Welding fixture for welding touch spring

Abstract

The utility model discloses a welding fixture for welding a touch spring, which comprises a support plate, and a positioning plate is adjustably mounted at the top of the support plate and used for positioning a circuit board; the two sliding plates are symmetrically arranged in the supporting plate in a sliding mode, and an adjusting part is arranged between the two sliding plates and used for adjusting the distance between the two sliding plates; the circuit board clamp has the advantages that the distance between the two sliding plates can be conveniently adjusted through the two-way lead screw and the driving disc of the adjusting part so that the circuit board clamp can adapt to circuit boards of different lengths, the flexibility of the clamp is improved, and due to the fact that the distance between the positioning cylinder and the sliding plates can be adjusted, the circuit board clamp is convenient to use. The clamp can be suitable for various circuit boards and springs with different sizes and types, and the universality of the clamp is improved; the positioning cylinder is in threaded connection with the mounting hole in the middle of the sliding plate, so that the positioning cylinder can be replaced according to the size of the spring, and the adaptability of the clamp is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of electronic scale processing technology, specifically a welding fixture for welding touch springs. Background Technology

[0002] In the input panel of an electronic scale, springs provide a stable electrical connection. Since the panel buttons or touch areas require frequent operation, the soldered springs, through their elasticity, ensure a continuous and reliable electrical connection, reducing contact problems caused by mechanical fatigue or component movement. Therefore, springs need to be soldered onto the circuit board of the electronic scale's input panel.

[0003] In actual processing, before soldering the touch spring to the circuit board, the touch spring is inserted into the circuit board. However, the spring is easy to fall off during operation and cannot be fixed, which is inconvenient for subsequent soldering operations. Summary of the Invention

[0004] The purpose of this invention is to provide a welding fixture for welding touch springs, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a welding fixture for welding touch springs, comprising:

[0006] The support plate has an adjustable positioning plate on its top for positioning the circuit board.

[0007] Two sliding plates are provided and symmetrically slidably placed inside the support plate. An adjustment part is provided between the two sliding plates to adjust the distance between the two sliding plates.

[0008] The positioning cylinder is detachably installed in the middle of the sliding plate and is used to position the spring.

[0009] A fixing block is rotatably positioned on top of the sliding plate. The top of the fixing block is provided with an elastic part for pressing the circuit board.

[0010] Preferably, the support plate has a U-shaped structure, and both sides of the inner wall of the support plate are provided with limiting grooves, and both sides of the sliding plate are fixed with limiting protrusions that cooperate with the limiting grooves.

[0011] Preferably, a fixing plate is fixedly connected to the middle of the support plate, and an adjusting bolt is threadedly connected to the middle of the fixing plate. One end of the adjusting bolt is rotatably connected to the positioning plate, and the positioning plate is slidably connected to the sliding plate.

[0012] Preferably, the adjustment part includes a bidirectional lead screw and a drive disc fixed to the middle of the bidirectional lead screw, and the two ends of the bidirectional lead screw are respectively threaded to the corresponding sliding plates.

[0013] Preferably, the sliding plate has a mounting hole in the middle, and the positioning cylinder is threaded into the mounting hole for replacing the positioning cylinder according to the size of the spring.

[0014] Preferably, a fixed shaft is fixedly connected to the outer side of the sliding plate, and the fixed pressure block is movably installed on the outer side of the fixed shaft.

[0015] Preferably, the elastic part is a return spring, which is sleeved on the outside of the fixed shaft.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the distance between the two sliding plates can be easily adjusted by the bidirectional lead screw and drive disc of the adjustment part to adapt to circuit boards of different lengths, improving the flexibility of the clamp. Since the distance between the positioning cylinder and the sliding plate can be adjusted, the clamp can be used for various circuit boards and springs of different sizes and types, improving the versatility of the clamp. The positioning cylinder is threadedly connected to the mounting hole in the middle of the sliding plate, allowing the positioning cylinder to be replaced according to the size of the spring, enhancing the adaptability of the clamp. The positioning plate is connected to the fixing plate by adjusting bolts, which can precisely adjust the position of the positioning plate, thereby achieving rapid positioning of the circuit board and improving the preparation efficiency before welding. The fixed pressure block, through the design of the return spring and the fixed shaft, realizes rapid clamping and release of the circuit board, which is simple to operate and improves work efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the bidirectional lead screw of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixing block of this utility model;

[0020] Figure 4 This is a schematic diagram of the positioning cylinder of this utility model;

[0021] Figure 5 This is a schematic diagram of the adjusting bolt of this utility model.

[0022] In the diagram: 1. Support plate; 2. Sliding plate; 3. Mounting hole; 4. Positioning cylinder; 5. Limiting protrusion; 6. Two-way lead screw; 7. Drive disc; 9. Limiting groove; 10. Fixing plate; 11. Positioning plate; 12. Adjusting bolt; 13. Fixing block; 14. Fixing shaft; 15. Return spring. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 , 2 As shown in Figures 3, 4, and 5, this utility model provides a technical solution: a welding fixture for welding touch springs, comprising: a support plate 1, a positioning plate 11 adjustablely mounted on the top of the support plate 1 for positioning the circuit board; two sliding plates 2 symmetrically slidably disposed inside the support plate 1, an adjustment part disposed between the two sliding plates 2 for adjusting the distance between the two sliding plates 2; a positioning cylinder 4 detachably mounted in the middle of the sliding plate 2 for positioning the spring; and a fixing block 13 rotatably disposed on the top of the sliding plate 2, the top of the fixing block 13 having an elastic part for pressing the circuit board by the fixing block 13.

[0025] It should be noted that, according to the length of the circuit board to be assembled, the distance between the two sliding plates 2 is adjusted by the adjustment part, the spring is placed on the circuit board, and one end is inserted into the corresponding hole. The circuit board is then attached to the outside of the sliding plate 2. At this time, the spring on the circuit board is inserted into the positioning cylinder 4. The two ends of the circuit board are placed at the bottom of the two fixing blocks 13. The circuit board is pressed and fixed by the fixing blocks 13 and the elastic part. Then, the spring can be soldered and fixed to the PCBA with a soldering iron.

[0026] Please see Figure 1 , 2 As shown, the support plate 1 has a U-shaped structure. Limiting grooves 9 are provided on both sides of the inner wall of the support plate 1. Limiting protrusions 5 that cooperate with the limiting grooves 9 are fixed on both sides of the sliding plate 2. The adjustment part includes a bidirectional lead screw 6 and a drive disk 7 fixed in the middle of the bidirectional lead screw 6. The two ends of the bidirectional lead screw 6 are respectively threaded to the corresponding sliding plate 2.

[0027] It should be noted that the limiting protrusion and the limiting groove 9 of this utility model cooperate to enable the sliding plate 2 to slide orderly within the support plate 1 without deviating from the trajectory of the groove. The drive disk is set in the middle of the bidirectional lead screw 6 and is fixedly connected to the bidirectional lead screw to play the role of rotation transmission. The two ends of the bidirectional lead screw 6 have threads in opposite directions. When the lead screw rotates, the sliding plates 2 connected by the threads at both ends will move in opposite directions. Under the action of the drive disk, the two sliding plates move towards or away from the center at the same time, thereby realizing the adjustment of the distance between the two positioning cylinders 4.

[0028] Please see Figure 1 ,2 As shown in Figure 5, a fixing plate 10 is fixedly connected to the middle of the support plate 1, and an adjusting bolt 12 is threadedly connected to the middle of the fixing plate 10. One end of the adjusting bolt 12 is rotatably connected to the positioning plate 11, and the positioning plate 11 is slidably connected to the sliding plate 2.

[0029] It should be noted that when installing the circuit board, according to the width of the circuit board, the adjusting bolt 12 is rotated to drive the positioning plate 11 to move towards the center of the sliding plate 2, thereby achieving rapid positioning by fitting one side of the circuit board with the positioning plate 11.

[0030] Please see Figure 1 , 4 As shown in Figure 5, a mounting hole 3 is provided in the middle of the sliding plate 2, and a positioning cylinder 4 is threaded into the mounting hole 3 for replacing the positioning cylinder 4 according to the size of the spring.

[0031] It should be noted that the size of the circuit board of this utility model varies, and the size of the spring it is adapted to varies. The distance between the two sliding plates 2 is adjusted according to the length of the circuit board, and a suitable positioning cylinder 4 is selected according to the size of the spring. The spring is positioned and fixed by the positioning cylinder 4 of the appropriate size.

[0032] Please see Figure 3 , 5 As shown, a fixed shaft 14 is fixedly connected to the outer side of the sliding plate 2, and a fixed pressure block 13 is movably installed on the outer side of the fixed shaft 14. The elastic part is a return spring 15, which is sleeved on the outer side of the fixed shaft 14.

[0033] It should be noted that when the circuit board is attached to the sliding plate 2, the fixing block 13 is lifted upward along the fixing shaft 14 so that the bottom of the fixing block 13 is higher than the circuit board. Then the fixing block 13 is rotated so that the fixing block 13 is above the circuit board. Then the restraint on the fixing block 13 is released. Under the elastic force of the return spring 15, the fixing block 13 presses the circuit board tightly on the outside of the sliding plate 2 to facilitate subsequent soldering.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] 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. A welding fixture for welding touch springs, characterized in that: include: Support plate (1), the top of support plate (1) is adjustablely mounted with positioning plate (11) for positioning circuit board; Sliding plate (2), two sliding plates (2) are provided and symmetrically slidably placed inside the support plate (1), and an adjustment part is provided between the two sliding plates (2) for adjusting the distance between the two sliding plates (2); Positioning cylinder (4) is detachably installed in the middle of sliding plate (2) and is used to position the spring; A fixing block (13) is rotatably placed on top of the sliding plate (2). The top of the fixing block (13) is provided with an elastic part for pressing the circuit board by the fixing block (13).

2. The welding fixture for welding touch springs according to claim 1, characterized in that: The support plate (1) has a U-shaped structure. Limiting grooves (9) are provided on both sides of the inner wall of the support plate (1). Limiting protrusions (5) that cooperate with the limiting grooves (9) are fixed on both sides of the sliding plate (2).

3. A welding fixture for welding touch springs according to claim 1, characterized in that: A fixing plate (10) is fixedly connected to the middle of the support plate (1), and an adjusting bolt (12) is threadedly connected to the middle of the fixing plate (10). One end of the adjusting bolt (12) is rotatably connected to the positioning plate (11), and the positioning plate (11) is slidably connected to the sliding plate (2).

4. A welding fixture for welding touch springs according to claim 1, characterized in that: The adjustment part includes a bidirectional lead screw (6) and a drive disk (7) fixed in the middle of the bidirectional lead screw (6). The two ends of the bidirectional lead screw (6) are respectively threaded to the corresponding sliding plate (2).

5. A welding fixture for welding touch springs according to claim 1, characterized in that: The sliding plate (2) is provided with a mounting hole (3) in the middle, and the positioning cylinder (4) is threaded into the mounting hole (3) for replacing the positioning cylinder (4) according to the size of the spring.

6. A welding fixture for welding touch springs according to claim 1, characterized in that: A fixed shaft (14) is fixedly connected to the outside of the sliding plate (2), and the fixed pressure block (13) is movably installed on the outside of the fixed shaft (14).

7. A welding fixture for welding touch springs according to claim 6, characterized in that: The elastic part is a return spring (15), which is sleeved on the outside of the fixed shaft (14).

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