Chip pin inserting equipment

Abstract

The invention discloses chip pin inserting equipment, and relates to the technical field of pin inserting equipment, the chip pin inserting equipment comprises a sliding table, a lifting table, a center rod and a rotating piece, the lifting table is vertically and movably arranged on the sliding table, and the center rod is fixedly installed on the lifting table; the rotating part comprises a rotating drum and a sliding part, the rotating drum is rotatably connected with the center rod, the sliding part comprises a sliding rod, a guide rod and a plurality of picking units for picking chips, the sliding rod is slidably connected with the rotating drum, the guide rod is parallel to and fixedly connected with the sliding rod, and the picking units are distributed on the guide rod in the axial direction of the guide rod; the rotating piece enables all the picking units to have a downward target direction at the same time in the stroke that the rotating drum rotates on the center rod, and the sliding piece enables all the picking units disengaged from the target direction to rotate to the target direction one by one in the circumferential direction of the guide rod when passing through the center rod in the stroke that the sliding rod slides on the rotating drum. According to the invention, a plurality of chips can be grabbed at a time and inserted into a PCB one by one, and the chip grabbing efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of pin insertion equipment technology, specifically to a pin insertion device for chip pins. Background Technology

[0002] DIP packaged chips achieve electrical connection by vertically inserting two rows of parallel pins into PCB through holes. This is a common process in electronic assembly. There are usually two insertion methods. One is manual insertion, which is suitable for small-batch production or repair work. By gently pinching the two sides of the chip with your thumb and forefinger to ensure that the chip is vertical, the chip is placed on the PCB, and the two rows of pins are fully aligned with the corresponding through holes. Stable pressure is applied vertically downward to ensure that all pins are completely inserted through the PCB, with 1-2mm exposed on the back.

[0003] Another method is machine insertion, which is suitable for mass production. It uses an optical system to identify the target position on the PCB, and a robotic arm precisely presses the chip pins vertically into the PCB through-hole. The force is uniform and controllable, and the efficiency is much higher than that of manual insertion. The key to pin insertion is the control of the insertion angle. It must be kept basically perpendicular (with a deviation of less than 1°) to avoid problems such as some pins not being fully inserted or pins bending or deforming.

[0004] Currently, in the machine insertion method, the robotic arm can usually only grasp a single chip at a time, insert the grasped chip into the PCB, and then grasp the next chip. This results in a high path repetition rate and low chip grasping efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a chip pin insertion device to solve the problems of high path repetition rate and low chip grasping efficiency caused by the fact that the robotic arm can only grasp a single chip in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a chip pin insertion device, comprising a slide table, a lifting table, a central rod, and a rotating component. The lifting table is vertically movable on the slide table, and the central rod is fixedly installed on the lifting table. The rotating component includes a rotating cylinder and a sliding component. The rotating cylinder is rotatably connected to the central rod. The sliding component includes a sliding rod, a guide rod, and multiple chip pickup units. The sliding rod is slidably connected to the rotating cylinder, and the guide rod is parallel to and fixedly connected to the sliding rod. Each pickup unit is distributed on the guide rod along its axial direction. During the rotation of the rotating cylinder on the central rod, the rotating component ensures that each pickup unit simultaneously has a downward target orientation to pick up the chip. During the sliding of the sliding rod on the rotating cylinder, the sliding component enables each pickup unit that has deviated from its target orientation to rotate circumferentially along the guide rod to the target orientation to insert the chip.

[0007] Furthermore, the pickup unit includes a collar, a suction cup assembly, a trigger assembly, and an elastic element. The collar is movably sleeved on the guide rod, the suction cup assembly is fixedly installed on the collar, and the trigger assembly includes a trigger rod that is elastically slidably connected to the collar in the radial direction and a guide groove opened on the guide rod. The guide groove includes a first straight groove, a spiral groove, and a second straight groove connected in sequence. The second straight groove has an insertion hole that can accommodate the trigger rod in the radial direction of the collar. One end of the trigger rod is slidably connected to the guide groove, and the other end can slide and abut against the center rod. The elastic force of the elastic element acts on the collar in the direction of the first straight groove.

[0008] Furthermore, the trigger rod has an arc-shaped portion at the end away from the guide groove, and the center rod has a blocking portion that can block the arc-shaped portion and is adapted to the arc-shaped portion. The blocking portion and / or the arc-shaped portion have a wedge surface.

[0009] Furthermore, a first compression spring is sleeved on the trigger rod, with one end of the first compression spring abutting against the collar and the other end abutting against the arc-shaped part.

[0010] Furthermore, the elastic element includes a second compression spring, one end of which abuts against a limiting ring on the guide rod, and the other end of which abuts against a collar.

[0011] Furthermore, the slide is horizontally movably mounted on a bracket on the processing table and is driven to slide by a first driving component. The first driving component includes a first ball screw, the screw of the first ball screw is rotatably connected to the bracket, and the nut of the first ball screw is fixedly connected to the slide.

[0012] Furthermore, a feeding component for batch supplying chips is provided on one side of the processing table. During the movement of the slide table on the support, it can send each picking unit to the feeding component to pick up the chips.

[0013] Furthermore, the lifting platform is driven to lift by a second driving component, which includes a second ball screw. The screw of the second ball screw is rotatably connected to the slide, and the nut of the second ball screw is fixedly connected to the lifting platform.

[0014] Furthermore, the rotating drum is driven to rotate by a third driving component, which includes a first cylinder. The cylinder body of the first cylinder is rotatably connected to the lifting platform, and the piston rod of the first cylinder is eccentrically rotatably connected to the rotating drum.

[0015] Furthermore, the slide rod is driven to slide by a fourth driving member, which includes a second cylinder. The cylinder body of the second cylinder is fixedly connected to the rotating cylinder, and the piston rod of the second cylinder is fixedly connected to the slide rod.

[0016] Compared with the prior art, the chip pin insertion device provided by the present invention can pick up multiple chips at a time and insert them one by one into the PCB, with high chip picking efficiency; and during the sliding stroke of the slider, each picking unit that has moved away from the target position can rotate around the guide rod to the target position one by one when passing the center rod, so that when the lifting platform moves down to insert the pin, only one picking unit faces the target position, so that when the chip on the picking unit at the target position is inserted into the PCB, the other picking units will not cause obstruction. Attached Figure Description

[0017] To provide a clearer description of the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly introduced below.

[0018] Figure 1 A schematic diagram of the overall structure provided for the embodiment; Figure 2 A front view of the overall structure provided for the embodiment; Figure 3 Schematic diagram of the connection structure between the lifting platform and the rotating component provided in the embodiment. Figure I ; Figure 4 Schematic diagram of the connection structure between the lifting platform and the rotating component provided in the embodiment. Figure II ; Figure 5 A schematic diagram of the slider provided in the embodiment; Figure 6 This is a schematic diagram of the structure of the picking unit when it is separated from the target position, as provided in the embodiment. Figure 7 This is a schematic diagram of the structure of the picking unit when it is located at the target orientation, as provided in the embodiment. Figure 8 A cross-sectional view of the structure when the trigger rod is inserted into the socket is provided for the embodiment; Figure 9 A schematic diagram of the guide groove provided in the embodiment; Figure 10 This is a schematic diagram of the structure of the chip pins on each pickup unit when they are completed, as provided in the embodiment. Figure 11 This is a schematic diagram of the structure of each pickup unit picking up a chip from the feeding assembly, provided in the embodiment. Figure 12 This is a schematic diagram of the structure in which the bottom end of the trigger rod slides into the guide groove, as provided in the embodiment. Figure 13 A cross-sectional view of the structure provided in the embodiment when the bottom end of the trigger rod is located in the first straight groove; Figure 14 A cross-sectional view of the structure provided in the embodiment when the bottom end of the trigger rod is located inside the spiral groove; Figure 15 A cross-sectional view of the structure provided in the embodiment when the bottom end of the trigger rod is located in the second straight groove; Figure 16 This is a cross-sectional view of the structure provided in the embodiment when the bottom end of the trigger rod is located inside the socket.

[0019] Explanation of reference numerals in the attached figures: 1. Processing table; 2. Support; 3. Slide table; 4. First drive component; 5. Lifting table; 6. Second drive component; 7. Center rod; 71. Blocking part; 8. Rotary drum; 9. Third drive component; 10. Slide rod; 11. Guide rod; 12. Pick-up unit; 120. Collar; 121. Suction cup assembly; 122. Elastic element; 123. Trigger rod; 124. Arc-shaped part; 125. First compression spring; 126. First straight groove; 127. Spiral groove; 128. Second straight groove; 129. Insertion hole; 13. Fourth drive component; 14. Feeding assembly; 15. Positioning table; 16. Fifth drive component; 17. Connecting part; 18. Connecting rod. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figures 1-16 This invention provides a chip pin insertion device, comprising a processing table 1, a positioning table 15, a feeding assembly 14, a slide table 3, a lifting table 5, a central rod 7, and a rotating component. The slide table 3 is movably mounted on a support 2 on the processing table 1 along the X-axis and is driven to slide by a first driving component 4, preferably a first ball screw. The screw of the first ball screw is arranged along the X-axis and rotatably connected to the support 2, and the nut of the first ball screw is fixedly connected to the slide table 3. The lifting table 5 is movably mounted on the slide table 3 along the Y-axis, and the central rod 7 is fixedly mounted on the lifting table 5. The lifting table 5 is driven to rise and fall by a second driving component 6, preferably a second ball screw. The screw of the second ball screw is arranged along the Y-axis and rotatably connected to the slide table 3, and the nut of the second ball screw is fixedly connected to the lifting table 5.

[0022] The rotating component includes a rotating cylinder 8 and a sliding component. The sliding component is slidably connected to the rotating cylinder 8. The rotating cylinder 8 and the central rod 7 are rotatably connected via a rotary bearing, allowing the sliding component to rotate relative to the central rod 7 via the rotating cylinder 8. In other words, the entire rotating component can rotate relative to the central rod 7. The rotating cylinder 8 is driven to rotate by a third driving component 9, preferably a first cylinder. The cylinder body of the first cylinder is rotatably connected to the lifting platform 5, and the piston rod of the first cylinder is eccentrically rotatably connected to the rotating cylinder 8. The sliding component includes a slide rod 10, a guide rod 11, and multiple pickup units 12 for picking up chips. The guide rod 11 is parallel to the slide rod 10 and fixedly connected via a connector 17. Each pickup unit 12 is distributed along the axial direction of the guide rod 11. The slide rod 10 and the rotating cylinder 8 are slidably connected via a linear bearing, allowing the guide rod 11 and each pickup unit 12 to slide relative to the rotating cylinder 8 via the slide rod 10. In other words, the entire sliding component can slide relative to the rotating cylinder 8. The slide bar 10 is driven to slide by the fourth driving member 13. The fourth driving member 13 is preferably a second cylinder arranged along the X-axis. The cylinder body of the second cylinder is fixedly connected to the rotating cylinder 8 through the connecting rod 18, and the piston rod of the second cylinder is fixedly connected to the slide bar 10. The number of picking units 12 can be set as needed, preferably 5-10, which can pick up multiple chips at a time and insert them one by one onto the PCB, resulting in high chip picking efficiency.

[0023] During the stroke of the rotating component on the central rod 7 via the rotating cylinder 8, each pickup unit 12 can simultaneously have a downward target orientation to pick up the chip. Of course, the rotating component can also rotate each pickup unit 12 away from the target orientation. During the stroke of the sliding component on the rotating cylinder 8 via the sliding rod 10, each pickup unit 12 that has left the target orientation can rotate one by one along the guide rod 11 to the target orientation to insert the chip when passing the central rod 7. This ensures that when the lifting platform 5 moves down to insert the pin, only one pickup unit 12 faces the target orientation. Therefore, when the chip on the pickup unit 12 in the target orientation is inserted into the PCB, the other pickup units 12 will not cause obstruction.

[0024] The feeding assembly 14 is located on one side of the processing table 1 and is used to supply chips in batches. During the movement of the slide table 3 relative to the support 2, it can send each picking unit 12 to the feeding assembly 14 to pick up the chips. The feeding assembly 14 is preferably a material conveyor belt.

[0025] The positioning stage 15 is movable along the Z-axis on the processing table 1 and is driven to slide by the fifth driving member 16. The fifth driving member 16 is preferably a third cylinder arranged along the Z-axis. The cylinder body of the third cylinder is fixedly connected to the processing table 1, and the piston rod of the third cylinder is fixedly connected to the positioning stage 15. In this way, by adjusting the left and right movement of the slide table 3 and the forward and backward movement of the positioning stage 15, the pickup unit 12 at the target position can insert the chip into the preset position on the PCB.

[0026] It should be noted that the X-axis and Z-axis are mutually perpendicular horizontal directions, and the Y-axis is a vertical direction.

[0027] Each pickup unit 12 has an identical structure. Each pickup unit 12 includes a collar 120, a suction cup assembly 121, a trigger assembly, and an elastic element 122. The collar 120 is movably sleeved on the guide rod 11, and the inner diameter of the collar 120 matches the outer diameter of the guide rod 11. The collar 120 has axial and circumferential degrees of freedom on the guide rod 11, meaning that the collar 120 can slide along the axial direction of the guide rod 11 and rotate along the circumferential direction of the guide rod 11. The suction cup assembly 121 is fixedly installed on the collar 120 by bolts. When the pickup unit 12 faces the target, the suction cup assembly 121 faces downwards. The suction cup assembly 121 uses existing technology and will not be described in detail. The trigger assembly includes a trigger rod 123 and a guide groove. The trigger rod 123 is elastically slidably connected to the collar 120 along the radial direction. Specifically, the collar 120 has a radially opening, and the trigger rod 123 slides through the opening. A first compression spring 125 is axially sleeved on the trigger rod 123. One end of the first compression spring 125 abuts against the collar 120, and the other end abuts against the arc-shaped portion 124. A guide groove is formed on the circumferential surface of the guide rod 11. From left to right, the guide groove includes a first straight groove 126, a spiral groove 127, and a second straight groove 128 connected sequentially. Both the first straight groove 126 and the second straight groove 128 are parallel to the axial direction of the guide rod 11. The spiral groove 127 has both an axial span and a circumferential span on the guide rod 11. One end of the spiral groove 127 connects to the first straight groove 126, and the other end connects to the second straight groove 128 (e.g., ...). Figure 9 , Figure 12 One end of the trigger rod 123 is slidably connected to the guide groove, and the other end is provided with an arc-shaped portion 124. An insertion hole 129 is provided radially along the collar 120 at the end of the second straight groove 128 away from the spiral groove 127. The bottom of the trigger rod 123 can be fitted with the insertion hole 129, allowing the trigger rod 123 to be inserted into the insertion hole 129 when aligned. A blocking portion 71 is provided on the center rod 7, which can block the arc-shaped portion 124 and is fitted with it. At least one of the blocking portion 71 and the arc-shaped portion 124 has a wedge surface, allowing the trigger rod 123 to slide and engage with the blocking portion 71 of the center rod 7 via the arc-shaped portion 124. The elastic element 122 is preferably a second compression spring, which is sleeved on the guide rod 11. One end of the second compression spring abuts against the limiting ring on the guide rod 11, and the other end abuts against the collar 120. The elastic force of the second compression spring acts on the collar 120 in the direction of the first straight groove 126.

[0028] During operation, the PCB is fixed to the positioning stage 15, and each pickup unit 12 is positioned at the target location. The first driving component 4 drives the slide 3 to move, and the slide 3 moves each pickup unit 12 to the feeding assembly 14 to pick up the chip (e.g., ...). Figure 11Then, the third drive member 9 drives the rotating member to rotate, causing each pickup unit 12 to rotate away from the target position. The first drive member 4 drives the slide table 3 to move to the positioning table 15. The fourth drive member 13 begins to drive the slide member to move to the left in a step-by-step manner. The arc-shaped part 124 of the first pickup unit 12 on the left contacts the blocking part 71 and is blocked by the blocking part 71 (e.g., Figure 6 As the guide rod 11 continues to move to the left, the trigger rod 123 and collar 120 of the first pickup unit 12 on the left remain stationary with respect to the pickup unit 12. The guide rod 11 and the guide groove move to the left relative to the trigger rod 123, thereby creating a sliding engagement between the guide groove and the trigger rod 123. The first straight groove 126, the spiral groove 127, and the second straight groove 128 of the guide groove sequentially create a sliding engagement with the trigger rod 123 (e.g., Figures 13-15 During the sliding engagement of the spiral groove 127 and the trigger rod 123, the trigger rod 123 undergoes a positional change in the circumferential direction of the guide rod 11, causing the collar 120 and the suction cup assembly 121 to rotate relative to the guide rod 11 (although the arc-shaped portion 124 rotates relative to the blocking portion 71 along the circumferential direction of the guide rod 11, the arc-shaped portion 124 still remains in contact with the blocking portion 71), thereby causing the pickup unit 12 to switch to the target orientation, that is, the suction cup assembly 121 faces downward toward the PCB, and the second compression spring is further compressed to store energy (e.g. Figures 1-3 , Figure 7 ).

[0029] Then the fourth drive unit 13 stops, the first drive unit 4 adjusts the left and right position of the slide 3, and the fifth drive unit 16 adjusts the front and back position of the positioning stage 15 so that the chip on the pickup unit 12 in the target position is aligned with the preset position on the PCB. The second drive unit 6 drives the lifting stage 5 to move down, so that the pickup unit 12 in the target position inserts the chip pins into the PCB.

[0030] Subsequently, the second drive unit 6 drives the lifting platform 5 to move upward and reset, and the fourth drive unit 13 continues to drive the guide rod 11 to move to the left. The guide rod 11 and the guide groove are still relatively opposite to the trigger rod 123 and collar 120 of the pickup unit 12 in the target position, and move to the left until the insertion hole 129 at the right end of the second straight groove 128 is aligned with the bottom end of the trigger rod 123 (e.g., Figure 15 The left-moving guide rod 11 abuts against the trigger rod 123 through the right end wall of the second straight groove 128 and moves to the left together. Under the pressure of the arc-shaped part 124 and the blocking part 71 and the guidance of the wedge surface, the trigger rod 123 slides towards the center of the collar 120, and the bottom end of the trigger rod 123 is inserted into the insertion hole 129 (e.g., Figure 8 , Figure 16The first compression spring 125 is further compressed and stores energy until the blocking part 71 no longer blocks the arc-shaped part 124. The left-moving guide rod 11 can then drive the trigger rod 123 to move to the left and pass over the blocking part 71. At this time, the bottom of the center rod 7 will restrict the movement of the trigger rod 123 in the length direction of the trigger rod 123. After the trigger rod 123 moves to the left and is completely away from directly below the center rod 7, the center rod 7 will no longer block the trigger rod 123 in the length direction of the trigger rod 123. Then the elastic force of the first compression spring 125 is released, allowing the trigger rod 123 to slide relative to the collar 120. As the trigger rod 123 disengages from the socket 129, its bottom end moves upward into the second straight groove 128. After the trigger rod 123 disengages from the socket 129, the elastic force of the second compression spring is released, causing the collar 120 to slide to the left along the guide rod 11. The collar 120 drives the trigger rod 123 to slide in the opposite direction with the guide groove (that is, the trigger rod 123 slides to the left through the second straight groove 128, the spiral groove 127 and the first straight groove 126 in sequence, and the trigger rod 123 finally stops at the left end of the first straight groove 126), causing the collar 120 to rotate in the opposite direction, thereby causing the pickup unit 12 to turn away from the target position.

[0031] Next, the fourth driving component 13 continues to drive the slider to move to the left, causing the second pickup unit 12 on the left to repeat the steps before the first pickup unit 12. The chip on the second pickup unit 12 is then inserted onto the PCB. This continues until all the chips on all pickup units 12 have been inserted. Then, the third driving component 9 drives the rotating component to rotate as a whole until all pickup units 12 are in the target position (e.g., ...). Figure 10 The fourth driving component 13 drives the slider to move to the right, so that each picking unit 12 is on the right side of the center rod 7. Then the first driving component 4 drives the slide table 3 to move to the right so that each picking component can pick up the chip in the next round.

[0032] The foregoing description of certain exemplary embodiments of the present invention should not be construed as limiting the scope of protection of the claims. Those skilled in the art will recognize that the described embodiments can be modified in other ways without departing from the spirit and scope of the invention.

Claims

1. A pin insertion device for chip pins, characterized in that, It includes a slide table, a lifting platform, a central rod, and rotating parts. The lifting platform is vertically movable on the slide table, and the central rod is fixedly installed on the lifting platform. The rotating component includes a rotating cylinder and a sliding component. The rotating cylinder is rotatably connected to the central rod. The sliding component includes a slide rod, a guide rod, and multiple pickup units for picking up chips. The slide rod is slidably connected to the rotating cylinder. The guide rod is parallel to and fixedly connected to the slide rod. Each pickup unit is distributed on the guide rod along the axial direction of the guide rod. During the stroke of the rotating component as the rotating cylinder rotates on the central rod, each pickup unit simultaneously has a downward target orientation to pick up the chip. During the stroke of the sliding component as the sliding rod slides on the rotating cylinder, each pickup unit that has deviated from the target orientation can rotate one by one along the guide rod circumferentially to the target orientation to insert the chip when passing the central rod.

2. The chip pin insertion device according to claim 1, characterized in that, The pickup unit includes a collar, a suction cup assembly, a trigger assembly, and an elastic element. The collar is movably sleeved on the guide rod, and the suction cup assembly is fixedly installed on the collar. The trigger assembly includes a trigger rod that is radially elastically slidably connected to the collar and a guide groove opened on the guide rod. The guide groove includes a first straight groove, a spiral groove, and a second straight groove connected in sequence. The second straight groove has an insertion hole that can accommodate the trigger rod along the radial direction of the collar. One end of the trigger rod is slidably connected to the guide groove, and the other end can slide and abut against the center rod. The elastic force of the elastic element acts on the collar in the direction of the first straight groove.

3. The chip pin insertion device according to claim 2, characterized in that, The trigger rod has an arc-shaped part at the end away from the guide groove, and the center rod has a blocking part that can block the arc-shaped part and is adapted to the arc-shaped part. The blocking part and / or the arc-shaped part have a wedge surface.

4. The chip pin insertion device according to claim 3, characterized in that, The trigger rod is fitted with a first compression spring, one end of which abuts against the collar and the other end against the arc-shaped part.

5. The chip pin insertion device according to claim 2, characterized in that, The elastic element includes a second compression spring, one end of which abuts against a limiting ring on the guide rod, and the other end abuts against a collar.

6. The chip pin insertion device according to claim 1, characterized in that, The slide is horizontally movable on a bracket on the processing table and is driven to slide by a first driving component. The first driving component includes a first ball screw, the screw of the first ball screw is rotatably connected to the bracket, and the nut of the first ball screw is fixedly connected to the slide.

7. The chip pin insertion device according to claim 6, characterized in that, One side of the processing table is equipped with a feeding component for batch supply of chips. As the slide moves on the support, it can deliver each picking unit to the feeding component to pick up the chips.

8. The chip pin insertion device according to claim 1, characterized in that, The lifting platform is driven to move up and down by a second driving component, which includes a second ball screw. The screw of the second ball screw is rotatably connected to the slide, and the nut of the second ball screw is fixedly connected to the lifting platform.

9. The chip pin insertion device according to claim 1, characterized in that, The rotating drum is driven to rotate by a third driving component, which includes a first cylinder. The cylinder body of the first cylinder is rotatably connected to the lifting platform, and the piston rod of the first cylinder is eccentrically rotatably connected to the rotating drum.

10. The chip pin insertion device according to claim 1, characterized in that, The slide bar is driven to slide by a fourth driving component, which includes a second cylinder. The cylinder body of the second cylinder is fixedly connected to the rotating cylinder, and the piston rod of the second cylinder is fixedly connected to the slide bar.

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