Pin extraction device

Abstract

The utility model discloses a pin removing equipment, pin removing equipment includes: shell, control device, snatchs and puts, snatchs and puts and control device transmission connection, control device selectively drives snatchs and puts to move up and down, snatchs and puts includes a plurality of circumferential interval arrangement's hand part, and the pin fixing hole is formed between a plurality of hand parts, extrusion limit ring, extrusion limit ring is fixed in the shell and is around setting in the outer periphery of snatchs and puts, snatchs and puts can move up and down relative extrusion limit ring, and control device when driving snatchs and puts to move upwards, extrusion limit ring extrudes a plurality of hand parts. Therefore, by making control device when driving snatchs and puts to move upwards, extrusion limit ring extrudes a plurality of hand parts, to make the circumferential mutual approach between two adjacent hand parts, reduce the aperture of pin fixing hole, to snatch pin, like this can provide vertical upward force for pin, prevent pin from deforming or breaking down and so on during the removal process.

Description

Technical Field

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

[0002] In the manufacturing process of printed circuit boards (PCBs), attaching pins is a common procedure. These pins typically serve to position and secure the PCB. If pins are used to fix the PCB to a tool board, then removing the pins from the tool board will also be necessary.

[0003] In related technologies, when removing a pin, the pliers are used to clamp the upper part of the pin that is not embedded in the tool plate. By leveraging the principle, the pliers handle is pressed down to pull the pin out of the tool plate. Although this can successfully remove the pin from the tool plate, it will cause the pin to bend, making it difficult to reuse the pin. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a pin removal device with a more reliable structure that can prevent deformation of the pin during the removal process.

[0005] The pin removal device according to this utility model includes: a housing; a control device disposed within the housing; a gripping and releasing member disposed within the housing and pulsatorically connected to the control device, the control device selectively driving the gripping and releasing member to move up and down, the gripping and releasing member including a plurality of circumferentially spaced gripper portions, with pin fixing holes formed between the plurality of gripper portions; and a compression limiting ring fixed within the housing and surrounding the outer periphery of the gripping and releasing member, the gripping and releasing member being movable up and down relative to the compression limiting ring, wherein when the control device drives the gripping and releasing member to move upward, the compression limiting ring compresses the plurality of gripper portions, causing adjacent gripper portions to circumferentially approach each other, reducing the diameter of the pin fixing holes, thereby gripping the pin.

[0006] Therefore, by causing the control device to push the gripping and releasing parts upward, the squeezing and limiting ring squeezes multiple gripper parts, so that the circumferential approach between two adjacent gripper parts reduces the diameter of the pin fixing hole, thereby gripping the pin. This provides a vertical upward force to the pin, preventing the pin from deforming or breaking during the removal process.

[0007] In some examples of this utility model, there are four gripper parts, which are evenly spaced in the circumferential direction.

[0008] In some examples of this utility model, the gripping and releasing member further includes a transmission engagement part, which is disposed on one side of the plurality of grippers adjacent to the control device. A gear is disposed at one end of the control device adjacent to the transmission engagement part. The transmission engagement part is a rack part, and the gear part meshes with the rack part. The gear part selectively drives the rack part to move up and down.

[0009] In some examples of this utility model, the gear component is located on opposite radial sides of the rack portion.

[0010] In some examples of this utility model, a first guide groove is provided inside the outer shell, a first guide slider is sleeved on the outer periphery of the gripping member, the gripping member is disposed in the first guide groove, and the first guide slider and the first guide groove are slidably guided and engaged.

[0011] In some examples of this utility model, the control device further includes a handle and a lever assembly, one end of which is connected to the handle and the other end of which is connected to the gear.

[0012] In some examples of this utility model, the lever assembly includes a first lever, a second lever, and a third lever. The first lever extends in the vertical direction and its upper end is connected to the handle. The second lever is rotatably connected to the lower end of the first lever, and there are two of them. The two second levers are arranged opposite each other in the radial direction of the first lever, and the radial distance between the two second levers gradually increases in the downward direction. The third lever is rotatably connected to the lower end of the second lever, and there are two of them. The two third levers correspond one-to-one with the two second levers, and the radial distance between the two third levers gradually decreases in the downward direction. The gear is disposed at the lower end of the third lever.

[0013] In some examples of this utility model, the third lever is provided with a second guide groove extending in the length direction, and a second guide slider is provided at the lower end of the second lever, the second guide slider and the second guide groove being slidably guided and engaged.

[0014] In some examples of this utility model, a rotatable shaft is connected between the end of the third lever adjacent to the gear and the housing, the shaft passing through the center of the gear and connected to the gear.

[0015] In some examples of this utility model, an elastic element is provided between the handle and the housing.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a partial schematic diagram of a pin removal device according to an embodiment of the present utility model;

[0019] Figure 2 This is a partial schematic diagram of a pin removal device according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of a pin removal device according to an embodiment of the present utility model.

[0021] Figure label:

[0022] 100. Pin removal equipment;

[0023] 10. Outer casing;

[0024] 20. Control device; 201. Handle; 202. Lever assembly; 2021. First lever; 2022. Second lever; 2023. Third lever;

[0025] 30. Gripper / release component; 301. Gripper handle; 302. Pin fixing hole;

[0026] 40. Extrusion limiting ring;

[0027] 50. Transmission mating parts; 60. Gear components; 70. Rotating shaft;

[0028] 80. First guide groove; 90. First guide slider. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0030] The following is for reference. Figures 1-3 Description of a pin removal device 100 according to an embodiment of the present utility model.

[0031] Combination Figures 1-3 As shown, the pin removal device 100 according to this utility model mainly includes: a housing 10, a control device 20, a gripping and releasing member 30, and a compression limiting ring 40. The control device 20 is disposed inside the housing 10, which not only prevents external dust, moisture, impurities, etc., from entering the control device 20, providing a stable operating environment for the control device 20 and ensuring its normal operation, but also improves the safety of the control device 20 during operation.

[0032] Furthermore, the gripper 30 is disposed within the housing 10 and is connected to the control device 20 via a transmission connection. The control device 20 selectively drives the gripper 30 to move up and down. The gripper 30 includes a plurality of circumferentially spaced gripper portions 301, with pin fixing holes 302 formed between the plurality of gripper portions 301. Specifically, the gripper 30 is connected to the control device 20 via a transmission connection, and the control device 20 transmits force to the gripper 30 to selectively drive the gripper 30 to move up and down. The lower end of the gripper 30 is provided with a plurality of circumferentially spaced gripper portions 301, with pin fixing holes 302 formed between the plurality of gripper portions 301. When the pin is not fully embedded in the tool plate, the pin fixing holes 302 can be used to fix the part of the pin that is not embedded in the tool plate, so as to facilitate the removal of the pin from the tool plate. It should be noted that the gripper 301 protrudes from the outer shell 10 in the vertical direction toward the side away from the control device 20, so as to facilitate the gripper 301 to grip the pin. In some specific embodiments of this utility model, the vertical dimension of the protruding part of the gripper 301 relative to the outer shell 10 can be set to 2mm, but is not limited to 2mm. The vertical dimension of the protruding part of the gripper 301 relative to the outer shell 10 can be adjusted according to specific needs and specific structures.

[0033] Furthermore, the compression limiting ring 40 is fixed inside the housing 10 and surrounds the outer periphery of the gripping member 30. The gripping member 30 can move up and down relative to the compression limiting ring 40. When the control device 20 drives the gripping member 30 to move upward, the compression limiting ring 40 compresses multiple gripper portions 301 so that two adjacent gripper portions 301 are circumferentially closer to each other, reducing the diameter of the pin fixing hole 302 to grip the pin. Specifically, when the compression limiting ring 40 does not exert a compression effect on it due to the up-and-down movement of the gripping and releasing member 30, the distance between two adjacent gripper portions 301 is at its maximum value, and the pin fixing hole 302 is at its maximum diameter. When the pin removal device 100 is used to remove the pin, firstly, the part of the pin that is not embedded in the tool plate is placed in the pin fixing hole 302. Then, the gripping and releasing member 30 is driven to move upward by the control device 20. During the upward movement of the gripping and releasing member 30, the compression limiting ring 40 surrounding the gripping and releasing member 30 will compress the multiple gripper portions 301 that are circumferentially spaced, so that the two adjacent gripper portions 301 are circumferentially closer to each other, thereby reducing the distance between the two adjacent gripper portions 301 and reducing the diameter of the pin fixing hole 302. This makes the upper side of the part of the pin that is not embedded in the tool plate fit tightly against the inner wall of the pin fixing hole 302. In this way, the gripping and releasing member 30 can drive the pin to move upward together, thereby removing the pin and pulling it out of the tool plate. It should be noted that the tool board is placed horizontally, and the direction in which the pin is embedded in the tool board is perpendicular to the placement surface of the tool board. The moving direction of the gripping member 30 is also always perpendicular to the placement surface of the tool board. This is to provide a force perpendicular to the placement surface of the tool board to the pin through the gripping member 30, ensuring that the force on the pin is always perpendicular to the placement surface of the tool board. This prevents the pin from deforming or breaking during removal, thus not only allowing the pin to be reused and reducing replacement costs, but also preventing damage to the tool board caused by pin deformation or breakage. The direction perpendicular to the placement surface of the tool board is the up-down direction.

[0034] Therefore, by causing the control device 20 to move the gripping and releasing member 30 upward, the squeezing and limiting ring 40 squeezes the multiple gripper portions 301, so that the two adjacent gripper portions 301 are circumferentially close to each other, reducing the diameter of the pin fixing hole 302 to grip the pin. This ensures that the force direction of the pin when it is pulled out is vertically upward and always consistent, thereby preventing the pin from deforming or breaking during the removal process.

[0035] In some embodiments of this utility model, the pin is cylindrical, and the diameter of the pin is mostly set between 0.8 and 5 mm. The diameter of the pin fixing hole 302 formed between the multiple gripper parts 301 of the gripper 30 is set as D1, and D1 satisfies the relationship: 0.8 mm ≤ D1 ≤ 5 mm. The diameter of the pin fixing hole 302 can be adjusted according to the specific pin size and application requirements.

[0036] Combination Figure 1 and Figure 2 As shown, there are four gripper parts 301, which are evenly spaced in the circumferential direction.

[0037] Specifically, by setting four gripper parts 301, and the four gripper parts 301 are evenly spaced in the circumferential direction, it is not only convenient to apply force to the pin from different directions, making the force on the pin more uniform and preventing the pin from shifting or shaking during the gripping process, but also by adjusting the spacing between adjacent gripper parts 301, the pin fixing holes 302 formed between the gripper parts 301 can be adapted to pins of different sizes, which can improve the flexibility and versatility of the gripper parts 301.

[0038] Combination Figure 2 and Figure 3 As shown, the gripper 30 also includes a transmission engagement part 50. The transmission engagement part 50 is disposed on one side of the plurality of gripper parts 301 adjacent to the control device 20. A gear part 60 is disposed at one end of the control device 20 adjacent to the transmission engagement part 50. The transmission engagement part 50 is a rack part. The gear part 60 meshes with the rack part and selectively drives the rack part to move up and down.

[0039] Specifically, the transmission engagement part 50 is disposed on one side of the plurality of gripper parts 301 adjacent to the control device 20, and the transmission engagement part 50 is connected to the plurality of gripper parts 301 of the gripping and releasing member 30. By making the transmission engagement part 50 a rack and pinion part, and providing a gear part 60 at one end of the control device 20 adjacent to the transmission engagement part 50, the gear part 60 can selectively drive the rack and pinion part to move up and down through mutual meshing with the rack and pinion part. This allows the control device 20 to selectively drive the gripping and releasing member 30 to move up and down. This arrangement can improve the accuracy and stability of the transmission connection between the gripping and releasing member 30 and the control device 20, improve the transmission efficiency between the gripping and releasing member 30 and the control device 20, and improve the stability and accuracy of the up and down movement of the gripping and releasing member 30.

[0040] Combination Figure 2 and Figure 3 As shown, gear components 60 are located on opposite radial sides of the rack portion.

[0041] Specifically, by positioning the gear component 60 on both radially opposite sides of the rack portion, the gear component 60 can mesh with the rack portion on both radially opposite sides of the rack portion. This can counteract the lateral force generated by unilateral meshing, making the force on the rack portion more uniform. This not only improves the stability and reliability of the transmission connection between the gear component 60 and the rack portion, preventing the rack portion from shifting or tilting during transmission, but also improves the stability and reliability of the rack portion structure.

[0042] Combination Figure 2 and Figure 3 As shown, a first guide groove 80 is provided inside the outer shell 10, and a first guide slider 90 is sleeved on the outer periphery of the gripping and releasing member 30. The gripping and releasing member 30 is disposed in the first guide groove 80, and the first guide slider 90 and the first guide groove 80 are slidably guided and engaged.

[0043] Specifically, a first guide groove 80 is provided inside the outer casing 10, the gripping member 30 is disposed within the first guide groove 80, and a first guide slider 90 is sleeved on the outer periphery of the gripping member 30 and is also disposed within the first guide groove 80. The first guide slider 90 and the first guide groove 80 correspond to each other in structure and size. The first guide slider 90 and the first guide groove 80 are slidably guided and engaged. The first guide groove 80 can provide guidance for the first guide slider 90, guiding the movement direction and trajectory of the first guide slider 90. This helps the gripping member 30 to provide a force perpendicular to the pin fixing surface. In addition, the first guide groove 80 can also provide a constraint for the first guide slider 90, preventing the first guide slider 90 from shaking or deviating when sliding relative to the first guide groove 80. This can improve the accuracy and stability of the gripping member 30 when moving up and down, and prevent the gripping member 30 from shaking or deviating during the up and down movement.

[0044] Combination Figure 2 and Figure 3 As shown, the control device 20 also includes a handle 201 and a lever assembly 202. One end of the lever assembly 202 is connected to the handle 201, and the other end is connected to the gear 60.

[0045] Specifically, by connecting one end of the lever assembly 202 to the handle 201 and the other end to the gear 60, the force applied to the handle 201 can be transmitted to the gear 60 through the lever assembly 202, thereby driving the gear 60 to rotate. In turn, the gear 60 selectively drives the rack to move up and down. This not only ensures the rationality of the pin removal device 100's structural design but also ensures the normal operation of the pin removal device 100.

[0046] Combination Figure 2 and Figure 3As shown, the lever assembly 202 includes a first lever 2021, a second lever 2022, and a third lever 2023. The first lever 2021 extends in the vertical direction and its upper end is connected to the handle 201. The second lever 2022 is rotatably connected to the lower end of the first lever 2021, and there are two of them. The two second levers 2022 are arranged opposite each other in the radial direction of the first lever 2021, and the radial distance between the two second levers 2022 gradually increases in the downward direction. The third lever 2023 is rotatably connected to the lower end of the second lever 2022, and there are two of them. The two third levers 2023 correspond one-to-one with the two second levers 2022, and the radial distance between the two third levers 2023 gradually decreases in the downward direction. The gear 60 is disposed at the lower end of the third lever 2023.

[0047] Specifically, the first lever 2021 extends in the vertical direction and its upper end is connected to the handle 201. If a downward force is applied to the handle 201, the handle 201 will drive the first lever 2021 to move downward together. If an upward force is applied to the handle 201, the handle 201 will drive the first lever 2021 to move upward together.

[0048] Furthermore, the upper end of the second lever 2022 is rotatably connected to the lower end of the first lever 2021, and there are two second levers 2022. The two second levers 2022 are arranged opposite each other in the radial direction of the first lever 2021. In the downward direction, the radial distance between the two second levers 2022 gradually increases, and a certain angle is formed between the second lever 2022 and the first lever 2021. If the handle 201 is driven to move up and down, the angle formed between the second lever 2022 and the first lever 2021 will change.

[0049] Furthermore, the upper end of the third lever 2023 is rotatably connected to the lower end of the second lever 2022, and there are also two third levers 2023, with each of the two third levers 2023 corresponding to one of the two second levers 2022. In the downward direction, the radial distance between the two third levers 2023 gradually decreases, and a certain angle is formed between the second lever 2022 and the corresponding third lever 2023. If the handle 201 is driven to move up and down, the angle formed between the second lever 2022 and the corresponding third lever 2023 will change, and at the same time, the lower end of the second lever 2022 will drive the upper end of the third lever 2023 to produce displacement.

[0050] Furthermore, the gear component 60 is disposed at the lower end of the third lever 2023. The lower end of the third lever 2023 is fixedly connected to the center of the gear component 60. If the handle component 201 is driven to move up and down, the upper end of the third lever 2023 will rotate around the center of the gear component 60 under the driving action of the lower end of the second lever 2022. At the same time, the third lever 2023 will drive the gear component 60 to rotate around its own center.

[0051] Furthermore, two second levers 2022 are arranged radially opposite to the first lever 2021, and two third levers 2023 correspond one-to-one with the two second levers 2022. Gear components 60 are arranged at the lower end of the third levers 2023, and the gear components 60 are located on the radially opposite sides of the rack portion. That is to say, the lever device and the rack portion are symmetrical in structure. The gear components 60, the third levers 2023, and the second levers 2022 are all arranged on the radially opposite sides of the first lever 2021 and the rack portion. Each gear component 60 is connected to a corresponding third lever 2023, and each third lever 2023 is connected to a corresponding second lever 2022. This makes the force on the first lever 2021 and the rack portion more uniform, and makes the structure and operation of the lever device more stable and reliable.

[0052] In some embodiments of this utility model, a guide groove can be provided to guide the movement trajectory of the first lever 2021 and prevent the first lever 2021 from deviating or tilting during movement.

[0053] Combination Figure 2 and Figure 3 As shown, the third lever 2023 is provided with a second guide groove extending in the length direction, and the lower end of the second lever 2022 is provided with a second guide slider, which is slidably guided and engaged with the second guide groove.

[0054] Specifically, the third lever 2023 is provided with a second guide groove extending in the length direction, and the lower end of the second lever 2022 is provided with a second guide slider. The second guide slider and the second guide groove correspond in structure and size. The second guide slider and the second guide groove are slidably guided and engaged. This not only prevents the second lever 2022 and the corresponding third lever 2023 from being unable to slide relative to each other, thus preventing the second lever 2022 and the third lever 2023 from bending or breaking, but also provides guidance for the second guide slider, guiding the movement direction and trajectory of the second guide slider. This not only prevents the second guide slider from shaking or deviating, and prevents misalignment between the second lever 2022 and the corresponding third lever 2023 from causing the connection between the second lever 2022 and the third lever 2023 to fail, but also improves the accuracy and stability of the movement of the second guide slider and the lower end of the second lever 2022. This helps to ensure that the movement of the lower end of the second lever 2022 can drive the upper end of the third lever 2023 to move.

[0055] Combination Figure 2 and Figure 3 As shown, the third lever 2023 has a rotatable shaft 70 connected between one end of the gear and the housing 10. The shaft 70 passes through the center of the gear 60 and is connected to the gear 60.

[0056] Specifically, a rotatable shaft 70 is connected between one end of the third lever 2023 adjacent to the gear and the outer casing 10. That is, one end of the shaft 70 is fixedly connected to the third lever 2023, and the other end is rotatably connected to the outer casing 10. The shaft 70 passes through the center of the gear component 60 and is fixedly connected to the gear component 60. In other words, the shaft 70 can rotate relative to the outer casing 10, but it does not rotate relative to the gear component 60 and the third lever 2023. This allows the third lever 2023 to drive the gear component 60 to rotate normally, ensuring the rationality of the pin removal device 100's structural design and ensuring the normal operation of the pin removal device 100.

[0057] With this configuration, when using the pin removal device 100 to remove the pin, firstly, the portion of the pin not embedded in the tool plate is positioned within the pin fixing hole 302. Then, a downward force is applied to the handle 201, causing it to move downwards. Simultaneously, the handle 201 drives the first lever 2021 downwards, and the second lever 2022 rotates relative to the first lever 2021. Then, under the sliding engagement of the second guide groove and the second guide slider, the upper end of the third lever 2023 is driven to perform a counterclockwise circular motion around the axis of the rotating shaft 70. The moving gear 60 rotates counterclockwise around its own center. The gear 60 then drives the rack to move upward. The gripping and releasing member 30 moves upward relative to the compression and limiting ring 40. Under the compression of the compression and limiting ring 40, the distance between adjacent gripper parts 301 of the gripping and releasing member 30 becomes smaller, and the diameter of the pin fixing hole 302 formed between multiple gripper parts 301 becomes smaller. This causes the upper side of the part of the pin that is not embedded in the tool plate to fit tightly against the inner wall of the pin fixing hole 302. Then, the gripping and releasing member 30 drives the pin to move upward together, thereby pulling the pin out of the tool plate.

[0058] Combination Figure 2 and Figure 3 As shown, an elastic element is provided between the handle 201 and the housing 10. Specifically, during the process of removing the pin from the tool plate by the pin removal device 100, a downward force needs to be applied to the handle 201. At this time, the elastic element between the handle 201 and the housing 10 will deform under the action of the external force. After the pin is removed from the tool plate, no more force is applied to the handle 201, and the elastic element will return to its original shape. At the same time, the elastic element will generate a force on the handle 201 in the opposite direction to the applied force, that is, the elastic element will generate an upward force on the handle 201, causing the handle 201 to move upward. Simultaneously, the handle 201 drives the first lever 2021 to move upward, and the second lever 2022 rotates relative to the first lever 2021, and then drives the third lever 202. The upper end of 3 rotates clockwise around the axis of the rotating shaft 70, while the gear 60 rotates clockwise around its own center. The gear 60 drives the rack to move downward, and the gripping and releasing member 30 moves downward relative to the compression and limiting ring 40. The distance between adjacent gripper parts 301 of the gripping and releasing member 30 increases, and the diameter of the pin fixing hole 302 formed between multiple gripper parts 301 increases. As a result, the pin automatically disengages from the gripping and releasing member 30. In this way, by providing an elastic element between the handle 201 and the outer shell 10, the pin can be automatically disengaged from the pin removal device 100 after being pulled out from the tool plate. This is simple, convenient, and saves manpower and resources. It can also prevent the process of the pin disengaging from the pin removal device 100 from being difficult or complicated.

[0059] In other embodiments of this utility model, combined with Figure 1 and Figure 3 As shown, a third guide groove is provided inside the outer casing 10. The compression limiting ring 40 and the gripping member 30 are both located within the third guide groove inside the outer casing 10. The third guide groove is in contact with the compression limiting ring 40, and the compression limiting ring 40 surrounds the outer periphery of the gripping member 30. When the operating device 20 drives the gripping member 30 to move upward, the compression limiting ring 40 compresses multiple gripper portions 301, causing adjacent gripper portions 301 to circumferentially approach each other, reducing the diameter of the pin fixing hole 302 to grip the pin. During the upward movement of the gripper 30, due to the squeezing action of the squeezing restriction ring 40 on the gripper 301, the gripper 30 will generate an upward force on the squeezing restriction ring 40. At the same time, a certain frictional force will be generated between the squeezing restriction ring 40 and the third guide groove. When the squeezing restriction ring 40 squeezes the gripper to a certain extent, the force provided by the gripper 30 to the squeezing restriction ring 40 will overcome the frictional force between the squeezing restriction ring 40 and the third guide groove, causing the squeezing restriction ring 40 to move upward together with the gripper 30. Furthermore, a limiting block is provided on the lower side of the inner wall of the third guide groove to restrict the downward movement of the compression limiting ring 40. Specifically, when the gripping member 30 moves downward under the action of the elastic member, the compression limiting ring 40 moves downward along with the gripping member 30. When the compression limiting ring 40 moves to the limiting block, it stops moving downward under the action of the limiting block, while the gripping member 30 continues to move downward. The compression effect of the compression limiting ring 40 on the gripper part 301 gradually weakens, and the distance between two adjacent gripper parts 301 increases. The increased diameter of the pin fixing hole 302 allows the pin to disengage from the gripping and releasing member 30. This design not only ensures the normal pin removal function of the pin removal device 100 and provides a force perpendicular to the tool plate placement surface to the pin, preventing deformation or breakage during removal, but also ensures that the pin automatically disengages from the pin removal device 100 after being pulled out. This makes operation convenient and saves manpower and resources. Furthermore, the compression limiting ring 40, which can move relative to the third guide slide, reduces wear between the compression limiting ring 40 and the gripping and releasing member 30.

[0060] The pin removal device 100 according to this utility model can be applied to the production and manufacturing of printed circuit boards. Specifically, in the printed circuit board manufacturing process, in order to divide a large panel or motherboard into individual, usable circuit board units, or to meet the design requirements of specific shapes or sizes of printed circuit board products, a cutting device is used to cut part of the printed circuit board. Before cutting the printed circuit board, the printed circuit board is fixed to the tool plate of the cutting device by pins. The tool plate serves as a medium for supporting the processing table of the cutting device and the printed circuit board. After the cutting process is completed, the pins need to be removed from the tool plate.

[0061] Furthermore, since the pin removal device 100 has a more reliable structure and good working performance, its application in the production of printed circuit boards (PCBs) means that after the PCB is cut using a cutting device, the pin removal device 100 is used to remove the pins from the tool board. This prevents the pins from deforming or breaking during the removal process, thus allowing the pins to be reused, reducing replacement costs, and preventing damage to the tool board from pin deformation or breakage.

[0062] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A pin extractor apparatus, characterized by, include: Outer shell (10); Control device (20), the control device (20) is disposed inside the housing (10); A gripper (30) is disposed inside the housing (10) and is connected to the control device (20) via transmission. The control device (20) selectively drives the gripper (30) to move up and down. The gripper (30) includes a plurality of gripper portions (301) arranged circumferentially, and pin fixing holes (302) are formed between the plurality of gripper portions (301). A compression limiting ring (40) is fixed inside the housing (10) and surrounds the outer periphery of the gripper (30). The gripper (30) can move up and down relative to the compression limiting ring (40). When the control device (20) drives the gripper (30) to move upward, the compression limiting ring (40) squeezes multiple gripper parts (301) so that two adjacent gripper parts (301) are circumferentially close to each other, reducing the diameter of the pin fixing hole (302) to grip the pin.

2. The pin extraction device of claim 1, wherein, There are four gripper parts (301), which are evenly spaced in the circumferential direction.

3. The pin extraction device of claim 2, wherein, The gripper (30) further includes a transmission engagement part (50), which is disposed on one side of the plurality of gripper parts (301) adjacent to the control device (20). A gear part (60) is disposed at one end of the control device (20) adjacent to the transmission engagement part (50). The transmission engagement part (50) is a rack part, and the gear part (60) meshes with the rack part. The gear part (60) selectively drives the rack part to move up and down.

4. The pin extraction device of claim 3, wherein, The gear component (60) is located on opposite radial sides of the rack portion.

5. The pin extraction device of claim 2, wherein, The outer shell (10) is provided with a first guide groove (80), and the gripping and releasing member (30) is sleeved with a first guide slider (90) on its outer periphery. The gripping and releasing member (30) is disposed in the first guide groove (80), and the first guide slider (90) and the first guide groove (80) are slidably guided and cooperated.

6. The pin removal device of claim 3, wherein, The control device (20) also includes a handle (201) and a lever assembly (202), one end of which is connected to the handle (201) and the other end of which is connected to the gear (60).

7. The pin removal device according to claim 6, characterized in that, The lever assembly (202) includes a first lever (2021), a second lever (2022), and a third lever (2023). The first lever (2021) extends in the vertical direction and its upper end is connected to the handle (201). The second lever (2022) is rotatably connected to the lower end of the first lever (2021) and there are two of them. The two second levers (2022) are arranged opposite each other in the radial direction of the first lever (2021). In the downward direction, the radial distance between the two second levers (2022) gradually increases. The lower ends of the third lever (2023) and the second lever (2022) are rotatably connected and there are two of them. The two third levers (2023) correspond one-to-one with the two second levers (2022). In the downward direction, the radial distance between the two third levers (2023) gradually decreases. The gear (60) is disposed at the lower end of the third lever (2023).

8. The pin removal device according to claim 7, characterized in that, The third lever (2023) is provided with a second guide groove extending in the length direction, and the lower end of the second lever (2022) is provided with a second guide slider, which is slidably guided and engaged with the second guide groove.

9. The pin removal device according to claim 7, characterized in that, The third lever (2023) is connected to the housing (10) by a rotatable shaft (70) at one end near the gear, the shaft (70) passing through the center of the gear (60) and connected to the gear (60).

10. The pin removal device according to claim 6, characterized in that, An elastic element is provided between the handle (201) and the outer shell (10).

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