Circuit board clamping device for circuit board production

Abstract

The invention provides a circuit board clamping device for circuit board production, and relates to the technical field of clamping devices.The circuit board clamping device comprises an electric rotating table, an electric push rod is mounted at the rotating end of the electric rotating table, a mounting disc is fixedly mounted at the output end of the electric push rod, and a connecting plate is fixedly mounted on one side of the mounting disc; according to the invention, each connecting cylinder is connected with the corresponding matched extension rod in a penetrating manner, so that the lower rubber rods can be adjusted up and down within a certain range, the plurality of rubber rods are moved downwards to the circuit board through the electric push rod, and the circuit board can be fixed through the up and down adjustment of each rubber rod. Compared with an existing clamping device, the clamping device has the advantages that the clamping device can adapt to the position of the circuit board by arranging the multiple rubber rods to achieve arbitrary clamping, the placement position of the circuit board does not need to be additionally adjusted, and the clamping efficiency is improved. And compared with the prior art, the device is more efficient under continuous clamping and transferring.

Description

Technical Field

[0001] The present invention relates to the technical field of clamping devices, and in particular to a circuit board clamping device used for circuit board production. Background Art

[0002] During the production process, circuit boards need to be transferred to different processing stations, where the circuit boards are generally transported to the vicinity of the stations by conveyor belts. However, different electronic devices will be installed on the surface of the circuit boards during the production process, which makes it impossible to use suction cups and other equipment for transfer. Therefore, a clamping device is needed to transfer the circuit boards to the stations. For example, patent announcement number CN209382967U is a clamping and transferring device for a circuit board production line, which belongs to the technical field of circuit board production lines. The key points of its technical solution are as follows: it includes a mounting seat mounted on a frame; a turntable mounted on the side end face of the mounting seat; a first drive assembly disposed on the mounting seat for driving the turntable to rotate; an extension plate mounted on the turntable; a support plate slidably connected to the extension plate; a second drive assembly disposed on the extension plate for driving the support plate to slide along the extension direction of the extension plate; a rotating plate hinged on the support plate; a third drive assembly for driving the rotating plate to rotate so that the rotating plate is in a horizontal position; and a clamping assembly mounted on the side of the rotating plate away from the support plate for clamping the circuit board. When in use, the clamping and transferring device of the utility model can automatically transfer the circuit boards on the conveyor belt to the drying system instead of manual work, thereby reducing the workload of the staff and reducing the damage to the circuit boards.

[0003] However, when the existing clamping device clamps the circuit board, the position of the circuit board changes when it is transported, resulting in a mismatch between the clamping position of the existing clamping device and the circuit board during the clamping process, and then the position of the circuit board needs to be adjusted, which reduces the clamping efficiency of the existing clamping device. For this reason, the present application designs a circuit board clamping device for circuit board production, which can perform stable clamping operations without being affected by the placement position of the circuit board. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a circuit board clamping device for circuit board production, which solves the problem that the clamping efficiency of the prior art clamping device is affected by the different placement positions of the circuit board.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A circuit board clamping device for circuit board production comprises an electric rotating table, an electric push rod is installed on the rotating end of the electric rotating table, a mounting plate is fixedly installed on the output end of the electric push rod, a connecting plate is fixedly installed on one side of the mounting plate, a driving component for controlling clamping is fixedly installed on one end of the connecting plate, a clamping component for clamping the circuit board is installed on the lower side of the driving component, and a micro air pump for controlling the driving component is fixedly installed on the upper surface of the connecting plate.

[0007] Preferably, the driving assembly includes an outer shell, a partition plate is fixedly installed inside the outer shell, an exchange cavity for gas entry and exit is provided on the upper side of the partition plate, a movable cavity for the movement of the clamping assembly is provided on the lower side of the partition plate, and a plurality of movable mounting sleeves for accommodating the clamping assembly are fixedly installed on the bottom of the movable cavity.

[0008] Preferably, the exchange cavity has an opening at the upper end and a sealing joint installed inside, a solenoid valve for maintaining a clamping state is provided inside the sealing joint, and a delivery pipeline is connected between the upper end of the sealing joint and the air outlet end of the micro air pump.

[0009] Preferably, the partition plate body is provided with a plurality of mounting holes, a ventilator is installed inside each mounting hole, and an exchange channel is provided inside the ventilator.

[0010] Preferably, a matching extension rod is installed at the bottom of the vent cylinder, a vent hole is opened inside the matching extension rod, and the vent hole opening is arranged on the side of the matching extension rod.

[0011] Preferably, the clamping assembly includes a plurality of connecting tubes, each of which is installed in a corresponding movable mounting sleeve, and a matching hole is formed at the upper end of each connecting tube, and the matching hole is connected with the matching extension rod through insertion;

[0012] A rubber rod for clamping the circuit board is respectively installed at the lower end of each connecting tube through a fixed connecting ring, and a buffer ball for preventing damage to the circuit board is arranged at the lower end of each rubber rod.

[0013] Preferably, a ventilation cavity is provided on the upper side of the interior of the connecting tube, and the ventilation cavity is located outside the vent hole and is interconnected with the interior thereof;

[0014] A ventilation channel is provided at the lower side of the interior of the connecting tube, and a sealing sleeve for blocking the ventilation hole is provided on the inner wall of the ventilation channel.

[0015] Preferably, a reset spring for resetting the rubber rod is fixedly installed between the upper end of each connecting cylinder and the lower end of the corresponding ventilation cylinder.

[0016] Preferably, an air inlet hole for receiving gas is provided inside the rubber rod, a reinforcing wall for supporting the rubber rod is provided on one side of the inner wall of the rubber rod, a bending wall for bending the rubber rod is provided on the other side of the inner wall of the rubber rod, a matching bending groove for matching bending is provided on the outer side of the reinforcing wall, and a folding extension layer for matching extension is provided on the outer side of the bending wall.

[0017] Preferably, the inner side of the buffer ball is provided with a storage air groove, and folding storage films are installed on both sides of the inner wall of the storage air groove, and a connecting reinforcement film is integrated between the folding storage films on both sides, and the outer side of the connecting reinforcement film is connected to an auxiliary support plate for assisting in lifting the circuit board.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Start the micro air pump to deliver the gas to the exchange cavity inside the shell through the delivery pipe, and then use continuous gasification to make the gas enter the corresponding exchange channels to realize the synchronous gasification operation of several exchange channels. The above structure can be used to inflate the clamping component, and the clamping component can perform clamping operation after inflation. In order to maintain the inflation state of the clamping component, the upper end of the exchange cavity can be sealed by setting an electromagnetic valve to avoid leakage of the gas inside the exchange cavity. Similarly, when releasing the clamp, it is only necessary to close the electromagnetic valve to discharge the gas inside the exchange cavity.

[0020] 2. In the present application, each connecting tube is connected with the corresponding matching extension rod through an interlaced connection, so that the rubber rods below can be adjusted up and down within a certain range, wherein a plurality of rubber rods are moved downward to the circuit board by an electric push rod, and each rubber rod is adjusted up and down to adapt to the size of the current circuit board and the thickness of the components above it, so as to adapt to the current position of the circuit board. Compared with the existing clamping device, the present application can adapt to the position of the circuit board to achieve arbitrary clamping by setting multiple rubber rods, without the need to additionally adjust the placement of the circuit board, which also makes the present application more efficient than the existing technology under continuous clamping and transfer.

[0021] After the clamping is completed, in order to ensure that the position of the rubber rod is consistent so as to facilitate the next size matching, a reset spring is installed between each connecting tube and the corresponding vent tube. When the clamping assembly leaves the circuit board, the reset spring can be used to support the connecting tube to reset downward to facilitate the next round of clamping operation.

[0022] 3. By cooperating with the bending groove, the inner side of the rubber rod will not be squeezed when it is bent, which will affect the clamping strength. Through a plurality of folding extension layers, the outer side of the rubber rod can have sufficient material for extension in time when it is bent, avoiding the situation where the clamping range is limited due to insufficient material. In addition, by using a plurality of folding extension layers, the rubber rod can be folded when erected, which can ensure that the rubber rod can be clamped frequently.

[0023] The present application can adapt to circuit boards of different positions and sizes. In order to achieve clamping of the circuit board, after the size is confirmed, the micro air pump is started to discharge the gas, wherein the gas will be guided into each air inlet hole. When the gas is gradually discharged, the bending compressive strengths of the reinforcing wall, the folded storage film, and the curved wall are different, so that one side of the curved wall will bend, and the reinforcing wall on the other side will be close to the circuit board for clamping, thereby realizing automatic clamping operation. After clamping, the solenoid valve needs to be closed to maintain the clamping state of each rubber rod, and until the circuit board is transferred to the processing position, the solenoid valve is opened to exhaust gas to achieve rapid lowering operation.

[0024] 4. In the present application, the bending compressive strength is from high to low in the order of the reinforcing wall, the folded storage film, and the bending wall. Through the above strength, the bending wall is first pre-bent inward when clamping, and when the bending is in place, the folded storage film will extend outward again, so that the connecting reinforcing film in the middle is discharged from the storage air groove, and the auxiliary support plate is extended to the bottom of the circuit board. The circuit board is supported by multiple auxiliary support plates, and the reinforcing wall can be used to prevent the side close to the circuit board from large-scale deformation, so as to ensure the subsequent clamping effect;

[0025] When the circuit board is lowered, the gas continues to leak out, and the folded storage film is first retracted due to the difference in compressive strength, so that the auxiliary support plate is reset, and then the bent wall tends to stand upright. During this process, several folded extension layers are folded and reset in coordination with the bending groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0027] Figure 2 It is a top view structural schematic diagram of the present application;

[0028] Figure 3 yes Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the drive component;

[0030] Figure 5 1 is a schematic diagram of the structure of the drive assembly viewed from above;

[0031] Figure 6yes Figure 5 Schematic diagram of the cross-section structure at BB in the middle;

[0032] Figure 7 yes Figure 6 The enlarged structural diagram at a in the middle;

[0033] Figure 8 It is a schematic diagram of the bending three-dimensional structure of the rubber rod;

[0034] Fig. 9 Schematic diagram of the bending structure of the rubber rod from top view;

[0035] Fig.10 yes Fig. 9 Schematic diagram of the cross-section structure at CC;

[0036] Fig.11 It is a schematic diagram of the vertical three-dimensional structure of the rubber rod;

[0037] Fig.12 1. It is a schematic diagram of the vertical top view of the rubber rod;

[0038] Fig.13 yes Fig.12 Schematic diagram of the cross-sectional structure at DD in the middle.

[0039] In the figure: 1, electric rotating table; 2, electric push rod; 3, mounting plate; 4, connecting plate; 401, micro air pump; 402, delivery pipeline; 5, driving assembly; 501, housing; 502, exchange cavity; 503, movable cavity; 504, movable mounting sleeve; 505, partition plate; 506, mounting hole; 507, ventilator; 508, exchange channel; 509, matching extension rod; 510, ventilator hole; 511, reset spring; 6, clamping assembly; 601, connecting cylinder; 60 11. Matching hole; 6012. Ventilation cavity; 6013. Sealing sleeve; 6014. Ventilation channel; 602. Rubber rod; 6021. Fixed connecting ring; 6022. Reinforcement wall; 6023. Folding extension layer; 6024. Matching bending groove; 6025. Bending wall; 6026. Air inlet hole; 603. Buffer ball; 6031. Storage air groove; 6032. Folding storage film; 6033. Connection reinforcement film; 6034. Auxiliary support plate; 7. Sealing joint; 8. Solenoid valve. DETAILED DESCRIPTION

[0040] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] like Figures 1 to 13 As shown, a circuit board clamping device for circuit board production includes an electric rotating table 1, an electric push rod 2 is installed on the rotating end of the electric rotating table 1, a mounting plate 3 is fixedly installed on the output end of the electric push rod 2, a connecting plate 4 is fixedly installed on one side of the mounting plate 3, a driving component 5 for controlling clamping is fixedly installed on one end of the connecting plate 4, a clamping component 6 for clamping the circuit board is installed on the lower side of the driving component 5, and a micro air pump 401 for controlling the driving component 5 is fixedly installed on the upper surface of the connecting plate 4.

[0042] In the present application, the connecting plate 4 can be rotated by the electric rotating table 1 to realize the position switching of the connecting plate 4, wherein the connecting plate 4 can be moved up and down by the electric push rod 2 to realize the up and down adjustment of the connecting plate 4. Through the above structure, the driving component 5 and the clamping component 6 connected to the connecting plate 4 can be switched for connection on the conveyor belt and the processing station, and then the clamping component 6 is used to clamp the circuit board located on the conveyor belt, so as to realize efficient connection, clamping and transfer.

[0043] In this embodiment, the driving assembly 5 includes a housing 501, a partition plate 505 is fixedly installed inside the housing 501, an exchange cavity 502 for gas in and out is arranged on the upper side of the partition plate 505, and a movable cavity 503 for the movement of the clamping assembly 6 is arranged on the lower side of the partition plate 505, and a plurality of movable installation sleeves 504 for accommodating the clamping assembly 6 are fixedly installed at the bottom of the movable cavity 503;

[0044] The upper end of the exchange cavity 502 is provided with an opening and a sealing joint 7 is installed inside. The sealing joint 7 is provided with a solenoid valve 8 for maintaining the clamping state. A delivery pipeline 402 is connected between the upper end of the sealing joint 7 and the air outlet end of the micro air pump 401.

[0045] The partition plate 505 is provided with a plurality of mounting holes 506, each mounting hole 506 is provided with a ventilator 507, and the ventilator 507 is provided with an exchange channel 508;

[0046] A matching extension rod 509 is installed at the bottom of the vent cylinder 507 . A vent hole 510 is opened inside the matching extension rod 509 . The opening of the vent hole 510 is arranged on the side of the matching extension rod 509 .

[0047] By starting the micro air pump 401, the gas is delivered to the exchange cavity 502 inside the shell 501 through the delivery pipe 402, and then the gas is continuously added to allow the gas to enter the corresponding exchange channels 508 to realize the synchronous gas filling operation of several exchange channels 508. The above structure can be used to realize the inflation operation of the clamping component 6, wherein the clamping component 6 can perform the clamping operation after inflation. In order to maintain the inflation state of the clamping component 6, the upper end of the exchange cavity 502 can be sealed by setting the solenoid valve 8 to prevent the internal gas of the exchange cavity 502 from leaking. Similarly, when releasing the clamping, it is only necessary to close the solenoid valve 8 to discharge the internal gas of the exchange cavity 502.

[0048] In this embodiment, the clamping assembly 6 includes a plurality of connecting tubes 601, each of which is installed in the corresponding movable mounting sleeve 504, and a matching hole 6011 is formed at the upper end of each connecting tube 601, and the matching hole 6011 is interlaced and connected with the matching extension rod 509;

[0049] A rubber rod 602 for clamping the circuit board is respectively installed at the lower end of each connecting cylinder 601 through a fixed connecting ring 6021 , and a buffer ball 603 for preventing damage to the circuit board is arranged at the lower end of each rubber rod 602 .

[0050] It should be noted that a ventilation cavity 6012 is provided on the upper side of the interior of the connecting tube 601. The ventilation cavity 6012 is located outside the vent hole 510 and the interiors are interconnected.

[0051] A ventilation channel 6014 is provided at the lower side of the connecting tube 601, and a sealing sleeve 6013 is provided on the inner wall of the ventilation channel 6014 for blocking the ventilation hole 510;

[0052] A return spring 511 for returning the rubber rod 602 is fixedly installed between the upper end of each connecting cylinder 601 and the lower end of the corresponding ventilation cylinder 507 .

[0053] In the present application, each connecting tube 601 is interlaced with the corresponding matching extension rod 509, so that the rubber rod 602 below can be adjusted up and down within a certain range, wherein a plurality of rubber rods 602 are moved downward to the circuit board by the electric push rod 2, and each rubber rod 602 is adjusted up and down to adapt to the size of the current circuit board and the thickness of the components above it, so as to adapt to the current position of the circuit board. Compared with the existing clamping device, the present application can adapt to the position of the circuit board to achieve arbitrary clamping by setting multiple rubber rods 602, without the need to additionally adjust the placement position of the circuit board, which also makes the present application more efficient than the existing technology under continuous clamping and transfer.

[0054] After the clamping is completed, in order to ensure that the rubber rod 602 is in the same position to facilitate the next size matching, a reset spring 511 is installed between each connecting tube 601 and the corresponding vent tube 507. When the clamping assembly 6 leaves the circuit board, the reset spring 511 is used to support the connecting tube 601 to reset downward to facilitate the next round of clamping operation.

[0055] In the specific setting, an air inlet hole 6026 for receiving gas is opened inside the rubber rod 602, a reinforcing wall 6022 for supporting the rubber rod 602 is set on one side of the inner wall of the rubber rod 602, a bending wall 6025 for bending the rubber rod 602 is set on the other side of the inner wall of the rubber rod 602, a matching bending groove 6024 for matching bending is opened on the outer side of the reinforcing wall 6022, and a folding extension layer 6023 for matching extension is set on the outer side of the bending wall 6025.

[0056] By cooperating with the bending groove 6024, the inner side of the rubber rod 602 will not be squeezed when it is bent, which will affect the clamping strength. Through the multiple folding extension layers 6023, the outer side of the rubber rod 602 can have enough material to extend when it is bent, avoiding the situation where the clamping range is limited due to insufficient material. In addition, the multiple folding extension layers 6023 can be folded when erected, which can ensure that the rubber rod 602 can be clamped frequently.

[0057] The present application can adapt to circuit boards of different positions and sizes. In order to clamp the circuit board, after the size is confirmed, the micro air pump 401 is started to discharge gas, wherein the gas will be guided into each air inlet 6026. When the gas is gradually discharged, the bending compressive strengths among the reinforcing wall 6022, the folding storage film 6032, and the curved wall 6025 are different, so that one side of the curved wall 6025 will bend, and the reinforcing wall 6022 on the other side will be close to the circuit board for clamping, thereby realizing automatic clamping operation. After clamping, the solenoid valve 8 needs to be closed to maintain the clamping state of each rubber rod 602, and until the circuit board is transferred to the processing position, the solenoid valve 8 is opened to exhaust gas to realize rapid lowering operation.

[0058] In the present application, a storage air groove 6031 is opened on the inner side of the buffer ball 603, and folding storage films 6032 are installed on both sides of the inner wall of the storage air groove 6031. A connection reinforcement film 6033 is integrated between the folding storage films 6032 on both sides, and an auxiliary support plate 6034 for assisting in lifting the circuit board is connected to the outer side of the connection reinforcement film 6033.

[0059] In the present application, the bending compressive strength is from high to low in the order of the reinforcing wall 6022, the folding storage film 6032, and the bending wall 6025. The above strength allows the bending wall 6025 to be pre-bent inwards first during clamping. When the bending is in place, the folding storage film 6032 will extend outwards again, so that the connecting reinforcing film 6033 in the middle is discharged from the storage air groove 6031, and the auxiliary support plate 6034 is extended to the bottom of the circuit board. The circuit board is supported by multiple auxiliary support plates 6034, wherein the reinforcing wall 6022 can be used to prevent a large-scale deformation of the side close to the circuit board, so as to ensure the subsequent clamping effect.

[0060] When the circuit board is lowered, the gas continues to leak out, and the folding storage film 6032 is first recovered due to the difference in compressive strength, so that the auxiliary support plate 6034 is restored, and then the curved wall 6025 tends to stand upright. During this process, several folding extension layers 6023 are folded and restored in coordination with the bending groove 6024.

[0061] The working principle of a circuit board clamping device used for circuit board production:

[0062] When in use, the connecting plate 4 can be rotated by the electric rotating table 1 to switch the position of the connecting plate 4, and the connecting plate 4 can be moved up and down by the electric push rod 2 to adjust the connecting plate 4 up and down, so that when the circuit board is transported from the conveyor belt, the electric rotating table 1 can be used to align the circuit board with the clamping assembly 6;

[0063] After alignment, the electric push rod 2 is started again to make the clamping assembly 6 move downward and close to the circuit board. Each rubber rod 602 is adjusted up and down to make each rubber rod 602 adapt to the size of the current circuit board and the thickness of the components above it, so as to adapt to the position of the current circuit board. Then, the micro air pump 401 is started to discharge gas, wherein the gas is guided into each air inlet 6026. When the gas is gradually discharged, by setting different bending compressive strengths of different structures, one side of the bending wall 6025 is bent, and the reinforcing wall 6022 on the other side is close to the circuit board for clamping;

[0064] After clamping, the solenoid valve 8 needs to be closed to maintain the clamping state of each rubber rod 602;

[0065] Then the circuit board is moved to the processing position by the electric rotating table 1, and then the solenoid valve 8 is opened to exhaust air to realize the rapid lowering operation.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A circuit board clamping device for circuit board production, comprising an electric rotating table (1), characterized in that: The rotating end of the electric rotary table (1) is mounted with an electric push rod (2), the output end of the electric push rod (2) is fixedly mounted with a mounting plate (3), one side of the mounting plate (3) is fixedly mounted with a connecting plate (4), one end of the connecting plate (4) is fixedly mounted with a driving component (5) for controlling clamping, a clamping component (6) for clamping a circuit board is mounted on the lower side of the driving component (5), and a micro air pump (401) for controlling the driving component (5) is fixedly mounted on the upper surface of the connecting plate (4).

2. A circuit board clamping device for circuit board production according to claim 1, characterized in that: The driving assembly (5) comprises a housing (501), a partition plate (505) is fixedly mounted inside the housing (501), an exchange cavity (502) for gas inlet and outlet is arranged on the upper side of the partition plate (505), a movable cavity (503) for the movement of the clamping assembly (6) is arranged on the lower side of the partition plate (505), and a plurality of movable mounting sleeves (504) for accommodating the clamping assembly (6) are fixedly mounted on the bottom of the movable cavity (503).

3. A circuit board clamping device for circuit board production according to claim 2, characterized in that: The exchange cavity (502) has an opening at the upper end and a sealing joint (7) installed inside. The sealing joint (7) has a solenoid valve (8) for maintaining a clamping state arranged inside. A delivery pipe (402) is connected between the upper end of the sealing joint (7) and the air outlet of the micro air pump (401).

4. A circuit board clamping device for circuit board production according to claim 2, characterized in that: The body of the partition plate (505) is provided with a plurality of mounting holes (506), a ventilator (507) is installed inside each mounting hole (506), and an exchange channel (508) is provided inside the ventilator (507).

5. A circuit board clamping device for circuit board production according to claim 4, characterized in that: A matching extension rod (509) is installed at the bottom of the vent cylinder (507), a vent hole (510) is provided inside the matching extension rod (509), and the opening of the vent hole (510) is arranged on the side of the matching extension rod (509).

6. A circuit board clamping device for circuit board production according to claim 5, characterized in that: The clamping assembly (6) comprises a plurality of connecting tubes (601), each of the connecting tubes (601) being mounted inside a corresponding movable mounting sleeve (504), and a matching hole (6011) is formed at the upper end of each connecting tube (601), and the matching hole (6011) is interlacedly connected with the matching extension rod (509); A rubber rod (602) for clamping a circuit board is mounted on the lower end of each connecting cylinder (601) via a fixed connecting ring (6021), and a buffer ball (603) for preventing damage to the circuit board is arranged on the lower end of each rubber rod (602).

7. A circuit board clamping device for circuit board production according to claim 6, characterized in that: A ventilation cavity (6012) is provided on the upper inner side of the connecting tube (601), and the ventilation cavity (6012) is located outside the vent hole (510) and is interconnected with the inside thereof; A ventilation channel (6014) is provided on the lower inner side of the connecting tube (601), and a sealing sleeve (6013) for blocking the ventilation hole (510) is provided on the inner wall of the ventilation channel (6014).

8. A circuit board clamping device for circuit board production according to claim 7, characterized in that: A return spring (511) for returning the rubber rod (602) is fixedly installed between the upper end of each connecting cylinder (601) and the lower end of the corresponding ventilation cylinder (507).

9. A circuit board clamping device for circuit board production according to claim 6, characterized in that: An air inlet hole (6026) for receiving gas is provided inside the rubber rod (602); a reinforcing wall (6022) for supporting the rubber rod (602) is provided on one side of the inner wall of the rubber rod (602); a bending wall (6025) for bending the rubber rod (602) is provided on the other side of the inner wall of the rubber rod (602); a matching bending groove (6024) for matching bending is provided on the outer side of the reinforcing wall (6022); and a folding extension layer (6023) for matching extension is provided on the outer side of the bending wall (6025).

10. A circuit board clamping device for circuit board production according to claim 9, characterized in that: The buffer balls (603) are provided with air storage grooves (6031) on the inner sides, and folding storage films (6032) are respectively installed on both sides of the inner walls of the air storage grooves (6031). A connection reinforcement film (6033) is integrally arranged between the folding storage films (6032) on both sides, and an auxiliary support plate (6034) for assisting in lifting the circuit board is connected to the outer side of the connection reinforcement film (6033).

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