A pin cutting device for testing integrated circuit boards

Abstract

This invention provides a pin cutting device for testing integrated circuit boards, relating to the field of integrated circuit boards. The device includes a contact sleeve, an extension tube threaded onto the surface of the contact sleeve, a guide ring fixedly connected to the upper end of the extension tube, a broken track ring fixedly connected to the upper end of the guide ring, a rotating ring rotatably connected to the outer side of the broken track ring, a force plate slidably connected to the inner groove of the broken track ring, a limit block fixedly connected to the end of the force plate furthest from each other, the limit block slidably connected to the broken track ring, and a compression spring fixedly connected to the side of the limit block furthest from each other. This pin cutting device for testing integrated circuit boards prevents electrostatic discharge (ESD) from damaging the circuit board by directly contacting the circuit board with the contact sleeve, and controls the pin length through the extension tube, ensuring uniform pin lengths on the circuit board, thus preventing ESD from the contact and solving the problems of inconsistent pin lengths and ESD damage to the integrated circuit board during cutting.

Description

Technical Field

[0001] This invention relates to the field of integrated circuit boards, specifically to a pin cutting device for testing integrated circuit boards. Background Technology

[0002] An integrated circuit is a miniature electronic device or component. Using specific processes, transistors, resistors, capacitors, inductors, and other components required for a circuit, along with interconnecting wiring, are fabricated on one or several small pieces of semiconductor wafers or dielectric substrates, and then packaged in a casing to form a miniature structure circuit with the required circuit function.

[0003] Currently, integrated circuit board pins are divided into surface mount type and leaded type. Leaded type pins are often used because of their reliable connection and low price. However, when the pins are uniformly cut during the assembly and testing of integrated circuit boards, it is easy to cause inconsistent cutting and loose solder joints. Therefore, a device for uniformly cutting pins to prevent loose solder joints was designed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a pin cutting device for testing integrated circuit boards, which solves the problems of inconsistent pin lengths causing electrostatic discharge and damage to the integrated circuit board during cutting, damage to solder joints due to pressure and shaking during pin cutting, and the inability to cut densely packed pins individually.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pin shearing device for testing integrated circuit boards, comprising a contact sleeve, an extension tube threadedly connected to the surface of the contact sleeve, a guide ring fixedly connected to the upper end of the extension tube, a broken track ring fixedly connected to the upper end of the guide ring, a rotating ring rotatably connected to the outer side of the broken track ring, a force plate slidably connected to the inner groove of the broken track ring, a limit block fixedly connected to one end of the force plate away from each other, the limit block slidably connected to the broken track ring, a contraction spring fixedly connected to one side of the limit block away from each other, the contraction spring being located in the inner groove of the force plate, the end of the contraction spring away from the limit block being fixedly connected to the rotating ring, a press button fixedly connected to one end of the force plate away from each other, a descending chamber fixedly connected to the upper end of the broken track ring, a guide rail fixedly connected to the outer surface of the descending chamber, the rotating ring rotatably connected to the guide rail, and a housing fixedly connected to the upper end of the descending chamber. A power motor is fixedly connected to the inside of the housing. A toothed bar is fixedly connected to the output end of the power motor. A power bar meshes with the surface of the toothed bar. A cutting body is fixedly connected to the lower end of the power bar. The cutting body is slidably connected to the lowering chamber. The surface of the cutting body is slidably connected to the guide ring. The surface of the cutting body is in contact with the force plate. A positioning clamp is fixedly connected to the inner groove of the housing. A positioning wheel is rotatably connected to the lower end of the positioning clamp. A bevel gear is fixedly connected to the upper end of the positioning wheel. The bevel gear meshes with the toothed bar. A rotating plate is fixedly connected to the lower end of the positioning wheel. The surface of the rotating plate is rotatably connected to the housing. Push frames are fixedly connected to both ends of the rotating plate. The lower end of the push frame is engaged with the force plate. The push frame is slidably connected to the guide rail. A toothed column is fixedly connected to the lower end of the positioning wheel. A toothed plate meshes with the outer surface of the toothed column. A stabilizing clamp is fixedly connected to the end of the toothed plate that is far apart from each other. A guide rod is slidably connected to the upper end of the stabilizing clamp. The guide rod is fixedly connected to the housing.

[0006] Preferably, the broken track ring is circular in shape, with two grooves on the circumference of the ring, and a square hole on the circumference of the ring, through which the grooves and the square hole pass.

[0007] Preferably, the center of the gear bar is a cylindrical central shaft, with teeth at both ends of the central shaft, and a bevel gear is fixedly connected in the middle of the central shaft.

[0008] Preferably, the power bar consists of two "U"-shaped grooves, with teeth on one side of the inner side of the "U"-shaped groove that mesh with the toothed bar, and the other side of the inner side of the "U"-shaped groove being a flat surface.

[0009] Preferably, the upper end of the cutting body is a limiting block, which slides inside the lower chamber. The lower end of the limiting block is fixedly connected to a cutting claw. There are three cutting claws in each group. The inner side of the lower end of the cutting claw is fixedly connected to a cutting tooth. The outer side of the cutting claw is arc-shaped and the cutting claw is in contact with the guide ring.

[0010] Preferably, there are two sets of stabilizing clamps. The stabilizing clamps are L-shaped with a round hole at the top. The stabilizing clamps and the cutting body are at a 90-degree angle.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This integrated circuit board testing pin cutting device directly contacts the circuit board through a contact sleeve to prevent electrostatic discharge (ESD) from damaging the circuit board caused by external metal. By controlling the pin length through an extension tube, the pins on the circuit board can be of uniform length, thus preventing ESD from being generated during contact. This solves the problem of inconsistent pin lengths and ESD damage to the integrated circuit board during cutting.

[0013] 2. The integrated circuit board test pin cutting device uses a stabilizing clamp to fix the protruding pin, preventing the pin from repeatedly bending and folding during cutting. The cutting body clamps the pin, and the pin is controlled by a pressing key during cutting, achieving the effect of fixing the pin before cutting. This solves the problem of damage to the solder joints due to pressure shaking during pin cutting.

[0014] 3. The integrated circuit board test pin cutting device is directly fitted onto the outside of the pins through a cylindrical shape, allowing the device to be used in confined spaces. By squeezing the cutting body with a force plate, the pin cutting time can be controlled, avoiding the situation where cutting is performed directly without adjusting the height. This achieves the effect of still being applicable even when the pin gap is too small, and solves the problem of pins being too dense to be cut individually. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the half-section structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 4 This is a schematic diagram of the broken rail ring structure of the present invention;

[0019] Figure 5 This is a schematic diagram of the guide ring structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the cutting body structure of the present invention;

[0021] Figure 7 This is a schematic diagram of the power structure of the present invention.

[0022] Among them, the components are: contact sleeve-1, extension tube-2, guide ring-3, rail break ring-4, rotating ring-5, force plate-6, limit block-7, retraction spring-8, pressing key-9, lowering chamber-10, guide rail-11, housing-12, power motor-13, gear bar-14, power bar-15, cutting body-16, positioning clamp-17, positioning wheel-18, bevel gear-19, push frame-20, gear column-21, gear plate-22, stabilizing clamp-23, guide rod-24, and rotating plate-25. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figure 1-7 As shown, a pin cutting device for testing integrated circuit boards includes a contact sleeve 1, an extension tube 2 threadedly connected to the surface of the contact sleeve 1, the contact sleeve 1 being made of insulating material, and a guide ring 3 fixedly connected to the upper end of the extension tube 2. The guide ring 3 is circular in shape, and the inner wall of the circular ring is composed of two inclined arc surfaces. The cross-section of the circular ring is a triangle with two arc sides. The inclination of the lower inclined arc surface is less than that of the upper inclined arc surface. The guide ring 3 can cause the pins entering the device to converge towards the center for easy cutting.

[0025] The guide ring 3 is fixedly connected to the upper end of the broken rail ring 4. The broken rail ring 4 is circular in shape, and there are two grooves on the circumference of the ring. There is a square hole on the circumference of the ring, and the groove and the square hole pass through each other. The broken rail ring 4 can control the position of the device pressing inward.

[0026] A rotating ring 5 is rotatably connected to the outer side of the broken rail ring 4. A force plate 6 is slidably connected to the inner groove of the broken rail ring 4. A limit block 7 is fixedly connected to the opposite end of the force plate 6. The limit block 7 is slidably connected to the broken rail ring 4. A contraction spring 8 is fixedly connected to the opposite side of the limit block 7. The contraction spring 8 is located in the inner groove of the force plate 6. The end of the contraction spring 8 away from the limit block 7 is fixedly connected to the rotating ring 5. A press button 9 is fixedly connected to the opposite end of the force plate 6. A descending chamber 10 is fixedly connected to the upper end of the broken rail ring 4. A guide rail 11 is fixedly connected to the outer surface of the descending chamber 10. The rotating ring 5 is rotatably connected to the guide rail 11. A housing 12 is fixedly connected to the upper end of the descending chamber 10. A power motor 13 is fixedly connected to the inner side of the housing 12. A gear 14 is fixedly connected to the output end of the power motor 13. The center of the gear 14 is a cylindrical central shaft. Teeth are opened at both ends of the central shaft. A bevel gear is fixedly connected in the middle of the central shaft. The gear 14 is only for transmitting power.

[0027] The surface of the toothed bar 14 is engaged with a power bar 15, which consists of two "U"-shaped grooves. One side of the inner side of the "U"-shaped groove is provided with teeth that mesh with the toothed bar 14. The other side of the inner side of the "U"-shaped groove is a flat surface. The power bar 15 can ensure that it is always engaged with the toothed bar 14 and is pushed down.

[0028] A cutting body 16 is fixedly connected to the lower end of the power bar 15. The cutting body 16 is slidably connected to the descending chamber 10. The upper end of the cutting body 16 is a limiting block, which slides inside the descending chamber 10. A cutting claw is fixedly connected to the lower end of the limiting block. There are three cutting claws in each group. A cutting tooth is fixedly connected to the inner side of the lower end of the cutting claw. The outer side of the cutting claw is arc-shaped. The cutting claw is in contact with the guide ring 3. The cutting body 16 can cut the pin flat and prevent the cutting surface from having sharp corners.

[0029] The surface of the cutting body 16 is slidably connected to the guide ring 3, and the surface of the cutting body 16 is in contact with the force plate 6. A positioning clamp 17 is fixedly connected to the inner groove of the housing 12. A positioning wheel 18 is rotatably connected to the lower end of the positioning clamp 17. A bevel gear 19 is fixedly connected to the upper end of the positioning wheel 18. The bevel gear 19 meshes with the gear bar 14. A rotating plate 25 is fixedly connected to the lower end of the positioning wheel 18. The surface of the rotating plate 25 is rotatably connected to the housing 12. Push frames 20 are fixedly connected to both ends of the rotating plate 25. The end is snapped into the force plate 6, the push frame 20 is slidably connected to the guide rail 11, the lower end of the positioning wheel 18 is fixedly connected to the toothed column 21, the outer surface of the toothed column 21 is meshed with the toothed plate 22, and the ends of the toothed plates 22 that are far apart from each other are fixedly connected to the stabilizing clamp 23. There are two sets of stabilizing clamps 23. The stabilizing clamp 23 is L-shaped and has a round hole at the upper end. The stabilizing clamp 23 and the cutting body 16 form a 90-degree angle. The stabilizing clamp 23 has the effect of clamping the pin and preventing the pin from repeatedly swinging and damaging the solder joint during cutting.

[0030] A guide rod 24 is slidably connected to the upper end of the stabilizing clamp 23, and the guide rod 24 is fixedly connected to the housing 12.

[0031] In use, first, attach the device to the outside of the pin. The pin enters the device along the inner wall of the guide ring 3. Rotate the contact sleeve 1 to adjust the height of the extension tube 2. Start the power motor 13 to drive the toothed bar 14 to rotate. The toothed bar 14 pushes the power bar 15 down, and the power bar 15 pushes the cutting body 16 down. As the cutting body 16 descends, it retracts inward along the guide ring 3. The rotation of the toothed bar 14 drives the bevel gear 19 to rotate. The positioning wheel 18 rotates along the positioning clamp 17. The rotating plate 25 drives the push frame 20 to rotate. The force plate 6 and the rotating ring 5 rotate under the rotational thrust. The toothed plate 22 moves closer to each other under the drive of the toothed column 21. The stabilizing clamp 23 clamps the pin along the guide bar 24. Press the pressing key 9. The force plate 6 clamps the cutting body 16 to cut the pin. After completion, the retracting spring 8 resets the pressing key 9, and the reverse power motor 13 is reset.

[0032] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pin cutting device for testing integrated circuit boards, comprising a contact sleeve (1), characterized in that: The contact sleeve (1) is threaded with an extension tube (2). A guide ring (3) is fixedly connected to the upper end of the extension tube (2). A broken rail ring (4) is fixedly connected to the upper end of the guide ring (3). A rotating ring (5) is rotatably connected to the outer side of the broken rail ring (4). A force plate (6) is slidably connected to the inner groove of the broken rail ring (4). A limit block (7) is fixedly connected to one end of the force plate (6) that is far apart from each other. The limit block (7) is slidably connected to the broken rail ring (4). A contraction spring (8) is fixedly connected to one side of the limit block (7) that is far apart from each other. The contraction spring (8) is located in the inner groove of the force plate (6). One end of the spring (8) away from the limit block (7) is fixedly connected to the rotating ring (5). The other end of the force plate (6) away from each other is fixedly connected to the pressing key (9). The upper end of the broken rail ring (4) is fixedly connected to the descending chamber (10). The outer surface of the descending chamber (10) is fixedly connected to the guide rail (11). The rotating ring (5) is rotatably connected to the guide rail (11). The upper end of the descending chamber (10) is fixedly connected to the housing (12). The inner side of the housing (12) is fixedly connected to the power motor (13). The output end of the power motor (13) is fixedly connected to the gear bar (14). The surface of the gear bar (14) is engaged with the power... The lower end of the power bar (15) is fixedly connected to a cutting body (16), which is slidably connected to the lowering chamber (10). The surface of the cutting body (16) is slidably connected to the guide ring (3), and the surface of the cutting body (16) is in contact with the force plate (6). The inner groove of the housing (12) is fixedly connected to a positioning clamp (17), and the lower end of the positioning clamp (17) is rotatably connected to a positioning wheel (18). The upper end of the positioning wheel (18) is fixedly connected to a bevel gear (19), which meshes with a toothed rod (14). The lower end of the positioning wheel (18) is fixedly connected to a rotating plate ( ). 25), the surface of the rotating plate (25) is rotatably connected to the housing (12), the two ends of the rotating plate (25) are fixedly connected to the push frame (20), the lower end of the push frame (20) is engaged with the force plate (6), the push frame (20) is slidably connected to the guide rail (11), the lower end of the positioning wheel (18) is fixedly connected to the tooth column (21), the outer surface of the tooth column (21) is meshed with the tooth plate (22), the end of the tooth plate (22) that is far apart from each other is fixedly connected to the stabilizing clamp (23), the upper end of the stabilizing clamp (23) is slidably connected to the guide rod (24), and the guide rod (24) is fixedly connected to the housing (12).

2. The pin cutting device for testing integrated circuit boards according to claim 1, characterized in that: The broken track ring (4) is circular in shape, with two grooves on the circumference of the ring and a square hole on the circumference of the ring, through which the grooves and the square hole pass.

3. The pin cutting device for testing integrated circuit boards according to claim 1, characterized in that: The center of the toothed bar (14) is a cylindrical central shaft with teeth at both ends and a bevel gear fixedly connected in the middle of the central shaft.

4. The pin cutting device for testing integrated circuit boards according to claim 1, characterized in that: The power bar (15) consists of two "U"-shaped grooves. One side of the inner side of the "U"-shaped groove is provided with teeth that mesh with the toothed bar (14). The other side of the inner side of the "U"-shaped groove is a plane.

5. The pin cutting device for testing integrated circuit boards according to claim 1, characterized in that: The upper end of the cutting body (16) is a limiting block, which slides inside the descending chamber (10). The lower end of the limiting block is fixedly connected to a cutting claw. There are three cutting claws in each group. The inner side of the lower end of the cutting claw is fixedly connected to a cutting tooth. The outer side of the cutting claw is arc-shaped. The cutting claw is in contact with the guide ring (3).

6. The pin cutting device for testing integrated circuit boards according to claim 1, characterized in that: There are two sets of stabilizing clips (23). The stabilizing clips (23) are L-shaped and have a round hole at the top. The stabilizing clips (23) and the cutting body (16) are at a 90-degree angle.

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