Flexible printed circuit (FPC) multi-degree-of-freedom bending mechanism and bending machine thereof

Abstract

The invention discloses a flexible FPC multi-degree-of-freedom bending mechanism and a bending machine thereof, the flexible FPC multi-degree-of-freedom bending mechanism comprises a bending support, a bending transverse moving assembly and a bending head, and the bending support is horizontally arranged on a machine table; the bending transverse moving assembly is arranged on the bending support. The bending head is arranged on the bending transverse moving assembly. The bending head comprises a top inserting part, a bending part and a pressing part, and the bending part is connected to the bending transverse moving assembly. The top inserting part is arranged on one side of the bending part, the top inserting part penetrates through the bending part and extends to the other side of the adsorption part, and a first inserting pin of the top inserting part extends into a bending line; and the pressing part is arranged on the bending part. According to the invention, the contact pin which has the same rotating shaft with the bending is adopted, the belt body is pressed during bending, and a belt body bending rotating shaft is provided, so that the upwarp of the belt body during bending is effectively reduced, the accurate control of the bending radian is realized, the bending position accuracy and the bent belt body flatness are ensured, and meanwhile, the adsorption fixing and belt pressing functions are integrated.

Description

Technical Field

[0001] The invention relates to the field of flexible printed circuit board (FPC) manufacturing equipment, in particular to a flexible FPC multi-degree-of-freedom bending mechanism and a bending machine thereof. Background Art

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

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

[0004] The technical problem to be solved by the present invention is to address the deficiencies of the above-mentioned prior art and provide a method of using a pin with the same rotating axis as the bending to simultaneously realize the compression of the belt body during bending and provide a belt bending rotating axis, which effectively reduces the warping of the belt body during bending and realizes precise control of the bending curvature, thereby ensuring the accuracy of the bending position and the surface flatness of the belt body after bending. At the same time, the adsorption, fixing and belt pressing functions are integrated on the rotating adsorption part, effectively ensuring the position accuracy of the bent part of the belt during the bending rotation process, improving the bending quality, and adapting to the bending of bending lines of different angles on the belt body, with good versatility. Flexible FPC multi-degree-of-freedom bending mechanism and its bending machine.

[0005] The technical solution adopted by the present invention is as follows: a flexible FPC multi-degree-of-freedom bending mechanism is arranged in a flexible FPC bending machine, and is used to bend the flexible FPC, including a bending support, a bending transverse movement component and a bending head, wherein the bending support is horizontally arranged on the machine table and extends along the Y-axis direction; the bending transverse movement component is arranged on the bending support, and outputs linear power along the Y-axis direction for adjusting the bending position; the bending head is arranged on the bending transverse movement component, and is driven by the bending transverse movement component to approach the flexible FPC; the bending head includes a top plug component, a bending component and a pressing component, wherein the bending The component is connected to the bending and transverse movement assembly, and outputs rotational power to drive its adsorption component to rotate, so that after the adsorption component adsorbs and fixes the bending part of the flexible FPC from above, it drives the bending part to rotate 180° along the bending line; the top plug component is arranged on one side of the bending component, and the top plug component extends through the bending component to the other side of the adsorption component, and the first pin of the top plug component extends to the bending line and presses the bending part, and the adsorption component drives the bending part to rotate and bend with the first pin as the rotation center axis; the clamping component is arranged on the bending component, and presses and fixes the bending part on the adsorption component, so as to clamp and fix the bending part when the bending part is bent.

[0006] Preferably, the flexible FPC comprises an FPC belt body and a bending portion, wherein the FPC belt body and the bending portion extend horizontally along the X-axis direction; a bending line is provided between the FPC belt body and the bending portion, and the bending portion turns over along the bending line.

[0007] Preferably, the angle between the bending line A and the X-axis is 45°; foam is provided on the side of the bending line, and the foam is attached to the surface of the FPC belt body and / or the bending part so that the bent FPC belt body and the bending part can be bonded and fixed through the adhesive layer on its surface.

[0008] Preferably, the bending and transverse shifting assembly includes a bending and transverse shifting cylinder, a bending and transverse shifting slide and a first vertical support plate, wherein the bending and transverse shifting cylinder is arranged on the bending support and outputs power along the Y-axis direction; the bending and transverse shifting slide is slidably arranged on the bending and transverse shifting cylinder along the Y-axis direction and is connected to the output end of the bending and transverse shifting cylinder; the first vertical support plate is vertically arranged on the bending and transverse shifting slide.

[0009] Preferably, the bending component includes a first rotating cylinder, a first rotating seat and an adsorption component, wherein the first rotating cylinder is arranged on one side of the first vertical support plate; the first rotating seat is connected to the output end of the first rotating cylinder, and is driven by the first rotating cylinder to rotate in a vertical plane.

[0010] Preferably, the adsorption component is arranged on the first rotating seat, and the adsorption component includes a first adsorption seat and a first suction block; the first adsorption seat is connected to the first rotating seat through a support rod, and is arranged in parallel with the first rotating seat; the first suction block is arranged on the first adsorption seat, an air path is arranged inside the first suction block, and is connected to an external vacuum generator; at least two first suction nozzles are arranged on the surface of the first suction block, and the first suction nozzle is connected to the air path inside the first suction block, so as to generate vacuum negative pressure on the surface of the first suction block to adsorb and fix the bent part.

[0011] Preferably, the clamping component includes a translation cylinder, a translation slide, a first clamping cylinder and a first clamping block, wherein the translation cylinder is arranged in the gap space between the first rotating seat and the first adsorption seat, and is connected to the side wall of the first rotating seat, and the power output direction of the translation cylinder is perpendicular to the extension direction of the bending part; the translation slide is slidably connected to the translation cylinder and is connected to the output end of the translation cylinder.

[0012] Preferably, the first clamping cylinder is arranged on the translation slide in a direction perpendicular to the first rotating seat; the first clamping block is connected to the output end of the first clamping cylinder and extends to the outside of the first suction block, and the first clamping block is driven by the first clamping cylinder to clamp and fix the bending part on the first suction block from the outside.

[0013] Preferably, the top insertion component includes a first cylinder support, a first top insertion cylinder, a first insertion rod and a first insertion pin, wherein the first cylinder support is connected to the other side of the first vertical support plate; the first top insertion cylinder is arranged on the first cylinder support, and the output end extends outward through the first vertical plate and the first rotating cylinder; the first insertion rod is connected to the output end of the first top insertion cylinder; the first insertion pin is detachably connected to the first insertion rod and extends to the outside of the first suction block, and the first insertion pin is coaxial with the rotation center of the first rotating cylinder; the first insertion pin presses the bending part in the opposite direction to the adsorption force of the first suction block and overlaps with the bending line, and the first insertion pin serves as the rotation center axis of the bending part while pressing the bending part in the reverse direction during the bending process.

[0014] A bending machine with a flexible FPC multi-degree-of-freedom bending mechanism.

[0015] 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 method that uses a pin with the same rotating axis as the bending to simultaneously achieve compression of the belt body during bending and provide a belt bending rotating axis, which effectively reduces the warping of the belt body during bending and achieves precise control of the bending curvature, thereby ensuring the accuracy of the bending position and the flatness of the belt surface after bending. At the same time, the rotating adsorption part is integrated with the adsorption fixing and belt pressing functions, effectively ensuring the position accuracy of the bent part of the belt during the bending rotation process, improving the bending quality, and adapting to the bending of bending lines of different angles on the belt body. It has a flexible FPC multi-degree-of-freedom bending mechanism and a bending machine thereof with good versatility.

[0016] The present invention aims to provide a bending mechanism that can adapt to bending lines of different positions or different angles of a flexible FPC (such as a 0° bending line, a 90° bending line, a 45° bending line, etc.), and can be used as a bending actuator for a flexible FPC bending mechanism that is widely used in the field of flexible FPC bending. In the actual manufacturing process, there are various situations in which the bending direction of the flexible FPC may be perpendicular to its side direction or inclined to its side direction. According to the existing bending method, a corresponding adsorption platform needs to be designed to match the contour for different bending directions, which has high manufacturing costs and cannot achieve good bending position accuracy. However, the bending mechanism of the present application only needs to adaptively adjust the installation angle according to the required bending direction of the flexible FPC during the installation process, and the mechanism has high versatility and can effectively reduce the equipment manufacturing cost. At the same time, compared with the traditional bending method, the present invention integrates the functions of rotational bending, rotational adsorption, rotational pressing, auxiliary provision of rotation center and pressing of the unbent belt, etc., and realizes auxiliary pressing at the bending line before bending. The position accuracy of the bent belt is effectively guaranteed by vacuum adsorption and rotational pressing during the bending process. At the same time, the center axis of the belt bending is provided by the pin during the bending process, which effectively guarantees the accuracy and consistency of the bending arc, and greatly improves the bending position accuracy and the bending arc consistency.

[0017] Specifically, the present invention as a whole includes a bending and transverse shifting assembly and a bending head, wherein the bending and transverse shifting assembly is used to output power in a linear direction to drive the bending head to approach or move away from the bending portion of the flexible FPC; the bending head includes a top plug-in component, a bending component and a clamping component, and the bending head is connected to the output end of the bending and transverse shifting assembly through a first vertical support plate, and the first vertical support plate serves as a bearing structure, and a bending component is arranged on one side wall thereof, and a top plug-in component is arranged on the other side wall thereof. During the bending process, the installation direction of the bending and transverse shifting assembly and the first vertical support plate can be flexibly adjusted based on the direction of the bending line to adapt to the bending requirements in the direction of the flexible FPC; the bending component drives the first rotating seat to rotate in the plane where the first vertical support plate is located through the first rotating cylinder, and the first pin of the top plug-in component passes through the first vertical support plate and the first rotating cylinder and extends horizontally to one side of the first vertical support plate, and the first pin is coaxially arranged with the rotation center of the first rotating cylinder, and the first pin maintains a stationary state during the rotation of the first rotating seat. In addition, the first rotating seat of the present invention is connected to the first adsorption seat through a support rod in parallel and at intervals, and an installation gap is left between the first adsorption seat and the first rotating seat. This structural design facilitates the integrated setting of a clamping component, and a first suction block is provided at the bottom of the first adsorption seat. The first suction hole is arranged through a plurality of first suction nozzles at its bottom, which are used to adsorb and fix the bending part from above during the bending process, and drive the bending part to complete the bending action by following the rotation movement of the first rotating seat. The function of the clamping component of the present invention is to assist in clamping the bending part when the bending component adsorbs and fixes the bending part of the flexible FPC, and drives it to rotate during the rotation process; however, because the bottom of the bending part is supported by the FPC support before bending, the clamping component has no gap space to insert into the bottom of the bending part for clamping (there is motion interference with the FPC support), and the clamping component can only be inserted into the bottom of the bending part for clamping after the bending component adsorbs and fixes the bending part and drives the bending part to rotate a certain angle. This requires the clamping component to have a linear position translation function relative to the bending part, and the clamping The tightening component realizes linear power output by driving the translation slide connected thereto through the translation cylinder arranged on the first rotating seat. The translation slide is vertically provided with a first clamping cylinder, which drives the first clamping block of the U-shaped structure to move up and down. When the bending part rotates and separates from the FPC support below, the first clamping block translates to the bottom of the bending part, and clamps the bending part from the outside during the bending rotation process to maintain the position accuracy of the bending part during the rotation and bending process. When the bending is about to be completed, the first clamping block reverses and separates from the bending part to ensure the flatness of the belt after bending. As described above, before bending, the present invention inserts the first pin into the bending line of the flexible FPC and reversely presses the flexible FPC through the first pin to avoid the warping of the bending part caused by the internal stress of the belt body itself during the bending process, thereby ensuring the accuracy of the bending position. At the same time, the first pin also plays the role of the bending center axis. The belt body completes the bending action around the surface of the first pin, thereby realizing precise control of the bending curvature and effectively ensuring the surface flatness and position accuracy of the bent part after bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of Example 1 of the present invention.

[0019] Figure 2 This is the second schematic diagram of the three-dimensional structure of Example 1 of the present invention.

[0020] Figure 3 This is one of the three-dimensional structural schematic diagrams of the bending head according to Example 1 of the present invention.

[0021] Figure 4 This is the second schematic diagram of the three-dimensional structure of the bending head according to Example 1 of the present invention.

[0022] Figure 5 This is the third schematic diagram of the three-dimensional structure of the bending head according to Example 1 of the present invention.

[0023] Figure 6 This is the fourth schematic diagram of the three-dimensional structure of the bending head according to Example 1 of the present invention.

[0024] Figure 7 This is one of the structural schematic diagrams of the flexible FPC in the bending state of the present invention.

[0025] Figure 8 This is the second structural schematic diagram of the flexible FPC in the bending state of the present invention.

[0026] Fig. 9 This is one of the three-dimensional structural schematic diagrams of Example 2 of the present invention.

[0027] Fig.10 This is the second schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0028] Fig.11 This is the third schematic diagram of the three-dimensional structure of Example 2 of the present invention.

[0029] In the figure: 0. Flexible FPC; 01. FPC belt; 02. Bending part; 03. Foam; A. Bending line; 41. Bending support; 42. Bending transverse cylinder; 43. Bending transverse slide; 44. First vertical support plate; 45. First rotating cylinder; 46. First cylinder support; 47. First top inserting cylinder; 48. First inserting rod; 49. First inserting pin; 410. First rotating seat; 411. First adsorption seat; 412. First suction block; 413. First suction nozzle; 414. Translation cylinder; 415. Translation slide; 416. First pressing cylinder; 417. First pressing block; 81. Second vertical support plate; 82. Second rotating cylinder; 83. Second top insertion cylinder; 84. Second insertion rod; 85. Second insertion pin; 86. Second rotating seat; 87. Second adsorption seat; 88. Second suction block; 89. Second clamping cylinder; 810. Second clamping block. DETAILED DESCRIPTION

[0030] 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.

[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, movement status, etc. between the 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 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

[0033] like Figures 1 to 6As shown, the present invention proposes a flexible FPC multi-degree-of-freedom bending mechanism, which is arranged in a flexible FPC bending machine and is used to bend a flexible FPC0, comprising a bending support 41, a bending transverse shift assembly and a bending head, wherein the bending support 41 is horizontally arranged on the machine table and extends along the Y-axis direction; the bending transverse shift assembly is arranged on the bending support 41 and outputs linear power along the Y-axis direction for adjusting the bending position; the bending head is arranged on the bending transverse shift assembly and is driven by the bending transverse shift assembly to approach the flexible FPC0; the bending head comprises a top inserting component, a bending component and a pressing component, wherein the bending component is connected to the bending transverse shift assembly On the component, it outputs rotational power to drive its adsorption component to rotate, so that after the adsorption component adsorbs and fixes the bending part 02 of the flexible FPC0 from above, it drives the bending part 02 to rotate 180° along the bending line A; the top plug component is arranged on one side of the bending component, and the top plug component extends through the bending component to the other side of the adsorption component, and the first pin 49 of the top plug component extends to the bending line A and presses the bending part 02, and the adsorption component drives the bending part 02 to rotate and bend with the first pin 49 as the rotation center axis; the pressing component is arranged on the bending component, and presses and fixes the bending part 02 on the adsorption component, so as to press and fix the bending part 02 when the bending part 02 is bent.

[0034] like Figures 7 and 8 As shown, as an embodiment of the present invention, the flexible FPC0 of the present invention includes an FPC belt body 01 and a bending portion 02, wherein the FPC belt body 01 and the bending portion 02 extend horizontally along the X-axis direction; a bending line A is provided between the FPC belt body 01 and the bending portion 02, and the bending portion 02 is turned and bent along the bending line A. The angle between the bending line A and the X-axis is 45°; a foam 03 is provided on the side of the bending line A, and the foam 03 is attached to the surface of the FPC belt body 01 and / or the bending portion 02, so that the bent FPC belt body 01 and the bending portion 02 are bonded and fixed through the adhesive layer on its surface.

[0035] like Figures 1 to 8 As shown, as an embodiment of the present invention, the bending and transverse shifting assembly of the present invention includes a bending and transverse shifting cylinder 42, a bending and transverse shifting slide 43 and a first vertical support plate 44, wherein the bending and transverse shifting cylinder 42 is arranged on the bending support 41, and outputs power along the Y-axis direction; the bending and transverse shifting slide 43 is slidably arranged on the bending and transverse shifting cylinder 42 along the Y-axis direction, and is connected to the output end of the bending and transverse shifting cylinder 42; the first vertical support plate 44 is vertically arranged on the bending and transverse shifting slide 43.

[0036] The bending component includes a first rotating cylinder 45, a first rotating seat 410 and an adsorption component, wherein the first rotating cylinder 45 is arranged on one side of the first vertical support plate 44; the first rotating seat 410 is connected to the output end of the first rotating cylinder 45, and is driven by the first rotating cylinder 45 to rotate in a vertical plane.

[0037] The adsorption component is arranged on the first rotating seat 410, and the adsorption component includes a first adsorption seat 411 and a first suction block 412; the first adsorption seat 411 is connected to the first rotating seat 410 through a support rod, and is arranged in parallel with the first rotating seat 410; the first suction block 412 is arranged on the first adsorption seat 411, and an air circuit is arranged inside the first suction block 412, and is connected to an external vacuum generator; at least two first suction nozzles 413 are arranged on the surface of the first suction block 412, and the first suction nozzle 413 is connected to the air circuit inside the first suction block 412, so as to generate vacuum negative pressure on the surface of the first suction block 412 to adsorb and fix the bending part 02.

[0038] The clamping component includes a translation cylinder 414, a translation slide 415, a first clamping cylinder 416 and a first clamping block 417, wherein the translation cylinder 414 is arranged in the gap space between the first rotating seat 410 and the first adsorption seat 411, and is connected to the side wall of the first rotating seat 410, and the power output direction of the translation cylinder 414 is perpendicular to the extension direction of the bending part 02; the translation slide 415 is slidably connected to the translation cylinder 414 and is connected to the output end of the translation cylinder 414.

[0039] The first clamping cylinder 416 is arranged on the translation slide 415 in a direction perpendicular to the first rotating seat 410; the first clamping block 417 is connected to the output end of the first clamping cylinder 416 and extends to the outside of the first suction block 412. The first clamping block 417 is driven by the first clamping cylinder 416 to clamp and fix the bending portion 02 on the first suction block 412 from the outside.

[0040] The top plug component includes a first cylinder support 46, a first top plug cylinder 47, a first plug rod 48 and a first plug pin 49, wherein the first cylinder support 46 is connected to the other side of the first vertical support plate 44; the first top plug cylinder 47 is arranged on the first cylinder support 46, and the output end passes through the first vertical plate 44 and the first rotating cylinder 45 to extend outward; the first plug rod 48 is connected to the output end of the first top plug cylinder 47; the first plug pin 49 is detachably connected to the first plug rod 48 and extends to the outside of the first suction block 412, and the first plug pin 49 is coaxial with the rotation center of the first rotating cylinder 45; the first plug pin 49 presses the bending portion 02 in the opposite direction to the adsorption force of the first suction block 412, and overlaps with the bending line A, and the first plug pin 48 serves as the rotation center axis of the bending portion 02 while pressing the bending portion 02 in the reverse direction during the bending process.

[0041] Furthermore, the present invention adopts a pin with the same rotating axis as the bending to simultaneously realize the compression of the belt body during bending and provide a belt bending rotating axis, which effectively reduces the warping of the belt body during bending and realizes precise control of the bending curvature, thereby ensuring the accuracy of the bending position and the surface flatness of the belt body after bending. At the same time, the rotating adsorption part integrates the adsorption fixing and belt pressing functions, effectively ensuring the position accuracy of the bent part of the belt during the bending rotation process, improving the bending quality, and adapting to the bending of bending lines of different angles on the belt body. It has a flexible FPC multi-degree-of-freedom bending mechanism and its bending machine with good versatility. The present invention aims to provide a bending mechanism that can adapt to bending lines of different positions or different angles of a flexible FPC (such as a 0° bending line, a 90° bending line, a 45° bending line, etc.), and can be used as a bending actuator for a flexible FPC bending mechanism that is widely used in the field of flexible FPC bending. In the actual manufacturing process, there are various situations in which the bending direction of the flexible FPC may be perpendicular to its side direction or inclined to its side direction. According to the existing bending method, a corresponding adsorption platform needs to be designed to match the contour for different bending directions, which has high manufacturing costs and cannot achieve good bending position accuracy. However, the bending mechanism of the present application only needs to adaptively adjust the installation angle according to the required bending direction of the flexible FPC during the installation process, and the mechanism has high versatility and can effectively reduce the equipment manufacturing cost. At the same time, compared with the traditional bending method, the present invention integrates the functions of rotational bending, rotational adsorption, rotational pressing, auxiliary provision of rotation center and pressing of the unbent belt, etc., and realizes auxiliary pressing at the bending line before bending. The position accuracy of the bent belt is effectively guaranteed by vacuum adsorption and rotational pressing during the bending process. At the same time, the center axis of the belt bending is provided by the pin during the bending process, which effectively guarantees the accuracy and consistency of the bending arc, and greatly improves the bending position accuracy and the bending arc consistency. Specifically, the present invention as a whole includes a bending and transverse shifting assembly and a bending head, wherein the bending and transverse shifting assembly is used to output power in a linear direction to drive the bending head to approach or move away from the bending portion of the flexible FPC; the bending head includes a top plug-in component, a bending component and a clamping component, and the bending head is connected to the output end of the bending and transverse shifting assembly through a first vertical support plate, and the first vertical support plate serves as a bearing structure, and a bending component is arranged on one side wall thereof, and a top plug-in component is arranged on the other side wall thereof. During the bending process, the installation direction of the bending and transverse shifting assembly and the first vertical support plate can be flexibly adjusted based on the direction of the bending line to adapt to the bending requirements in the direction of the flexible FPC; the bending component drives the first rotating seat to rotate in the plane where the first vertical support plate is located through the first rotating cylinder, and the first pin of the top plug-in component passes through the first vertical support plate and the first rotating cylinder and extends horizontally to one side of the first vertical support plate, and the first pin is coaxially arranged with the rotation center of the first rotating cylinder, and the first pin maintains a stationary state during the rotation of the first rotating seat.In addition, the first rotating seat of the present invention is connected to the first adsorption seat through a support rod in parallel and at intervals, and an installation gap is left between the first adsorption seat and the first rotating seat. This structural design facilitates the integrated setting of a clamping component, and a first suction block is provided at the bottom of the first adsorption seat. The first suction hole is arranged through a plurality of first suction nozzles at its bottom, which are used to adsorb and fix the bending part from above during the bending process, and drive the bending part to complete the bending action by following the rotation movement of the first rotating seat. The function of the clamping component of the present invention is to assist in clamping the bending part when the bending component adsorbs and fixes the bending part of the flexible FPC, and drives it to rotate during the rotation process; however, because the bottom of the bending part is supported by the FPC support before bending, the clamping component has no gap space to insert into the bottom of the bending part for clamping (there is motion interference with the FPC support), and the clamping component can only be inserted into the bottom of the bending part for clamping after the bending component adsorbs and fixes the bending part and drives the bending part to rotate a certain angle. This requires the clamping component to have a linear position translation function relative to the bending part, and the clamping The tightening component realizes linear power output by driving the translation slide connected thereto through the translation cylinder arranged on the first rotating seat. The translation slide is vertically provided with a first clamping cylinder, which drives the first clamping block of the U-shaped structure to move up and down. When the bending part rotates and separates from the FPC support below, the first clamping block translates to the bottom of the bending part, and clamps the bending part from the outside during the bending rotation process to maintain the position accuracy of the bending part during the rotation and bending process. When the bending is about to be completed, the first clamping block reverses and separates from the bending part to ensure the flatness of the belt after bending. As described above, before bending, the present invention inserts the first pin into the bending line of the flexible FPC and reversely presses the flexible FPC through the first pin to avoid the warping of the bending part caused by the internal stress of the belt body itself during the bending process, thereby ensuring the accuracy of the bending position. At the same time, the first pin also plays the role of the bending center axis. The belt body completes the bending action around the surface of the first pin, thereby realizing precise control of the bending curvature and effectively ensuring the surface flatness and position accuracy of the bent part after bending. Example 2

[0042] like Figures 9 to 11As shown in the figure, as an embodiment of the present invention, the fifth bending mechanism 8 of the present invention is used to realize a 45° oblique bend of the third bending portion 07, so that the third bending portion 07 turns and bends 180° along the fifth bending line e, and bends from the initial Y-axis extension direction to the X-axis extension direction, completing the fifth bend; based on the similarity between the fifth bend and the first bend process, the structure of the fifth bending mechanism 8 of the present invention is similar to that of the first bending mechanism 4; specifically, the fifth bending mechanism 8 includes a second vertical support plate 81, a second rotating cylinder 82, and a second The top inserting cylinder 83, the second inserting rod 84, the second inserting pin 85, the second rotating seat 86, the second adsorption seat 87, the second suction block 88, the second pressing cylinder 89 and the second pressing block 810, wherein the second vertical support plate 81 is vertically arranged on the machine table 1, and the angle between the plane where the second vertical support plate is located and the vertical plane where the X-axis is located is 45°; the second rotating cylinder 82 is vertically arranged on one side wall of the second vertical support plate 81, and outputs rotating power in the vertical plane; the second top inserting cylinder 83 is arranged on the other side wall of the second vertical support plate 81, and outputs The output end extends horizontally and perpendicularly to the third vertical plate 81; the second plug rod 84 is connected to the output end of the second plug-in cylinder 83, and extends outward through the second vertical support plate 81 and the second rotating cylinder 82; the second pin 85 is detachably connected to the second plug rod 84 and extends horizontally; the second rotating seat 86 is connected to the output end of the second rotating cylinder 82; the second adsorption seat 87 is connected to the second rotating seat 86, and the bottom of the second adsorption seat 87 is provided with a horizontally extending support portion; the second suction block 88 is horizontally connected to the second On the support part of the adsorption seat 87, at least two third suction nozzles are provided on the second suction block 88 so as to fix the third bending portion 07 by vacuum negative pressure adsorption; the second clamping cylinder 89 is arranged on the second adsorption seat 87, and the output end extends outward vertically through the support part; the second clamping block 810 is connected to the output end of the second clamping cylinder 89. During the bending process, the second clamping block 810 presses the third bending portion 07 adsorbed and fixed on the third suction block 88 from the outside to avoid position displacement during the flipping process and ensure its position accuracy.

[0043] Compared with Example 1, the clamping and air avoidance method of this embodiment is different. In Example 1, the linear power output by the translation cylinder is used to control the first clamping block to extend in or out, so as to realize the clamping and fixation of the bending part. The first clamping block is a U-shaped block structure, which can realize multi-point clamping of the bending part during the clamping process, and is more suitable for bending situations with longer bending parts; while the second clamping block of this embodiment is a strip structure, which realizes single-point clamping of the bending part, and is suitable for bending parts with shorter lengths. Based on the strip structure of the second clamping block, the second clamping cylinder of this embodiment can realize the functional requirements of clamping and air avoidance by driving the second clamping block to rotate, that is, when clamping is required, the second clamping cylinder drives the second clamping block to rotate to the bottom of the bending part, and the second clamping cylinder then drives the second clamping block close to the bending part to realize clamping; when the bending is about to be completed, the second clamping cylinder drives the second clamping block to rotate in the opposite direction to realize separation from the bending part. Example 3

[0044] As an embodiment of the present invention, this embodiment describes a bending machine including a flexible FPC multi-degree-of-freedom bending mechanism.

[0045] The embodiments of the present invention are only to introduce its specific implementation methods and are not intended to limit its protection scope. The technicians in this industry can make some modifications inspired by this embodiment, so any equivalent changes or modifications made according to the scope of the patent of the present invention are within the scope of the patent claims of the present invention.

Claims

1. A flexible FPC multi-degree-of-freedom bending mechanism, arranged in a flexible FPC bending machine, for bending a flexible FPC (0), characterized in that: It comprises a bending support (41), a bending transverse movement component and a bending head, wherein: The bending support (41) is horizontally arranged on the machine platform and extends along the Y-axis direction; the bending transverse movement assembly is arranged on the bending support (41) and outputs linear power along the Y-axis direction for adjusting the bending position; the bending head is arranged on the bending transverse movement assembly and is driven by the bending transverse movement assembly to approach the flexible FPC (0); The bending head comprises a top inserting component, a bending component and a pressing component, wherein the bending component is connected to the bending transverse movement component and outputs a rotational force to drive its adsorption component to rotate, so that after the adsorption component adsorbs and fixes the bending portion (02) of the flexible FPC (0) from above, it drives the bending portion (02) to rotate 180 degrees along the bending line (A); The plug-in top component is arranged on one side of the bending component, and the plug-in top component extends through the bending component to the other side of the adsorption component, and the first plug-in pin (49) of the plug-in top component extends to the bending line (A) and presses the bending part (02), and the adsorption component drives the bending part (02) to rotate and bend with the first plug-in pin (49) as the rotation center axis; The pressing component is arranged on the bending component and presses and fixes the bending portion (02) on the adsorption component, so that when the bending portion (02) is bent, the bending portion (02) is pressed and fixed.

2. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 1, characterized in that: The flexible FPC (0) comprises an FPC belt body (01) and a bending portion (02), wherein the FPC belt body (01) and the bending portion (02) extend horizontally along the X-axis direction; a bending line (A) is provided between the FPC belt body (01) and the bending portion (02), and the bending portion (02) turns over along the bending line (A).

3. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 2, characterized in that: The angle between the bending line (A) and the X-axis is 45°; a foam (03) is provided on the side of the bending line (A), and the foam (03) is attached to the surface of the FPC belt body (01) and / or the bending portion (02), so that the bent FPC belt body (01) and the bending portion (02) are bonded and fixed through the adhesive layer on the surface.

4. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 1, characterized in that: The bending and transverse shifting assembly comprises a bending and transverse shifting cylinder (42), a bending and transverse shifting slide (43) and a first vertical support plate (44), wherein the bending and transverse shifting cylinder (42) is arranged on the bending support (41) and outputs power along the Y-axis direction; the bending and transverse shifting slide (43) is slidably arranged on the bending and transverse shifting cylinder (42) along the Y-axis direction and is connected to the output end of the bending and transverse shifting cylinder (42); the first vertical support plate (44) is vertically arranged on the bending and transverse shifting slide (43).

5. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 4, characterized in that: The bending component comprises a first rotating cylinder (45), a first rotating seat (410) and an adsorption member, wherein the first rotating cylinder (45) is arranged on one side of the first vertical support plate (44); the first rotating seat (410) is connected to the output end of the first rotating cylinder (45) and is driven by the first rotating cylinder (45) to rotate in a vertical plane.

6. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 5, characterized in that: The adsorption component is arranged on the first rotating seat (410), and the adsorption component comprises a first adsorption seat (411) and a first suction block (412); the first adsorption seat (411) is connected to the first rotating seat (410) through a support rod, and is arranged in parallel with the first rotating seat (410) and spaced apart; the first suction block (412) is arranged on the first adsorption seat (411), and an air path is arranged inside the first suction block (412), and is connected to an external vacuum generator; at least two first suction nozzles (413) are arranged on the surface of the first suction block (412), and the first suction nozzles (413) are connected to the air path inside the first suction block (412), so as to generate vacuum negative pressure on the surface of the first suction block (412) to adsorb and fix the bending portion (02).

7. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 6, characterized in that: The clamping component includes a translation cylinder (414), a translation slide (415), a first clamping cylinder (416) and a first clamping block (417), wherein the translation cylinder (414) is arranged in the gap space between the first rotating seat (410) and the first adsorption seat (411), and is connected to the side wall of the first rotating seat (410), and the extension direction of the bending part (02) in the power output direction of the translation cylinder (414) is perpendicular; the translation slide (415) is slidably connected to the translation cylinder (414) and is connected to the output end of the translation cylinder (414).

8. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 7, characterized in that: The first clamping cylinder (416) is arranged on the translation slide (415) along a direction perpendicular to the first rotating seat (410); the first clamping block (417) is connected to the output end of the first clamping cylinder (416) and extends to the outside of the first suction block (412); the first clamping block (417) is driven by the first clamping cylinder (416) to clamp and fix the bending portion (02) on the first suction block (412) from the outside.

9. The flexible FPC multi-degree-of-freedom bending mechanism according to claim 5, characterized in that: The plug-in component comprises a first cylinder support (46), a first plug-in cylinder (47), a first plug-in rod (48) and a first plug-in pin (49), wherein the first cylinder support (46) is connected to the other side of the first vertical support plate (44); the first plug-in cylinder (47) is arranged on the first cylinder support (46), and the output end passes through the first vertical plate (44) and the first rotating cylinder (45) and extends outward; the first plug-in rod (48) is connected to the output end of the first plug-in cylinder (47); The first insertion pin (49) is detachably connected to the first insertion rod (48) and extends to the outside of the first suction block (412). The first insertion pin (49) is coaxial with the rotation center of the first rotating cylinder (45). The first insertion pin (49) presses the bending portion (02) in a direction opposite to the adsorption force of the first suction block (412) and overlaps with the bending line (A). The first insertion pin (48) presses the bending portion (02) in the opposite direction during the bending process and serves as the rotation center axis of the bending portion (02).

10. A bending machine comprising the flexible FPC multi-degree-of-freedom bending mechanism according to any one of claims 1 to 9.

Images