Sheet hanging and clamping device assembly

Abstract

The utility model relates to the technical field of clamps, and discloses a thin plate hanging and clamping assembly which comprises at least two thin plate hanging and clamping devices arranged side by side, each thin plate hanging and clamping device comprises a supporting frame, and each supporting frame is provided with a clamp installation part and hanging installation parts located on the two sides of the clamp installation part. The clamp installation part is provided with at least one hanging clamp used for clamping a thin plate, the supporting frame is connected with limiting pieces, and the limiting pieces of the adjacent thin plate hanging clamp device form a limiting structure for limiting the clamped thin plate from swinging. In the PCB printing process, the situation that adjacent PCBs make contact with one another, and consequently scratching or ink adhesion is caused can be avoided, and then the quality of finished PCBs is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a thin plate hanging clamp device component. Background Art

[0002] As disclosed in CN 108738242 B, the PCB board printing process includes: placing the PCB circuit board into the circuit board printer, the feeding platform transports the PCB circuit board to the position of the silk screen component of the circuit board printer, printing the PCB circuit board, discharging the material through the discharging device after printing, and drying the printed surface of the PCB circuit board with a UV lamp during the discharging process. The discharging device transports the PCB circuit board to the transmission wheel of the flipping machine, the distance detector detects the position of the PCB circuit board, and controls the transmission wheel to stop rotating when the PCB circuit board reaches the specified position, the clamping part bites and clamps the PCB circuit board, the transmission platform descends to make enough space for the PCB circuit board to flip, the rotating motor works, flips the PCB circuit board 180°, and then the transmission platform moves upward to reset, the clamping part releases the PCB circuit board, the transmission wheel continues to rotate, and the PCB circuit board is transferred to the second circuit printer. After the second side of the PCB circuit board is printed, it enters the drying machine.

[0003] Among them, the drying process plays a vital role in the PCB board printing process. For example, CN113682951U discloses a hanging clamp device, including a support frame, a lifting drive mechanism arranged on the support frame, a push-pull assembly connected to the lifting drive mechanism, and a hanging clamp mounting frame arranged below the push-pull assembly, wherein at least one clamp is provided on the hanging clamp mounting frame; the push-pull assembly includes a lifting plate, and a push-pull block arranged at the bottom of the lifting plate and corresponding to the clamp; the lifting drive mechanism includes a lifting drive cylinder fixed on the support frame, and a vertical output shaft connected to the lifting drive cylinder, and the lifting plate is connected to the vertical output shaft; at least one vertical guide mechanism is provided between the lifting plate and the support frame, and the vertical guide mechanism includes a vertical slide rail arranged on the support frame, and a slider slidably arranged on the vertical slide rail, and the slider is fixedly connected to the lifting plate. The hanging clamp device can move the push-pull assembly in the vertical direction, adjust the push-pull block to an appropriate position, and then control the clamping or releasing operation of the clamp arranged on the hanging clamp mounting frame. The device can control the taking and placing of multiple clamps at the same time.

[0004] However, when printing elastic PCB boards, the above-mentioned hanging clamping device can only hang one PCB board and move it on the transport device. During the transfer process, the PCB boards clamped by two adjacent hanging clamping devices are prone to contact, resulting in ink adhesion. This situation is generally avoided by increasing the distance between adjacent hanging clamping devices. However, as the size of the PCB board to be clamped increases, the distance between adjacent hanging clamping devices also increases, so that the space utilization rate of the drying device is reduced and the drying efficiency is also reduced. Utility Model Content

[0005] The purpose of the utility model is to overcome the problem in the prior art that the plates clamped by two adjacent hanging clamps are prone to contact during the transfer process, especially when the PCB board is hung and clamped, which leads to ink adhesion. A thin plate hanging clamp assembly is provided, which can avoid contact between adjacent thin plates during transportation.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a thin plate hanging clamp assembly, which includes at least two thin plate hanging clamp devices arranged in parallel, and the thin plate hanging clamp device includes a support frame, the support frame is provided with a clamp mounting portion and a suspension mounting portion located on both sides of the clamp mounting portion, the clamp mounting portion is provided with at least one hanging clamp for clamping the thin plate, the support frame is connected with a limiting piece, and the limiting pieces of adjacent thin plate hanging clamp devices are close to each other to form a limiting structure for limiting the swing of the clamped thin plate.

[0007] Optionally, arm mounting sections are provided at both ends of the support frame, and the arm mounting sections at each end are rotatably connected to an arm structure provided with the limiting member, and the arm structures at both ends rotate close to each other to jointly limit two sides of the clamped thin plate.

[0008] Optionally, the arm structure includes a fixed arm fixedly connected to the arm mounting section and a rotating arm hinged to the fixed arm.

[0009] Optionally, a limiting piece is connected to the bottom end of the rotating arm, and the rotating arm has a bending section.

[0010] Optionally, the limiting member includes a long side and a short side, and the limiting members of two adjacent thin plate hanging clamping devices are close to each other, so that the long side of one of the limiting members and the short side of the other limiting member are close to each other to form the limiting structure.

[0011] Optionally, the fixed arm includes a left fixed plate and a right fixed plate, the left fixed plate and the right fixed plate are connected by a connecting piece, the connecting piece is connected to the arm mounting section by bolts, and one end of the rotating arm is hingedly disposed between the left fixed plate and the right fixed plate.

[0012] Optionally, the hanging clamp comprises: a first clamp arm and a second clamp arm, which are pivotally connected via a pivot shaft, a preloaded torsion spring is sleeved on the pivot shaft, the first clamp arm comprises a first clamp end formed with a first clamp surface, and the second clamp arm comprises a second clamp end arranged opposite to the first clamp end;

[0013] The reinforcing clamping member is detachably mounted on the second clamping end and extends toward the first clamping surface.

[0014] Optionally, a mounting hole is provided through the second clamping end, and the reinforced clamping member includes a shaft portion embedded in the mounting hole and a clamping portion extending toward the first clamping surface, and a hole-shaft clearance fit is formed between the shaft portion and the mounting hole.

[0015] Optionally, the shaft portion passes through the mounting hole and a radial pin hole is provided at the passing end, and a radial locking pin is passed through the radial pin hole.

[0016] Optionally, the radial pin hole is a radial through hole and includes an axial through groove extending from the hole to the axial end surface of the shaft portion.

[0017] Optionally, the first clamping surface of the first clamping end is formed with anti-slip teeth, and the clamping portion is formed with a tooth portion for engaging with the teeth.

[0018] Through the above technical solution, the thin plate hanging clamp assembly of the utility model can avoid contact between adjacent thin plates. In particular, in the PCB board printing process, it can avoid contact between adjacent PCB boards that would cause scratches or ink adhesion, thereby improving the quality of the finished PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a thin plate hanging clamp assembly according to a specific implementation mode of the utility model;

[0020] Figure 2 yes Figure 1 Structural schematic diagram of the medium and thin plate hanging clamping device;

[0021] Figure 3 yes Figure 2 A magnified schematic diagram of the circle B in the middle;

[0022] Figure 4 yes Figure 2 A schematic structural diagram of the middle connecting member 54;

[0023] Figure 5 yes Figure 1 Enlarged schematic diagram of circle C in the middle;

[0024] Figure 6 yes Figure 5 The diagram of the coordinated use of the limited parts;

[0025] Figure 7 yes Figure 2 A three-dimensional view of the center hanging clamp fixture;

[0026] Figure 8 yes Figure 2 Side view of the center hanging clamp;

[0027] Fig. 9 yes Figure 8 A magnified schematic diagram of circle A in the middle;

[0028] Fig.10 yes Figure 8 Enlarged schematic diagram of circle A in the middle (state when clamping the plate).

[0029] Description of Reference Numerals

[0030] 1 first clamping arm; 11 first clamping end; 111 tooth pattern; 2 second clamping arm; 21 second clamping end; 3 preloaded torsion spring; 4 reinforced clamping member; 41 clamping portion; 42 shaft portion; 421 radial pin hole; 422 through groove; 512 suspension mounting portion; 51a transverse bending surface; 511 arm mounting section; 52 fixture mounting portion; 53 arm structure; 531 fixed arm; 532 rotating arm; 531a left fixing plate; 531b right fixing plate; 54 connecting member; 541 head portion; 542 tail portion; 533 limiting member; 533a long side portion; 533b short side portion; 6 thin plate hanging clamp device; 10 hanging clamp fixture. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0032] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" generally refer to the up, down, left, right shown in the reference drawings; "inside and outside" refer to the inside and outside relative to the outline of each component itself. It should be noted that in the specific implementation manner of the present invention, a PCB board with a thickness of 0.4 mm is used to illustrate the advantages of the present invention, but the present invention is not limited to this.

[0033] In the printing process of PCB boards, PCB boards need to go through multiple processes, and PCB boards are transferred between processes by conveying devices. Among them, the printed PCB boards need to be transferred from the printing machine to the drying device for drying before subsequent processing. Generally, the PCB boards are suspended and passed through the drying device in an assembly line manner. However, during the transfer process of the PCB boards, the PCB boards clamped by two adjacent hanging clamps are prone to contact due to inertia and / or their own flexibility, resulting in scratches or ink adhesion, which seriously affects the quality and production efficiency of PCB printing.

[0034] To solve the above problems, Figure 1-Figure 2As shown, a specific embodiment of the utility model discloses a thin plate hanging clamp assembly, which includes at least two thin plate hanging clamp devices 6 arranged in parallel, and the thin plate hanging clamp device 6 includes a support frame, the support frame is provided with a clamp mounting portion 52 and a suspension mounting portion 512 located on both sides of the clamp mounting portion 52, the clamp mounting portion 52 is provided with at least one hanging clamp 10 for clamping the thin plate, the support frame is connected with a limiting member 533, and the limiting members 533 of adjacent thin plate hanging clamp devices 6 are close to each other to form a limiting structure for limiting the swing of the clamped thin plate.

[0035] In some embodiments of the present invention, Figure 3 As shown, the suspension mounting portion 512 is arranged as a part of the support frame, and the two ends of the support frame are respectively bent into a "Z" shape to form a suspension mounting portion 512, wherein the transverse bending surface 51a at the top of the "Z"-shaped bending structure is provided with a through hole, so that the two ends of the support frame can be bolted to the transportation device in the prior art through the transverse bending surface 51a, so that the thin plate hanging clamp device 6 as a whole can pass through the drying furnace in an assembly line manner; in order to increase the strength, reinforcing ribs can also be provided at the connection portion between the transverse bending surface 51a and the support frame.

[0036] It should be noted that if Figure 1 , Figure 5 and Figure 6 As shown, the limiting structure of the utility model is formed by the cooperation of the limiting parts 533 of two adjacent thin plate hanging clamping devices 6, one of the thin plate hanging clamping devices 6 hangs the PCB board, and its own limiting part 533 limits one side of the PCB board, and the limiting part of the other parallel thin plate hanging clamping device limits the other side of the PCB board. In this way, a limiting structure is formed between the two adjacent limiting parts to prevent the PCB board from swinging and contacting each other during the movement process.

[0037] In order to limit the swinging of PCB boards of different sizes, in some embodiments of the utility model, arm mounting sections 511 are provided at both ends of the support frame, and the arm mounting section 511 at each end is rotatably connected to an arm structure 53 provided with a limiting piece 533. The arm structures 53 at both ends rotate close to each other to jointly limit the two sides of the PCB board. Therefore, PCB boards of different sizes can be clamped and fixed by adjusting the rotation angle of the arm structures at both ends, which is flexible and convenient to use.

[0038] In some embodiments of the present invention, Figure 2 As shown, the arm structure 53 includes fixed arms 531 fixedly connected to the arm mounting sections 511 located on both sides of the support frame and a rotating arm 532 hinged to the fixed arm 531; specifically, as shown in FIG. Figure 3 and Figure 4As shown, the fixed arm 531 is installed at both ends of the support frame and has a straight section extending along the length direction of the support frame. The straight section is away from the support frame and extends downward at an angle, thereby expanding the placement space of the PCB board. The fixed arm 531 includes a left fixing plate 531a and a right fixing plate 531b. The left fixing plate 531a and the right fixing plate 531b are connected in parallel and at intervals through a connecting member 54. The connecting member 54 is connected to the arm mounting section 511 by bolts. One end of the rotating arm 532 is hingedly arranged between the left fixing plate 531a and the right fixing plate 531b.

[0039] In some embodiments of the present invention, Figure 4 As shown, the connecting member 54 includes a head 541 and a tail 542. The head 541 is provided with bolt holes in the height direction and is fixed to the arm mounting section 511 by bolts. The two sides of the tail 542 are respectively provided with grooves, and the grooves are penetrated with connecting holes. The left fixing plate 531a and the right fixing plate 531b are relatively embedded in the grooves on the sides of the tail 542 and are fixedly connected by bolts. In some embodiments, each component in the thin plate hanging clamp device 6 is made of aluminum alloy material; one end of the rotating arm 532 is hinged between the left fixing plate 531a and the right fixing plate 531b, wherein a left gasket (not shown) is arranged between the rotating arm 532 and the left fixing plate 531a, and a right gasket (not shown) is arranged between the rotating arm 532 and the right fixing plate 531b, and the left fixing plate 531a, the left gasket, the rotating arm 532, the right fixing plate 531b, and the right gasket are fixed by bolts. In this way, the tightness of the rotation of the rotating arm 532 and the fixed arm 531 can be adjusted, which is flexible and convenient to use. The distance between the two rotating arms 532 can be adjusted according to the size of the PCB board to adapt to the clamping and fixing of PCBs of different sizes. In addition, when the flexible PCB board is clamped, the rotating arms on both sides clamp the flexible PCB board, and the upper and lower ends are located in the same straight line to maintain a vertical state.

[0040] In some embodiments of the present invention, a limiting piece 533 is connected to the bottom end of the rotating arm 532, and the rotating arm 532 has a bending section. It should be noted that since the clamped plate is jointly limited by adjacent limiting pieces that are close to each other, this will cause the upper and lower ends of the clamped thin plate to be not on a vertical line in the height direction when the thin plate is a flexible plate. This clamping form is extremely disadvantageous when, for example, a flexible PCB board is clamped and enters a drying device for drying. The bending section can make the upper and lower ends of the flexible PCB board be on the same straight line. It can be understood that in order to facilitate the replacement and cleaning of the limiting piece, a detachable connection can be adopted between the limiting piece and the rotating arm.

[0041] It should be noted that if Figure 6As shown, the limiting member 533 includes a long side portion 533a and a short side portion 533b, and the long side portion and the short side portion intersect on the extension line of their respective length directions. The limiting members 533 of two adjacent thin plate clamping devices 6 are close to each other, so that the long side portion 533a of one of the limiting members 533 and the short side portion 533b of the other limiting member 533 are close to each other to form a limiting structure, wherein, when the flexible PCB board is not limited in place, the side edge of the PCB board can slide into the limiting structure along the long side portion.

[0042] In some embodiments of the present invention, the limiting member 533 is configured as follows: Figure 6 The polygonal sheet plate shown has its edges bent 90° to form long sides and short sides, and the opposite sides of adjacent limiting members are also bent to facilitate fixing of the PCB board.

[0043] In the present invention, on the basis of the aforementioned thin plate hanging clamp device 6, a hanging clamp fixture of the present invention is also provided. Figure 7-10 As shown, the hanging clamp comprises: a first clamp arm 1 and a second clamp arm 2 pivotally connected by a pivot shaft, a preloaded torsion spring 3 providing clamping force is sleeved on the pivot shaft, the first clamp arm 1 comprises a first clamp end 11 formed with a first clamping surface, the second clamp arm 2 comprises a second clamp end 21 arranged opposite to the first clamp end 11, and the clamped part is clamped between the first clamp end 11 and the second clamp end 21; in order to enhance the clamping effect, a reinforcing clamp 4 is detachably installed on the second clamp end 21, and the reinforcing clamp 4 extends toward the first clamping surface. In this way, during the hanging clamping operation, the clamped part between the first clamp end 11 and the second clamp end 21 is clamped by relatively reducing the clamping gap by adding the reinforcing clamp 4 on the second clamp end 21, thereby achieving stable clamping, and the reinforcing clamp 4 is detachably installed, and a more suitable reinforcing clamp 4 can be replaced according to the characteristics (such as thickness) of the clamped part.

[0044] like Fig. 9 As shown, in order to facilitate the replacement of the enhanced clamping member 4, in the utility model, a mounting hole is provided through the second clamping end 21, and the enhanced clamping member 4 includes a shaft portion 42 embedded in the mounting hole and a clamping portion 41 extending toward the first clamping surface, and the shaft portion 42 and the mounting hole are matched with a hole-axis clearance; in this way, the enhanced clamping member 4 has a certain activity space in the mounting hole. When the clamping operation is performed, the enhanced clamping member 4 can be slightly moved and adjusted according to the gravity or thickness of the clamped member, and then adaptively find the clamping balance point, so that the clamped member is not easy to fall off and will only be pulled tighter and tighter to achieve stable clamping; further, a radial pin hole 421 is provided at the end of the shaft portion 42 passing through the mounting hole, and a radial locking pin is connected to the radial pin hole 421 for easy disassembly and installation. The radial pin hole 421 is a radial through hole and includes an axial through groove 422 extending from the hole to the axial end face of the shaft portion 42.

[0045] To further enhance the clamping effect, see Figure 9-10 The first clamping surface of the first clamping end 11 is pressed to form a tooth pattern 111 to prevent slipping, and the clamping portion 41 is formed with a tooth portion for meshing with the tooth pattern 111. In this way, the meshing of the tooth pattern 111 and the tooth portion can be used to increase the clamping force and friction force. In particular, in the PCB printing process, after the PCB board is printed, the ink is not dry yet, and it needs to be suspended into a drying furnace for drying. The PCB board is thin, smooth and flexible (the texture is similar to that of an imaging film), and the general clamp is prone to unstable clamping and falling. The hanging clamp of the utility model can improve the reliability of the hanging clamp by clamping the PCB board between the tooth pattern 111 and the tooth portion. The clamp has a simple structure, is easy to operate, and is easy to realize automatic control, which can improve the production efficiency of the PCB board. It should be noted that, for example, the clamp disclosed in the prior art CN215402610U comprises a mounting plate, two clamping arms movably arranged on the mounting plate and opposite to each other, and a transmission rod assembly arranged on the mounting plate and movably connected to the clamping arms, the lower end of the clamping arm has a clamping portion, the transmission rod assembly comprises a fixed block arranged on the mounting plate, and a control rod movably passed through the fixed block, the lower end of the control rod is rotatably connected to the two clamping arms by a connecting rod assembly, the clamping action of the clamp requires the participation of multiple parts, and it is easy for the clamping action to fail or the clamping to be unstable due to rust of a certain part. The utility model has a simple structure and, under the same production conditions, greatly reduces the probability of unstable clamping due to rust or jamming of a certain part.

[0046] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various specific technical features in any appropriate manner. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A thin plate hanging clamp assembly, characterized in that: The thin plate hanging clamp assembly comprises at least two thin plate hanging clamp devices (6) arranged in parallel, the thin plate hanging clamp device (6) comprises a support frame, the support frame is provided with a clamp mounting portion (52) and a suspension mounting portion (512) located on both sides of the clamp mounting portion (52), the clamp mounting portion (52) is provided with at least one hanging clamp (10) for clamping the thin plate, the support frame is connected with a limiting member (533), and the limiting members (533) of adjacent thin plate hanging clamp devices (6) form a limiting structure for limiting the swing of the clamped thin plate.

2. The thin plate hanging clamp assembly according to claim 1, characterized in that: Arm mounting sections (511) are provided at both ends of the support frame, and the arm mounting section (511) at each end is rotatably connected to an arm structure (53) provided with the limiting member (533), and the arm structures (53) at both ends rotate to approach each other to jointly limit the two sides of the clamped thin plate.

3. The thin plate hanging clamp assembly according to claim 2, characterized in that: The arm-holding structure (53) comprises fixed arms (531) each fixedly connected to the arm-holding mounting sections (511) located on both sides of the support frame, and a rotating arm (532) hingedly connected to the fixed arm (531).

4. The thin plate hanging clamp assembly according to claim 3, characterized in that: The bottom end of the rotating arm (532) is connected to a limiting piece (533), and the rotating arm (532) has a bending section.

5. The thin plate hanging clamp assembly according to claim 1, 2 or 4, characterized in that: The limiting member (533) comprises a long side portion (533a) and a short side portion (533b), and the limiting members (533) of two adjacent thin plate hanging clamping devices (6) are close to each other, so that the long side portion (533a) of one of the limiting members (533) and the short side portion (533b) of the other limiting member (533) are close to each other to form the limiting structure.

6. The thin plate hanging clamp assembly according to claim 3, characterized in that: The fixed arm (531) comprises a left fixed plate (531a) and a right fixed plate (531b), the left fixed plate (531a) and the right fixed plate (531b) being connected via a connecting piece (54), the connecting piece (54) being connected to the arm mounting section (511) via bolts, and one end of the rotating arm (532) being hingedly arranged between the left fixed plate (531a) and the right fixed plate (531b).

7. The thin plate hanging clamp assembly according to claim 1, characterized in that: The hanging clamp fixture comprises: The first clamp arm (1) and the second clamp arm (2) are pivotally connected via a pivot shaft, a preloaded torsion spring (3) is sleeved on the pivot shaft, the first clamp arm (1) comprises a first clamp end (11) formed with a first clamp surface, and the second clamp arm (2) comprises a second clamp end (21) arranged opposite to the first clamp end (11); The reinforcing clamping member (4) is detachably mounted on the second clamping end (21) and extends toward the first clamping surface.

8. The thin plate hanging clamp assembly according to claim 7, characterized in that: The second clamping end (21) is provided with a mounting hole extending therethrough, the reinforced clamping member (4) comprises a shaft portion (42) embedded in the mounting hole and a clamping portion (41) extending toward the first clamping surface, and a hole-shaft clearance fit is formed between the shaft portion (42) and the mounting hole.

9. The thin plate hanging clamp assembly according to claim 8, characterized in that: The shaft portion (42) passes through the mounting hole and a radial pin hole (421) is provided at the end of the shaft portion (42), and a radial locking pin is passed through the radial pin hole (421).

10. The thin plate hanging clamp assembly according to claim 7, characterized in that: The first clamping surface of the first clamping end (11) is formed with anti-slip tooth patterns (111), and the clamping portion (41) is formed with tooth portions for meshing with the tooth patterns (111).

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