Exposure machine and circuit board clamping device

Abstract

The present invention discloses an exposure machine and a clamping device for a circuit board. The clamping device for the circuit board includes: a support member, on which a first guide channel and a second guide channel are provided; a telescopic member, on which a telescopic end is provided; a clamping member, which includes a connecting end and a clamping end that are relatively arranged; and a first transmission member, one end of the first transmission member is rotatably connected with the telescopic end and cooperates to form a first rotating structure, and the other end of the first transmission member is rotatably connected with the connecting end and cooperates to form a second rotating structure, and the first rotating structure can reciprocate along the length direction of the first guide channel, and the second rotating structure can reciprocate along the length direction of the second guide channel. The clamping device for the circuit board will not affect the exposure quality of the circuit board; in this way, the exposure quality of the exposure machine using the clamping device for the circuit board is high, and the production quality of the circuit board can be effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board clamping, and in particular to an exposure machine and a circuit board clamping device. Background Art

[0002] During the production process of circuit boards, in order to transfer the film pattern to the circuit board, the circuit board needs to be exposed. When exposing the circuit board, it is necessary to accurately position the circuit board, usually with the help of a clamping device to clamp and position the circuit board well. When the circuit board needs to be exposed, the traditional method is to use two transparent glass plates to clamp and position the entire circuit board and then transport the circuit board to the exposure device. The exposure light beam emitted by the exposure device passes through the glass and then exposes the exposed part. When there is foreign matter left on the glass or the glass is scratched, it will affect the exposure quality of the circuit board, and then affect the production quality of the circuit board. Summary of the invention

[0003] Based on this, an exposure machine and a clamping device for a circuit board are proposed, wherein the clamping device for the circuit board will not affect the exposure quality of the circuit board; thus, the exposure quality of the exposure machine using the clamping device for the circuit board is high, and the production quality of the circuit board can be effectively guaranteed.

[0004] The technical solution is as follows:

[0005] On the one hand, a clamping device for a circuit board is provided, comprising: a support member, on which a first guide channel and a second guide channel are arranged at intervals; a telescopic member, which is provided with a telescopic end; a clamping member, which comprises a connecting end and a clamping end arranged opposite to each other; and a first transmission member, one end of the first transmission member is rotatably connected to the telescopic end and cooperates to form a first rotating structure, the other end of the first transmission member is rotatably connected to the connecting end and cooperates to form a second rotating structure, and the first rotating structure can reciprocate along the length direction of the first guide channel, and the second rotating structure can reciprocate along the length direction of the second guide channel; wherein, when the telescopic end is extended to the first position, the first transmission member is arranged at an angle with the horizontal plane, and the clamping end is arranged opposite to the clamping table and cooperates to form a clamping portion for clamping the circuit board; when the telescopic end is retracted to the second position, the clamping end and the clamping table are staggered.

[0006] When the clamping device of the above-mentioned circuit board is used, one side of the circuit board is placed on the clamping table so that the telescopic end is extended. During the extension process of the telescopic end, the first rotating structure is pushed to move along the first guide channel of the support member toward the circuit board. Under the transmission of the first transmission member, the second rotating structure is also moved along the second guide channel of the support member toward the circuit board, thereby driving the clamping end of the clamping member to move toward the circuit board until the telescopic end is extended to the first position. At this time, the first transmission member is set at an angle to the horizontal plane, and the clamping end of the clamping member moves to the top of the clamping table and cooperates with the clamping table to form a clamping part for clamping the circuit board, so that one side of the circuit board can be clamped and positioned effectively and reliably, so that when the exposure device is used for exposure, it will not interfere with the exposure processing of the exposure part, will not affect the exposure quality of the circuit board, and ensure the exposure quality of the circuit board. When the exposure is completed, the telescopic end is retracted, and during the retracting process of the telescopic end, the first rotating structure is pulled to move along the first guide channel of the support member toward a direction away from the circuit board. Under the transmission of the first transmission member, the second rotating structure is also moved accordingly along the second guide channel of the support member toward a direction away from the circuit board, thereby driving the clamping end of the clamping member to move toward a direction away from the circuit board and then releasing the clamping of the circuit board until the telescopic end is retracted to the second position. At this time, the clamping end of the clamping member is staggered with the clamping table, so that one side of another circuit board can be placed on the clamping table again for the next clamping and positioning before exposure processing.

[0007] The technical solution is further described below:

[0008] In one embodiment, the clamping member is also provided with an abutment portion, which is arranged between the connecting end and the clamping end, and the abutment portion can reciprocate along the length direction of the first guide channel; when the telescopic member is extended toward the first position, the abutment portion applies an abutment force to the clamping member, so that the clamping end moves toward the direction close to the clamping platform.

[0009] In one embodiment, the support plate is provided with a first guide groove arranged along the telescopic direction of the telescopic end, and a second guide groove arranged along the clamping direction of the clamping end, and the first guide groove is connected with the second guide groove and cooperates to form the first guide channel.

[0010] In one embodiment, the first rotating structure can reciprocate along the length direction of the first guide groove, or the first rotating structure can reciprocate along the length direction of the first guide groove and the length direction of the second guide groove; the abutment portion can reciprocate along the length direction of the second guide groove, or the abutment portion can reciprocate along the length direction of the first guide groove and the length direction of the second guide groove.

[0011] In one embodiment, the clamping device of the circuit board also includes a second transmission member, one end of the second transmission member is rotationally connected to the telescopic end and cooperates to form a third rotating structure, the other end of the second transmission member is rotationally connected to the abutment portion and cooperates to form a fourth rotating structure, and the third rotating structure and the fourth rotating structure are both capable of reciprocating along the length direction of the first guide channel.

[0012] In one embodiment, the second guide channel includes a third guide groove arranged along the clamping direction of the clamping end, and the second rotating structure can reciprocate along the length direction of the third guide groove.

[0013] In one embodiment, the second guide channel also includes a fourth guide groove arranged along the telescopic direction of the telescopic end, the fourth guide groove is connected to the third guide groove and cooperates to form the second guide channel, and the second rotating structure can move back and forth along the length direction of the third guide groove and the length direction of the fourth guide groove.

[0014] In one embodiment, the clamping end is provided with a first clamping surface inclined relative to a horizontal plane, and the clamping platform is provided with a second clamping surface inclined relative to the horizontal plane, and the first clamping surface can cooperate with the second clamping surface to form the clamping portion.

[0015] In one embodiment, the clamping device of the circuit board also includes a base plate, and the two support members are arranged in a relative spacing and cooperate with the base plate to form an installation cavity, the telescopic member and the first transmission member are arranged in the installation cavity, and one end of the base plate extends out of the installation cavity and forms the clamping table for placing the circuit board; wherein, when the telescopic end is extended to a first position, the clamping end extends out of the installation cavity and is arranged in a relative spacing and cooperates with the clamping table to form the clamping portion; when the telescopic end is retracted to a second position, the clamping end is retracted into the installation cavity and is offset from the clamping table.

[0016] On the other hand, an exposure machine is provided, comprising an exposure device and the clamping device for the circuit board, wherein the exposure device is used to expose the circuit board clamped by the clamping device.

[0017] When the above-mentioned exposure machine is in use, one side of the circuit board is placed on the clamping table so that the telescopic end is extended. During the extension process of the telescopic end, the first rotating structure is pushed to move along the first guide channel of the support member toward the direction close to the circuit board. Under the transmission of the first transmission member, the second rotating structure is also moved along the second guide channel of the support member toward the direction close to the circuit board, thereby driving the clamping end of the clamping member to move toward the direction close to the circuit board until the telescopic end is extended to the first position. At this time, the first transmission member is set at an angle to the horizontal plane, and the clamping end of the clamping member moves to the top of the clamping table and cooperates with the clamping table to form a clamping part for clamping the circuit board, so that one side of the circuit board can be clamped and positioned effectively and reliably, so that when the exposure device is used for exposure, the exposure processing of the exposure part will not be interfered with, the exposure quality of the circuit board will not be affected, the exposure quality of the circuit board is guaranteed, and then the production quality of the circuit board is guaranteed. When the exposure is completed, the telescopic end is retracted, and during the retracting process of the telescopic end, the first rotating structure is pulled to move along the first guide channel of the support member toward a direction away from the circuit board. Under the transmission of the first transmission member, the second rotating structure is also moved accordingly along the second guide channel of the support member toward a direction away from the circuit board, thereby driving the clamping end of the clamping member to move toward a direction away from the circuit board and then releasing the clamping of the circuit board until the telescopic end is retracted to the second position. At this time, the clamping end of the clamping member is staggered with the clamping table, so that one side of another circuit board can be placed on the clamping table again for the next clamping and positioning before exposure processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a circuit board clamping device according to an embodiment when the telescopic end is extended to a first position;

[0019] Figure 2 for Figure 1 A schematic structural diagram of a circuit board clamping device;

[0020] Figure 3 for Figure 1 A schematic structural diagram of the circuit board when the telescopic end of the clamping device is retracted to the second position;

[0021] Figure 4 for Figure 3 A schematic structural diagram of a circuit board clamping device;

[0022] Figure 5 It is a structural schematic diagram of another embodiment of a circuit board clamping device when the telescopic end is extended to a first position;

[0023] Figure 6 for Figure 5 A schematic structural diagram of a circuit board clamping device;

[0024] Figure 7 for Figure 5 A schematic structural diagram of the circuit board when the telescopic end of the clamping device is retracted to the second position;

[0025] Figure 8 for Figure 7 A schematic structural diagram of a circuit board clamping device;

[0026] Fig. 9 for Figure 1 A force diagram of a circuit board clamping device according to an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 10. Clamping device for circuit board, 100. Support member, 110. First guide channel, 111. First guide groove, 112. Second guide groove, 120. Second guide channel, 121. Third guide groove, 122. Fourth guide groove, 200. Telescopic member, 210. Telescopic end, 300. Clamping member, 310. Connecting end, 320. Clamping end, 321. First clamping surface, 400. First transmission member, 410. First rotating structure, 420. Second rotating structure, 500. Bottom plate, 510. Clamping table, 511. Second clamping surface, 600. Abutment portion, 700. Pad, 800. Mounting cavity. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0030] It should be noted that when an element is referred to as being "disposed on" or "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is referred to as being "fixed on" another element, or being "fixedly connected" to another element, they may be fixed in a detachable manner or in a non-detachable manner. When an element is considered to be "connected" or "rotatably connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to restrict the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The terms "first", "second", "third" and the like in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0033] like Figures 1 to 4 As shown, in one embodiment, a clamping device 10 for a circuit board is disclosed, comprising: a support member 100, on which a first guide channel 110 and a second guide channel 120 are arranged at intervals; a telescopic member 200, the telescopic member 200 is provided with a telescopic end 210; a clamping member 300, the clamping member 300 includes a connecting end 310 and a clamping end 320 arranged opposite to each other; and a first transmission member 400, one end of the first transmission member 400 is rotatably connected to the telescopic end 210 and cooperates to form a first rotating structure 410, and the other end of the first transmission member 400 is connected to the connecting end 310 are rotatably connected and cooperate to form a second rotating structure 420, and the first rotating structure 410 can reciprocate along the length direction of the first guide channel 110, and the second rotating structure 420 can reciprocate along the length direction of the second guide channel 120; wherein, when the telescopic end 210 is extended to the first position, the first transmission member 400 is set at an angle with the horizontal plane, and the clamping end 320 and the clamping platform 510 are arranged opposite to each other and cooperate to form a clamping portion for clamping the circuit board; when the telescopic end 210 is contracted to the second position, the clamping end 320 and the clamping platform 510 are staggered.

[0034] When the circuit board clamping device 10 of the above embodiment is used, one side of the circuit board is placed on the clamping platform 510, so that the telescopic end 210 is extended. During the extension process of the telescopic end 210, the first rotating structure 410 is pushed to move along the first guide channel 110 of the support member 100 toward the circuit board. Under the transmission of the first transmission member 400, the second rotating structure 420 is also moved along the second guide channel 120 of the support member 100 toward the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move. Move toward the direction approaching the circuit board until the telescopic end 210 extends to the first position. At this time, the first transmission member 400 is set at an angle with the horizontal plane, and the clamping end 320 of the clamping member 300 moves to the top of the clamping platform 510 and cooperates with the clamping platform 510 to form a clamping part for clamping the circuit board, so that one side of the circuit board can be clamped and positioned effectively and reliably, so that when the exposure device is used for exposure, it will not interfere with the exposure processing of the exposure part, will not affect the exposure quality of the circuit board, and ensure the exposure quality of the circuit board. When the exposure is completed, the telescopic end 210 is retracted. During the retraction process of the telescopic end 210, the first rotating structure 410 is pulled to move along the first guide channel 110 of the support member 100 toward a direction away from the circuit board. Under the transmission of the first transmission member 400, the second rotating structure 420 is also moved along the second guide channel 120 of the support member 100 toward a direction away from the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move away from the circuit board and then release the clamping of the circuit board until the telescopic end 210 is retracted to the second position. At this time, the clamping end 320 of the clamping member 300 is staggered with the clamping table 510, so that one side of another circuit board can be placed on the clamping table 510 again for the next clamping and positioning before exposure processing.

[0035] The support member 100 is preferably a support plate, which is convenient for opening the first guide channel 110 and the second guide channel 120 on the support plate according to a preset trajectory, and is easy to process. The first transmission member 400 can be a transmission rod, a transmission shaft or other element that can transmit the force of the telescopic end 210 to the clamping member 300 so that the clamping member 300 clamps the circuit board. The telescopic member 200 can be a telescopic rod driven by a hydraulic cylinder or a cylinder, or a gear-driven rack, as long as it can achieve telescopic reciprocating motion.

[0036] The rotational connection between one end of the first transmission member 400 and the telescopic end 210 can be achieved by the rotational cooperation between the first rotating shaft and the inner wall of the corresponding first connecting hole after corresponding first connecting holes are provided on one end of the first transmission member 400 and the telescopic end 210; at the same time, it can also be achieved by adding an intermediate element such as a corresponding transmission block between one end of the first transmission member 400 and the telescopic end 210; it is only necessary that the first rotating structure 410 can smoothly reciprocate along the length direction of the first guide channel 110 under the action of the telescopic member 200, and at the same time, the first transmission member 400 can smoothly rotate around the rotation axis relative to the telescopic member 200 (such as Figure 2 The first transmission member 400 can be rotated in the direction of rotation as shown in the rotation direction of the first transmission member 400 without interfering with the movement of the first transmission member 400. When one end of the first transmission member 400 and the telescopic end 210 are rotatably connected in the form of a first rotating shaft and a first connecting hole, in order to enable the first rotating structure 410 to smoothly reciprocate along the length direction of the first guide channel 110, bearings, rollers and other rotating bodies can be added to both ends of the first rotating shaft, and the bearings, rollers and other rotating bodies are arranged in the first guide channel 110. In this way, not only can the first rotating shaft be supported, but also the friction between the first rotating shaft and the support member 100 can be reduced, so that the movement of the first rotating structure 410 is more labor-saving and smooth.

[0037] The rotational connection between the other end of the first transmission member 400 and the connecting end 310 can be achieved by the rotational cooperation between the second rotating shaft and the inner wall of the corresponding second connecting hole after the corresponding second connecting holes are provided on the other end of the first transmission member 400 and the connecting end 310; at the same time, it can also be achieved by adding a corresponding hinge or other intermediate element between the other end of the first transmission member 400 and the connecting end 310; it is only necessary that the second rotating structure 420 can smoothly reciprocate along the length direction of the second guide channel 120 under the action of the first transmission member 400, and at the same time, the first transmission member 400 can smoothly rotate around the rotation axis relative to the clamping member 300 (such as Figure 2 The rotation direction is shown) without interfering with the movement of the first transmission member 400. When the other end of the first transmission member 400 and the connecting end 310 are rotatably connected in the form of a second rotating shaft and a second connecting hole, in order to enable the second rotating structure 420 to smoothly reciprocate along the length direction of the second guide channel 120, bearings, rollers and other rotating bodies can be added to both ends of the second rotating shaft, and the bearings, rollers and other rotating bodies are arranged in the second guide channel 120. In this way, not only can the second rotating shaft be supported, but also the friction between the second rotating shaft and the support member 100 can be reduced, so that the movement of the second rotating structure 420 is more labor-saving and smooth.

[0038] like Figure 2 and Figure 6As shown, when the telescopic end 210 is extended to the first position, the first transmission member 400 is set at an angle to the horizontal plane, and the clamping end 320 of the clamping member 300 moves to the top of the clamping platform 510 and cooperates with the clamping platform 510 to form a clamping portion for clamping the circuit board. At this time, the thrust of the telescopic member 200 is transmitted through the first transmission member 400 and acts on the clamping member 300, so that the clamping end 320 applies pressure to the circuit board, and combined with the supporting force of the clamping platform 510, the side of the circuit board is reliably clamped.

[0039] like Figure 2 , Figure 4 , Figure 6 and Figure 8 As shown, in one embodiment, the clamping member 300 is further provided with an abutment portion 600 , and the abutment portion 600 can reciprocate along the length direction of the first guide channel 110 ; when the telescopic member 200 is extended toward the first position, the abutment portion 600 applies an abutment force to the clamping member 300 . In this way, during the extension and pushing process of the telescopic end 210, the first rotating structure 410 moves along the first guide channel 110 of the support member 100 toward the direction close to the circuit board, and the second rotating structure 420 also moves accordingly along the second guide channel 120 of the support member 100 toward the direction close to the circuit board. The clamping end 320 of the clamping member 300 moves toward the direction close to the circuit board. At the same time, the abutment part 600 is used to apply an abutment force to the clamping member 300, which not only prevents the clamping end 320 of the clamping member 300 from rotating around the rotation axis of the second rotating structure 420, ensuring that the clamping end 320 reliably moves toward the direction close to the clamping platform 510, but also can effectively ensure the pressure applied to the circuit board by the clamping end 320, ensuring that the clamping part can reliably clamp and position the circuit board, and avoid the problem of the circuit board falling off due to insufficient clamping force. The abutment portion 600 is arranged near the clamping end 320 relative to the connection end 310, so that the torque applied by the abutment portion 600 to the clamping member 300 is large enough to effectively overcome the problem of the clamping end 320 tilting relative to the clamping platform 510, further ensuring the clamping strength.

[0040] like Figure 2 and Figure 4 As shown, in one embodiment, the abutment portion 600 includes an abutment rod, one end of which is connected to the clamping member 300, and the other end of the abutment rod is provided with a first through hole, and the third shaft passes through the first through hole, so that the other end of the abutment rod can rotate around the central axis of the third shaft (such as Figure 2The third rotating shaft extends into the first guide channel 110, and the third rotating shaft can reciprocate along the first guide channel 110. Furthermore, in order to ensure that the third rotating shaft can smoothly move along the length direction of the first guide channel 110, bearings, rollers and other rotating bodies can be added at both ends of the third rotating shaft, and the bearings, rollers and other rotating bodies are arranged in the first guide channel 110. In this way, not only can the third rotating shaft be supported, but also the friction between the third rotating shaft and the support member 100 can be reduced, so that the movement of the abutting portion 600 is more labor-saving and smooth.

[0041] like Figure 6 and Figure 8 As shown, in one embodiment, the abutment portion 600 includes a second through hole provided on the clamping member 300 and a fourth rotating shaft passing through the second through hole, so that the clamping member 300 can rotate around the central axis of the fourth rotating shaft, the fourth rotating shaft extends into the first guide channel 110, and the fourth rotating shaft can reciprocate along the first guide channel 110. Further, in order to ensure that the fourth rotating shaft can smoothly move along the length direction of the first guide channel 110, bearings, rollers and other rotating bodies can be added at both ends of the fourth rotating shaft, and the bearings, rollers and other rotating bodies are arranged in the first guide channel 110. In this way, not only can the fourth rotating shaft be supported, but also the friction between the fourth rotating shaft and the support member 100 can be reduced, so that the movement of the abutment portion 600 is more labor-saving and smooth.

[0042] like Figure 2 and Fig. 9As shown, in one embodiment, F1 is the thrust when the telescopic end 210 is extended to the first position, F2 is the force received by the first transmission member 400 at point A, F2' is the force applied by the first transmission member 400 to the first rotating shaft at point A, F1, F2' and F5 are balanced at point A, F3 is the reaction force of the second rotating shaft received by the first transmission member 400 at point B, F4 is the component force of F3 in the vertical direction, F3' is the pressure of the second rotating shaft applied by the first transmission member 400 at point B, and F4' is the vertical pressure of the clamping member 300. F5 is the pressure of the support member 100 on the first rotating shaft at point A, F6 is the reaction force applied by the clamping platform 510 to the clamping member 300, F7 is the force exerted on the abutment portion 600 at point D, L1 is the projection length of the telescopic end 210 in the vertical direction when it is extended to the first position, L2 is the projection length of the telescopic end 210 in the horizontal direction when it is extended to the first position, L3 is the distance between point B and point C in the horizontal direction, L4 is the distance between point B and point C in the vertical direction, and L5 is the distance between point B and point C in the vertical direction. When the telescopic end 210 is extended to the first position, the angle between the first transmission member 400 and the horizontal plane is θ; wherein F2=F3; F5*L2-F1*L1=0; L2 / L1=cosθ; F2=F5sinθ; F4=F3sinθ, therefore F4=F1*(sinθ)^2 / cosθ, for example, when the telescopic member 200 is a cylinder, if the air pressure of the cylinder is P=0.6Mpa, the cylinder ACES16mm×40mm (cylinder inner diameter 16mm, stroke 40 mm), the output force F1=PS=0.6*10^6*3.14*(16*10^-3)^2 / 4=121N, if θ=84°, then F4=1145N, and -F7*L4+F6*L3=0; F4'*L3-F7*L5=0; F4=F4', if L4=30mm, L5=32mm, then F6=L4 / L5*F4=30 / 32*1145=1073N, that is, the clamping force F6 applied by the clamping member 300 to the circuit board is 1073N.

[0043] It should be noted that when the telescopic end 210 is extended to the first position and the angle θ (θ is greater than 0° and less than 90°) between the first transmission member 400 and the horizontal plane changes, the clamping force F6 applied to the circuit board by the clamping member 300 also changes accordingly, as shown in the following table. In this way, when θ approaches 90°, the clamping force F6 applied to the circuit board by the clamping member 300 becomes larger accordingly, thereby being able to achieve stable clamping of the circuit board.

[0044] θ 85° 86° 87° 88° 89° 89.5° 90° F6 1292N 1618N 2162N 3246N 6497N 12998N 0N

[0045] like Figure 4As shown, in one embodiment, the support plate is provided with a first guide groove 111 arranged along the telescopic direction of the telescopic end 210, and a second guide groove 112 arranged along the clamping direction of the clamping end 320, and the first guide groove 111 is connected with the second guide groove 112 and cooperates to form a first guide channel 110. In this way, during the extension process of the telescopic end 210, the first rotating structure 410 can be driven to move smoothly along the length direction of the first guide channel 110, avoiding interference in the extension movement of the telescopic member 200, thereby driving the clamping end 320 of the clamping member 300 to move along the clamping direction, and then clamping the circuit board. The first guide groove 111 can be opened in the horizontal direction, or can be opened at an angle relative to the horizontal plane; the opening direction of the second guide groove 112 can be in the vertical direction. The transition part between the first guide groove 111 and the second guide groove 112 can be in the form of a right angle, or in the form of an arc transition.

[0046] In one embodiment, the first rotating structure 410 can reciprocate along the length direction of the first guide slot 111. In this way, since the opening direction of the first guide slot 111 is consistent with the extension direction of the telescopic end 210, the telescopic end 210 can smoothly drive the first rotating structure 410 to reciprocate along the length direction of the first guide slot 111 during the extension process, and then under the transmission of the first transmission member 400, the second rotating structure 420 also moves along the second guide channel 120 of the support member 100 toward the direction close to the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move toward the direction close to the circuit board until the circuit board is clamped by the clamping portion.

[0047] In one embodiment, the first rotating structure 410 can reciprocate along the length direction of the first guide groove 111 and the length direction of the second guide groove 112. In this way, during the extension process of the telescopic end 210, the first rotating structure 410 is first driven to move along the length direction of the first guide groove 111. As the extension continues, the first rotating structure 410 moves into the second guide groove 112 and moves along the length direction of the second guide groove 112. Then, under the transmission of the first transmission member 400, the second rotating structure 420 is also moved along the second guide channel 120 of the support member 100 toward the direction close to the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move toward the direction close to the circuit board until the circuit board is clamped by the clamping portion.

[0048] In one embodiment, the abutment portion 600 can reciprocate along the length direction of the second guide groove 112. In this way, since the opening direction of the second guide groove 112 is consistent with the clamping direction of the clamping end 320, during the extension of the telescopic end 210, the first rotating structure 410 moves along the first guide channel 110 of the support member 100 toward the direction close to the circuit board, and the second rotating structure 420 also moves along the second guide channel 120 of the support member 100 toward the direction close to the circuit board, and the abutment portion 600 moves along the clamping direction and applies abutment force to the clamping member 300, thereby ensuring that the clamping member 300 will not flip during the movement process and ensuring that the clamping member 300 has sufficient clamping force.

[0049] In one embodiment, the abutment portion 600 can reciprocate along the length direction of the first guide groove 111 and the length direction of the second guide groove 112. In this way, during the extension process of the telescopic end 210, the abutment portion 600 is driven to move along the length direction of the first guide groove 111 first, and as the extension continues, the abutment portion 600 moves into the second guide groove 112 and moves along the length direction of the second guide groove 112, thereby applying an abutment force to the clamping member 300, thereby ensuring that the clamping member 300 will not flip during the movement process, and also ensuring that the clamping member 300 has sufficient clamping force.

[0050] In one embodiment, the clamping device 10 of the circuit board further includes a second transmission member (not shown), one end of the second transmission member is rotationally connected with the telescopic end 210 and cooperates to form a third rotation structure, the other end of the second transmission member is rotationally connected with the abutment portion 600 and cooperates to form a fourth rotation structure, and the third rotation structure and the fourth rotation structure can both reciprocate along the length direction of the first guide channel 110. In this way, during the extension of the telescopic end 210, the third rotation structure and the fourth rotation structure can both move along the length direction of the first guide channel 110, and the first transmission member 400 and the second transmission member can better transmit the extension movement of the telescopic member 200 to the clamping member 300, so that the clamping member 300 can move to cooperate with the clamping platform 510 to form a clamping portion, and then use the clamping portion to clamp the circuit board. In order to avoid interference between the movement of the first transmission member 400 and the second transmission member, the length of the first transmission member 400 and the second transmission member can be adaptively adjusted, as long as it is satisfied that the movement is smooth and the force transmission can be ensured when the telescopic member 200 is extended.

[0051] like Figure 4 and Figure 8As shown, on the basis of any of the above embodiments, the second guide channel 120 includes a third guide groove 121 arranged along the clamping direction of the clamping end 320, and the second rotating structure 420 can reciprocate along the length direction of the third guide groove 121. In this way, during the telescopic process of the telescopic member 200, the first rotating structure 410 moves along the first guide channel 110 of the support member 100 toward the direction close to the circuit board, and under the transmission of the first transmission member 400, the second rotating structure 420 moves along the length direction of the third guide groove 121 accordingly, thereby being able to drive the clamping end 320 of the clamping member 300 to move toward the direction close to the circuit board, until the clamping end 320 cooperates with the clamping platform 510 to form a clamping portion, and the clamping portion is used to stably and reliably clamp the circuit board. The third guide groove 121 can be opened in the vertical direction, and the opening direction of the third guide groove 121 can be parallel to the opening direction of the second guide groove 112.

[0052] like Figure 4 , Figure 6 and Figure 8 As shown, in one embodiment, the second guide channel 120 also includes a fourth guide groove 122 arranged along the telescopic direction of the telescopic end 210, and the fourth guide groove 122 is connected to the third guide groove 121 and cooperates to form the second guide channel 120, and the second rotating structure 420 can move back and forth along the length direction of the third guide groove 121 and the length direction of the fourth guide groove 122. Thus, during the contraction of the telescopic end 210, the first rotating structure 410 moves along the first guide channel 110 of the support member 100 in a direction away from the circuit board. Under the transmission of the first transmission member 400, the second rotating structure 420 moves away from the circuit board along the length direction of the third guide groove 121 until the second rotating structure 420 moves to the fourth guide groove 122. As the contraction continues, the second rotating structure 420 moves further away from the circuit board along the length direction of the fourth guide groove 122, thereby driving the clamping end 320 of the clamping member 300 to move away from the circuit board and then release the clamping of the circuit board, so that the clamping end 320 of the clamping member 300 is offset from the clamping platform 510 by a sufficiently large position, so that one side of another circuit board can be placed on the clamping platform 510 again for the next clamping and positioning before exposure. The fourth guide groove 122 can be opened in the horizontal direction or can be opened inclined relative to the horizontal plane. The opening direction of the fourth guide groove 122 can be parallel to the opening direction of the first guide groove 111. The transition portion between the third guide groove 121 and the fourth guide groove 122 may be in the form of a right angle or in the form of an arc transition.

[0053] On the basis of any of the above embodiments, the clamping end 320 is arranged near the first guide channel 110 relative to the connecting end 310. In this way, the clamping portion formed by the clamping end 320 and the clamping platform 510 has a larger clamping space and a higher clamping height, which can meet the clamping and positioning requirements of different circuit boards; for example, the first guide channel 110 is arranged above the second guide channel 120, and when the telescopic end 210 is extended to the first position, the clamping member 300 is arranged tilted relative to the horizontal plane, and the distance from the horizontal plane increases along the direction from the connecting end 310 to the clamping end 320. At this time, the clamping end 320 is arranged above the connecting end 310, and the clamping end 320 is arranged closer to the first guide channel 110 relative to the connecting end 310. Figure 5 , Figure 7 and Figure 8 As shown, further, the clamping device 10 for the circuit board also includes a pad block 700, which is arranged on the clamping platform 510. When the telescopic end 210 is extended to the first position, the first transmission member 400 is arranged at an angle with the horizontal plane, and the clamping end 320 and the pad block 700 are arranged opposite to each other and cooperate to form a clamping portion for clamping the circuit board. In this way, one side of the circuit board is placed on the pad 700, and then the telescopic end 210 is extended, thereby pushing the first rotating structure 410 to move along the first guide channel 110 toward the circuit board. Under the conduction of the first transmission member 400, the second rotating structure 420 also moves along the second guide channel 120 toward the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move toward the circuit board until the telescopic end 210 is extended to the first position. At this time, the first transmission member 400 is set at an angle to the horizontal plane, and the clamping end 320 of the clamping member 300 moves to the top of the pad 700 and cooperates with the pad 700 to form a clamping portion for clamping the circuit board, so that one side of the circuit board can be clamped and positioned effectively and reliably.

[0054] like Figure 4As shown, on the basis of any of the above embodiments, the clamping end 320 is provided with a first clamping surface 321 inclined relative to the horizontal plane, and the clamping platform 510 is provided with a second clamping surface 511 inclined relative to the horizontal plane, and the first clamping surface 321 can cooperate with the second clamping surface 511 to form a clamping portion. In this way, when the clamping portion formed by the first clamping surface 321 and the second clamping surface 511 clamps the circuit board, the circuit board can be tightly clamped and is not easy to fall off from the clamping portion, thereby ensuring the stability and reliability of the clamping. Of course, in other embodiments, the first clamping surface 321 and the second clamping surface 511 can also be arranged parallel to the horizontal plane; at the same time, in order to further enhance the stability and reliability of the clamping, an anti-slip structure can also be arranged on the first clamping surface 321 and / or the second clamping surface 511, for example, an anti-slip pattern or an anti-slip pad can be added to ensure that there is no slipping after clamping. The angle at which the first clamping surface 321 is inclined relative to the horizontal plane can be -30° to 30°, for example, -30° or 30°. Of course, in other embodiments, the first clamping surface 321 may also be arranged parallel to the horizontal plane, that is, the angle between the first clamping surface 321 and the horizontal plane is 0°.

[0055] On the basis of any of the above embodiments, the telescopic member 200 is tilted relative to the horizontal plane, and the distance between the telescopic member 200 and the horizontal plane increases in the direction close to the first transmission member 400. In this way, the telescopic member 200 can be arranged reasonably, saving the working space of the telescopic member 200, thereby reducing the volume of the clamping device 10 of the circuit board, making the structure of the clamping device 10 of the entire circuit board more compact and adapting to the demand for miniaturization. For example, when the telescopic member 200 is a telescopic rod driven by a cylinder, the cylinder body of the cylinder can be tilted relative to the horizontal plane, so that the telescopic rod is tilted relative to the horizontal plane, and the tilt of the cylinder body can be achieved by the tilting setting of the pad, and the cylinder body can be installed on the pad.

[0056] like Figure 1 , Figure 3 , Figure 5 and Figure 7As shown, on the basis of any of the above embodiments, the clamping device 10 of the circuit board further includes a bottom plate 500, two support members 100 are provided, the two support members 100 are arranged at a relative interval and cooperate with the bottom plate 500 to form an installation cavity 800, the telescopic member 200 and the first transmission member 400 are arranged in the installation cavity 800, and one end of the bottom plate 500 extends out of the installation cavity 800 to form a clamping platform 510 for placing the circuit board; wherein, when the telescopic end 210 is extended to the first position, the clamping end 320 extends out of the installation cavity 800 and is arranged at a relative interval with the clamping platform 510 and cooperates to form a clamping portion; when the telescopic end 210 is retracted to the second position, the clamping end 320 is retracted into the installation cavity 800 and is misaligned with the clamping platform 510. In this way, the telescopic member 200, the first transmission member 400 and the related accessory parts such as the rotating shaft and the pad are installed in the installation cavity 800, which can prevent foreign matter from interfering with the normal operation of the clamping device 10 of the circuit board. At the same time, during the extension of the telescopic end 210, the clamping end 320 extends out of the installation cavity 800 and cooperates with the clamping platform 510 of the bottom plate 500 to form a clamping portion, so that the circuit board can be clamped; during the contraction of the telescopic end 210, the clamping end 320 retracts into the installation cavity 800, so that the circuit board can be smoothly placed on the clamping platform 510 of the bottom plate 500, and when the circuit board is placed on the clamping platform 510 of the bottom plate 500, the sides of the two support members 100 can also position the circuit board to ensure accurate placement. The two support members 100 can also form a strong support for the first rotating structure 410, the second rotating structure 420 and the third rotating structure.

[0057] In one embodiment, an exposure machine is also disclosed, including an exposure device and a circuit board clamping device 10 according to any of the above embodiments, wherein the exposure device is used to expose the circuit board clamped by the clamping device.

[0058] When the exposure machine of the above embodiment is used, one side of the circuit board is placed on the clamping table 510, so that the telescopic end 210 is extended. During the extension process of the telescopic end 210, the first rotating structure 410 is pushed to move along the first guide channel 110 of the support member 100 toward the direction close to the circuit board. Under the transmission of the first transmission member 400, the second rotating structure 420 is also correspondingly moved along the second guide channel 120 of the support member 100 toward the direction close to the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move toward the direction close to the circuit board. The telescopic end 210 is moved until it is extended to the first position. At this time, the first transmission member 400 is set at an angle to the horizontal plane, and the clamping end 320 of the clamping member 300 moves to the top of the clamping platform 510 and cooperates with the clamping platform 510 to form a clamping portion for clamping the circuit board, so that one side of the circuit board can be clamped and positioned effectively and reliably, so that when the exposure device is used for exposure, the exposure processing of the exposure part will not be interfered with, the exposure quality of the circuit board will not be affected, the exposure quality of the circuit board is guaranteed, and the production quality of the circuit board is guaranteed. When the exposure is completed, the telescopic end 210 is retracted. During the retraction process of the telescopic end 210, the first rotating structure 410 is pulled to move along the first guide channel 110 of the support member 100 toward a direction away from the circuit board. Under the transmission of the first transmission member 400, the second rotating structure 420 is also moved along the second guide channel 120 of the support member 100 toward a direction away from the circuit board, thereby driving the clamping end 320 of the clamping member 300 to move away from the circuit board and then release the clamping of the circuit board until the telescopic end 210 is retracted to the second position. At this time, the clamping end 320 of the clamping member 300 is staggered with the clamping table 510, so that one side of another circuit board can be placed on the clamping table 510 again for the next clamping and positioning before exposure processing.

[0059] It should be noted that the exposure device can be an exposure head, an exposure device or other device or instrument capable of performing exposure processing on the circuit board. The circuit board clamping device 10 can be provided with at least two, and at least two circuit board clamping devices 10 are evenly arranged along the circumference of the circuit board, so that the circuit board is subjected to a uniform clamping force, and the positioning is more balanced and accurate.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as restrictions on the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A circuit board clamping device, characterized in that: include: A support member, wherein the support member is provided with a first guide channel and a second guide channel which are spaced apart from each other; A telescopic member, wherein the telescopic member is provided with a telescopic end and the telescopic member is arranged obliquely relative to a horizontal plane; A clamping member, the clamping member comprising a connecting end and a clamping end arranged opposite to each other; and a first transmission member, one end of which is rotatably connected to the telescopic end and cooperates to form a first rotating structure, the other end of which is rotatably connected to the connecting end and cooperates to form a second rotating structure, and the first rotating structure can reciprocate along the length direction of the first guide channel, and the second rotating structure can reciprocate along the length direction of the second guide channel; Wherein, when the telescopic end is extended to the first position, the first transmission member is arranged at an angle with the horizontal plane, and the clamping end and the clamping platform are arranged opposite to each other and cooperate to form a clamping portion for clamping the circuit board; when the telescopic end is retracted to the second position, the clamping end and the clamping platform are arranged in a staggered manner; The clamping member is further provided with an abutment portion, which is arranged between the connecting end and the clamping end, and can reciprocate along the length direction of the first guide channel; when the telescopic member is extended toward the first position, the abutment portion applies an abutment force to the clamping member, so that the clamping end moves toward the direction close to the clamping platform; The support member is provided with a first guide groove arranged along the telescopic direction of the telescopic end, and a second guide groove arranged along the clamping direction of the clamping end, the first guide groove is connected with the second guide groove and cooperates to form the first guide channel; The first rotating structure can reciprocate along the length direction of the first guide groove, or the first rotating structure can reciprocate along the length direction of the first guide groove and the length direction of the second guide groove; the abutment portion can reciprocate along the length direction of the second guide groove, or the abutment portion can reciprocate along the length direction of the first guide groove and the length direction of the second guide groove.

2. The circuit board clamping device according to claim 1, characterized in that: It also includes a second transmission member, one end of which is rotatably connected to the telescopic end and cooperates to form a third rotating structure, and the other end of the second transmission member is rotatably connected to the abutment portion and cooperates to form a fourth rotating structure, and the third rotating structure and the fourth rotating structure can both move back and forth along the length direction of the first guide channel.

3. The circuit board clamping device according to any one of claims 1 to 2, characterized in that: The second guide channel includes a third guide groove arranged along the clamping direction of the clamping end, and the second rotating structure can reciprocate along the length direction of the third guide groove.

4. The circuit board clamping device according to claim 3, characterized in that: The second guide channel also includes a fourth guide groove arranged along the telescopic direction of the telescopic end, the fourth guide groove is connected to the third guide groove and cooperates to form the second guide channel, and the second rotating structure can reciprocate along the length direction of the third guide groove and the length direction of the fourth guide groove.

5. The circuit board clamping device according to any one of claims 1 to 2, characterized in that: The clamping end is provided with a first clamping surface inclined relative to a horizontal plane, and the clamping platform is provided with a second clamping surface inclined relative to the horizontal plane. The first clamping surface can cooperate with the second clamping surface to form the clamping portion.

6. The circuit board clamping device according to any one of claims 1 to 2, characterized in that: It also includes a base plate, and the support members are provided in two, and the two support members are arranged at a relative interval and cooperate with the base plate to form an installation cavity, the telescopic member and the first transmission member are arranged in the installation cavity, and one end of the base plate extends out of the installation cavity and forms the clamping table for placing the circuit board; wherein, when the telescopic end is extended to the first position, the clamping end extends out of the installation cavity and is arranged at a relative interval with the clamping table and cooperates to form the clamping part; when the telescopic end is retracted to the second position, the clamping end is retracted into the installation cavity and is offset from the clamping table.

7. An exposure machine, characterized in that: The invention comprises an exposure device and a circuit board clamping device as claimed in any one of claims 1 to 6, wherein the exposure device is used to expose the circuit board clamped by the clamping device.

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