A PCB board transfer device in a clamping state

Abstract

This invention discloses a PCB board transfer device in a clamping state, including a clamping assembly and a transfer control assembly. The clamping assembly includes a piston cylinder, a movable plug, a piston disc, a piston plate, a docking sleeve, and a clamping arm. The transfer control assembly includes a magnetic base, a transfer base, a pump for both suction and pressure, and an electromagnetic base. This invention first puts the pump for both suction and pressure into a suction state, creating a negative pressure inside the switching cylinder. With the help of the piston plate and piston disc, the two movable plugs move closer together, controlling the two clamping arms to move closer together, maintaining the PCB board in a clamped state. Then, the pump for both suction and pressure is put into a pressure state, forcing air into the switching cylinder. This causes the switching core to move towards the end where air is reduced, ultimately moving the transfer base to the center of the limiting groove, correcting the position of the robotic arm and the device. This helps avoid repeated clamping of the PCB board and frequent pressure changes during clamping.

Description

Technical Field

[0001] This invention relates to the field of PCB board clamping and transfer technology, and in particular to a PCB board transfer device in a clamped state. Background Technology

[0002] A PCB, or Printed Circuit Board, is a crucial component of the electronics industry. From small electronic watches and calculators to large-scale computers, communication electronic devices, and military weapon systems, any electronic component containing integrated circuits or similar devices requires a PCB for electrical interconnection. A PCB consists of an insulating substrate, connecting wires, and solder pads for mounting and soldering electronic components, serving the dual function of conductive lines and an insulating substrate. It replaces complex wiring, enabling electrical connections between components in a circuit. This not only simplifies the assembly and soldering of electronic products, reducing the amount of wiring work required by traditional methods and significantly alleviating the labor intensity of workers, but also reduces the overall size of the device, lowers product costs, and improves the quality and reliability of electronic equipment.

[0003] In the production process, PCB boards are often transported to designated locations using conveyor belts, and then gripped and placed in the processing area by suction cups or clamps to achieve automated processing. However, in actual production, because PCB boards undergo multiple processes, repeated loading and unloading can easily lead to localized deformation of the PCB board due to repeated pressure on the gripping points, and deviations in the gripping points can cause the PCB board to be repositioned during placement. This is detrimental to the rapid transfer of PCB boards during production, ensuring production efficiency and product qualification rate. Furthermore, a PCB board clamping fixture (publication number CN119176407A) uses a first gripper to position the PCB, while the second gripper is connected to a drive mechanism via a floating mechanism. When the drive mechanism drives the second gripper to move too far, resulting in excessive clamping force, the floating mechanism can provide a certain buffer during clamping, that is, the floating mechanism can absorb clamping force overload, which to some extent reflects the above-mentioned problems. Therefore, how to provide a PCB board transfer device in a clamped state is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] One objective of this invention is to provide a PCB board transfer device in a clamping state to solve the problems that, due to the multiple processes required for PCB boards, repeated pressure on the gripping points during loading and unloading can easily lead to local deformation of the PCB board, and deviation of the gripping points can cause the PCB board to be repositioned during placement, which is not conducive to the rapid transfer of PCB boards during production, thus hindering production efficiency and product qualification rate.

[0005] A PCB board transfer device in a clamping state according to an embodiment of the present invention includes a clamping assembly and a transfer control assembly, wherein the transfer control assembly is assembled to the outside of the clamping assembly; The clamping assembly includes a piston cylinder, with movable plugs movably connected to the interior of both ends of the piston cylinder. A piston disc is integrally formed at one end of the piston cylinder, and piston plates are fixedly disposed on the surface of the piston disc. A docking sleeve is sleeved to the exterior of the movable plug at the end away from the piston cylinder. Two pins are pinned to the interior of the docking sleeve and the movable plug. A clamping arm is integrally formed on the outer wall of the docking sleeve. The transfer control component includes a magnetic base, a transfer base is provided on the top of the magnetic base, a V-shaped connecting pipe is provided on the side of the transfer base, a pump for both suction and pressure is assembled and connected to the top of the transfer base, an electromagnetic base is assembled and connected to the bottom of the transfer base, a slide bar is integrally formed on the bottom surface of the magnetic base, and a movable seat plate is assembled and connected to the bottom of the slide bar. The piston cylinder is in a pressure-holding state, the adapter base is assembled and fixed with the robotic arm, the PCB blank is clamped between two clamping arms, and different robotic arms attract the magnetic base by controlling two different electromagnetic bases to be energized.

[0006] Preferably, both ends of the piston cylinder are internally threaded with piston caps, and a piston ring is provided inside one end of the piston cap extending into the piston cylinder. A C-shaped retaining ring is snap-fitted into the side of the piston cap near the center of the piston cylinder. The movable plug is movably connected inside the C-shaped retaining ring and the piston cap, and the movable plug is slidably connected inside the piston ring.

[0007] Preferably, two exhaust branches are welded to the outer wall of the middle portion of the piston cylinder, a switching cylinder is provided at the top of the piston cylinder, two intake branches are welded to the outer wall of the middle portion of the switching cylinder, the two intake branches and the two exhaust branches are arranged opposite each other and are all connected to each other by a one-way valve, a switching core is slidably connected inside the switching cylinder, and cylinder covers are assembled and connected to the inside of both ends of the switching cylinder; two suction pipe heads are threadedly connected inside the switching core, a limiting groove is opened at the top of the switching cylinder, and a venting groove is opened inside the inside of both ends of the switching core; the two suction pipe heads are slidably connected inside the limiting groove, and one end of the V-shaped connecting pipe is fastened to the top of one suction pipe head.

[0008] Preferably, the top and bottom of the movable seat plate are provided with transverse strips, and the sides of both ends of the two transverse strips are formed with upright plates. The transverse strip at the top is provided with a guide groove. The four corners of the bottom of the movable seat plate are assembled and connected with first pulleys. The slide bar is slidably connected to the inside of the guide groove, and the first pulley is tumbledly connected to the top surface of the transverse strip at the bottom.

[0009] Preferably, a storage groove is provided inside each of the four corners of the top of the movable seat plate. A first spring is provided inside the storage groove, and a rib is slidably connected inside the storage groove. A second pulley is assembled and connected to the top of the rib. The first spring is supported between the rib and the bottom inner wall of the storage groove, and the second pulley is slidably connected to the bottom surface of the horizontal strip at the top.

[0010] Preferably, both ends of the top of the magnetic base are provided with positioning grooves, the cross-section of the positioning grooves is an isosceles trapezoid, and the bottom of the electromagnetic base is adapted to be connected to the inside of the positioning grooves.

[0011] Preferably, a limiting stand is assembled and connected to one side of each of the two upright plates, and a limiting sleeve is welded to the bottom of the limiting stand. The limiting sleeve has an adapter groove inside. The limiting sleeve is sleeved on the outside of the docking sleeve, the clamping arm is inserted into the inside of the adapter groove, and the top of the limiting stand is sleeved on the inside of one end of the switching cylinder.

[0012] Preferably, both of the one-way valves include a valve seat, and the valve seat has a sealing ball inside that blocks its bottom passage. The top of the sealing ball is provided with a third spring, and a limiting sleeve is sleeved on the outer side of the top of the third spring. The top of the limiting sleeve is integrally formed with a threaded sleeve, and the threaded sleeve has a vent groove inside. The threaded sleeve is threadedly connected to the inside of the valve seat, the top of the valve seat is inserted into the inside of the air inlet branch pipe, and the bottom of the valve seat is inserted into the inside of the air outlet branch pipe.

[0013] Preferably, an overpressure protection component is provided in the middle of the inner side of the piston cylinder, a venting groove is provided at the top of the piston cylinder, and a venting riser is integrally formed on the outer wall of the top of the piston cylinder; the overpressure protection component includes a sealing rod, a supporting short rod is slidably connected inside the sealing rod, an auxiliary washer is sleeved at the bottom of the supporting short rod, and a second spring is provided between the top of the supporting short rod and the inside of the sealing rod; the top of the sealing rod seals the bottom of the venting groove, the supporting short rod is threaded to the inner wall of the bottom of the piston cylinder, and the bottom surface of the auxiliary washer is adapted to the inner wall of the bottom of the piston cylinder.

[0014] Preferably, the support rod has a groove inside, and the bottom of the sealing rod is pin-connected to a limiting rod, which is movably connected inside the groove.

[0015] The beneficial effects of this invention are: I. This invention first puts the dual-purpose pump for suction and pressure into suction mode, creating a negative pressure inside the switching cylinder. Gas inside the piston cylinder enters the switching cylinder through a one-way valve. As the piston plate and piston disc move the two movable plugs closer together, the two clamping arms move closer together to keep the PCB blank in a clamped state. Then, the dual-purpose pump for suction and pressure is put into pressure mode, allowing air to be forced into the switching cylinder through the V-shaped connecting pipe and the suction pipe head, creating a pressurized state inside the switching cylinder. This causes the switching core to move towards the end where air is reduced inside the switching cylinder, ultimately moving the suction pipe head and the V-shaped connecting pipe to the center of the limiting groove. The adapter base connected to the robotic arm is located on one side of the center of the switching cylinder, ensuring that different robotic arms dock with the device at the same position via the electromagnetic base at the bottom of the adapter base. This helps to avoid repeated clamping of the PCB blank and frequent changes in pressure during clamping. Second, the present invention uses the first pulleys at the four corners of the bottom of the movable seat plate to roll on the surface of the bottom horizontal strip, and the second pulleys at the four corners of the top of the movable seat plate to roll on the surface of the top horizontal strip, which can assist the transfer base connected to the robotic arm to move towards the center of the switching cylinder, thereby reducing the resistance encountered by the switching cylinder relative to the switching core column when it moves. Third, this invention utilizes a second spring to support the sealing rod and the support rod during the continuous pumping operation of the dual-purpose pump. This keeps the sealing rod blocking the bottom of the venting groove. When the pressure inside the piston cylinder is about to exceed the pressure that the PCB blank can withstand, the air outside the piston cylinder overcomes the resistance of the second spring and pushes the sealing rod to move outside the support rod, guiding the external air into the interior of the piston cylinder. This helps prevent the negative pressure inside the piston cylinder from exceeding the limit, thus providing overpressure protection for the PCB blank. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is one of the structural schematic diagrams of a PCB board transfer device in a clamping state proposed in this invention; Figure 2 This is the second schematic diagram of a PCB board transfer device in a clamping state proposed in this invention; Figure 3 This is a cross-sectional view of the piston cylinder and switching cylinder of a PCB board transfer device in a clamping state, as proposed in this invention. Figure 4 This invention proposes a PCB board transfer device in a clamping state. Figure 3 Enlarged diagram of section B in the middle; Figure 5 This is a schematic diagram of the structure of a PCB board transfer device in a clamping state, in which the piston cylinder and switching cylinder are disconnected. Figure 6 This is an exploded schematic diagram of a one-way valve of a PCB board transfer device in a clamping state, as proposed in this invention. Figure 7 This is a schematic diagram of the overvoltage protection component of a PCB board transfer device in a clamping state, as proposed in this invention. Figure 8 This is a schematic diagram of the transfer control component of a PCB board transfer device in a clamping state, as proposed in this invention. Figure 9 This invention proposes a PCB board transfer device in a clamping state. Figure 1 Enlarged diagram of section A in the middle; Figure 10 This is a cross-sectional view of the movable seat plate of a PCB board transfer device in a clamping state, as proposed in this invention.

[0017] In the picture: 1. Clamping assembly; 101. Clamping arm; 102. Docking sleeve; 103. Movable plug; 104. Piston cylinder; 105. Outlet branch pipe; 106. Switching cylinder; 107. Inlet branch pipe; 108. Switching core; 109. Cylinder cover; 110. Suction pipe head; 111. Piston ring; 112. C-shaped retaining ring; 113. Piston plate; 114. Piston disc; 115. Pin rod; 116. Piston cap; 2. PCB blank; 3. Transfer control assembly; 301. Limiting sleeve; 302. Horizontal strip; 303. Limiting stand; 304. Stand plate; 305. Magnetic base; 306. Movable base plate; 307. First pulley; 308. Second pulley; 309. Sliding bar; 310. Rib; 311. First spring; 4. Adapter base; 5. Dual-purpose pump for pumping and depressurizing air; 6. V-shaped connecting pipe; 7. Electromagnetic base; 8. Overpressure protection assembly; 801. Sealing rod; 802. Second spring; 803. Limiting rod; 804. Support rod; 805. Auxiliary washer; 9. Check valve; 901. Limit sleeve; 902. Valve seat; 903. Threaded sleeve; 904. Third spring; 905. Sealing ball; 10. Ventilation groove; 11. Limiting groove; 12. Ventilation groove; 13. Vent groove; 14. Vent riser; 15. Strip groove; 16. Adaptor groove; 17. Guide groove; 18. Storage groove; 19. Positioning groove. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0019] Example 1: The technical solution in this application is to address the problems mentioned above, such as the PCB board undergoing multiple processes and repeated loading and unloading, which can easily lead to local deformation of the PCB board due to repeated pressure on the gripping points, and the need for repositioning of the PCB board during placement due to gripping point deviation. These issues hinder the rapid transfer of the PCB board during production, thus affecting production efficiency and product qualification rate. The overall approach is as follows: To address the problems existing in the prior art, the present invention provides a schematic diagram of a PCB board transfer device in a clamping state, as shown in the reference diagram. Figures 1 to 3 , Figure 5 , Figures 8 to 10 As shown, the clamping assembly 1 and the external transfer control assembly 3 are assembled to the clamping assembly 1. The clamping assembly 1 includes a piston cylinder 104. Both ends of the piston cylinder 104 are movably connected to movable plugs 103. The movable plug 103 is located at one end of the piston cylinder 104 and is integrally formed with a piston disc 114. A piston plate 113 is fixedly provided on the surface of the piston disc 114. The movable plug 103 is externally connected to a docking sleeve 102 at the end away from the piston cylinder 104. The docking sleeve 102 and the movable plug 103 are connected to two pins 115. The outer wall of the docking sleeve 102 is integrally formed with a clamping arm 101. Two exhaust branches 105 are welded to the outer wall of the middle part of the piston cylinder 104. A switching cylinder 106 is provided at the top of the piston cylinder 104. Two intake branches 107 are welded to the outer wall of the middle part of the switching cylinder 106. The two intake branches 107 and the two exhaust branches 105 are arranged opposite each other and are all connected to each other by a one-way valve 9. In this process, by making the inside of the piston cylinder 104 a negative pressure state, the atmospheric pressure outside the piston cylinder 104 squeezes the piston disc 114 and piston plate 113 from one end of the piston cylinder 104 toward the center, thereby driving the clamping arms 101 at one end of the two movable plugs 103 to move closer to each other, thereby clamping and fixing the PCB blank board 2 and keeping the inside of the piston cylinder 104 in a pressure-holding state. Secondly, to ensure the piston disc 114 and piston plate 113 remain stable during their movement within the piston cylinder 104, and to prevent the piston disc 114 from tilting inside the piston cylinder 104 due to its relatively thin overall thickness and the gap between it and the inner wall of the piston cylinder 104, such as... Figure 3As shown, piston caps 116 are threadedly connected to both ends of piston cylinder 104. A piston ring 111 is provided inside one end of piston cap 116 extending into piston cylinder 104. A C-shaped retaining ring 112 is snap-fitted to the side of piston cap 116 near the center of piston cylinder 104. The movable plug 103 is movably connected to the inside of C-shaped retaining ring 112 and piston cap 116. When the inside of piston cylinder 104 is under negative pressure, the two piston plates 113 drive the piston discs 114 at the corresponding positions to move closer to each other, so that the movable plug 103 is slidably connected to the inside of piston ring 111. Furthermore, to ensure that the transfer base 4 remains centered on the switching cylinder 106 when the electromagnetic base 7 carried by the two robotic arms is attracted and connected to the magnetic base 305, and to ensure that the relative position between the PCB blank 2 and the transfer base 4 remains unchanged during the transfer process while the PCB blank 2 is held in the clamped state, such as... Figure 2 and Figure 5 As shown, the switching cylinder 106 is internally slidably connected to a switching core column 108, and both ends of the switching cylinder 106 are internally assembled with cylinder covers 109; the switching core column 108 is internally threadedly connected to two suction pipe heads 110, the top of the switching cylinder 106 is provided with a limiting groove 11, and both ends of the switching core column 108 are internally provided with ventilation grooves 10. One end of the V-shaped connecting pipe 6 is fastened to the top of one suction pipe head 110. When the switching cylinder 106 is in a negative pressure state by using the dual-purpose pump 5, the adapter base 4 and the V-shaped connecting pipe 6, the gas inside the piston cylinder 104 passes through the one-way valve 9 and enters the switching cylinder 106. Thus, with the help of the piston plate 113, the piston disc 114, the movable plug 103 and the docking sleeve 102, the two clamping arms 101 are brought close to each other to keep the PCB blank board 2 in a clamped state. Meanwhile, both suction pipe heads 110 are slidably connected inside the limiting groove 11. When the PCB blank board 2 is held by the two clamping arms 101, the internal of the switching cylinder 106 is pressurized by the dual-purpose pump 5, the adapter base 4 and the V-shaped connecting pipe 6. The switching core 108 moves inside the switching cylinder 106 towards the end where the air is reduced, so that the suction pipe head 110 with the V-shaped connecting pipe 6 connected to the top moves to the center of the limiting groove 11. This keeps the adapter base 4 located on one side of the center of the switching cylinder 106. When transferring the PCB blank board 2 in the clamping state, it is beneficial to ensure that the final docking position of the robotic arm is the same. Furthermore, to prevent the movable plug 103 from rotating relative to the piston cylinder 104 along its axis during the process of the two clamping arms 101 clamping the PCB blank 2, such as... Figure 2 and Figure 8As shown, a limiting stand 303 is assembled and connected to one side of each of the two upright plates 304. A limiting sleeve 301 is welded to the bottom of the limiting stand 303. An adapter groove 16 is provided inside the limiting sleeve 301. By fitting the limiting sleeve 301 to the outside of the docking sleeve 102, inserting the clamping arm 101 into the inside of the adapter groove 16, and fitting the top of the limiting stand 303 to the inside of one end of the switching cylinder 106, the PCB blank 2 in the clamping state of the clamping arm 101 can be prevented from moving relative to the piston cylinder 104, which would affect the robotic arm's control of the device to transfer the PCB blank 2. The transfer control component 3 includes a magnetic base 305, a transfer base 4 is provided on the top of the magnetic base 305, a V-shaped connecting pipe 6 is provided on the side of the transfer base 4, a pump 5 for both suction and pressure is assembled and connected to the top of the transfer base 4, an electromagnetic base 7 is assembled and connected to the bottom of the transfer base 4, a slide bar 309 is integrally formed on the bottom surface of the magnetic base 305, and a movable seat plate 306 is assembled and connected to the bottom of the slide bar 309. In this process, the PCB blank 2 is clamped between two clamping arms 101, and the adapter base 4 is assembled and fixed with the robotic arm. When different robotic arms are independently equipped with adapter base 4, which is equipped with a dual-purpose pump 5 for vacuuming and pressurizing and an electromagnetic base 7, two different electromagnetic bases 7 can be energized at the same time to form an electromagnet that attracts the magnetic base 305. Finally, the robotic arm is connected to the transfer control component 3, which makes it easy to control the PCB blank 2 fixed by the clamping component 1 to move in various working areas. It is also easy to disconnect the adapter base 4 and the magnetic base 305 by de-energizing the electromagnetic base 7. Meanwhile, in order to guide the electromagnetic base 7 to attract the magnetic base 305 and improve the connection efficiency, such as Figure 10 As shown, both ends of the top of the magnetic base 305 are provided with positioning grooves 19. The cross-section of the positioning groove 19 is an isosceles trapezoid. By adapting the bottom of the electromagnetic base 7 to the inside of the positioning groove 19, when the electromagnetic base 7 is powered on and the transfer base 4 is controlled by the robotic arm to place the electromagnetic base 7 on the top of the magnetic base 305, the positioning groove 19 can be used to guide the electromagnetic base 7 to quickly connect with the magnetic base 305. Secondly, in order to connect the V-shaped connecting pipe 6 to the suction pipe head 110, the switching core 108 moves inside the switching cylinder 106, and the electromagnetic base 7 moves smoothly relative to the switching cylinder 106 after being connected to the magnetic suction base 305. Figure 2 , Figure 8 and Figure 10As shown, the top and bottom of the movable seat plate 306 are provided with horizontal strips 302. The sides of both ends of the two horizontal strips 302 are formed with vertical plates 304. The horizontal strip 302 at the top is provided with a guide groove 17. The four corners of the bottom of the movable seat plate 306 are equipped with first pulleys 307. By sliding the slide bar 309 in the guide groove 17 and rolling it with the first pulleys 307 to the top surface of the horizontal strip 302 at the bottom, the frictional resistance between the movable seat plate 306 and the two horizontal strips 302 is reduced. When the switching core 108 slides inside the switching cylinder 106, the V-shaped connecting pipe 6 connected to the air extraction pipe head 110 drives the transfer base 4 to move smoothly on one side of the switching cylinder 106. Meanwhile, in order for the robotic arm to control the device's multi-pose movements and to prevent the movable base plate 306 from moving between the two transverse strips 302, such as... Figure 10 As shown, the four corners of the top of the movable seat plate 306 are provided with storage slots 18. A first spring 311 is provided inside the storage slot 18. A rib rod 310 is slidably connected inside the storage slot 18. A second pulley 308 is assembled and connected to the top of the rib rod 310. By supporting the first spring 311 between the rib rod 310 and the bottom inner wall of the storage slot 18, and rolling the second pulley 308 at the bottom surface of the top horizontal strip 302, the smoothness of the movable seat plate 306 between the two horizontal strips 302 is not affected, and the movable seat plate 306 is prevented from moving along the direction perpendicular to the guide groove 17 between the two horizontal strips 302.

[0020] In this embodiment, the robotic arm equipped with the adapter base 4 places the electromagnetic base 7 at the bottom of the adapter base 4 on the top of the magnetic suction base 305, and the V-shaped connecting tube 6 on the adapter base 4 is fastened to the top of a suction tube head 110. When the dual-purpose pump 5 for pumping and pressurizing is in the pumping state, and the inside of the switching cylinder 106 is in a negative pressure state, the gas inside the piston cylinder 104 passes through the one-way valve 9 and enters the inside of the switching cylinder 106. Thus, the piston plate 113 and piston disc 114 drive the two movable plugs 103 to move closer to each other. Finally, the two docking sleeves 102 drive the two clamping arms 101 to move closer to each other to keep the PCB blank board 2 in a clamped state. Meanwhile, while the PCB blank 2 is being held by the two clamping arms 101, the dual-purpose pump 5 is in a compressed air state, and air is forced into the interior of the switching cylinder 106 through the V-shaped connecting pipe 6 and the air extraction head 110, so that the interior of the switching cylinder 106 is in a pressurized state. At this time, the switching core column 108 moves towards the end where the air is reduced inside the switching cylinder 106, thereby driving the air extraction head 110 and the V-shaped connecting pipe 6 to move to the center of the limiting groove 11. Finally, it drives the adapter base 4 connected to the robotic arm (in general, the robotic arm is used as a stationary reference, and the movement of related components needs to be adjusted and understood, such as the switching cylinder 106 moving outside the switching core column 108, while here the clamped PCB blank 2 is in a stationary state as a reference) to move towards one side of the center of the switching cylinder 106. This ensures that the final docking position of the robotic arm is the same when transferring the PCB blank 2 in the clamped state. Furthermore, when the switching core 108 moves towards the end where air is reduced inside the switching cylinder 106, thereby driving the air extraction head 110 and the V-shaped connecting pipe 6 to the center of the limiting groove 11, the first pulleys 307 at the four corners of the bottom of the movable seat plate 306 roll on the surface of the bottom horizontal strip 302, and the second pulleys 308 at the four corners of the top of the movable seat plate 306 roll on the surface of the top horizontal strip 302. This helps the transfer base 4 connected to the robotic arm to move towards the center of the switching cylinder 106, that is, to correct the transfer base 4 to be on the center of the switching cylinder 106.

[0021] Example 2: Based on Example 1, this application describes the pressure change control between the piston cylinder 104 and the switching cylinder 106 when the piston cylinder 104 supports the two clamping arms 101 to clamp the PCB blank board 2 under negative pressure support. The general idea is as follows: like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, both one-way valves 9 include valve seats 902. The valve seats 902 are provided with a sealing ball 905 that blocks the bottom passage. The top of the sealing ball 905 is provided with a third spring 904. The outer side of the top of the third spring 904 is sleeved with a limit sleeve 901. The top of the limit sleeve 901 is integrally formed with a threaded sleeve 903. The threaded sleeve 903 has a vent groove 12 inside. An overpressure protection component 8 is provided in the middle of the inner side of the piston cylinder 104. A venting groove 13 is provided on the top of the piston cylinder 104. A venting riser 14 is integrally formed on the outer wall of the top of the piston cylinder 104. The overpressure protection component 8 includes a sealing rod 801. A support short rod 804 is slidably connected inside the sealing rod 801. An auxiliary washer 805 is sleeved on the bottom of the support short rod 804. A second spring 802 is provided between the top of the support short rod 804 and the inside of the sealing rod 801. In this configuration, by threading the threaded sleeve 903 into the interior of the valve seat 902, with the top of the valve seat 902 inserted into the interior of the intake branch pipe 107 and the bottom of the valve seat 902 inserted into the interior of the outlet branch pipe 105, when the one-way valve 9 is assembled between the intake branch pipe 107 and the outlet branch pipe 105, it can support the air inside the piston cylinder 104 to flow only into the interior of the switching cylinder 106, and prevent it from entering the interior of the piston cylinder 104 from the interior of the switching cylinder 106. Secondly, by sealing the bottom of the venting groove 13 with the top of the sealing rod 801, and connecting the support rod 804 threaded to the bottom inner wall of the piston cylinder 104, the bottom surface of the auxiliary washer 805 is adapted to the bottom inner wall of the piston cylinder 104. When the dual-purpose pump 5 is in the pumping state, the inside of the switching cylinder 106 is in a negative pressure state. The gas inside the piston cylinder 104 enters the switching cylinder 106 through the one-way valve 9, and drives the two movable plugs 103 to move closer to each other with the help of the piston plate 113 and piston disc 114, thereby using the two mating sleeves 102 to drive the two When the clamping arms 101 are close to each other to keep the PCB blank 2 clamped, if the dual-purpose pump 5 continuously pumps air, and the pressure inside the piston cylinder 104 is about to exceed the pressure that the PCB blank 2 can bear, the air outside the piston cylinder 104 overcomes the resistance of the second spring 802 and pushes the sealing rod 801 to move outside the support rod 804, releasing the top of the sealing rod 801 from the bottom of the venting groove 13, and guiding the external air into the interior of the piston cylinder 104. This helps to prevent the negative pressure inside the piston cylinder 104 from exceeding the limit and plays a role in protecting the PCB blank 2. Meanwhile, to prevent the support rod 804 from detaching from the sealing rod 801, and to ensure that the sealing rod 801 and the support rod 804 are always connected, such as... Figure 7 As shown, a strip groove 15 is provided inside the support rod 804. The bottom of the sealing rod 801 is pin-connected to a limiting rod 803. By movably connecting the limiting rod 803 inside the strip groove 15, the limiting rod 803 and the strip groove 15 cooperate to restrict the support rod 804 from detaching from the inside of the sealing rod 801, which facilitates the installation of the overpressure protection assembly 8 into the inside of the piston cylinder 104.

[0022] In this embodiment, by setting two one-way valves 9 between the switching cylinder 106 and the piston cylinder 104, when the dual-purpose pump 5 is in the pumping state, the inside of the switching cylinder 106 is in a negative pressure state, and the gas inside the piston cylinder 104 enters the inside of the switching cylinder 106 through the one-way valves 9. With the help of the piston plate 113 and the piston disc 114, the two movable plugs 103 move closer to each other. Thus, when the two mating sleeves 102 move the two clamping arms 101 closer to each other to keep the PCB blank board 2 clamped, the air inside the piston cylinder 104 only flows into the inside of the switching cylinder 106 and cannot enter the inside of the piston cylinder 104 from the inside of the switching cylinder 106. Meanwhile, during the continuous pumping operation of the dual-purpose pump 5, the second spring 802 supports the sealing rod 801 and the support rod 804, keeping the sealing rod 801 in a state of sealing the bottom of the venting groove 13. When the pressure inside the piston cylinder 104 is about to exceed the pressure that the PCB blank 2 can bear, the air outside the piston cylinder 104 overcomes the resistance of the second spring 802, pushing the sealing rod 801 to move outside the support rod 804, guiding the external air into the interior of the piston cylinder 104. This helps prevent the negative pressure inside the piston cylinder 104 from exceeding the limit, ultimately achieving the effect of overpressure protection and avoiding damage to the PCB blank 2.

[0023] Specifically, when using this device to perform operations: First, the first robotic arm powers the electromagnetic base 7 on it, so that the electromagnetic base 7 is guided by the positioning groove 19 on the top of the magnetic base 305 to be attracted and connected to the magnetic base 305, and the device is always connected to a robotic arm. Then, the second robotic arm places the electromagnetic base 7 at the bottom of the adapter base 4 on top of the magnetic suction base 305, and makes one end of the V-shaped connecting tube 6 on the adapter base 4 fasten to the top of a suction tube head 110. At the same time, it controls the suction and pressure pump 5 to be in the suction state, so that the inside of the switching cylinder 106 is in a negative pressure state, and the gas inside the piston cylinder 104 passes through the one-way valve 9 and enters the inside of the switching cylinder 106. Thus, with the help of the piston plate 113 and the piston disc 114, the two movable plugs 103 are driven to move closer to each other. Finally, the two docking sleeves 102 are used to drive the two clamping arms 101 to move closer to each other to keep the PCB blank board 2 in a clamped state. During this process, the electromagnetic base 7 on the first robotic arm is de-energized, so that the first robotic arm is disconnected from the device. Meanwhile, the second spring 802 is used to support the sealing rod 801 and the support short rod 804, so that the sealing rod 801 keeps the bottom of the venting groove 13 sealed. When the pressure inside the piston cylinder 104 is about to exceed the pressure that the PCB blank board 2 can bear, the air outside the piston cylinder 104 overcomes the resistance of the second spring 802 and pushes the sealing rod 801 to move outside the support short rod 804, guiding the external air into the interior of the piston cylinder 104 and limiting the negative pressure inside the piston cylinder 104 to exceed the limit value that would damage the PCB blank board 2. Next, the dual-purpose pump 5 is put into a compressed air state, and air is forced into the switching cylinder 106 through the V-shaped connecting pipe 6 and the air extraction head 110, so that the inside of the switching cylinder 106 is pressurized. The switching core 108 moves inside the switching cylinder 106 towards the end where the air is reduced, so as to drive the air extraction head 110 and the V-shaped connecting pipe 6 to the center of the limiting groove 11. With the help of the first pulleys 307 at the four corners of the bottom of the movable base plate 306 rolling on the surface of the bottom horizontal strip 302, and the second pulleys 308 at the four corners of the top of the movable base plate 306 rolling on the surface of the top horizontal strip 302, the magnetic suction seat 305 is supported to move relative to the horizontal strip 302, thereby driving the transfer base 4 connected to the robotic arm to move towards the center of the switching cylinder 106. Finally, when transferring the PCB blank board 2 in the clamping state, the second robotic arm and the first robotic arm are docked at the same position through the electromagnetic base 7.

[0024] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A PCB board transfer device in a clamping state, characterized in that, include: Clamping component (1); The transfer control component (3) is assembled to the outside of the clamping component (1); The clamping assembly (1) includes a piston cylinder (104), with movable plugs (103) movably connected to the interior of both ends of the piston cylinder (104). The movable plug (103) is integrally formed with a piston disc (114) at one end of the piston cylinder (104). A piston plate (113) is fixedly provided on the surface of the piston disc (114). A docking sleeve (102) is sleeved to the exterior of the movable plug (103) away from the piston cylinder (104). Two pins (115) are pinned together inside the docking sleeve (102) and the movable plug (103). A clamping arm (101) is integrally formed on the outer wall of the docking sleeve (102). The transfer control component (3) includes a magnetic base (305), a transfer base (4) is provided on the top of the magnetic base (305), a V-shaped connecting pipe (6) is provided on the side of the transfer base (4), a pump (5) for pumping and depressurizing is assembled and connected to the top of the transfer base (4), an electromagnetic base (7) is assembled and connected to the bottom of the transfer base (4), a slide bar (309) is integrally formed on the bottom surface of the magnetic base (305), and a movable seat plate (306) is assembled and connected to the bottom of the slide bar (309). The piston cylinder (104) is in a pressure-holding state, the adapter base (4) is assembled and fixed with the robotic arm, the PCB blank (2) is clamped between two clamping arms (101), and different robotic arms are attracted to the magnetic base (305) by controlling two different electromagnetic bases (7) to be energized.

2. The PCB board transfer device in a clamping state according to claim 1, characterized in that, Both ends of the piston cylinder (104) are threadedly connected to piston caps (116). A piston ring (111) is provided inside the piston cap (116) extending into one end of the piston cylinder (104). A C-shaped retaining ring (112) is snap-fitted to the side of the piston cap (116) near the center of the piston cylinder (104). The movable plug (103) is movably connected inside the C-shaped retaining ring (112) and the piston cover (116), and the movable plug (103) is slidably connected inside the piston ring (111).

3. The PCB board transfer device in a clamping state according to claim 1, characterized in that, Two outlet branch pipes (105) are welded to the outer wall of the middle part of the piston cylinder (104). A switching cylinder (106) is provided at the top of the piston cylinder (104). Two inlet branch pipes (107) are welded to the outer wall of the middle part of the switching cylinder (106). The two inlet branch pipes (107) and the two outlet branch pipes (105) are arranged opposite each other and are all connected to each other by a one-way valve (9). A switching core column (108) is slidably connected inside the switching cylinder (106). Cylinder caps (109) are assembled and connected to the inside of both ends of the switching cylinder (106). The switching core (108) has two internal threaded connections to air extraction pipes (110), the top of the switching cylinder (106) has a limiting groove (11), and both ends of the switching core (108) have ventilation grooves (10). Both of the suction pipe heads (110) are slidably connected inside the limiting groove (11), and one end of the V-shaped connecting pipe (6) is fastened to the top of one suction pipe head (110).

4. The PCB board transfer device in a clamping state according to claim 3, characterized in that, The movable seat plate (306) is provided with horizontal strips (302) at both the top and bottom. The two horizontal strips (302) are formed with vertical plates (304) at both ends. The horizontal strip (302) at the top is provided with guide grooves (17). The four corners of the bottom of the movable seat plate (306) are all fitted with first pulleys (307). The slide bar (309) is slidably connected inside the guide bar groove (17), and the first pulley (307) is slidably connected to the top surface of the horizontal bar (302) located at the bottom.

5. A PCB board transfer device in a clamping state according to claim 4, characterized in that, The four corners of the top of the movable seat plate (306) are provided with storage slots (18). A first spring (311) is provided inside the storage slot (18). A rib rod (310) is slidably connected inside the storage slot (18). A second pulley (308) is assembled and connected to the top of the rib rod (310). The first spring (311) is supported between the bottom inner wall of the rib (310) and the storage groove (18), and the second pulley (308) is rolled to the bottom surface of the horizontal strip (302) located at the top.

6. A PCB board transfer device in a clamping state according to claim 1, characterized in that, The magnetic base (305) has positioning grooves (19) at both ends of its top. The cross-section of the positioning groove (19) is an isosceles trapezoid. The bottom of the electromagnetic base (7) is adapted to be connected to the inside of the positioning groove (19).

7. A PCB board transfer device in a clamping state according to claim 4, characterized in that, One side of each of the two upright plates (304) is fitted with a limiting stand (303), and the bottom of the limiting stand (303) is welded with a limiting sleeve (301). The limiting sleeve (301) has an adapter groove (16) inside. The limiting sleeve (301) is sleeved on the outside of the docking sleeve (102), the clamping arm (101) is inserted into the inside of the adapter groove (16), and the top of the limiting stand (303) is sleeved on the inside of one end of the switching cylinder (106).

8. A PCB board transfer device in a clamping state according to claim 3, characterized in that, Both of the one-way valves (9) include a valve seat (902), and a sealing ball (905) is provided inside the valve seat (902) to block its bottom passage. A third spring (904) is provided on the top of the sealing ball (905). A limiting sleeve (901) is sleeved on the outer side of the top of the third spring (904). A threaded sleeve (903) is integrally formed on the top of the limiting sleeve (901). A venting groove (12) is provided inside the threaded sleeve (903). The threaded sleeve (903) is threadedly connected to the inside of the valve seat (902), the top of the valve seat (902) is inserted into the inside of the air inlet branch pipe (107), and the bottom of the valve seat (902) is inserted into the inside of the air outlet branch pipe (105).

9. A PCB board transfer device in a clamping state according to claim 3, characterized in that, An overpressure protection component (8) is provided in the middle of the inner side of the piston cylinder (104), a venting groove (13) is provided on the top of the piston cylinder (104), and a venting riser (14) is integrally formed on the outer wall of the top of the piston cylinder (104). The overpressure protection assembly (8) includes a blocking rod (801), a supporting short rod (804) is slidably connected inside the blocking rod (801), an auxiliary washer (805) is sleeved on the bottom of the supporting short rod (804), and a second spring (802) is provided between the top of the supporting short rod (804) and the inside of the blocking rod (801). The top of the sealing rod (801) seals the bottom of the venting groove (13), the support rod (804) is threaded to the bottom inner wall of the piston cylinder (104), and the bottom surface of the auxiliary washer (805) is adapted to the bottom inner wall of the piston cylinder (104).

10. A PCB board transfer device in a clamping state according to claim 9, characterized in that, The support rod (804) has a strip groove (15) inside, and the bottom of the sealing rod (801) is pin-connected to a limiting rod (803), which is movably connected inside the strip groove (15).

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