A hot pressing device and method for efficiently producing hard-soft combined circuit boards

Abstract

The present invention discloses a hot pressing device and method for efficiently producing hard-soft combined circuit boards. The present invention relates to the technical field of producing hard-soft combined circuit boards. The hot pressing device comprises a pad, on which a clamping and conveying mechanism for clamping and rotating printed circuit boards, a lifting mechanism for feeding printed circuit boards to the clamping and conveying mechanism, and a stacking mechanism for feeding cured sheets and FPC boards are arranged in sequence from left to right. The stacking mechanism comprises a machine table fixed on the pad, a connecting plate fixed on the right end surface of the machine table, and a horizontal cylinder fixed on the right side wall of the connecting plate. The left and right sides of the turntable are respectively welded with a left suction cup and a right suction cup. The top of the connecting plate is connected to a hot pressing mechanism for applying pressure and heating to the FPC board. The beneficial effects of the present invention are: greatly reducing the work intensity of workers and greatly improving the production efficiency of hard-soft combined circuit boards.

Description

Technical Field

[0001] The present invention relates to the technical field of producing a soft-hard combined circuit board, and in particular to a hot pressing device and method for efficiently producing a soft-hard combined circuit board. Background Art

[0002] Rigid-flex circuit boards have the characteristics of good electrical performance and fast transmission performance. They are widely used in consumer electronics, industrial and medical electronics, and military equipment. Rigid-flex circuit boards are highly favored by these industries. The structure of a rigid-flex circuit board produced by a workshop is as follows: Figure 1~Figure 2 As shown, it includes a printed circuit board 1, a layer of curing sheet 2 is pressed and molded on the top surface of the printed circuit board 1, and the curing sheet 2 completely covers the top surface of the printed circuit board 1, and a layer of FPC board 3 is pressed and molded on the top surface of the curing sheet 2, and the FPC board 3 completely covers the top surface of the curing sheet 2, wherein the thickness of the FPC board 3 is less than the thickness of the printed circuit board 1.

[0003] The method to produce this kind of soft and hard circuit board in the workshop is:

[0004] S1. A worker takes out a printed circuit board 1 from a material basket, and then places the printed circuit board 1 flat on the top surface of a hot pressing table of a hot pressing machine, and then adjusts the position of the printed circuit board 1 so that it is directly below the hot pressing head of the hot pressing machine;

[0005] S2, the worker takes out a curing sheet 2, and covers the curing sheet 2 on the top surface of the printed circuit board 1; then the worker takes out an FPC board 3, and covers the FPC board 3 on the top surface of the curing sheet 2, thereby achieving the placement of the curing sheet 2 and the FPC board 3;

[0006] S3, the worker controls the hot pressing head of the hot pressing machine to move downward, and the hot pressing head is pressed on the top surface of the FPC board 3. At the same time, the hot pressing head transfers the heat on the FPC board 3, and the FPC board 3 transfers the heat to the curing sheet 2. When the curing sheet 2 is heated, the FPC board 3 is fixedly connected with the printed circuit board 1, thereby producing the first rigid-flexible circuit board;

[0007] S4. The worker repeats steps S1 to S3 for multiple times to continuously produce multiple rigid-flexible circuit boards.

[0008] However, although the method used in the workshop can produce a batch of rigid-flex circuit boards, it still has the following technical defects:

[0009] I. In step S1, a printed circuit board 1 needs to be taken out from the material basket manually and placed flat on the hot pressing table of the hot press. After being placed flat, the position of the printed circuit board 1 needs to be frequently adjusted manually so that the printed circuit board 1 is just under the hot pressing head of the hot press. The entire operation is completed manually, which not only increases the work intensity of the workers, but also increases the production time of a single hard-soft circuit board, thereby reducing the production efficiency of the hard-soft circuit board.

[0010] II. In step S2, it is necessary to manually stack the curing sheet 2 and the FPC board 3 on the printed circuit board 1 in sequence to complete the stacking action; and the entire operation is completed manually, which not only greatly increases the work intensity of the workers, but also increases the production time of a single rigid-flexible circuit board, thereby reducing the production efficiency of the rigid-flexible circuit board.

[0011] Therefore, there is an urgent need for a hot pressing device and method that can greatly reduce the workload of workers and greatly improve the production efficiency of hard-flex circuit boards. Summary of the invention

[0012] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a hot pressing device and method for efficiently producing hard-and-soft combined circuit boards, which greatly reduces the workload of workers and greatly improves the production efficiency of hard-and-soft combined circuit boards.

[0013] The object of the present invention is achieved by the following technical scheme: a hot pressing device for efficiently producing a soft-hard combined circuit board, which comprises a pad, on which are arranged, from left to right, a clamping and conveying mechanism for clamping and rotating a printed circuit board, a lifting mechanism for feeding the printed circuit board to the clamping and conveying mechanism, and a stacking mechanism for feeding a cured sheet and an FPC board;

[0014] The clamping and conveying mechanism comprises a vertical plate fixed on the pad, a linear cylinder fixed in the vertical plate, a servo motor is fixed on the active end of the piston rod of the linear cylinder, a rotating shaft is connected to the output shaft of the servo motor, a clamping seat is fixed on the right end of the rotating shaft, a sink groove is opened on the bottom surface of the clamping seat, clamping cylinders are fixed on the left and right outer end surfaces of the clamping seat, and a clamping rod is fixed on the active end of the piston rod of the clamping cylinder, and the two clamping rods are opposite to each other on the left and right;

[0015] The stacking mechanism includes a machine table fixed on a pad, a connecting plate fixed on a right end surface of the machine table, and a horizontal cylinder fixed on a right side wall of the connecting plate. The piston rod of the horizontal cylinder passes through the connecting plate to the left, and a bracket is fixed on the extended end. A vertical cylinder is fixed on the top surface of the bracket. The piston rod of the vertical cylinder passes through the bracket downward, and a stepper motor is fixed on the extended end. A turntable is installed on the output shaft of the stepper motor. A left suction cup and a right suction cup are welded on the left and right sides of the turntable respectively. A suction head A is fixed on the bottom surface of the left suction cup and on its left and right ends, and the left suction cup is connected to the working port of the vacuum pump A; a suction head B is fixed on the bottom surface of the right suction cup and on its left and right ends, and the right suction cup is connected to the working port of the vacuum pump B;

[0016] The top end of the connecting plate is connected with a heat pressing mechanism for applying pressure and heating to the FPC board.

[0017] The sink groove matches the outer contour of the printed circuit board, and the depth of the sink groove is less than the thickness of the printed circuit board.

[0018] The jacking mechanism includes a main jacking cylinder fixed on a pad, and a jacking plate fixed on the action end of the piston rod of the main jacking cylinder. A material bin located directly below the clamping seat is fixed on the top surface of the jacking plate, and the inner cavity of the material bin matches the outer contour of the printed circuit board. An auxiliary jacking cylinder is fixed on the bottom surface of the jacking plate, and the piston rod of the auxiliary jacking cylinder extends into the material bin, and a support plate is connected to the extended end.

[0019] Two main lifting cylinders are fixedly arranged on the backing plate, and the lifting plate is fixedly arranged between the piston rods of the two main lifting cylinders.

[0020] Two positioning platforms are fixedly arranged on the top surface of the machine platform, and the two positioning platforms are respectively located directly below the left suction cup and the right suction cup.

[0021] The hot pressing mechanism includes a horizontal plate fixedly arranged on the top of the connecting plate, the horizontal plate extends to the left just above the machine platform, and a hot press is fixedly arranged on the extended end, the piston rod of the hot press passes through the horizontal plate downward, and a hot pressing head is fixedly arranged on the extended end, an electric heating plate is fixedly arranged on the top surface of the hot pressing head, and the electric heating plate is connected to a power source.

[0022] The hot pressing device also includes a controller, which is electrically connected to the hot pressing machine, the main lifting cylinder, the auxiliary lifting cylinder, the linear cylinder, the horizontal cylinder, the vertical cylinder, the servo motor and the stepping motor via a signal line.

[0023] A method for efficiently producing a hot pressing method for a rigid-flexible circuit board comprises the following steps:

[0024] S1. Workers pre-place multiple printed circuit boards in the silo of the lifting mechanism, and the multiple printed circuit boards are stacked on the support plate from bottom to top, wherein the topmost printed circuit board is just flush with the top surface of the silo;

[0025] S2. The worker stacks multiple cured sheets on the left positioning table in sequence. At this time, the top layer of cured sheets is just under the suction head A. The worker stacks multiple FPC boards on the right positioning table in sequence. The top layer of FPC boards is just under the suction head B.

[0026] S3. The topmost printed circuit board is transported to the bottom of the hot pressing head of the hot pressing mechanism. The specific operation steps are as follows:

[0027] S31, the piston rod of the auxiliary lifting cylinder of the control lifting mechanism extends upward, the piston rod drives the support plate to move upward, and the support plate drives each printed circuit board stacked thereon to move upward. When the topmost printed circuit board is ejected to the outside of the silo, the controller controls the auxiliary lifting cylinder to close;

[0028] S32, the piston rods of the two main lifting cylinders of the control lifting mechanism extend upward, the piston rods drive the lifting plate to move upward, the lifting plate drives the silo, the auxiliary lifting cylinder and the top printed circuit board to move upward synchronously, when the piston rod of the main lifting cylinder is fully extended, the top printed circuit board just enters the sink groove of the clamping seat of the clamping and conveying mechanism;

[0029] S33, control the piston rods of the two clamping cylinders of the clamping and conveying mechanism to retract, the piston rods drive the clamping rods to move synchronously, and both clamping rods move toward the printed circuit board. When the piston rods of the two clamping cylinders are fully retracted, the topmost printed circuit board is just clamped and fixed between the two clamping rods;

[0030] S34, control the piston rod of the main lifting cylinder to retract downward, the piston rod drives the lifting plate to move downward, the lifting plate drives the silo and the auxiliary lifting cylinder to move downward synchronously, and then the silo is reset;

[0031] S35, the servo motor controlling the clamping and conveying mechanism is started, the servo motor drives the rotating shaft to rotate, the rotating shaft drives the clamping seat to rotate synchronously, the clamping seat drives the printed circuit board clamped and fixed therein to rotate synchronously, when the printed circuit board rotates 180°, the controller controls the servo motor to turn off, at this time, the printed circuit board is placed upwards;

[0032] S36, the piston rod of the linear cylinder controlling the clamping and conveying mechanism extends to the right, the piston rod drives the servo motor and the clamping seat to move to the right, and the clamping seat drives the printed circuit board fixed therein to move to the right. When the piston rod of the linear cylinder is fully extended, the printed circuit board can be finally conveyed to the bottom of the hot pressing head of the hot pressing mechanism. At this time, the clamping seat is just supported on the top surface of the machine table;

[0033] S4. Stack the curing sheet and FPC board in sequence on the top surface of the printed circuit board. The specific operation steps are as follows:

[0034] S41, the piston rod of the vertical cylinder of the stacking mechanism is extended downward, the piston rod drives the stepper motor to move downward, the stepper motor drives the turntable, the left suction cup and the right suction cup to move downward synchronously, the left suction cup drives the suction head A to move downward, and the suction head A moves toward the topmost cured sheet, and at the same time, the right suction cup drives the suction head B to move downward, and the suction head B moves toward the topmost FPC board. When the piston rod of the vertical cylinder is extended to the set stroke, the controller controls the vertical cylinder to close, at which time, the suction head A and the suction head B are in contact with the top surface of the topmost cured sheet and the topmost FPC board respectively;

[0035] S42, control the vacuum pump A and vacuum pump B to start, vacuum pump A evacuates the left suction cup and suction head A, and under negative pressure, the topmost cured sheet is adsorbed and fixed on suction head A; at the same time, vacuum pump B evacuates the right suction cup and suction head B, and under negative pressure, the topmost FPC board is adsorbed and fixed on suction head B; then, control the piston rod of the vertical cylinder to retract upward, the piston rod drives the stepper motor to move upward, the stepper motor drives the left suction cup and the right suction cup to move upward at the same time, the left suction cup drives suction head A and the cured sheet to move upward, and at the same time, the right suction cup drives suction head B and the FPC board to move upward;

[0036] S43, the piston rod of the horizontal cylinder of the stacking mechanism is extended to the left, the piston rod drives the bracket to move to the left, the bracket drives the vertical cylinder, the stepper motor, the left suction cup and the right suction cup to move to the left synchronously, and then drives the curing sheet and the FPC board to move to the left. When the piston rod of the horizontal cylinder is fully extended, the curing sheet moves just above the printed circuit board;

[0037] S44, control the piston rod of the vertical cylinder to extend downward, the piston rod drives the stepper motor to move downward, the stepper motor drives the turntable, the left suction cup and the right suction cup to move downward synchronously, and then drives the suction head A to move downward, and the suction head A drives the cured sheet to move toward the printed board. When the piston rod of the vertical cylinder extends to the set stroke, the controller controls the vertical cylinder to close, at which time, the cured sheet just covers the top surface of the printed board;

[0038] S45, control the vacuum pump A to be turned off, and then control the piston rod of the vertical cylinder to retract upward, the piston rod drives the stepper motor to move upward, the stepper motor drives the turntable, the left suction cup and the right suction cup to move upward synchronously, and then drives the suction head A and the suction head B to move upward synchronously, and the suction head A moves away from the cured sheet;

[0039] S46, control the stepper motor to start, the stepper motor drives the turntable to rotate, the turntable drives the left suction cup and the right suction cup to rotate synchronously, the right suction cup drives the suction head B to rotate synchronously, the suction head B drives the FPC board adsorbed and fixed thereon to rotate synchronously, when the FPC board rotates 180°, the controller controls the stepper motor to turn off, at this time, the FPC board just moves to the top of the curing sheet;

[0040] S47, control the piston rod of the vertical cylinder to extend downward, the piston rod drives the stepper motor to move downward, the stepper motor drives the turntable, the left suction cup and the right suction cup to move downward synchronously, and then drives the suction head B to move downward, and the suction head B drives the FPC board to move toward the curing sheet. When the piston rod of the vertical cylinder extends to the set stroke, the controller controls the vertical cylinder to close, at which time, the FPC board just covers the top surface of the curing sheet;

[0041] S48, control the vacuum pump B to turn off, and then control the piston rod of the vertical cylinder to retract upward, the piston rod drives the stepper motor to move upward, the stepper motor drives the turntable, the left suction cup and the right suction cup to move upward synchronously, and then drives the suction head A and the suction head B to move upward synchronously, and the suction head B moves away from the FPC board; then control the piston rod of the horizontal cylinder to retract rightward, the piston rod drives the vertical cylinder, the left suction cup and the right suction cup to move rightward, so that the left suction cup and the right suction cup move away from the FPC board, thereby finally realizing the sequential stacking of the cured sheet and the FPC board on the top surface of the printed circuit board;

[0042] S5, turn on the power supply, the power supply energizes the electric heating plate, when the electric heating plate is energized, heat is generated on it, and the electric heating plate transfers the heat to the hot pressing head; then the piston rod of the hot pressing machine of the hot pressing mechanism is controlled to extend downward, and the piston rod drives the hot pressing head to move downward, and the hot pressing head is pressed on the top surface of the FPC board. At the same time, the hot pressing head transfers the heat on it to the FPC board, and the FPC board transfers the heat to the curing sheet. When the curing sheet is heated, the heated curing sheet connects the FPC board and the printed circuit board together, thereby producing the first soft-hard combination circuit board;

[0043] S6. Control the piston rods of the two clamping cylinders to extend outward, and the piston rods drive the clamping rods to move outward, and the clamping rods move toward the printed circuit board away from the rigid-flexible circuit board, and then the worker takes the rigid-flexible circuit board out of the clamping seat;

[0044] S7. The worker repeats steps S3 to S6 for multiple times to continuously produce multiple rigid-flexible circuit boards.

[0045] The present invention has the following advantages: greatly reducing the work intensity of workers and greatly improving the production efficiency of the soft-hard combined circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is the axonometric drawing of the hard-and-soft circuit board;

[0047] Figure 2 for Figure 1 The main cross-sectional diagram of

[0048] Figure 3 It is a structural schematic diagram of the present invention;

[0049] Figure 4for Figure 3 The main cross-sectional diagram of

[0050] Figure 5 It is a structural schematic diagram of the clamping and conveying mechanism;

[0051] Figure 6 It is a connection diagram of the clamping seat, the clamping rod and the clamping cylinder;

[0052] Figure 7 for Figure 6 Bottom view of

[0053] Figure 8 It is a structural schematic diagram of the jacking mechanism;

[0054] Fig. 9 This is the axonometric view of the silo;

[0055] Fig.10 for Fig. 9 The main cross-sectional diagram of

[0056] Fig.11 It is a structural schematic diagram of the stacking mechanism and the hot pressing mechanism;

[0057] Fig.12 It is a connection diagram of the left suction cup, suction head A and vacuum pump A;

[0058] Fig.13 It is a schematic diagram of the connection between the hot pressing head and the electric heating plate;

[0059] Fig.14 A schematic diagram of pre-placing a plurality of printed circuit boards in a silo of a lifting mechanism;

[0060] Fig.15 A schematic diagram of stacking a plurality of cured sheets in sequence on the positioning table on the left;

[0061] Fig.16 A schematic diagram of stacking multiple FPC boards in sequence on the positioning table on the right;

[0062] Fig.17 This is a schematic diagram after the topmost printed circuit board is ejected to the outside of the silo;

[0063] Fig.18 It is a schematic diagram of the topmost printed circuit board entering the sink of the clamping seat;

[0064] Fig.19 The schematic diagram is a diagram showing the topmost printed circuit board being clamped and fixed between two clamping bars;

[0065] Fig. 20 It is a schematic diagram of the silo reset;

[0066] Fig.21 This is a schematic diagram of the printed circuit board placed upwards;

[0067] Fig. 22 It is a schematic diagram of conveying the printed board to the bottom of the hot pressing head of the hot pressing mechanism;

[0068] Fig.23 It is a schematic diagram showing that the suction head A and the suction head B are in contact with the topmost cured sheet and the topmost FPC board respectively;

[0069] Fig.24 It is a schematic diagram of suction head A and suction head B driving the curing sheet and FPC board to move upward respectively;

[0070] Fig.25 It is a schematic diagram of the curing sheet moving to the top of the printed board;

[0071] Fig.26 It is a schematic diagram of the cured sheet covering the top surface of the printed board;

[0072] Fig. 27 for Fig.26 A partial enlarged view of the M part;

[0073] Fig.28 is a schematic diagram of the suction head A moving in a direction away from the solidified sheet;

[0074] Fig.29 It is a schematic diagram of the FPC board moving to the top of the curing sheet;

[0075] Fig.30 It is a schematic diagram of the FPC board covering the top surface of the cured sheet;

[0076] Fig.31 It is a schematic diagram of the vertical cylinder, the left suction cup and the right suction cup moving to the right;

[0077] Fig.32 A schematic diagram of a thermal press head pressing on the top surface of an FPC board;

[0078] Fig.33 for Fig.32 A partial enlarged view of part N;

[0079] In the figure:

[0080] 1-printed board, 2-cured sheet, 3-FPC board;

[0081] 4- pad, 5- clamping and conveying mechanism, 6- lifting mechanism, 7- stacking mechanism, 8- linear cylinder, 9- servo motor, 10- rotating shaft, 11- clamping seat, 12- sinking trough, 13- clamping cylinder, 14- clamping rod;

[0082] 15-machine table, 16-connecting plate, 17-horizontal cylinder, 18-bracket, 19-vertical cylinder, 20-stepping motor, 21-turntable, 22-left suction cup, 23-right suction cup, 24-suction head A, 25-suction head B, 26-thermal pressing mechanism;

[0083] 27-main lifting cylinder, 28-lifting plate, 29-bin, 30-auxiliary lifting cylinder, 31-support plate, 32-positioning table;

[0084] 33- hot press machine, 34- hot press head, 35- electric heating plate. DETAILED DESCRIPTION

[0085] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0086] like Figure 3~Figure 13 As shown, a hot pressing device for efficiently producing soft-hard combined circuit boards includes a pad 4, on which are arranged, from left to right, a clamping and conveying mechanism 5 for clamping and rotating the printed circuit board 1, a lifting mechanism 6 for supplying the printed circuit board 1 to the clamping and conveying mechanism 5, and a stacking mechanism 7 for supplying a cured sheet 2 and an FPC board 3.

[0087] The clamping and conveying mechanism 5 includes a vertical plate fixed on the pad 4, a linear cylinder 8 fixed in the vertical plate, a servo motor 9 is fixed on the active end of the piston rod of the linear cylinder 8, a rotating shaft 10 is connected to the output shaft of the servo motor 9, a clamping seat 11 is fixed on the right end of the rotating shaft 10, a sinking groove 12 is opened on the bottom surface of the clamping seat 11, a clamping cylinder 13 is fixed on the left and right outer end surfaces of the clamping seat 11, a clamping rod 14 is fixed on the active end of the piston rod of the clamping cylinder 13, and the two clamping rods 14 are opposite to each other on the left and right; the sinking groove 12 matches the outer contour of the printed circuit board 1, and the depth of the sinking groove 12 is less than the thickness of the printed circuit board 1.

[0088] The stacking mechanism 7 includes a machine table 15 fixed on the backing plate 4, a connecting plate 16 fixed on the right end surface of the machine table 15, and a horizontal cylinder 17 fixed on the right side wall of the connecting plate 16. The piston rod of the horizontal cylinder 17 passes through the connecting plate 16 to the left, and a bracket 18 is fixed on the extended end. A vertical cylinder 19 is fixed on the top surface of the bracket 18. The piston rod of the vertical cylinder 19 passes through the bracket 18 downward, and a stepping motor 20 is fixed on the extended end. A turntable 21 is installed on the output shaft of the stepping motor 20. A left suction cup 22 and a right suction cup 23 are welded to the left and right sides of the turntable 21, respectively; suction heads A24 are fixedly provided on the bottom surface of the left suction cup 22 and at its left and right ends, and the left suction cup 22 is connected to the working port of the vacuum pump A; suction heads B25 are fixedly provided on the bottom surface of the right suction cup 23 and at its left and right ends, and the right suction cup 23 is connected to the working port of the vacuum pump B; two positioning platforms 32 are fixedly provided on the top surface of the machine platform 15, and the two positioning platforms 32 are respectively located directly below the left suction cup 22 and the right suction cup 23.

[0089] The top of the connecting plate 16 is connected to a heat pressing mechanism 26 for applying pressure and heating to the FPC board 3. The heat pressing mechanism 26 includes a horizontal plate fixedly arranged on the top of the connecting plate 16. The horizontal plate extends to the left just above the machine table 15, and a heat press 33 is fixedly arranged on the extended end. The piston rod of the heat press 33 passes through the horizontal plate downward, and a heat pressing head 34 is fixedly arranged on the extended end. An electric heating plate 35 is fixedly arranged on the top surface of the heat pressing head 34, and the electric heating plate 35 is connected to a power source.

[0090] The lifting mechanism 6 includes a main lifting cylinder 27 fixed on the backing plate 4, a lifting plate 28 fixed on the action end of the piston rod of the main lifting cylinder 27, a material bin 29 located directly below the clamping seat 11 is fixed on the top surface of the lifting plate 28, the inner cavity of the material bin 29 matches the outer contour of the printed circuit board 1, and a secondary lifting cylinder 30 is fixed on the bottom surface of the lifting plate 28, the piston rod of the secondary lifting cylinder 30 extends into the material bin 29, and a support plate 31 is connected to the extended end. Two main lifting cylinders 27 are fixed on the backing plate 4, and the lifting plate 28 is fixed between the two piston rods of the main lifting cylinders 27.

[0091] The hot pressing device also includes a controller, which is electrically connected to the hot pressing machine 33, the main lifting cylinder 27, the auxiliary lifting cylinder 30, the linear cylinder 8, the horizontal cylinder 17, the vertical cylinder 19, the servo motor 9 and the stepper motor 20 via signal lines.

[0092] A method for efficiently producing a hot pressing method for a rigid-flexible circuit board comprises the following steps:

[0093] S1, workers pre-place multiple printed circuit boards 1 in the hopper 29 of the lifting mechanism 6, such as Fig.14As shown, a plurality of printed circuit boards 1 are stacked on the support plate 31 in sequence from bottom to top, wherein the printed circuit board 1 on the top layer is just flush with the top surface of the silo 29;

[0094] S2, the worker stacks a plurality of cured sheets 2 in sequence on the positioning table 32 on the left side, such as Fig.15 As shown, at this time, the topmost cured sheet 2 is just below the suction head A24; multiple FPC boards 3 are stacked in sequence on the positioning table 32 on the right side, as shown in FIG. Fig.16 As shown, the topmost FPC board 3 is just below the suction head B25;

[0095] S3, conveying the topmost printed board 1 to the bottom of the hot pressing head 34 of the hot pressing mechanism 26, and the specific operation steps are as follows:

[0096] S31, the piston rod of the auxiliary lifting cylinder 30 of the lifting mechanism 6 extends upward, the piston rod drives the support plate 31 to move upward, and the support plate 31 drives each printed circuit board 1 stacked thereon to move upward. When the top printed circuit board 1 is ejected to the outside of the silo 29, as shown in FIG. Fig.17 As shown, the controller controls the auxiliary lifting cylinder 30 to close;

[0097] S32, the piston rods of the two main lifting cylinders 27 of the control lifting mechanism 6 are extended upward, the piston rods drive the lifting plate 28 to move upward, the lifting plate 28 drives the hopper 29, the auxiliary lifting cylinder 30 and the topmost printed circuit board 1 to move upward synchronously, when the piston rod of the main lifting cylinder 27 is fully extended, the topmost printed circuit board 1 just enters the sink 12 of the clamping seat 11 of the clamping and conveying mechanism 5, as shown in FIG. Fig.18 As shown;

[0098] S33, control the piston rods of the two clamping cylinders 13 of the clamping and conveying mechanism 5 to retract, and the piston rods drive the clamping rods 14 to move synchronously, and the two clamping rods 14 move toward the printed circuit board 1. When the piston rods of the two clamping cylinders 13 are fully retracted, the topmost printed circuit board 1 is just clamped and fixed between the two clamping rods 14. Fig.19 As shown;

[0099] S34, control the piston rod of the main lifting cylinder 27 to retract downward, the piston rod drives the lifting plate 28 to move downward, the lifting plate 28 drives the silo 29 and the auxiliary lifting cylinder 30 to move downward synchronously, and then the silo 29 is reset. Fig. 20 As shown;

[0100] S35, control the servo motor 9 of the clamping and conveying mechanism 5 to start, the servo motor 9 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the clamping seat 11 to rotate synchronously, the clamping seat 11 drives the printed circuit board 1 clamped and fixed therein to rotate synchronously, when the printed circuit board 1 rotates 180°, the controller controls the servo motor 9 to turn off, at this time, the printed circuit board 1 is placed upwards, as shown in FIG. Fig.21 As shown;

[0101] S36, control the piston rod of the linear cylinder 8 of the clamping and conveying mechanism 5 to extend to the right, the piston rod drives the servo motor 9 and the clamping seat 11 to move to the right, the clamping seat 11 drives the printed circuit board 1 fixed therein to move to the right, when the piston rod of the linear cylinder 8 is fully extended, the printed circuit board 1 can be finally conveyed to the bottom of the hot pressing head 34 of the hot pressing mechanism 26, as shown in FIG. Fig. 22 As shown, at this time, the clamping seat 11 is just supported on the top surface of the machine table 15;

[0102] Among them, it can be known from step S3 that, only through the linkage cooperation of the lifting mechanism 6, the clamping and conveying mechanism 5, the printed boards 1 in the silo 29 can be directly conveyed one by one to the bottom of the hot pressing head 34 of the hot pressing mechanism 26, that is, the printed boards 1 are automatically conveyed to the hot pressing station. It can be seen that compared with the production method in the workshop, the hot pressing device does not need to manually place the printed board 1 flat on the hot pressing table, nor does it need to manually frequently adjust the position of the printed board 1 so that the printed board 1 is directly under the hot pressing head 34 of the hot press 33, thereby greatly reducing the work intensity of the workers, and at the same time, it also greatly shortens the production time of a single hard-soft circuit board, thereby greatly improving the production efficiency of hard-soft circuit boards.

[0103] S4, stacking the curing sheet 2 and the FPC board 3 in sequence on the top surface of the printed board 1, the specific operation steps are:

[0104] S41, control the piston rod of the vertical cylinder 19 of the stacking mechanism 7 to extend downward, the piston rod drives the stepper motor 20 to move downward, the stepper motor 20 drives the turntable 21, the left suction cup 22 and the right suction cup 23 to move downward synchronously, the left suction cup 22 drives the suction head A24 to move downward, the suction head A24 moves toward the top layer of the solidified sheet 2, at the same time, the right suction cup 23 drives the suction head B25 to move downward, the suction head B25 moves toward the top layer of the FPC board 3, when the piston rod of the vertical cylinder 19 extends to the set stroke, the controller controls the vertical cylinder 19 to close, at this time, the suction head A24 and the suction head B25 are in contact with the top surface of the top layer of the solidified sheet 2 and the top layer of the FPC board 3 respectively, as shown in FIG. Fig.23 As shown;

[0105] S42, control the vacuum pump A and vacuum pump B to start, vacuum pump A evacuates the left suction cup 22 and suction head A24, under negative pressure, the topmost cured sheet 2 is adsorbed and fixed on suction head A24; at the same time, vacuum pump B evacuates the right suction cup 23 and suction head B25, under negative pressure, the topmost FPC board 3 is adsorbed and fixed on suction head B25; then, control the piston rod of the vertical cylinder 19 to retract upward, the piston rod drives the stepper motor 20 to move upward, the stepper motor 20 drives the left suction cup 22 and the right suction cup 23 to move upward at the same time, the left suction cup 22 drives the suction head A24 and the cured sheet 2 to move upward, at the same time, the right suction cup 23 drives the suction head B25 and the FPC board 3 to move upward, as shown in FIG. Fig.24 As shown;

[0106] S43, the piston rod of the horizontal cylinder 17 of the stacking mechanism 7 is extended to the left, the piston rod drives the bracket 18 to move to the left, the bracket 18 drives the vertical cylinder 19, the stepper motor 20, the left suction cup 22 and the right suction cup 23 to move to the left synchronously, and then drives the curing sheet 2 and the FPC board 3 to move to the left. When the piston rod of the horizontal cylinder 17 is fully extended, the curing sheet 2 moves just above the printed circuit board 1, as shown in FIG. Fig.25 As shown;

[0107] S44, control the piston rod of the vertical cylinder 19 to extend downward, the piston rod drives the stepper motor 20 to move downward, the stepper motor 20 drives the turntable 21, the left suction cup 22 and the right suction cup 23 to move downward synchronously, and then drives the suction head A24 to move downward, the suction head A24 drives the cured sheet 2 to move toward the printed board 1, when the piston rod of the vertical cylinder 19 extends to the set stroke, the controller controls the vertical cylinder 19 to close, at this time, the cured sheet 2 just covers the top surface of the printed board 1, as shown in FIG. Figure 26-27 As shown;

[0108] S45, control the vacuum pump A to turn off, and then control the piston rod of the vertical cylinder 19 to retract upward, the piston rod drives the stepper motor 20 to move upward, the stepper motor 20 drives the turntable 21, the left suction cup 22 and the right suction cup 23 to move upward synchronously, and then drives the suction head A24 and the suction head B25 to move upward synchronously, and the suction head A24 moves away from the solidified sheet 2, such as Fig.28 As shown;

[0109] S46, control the stepper motor 20 to start, the stepper motor 20 drives the turntable 21 to rotate, the turntable 21 drives the left suction cup 22 and the right suction cup 23 to rotate synchronously, the right suction cup 23 drives the suction head B25 to rotate synchronously, the suction head B25 drives the FPC board 3 adsorbed and fixed thereon to rotate synchronously, when the FPC board 3 rotates 180°, the controller controls the stepper motor 20 to turn off, at this time, the FPC board 3 just moves to the top of the curing sheet 2, as shown in FIG. Fig.29 As shown;

[0110] S47, control the piston rod of the vertical cylinder 19 to extend downward, the piston rod drives the stepper motor 20 to move downward, the stepper motor 20 drives the turntable 21, the left suction cup 22 and the right suction cup 23 to move downward synchronously, and then drives the suction head B25 to move downward, the suction head B25 drives the FPC board 3 to move toward the curing sheet 2, when the piston rod of the vertical cylinder 19 extends to the set stroke, the controller controls the vertical cylinder 19 to close, at this time, the FPC board 3 just covers the top surface of the curing sheet 2, as shown in FIG. Fig.30 As shown;

[0111] S48, control the vacuum pump B to turn off, and then control the piston rod of the vertical cylinder 19 to retract upward, the piston rod drives the stepper motor 20 to move upward, the stepper motor 20 drives the turntable 21, the left suction cup 22 and the right suction cup 23 to move upward synchronously, and then drives the suction head A24 and the suction head B25 to move upward synchronously, and the suction head B25 moves away from the FPC board 3; then control the piston rod of the horizontal cylinder 17 to retract to the right, the piston rod drives the vertical cylinder 19, the left suction cup 22 and the right suction cup 23 to move to the right, as shown in FIG. Fig.31 As shown, the left suction cup 22 and the right suction cup 23 are moved away from the FPC board 3, thereby finally achieving the stacking of the curing sheet 2 and the FPC board 3 in sequence on the top surface of the printed circuit board 1;

[0112] S5, turn on the power supply, the power supply energizes the electric heating plate 35, when the electric heating plate 35 is energized, heat is generated on it, and the electric heating plate 35 transfers the heat to the hot pressing head 34; then the piston rod of the hot pressing machine 33 of the hot pressing mechanism 26 is controlled to extend downward, and the piston rod drives the hot pressing head 34 to move downward, and the hot pressing head 34 is pressed on the top surface of the FPC board 3, as shown in FIG. Figure 32~Figure 33 As shown, at the same time, the heat head 34 transfers the heat on the FPC board 3, and the FPC board 3 transfers the heat to the curing sheet 2. When the curing sheet 2 is heated, the heated curing sheet 2 connects the FPC board 3 and the printed circuit board 1 together, thereby producing the first soft-hard combination circuit board. The structure of the produced soft-hard combination circuit board is as shown in Figure 1~Figure 2 As shown;

[0113] S6, control the piston rods of the two clamping cylinders 13 to extend outward, the piston rods drive the clamping rod 14 to move outward, the clamping rod 14 moves toward the printed circuit board 1 away from the rigid-flexible circuit board, and then the worker takes the rigid-flexible circuit board out of the clamping seat 11;

[0114] S7. The worker repeats steps S3 to S6 for multiple times to continuously produce multiple rigid-flexible circuit boards.

[0115] Among them, it can be seen from the operation steps of steps S4 to S5 that the present heat pressing device only needs to automatically stack the curing sheet 2 and the printed board 1 on the top surface of the printed board 1 in sequence through the stacking mechanism 7, and then heat press the top surface of the FPC board 3 through the heat pressing head 34 of the heat pressing mechanism 26, so as to quickly produce the required hard-soft combination circuit board. It can be seen that compared with the production method in the workshop, the present heat pressing device does not need to manually stack the curing sheet 2 and the FPC board 3 on the printed board 1, but automatically stacks the materials, thereby greatly reducing the work intensity of the workers, and at the same time, it also greatly shortens the production time of a single hard-soft combination circuit board, thereby greatly improving the production efficiency of the hard-soft combination circuit board.

Claims

1. A hot pressing device for efficiently producing hard-flex circuit boards, characterized in that: It comprises a backing plate (4), on which are arranged, from left to right, a clamping and conveying mechanism (5) for clamping and rotating a printed circuit board (1), a lifting mechanism (6) for feeding the printed circuit board (1) to the clamping and conveying mechanism (5), and a stacking mechanism (7) for feeding a cured sheet (2) and an FPC board (3); The clamping and conveying mechanism (5) comprises a vertical plate fixedly mounted on the backing plate (4), a linear cylinder (8) fixedly mounted in the vertical plate, a servo motor (9) fixedly mounted on the active end of the piston rod of the linear cylinder (8), a rotating shaft (10) connected to the output shaft of the servo motor (9), a clamping seat (11) fixedly mounted on the right end of the rotating shaft (10), a sink groove (12) formed on the bottom surface of the clamping seat (11), clamping cylinders (13) fixedly mounted on the left and right outer end surfaces of the clamping seat (11), a clamping rod (14) fixedly mounted on the active end of the piston rod of the clamping cylinder (13), and the two clamping rods (14) are opposed to each other on the left and right sides; The stacking mechanism (7) comprises a machine table (15) fixedly mounted on a backing plate (4), a connecting plate (16) fixedly mounted on a right end surface of the machine table (15), and a horizontal cylinder (17) fixedly mounted on a right side wall of the connecting plate (16). The piston rod of the horizontal cylinder (17) penetrates the connecting plate (16) to the left, and a bracket (18) is fixedly mounted on the extended end. A vertical cylinder (19) is fixedly mounted on the top surface of the bracket (18). The piston rod of the vertical cylinder (19) penetrates the bracket (18) downward, and a stepping motor (20) is fixedly mounted on the extended end. A turntable (20) is mounted on the output shaft of the stepping motor (20). 1), a left suction cup (22) and a right suction cup (23) are welded on the left and right sides of the turntable (21), a suction head A (24) is fixedly provided on the bottom surface of the left suction cup (22) and on its left and right ends, and the left suction cup (22) is connected to the working port of the vacuum pump A; a suction head B (25) is fixedly provided on the bottom surface of the right suction cup (23) and on its left and right ends, and the right suction cup (23) is connected to the working port of the vacuum pump B; two positioning platforms (32) are fixedly provided on the top surface of the machine platform (15), and the two positioning platforms (32) are respectively located directly below the left suction cup (22) and the right suction cup (23); The top end of the connecting plate (16) is connected to a heat pressing mechanism (26) for applying pressure and heating to the FPC board (3). The heat pressing device also includes a controller, which is electrically connected to the heat press machine (33), the main lifting cylinder (27), the auxiliary lifting cylinder (30), the linear cylinder (8), the horizontal cylinder (17), the vertical cylinder (19), the servo motor (9) and the stepper motor (20) via signal lines.

2. According to claim 1, a hot pressing device for efficiently producing hard-flex circuit boards is characterized in that: The sink groove (12) matches the outer contour of the printed circuit board (1), and the depth of the sink groove (12) is less than the thickness of the printed circuit board (1).

3. A hot pressing device for efficiently producing hard-flex circuit boards according to claim 2, characterized in that: The lifting mechanism (6) comprises a main lifting cylinder (27) fixedly mounted on a pad (4), and a lifting plate (28) fixedly mounted on the action end of the piston rod of the main lifting cylinder (27); a material bin (29) located directly below the clamping seat (11) is fixedly mounted on the top surface of the lifting plate (28); the inner cavity of the material bin (29) matches the outer contour of the printed circuit board (1); a secondary lifting cylinder (30) is fixedly mounted on the bottom surface of the lifting plate (28); the piston rod of the secondary lifting cylinder (30) extends into the material bin (29), and a support plate (31) is connected to the extended end.

4. The hot pressing device for efficiently producing hard-flex circuit boards according to claim 3, characterized in that: Two main lifting cylinders (27) are fixedly arranged on the pad (4), and the lifting plate (28) is fixedly arranged between the piston rods of the two main lifting cylinders (27).

5. The hot pressing device for efficiently producing hard-flex circuit boards according to claim 4, characterized in that: The heat pressing mechanism (26) comprises a horizontal plate fixedly mounted on the top of the connecting plate (16), the horizontal plate extending to the left just above the machine platform (15), and a heat press (33) being fixedly mounted on the extended end, a piston rod of the heat press (33) penetrating downwardly through the horizontal plate, and a heat pressing head (34) being fixedly mounted on the extended end, an electric heating plate (35) being fixedly mounted on the top surface of the heat pressing head (34), and the electric heating plate (35) being connected to a power source.

6. A method for efficiently producing a hard-flex circuit board by hot pressing, using the hot pressing device for efficiently producing a hard-flex circuit board according to claim 5, characterized in that: It includes the following steps: S1. A worker pre-places a plurality of printed circuit boards (1) in a material bin (29) of a lifting mechanism (6), and the plurality of printed circuit boards (1) are stacked on a support plate (31) in sequence from bottom to top, wherein the topmost printed circuit board (1) is exactly flush with the top surface of the material bin (29); S2. The worker sequentially stacks a plurality of cured sheets (2) on the left positioning platform (32), at which time the topmost cured sheet (2) is just below the suction head A (24); and sequentially stacks a plurality of FPC boards (3) on the right positioning platform (32), at which time the topmost FPC board (3) is just below the suction head B (25); S3, conveying the topmost printed board (1) to the position directly below the hot pressing head (34) of the hot pressing mechanism (26), wherein the specific operation steps are as follows: S31, controlling the piston rod of the auxiliary lifting cylinder (30) of the lifting mechanism (6) to extend upward, the piston rod drives the support plate (31) to move upward, the support plate (31) drives each printed circuit board (1) stacked thereon to move upward, and when the topmost printed circuit board (1) is ejected to the outside of the silo (29), the controller controls the auxiliary lifting cylinder (30) to close; S32, the piston rods of the two main lifting cylinders (27) of the control lifting mechanism (6) are extended upward, the piston rods drive the lifting plate (28) to move upward, the lifting plate (28) drives the material bin (29), the auxiliary lifting cylinder (30) and the topmost printed circuit board (1) to move upward synchronously, and when the piston rods of the main lifting cylinders (27) are fully extended, the topmost printed circuit board (1) just enters the sink (12) of the clamping seat (11) of the clamping and conveying mechanism (5); S33, control the piston rods of the two clamping cylinders (13) of the clamping and conveying mechanism (5) to retract, and the piston rods drive the clamping rods (14) to move synchronously, and the two clamping rods (14) both move toward the printed circuit board (1). When the piston rods of the two clamping cylinders (13) are fully retracted, the topmost printed circuit board (1) is just clamped and fixed between the two clamping rods (14); S34, controlling the piston rod of the main lifting cylinder (27) to retract downward, so that the piston rod drives the lifting plate (28) to move downward, and the lifting plate (28) drives the silo (29) and the auxiliary lifting cylinder (30) to move downward synchronously, thereby resetting the silo (29); S35, controlling the servo motor (9) of the clamping and conveying mechanism (5) to start, the servo motor (9) drives the rotating shaft (10) to rotate, the rotating shaft (10) drives the clamping seat (11) to rotate synchronously, the clamping seat (11) drives the printed circuit board (1) clamped and fixed therein to rotate synchronously, when the printed circuit board (1) rotates 180°, the controller controls the servo motor (9) to turn off, at which time, the printed circuit board (1) is placed upward; S36, the piston rod of the linear cylinder (8) of the control clamping and conveying mechanism (5) is extended to the right, the piston rod drives the servo motor (9) and the clamping seat (11) to move to the right, the clamping seat (11) drives the printed circuit board (1) fixed therein to move to the right, when the piston rod of the linear cylinder (8) is fully extended, the printed circuit board (1) can be finally conveyed to the position directly below the hot pressing head (34) of the hot pressing mechanism (26), at which time the clamping seat (11) is just supported on the top surface of the machine table (15); S4, stacking the curing sheet (2) and the FPC board (3) in sequence on the top surface of the printed circuit board (1), wherein the specific operation steps are as follows: S41, the piston rod of the vertical cylinder (19) of the stacking mechanism (7) is extended downward, and the piston rod drives the stepper motor (20) to move downward. The stepper motor (20) drives the turntable (21), the left suction cup (22) and the right suction cup (23) to move downward synchronously. The left suction cup (22) drives the suction head A (24) to move downward, and the suction head A (24) moves toward the topmost cured sheet (2). At the same time, the right suction cup (23) drives the suction head B (25) to move downward, and the suction head B (25) moves toward the topmost FPC board (3). When the piston rod of the vertical cylinder (19) is extended to the set stroke, the controller controls the vertical cylinder (19) to close. At this time, the suction head A (24) and the suction head B (25) are in contact with the top surface of the topmost cured sheet (2) and the topmost FPC board (3), respectively. S42, control the vacuum pump A and vacuum pump B to start, vacuum pump A draws vacuum on the left suction cup (22) and suction head A (24), and under negative pressure, the topmost cured sheet (2) is adsorbed and fixed on suction head A (24); at the same time, vacuum pump B draws vacuum on the right suction cup (23) and suction head B (25), and under negative pressure, the topmost FPC board (3) is adsorbed and fixed on suction head B (25); then, control the piston rod of the vertical cylinder (19) to retract upward, the piston rod drives the stepper motor (20) to move upward, the stepper motor (20) drives the left suction cup (22) and the right suction cup (23) to move upward at the same time, the left suction cup (22) drives suction head A (24) and the cured sheet (2) to move upward, and at the same time, the right suction cup (23) drives suction head B (25) and the FPC board (3) to move upward; S43, the piston rod of the horizontal cylinder (17) of the stacking mechanism (7) is extended to the left, the piston rod drives the bracket (18) to move to the left, the bracket (18) drives the vertical cylinder (19), the stepper motor (20), the left suction cup (22) and the right suction cup (23) to move to the left synchronously, thereby driving the curing sheet (2) and the FPC board (3) to move to the left. When the piston rod of the horizontal cylinder (17) is fully extended, the curing sheet (2) moves just above the printed circuit board (1); S44, controlling the piston rod of the vertical cylinder (19) to extend downward, the piston rod drives the stepper motor (20) to move downward, the stepper motor (20) drives the turntable (21), the left suction cup (22) and the right suction cup (23) to move downward synchronously, and then drives the suction head A (24) to move downward, the suction head A (24) drives the cured sheet (2) to move toward the printed board (1), when the piston rod of the vertical cylinder (19) extends to the set stroke, the controller controls the vertical cylinder (19) to close, at which time, the cured sheet (2) just covers the top surface of the printed board (1); S45, control the vacuum pump A to be turned off, and then control the piston rod of the vertical cylinder (19) to retract upward, the piston rod drives the stepper motor (20) to move upward, the stepper motor (20) drives the turntable (21), the left suction cup (22) and the right suction cup (23) to move upward synchronously, and then drives the suction head A (24) and the suction head B (25) to move upward synchronously, and the suction head A (24) moves in a direction away from the solidified sheet (2); S46, controlling the stepper motor (20) to start, the stepper motor (20) drives the turntable (21) to rotate, the turntable (21) drives the left suction cup (22) and the right suction cup (23) to rotate synchronously, the right suction cup (23) drives the suction head B (25) to rotate synchronously, the suction head B (25) drives the FPC board (3) adsorbed and fixed thereon to rotate synchronously, when the FPC board (3) rotates 180°, the controller controls the stepper motor (20) to turn off, at which time, the FPC board (3) just moves to the top of the curing sheet (2); S47, controlling the piston rod of the vertical cylinder (19) to extend downward, the piston rod drives the stepper motor (20) to move downward, the stepper motor (20) drives the turntable (21), the left suction cup (22) and the right suction cup (23) to move downward synchronously, and then drives the suction head B (25) to move downward, the suction head B (25) drives the FPC board (3) to move toward the curing sheet (2), when the piston rod of the vertical cylinder (19) extends to the set stroke, the controller controls the vertical cylinder (19) to close, at which time, the FPC board (3) just covers the top surface of the curing sheet (2); S48, control the vacuum pump B to be turned off, and then control the piston rod of the vertical cylinder (19) to retract upward, the piston rod drives the stepper motor (20) to move upward, the stepper motor (20) drives the turntable (21), the left suction cup (22) and the right suction cup (23) to move upward synchronously, and then drives the suction head A (24) and the suction head B (25) to move upward synchronously, and the suction head B (25) moves in a direction away from the FPC board (3); then control the piston rod of the horizontal cylinder (17) to retract rightward, the piston rod drives the vertical cylinder (19), the left suction cup (22) and the right suction cup (23) to move rightward, so that the left suction cup (22) and the right suction cup (23) move in a direction away from the FPC board (3), thereby finally realizing the sequential stacking of the cured sheet (2) and the FPC board (3) on the top surface of the printed circuit board (1); S5, turning on the power supply, the power supply energizes the electric heating plate (35), when the electric heating plate (35) is energized, heat is generated on it, and the electric heating plate (35) transfers the heat to the hot pressing head (34); then the piston rod of the hot pressing machine (33) of the hot pressing mechanism (26) is controlled to extend downward, and the piston rod drives the hot pressing head (34) to move downward, and the hot pressing head is pressed on the top surface of the FPC board (3). At the same time, the hot pressing head (34) transfers the heat on it to the FPC board (3), and the FPC board (3) transfers the heat to the curing sheet (2). When the curing sheet (2) is heated, the heated curing sheet (2) fixes the FPC board (3) and the printed circuit board (1) together, thereby producing the first rigid-flexible circuit board; S6, controlling the piston rods of the two clamping cylinders (13) to extend outward, the piston rods drive the clamping rod (14) to move outward, and the clamping rod (14) moves in a direction away from the printed circuit board (1) of the rigid-flexible circuit board, and then the worker takes the rigid-flexible circuit board out of the clamping seat (11); S7. The worker repeats steps S3 to S6 for multiple times to continuously produce multiple rigid-flexible circuit boards.

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