A jig for capacitor formation

Abstract

The application discloses a clamp for capacitor formation, relates to the technical field of capacitors, and comprises a circuit substrate, a clamping block arranged in the length direction of the circuit substrate to clamp the circuit substrate, a driving shaft parallel to the length of the circuit substrate and rotationally connected with the clamping block, and a pair of swing arms arranged on the two sides of the circuit substrate and rotationally connected with the clamping block, wherein one end of the swing arms close to the circuit substrate is respectively provided with an insulating seat, and the other end of the swing arms is connected through an elastic element; the driving shaft forms a shaft flat position at the position of the swing arms, and the rotation of the driving shaft makes the shaft flat position and the surface of the driving shaft alternately contact the swing arms to realize the opening and closing of the insulating seat; the application realizes the opening and closing of the swing arms through the rotation instead of the translation of the driving shaft, so that the space occupied by the clamp in the horizontal direction is reduced; meanwhile, the shaft flat position is arranged on the driving shaft, the shaft flat position alternately contacts the swing arms with the surface of the driving shaft when the driving shaft rotates, and the swing arms are switched between the opening and closing states.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, and in particular to a clamp for capacitor formation. Background Technology

[0002] In the manufacturing process of capacitors, formation is a critical step. During the aging stage, the capacitor leads are typically clamped to the positive and negative terminals of the circuit board using fixtures to establish an electrical connection between the capacitor and the circuit board. Subsequently, a series of currents or voltages are applied to subject the capacitor to aging performance within a short period of time, thereby improving its reliability and performance stability.

[0003] CN201877298U discloses a clamp opening and closing device for an aluminum electrolytic capacitor aging machine. This device uses the translational movement of a square opening and closing rod to drive a guide plate fixedly connected to it to move along with it. The guide plate has two V-shaped guide grooves, and rollers connected to a swing frame can slide within these guide grooves, thereby controlling the opening and closing of the swing frame.

[0004] This patented design uses a guide plate and rollers to convert the horizontal movement of the opening / closing rod into the vertical opening and closing action of the swing frame. However, this structure requires a certain amount of travel space to be reserved for the opening / closing rod in the horizontal direction, resulting in a large overall horizontal space occupied by the equipment when multiple clamps are arranged in a row. In addition, this structure has high requirements for the shape of the guide groove to ensure that the rollers move smoothly within the groove and to avoid the problem of the swing frame not being able to fully open due to jamming. Utility Model Content

[0005] This invention provides a fixture for capacitor formation, which aims to solve the problems of existing fixtures having complex structures and occupying a large space.

[0006] To achieve the above objectives, embodiments of the present invention provide a clamp for capacitor formation, comprising:

[0007] Circuit board;

[0008] Clamping blocks are positioned along the length of the circuit board to hold the circuit board.

[0009] A drive shaft is parallel to the length of the circuit board and rotatably connected to the clamping block;

[0010] A pair of swing arms are respectively disposed on both sides of the circuit board and rotatably connected to the clamping block. An insulating seat is provided at one end of each pair of swing arms near the circuit board, and the other end of each pair of swing arms is connected by an elastic element.

[0011] The drive shaft forms a flat section at the position of the swing arm. The rotation of the drive shaft causes the flat section and the surface of the drive shaft to alternately contact the swing arm to realize the opening and closing of the insulating seat.

[0012] Preferably, at least two clamping blocks are provided, and a plurality of clamping blocks are spaced apart along the length direction of the circuit board. A clamping groove for clamping the circuit board is provided on the same side of the clamping blocks. A clamping bolt is also provided on the clamping blocks, and the clamping bolt abuts the circuit board in the clamping groove.

[0013] Preferably, the clamping block has a pair of swing arms on at least one side.

[0014] Preferably, the swing arm includes a first segment and a second segment, the first segment is perpendicular to the second segment and connected to the second segment, the middle part of the second segment is rotatably connected to the clamping block through a rotating shaft, the end of the second segment away from the first segment in each pair of swing arms is connected through the elastic element, and the first segment is used to connect to the insulating seat.

[0015] Preferably, the second segment is further provided with rollers, and the rotation of the drive shaft causes the shaft flat section and the drive shaft surface to alternately contact the rollers.

[0016] Preferably, each of the shaft flats includes two parallel planes, the two planes being parallel to the axial direction of the drive shaft, and the distance from the plane to the center of the drive shaft being less than the radius of the drive shaft;

[0017] The number of the shaft flats is equal to the logarithm of the swing arms.

[0018] Preferably, a spring sheet is provided on the upper part for pressing the capacitor leads against the circuit board, and the spring sheet is arranged along the length direction of the insulating base.

[0019] Preferably, the insulating base has two rows of spring sheets in the width direction.

[0020] The above-described solution of this utility model has the following beneficial effects:

[0021] In this application, the opening and closing of the swing arm is achieved by the rotation of the drive shaft. Compared with existing fixtures, the rotation of the drive shaft does not change the position of the drive shaft, reducing the space occupied by the fixture in the horizontal direction. Simultaneously, a shaft flat portion is provided on the drive shaft. When the drive shaft rotates, the shaft flat portion and the surface of the drive shaft alternately contact the swing arm, allowing the swing arm to switch between open and closed states. This application omits the guide plate while achieving the same function, thus simplifying the fixture structure.

[0022] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the present invention;

[0024] Figure 2 yes Figure 1 Enlarged view of section A;

[0025] Figure 3 This is a schematic diagram of the clamping block;

[0026] Figure 4 This is a schematic diagram of the drive shaft;

[0027] Figure 5 This is a schematic diagram of a swing arm;

[0028] Figure 6 This is a schematic diagram showing the positions of the insulating base and the spring plate.

[0029] [Explanation of Labels in the Attached Image]

[0030] 10-Circuit board,

[0031] 20-Clamping block, 21-Clamping groove,

[0032] 30 - Drive shaft, 31 - Shaft flat position

[0033] 40-Swing arm, 41-Insulating base, 42-First section, 43-Second section, 44-Rotating shaft, 45-Roller, 46-Spring plate. Detailed Implementation

[0034] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0035] like Figure 1-6 As shown, an embodiment of this utility model provides a fixture for capacitor formation, including a circuit board 10. The circuit board 10 is a conventional product. Both sides of the circuit board 10 have positive and negative connection points, which are used to connect to the leads of a capacitor for aging. A clamping block 20 is also provided along the length of the circuit board 10 to hold it. A drive shaft 30 is also provided along the width of the circuit board 10. The drive shaft 30 is cylindrical and its axis is parallel to the length of the circuit board 10. The drive shaft 30 is rotatably connected to the clamping block 20.

[0036] The fixture also includes a pair of swing arms 40, which are located on both sides of the circuit board 10, i.e., the swing arms 40 are located on both sides of the board having a positive connection point and a negative connection point. The swing arms 40 are rotatably connected to the clamping block 20. An insulating seat 41 is provided on one end of the two swing arms 40 near the circuit board 10, and the other end of the two swing arms 40 is connected by an elastic element (not shown in the figure).

[0037] The aforementioned drive shaft 30 also has a shaft flat position 31, which is located at the position where the swing arm 40 contacts the drive shaft 30. The drive shaft 30 can rotate so that the surface of the shaft flat position 31 and the drive shaft 30 alternately contacts the swing arm 40 to realize the opening and closing of the insulating seat 41.

[0038] In this application, the drive shaft 30 can be driven by a rotary device.

[0039] In this application, since the swing arm 40 is rotatably connected to the clamping block 20, the connection point between the swing arm 40 and the clamping block 20 rotates around an axis. One end of the swing arm 40 is provided with an insulating seat 41, and the other end is provided with an elastic element. When the drive shaft 30 rotates, the outer surface of the drive shaft 30 causes the ends of the swing arms 40 with the elastic elements to move away from each other, while the other ends of the swing arms 40 move closer together, thereby closing the insulating seat 41. When the drive shaft 30 continues to rotate, the shaft flat part 31 contacts the swing arm 40. At this time, the ends of the swing arms 40 with the elastic elements move closer together under the action of the elastic elements, while the other ends of the swing arms 40 move away from each other, thereby opening the insulating seat 41.

[0040] Since the rotation of the drive shaft 30 does not change its horizontal position, the fixture of this application can reduce the space occupied in the horizontal direction, which helps to miniaturize the forming equipment. At the same time, the machining requirements of the shaft flat part 31 are low and it is easy to manufacture. Finally, the fixture as a whole requires fewer parts, simplifying the fixture structure.

[0041] Furthermore, at least two clamping blocks 20 are provided, and a number of clamping blocks 20 are spaced apart along the length direction of the circuit board 10. A clamping groove 21 is provided on the same side of the clamping blocks 20, and the circuit board 10 is inserted into the clamping groove 21. A clamping bolt is provided on the clamping block 20. By tightening the clamping bolt, the circuit board 10 can be pressed against the clamping groove 21, thereby preventing the circuit board 10 from shaking.

[0042] Preferably, in this embodiment, four clamping blocks 20 are provided, and the four clamping blocks 20 are respectively arranged at intervals along the length direction of the circuit board 10. The number of clamping blocks 20 can be set according to the length of the circuit board 10.

[0043] The clamp 20 has a pair of swing arms 40 on at least one side.

[0044] Reference Figure 1-2As shown, in this embodiment, four clamping blocks 20 are provided, two of which are located at both ends of the circuit board 10 respectively, and each of the two clamping blocks 20 has a pair of swing arms 40 on its opposite side; the other two clamping blocks 20 have a pair of swing arms 40 on one side respectively, or a pair of swing arms 40 can be provided on both sides of each clamping block 20.

[0045] like Figure 5 As shown, in this embodiment, the swing arm 40 includes a first segment 42 and a second segment 43, wherein the first segment 42 is perpendicular to the second segment 43 and is fixedly connected to the second segment 43, so that the swing arm 40 is L-shaped as a whole. The middle part of the second segment 43 is connected to the clamping block 20 through a rotating shaft 44. The end of the second segment 43 in each pair of swing arms 40 away from the first segment 42 is connected by an elastic element. The first segment 42 is used to connect to the insulating seat 41.

[0046] Preferably, the width of the end of the second segment 43 where the elastic element is mounted is smaller than the width of the other end of the first segment 42, thereby ensuring that a larger elastic element is mounted to provide greater elastic force to ensure the complete opening of the insulating seat 41 when it is opened. Preferably, the elastic element is a spring.

[0047] Preferably, a roller 45 is also provided on the second section 43, and the roller 45 is located at the shaft flatness 31. When the drive shaft 30 rotates, the roller 45 alternately contacts the shaft flatness 31 or the side surface of the drive shaft 30. By providing the roller 45, the opening and closing states of the clamp can be switched more smoothly.

[0048] In this embodiment, each shaft flat portion 31 includes two parallel planes formed on the side of the drive shaft 30. The distance from each plane to the center of the drive shaft 30 is less than the radius of the drive shaft 30. The planes can be manufactured by machining. The number of shaft flat portions 31 is the same as the number of pairs of swing arms 40. In this embodiment, there are four pairs of swing arms 40, and four corresponding shaft flat portions 31.

[0049] Furthermore, in order to further press the capacitor pins against the positive or negative connection point and maintain the electrical path, a spring plate 46 is also provided on the insulating base 41. The spring plate 46 is arranged along the length of the insulating base 41 on the opposite side of the two insulating bases 41.

[0050] Preferably, the insulating base 41 is provided with two rows of spring plates 46 in the width direction.

[0051] When using the fixture of this application, it is used in conjunction with an automatic feeding structure. Since the automatic feeding structure is existing technology (such as the solution disclosed in patent CN102522203B), it will only be briefly described here. The automatic feeding structure is sufficient to arrange several capacitors in a straight line, keeping the capacitor leads facing outwards. After the automatic feeding structure approaches the fixture, it inserts the capacitor leads between the circuit board 10 and the insulating base 41, respectively. Then, the fixture closes to clamp the capacitors onto the fixture, and the automatic feeding structure retracts to age the capacitors.

[0052] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A clamp for capacitor formation, characterized in that, include: Circuit board (10); Clamping block (20) is provided in the length direction of circuit board (10) to clamp circuit board (10); A drive shaft (30) is parallel to the length of the circuit board (10) and rotatably connected to the clamp (20); A pair of swing arms (40) are respectively disposed on both sides of the circuit board (10) and rotatably connected to the clamp (20). An insulating seat (41) is provided at one end of the pair of swing arms (40) near the circuit board (10), and the other end of the pair of swing arms (40) is connected by an elastic element. The drive shaft (30) forms a flat section (31) at the position of the swing arm (40). The drive shaft (30) rotates so that the flat section (31) and the surface of the drive shaft (30) alternately contact the swing arm (40) to realize the opening and closing of the insulating seat (41).

2. The fixture for capacitor formation according to claim 1, characterized in that: At least two clamping blocks (20) are provided, and a plurality of clamping blocks (20) are spaced apart along the length direction of the circuit board (10). A clamping groove (21) for clamping the circuit board (10) is provided on the same side of the clamping blocks (20). A clamping bolt is also provided on the clamping block (20), and the clamping bolt abuts the circuit board (10) against the clamping groove (21).

3. The fixture for capacitor formation according to claim 2, characterized in that: The clamp (20) has a pair of swing arms (40) on at least one side.

4. The fixture for capacitor formation according to claim 1, characterized in that: The swing arm (40) includes a first segment (42) and a second segment (43). The first segment (42) is perpendicular to the second segment (43) and connected to the second segment (43). The middle part of the second segment (43) is rotatably connected to the clamping block (20) through a rotating shaft (44). The end of the second segment (43) in each pair of swing arms (40) away from the first segment (42) is connected through the elastic element. The first segment (42) is used to connect to the insulating seat (41).

5. The fixture for capacitor formation according to claim 4, characterized in that: The second segment (43) is also provided with a roller (45), and the rotation of the drive shaft (30) causes the shaft flat (31) and the shaft surface of the drive shaft (30) to alternately contact the roller (45).

6. The fixture for capacitor formation according to claim 3, characterized in that: Each of the said shaft flats (31) includes two parallel planes, the two planes being parallel to the axial direction of the drive shaft (30), and the distance from the planes to the center of the drive shaft (30) being less than the radius of the drive shaft (30); The number of the axial flats (31) is equal to the logarithm of the swing arms (40).

7. The fixture for capacitor formation according to claim 1, characterized in that: An insulating base (41) is provided with a spring sheet (46) for pressing the capacitor pin against the circuit board (10), the spring sheet (46) being arranged along the length direction of the insulating base (41).

8. The fixture for capacitor formation according to claim 7, characterized in that: The insulating base has two rows of spring plates in the width direction.

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