and abut against the rectangular plate.

[0020] As can be seen from the above scheme:

[0021] Place the aluminum alloy battery tray to be welded on the top surface of the rectangular plate, so that one side of the aluminum alloy battery tray to be welded is in close contact with the limiting plate and the other end is aligned with the fixing post. The limiting plate extends along the direction of the slot to ensure that the aluminum alloy battery tray to be welded is precisely aligned in the width direction, avoiding lateral displacement. The first cylinder is activated, driving the moving column to move along the slot towards the fixed column until it cooperates with the fixed column to clamp the two ends of the aluminum alloy battery tray to be welded. The detachable fixed column design can accommodate aluminum alloy battery trays of different lengths to be welded, achieving precise longitudinal positioning. The second cylinder is activated, driving the Z-shaped plate to rotate downward around the hinge point at the top of the bracket. Its bottom presses against the top surface of the aluminum alloy battery tray to be welded. The Z-shaped structure of the Z-shaped plate provides a lever arm, enhancing the stability of the clamping force and preventing the aluminum alloy battery tray to be welded from floating or deforming due to the axial pressure of the stirring pin during the welding process. In the prior art, when the friction stir welding equipment is started, the stirring pin penetrates the surface of the aluminum alloy battery tray to be welded and applies axial pressure. Since the aluminum alloy battery tray to be welded has been longitudinally clamped, laterally limited, and vertically pressed, the aluminum alloy battery tray to be welded maintains zero displacement during the welding process, avoiding weld misalignment or poor joint formation. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged structural diagram of region A in the middle;

[0025] Figure 3 yes Figure 1 A magnified structural diagram of region B in the middle;

[0026] Figure 4 yes Figure 1 A magnified structural diagram of region C in the middle;

[0027] Figure 5 This is a three-dimensional structural diagram of the present invention with the base plate removed.

[0028] Explanation of reference numerals in the attached figures

[0029] 1. Base frame; 11. Rectangular frame; 12. Base plate;

[0030] 2. Bracket; 21. Second cylinder; 22. Z-shaped plate; 23. First flexible block; 24. T-shaped plate; 25. Side plate; 26. Extension rod; 27. Shaft;

[0031] 3. Rectangular plate; 31. Hole; 32. Limiting plate;

[0032] 4. Fixed post; 41. Flexible sleeve; 42. Nut;

[0033] 5. Moving column; 51. First cylinder;

[0034] 6. Conveyor frame; 61. Rollers;

[0035] 7. Third cylinder; 71. Connecting block; 72. L-shaped plate; 73. Inclined rod; 74. Second flexible block. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Example:

[0038] like Figures 1-5 As shown, this embodiment provides a tray friction welding fixture suitable for battery tray friction welding, including a base frame 1 and multiple supports 2. Figure 1 As shown, a rectangular plate 3 is fixed to the top of the base frame 1, and multiple slots 31 are formed along the length of the top wall of the rectangular plate 3. Each slot 31 is arranged along the width of the rectangular plate 3, such as... Figure 3 As shown, a fixed post 4 is detachably mounted at one end of each slot 31, and a movable post 5 is movably mounted at the other end of each slot 31. The movable post 5 can slide along the length of the slot via a first cylinder 51. A flexible sleeve 41 is fitted over the top of both the movable post 5 and the fixed post 4. The flexible sleeve 41 is made of rubber and its purpose is to protect the workpiece and prevent scratches during clamping. Figure 5 As shown, the movable column 5 is connected to the first cylinder 51, and the cylinder seat of the first cylinder 51 is fixedly connected to the rectangular plate 3. Figure 1 As shown, the base frame 1 includes a rectangular frame 11 and a base plate 12. The top wall of the rectangular frame 11 is fixedly connected to the rectangular plate 3, and the bottom wall of the rectangular frame 11 is fixedly connected to the base plate 12. The cylinder seat of the first cylinder 51 is located inside the rectangular frame 11. A limiting plate 32 is fixedly installed on one side of the top wall of the rectangular plate 3. The limiting plate 32 is arranged along the length of the slots 31, and the limiting plate 32 is located on one side of the multiple slots 31. Figure 1 As shown, multiple supports 2 are divided into two groups, with the two groups of supports 2 symmetrically arranged on both sides of the slot 31. (As shown...) Figure 2As shown, the bottom end of the bracket 2 is fixedly connected to the rectangular plate 3, and the top wall of the bracket 2 is hinged to a Z-shaped plate 22. The bottom corner of the Z-shaped plate 22 is hinged to the top of the bracket 2, and the bottom of the Z-shaped plate 22 is hinged to a second cylinder 21 (i.e., the piston rod of the second cylinder is hinged to one end of the bottom of the Z-shaped plate 22). A first flexible block 23 is fixedly installed at the pressing end of the Z-shaped plate 22 (the pressing end of the Z-shaped plate 22 is the end of the Z-shaped plate 22 away from the second cylinder). The first flexible block 23 is made of rubber, and it presses onto the workpiece while protecting it. The cylinder seat of the second cylinder 21 is fixedly connected to the rectangular plate 3. Among them, one end of multiple Z-shaped plates 22 (considered as the pressing end) provides a precise positioning structure and pressing for thin-walled components. The support 2 includes a T-shaped plate 24 and two side plates 25. The T-shaped plate 24 is fixed on the rectangular plate 3, and an extension rod 26 is fixed at one end of the T-shaped plate 24. One end of the two side plates 25 is fixed on both sides of the extension rod 26, and a shaft 27 is rotatably set at the other end of the two side plates 25. The bottom corner of the Z-shaped plate 22 is fixedly sleeved on the shaft 27.

[0039] Place the aluminum alloy battery tray to be welded on the top surface of the rectangular plate 3, so that one side of the aluminum alloy battery tray to be welded is in close contact with the limiting plate 32, and the other end is aligned with the fixing post 4. The limiting plate 32 extends along the direction of the slot 31 to ensure that the aluminum alloy battery tray to be welded is precisely aligned in the width direction and avoids lateral displacement. The first cylinder 51 is activated to drive the moving column 5 to move along the slot 31 towards the fixed column 4 until it cooperates with the fixed column 4 to clamp the two ends of the aluminum alloy battery tray to be welded. The design of the detachable fixed column 4 can adapt to aluminum alloy battery trays of different lengths to be welded and achieve precise positioning. The second cylinder 21 is activated to drive the Z-shaped plate 22 to rotate downward around the top hinge point of the bracket 2. Its bottom presses against the top surface of the aluminum alloy battery tray to be welded. The Z-shaped structure of the Z-shaped plate 22 provides a lever arm to enhance the stability of the clamping force and prevent the aluminum alloy battery tray to be welded from floating or deforming due to the axial pressure of the stirring pin during the welding process. In the prior art, when the friction stir welding equipment is started, the stirring pin penetrates the surface of the aluminum alloy battery tray to be welded and applies axial pressure. Since the aluminum alloy battery tray to be welded has been clamped longitudinally, limited laterally and pressed vertically, the aluminum alloy battery tray to be welded maintains zero displacement during the welding process, avoiding weld misalignment or poor joint formation.

[0040] like Figure 1As shown, the pallet friction welding fixture also includes a conveyor frame 6. The conveyor frame 6 is fixedly installed at the end of the rectangular plate 3 away from the limiting plate 32. Two parallel rollers 61 are rotatably installed inside the conveyor frame 6, with each roller 61 arranged along the length of the slot 31. The aluminum alloy battery pallet workpiece to be welded is placed horizontally on the rollers 61 of the conveyor frame 6, with the bottom of the workpiece in contact with the two parallel rollers 61. The rollers 61 are arranged along the length of the slot 31 and are flush with the top surface of the rectangular plate 3, ensuring that the workpiece can smoothly transition to the welding station. During the conveying process, one side of the workpiece gradually approaches the limiting plate 32 until it is completely in contact with the surface of the limiting plate 32, completing the lateral positioning.

[0041] like Figure 1 , Figure 4 As shown, the cylinder seat of the second cylinder 21 is located on the bottom wall of the rectangular plate 3. A third cylinder 7 is fixedly installed at each of the four corners of the top wall of the rectangular plate 3. A connecting block 71 is fixed to the cylinder seat of the third cylinder 7, and an L-shaped plate 72 is hinged to the piston rod of the third cylinder. It should be noted that the piston rod of the third cylinder is hinged to one end of the L-shaped plate, and inclined rods 73 are hinged to both sides of the connecting block 71. The ends of the two inclined rods 73 furthest from the connecting block 71 are hinged to the middle of the other end of the L-shaped plate 72. A third cylinder 7 is installed at each of the four corners of the top surface of the rectangular plate 3, and the piston rod end of each third cylinder 7 is hinged to the L-shaped plate 72, forming four independent pressing units. Inclined rods 73 are hinged to both sides of the connecting block 71, and the other end of the inclined rods 73 is hinged to the corner of the L-shaped plate 72. When the piston rod of the third cylinder 7 extends or retracts, the inclined rods 73 guide the L-shaped plate 72 to move along a set trajectory, causing the long side end face of the L-shaped plate 72 to vertically press against the four corner areas of the top surface of the workpiece. A second flexible block 74 is fixed to the pressing end of the L-shaped plate 72. The second flexible block 74 is made of rubber and is pressed onto the workpiece, protecting it. The fixing post 4 is a threaded rod with two nuts 42 screwed onto it. The two nuts 42 are located on both sides of the rectangular plate 3 and abut against it. The threaded rod and the double nuts 42 adopt a locking mechanism, which achieves high precision, high stability and rapid adaptation in lateral positioning, while improving the versatility and maintenance efficiency of the fixture, providing a reliable clamping guarantee for the friction stir welding process of thin-walled aluminum alloy battery trays.

[0042] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A friction welding fixture for battery trays, characterized in that, Includes a base frame and multiple supports; A rectangular plate is fixed to the top of the base frame, and multiple holes are formed on the top wall of the rectangular plate along its length. A fixed post is detachably provided at one end of each of the slots, and a movable post is provided at the other end. The movable post is connected to a first cylinder, and the cylinder seat of the first cylinder is fixedly connected to the rectangular plate. A limiting plate is fixedly installed on one side of the top wall of the rectangular plate. The limiting plate is arranged along the length of the slot and is located on one side of the slot. The plurality of brackets are divided into two groups, and the two groups of brackets are located on both sides of the slot; The bottom end of each bracket is fixedly connected to the rectangular plate, and the top wall is hinged to a Z-shaped plate. The bottom corner of the Z-shaped plate is hinged to the top of the bracket, and one end of the bottom is hinged to a second cylinder. The cylinder seat of the second cylinder is fixedly connected to the rectangular plate.

2. The pallet friction welding fixture according to claim 1, characterized in that, The pressing end of the Z-shaped plate is fixedly provided with a first flexible block.

3. The pallet friction welding fixture according to claim 2, characterized in that, Both the movable column and the fixed column are fitted with flexible sleeves at their top ends.

4. The pallet friction welding fixture according to claim 1, characterized in that, The bracket includes a T-shaped plate and two side plates. The T-shaped plate is fixed to the rectangular plate, and an extension rod is fixed to one end of the T-shaped plate. One end of each of the two side plates is fixed to both sides of the extension rod, and a shaft is rotatably mounted at the other end. The bottom corner of the Z-shaped plate is fixed to the shaft.

5. The pallet friction welding fixture according to claim 1, characterized in that, It also includes a conveying frame, which is fixedly disposed at the end of the rectangular plate away from the limiting plate. Two parallel rollers are rotatably disposed inside the conveying frame, and each roller is disposed along the length direction of the slot.

6. The pallet friction welding fixture according to claim 1, characterized in that, The cylinder seat of the second cylinder is located on the bottom wall of the rectangular plate; A third cylinder is fixedly installed at each of the four corners of the top wall of the rectangular plate. The cylinder seat of the third cylinder is fixedly connected to a connecting block, and the piston rod is hinged to an L-shaped plate. Inclined rods are hinged to both sides of the connecting block, and the ends of the two inclined rods away from the connecting block are hinged to the middle of the L-shaped plate.

7. The pallet friction welding fixture according to claim 6, characterized in that, The pressing end of the L-shaped plate is fixed with a second flexible block.

8. The pallet friction welding fixture according to claim 1, characterized in that, The base frame includes a rectangular frame and a base plate. The top wall of the rectangular frame is fixedly connected to the rectangular plate, and the bottom wall is fixedly connected to the base plate. The cylinder seat of the first cylinder is located inside the rectangular frame.

9. The pallet friction welding fixture according to any one of claims 1-8, characterized in that, The fixing post is a threaded rod, and two nuts are screwed onto the threaded rod. The two nuts are located on both sides of the rectangular plate and abut against the rectangular plate.

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