A universal fixture for parallel sealing of square enclosures

Abstract

The utility model relates to the technical field of assembly fixture, propose a kind of general fixture for square shell parallel seal welding, including base, the base bottom inner wall rotationally connected with gear ring, and gear ring one side outer wall is welded with linkage handle, the gear ring top outer wall rotationally connected with upper cover, and gear ring is between base and upper cover, the base bottom inner wall is fixedly connected with the gear shaft of equidistance distribution, and the outer wall of gear shaft is rotationally connected with transmission gear, the base bottom inner wall is fixedly connected with clamping portion guide rail in gear shaft one side. The utility model can be adapted to the various types square shell of side length 19-41mm, can effectively simplify parallel seal welding fixture library, reduce the cost of a large number of special fixture production, solve the problem that product delivery time is delayed due to lack of special fixture to a certain extent, general fixture can cover multi-specification product, reduce fixture processing, storage and management cost, especially suitable for small-batch multi-specification production scene.

Description

Technical Field

[0001] This utility model relates to the field of assembly fixture technology, and in particular to a universal fixture for parallel sealing welding of square shells. Background Technology

[0002] Parallel soldering technology is widely used in the packaging processes of precision devices such as electronic components, sensors, and integrated circuits. Its core lies in applying pulsed current to both sides of the workpiece using high-precision electrodes to achieve rapid melting and bonding of the solder. "Parallel" refers to the fact that the electrode wheels simultaneously weld both sides of the product. However, this process places extremely high demands on the positioning accuracy and adaptability of the fixture. During the packaging process, the fixture must ensure that the center symmetry point of the product coincides perfectly with the center of the fixture itself after the product is clamped; otherwise, it can lead to uncontrolled welding of the packaging seam, decreased packaging reliability, and product failure.

[0003] The industry uses parallel sealing technology for packaging shells of countless sizes and types. Current parallel sealing fixtures are made by machining grooves on a cylindrical aluminum ingot according to the shape of a specific shell to place the product. This method means that a tooling fixture needs to be drawn for each model of shell, and the special fixture needs to be changed frequently, which leads to complex fixture management. When encountering shells with similar structures, the compatibility between the fixture and the product needs to be checked repeatedly before use. Moreover, the number of fixtures in the library is huge, which increases costs. If a new shell is used without prior notification to the process design department for a special fixture, it can also lead to product delivery delays. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a universal fixture for parallel sealing welding of square shells, which more accurately solves the problem of poor compatibility between the fixture and the product.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a universal clamp for parallel sealing welding of square shells, including a base, a toothed ring rotatably connected to the inner wall of the bottom of the base, and a linkage handle welded to the outer wall of one side of the toothed ring. A top cover is rotatably connected to the outer wall of the top of the toothed ring, and the toothed ring is located between the base and the top cover. Gear shafts distributed at equal intervals are fixedly connected to the inner wall of the bottom of the base, and a transmission gear is rotatably connected to the outer wall of the gear shaft. A clamping guide rail is fixedly connected to the inner wall of the bottom of the base on one side of the gear shaft, and a clamping part is slidably connected to the outer wall of the clamping guide rail.

[0007] Furthermore, the clamping part includes a triangular block placed on the inner wall of the bottom of the base, a rack provided on the outer wall of one side of the triangular block, and a sliding groove opened on the outer wall of the top of the triangular block, and the clamping part guide rail is slidably connected to the inner wall of the sliding groove.

[0008] Furthermore, the gear ring meshes with the transmission gear, and the transmission gear meshes with the rack.

[0009] Furthermore, the top outer wall of the base and the bottom outer wall of the cover are both provided with arc-shaped grooves, and the linkage handle is slidably connected to the inner wall of the arc-shaped groove.

[0010] Furthermore, a rectangular opening is provided through the center of the outer wall of both the base and the top cover.

[0011] Furthermore, the top outer wall of the upper cover is provided with equally spaced shaft holes, and the gear shaft is embedded in the inner wall of the shaft holes.

[0012] Furthermore, the outer wall of the top of the cover has guide rail positioning holes around the rectangular opening, and the clamping guide rail is embedded in the inner wall of the guide rail positioning holes.

[0013] Furthermore, positioning bolt holes are provided around the perimeter of the outer wall of the base and the top cover, and a base positioning hole is provided on the inner wall of the bottom of the base.

[0014] The beneficial effects of this utility model are:

[0015] This utility model proposes a universal clamp for parallel sealing welding of square shells. The "iris-like mechanism" formed by the highly concentric base, top cover and toothed ring serves as a universal clamp for square shells. By optimizing the internal structure, designing a reasonable guiding mechanism and adding a synchronous linkage mechanism, the rotation and translation method in the iris-like mechanism can be improved into four parallel, synchronous, centered and firmly movable clamping parts through the transmission cooperation of the toothed ring, transmission gear and clamping parts. The four clamping parts can firmly clamp the product in the center position.

[0016] The combination of the linkage handle and the arc groove simplifies the clamping and adjustment process. The operator only needs to make a single turn to complete the clamping or releasing action, which greatly shortens the clamping time. In addition, the sliding connection design of the clamping part guide rail and the triangular block, combined with the meshing transmission of the rack and gear, ensures that the clamping force is evenly distributed and avoids displacement of the shell during the welding process.

[0017] It can be adapted to various types of square shells with side lengths of 19-41mm, effectively simplifying the parallel sealing fixture library, reducing the cost of manufacturing a large number of special fixtures, and solving to some extent the problem of product delivery delays caused by the lack of special fixtures. The universal fixture can cover multiple product specifications, reducing the cost of fixture processing, storage and management, and is especially suitable for small-batch, multi-variety production scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a general-purpose fixture for parallel sealing welding of square shells;

[0019] Figure 2 This is a schematic diagram of the structure of the top cover of a general-purpose clamp for parallel sealing of square shells when unfolded;

[0020] Figure 3 A schematic diagram showing the overall structure of a general-purpose fixture for parallel sealing of square housings;

[0021] Figure 4 This is a schematic diagram of a toothed ring connection structure for a general-purpose fixture used for parallel sealing of square housings.

[0022] The attached figures are labeled as follows:

[0023] In the diagram: 1. Base; 2. Top cover; 3. Gear ring; 4. Gear shaft; 5. Transmission gear; 6. Clamping guide rail; 7. Clamping part; 71. Triangular block; 72. Rack; 73. Slide groove; 8. Linkage handle; 9. Arc groove; 10. Rectangular opening; 11. Shaft hole; 12. Guide rail positioning hole; 13. Positioning bolt hole; 14. Base positioning hole. Detailed Implementation

[0024] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0025] Please refer to Figures 1-4 This utility model proposes a universal fixture for parallel sealing welding of square shells, including a base 1. A toothed ring 3 is rotatably connected to the inner wall of the bottom of the base 1, and a linkage handle 8 is welded to the outer wall of one side of the toothed ring 3. An arc-shaped groove 9 is provided on the outer wall of the top of the base 1 and the outer wall of the bottom of the cover 2, and the linkage handle 8 is slidably connected to the inner wall of the arc-shaped groove 9.

[0026] The top outer wall of the toothed ring 3 is rotatably connected to the top cover 2, and the toothed ring 3 is located between the base 1 and the top cover 2. The bottom inner wall of the base 1 is fixedly connected to the gear shafts 4 distributed at equal intervals, and the outer wall of the gear shafts 4 is rotatably connected to the transmission gears 5. The top outer wall of the top cover 2 is provided with shaft holes 11 distributed at equal intervals, and the gear shafts 4 are embedded in the inner wall of the shaft holes 11. The toothed ring 3 and the transmission gears 5 mesh with each other, and the transmission gears 5 and the rack 72 mesh with each other.

[0027] The meshing between the gear ring 3 and the transmission gear 5 ensures a linear relationship between the rotation angle of the linkage handle 8 and the displacement of the clamping part 7, facilitating precise control of the clamping range. Simultaneously, the bidirectional meshing design between the transmission gear 5 and the rack 72 eliminates motion backlash and improves synchronization.

[0028] The bottom inner wall of the base 1 is fixedly connected to a clamping guide rail 6 on one side of the gear shaft 4, and a clamping part 7 is slidably connected to the outer wall of the clamping guide rail 6. A rectangular opening 10 is provided through the center of the outer wall of both the base 1 and the upper cover 2. A guide rail positioning hole 12 is provided around the rectangular opening 10 on the top outer wall of the upper cover 2, and the clamping guide rail 6 is embedded in the inner wall of the guide rail positioning hole 12.

[0029] The rectangular opening 10 of the base 1 and the top cover 2 provides through space for the outer shell, and its size is slightly larger than the maximum side length of the outer shell to avoid interference.

[0030] The clamping part 7 includes a triangular block 71 placed on the inner wall of the bottom of the base 1, a rack 72 provided on the outer wall of one side of the triangular block 71, and a groove 73 opened on the outer wall of the top of the triangular block 71, and the clamping part guide rail 6 is slidably connected to the inner wall of the groove 73.

[0031] The clamping part 7 consists of a triangular block 71, a rack 72, and a sliding groove 73. The bottom of the triangular block 71 contacts the base 1. Its triangular structure design can convert the rotational motion of the transmission gear 5 into the linear motion of the rack 72, thereby driving the clamping part 7 to slide along the clamping part guide rail 6.

[0032] The base 1 and the top cover 2 are both provided with positioning bolt holes 13 around the outer perimeter of the top, and the base 1 is provided with a base positioning hole 14 on the inner bottom wall.

[0033] In this embodiment, the "iris-like mechanism" formed by the highly concentric base 1, top cover 2, and toothed ring 3 serves as a universal clamp for the square shell. By optimizing the internal structure, designing a reasonable guiding mechanism, and adding a synchronous linkage mechanism, the rotation and translation method in the iris-like mechanism can be improved into four parallel, synchronous, centered, and firmly movable clamping parts 7 through the transmission cooperation of the toothed ring 3, transmission gear 5, and clamping parts 7. The four clamping parts 7 can firmly clamp the product in the center position.

[0034] The combination of the linkage handle 8 and the arc groove 9 simplifies the clamping and adjustment process. The operator only needs to make a single turn to complete the clamping or releasing action, which greatly shortens the clamping time. In addition, the sliding connection design of the clamping part guide rail 6 and the triangular block 71, combined with the meshing transmission of the rack 72 and the transmission gear 5, ensures that the clamping force is evenly distributed and avoids displacement of the shell during the welding process.

[0035] It can be adapted to various types of square shells with side lengths of 19-41mm, effectively simplifying the parallel sealing fixture library, reducing the cost of manufacturing a large number of special fixtures, and solving to some extent the problem of product delivery delays caused by the lack of special fixtures. The universal fixture can cover multiple product specifications, reducing the cost of fixture processing, storage and management, and is especially suitable for small-batch, multi-variety production scenarios.

[0036] Working principle:

[0037] Initial adjustment: The operator moves the linkage handle 8, causing the gear ring 3 to rotate. The gear ring 3 drives the transmission gear 5 to rotate, and the transmission gear 5 further pushes the four clamping parts 7 to expand or contract synchronously along the clamping part guide rail 6 via the rack 72 to accommodate different sized shells.

[0038] Shell placement: Place the square shell through the rectangular opening 10 into the clamping groove of the clamping part 7, ensuring that the center of the shell is aligned with the center of the clamp.

[0039] Clamping and locking: Move the linkage handle 8, and the clamping part 7 will tighten inward. At this time, the gap can be adjusted to the preset value with the help of the feeler gauge. Then, tighten the positioning stud on the square shell through the positioning bolt hole 13 to fix the position of the shell.

[0040] Welding execution: The fixture is mounted as a whole on the parallel sealing welding machine, and the electrode wheels apply pulsed current to both sides of the housing to complete the welding. The rigid support and uniform clamping force of the clamping part 7 ensure that there is no displacement during the welding process.

[0041] Disassembly and Reset: After welding is completed, loosen the positioning stud, turn the linkage handle 8 to release the outer shell, clean the fixture and reset the clamping part 7 to the initial position to prepare for the next cycle.

[0042] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A universal fixture for parallel sealing welding of square housings, characterized in that, The device includes a base, a toothed ring rotatably connected to the inner wall of the bottom of the base, and a linkage handle welded to the outer wall of one side of the toothed ring. A top cover is rotatably connected to the outer wall of the top of the toothed ring, and the toothed ring is located between the base and the top cover. Gear shafts distributed at equal intervals are fixedly connected to the inner wall of the bottom of the base, and transmission gears are rotatably connected to the outer wall of the gear shafts. A clamping guide rail is fixedly connected to the inner wall of the bottom of the base on one side of the gear shafts, and a clamping part is slidably connected to the outer wall of the clamping guide rail.

2. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The clamping part includes a triangular block placed on the inner wall of the bottom of the base, a rack set on the outer wall of one side of the triangular block, and a sliding groove opened on the outer wall of the top of the triangular block, and the guide rail of the clamping part is slidably connected to the inner wall of the sliding groove.

3. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The gear ring meshes with the transmission gear, and the transmission gear meshes with the rack.

4. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The top outer wall of the base and the bottom outer wall of the cover are both provided with arc-shaped grooves, and the linkage handle is slidably connected to the inner wall of the arc-shaped groove.

5. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, Both the base and the top cover have rectangular openings at the center of their outer walls.

6. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The top outer wall of the cover has equally spaced shaft holes, and the gear shaft is embedded in the inner wall of the shaft holes.

7. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The top outer wall of the upper cover has guide rail positioning holes around the rectangular opening, and the clamping guide rail is embedded in the inner wall of the guide rail positioning holes.

8. The universal fixture for parallel sealing welding of square shells according to claim 1, characterized in that, The base and the outer wall of the top cover are provided with positioning bolt holes, and the bottom inner wall of the base is provided with a base positioning hole.

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