Special fixture for laser welding of 5g base station lightning protection device

Abstract

This utility model discloses a special fixture for laser welding of 5G base station surge protectors, including a base plate, a base movably mounted on the base plate, and a top seat with a movable cover mounted on the base plate. The base plate has several contoured grooves; the shape of the contoured grooves matches the outline of the 5G base station surge protector. The top seat has several mounting holes, and the positions of the mounting holes correspond to the contoured grooves. A boss is provided on the inner circumference of each mounting hole, and a pressing and light-blocking mechanism is installed thereon. The pressing and light-blocking mechanism includes a sliding seat and an elastic pressure tongue assembly and an elastic light-blocking assembly mounted thereon. The elastic pressure tongue assembly includes a guide shaft cover, a guide shaft with a guide ring, a guide shaft spring, a pressure tongue, and a fixing screw. The elastic light-blocking assembly includes a shoulder screw, a light-blocking block spring, and a light-blocking block. The pressure tongue and light-blocking block are arranged around the area below the welding hole, achieving high-precision and rapid positioning of the fixture, blocking laser energy dissipation, and adjusting the pressing and light-blocking positions.

Description

Technical Field

[0001] This utility model relates to a special fixture for laser welding, which is particularly suitable for 5G base station surge protectors and belongs to the field of welding tooling technology. Background Technology

[0002] A 5G base station surge protector is a device specifically designed to protect 5G base station signal transmission equipment from damage caused by lightning overvoltage and electromagnetic pulses. Currently, during the laser welding process of 5G base station surge protectors, clamps are needed to hold and fix the surge protector in order to facilitate the welding work.

[0003] However, traditional clamps hold individual 5G base station surge protectors, lacking the ability for quick and high-precision interchangeability. Furthermore, the clamping method is purely mechanical, lacking elasticity, height-adaptive design, and light-blocking capability. Especially when adjusting the clamping position, it requires replacing the clamping components on the clamp. Therefore, traditional clamps have the following shortcomings:

[0004] 1. Lacking fast and high-precision interchangeability, the fixtures generally use screws or structures to directly fix 5G base station surge protectors.

[0005] 2. Lack of height difference adaptive clamping function. Due to the poor consistency of 5G base station surge protector products, the compatibility of clamping products is poor, and the high precision requirements of manual installation make it difficult to implement.

[0006] 3. Without adaptive light blocking function for height difference, when welding 5G base station surge protector products, the laser energy emitted by the laser welding machine will damage the product, leading to increased costs;

[0007] 4. It lacks the function of adjusting the clamping and light-blocking positions. When the clamping position of the 5G base station surge protector needs to be changed or adjusted, it cannot be achieved by adjusting the clamp. Instead, the clamp often needs to be replaced, which makes the operation troublesome.

[0008] 5. The fixture can only hold a limited number of 5G base station surge protectors at a time, which affects welding efficiency.

[0009] Therefore, there is an urgent need to develop and design a laser welding fixture that is more suitable for 5G base station surge protectors. Summary of the Invention

[0010] To address the aforementioned technical problems, this utility model provides a special fixture for laser welding of 5G base station surge protectors. By achieving high-precision and rapid positioning, blocking laser energy dissipation, adjusting the clamping and light-blocking positions, and clamping multiple products at once, it aims to improve the efficiency of clamping and welding, and reduce the intensity of manual labor and production costs.

[0011] To achieve the above objectives, this utility model provides a special fixture for laser welding of 5G base station surge protectors, including a base plate, a base movably mounted on the base plate, and a top seat movably covered on the base.

[0012] The base has several contoured grooves; the shape of the contoured grooves matches the outline of the 5G base station surge protector.

[0013] The top seat has several mounting holes, and the mounting holes and the contoured grooves are positioned correspondingly; the inner circumference of the mounting holes is provided with a boss, and a pressing light-blocking mechanism is installed thereon; the pressing light-blocking mechanism includes a sliding seat, and an elastic pressure tongue assembly and an elastic light-blocking assembly installed thereon;

[0014] The sliding seat has a welding hole in the middle and the left and right ends are installed on both sides of the top surface of the boss.

[0015] The elastic pressure tongue assembly includes a guide shaft cover, a guide shaft with a guide ring, a guide shaft spring, a pressure tongue, and a fixing screw; the guide shaft cover is installed on the front of the top face of the sliding seat; the portion of the guide shaft below the guide ring extends downward through the sliding seat and is connected to the pressure tongue by the fixing screw; the portion of the guide shaft above the guide ring is fitted with a guide shaft spring and extends upward through the guide shaft cover; the guide shaft spring is located between the top surface of the guide ring and the inner bottom surface of the guide shaft cover.

[0016] The elastic light-blocking assembly includes a shoulder screw, a light-blocking block spring, and a light-blocking block; the shoulder screw is installed on the rear of the top surface of the sliding seat, and the portion of the shoulder screw that extends downward through the sliding seat is fitted with a light-blocking block spring, with a light-blocking block connected to the bottom end; furthermore, the pressure tongue and the light-blocking block are arranged around the area below the welding hole.

[0017] Furthermore, in this invention, the pressure tongue is inverted L-shaped, with its horizontal branch located below the guide shaft and connected to the bottom end of the guide shaft by a fixing screw, and its vertical branch located behind the fixing screw and in front of the welding hole.

[0018] Furthermore, the light-blocking block of this utility model adopts a three-sided structure, including a rear plate and two side plates connected thereto; the upper part of the rear plate is installed at the bottom end of the shoulder screw, and the lower part is located on the rear side below the welding hole; the two side plates are respectively located on both sides below the welding hole.

[0019] Furthermore, the sliding seat has symmetrical waist-shaped holes at both ends, and is installed on both sides of the top surface of the boss through the waist-shaped holes.

[0020] Furthermore, the present invention includes a pin positioning plate installed on the left and right sides of the base; a positioning hole is provided on the pin positioning plate; and pins are installed on the left and right ends of the top surface of the base plate, and the pins can cooperate with the positioning holes of the corresponding pin positioning plates.

[0021] Furthermore, the present invention includes handles installed on the left and right sides of the base.

[0022] Furthermore, the present invention provides that convex corrective wedges are installed at the left and right ends of the top surface of the base, and concave corrective wedges are installed at the left and right ends of the bottom surface of the top seat, and the convex corrective wedges can cooperate with the corresponding concave corrective wedges.

[0023] Furthermore, the present invention includes a mounting base connected to the front end of the base; a self-locking buckle, a rotating shaft, and a buckle spring are placed inside the mounting base; the self-locking buckle is placed vertically and has a hook at the top; the two ends of the rotating shaft are inserted into the left and right sides of the mounting base, and the middle part passes through the middle of the self-locking buckle; the buckle spring is placed on the rear side of the bottom of the self-locking buckle; a card is installed at the front end of the top base, and the card can lock with the self-locking buckle.

[0024] Furthermore, the rear sides of the base and the top seat are connected by a hinge.

[0025] In summary, this utility model addresses the welding process requirements of 5G base station surge protectors and achieves the following technical advantages through innovative structural design:

[0026] (1) Quick positioning: With the pins of the base plate and the pin positioning plate of the base, and the handle design of the base, the base can be quickly picked up or placed on the base plate, realizing quick pick-up and drop of the fixture and coarse positioning of the product. The operation is simple and efficient.

[0027] (2) High-precision self-locking: The base and the top seat are connected by a hinge, and through the mutual cooperation of the convex correction wedge and the concave correction wedge, and the mutual locking of the buckle mechanism and the card, the base and the top seat can quickly open and close, position and automatically self-lock, thus improving the welding yield.

[0028] (3) Adaptive clamping: The top mounting hole integrates an elastic clamping tongue assembly consisting of a sliding seat, guide shaft, guide shaft spring, guide shaft cover, clamping tongue and fixing screw. It achieves workpiece clamping and height difference adaptive function through elastic downward pressure, which enhances the compatibility of 5G surge protector and reduces the difficulty of manual clamping.

[0029] (4) Elastic light blocking protection: The elastic light blocking assembly, composed of shoulder screws, light blocking block springs and light blocking blocks, has the functions of blocking laser energy dissipation and adaptive height difference, avoiding damage to the product caused by laser energy, improving product compatibility and reducing production costs.

[0030] (5) Adjustable pressing and light blocking: The adjustable sliding seat design supports dynamic adjustment of the pressing and light blocking positions, adapting to changes in the specifications of 5G base station surge protectors. Especially when the pressing position of the product needs to be changed or adjusted, there is no need to replace the pressing and light blocking mechanism, which significantly improves the ease of operation.

[0031] (6) Batch processing capability: By configuring multiple sets of base contour grooves and top mounting holes, multiple 5G base station surge protector products can be clamped at one time, which significantly improves production efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the base and top seat in the closed state of this utility model;

[0033] Figure 2 This is a schematic diagram of the base and top seat in the open state of this utility model;

[0034] Figure 3 for Figure 2 A cross-sectional view of the snap-fit ​​assembly at point A in the middle;

[0035] Figure 4 for Figure 2 Schematic diagram of the light-blocking mechanism at point B Figure 1 ;

[0036] Figure 5 for Figure 2 Schematic diagram of the light-blocking mechanism at point B Figure 2 ;

[0037] Figure 6 for Figure 2 Side view of the light-blocking mechanism at point B;

[0038] Figure 7 for Figure 2 A cross-sectional view of the light-blocking mechanism at point B;

[0039] In the diagram: 1. Base plate, 2. Base, 3. Pin positioning plate, 4. Pin, 5. Convex correcting wedge, 6. Handle, 7. Mounting seat, 8. Shaft, 9. Self-locking buckle, 10. Buckle spring, 11. Hinge, 12. Top seat, 13. Concave correcting wedge, 14. Card, 15. Sliding seat, 151. Welding hole, 152. Waist-shaped hole, 16. Guide shaft, 17. Guide shaft spring, 18. Guide shaft cover, 19. Pressure tongue, 20. Fixing screw, 21. Shoulder screw, 22. Light blocking block spring, 23. Light blocking block, 24. Contour groove, 25. Pressing light blocking mechanism. Detailed Implementation

[0040] The present invention will be further described below with reference to the accompanying drawings. In the description of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0041] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may also be used, and changes in mechanical composition, structure, electrical, and operation may be made without departing from the spirit and scope of this disclosure. The following detailed description should not be considered limiting, and the scope of the embodiments of the present application is defined only by the claims of the published patents. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application. Spatially related terms, such as “upper,” “lower,” “left,” “right,” “front,” “rear,” etc., may be used herein to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0042] like Figure 1 , Figure 2 As shown in the figure, this embodiment provides a special fixture for laser welding of 5G base station surge protectors, including a base plate 1, a base 2 movably mounted on the top surface of the base plate 1, and a top seat 12 movably covered on the top surface of the base 2, which is described in detail below.

[0043] like Figure 2 As shown, the base 2 has several contoured slots 24 for placing 5G base station surge protectors. Therefore, the shape of all contoured slots 24 strictly matches the outline of the 5G base station surge protector product, and all contoured slots 24 maintain uniform dimensions. In specific implementation, the contoured slots 24 are arranged in a double-row parallel layout, with three contoured slots 24 in each row, totaling six workstations. This allows for the synchronous clamping of multiple 5G base station surge protector products, ensuring consistent positioning during batch processing and improving the efficiency of the laser welding process. Thus, the above design, through standardized slot structure and modular layout, effectively enhances the batch processing capability of the fixture.

[0044] like Figure 1 , Figure 2As shown, the top seat 12 has several mounting holes; a pressing and light-blocking mechanism 25 is installed in each mounting hole; an annular boss is provided on the inner circumference of each mounting hole, and the boss serves as the mounting reference surface for the pressing and light-blocking mechanism 25. In specific implementation, the number of mounting holes and contoured slots 24 are the same, and their positions correspond, used to configure a corresponding pressing and light-blocking mechanism 25 for each 5G base station surge protector product in each contoured slot 24, forming a "one slot, one mechanism" matching relationship. Therefore, the above design, through a modular mounting hole layout, achieves parallel processing capability for 5G base station surge protector products, while ensuring the independence and consistency of each workstation mechanism.

[0045] like Figures 4-7 As shown, the pressing and light-blocking mechanism 25 adopts a modular design, including a sliding seat 15 with a welding hole 151 in the middle, and an elastic pressure tongue assembly and an elastic light-blocking assembly arranged around the welding hole 151. The dual elastic components realize the coordinated control of workpiece pressing and laser protection, which is described in detail below.

[0046] Among them, such as Figure 4 , Figure 7 As shown, the sliding seat 15 has a welding hole 151 in the middle, and its left and right ends are installed on both sides of the top surface of the boss to form a stable support structure. An elastic pressure tongue assembly is installed at its front end, and an elastic light-blocking assembly is installed at its rear end. In specific implementation, the welding hole 151 is located above the workpiece to be welded, i.e., the 5G base station surge protector product, and is used for laser welding operations on the 5G base station surge protector product.

[0047] like Figures 4-7 As shown, the elastic pressure tongue assembly employs an elastic guiding structure to achieve the adaptive clamping function of the workpiece, including a guide shaft cover 18, a guide shaft 16 with a guide ring, a guide shaft spring 17, a pressure tongue 19, and a fixing screw 20. Wherein, as... Figure 7 As shown, the guide shaft cover 18 is installed on the front of the top face of the sliding seat 15; the portion of the guide shaft 16 located below the guide ring extends downward through the sliding seat 15 and is connected to the pressure tongue 19 by a fixing screw 20; the portion of the guide shaft 16 located above the guide ring is fitted with a guide shaft spring 17 and extends upward through the guide shaft cover 18; the guide shaft spring 17 is located between the top surface of the guide ring and the inner bottom surface of the guide shaft cover 18.

[0048] In other embodiments, such as Figure 5 , Figure 7 As shown, the pressure tongue 19 is an inverted L-shape, with its horizontal branch located below the guide shaft 16 and connected to the bottom end of the guide shaft 16 via a fixing screw 20. Its vertical branch is located behind the fixing screw 20 and in front of the welding hole 151. This design can both press down on the upper surface of the 5G base station surge protector product, ensuring that the product fits tightly against the bottom surface of the contoured groove 24, and will not affect the normal use of the welding hole 151.

[0049] In practice, under the blocking action of the guide shaft cover 18, the bottom end of the guide shaft 16 can elastically extend and retract within the sliding seat 15, thereby driving the pressure tongue 19 at the bottom end of the guide shaft 16 to generate a certain elastic downward pressure. This design gives the pressure tongue 19 height-adaptive properties, allowing it to automatically adjust its downward pressure position according to the workpiece height, effectively compensating for product inconsistencies or manual clamping deviations, and improving the stability of the welding process.

[0050] like Figures 4-7 As shown, the elastic light-blocking assembly includes a shoulder screw 21, a light-blocking block spring 22, and a light-blocking block 23. The shoulder screw 21 is installed at the rear of the top surface of the sliding seat 15, the portion of which extends downward through the sliding seat 15 is fitted with the light-blocking block spring 22, and the bottom end is connected to the light-blocking block 23. Furthermore, the pressure tongue 19 and the light-blocking block 23 are arranged around the area below the welding hole 151. Preferably, two shoulder screws 21 are provided, symmetrically arranged on both sides of the rear end of the welding hole 151.

[0051] In other embodiments, such as Figure 4 , Figure 5 As shown, the light-blocking block 23 adopts a three-sided structure design, including a rear plate and two side plates connected to it; the upper part of the rear plate is installed at the bottom end of the shoulder screw 21, and the lower part is located below and behind the welding hole 151; the two side plates are respectively located on both sides below the welding hole 151. This arrangement allows the light-blocking block 23 to form a U-shaped protective area around the welding hole 151, which can effectively prevent the laser from spreading outward and burning the surface of the 5G base station surge protector during welding, without affecting the normal use of the welding hole 151.

[0052] In practice, under the action of the light-blocking block spring 22, the light-blocking block 23 installed on the shoulder screw 21 can generate a certain elastic downward pressure, giving it height-difference self-adaptability and allowing it to automatically adjust the light-blocking position according to the height of the workpiece to be welded. This design effectively compensates for deviations caused by product inconsistencies or manual clamping operations, improving the process error tolerance.

[0053] It should be noted that the vertical branches of the pressure tongue 19, together with the lower part of the rear plate and the two side plates of the light-blocking block 23, form a four-sided protective structure, arranged around the area below the welding hole 151, respectively realizing the functions of pressing and blocking light for the 5G base station surge protector product. Furthermore, both the pressure tongue 19 and the light-blocking block 23 adopt an elastic design, which reduces the requirements for product consistency and increases compatibility with products with poor consistency, thereby reducing the precision requirements for manual clamping operations.

[0054] In other embodiments, the sliding seat 15 has symmetrical oblong holes 152 at both ends, and is mounted on both sides of the top surface of the boss through these oblong holes 152. In specific implementations, when the pressing position of the 5G base station surge protector product needs to be changed or adjusted, it is not necessary to replace the entire pressing and light-blocking mechanism 25; only the position of the sliding seat 15 within the mounting hole needs to be adjusted through the oblong holes 152 on the sliding seat 15. This design allows for simultaneous adjustment of the pressing position of the elastic pressure tongue assembly on the product and the light-blocking position of the elastic light-blocking assembly on the product, making the operation simple and convenient.

[0055] In other embodiments, such as Figure 1 , Figure 2 As shown, the rear sides of the base 2 and the top seat 12 are connected by a hinge 11. In specific implementation, the entire fixture is placed on the base plate 1, and the base 2 is connected to the top seat 12 via the hinge 11, forming an openable structure. This design provides convenient operating space for replacing the 5G base station surge protector product in the contoured groove 24 and maintaining the pressing light-blocking mechanism 25, enabling quick and convenient replacement of the 5G base station surge protector product in the contoured groove 24 and the pressing light-blocking mechanism 25 in the mounting hole. Furthermore, the opening and closing mechanism connected by the hinge ensures the stability of the fixture and improves the efficiency of equipment maintenance and product replacement.

[0056] In other embodiments, such as Figure 1 , Figure 2 As shown, pin positioning plates 3 are respectively installed on the left and right sides of the base 2; the pin positioning plates 3 have positioning holes. Pins 4 are respectively installed on the left and right ends of the top surface of the base plate 1; the pins 4 can cooperate with the positioning holes of the corresponding pin positioning plates 3. In specific implementation, the two pins 4 on the base plate 1 are used as positioning references, and the positions of the two pins 4 and the positioning holes of the two pin positioning plates 3 correspond one-to-one. By inserting the pins 4 into the corresponding positioning holes, the base 2 is accurately positioned and installed on the base plate 1, while facilitating quick assembly and disassembly. This structural design ensures positioning accuracy and improves the convenience of fixture assembly and disassembly.

[0057] In other embodiments, such as Figure 1 , Figure 2 As shown, handles 6 are installed on the left and right sides of the base 2, making it easy for operators to lift the base 2. In practice, the two handles 6, together with the two pins 4 and the two pin positioning plates 3, enable the quick placement and removal of the clamp at the designated position on the base plate 1, making the installation and positioning process simple and efficient.

[0058] In other embodiments, such as Figure 1As shown, convex corrective wedges 5 are respectively installed at the left and right ends of the top surface of the base 2, and concave corrective wedges 13 are respectively installed at the left and right ends of the bottom surface of the top seat 12; and the convex corrective wedges 5 can cooperate with the corresponding concave corrective wedges 13. In specific implementation, the positions of the two convex corrective wedges 5 and the two concave corrective wedges 13 correspond one-to-one. When the top seat 12 and the base 2 are closed, the cooperation between the two can automatically correct the left and right position deviations generated by the top seat 12 and the base 2 during the closing process, ensuring accurate installation positioning.

[0059] In other embodiments, such as Figure 1 , Figure 2 As shown, the front end of the base 2 is connected to a mounting base 7; a self-locking buckle 9, a rotating shaft 8, and a buckle spring 10 are placed inside the mounting base 7. The self-locking buckle 9 is placed vertically and has a hook at the top; the rotating shaft 8 is inserted at both ends into the left and right sides of the mounting base 7, and its middle section passes through the middle of the self-locking buckle 9; the buckle spring 10 is positioned between the rear side of the mounting base 7 and the bottom rear side of the self-locking buckle 9. Figure 2 As shown, a card 14 is installed at the front end of the top seat 12, and the card 14 can lock with the self-locking buckle 9 to achieve reliable locking of the base 2 and the top seat 12.

[0060] In practice, the self-locking buckle 9 and the card 14 are precisely aligned. When the top seat 12 and the base 2 are closed, the card 14 on the top seat 12 contacts the self-locking buckle 9 on the base 2. The card 14 first presses the self-locking buckle 9 downward, forcing it to swing outward around the pivot 8 within the mounting base 7. As the closing action continues, the card 14 gradually slides to a position below the hook of the self-locking buckle 9. At this point, the self-locking buckle 9 is no longer in contact with the card 14. Under the reset action of the buckle spring 10, the self-locking buckle 9 automatically swings inward, forming a reliable lock between the hook and the card 14, thus tightly closing the top seat 12 and the base 2 together. This mechanism achieves the functions of rapid opening and closing, precise positioning, and automatic locking of the clamp.

[0061] In summary, the working process of this utility model is as follows: First, using the pin 4 on the substrate 1 as the positioning reference, the handles 6 on both sides of the base 2 and the pin positioning plate 3 achieve rapid positioning and installation, accurately placing the base 2 on the substrate 1, thereby quickly fixing the approximate position of the product. Then, the 5G base station surge protector product is placed in the contour groove 24 of the base 2. Next, the top seat 12 is closed to the base 2. During the closing process, the convex correction wedge 5 and the concave correction wedge 13 cooperate to automatically correct the left and right position deviations of the top seat 12 and the base 2; simultaneously, the card 14 and the self-locking buckle 9 form an automatic lock, achieving rapid positioning and self-locking functions. After the top seat 12 and the base 2 are closed, the pressure tongue 19 and the light-blocking block 23 perform a dual function on the 5G base station surge protector product, preventing displacement of the 5G base station surge protector and blocking the outward diffusion of laser light during product welding, significantly improving the welding yield of the 5G base station surge protector. Furthermore, the position of the pressing and blocking light mechanism 25 can be flexibly adjusted through the oblong hole 152 of the sliding seat 15 to adapt to different product specifications without replacing the pressing and blocking light mechanism 25. The above design integrates positioning, correction, self-locking and adjustment functions, which greatly improves the accuracy and efficiency of welding 5G base station surge protectors.

[0062] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A special fixture for laser welding of 5G base station surge protectors, characterized in that, Includes a substrate, a base movably mounted on the substrate, and a top mount movably mounted on the base; The base has several contoured grooves; the shape of the contoured grooves matches the outline of the 5G base station surge protector. The top seat has several mounting holes, and the mounting holes and the contoured grooves are positioned correspondingly; the inner circumference of the mounting holes is provided with a boss, and a pressing light-blocking mechanism is installed thereon; the pressing light-blocking mechanism includes a sliding seat, and an elastic pressure tongue assembly and an elastic light-blocking assembly installed thereon; The sliding seat has a welding hole in the middle and the left and right ends are installed on both sides of the top surface of the boss. The elastic pressure tongue assembly includes a guide shaft cover, a guide shaft with a guide ring, a guide shaft spring, a pressure tongue, and a fixing screw; the guide shaft cover is installed on the front of the top face of the sliding seat; the portion of the guide shaft below the guide ring extends downward through the sliding seat and is connected to the pressure tongue by the fixing screw; the portion of the guide shaft above the guide ring is fitted with a guide shaft spring and extends upward through the guide shaft cover; the guide shaft spring is located between the top surface of the guide ring and the inner bottom surface of the guide shaft cover. The elastic light-blocking assembly includes a shoulder screw, a light-blocking block spring, and a light-blocking block; the shoulder screw is installed on the rear of the top surface of the sliding seat, and the portion of the shoulder screw that extends downward through the sliding seat is fitted with a light-blocking block spring, with a light-blocking block connected to the bottom end; furthermore, the pressure tongue and the light-blocking block are arranged around the area below the welding hole.

2. The laser welding fixture for surge protectors according to claim 1, characterized in that, The pressure tongue is inverted L-shaped, with its horizontal branch located below the guide shaft and connected to the bottom end of the guide shaft by a fixing screw, and its vertical branch located behind the fixing screw and in front of the welding hole.

3. A special fixture for laser welding of surge protectors according to claim 1 or 2, characterized in that, The light-blocking block has a three-sided structure, including a rear plate and two side plates connected to it; the upper part of the rear plate is installed at the bottom end of the shoulder screw, and the lower part is located below the welding hole on the rear side; the two side plates are located on both sides below the welding hole respectively.

4. The laser welding fixture for surge protectors according to claim 1, characterized in that, The sliding seat has symmetrical waist-shaped holes at both ends and is installed on both sides of the top surface of the boss through the waist-shaped holes.

5. A special fixture for laser welding of surge protectors according to claim 1, characterized in that, The base has pin positioning plates installed on its left and right sides respectively; the pin positioning plates have positioning holes; the base plate has pins installed on its left and right ends respectively, and the pins can cooperate with the positioning holes of the corresponding pin positioning plates.

6. A special fixture for laser welding of surge protectors according to claim 1 or 5, characterized in that, Handles are installed on the left and right sides of the base.

7. A special fixture for laser welding of surge protectors according to claim 1, characterized in that, The left and right ends of the top surface of the base are respectively equipped with convex correction wedges; the left and right ends of the bottom surface of the top seat are respectively equipped with concave correction wedges, and the convex correction wedges can cooperate with the corresponding concave correction wedges.

8. A special fixture for laser welding of surge protectors according to claim 1 or 7, characterized in that, The base is connected to a mounting seat at its front end; a self-locking buckle, a rotating shaft, and a buckle spring are placed inside the mounting seat; the self-locking buckle is placed vertically and has a hook at the top; the two ends of the rotating shaft are inserted into the left and right sides of the mounting seat, and the middle part passes through the middle of the self-locking buckle; the buckle spring is placed on the rear side of the bottom of the self-locking buckle; a card is installed at the front end of the top seat, and the card can lock with the self-locking buckle.

9. A special fixture for laser welding of surge protectors according to claim 1, characterized in that, The rear sides of the base and the top are connected by a hinge.

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