An automatic welding equipment for P-plates

Abstract

This utility model discloses an automatic P-board welding device, relating to the field of welding fixture technology. The device facilitates the insertion of the welding needle cross-section through a cavity, allowing welding only at the pin and circuit board junctions, preventing damage to other areas. The welding cavity provides a closed welding environment for the relay, circuit board, and pins, isolating external interference. The cover plate positioning holes and pad screw holes are fastened with screws, ensuring alignment accuracy after repeated disassembly and assembly. Chamfered edges on the positioning holes guide the cover plate to quick alignment, preventing misalignment. Furthermore, the shape of the cavity matches the welding needle cross-section, limiting the vertical movement range of the welding needle, isolating the welding area from the non-welding area, preventing solder slag from splashing onto the relay coil or sensitive components, and ensuring the welding needle only contacts the junction of the pin and circuit board, avoiding accidental soldering of adjacent contacts. The pads are equipped with patches that disperse welding stress, reducing the risk of solder joint cracking due to thermal expansion and contraction or mechanical vibration.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically to an automatic welding device for P-plates. Background Technology

[0002] P-board automatic welding equipment is an automatic welding fixture for relay circuit boards and pins. It is a special tool used in production lines to achieve high-precision and high-efficiency welding between relay pins and circuit boards. It fixes the position of the relay and circuit board through a mechanical structure, and works with welding equipment to complete the welding process. The fixture accurately fixes the relative position of the relay and circuit board to ensure that the pins are aligned with the pads.

[0003] The soldering points of existing relay circuit boards and pin automatic soldering fixtures are not fixed, and the movement trajectory of the soldering head cannot be displayed. Poor contact between the pins and the pads leads to insufficient soldering strength, causing relay failure, such as increased contact resistance or open circuits. Solder overflow or pin misalignment can cause short circuits between adjacent solder points, especially on circuit boards with densely packed relays, leading to equipment burnout. Under vibration or temperature shock, solder points are prone to cracking, affecting product lifespan. Problems such as soldering head misalignment, abnormal speed, or uneven heating cannot be captured in real time through visual or data feedback, resulting in batches of defective products, which in turn damages other components on the circuit board. Utility Model Content

[0004] This invention provides an automatic P-board welding device, which has the advantage of stable positioning welding between relay circuit boards and pins, thus solving the problem of no limit on the welding points between relay circuit boards and pins.

[0005] To achieve stable positioning and soldering between relay circuit boards and pins, this utility model provides the following technical solution: an automatic P-board soldering device, comprising a soldering P-board and a soldering needle gun, characterized in that: the soldering P-board has a solder pad inside, the solder pad has evenly distributed soldering cavities inside, a relay is installed on the inner wall of several soldering cavities, the relay has a circuit board inside, the solder pad has a patch inside, the solder pad has a pin inside, and one end of the pin is in active contact with the outer surface of the circuit board.

[0006] As a preferred embodiment of this utility model, the outer surface of the pad is provided with screw holes evenly distributed, and two cover plates are movably installed on the outer surface of the pad.

[0007] As a preferred embodiment of this utility model, positioning holes are evenly distributed on the outer surfaces of the two cover plates.

[0008] As a preferred embodiment of this utility model, both of the cover plates are provided with heat dissipation grooves inside.

[0009] As a preferred embodiment of this utility model, an insertion cavity is formed between the outer surface of the solder pad and the outer surface of the cover plate.

[0010] As a preferred embodiment of this utility model, a welding needle is provided on one end surface of the output end of the welding needle gun.

[0011] As a preferred embodiment of this utility model, the welding needle head is provided with a cross section.

[0012] Compared with the prior art, this utility model provides an automatic welding equipment for P-plates, which has the following beneficial effects:

[0013] 1. This P-board automatic welding equipment uses a cavity to facilitate the insertion of the welding pin cross-section, thus welding only the pins and the circuit board, without causing welding damage to other positions. The welding cavity provides a closed welding environment for relays, circuit boards and pins, isolating external interference. The cover plate positioning hole and the screw hole of the pad are fastened with screws to ensure the alignment accuracy after repeated disassembly and assembly. The edge of the positioning hole is chamfered to guide the cover plate to quickly align and avoid misalignment.

[0014] 2. This P-board automatic welding equipment limits the vertical movement range of the welding needle by matching the shape of the cavity with the cross-section of the welding needle, isolates the welding area from the non-welding area, prevents welding slag from splashing onto the relay coil or sensitive components, and ensures that the welding needle only contacts the junction of the pin and the circuit board, avoiding accidental welding of adjacent contacts.

[0015] 3. This P-board automatic soldering equipment uses pads installed inside the pads. The pads act as an intermediate layer between the pads and the pins, which can disperse the soldering stress and reduce the risk of solder joint cracking caused by thermal expansion and contraction or mechanical vibration, making the connection stronger. The solder mask layer or structural limiting design at the edge of the pads can precisely control the solder flow range, prevent the solder from spreading to non-soldering areas, and avoid short circuits or interference between components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention from another perspective;

[0019] Figure 4 This is a schematic diagram of the external structure of the relay of this utility model;

[0020] Figure 5 This is a schematic diagram of the overall structure of the welding needle gun of this utility model.

[0021] In the diagram: 1. Soldering P-board; 2. Circuit board; 3. Pin; 4. Solder pad; 5. Surface mount; 6. Screw hole; 7. Positioning hole; 8. Heat sink; 9. Cavity; 10. Soldering gun; 11. Soldering needle; 12. Cross-section; 13. Cover plate; 14. Soldering cavity; 15. Relay. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model discloses an automatic P-plate welding device, including a welding P-plate 1 and a welding needle gun 10. The welding P-plate 1 has a welding pad 4 inside, and welding cavities 14 are evenly distributed inside the welding pad 4. Relays 15 are installed on the inner walls of several welding cavities 14. A circuit board 2 is installed inside the relays 15. A patch 5 is installed inside the welding pad 4, and pins 3 are installed inside the welding pad 4. One end of the pin 3 is in movable contact with the outer surface of the circuit board 2. Screw holes 6 are evenly distributed on the outer surface of the welding pad 4. Two cover plates 13 are movably installed on the outer surface of the welding pad 4. Positioning holes 7 are evenly distributed on the outer surface of the two cover plates 13. Each of the two cover plates 13 has a venting mechanism inside. A cavity 9 is formed between the outer surface of the hot slot 8 and the outer surface of the pad 4 and the outer surface of the cover plate 13. The cavity 9 facilitates the insertion of the cross section 12 of the soldering needle 11, so that only the soldering joint of the pin 3 and the circuit board 2 is soldered, without causing soldering damage to other positions. The soldering cavity 14 provides a closed soldering environment for the relay 15, the circuit board 2 and the pin 3, isolating external interference. The cover plate 13 is made of high temperature resistant aluminum alloy with a wall thickness of 2-3mm, and the cover plate 13 is provided with heat dissipation slots 8 to ensure thermal stability. The positioning hole 7 of the cover plate 13 is fastened to the screw hole 6 of the pad 4 with screws to ensure the alignment accuracy after repeated disassembly and assembly. The edge of the positioning hole 7 is chamfered to guide the cover plate 13 to quickly align and avoid deviation.

[0024] The output end of the welding needle gun 10 is provided with a welding needle 11. The welding needle 11 has a cross section 12. The shape of the insertion cavity 9 matches the cross section 12 of the welding needle 11, which limits the vertical range of motion of the welding needle 11, isolates the welding area from the non-welding area, prevents welding slag from splashing onto the relay 15 coil or sensitive element, and ensures that the welding needle 11 only contacts the junction of the pin 3 and the circuit board 2, avoiding accidental soldering of adjacent contacts.

[0025] The working principle and usage process of this utility model are as follows: When it is necessary to solder the circuit board 2 of the relay 15 to the pin 3, several relays 15 are placed in the soldering cavity 14, the patch 5 is placed directly in the solder pad 4, and the positioning hole 7 of the cover plate 13 is aligned with the screw hole 6, thereby fixing the cover plate 13 onto the solder pad 4. This stabilizes the relay 15, pin 3, and circuit board 2 within the soldering cavity 14, and an insertion cavity 9 is formed between the outer surface of the solder pad 4 and the outer surface of the cover plate 13. The insertion cavity 9 facilitates the insertion of the cross section 12 of the soldering needle 11. The welding cavity 14 provides a closed welding environment for the relay 15, circuit board 2 and pin 3, isolating external interference. The cover plate 13 is made of high temperature resistant aluminum alloy with a wall thickness of 2-3mm and has heat dissipation grooves 8 to ensure thermal stability. The positioning hole 7 of the cover plate 13 is fastened to the screw hole 6 of the pad 4 with screws to ensure the alignment accuracy after repeated disassembly and assembly. The edge of the positioning hole 7 is chamfered to guide the cover plate 13 to be quickly aligned and avoid deviation.

[0026] The shape of the cavity 9 matches the cross section 12 of the soldering needle 11, limiting the vertical range of motion of the soldering needle 11, isolating the soldering area from the non-soldering area, preventing solder slag from splashing onto the relay 15 coil or sensitive components, ensuring that the soldering needle 11 only contacts the junction of the pin 3 and the circuit board 2, and avoiding missoldering of adjacent contacts.

[0027] Furthermore, a patch 5 is installed inside the pad 4. As an intermediate layer between the pad 4 and the pin 3, the patch 5 can disperse the soldering stress, reduce the risk of solder joint cracking caused by thermal expansion and contraction or mechanical vibration, and make the connection more robust. The solder mask layer or structural limiting design at the edge of the patch 5 can precisely control the solder flow range, prevent the solder from spreading to non-soldering areas, and avoid short circuits or interference between components.

[0028] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for P-plates, comprising a welding P-plate (1) and a welding needle gun (10), characterized in that: The welding P-plate (1) has a solder pad (4) inside. The solder pad (4) has evenly distributed welding cavities (14) inside. A relay (15) is installed on the inner wall of several welding cavities (14). The relay (15) has a circuit board (2) inside. The solder pad (4) has a patch (5) inside. The solder pad (4) has a pin (3) inside. One end of the pin (3) is in contact with the outer surface of the circuit board (2).

2. The automatic welding equipment for P-plates according to claim 1, characterized in that: The outer surface of the pad (4) is provided with screw holes (6) evenly distributed, and two cover plates (13) are movably installed on the outer surface of the pad (4).

3. The automatic welding equipment for P-plates according to claim 2, characterized in that: The outer surfaces of the two cover plates (13) are evenly provided with positioning holes (7).

4. The automatic welding equipment for P-plates according to claim 3, characterized in that: Both of the cover plates (13) have heat dissipation grooves (8) inside.

5. The automatic welding equipment for P-plates according to claim 4, characterized in that: A cavity (9) is formed between the outer surface of the pad (4) and the outer surface of the cover plate (13).

6. The automatic welding equipment for P-plates according to claim 1, characterized in that: The welding needle gun (10) has a welding needle head (11) on one end of its output end surface.

7. The automatic welding equipment for P-plates according to claim 6, characterized in that: The welding needle (11) has a cross section (12).

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