Branch tape multi-bending machine of flexible printed circuit (FPC) and bending process of branch tape multi-bending machine

Abstract

The invention discloses a multi-bending machine for a branch belt of a flexible printed circuit (FPC) and a bending process of the multi-bending machine, the multi-bending machine comprises an FPC support table, a bearing mechanism and a bending part, the FPC support table is erected on a case along a linear direction, and the FPC is placed on the FPC support table; the bearing mechanism is vertically connected to the outer side of the FPC support table; the bent part is arranged in the mounting space of the case; the bending part comprises a first bending mechanism, a second bending mechanism and a third bending mechanism which linearly and rotationally move in a horizontal plane; the first bending mechanism turns over by 180 degrees along the first bending line after supporting the belt; the second bending mechanism clamps the branch belt which is bent for the first time and turns over the branch belt by 180 degrees to complete bending for the second time; the third bending mechanism clamps the branch belt bent for the second time and turns over the branch belt by 180 degrees to complete bending for the third time. According to the automatic bending device, multiple times of automatic bending can be completed at different positions and different angles of the same branch belt, the situation of local upwarp in the bending process is avoided, the bending position precision is improved, the bending thickness and the bending radian are accurately controlled, and the surface flatness of a bent belt body is improved.

Description

Technical Field

[0001] The invention relates to the field of flexible printed circuit board (FPC) manufacturing equipment, in particular to a flexible FPC support strip multiple bending machine and a bending process thereof. Background Art

[0002] Flexible circuit boards, also known as "FPC soft boards", are printed circuit boards made of flexible insulating substrates. FPC can provide excellent electrical performance, meet the needs of smaller and higher density installation designs, and also help reduce assembly processes and enhance reliability. Flexible circuit boards FPC soft boards can be bent, wound, and folded freely, and can withstand millions of dynamic bends without damaging the wires. They can be arranged arbitrarily according to spatial layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, thereby achieving the integration of component assembly and wire connection; and can greatly reduce the size and weight of electronic products, which is suitable for the development of electronic products towards high density, miniaturization, and high reliability.

[0003] In the actual manufacturing process, it is necessary to bend and overlap the branch belt body on the flexible FPC belt body. Furthermore, in the actual manufacturing process, it is necessary to perform multiple bending on the branch belt of the flexible FPC. The existing technology cannot solve the problem of multiple bending at different positions and angles of the flexible FPC branch belt. In addition, due to the flexible characteristics of the flexible FPC itself, the bending accuracy cannot be accurately guaranteed during the bending process, that is, the linearity of the connecting line between the bent part and the unbent part on the flexible FPC after the bending line is bent cannot be guaranteed during the bending process, and the bending line often bends after bending, which will cause the belt body to be unable to be accurately bent to the required position. The technical means adopted in the existing technology are generally to set an adsorption platform according to the shape of the required bending position, to adsorb and fix the unbent part of the belt body of the flexible FPC, and then bend the bent part of the belt body. Due to the instability of the vacuum adsorption force, this fixing method cannot completely avoid the position deviation such as local warping caused by the internal stress of the belt body itself during the bending process. In addition, the bent flexible FPC generally needs to be bonded and fixed to each other through adhesives such as foam. The foam is generally set on the side attachment of the bending line and pre-attached to the belt on one side of the bending line. The two layers of the belt after bending are fixed by the foam in the middle. Due to the thickness of the foam itself, there is actually a gap between the two layers of the belt after bending. If the bending curvature during bending is greater than the thickness of the foam, the bending part will be loose and the surface flatness of the belt after bending will be uneven; if the bending curvature during bending is less than the thickness of the foam, the belt cannot be bent to the desired position; therefore, during the bending process, it is also necessary to accurately control the bending curvature at the bending line to accurately bend the belt to the desired position and ensure the surface flatness of the belt after bending. Summary of the invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a flexible FPC support strip multiple bending machine and its bending process using a movable pressing pin as an angle control structure during the bending process, so as to achieve multiple automatic bending at different positions and angles of the same support strip, and realize local compression at the bending line during the bending process, thereby avoiding local warping during the bending process, improving the bending position accuracy, and accurately controlling the bending thickness and bending curvature through the outer diameter of the pressing pin, thereby improving the surface flatness of the strip after bending.

[0005] The technical solution adopted by the present invention is as follows: a flexible FPC support belt multiple bending machine, including a chassis with an installation space inside, and also including an FPC support, a bearing mechanism and a bending part, wherein the FPC support is erected on the chassis along a straight line direction, and the flexible FPC is placed on the FPC support; the flexible FPC includes an FPC belt body and a support belt, the support belt is connected to one side of the FPC belt body in parallel and at intervals, and the support belt is provided with a first bending line, a second bending line and a third bending line with an angle of 45° with its side direction; the bearing mechanism is vertically connected to the outside of the FPC support, and is used to carry the support belt after bending; the bending part is arranged in the installation space of the chassis and extends to the top of the chassis; the bending part includes a first bending line that moves linearly and rotationally in a horizontal plane Bending mechanism, a second bending mechanism and a third bending mechanism; after the first bending mechanism clamps the support belt at the outer end of the first bending line, the first pressure needle is inserted into the first bending line, and the support belt at the outer end of the first bending line is driven to turn 180° along the first bending line with the first pressure needle as the rotation axis to complete the first bending, and the support belt after the first bending is supported by the bearing mechanism; the second bending mechanism clamps the support belt after the first bending, and the second pressure needle is inserted into the second bending line, and the support belt is driven to turn 180° along the second bending line with the second pressure needle as the rotation axis to complete the second bending; the third bending mechanism clamps the support belt after the second bending, and the third pressure needle is inserted into the third bending line, and the support belt is driven to turn 180° along the third bending line with the third pressure needle as the rotation axis to complete the third bending.

[0006] Preferably, the FPC support is a strip-shaped load-bearing platform for horizontally carrying the FPC belt body; a load-bearing block with a strip-shaped groove is provided at intervals on one side of the FPC support for horizontally carrying the support belt, and the support belt at the outer end of the first bending line is suspended on the side of the load-bearing block so as to be clamped by the first bending mechanism.

[0007] Preferably, the bearing mechanism includes a bearing component and an adsorption component, wherein the bearing component is arranged on the chassis and outputs linear power in a direction perpendicular to the FPC support platform so as to adjust the bearing position, and the bearing component horizontally bears the bent support belt; the adsorption component is arranged on the bearing component and outputs power in a vertical direction for adsorbing and fixing the end of the support belt from above; the bearing component includes a bearing support, a bearing transverse cylinder, a bearing support plate and a bearing block, wherein the bearing support is horizontally arranged on the chassis; the bearing transverse cylinder is arranged in a direction perpendicular to the FPC support platform and in this direction Output linear power; the bearing support plate is vertically arranged and slidably connected to the bearing transverse movement cylinder, and is connected to the output end of the bearing transverse movement cylinder; the bearing block is horizontally arranged at the top of the bearing support plate, and at least two material taking grooves are spaced apart on one side of the bearing block to form a toothed structure so that the first bending mechanism can avoid air and clamp the support belt; the adsorption component includes an adsorption cylinder and a suction nozzle, wherein the adsorption cylinder is vertically arranged on the side wall of the bearing support plate, and the output end is arranged upward; the suction nozzle is connected to the output end of the adsorption cylinder and is arranged downward so as to adsorb and fix the end after approaching the end from above.

[0008] Preferably, the bending part also includes a horizontal moving mechanism and a rotating mechanism, wherein the horizontal moving mechanism is arranged in the chassis and outputs linear power in the longitudinal and transverse directions in the horizontal plane; the rotating mechanism is arranged on the output end of the horizontal moving mechanism and extends upward to the surface of the chassis to form a horizontal support plane, and the rotating mechanism outputs rotational power in the horizontal plane to drive the horizontal support plane to rotate; the first bending mechanism, the second bending mechanism and the third bending mechanism are arranged on the horizontal support plane.

[0009] Preferably, the first bending mechanism includes a first oblique push assembly, a first bending assembly, a first pressure needle assembly and a first pressure-maintaining assembly, wherein the first oblique push assembly outputs power in a direction perpendicular to the FPC support platform; the first bending assembly is arranged on the first oblique push assembly in a direction at an angle of 45° to the first oblique push assembly, and outputs rotational power in a vertical plane, and the first clamping component of the first bending assembly is arranged perpendicular to the first oblique push assembly, and is used to clamp the support belt and drive the support belt to flip 180°; the first pressure needle assembly is inserted into the first bending assembly, and outputs linear power in a direction at an angle of 45° to the first oblique push assembly, and is used to drive its first pressure needle to extend into the first bending line, so that the first pressure needle presses the support belt along the first bending line, so as to serve as the rotation axis when the support belt is rotated and bent; the first pressure-maintaining assembly is arranged at the rotating part and the non-rotating part of the first bending assembly, and the first pressure-maintaining assembly after bending is respectively located on the upper and lower sides of the bending part of the support belt, and outputs power in the vertical direction, so as to press the bending part of the support belt from the upper and lower sides for pressure maintaining.

[0010] Preferably, the first oblique thrust assembly includes a first oblique drive cylinder and a first support, wherein the first oblique drive cylinder is horizontally arranged in a direction perpendicular to the FPC support platform and outputs linear power in this direction; the first support is slidably arranged on the first oblique drive cylinder and connected to the output end of the first oblique drive cylinder, and a first support plate is vertically arranged on the first support, and the first support plate is arranged in a direction with an angle of 45° with the first oblique drive cylinder; the first bending assembly includes a first bending cylinder, a first rotating block, a first rotating seat and a first clamping component, wherein the first bending cylinder is arranged on a side wall of the first support plate and outputs rotational power in a vertical plane; the first rotating block is connected to the output end of the first bending cylinder; the first rotating seat is connected to the side wall of the first rotating block and extends in a direction perpendicular to the first oblique drive cylinder; the first clamping component is arranged on the first rotating seat and outputs power in a vertical direction for clamping the support belt.

[0011] Preferably, the first pressing needle assembly includes a first pressing needle cylinder, a first pressing needle shaft and a first pressing needle, wherein the first pressing needle cylinder is arranged on the other side wall of the first support plate, and outputs power in a direction perpendicular to the first support plate; the first pressing needle shaft is connected to the output end of the first pressing needle cylinder, and extends horizontally through the first support plate, the first bending cylinder and the first rotating block, and is driven by the first pressing needle cylinder to move freely in a straight line direction; the first pressing needle is connected to the end of the first pressing needle shaft, and the first pressing needle is coaxially arranged with the rotation center axis of the first rotating block.

[0012] Preferably, the first pressure-maintaining assembly includes a first lower pressure-maintaining cylinder, a first lower pressure-maintaining block, a first upper pressure-maintaining cylinder and a first upper pressure-maintaining block, wherein the first lower pressure-maintaining cylinder is arranged on the first rotating seat and outputs power in the vertical direction; the first lower pressure-maintaining block is connected to the output end of the first lower pressure-maintaining cylinder; the first upper pressure-maintaining cylinder is connected to the first bending cylinder through a connecting plate, and the output end is arranged downward; the first upper pressure-maintaining block is connected to the output end of the first upper pressure-maintaining cylinder; after the first lower pressure-maintaining cylinder and the first lower pressure-maintaining block complete the first bending with the first rotating seat, they rotate to the bottom of the support belt; the first lower pressure-maintaining cylinder and the first upper pressure-maintaining cylinder respectively output power to drive the first lower pressure-maintaining block and the first upper pressure-maintaining block to press the first bending line of the support belt from the bottom and the top, so as to press and pressure the bending parts overlapping each other after bending.

[0013] Preferably, the second bending mechanism includes a second oblique push assembly, a second bending assembly, a second pressure needle assembly and a second pressure-maintaining assembly, wherein the second oblique push assembly outputs power in a direction perpendicular to the FPC support platform; the second bending assembly is arranged on the second oblique push assembly in a direction at a 45° angle to the second oblique push assembly, and outputs rotational power in a vertical plane, and the second clamping component of the second bending assembly is arranged perpendicular to the second oblique push assembly, and is used to clamp the support belt and drive the support belt to flip 180°; the second pressure needle assembly is inserted into the second bending assembly, and outputs linear power in a direction at a 45° angle to the second oblique push assembly, and is used to drive its second pressure needle to extend into the second bending line, so that the second pressure needle presses the support belt along the second bending line, so as to serve as the rotation axis when the support belt is rotated and bent; the second pressure-maintaining assembly is arranged at the rotating part and the non-rotating part of the first bending assembly, and the second pressure-maintaining assembly after bending is respectively located on the upper and lower sides of the bending part of the support belt, and outputs power in the vertical direction, so as to press the bending part of the support belt from the upper and lower sides for pressure maintaining.

[0014] Preferably, the third bending mechanism includes a third support, a third bending assembly, a third pressure needle assembly and a third pressure-holding assembly, wherein the third support is arranged in a direction perpendicular to the FPC support platform; the third bending assembly is arranged on the third support in a direction at a 45° angle to the third support, and outputs rotational power in a vertical plane, and the third clamping component of the third bending assembly is arranged in the same direction as the third support, and is used to clamp the support belt and drive the support belt to flip 180°; the third pressure needle assembly is inserted into the third bending assembly, and outputs linear power in a direction at a 45° angle to the third support, and is used to drive its third pressure needle to extend into the third bending line, so that the third pressure needle presses the support belt along the third bending line, so as to serve as the rotation axis when the support belt is rotated and bent; the third pressure-holding assembly is arranged at the rotating part and the non-rotating part of the third bending assembly, and the third pressure-holding assembly after bending is respectively located on the upper and lower sides of the bending part of the support belt, and outputs power in the vertical direction, so as to press the bending part of the support belt from the upper and lower sides for pressure holding.

[0015] A bending process of a flexible FPC support tape multiple bending machine, characterized in that it includes the following process steps: S1. Flexible FPC loading: The flexible FPC to be bent is placed on the FPC support, and the portion of the support strip located at the outer end of the first bending line is suspended; S2, position adjustment: the horizontal moving mechanism and the rotating mechanism of the bending part adjust the position of the first bending mechanism to make it close to the position of the branch belt in the suspended state in step S1; S3, first bending: the first bending assembly of the first bending mechanism clamps the branch belt in the suspended state in step S1 up and down; the first pressing needle assembly drives the second pressing needle to extend to the first bending line, and after pressing the branch belt along the first bending line, the first bending assembly drives the branch belt to turn 180° around the first pressing needle to complete the first bending; S4, first bending and pressure holding: after the support strip in step S3 is bent for the first time, the position of the first bending mechanism is adjusted so that the first pressure holding component is aligned with the first bending line, and the first pressure holding component presses the support strips overlapped at the first bending line to hold the pressure; S5, second bending: after the first bending and pressure holding is completed in step S4, the position of the second bending mechanism is adjusted so that the second bending component is close to and clamps the support belt after the first bending; the second pressing needle component drives the second pressing needle to extend to the second bending line, and after pressing the support belt along the second bending line, the second bending component drives the support belt to turn 180° around the second pressing needle to complete the second bending; S6, second bending and pressure holding: after the support strip in step S5 is bent for the second time, the position of the second bending mechanism is adjusted so that the second pressure holding component is aligned with the second bending line, and the second pressure holding component presses the support strips overlapped at the second bending line up and down to hold the pressure; S7, third bending: After the second bending and pressure holding in step S6 is completed, the third bending mechanism rotates to be close to the FPC support, and the linear position is adjusted to make its third bending component close to and clamp the support belt after the second bending; the third pressing needle assembly extends to the third bending line, and after pressing the support belt along the third bending line, the third bending assembly drives the support belt to turn 180° around the third pressing needle to complete the third bending; S8, third bending and pressure holding: After the support strip in step S7 completes the third bending, adjust the position of the third bending mechanism so that the third pressure holding component is aligned with the third bending line up and down, and then the third pressure holding component presses the overlapping support strips at the third bending line up and down to perform compression and pressure holding.

[0016] The beneficial effects of the present invention are: In view of the defects and shortcomings of the prior art, the present invention independently develops and designs a flexible FPC branch strip multiple bending machine and a bending process thereof, which uses a movable pressing needle as an angle control structure in the bending process, so as to realize multiple automatic bending at different positions and angles of the same branch strip of the flexible FPC, and realizes local compression at the bending line during the bending process, thereby avoiding local warping during the bending process, improving the bending position accuracy, and accurately controlling the bending thickness and bending curvature through the outer diameter of the pressing needle, thereby improving the surface flatness of the strip body after bending.

[0017] The present invention is applied to the field of automatic bending of flexible FPC support tapes at different positions and angles, and aims to provide a method of achieving automatic bending while having good versatility, and being able to further improve the bending curvature, position accuracy and surface flatness of the tape body after bending by effectively solving the problems of bending warping and bending curvature under the premise of meeting the requirements of different flexible FPC support tape bending processes; the present invention as a whole uses a chassis with an installation space inside as a bearing structure, a bending part is arranged in the installation space, an FPC support is arranged on the front side of the bending part at the upper part of the chassis, and a bearing mechanism perpendicular to the FPC support is arranged on the front side of the FPC support, and in the overall bending process, the flexible FPC to be bent is horizontally placed on the FPC support, and the tape body of the flexible FPC is carried by the FPC support and downwardly sucked by a vacuum nozzle arranged thereon. Adsorption and fixation, the branch belt of the flexible FPC to be bent is located on its front side, and is arranged parallel to the FPC belt body and spaced apart before bending, and is horizontally supported by the bearing block of the FPC support, and the part to be bent is in a suspended state; the bending part includes a horizontal moving mechanism, a rotating mechanism, and a first bending mechanism, a second bending mechanism and a third bending mechanism arranged inside the chassis, and the horizontal moving mechanism provides linear power along the longitudinal and transverse directions in the horizontal plane, which is used to adjust the real-time position during the bending process; the rotating mechanism is used to provide rotational power in the horizontal plane, which is used to adjust the real-time angle during the bending process; the first bending mechanism, the second bending mechanism and the third bending mechanism are actuators for performing three bends on the branch belt; the bearing mechanism arranged on the front side of the FPC is used to bear and support the bent branch belt.

[0018] The special thing is that the present invention completes the automatic bending along the first bending line, the second bending line and the third bending line with an angle of 45° with the side edge of the belt body, and automatically carries the bent branch belt correspondingly through the supporting mechanism that can adjust the position in real time. At the same time, based on the bending principle that the branch belt needs to be clamped and fixed before bending and then driven to rotate, in order to avoid movement interference with the supporting mechanism during the clamping process of the branch belt (under normal circumstances, when the branch belt is supported by the horizontal bearing surface of the supporting mechanism, the bottom of the branch belt is supported by the bearing mechanism, so movement occurs Dynamic interference cannot be clamped by the bending mechanism), the side of the bearing block of the bearing mechanism used to bear the support belt adopts a toothed structure design, that is, a plurality of material taking slots are spaced apart on its side, and the upper and lower sides of the support belt at the material taking slot are in an open state, and the second bending mechanism and the third bending mechanism cooperate to adopt the toothed structure of the first air-avoiding clamping slot and the second air-avoiding clamping slot (the first bending mechanism does not need this structural design because it does not need to clamp the support belt on the bearing mechanism), and the support belt is clamped from the material taking slot by interlacing with the material taking slot during the clamping process, thereby effectively avoiding the problem of motion interference. Furthermore, the first bending mechanism, the second bending mechanism and the third bending mechanism of the present invention use a pressure needle (including a first pressure needle, a second pressure needle and a third pressure needle) as the rotation center axis during bending. The function of the pressure needle is to achieve downward pressure and fixation of the bending line of the flexible FPC belt during the bending process, thereby reducing the situation where the belt is locally warped during bending and other factors that affect its position accuracy. At the same time, during bending, the belt uses the pressure needle as the rotation center axis, gradually covers the outer wall of the pressure needle to complete the bending, and the outer diameter of the pressure needle is used to achieve precise control of the thickness of the bending arc. In addition, this bending method that uses a pressure needle to assist in providing a bending rotation center can achieve bending at any angle on the belt by adjusting the angle range between the pressure needle and the belt, which can adapt to various angle bending scenarios of the flexible FPC belt and has good versatility. Specifically, in order to achieve the above functions, the pressing needle of the present invention is perpendicular to the bending rotation plane (i.e., the plane on which the bending component drives the flexible FPC to rotate after clamping it), and can movably pass through the bending component. The bending action of the bending component does not affect the position of the pressing needle, that is, the bending rotation action and the pressing needle do not produce motion interference, and the pressing needle is coaxially arranged with the rotation center of the bending component, that is, the bending component drives the flexible FPC to complete the rotational bending action with the straight line where the pressing needle is located as the rotation center; at the same time, the pressing needle is retractable in the straight line direction so that it can extend into or away from the bending line of the flexible FPC belt before and after bending.Furthermore, due to the influence of the internal stress of the flexible FPC belt, the belt will have a rebound tendency after being bent, resulting in bending failure. In order to ensure the stability of the adhesion between the belts after bending and overlapping through foam, the bending assembly of the present invention is also provided with a pressure-holding mechanism. The upper and lower parts of the pressure-holding mechanism are respectively arranged on the rotating part and the non-rotating part of the bending assembly, and the pressure-holding mechanism arranged on the non-rotating part is pre-installed and adjusted above the bending line after bending. The pressure-holding mechanism arranged on the rotating part is located below the flexible FPC belt after following the rotation and bending of the bending assembly. By outputting linear power, the flexible FPC belt is pressed from the upper and lower sides of the bending line, thereby achieving pressure holding of the belt after bending, effectively overcoming the internal stress of the belt, and maintaining the position accuracy of the belt after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present invention.

[0020] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 3 This is the third schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 4 This is the fourth schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the bending state of the flexible FPC support tape of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the flexible FPC of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the bearing mechanism and the flexible FPC of the present invention.

[0026] Figure 8 This is one of the three-dimensional structural schematic diagrams of the carrying mechanism of the present invention.

[0027] Fig. 9 This is the second schematic diagram of the three-dimensional structure of the carrying mechanism of the present invention.

[0028] Fig.10 This is one of the three-dimensional structural schematic diagrams of the bending part of the present invention.

[0029] Fig.11 This is the second schematic diagram of the three-dimensional structure of the bending part of the present invention.

[0030] Fig.12 This is the third schematic diagram of the three-dimensional structure of the bending part of the present invention.

[0031] Fig.13This is one of the three-dimensional structural schematic diagrams of the first bending mechanism of the present invention.

[0032] Fig.14 This is the second schematic diagram of the three-dimensional structure of the first bending mechanism of the present invention.

[0033] Fig.15 This is the third schematic diagram of the three-dimensional structure of the first bending mechanism of the present invention.

[0034] Fig.16 This is one of the three-dimensional structural schematic diagrams of the second bending mechanism of the present invention.

[0035] Fig.17 This is the second schematic diagram of the three-dimensional structure of the second bending mechanism of the present invention.

[0036] Fig.18 This is the third schematic diagram of the three-dimensional structure of the second bending mechanism of the present invention.

[0037] Fig.19 This is one of the three-dimensional structural schematic diagrams of the third bending mechanism of the present invention.

[0038] Fig. 20 This is the second schematic diagram of the three-dimensional structure of the third bending mechanism of the present invention.

[0039] Fig.21 This is the third schematic diagram of the three-dimensional structure of the third bending mechanism of the present invention.

[0040] In the figure: 0, flexible FPC; 01, FPC belt body; 02, branch belt; 03, terminal; a, first bending line; b, second bending line; c, third bending line; 1. Chassis; 2. FPC support; 3. Carrying mechanism; 31. Carrying support; 32. Carrying traverse cylinder; 33. Carrying support plate; 34. Carrying block; 35. Adsorption cylinder; 36. Suction nozzle; D. Material trough; 4. Horizontal movement mechanism; 5. Rotation mechanism; 6. First bending mechanism; 61. First oblique drive cylinder; 62. First support; 63. First pressure needle cylinder; 64. First pressure needle shaft; 65. First pressure needle; 66. First bending cylinder; 67. First rotating block; 68. First rotating seat; 69. First fixed pressing block; 610. First pressing cylinder; 611. First movable pressing block; 612. First lower pressure-maintaining cylinder; 613. First lower pressure-maintaining block; 614. First upper pressure-maintaining cylinder; 615. First upper pressure-maintaining block; 7. Second bending mechanism; 71. Second oblique drive cylinder; 72. Second support; 73. Second pressure needle cylinder; 74. Second pressure needle shaft; 75. Second pressure needle; 76. Second bending cylinder; 77. Second rotating block; 78. Second rotating seat; 79. First vertical support plate; 710. Second fixed pressure block; 711. Second clamping cylinder; 712. Second movable pressure block; 713. Second lower pressure-maintaining cylinder; 714. Second lower pressure-maintaining block; 715. Second upper pressure-maintaining cylinder; 716. Second upper pressure-maintaining block; A. First air-avoiding clamping groove; 8. The third bending mechanism; 81. The third support; 82. The third pressure needle cylinder; 83. The third pressure needle shaft; 84. The third pressure needle; 85. The third bending cylinder; 86. The third rotating block; 87. The third rotating seat; 88. The second vertical support plate; 89. The third fixed pressure block; 810. The third clamping cylinder; 811. The third movable pressure block; 812. The third lower pressure-maintaining cylinder; 813. The third lower pressure-maintaining block; 814. The third upper pressure-maintaining cylinder; 815. The third upper pressure-maintaining block; B. The second air-avoiding clamping groove; C. The through groove; 816. The transmission block. DETAILED DESCRIPTION

[0041] 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.

[0042] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0044] like Figures 1 to 6 and Figures 10 to 12As shown, the present invention proposes a multiple bending machine for support strips of flexible FPC, comprising a chassis 1 with an installation space inside, and also comprising an FPC support platform 2, a bearing mechanism 3 and a bending part, wherein the FPC support platform 2 is erected on the chassis 1 along a straight line direction, and the flexible FPC0 is placed on the FPC support platform 2; the flexible FPC0 comprises an FPC belt body 01 and a support strip 02, the support strip 02 is connected to one side of the FPC belt body 01 in parallel and at intervals, and the support strip 02 is provided with a first bending line a, a second bending line b and a third bending line c with an angle of 45° with its side direction; the bearing mechanism 3 is vertically connected to the outer side of the FPC support platform 2, and is used to carry the support strip 02 after bending; the bending part is arranged in the installation space of the chassis 1 and extends to the top of the chassis 1; the bending part comprises a first bending mechanism 6, a second bending machine 7, which move linearly and rotationally in a horizontal plane, and a second bending mechanism 8, which move linearly and rotationally in a horizontal plane. Structure 7 and the third bending mechanism 8; after the first bending mechanism 6 clamps the support belt 02 at the outer end of the first bending line a, the first pressure needle 65 is inserted to the first bending line a, and the support belt 02 at the outer end of the first bending line a is driven to turn 180° along the first bending line a with the first pressure needle 65 as the rotation axis to complete the first bending. The support belt 02 after the first bending is supported by the bearing mechanism 3; the second bending mechanism 7 clamps the support belt 02 after the first bending, and inserts the second pressure needle 75 to the second bending line b, and drives the support belt 02 to turn 180° along the second bending line b with the second pressure needle 75 as the rotation axis to complete the second bending; the third bending mechanism 8 clamps the support belt 02 after the second bending, and inserts the third pressure needle 84 to the third bending line c, and drives the support belt 02 to turn 180° along the third bending line c with the third pressure needle 84 as the rotation axis to complete the third bending.

[0045] like Figures 1 to 4 As shown, as an embodiment of the present invention, the FPC support 1 of the present invention is a strip-shaped load-bearing platform for horizontally carrying the FPC belt body 01; a load-bearing block with a strip-shaped groove is provided at intervals on one side of the FPC support 1 for horizontally carrying the support belt 02, and the support belt 02 at the outer end of the first bending line a is suspended on the side of the load-bearing block so as to be clamped by the first bending mechanism 6.

[0046] like Figures 7 to 9As shown, as an embodiment of the present invention, the bearing mechanism 3 of the present invention includes a bearing component and an adsorption component, wherein the bearing component is arranged on the chassis 1, and outputs linear power in a direction perpendicular to the FPC support 2 to adjust the bearing position, and the bearing component horizontally carries the bent support belt 02; the adsorption component is arranged on the bearing component, and outputs power in a vertical direction, which is used to adsorb and fix the end 03 of the support belt 02 from above; the bearing component includes a bearing support 31, a bearing transverse cylinder 32, a bearing support plate 33 and a bearing block 34, wherein the bearing support 31 is horizontally arranged on the chassis 1; the bearing transverse cylinder 32 is arranged in a direction perpendicular to the FPC support 2, and along the same Direction output linear power; the bearing support plate 33 is vertically arranged and slidably connected to the bearing transverse movement cylinder 32, and is connected to the output end of the bearing transverse movement cylinder 32; the bearing block 34 is horizontally arranged at the top of the bearing support plate 33, and one side of the bearing block 34 is provided with at least two material taking grooves D at intervals to form a toothed structure, so that the first bending mechanism 6 can avoid the air and clamp the support belt 02; the adsorption component includes an adsorption cylinder 35 and a suction nozzle 36, wherein the adsorption cylinder 35 is vertically arranged on the side wall of the bearing support plate 33, and the output end is arranged upward; the suction nozzle 36 is connected to the output end of the adsorption cylinder 35, and is arranged downward, so as to adsorb and fix the end head 03 after approaching the end head 03 from above.

[0047] Furthermore, the bearing mechanism 3 of the present invention may also include a bearing longitudinal movement cylinder, and the bearing transverse movement cylinder 31 may be arranged on the output end of the bearing longitudinal movement cylinder. The bearing transverse movement cylinder 31 is driven by the bearing longitudinal movement cylinder to output power in the longitudinal direction, so that the bearing block 34 has the function of adjusting the position in the longitudinal and transverse directions at the same time, that is, the bearing mechanism 3 can adjust the position after carrying the branch belt 02 after the first bending to carry the branch belt 02 after the second bending.

[0048] like Figures 1 to 4 As shown, as an embodiment of the present invention, the bending part of the present invention also includes a horizontal moving mechanism 4 and a rotating mechanism 5, wherein the horizontal moving mechanism 4 is arranged in the chassis 1, and outputs linear power in the longitudinal and transverse directions in the horizontal plane; the rotating mechanism 5 is arranged on the output end of the horizontal moving mechanism 4, and extends upward to the surface of the chassis 1 to form a horizontal support plane, and the rotating mechanism 5 outputs rotational power in the horizontal plane to drive the horizontal support plane to rotate; the first bending mechanism 6, the second bending mechanism 7 and the third bending mechanism 8 are arranged on the horizontal support plane.

[0049] like Figures 13 to 15As shown, as an embodiment of the present invention, the first bending mechanism 6 of the present invention includes a first oblique push assembly, a first bending assembly, a first pressure needle assembly and a first pressure-maintaining assembly, wherein the first oblique push assembly outputs power in a direction perpendicular to the FPC support 2; when bending, the first bending assembly is arranged on the first oblique push assembly in a direction at an angle of 45° to the first oblique push assembly, and outputs rotational power in a vertical plane, and the first clamping component of the first bending assembly is arranged perpendicular to the first oblique push assembly, and is used to clamp the support belt 02 and drive the support belt 02 to flip 180°; the first pressure needle assembly The needle assembly is inserted in the first bending assembly and outputs linear power along a 45° angle with the first oblique push assembly, so as to drive its first pressing needle 65 to extend to the first bending line a, so that the first pressing needle 65 presses the support belt 02 along the first bending line a, so as to serve as the rotation axis when the support belt 02 is rotated and bent; the first pressure maintaining assembly is arranged in the rotating part and the non-rotating part of the first bending assembly, and the first pressure maintaining assembly after bending is respectively located on the upper and lower sides of the bending point of the support belt 02, and outputs power in the vertical direction, so as to press the bending point of the support belt 02 from the upper and lower sides for pressure maintaining.

[0050] The first oblique thrust assembly includes a first oblique drive cylinder 61 and a first support 62, wherein the first oblique drive cylinder 61 is horizontally arranged in a direction perpendicular to the FPC support 2 during bending, and outputs linear power in this direction; the first support 62 is slidably arranged on the first oblique drive cylinder 61 and connected to the output end of the first oblique drive cylinder 61, and a first support plate is vertically arranged on the first support 62, and the first support plate is arranged in a direction with an angle of 45° with the first oblique drive cylinder 61; the first bending assembly includes a first bending cylinder 6 6. A first rotating block 67, a first rotating seat 68 and a first clamping component, wherein the first bending cylinder 66 is arranged on a side wall of the first support plate and outputs rotational power in a vertical plane; the first rotating block 67 is connected to the output end of the first bending cylinder 66; the first rotating seat 68 is connected to the side wall of the first rotating block 67 and extends in a direction perpendicular to the first oblique drive cylinder 61; the first clamping component is arranged on the first rotating seat 68 and outputs power in a vertical direction for clamping the support belt 02.

[0051] The first pressing needle assembly includes a first pressing needle cylinder 63, a first pressing needle shaft 64 and a first pressing needle 65, wherein the first pressing needle cylinder 63 is arranged on the other side wall of the first supporting plate, and outputs power in a direction perpendicular to the first supporting plate; the first pressing needle shaft 64 is connected to the output end of the first pressing needle cylinder 63, and extends horizontally through the first supporting plate, the first bending cylinder 66 and the first rotating block 67, and is driven by the first pressing needle cylinder 63 to move freely in a straight line direction; the first pressing needle 65 is connected to the end of the first pressing needle shaft 64, and the first pressing needle 65 is coaxially arranged with the rotation center axis of the first rotating block 67.

[0052] The first pressure-maintaining assembly includes a first lower pressure-maintaining cylinder 612, a first lower pressure-maintaining block 613, a first upper pressure-maintaining cylinder 614 and a first upper pressure-maintaining block 615, wherein the first lower pressure-maintaining cylinder 612 is arranged on the first rotating seat 68 and outputs power in the vertical direction; the first lower pressure-maintaining block 613 is connected to the output end of the first lower pressure-maintaining cylinder 612; the first upper pressure-maintaining cylinder 614 is connected to the first bending cylinder 66 through a connecting plate, and the output end is arranged downward; the first upper pressure-maintaining cylinder 614 is connected to the first bending cylinder 66 through a connecting plate, and the output end is arranged downward; Block 615 is connected to the output end of the first upper pressure-maintaining cylinder 614; after the first lower pressure-maintaining cylinder 612 and the first lower pressure-maintaining block 613 complete the first bending with the first rotating seat 68, they rotate to the bottom of the support belt 02; the first lower pressure-maintaining cylinder 612 and the first upper pressure-maintaining cylinder 614 respectively output power to drive the first lower pressure-maintaining block 613 and the first upper pressure-maintaining block 615 to press the first bending line a of the support belt 02 from the bottom and the top, so as to press and maintain the bending parts that overlap each other after bending.

[0053] In addition, the outer end of the first rotating seat 68 of the present invention is provided with a vertical support plate extending vertically upward; the first clamping component of the present invention includes a first fixed pressure block 69, a first clamping cylinder 610 and a first movable pressure block 611, the first fixed pressure block 69 is arranged on the top of the vertical support plate and extends horizontally, and an elastic block (such as a silicone block) is provided at the bottom of the horizontal extension; the first clamping cylinder 610 is arranged close to the vertical support plate, and the output end is arranged upward; the first movable pressure block 611 is horizontally arranged on the output end of the first clamping cylinder 610, and the top is provided with There is an elastic block (such as a silicone block); before bending, the first movable pressure block 611 and the first fixed pressure block 69 are arranged at an interval up and down, and after the support belt enters the gap space between the first movable pressure block 611 and the first fixed pressure block 69 by moving the first clamping component, the first clamping cylinder 610 drives the first movable pressure block 611 to move toward the first fixed pressure block 69 to clamp and fix the support belt 02; after the support belt 02 is clamped, the first clamping component rotates as a whole with the first rotating seat 68 to enable the support belt 02 to complete a 180° flip turn.

[0054] Furthermore, the present invention designs a flexible FPC branch strip multiple bending machine and its bending process using a movable pressing pin as an angle control structure during the bending process, thereby achieving multiple automatic bending at different positions and angles of the same branch strip of the flexible FPC, and realizing local compression at the bending line during the bending process, thereby avoiding local warping during the bending process, and improving the bending position accuracy. The bending thickness and bending curvature can be accurately controlled by the outer diameter of the pressing pin, thereby improving the surface flatness of the strip after bending. The present invention is applied to the field of automatic bending of flexible FPC support tapes at different positions and angles, and aims to provide a method of achieving automatic bending while having good versatility, and being able to further improve the bending curvature, position accuracy and surface flatness of the tape body after bending by effectively solving the problems of bending warping and bending curvature under the premise of meeting the requirements of different flexible FPC support tape bending processes; the present invention as a whole uses a chassis with an installation space inside as a bearing structure, a bending part is arranged in the installation space, an FPC support is arranged on the front side of the bending part at the upper part of the chassis, and a bearing mechanism perpendicular to the FPC support is arranged on the front side of the FPC support, and in the overall bending process, the flexible FPC to be bent is horizontally placed on the FPC support, and the tape body of the flexible FPC is carried by the FPC support and downwardly sucked by a vacuum nozzle arranged thereon. Adsorption and fixation, the branch belt of the flexible FPC to be bent is located on its front side, and is arranged parallel to the FPC belt body and spaced apart before bending, and is horizontally supported by the bearing block of the FPC support, and the part to be bent is in a suspended state; the bending part includes a horizontal moving mechanism, a rotating mechanism, and a first bending mechanism, a second bending mechanism and a third bending mechanism arranged inside the chassis, and the horizontal moving mechanism provides linear power along the longitudinal and transverse directions in the horizontal plane, which is used to adjust the real-time position during the bending process; the rotating mechanism is used to provide rotational power in the horizontal plane, which is used to adjust the real-time angle during the bending process; the first bending mechanism, the second bending mechanism and the third bending mechanism are actuators for performing three bends on the branch belt; the bearing mechanism arranged on the front side of the FPC is used to bear and support the bent branch belt.The special thing is that the present invention completes the automatic bending along the first bending line, the second bending line and the third bending line with an angle of 45° with the side edge of the belt body, and automatically carries the bent branch belt correspondingly through the supporting mechanism that can adjust the position in real time. At the same time, based on the bending principle that the branch belt needs to be clamped and fixed before bending and then driven to rotate, in order to avoid movement interference with the supporting mechanism during the clamping process of the branch belt (under normal circumstances, when the branch belt is supported by the horizontal bearing surface of the supporting mechanism, the bottom of the branch belt is supported by the bearing mechanism, so movement occurs Dynamic interference cannot be clamped by the bending mechanism), the side of the bearing block of the bearing mechanism used to bear the support belt adopts a toothed structure design, that is, a plurality of material taking slots are spaced apart on its side, and the upper and lower sides of the support belt at the material taking slot are in an open state, and the second bending mechanism and the third bending mechanism cooperate to adopt the toothed structure of the first air-avoiding clamping slot and the second air-avoiding clamping slot (the first bending mechanism does not need this structural design because it does not need to clamp the support belt on the bearing mechanism), and the support belt is clamped from the material taking slot by interlacing with the material taking slot during the clamping process, thereby effectively avoiding the problem of motion interference. Furthermore, the first bending mechanism, the second bending mechanism and the third bending mechanism of the present invention use a pressure needle (including a first pressure needle, a second pressure needle and a third pressure needle) as the rotation center axis during bending. The function of the pressure needle is to achieve downward pressure and fixation of the bending line of the flexible FPC belt during the bending process, thereby reducing the situation where the belt is locally warped during bending and other factors that affect its position accuracy. At the same time, during bending, the belt uses the pressure needle as the rotation center axis, gradually covers the outer wall of the pressure needle to complete the bending, and the outer diameter of the pressure needle is used to achieve precise control of the thickness of the bending arc. In addition, this bending method that uses a pressure needle to assist in providing a bending rotation center can achieve bending at any angle on the belt by adjusting the angle range between the pressure needle and the belt, which can adapt to various angle bending scenarios of the flexible FPC belt and has good versatility. Specifically, in order to achieve the above functions, the pressing needle of the present invention is perpendicular to the bending rotation plane (i.e., the plane on which the bending component drives the flexible FPC to rotate after clamping it), and can movably pass through the bending component. The bending action of the bending component does not affect the position of the pressing needle, that is, the bending rotation action and the pressing needle do not produce motion interference, and the pressing needle is coaxially arranged with the rotation center of the bending component, that is, the bending component drives the flexible FPC to complete the rotational bending action with the straight line where the pressing needle is located as the rotation center; at the same time, the pressing needle is retractable in the straight line direction so that it can extend into or away from the bending line of the flexible FPC belt before and after bending.Furthermore, due to the influence of the internal stress of the flexible FPC belt, the belt will have a rebound tendency after being bent, resulting in bending failure. In order to ensure the stability of the adhesion between the belts after bending and overlapping through foam, the bending assembly of the present invention is also provided with a pressure-holding mechanism. The upper and lower parts of the pressure-holding mechanism are respectively arranged on the rotating part and the non-rotating part of the bending assembly, and the pressure-holding mechanism arranged on the non-rotating part is pre-installed and adjusted above the bending line after bending. The pressure-holding mechanism arranged on the rotating part is located below the flexible FPC belt after following the rotation and bending of the bending assembly. By outputting linear power, the flexible FPC belt is pressed from the upper and lower sides of the bending line, thereby achieving pressure holding of the belt after bending, effectively overcoming the internal stress of the belt, and maintaining the position accuracy of the belt after bending. Example 2

[0055] like Figures 16 to 18 As shown, as an embodiment of the present invention, the second bending mechanism of the present invention includes a second oblique push assembly, a second bending assembly, a second pressure needle assembly and a second pressure-maintaining assembly, wherein the second oblique push assembly outputs power in a direction perpendicular to the FPC support 2; the second bending assembly is arranged on the second oblique push assembly in a direction at an angle of 45° to the second oblique push assembly, and outputs rotational power in a vertical plane, and the second clamping component of the second bending assembly is arranged perpendicular to the second oblique push assembly, and is used to clamp the support belt 02 and then drive the support belt 02 to flip 180°; the second pressure needle assembly It is inserted in the second bending component and outputs linear power along the direction of the 45° angle with the second oblique thrust component, so as to drive its second pressing needle 75 to extend to the second bending line b, so that the second pressing needle 75 presses the support belt 02 along the second bending line b, so as to serve as the rotation axis when the support belt 02 is rotated and bent; the second pressure maintaining component is arranged in the rotating part and the non-rotating part of the second bending component, and the second pressure maintaining component after bending is respectively located on the upper and lower sides of the bending part of the support belt 02, and outputs power in the vertical direction, so as to press the bending part of the support belt 02 from the upper and lower sides for pressure maintaining.

[0056] The second oblique thrust assembly includes a second oblique thrust cylinder 71 and a second support 72, wherein the second oblique drive cylinder 71 is horizontally arranged in a direction perpendicular to the FPC support 2 during bending, and outputs linear power in this direction; the second support 72 is slidably arranged on the second oblique drive cylinder 71 and connected to the output end of the second oblique drive cylinder 71, and a second support plate is vertically arranged on the second support 72, and the second support plate is arranged in a direction with an angle of 45° with the second oblique drive cylinder 61; the second bending assembly includes a second bending cylinder 7 6. A second rotating block 77, a second rotating seat 78 and a second clamping component, wherein the second bending cylinder 76 is arranged on a side wall of the second support plate and outputs rotational power in a vertical plane; the second rotating block 77 is connected to the output end of the second bending cylinder 76; the second rotating seat 78 is connected to the side wall of the second rotating block 77 and extends in a direction perpendicular to the second oblique drive cylinder 71; the second clamping component is arranged on the second rotating seat 78 and outputs power in a vertical direction for clamping the support belt 02.

[0057] The second clamping component includes a first vertical support plate 79, a second fixed pressure block 710, a second clamping cylinder 711 and a second movable pressure block 712, wherein the first vertical support plate 79 is vertically arranged at the outer end of the second rotating seat 78; the second fixed pressure block 710 is horizontally arranged on the top of the first vertical support plate 79 and extends horizontally to one side of the first vertical support plate 79, the side of the second fixed pressure block 710 is a tooth-shaped structure, and at least two first air-avoiding clamping grooves A are arranged at intervals along the straight direction; the second clamping cylinder 711 is provided It is arranged on one side wall of the first vertical support plate 79 and outputs power in the vertical direction; the second movable pressure block 712 is horizontally arranged on the output end of the second clamping cylinder 711, and the side of the second movable pressure block 712 corresponds to the second fixed pressure block 710 and is provided with at least two first air avoidance clamping grooves A; in the process of clamping the support belt 02, the first air avoidance grooves A and the material taking groove D of the supporting mechanism 3 are staggered and aligned in the vertical direction, effectively preventing movement interference with the supporting mechanism 3 during the process of clamping the support belt 02 during the second bending.

[0058] The second pressing needle assembly includes a second pressing needle cylinder 73, a second pressing needle shaft 74 and a second pressing needle 75, wherein the second pressing needle cylinder 73 is arranged on the other side wall of the second support plate, and outputs power in a direction perpendicular to the second support plate; the second pressing needle shaft 74 is connected to the output end of the second pressing needle cylinder 73, and extends horizontally through the second support plate, the second bending cylinder 76 and the second rotating block 77, and is driven by the second pressing needle cylinder 73 to move freely in a straight line direction; the second pressing needle 75 is connected to the end of the second pressing needle shaft 74, and the second pressing needle 75 is coaxially arranged with the rotation center axis of the second rotating block 77.

[0059] The second pressure-maintaining assembly includes a second lower pressure-maintaining cylinder 713, a second lower pressure-maintaining block 714, a second upper pressure-maintaining cylinder 715 and a second upper pressure-maintaining block 716, wherein the second lower pressure-maintaining cylinder 713 is arranged on the second rotating seat 78 and outputs power in the vertical direction; the second lower pressure-maintaining block 714 is connected to the output end of the second lower pressure-maintaining cylinder 713; the second upper pressure-maintaining cylinder 715 is connected to the second bending cylinder 76 through a connecting plate, and the output end is arranged downward; the second upper pressure-maintaining cylinder 715 is connected to the second bending cylinder 76 through a connecting plate, and the output end is arranged downward; Block 716 is connected to the output end of the second upper pressure-maintaining cylinder 715; after the second lower pressure-maintaining cylinder 713 and the second lower pressure-maintaining block 714 complete the second bending with the second rotating seat 78, they rotate to the bottom of the support belt 02; the second lower pressure-maintaining cylinder 713 and the second upper pressure-maintaining cylinder 715 respectively output power to drive the second lower pressure-maintaining block 714 and the second upper pressure-maintaining block 716 to press the second bending line b of the support belt 02 from the bottom and the top, so as to press and maintain the bending parts that overlap each other after bending. Example 3

[0060] like Figures 19 to 21 As shown, as an embodiment of the present invention, the third bending mechanism of the present invention includes a third support 81, a third bending assembly, a third pressure needle assembly and a third pressure-maintaining assembly, wherein the third support 81 is arranged in a direction perpendicular to the FPC support 2 during bending; the third bending assembly is arranged on the third support 81 at a 45° angle to the third support 81, and outputs rotational power in a vertical plane, and the third clamping component of the third bending assembly is arranged in the same direction as the third support 81, and is used to clamp the support belt 02 and drive the support belt 02 to flip 180°; the third pressure needle assembly The needle assembly is inserted in the third bending assembly and outputs linear power in a direction with an angle of 45° with the third support 81, so as to drive the third pressing needle 84 to extend into the third bending line c, so that the third pressing needle 84 presses the support belt 02 along the third bending line c, so as to serve as the rotation axis when the support belt 02 is rotated and bent; the third pressure-keeping assembly is arranged in the rotating part and the non-rotating part of the third bending assembly, and the third pressure-keeping assembly after bending is respectively located on the upper and lower sides of the bending point of the support belt 02, and outputs power in the vertical direction, so as to press the bending point of the support belt 02 from the upper and lower sides for pressure maintaining.

[0061] A third support plate is vertically provided on the third support 81, and the third support plate is arranged at a 45° angle with the third support 81; the third bending assembly includes a third bending cylinder 85, a third rotating block 86, a third rotating seat 87 and a third clamping component, wherein the third bending cylinder 85 is arranged on a side wall of the third support plate, and outputs rotational power in a vertical plane; the third rotating block 86 is connected to the output end of the third bending cylinder 85; the third rotating seat 87 is connected to the side wall of the third rotating block 86; the third clamping component is arranged on the third rotating seat 87, and outputs power in a vertical direction for clamping the support belt 02.

[0062] The third clamping component includes a second vertical support plate 88, a third fixed pressure block 89, a third clamping cylinder 810 and a third movable pressure block 811, wherein the second vertical support plate 88 is vertically arranged at the outer end of the third rotating seat 87; the third fixed pressure block 89 is horizontally arranged on the top of the second vertical support plate 88 and horizontally extends to one side of the second vertical support plate 88, the side of the third fixed pressure block 89 is a tooth-shaped structure, and at least two second air-avoiding clamping grooves B are arranged at intervals along the straight direction; the third clamping cylinder 810 is arranged On one side wall of the second vertical support plate 88, power is output in the vertical direction; the third movable pressure block 811 is horizontally arranged on the output end of the third clamping cylinder 810, and the side of the third movable pressure block 811 corresponds to the third fixed pressure block 89 and is provided with at least two second air avoidance clamping grooves B; in the process of clamping the support belt 02, the second air avoidance grooves B are staggered and aligned with the material taking groove D of the supporting mechanism 3 in the vertical direction, effectively preventing movement interference with the supporting mechanism 3 during the process of clamping the support belt 02 during the third bending.

[0063] Furthermore, a through slot C is provided on the third fixed pressure block 89; a transmission block 816 is connected to the output end of the third clamping cylinder 810, and the transmission block 816 extends through the through slot C to above the third fixed pressure block 89; the third movable pressure block 811 is horizontally arranged above the third fixed pressure block 89 and connected to the transmission block 816; the third clamping cylinder 810 drives the third movable pressure block 811 to approach or move away from the third fixed pressure block 89 through the transmission block 816 so as to clamp or loosen the branch belt 02.

[0064] The third pressing needle assembly includes a third pressing needle cylinder 82, a third pressing needle shaft 83 and a third pressing needle 84, wherein the third pressing needle cylinder 82 is arranged on the other side wall of the third supporting plate, and outputs power in a direction perpendicular to the third supporting plate; the third pressing needle shaft 83 is connected to the output end of the third pressing needle cylinder 82, and extends horizontally through the third supporting plate, the third bending cylinder 85 and the third rotating block 86, and is driven by the third pressing needle cylinder 82 to move freely in a straight line direction; the third pressing needle 84 is connected to the end of the third pressing needle shaft 83, and the third pressing needle 84 is coaxially arranged with the rotation center axis of the third rotating block 86.

[0065] The third pressure-maintaining assembly includes a third lower pressure-maintaining cylinder 812, a third lower pressure-maintaining block 813, a third upper pressure-maintaining cylinder 814 and a third upper pressure-maintaining block 815, wherein the third lower pressure-maintaining cylinder 812 is arranged on the third movable pressure block 811, and outputs linear power along the side direction of the third movable pressure block 811; the third lower pressure-maintaining block 813 is connected to the output end of the third lower pressure-maintaining cylinder 812 and is arranged downward, and the third lower pressure-maintaining cylinder 812 drives the third lower pressure-maintaining block 813 to move linearly; the third upper pressure-maintaining cylinder 814 is connected to the third bending cylinder 814 through a connecting plate Cylinder 85, and the output end is set downward; the third upper pressure-maintaining block 815 is connected to the output end of the third upper pressure-maintaining cylinder 715; the third lower pressure-maintaining cylinder 812 and the third lower pressure-maintaining block 813 rotate 180° to the bottom of the support belt 02 after completing the third bending with the third rotating seat 87; the third lower pressure-maintaining cylinder 812 and the third upper pressure-maintaining cylinder 814 respectively output power to drive the third lower pressure-maintaining block 813 and the third upper pressure-maintaining block 815 to press the third bending line c of the support belt 02 from below and above, so as to press and pressure the bending parts overlapping each other after bending. Example 4

[0066] like Figures 5 and 6 As shown, as an embodiment of the present invention, the present invention discloses a bending process of a flexible FPC support tape multiple bending machine, which is characterized by comprising the following process steps: S1. Flexible FPC loading: The flexible FPC to be bent is placed on the FPC support, and the portion of the support strip located at the outer end of the first bending line is suspended; S2, position adjustment: the horizontal moving mechanism and the rotating mechanism of the bending part adjust the position of the first bending mechanism to make it close to the position of the branch belt in the suspended state in step S1; S3, first bending: the first bending assembly of the first bending mechanism clamps the branch belt in the suspended state in step S1 up and down; the first pressing needle assembly drives the second pressing needle to extend to the first bending line, and after pressing the branch belt along the first bending line, the first bending assembly drives the branch belt to turn 180° around the first pressing needle to complete the first bending; S4, first bending and pressure holding: after the support strip in step S3 is bent for the first time, the position of the first bending mechanism is adjusted so that the first pressure holding component is aligned with the first bending line, and the first pressure holding component presses the support strips overlapped at the first bending line to hold the pressure; S5, second bending: after the first bending and pressure holding is completed in step S4, the position of the second bending mechanism is adjusted so that the second bending component is close to and clamps the support belt after the first bending; the second pressing needle component drives the second pressing needle to extend to the second bending line, and after pressing the support belt along the second bending line, the second bending component drives the support belt to turn 180° around the second pressing needle to complete the second bending; S6, second bending and pressure holding: after the support strip in step S5 is bent for the second time, the position of the second bending mechanism is adjusted so that the second pressure holding component is aligned with the second bending line, and the second pressure holding component presses the support strips overlapped at the second bending line up and down to hold the pressure; S7, third bending: After the second bending and pressure holding in step S6 is completed, the third bending mechanism rotates to be close to the FPC support, and the linear position is adjusted to make its third bending component close to and clamp the support belt after the second bending; the third pressing needle assembly extends to the third bending line, and after pressing the support belt along the third bending line, the third bending assembly drives the support belt to turn 180° around the third pressing needle to complete the third bending; S8, third bending and pressure holding: After the support strip in step S7 completes the third bending, adjust the position of the third bending mechanism so that the third pressure holding component is aligned with the third bending line up and down, and then the third pressure holding component presses the overlapping support strips at the third bending line up and down to perform compression and pressure holding.

[0067] The bending process of the present invention realizes inclined angle bending at three positions on the support belt 02 (the first bending line a, the second bending line b and the third bending line c). In this embodiment, the bending inclination angle is 45°. Multiple bending in any other angle direction can also be achieved by adjusting the installation angle of the pressure needle.

[0068] The embodiments of the present invention are only to introduce its specific implementation methods and are not intended to limit its protection scope. The technicians in this industry can make some modifications inspired by this embodiment, so any equivalent changes or modifications made according to the scope of the patent of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A flexible FPC strip multiple bending machine, comprising a chassis (1) having an installation space therein, characterized in that: It also includes an FPC support (2), a bearing mechanism (3) and a bending part, wherein: The FPC support (2) is erected on the chassis (1) along a straight line, and the flexible FPC (0) is placed on the FPC support (2); The flexible FPC (0) comprises an FPC belt body (01) and a branch belt (02), wherein the branch belt (02) is connected to one side of the FPC belt body (01) in parallel and at intervals, and the branch belt (02) is provided with a first bending line (a), a second bending line (b) and a third bending line (c) with an angle of 45° with respect to the side direction thereof; The bearing mechanism (3) is vertically connected to the outer side of the FPC support (2) and is used to bear the support belt (02) after bending. The bending portion is arranged in the installation space of the chassis (1) and extends above the chassis (1); the bending portion comprises a first bending mechanism (6), a second bending mechanism (7) and a third bending mechanism (8) which can move linearly and rotationally in a horizontal plane; After the first bending mechanism (6) clamps the support belt (02) at the outer end of the first bending line (a), the first pressing needle (65) is inserted to the first bending line (a), and the support belt (02) at the outer end of the first bending line (a) is driven to turn 180° along the first bending line (a) with the first pressing needle (65) as the rotation axis, thereby completing the first bending. After the first bending, the support belt (02) is supported by the supporting mechanism (3); The second bending mechanism (7) clamps the support belt (02) after the first bending, and inserts the second pressing needle (75) to the second bending line (b), driving the support belt (02) to turn 180° along the second bending line (b) with the second pressing needle (75) as the rotation axis to complete the second bending; The third bending mechanism (8) clamps the support belt (02) after the second bending, and inserts the third pressing needle (84) to the third bending line (c), driving the support belt (02) to turn 180 degrees along the third bending line (c) with the third pressing needle (84) as the rotation axis to complete the third bending.

2. The flexible FPC strip multiple bending machine according to claim 1, characterized in that: The FPC support platform (1) is a strip-shaped bearing platform used to horizontally bear the FPC belt body (01); a bearing block with a strip-shaped groove is provided at intervals on one side of the FPC support platform (1) for horizontally bearing the support belt (02); the support belt (02) at the outer end of the first bending line (a) is suspended on the side of the bearing block so as to be clamped by the first bending mechanism (6).

3. The flexible FPC tape multiple bending machine according to claim 1, characterized in that: The bearing mechanism (3) comprises a bearing component and an adsorption component, wherein the bearing component is arranged on the chassis (1) and outputs linear power in a direction perpendicular to the FPC support (2) so as to adjust the bearing position, and the bearing component horizontally bears the bent support belt (02); the adsorption component is arranged on the bearing component and outputs power in a vertical direction for adsorbing and fixing the end (03) of the support belt (02) from above; the bearing component comprises a bearing support (31), a bearing transverse displacement cylinder (32), a bearing support plate (33) and a bearing block (34), wherein the bearing support (31) is horizontally arranged on the chassis (1); the bearing transverse displacement cylinder (32) is arranged in a direction perpendicular to the FPC support (2) and outputs linear power in this direction; The bearing support plate (33) is vertically arranged and slidably connected to the bearing transverse displacement cylinder (32), and is connected to the output end of the bearing transverse displacement cylinder (32); the bearing block (34) is horizontally arranged at the top of the bearing support plate (33), and at least two material taking grooves (D) are arranged at intervals on one side of the bearing block (34) to form a tooth-like structure so that the first bending mechanism (6) can avoid air and clamp the support belt (02); the adsorption component includes an adsorption cylinder (35) and a suction nozzle (36), wherein the adsorption cylinder (35) is vertically arranged on the side wall of the bearing support plate (33), and the output end is arranged upward; the suction nozzle (36) is connected to the output end of the adsorption cylinder (35), and is arranged downward, so as to adsorb and fix the end head (03) after approaching the end head (03) from above.

4. The flexible FPC tape multiple bending machine according to claim 1, characterized in that: The bending part further comprises a horizontal moving mechanism (4) and a rotating mechanism (5), wherein the horizontal moving mechanism (4) is arranged in the chassis (1) and outputs linear power in the longitudinal and transverse directions in the horizontal plane; the rotating mechanism (5) is arranged on the output end of the horizontal moving mechanism (4) and extends upward to the surface of the chassis (1) to form a horizontal support plane, and the rotating mechanism (5) outputs rotational power in the horizontal plane to drive the horizontal support plane to rotate; the first bending mechanism (6), the second bending mechanism (7) and the third bending mechanism (8) are arranged on the horizontal support plane.

5. The flexible FPC tape multiple bending machine according to claim 1, characterized in that: The first bending mechanism (6) comprises a first oblique push assembly, a first bending assembly, a first pressure needle assembly and a first pressure-maintaining assembly, wherein the first oblique push assembly outputs power in a direction perpendicular to the FPC support (2); the first bending assembly is arranged on the first oblique push assembly in a direction at an angle of 45° to the first oblique push assembly, and outputs rotational power in a vertical plane; the first clamping component of the first bending assembly is arranged perpendicular to the first oblique push assembly, and is used to clamp the support belt (02) and drive the support belt (02) to flip 180°; the first pressure needle assembly is inserted in the first bending assembly, and A linear power is outputted in a direction at an angle of 45° to the first oblique thrust component, so as to drive the first pressing needle (65) thereof to extend into the first bending line (a), so that the first pressing needle (65) presses the support belt (02) along the first bending line (a), so as to serve as a rotation axis when the support belt (02) is rotated and bent; the first pressure-maintaining component is arranged at the rotating part and the non-rotating part of the first bending component, and the first pressure-maintaining component after bending is respectively located at the upper and lower sides of the bending part of the support belt (02), and power is outputted in a vertical direction, so as to press the bending part of the support belt (02) from the upper and lower sides to maintain pressure.

6. The flexible FPC tape multiple bending machine according to claim 5, characterized in that: The first oblique thrust assembly comprises a first oblique drive cylinder (61) and a first support (62), wherein the first oblique drive cylinder (61) is horizontally arranged in a direction perpendicular to the FPC support platform (2) and outputs linear power in this direction; the first support (62) is slidably arranged on the first oblique drive cylinder (61) and connected to the output end of the first oblique drive cylinder (61); a first support plate is vertically arranged on the first support (62), and the first support plate is arranged in a direction with an angle of 45° with the first oblique drive cylinder (61); The first bending assembly comprises a first bending cylinder (66), a first rotating block (67), a first rotating seat (68) and a first clamping component, wherein the first bending cylinder (66) is arranged on a side wall of the first support plate and outputs rotational power in a vertical plane; the first rotating block (67) is connected to the output end of the first bending cylinder (66); the first rotating seat (68) is connected to the side wall of the first rotating block (67) and extends in a direction perpendicular to the first oblique drive cylinder (61); the first clamping component is arranged on the first rotating seat (68) and outputs power in a vertical direction for clamping the support belt (02).

7. The flexible FPC strip multiple bending machine according to claim 6, characterized in that: The first pressing needle assembly comprises a first pressing needle cylinder (63), a first pressing needle shaft (64) and a first pressing needle (65), wherein the first pressing needle cylinder (63) is arranged on the other side wall of the first supporting plate and outputs power in a direction perpendicular to the first supporting plate; the first pressing needle shaft (64) is connected to the output end of the first pressing needle cylinder (63), and extends horizontally through the first supporting plate, the first bending cylinder (66) and the first rotating block (67), and is driven by the first pressing needle cylinder (63) to move freely in a straight line direction; the first pressing needle (65) is connected to the end of the first pressing needle shaft (64), and the first pressing needle (65) is coaxially arranged with the rotation center axis of the first rotating block (67).

8. The flexible FPC tape multiple bending machine according to claim 7, characterized in that: The first pressure-maintaining assembly comprises a first lower pressure-maintaining cylinder (612), a first lower pressure-maintaining block (613), a first upper pressure-maintaining cylinder (614) and a first upper pressure-maintaining block (615), wherein the first lower pressure-maintaining cylinder (612) is arranged on the first rotating seat (68) and outputs power in the vertical direction; the first lower pressure-maintaining block (613) is connected to the output end of the first lower pressure-maintaining cylinder (612); the first upper pressure-maintaining cylinder (614) is connected to the first bending cylinder (66) through a connecting plate, and the output end is arranged downward; the first upper pressure-maintaining block (615) is connected to the output end of the first upper pressure-maintaining cylinder (614); the first lower pressure-maintaining cylinder (612) and the first lower pressure-maintaining block (613) rotate to the bottom of the support belt (02) after completing the first bending with the first rotating seat (68); the first lower pressure-maintaining cylinder (612) and the first upper pressure-maintaining cylinder (614) respectively output power to drive the first lower pressure-maintaining block (613) and the first upper pressure-maintaining block (615) to press the first bending line (a) of the support belt (02) from the bottom and the top, so as to press and maintain the bending parts that overlap each other after bending.

9. The flexible FPC tape multiple bending machine according to claim 1, characterized in that: The second bending mechanism comprises a second oblique push assembly, a second bending assembly, a second pressure needle assembly and a second pressure-maintaining assembly, wherein the second oblique push assembly outputs power in a direction perpendicular to the FPC support (2); the second bending assembly is arranged on the second oblique push assembly in a direction at an angle of 45° to the second oblique push assembly and outputs rotational power in a vertical plane; the second clamping component of the second bending assembly is arranged perpendicular to the second oblique push assembly and is used to clamp the support belt (02) and drive the support belt (02) to flip 180°; the second pressure needle assembly is inserted in the second bending assembly and is arranged in a direction perpendicular to the FPC support (2); A linear power is outputted in a direction with an angle of 45° with the second oblique thrust component, so as to drive the second pressing needle (75) thereof to extend into the second bending line (b), so that the second pressing needle (75) presses the support belt (02) along the second bending line (b), so as to serve as a rotation axis when the support belt (02) is rotated and bent; the second pressure-maintaining component is arranged at the rotating part and the non-rotating part of the first bending component, and the second pressure-maintaining component after bending is respectively located at the upper and lower sides of the bending part of the support belt (02), and power is outputted in a vertical direction, so as to press the bending part of the support belt (02) from the upper and lower sides to maintain pressure.

10. The flexible FPC tape multiple bending machine according to claim 1, characterized in that: The third bending mechanism comprises a third support (81), a third bending assembly, a third pressure needle assembly and a third pressure-maintaining assembly, wherein the third support (81) is arranged in a direction perpendicular to the FPC support (2); the third bending assembly is arranged on the third support (81) in a direction at an angle of 45° with the third support (81) and outputs rotational power in a vertical plane; the third clamping component of the third bending assembly is arranged in the same direction as the third support (81) and is used to clamp the support belt (02) and drive the support belt (02) to flip 180°; the third pressure needle assembly is inserted into the third bending assembly The third pressure-maintaining component is arranged in a rotating part and a non-rotating part of the third bending component, and the third pressure-maintaining component is respectively located at the upper and lower sides of the bending part of the branch belt (02) after bending, and outputs a linear power in a direction with an angle of 45° with the third support (81), so as to drive the third pressure needle (84) to extend into the third bending line (c), so that the third pressure needle (84) presses the branch belt (02) along the third bending line (c), so as to serve as a rotation axis when the branch belt (02) is rotated and bent; the third pressure-maintaining component is arranged in a rotating part and a non-rotating part of the third bending component, and the third pressure-maintaining component after bending is respectively located at the upper and lower sides of the bending part of the branch belt (02), and outputs power in a vertical direction, so as to press the bending part of the branch belt (02) from the upper and lower sides to maintain the pressure.

11. A bending process of a flexible FPC strip multiple bending machine as claimed in any one of claims 1 to 10, characterized in that: The process steps include: S1. Flexible FPC loading: The flexible FPC to be bent is placed on the FPC support, and the portion of the support strip located at the outer end of the first bending line is suspended; S2, position adjustment: the horizontal moving mechanism and the rotating mechanism of the bending part adjust the position of the first bending mechanism to make it close to the position of the branch belt in the suspended state in step S1; S3, first bending: the first bending assembly of the first bending mechanism clamps the branch belt in the suspended state in step S1 up and down; the first pressing needle assembly drives the second pressing needle to extend to the first bending line, and after pressing the branch belt along the first bending line, the first bending assembly drives the branch belt to turn 180° around the first pressing needle to complete the first bending; S4, first bending and pressure holding: after the support strip in step S3 is bent for the first time, the position of the first bending mechanism is adjusted so that the first pressure holding component is aligned with the first bending line, and the first pressure holding component presses the support strips overlapped at the first bending line to hold the pressure; S5, second bending: after the first bending and pressure holding is completed in step S4, the position of the second bending mechanism is adjusted so that the second bending component is close to and clamps the support belt after the first bending; the second pressing needle component drives the second pressing needle to extend to the second bending line, and after pressing the support belt along the second bending line, the second bending component drives the support belt to turn 180° around the second pressing needle to complete the second bending; S6, second bending and pressure holding: after the support strip in step S5 is bent for the second time, the position of the second bending mechanism is adjusted so that the second pressure holding component is aligned with the second bending line, and the second pressure holding component presses the support strips overlapped at the second bending line up and down to hold the pressure; S7, third bending: After the second bending and pressure holding in step S6 is completed, the third bending mechanism rotates to be close to the FPC support, and the linear position is adjusted to make its third bending component close to and clamp the support belt after the second bending; the third pressing needle assembly extends to the third bending line, and after pressing the support belt along the third bending line, the third bending assembly drives the support belt to turn 180° around the third pressing needle to complete the third bending; S8, third bending and pressure holding: After the support strip in step S7 completes the third bending, adjust the position of the third bending mechanism so that the third pressure holding component is aligned with the third bending line up and down, and then the third pressure holding component presses the overlapping support strips at the third bending line up and down to perform compression and pressure holding.

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