A circuit board pin corner cutting device

Abstract

This utility model discloses a circuit board pin trimming device, including a cutting blade and a working box. The bottom of the cutting blade is connected to a first motor. Inside the working box, above the cutting blade, are two guide rails with adjustable spacing and height. The circuit board is clamped between the two guide rails and can move left and right along them. Below the top plate inside the working box, there is a moving mechanism that can drive the circuit board to move left and right. Below the cutting blade inside the working box, there is a removable receiving box. The right side wall of the working box is an openable door. By including the working box, cutting blade, guide rails, and moving mechanism, the pins are cut downwards during the trimming process. After trimming, the pins fall directly into the receiving box under gravity. Protected by the side wall of the working box, this not only facilitates the collection of the trimmed pins but also greatly improves safety.

Description

Technical Field

[0001] This utility model belongs to the field of pin clipping technology, and in particular relates to a circuit board pin clipping device. Background Technology

[0002] In electronics manufacturing companies, after the PCB circuit boards are soldered, the protruding leads need to be trimmed. Trimming devices are used to trim the leads instead of manually, thus improving the efficiency of the trimming process.

[0003] Regarding the existing technology for lead trimming, a search revealed a utility model patent with Chinese patent authorization announcement number CN219402100U that discloses a novel PCB lead trimming device. It mainly includes a frame, with a support rod connected to the top of the frame via a nut block. The support rod is equipped with a clamping mechanism for the PCB board, and a shearing blade is provided on the support rod above the clamping mechanism. When trimming leads, the clamping mechanism clamps the PCB board, and then the shearing blade is activated to begin trimming the leads of the PCB board.

[0004] In practice, existing lead trimming devices with similar technical solutions have been found to have areas for improvement: when trimming leads on circuit boards, the leads are cut upwards, and there is no protective cover, which causes the cut leads to scatter in all directions, making it relatively easy to collect the cut leads and increasing the risk of safety accidents. Utility Model Content

[0005] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a circuit board pin clipping device, which solves the problems of existing circuit board pin clipping devices where the pins are cut upwards and no protective cover is provided, resulting in the cut pins scattering in all directions, making it relatively easy to collect the cut pins and easily causing safety accidents.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a circuit board pin clipping device, including a cutting blade and a rectangular work box. The cutting blade is a serrated blade. The bottom of the cutting blade is connected to a first motor that can drive it to rotate. The body of the first motor is fixed above the center of the bottom plate of the work box. Inside the work box, above the cutting blade, there are two guide rails that can be adjusted in distance and height. The circuit board is clamped in the two guide rails and can move left and right along the guide rails. Below the top plate inside the work box, there is a moving mechanism that can drive the circuit board to move left and right. Below the cutting blade inside the work box, there is a removable receiving box. The right side wall of the work box is provided with an openable door.

[0007] As a further improvement of this utility model, a protective cover is provided inside the working box on the outside of the first motor.

[0008] As a further improvement of this utility model, a first nut block is provided at both the lower left and right ends of the two guide rail plates. The two first nut blocks at the left end of the two guide rail plates and the two first nut blocks at the right end of the two guide rail plates are respectively threaded to a first screw. The threads at the front and rear ends of the first screw have opposite directions. The front and rear ends of the first screw are rotatably connected to the front and rear side walls of the work box. A second motor is connected to the front end of each first screw. A first guide rod is provided parallel to one side of each first screw. Two first nut blocks are slidably connected to each first guide rod. The front and rear ends of the first guide rod are fixedly connected to the front and rear side walls of the work box.

[0009] As a further improvement of this utility model, each of the guide rail plates is rotatably connected to an adjusting rod at the position where the first nut block is set. The lower end of the adjusting rod extends out of the guide rail plate and is provided with a threaded section. The threaded section is threadedly connected to the nut block. The upper end of the adjusting rod extends out of the guide rail plate and is fixedly connected to the screwing head.

[0010] As a further improvement of this utility model, the moving mechanism includes a bottom pressure plate, and a telescopic rod is provided above the bottom pressure plate. The telescopic rod is set above the work box and can be moved left and right by a left and right adjustment mechanism. A downward protruding plate is provided below the right side rib of the bottom plate. A pressing plate that can slide back and forth is provided on both the left and right sides of the bottom plate. Two tightening bolts that can press against the pressing plate are threaded on the pressing plate. A pressure plate that can press against the circuit board is provided below the rear side of the left pressing plate and below the front side of the right pressing plate.

[0011] As a further improvement of this utility model, the bottom of the pressure-stopping plate is provided with a rubber layer.

[0012] As a further improvement of this utility model, the left and right adjustment mechanism includes a second nut block, which is slidably connected to the top plate of the working box. The upper part of the working box is provided with a second screw and a second guide rod extending left and right. The left and right ends of the second screw are rotatably set on the left and right side walls of the working box, and one end of the second screw passes through the working box and is connected to a third motor. The left and right ends of the second guide rod are fixedly set on the left and right side walls of the working box. The second screw passes through the second nut block and is threadedly connected to the second nut block. The second guide rod passes through the second nut block and is slidably connected to the second nut block.

[0013] As a further improvement of this utility model, the four side walls of the work box are all made of transparent material.

[0014] Compared with the prior art, this utility model has the following advantages: 1. By setting up a working box and installing a rotatable shearing blade inside, with the shearing blade having a serrated blade structure, and two guide rails above the shearing blade, and a moving mechanism inside the working box that can drive the circuit board, when cutting the leads of the circuit board, the distance between the two guide rails is adjusted according to the width of the circuit board, so that the circuit board is inserted into the guide rails. The height of the two guide rails is adjusted according to the required lead height to align the upper surface of the shearing blade with the lead cutting plane of the circuit board. Then, the moving mechanism is adjusted and the first motor is turned on. The moving mechanism drives the circuit board to move from right to left, while the first motor drives the shearing blade to rotate. After the circuit board passes the shearing blade, all the leads at the bottom of the circuit board are cut off, resulting in high cutting efficiency. During the cutting process, the leads are cut downwards. After cutting, the leads fall directly into the receiving box under the action of gravity. With the protection of the side wall of the working box, it is not only convenient to collect the cut leads, but also greatly improves safety.

[0015] Furthermore, because the spacing between the two guide rails is adjustable, it can be used for circuit boards of different widths, making it widely applicable. In addition, the height of the guide rails is adjustable, so it can be used for different pin retention lengths, further expanding its applicability.

[0016] 2. By providing a protective cover on the outside of the first motor, the first motor can be protected to prevent the cut-off pins from falling onto the motor shaft and causing the motor to malfunction.

[0017] 3. By setting a first nut block below the guide rail plate, a first screw is threadedly connected to the first nut block, and a first guide rod is slidably connected. The first screw is connected to a second motor. Therefore, the second motor can drive the first screw to rotate. When the first screw rotates, the two first nut blocks move in opposite directions or towards each other under the limit of the first guide rod. Therefore, the distance between the two guide rail plates can be adjusted, and the adjustment structure is simple.

[0018] 4. By setting an adjusting rod at the position of the first nut block on each guide rail plate, the lower end of the adjusting rod extends out of the guide rail plate and has a threaded section, which is threadedly connected to the nut block. The upper end of the adjusting rod extends out of the guide rail plate and is fixedly connected to the screwing head. Therefore, by screwing the adjusting rod, the height of the guide rail plate can be adjusted, thereby allowing for fine adjustment of the circuit board height. The adjustment is simple and efficient.

[0019] 5. By setting the moving mechanism as a structure of a bottom pressure plate, a telescopic rod, and a protruding plate, the telescopic rod can drive the bottom pressure plate to adjust up and down, while the protruding plate can be locked at the edge of the circuit board to drive and push the circuit board to move. In addition, by setting two sliding pressure plates on the bottom pressure plate, and a pressure stop plate that can press on the circuit board is set on the lower rear side of the left pressure plate and the lower front side of the right pressure plate, the pressure plates can be slid according to the width of the circuit board, so that the pressure stop plates of the sliding plates can cross and press on the circuit board, reducing the deformation or warping of the circuit board during the movement of the circuit board.

[0020] 6. By adding a rubber layer to the pressure plate, the softness of the rubber layer can reduce damage to the circuit board.

[0021] 7. By making the four sides of the work box with transparent material, it is easy to observe the situation inside the work box. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 1 Enlarged view at point A; Figure 4 for Figure 1 Enlarged view at point B; Figure 5 This is a side view of the guide rail plate; In the diagram: 1. Shearing blade; 2. Working box; 3. First motor; 4. Guide rail plate; 5. Moving mechanism; 501. Bottom pressure plate; 502. Telescopic rod; 503. Protruding plate; 504. Pressing plate; 505. Tightening bolt; 506. Pressure stop plate; 507. Second nut block; 508. Second screw; 509. Second guide rod; 510. Third motor; 6. Receiving box; 7. Door; 8. Protective cover; 9. First nut block; 10. First screw; 11. Second motor; 12. First guide rod; 13. Adjusting rod; 14. Tightening head; 15. Circuit board; 16. Slotting. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0024] For ease of description, the coordinate system is defined as follows: Figure 1As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0025] This utility model discloses a circuit board pin clipping device. (Refer to...) Figure 1 and Figure 2 A circuit board pin trimming device includes a cutting blade 1 and a rectangular work box 2. The cutting blade 1 is a serrated blade, and its bottom is connected to a first motor 3 (not shown in the attached figure) that drives it to rotate. The body of the first motor 3 is fixed above the center of the bottom plate of the work box 2. A protective cover 8 is fixedly installed inside the work box 2 on the outside of the first motor 3 to protect the first motor 3 and prevent the cut pins from hitting the motor shaft and causing motor malfunction. The work box 2 also has two guide rails 4 above the cutting blade 1, which are adjustable in distance and height. Figure 5 As shown, two guide rails 4 have slots 16 on their facing sides to allow the circuit board 15 to be inserted. The circuit board 15 is clamped between the two guide rails 4 and can move left and right along the guide rails 4. A moving mechanism 5 is provided below the top plate inside the work box 2 to move the circuit board 15 left and right. A removable receiving box 6 is placed below the shearing blade 1 inside the work box 2. The right side wall of the work box 2 is provided with an openable door 7. To facilitate observation of the inside of the work box 2, all four side walls of the work box 2 are made of transparent material.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a first nut block 9 is provided at both the lower left and right ends of the two guide rail plates 4. The two first nut blocks 9 at the left end of the two guide rail plates 4 and the two first nut blocks at the right end of the two guide rail plates 4 are respectively threaded to a first screw 10. The threads at the front and rear ends of the first screw 10 are in opposite directions. The front and rear ends of the first screw 10 are rotatably connected to the front and rear side walls of the work box 2. A second motor 11 is connected to the front end of each first screw 10. A first guide rod 12 is provided parallel to one side of each first screw 10. Each first guide rod 12 is slidably connected to two first nut blocks 9. The front and rear ends of the first guide rod 12 are fixedly connected to the front and rear side walls of the work box 2. By setting a first nut block 9 below the guide rail plate 4, a first screw 10 is threadedly connected to the first nut block 9, and a first guide rod 12 is slidably connected. The first screw 10 is connected to the second motor 11. Therefore, the second motor 11 can drive the first screw 10 to rotate. When the first screw 10 rotates, the two first nut blocks 9 move in opposite directions or towards each other under the limit of the first guide rod 12. Therefore, the distance between the two guide rail plates 4 can be adjusted, and the adjustment structure is simple.

[0027] In addition, such as Figure 1 and Figure 3As shown, each guide rail plate 4 has an adjusting rod 13 rotatably connected at the position where the first nut block 9 is set. The lower end of the adjusting rod 13 extends out of the guide rail plate 4 and has a threaded section fixedly provided. The threaded section is threadedly connected to the nut block. The upper end of the adjusting rod 13 extends out of the guide rail plate 4 and is fixedly connected to the screw head 14. By setting an adjusting rod 13 at the position where the first nut block 9 is set on each guide rail plate 4, with the lower end of the adjusting rod 13 extending out of the guide rail plate 4 and having a threaded section that is threadedly connected to the nut block, and the upper end of the adjusting rod 13 extending out of the guide rail plate 4 and fixedly connected to the screw head 14, the height of the guide rail plate 4 can be adjusted by screwing the adjusting rod 13, thereby allowing for fine-tuning of the height of the circuit board 15. The adjustment is simple and efficient.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, the moving mechanism 5 includes a bottom pressure plate 501, and a telescopic rod 502 is provided above the bottom pressure plate 501. The telescopic rod 502 can be an electric push rod or a pneumatic push rod. The bottom of the telescopic rod 502 is fixedly connected to the bottom pressure plate 501. The telescopic rod 502 is set above the work box 2 and can move left and right through the left and right adjustment mechanism. A downward protruding plate 503 is fixedly provided below the right side rib of the bottom plate. A pressing plate 504 that can slide back and forth is provided on both the left and right sides of the bottom plate. Two tightening bolts 505 are threadedly connected to the pressing plate 504, which can respectively press against the pressing plate 504. A pressure plate 506 that can press against the circuit board 15 is fixedly provided below the rear side of the left pressing plate 504 and below the front side of the right pressing plate 504. By configuring the moving mechanism 5 as a base pressure plate 501, a telescopic rod 502, and a protruding plate 503, the telescopic rod 502 can drive the base pressure plate 501 to adjust up and down. The protruding plate 503 can be engaged with the edge of the circuit board 15 to move the circuit board 15. Furthermore, by providing two sliding pressure plates 504 on the base pressure plate 501, and a pressure-stopping plate 506 is provided on the lower rear side of the left pressure plate 504 and the lower front side of the right pressure plate 504 to press against the circuit board 15, the pressure plates 504 can be slid according to the width of the circuit board 15, allowing the pressure-stopping plates 506 to cross-press against the circuit board 15, reducing deformation or warping of the circuit board 15 during movement. In addition, to reduce damage to the circuit board 15, a rubber layer is bonded to the bottom of the pressure-stopping plate 506.

[0029] like Figure 2As shown, the left and right adjustment mechanism includes a second nut block 507, which is slidably connected to the top plate of the work box 2. For example, a groove for the second nut block 507 is provided on the top of the work box 2. A second screw 508 and a second guide rod 509 extending left and right are provided on the upper part of the work box 2. The left and right ends of the second screw 508 are rotatably mounted on the left and right side walls of the work box 2, and one end of the second screw 508 passes through the work box 2 and is connected to the third motor 510. The left and right ends of the second guide rod 509 are fixedly mounted on the left and right side walls of the work box 2. The second screw 508 passes through the second nut block 507 and is threadedly connected to the second nut block 507. The second guide rod 509 passes through the second nut block 507 and is slidably connected to the second nut block 507.

[0030] This invention features a working box 2 containing a rotatable shearing blade with a serrated blade structure. Two guide rails 4 are positioned above the shearing blade. The working box 2 also includes a moving mechanism 5 that drives the circuit board 15. Therefore, when cutting leads on the circuit board 15, the distance between the two guide rails 4 is adjusted according to the width of the circuit board 15, ensuring the circuit board 15 is inserted into the guide rails 4. The height of the two guide rails 4 is adjusted according to the required lead height, so that the upper surface of the shearing blade is flush with the circuit board 15. After aligning the cutting plane of the circuit board 15, adjust the moving mechanism 5 and turn on the first motor 3. The moving mechanism 5 drives the circuit board 15 to move from right to left, while the first motor 3 drives the cutting blade 1 to rotate. After the circuit board 15 passes the cutting blade 1, all the pins at the bottom of the circuit board 15 are cut off. The cutting efficiency is high. During the cutting process, the pins are cut downwards. After the cutting is completed, the pins fall directly into the receiving box 6 under the action of gravity. Under the protection of the side wall of the working box 2, it is not only convenient to collect the cut pins, but also greatly improves safety.

[0031] Furthermore, since the spacing between the two guide rails 4 can be adjusted, it can be used for circuit boards 15 of different widths, thus having a wide range of applicability. In addition, the height of the guide rails 4 can be adjusted, thus allowing for different pin retention lengths and expanding the range of applications.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be understood that the specific embodiments described herein are only for understanding this utility model and are not intended to limit this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

Claims

1. A circuit board pin chamfering apparatus comprising a shearing knife, characterized by: It also includes a rectangular work box, a serrated shearing blade, and a first motor that can drive the shearing blade to rotate. The body of the first motor is fixed above the center of the bottom plate of the work box. Inside the work box, above the shearing blade, there are two guide rails that can be adjusted in distance and height. The circuit board is sandwiched in the two guide rails and can move left and right along the guide rails. Below the top plate inside the work box, there is a moving mechanism that can drive the circuit board to move left and right. Inside the work box, below the shearing blade, there is a removable receiving box. The right side wall of the work box is set with an openable door.

2. A circuit board pin chamfering device as defined in claim 1 wherein: A protective cover is installed inside the work box on the outside of the first motor.

3. A circuit board pin clipper according to claim 1, wherein: Each of the two guide rail plates has a first nut block at its lower left and right ends. The two first nut blocks at the left end of the two guide rail plates and the two first nut blocks at the right end of the two guide rail plates are respectively threaded to a first screw. The threads at the front and rear ends of the first screw have opposite directions. The front and rear ends of the first screw are rotatably connected to the front and rear side walls of the work box. A second motor is connected to the front end of each first screw. A first guide rod is parallel to one side of each first screw. Each first guide rod is slidably connected to two first nut blocks. The front and rear ends of the first guide rod are fixedly connected to the front and rear side walls of the work box.

4. A circuit board pin chamfering device as defined in claim 3 wherein: Each guide rail plate is rotatably connected to an adjusting rod at the position where the first nut block is set. The lower end of the adjusting rod extends out of the guide rail plate and has a threaded section. The threaded section is threadedly connected to the nut block. The upper end of the adjusting rod extends out of the guide rail plate and is fixedly connected to the screwing head.

5. The apparatus of claim 1 wherein: the first and second cutting edges are substantially parallel to each other; and the first and second cutting edges are substantially perpendicular to the first and second cutting surfaces. 5 The moving mechanism includes a bottom pressure plate, and a telescopic rod is provided above the bottom pressure plate. The telescopic rod is located above the work box and can be moved left and right by a left and right adjustment mechanism. A downward protruding plate is provided below the right side rib of the bottom plate. A pressing plate that can slide back and forth is provided on both the left and right sides of the bottom plate. Two tightening bolts that can press against the pressing plate are threaded on the pressing plate. A pressure plate that can press against the circuit board is provided on the lower rear side of the left pressing plate and the lower front side of the right pressing plate.

6. A circuit board pin chamfering device as defined in claim 5 wherein: The bottom of the pressure relief plate is provided with a rubber layer.

7. A circuit board pin clip angle device as defined in claim 5 wherein: The left and right adjustment mechanism includes a second nut block, which is slidably connected to the top plate of the work box. The upper part of the work box is provided with a second screw and a second guide rod extending left and right. The left and right ends of the second screw are rotatably set on the left and right side walls of the work box, and one end of the second screw passes through the work box and is connected to a third motor. The left and right ends of the second guide rod are fixedly set on the left and right side walls of the work box. The second screw passes through the second nut block and is threadedly connected to the second nut block. The second guide rod passes through the second nut block and is slidably connected to the second nut block.

8. A circuit board pin clip angle device according to any one of claims 1-7, characterized in that: The four side walls of the work box are all made of transparent material.

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