Automatic laminating machine for flexible circuit board

Abstract

The invention relates to the technical field of flexible circuit board laminating, in particular to an automatic laminating machine for a flexible circuit board, which comprises an outer frame and a placement plate, an air box plate is mounted at the lower end of the placement plate, the placement plate and the outer frame are connected with the air box plate, and a laminating suction head is arranged above the placement plate. The outer frame is provided with a control structure for controlling transverse and longitudinal movement and stretching and retracting of the pasting suction head, a pasting suction pipe capable of sliding in a cross mode is inserted into the upper surface of the containing plate, the pasting suction pipe is communicated with a hose, the hose is communicated with the air box plate, the pasting suction pipe penetrates through the containing plate and can slide in the cross mode, and the periphery of the pasting suction pipe and the air box plate are elastically arranged. The top plate moves upwards along with the bending frame below to push the blocking rod on the lower side of the pasting suction head to move upwards, and when the upper end of the blocking rod is matched with the upper end of the pasting suction pipe, the upper end of the pasting suction pipe is blocked, so that an FPC below the pasting suction head is separated from the suction force of the pasting suction pipe, and the FPC below the pasting suction head is effectively prevented from sinking under the suction force.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible circuit board lamination, and in particular to an automatic flexible circuit board laminator. Background Art

[0002] Flexible printed circuit boards (hereinafter referred to as FPCs) have the advantages of being light, small, and thin. In the current era when electronic products are becoming smaller and more functional, FPCs will be more widely used. During the processing of FPCs, a pasting operation is generally required, that is, pasting the FPC on a carrier board, which is an important positioning operation before entering the lamination process.

[0003] Chinese Patent CN110461092A discloses an automatic flexible circuit board laminator, the structure of which includes a lamination body, a front movable hatch, a dust exhaust port, a main control computer, and a distributed positioning device. The distributed positioning device consists of a positioning carrier plate, a slider, a slide rail, a linear stepping motor, and a connecting support. The effects of this invention are as follows: The distributed positioning device forms suction during the operation of the air cylinder, and uses the guiding bracket and the distributed positioning top plate to disperse and then concentrate the gas pressure, so that the suction of each air hole on the surface of the distributed positioning top plate can be kept consistent. During the process of adsorbing and positioning the flexible circuit board, each part of the flexible circuit board is pressed evenly, so as to solve the problem that the existing flexible circuit board positioning method may cause local deformation when the suction force is too large during the positioning process, resulting in bubbles during the pasting operation. The above-mentioned related technologies have the following defects: In the lamination process, a combination of a vacuum suction nozzle and a suction cup is used to position the FPC. However, due to the soft characteristics of the FPC, the suction cup is likely to cause depressions when adsorbing the FPC. In the prior art, generally, the pressure of all suction nozzles is balanced to make all the stress points of the FPC balanced. However, when the lamination point of the FPC is located at the adsorption point, the adsorption point will be depressed due to adsorption, resulting in a reduction in the lamination accuracy of the lamination point. Therefore, an automatic flexible circuit board laminator is proposed. Summary of the Invention

[0004] In order to prevent the FPC at the lamination point from being deformed and depressed due to suction, resulting in a reduction in lamination accuracy, the present invention provides an automatic flexible circuit board laminator.

[0005] An automatic flexible circuit board laminator provided by the present invention adopts the following technical solution: It includes an outer frame and a placement plate. An air box plate is installed at the lower end of the placement plate, and both the placement plate and the outer frame are connected to the air box plate. A pasting suction head is arranged above the placement plate, and a control structure for controlling the horizontal and vertical movement and telescoping of the pasting suction head is installed on the outer frame.

[0006] A suction and pasting tube that can slide crosswise is inserted into the upper surface of the placement plate. The suction and pasting tube is connected and installed with a hose, and the hose is connected and installed with the air box plate. The suction and pasting tube can slide crosswise through the placement plate, and the periphery of the suction and pasting tube is elastically arranged with the air box plate.

[0007] A slidable plug rod is inserted at the lower end of the suction tube.

[0008] A top plate is arranged on the lower side of the air box plate. The top plate is located directly below the material suction head. Both the top plate and the material suction head are connected with bending frames. The two bending frames are slidably sleeved. One side of the outer frame is slidably connected with a reverse movement structure for controlling the synchronous reverse movement of the two bending frames. The reverse movement structure is connected with the control structure. The bending frame connected with the material suction head is connected with the reverse movement structure. The other bending frame is vertically telescopically elastically connected with the reverse movement structure.

[0009] Optionally, the control structure includes a power longitudinal threaded rod, a main frame, a vertical power telescopic rod and a horizontal power threaded rod. The power longitudinal threaded rod is rotationally connected with the outer frame. The main frame is threadedly sleeved on the outer surface of the main frame. The main frame is slidably sleeved at one end of the outer frame. The upper end of the main frame is rotationally sleeved at both ends of the horizontal power threaded rod. The power vertical telescopic rod is horizontally movably slidably inserted at the upper end of the main frame. The upper end of the power vertical telescopic rod is threadedly sleeved on the surface of the horizontal power threaded rod. The telescopic end of the power vertical telescopic rod is connected with the material suction head.

[0010] Optionally, the reverse movement structure includes a sleeve block and a gear. The sleeve block is slidably connected with the outer frame. The gear is rotationally connected with the sleeve block. The upper end of the sleeve block is fixed to the main frame. Tooth plates are engaged on both the front and rear sides of the gear. The tooth plates are slidably connected with the sleeve block. The bending frame connected with the material suction head is horizontally slidably connected with one of the tooth plates. The bending frame connected with the top plate is horizontally slidably and vertically elastically movably connected with the other tooth plate.

[0011] Optionally, the placement plate is provided with a cross groove A at the position of the suction tube. The suction tube is inserted into the cross groove A in a matching manner. The upper surface of the suction tube is flush with the upper surface of the placement plate.

[0012] Optionally, the suction tube includes two limit rings. The two limit rings are fixed to the suction tube. The two limit rings are respectively in sliding contact with the upper surface of the air box plate and the bottom surface of the placement plate. Four horizontal elastic telescopic rods are arranged around. The four horizontal elastic telescopic rods are arranged in a cross shape around the suction tube. The air box plate is provided with a cross groove B at the position of the suction tube. The suction tube passes through the cross groove B. One end of the horizontal elastic telescopic rod is fixed to the cross groove B. The other end of the horizontal elastic telescopic rod is in contact with the suction tube. On the outer surface of the suction tube, the distribution positions of the four horizontal elastic telescopic rods are adapted to the upper cross groove A.

[0013] Optionally, the plug rod includes an auxiliary push spring. The upper end of the auxiliary push spring is fixed to the inner wall of the suction tube. The lower end of the auxiliary push spring is fixed to the plug rod. The plug rod is arranged inside the auxiliary push spring. The upper end axis of the suction tube is in a hole shape. The outer diameter of the plug rod is equal to the inner diameter of the hole shape at the upper end of the suction tube.

[0014] Optionally, a concentric ring that can slide vertically is sleeved on the outer end of the plug rod. A transmission spring is fixed to the bottom surface of the concentric ring. The lower end of the transmission spring is connected to the lower end of the plug rod. The plug rod is arranged on the inner ring side of the transmission spring. Four telescopic push rods are installed at the lower end of the suction tube. The telescopic end of the telescopic push rod is rotatably connected to a hinge plate. The lower end of the hinge plate is rotatably connected to the concentric ring. The telescopic push rod is composed of an inner rod and a sleeve rod. The inner rod is connected to the suction tube, and the hinge plate is connected to the sleeve rod.

[0015] Optionally, a vertically elastic telescopic rod that can move horizontally is sleeved on the surface of the bending frame connected to the top plate. The upper end of the vertically elastic telescopic rod is fixed to the toothed plate.

[0016] Optionally, the upper end of the top plate is square in shape, and the minimum distance between two adjacent plug rods in the horizontal and vertical directions is equal to the side length of the top plate.

[0017] In summary, the present invention has the following beneficial technical effects:

[0018] 1. By setting components such as a plug rod, a suction tube, and a top plate, when the material-attaching suction head moves downward for fitting, the connected bending frame is driven to move downward. The downward-moving bending frame drives the lower bending frame to move upward through the reverse movement structure. The top plate follows the upward movement of the lower bending frame and pushes the plug rod below the material-attaching suction head upward. When the upper end of the plug rod cooperates with the upper end of the suction tube, the upper end of the suction tube is blocked, so that the FPC below the material-attaching suction head is separated from the suction of the suction tube, effectively preventing the FPC below the material-attaching suction head from being sunken under the suction force.

[0019] 2. By setting components such as telescopic push rods, hinge plates, and concentric rings, when the top plate moves upward, the concentric ring is pushed upward through the transmission spring. The lower end of the hinge plate moves upward synchronously with the concentric ring. The upper end of the hinge plate drives the sleeve rod of the telescopic push rod to gradually move away from the suction tube, applying a thrust to the adjacent telescopic push rods, and pushing the four suction tubes on the adjacent horizontal and vertical sides of the suction tube below the material-attaching suction head to gradually move away from the lower side of the material-attaching suction head. When the suction tubes adsorbing the FPC move, the FPC is flattened, assisting the FPC to return to a flat state after being separated from the suction force, and further increasing the flatness of the FPC fitting position.

[0020] 3. By setting the cross slot A, when the plug rod below the material-attaching suction head moves upward and pushes the four suction tubes on the adjacent horizontal and vertical sides to move, the suction tubes slide in the corresponding cross slot A, so that the suction tubes can only move in the cross direction, limiting the trajectory of the suction tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present invention;

[0022] Figure 2 is a schematic side view structure diagram in an embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the connection between the outer frame and the main frame in the embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the connection between the sleeve block and the outer frame in the embodiment of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the connection between the gear and the toothed plate in the embodiment of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the interior of the placement plate and the air box plate in the embodiment of the present invention;

[0027] Figure 7 It is a schematic bottom view of a part of the structure in the embodiment of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the interior of the suction and attachment tube in the embodiment of the present invention;

[0029] Figure 9 It is a schematic front view of a part of the structure in the embodiment of the present invention.

[0030] Reference numerals: 1. Outer frame; 2. Placement plate; 3. Air box plate; 4. Material sticking suction head; 5. Control structure; 51. Power longitudinal threaded rod; 52. Main frame; 53. Vertical power telescopic rod; 54. Transverse power threaded rod; 55. Power vertical telescopic rod; 6. Suction and attachment tube; 61. Limit ring; 62. Horizontal elastic telescopic rod; 7. Plug rod; 71. Auxiliary push spring; 72. Concentric ring; 73. Transmission spring; 74. Telescopic push rod; 75. Hinge plate; 8. Top plate; 9. Reverse movement structure; 91. Sleeve block; 92. Gear; 93. Toothed plate; 931. Vertical elastic telescopic rod; 10. Bent frame; 11. Hose. Detailed implementation manners

[0031] The following will further describe the present invention in detail with reference to the attached Figures 1 - 9 drawings.

[0032] An embodiment of the present invention discloses a flexible circuit board automatic laminating machine. As Figures 1 - 9 shown, it includes an outer frame 1 and a placement plate 2. A gas box plate 3 is installed at the lower end of the placement plate 2. The placement plate 2 and the outer frame 1 are both connected to the gas box plate 3. The gas box plate 3 is connected to an external air pressure device, so that the external air pressure device can generate negative pressure inside the gas box plate 3. A material sticking suction head 4 is arranged above the placement plate 2. The material sticking suction head 4 is connected to an external air pressure device, so that the external air pressure device can control whether the material sticking suction head 4 can adsorb materials. A control structure 5 for controlling the horizontal and vertical movement and telescoping of the material sticking suction head 4 is installed on the outer frame 1.

[0033] The control structure 5 includes a power longitudinal threaded rod 51, a main frame 52, a vertical power telescopic rod 53, and a horizontal power threaded rod 54. The power longitudinal threaded rod 51 is rotatably connected to the outer frame 1. The main frame 52 is threadedly sleeved on the outer surface of the main frame 52. The power longitudinal threaded rod 51 is connected to an external motor. When the power longitudinal threaded rod 51 rotates, it can drive the main frame 52 and the material-pasting suction head 4 to move back and forth by meshing with the main frame 52. The main frame 52 is slidably sleeved at one end of the outer frame 1. The two ends of the horizontal power threaded rod 54 are rotatably sleeved at the upper end of the main frame 52. The power vertical telescopic rod 55 is horizontally movably inserted at the upper end of the main frame 52. The upper end of the power vertical telescopic rod 55 is threadedly sleeved on the surface of the horizontal power threaded rod 54. The horizontal power threaded rod 54 is connected to an external motor. When the horizontal power threaded rod 54 rotates, it can drive the power vertical telescopic rod 55 to move left and right. The telescopic end of the power vertical telescopic rod 55 is connected to the material-pasting suction head 4. When the power vertical telescopic rod 55 expands and contracts, it can control the up and down movement of the material-pasting suction head 4.

[0034] A suction and pasting tube 6 that can slide crosswise is inserted on the upper surface of the placement plate 2. The placement plate 2 is provided with a cross-shaped groove A at the position of the suction and pasting tube 6. The suction and pasting tube 6 is inserted and matched in the cross-shaped groove A. The upper end surface of the suction and pasting tube 6 is flush with the upper surface of the placement plate 2 to ensure that the bottom surface of the FPC is as flat as possible. The suction and pasting tube 6 is connected and installed with a hose 11. The hose 11 is connected and installed with the air box plate 3. The air box plate 3 makes the suction and pasting tube 6 generate suction force on the FPC through the hose 11.

[0035] The suction and pasting tube 6 can slide crosswise through the placement plate 2. The periphery of the suction and pasting tube 6 is elastically arranged with the air box plate 3.

[0036] The suction and pasting tube 6 includes two limiting rings 61. The two limiting rings 61 are fixed to the suction and pasting tube 6. The two limiting rings 61 are respectively in sliding contact with the upper surface of the air box plate 3 and the bottom surface of the placement plate 2. When the suction and pasting tube 6 moves, the two limiting rings 61 on the surface of the suction and pasting tube 6 slide on the bottom surface of the placement plate 2 and the upper surface of the air box plate 3 respectively, ensuring that the suction and pasting tube 6 remains vertical when moving.

[0037] Four horizontal elastic telescopic rods 62 are arranged around, and the four horizontal elastic telescopic rods 62 are arranged around the suction tube 6 in a cross shape. At the same time, the suction tube 6 and the air box plate 3 can be made of springs or other materials with elastic rebound, but are not limited to the horizontal elastic telescopic rods 62. The air box plate 3 is provided with a cross groove B at the suction tube 6, and the suction tube 6 is inserted into the cross groove B. One end of the horizontal elastic telescopic rod 62 is fixed to the cross groove B, and the other end of the horizontal elastic telescopic rod 62 contacts the suction tube 6. On the outer surface of the suction tube 6, the distribution positions of the four horizontal elastic telescopic rods 62 are adapted to the upper cross groove A, and the cross groove A and the lower cross groove B are in the same direction. When the suction tube 6 moves, it slides in the corresponding cross groove A and cross groove B. The horizontal elastic telescopic rods 62 around the suction tube 6 make the suction tube 6 tend to be located at the center of the cross groove A, and the outer diameter of the limit ring 61 ensures that it will not detach from the cross groove A and the cross groove B.

[0038] A slidable blocking rod 7 is inserted at the lower end of the suction tube 6 .

[0039] The blocking rod 7 includes an auxiliary push spring 71, the upper end of the auxiliary push spring 71 is fixed to the inner wall of the suction tube 6, the lower end of the auxiliary push spring 71 is fixed to the blocking rod 7, the blocking rod 7 is arranged on the inner side of the auxiliary push spring 71, the upper end of the suction tube 6 is in a hole shape at the axis, the outer diameter of the blocking rod 7 is equal to the inner diameter of the hole at the upper end of the suction tube 6, the auxiliary push spring 71 has a tendency to assist in pushing the blocking rod 7 to the bottom, when the blocking rod 7 moves to the top, the blocking rod 7 blocks the upper end of the suction tube 6, and at the same time the upper end surface of the blocking rod 7 is flush with the upper end surface of the suction tube 6.

[0040] A top plate 8 is arranged on the lower side of the air box plate 3 , and the top plate 8 is located directly below the material attaching suction head 4 .

[0041] The outer end of the blocking rod 7 is sleeved with a concentric ring 72 that can slide vertically. A transfer spring 73 is fixed to the bottom surface of the concentric ring 72. The lower end of the transfer spring 73 is connected to the lower end of the blocking rod 7. The blocking rod 7 is arranged on the inner ring side of the transfer spring 73. Four telescopic push rods 74 are installed at the lower end of the suction tube 6. The telescopic end of the telescopic push rod 74 is rotatably connected to a hinge plate 75. The lower end of the hinge plate 75 is rotatably connected to the concentric ring 72. The telescopic push rod 74 consists of an inner rod and a sleeve rod. The inner rod is connected to the suction tube 6, and the hinge plate 75 is connected to the sleeve rod. When the top plate 8 moves upward, it can push the upper blocking rod 7, and the blocking rod 7 moves upward When the concentric ring 72 is pushed upward by the transfer spring 73, the lower end of the hinged plate 75 moves upward synchronously with the concentric ring 72, and the upper end of the hinged plate 75 drives the sleeve rod of the telescopic push rod 74 to gradually move away from the suction tube 6, exerting a thrust on the adjacent telescopic push rod 74, pushing the suction tube 6 on the lower side of the material pasting suction head 4 and the four suction tubes 6 on both sides of the adjacent horizontal and vertical directions to gradually move away from the lower side of the material pasting suction head 4, and flatten the FPC when the suction tube 6 adsorbed by the FPC moves, so as to help the FPC below the material pasting suction head 4 to recover its flatness after being separated from the suction force, thereby further increasing the flatness of the FPC pasting position.

[0042] The upper end of the top plate 8 is square in shape, and the minimum distance between two adjacent blocking rods 7 in the horizontal and vertical directions is equal to the side length of the top plate 8, so that when the top plate 8 moves upward, it will surely push one and at most one blocking rod 7.

[0043] Both the top plate 8 and the material-pasting suction head 4 are connected with bending frames 10. The two bending frames 10 can be slidably sleeved, and the two bending frames 10 move synchronously back and forth and left and right, so that the top plate 8 and the material-pasting suction head 4 move synchronously back and forth and left and right. One side of the outer frame 1 is slidably connected with a reverse movement structure 9 for controlling the synchronous reverse movement of the two bending frames 10. The reverse movement structure 9 is connected with the control structure 5. The bending frame 10 connected with the material-pasting suction head 4 is connected with the reverse movement structure 9, and the other bending frame 10 is elastically connected with the reverse movement structure 9 in a vertically telescopic manner.

[0044] The reverse movement structure 9 includes a sleeve block 91 and a gear 92. The sleeve block 91 is slidably connected with the outer frame 1, and the gear 92 is rotatably connected with the sleeve block 91. The upper end of the sleeve block 91 is fixed to the main frame 52. Tooth plates 93 are engaged with both the front and rear sides of the gear 92. The tooth plates 93 are slidably connected with the sleeve block 91. The bending frame 10 connected with the material-pasting suction head 4 is slidably connected with one of the tooth plates 93 in the horizontal direction. The bending frame 10 connected with the top plate 8 is slidably connected with the other tooth plate 93 in the horizontal direction and can move elastically in the vertical direction. A vertically elastic telescopic rod 931 that can move horizontally is sleeved on the surface of the bending frame 10 connected with the top plate 8. The upper end of the vertically elastic telescopic rod 931 is fixed to the tooth plate 93. The elastic connection between the top plate 8 and the tooth plate 93. The elastic material is not limited to the vertically elastic telescopic rod 931 and can be a material with elastic resilience such as a spring. When the material-pasting suction head 4 moves, the corresponding tooth plate 93 is driven to move through the connected bending frame 10. When the gear 92 rotates, it drives the other tooth plate 93 to move in the opposite direction, so that when the top plate 8 moves in the vertical direction, it moves in the opposite direction to the movement direction of the material-pasting suction head 4. When the material-pasting suction head 4 moves downward to fit, when the top plate 8 moves upward, the top plate 8 first pushes the blocking rod 7 to block the upper end of the suction and pasting tube 6. Then, when the material-pasting suction head 4 continues to move, the lower bending frame 10 stops moving, and the vertically elastic telescopic rod 931 extends to enable the tooth plate 93 to continue to move.

[0045] The working principle is as follows: The control structure 5 controls the spatial movement of the material-pasting suction head 4. When the material-pasting suction head 4 moves in the horizontal plane direction, the top plate 8 is driven to move synchronously through the two bending frames 10, so that the top plate 8 is always located directly below the material-pasting suction head 4. When the material-pasting suction head 4 moves up and down, the two bending frames 10 move in opposite directions under the action of the reverse movement structure 9, driving the top plate 8 to move upward. After the top plate 8 and the blocking rod 7 apply a thrust, the blocking rod 7 is pushed to move upward relative to the suction and pasting tube 6. When the blocking rod 7 blocks the upper end of the suction and pasting tube 6, the suction and pasting tube 6 stops applying suction to the FPC in contact, so that the FPC below the material-pasting suction head 4 is separated from the suction of the suction and pasting tube 6, preventing the FPC below from being sunken due to the suction of the suction and pasting tube 6 when the material-pasting suction head 4 moves downward for pasting, resulting in insufficient pasting accuracy.

[0046] The above are all preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A flexible circuit board automatic laminating machine, comprising an outer frame (1) and a placement board (2), characterized in that: A gas tank plate (3) is installed at the lower end of the placement plate (2). The placement plate (2) and the outer frame (1) are both connected to the gas tank plate (3). A material pasting suction head (4) is arranged above the placement plate (2). The outer frame (1) is installed with a control structure (5) for controlling the horizontal and vertical movement and telescoping of the material pasting suction head (4). A suction and pasting tube (6) that can slide crosswise is inserted into the upper surface of the placement plate (2). A hose (11) is connected and installed to the suction and pasting tube (6) in a communicating manner. The hose (11) is connected and installed to the gas tank plate (3) in a communicating manner. The suction and pasting tube (6) can slide crosswise through the placement plate (2), and the periphery of the suction and pasting tube (6) is elastically arranged with the gas tank plate (3). A slidable plug rod (7) is inserted into the lower end of the suction and pasting tube (6). A top plate (8) is arranged on the lower side of the gas tank plate (3). The top plate (8) is located directly below the material pasting suction head (4). The top plate (8) and the material pasting suction head (4) are both connected with bending frames (10). The two bending frames (10) can be slidably sleeved. One side of the outer frame (1) is slidably connected with a reverse movement structure (9) for controlling the synchronous reverse movement of the two bending frames (10). The reverse movement structure (9) is connected with the control structure (5). The bending frame (10) connected to the material pasting suction head (4) is connected with the reverse movement structure (9). The other bending frame (10) is elastically connected with the reverse movement structure (9) in a vertically telescoping manner.

2. The automatic laminating machine for flexible circuit boards according to claim 1, wherein: The control structure (5) includes a power longitudinal threaded rod (51), a main frame (52), a vertical power telescopic rod (53), and a horizontal power threaded rod (54). The power longitudinal threaded rod (51) is rotatably connected to the outer frame (1). The main frame (52) is threadedly sleeved on the outer surface of the main frame (52). The main frame (52) can be slidably sleeved at one end of the outer frame (1). The upper end of the main frame (52) is rotatably sleeved at both ends of the horizontal power threaded rod (54). The power vertical telescopic rod (55) can be horizontally moved and slidably inserted into the upper end of the main frame (52). The upper end of the power vertical telescopic rod (55) is threadedly sleeved on the surface of the horizontal power threaded rod (54). The telescopic end of the power vertical telescopic rod (55) is connected to the material pasting suction head (4).

3. The automatic laminating machine for flexible printed circuit boards according to claim 2, wherein: The reverse movement structure (9) includes a sleeve block (91) and a gear (92). The sleeve block (91) is slidably connected to the outer frame (1). The gear (92) is rotatably connected to the sleeve block (91). The upper end of the sleeve block (91) is fixed to the main frame (52). Tooth plates (93) are engaged on both the front and rear sides of the gear (92). The tooth plates (93) are slidably connected to the sleeve block (91). The bending frame (10) connected to the material pasting suction head (4) is slidably connected to one of the tooth plates (93) in a horizontal direction. The bending frame (10) connected to the top plate (8) is slidably connected to the other tooth plate (93) in a horizontal direction and can move vertically elastically.

4. A flexible circuit board automatic laminating machine according to claim 1, characterized in that: A cross slot A is opened at the position of the suction and pasting tube (6) on the placement plate (2). The suction and pasting tube (6) is inserted and matched in the cross slot A, and the upper end surface of the suction and pasting tube (6) is flush with the upper surface of the placement plate (2).

5. The automatic laminating machine for flexible circuit boards according to claim 4, wherein: The suction tube (6) includes two limit rings (61). The two limit rings (61) are fixed to the suction tube (6). The two limit rings (61) are in sliding contact with the upper surface of the air box plate (3) and the bottom surface of the placement plate (2) respectively. Four horizontal elastic telescopic rods (62) are arranged around. The four horizontal elastic telescopic rods (62) are arranged in a cross shape around the suction tube (6). A cross groove B is formed at the position of the air box plate (3) corresponding to the suction tube (6). The suction tube (6) passes through the cross groove B. One end of the horizontal elastic telescopic rod (62) is fixed to the cross groove B, and the other end of the horizontal elastic telescopic rod (62) is in contact with the suction tube (6). On the outer surface of the suction tube (6), the distribution positions of the four horizontal elastic telescopic rods (62) are adapted to the upper cross groove A.

6. The automatic laminating machine for flexible printed circuit boards according to claim 1, wherein: The plug rod (7) includes an auxiliary push spring (71). The upper end of the auxiliary push spring (71) is fixed to the inner wall of the suction tube (6), and the lower end of the auxiliary push spring (71) is fixed to the plug rod (7). The plug rod (7) is arranged inside the auxiliary push spring (71). The upper end axis of the suction tube (6) is in a hole shape, and the outer diameter of the plug rod (7) is equal to the inner diameter of the hole shape at the upper end of the suction tube (6).

7. The automatic laminating machine for flexible printed circuit boards according to claim 5, wherein: A concentric ring (72) that can slide vertically is sleeved on the outer end of the plug rod (7). A transmission spring (73) is fixed to the bottom surface of the concentric ring (72). The lower end of the transmission spring (73) is connected to the lower end of the plug rod (7). The plug rod (7) is arranged on the inner ring side of the transmission spring (73). Four telescopic push rods (74) are installed at the lower end of the suction tube (6). The telescopic end of the telescopic push rod (74) is rotatably connected to a hinge plate (75). The lower end of the hinge plate (75) is rotatably connected to the concentric ring (72). The telescopic push rod (74) is composed of an inner rod and a sleeve rod. The inner rod is connected to the suction tube (6), and the hinge plate (75) is connected to the sleeve rod.

8. The automatic laminating machine for flexible printed circuit boards according to claim 3, wherein: A vertical elastic telescopic rod (931) that can move horizontally is sleeved on the surface of the bending frame (10) connected to the top plate (8). The upper end of the vertical elastic telescopic rod (931) is fixed to the toothed plate (93).

9. The automatic laminating machine for flexible circuit boards according to claim 1, wherein: The upper end of the top plate (8) is square in shape, and the minimum distance between two adjacent plug rods (7) in the horizontal and vertical directions is equal to the side length of the top plate (8).

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