A circuit board clamping device facilitating spot welding of a circuit board

Abstract

The utility model relates to clamping device technical field, the present application discloses a kind of circuit board clamping device of convenient circuit board processing spot welding, including welding platform, the detachable placement table is fixed in the welding platform top surface, the welding platform top surface of the placement table rear side is provided with movable time positioning backplate, the symmetrical fixed clamping plate of the placement table two sides is provided, two the fixed clamping plate bottom surface is fixed with welding platform slidably connected, for clamping fixed circuit board, the utility model can quickly align circuit board front and rear position when placing circuit board, the fixed clamping plate of two sides is synchronously relatively moved, i.

Description

Technical Field

[0001] This utility model application relates to the field of clamping device technology, specifically a circuit board clamping device that facilitates spot welding during circuit board processing. Background Technology

[0002] A circuit board is a substrate used to support and connect electronic components. It achieves electrical connection and mechanical fixation through conductive lines and is a core component of modern electronic devices. It is a substrate on which conductive copper foil lines are laid on an insulating substrate through printing and etching technology. Spot welding is an important processing method for circuit boards. By heating the circuit board locally, the metals are melted and joined together, thereby realizing the electrical connection of the internal components of the circuit board and ensuring the smooth transmission of current and signals on the circuit board.

[0003] When spot welding circuit boards, they need to be aligned and clamped to ensure stability during spot welding. Existing clamping devices are inconvenient for precise positioning of circuit boards during use, and the circuit boards need to be placed flat on the welding table during clamping. After welding, it is inconvenient to remove the circuit boards that are seamlessly attached to the welding table, which reduces the practicality of the clamping device. Utility Model Content

[0004] To address the problems of inconvenient alignment and loading / unloading of existing circuit board clamping devices, this invention provides a circuit board clamping device that facilitates spot welding during circuit board processing, thus solving the aforementioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A circuit board clamping device for facilitating spot welding of circuit boards includes a welding table, a detachable placement platform fixed on the top surface of the welding table, a movable positioning back plate on the top surface of the welding table behind the placement platform, and fixed clamping plates symmetrically arranged on both sides of the placement platform. The bottom surfaces of the two fixed clamping plates are slidably connected to the welding table for clamping and fixing the circuit board.

[0006] Furthermore, a connecting screw tube is threaded onto the bottom of the placement platform, and a sealing gasket is glued to the inside of the placement platform on the top surface of the connecting screw tube. The connecting screw tube is connected through to the top of the welding platform. The bottom surface of the placement platform is T-shaped, and a ventilation groove is opened inside the top of the placement platform. The ventilation groove is connected through to the inside of the connecting screw tube.

[0007] Furthermore, the ventilation channel is composed of a circular bottom and a top of several branch channels, with a filter screen fixed on the top surface of each channel, and the top surface of each filter screen is flush with the top surface of the placement platform.

[0008] Furthermore, a bellows box is fixedly installed inside the welding station below the connecting screw tube. A fan is installed inside the bellows box, with the fan inlet facing the connecting screw tube. An air outlet is opened on the bottom surface of the bellows box, and another filter screen is fixed inside the air outlet. A through groove is opened inside the welding station to cooperate with the connecting screw tube and the bellows box.

[0009] Furthermore, connecting rods are fixed to the bottom surfaces of the positioning back plate and the two fixed clamping plates. A movable sleeve is fixed to the bottom surface of each connecting rod. Each movable sleeve is slidably fitted onto a movable screw. The movable screw is rotatably connected to the inside of the welding table through a bearing. The ends of the two movable screws away from the placement table extend to the outside of the welding table. The end of the movable screw below the fixed clamping plate extending to the outside of the welding table is fixed to the output end of the servo motor. The servo motor is mounted on the welding table. A crank handle is fixed to the end of the movable screw below the positioning back plate extending to the outside of the welding table.

[0010] Furthermore, protective rubber pads are glued to the opposite sides of the two fixed clamping plates, and threaded holes that mate with the moving screws are opened inside the two movable sleeves below the two fixed clamping plates. The internal threads of the two screw holes are in opposite directions.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, the positioning back plate on the rear side can quickly align the front and rear positions of the circuit board when placing it. The fixing clamps on both sides move synchronously and relative to each other, so that the circuit board can be aligned and clamped on the placement table. This solves the problems of inconvenient alignment and loading / unloading of existing circuit board clamping devices, and improves the practicality and convenience of the clamping device.

[0012] 2. In this utility model, the ventilation groove inside the placement platform allows the circuit board to adhere to the top surface of the placement platform by adsorption. It can also dissipate heat and cool the bottom surface of the circuit board during soldering, which further improves the stability of the circuit board placement and avoids the circuit board from overheating during soldering, thus preventing it from affecting subsequent processing. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a circuit board clamping device according to an embodiment of this application; Figure 2 yes Figure 1 A schematic cross-sectional view of the circuit board clamping device in the embodiment shown. Figure 3 yes Figure 1 The schematic diagram shows a side cross-sectional view of the circuit board clamping device structure in the embodiment shown.

[0015] The meanings of the labels in the attached diagram are as follows: 1. Welding table; 2. Placement table; 3. Connecting screw; 4. Ventilation groove; 5. Filter screen; 6. Sealing gasket; 7. Air box; 8. Fan; 9. Air outlet; 10. Positioning back plate; 11. Fixing clamp; 12. Protective gasket; 13. Connecting rod; 14. Moving sleeve; 15. Adjusting screw; 16. Servo motor; 17. Crank handle. Detailed Implementation

[0016] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Reference Figure 1 , Figure 2 and Figure 3 A circuit board clamping device for easy spot welding of circuit boards includes a welding table 1, a detachable placement table 2 fixed to the top surface of the welding table 1, a connecting screw tube 3 threadedly connected to the bottom of the placement table 2, a sealing gasket 6 glued to the inside of the placement table 2 on the top surface of the connecting screw tube 3, the connecting screw tube 3 being connected through to the top of the welding table 1, the bottom surface of the placement table 2 being T-shaped, and a ventilation groove 4 being formed in the top of the placement table 2, the ventilation groove 4 being a circular bottom and a top composed of several branch channels, each channel having a filter screen 5 fixed to its top surface, the top surface of each filter screen 5 being flush with the top surface of the placement table 2, the ventilation groove 4 being connected to the connecting screw tube 3. The internal structure of the spiral tube 3 is continuously connected. The welding station 1 below the spiral tube 3 is internally fixed with a bellows 7. A fan 8 is installed inside the bellows 7. The air inlet of the fan 8 faces the spiral tube 3. An air outlet 9 is opened on the bottom surface of the bellows 7. Another filter screen 5 is fixed inside the air outlet 9. The welding station 1 has a through groove that matches the internal structure of the spiral tube 3 and the bellows 7. A movable positioning back plate 10 is provided on the top surface of the welding station 1 behind the placement platform 2. Fixed clamps 11 are symmetrically arranged on both sides of the placement platform 2. The bottom surfaces of the two fixed clamps 11 are fixedly and slidably connected to the welding station 1 for clamping and fixing the circuit board.

[0018] Specifically, when it is necessary to clamp and fix the circuit board, place the circuit board on the top surface of the placement platform 2. During placement, the rear side of the circuit board abuts against the positioning back plate 10. Then, turn on the servo motor 16, so that the servo motor 16 drives the two fixing clamps 11 to clamp the circuit board on opposite sides. At the same time, turn on the fan 8. The fan 8 draws a negative pressure inside the ventilation groove 4 through the connecting screw tube 3. Under the negative pressure state, the circuit board is attracted to the top surface of the placement platform 2, and heat is dissipated from the circuit board. After the soldering is completed, the servo motor 16 runs, driving the fixing clamps 11 away from the placement platform 2, so that the circuit board can be removed from the placement platform 2. When it is necessary to clean or replace the placement platform 2, twist the placement platform 2 to separate the placement platform 2 from the connecting screw tube 3, so that the placement platform 2 can be removed and disassembled or replaced separately.

[0019] As an optimization solution, such as Figure 3 As shown, connecting rods 13 are fixed to the bottom surfaces of the positioning back plate 10 and the two fixed clamping plates 11. Each connecting rod 13 has a movable sleeve 14 fixed to its bottom surface. Each movable sleeve 14 is slidably fitted onto a movable screw 15. The movable screw 15 is rotatably connected to the inside of the welding table 1 via a bearing. Protective pads 12 are glued to the opposite sides of the two fixed clamping plates 11. The two movable sleeves 14 below the two fixed clamping plates 11 have threaded holes that mate with the movable screw 15. The threads inside the two screw holes are in opposite directions. The ends of the two movable screws 15 away from the placement table 2 extend to the outside of the welding table 1. The end of the movable screw 15 below the fixed clamping plate 11 that extends to the outside of the welding table 1 is fixed to the output end of the servo motor 16. The servo motor 16 is mounted on the welding table 1. A crank handle 17 is fixed to the end of the movable screw 15 below the positioning back plate 10 that extends to the outside of the welding table 1.

[0020] Specifically, before fixing the circuit board, turn the crank handle 17 to drive the moving screw 15 to rotate. When the moving screw 15 rotates, it drives the positioning back plate 10 to move through the moving sleeve block 14 and the connecting rod 13. This adjusts the distance between the positioning back plate 10 and the placement stage 2 according to the size of the circuit board. After the adjustment is completed, when the servo motor 16 runs, it drives the moving screw 15 to rotate. When the moving screw 15 rotates, under the action of the opposite threads, it drives the two moving sleeve blocks 14 to move relative to or in opposite directions, thereby driving the fixing clamp 11 to clamp or loosen the circuit board.

[0021] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A circuit board clamping device for facilitating spot welding during circuit board processing, characterized in that: The device includes a welding table (1), a detachable placement platform (2) fixed on the top surface of the welding table (1), a movable positioning back plate (10) on the top surface of the welding table (1) on the rear side of the placement platform (2), and fixed clamps (11) symmetrically arranged on both sides of the placement platform (2). The bottom surfaces of the two fixed clamps (11) are fixedly and slidably connected to the welding table (1) for clamping and fixing the circuit board.

2. The circuit board clamping device for facilitating circuit board processing and spot welding according to claim 1, characterized in that: The bottom of the placement platform (2) is threaded with a connecting screw tube (3). A sealing gasket (6) is glued and fixed inside the placement platform (2) on the top surface of the connecting screw tube (3). The connecting screw tube (3) is connected through to the top of the welding platform (1). The bottom surface of the placement platform (2) is set in a T shape. A ventilation groove (4) is opened in the top of the placement platform (2). The ventilation groove (4) is connected through to the inside of the connecting screw tube (3).

3. The circuit board clamping device for facilitating circuit board processing and spot welding according to claim 2, characterized in that: The ventilation channel (4) is a channel with a circular bottom and several branch channels at the top. Each channel has a filter screen (5) fixed on its top surface, and the top surface of each filter screen (5) is flush with the top surface of the placement platform (2).

4. The circuit board clamping device for facilitating circuit board processing and spot welding according to claim 2, characterized in that: A bellows (7) is fixed inside the welding station (1) below the connecting screw tube (3). A fan (8) is installed inside the bellows (7). The air inlet of the fan (8) faces the connecting screw tube (3). An air outlet (9) is opened on the bottom surface of the bellows (7). Another filter screen (5) is fixed inside the air outlet (9). A through groove is opened inside the welding station (1) to cooperate with the connecting screw tube (3) and the bellows (7).

5. The circuit board clamping device for facilitating circuit board processing and spot welding according to claim 1, characterized in that: The bottom surfaces of the positioning back plate (10) and the two fixed clamping plates (11) are all fixed with connecting rods (13). The bottom surface of each connecting rod (13) is fixed with a movable sleeve (14). Each movable sleeve (14) is slidably sleeved on a movable screw (15). The movable screw (15) is rotatably connected to the inside of the welding table (1) through a bearing. The ends of the two movable screws (15) away from the placement table (2) extend to the outside of the welding table (1). The end of the movable screw (15) below the fixed clamping plate (11) extending to the outside of the welding table (1) is fixed to the output end of the servo motor (16). The servo motor (16) is mounted on the welding table (1). The end of the movable screw (15) below the positioning back plate (10) extending to the outside of the welding table (1) is fixed with a crank (17).

6. The circuit board clamping device for facilitating circuit board processing and spot welding according to claim 5, characterized in that: Protective pads (12) are glued to the opposite sides of the two fixed clamps (11). The two movable sleeves (14) below the two fixed clamps (11) have threaded holes that cooperate with the movable screws (15). The internal threads of the two screw holes are in opposite directions.

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