Device for bending flexible printed circuit (FPC) at any angle and maintaining pressure and automatic bending machine thereof

Abstract

The invention discloses a flexible FPC arbitrary angle bending and pressure maintaining device and an automatic bending machine thereof.The device comprises a first inclined pushing assembly, a first bending assembly, a first pressing needle assembly and a first pressure maintaining assembly, and the first inclined pushing assembly is arranged in the direction perpendicular to an FPC supporting table; the first bending assembly is arranged in a plane inclined to the first inclined pushing assembly and is connected with the output end of the first inclined pushing assembly; a first clamping component of the first bending assembly is perpendicular to the first inclined pushing assembly. The first needle pressing assembly is inserted into the first bending assembly; the first pressure maintaining assembly is arranged on the rotating part and the non-rotating part of the first bending assembly. Bending at any angle position on a flexible FPC belt body is achieved by adjusting the angle of the pressing needle, local pressing at the bending line in the bending process is achieved, the situation of local upwarp in the bending process is avoided, the bending position precision is improved, the bending thickness and the bending radian can be accurately controlled through the outer diameter of the pressing needle, and the bending accuracy is improved. And the surface flatness of the 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 device for bending and maintaining pressure of a flexible FPC at any angle. 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 the strip of the flexible FPC. Due to the flexibility 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 of the flexible FPC after the bending line is bent cannot be guaranteed during the bending process, and the bending line after bending often bends, which will result in the strip being unable to be accurately bent to the required position. The technical means adopted in the prior art generally involves setting an adsorption platform according to the shape of the required bending position to adsorb and fix the unbent part of the strip of the flexible FPC, and then bending the bent part of the strip. This fixing method cannot completely avoid the position deviation such as local warping caused by the internal stress of the strip itself during the bending process due to the instability of the vacuum adsorption force; and based on the existing bending technology, it is impossible to achieve bending of any different angles on the strip of the flexible FPC. 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 device for bending and maintaining pressure at any angle on a flexible FPC belt body by using a movable pressing pin as an angle control structure during the bending process, adjusting the angle of the pressing pin to achieve bending at any angle on the flexible FPC belt body, and achieving 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 belt body after bending.

[0005] The technical solution adopted by the present invention is as follows: a device for bending and holding pressure of a flexible FPC at any angle, which is arranged on one side of the FPC support of an automatic bending machine for a flexible FPC, and is used to automatically bend the flexible FPC placed on the FPC support, comprising a first oblique push assembly, a first bending assembly, a first pressure needle assembly and a first pressure holding assembly, wherein the first oblique push assembly is arranged in a direction perpendicular to the FPC support, and outputs linear power in this direction; the first bending assembly is arranged in a plane inclined to the first oblique push assembly, and is connected to the output end of the first oblique push assembly, and outputs rotational power in the inclined plane; the angle between the inclined plane and the first oblique push assembly is a; the first clamping component of the first bending assembly is perpendicular to the first An oblique push assembly is provided, and the first clamping component is used to clamp the flexible FPC and drive the flexible FPC to flip 180° in an inclined plane to complete the bending; the first pressure needle assembly is inserted in the first bending assembly, and outputs linear power in a direction perpendicular to the inclined plane, so as to drive its first pressure needle to extend into the bending line of the flexible FPC, so that the first pressure needle presses the flexible FPC along the bending line, so as to serve as the rotation axis when the flexible FPC is rotated and bent; the first pressure holding assembly is arranged in the rotating part and the non-rotating part of the first bending assembly, and the first pressure holding assembly after bending is respectively located on the upper and lower sides of the bending place of the flexible FPC, and outputs power in the vertical direction, so as to press the bending place of the flexible FPC from the upper and lower sides for pressure holding.

[0006] Preferably, the angle a ranges from 0° to 180°.

[0007] 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 a with the first oblique drive cylinder.

[0008] Preferably, 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 flexible FPC.

[0009] Preferably, the outer end of the first rotating seat is provided with a vertical support plate extending vertically upward; the first clamping component includes a first fixed pressure block, a first clamping cylinder and a first movable pressure block, the first fixed pressure block is arranged on the top of the vertical support plate and extends horizontally, and an elastic block is provided at the bottom of the horizontal extension; the first clamping cylinder is arranged close to the vertical support plate, and the output end is arranged upward; the first movable pressure block is horizontally arranged on the output end of the first clamping cylinder, and an elastic block is provided on the top of the first movable pressure block, and after the first movable pressure block and the first fixed pressure block clamp the flexible FPC, they rotate as a whole with the first rotating seat, so that the flexible FPC completes a 180° flip turn.

[0010] 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.

[0011] Preferably, the first pressure-maintaining assembly includes a first lower pressure-maintaining cylinder and a first lower pressure-maintaining block, wherein the first lower pressure-maintaining cylinder is arranged on the first rotating seat and outputs power in a vertical direction; the first lower pressure-maintaining block is connected to the output end of the first lower pressure-maintaining cylinder.

[0012] Preferably, the first pressure-maintaining assembly also includes a first upper pressure-maintaining cylinder and a first upper pressure-maintaining block. 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 flexible FPC; 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 bending line of the flexible FPF from below and above, so as to press and pressure the bending parts overlapping each other after bending.

[0013] The beneficial effects of the present invention are: In view of the defects and shortcomings of the prior art, the present invention independently developed and designed a device that uses a movable pressing needle as an angle control structure in the bending process, realizes bending at any angle on the flexible FPC belt body by adjusting the angle of the pressing needle, and realizes local compression at the bending line during the bending process, avoids local warping during the bending process, improves the bending position accuracy, and can accurately control the bending thickness and bending curvature through the outer diameter of the pressing needle, thereby improving the surface flatness of the belt body after bending. The device is a flexible FPC arbitrary angle bending and pressure holding device.

[0014] The present invention belongs to the core part of the flexible FPC automatic bending machine, and mainly realizes the automatic bending of the flexible FPC. The special feature of the present invention is that the pressure needle is used as the rotation center axis during bending. The function of the pressure needle can realize the downward pressure and fixation of the bending line of the flexible FPC belt body during the bending process, reduce the situation that the local warping of the belt body during bending and other factors affect its position accuracy. At the same time, when bending, the belt body 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 the pressure needle to assist in providing the bending rotation center can realize bending at any angle on the belt body by adjusting the angle range between the pressure needle and the belt body, which can adapt to various angle bending scenarios of the flexible FPC belt body 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

[0015] Figure 1 This is one of the three-dimensional structural schematic diagrams of Example 1 of the present invention.

[0016] Figure 2 This is the second schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0017] Figure 3 This is the third schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0018] Figure 4 This is one of the three-dimensional structural schematic diagrams of Example 2 of the present invention.

[0019] Figure 5 This is the second schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0020] Figure 6 This is the third schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0021] Figure 7 This is one of the three-dimensional structural schematic diagrams of Example 3 of the present invention.

[0022] Figure 8 This is the second schematic diagram of the three-dimensional structure of Example 3 of the present invention.

[0023] Fig. 9 This is the third schematic diagram of the three-dimensional structure of Example 3 of the present invention.

[0024] Fig.10 It is a schematic diagram of the present invention being bent at an angle of 45°.

[0025] In the figure: 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 pressure block; 610. First clamping cylinder; 611. First movable pressure 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; 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 pressing block; 711. Second pressing cylinder; 712. Second movable pressing 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; 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

[0026] 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.

[0027] 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.

[0028] 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

[0029] like Figures 1 to 3As shown, the present invention proposes a device for bending and holding a flexible FPC at any angle, which is arranged on one side of the FPC support of the flexible FPC automatic bending machine and is used to automatically bend the flexible FPC placed on the FPC support, including a first oblique push component, a first bending component, a first pressure needle component and a first pressure holding component, wherein the first oblique push component is arranged in a direction perpendicular to the FPC support and outputs linear power in this direction; the first bending component is arranged in a plane inclined to the first oblique push component, and is connected to the output end of the first oblique push component, and outputs rotational power in the inclined plane; the angle between the inclined plane and the first oblique push component is a; the first clamping component of the first bending component is perpendicular to the first oblique push component The first clamping component is used to clamp the flexible FPC and drive the flexible FPC to flip 180° in the inclined plane to complete the bending; the first pressure needle assembly is inserted in the first bending assembly, and outputs linear power in a direction perpendicular to the inclined plane, used to drive its first pressure needle 65 to extend into the bending line of the flexible FPC, so that the first pressure needle 65 presses the flexible FPC along the bending line, so as to serve as the rotation axis when the flexible FPC is rotated and bent; the first pressure holding assembly is arranged in the rotating part and the non-rotating part of the first bending assembly, and the first pressure holding assembly after bending is respectively located on the upper and lower sides of the bending place of the flexible FPC, and outputs power in the vertical direction, so as to press the bending place of the flexible FPC from the upper and lower sides for pressure holding.

[0030] The value range of the angle a is 0° to 180°.

[0031] 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 platform 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 a with the first oblique drive cylinder 61.

[0032] The first bending assembly includes 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 flexible FPC.

[0033] The outer end of the first rotating seat 68 is provided with a vertical support plate extending vertically upward; the first clamping component 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 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 an elastic block is provided on the top. After the first movable pressure block 611 and the first fixed pressure block 69 clamp the flexible FPC, they rotate as a whole with the first rotating seat 68, so that the flexible FPC completes a 180° flip turn.

[0034] 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.

[0035] The first pressure-maintaining assembly includes a first lower pressure-maintaining cylinder 612 and a first lower pressure-maintaining block 613 , wherein the first lower pressure-maintaining cylinder 612 is disposed on the first rotating seat 68 and outputs power in a vertical direction; the first lower pressure-maintaining block 613 is connected to the output end of the first lower pressure-maintaining cylinder 612 .

[0036] The first pressure-maintaining component also includes a first upper pressure-maintaining cylinder 614 and a first upper pressure-maintaining block 615. The first upper pressure-maintaining cylinder 614 is connected to the first bending cylinder 66 through a connecting plate, and the output end is set downward; the first upper pressure-maintaining 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 flexible FPC; 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 bending line of the flexible FPF from the bottom and the top, so as to press and pressure the bending parts that overlap each other after bending.

[0037] Furthermore, the present invention designs a device that uses a movable pressing pin as an angle control structure during the bending process, and realizes bending at any angle on the flexible FPC belt by adjusting the angle of the pressing pin, and realizes 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 belt after bending. This device can be used for bending and maintaining pressure at any angle of the flexible FPC. The present invention belongs to the core part of the flexible FPC automatic bending machine, and mainly realizes the automatic bending of the flexible FPC. The special feature of the present invention is that the pressure needle is used as the rotation center axis during bending. The function of the pressure needle can realize the downward pressure and fixation of the bending line of the flexible FPC belt body during the bending process, reduce the situation that the local warping of the belt body during bending and other factors affect its position accuracy. At the same time, when bending, the belt body 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 the pressure needle to assist in providing the bending rotation center can realize bending at any angle on the belt body by adjusting the angle range between the pressure needle and the belt body, which can adapt to various angle bending scenarios of the flexible FPC belt body 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

[0038] like Figures 4 to 6As shown, as an embodiment of the present invention, 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; the second bending assembly is arranged on the second oblique push assembly along the angle direction with the second oblique push assembly a, 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 flexible FPC and drive the flexible FPC to flip 180°; the second pressure needle assembly is inserted into the second bending assembly, and outputs linear power in the angle direction with the second oblique push assembly a, and is used to drive its second pressure needle 75 to extend into the bending line, so that the second pressure needle 75 presses the flexible FPC along the bending line, so as to serve as the rotation axis when the flexible FPC is rotated and bent; the second pressure-maintaining assembly is arranged at the rotating part and the non-rotating part of the second bending assembly, and the second pressure-maintaining assembly after bending is respectively located on the upper and lower sides of the bending place of the flexible FPC, and outputs power in the vertical direction, so as to press the bending place of the flexible FPC from the upper and lower sides for pressure maintenance.

[0039] 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 platform 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 a with the second oblique drive cylinder 61; the second bending assembly includes a second bending cylinder 76, 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 flexible FPC.

[0040] 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 toothed 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 arranged on a 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 at least two first air-avoiding clamping grooves A are opened on the side of the second movable pressure block 712 corresponding to the second fixed pressure block 710; in the process of clamping the flexible FPC, the first air-avoiding groove A is staggered and aligned with the groove body on the FPC support in the vertical direction, which effectively prevents movement interference with the FPC support during the process of clamping the flexible FPC during the second bending.

[0041] 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.

[0042] 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; the second lower pressure-maintaining cylinder 713 and the second lower pressure-maintaining block 714 rotate to the bottom of the flexible FPC after completing the second bending with the second rotating seat 78; 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 bending line of the flexible FPC from the bottom and the top, so as to press and maintain the bending parts that overlap each other after bending. Example 3

[0043] like Figures 7 to 9As shown, as an embodiment of the present invention, 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 when bending; the third bending assembly is arranged on the third support 81 in a direction with an angle a with 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 flexible FPC and drive the flexible FPC to flip 180°; the third pressure needle assembly The component is inserted in the third bending component and outputs linear power in the direction of the angle a with the third support 81, so as to drive the third pressing needle 84 to extend into the bending line, so that the third pressing needle 84 presses the flexible FPC along the bending line, so as to serve as the rotation axis when the flexible FPC is rotated and bent; the third pressure-keeping component is arranged in the rotating part and the non-rotating part of the third bending component, and the third pressure-keeping component after bending is respectively located on the upper and lower sides of the bending place of the flexible FPC, and outputs power in the vertical direction, so as to press the bending place of the flexible FPC from the upper and lower sides for pressure maintaining.

[0044] A third support plate is vertically provided on the third support 81, and the third support plate is arranged along the angle a direction 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 the vertical direction for clamping the flexible FPC.

[0045] 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 at the top of the second vertical support plate 88 and extends horizontally to one side of the second vertical support plate 88, the side of the third fixed pressure block 89 is a toothed 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 a side wall of the second vertical support plate 88 and outputs power in the vertical direction; the third movable pressure block 811 is horizontally arranged on the output end of the third clamping cylinder 810, and at least two second air-avoiding clamping grooves B are opened on the side of the third movable pressure block 811 corresponding to the third fixed pressure block 89; in the process of clamping the flexible FPC, the second air-avoiding grooves B are staggered and aligned with the groove body on the FPC support in the vertical direction, which effectively prevents the motion interference with the FPC support during the process of clamping the flexible FPC during the second bending.

[0046] 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 release the flexible FPC.

[0047] 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.

[0048] 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 flexible FPC 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 bending line of the flexible FPC from below and above, so as to press and pressure the bending parts overlapping each other after bending. Example 4

[0049] like Fig. 9As shown in the figure, as an embodiment of the present invention, the angle a in this embodiment is 45°, that is, during the bending process, the first pressing needle, the second pressing needle or the third pressing needle presses the flexible FPC at a 45° angle to the flexible FPC, and the contact line between the first pressing needle, the second pressing needle or the third pressing needle and the flexible FPC belt body is the bending line. During the bending process, the bent belt body rotates 180° along the bending line with the first pressing needle, the second pressing needle or the third pressing needle as the rotation center to complete the bending; the bent belt body is perpendicular to the original belt body; the flexible FPC belt body can be bent at any angle by adjusting the value range of the angle a.

[0050] 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 device for bending and maintaining pressure of a flexible FPC at any angle, arranged on one side of the FPC support of an automatic flexible FPC bending machine, for automatically bending the flexible FPC placed on the FPC support, characterized in that: It 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 thrust assembly is arranged in a direction perpendicular to the FPC support and outputs linear power in this direction; The first bending assembly is arranged in a plane inclined with the first oblique thrust assembly, connected with the output end of the first oblique thrust assembly, and outputs rotational power in the inclined plane; the angle between the inclined plane and the first oblique thrust assembly is a; The first clamping component of the first bending assembly is arranged perpendicular to the first oblique push assembly, and the first clamping component is used to clamp the flexible FPC and drive the flexible FPC to flip 180 degrees in the inclined plane to complete the bending; The first pressing needle assembly is inserted into the first bending assembly and outputs linear power in a direction perpendicular to the inclined plane, so as to drive the first pressing needle (65) thereof to extend into the bending line of the flexible FPC, so that the first pressing needle (65) presses the flexible FPC along the bending line, so as to serve as a rotation axis when the flexible FPC 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. The first pressure-maintaining component after bending is respectively located at the upper and lower sides of the bending part of the flexible FPC, and outputs power in the vertical direction so as to press the bending part of the flexible FPC from the upper and lower sides for maintaining pressure.

2. A device for bending and maintaining pressure of a flexible FPC at any angle according to claim 1, characterized in that: The angle a ranges from 0° to 180°.

3. The device for bending and maintaining pressure of a flexible FPC at any angle according to claim 1, 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 and outputs linear power in the 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 a with the first oblique drive cylinder (61).

4. The device for bending and maintaining pressure of a flexible FPC at any angle according to claim 3, characterized in that: 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 supporting 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 flexible FPC.

5. The device for bending and maintaining pressure of a flexible FPC at any angle according to claim 4, characterized in that: The outer end of the first rotating seat (68) is provided with a vertical support plate extending vertically upward; the first clamping component 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 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 an elastic block is provided on the top. After the first movable pressure block (611) and the first fixed pressure block (69) clamp the flexible FPC, they rotate as a whole with the first rotating seat (68), so that the flexible FPC completes a 180° flip turn.

6. The device for bending a flexible FPC at any angle and maintaining pressure according to claim 4, 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).

7. The device for bending a flexible FPC at any angle and maintaining pressure according to claim 4, characterized in that: The first pressure-maintaining component comprises a first lower pressure-maintaining cylinder (612) and a first lower pressure-maintaining block (613), wherein the first lower pressure-maintaining cylinder (612) is arranged on the first rotating seat (68) and outputs power in a vertical direction; and the first lower pressure-maintaining block (613) is connected to the output end of the first lower pressure-maintaining cylinder (612).

8. The device for bending a flexible FPC at any angle and maintaining pressure according to claim 7, characterized in that: The first pressure-maintaining component also includes a first upper pressure-maintaining cylinder (614) and a first upper pressure-maintaining block (615). 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); 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 flexible FPC; 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 bending line of the flexible FPF from the bottom and the top, so as to press and maintain the bending parts that overlap each other after bending.

9. An automatic bending machine comprising the device for bending and maintaining pressure at any angle of a flexible FPC as claimed in any one of claims 1 to 8.

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