A device for bending and maintaining pressure at any angle of flexible FPC and its automatic bending machine

Abstract

The present invention discloses a device for bending and maintaining pressure at any angle of a flexible FPC and an automatic bending machine thereof, comprising 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 is arranged in a direction perpendicular to the FPC support; the first bending assembly is arranged in a plane inclined to the first oblique push assembly and connected to the output end of the first oblique push assembly; the first clamping component of the first bending assembly is arranged perpendicular to the first oblique push assembly; the first pressure needle assembly is inserted into the first bending assembly; and the first pressure-maintaining assembly is arranged at the rotating part and the non-rotating part of the first bending assembly. The present invention realizes bending at any angle on the flexible FPC strip by adjusting the angle of the pressure needle, and realizes local compression of the bending line during the bending process, thereby avoiding local warping during the bending process and improving the accuracy of the bending position. Moreover, the outer diameter of the pressure needle can accurately control the bending thickness and bending curvature, thereby improving the surface flatness of the strip after bending.

Description

Technical Field

[0001] The present invention relates to the field of flexible printed circuit board (FPC) manufacturing equipment, and in particular to a device for bending a flexible FPC at any angle and maintaining pressure. Background Art

[0002] Flexible printed circuits, also known as "FPCs," are printed circuit boards made from a flexible insulating substrate. FPCs offer excellent electrical performance, meeting the demands of smaller and higher-density designs, while also helping to reduce assembly steps and enhance reliability. FPCs can be bent, rolled, and folded freely, enduring millions of dynamic bends without damaging the conductors. They can be arranged arbitrarily to meet spatial layout requirements and moved and expanded in three dimensions, integrating component assembly and wiring connections. They can also significantly reduce the size and weight of electronic products, meeting the needs of the trend toward higher density, miniaturization, and higher reliability.

[0003] In the actual manufacturing process, it is necessary to bend the flexible FPC strip. 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 of the flexible FPC after the bending line is bent cannot be guaranteed during the bending process. The bending line after bending often bends, which will cause the strip 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 flexible FPC strip, and then bend the bent part of the strip. This fixing method cannot completely avoid the local warping and other position deviations 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 flexible FPC strip. In addition, the flexible FPC after bending generally needs to be bonded and fixed to each other by adhesives such as foam. The foam is generally set at the side attachment of the bending line and is 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 flatness of the belt surface 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 existing technologies and provide a device for bending and maintaining pressure at any angle on the flexible FPC belt body by using a movable pressing pin as an angle control structure during the bending process, and adjusting the angle of the pressing pin to achieve bending at any angle position on the flexible FPC belt body, 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 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 flexible FPC bending machine and is used to automatically bend the flexible FPC placed on the FPC support, comprising 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 along the 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 part of the first bending component 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, used 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 provided 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 point of the flexible FPC, and outputs power in the vertical direction, so as to press the bending point of the flexible FPC from the upper and lower sides for maintaining pressure.

[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 along 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 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 its horizontally extended bottom is provided with an elastic block; 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. 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 pressure needle assembly includes a first pressure needle cylinder, a first pressure needle shaft and a first pressure needle, wherein the first pressure 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 pressure needle shaft is connected to the output end of the first pressure 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 pressure needle cylinder to move freely in a straight line direction; the first pressure needle is connected to the end of the first pressure needle shaft, and the first pressure 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 the 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 set 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 the bottom and top, which is used to press and pressure the bending parts that overlap up and down after bending.

[0013] The beneficial effects of the present invention are:

[0014] In view of the defects and shortcomings of the existing technology, the present invention independently developed and designed a device that uses a movable pressing pin as an angle control structure during the bending process. By adjusting the angle of the pressing pin, bending at any angle position on the flexible FPC belt can be achieved, and local compression at the bending line during the bending process is achieved, 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 is a flexible FPC arbitrary angle bending and pressure maintaining device.

[0015] 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 is to realize the downward pressure and fixation of the bending line of the flexible FPC belt body during the bending process, thereby reducing the situation that the local warping of the belt body during bending affects 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. It 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 pressure needle of the present invention is perpendicular to the bending rotation plane (that is, the plane on which the bending assembly drives the flexible FPC to rotate after clamping it), and can movably pass through the bending assembly. The bending action of the bending assembly does not affect the position of the pressure needle, that is, the bending rotation action and the pressure needle do not produce motion interference, and the pressure needle is coaxially arranged with the rotation center of the bending assembly, that is, the bending assembly drives the flexible FPC to complete the rotational bending action with the straight line where the pressure needle is located as the rotation center; at the same time, the pressure needle is retractable in the straight line direction so that it can extend into or away from the bending line of the flexible FPC strip before and after bending. Furthermore, due to the influence of the internal stress of the flexible FPC strip, the strip will have a rebound tendency after being bent, resulting in bending failure. In order to ensure the stability of the adhesion between the strips after bending and overlapping through foam, the bending assembly of the present invention is also provided with a pressure-holding mechanism. By respectively arranging the upper and lower parts of the pressure-holding mechanism on the rotating part and the non-rotating part of the bending assembly, the pressure-holding mechanism arranged on the non-rotating part is pre-installed and adjusted above the bending line after bending, and the pressure-holding mechanism arranged on the rotating part is located below the flexible FPC strip after following the rotation and bending of the bending assembly. By outputting linear power, the flexible FPC strip is pressed from the upper and lower sides of the bending line, thereby achieving pressure maintenance on the bent strip, effectively overcoming the internal stress of the strip, and maintaining the position accuracy of the bent strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is one of the three-dimensional structural schematic diagrams of Example 1 of the present invention.

[0017] Figure 2 This is the second schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0018] Figure 3 This is the third schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0019] Figure 4 This is one of the three-dimensional structural schematic diagrams of Example 2 of the present invention.

[0020] Figure 5 This is the second schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0021] Figure 6 This is the third schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0022] Figure 7 This is one of the three-dimensional structural diagrams of Example 3 of the present invention.

[0023] Figure 8 This is the second schematic diagram of the three-dimensional structure of Example 3 of the present invention.

[0024] Figure 9 This is the third schematic diagram of the three-dimensional structure of Example 3 of the present invention.

[0025] Figure 10 This is a schematic diagram of the present invention being bent at a 45° angle.

[0026] In the picture:

[0027] 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 pressing 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;

[0028] 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 pressing 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;

[0029] 81. Third support; 82. Third pressure needle cylinder; 83. Third pressure needle shaft; 84. Third pressure needle; 85. Third bending cylinder; 86. Third rotating block; 87. Third rotating seat; 88. Second vertical support plate; 89. Third fixed pressure block; 810. Third clamping cylinder; 811. Third movable pressure block; 812. Third lower pressure-maintaining cylinder; 813. Third lower pressure-maintaining block; 814. Third upper pressure-maintaining cylinder; 815. Third upper pressure-maintaining block; B. Second air-avoiding clamping groove; C. Through groove; 816. Transmission block. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] 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 and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0033] like Figures 1 to 3As shown, the present invention proposes a device for bending and holding pressure at any angle of a flexible FPC, which is arranged on one side of the FPC support of an automatic flexible FPC bending machine 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 along the 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 part of the first bending assembly is perpendicular to the first oblique push assembly 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 the direction perpendicular to the inclined plane, which is 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. After bending, the first pressure holding assembly 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 maintaining pressure.

[0034] The value range of the angle a is 0° to 180°.

[0035] 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.

[0036] 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.

[0037] 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 its horizontally extended bottom is provided with an elastic block; the first clamping cylinder 610 is arranged close to the vertical support plate, and the output end is set 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.

[0038] 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 support plate and outputs power in a direction perpendicular to the first support 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 support 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.

[0039] 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 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 .

[0040] The first pressure-maintaining assembly 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 top, which is used to press and pressure the bending parts that overlap up and down after bending.

[0041] 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 position 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, 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 belt after bending. The 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 is to realize the downward pressure and fixation of the bending line of the flexible FPC belt body during the bending process, thereby reducing the situation that the local warping of the belt body during bending affects 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. It 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 pressure needle of the present invention is perpendicular to the bending rotation plane (that is, the plane on which the bending assembly drives the flexible FPC to rotate after clamping it), and can movably pass through the bending assembly. The bending action of the bending assembly does not affect the position of the pressure needle, that is, the bending rotation action and the pressure needle do not produce motion interference, and the pressure needle is coaxially arranged with the rotation center of the bending assembly, that is, the bending assembly drives the flexible FPC to complete the rotational bending action with the straight line where the pressure needle is located as the rotation center; at the same time, the pressure needle is retractable in the straight line direction so that it can extend into or away from the bending line of the flexible FPC strip before and after bending. Furthermore, due to the influence of the internal stress of the flexible FPC strip, the strip will have a rebound tendency after being bent, resulting in bending failure. In order to ensure the stability of the adhesion between the strips after bending and overlapping through foam, the bending assembly of the present invention is also provided with a pressure-holding mechanism. By respectively arranging the upper and lower parts of the pressure-holding mechanism on the rotating part and the non-rotating part of the bending assembly, the pressure-holding mechanism arranged on the non-rotating part is pre-installed and adjusted above the bending line after bending, and the pressure-holding mechanism arranged on the rotating part is located below the flexible FPC strip after following the rotation and bending of the bending assembly. By outputting linear power, the flexible FPC strip is pressed from the upper and lower sides of the bending line, thereby achieving pressure maintenance on the bent strip, effectively overcoming the internal stress of the strip, and maintaining the position accuracy of the bent strip. Example 2

[0042] 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 holding 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 an 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 a direction with an 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 holding assembly is arranged at the rotating part and the non-rotating part of the second bending assembly, and the second pressure holding assembly after bending is located on the upper and lower sides of the bending point of the flexible FPC, respectively, and outputs power in the vertical direction, so as to press the bending point of the flexible FPC from the upper and lower sides for pressure holding.

[0043] The second oblique thrust assembly includes a second oblique drive 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 when 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 a with the second oblique drive cylinder 71; 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 the vertical direction for clamping the flexible FPC.

[0044] The second clamping component includes a first vertical support plate 79, a second fixed pressure block 710, a second pressing 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 edge 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 pressing cylinder 711 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 pressing cylinder 711, and at least two first air-avoiding clamping grooves A are opened on the side edge 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, effectively preventing movement interference with the FPC support during the process of clamping the flexible FPC during the second bending.

[0045] 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.

[0046] 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 flexible FPC; 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 top, which is used to press and maintain the bending parts that overlap up and down after bending. Example 3

[0047] 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 holding assembly, wherein the third support 81 is arranged perpendicular to the FPC support when bending; the third bending assembly is arranged on the third support 81 at an angle a with the third support 81, and outputs rotational power in a vertical plane, and the third clamping part 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, which is used to drive its 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-holding component is arranged at the rotating part and the non-rotating part of the third bending component. After bending, the third pressure-holding components are respectively located on the upper and lower sides of the bending place of the flexible FPC, and output power in the vertical direction, so as to press the bending place of the flexible FPC from the upper and lower sides for maintaining pressure.

[0048] 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.

[0049] The third clamping component includes a second vertical support plate 88, a third fixed pressure block 89, a third pressing 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 extends horizontally to one side of the second vertical support plate 88, the side edge of the third fixed pressure block 89 is a tooth-shaped structure, and at least two second air-avoiding clamping grooves B are spaced apart along the straight direction; the third pressing cylinder 810 is arranged on one 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 pressing 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, effectively preventing movement interference with the FPC support during the process of clamping the flexible FPC during the second bending.

[0050] 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 is 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.

[0051] 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 support plate, and outputs power in a direction perpendicular to the third support 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 support 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.

[0052] 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 air cylinder 812 through a connecting plate cylinder 85, and the output end is set downward; the third upper pressure-keeping block 815 is connected to the output end of the third upper pressure-keeping cylinder 814; the third lower pressure-keeping cylinder 812 and the third lower pressure-keeping 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-keeping cylinder 812 and the third upper pressure-keeping cylinder 814 respectively output power to drive the third lower pressure-keeping block 813 and the third upper pressure-keeping block 815 to press the bending line of the flexible FPC from below and above, so as to press and pressure the bending parts that overlap up and down after bending. Example 4

[0053] like Figure 10As 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 strip is the bending line. During the bending process, the bent strip 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 strip is perpendicular to the original strip; the flexible FPC strip can be bent at any angle by adjusting the value range of the angle a.

[0054] The embodiments of the present invention are merely to introduce specific implementation methods and are not intended to limit the scope of protection. Persons skilled in the art may make certain modifications inspired by these embodiments. Therefore, any equivalent changes or modifications made in accordance with the scope of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A device for bending a flexible FPC at any angle and maintaining pressure, which is arranged on one side of the FPC support of an automatic flexible FPC bending machine and is used to automatically bend the flexible FPC placed on the FPC support, and is characterized by: 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 respect to the first oblique thrust assembly, is connected to 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 pushing 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. After bending, the first pressure-maintaining component is respectively located on the upper and lower sides of the bending point of the flexible FPC, and outputs power in the vertical direction so as to press the bending point of the flexible FPC from the upper and lower sides to maintain pressure.

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

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

5. The device for bending a flexible FPC at any angle and maintaining pressure 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 of the first movable pressure block (611). 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 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 support plate and outputs power in a direction perpendicular to the first support 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 support 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 assembly 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 set 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 flexible FPC 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 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 a flexible FPC at any angle and maintaining pressure according to any one of claims 1 to 8.

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