FPC flexible circuit board automatic bending device and bending method thereof

Abstract

The invention relates to the technical field of circuit board bending, and discloses an FPC flexible circuit board automatic bending device and a bending method.The FPC flexible circuit board automatic bending device comprises a rail bar, the front side face of the rail bar is fixedly connected with a side fixing plate, the rear side face of the rail bar is fixedly connected with a material box fixing plate, and an overturning assembly is arranged above the rail bar; the guide rail is fixedly connected to the surface of the rail bar, the standing sliding bar is fixedly connected to the surface of the guide rail, the overturning tooth groove is formed in the middle of the surface of the standing sliding bar, the sliding rail base is slidably connected to the outer side face of the guide rail, and the overturning plate slides through the spline rod and the overturning shaft so that the overturning plate can be separated from the folded flexible circuit board. The steps of the driving structure are simplified through structure operation linkage, the machining efficiency is improved, meanwhile, the spline rod rotates to drive the overturning plate to overturn, the flexible circuit board is overturned and folded, and the folding mode can prevent the protection arc at the bent position from being excessively pressed to cause circuit breakage.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board bending, and in particular to an automatic bending device for an FPC flexible circuit board and a bending method thereof. Background Art

[0002] Flexible circuit board is a circuit board with flexible substrate, which is mainly composed of conductive copper foil, insulating material and cover layer. Due to its flexible and thin characteristics, FPCB is often used in applications with limited space or need to bend, such as mobile phones, cameras and wearable devices. The bending of flexible circuit boards requires a systematic approach and strict quality control in the design, manufacturing and testing stages to ensure that it exhibits good flexibility and reliability in practical applications.

[0003] The patent with application number CN202310303798.6 discloses an automatic bending mechanism for FPC flexible circuit boards, including: a bending positioning device, including a correction mechanism and a U-shaped folding positioning avoidance mechanism; a 90° folding device, including a folding lower platform mechanism and a flip lifting mechanism; a 180° folding device, including a lower platform, a folding mechanism, an upper lifting mechanism and a core pulling and pressing mechanism; a 90° U-shaped folding device, including a folding forming mechanism, a three-fold lifting mechanism and a positioning U-shaped mechanism. The problem that the existing FPC is difficult to bend or easy to rebound after bending during the automatic bending process is solved; the automatic bending of the FPC flexible circuit board is realized without excessive manual participation, and the FPC can be quickly bent according to actual needs, and it is not easy to move or rebound, ensuring that each FPC has the same shape and size after bending.

[0004] The quick flipping of the patent cannot prevent the problem of excessive pressure on the flipping part of the flexible circuit board causing breakage. Therefore, it is necessary to design an automatic bending device and a bending method for FPC flexible circuit boards that can prevent excessive pressure on the flipping part. Summary of the invention

[0005] The object of the present invention is to provide an FPC flexible circuit board automatic bending device and a bending method thereof to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an automatic bending device for FPC flexible circuit board, comprising a rail, the front side of the side of the rail is fixedly connected to a side fixing plate, the rear side of the rail is fixedly connected to a material box fixing plate, a flip assembly is arranged above the rail, the flip assembly comprises a guide rail, a static slide bar, a flip tooth groove, a slide rail seat, a flip shaft, a spline rod, a flip gear, a flip plate, a driving pull rod, a guide slide plate, and a guide rod, the guide rail is fixedly connected to the surface of the rail, the static slide bar is fixedly connected to the surface of the guide rail, and the flip tooth groove The cam is provided in the middle position of the surface of the stationary slide bar, the slide rail seat is slidably connected to the outer side surface of the guide rail, the flip shaft is rotatably connected to the inner side of the slide rail seat, the spline rod is slidably connected to the inner side of the flip shaft, the flip gear is fixedly connected to the outer side surface of the flip shaft, the flip plate is fixedly connected to the side surface of the spline rod, the driving pull rod is fixedly connected to the right side surface of the slide rail seat, the guide slide plate is slidably connected to the side surface of the slide rail seat, the guide rod is fixedly connected to the side surface of the rail, the spline rod is rotatably connected to the guide slide plate, the flip gear is rotatably connected to the slide rail seat, and the right side of the rail The surface is fixedly connected with a sliding shaft seat, and the sliding shaft seat is slidably connected to the driving pull rod. When moving, the external hydraulic cylinder is connected to the driving pull rod, and the driving pull rod is pulled by the hydraulic cylinder to make the slide rail seat slide along the top of the guide rail. At this time, the slide rail seat is on the static slide bar on the left, and the slide rail seat slides along the guide rod through the connected guide slide plate, so that the guide slide plate extends forward with the movement of the slide rail seat to push the spline rod and the flip shaft to slide, so that the spline rod pushes the flip plate to extend forward and insert it into the bottom side of the flexible circuit board. When the slide rail seat moves to the top of the static slide bar at the right end, the flip gear on the inside of the slide rail seat is connected to the static slide bar through the surface. The fit stops rotation again, and the guide slide plate and the guide rod slide, and the flip plate slides through the spline rod and the flip shaft to make the flip plate separate from the folded flexible circuit board. The driving structure steps are simplified through the structural operation linkage, and the processing efficiency is improved. At the same time, when the flip gear on the inner side of the slide rail seat moves to the flip tooth groove on the guide rail surface, the side surface of the flip gear meshes with the flip tooth groove and drives the flip shaft and the spline rod to rotate, so that the spline rod rotates to drive the flip plate to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bending point from being over-pressed and causing the line to break.

[0007] The front side of the slide rail seat is provided with a pushing structure, and the pushing structure includes a linkage push rod, a contraction sliding rod, a blocking rod, a flip push rod, a linkage swing rod, a sliding groove connecting piece, and a support plate. The linkage push rod is fixedly connected to the surface of the slide rail seat, the contraction sliding rod is slidably connected to the outer side surface of the linkage push rod, the blocking rod is fixedly connected to the surface of the side fixing plate, the flip push rod is rotatably connected to the upper surface of the side fixing plate, the linkage swing rod is hingedly connected to the surface of the flip push rod, the sliding groove connecting piece is slidably connected to the surface of the side fixing plate, and the support plate is slidably connected to the ground of the side fixing plate. A spring is provided on the outer side of the linkage push rod, and two ends of the spring are respectively fixedly connected to the linkage push rod and the contraction sliding rod, a torsion spring is provided at the bottom end of the flip push rod, and two ends of the torsion spring are respectively fixedly connected to the flip push rod and the surface of the side fixing plate, the sliding groove connecting piece and the linkage swing rod When the sliding rail seat moves to the right, it will drive the connected linkage push rod, so that the linkage push rod provides support for the retracting slide rod through the elastic force of the outer spring, so that the retracting slide rod can flip the flip push rod after touching the flip push rod and drive the torsion spring to flip, so that the bottom extension structure of the flip push rod is retracted backward after the flip push rod is flipped, until the top structure of the flip push rod is blocked by the blocking rod, and when the sliding rail seat slides from the right end to the left end of the rail, the flip push rod is no longer contacted by the end of the retracting slide rod, so that the flip push rod is reset under the action of the torsion spring and pushes the folded flexible circuit board to the specified position, realizing the function of automatic discharging. At the same time, when the flip push rod is deflected, it will drive the linkage swing rod to move, and slide through the sliding groove connecting piece sliding on the outside of the linkage swing rod, so that the sliding groove connecting piece drives the support plate to move to the bottom of the flexible circuit board, which supports the bending of the flexible circuit board.

[0008] The front side of the material box solid plate is provided with an adhesive structure, and the adhesive structure includes a push cylinder rod, a material barrel, a feeding pipe, a push cylinder fixing sheet, an adhesive material box, an oscillation plate, and an oscillation bar. The push cylinder rod is fixedly connected to the side of the linkage push rod, the material barrel is fixedly connected to the right end of the push cylinder rod, the feeding pipe is fixedly connected to the left end of the material barrel, the push rod fixing sheet is fixedly connected to the side of the baffle rod, the adhesive material box is fixedly connected to the front top of the material box solid plate, the oscillation plate is fixedly connected to the side of the linkage push rod, the oscillation bar is fixedly connected to the bottom surface of the adhesive material box, the oscillation bar and the oscillation plate are in contact with each other, the adhesive material box is connected to the material barrel, the material barrel is connected to the feeding pipe, and the feeding The end of the tube extends to the flip plate, and the side of the flip plate is fixedly connected to the coating tube, and the coating tube is connected to the feed tube. At the same time, a small discharge hole is provided on the surface of the coating tube. When the linkage push rod moves, it will drive the push barrel rod to move, and push the barrel to the side of the push rod fixed plate through the push barrel rod, so that the material from the adhesive box entering the barrel is output to the side of the flip plate through the one-way valve and the feed tube in the barrel. By spraying materials, the flexible circuit board is assisted to fit after folding, and the flexible circuit board is prevented from being detached by elasticity after flipping. At the same time, when the linkage push rod moves, it will drive the oscillation plate, so that the oscillation plate moves and contacts with the oscillation bar on the bottom side of the adhesive box, so that the adhesive box vibrates to prevent the adhesive box from being blocked when unloading.

[0009] The right end of the side fixed plate is provided with a feeding structure, and the feeding structure includes a rotating shaft frame, a rotating belt shaft, a transmission belt, a fixed groove bar, a pressure strip, a flexible plate, and an adhesive block. The rotating shaft frame is fixedly connected to the side surface of the side fixed plate, the rotating belt shaft is rotatably connected to the inner side of the rotating shaft frame, the transmission belt is rotatably connected to the outer side of the rotating belt shaft, the fixed groove bar is fixedly connected to the outer surface of the transmission belt, the pressure strip is slidably connected to the inner side of the fixed groove bar, the flexible plate is arranged on the inner side of the pressure strip, the adhesive block is fixedly connected to the surface of the flexible plate, and the The pressing strip is fitted with the outer edge of the flexible board, and the flexible board is located directly below the side fixing plate. When the external motor drives the rotating belt shaft inside the rotating shaft frame to rotate, the rotation of the rotating belt shaft will drive the outer transmission belt to rotate, and the pressing strip will be inserted into the inner side of the fixing groove strip through the fixing groove strip on the side of the transmission belt. The flexible board clamped by the pressing strip will be fixed by the pressing strip passing through the inner side of the fixing groove strip. The smeared material will be applied to the adhesive block. After the flexible board, i.e. the flexible circuit board, is flipped over, the material on the adhesive block will be fitted with the flexible board to achieve fixation.

[0010] A bending method of an FPC flexible circuit board automatic bending device, comprising: S1: First, the external hydraulic cylinder is connected to the driving rod, and the driving rod is pulled by the hydraulic cylinder to make the slide rail seat slide along the top of the guide rail. At this time, the slide rail seat is on the static slide bar on the left, and the slide rail seat slides along the guide rod through the connected guide slide. The guide slide extends forward along with the movement of the slide rail seat to push the spline rod and the flip shaft to slide, so that the spline rod pushes the flip plate to extend forward and insert it into the bottom side of the flexible circuit board; S2: Then, when the flip gear on the inner side of the slide rail seat moves to the flip tooth groove on the surface of the guide rail, the side of the flip gear meshes with the flip tooth groove and drives the flip shaft and the spline rod to rotate, so that the spline rod rotates to drive the flip plate to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bend from being over-pressed and causing the circuit to break; S3: Then, when the slide rail seat moves to the top of the static slide bar at the right end, the flip gear on the inner side of the slide rail seat stops rotating again by fitting the surface with the static slide bar, and slides through the guide slide plate and the guide rod, and slides the flip plate through the spline rod and the flip shaft to make the flip plate detach from the folded flexible circuit board. The driving structure steps are simplified through the structural operation linkage, and the processing efficiency is improved; S4: After that, the bottom extension structure of the flip push rod is flipped and retracted backward until the top structure of the flip push rod is blocked by the blocking rod. When the slide rail seat slides from the right end to the left end of the rail, the flip push rod is no longer contacted by the end of the retracted slide rod. The flip push rod is reset under the action of the torsion spring to push the folded flexible circuit board to the specified position. S5: The barrel is pushed toward the side of the push rod fixing plate by the barrel push rod, so that the material from the adhesive box entering the barrel is output to the side of the flip plate through the one-way valve and the feed pipe in the barrel, and the flexible circuit board is assisted to fit after folding by spraying the material; S6: Finally, the pressing strip is inserted into the inner side of the fixing strip through the fixing strip on the side of the transmission belt, and the flexible board clamped by the pressing strip will be fixed by the pressing strip passing through the inner side of the fixing strip, and the smeared material will be smeared on the adhesive block. After the flexible board, i.e. the flexible circuit board, is turned over, the material on the adhesive block is bonded to the flexible board to achieve fixation.

[0011] Compared with the prior art, the beneficial effects achieved by the present invention are: The present invention is provided with a flip assembly, and the flip plate is slid through the spline rod and the flip shaft to make the flip plate detach from the folded flexible circuit board, and the driving structure steps are simplified through the structural operation linkage, and the processing efficiency is improved. At the same time, the spline rod is rotated to drive the flip plate to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bending point from being over-pressed and causing the circuit to break; The present invention is provided with a pushing structure, so that the flip push rod is reset under the action of the torsion spring to push the folded flexible circuit board to a specified position, thereby realizing the function of automatic discharging. At the same time, when the flip push rod is deflected, it drives the linkage swing rod to move, and slides through the sliding groove connecting piece sliding on the outer side of the linkage swing rod, so that the sliding groove connecting piece drives the support plate to move to the bottom of the flexible circuit board, thereby playing a supporting role for the bending of the flexible circuit board. The present invention is provided with an adhesive structure, and the material is sprayed to assist the flexible circuit board to be attached after being folded, so as to prevent the flexible circuit board from being separated by elasticity after being turned over. At the same time, when the linkage push rod moves, it will drive the oscillation plate to move and contact the oscillation strip on the bottom side of the adhesive material box, so that the adhesive material box vibrates, and the adhesive material box is prevented from being blocked when unloading. The present invention is provided with a feeding structure, and the flexible board clamped by the pressing strip will be fixed by the pressing strip passing through the inner side of the fixed groove strip, and the smeared material will be smeared on the adhesive block. After the flexible board, i.e. the flexible circuit board, is flipped over, the material on the adhesive block is fixed after being bonded to the flexible board. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0013] In the attached picture: Figure 1 It is a schematic diagram of the overall front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall rear-view stereo structure of the present invention; Figure 3 It is a structural schematic diagram of the flip assembly of the present invention; Figure 4 It is a structural schematic diagram of the material pushing structure of the present invention; Figure 5 It is a structural schematic diagram of the bonding structure and the feeding structure of the present invention; Figure 6 The present invention Figure 5 A is a schematic diagram of the enlarged structure of the middle part; Figure 7 The present invention Figure 5 A schematic diagram of the enlarged structure of B; In the figure: 1, rail; 2, side fixing plate; 3, material box fixing plate; 4, flip assembly; 41, guide rail; 42, static slide bar; 43, flip tooth groove; 44, slide rail seat; 45, flip shaft; 46, spline rod; 47, flip gear; 48, flip plate; 49, driving rod; 410, guide slide; 411, guide rod; 5, pusher structure; 51, linkage push rod; 52, contraction slide rod; 53, stop rod; 54, Flip push rod; 55, linkage rocker rod; 56, sliding groove connecting piece; 57, support plate; 6, bonding structure; 61, push barrel rod; 62, barrel; 63, feed pipe; 64, push rod fixing piece; 65, adhesive material box; 66, oscillation plate; 67, oscillation bar; 8, feeding structure; 81, rotating shaft frame; 82, rotating belt shaft; 83, transmission belt; 84, fixing groove bar; 85, pressing strip; 86, flexible plate; 87, bonding block. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-7One embodiment of the present invention is an automatic bending device for an FPC flexible circuit board, comprising a rail 1, a side fixing plate 2 is fixedly connected to the front side of the side of the rail 1, a material box fixing plate 3 is fixedly connected to the rear side of the rail 1, a flip assembly 4 is arranged above the rail 1, and the flip assembly 4 comprises a guide rail 41, a stationary slide bar 42, a flip tooth groove 43, a slide rail seat 44, a flip shaft 45, a spline rod 46, a flip gear 47, a flip plate 48, a driving pull rod 49, a guide slide plate 410, and a guide rod 411. The guide rail 41 is fixedly connected to the surface of the rail 1, the stationary slide bar 42 is fixedly connected to the surface of the guide rail 41, and the flip tooth groove 43 is arranged in the middle position of the surface of the stationary slide bar 42. The guide rail 41 is slidably connected to the outer side of the guide rail 41, the flip shaft 45 is rotatably connected to the inner side of the guide rail 41, the spline rod 46 is slidably connected to the inner side of the flip shaft 45, the flip gear 47 is fixedly connected to the outer side of the flip shaft 45, the flip plate 48 is fixedly connected to the side of the spline rod 46, the driving pull rod 49 is fixedly connected to the right side of the guide rail 410, the guide rod 411 is fixedly connected to the side of the rail 1, the spline rod 46 is rotatably connected to the guide slide 410, the flip gear 47 is rotatably connected to the guide rail 410, the slide shaft seat is fixedly connected to the right side of the rail 1, and the slide shaft seat is connected to the driving pull rod 49. The sliding connection is connected during movement. The external hydraulic cylinder is connected to the driving rod 49, and the driving rod 49 is pulled by the hydraulic cylinder to make the slide rail seat 44 slide along the top of the guide rail 41. At this time, the slide rail seat 44 is on the static slide bar 42 on the left. The slide rail seat 44 slides along the guide rod 411 through the connected guide slide plate 410, so that the guide slide plate 410 extends forward with the movement of the slide rail seat 44 to push the spline rod 46 and the flip shaft 45 to slide, so that the spline rod 46 pushes the flip plate 48 to extend forward and insert it into the bottom side of the flexible circuit board. When the slide rail seat 44 moves to the top of the static slide bar 42 at the right end, the flip gear 47 on the inside of the slide rail seat 44 stops again through the surface fitting with the static slide bar 42. The guide plate 410 and the guide rod 411 are used to slide the flip plate 48, and the flip plate 48 is slid through the spline rod 46 and the flip shaft 45 to separate the flip plate 48 from the folded flexible circuit board. The driving structure steps are simplified through the structural operation linkage, and the processing efficiency is improved. At the same time, when the flip gear 47 on the inner side of the slide rail seat 44 moves to the flip tooth groove 43 on the surface of the guide rail 41, the side surface of the flip gear 47 meshes with the flip tooth groove 43 and drives the flip shaft 45 and the spline rod 46 to rotate, so that the spline rod 46 rotates to drive the flip plate 48 to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bending point from being over-pressed and causing the line to break.

[0016] The front side of the slide rail seat 44 is provided with a pushing structure 5, which includes a linkage push rod 51, a contraction slide rod 52, a stop rod 53, a flip push rod 54, a linkage swing rod 55, a sliding groove connecting piece 56, and a support plate 57. The linkage push rod 51 is fixedly connected to the surface of the slide rail seat 44, the contraction slide rod 52 is slidably connected to the outer side surface of the linkage push rod 51, the stop rod 53 is fixedly connected to the surface of the side fixed plate 2, the flip push rod 54 is rotatably connected to the upper surface of the side fixed plate 2, the linkage swing rod 55 is hingedly connected to the surface of the flip push rod 54, the sliding groove connecting piece 56 is slidably connected to the surface of the side fixed plate 2, and the support plate 57 is slidably connected to the ground of the side fixed plate 2. A spring is provided on the outer side surface of the linkage push rod 51, and the two ends of the spring are respectively fixedly connected to the linkage push rod 51 and the contraction slide rod 52. A torsion spring is provided at the bottom end of the flip push rod 54, and the two ends of the torsion spring are respectively fixedly connected to the flip push rod 54 and the surface of the side fixed plate 2. The sliding groove connecting piece 56 is slidably connected to the linkage swing rod 55 When the slide rail seat 44 moves to the right, it will drive the connected linkage push rod 51, so that the linkage push rod 51 provides support for the retracting slide rod 52 through the outer spring force, so that the retracting slide rod 52 can flip the flip push rod 54 and drive the torsion spring to flip, so that the bottom end extension structure of the flip push rod 54 is retracted backward after the flip push rod 54 is flipped, until the top structure of the flip push rod 54 is blocked by the blocking rod 53. When the slide rail seat 44 slides from the right end to the left end of the track 1, at this time, the flip push rod 54 is no longer contacted by the end of the retracting slide rod 52, so that the flip push rod 54 is reset under the action of the torsion spring and pushes the folded flexible circuit board to the specified position, realizing the function of automatic discharging. At the same time, when the flip push rod 54 is deflected, it will drive the linkage swing rod 55 to move, and slide through the sliding groove connecting piece 56 sliding on the outer side of the linkage swing rod 55, so that the sliding groove connecting piece 56 drives the support plate 57 to move to the bottom of the flexible circuit board, which plays a supporting role in the bending of the flexible circuit board.

[0017] Working principle: during movement, the external hydraulic cylinder is connected to the driving rod 49, and the driving rod 49 is pulled by the hydraulic cylinder to make the slide rail seat 44 slide along the top of the guide rail 41. At this time, the slide rail seat 44 is on the static slide bar 42 on the left, and the slide rail seat 44 slides along the guide rod 411 through the connected guide slide plate 410, so that the guide slide plate 410 extends forward with the movement of the slide rail seat 44 to push the spline rod 46 and the flip shaft 45 to slide, so that the spline rod 46 pushes the flip plate 48 to extend forward and insert it into the bottom side of the flexible circuit board. When the slide rail seat 44 moves to the top of the static slide bar 42 at the right end, the flip gear 47 on the inside of the slide rail seat 44 stops again through the surface fitting with the static slide bar 42. The guide plate 410 and the guide rod 411 are slid to slide the flip plate 48 through the spline rod 46 and the flip shaft 45 to make the flip plate 48 detach from the folded flexible circuit board. The driving structure steps are simplified through the structural operation linkage, and the processing efficiency is improved. At the same time, when the flip gear 47 on the inner side of the slide rail seat 44 moves to the flip tooth groove 43 on the surface of the guide rail 41, the side of the flip gear 47 meshes with the flip tooth groove 43 and drives the flip shaft 45 and the spline rod 46 to rotate, so that the spline rod 46 rotates to drive the flip plate 48 to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bend from being over-pressed and causing the circuit to break. When the slide rail seat 44 moves to the right, it will drive the connected linkage push rod 51, so that the linkage push rod 51 provides support for the retracting slide rod 52 through the outer spring force, so that the retracting slide rod 52 can flip the flip push rod 54 and drive the torsion spring to flip after touching the flip push rod 54, so that the bottom end extension structure of the flip push rod 54 is retracted backward after flipping, until the top structure of the flip push rod 54 is blocked by the blocking rod 53. When the slide rail seat 44 slides from the right end to the left end of the rail 1, at this time, the flip push rod 54 is no longer contacted by the end of the retracting slide rod 52, so that the flip push rod 54 is reset under the action of the torsion spring and pushes the folded flexible circuit board to the specified position, realizing the function of automatic discharging. At the same time, when the flip push rod 54 is deflected, it will drive the linkage swing rod 55 to move, and slide through the sliding groove connecting piece 56 sliding on the outer side of the linkage swing rod 55, so that the sliding groove connecting piece 56 drives the support plate 57 to move to the bottom of the flexible circuit board, which plays a supporting role in the bending of the flexible circuit board.

[0018] See also Figure 1-7On the basis of the above embodiment, in another embodiment of the present invention, a bonding structure 6 is provided on the front side of the material box fixed plate 3, and the bonding structure 6 includes a push rod 61, a material barrel 62, a feeding pipe 63, a push rod fixing piece 64, an adhesive material box 65, an oscillation plate 66, and an oscillation bar 67. The push rod 61 is fixedly connected to the side of the linkage push rod 51, the material barrel 62 is fixedly connected to the right end of the push rod 61, the feeding pipe 63 is fixedly connected to the left end of the material barrel 62, the push rod fixing piece 64 is fixedly connected to the side of the blocking rod 53, the adhesive material box 65 is fixedly connected to the front top of the material box fixed plate 3, the oscillation plate 66 is fixedly connected to the side of the linkage push rod 51, the oscillation bar 67 is fixedly connected to the bottom surface of the adhesive material box 65, the oscillation bar 67 and the oscillation plate 66 are in contact with each other, the adhesive material box 65 is connected to the material barrel 62, and the material barrel 62 is connected to the feeding pipe 63. The end of the feed pipe 63 extends to the flip plate 48, and the side of the flip plate 48 is fixedly connected to the coating pipe, and the coating pipe is connected to the feed pipe 63. At the same time, a small discharge hole is provided on the surface of the coating pipe. When the linkage push rod 51 moves, it will drive the push cylinder rod 61 to move, and push the barrel 62 to the side of the push rod fixed plate 64 through the push cylinder rod 61, so that the adhesive box 65 can enter the barrel 62. The material is output to the side of the flip plate 48 through the one-way valve and the feed pipe 63 in the barrel 62, and the flexible circuit board is assisted to fit after folding by spraying materials, so as to prevent the flexible circuit board from being detached by elasticity after flipping. At the same time, when the linkage push rod 51 moves, it will drive the oscillation plate 66, so that the oscillation plate 66 moves and contacts with the oscillation bar 67 on the bottom side of the adhesive box 65, so that the adhesive box 65 vibrates to prevent the adhesive box 65 from being blocked when unloading.

[0019] A feeding structure 8 is provided at the right end of the side fixing plate 2, and the feeding structure 8 includes a rotating shaft frame 81, a rotating belt shaft 82, a transmission belt 83, a fixed groove bar 84, a pressing strip 85, a flexible plate 86, and an adhesive block 87. The rotating shaft frame 81 is fixedly connected to the side of the side fixing plate 2, the rotating belt shaft 82 is rotatably connected to the inner side of the rotating shaft frame 81, the transmission belt 83 is rotatably connected to the outer side of the rotating belt shaft 82, the fixed groove bar 84 is fixedly connected to the outer surface of the transmission belt 83, the pressing strip 85 is slidably connected to the inner side of the fixed groove bar 84, the flexible plate 86 is arranged on the inner side of the pressing strip 85, the adhesive block 87 is fixedly connected to the surface of the flexible plate 86, and the pressing strip 85 is The outer edges of the flexible plate 86 are in contact with each other, and the flexible plate 86 is located directly below the side fixing plate 2. When the external motor drives the rotating belt shaft 82 on the inner side of the rotating shaft frame 81 to rotate, the rotation of the rotating belt shaft 82 will drive the outer transmission belt 83 to rotate, and through the fixed groove bar 84 on the side of the transmission belt 83, the pressing strip 85 is inserted into the inner side of the fixed groove bar 84, and the flexible plate 86 clamped by the pressing strip 85 will be fixed by the pressing strip 85 passing through the inner side of the fixed groove bar 84, and the smeared material will be smeared on the adhesive block 87. After the flexible plate 86, i.e. the flexible circuit board, is flipped over, the material on the adhesive block 87 will be fixed after being fitted with the flexible plate 86.

[0020] Working principle: when the linkage push rod 51 moves, it will drive the push rod 61 to move, and push the barrel 62 to the side of the push rod fixed plate 64 through the push rod 61, so that the material of the adhesive material box 65 entering the barrel 62 is output to the side of the flip plate 48 through the one-way valve and the feed pipe 63 in the barrel 62, and the flexible circuit board is assisted to fit after folding by spraying materials, so as to prevent the flexible circuit board from being separated by elasticity after flipping. At the same time, when the linkage push rod 51 moves, it will drive the oscillation plate 66, so that the oscillation plate 66 moves and contacts with the oscillation bar 67 on the bottom side of the adhesive material box 65, so that the adhesive material box 65 vibrates, so as to prevent the adhesive material box 65 from being blocked when unloading; When the external motor drives the rotating belt shaft 82 on the inner side of the rotating shaft frame 81 to rotate, the rotation of the rotating belt shaft 82 will drive the outer transmission belt 83 to rotate, and the pressing strip 85 will be inserted into the inner side of the fixed groove strip 84 through the fixed groove strip 84 on the side of the transmission belt 83. The flexible board 86 clamped by the pressing strip 85 will be fixed by the pressing strip 85 passing through the inner side of the fixed groove strip 84, and the smeared material will be smeared on the adhesive block 87. After the flexible board 86, i.e. the flexible circuit board, is flipped over, the material on the adhesive block 87 will be fixed after being fitted with the flexible board 86.

[0021] A bending method of an FPC flexible circuit board automatic bending device, characterized by comprising: S1: First, the external hydraulic cylinder is connected to the driving rod 49, and the driving rod 49 is pulled by the hydraulic cylinder to make the slide rail seat 44 slide along the upper side of the guide rail 41. At this time, the slide rail seat 44 is on the static slide bar 42 on the left side. The slide rail seat 44 slides along the guide rod 411 through the connected guide slide plate 410, so that the guide slide plate 410 extends forward along with the movement of the slide rail seat 44 to push the spline rod 46 and the flip shaft 45 to slide, so that the spline rod 46 pushes the flip plate 48 to extend forward and insert it into the bottom side of the flexible circuit board; S2: Then, when the flip gear 47 on the inner side of the slide rail seat 44 moves to the flip tooth groove 43 on the surface of the guide rail 41, the side surface of the flip gear 47 meshes with the flip tooth groove 43 and drives the flip shaft 45 and the spline rod 46 to rotate, so that the spline rod 46 rotates to drive the flip plate 48 to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bend from being over-pressed and causing the circuit to break; S3: Then, when the slide rail seat 44 moves to the top of the static slide bar 42 at the right end, the flip gear 47 inside the slide rail seat 44 stops rotating again by contacting with the static slide bar 42 on the surface, and slides through the guide slide plate 410 and the guide rod 411, and slides the flip plate 48 through the spline rod 46 and the flip shaft 45 to make the flip plate 48 detach from the folded flexible circuit board, and simplifies the driving structure steps through the structural operation linkage, and improves the processing efficiency; S4: After that, the bottom extension structure of the flip push rod 54 is flipped and retracted backward until the top structure of the flip push rod 54 is blocked by the blocking rod 53. When the slide rail seat 44 slides from the right end to the left end of the rail 1, the flip push rod 54 is no longer contacted by the end of the retractable slide rod 52. The flip push rod 54 is reset under the action of the torsion spring to push the folded flexible circuit board to the specified position. S5: The barrel 62 is pushed toward the side of the push rod fixing plate 64 by the barrel push rod 61, so that the material from the adhesive material box 65 entering the barrel 62 is output to the side of the flip plate 48 through the one-way valve and the feed pipe 63 in the barrel 62, and the flexible circuit board is assisted to fit after folding by spraying the material; S6: Finally, the pressing strip 85 is inserted into the inner side of the fixing strip 84 through the fixing strip 84 on the side of the transmission belt 83, and the flexible board 86 clamped by the pressing strip 85 will be fixed by the pressing strip 85 passing through the inner side of the fixing strip 84, and the smeared material will be smeared on the adhesive block 87. After the flexible board 86, i.e. the flexible circuit board, is flipped over, the material on the adhesive block 87 is fitted with the flexible board 86 to achieve fixation.

[0022] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic bending device for flexible printed circuit boards, comprising a rail (1), characterized in that: The front side of the side of the rail (1) is fixedly connected to a side fixing plate (2), the rear side of the rail (1) is fixedly connected to a material box fixing plate (3), and a flip assembly (4) is arranged above the rail (1), and the flip assembly (4) comprises a guide rail (41), a stationary slide bar (42), a flip tooth groove (43), a slide rail seat (44), a flip shaft (45), a spline rod (46), a flip gear (47), a flip plate (48), a driving pull rod (49), a guide slide plate (410), and a guide rod (411), wherein the guide rail (41) is fixedly connected to the surface of the rail (1), the stationary slide bar (42) is fixedly connected to the surface of the guide rail (41), and the flip tooth groove (43) is opened in the middle position of the surface of the stationary slide (42), the slide rail seat (44) is slidably connected to the outer side of the guide rail (41), the flip shaft (45) is rotatably connected to the inner side of the slide rail seat (44), the spline rod (46) is slidably connected to the inner side of the flip shaft (45), the flip gear (47) is fixedly connected to the outer side of the flip shaft (45), the flip plate (48) is fixedly connected to the side of the spline rod (46), the drive pull rod (49) is fixedly connected to the right side of the slide rail seat (44), the guide slide plate (410) is slidably connected to the side of the slide rail seat (44), and the guide rod (411) is fixedly connected to the side of the rail (1).

2. The FPC flexible circuit board automatic bending device according to claim 1, characterized in that: The spline rod (46) is rotationally connected to the guide slide plate (410), the flip gear (47) is rotationally connected to the slide rail seat (44), the right side surface of the rail (1) is fixedly connected to a slide shaft seat, and the slide shaft seat is slidably connected to the driving pull rod (49).

3. The FPC flexible circuit board automatic bending device according to claim 2, characterized in that: A material pushing structure (5) is arranged at the front side of the slide rail seat (44), and the material pushing structure (5) comprises a linkage push rod (51), a retractable slide rod (52), a stop rod (53), a flip push rod (54), a linkage swing rod (55), a sliding groove connecting piece (56), and a support plate (57). The linkage push rod (51) is fixedly connected to the surface of the slide rail seat (44), the retractable slide rod (52) is slidably connected to the outer side surface of the linkage push rod (51), the stop rod (53) is fixedly connected to the surface of the side fixing plate (2), the flip push rod (54) is rotatably connected to the upper surface of the side fixing plate (2), the linkage swing rod (55) is hingedly connected to the surface of the flip push rod (54), the sliding groove connecting piece (56) is slidably connected to the surface of the side fixing plate (2), and the support plate (57) is slidably connected to the ground of the side fixing plate (2).

4. The FPC flexible circuit board automatic bending device according to claim 3, characterized in that: A spring is disposed on the outer side surface of the linkage push rod (51), and the two ends of the spring are respectively fixedly connected to the linkage push rod (51) and the retractable slide rod (52); a torsion spring is disposed at the bottom end of the flip push rod (54), and the two ends of the torsion spring are respectively fixedly connected to the flip push rod (54) and the surface of the side fixing plate (2); the sliding groove connecting piece (56) is slidably connected to the linkage swing rod (55).

5. The FPC flexible circuit board automatic bending device according to claim 4, characterized in that: The front side of the material box fixing plate (3) is provided with an adhesive structure (6), and the adhesive structure (6) includes a push rod (61), a material barrel (62), a feed pipe (63), a push rod fixing plate (64), an adhesive material box (65), an oscillation plate (66), and an oscillation bar (67). The push rod (61) is fixedly connected to the side of the linkage push rod (51), the material barrel (62) is fixedly connected to the right end of the push rod (61), the feed pipe (63) is fixedly connected to the left end of the material barrel (62), the push rod fixing plate (64) is fixedly connected to the side of the blocking rod (53), the adhesive material box (65) is fixedly connected to the front top of the material box fixing plate (3), the oscillation plate (66) is fixedly connected to the side of the linkage push rod (51), and the oscillation bar (67) is fixedly connected to the bottom surface of the adhesive material box (65).

6. The FPC flexible circuit board automatic bending device according to claim 5, characterized in that: The oscillation bar (67) and the oscillation plate (66) are in contact with each other, the adhesive material box (65) is connected to the barrel (62), the barrel (62) is connected to the feed pipe (63), the end of the feed pipe (63) extends to the flip plate (48), and the side of the flip plate (48) is fixedly connected to the coating pipe, and the coating pipe is connected to the feed pipe (63), and a discharge hole is provided on the surface of the coating pipe.

7. The FPC flexible circuit board automatic bending device according to claim 6, characterized in that: A feeding structure (8) is provided at the right end of the side fixing plate (2), and the feeding structure (8) comprises a rotating shaft frame (81), a rotating belt shaft (82), a transmission belt (83), a fixed groove bar (84), a pressing strip (85), a flexible plate (86), and an adhesive block (87). The rotating shaft frame (81) is fixedly connected to the side surface of the side fixing plate (2), the rotating belt shaft (82) is rotatably connected to the inner side of the rotating shaft frame (81), the transmission belt (83) is rotatably connected to the outer side of the rotating belt shaft (82), the fixed groove bar (84) is fixedly connected to the outer surface of the transmission belt (83), the pressing strip (85) is slidably connected to the inner side of the fixed groove bar (84), the flexible plate (86) is arranged on the inner side of the pressing strip (85), and the adhesive block (87) is fixedly connected to the surface of the flexible plate (86).

8. The FPC flexible circuit board automatic bending device according to claim 7, characterized in that: The pressing strip (85) is in contact with the outer edge of the flexible plate (86), and the flexible plate (86) is located directly below the side fixing plate (2).

9. A method for bending a FPC flexible circuit board, characterized in that: The FPC flexible circuit board automatic bending device as claimed in claim 8 is used to complete the process. The following steps are involved: S1: First, an external hydraulic cylinder is connected to a driving rod (49), and the driving rod (49) is pulled by the hydraulic cylinder to make the slide rail seat (44) slide along the top of the guide rail (41). At this time, the slide rail seat (44) is on the static slide bar (42) on the left side, and the slide rail seat (44) slides along the guide rod (411) through the connected guide slide plate (410), so that the guide slide plate (410) moves with the slide rail seat (44) and extends forward to push the spline rod (46) and the flip shaft (45) to slide, so that the spline rod (46) pushes the flip plate (48) to extend forward and insert into the bottom side of the flexible circuit board; S2: Then, when the flip gear (47) on the inner side of the slide rail seat (44) moves to the flip tooth groove (43) on the surface of the guide rail (41), the side of the flip gear (47) meshes with the flip tooth groove (43) and drives the flip shaft (45) and the spline rod (46) to rotate, so that the spline rod (46) rotates to drive the flip plate (48) to flip, and the flexible circuit board is flipped and folded in half. This folding method can prevent the protective arc at the bend from being over-pressed and causing the circuit to break; S3: Subsequently, when the slide rail seat (44) moves to above the stationary slide bar (42) at the right end, the flip gear (47) inside the slide rail seat (44) stops rotating again by contacting the surface with the stationary slide bar (42), and slides through the guide slide plate (410) and the guide rod (411), sliding the flip plate (48) through the spline rod (46) and the flip shaft (45) to allow the flip plate (48) to be separated from the folded flexible circuit board, thereby simplifying the driving structure steps through the structural operation linkage and improving the processing efficiency; S4: After that, the bottom extension structure of the flip push rod (54) is retracted backward after flipping, until the top structure of the flip push rod (54) is blocked by the blocking rod (53). When the slide rail seat (44) slides from the right end to the left end of the rail (1), the flip push rod (54) is no longer contacted by the end of the retractable slide rod (52). The flip push rod (54) is reset under the action of the torsion spring to push the folded flexible circuit board to the specified position. S5: The barrel (62) is pushed toward the side of the push rod fixing plate (64) by the barrel pushing rod (61), so that the material from the adhesive material box (65) entering the barrel (62) is output to the side of the flip plate (48) through the one-way valve and the feed pipe (63) in the barrel (62), and the flexible circuit board is assisted to be attached after being folded by spraying the material; S6: Finally, the pressing strip (85) is inserted into the inner side of the fixing strip (84) through the fixing strip (84) on the side of the transmission belt (83), and the flexible board (86) clamped by the pressing strip (85) is fixed by the pressing strip (85) passing through the inner side of the fixing strip (84), and the smeared material is smeared on the adhesive block (87). After the flexible board (86), i.e. the flexible circuit board, is turned over, the material on the adhesive block (87) is attached to the flexible board (86) to achieve fixation.

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