A needle-pressing flexible FPC bending device and its needle-pressing mechanism

Abstract

The present invention discloses a pin-pressing flexible FPC bending device and its pin-pressing mechanism, comprising an FPC support and a bending portion, wherein the FPC support is horizontally arranged, on which the flexible FPC to be bent is placed; the bending portion is arranged on one side of the FPC support, and the bending portion comprises a transverse movement mechanism, a bending mechanism, and a pin-pressing mechanism; the transverse movement mechanism is horizontally arranged; the bending mechanism is arranged on the output end of the transverse movement mechanism, and the bending mechanism is provided with a bearing plane along the Y-axis direction, and the bending mechanism drives the fixed bending portion to bend 180° along the bending line; the pin-pressing mechanism is arranged on the output end of the transverse movement mechanism. The present invention effectively reduces the warping of both sides of the belt body at the bending point during bending, while achieving precise control of the bending curvature, ensuring the accuracy of the bending position and the flatness of the belt body surface after bending, and at the same time integrating adsorption fixation and belt pressing functions during the bending process, avoiding positional offset of the bending portion during the flipping and bending process, and improving the positional accuracy of the bending portion.

Description

Technical Field

[0001] The present invention relates to the field of flexible printed circuit board (FPC) manufacturing equipment, in particular to a pin-pressing type flexible FPC flipping and bending device and a pin-pressing mechanism thereof. 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 and overlap the support strips on 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 on 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. Due to the instability of the vacuum adsorption force, 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. 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 method for simultaneously achieving compression of the belt body during bending and providing a rotation center axis for the belt body during bending, effectively reducing the warping of both sides of the belt body at the bending point during bending, and achieving precise control of the bending curvature, thereby ensuring the accuracy of the bending position and the flatness of the belt body surface after bending. At the same time, the adsorption, fixing and belt pressing functions are integrated during the bending process to avoid positional offset of the bending portion during the bending process, thereby improving the position accuracy of the bending portion, thereby achieving a pressure needle type flexible FPC bending device and its pressure needle mechanism.

[0005] The technical solution adopted by the present invention is as follows: a needle-type flexible FPC flipping and bending device is arranged in an FPC bending machine, comprising an FPC support and a bending part, wherein the FPC support is arranged horizontally, and the flexible FPC to be bent is placed on it; the flexible FPC comprises an FPC strip and a bending part; the FPC strip extends horizontally along the X-axis direction and is supported and fixed by the FPC support; the bending part is connected to one side of the FPC strip along the Y-axis direction, and the bending part is horizontally suspended on the outside of the FPC support and supported by the bending part; a bending line extending along the Y-axis direction is provided on the bending part; the bending part is arranged on one side of the FPC support, and the bending part comprises a transverse movement mechanism, Bending mechanism and pressing needle mechanism; the transverse movement mechanism is arranged horizontally and outputs power along the X-axis direction; the bending mechanism is arranged on the output end of the transverse movement mechanism, and moves linearly through the drive of the transverse movement mechanism. The bending mechanism is provided with a bearing plane along the Y-axis direction, which is used for horizontal bearing, downward adsorption and fixation, and downward pressure to fix the bending part. The bending mechanism drives the fixed bending part to turn 180° along the bending line so that the bending part is superimposed on the FPC belt body; the pressing needle mechanism is arranged on the output end of the transverse movement mechanism and extends horizontally into the bending mechanism along the Y-axis direction until its pressing needle touches the bending line of the flexible FPC, so that when bending, the bending part turns around the pressing needle and the two sides of the bending line are pressed tightly by the pressing needle.

[0006] Preferably, the FPC support includes a main support extending along the X-axis direction and a secondary support extending along the Y-axis direction perpendicular to the main support; the main support and the secondary support are connected to each other to form a T-shaped bearing surface for carrying and adsorbing the flexible FPC; the FPC belt is placed on the main support; the support belt of the flexible FPC is placed on the secondary support; the main support and the secondary support are provided with vacuum suction holes, limit blocks and guide pillars; the vacuum suction holes include at least two, which are used to fix the flexible FPC by downward adsorption through vacuum negative pressure; at least two vacuum suction holes are arranged at intervals along the X-axis direction on the main support; at least two vacuum suction holes are arranged at intervals along the Y-axis direction on the secondary support; the limit blocks include at least two, and at least two limit blocks are arranged on both sides of the vacuum suction hole for limiting and guiding the flexible FPC; the guide pillars include at least two, and at least two guide pillars are arranged between two adjacent vacuum suction holes for upward insertion into the through hole of the flexible FPC so as to guide and limit the flexible FPC.

[0007] Preferably, the transverse movement mechanism includes a bending support, a bending transverse movement slide and a bending transverse movement cylinder, wherein the bending support is horizontally arranged, and a slide rail is provided on the bending support along the X-axis direction; the bending transverse movement slide is slidably arranged on the slide rail; the bending transverse movement cylinder is arranged on the bending support along the X-axis direction, and the output end is connected to the bending transverse movement slide, and drives the bending transverse movement slide to move linearly along the X-axis direction, so that the bending mechanism moves to the bottom of the horizontally suspended bending part.

[0008] Preferably, the bending mechanism includes a rotating component, a bending bearing component and a clamping component, wherein the rotating component is arranged on the bending transverse slide and outputs rotational power in the vertical plane; the bending bearing component is arranged on the rotation output end of the bending component, the bending bearing component carries the bending part, and outputs linear power along the Y-axis direction, which is used to adjust the relative position between the bending part and the bending part before carrying and fixing the bending part; the clamping component is arranged on the bending bearing component, and the clamping component outputs power in the vertical direction, which is used to clamp and fix the bending part from above to avoid position displacement of the bending part during the flipping and bending process.

[0009] Preferably, the rotating assembly includes a vertical support plate, a rotating cylinder and a rotating block, wherein the vertical support plates include two plates, and the two vertical support plates are arranged on the bending transverse slide in parallel and spaced apart along the Y-axis direction, forming a flipping space between the two; the rotating cylinder is arranged on the inner side wall of a vertical support plate, and its output end is located in the flipping space, and outputs rotational power in a vertical plane; the rotating block is connected to the output end of the rotating cylinder and is driven by the rotating cylinder to rotate.

[0010] Preferably, the bending bearing assembly includes a rotating frame, a translation cylinder and an adsorption seat, wherein the rotating frame is a U-shaped bracket structure, one end of the rotating frame is fixedly connected to the rotating block, and the other end of the rotating frame is rotatably connected to another vertical support plate; the translation cylinder is horizontally arranged in the U-shaped opening of the rotating frame, and the output end is arranged in the Y-axis direction; the adsorption seat is slidably arranged on the translation cylinder along the Y-axis direction and connected to the output end of the translation cylinder, and the top surface of the adsorption seat is a horizontal bearing plane for bearing the bending part, and at least two vacuum suction nozzles are provided in the bearing plane, which adsorb and fix the bending part downward by vacuum negative pressure; the clamping assembly is arranged in the U-shaped opening of the rotating frame; the rotating frame is driven by the rotating block to rotate as a whole, so that the bending part completes a 180° flip bend along the bending line.

[0011] Preferably, the clamping assembly includes an air-proof cylinder, an air-proof seat, a clamping cylinder and a pressure block, wherein the air-proof cylinder is arranged in the U-shaped opening of the rotating frame along the X-axis direction, and its output end extends toward the X-axis direction; the air-proof seat is slidably connected to the air-proof cylinder along the X-axis direction, and is connected to the output end of the air-proof seat; the clamping cylinder is vertically arranged on the air-proof seat, and the output end is arranged upward; the pressure block is horizontally connected to the output end of the clamping cylinder, and extends horizontally to form a mountain-shaped clamping plane; the air-proof cylinder drives the pressure block to approach or move away from the adsorption seat along the X-axis direction, so that the adsorption seat carries the bending part to reserve space above, and after the adsorption seat carries the adsorption bending part, it moves to above the bending part, and is driven by the clamping cylinder to clamp and fix the bending part from above.

[0012] Preferably, the needle pressing mechanism includes a needle pressing drive assembly, a connecting assembly and a needle pressing assembly, wherein the needle pressing drive assembly is arranged on the side wall of another vertical support plate, and the output end passes through the vertical support plate and extends along the Y-axis direction; the connecting assembly is sleeved on the output end of the needle pressing drive assembly, the connecting assembly is rotatably connected to the vertical support plate, and is fixedly connected to the other end of the rotating frame, so as to support the rotating frame while enabling a rotatable connection between the rotating frame and the vertical support plate; the needle pressing assembly freely passes through the inside of the connecting assembly along the Y-axis direction, and is connected to the needle pressing drive assembly, and is driven by the needle pressing drive assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line.

[0013] A pressure needle mechanism of a pressure needle type flexible FPC flipping and bending device includes vertical support plates and rotating frames arranged in parallel and at intervals, and also includes a pressure needle drive assembly, a connecting assembly and a pressure needle assembly, wherein the pressure needle drive assembly is arranged on the side wall of the vertical support plate, and the output end passes through the vertical support plate and extends along the Y-axis direction; the connecting assembly is sleeved on the output end of the pressure needle drive assembly, the connecting assembly is rotatably connected to the vertical support plate, and is fixedly connected to the rotating frame on the side of the vertical support plate, so as to support the rotating frame while enabling a rotatable connection between the rotating frame and the vertical support plate; the pressure needle assembly freely passes through the inside of the connecting assembly along the Y-axis direction, and is connected to the pressure needle drive assembly, and is driven by the pressure needle drive assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line of the flexible FPC.

[0014] Preferably, the pressure needle driving assembly includes a pressure needle cylinder; the pressure needle cylinder is arranged on the outer side of the vertical support plate, and the output end is arranged horizontally toward the vertical support plate; the connecting assembly includes a load-bearing bearing, a locking block and a movable sleeve, wherein the load-bearing bearing is arranged in a bearing mounting hole opened in the vertical support plate and is fixedly connected to the vertical support plate through the locking block; one end of the movable sleeve is inserted in the load-bearing bearing and fixedly connected to the inner ring of the load-bearing bearing, and is rotatably connected to the vertical support plate through the load-bearing bearing; the other end of the movable sleeve is fixedly connected to the rotating frame; the pressure needle assembly includes a connecting guide sleeve, a transmission shaft and a pressure needle part, wherein the connecting guide sleeve is inserted and fixed in the rotating frame; one end of the transmission shaft is connected and fixed to the output end of the pressure needle cylinder, and the other end freely passes through the locking block, the load-bearing bearing, the movable sleeve and the connecting guide sleeve in sequence and extends to the outside of the connecting guide sleeve; the pressure needle part is detachably connected to the other end of the transmission shaft, and the pressure needle cylinder drives the pressure needle part to move linearly through the transmission shaft to approach or move away from the bending line of the flexible FPC.

[0015] Preferably, the transmission shaft includes a shaft body and a connector, wherein one end of the shaft body is connected and fixed to the output end of the pressure needle cylinder; the connector is arranged on the other end face of the shaft body, its outer diameter is smaller than the outer diameter of the shaft body, and the surface is provided with a thread; the pressure needle part includes a pressure needle seat and a pressure needle, wherein a connecting hole is provided on one end wall of the pressure needle seat, and a thread is provided on the inner wall of the connecting hole, so that the connector can be rotated and screwed into the connecting hole and fixed by a threaded connection; the pressure needle is arranged at the other end of the pressure needle seat and extends outward; a first locking hole is also provided on the side wall of the pressure needle seat, and the first locking hole extends in a radial direction and is connected with the connecting hole, so that after the connector is inserted into the connecting hole, the connector is fixed by an external plug pin.

[0016] The beneficial effects of the present invention are:

[0017] In response to the defects and shortcomings of the existing technology, the present invention independently developed and designed a device that can simultaneously achieve compression of the belt body during bending and provide a rotation center axis for the belt body during bending. While effectively reducing the warping of both sides of the belt body at the bending point during bending, it achieves precise control of the bending curvature, ensuring the accuracy of the bending position and the flatness of the belt body surface after bending. At the same time, it integrates adsorption, fixing and belt pressing functions during the bending process, avoiding position offset of the bending part during the bending process, and improving the position accuracy of the bending part, thereby achieving a pressure needle type flexible FPC bending device and its pressure needle mechanism.

[0018] The present invention is the core part of the flexible FPC automatic bending machine, which mainly realizes the load-bearing and automatic bending of the flexible FPC during bending. The present invention as a whole includes an FPC support and a bending part. The flexible FPC to be bent is placed on the FPC support and supported by the FPC support. The bending part to be turned over and bent is horizontally suspended outside the FPC support. The bending part set on the side of the FPC support first moves to the bottom of the bending part, supports the bending part, and then fixes the bending part by vacuum adsorption and downward pressure, which drives the bending part to turn 180 degrees as a whole to achieve automatic bending. The special features are:

[0019] 1. In order to ensure the position accuracy during the placement of the flexible FPC, the FPC support of the present invention adopts multiple limit blocks to form a placement channel, and uses the limit blocks as a positioning reference to guide and position the flexible FPC belt in the Y-axis direction. At the same time, multiple guide pillars are set in the placement channel. During the placement process, positioning in the X-axis and Y-axis directions is achieved by aligning the through holes on the flexible FPC with the guide pillars; after the flexible FPC is placed and positioned, the vacuum negative pressure generated by the multiple vacuum suction holes set in the placement channel is sucked downward and fixed to ensure its position accuracy.

[0020] 2. The bending part of the present invention includes a transverse movement mechanism, which provides a linear output power along the X-axis direction to realize the bending mechanism and the needle pressing mechanism being synchronously driven to the bottom of the bending part before bending, so that the bending mechanism can carry the horizontally suspended bending part from the bottom.

[0021] 3. The bending part of the present invention includes a bending mechanism, the rotating assembly of the bending mechanism is arranged on the transverse movement mechanism, and two vertical support plates arranged in parallel and spaced apart along the Y-axis direction are used as the bearing body. The space between the two vertical support plates is the flipping space. A rotating cylinder is set on the side wall of one vertical support plate. The rotating cylinder drives the rotating block to rotate in the vertical plane to serve as the rotating power during bending and flipping; the bending bearing assembly of the bending mechanism is connected to the rotating block with a rotating frame of a U-shaped frame structure, and a translation cylinder is set in the rotating frame to output power along the Y-axis direction, so as to adjust the position of the adsorption seat thereon before bending so that it is aligned with the bending position. The adsorption seat carries the horizontally suspended bending part and fixes the bending part through vacuum negative pressure adsorption; at the same time, the pressure block arranged on the rotating frame presses the bending part on the adsorption seat from above, which ensures that when the bending part is turned upside down during the bending process, it will not be partially separated from the adsorption seat due to its own gravity, effectively reducing the position offset and improving the bending position accuracy; in addition, the pressure block is driven by the air-proof cylinder to move in the X-axis direction, and can retreat to the outside of the adsorption seat before bending so that the adsorption seat can carry the bending part. After the loading is completed, it moves to the top of the adsorption seat and presses the bent part downward under the drive of the clamping cylinder.

[0022] 4. The bending part of the present invention also includes a pressing needle mechanism, which is arranged as a whole on another vertical support plate. Its function is to first insert the pressing needle to the position to be bent, that is, the bending line, before bending, and press the bending line in advance by the pressing needle, so that the belt body on both sides of the bending line is in a compressed state during the bending process, avoiding local warping during the bending process caused by the internal stress of the flexible FPC; at the same time, the pressing needle also serves as the rotation center axis during the bending process, which can effectively control the bending angle, and accurately control the bending arc while maintaining the straightness of the bending line, so that the spacing between the upper and lower layers after flipping 180° and bending is uniform.

[0023] 5. Furthermore, based on the need for the pressure needle mechanism to cooperate with the bending mechanism to complete the automatic bending of the flexible FPC, the bending mechanism drives the bending part to rotate 180° for the bending process, and the pressure needle of the pressure needle mechanism needs to maintain a stationary state; at the same time, it is also necessary to solve the problem that the pressure needle of the pressure needle mechanism is inserted and pulled back and forth along the Y-axis direction to automatically assist the flexible FPC to bend one by one, so it is necessary to solve the motion interference problem between the rotational motion of the bending mechanism and the linear motion of the pressure needle mechanism; the pressure needle mechanism of the present invention uses a load-bearing bearing and a movable sleeve as a connecting structure, and the load-bearing bearing is used to be fixedly set on another vertical plate. One end of the movable sleeve is inserted and fixed in the load-bearing bearing, and the other end is fixed to the other end of the rotating frame. Through this structural design, the support of the other end of the rotating frame is achieved, and it is also rotatably connected to the vertical support plate; at the same time, the movable sleeve adopts a hollow design, and the outer diameter of the transmission shaft connected to the output end of the pressure needle cylinder is smaller than the inner diameter of the movable sleeve, so that it can pass freely in the movable sleeve along the Y-axis direction, avoiding motion interference when the pressure needle mechanism moves back and forth linearly.

[0024] 6. Furthermore, based on the fact that different flexible FPCs have different bending radians required during bending in the actual production process, the press needle parts of the press needle mechanism of the present invention adopt a detachable installation method; specifically, a connector with a threaded structure is provided at the end of the transmission shaft, and the press needle part is designed to have a structure with a press needle seat, and a connecting hole is provided at the end of the press needle seat. The press needle part and the transmission shaft can be efficiently installed by rotating and twisting the connector and the connecting hole. At the same time, in order to ensure the connection stability, a first locking hole is provided on the side wall of the press needle seat of the present invention in a radial direction. By inserting a pin from the outside into the press needle seat, the installed connector and the press needle seat can be further fixed, thereby ensuring their installation accuracy and avoiding the situation where the press needle is subjected to the force of the flexible FPC during the bending process and rotates to affect the bending accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is one of the three-dimensional structural diagrams of the present invention.

[0026] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0027] Figure 3 This is the third schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the FPC support and the supporting product of the present invention.

[0029] Figure 5 This is one of the three-dimensional structural schematic diagrams of the FPC support of the present invention.

[0030] Figure 6 This is the second schematic diagram of the three-dimensional structure of the FPC support of the present invention.

[0031] Figure 7 This is one of the three-dimensional structural schematic diagrams of the bending part of the present invention.

[0032] Figure 8 This is the second schematic diagram of the three-dimensional structure of the bending part of the present invention.

[0033] Figure 9 This is the third schematic diagram of the three-dimensional structure of the bending part of the present invention.

[0034] Figure 10 This is one of the schematic diagrams of the disassembled structure of the needle pressing mechanism of the present invention.

[0035] Figure 11 This is the second schematic diagram of the disassembled structure of the needle pressing mechanism of the present invention.

[0036] Figure 12 This is one of the three-dimensional structural schematic diagrams of the needle pressing mechanism of the present invention.

[0037] Figure 13 This is the second schematic diagram of the three-dimensional structure of the needle pressing mechanism of the present invention.

[0038] Figure 14 This is one of the schematic diagrams of the disassembled structure of the needle pressing assembly of the present invention.

[0039] Figure 15 This is the second schematic diagram of the disassembled structure of the needle pressing assembly of the present invention.

[0040] Figure 16 It is a schematic diagram of the three-dimensional structure of the needle pressing assembly of the present invention.

[0041] Figure 17 This is one of the schematic diagrams of the disassembled structure of the needle pressing assembly of Example 2 of the present invention.

[0042] Figure 18 This is the second schematic diagram of the component disassembly structure of the pressure needle assembly of Example 2 of the present invention.

[0043] Figure 19This is one of the three-dimensional structural schematic diagrams of the needle pressing mechanism in Example 3 of the present invention.

[0044] Figure 20 This is the second schematic diagram of the three-dimensional structure of the needle pressing mechanism in embodiment 3 of the present invention.

[0045] In the picture:

[0046] 0. Flexible FPC; 01. FPC strip; 02. Bending part; A. Bending line;

[0047] 2. FPC support; 21. Main support; 22. Auxiliary support; 23. Vacuum suction hole; 24. Limit block; 25. Guide column;

[0048] 5. Bending part;

[0049] 51. Bending support; 52. Bending and traversing slide; 53. Bending and traversing cylinder;

[0050] 54. Needle pressing mechanism; 55. Bending mechanism;

[0051] 541, needle cylinder; 542, load-bearing bearing; 543, locking block; 544, movable sleeve;

[0052] 545, connecting guide sleeve; 546, transmission shaft; 547, needle pressing part;

[0053] 5461, shaft; 5462, connector; B, connecting hole; C, first locking hole; 5471, press needle seat; 5472, press needle; D, second locking hole; E, jack;

[0054] 548, bearing seat; F, mounting slot; G, fixing slot;

[0055] 551, vertical support plate; 552, rotary cylinder; 553, rotary block;

[0056] 554, rotating frame; 555, translation cylinder; 556, adsorption seat;

[0057] 557. Air-proof cylinder; 558. Air-proof seat; 559. Pressing cylinder; 5510. Pressing block. DETAILED DESCRIPTION

[0058] 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.

[0059] 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.

[0060] 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

[0061] like Figures 1 to 3 As shown, the present invention proposes a pressure needle type flexible FPC flipping and bending device, which is arranged in an FPC bending machine, including an FPC support 2 and a bending part 5, wherein the FPC support 2 is horizontally arranged, and the flexible FPC0 to be bent is placed on it; the flexible FPC0 includes an FPC strip 01 and a bending part 02; the FPC strip 01 extends horizontally along the X-axis direction and is supported and fixed by the FPC support 2; the bending part 02 is connected to one side of the FPC strip 01 along the Y-axis direction, and the bending part 02 is horizontally suspended on the outside of the FPC support 2 and supported by the bending part 5; a bending line A extending along the Y-axis direction is provided on the bending part 02; the bending part 5 is arranged on one side of the FPC support 2, and the bending part 5 includes a transverse movement mechanism, a bending mechanism 55 and a pressing needle mechanism 54; the transverse movement mechanism is horizontally arranged and outputs power along the X-axis direction; the bending mechanism 55 is arranged on the output end of the transverse movement mechanism, and is driven by the transverse movement mechanism to move linearly. The bending mechanism 55 is provided with a bearing plane along the Y-axis direction, which is used for horizontal bearing, downward adsorption and fixation, and downward pressure to fix the bending portion 02. The bending mechanism 55 drives the fixed bending portion 02 to turn 180° along the bending line A, so that the bending portion 02 is superimposed on the FPC belt body 01; the pressing needle mechanism 54 is arranged on the output end of the transverse movement mechanism and extends horizontally into the bending mechanism 55 along the Y-axis direction until its pressing needle touches the bending line A of the flexible FPC0, so that when bending, the bending portion 02 turns around the pressing needle and presses the two sides of the bending line A tightly by the pressing needle.

[0062] The present invention designs a device that can simultaneously achieve compression of the belt body during bending and provide a rotation center axis for the belt body during bending, effectively reducing the warping of both sides of the belt body at the bending point during bending, and realizing precise control of the bending curvature, thereby ensuring the accuracy of the bending position and the flatness of the belt body surface after bending. At the same time, the present invention integrates adsorption, fixing and belt pressing functions during the bending process, thereby avoiding positional deviation of the bending portion during the bending process, and improving the position accuracy of the bending portion. The device and its pressing mechanism of the pressure needle type flexible FPC flipping and bending device are provided. The present invention belongs to the core part of the flexible FPC automatic bending machine, which mainly realizes the load-bearing and automatic bending of the flexible FPC during bending; the present invention as a whole comprises an FPC support and a bending part, the flexible FPC to be bent is placed on the FPC support, supported by the FPC support, and the bent part to be turned over and bent is horizontally suspended outside the FPC support; the bending part arranged on the side of the FPC support first moves to the bottom of the bending part, supports the bending part, and then fixes the bending part by vacuum adsorption and downward pressure, thereby driving the bending part to turn 180 degrees as a whole to realize automatic bending.

[0063] like Figures 4 to 6 As shown, as an embodiment of the present invention, the FPC support 2 of the present invention includes a main support 21 extending along the X-axis direction and a sub-support 22 extending along the Y-axis direction perpendicular to the main support; the main support 21 and the sub-support 22 are connected to each other to form a T-shaped bearing surface for carrying and adsorbing the flexible FPC0; the FPC belt 01 is placed on the main support 21; the support belt of the flexible FPC0 is placed on the sub-support 22; the main support 21 and the sub-support 22 are provided with vacuum holes 23, limit blocks 24 and guide pillars 25; the vacuum holes 23 include at least two, through The vacuum negative pressure sucks the flexible FPC0 downward and fixes it; at least two vacuum suction holes 23 are arranged at intervals along the X-axis direction on the main support 21; at least two vacuum suction holes 23 are arranged at intervals along the Y-axis direction on the auxiliary support 22; the limit block 24 includes at least two pieces, and at least two limit blocks 24 are arranged on both sides of the vacuum suction hole 23, which are used to limit and guide the flexible FPC0; the guide column 25 includes at least two, and at least two guide columns 25 are arranged between two adjacent vacuum suction holes 23, which are used to insert upward into the through hole of the flexible FPC0 to guide and limit the flexible FPC0.

[0064] In order to ensure the position accuracy during the placement of the flexible FPC, the FPC support of the present invention adopts multiple limit blocks to form a placement channel, and uses the limit blocks as a positioning reference to guide and position the flexible FPC belt body in the Y-axis direction. At the same time, multiple guide pillars are set in the placement channel. During the placement process, positioning in the X-axis and Y-axis directions is achieved by aligning the through holes on the flexible FPC with the guide pillars; after the flexible FPC is placed and positioned, it is adsorbed and fixed downward by the vacuum negative pressure generated by the multiple vacuum suction holes set in the placement channel to ensure its position accuracy.

[0065] like Figure 7 As shown, as an embodiment of the present invention, the transverse movement mechanism of the present invention includes a bending support 51, a bending transverse movement slide 52 and a bending transverse movement cylinder 53, wherein the bending support 51 is horizontally arranged, and a slide rail is provided on the bending support 51 along the X-axis direction; the bending transverse movement slide 52 is slidably arranged on the slide rail; the bending transverse movement cylinder 53 is arranged on the bending support 51 along the X-axis direction, and the output end is connected to the bending transverse movement slide 52, and drives the bending transverse movement slide 52 to move linearly along the X-axis direction, so that the bending mechanism 55 is moved to the bottom of the horizontally suspended bending part 02.

[0066] The present invention provides a linear output power along the X-axis direction through a transverse movement mechanism to synchronously drive the bending mechanism and the needle pressing mechanism to the bottom of the bending part before bending, so that the bending mechanism can support the horizontally suspended bending part from below.

[0067] like Figures 8 and 9 As shown, as an embodiment of the present invention, the bending mechanism 55 of the present invention includes a rotating component, a bending bearing component and a clamping component, wherein the rotating component is arranged on the bending transverse slide 52, and outputs rotational power in the vertical plane; the bending bearing component is arranged on the rotation output end of the bending component, and the bending bearing component carries the bending part 02, and outputs linear power along the Y-axis direction, which is used to adjust the relative position between the bending part 02 and the bending part 02 before carrying and fixing the bending part 02; the clamping component is arranged on the bending bearing component, and the clamping component outputs power in the vertical direction, which is used to clamp and fix the bending part 02 from above to avoid position displacement of the bending part 02 during the flipping and bending process.

[0068] The rotating assembly includes a vertical support plate 551, a rotating cylinder 552 and a rotating block 553, wherein the vertical support plate 551 includes two pieces, and the two vertical support plates 551 are arranged on the bending transverse slide 52 in parallel and spaced apart along the Y-axis direction, forming a turning space between the two; the rotating cylinder 552 is arranged on the inner side wall of a vertical support plate 551, and its output end is located in the turning space, and outputs rotational power in the vertical plane; the rotating block 553 is connected to the output end of the rotating cylinder 552, and is driven by the rotating cylinder 552 to rotate.

[0069] The bending bearing assembly includes a rotating frame 554, a translation cylinder 555 and an adsorption seat 556, wherein the rotating frame 554 is a U-shaped bracket structure, one end of the rotating frame 554 is fixedly connected to the rotating block 553, and the other end of the rotating frame 554 is rotatably connected to another vertical support plate 551; the translation cylinder 555 is horizontally arranged in the U-shaped opening of the rotating frame 554, and the output end is arranged in the Y-axis direction; the adsorption seat 556 is slidably arranged on the translation cylinder 555 along the Y-axis direction and is connected to the output end of the translation cylinder 555, the top surface of the adsorption seat 556 is a horizontal bearing plane for carrying the bending part 02, and at least two vacuum suction nozzles are provided in the bearing plane, which adsorb and fix the bending part 02 downward by vacuum negative pressure; the clamping assembly is arranged in the U-shaped opening of the rotating frame 554; the rotating frame 554 is driven by the rotating block 553 to rotate as a whole, so that the bending part 02 completes a 180° flip bend along the bending line A.

[0070] The pressing assembly includes an air-proof cylinder 557, an air-proof seat 558, a pressing cylinder 559 and a pressing block 5510, wherein the air-proof cylinder 557 is arranged in the U-shaped opening of the rotating frame 554 along the X-axis direction, and its output end extends toward the X-axis direction; the air-proof seat 558 is slidably connected to the air-proof cylinder 557 along the X-axis direction and is connected to the output end of the air-proof seat 558; the pressing cylinder 559 is vertically arranged on the air-proof seat 558, and the output end is arranged upward. ; The pressing block 5510 is horizontally connected to the output end of the pressing cylinder 559, and extends horizontally to form a mountain-shaped pressing plane; the air-proof cylinder 557 drives the pressing block 5510 to approach or move away from the adsorption seat 556 along the X-axis direction, so that the adsorption seat 556 carries the bending part 02 to reserve space above, and after the adsorption seat 556 carries the adsorbed bending part 02, it moves to the top of the bending part 02, and is driven by the pressing cylinder 559 to press and fix the bending part 02 from above.

[0071] The rotating assembly of the bending mechanism of the present invention is arranged on the transverse movement mechanism, and two vertical support plates arranged in parallel and spaced apart along the Y-axis direction are used as the bearing body, and the space between the two vertical support plates is the turning space. A rotating cylinder is provided on the side wall of one vertical support plate, and the rotating cylinder drives the rotating block to rotate in the vertical plane to serve as the rotating power during bending and turning; the bending bearing assembly of the bending mechanism is connected to the rotating block with a rotating frame of a U-shaped frame structure, and a translation cylinder is provided in the rotating frame for outputting power along the Y-axis direction, so as to adjust the position of the adsorption seat thereon before bending so that it is aligned with the bending part, and the adsorption seat bearing The bending part is suspended horizontally and fixed by vacuum negative pressure; at the same time, the pressure block arranged on the rotating frame presses the bending part on the fixed adsorption seat from above, which ensures that when the bending part is turned upside down during the bending process, it will not be partially separated from the adsorption seat due to its own gravity, effectively reducing the position offset and improving the bending position accuracy; in addition, the pressure block is driven by the air-proof cylinder to move in the X-axis direction, and can retreat to the outside of the adsorption seat before bending so that the adsorption seat can carry the bending part. After the loading is completed, it moves to the top of the adsorption seat and presses the fixed bending part downward under the drive of the clamping cylinder.

[0072] like Figures 11 to 13 As shown, as an embodiment of the present invention, the needle pressing mechanism 54 of the present invention includes a needle pressing drive assembly, a connecting assembly and a needle pressing assembly, wherein the needle pressing drive assembly is arranged on the side wall of another vertical support plate 551, and the output end passes through the vertical support plate 551 and extends along the Y-axis direction; the connecting assembly is sleeved on the output end of the needle pressing drive assembly, the connecting assembly is rotatably connected to the vertical support plate 551, and is fixedly connected to the other end of the rotating frame 554, so as to support the rotating frame 554 while making the rotating frame 554 and the vertical support plate 551 rotatable; the needle pressing assembly freely passes through the inside of the connecting assembly along the Y-axis direction, and is connected to the needle pressing drive assembly, and is driven by the needle pressing drive assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line A.

[0073] like Figures 11 to 13As shown, as an embodiment of the present invention, the present invention discloses a pressure needle mechanism of a pressure needle type flexible FPC bending device, comprising vertical support plates 551 and a rotating frame 554 arranged in parallel and spaced apart, and also comprising a pressure needle driving assembly, a connecting assembly and a pressure needle assembly, wherein the pressure needle driving assembly is arranged on the side wall of the vertical support plate 551, and the output end passes through the vertical support plate 551 and extends along the Y-axis direction; the connecting assembly is sleeved on the output end of the pressure needle driving assembly, the connecting assembly is rotatably connected to the vertical support plate 551, and is fixedly connected to the rotating frame 554 on the side of the vertical support plate 551, so as to support the rotating frame 554 while making the rotating frame 554 and the vertical support plate 551 rotatable. The pressure needle assembly freely passes through the inside of the connecting assembly along the Y-axis direction and is connected to the pressure needle driving assembly, and is driven by the pressure needle driving assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line of the flexible FPC.

[0074] The pressure needle drive assembly includes a pressure needle cylinder 541; the pressure needle cylinder 541 is arranged on the outside of the vertical support plate 551, and the output end is arranged horizontally toward the vertical support plate 551; the connecting assembly includes a load-bearing bearing 542, a locking block 543 and a movable sleeve 544, wherein the load-bearing bearing 542 is arranged in a bearing mounting hole opened on the vertical support plate 551, and is fixedly connected to the vertical support plate 551 through the locking block 543; one end of the movable sleeve 544 is inserted into the load-bearing bearing 542 and fixedly connected to the inner ring of the load-bearing bearing 542, and is rotatably connected to the vertical support plate 551 through the load-bearing bearing 542; the other end of the movable sleeve 544 is fixedly connected On the rotating frame 554; the press needle assembly includes a connecting guide sleeve 545, a transmission shaft 546 and a press needle piece 547, wherein the connecting guide sleeve 545 is inserted and fixed in the rotating frame 554; one end of the transmission shaft 546 is connected and fixed to the output end of the press needle cylinder 541, and the other end freely passes through the locking block 543, the load-bearing bearing 542, the movable sleeve 544 and the connecting guide sleeve 545 in sequence and extends to the outside of the connecting guide sleeve 545; the press needle piece 547 is detachably connected to the other end of the transmission shaft 546, and the press needle cylinder 541 drives the press needle piece 547 to move linearly through the transmission shaft 546 to approach or move away from the bending line of the flexible FPC.

[0075] The pressing needle mechanism of the present invention is arranged as a whole on another vertical support plate. Its function is to first extend the pressing needle to the position to be bent, that is, the bending line, before bending, and press the bending line in advance by the pressing needle, so that the belt bodies on both sides of the bending line are in a compressed state during the bending process, avoiding local warping during the bending process caused by the internal stress of the flexible FPC; at the same time, the pressing needle also serves as the rotation center axis during the bending process, which can effectively control the bending angle, and accurately control the bending arc while maintaining the straightness of the bending line, so that the spacing between the upper and lower layers after flipping 180° and bending is uniform. Based on the need for the needle pressing mechanism to cooperate with the bending mechanism to complete the automatic bending of the flexible FPC, the bending mechanism drives the bending part to rotate 180° during the bending process, and the needle of the needle pressing mechanism needs to maintain a stationary state; at the same time, it is also necessary to solve the problem of the needle pressing mechanism's needle being inserted and pulled back and forth along the Y-axis direction to automatically assist the flexible FPC to bend one by one, so it is necessary to solve the problem of motion interference between the rotational motion of the bending mechanism and the linear motion of the needle pressing mechanism; the needle pressing mechanism of the present invention uses a load-bearing bearing and a movable sleeve as a connecting structure, and the load-bearing bearing is used to be fixed on another vertical plate, one end of the movable sleeve is inserted and fixed in the load-bearing bearing, and the other end is fixed to the other end of the rotating frame. Through this structural design, support for the other end of the rotating frame is achieved, and it is also rotatably connected to the vertical support plate; at the same time, the movable sleeve adopts a hollow design, and the outer diameter of the transmission shaft connected to the output end of the needle pressing cylinder is smaller than the inner diameter of the movable sleeve, so that it can pass freely in the movable sleeve along the Y-axis direction, avoiding motion interference when the needle pressing mechanism moves back and forth linearly.

[0076] like Figures 14 to 16 As shown, as an embodiment of the present invention, the transmission shaft 546 of the present invention includes a shaft body 5461 and a connector 5462, wherein one end of the shaft body 5461 is connected and fixed to the output end of the pressure needle cylinder 541; the connector 5462 is arranged on the other end face of the shaft body 5461, and its outer diameter is smaller than the outer diameter of the shaft body 5461, and the surface is provided with a thread; the pressure needle part 547 includes a pressure needle seat 5471 and a pressure needle 5472, wherein a connecting hole B is provided on one end wall of the pressure needle seat 5471, and the inner wall of the connecting hole B is provided with a thread, so that the connector 5462 can be rotated and screwed into the connecting hole B and fixed by a threaded connection; the pressure needle 5472 is arranged at the other end of the pressure needle seat 5471 and extends outward; a first locking hole C is also provided on the side wall of the pressure needle seat 5471, and the first locking hole C extends in a radial direction and is connected with the connecting hole B, so that after the connector 5462 is inserted into the connecting hole B, the connector 5462 is fixed by an external pin.

[0077] Based on the fact that different flexible FPCs require different bending radians during bending in the actual production process, the press needle parts of the press needle mechanism of the present invention adopt a detachable installation method; specifically, a connector with a threaded structure is provided at the end of the transmission shaft, and the press needle part is designed to have a structure with a press needle seat, and a connecting hole is provided at the end of the press needle seat. The press needle part and the transmission shaft can be efficiently installed by rotating and twisting the connector and the connecting hole. At the same time, in order to ensure the connection stability, a first locking hole is opened in the radial direction on the side wall of the press needle seat of the present invention. By inserting a pin from the outside into the press needle seat, the installed connector and the press needle seat can be further fixed, thereby ensuring their installation accuracy and avoiding the situation where the press needle is subjected to the force of the flexible FPC during the bending process and rotates to affect the bending accuracy. Example 2

[0078] like Figures 17 and 18 As shown, as an embodiment of the present invention, the connection method between the pressure needle piece 547 and the transmission shaft 546 of this embodiment is different from that of Example 1. The end of the transmission shaft 546 of this embodiment is provided with a socket E, and a plurality of second locking holes D are provided on the side wall of the transmission shaft 546. The second locking holes D extend in the radial direction and are connected to the socket E. The difference from Example 1 is that the pressure needle piece 547 of this embodiment is a needle-shaped structure with the same outer diameter, one end of which is inserted into the socket E, and at the same time, a plurality of pins are inserted into the second locking holes D from the outside, and the pressure needle piece 547 inserted into the socket E is fixed by the pins. Example 3

[0079] like Figures 19 to 20 As shown, as an embodiment of the present invention, the needle pressing mechanism of this embodiment includes a needle pressing cylinder 541, a supporting seat 548 and a needle pressing piece 547, wherein the needle pressing cylinder 541 is horizontally arranged, and the supporting seat 548 is vertically connected to its output end, and drives the supporting seat 548 to move linearly in the direction of the bending line; a strip-shaped mounting groove F is provided on the side wall of the supporting seat 548, and a fixing groove G is provided in the mounting groove F that passes through the side wall of the supporting seat 548; the needle pressing piece 547 includes a needle pressing seat 5471 and a needle pressing 5472, and a mounting hole is provided on one end wall of the needle pressing seat 5471, and the needle pressing 5472 is connected to the other end wall of the needle pressing seat 5471. During the assembly process, the needle pressing seat 5471 can be slid into the mounting groove F, and after the mounting hole of the needle pressing seat 5471 is aligned with the fixing groove G, the needle pressing seat 5471 is locked and fixed to the supporting seat 548 by an externally inserted screw.

[0080] 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 pin-type flexible FPC bending device, arranged in an FPC bending machine, characterized in that: It includes an FPC support (2) and a bending portion (5), wherein: The FPC support (2) is arranged horizontally, and the flexible FPC (0) to be bent is placed on it; The flexible FPC (0) comprises an FPC belt (01) and a bending portion (02); the FPC belt (01) extends horizontally along the X-axis direction and is supported and fixed by an FPC support (2); the bending portion (02) is connected to one side of the FPC belt (01) along the Y-axis direction, and the bending portion (02) is horizontally suspended outside the FPC support (2) and supported by a bending portion (5); a bending line (A) extending along the Y-axis direction is provided on the bending portion (02); The bending portion (5) is arranged on one side of the FPC support (2), and the bending portion (5) includes a transverse movement mechanism, a bending mechanism (55) and a needle pressing mechanism (54); the transverse movement mechanism is arranged horizontally and outputs power along the X-axis direction; The bending mechanism (55) is arranged on the output end of the transverse movement mechanism and is driven by the transverse movement mechanism to move linearly. The bending mechanism (55) is provided with a bearing plane along the Y-axis direction for horizontally bearing, downwardly adsorbing and fixing the bending portion (02), and pressing and fixing the bending portion (02). The bending mechanism (55) drives the fixed bending portion (02) to turn 180 degrees along the bending line (A), so that the bending portion (02) is superimposed on the FPC belt body (01); The pressing needle mechanism (54) is arranged on the output end of the transverse movement mechanism and extends horizontally into the bending mechanism (55) along the Y-axis direction until the pressing needle (5472) thereof abuts against the bending line (A) of the flexible FPC (0), so that when bending, the bending portion (02) turns around the pressing needle (5472) and presses both sides of the bending line (A) by the pressing needle (5472); The FPC support (2) comprises a main support (21) extending in the X-axis direction and a sub-support (22) extending perpendicular to the main support in the Y-axis direction; the main support (21) and the sub-support (22) are connected to each other to form a T-shaped bearing surface for carrying and adsorbing the flexible FPC (0); the FPC belt (01) is placed on the main support (21); the support belt of the flexible FPC (0) is placed on the sub-support (22); vacuum suction holes (23), limit blocks (24) and guide pillars (25) are provided on the main support (21) and the sub-support (22); the vacuum suction holes (23) include at least two, which are downwardly sucked by vacuum negative pressure. Adsorbing and fixing the flexible FPC (0); at least two vacuum suction holes (23) are arranged at intervals along the X-axis direction on the main support (21); at least two vacuum suction holes (23) are arranged at intervals along the Y-axis direction on the auxiliary support (22); the limiting blocks (24) include at least two, and at least two limiting blocks (24) are arranged on both sides of the vacuum suction holes (23) for limiting and guiding the flexible FPC (0); the guide pillars (25) include at least two, and at least two guide pillars (25) are arranged between two adjacent vacuum suction holes (23) for upward insertion into the through hole of the flexible FPC (0) so as to guide and limit the flexible FPC (0); The transverse movement mechanism includes a bending support (51), a bending transverse movement slide (52) and a bending transverse movement cylinder (53), wherein the bending support (51) is horizontally arranged, and a slide rail is provided on the bending support (51) along the X-axis direction; the bending transverse movement slide (52) is slidably arranged on the slide rail; the bending transverse movement cylinder (53) is arranged on the bending support (51) along the X-axis direction, and the output end is connected to the bending transverse movement slide (52), and drives the bending transverse movement slide (52) to move linearly along the X-axis direction, so that the bending mechanism (55) moves to the bottom of the horizontally suspended bending part (02); The bending mechanism (55) includes a rotating component, a bending bearing component and a pressing component, wherein the rotating component is arranged on the bending transverse slide (52) and outputs a rotating power in a vertical plane; the bending bearing component is arranged on the rotating output end of the bending component, the bending bearing component carries the bending part (02), and outputs a linear power along the Y-axis direction, which is used to adjust the relative position between the bending part (02) and the bending part (02) before carrying and fixing the bending part (02); the pressing component is arranged on the bending bearing component, the pressing component outputs power along the vertical direction, which is used to press and fix the bending part (02) from above to avoid the position of the bending part (02) being offset during the turning and bending process.

2. The pin-pressing flexible FPC bending device according to claim 1, characterized in that: The rotating assembly includes a vertical support plate (551), a rotating cylinder (552) and a rotating block (553), wherein the vertical support plate (551) includes two vertical support plates (551), and the two vertical support plates (551) are arranged on the bending transverse sliding seat (52) in parallel and spaced apart along the Y-axis direction, and a turning space is formed between the two vertical support plates; the rotating cylinder (552) is arranged on the inner side wall of a vertical support plate (551), and its output end is located in the turning space and outputs rotating power in a vertical plane; the rotating block (553) is connected to the output end of the rotating cylinder (552) and is driven by the rotating cylinder (552) to rotate.

3. The pin-pressing flexible FPC bending device according to claim 2, characterized in that: The bending bearing assembly comprises a rotating frame (554), a translation cylinder (555) and an adsorption seat (556), wherein the rotating frame (554) is a U-shaped bracket structure, one end of the rotating frame (554) is fixedly connected to the rotating block (553), and the other end of the rotating frame (554) is rotatably connected to another vertical support plate (551); the translation cylinder (555) is horizontally arranged in the U-shaped opening of the rotating frame (554), and the output end is arranged in the Y-axis direction; the adsorption seat (556) is slidable along the Y-axis direction. The absorbing seat (556) is arranged on the translation cylinder (555) and is connected to the output end of the translation cylinder (555). The top surface of the absorbing seat (556) is a horizontal bearing plane for bearing the bending portion (02). At least two vacuum suction nozzles are provided in the bearing plane to absorb and fix the bending portion (02) downward by vacuum negative pressure. The pressing assembly is arranged in the U-shaped opening of the rotating frame (554). The rotating frame (554) is driven by the rotating block (553) to rotate as a whole, so that the bending portion (02) completes a 180° turning along the bending line (A).

4. The pin-pressing flexible FPC bending device according to claim 3, characterized in that: The pressing assembly includes an air-proof cylinder (557), an air-proof seat (558), a pressing cylinder (559) and a pressing block (5510), wherein the air-proof cylinder (557) is arranged in the U-shaped opening of the rotating frame (554) along the X-axis direction, and its output end extends toward the X-axis direction; the air-proof seat (558) is slidably connected to the air-proof cylinder (557) along the X-axis direction and is connected to the output end of the air-proof seat (558); the pressing cylinder (559) is vertically arranged on the air-proof seat (558), and the output end is arranged upward. The pressing block (5510) is horizontally connected to the output end of the pressing cylinder (559) and extends horizontally to form a mountain-shaped pressing plane. The air-proof cylinder (557) drives the pressing block (5510) to approach or move away from the adsorption seat (556) along the X-axis direction, so that the adsorption seat (556) carries the bending portion (02) to reserve space above, and after the adsorption seat (556) carries the adsorbed bending portion (02), it moves to the top of the bending portion (02) and is driven by the pressing cylinder (559) to clamp and fix the bending portion (02) from above.

5. The pin-pressing flexible FPC bending device according to claim 4, characterized in that: The needle pressing mechanism (54) includes a needle pressing drive assembly, a connecting assembly and a needle pressing assembly, wherein the needle pressing drive assembly is arranged on the side wall of another vertical support plate (551), and the output end passes through the vertical support plate (551) and extends along the Y-axis direction; the connecting assembly is sleeved on the output end of the needle pressing drive assembly, the connecting assembly is rotatably connected to the vertical support plate (551), and is fixedly connected to the other end of the rotating frame (554), so as to support the rotating frame (554) while enabling the rotating frame (554) and the vertical support plate (551) to be rotatably connected; the needle pressing assembly freely passes through the inside of the connecting assembly along the Y-axis direction and is connected to the needle pressing drive assembly, and is driven by the needle pressing drive assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line (A).

6. A needle pressing mechanism of a needle pressing type flexible FPC flipping and bending device according to any one of claims 1 to 5, comprising vertical support plates (551) and a rotating frame (554) arranged in parallel and spaced apart, characterized in that: It also includes a pressure needle drive component, a connection component and a pressure needle component, wherein, The pressure needle drive assembly is arranged on the side wall of the vertical support plate (551), and the output end passes through the vertical support plate (551) and extends along the Y-axis direction; The connecting assembly is sleeved on the output end of the needle driving assembly, and the connecting assembly is rotatably connected to the vertical support plate (551) and fixedly connected to the rotating frame (554) on the side of the vertical support plate (551), so as to support the rotating frame (554) while enabling the rotating frame (554) and the vertical support plate (551) to be rotatably connected. The pressure needle assembly freely passes through the interior of the connecting assembly along the Y-axis direction and is connected to the pressure needle driving assembly. It is driven by the pressure needle driving assembly to move linearly along the Y-axis direction so as to approach or move away from the bending line of the flexible FPC.

7. The pin pressing mechanism of the pin pressing type flexible FPC flipping and bending device according to claim 6, characterized in that: The needle pressing drive assembly includes a needle pressing cylinder (541); the needle pressing cylinder (541) is arranged outside the vertical support plate (551), and the output end is arranged horizontally toward the vertical support plate (551); The connecting assembly includes a load-bearing bearing (542), a locking block (543) and a movable sleeve (544), wherein the load-bearing bearing (542) is arranged in a bearing mounting hole opened on the vertical support plate (551) and is fixedly connected to the vertical support plate (551) through the locking block (543); one end of the movable sleeve (544) is inserted into the load-bearing bearing (542) and is fixedly connected to the inner ring of the load-bearing bearing (542), and is rotatably connected to the vertical support plate (551) through the load-bearing bearing (542); the other end of the movable sleeve (544) is fixedly connected to the rotating frame (554); The pressure needle assembly includes a connecting guide sleeve (545), a transmission shaft (546) and a pressure needle piece (547), wherein the connecting guide sleeve (545) is inserted and fixed in the rotating frame (554); one end of the transmission shaft (546) is connected and fixed to the output end of the pressure needle cylinder (541), and the other end freely passes through the locking block (543), the load-bearing bearing (542), the movable sleeve (544) and the connecting guide sleeve (545) in sequence and extends to the outside of the connecting guide sleeve (545); the pressure needle piece (547) is detachably connected to the other end of the transmission shaft (546), and the pressure needle cylinder (541) drives the pressure needle piece (547) to move linearly close to or away from the bending line of the flexible FPC through the transmission shaft (546).

8. The pin-pressing flexible FPC bending device according to claim 7, characterized in that: The transmission shaft (546) includes a shaft body (5461) and a connector (5462), wherein one end of the shaft body (5461) is connected and fixed to the output end of the pressure needle cylinder (541); the connector (5462) is arranged on the other end face of the shaft body (5461), has an outer diameter smaller than that of the shaft body (5461), and has a thread on its surface; The pressure needle component (547) includes a pressure needle seat (5471) and a pressure needle (5472), wherein a connection hole (B) is provided on one end wall of the pressure needle seat (5471), and a thread is provided on the inner wall of the connection hole (B) so that the connector (5462) can be rotated and screwed into the connection hole (B) and fixed by threaded connection; the pressure needle (5472) is provided at the other end of the pressure needle seat (5471) and extends outward; A first locking hole (C) is also provided on the side wall of the needle seat (5471). The first locking hole (C) extends in a radial direction and is connected to the connecting hole (B) so that after the connecting head (5462) is inserted into the connecting hole (B), the connecting head (5462) can be fixed by an external pin.

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