A PCB board automatic feeding and receiving machine

Abstract

The present invention discloses an automatic feeding and receiving machine for PCB boards, belonging to the field of PCB board conveying. The machine comprises a feeding device, a processing device, and a unloading device; a fixture for mounting PCB boards; the fixture comprises a support plate, a transmission member, multiple groups of first clamps, and multiple groups of second clamps; the first clamps and the second clamps are both mounted on the support plate and form a receiving area for accommodating the PCB boards; the first clamps move along a preset motion trajectory to at least a first displacement position close to the PCB board and a second displacement position away from the PCB board; the transmission member is used to drive the first clamps to the first displacement position to lock the PCB board when the suction cup assembly releases the PCB board. The machine can secure PCB boards of different sizes, increasing versatility.

Description

Technical Field

[0001] The present invention relates to the field of PCB board conveying, and more particularly to an automatic PCB board feeding and receiving integrated machine. Background Art

[0002] PCB board is also called circuit board, which is used to miniaturize and visualize circuits, and plays an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. printed circuit boards or printed circuit boards It has the characteristics of high wiring density, light weight, thin thickness, good bending properties, and a rigid-flexible board.

[0003] Automatic feeding and receiving of PCBs is achieved by mounting the PCBs on a fixture. The fixture is provided with a structure for securing the PCBs, thereby enabling the PCBs to be mounted and supported. However, the structure for securing the PCBs on the fixture can only secure PCBs of a specific size and is difficult to secure PCBs of different sizes, resulting in poor versatility. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to provide an automatic PCB board feeding and receiving integrated machine, which can fix PCB boards of different sizes and increase versatility.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A PCB board automatic feeding and receiving integrated machine includes a loading device, a processing device and a unloading device; it is characterized in that it also includes a fixture for mounting the PCB board; the loading device includes: a mounting assembly for mounting the PCB board on the fixture and a feeding assembly for transporting the fixture mounted with the PCB board to the processing device for processing; the fixture includes: a support plate, a transmission member, multiple groups of first clamps and multiple groups of second clamps; the first clamps and the second clamps are both mounted on the support plate and form a accommodating area for accommodating the PCB board; the first clamp moves along a preset motion trajectory to at least a first displacement position close to the PCB board and a second displacement position away from the PCB board; the mounting assembly includes: a robotic arm, a suction cup assembly and a control member; the robotic arm is used to move the suction cup assembly and the control member close to or away from the installation area, the suction cup assembly is used to suck and release the PCB board; the control member is used to control the first clamp to move to the second displacement position when the suction cup assembly sucks the PCB board and moves close to the installation area; the transmission member is used to drive the first clamp to move to the first displacement position to lock the PCB board when the suction cup assembly releases the PCB board.

[0007] By automatically placing PCBs on a fixture, and then using the fixture to transport multiple PCBs to a processing device for processing, the processing speed is increased and the time the PCBs are transported is greatly reduced. In addition, the method of installing the PCBs on the fixture is more advantageous because the PCBs can be normally placed in the accommodation area without being obstructed by external forces or foreign objects, thereby preventing the PCBs from being deformed by external forces. After the PCBs are placed in the accommodation area, the first clamp moves from a first position to a second position to lock the PCBs, thereby securing the PCBs to the fixture.

[0008] Furthermore, a card slot for clamping the PCB board is formed on the first card member; there are two card slots; both card slots are provided with a pad for abutting the PCB board; a rotating member is provided at the first card member, and the rotating member is used to rotate the first card member from a first position to a second rotation position around a movable axis when the pad is worn; when the first card member is in the first rotation position, one of the card slots cooperates with the PCB board; when the first card member is in the second rotation position, the other card slot cooperates with the PCB board.

[0009] Two card slots are formed on the first card component, so any one of the two card slots can be used in conjunction with the second card component to lock the PCB board. Then, when one of the card slots has been used for a long time, it can be replaced with the other card slot for continued use, thereby improving the service life to a certain extent. In addition, a pad is installed at the card slot. The pad is flexible and can protect the PCB board to a certain extent. The pad can also prevent the card slot from being dented after being used for a long time, which affects the locking effect of the PCB board. In addition, if the pad is deformed after being used for a long time, it will cause deviation in the positioning of the locked PCB board. The first card component can be rotated and the other one that has not been deformed can be rotated to the PCB board to lock the PCB board.

[0010] Furthermore, a driving member and an abutment member are provided on the support plate, and a hinge portion and two opposite abutment portions are formed on the abutment member; the hinge portion is located between the two abutment portions, and the two abutment portions rotate synchronously with the hinge portion as the rotation center; the support plate is also provided with a mounting plate for mounting the abutment member and an elastic member for constituting a transmission between the mounting plate and the abutment portion; the elastic member is used to subject the two abutment portions to a driving external force that rotates oppositely around the hinge portion so that the two abutment portions and the hinge portion are both on a positioning line; a detection device is provided on the mounting plate; the driving device is used to drive the abutment member to approach the pad until it abuts against the pad or moves away from the pad.

[0011] The abutment is used to abut against the pad, or more precisely, the two abutment parts abut against the pad. If the pad is worn, the plane where the pad and the PCB abut will become uneven. After that, the position where the pad is worn is mainly the position where the PCB and the pad contact each other. Among them, there are two abutment parts, one of which is located at the position where the pad contacts the PCB, and the other is located at the position where the pad is away from the PCB and does not contact the PCB, which will cause the two abutment parts to rotate relative to the hinge part. Then the detection device detects the angle of rotation of the abutment part to determine the degree of wear of the pad.

[0012] Furthermore, the detection device is used to set a preset deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting part abuts the pad and obtain the real-time deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting part abuts the pad; when the real-time deviation is greater than the preset deviation, the rotating part causes the first clamping part to rotate from the first rotation position to the second rotation position.

[0013] The preset deviation is determined based on the wear level of the backing plate. If the actual deviation exceeds the preset deviation, it indicates that the backing plate is severely worn and can no longer be used. In this case, the first clamping member rotates from the first rotational position to the second rotational position, replacing a different clamping slot and simultaneously replacing a different backing plate. This allows for automatic detection of the backing plate's wear level and automatic replacement when excessive wear is detected.

[0014] Furthermore, the fixture is provided with a guide groove and a guide block slidably installed in the guide groove; the guide block is connected to the first clamping member; the guide block and the guide groove are used to preset the movement trajectory of the first clamping member.

[0015] Furthermore, the rotating member includes: a fixing rod, the fixing rod is fixedly connected to the guide block, and the first clamp is rotatably connected to the fixing rod; a fixing plate is provided on the fixing rod, and the fixing plate is fixedly connected to the fixing rod; a torsion spring is provided between the fixing plate and the first clamp, which is used to rotate the first clamp from the first rotation position to the second rotation position; a first clamp is formed on the first clamp; a second clamp and a third clamp are formed on the fixing plate; the second clamp is slidably connected to the fixing plate, and the third clamp is fixedly connected to the fixing plate; the first clamp is in the first rotation position, the first clamp abuts against the second clamp, and the second clamp is used to limit the first clamp; a pulling member is provided at the fixing plate; when the real-time deviation is greater than the preset deviation, the pulling member drives the second clamp to move up, so that the second clamp moves away from the first clamp.

[0016] Furthermore, the feeding assembly includes a first conveyor, a second conveyor, a chain elevator, a baffle provided on the chain elevator, and a first manipulator for transferring the fixture; the chain elevator is used to drive the baffle to move downward; the first conveyor is used to transport the fixture with the PCB board installed to the vicinity of the chain elevator; the first manipulator is used to transfer the fixture near the chain elevator to the baffle, and then the baffle drives the fixture to move downward to the second conveyor, and the second conveyor transports the fixture to the processing device for processing.

[0017] Furthermore, the unloading device includes: a dismantling component and a discharging component; the discharging component includes: a cylinder, a push plate, a carrier, a second manipulator and a third conveyor; the push plate is connected to the cylinder; the cylinder is used to push the push plate up and down; the cylinder is arranged near the carrier; the second conveyor transports the fixture to the carrier attachment, and the cylinder pushes the fixture up through the push plate, so that the fixture is stuck by the carrier; the transfer manipulator is used to transfer the fixture to the third conveyor; the dismantling component is used to remove the PCB board from the fixture.

[0018] Furthermore, the supporting member includes: a connecting plate, on which a plurality of rotating rods are rotatably mounted; a plurality of plug-in plates are fixedly mounted on the rotating rods; the rotating rods are rotatably connected to the connecting plate; a supporting surface is formed on the plug-in plate; a limiting member is provided on the connecting plate, and the limiting member is used to limit the plug-in plate to a position horizontal to the supporting surface; a slot is formed on the clamp, and the plug-in plate is inserted into the slot to support the clamp.

[0019] Furthermore, the removal component is the same as the installation component.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] This solution can fix PCB boards of different sizes, increasing versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the feeding assembly of the present invention;

[0024] Figure 3 For the present invention Figure 2 A magnified view of middle A;

[0025] Figure 4 It is a structural schematic diagram of the blanking device of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the carrying plate of the present invention;

[0027] Figure 6 This is a schematic diagram of the mounting assembly and fixture structure of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the clamp of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the first clamping member and some surrounding parts of the present invention;

[0030] Figure 9 It is a structural schematic diagram of the rotating member of the present invention;

[0031] Figure 10 This is a schematic structural diagram of the first card member of the present invention having two card slots;

[0032] Figure 11 It is a schematic structural diagram of the suction cup assembly of the present invention;

[0033] Figure 12 This is a schematic diagram of the installation assembly structure of the present invention;

[0034] Figure 13 It is a schematic diagram of the abutment structure of the present invention.

[0035] Description of the numbers in the figure:

[0036] 1. Loading device; 11. Mounting assembly; 111. Robotic arm; 112. Suction cup assembly; 113. Control member; 1131. Moving plate; 1132. Second driving cylinder; 114. Driving member; 1141. First driving cylinder; 115. Abutting member; 1151. Hinge; 1152. Abutting member; 116. Mounting plate; 117. Elastic member; 12. Feeding assembly; 121. First conveyor; 122. Second conveyor; 123. Chain lift; 124. Baffle; 2. Processing device; 3. Unloading device; 31. Cylinder; 32. Push plate; 33. Carrying member; 34. Third conveyor; 4. Clamp; 41. Support plate; 42. Rotating member; 421. Fixed rod; 422. Fixed plate; 423. Torsion spring; 424. First clamping plate; 425. Second clamping plate; 426. Third clamping plate; 427. Pulling member; 43. First clamping member; 44. Second clamping member; 45. Guide groove; 46. Guide block; 47. Pad; 48. Transmission member. DETAILED DESCRIPTION

[0037] See also Figure 1-13 ,

[0038] A PCB board automatic feeding and receiving integrated machine comprises a loading device, a processing device, a unloading device, and a fixture for mounting PCB boards. The loading device comprises: a mounting assembly and a feeding assembly. The fixture comprises: a support plate, a transmission member, a plurality of groups of first clamps and a plurality of groups of second clamps. The mounting assembly comprises: a robotic arm, a suction cup assembly, and a control member. The mounting assembly is used to mount the PCB board on the fixture. The feeding assembly is used to transport the fixture with the PCB board mounted thereon to the processing device for processing. The first clamp and the second clamp are both mounted on the support plate and form a receiving area for accommodating the PCB board. The fixture is provided with a guide groove and a guide block slidably mounted in the guide groove; the guide block is connected to the first clamp; the guide block and the guide groove are used to preset the motion trajectory of the first clamp. The first clamp moves along the preset motion trajectory to at least a first displacement position close to the PCB board and a second displacement position away from the PCB board, and can also move between the first position and the second position. The robotic arm is used to move the suction cup assembly and the control member toward or away from the installation area, and the suction cup assembly is used to suck and release the PCB board; the control member is used to control the first clamping member to move to the second displacement position when the suction cup assembly sucks the PCB board and moves toward the installation area; the transmission member is used to drive the first clamping member to move to the first displacement position to lock the PCB board when the suction cup assembly releases the PCB board.

[0039] Specifically, the clamp further includes: a pad and a transmission member. The transmission member is a spring, and the first clamp is a block-shaped structure. A slot for clamping a PCB board is formed on the first clamp; there are two slots; a pad is arranged at the slot, and the pad is used to abut against the PCB board; the number of pads matches the number of slots. A rotating member is arranged at the first clamp, and the rotating member is used to rotate the first clamp from a first position to a second rotation position around a movable axis when the pad is worn; when the first clamp is in the first rotation position, one of the slots cooperates with the PCB board; when the first clamp is in the second rotation position, the other slot cooperates with the PCB board.

[0040] More specifically, the mounting assembly further includes: a driving member, an abutting member, a mounting plate, an elastic member and a detection device; the abutting member includes: a hinged portion and an abutting portion. The abutting portion is two protrusions formed on the abutting member; the hinged portion is a hinge, which adopts the existing technology. The driving member includes: a first driving cylinder; the control member includes: a moving plate and a second driving cylinder. The driving member and the abutting member are both arranged on the support plate, and the abutting portion and the hinged portion are both formed on the abutting member; there is one hinged portion, which is located between the two abutting portions, and the two abutting portions are arranged on the abutting member in back-to-back relation. In this embodiment, the abutting member is a rod-shaped structure, and the two abutting portions are arranged on the two ends of the abutting member; the hinged portion enables the two abutting portions to rotate synchronously with the hinged portion as the rotation center. To be precise, the abutting member can rotate around the hinged portion, and then the two abutting portions will rotate synchronously. The mounting plate and the elastic member are both arranged on the support plate. The mounting plate is provided with an abutment member, and the elastic member is used to form a transmission between the mounting plate and the abutment portion; to be precise, the elastic member is used to subject the two abutment portions to a driving external force that rotates in opposite directions around the hinge portion so that the two abutment portions and the hinge portion are all on the same positioning line; the detection device is mounted on the mounting plate; the detection device is an infrared sensor for detecting the position of the abutment member; the driving device is used to drive the abutment member to approach the pad until it abuts against the pad or moves away from the pad.

[0041] The first driving cylinder is used to drive the movable plate to move, and the movable plate will drive the second driving cylinder to move. The mounting plate is connected to the second driving cylinder. The second driving cylinder can drive the mounting plate to move up and down, thereby causing the abutment to move up or down.

[0042] More specifically, the detection device is used to set a preset deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting part abuts the pad and obtain the real-time deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting part abuts the pad; when the real-time deviation is greater than the preset deviation, the rotating part causes the first clamping part to rotate from the first rotation position to the second rotation position.

[0043] Specifically, the rotating member includes a fixed rod, a fixed plate, a torsion spring, a first clamping plate, a second clamping plate, a third clamping plate, and a pulling member. The pulling member includes a mechanical claw and a third driving cylinder, which moves the mechanical claw upward or downward. The third driving cylinder is fixedly mounted on the movable plate. The fixing rod is fixedly connected to the guide block, and the first clamp is rotatably connected to the fixing rod; the fixing plate is fixedly connected to the fixing rod; a torsion spring is disposed between the fixing plate and the first clamp, and the torsion spring is used to rotate the first clamp from a first rotational position to a second rotational position; the first clamp is fixedly disposed on the first clamp, and the second and third clamps are located on the fixing plate; the second clamp is slidably connected to the fixing plate, and the third clamp is fixedly connected to the fixing plate; the first clamp is in the first rotational position, the first clamp abuts the second clamp, and the second clamp is used to limit the first clamp; a pulling member is disposed on the fixing plate, and a mechanical claw is connected to the third driving cylinder, and the mechanical claw is used to clamp the second clamp and then move the second clamp upward, so that the second clamp is not locked with the first clamp, thereby causing the torsion spring to drive the first clamp to rotate. When the real-time deviation is greater than the preset deviation, the pulling member drives the second clamp upward, so that the second clamp moves away from the first clamp.

[0044] Specifically, the feeding assembly includes a first conveyor, a second conveyor, a chain elevator, a baffle provided on the chain elevator, and a first manipulator for transferring the fixture; the chain elevator adopts the existing technology, the baffle is installed on the chain of the chain conveyor, and the chain elevator is used to drive the baffle to move downward; the first conveyor is used to transport the fixture with the PCB board installed to the vicinity of the chain elevator; the first manipulator is used to transfer the fixture near the chain elevator to the baffle, and then the baffle drives the fixture to move down to the second conveyor, and the second conveyor transports the fixture to the processing device for processing.

[0045] Specifically, the unloading device includes: a removal component and a discharge component. The discharge component includes: a cylinder, a push plate, a carrier, a second manipulator and a third conveyor. The push plate is connected to the cylinder; the cylinder is used to push the push plate up and down; the cylinder is arranged near the carrier; the second conveyor transports the clamp to the carrier attachment, and the cylinder pushes the clamp up through the push plate so that the clamp is stuck by the carrier; the transfer manipulator is used to transfer the clamp to the third conveyor; the removal component is used to remove the PCB board from the clamp. The carrier includes: a connecting plate, on which a plurality of rotating rods are rotatably mounted; a plurality of plug plates are fixedly mounted on the rotating rod; the rotating rod is rotatably connected to the connecting plate; a support surface is formed on the plug plate; a limit member is provided on the connecting plate, and the limit member is used to limit the plug plate to a position horizontal to the support surface; the limit member is a plate-like structure, and a raised plate-like structure is also provided on the rotating rod, so that the rotating rod and the limit member cooperate to lock the position. A slot is formed on the clamp, and the inserting plate is inserted into the slot to support the clamp.

[0046] Specifically, the removal component is the same as the installation component.

[0047] Workflow:

[0048] First, the support plate is driven by a robotic arm to install the PCB into the fixture. The process is as follows: the robotic arm drives the support plate to the PCB, whereupon the suction cup assembly sucks the PCB to remove a PCB. The robotic arm then drives the support plate to the receiving area. The support plate then remains stationary, while the second drive cylinder moves the mounting plate and abutment downward. The first drive cylinder then drives the movable plate to move closer to the first fixture. The mounting plate and abutment on the movable plate then move closer to the first fixture. The abutment then abuts against the pad on the first fixture. The first drive cylinder then continues to drive the movable plate closer to the first fixture, pushing the first fixture further away from the second fixture, thereby increasing the size of the receiving area. The suction cup assembly then places the PCB into the receiving area. The first drive cylinder then resets, and the second cylinder resets, causing the first fixture to reset under the action of the transmission member and guide block, locking the first and second fixtures in place.

[0049] As the abutment pushes the first clamping member away from the second clamping member, the detection device detects the deviation between the two abutment parts and the hinged part. When the detected real-time deviation is greater than the preset deviation, the third cylinder moves the mechanical claw downward, clamping the second clamping plate. The third drive cylinder then moves upward, and the mechanical claw pulls the second clamping plate upward, so that the second clamping plate no longer abuts the first clamping plate. The first clamping member then rotates around the fixed rod under the action of the torsion spring, causing the other clamping slot to rotate and continue to be used.

[0050] After the PCB board is installed, the first robot places the fixture on the feeding assembly, more precisely, on the first conveyor. Then the first conveyor sends the fixture to the chain elevator. The first robot then places the fixture on the baffle of the chain elevator. The baffle moves down, driving the fixture down. The fixture will fall onto the second conveyor, and then the second conveyor drives the fixture to the processing device to process the PCB board.

[0051] Then the second conveyor drives the clamp to the unloading device, specifically, it will transport the clamp to the carrier, and then the lifting cylinder pushes the push plate up, the push plate drives the clamp up, and when the clamp moves up, it will hit the plug plate, and then the plug plate can rotate upward, so that the clamp will be sent to the top of the plug plate. After the clamp reaches the top of the plug plate, the plug plate is not affected by external force, and the plug plate will rotate downward, and then the rotating rod will rotate together. After the rotating rod rotates to a certain position, it will be stuck in the position by the limit piece, so that the plug plate will stop rotating. At this time, the support surface on the plug plate is facing up, and then the lifting cylinder moves downward, and the clamp moves down and falls on the plug plate, so that it will be supported by the plug plate.

[0052] In some implementations, multiple insert plates and rotating rods are arranged in a vertical direction. Multiple insert plates can then support multiple fixtures. The height of the first and second clamps on the fixtures is approximately the same as the height distance between any two insert plates. Therefore, the upward movement of one fixture can drive the upward movement of another fixture, thereby enabling multiple fixtures to be clamped and supported by the clamp plates. The second robot then removes the topmost fixture and places it on a third conveyor. The third conveyor then transports the fixture to the disassembly assembly, which removes the processed PCB from the fixture.

Claims

1. A PCB board automatic feeding and receiving integrated machine, comprising a feeding device, a processing device and a unloading device; characterized in that: The present invention also includes a clamp for mounting a PCB board; the loading device includes: a mounting assembly for mounting the PCB board on the clamp and a feeding assembly for transporting the clamp with the PCB board mounted thereon to a processing device for processing; the clamp includes: a support plate, a transmission member, a plurality of first clamps and a plurality of second clamps; the first clamps and the second clamps are both mounted on the support plate and form a receiving area for receiving the PCB board; the first clamp moves along a preset motion trajectory to at least a first displacement position close to the PCB board and a second displacement position away from the PCB board; the mounting assembly includes: a robotic arm, a suction cup assembly and a control member; the robotic arm is used to move the suction cup assembly and the control member close to or away from the mounting area, the suction cup assembly is used to suck and release the PCB board; the control member is used to control the first clamp to move to the second displacement position when the suction cup assembly sucks the PCB board and moves close to the mounting area; the transmission member is used to drive the first clamp to move to the first displacement position to lock the PCB board when the suction cup assembly releases the PCB board; The first clamping member is formed with a clamping slot for clamping the PCB; there are at least two clamping slots; each of the two clamping slots is provided with a pad for abutting the PCB; the first clamping member is provided with a rotating member, and the rotating member is used to rotate the first clamping member from a first position to a second rotational position about a movable axis when the pad is worn; when the first clamping member is in the first rotational position, one of the clamping slots engages with the PCB; when the first clamping member is in the second rotational position, the other clamping slot engages with the PCB; The support plate is provided with a driving member and an abutment member, and a hinge portion and two abutment portions facing away from each other are formed on the abutment member; the hinge portion is located between the two abutment portions, and the two abutment portions rotate synchronously with the hinge portion as the rotation center; the support plate is also provided with a mounting plate for mounting the abutment member and an elastic member for forming a transmission between the mounting plate and the abutment portion; the elastic member is used to subject the two abutment portions to a driving external force rotating in opposite directions around the hinge portion so that the two abutment portions and the hinge portion are all in a positioning straight line; a detection device is provided on the mounting plate; the driving member is used to drive the abutment member to approach the pad to abut against the pad or away from the pad; The detection device is used to set a preset deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting member abuts the pad and obtain the real-time deviation of the two abutting parts and the hinged part from the positioning straight line when the abutting member abuts the pad; when the real-time deviation is greater than the preset deviation, the rotating member causes the first clamping member to rotate from the first rotation position to the second rotation position.

2. The PCB automatic feeding and receiving machine according to claim 1, characterized in that: The fixture is provided with a guide groove and a guide block slidably installed in the guide groove; the guide block is connected to the first clamping member; the guide block and the guide groove are used to preset the movement trajectory of the first clamping member.

3. The PCB automatic feeding and receiving machine according to claim 2, characterized in that: The rotating member includes: a fixed rod, the fixed rod is fixedly connected to the guide block, and the first clamping member is rotatably connected to the fixed rod; a fixed plate is provided on the fixed rod, and the fixed plate is fixedly connected to the fixed rod; A torsion spring is provided between the fixed plate and the first clamping member, and the torsion spring is used to rotate the first clamping member from the first rotation position to the second rotation position; a first clamping plate is formed on the first clamping member; a second clamping plate and a third clamping plate are formed on the fixed plate; the second clamping plate is slidably connected to the fixed plate, and the third clamping plate is fixedly connected to the fixed plate; the first clamping member is in the first rotation position, the first clamping plate abuts against the second clamping plate, and the second clamping plate is used to limit the first clamping member; a pulling member is provided at the fixed plate; when the real-time deviation is greater than the preset deviation, the pulling member drives the second clamping plate to move up, so that the second clamping plate moves away from the first clamping plate.

4. The PCB automatic feeding and receiving machine according to claim 1, characterized in that: The feeding assembly includes a first conveyor, a second conveyor, a chain elevator, a baffle provided on the chain elevator, and a first manipulator for transferring the fixture; the chain elevator is used to drive the baffle to move downward; the first conveyor is used to transport the fixture with the PCB board installed to the vicinity of the chain elevator; the first manipulator is used to transfer the fixture near the chain elevator to the baffle, and then the baffle drives the fixture to move downward to the second conveyor, and the second conveyor transports the fixture to the processing device for processing.

5. The PCB automatic feeding and receiving machine according to claim 4, characterized in that: The unloading device includes: a dismantling component and a discharging component; the discharging component includes: a cylinder, a push plate, a carrier, a second manipulator and a third conveyor; the push plate is connected to the cylinder; the cylinder is used to push the push plate up and down; the cylinder is arranged near the carrier; the second conveyor transports the clamp to the vicinity of the carrier, and the cylinder pushes the clamp up through the push plate, so that the clamp is stuck by the carrier; the second manipulator is used to transfer the clamp to the third conveyor; the dismantling component is used to remove the PCB board from the clamp.

6. The PCB automatic feeding and receiving machine according to claim 5, characterized in that: The supporting member includes: a connecting plate, on which a plurality of rotating rods are rotatably mounted; a plurality of plug-in plates are fixedly mounted on the rotating rods; the rotating rods are rotatably connected to the connecting plate; a supporting surface is formed on the plug-in plate; a limiting member is provided on the connecting plate, and the limiting member is used to limit the plug-in plate to a position horizontal to the supporting surface; a slot is formed on the clamp, and the plug-in plate is inserted into the slot to support the clamp.

7. The PCB automatic feeding and receiving machine according to claim 5, characterized in that: The removal assembly is identical to the installation assembly.

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