PCB board and DIP assembly device thereof

Abstract

The application discloses a PCB and a DIP assembling device thereof, which comprises a PCB and a DIP assembling device of the PCB, and the PCB comprises a PCB main body and a resistor. The pin of the resistor comprises a first pin and a second pin. The first pin is fixedly connected with the resistor, and the bottom of the first pin is shaped into a K-shaped structure after shaping. The bottom of the K-shaped structure is provided with a connecting portion with the same thickness as the PCB main body. The resistance of the second pin is greater than that of the first pin. The bottom of the first pin is provided with a containing hole, the top end of the second pin is provided with a protrusion, and the second pin is provided with a channel. When the resistor is assembled to the PCB main body, the second pin is fixedly installed at the bottom of the connecting portion. The DIP assembling device of the PCB utilizes magnetic force to guide the resistor to be installed, so that the assembling precision is greatly improved, and the purpose of mechanical installation is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of PCB board manufacturing, specifically to a PCB board and its DIP assembly device. Background Technology

[0002] DIP (Device In-line Package) technology follows SMT (Surface Mount Technology) and is part of the PCBA (Printed Circuit Board Assembly) process. Some DIP components have long leads that need to penetrate the PCB for installation, making them unsuitable for automated installation using specialized equipment. Resistors, in particular, have long leads that require reshaping for vertical mounting, necessitating the reshaping of the leads to allow installation in non-support hole locations. Installing electronic components requiring such reshaping often demands extensive experience.

[0003] Existing technology ZL201811296946.1 describes a PCB board and its DIP device, which solves the problem of balancing wave soldering and signal quality assurance during DIP device soldering by setting pins with different resistances. This solution greatly improves the post-soldering performance of the DIP device, but it cannot achieve the purpose of machine assembly.

[0004] After in-depth research, applying the ideas of the above-mentioned existing technologies to DIP devices can greatly improve the assembly effect. However, for electronic devices such as resistors, it is necessary to shape the pins. The shaped position serves as a support position. In order to set a second pin with greater resistance, the pin length needs to be increased, which increases the difficulty of automated assembly. Summary of the Invention

[0005] The purpose of this invention is to provide a PCB board and its DIP assembly device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a PCB board, comprising a PCB board body, the PCB board further comprising a resistor, the resistor having a first pin and a second pin, the first pin being fixedly connected to the resistor, the bottom of the first pin being shaped to form a K-shaped structure, the bottom of the K-shaped structure having a connecting portion with the same thickness as the PCB board body, the resistance of the second pin being greater than that of the first pin, the bottom of the first pin having a receiving hole, the top of the second pin having a protrusion, and the second pin having a through-hole, and being fixedly mounted at the bottom of the connecting portion when the resistor is assembled to the PCB board body.

[0007] A DIP assembly device for PCBs, used for assembling PCB boards, the assembly device comprising: A PCB board transport device, wherein the PCB board transport device transports PCB boards; A glue spraying device sprays adhesive onto the raised surface of a second pin, the second pin being mounted on a fixture; A fixture transport device transports the fixture to a position below the PCB board transport device. The fixture is equipped with two elastic support seats, and a magnetic rod is mounted on each elastic support seat. The magnetic rod passes through the channel of the second pin, and the top of the magnetic rod is positioned above the channel. The width of the fixture is adjustable. The robotic arm, positioned on one side of the PCB board transport device, moves the resistor above the mounting holes on the PCB board; wherein... When the PCB board transport device transports the PCB board to the assembly station, the second pin is located directly below the mounting hole of the PCB board, and the magnetic rod passes through the mounting hole. The magnetic force of the magnetic rod guides the first pin to be aligned with the mounting hole. The robot arm drives the resistance to drop, and the first pin is inserted into the mounting hole and fixed to the second pin. Finally, the magnetic rod disengages from the through hole, and the fixture disengages from the second pin.

[0008] Furthermore, the PCB board transport device includes a support, belts, conveyor rollers, clamps, and a motor. Two belts are provided, and the conveyor rollers are rotatably mounted on the support. The two belts are respectively fitted onto the two ends of the conveyor rollers. The motor is connected to the conveyor rollers, and multiple clamps are provided and are equally spaced on the two belts.

[0009] Furthermore, the adhesive spraying device includes a nozzle, a storage tank, a pump, and a housing. There are two storage tanks, which store an adhesive aid and hot melt adhesive powder, respectively. The pump sprays a measured amount of the adhesive aid and hot melt adhesive powder from the two storage tanks onto the raised surface of the second pin. The nozzle is located on the top surface of the inner cavity of the housing.

[0010] Furthermore, the fixture transport device includes a first track, a second track, and a loading mechanism. The first track and the second track are arranged parallel to each other vertically and are both perpendicular to the PCB board transport device. The first track passes through the box and extends to the bottom of the fixture transport device. The second track is located below the first track below the PCB board transport device and extends out of the PCB board transport device. The loading mechanism places multiple fixtures on the first track, and the fixtures abut against each other in sequence.

[0011] Furthermore, the lower inner side of the first track is provided with a groove with a quarter-circle cross-section, and a support shaft is rotatably arranged in the groove. The fixture includes a base plate, left and right side plates, front and rear side plates, an elastic support seat, a rotating wheel, and a connecting rod assembly. The front and rear side plates are telescopic in the left and right direction. The left and right side plates are slidably mounted on the left and right sides of the base plate using sliding rods. The elastic support seat includes a base cylinder, a top cover, and a first spring. The base cylinder is mounted on the base plate, and the top cover is slidably mounted on the base cylinder. The first spring is located inside the base cylinder and supports the top cover. The magnetic... The lower side of the force bar is threaded, the upper cover is through-hole, the bottom plate is threaded, the magnetic rod passes through the through-hole of the upper cover and its lower part is threaded into the threaded hole, the bottom end of the magnetic rod is located below the threaded hole, the rotating wheel is fixedly mounted on the bottom end of the magnetic rod, the connecting rod assembly includes a first upright rod, a first crossbar, and a second upright rod, the first upright rod is fixedly mounted on the upper end face of the rotating wheel, the first crossbar is slidably mounted on the first upright rod, the second upright rod passes through the bottom plate and is fixedly connected to the sliding rod, the second upright rod and the first crossbar are rotatably connected, and the bottom plate is provided with a sliding groove.

[0012] Furthermore, the robotic arm includes a support frame, a horizontal plate, a vertical plate, a horizontal movement component, a vertical movement component, and a gripper. The support frame is positioned above the PCB board transport device. The horizontal plate is fixedly mounted on the support frame. The horizontal movement component is mounted on the horizontal plate. The vertical plate is mounted on the slider of the horizontal movement component. The vertical movement component is mounted on the vertical plate. The gripper is mounted on the slider of the vertical movement component. The gripper includes a mounting plate, an electric push rod, a guide rod, a fixed claw, and a movable claw. The mounting plate is mounted on the slider of the vertical movement component. The fixed claw is fixedly mounted on one side of the bottom surface of the mounting plate, the guide rod is mounted on the other side of the bottom surface of the mounting plate, the movable claw is slidably mounted on the guide rod, and the electric push rod is fixedly connected to the movable claw. The movable claw and the fixed claw have the same structure, both including a vertical rod, a horizontal rod and an arc rod. The arc rod is fixedly connected to the bottom end of the vertical rod, and the horizontal rod is mounted on the inner side of the vertical rod. When the fixed claw and the movable claw are combined, the two arc rods form a circle with a diameter larger than the diameter of the first pin. This circle forms a notch at the connection position of the vertical rod. The width of the notch is equal to the diameter of the first pin and equal to the distance between the two vertical rods.

[0013] Compared with the prior art, the present invention provides a PCB board and its DIP assembly device, which has the following beneficial effects: The PCB board provided by this application solves the problem of balancing wave soldering and ensuring signal quality by using a second pin that can be assembled later. On the other hand, it avoids the problem of inconvenient assembly due to excessively long pins, and provides the necessary conditions for realizing mechanical assembly.

[0014] The assembly device provided in this application achieves the purpose of automated assembly. Considering that the mounting holes on the PCB board are small and the pin length is too large, the assembly accuracy cannot be guaranteed. This application guides the running trajectory of the first pin by setting a magnetic rod, ensuring that the first pin can directly enter the mounting hole. Under the support of the elastic support, the assembly process of the first pin and the second pin is completed. The length of the second pin is about 2 mm. The assembly can be completed by interference fit. Then, glue is applied to the fit and the connection is tightened. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention; Figure 2 This is a top view of the present invention, showing the removal of the robotic arm. Figure 3 This is a schematic diagram of the fixture of the present invention installed in the fixture transport device; Figure 4 This is a schematic diagram of the resistor installation according to the present invention; Figure 5 This is a schematic diagram of the fit between the protrusion and the receiving hole in this invention; Figure 6 This is a partial schematic diagram of the robotic arm of the present invention.

[0016] In the diagram: Resistor-1, First pin-2, Second pin-3, K-shaped structure-4, Connector-5, Receiving hole-6, Protrusion-7, Channel-8, PCB board transport device-9, Bracket-10, Belt-11, Conveyor roller-12, Fixture-13, Motor-14, Glue spraying device-15, Fixture-16, Storage tank-17, Pump-18, Box-19, Magnetic rod-20, Fixture transport device-21, Elastic support seat-22, First track-23, Second track-24, Groove-25, Support shaft-26, Base plate-27, Left and right side plates-28, Front and rear side plates-2 9. Rotary wheel - 31. Connecting rod assembly - 32. Slide rod - 33. Bottom cylinder - 34. Top cover - 35. First spring - 36. Screw hole - 37. First upright - 38. First crossbar - 39. Second upright - 40. Slide groove - 41. Second spring - 42. Robotic arm - 43. Support frame - 44. Horizontal plate - 45. Vertical plate - 46. Horizontal movement assembly - 47. Vertical movement assembly - 48. Gripper - 49. Slider - 50. Mounting plate - 51. Electric push rod - 52. Guide rod - 53. Fixed claw - 54. Movable claw - 55. Upright rod - 56. Crossbar - 57. Arc rod - 58. Detailed Implementation

[0017] 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.

[0018] Please refer to the attached diagram. Example: A PCB board includes a PCB board body and a resistor 1. The resistor 1 has a first pin 2 and a second pin 3. The first pin 2 is fixedly connected to the resistor 1. After shaping, the bottom of the first pin 2 forms a K-shaped structure 4. The bottom of the K-shaped structure 4 has a connecting part 5 with the same thickness as the PCB board body. The resistance of the second pin 3 is greater than that of the first pin 2. The bottom of the first pin 2 has a receiving hole 6. The top of the second pin 3 has a protrusion 7. The second pin 3 has a through-hole 8. When the resistor 1 is assembled to the PCB board body, it is fixedly installed at the bottom of the connecting part 5. The K-shaped structure 4 of this application is shaped by a mold, with uniform overall size and strong controllability. The length of the connecting part 5 is uniform. The protrusion 7 and the receiving hole 6 cooperate to achieve connection. An adhesive and hot melt powder are sprayed on the surface of the protrusion 7. During subsequent soldering, the soldering temperature is used to melt the hot melt powder, further reinforcing the connection between the first pin 2 and the second pin 3.

[0019] A DIP assembly device for PCBs, used for assembling PCB boards, the assembly device comprising: A PCB board transport device 9 is used to transport PCB boards. The PCB board transport device 9 includes a support 10, belts 11, conveyor rollers 12, clamps 13, and a motor 14. Two belts 11 are provided. The conveyor rollers 12 are rotatably mounted on the support 10. The two belts 11 are respectively fitted onto the two ends of the conveyor rollers 12. The motor 14 is connected to the conveyor rollers 12. Multiple clamps 13 are provided and are evenly spaced on the two belts 11. The clamps 13 are set according to the size of the PCB board. The PCB board is transported by the belts 11. A contact switch on the support 10 detects the position of the clamps 13 and stops the transport at the assembly station.

[0020] The adhesive spraying device 15 sprays adhesive and hot melt powder onto the protrusion 7 of the second pin 3. The second pin 3 is mounted on the fixture 16. The adhesive spraying device 15 includes a nozzle (not shown), a storage tank 17, a pump 18, and a housing 19. There are two storage tanks 17, which store adhesive and hot melt powder respectively. The pump 18 sprays the adhesive and hot melt powder from the two storage tanks 17 onto the protrusion 7 of the second pin 3 in a metered manner. The nozzle is located on the top surface of the inner cavity of the housing 19. The flow rate of the nozzle is metered. First, the adhesive is sprayed, and then the hot melt powder is sprayed. The adhesive is also present on the surface of the magnetic rod 20. The fixture transport device 21 transports the fixture 16 to the area below the PCB board transport device 9. The fixture 16 has two elastic support seats 22, each with a magnetic rod 20. The magnetic rod 20 passes through the channel of the second pin 3, with its top end positioned above the channel. The width of the fixture 16 is adjustable. The fixture transport device 21 includes a first track 23, a second track 24, and a loading mechanism (not shown). The first track 23 and the second track 24 are arranged parallel vertically and are both perpendicular to the PCB board transport device 9. The first track 23 passes through the housing 19 and extends below the fixture transport device 21. The second track 24 is located below the PCB board transport device 9. Below the first track 23, a PCB board transport device 9 extends. The loading mechanism sets multiple fixtures 16 on the first track 23, and the fixtures 16 abut against each other in sequence. By adjusting the length of the fixtures 16, the position of the magnetic rod 20 is determined, thus achieving positioning. A groove 25 with a quarter-circle cross-section is opened on the inner side of the lower end of the first track 23. A support shaft 26 is rotatably arranged in the groove 25. The fixture 16 includes a base plate 27, left and right side plates 28, front and rear side plates 29, elastic support base 22, rotating wheel 31, and connecting rod assembly 32. The front and rear side plates 29 are telescopic in the left and right directions. The left and right side plates 28 are slidably arranged on the left and right sides of the base plate 27 by means of sliding rods 33. The elastic support base 22 includes... The system includes a base cylinder 34, an upper cover 35, and a first spring 36. The base cylinder 34 is mounted on a base plate 27. The upper cover 35 is slidably mounted on the base cylinder 34. The first spring 36 is located inside the base cylinder 34 and supports the upper cover 35. The lower side of the magnetic rod 20 has threads. The upper cover 35 has a through hole. The base plate 27 has a screw hole 37. The magnetic rod 20 passes through the through hole of the upper cover 35, and its lower part is threaded into the screw hole. The bottom end of the magnetic rod 20 is located below the screw hole. The rotating wheel 31 is fixedly mounted on the bottom end of the magnetic rod 20. The connecting rod assembly 32 includes a first upright rod 38, a first crossbar 39, and a second upright rod 40. The first upright rod 38 is fixedly mounted on the upper end of the rotating wheel 31. The first horizontal bar 39 is slidably mounted on the first vertical bar 38. The second vertical bar 40 passes through the base plate 27 and is fixedly connected to the slide bar 33. The second vertical bar 40 and the first horizontal bar 39 are rotatably connected. A groove 41 is provided on the base plate 27. To facilitate smoother unfolding of the slide bar 33, a second spring 42 is installed in the groove 41. The second spring 42 pushes the slide bar 33 to slide outward. When the magnetic rod 20 is lowered under force, it rotates under the positive pressure of the thread. This rotation causes the magnetic rod to disengage from the first pin 2 and the second pin 3. This disengagement is caused by the adhesive. At the same time, the rotating magnetic rod 20 drives the rotating wheel 31 to rotate. Because the first horizontal bar 39 and the first vertical bar 38 can slide up and down, the magnetic rod 20 is not directly connected to the first horizontal bar 39.When the rotating wheel 31 rotates, the first upright rod 38 drives the first horizontal rod 39 to move, which in turn drives the second upright rod 40 to move along the slide groove 41, pulling the slide rod 33 to slide inward. This causes the left and right side plates 28 to move closer together, ultimately reducing the width of the fixture 16. After the width is reduced, the fixture 16 falls onto the second track 24 under gravity, and the second pin 3 is fixed to the PCB board.

[0021] A robotic arm 43 is mounted on one side of the PCB board transport device 9. The robotic arm 43 moves the resistor 1 above the PCB board mounting hole. The robotic arm 43 includes a support frame 44, a horizontal plate 45, a vertical plate 46, a horizontal movement component 47, a vertical movement component 48, and a gripper 49. The support frame 44 is positioned above the PCB board transport device 9. The horizontal plate 45 is fixedly mounted on the support frame 44. The horizontal movement component 47 is mounted on the horizontal plate 45. The vertical plate 46 is mounted on the slider 50 of the horizontal movement component 47. The vertical movement component 48 is mounted on the vertical plate 46. The gripper 49 is mounted on the slider 50 of the vertical movement component 48. The gripper 49 includes a mounting plate 51, an electric push rod 52, a guide rod 53, a fixed claw 54, and a movable claw 55. The mounting plate 51 is mounted on the slider 50 of the vertical movement component 48, and the fixed claw 54 is fixedly mounted on the mounting plate 51. On one side of the bottom surface of the mounting plate 51, the guide rod 53 is set on the other side of the bottom surface of the mounting plate 51. The movable claw 55 is slidably set on the guide rod 53. The electric push rod 52 is fixedly connected to the movable claw 55. The movable claw 55 and the fixed claw 54 have the same structure, both including a vertical rod 56, a horizontal rod 57 and an arc rod 58. The arc rod 58 is fixedly connected to the bottom end of the vertical rod 56. The horizontal rod 57 is set on the inner side of the vertical rod 56. When the fixed claw 54 and the movable claw 55 are combined, the two arc rods 58 form a circle with a diameter larger than the diameter of the first pin 2. This circle forms a notch at the connection position of the vertical rod 56. The width of the notch is equal to the diameter of the first pin 2 and equal to the distance between the two vertical rods 56. This circle can roughly locate the position of the resistor 1 on the one hand, and allow the resistor 1 to swing within a small range on the other hand. With the magnetic guidance of the magnetic rod 20, a material rack is set on one side of the PCB board transport device 9. The electric push rod 52 drives the movable claw 55 to move to complete the feeding and unloading actions.

[0022] When the PCB board transport device 9 transports the PCB board to the assembly station, the second pin 3 is located directly below the mounting hole of the PCB board, and the magnetic rod 20 passes through the mounting hole. The magnetic force of the magnetic rod 20 guides the first pin 2 to face the mounting hole. The robot arm 43 drives the resistor 1 to descend, and the first pin 2 is inserted into the mounting hole and fixed to the second pin 3. Finally, the magnetic rod 20 is disengaged from the through hole, and the fixture 16 is disengaged from the second pin 3.

[0023] Working principle: The robot arm 43 picks up the resistor 1, and the first pin 2 of the resistor 1 is shaped by the mold. Then the resistor 1 is moved to the assembly station. The jig 16 is loaded onto the first track 23 by the feeding mechanism. The jig 16 abuts against the first track one by one. The PCB board transport device 9 drives the PCB board to move. Because of the elastic support 22, when the PCB board passes the magnetic rod 20, the magnetic rod 20 is pressed down. When the magnetic rod 20 is facing the mounting hole, the magnetic rod 20 extends out of the mounting hole. At this time, the preparation for the assembly of the first pin 2 and the second pin 3 is completed.

[0024] At this point, the resistor 1 is slowly lowered. The magnetic rod 20 guides the first pin 2 of the resistor 1 close to the mounting hole. As the resistor 1 decreases, the first pin 2 pushes the magnetic rod 20 down and into the mounting hole. The continuous decrease of the resistor 1 will push the elastic support 22 down. Eventually, the elastic support 22 can no longer descend. At this point, the first pin 2 and the second pin 3 are assembled, the protrusion 7 and the receiving hole 6 are assembled, and the adhesive helps to connect them. The receiving hole 6 and the protrusion 7 are connected according to the size. This connection is not firm. After the PCB board is assembled with the first pin 2 and the second pin 3, the second pin 3 is soldered. The hot melt adhesive powder melts and then cools down, and the first pin 2 and the second pin are firmly connected.

[0025] During the above process, the magnetic rod 20 descends, the rotating wheel 31 rotates, reducing the width of the fixture 16, and the fixture 16 disengages from the first track 23 and falls into the second track 24. At this point, the magnetic rod 20 has disengaged from the second pin 3.

[0026] The fixture 16 located on the second track 24 is recovered, and the assembled PCB board is transported to the next step for soldering.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A DIP assembly device for a PCB, the DIP assembly device being used to assemble a PCB board body and resistors, characterized in that: The resistor has a first pin and a second pin. The first pin is fixedly connected to the resistor. After shaping, the bottom of the first pin forms a K-shaped structure. The bottom of the K-shaped structure has a connecting part with the same thickness as the PCB board body. The resistance of the second pin is greater than that of the first pin. The bottom of the first pin has a receiving hole, and the top of the second pin has a protrusion. The second pin has a through-hole and is fixedly installed at the bottom of the connecting part when the resistor is assembled to the PCB board body. The DIP of the PCB board is achieved by an assembly device. The assembly device includes a PCB board transport device, which transports PCB boards. A glue spraying device sprays adhesive onto the raised surface of a second pin, the second pin being mounted on a fixture; A fixture transport device transports the fixture to a position below the PCB board transport device. The fixture is equipped with two elastic support seats, and a magnetic rod is mounted on each elastic support seat. The magnetic rod passes through the channel of the second pin, and the top of the magnetic rod is positioned above the channel. The width of the fixture is adjustable. The robotic arm is positioned on one side of the PCB board transport device. The robotic arm moves the resistor above the mounting hole on the PCB board. When the PCB board transport device transports the PCB board to the assembly station, the second pin is located directly below the mounting hole on the PCB board, and a magnetic rod passes through the mounting hole. The magnetic force of the magnetic rod guides the first pin to be aligned with the mounting hole. The robotic arm causes the resistor to drop, and the first pin is inserted into the mounting hole and fixedly connected to the second pin. Finally, the magnetic rod disengages from the through hole, and the fixture disengages from the second pin.

2. The DIP assembly device for a PCB according to claim 1, characterized in that: The PCB board transport device includes a support, belts, conveyor rollers, clamps, and a motor. Two belts are provided, and the conveyor rollers are rotatably mounted on the support. The two belts are respectively fitted onto the two ends of the conveyor rollers. The motor is connected to the conveyor rollers. Multiple clamps are provided and are evenly spaced on the two belts.

3. The DIP assembly device for a PCB according to claim 2, characterized in that: The adhesive spraying device includes a nozzle, a storage tank, a pump, and a housing. There are two storage tanks, which store an adhesive aid and hot melt adhesive powder, respectively. The pump sprays a measured amount of the adhesive aid and hot melt adhesive powder from the two storage tanks onto the raised surface of the second pin. The nozzle is located on the top surface of the inner cavity of the housing.

4. The DIP assembly device for a PCB according to claim 3, characterized in that: The fixture transport device includes a first track, a second track, and a loading mechanism. The first track and the second track are arranged parallel to each other and are both perpendicular to the PCB board transport device. The first track passes through the box and extends to the bottom of the fixture transport device. The second track is located below the first track below the PCB board transport device and extends out of the PCB board transport device. The loading mechanism places multiple fixtures on the first track, and the fixtures abut against each other in sequence.

5. A DIP assembly device for a PCB according to claim 4, characterized in that: The lower inner side of the first track has a groove with a quarter-circle cross-section, in which a support shaft is rotatably mounted. The fixture includes a base plate, left and right side plates, front and rear side plates, an elastic support seat, a rotating wheel, and a connecting rod assembly. The front and rear side plates are telescopic in the left and right direction. The left and right side plates are slidably mounted on the left and right sides of the base plate using sliding rods. The elastic support seat includes a base cylinder, a top cover, and a first spring. The base cylinder is mounted on the base plate, and the top cover is slidably mounted on the base cylinder. The first spring is located inside the base cylinder and supports the top cover. The magnetic rod... The lower side of the device is threaded, the upper cover is through-hole, the bottom plate is threaded, the magnetic rod passes through the through-hole of the upper cover and is threadedly engaged with the threaded hole at its lower part, the bottom end of the magnetic rod is located below the threaded hole, the rotating wheel is fixedly mounted on the bottom end of the magnetic rod, the connecting rod assembly includes a first upright rod, a first crossbar, and a second upright rod, the first upright rod is fixedly mounted on the upper end face of the rotating wheel, the first crossbar is slidably mounted on the first upright rod, the second upright rod passes through the bottom plate and is fixedly connected to the sliding rod, the second upright rod and the first crossbar are rotatably connected, and the bottom plate is provided with a sliding groove.

6. The DIP assembly device for a PCB according to claim 5, characterized in that: The robotic arm includes a support frame, a horizontal plate, a vertical plate, a horizontal movement component, a vertical movement component, and a gripper. The support frame is positioned above the PCB board transport device. The horizontal plate is fixedly mounted on the support frame. The horizontal movement component is mounted on the horizontal plate. The vertical plate is mounted on the slider of the horizontal movement component. The gripper is mounted on the vertical movement component's slider. The gripper includes a mounting plate, an electric push rod, a guide rod, a fixed claw, and a movable claw. The mounting plate is mounted on the slider of the vertical movement component. The fixed claw is fixedly mounted on one side of the bottom surface of the mounting plate, the guide rod is mounted on the other side of the bottom surface of the mounting plate, the movable claw is slidably mounted on the guide rod, and the electric push rod is fixedly connected to the movable claw. The movable claw and the fixed claw have the same structure, both including a vertical rod, a horizontal rod, and an arc-shaped rod. The arc-shaped rod is fixedly connected to the bottom end of the vertical rod, and the horizontal rod is mounted on the inner side of the vertical rod. When the fixed claw and the movable claw are combined, the two arc-shaped rods form a circle with a diameter larger than the diameter of the first pin. This circle forms a notch at the connection position of the vertical rod. The width of the notch is equal to the diameter of the first pin and equal to the distance between the two vertical rods.

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