A clamping assembly for a flexible printed circuit board

Abstract

The application discloses a clamping assembly of a flexible printed circuit board and relates to the technical field of integrated circuit manufacturing. The box body assembly comprises a mounting box; first sliding rails and second sliding rails are arranged at the two ends of the mounting box; the first sliding rails are movably arranged with the second clamping assembly; the second sliding rails are movably arranged with the first clamping assembly; the first clamping assembly comprises a first negative pressure head; the first negative pressure head is fixedly arranged at the bottom of a lifting frame through an air pipe; a first toothed plate is fixedly arranged with the lifting frame; the first toothed plate is meshed with a ratchet wheel assembly; an electric push cylinder fixedly arranged at the top of a fixing frame drives the lifting frame to move downwards, the first negative pressure head at the bottom is negatively adsorbed with one end of a circuit board, the electric push cylinder drives the first clamping assembly and one end of the circuit board to move upwards, the first toothed plate at one end of the lifting frame drives a ratchet gear to rotate, and the ratchet gear drives a second gear through a connecting shaft to drive a moving rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of integrated circuit manufacturing, and in particular to a clamping assembly for a flexible printed circuit board. BACKGROUND

[0002] A flexible printed circuit board is a printed circuit board with patterns made of a flexible substrate, which is composed of an insulating substrate and a conductive layer, and there can be an adhesive between the insulating substrate and the conductive layer. It can be bent, rolled or folded at will, is suitable for designs requiring compactness or irregular shapes, can move and expand in three-dimensional space, and realizes the integration of component assembly and wire connection. Due to the thin thickness of the substrate, the overall weight is light, meeting the needs of modern electronic products for miniaturization and portability. The connection is tight, and the anti-vibration performance is good, making it more durable in high-vibration and mobile environments, and better and more effective in absorbing vibration and impact.

[0003] Traditional clamping assemblies often have uneven pressure distribution between the FPC and the clamping components due to unreasonable structural design. For example, single-point or local stress of the buckle can cause the FPC edge to lift or have a small displacement in a vibrating environment, resulting in poor circuit contact, signal interruption or increased resistance. When the traditional clamping assembly clamps and processes the flexible circuit board, the circuit board is affected by temperature, causing the circuit board to bend, which cannot effectively ensure the quality of printing. Moreover, the traditional clamping device usually uses a rigid structure to contact the circuit board, which can easily cause the circuit board to be too tight or too loose, and cannot effectively ensure the quality of the circuit board itself and its stability during processing.

[0004] After searching, Chinese patent application No. CN202110629474.2 discloses a clamping tool for cutting a flexible circuit board; it includes a transmission belt, which includes a bottom plate, side plates and a top plate, the bottom plate, side plates and top plate form a combined groove, an embedding groove is formed in the side plate; a connecting plate is arranged in the combined groove, and a pressing plate is arranged in the embedding groove; a clamping assembly includes a support block and a pressing piece, the pressing piece is arranged on the support block, and the support block is clamped on the top plate.

[0005] Although the device in the above-mentioned patent can effectively achieve the clamping effect of the flexible printed circuit board, when the pressing piece contacts the circuit board, there may be wrinkles on the surface of the circuit board, which can cause damage to the circuit board during processing, cannot effectively ensure the transmission effect, and affects the quality of the circuit board. SUMMARY

[0006] The purpose of the present application is to provide a flexible printed circuit board clamping assembly, in the device, first by the first clamping assembly to achieve the adsorption effect of one end of the flexible printed circuit board, in the process of moving up of the first clamping assembly, through the cooperation between the ratchet assembly and the drive assembly, the flat plate fixedly installed at the end of the moving rod is moved forward, so that the flat plate moves to the bottom of the circuit board, and the sliding plate is slid along the support rod by rotating the winding wheel through the driving motor, so that the flat plate effectively moves along the bottom of the circuit board, thereby effectively flattening the flexible printed circuit board, avoiding the situation that there are wrinkles on the surface of the circuit board, in the process of moving the flat plate, the connecting belt realizes the synchronous rotation of the first pulley and the first gear, through the cooperation between the first gear and the second clamping assembly, the second negative pressure head in the second clamping assembly moves downward, effectively adsorbing and clamping the other end of the flexible printed circuit board, when the wedge block on the moving rod contacts the stop block, the moving rod drives the flat plate to move backward, avoiding the interference of the flat plate during the processing of the circuit board; to solve the problems in the above background art.

[0007] To achieve the above purpose, the present application provides the following technical scheme:

[0008] A flexible printed circuit board clamping assembly, comprising a box body assembly; the box body assembly comprises a mounting box; one side of the mounting box is fixedly provided with a first sliding rail and a second sliding rail at both ends of the side wall; wherein; the first sliding rail is movably installed with the second clamping assembly; the second sliding rail is movably installed with the first clamping assembly; wherein; the first clamping assembly comprises a first negative pressure head; the first negative pressure head is fixedly installed at the bottom of the lifting frame through the air pipe; one end of the lifting frame is movably installed with the second sliding rail through the first sliding block; a first toothed plate is arranged between the two first sliding blocks; the first toothed plate is fixedly installed with the lifting frame; the first toothed plate is meshed and connected with the ratchet assembly; in the process of descending, the ratchet gear in the ratchet assembly idles, which effectively avoids the influence on the displacement of the first clamping assembly; and the stability of the first clamping assembly during movement is ensured;

[0009] The ratchet assembly comprises a ratchet gear; the ratchet gear is coaxially provided with a second gear through a connecting shaft; one end of the connecting shaft is movably installed with the mounting box side plate through a bearing; the bottom of the second gear is movably installed with the driving assembly; the driving assembly comprises a moving rod; the cross section of the moving rod is U-shaped; one end of the moving rod is fixedly provided with a flat plate; the cross section of the flat plate is C-shaped, so that the surface of the bottom plate of the circuit board can be contacted with the circuit board during flattening, thereby ensuring the flattening effect of the flat plate.

[0010] As a further technical scheme of the present application, the teeth are integrally arranged on the top plane of the moving rod, and the teeth are meshed and connected with the second gear; the bottom of the moving rod is slidably installed with the slide plate through the bearing with seat; the surface of the moving rod is movably installed with the bearing with seat through the spline shaft; the rotation of the second gear drives the moving rod to move the flattening plate forward, thereby realizing the flattening effect on the circuit board.

[0011] As a further technical scheme of the present application, the two ends of the slide plate are slidably connected with the support rod; the two ends of the support rod are fixedly installed with the inner wall of the installation box; a spring is further sleeved on the support rod, and the spring is extruded when the slide plate moves, and the slide plate is reset through the extension of the spring.

[0012] As a further technical scheme of the present application, a double-round-head groove is further formed in the side wall of the installation box, and the double-round-head groove is arranged at one end of the moving rod; a stopper is arranged at one end of the double-round-head groove; the stopper is fixedly installed with the inner wall of the installation box, and the stopper is in contact with the wedge-shaped block on the moving rod, thereby driving the moving rod to move the flattening plate backward, separating the flattening plate from the circuit board, and avoiding the interference of the flattening plate during the processing of the circuit board.

[0013] As a further technical scheme of the present application, a wedge-shaped block cooperating with the stopper is fixedly installed on the moving rod; the surfaces at the joint of the stopper and the wedge-shaped block are both inclined surfaces.

[0014] As a further technical scheme of the present application, a first pulley is movably installed on the moving rod; the first pulley is movably installed with the moving rod through the torsion spring inside the first pulley; a connecting belt is fixedly installed on the first pulley.

[0015] As a further technical scheme of the present application, the driving assembly further comprises a second pulley; the second pulley is arranged on the same plane as the first pulley; the second pulley is coaxially provided with a first gear through a rotating shaft; the first gear is arranged outside the installation box; the first gear is connected with the second clamping assembly; the rotating shaft is movably installed with the side wall of the installation box through a bearing.

[0016] As a further technical scheme of the present application, a driving motor is arranged at the top of the rotating shaft; the driving motor is fixedly installed with the inner wall of the installation box through a reinforcing plate; a winding wheel is fixedly installed on the output shaft of the driving motor; the winding wheel is fixedly installed with one end of the connecting belt away from the first pulley.

[0017] As a further technical scheme of the present application, the second clamping assembly comprises two second damping sliding blocks in sliding connection with the first sliding rails; the two second damping sliding blocks are fixedly installed with the lifting plate; the bottom of the lifting plate is fixedly installed with a second negative pressure head through the air pipe; a second toothed plate is further arranged between the two second damping sliding blocks; and the second toothed plate is in meshing connection with the first gear.

[0018] As a further technical scheme of the present application, the box assembly is fixedly installed inside the fixed frame; one end of the top of the fixed frame is further fixedly installed with an electric push cylinder; and the push rod of the electric push cylinder is fixedly installed with the lifting frame.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. In use, first, the fixed frame is moved to the top of the flexible printed circuit board through the moving assembly, the lifting frame is driven downward by the electric push cylinder fixedly installed at the top of the fixed frame through the cooperation between the first sliding block and the second sliding rail, the first negative pressure head at the bottom is negatively adsorbed with one end of the circuit board in the process of the lifting frame descending, and then the first clamping assembly and one end of the circuit board are driven upward by the electric push cylinder, at this time, the first toothed plate at one end of the lifting frame drives the ratchet gear to rotate, so that the ratchet gear drives the second gear through the connecting shaft to drive the moving rod.

[0021] 2. When the second gear is in meshing engagement with the teeth at the top of the moving rod, the moving rod moves forward, the end of the moving rod drives the flat plate to move to the bottom of the circuit board, at this time, the first clamping assembly stops rising, the winding wheel is driven to rotate by the driving motor, the winding wheel pulls the connecting belt, the second pulley at the other end of the connecting belt drives the moving rod to move the sliding plate along the support rod away from one end of the ratchet assembly, so that the flat plate is effectively moved along the edge of the bottom of the circuit board, the circuit board is effectively flattened, and the situation that there are wrinkles on the surface of the circuit board during processing is avoided.

[0022] 3、The present application, in the process of winding the winding wheel, when the connecting belt passes through the second belt wheel, the second belt wheel drives the first gear to rotate synchronously through the rotating shaft, the first gear is engaged with the second toothed plate at the end of the lifting plate, so that the second toothed plate drives the lifting plate to move downward along the first slide rail, when the second damping block slides with the first slide rail, it has a certain damping effect, effectively improving the stability of the lifting plate during lifting, during the process of the lifting plate (51) descending, the second negative pressure head moves to the position flush with the first negative pressure head; with the movement of the moving rod, when the other end of the circuit board contacts the second negative pressure head, the wedge-shaped block on the moving rod contacts the stop block at the end of the double round head groove at this time, which effectively stops the moving rod from driving the flattening plate to retract backward, thus effectively avoiding the interference of the flattening plate on the processing during clamping, thereby effectively ensuring the quality of the circuit board processing;

[0023] 4、The present application, after the flattening plate is reset, the driving motor stops rotating, at this time the spring on the supporting rod resets, realizing driving the sliding plate to move away from the driving motor along the supporting rod, at this time the torsional spring inside the first belt wheel resets synchronously, realizing pulling the connecting belt, the winding wheel is rewound and ready for the next use, after the first clamping assembly and the second clamping assembly complete clamping the circuit board, the moving assembly realizes the overall movement of the clamping assembly, realizing transferring the clamped circuit board to the processing position. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective structural schematic diagram of the present application.

[0025] Figure 2 is another perspective structural schematic diagram of the present application Figure 1 .

[0026] Figure 3 is a disassembled schematic diagram of the present application Figure 1 .

[0027] Figure 4 is a local structural schematic diagram of the present application Figure 3 .

[0028] Figure 5 is another perspective structural schematic diagram of the first clamping assembly in the present application Figure 3 .

[0029] Figure 6 is another perspective structural schematic diagram of the second clamping assembly in the present application Figure 3 .

[0030] Figure 7 is an internal structure assembly schematic diagram of the mounting box in the present application Figure 4 .

[0031] Figure 8is the bottom structure schematic diagram of the present application Figure 7 The assembly schematic diagram of the driving assembly and the ratchet assembly in the present application.

[0032] Figure 9 is the bottom structure schematic diagram of the present application Figure 8 The assembly schematic diagram of the driving assembly and the ratchet assembly in the present application.

[0033] Figure 10 is the bottom structure schematic diagram of the present application Figure 1 The local structure enlarged view of A in the present application.

[0034] Figure 11 is the bottom structure schematic diagram of the present application Figure 1 The local structure enlarged view of B in the present application.

[0035] Figure 12 is the bottom structure schematic diagram of the present application Figure 7 The local structure enlarged view of C in the present application.

[0036] Figure 13 is the bottom structure schematic diagram of the present application Figure 9 The local structure enlarged view of D in the present application.

[0037] In the figure: 1 - fixed frame, 2 - box assembly, 20 - installation box, 21 - double round head groove, 22 - first sliding rail, 23 - second sliding rail, 24 - stop block, 3 - electric push cylinder, 4 - first clamping assembly, 40 - first negative pressure head, 41 - lifting frame, 42 - first toothed plate, 43 - first sliding block, 5 - second clamping assembly, 50 - second negative pressure head, 51 - lifting plate, 52 - second toothed plate, 53 - second damping sliding block, 6 - driving assembly, 60 - first gear, 61 - rotating shaft, 62 - second pulley, 63 - driving motor, 64 - winding wheel, 65 - connecting belt, 66 - spring, 67 - supporting rod, 68 - moving rod, 69 - first pulley, 610 - sliding plate, 611 - wedge-shaped block, 612 - tooth, 7 - flattening plate, 8 - ratchet assembly, 80 - ratchet gear, 81 - second gear, 82 - connecting shaft. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0039] Please refer to Figures 1-8In the embodiment of the present application, a clamping assembly of a flexible printed circuit board comprises a box assembly 2; the box assembly 2 comprises a mounting box 20; first and second slide rails 22 and 23 are fixedly installed at both ends of a side wall of the mounting box 20; wherein; the first slide rail 22 is movably installed with a second clamping assembly 5; the second slide rail 23 is movably installed with a first clamping assembly 4; wherein; the first clamping assembly 4 comprises a first negative pressure head 40; the first negative pressure head 40 is fixedly installed at the bottom of a lifting frame 41 through an air pipe; one end of the lifting frame 41 is movably installed with the second slide rail 23 through a first sliding block 43; a first toothed plate 42 is arranged between the two first sliding blocks 43; the first toothed plate 42 is fixedly installed with the lifting frame 41; the first toothed plate 42 is meshingly connected with a ratchet wheel assembly 8;

[0040] The ratchet wheel assembly 8 comprises a ratchet gear 80; the ratchet gear 80 is coaxially provided with a second gear 81 through a connecting shaft 82; one end of the connecting shaft 82 is movably installed with the side plate of the mounting box 20 through a bearing; the bottom of the second gear 81 is movably installed with a driving assembly 6; the driving assembly 6 comprises a moving rod 68; the moving rod 68 is provided in a U-shaped cross section; one end of the moving rod 68 is fixedly installed with a flattening plate 7; the flattening plate 7 is provided in a C-shaped cross section;

[0041] The top of the moving rod 68 is integrally provided with a tooth 612 on the plane; the tooth 612 is meshingly connected with the second gear 81; the bottom of the moving rod 68 is movably installed with a sliding plate 610 through a bearing with a seat; the surface of the moving rod 68 is movably installed with the bearing with a seat through a spline shaft;

[0042] By adopting the above technical scheme, in use, first, the fixing frame 1 is moved to the top of the flexible printed circuit board through the moving assembly; the lifting frame 41 is driven by the electric push cylinder 3 fixedly installed at the top of the fixing frame 1 to move downward through the cooperation between the first sliding block 43 and the second slide rail 23; in the process of the downward movement of the lifting frame 41, the first negative pressure head 40 at the bottom is negatively adsorbed with one end of the circuit board; then the first clamping assembly 4 and one end of the circuit board are driven by the electric push cylinder 3 to move upward; at this time, the first toothed plate 42 at one end of the lifting frame 41 drives the ratchet gear 80 to rotate; the ratchet gear 80 drives the second gear 81 to drive the moving rod 68 through the connecting shaft 82.

[0043] Please refer to Figures 7-13 In the embodiment, the bottom of the sliding plate 610 is movably connected with the support rod 67; the two ends of the support rod 67 are fixedly installed with the inner wall of the mounting box 20; the support rod 67 is further sleeved with a spring 66;

[0044] In the embodiment, a double-round-head groove 21 is further formed in the side wall of the mounting box 20 to facilitate the movement of the rod 68; one end of the double-round-head groove 21 is provided with a stopper 24; the stopper 24 is fixedly installed on the inner wall of the mounting box 20;

[0045] By adopting the above technical scheme, when the second gear 81 meshes with the teeth 612 at the top of the rod 68, the rod 68 moves forward, the end of the rod 68 drives the flat plate 7 to move to the bottom of the circuit board, at this time, the first clamping assembly 4 stops rising, and then the driving motor 63 drives the winding wheel 64 to rotate, so that the winding wheel 64 pulls the connecting belt 65, at this time, the second pulley 62 at the other end of the connecting belt 65 drives the rod 68 to move, so that the slide plate 610 moves along the support rod 67 away from one end of the ratchet assembly 8, thereby effectively realizing the movement of the flat plate 7 along the edge of the bottom of the circuit board, and effectively flattening the circuit board, avoiding the existence of wrinkles on the surface of the circuit board during processing.

[0046] Please refer to Figures 2-13 Furthermore, the rod 68 is fixedly installed with a wedge-shaped block 611 matched with the stopper 24; the surfaces at the joints of the stopper 24 and the wedge-shaped block 611 are both inclined surfaces.

[0047] In the embodiment, the rod 68 is further movably installed with a first pulley 69; the first pulley 69 is movably installed with the rod 68 through a torsion spring; the first pulley 69 is fixedly installed with the connecting belt 65.

[0048] By adopting the above technical scheme, during the winding process of the winding wheel 64, when the connecting belt 65 passes through the second pulley 62, the second pulley 62 drives the first gear 60 to synchronously rotate through the rotating shaft 61, the first gear 60 meshes with the second toothed plate 52 at the end of the lifting plate 51, so that the second toothed plate 52 drives the lifting plate 51 to move downward along the first sliding rail 22, when the second damping sliding block 53 slides along the first sliding rail 22, it has a certain damping effect, effectively improving the stability of the lifting plate 51 during lifting, and during the descending process of the lifting plate 51, the second negative pressure head 50 moves to a position flush with the first negative pressure head 40.

[0049] Please refer to Figures 7-13 In the embodiment, the driving assembly 6 further comprises a second pulley 62; the second pulley 62 is in the same plane as the first pulley 69; the second pulley 62 is coaxially provided with a first gear 60 through a rotating shaft 61; the first gear 60 is arranged on the outer side of the mounting box 20; the first gear 60 is matched and connected with the second clamping assembly 5; the rotating shaft 61 is movably installed on the side wall of the mounting box 20 through a bearing;

[0050] The top of the rotating shaft 61 is provided with a driving motor 63, which is fixedly installed on the inner wall of the mounting box 20 through a reinforcing plate; a winding wheel 64 is fixedly installed on the output shaft of the driving motor 63; the winding wheel 64 is fixedly installed on the end of the connecting belt 65 away from the first pulley 69;

[0051] By adopting the above technical scheme, when the other end of the circuit board contacts the second negative pressure head 50 with the movement of the moving rod 68, the wedge-shaped block 611 on the moving rod 68 contacts the stop block 24 at the end of the double-round-head groove 21, and the stop block 24 effectively stops the movement of the moving rod 68, which drives the flattening plate 7 to retract backward, thereby effectively avoiding the interference of the flattening plate 7 with the processing of the circuit board during clamping and processing, and effectively ensuring the quality of the circuit board processing.

[0052] Please refer to Figures 1-6 In the embodiment, the second clamping assembly 5 includes two second damping sliding blocks 53 in sliding connection with the first sliding rail 22; the two second damping sliding blocks 53 are fixedly installed on the lifting plate 51; the bottom of the lifting plate 51 is fixedly installed with the second negative pressure head 50 through an air pipe; a second toothed plate 52 is further arranged between the two second damping sliding blocks 53; the second toothed plate 52 is in meshing connection with the first gear 60;

[0053] The box assembly 2 is fixedly installed in the fixed frame 1; wherein, the top of one end is further fixedly installed with an electric push cylinder 3; the push rod of the electric push cylinder 3 is fixedly installed with the lifting frame 41;

[0054] By adopting the above technical scheme, after the flattening plate 7 is reset, the driving motor 63 stops rotating, at this time the spring 66 on the supporting rod 67 resets, which drives the sliding plate 610 to move along the supporting rod 67 away from the driving motor 63, at this time the torsional spring in the first pulley 69 resets synchronously, which pulls the connecting belt 65, and the winding wheel 64 is rewound for the next use; after the first clamping assembly 4 and the second clamping assembly 5 clamp the circuit board, the moving assembly moves the clamping assembly as a whole, and the clamped circuit board is transferred to the processing position.

[0055] The working principle of the present application is: in use, first, the fixing frame 1 is moved to the top of the flexible printed circuit board through the moving assembly, the electric push cylinder 3 fixedly installed at the top of the fixing frame 1 drives the lifting frame 41 to move downward through the cooperation between the first sliding block 43 and the second sliding rail 23, in the process of descending of the lifting frame 41, the first negative pressure head 40 at the bottom is negatively adsorbed with one end of the circuit board, and then the electric push cylinder 3 drives the first clamping assembly 4 and one end of the circuit board to move upward, at this time, the first gear plate 42 at one end of the lifting frame 41 drives the ratchet gear 80 to rotate, so that the ratchet gear 80 drives the second gear 81 through the connecting shaft 82 to drive the moving rod 68;

[0056] When the second gear 81 is engaged with the gear teeth 612 at the top of the moving rod 68, the moving rod 68 moves forward, the end of the moving rod 68 drives the flattening plate 7 to move to the bottom of the circuit board, at this time, the first clamping assembly 4 stops rising, and then the driving motor 63 drives the winding wheel 64 to rotate, so that the winding wheel 64 pulls the connecting belt 65, at this time, the second pulley 62 at the other end of the connecting belt 65 drives the moving rod 68 to move the sliding plate 610 along the support rod 67 away from one end of the ratchet assembly 8, so as to effectively move the flattening plate 7 along the edge of the bottom of the circuit board, and effectively flatten the circuit board, avoiding the situation that there are wrinkles on the surface of the circuit board during processing;

[0057] In the process of winding of the winding wheel 64, when the connecting belt 65 passes through the second pulley 62, the second pulley 62 drives the first gear 60 to rotate synchronously through the rotating shaft 61, the first gear 60 is engaged with the second gear plate 52 at the end of the lifting plate 51, so as to drive the second gear plate 52 to move the lifting plate 51 downward along the first sliding rail 22, when the second damping sliding block 53 slides along the first sliding rail 22, it has a certain damping effect, effectively improving the stability of the lifting plate 51 during lifting, and in the process of descending of the lifting plate 51, the second negative pressure head 50 moves to a position flush with the first negative pressure head 40;

[0058] With the movement of the moving rod 68 and the flattening plate 7, when the other end of the circuit board contacts the second negative pressure head 50, at this time, the wedge-shaped block 611 on the moving rod 68 contacts the stop block 24 at the end of the double-round-head groove 21, and the stop block 24 effectively stops the movement of the moving rod 68 and the flattening plate 7, so as to effectively avoid the interference of the flattening plate 7 with the processing during clamping and processing of the circuit board, thereby effectively ensuring the quality of the circuit board processing;

[0059] After the flat plate 7 is reset, the driving motor 63 stops rotating, at this time the spring 66 on the support rod 67 resets, realizing the slide plate 610 is driven to move along the support rod 67 to the end far away from the driving motor 63, at this time the torsion spring inside the first pulley 69 resets synchronously, realizing the connecting belt 65 is pulled, the unwinding wheel 64 is unwound and is ready for the next use, after the first clamping assembly 4 and the second clamping assembly 5 clamp the circuit board, the moving assembly realizes the moving of the clamping assembly as a whole, realizing the clamped circuit board is transferred to the processing position.

[0060] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present examples are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the specification as such. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although the present specification describes exemplary embodiments, the application is not limited to only one independent technical solution in each embodiment, and the specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A clamping assembly for a flexible printed circuit board, characterized in that: The enclosure includes a housing assembly (2); the housing assembly (2) includes a mounting box (20); a first slide rail (22) and a second slide rail (23) are fixedly installed at both ends of one side wall of the mounting box (20); wherein; the first slide rail (22) is movably installed with the second clamping assembly (5); the second slide rail (23) is fitted with the first clamping assembly (4); wherein; The first clamping assembly (4) includes a first negative pressure head (40); the first negative pressure head (40) is fixedly installed at the bottom of the lifting frame (41) via an air pipe; one end of the lifting frame (41) is slidably installed with a second slide rail (23) via a first slider (43); a first toothed plate (42) is provided between the two first sliders (43); the first toothed plate (42) is fixedly installed with the lifting frame (41); the first toothed plate (42) is engaged with a ratchet assembly (8); The ratchet assembly (8) includes a ratchet gear (80); the ratchet gear (80) is coaxially mounted with a second gear (81) via a connecting shaft (82); one end of the connecting shaft (82) is movably mounted to the side plate of the mounting box (20) via a bearing; the bottom of the second gear (81) is connected to the drive assembly (6); the drive assembly (6) includes a moving rod (68); the moving rod (68) has a U-shaped cross-section; one end of the moving rod (68) is fixedly mounted with a flat plate (7); the flat plate (7) has a C-shaped cross-section.

2. The clamping assembly for a flexible printed circuit board according to claim 1, characterized in that: The top plane of the movable rod (68) is integrally provided with teeth (612), which mesh with the second gear (81); the bottom of the movable rod (68) is slidably installed with the slide plate (610) through a seated bearing; the surface of the movable rod (68) and the inside of the seated bearing are movably installed through a spline shaft.

3. The clamping assembly for a flexible printed circuit board according to claim 2, characterized in that: The bottom ends of the slide plate (610) are slidably connected to the support rod (67); the two ends of the support rod (67) are fixedly installed to the inner wall of the mounting box (20); and a spring (66) is also sleeved on the support rod (67).

4. The clamping assembly for a flexible printed circuit board according to claim 3, characterized in that: The side wall of the mounting box (20) is also provided with a double round head groove (21) to facilitate the passage of one end of the moving rod (68); a stop block (24) is provided at one end of the double round head groove (21); the stop block (24) is fixedly installed with the inner wall of the mounting box (20).

5. The clamping assembly for a flexible printed circuit board according to claim 4, characterized in that: The moving rod (68) is fixedly installed with a wedge block (611) that cooperates with the stop block (24); the surfaces where the stop block (24) and the wedge block (611) meet are both inclined surfaces.

6. The clamping assembly for a flexible printed circuit board according to claim 5, characterized in that: The movable rod (68) is also movably mounted with a first pulley (69); the first pulley (69) is movably mounted with the movable rod (68) through a torsion spring; a connecting belt (65) is fixedly mounted on the first pulley (69).

7. The clamping assembly for a flexible printed circuit board according to claim 4, characterized in that: The drive assembly (6) further includes a second pulley (62); the second pulley (62) and the first pulley (69) are on the same plane; the second pulley (62) is coaxially provided with a first gear (60) via a rotating shaft (61); the first gear (60) is located on the outside of the mounting box (20); the first gear (60) is connected to the second clamping assembly (5); the rotating shaft (61) is movably mounted to the side wall of the mounting box (20) via a bearing.

8. The clamping assembly for a flexible printed circuit board according to claim 7, characterized in that: A drive motor (63) is provided on the top of the rotating shaft (61); the drive motor (63) is fixedly installed on the inner wall of the mounting box (20) through a reinforcing plate; a winding wheel (64) is fixedly installed on the output shaft of the drive motor (63); the winding wheel (64) is fixedly installed on the end of the connecting belt (65) away from the first pulley (69).

9. A clamping assembly for a flexible printed circuit board according to claim 7, characterized in that: The second clamping assembly (5) includes two second damping sliders (53) that are slidably connected to the first slide rail (22); the two second damping sliders (53) are fixedly installed with the lifting plate (51); a second negative pressure head (50) is fixedly installed at the bottom of the lifting plate (51) through an air pipe; a second toothed plate (52) is also provided between the two second damping sliders (53); the second toothed plate (52) is meshed with the first gear (60).

10. A clamping assembly for a flexible printed circuit board according to claim 7, characterized in that: The box assembly (2) is fixedly installed inside the fixed frame (1); wherein, an electric push cylinder (3) is also fixedly installed at the top of one end; the push rod of the electric push cylinder (3) is fixedly installed with the lifting frame (41).

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