CN220798639U - Flexible printed circuit board bending jig - Google Patents

Abstract

The application belongs to the technical field of camera module, discloses a flexible printed circuit board jig of buckling, include: the device comprises a base, a first pressing block, a movable pressing block, a bending die and a second pressing block; the base is provided with a platform surface, two positioning bosses are oppositely arranged on the platform surface, and two opposite side surfaces of the two positioning bosses are arranged to be vertical to the platform surface; the first pressing block is detachably embedded between the two positioning bosses, two side surfaces on the first pressing block are respectively provided with a first bending surface opposite to the two vertical surfaces, and the first pressing block is also provided with a second bending surface; the movable pressing block is movably arranged on the base and can move towards the first pressing block along the second bending surface from the positioning boss; the bending die is arranged on the base and is arranged on one side of the second bending surface; the second pressing block is detachably matched and pressed on the bending die. The flexible printed circuit board bending jig can improve bending precision and efficiency.

Description

Flexible printed circuit board bending jig

Technical Field

The application belongs to the technical field of camera modules, and particularly relates to a flexible printed circuit board bending jig.

Background

A module circuit board is arranged in the camera module and is used for realizing the electric connection and communication connection of various chips, elements and functional structures; typically, to accommodate the interior space of the module, a portion of the board body of the module circuit board may be configured as a flexible printed circuit board FPC (Flexible Printed Circuit) to accommodate the interior space trend thereof, or to implement some functional structure using the morphological structure of the FPC. As shown in fig. 1 and 2, a certain FPC product is connected between the motherboard 10 and the two connectors 16 through two FPCs, respectively, and in order to achieve a certain three-dimensional supporting capability, the two FPCs may be bent multiple times to form a three-dimensional FPC structure with a certain spatial shape.

Specifically, the FPC includes a first transverse section 11, a longitudinal section 13, and a second transverse section 15, wherein the first transverse section 11 is connected to the longitudinal section 13 by a first bending section 12 bent at ninety degrees, and the longitudinal section 13 is also connected to the second transverse section 15 by a second bending section 14 bent at ninety degrees. Referring to fig. 1, the initial state of the fpc is a flat state, referring to fig. 2, the product state of the fpc is a three-dimensional state, a first bending portion 21 is required to be arranged in the direction perpendicular to the board surface in the joint region of the first transverse section 11 and the board body 10, a second bending portion 22 is required to be arranged in the middle of the longitudinal section in the direction perpendicular to the board surface, and a third bending portion 23 is required to be arranged in the direction perpendicular to the board surface in the joint region of the second transverse section 15 and the connector 16.

In general, in order to realize bending and forming of the FPC, semi-automatic gradual bending can be performed through manual work or auxiliary tools, the precision is limited by the technical proficiency of operators, the fluctuation is large, the defective rate is high, and the bending efficiency is not ideal.

Disclosure of Invention

The application provides a jig for bending a flexible printed circuit board, which aims at solving the technical problems that the bending forming precision of the flexible printed circuit board is not high and the efficiency is not ideal to a certain extent at least. For this purpose,

the embodiment of the application provides a flexible printed circuit board jig of buckling, include: the device comprises a base, a first pressing block, a movable pressing block, a bending die and a second pressing block;

the base is provided with a platform surface, two positioning bosses are oppositely arranged on the platform surface, and two opposite side surfaces of the two positioning bosses are perpendicular to the standing surface of the platform surface;

the first pressing block is detachably embedded between the two positioning bosses, two side surfaces on the first pressing block are respectively provided with a first bending surface opposite to the two standing surfaces, and the first pressing block is also provided with a second bending surface connected between the two first bending surfaces;

the movable pressing block is movably arranged on the base, can move from the positioning boss to the first pressing block along the second bending surface, and is provided with a third bending surface opposite to the second bending surface;

the bending die is arranged on the base and is arranged on one side of the second bending surface;

the second pressing block is detachably matched and pressed on the bending die.

In some embodiments, the standing surface is provided with an adjusting groove.

In some embodiments, a plate body positioning groove is formed in the platform surface, the plate body positioning groove is arranged between the two standing surfaces, and the plate body positioning groove is located below the first pressing block.

In some embodiments, the flexible printed circuit board bending jig further comprises: positioning a compaction block;

the positioning and compressing blocks are detachably arranged on the platform surface and are positioned between the two vertical surfaces, and the positioning and compressing blocks are arranged between the plate body positioning groove and the first pressing block;

and the width of the positioning compression block is smaller than that of the plate body positioning groove in the direction of the connecting line of the two vertical surfaces.

In some embodiments, a first positioning guide column is arranged on the base, a first positioning guide hole is formed in the first pressing block, the first positioning guide column is movably arranged in the first positioning guide hole, and the axial direction of the first positioning guide column is perpendicular to the platform surface.

In some embodiments, a second positioning guide upright post is arranged on the platform surface, a first guide waist-shaped hole is formed in the movable pressing block, and the second positioning guide upright post is movably arranged in the first guide waist-shaped hole;

the axial direction of the second positioning guide upright post is perpendicular to the platform surface, and the long axis direction of the first guide waist-shaped hole is consistent with the moving direction of the movable pressing block.

In some embodiments, the movable pressing block is provided with a guide limiting pin shaft, the positioning boss is provided with a second guide waist-shaped hole, and the guide limiting pin shaft is movably arranged in the second guide waist-shaped hole;

the axial direction of the guide limiting pin shaft is parallel to the platform surface and perpendicular to the moving direction of the movable pressing block, and the long axis direction of the second guide waist-shaped hole is consistent with the moving direction of the movable pressing block.

In some embodiments, the second compact comprises: an upper cover and a compression mold;

the upper cover is propped against the positioning boss, a second positioning guide hole is formed in the upper cover, a third positioning guide upright post is arranged on the base, the third positioning guide upright post is movably arranged in the second positioning guide hole, and the axial direction of the third positioning guide upright post is perpendicular to the platform surface;

the compression section mould is arranged on the upper cover, and the compression section mould is matched and compressed on the bending section mould.

In some embodiments, an elastic pressing piece is arranged on the upper cover, and when the movable pressing block is located at the working position, the elastic pressing piece is elastically abutted on the movable pressing block.

In some embodiments, a magnetic tensioning assembly is connected between the platform surface and the first pressing block, between the positioning boss and the upper cover, and between the positioning boss and the movable pressing block.

The embodiment of the application has at least the following beneficial effects:

according to the bending jig for the flexible printed circuit board, a flat table surface is arranged on a base and is used as a basic plane for bending operation, two positioning bosses are arranged on the flat table surface, opposite side wall surfaces of the two positioning bosses are arranged to be vertical to the standing surface of the flat table surface, a U-shaped groove is formed, and two bending right angles are formed; a first bending surface opposite to the standing surface is formed on the first pressing block, so that when the first pressing block is pressed down, the FPC on two sides of the main board is vertically bent upwards relative to the main board by utilizing the cooperation of the standing surface and the first bending surface to form a standing shape, and the first bending operation is completed; a second bending surface connected between the two first bending surfaces is arranged on the first pressing block, so that a corner structure is formed between the first bending surfaces and the second bending surfaces, then the movable pressing block moves from the positioning boss to the first pressing block along the second bending surfaces, the FPC clamped between the standing surface and the first bending surfaces is pushed and bent again by using a third bending surface arranged on the movable pressing block, and part of the FPC plate body is restrained between the second bending surfaces and the third bending surfaces, so that the second bending operation is completed; after two times of bending are completed, the rest FPC board body can be bent under the matched pressing operation of the bending die and the second pressing block, so that the multi-section bending and forming operation is completed. It is worth to say that, in the section-by-section bending operation, the standing surface and the first bending surface as well as the second bending surface and the third bending surface are restrained and limited by sections, so that the position precision of the back section bending operation can be kept by utilizing the clamping and positioning effect of the front section operation, and unnecessary swing and misalignment errors are avoided; meanwhile, based on the platform surface of the base, a matched positioning boss, a first pressing block, a movable pressing block and a second pressing block are arranged, the first pressing block, the movable pressing block and the second pressing block are sequentially operated to realize in-situ continuous bending, displacement accumulation errors caused by moving the FPC are avoided, and bending efficiency is improved on the premise of ensuring bending precision.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic diagram of a tiling structure of an FPC according to an embodiment of the present application;

fig. 2 shows a schematic view of a bent perspective structure of the FPC in fig. 1;

fig. 3 is a schematic diagram showing a split structure of a bending jig for a flexible printed circuit board according to an embodiment of the present application;

FIG. 4 is a schematic diagram showing the assembly of the base of the bending jig for the flexible printed circuit board in FIG. 3;

fig. 5 is a schematic structural diagram illustrating a second press block of the flexible printed circuit board bending jig in fig. 3;

fig. 6 is an assembly schematic diagram of a second press block and an elastic pressing member of the flexible printed circuit board bending jig in fig. 3;

fig. 7 is an assembly schematic diagram of a positioning boss and a guiding and limiting pin of the flexible printed circuit board bending jig in fig. 3;

fig. 8 is a schematic structural diagram showing a movable pressing block of the flexible printed circuit board bending jig in fig. 3;

fig. 9 is a schematic structural view showing a base of the flexible printed circuit board bending jig in fig. 3;

fig. 10 is a top view showing a bending operation state of the bending jig for the flexible printed circuit board of fig. 3;

FIG. 11 is a right side view of the flexible printed circuit board bending jig of FIG. 10;

fig. 12 is a cross-sectional view of the flexible printed circuit board bending jig of fig. 11.

Reference numerals:

10-main board, 11-first transverse section, 12-first bending section, 13-longitudinal section, 14-second bending section, 15-second transverse section, 16-connector, 21-first bending part, 22-second bending part, 23-third bending part;

100-a base, 110-a platform surface, 111-a plate body positioning groove, 112-a second magnet, 120-a positioning boss, 121-a vertical surface, 122-an adjusting groove, 123-a second guide waist-shaped hole, 124-a guide surface, 125-a first magnet, 130-a first positioning guide upright, 140-a second positioning guide upright and 150-a third positioning guide upright;

200-a first pressing block, 210-a first bending surface, 220-a second bending surface, 230-a first positioning guide hole and 240-a positioning pressing block;

300-movable pressing blocks, 310-third bending surfaces, 320-first guide waist-shaped holes, 330-guide limit pins and 340-second magnets;

400-bending type mould;

500-second press block, 510-upper cover, 511-fastening screw hole, 520-compression mould, 530-second positioning guide hole, 540-elastic compression piece, 541-contact surface.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not in themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

the camera module is provided with an FPC flexible printed circuit board to realize the electric connection and communication of each element on the module circuit board, and in general, the camera module can be arranged into various plane or three-dimensional forms in order to adapt to the internal structure of the module; for this reason, the FPC needs to be bent once or multiple times, and usually, an operator is required to manually or operate a semi-automatic device to realize the bending operation, the bending operation quality and the forming precision are greatly affected by the operation skill, the operation error is increased, and along with the increase of the bending times, the bending position precision error is increased more and more, and the bending efficiency is also adversely affected.

Therefore, the embodiment of the application provides a flexible printed circuit board bending jig, which integrates the multi-section bending operation of an FPC on one tool jig, and depends on the set matching relation of each component structure on the tool jig to operate step by step, so that the in-situ orderly multi-section bending of the FPC can be realized, the bending precision is improved, and the bending operation efficiency is improved.

Referring to fig. 1 and 2, a bent FPC product according to an embodiment of the present application includes a main board 10, two ends of which are respectively provided with FPCs to be bent; taking one of the FPCs to be bent as an example, the FPCs to be bent comprise a first transverse section 11, a longitudinal section 13 and a second transverse section 15 which are sequentially connected; the first transverse section 11 is connected with the longitudinal section 13 through a ninety-degree bent first bending section 12, and the longitudinal section 13 is also connected with the second transverse section 15 through a ninety-degree bent second bending section 14. The initial state of the FPC is a flat state, the product state of the FPC is a three-dimensional state, a first bending part 21 is required to be vertically bent in the direction vertical to the board surface in the joint area of the first transverse section 11 and the board body 10, a second bending part 22 is required to be vertically bent in the middle part of the longitudinal section in the direction vertical to the board surface, and a third bending part 23 is required to be vertically bent in the direction vertical to the board surface in the joint area of the second transverse section 15 and the connector 16; that is, three vertical bending operations are required for the one-sided FPC, and the operations require bending operations in different directions at three position points in space.

Referring to fig. 3 and 9, the flexible printed circuit board bending fixture provided in the embodiment of the application includes: base 100, first press block 200, movable press block 300, bending die 400, and second press block 500.

The base 100 is a basic platform for bending operation, and related components for bending operation are all arranged on the base, so that a unified operation reference can be formed, and basic assurance is provided for improving the precision of bending operation. Wherein, the base 100 is provided with a platform surface 110 as a base plane for bending operation, and the FPC can be tiled on the platform surface to operate the functional components on the base 100 to perform bending operation.

To achieve bending of the first transverse section 11 at two sides of the main board 10, two positioning bosses 120 are oppositely disposed on the platform surface 110, and two opposite side surfaces of the two positioning bosses 120 are perpendicular to a standing surface 121 of the platform surface 110; that is, the standing surface 121 forms a corner with the platform surface 110 as a bending die to facilitate ninety degree bending operation of the FPC; and the bending of the two first transverse sections 11 relative to the main board 10 can be realized without moving the main board 10, so as to avoid the degradation of the bending position precision.

When the first transverse segment 11 is bent, the first pressing block 200 may be inserted between the two positioning bosses, the main board 10 may be pressed against the platform surface 110, the first transverse segment 11 may be pressed against the corner between the standing surface 121 and the platform surface 110, and the first bending portion 21 may be bent. For this purpose, the side surfaces of the first press block 200 opposite to the two standing surfaces 121 are formed into a first bending surface 210, and when the first press block 200 is pressed down, the first transverse section 11 and the longitudinal section 13 are constrained between the first bending surface 210 and the standing surface 121, so that the swing amplitude of the first transverse section 11 is limited in the bending process, the bending form of the first transverse section 11 is kept stable, and meanwhile, the positions of the first transverse section 11 and the longitudinal section 13 are limited, so that a good position precision foundation is provided for the subsequent bending of the longitudinal section 13 and the second transverse section 15.

In order to bend the longitudinal section 13 at the second bending portion 22, a second bending surface 220 is further provided on the first pressing block 200, and the second bending surface 220 is connected between the two first bending surfaces 210; that is, a corner is formed between the first bending surface 210 and the second bending surface 220, and the longitudinal section 13 can be pushed to bend at the corner.

In cooperation, the movable pressing block 300 is movably disposed on the base 100, and a third bending surface 310 opposite to the second bending surface 220 is formed on the movable pressing block 300, when the bending of the longitudinal section 13 is implemented, the movable pressing block 300 can move from the positioning boss 120 to the first pressing block 200 along the second bending surface 220, the longitudinal section 13 is pushed to bend at a corner between the first bending surface 210 and the second bending surface 220 by the third bending surface 310, and a part of the bent longitudinal section 13 is restrained between the second bending surface 220 and the third bending surface 310, so that the bending form of the longitudinal section 13 is kept stable; while limiting the position of the longitudinal sections 13, providing a good basis for positional accuracy for subsequent bending of the second transverse section 15.

Considering that the second transverse section 15 is substantially vertical with respect to the landing 1110 after two bends, its tail area abuts against the landing 110. In order to perform the bending operation of the second transverse segment 15, a bending die 400 may be provided on the base 100, and the bending die 400 may be provided adjacent to the second bending surface 220 at one side thereof; after two bends, the tail region of the second transverse segment 15 can be spread over the bending die 400, for which purpose the second transverse segment 15 can be bent by means of the profile of the bending die 400 by pressing down on the second press block 500; thereby realizing three-section bending operation as a whole.

It should be noted that, the gap between the standing surface 121 and the first bending surface 210 and the gap between the second bending surface 220 and the third bending surface 310 may be set according to the thickness matching of the FPC board, and the matching height of the bending die 400 and the second pressing block 500 may limit the swing of the FPC board body.

In some embodiments, the number of the movable pressing blocks may be two, which respectively correspond to the bending of the longitudinal sections 13 of the FPC on both sides of the main board 10.

In some embodiments, the first bending surface 210 and the second bending surface 220 may be disposed perpendicular to the platform surface 100, and the first bending surface 210 and the second bending surface 220 are also perpendicular to each other, so as to ensure that two sections of the bent longitudinal section 13 are bent perpendicular to the board surface.

In some embodiments, the positioning boss 120 may be integrally formed with the base 100 to ensure high positioning and forming accuracy; of course, a group pair mounting form may be provided, and the present embodiment is not particularly limited.

According to the bending jig for the flexible printed circuit board, the mainboard 10 of the FPC is arranged on the platform surface arranged on the base, the first pressing block 200 is sequentially pressed down, the movable pressing block 300 is moved, and then the second pressing block 500 is pressed down, so that three times of bending are respectively realized; in the process, the positioning boss 120 and the first pressing block 200 are used for pressing the main board 10, so that the position of the main board is kept stable, the first transverse section 11 and the longitudinal section 13 are clamped, the posture and the position stability of the FPC are kept, the swing is limited, the precision of each bending position is ensured, and the integral bending quality is ensured. Meanwhile, based on the base 100, the first press block 200, the movable press block 300 and the second press block 500 are operated to realize continuous bending of the FPC board in situ, and the bending plate body at a plurality of positions does not need to be repeatedly moved, so that the problem of unreliable position precision caused by displacement is avoided to a certain extent, the bending operation is simplified, and the operation efficiency is improved to a certain extent.

Referring to the figure, in some embodiments, in order to cope with the situation that the accidental shape and position in the bending process are not ideal, an adjusting groove 122 may be formed on the standing surface 121, and when the bending operation is implemented, a crochet hook or other tool may be used to toggle the FPC at the adjusting groove 122 to perform appropriate adjustment, so as to ensure the final forming quality.

Referring to the drawings, in some embodiments, in order to improve the initial positioning accuracy of the FPC, a board positioning groove 111 may be formed on the platform surface 110, and the board positioning groove 111 may be disposed between the two standing surfaces 121, so that the main board 10 is disposed inside before the bending operation, and the accuracy of the initial position is ensured. On the other hand, when the main board 10 is disposed in the board positioning groove 111, some electrical connection structures such as pads on the main board 10 can be protected from being crushed by the first pressing block 200.

In general, the board positioning groove 111 may be correspondingly disposed below the first pressing block 200, so that the FPC may be stably pressed when the first pressing block 200 is pressed down. And, the specification size and shape of the board positioning groove 111 can be matched with the specific shape and specification of the motherboard 10.

Referring to the drawings, in some embodiments, considering that the main board 10 is at risk of moving during pressing FPC deformation during pressing down of the first press block 200, this will affect the positional accuracy of further bending.

For this reason, the flexible printed circuit board bending jig may further be provided with a positioning and pressing block 240, and in the direction of the connection line of the two standing surfaces 121, the width of the positioning and pressing block 240 is smaller than the width of the board body positioning groove 111, that is, the two sides of the positioning and pressing block 240 in the width direction leave enough bending operation space to the first bending parts 21 on the two sides of the main board 10, so that the positioning and pressing block 240 can be placed on the flat board 110 between the two standing surfaces 121, and the main board 10 placed in the board body positioning groove 111 is limited to avoid detachment thereof, and meanwhile, the bending operation of the first transverse sections 11 on the two sides of the main board 10 is not affected. Thus, when the first transverse segment 11 is bent by pressing the first pressing block 200, the movement of the main plate 10 is prevented from affecting the bending accuracy.

Referring to the drawings, in some embodiments, in order to improve the accuracy of the pressing position of the first pressing block 200, a first positioning guide column 130 is provided on the base 100, a first positioning guide hole 230 is provided on the first pressing block 200, the first positioning guide column 130 may be disposed in the first positioning guide hole 230 along the axial movement thereof, and the axial direction of the first positioning guide column 130 is perpendicular to the platform surface 110, so that the first pressing block 200 may be pressed down along the first positioning guide column 130, and stably positioned, and the position stability of the main board 10 is realized by combining the positioning pressing block 240 and the board positioning groove 11, and the bending accuracy is integrally improved.

Generally, the number of the first positioning guide columns 130 may be two or more to limit the pivot swing of the first press block 200, so as to ensure the pressing precision; alternatively, the first positioning guide post 130 and the first positioning guide hole 230 may be configured to be in a matching rotation-stopping configuration, such as a rectangular cross section.

Correspondingly, the positioning and compressing block 240 may also be provided with a positioning and guiding hole 241 matching with the first positioning and guiding upright 130, so as to guide the installation of the positioning and compressing block 240.

Referring to the figure, in some embodiments, in order to maintain the stability of the moving posture of the movable pressing block 300, a second positioning guide upright 140 may be disposed on the platform surface 110, a first guiding waist-shaped hole 320 is formed on the movable pressing block 300, and the second positioning guide upright 140 is embedded in the first guiding waist-shaped hole 320 and may move along the long axis direction of the first guiding waist-shaped hole 320; the axial direction of the second positioning guide upright 140 is perpendicular to the platform surface 110, and the long axis direction of the first guide waist-shaped hole 320 is consistent with the preset moving direction of the movable pressing block 300, so that the movable pressing block 300 can be ensured to move along a preset track in the platform surface 110, and bending operation is stably performed, and bending precision and bending quality are ensured.

In some embodiments, in order to further limit the swing of the movable pressing block 300 in the direction perpendicular to the platform surface 110, a guide limiting pin 330 may be further disposed on the movable pressing block 300, a second guide waist-shaped hole 123 is formed on the positioning boss 120, and the guide limiting pin 330 is disposed in the second guide waist-shaped hole 123 and may move along the long axis direction of the second guide waist-shaped hole 123; the axial direction of the guiding limiting pin 330 is parallel to the platform surface 110 and perpendicular to the moving direction of the movable pressing block 300, and the long axis direction of the second guiding waist-shaped hole 123 is consistent with the moving direction of the movable pressing block 300, so that the upward movement of the movable pressing block 300 is limited by the guiding limiting pin 330.

In some embodiments, in order to improve the smoothness of the movement of the movable pressing block 300, a guide surface 124 parallel to the second bending surface 220 may be disposed on the positioning boss 120, and the sidewall surface on the movable pressing block 300 may be movably abutted against the guide surface 124, so as to stably slide along the second bending surface 220 and inhibit the swing amplitude.

Referring to the drawings, in some embodiments, in order to facilitate the accurate positioning of the second press 500 for bending, the second press 500 may be provided as a combined structure of an upper cover 510 and a pressing die 520, wherein the upper cover 510 serves as a carrier of the pressing die 520, and the pressing die 520 is indirectly moved by moving the upper cover 510 to be aligned with the bending die 400.

In order to realize stable and accurate movement of the upper cover 510, a second positioning guide hole 530 may be formed in the upper cover 510, a third positioning guide upright 150 is disposed on the base 100, the third positioning guide upright 150 is disposed in the second positioning guide hole 530 along the axial direction thereof, and the axial direction of the third positioning guide upright 150 is perpendicular to the platform surface 110; so that the upper cover 510 can stably guide the compression mold 520 to be dropped in the positioning guide of the third positioning guide column 150.

In order to control the pressing width of the upper cover 510, the pressing bending operation is performed with an appropriate pressing width, the upper cover 510 may be abutted against the top of the positioning boss 120, so that the upper cover 510 and the pressing mold 520 thereon are maintained at a predetermined position by the height design of the positioning boss 120, leaving a sufficient gap for the FPC to dig into the molding between the pressing mold 520 and the bending mold 400.

Referring to the drawings, in some embodiments, considering that various error factors such as wear may cause the movable pressing block 300 not to reach a preset bending working position, or working conditions such as insufficient bending force and the like, which are unfavorable for bending and forming of the FPC, an elastic pressing member 540 may be further disposed on the upper cover 510, and after the upper cover 510 is pressed down to a position, the elastic pressing member 540 may be elastically abutted against the movable pressing block 300, so as to apply an elastic pushing force, so as to cause the movable pressing block 300 to remain in the bending working position, and maintain the bending form of the FPC.

In some embodiments, a fastening screw hole 511 may be formed on the upper cover 510, the elastic pressing member 540 may be screwed into the fastening screw hole 511, and after the upper cover 510 is in place, the elastic pressing member 540 may be rotated to move axially, so as to maintain a certain elastic force to abut against the movable pressing block 300.

Generally, the contact surface 541 between the elastic pressing member 540 and the movable pressing block 300 is spherical, so as to keep a small friction contact surface and reduce wear.

Referring to the figures, in some embodiments, to maintain the stability of the position and posture of the bend compression and manipulation assembly, the position and relative posture of the two can be maintained by providing a magnetic attraction assembly between the relatively moving or movable bodies, applying a magnetic attraction tightening force in a contactless manner.

Specifically, magnetic tightening components may be connected between the platform surface 110 and the first pressing block 200, between the positioning boss 110 and the upper cover 510, and between the positioning boss 110 and the movable pressing block 300, respectively.

In general, each group of bending jigs may be provided as a metal piece that can be attracted by a magnet, so that the structure of the magnetic attraction tightening assembly may be simplified.

A first magnet 125 may be disposed on the positioning boss to attract and tighten the upper cover 510, a second magnet 340 may be disposed on the movable press block 300 to attract and tighten the movable press block 300 on the positioning boss 110, and a third magnet 113 may be disposed on the platform surface 110 of the base 100 to attract and tighten the first press block 200 or the positioning press block 240.

Referring to the figure, when bending is performed, the main board 10 of the FPC to be bent is first disposed in the board positioning groove 111, and then the positioning pressing block 240 is pressed down on the platform surface 110 along the first positioning guide post 130, and the main board 10 is limited in the board positioning groove 111; pressing the first pressing block 200 down along the first positioning guide upright 130 against the positioning pressing block 300, and bending the first transverse section 11 in the process; then pushing the movable pressing blocks 300 respectively, bending the longitudinal sections 13 clamped between the standing surfaces 121 and the first bending surfaces 210 towards the second bending surfaces 220, and gradually restraining the longitudinal sections between the second bending surfaces 220 and the third bending surfaces 310; and pressing the upper cover 510 down along the third positioning guide post 150 until the upper cover abuts against the positioning boss 110, wherein the pressing die 520 cooperates with the bending die 400 to bend the second transverse section 15 and the third bending portion 23.

The embodiment of the application has at least the following beneficial effects:

according to the bending jig for the flexible printed circuit board, a flat table surface is arranged on a base and is used as a basic plane for bending operation, two positioning bosses are arranged on the flat table surface, opposite side wall surfaces of the two positioning bosses are arranged to be vertical to the standing surface of the flat table surface, a U-shaped groove is formed, and two bending right angles are formed; a first bending surface opposite to the standing surface is formed on the first pressing block, so that when the first pressing block is pressed down, the FPC on two sides of the main board is vertically bent upwards relative to the main board by utilizing the cooperation of the standing surface and the first bending surface to form a standing shape, and the first bending operation is completed; a second bending surface connected between the two first bending surfaces is arranged on the first pressing block, so that a corner structure is formed between the first bending surfaces and the second bending surfaces, then the movable pressing block moves from the positioning boss to the first pressing block along the second bending surfaces, the FPC clamped between the standing surface and the first bending surfaces is pushed and bent again by using a third bending surface arranged on the movable pressing block, and part of the FPC plate body is restrained between the second bending surfaces and the third bending surfaces, so that the second bending operation is completed; after two times of bending are completed, the rest FPC board body can be bent under the matched pressing operation of the bending die and the second pressing block, so that the multi-section bending and forming operation is completed. It is worth to say that, in the section-by-section bending operation, the standing surface and the first bending surface as well as the second bending surface and the third bending surface are restrained and limited by sections, so that the position precision of the back section bending operation can be kept by utilizing the clamping and positioning effect of the front section operation, and unnecessary swing and misalignment errors are avoided; meanwhile, based on the platform surface of the base, a matched positioning boss, a first pressing block, a movable pressing block and a second pressing block are arranged, the first pressing block, the movable pressing block and the second pressing block are sequentially operated to realize in-situ continuous bending, displacement accumulation errors caused by moving the FPC are avoided, and bending efficiency is improved on the premise of ensuring bending precision.

In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate or positional relationships are based on the positional relationships shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A flexible printed circuit board bending jig is characterized by comprising: the device comprises a base, a first pressing block, a movable pressing block, a bending die and a second pressing block;

the base is provided with a platform surface, two positioning bosses are oppositely arranged on the platform surface, and two opposite side surfaces of the two positioning bosses are perpendicular to the standing surface of the platform surface;

the first pressing block is detachably embedded between the two positioning bosses, two side surfaces on the first pressing block are respectively provided with a first bending surface opposite to the two standing surfaces, and the first pressing block is also provided with a second bending surface connected between the two first bending surfaces;

the movable pressing block is movably arranged on the base, the movable pressing block can move from the positioning boss to the first pressing block along the second bending surface, and a third bending surface opposite to the second bending surface is arranged on the movable pressing block;

the bending die is arranged on the base and is arranged on one side of the second bending surface;

the second pressing block is detachably matched and pressed on the bending die.

2. The flexible printed circuit board bending jig of claim 1, wherein the standing surface is provided with an adjusting groove.

3. The jig for bending a flexible printed circuit board according to claim 1, wherein a board body positioning groove is formed in the platform surface, the board body positioning groove is formed between the two standing surfaces, and the board body positioning groove is located below the first pressing block.

4. The flexible printed circuit board bending jig of claim 3, further comprising: positioning a compaction block;

the positioning and compressing blocks are detachably arranged on the platform surface and are positioned between the two vertical surfaces, and the positioning and compressing blocks are arranged between the plate body positioning groove and the first pressing block;

and the width of the positioning compression block is smaller than that of the plate body positioning groove in the direction of the connecting line of the two vertical surfaces.

5. The flexible printed circuit board bending jig according to claim 1, wherein a first positioning guide column is arranged on the base, a first positioning guide hole is formed in the first pressing block, the first positioning guide column is movably arranged in the first positioning guide hole, and the axial direction of the first positioning guide column is perpendicular to the platform surface.

6. The flexible printed circuit board bending jig according to claim 1, wherein a second positioning guide upright post is arranged on the platform surface, a first guide waist-shaped hole is formed on the movable pressing block, and the second positioning guide upright post is movably arranged in the first guide waist-shaped hole;

the axial direction of the second positioning guide upright post is perpendicular to the platform surface, and the long axis direction of the first guide waist-shaped hole is consistent with the moving direction of the movable pressing block.

7. The flexible printed circuit board bending jig according to claim 6, wherein the movable pressing block is provided with a guide limit pin shaft, the positioning boss is provided with a second guide waist-shaped hole, and the guide limit pin shaft is movably arranged in the second guide waist-shaped hole;

the axial direction of the guide limiting pin shaft is parallel to the platform surface and perpendicular to the moving direction of the movable pressing block, and the long axis direction of the second guide waist-shaped hole is consistent with the moving direction of the movable pressing block.

8. The flexible printed circuit board bending jig according to any one of claims 1 to 7, wherein the second press block includes: an upper cover and a compression mold;

the upper cover is propped against the positioning boss, a second positioning guide hole is formed in the upper cover, a third positioning guide upright post is arranged on the base, the third positioning guide upright post is movably arranged in the second positioning guide hole, and the axial direction of the third positioning guide upright post is perpendicular to the platform surface;

the compression section mould is arranged on the upper cover, and the compression section mould is matched and compressed on the bending section mould.

9. The flexible printed circuit board bending jig according to claim 8, wherein an elastic pressing member is provided on the upper cover, and the elastic pressing member elastically abuts against the movable pressing block when the movable pressing block is located at the working position.

10. The flexible printed circuit board bending jig of claim 8, wherein magnetic tensioning assemblies are respectively connected between the platform surface and the first press block, between the positioning boss and the upper cover and between the positioning boss and the movable press block.