Rotating disc type bending machine based on FPC (Flexible Printed Circuit)

Abstract

The invention discloses a rotating disc type bending machine based on an FPC (Flexible Printed Circuit), which comprises a rack body, a rotating disc and a plurality of bending stations, a rotating disc driving mechanism is arranged at the bottom of the rotating disc, the rotating disc is rotated through the rotating disc driving mechanism, and the rack body forms an outer wrapping on the rotating disc; bearing assemblies are arranged at equal division positions of the upper surface where the rotating disc is located, and bearing placement of the flexible circuit board part is formed through the bearing assemblies; and the bending stations are distributed on the periphery of the rotary disc, the multiple bending stations are arranged at the equally-divided positions, each bending station comprises an upper module and a lower module, a sliding assembly is arranged on the upper module in the vertical direction, and a first fixing platform is arranged below the sliding assembly. The whole device has the advantages of being high in precision, high in efficiency, good in stability and the like, meets the high requirements for bending precision and the like of the flexible circuit board, and achieves bending automation of the flexible circuit board.

Description

Technical Field

[0001] The invention belongs to the technical field of flexible circuit board bending machines, and in particular relates to a turntable bending machine based on an FPC flexible circuit board. Background Art

[0002] FPC flexible circuit board is a circuit board made of flexible substrate (such as polyester film). Compared with traditional rigid circuit boards, it has the advantages of flexibility, lightness, and high space utilization. It is suitable for electronic devices with high space requirements, special shapes or curved installation.

[0003] Since most FPC flexible circuit boards are non-standard customized product designs and need to adapt to the internal shapes and spatial changes of various electronic devices, it is very important to ensure the reliability and durability of the circuit boards at the bends during the design and manufacturing process.

[0004] In the Chinese patent authorization announcement number CN104502833B, an FPC flexible circuit board bending and electrical measurement integrated machine and bending and electrical measurement method are disclosed, which maintains its bent state and then performs electrical measurement on it, reducing the use of fixtures and eliminating the need for two clamping and positioning, reducing production costs while improving production efficiency and measurement accuracy. Although this structure can realize the bending of flexible circuit boards, it is limited to a single bending operation. For complex multiple bending, multiple devices need to be operated in coordination, which increases the complexity of intermediate links, affects the bending efficiency, and the bending accuracy is difficult to guarantee. Summary of the invention

[0005] In view of the deficiencies of the prior art, the purpose of the present invention is to provide a turntable bending machine based on FPC flexible circuit board, which solves the above-mentioned technical problems existing in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A turntable bending machine based on FPC flexible circuit board, including a frame body, a turntable, and multiple bending stations.

[0008] A turntable driving mechanism is provided at the bottom of the turntable, through which the turntable is rotated, and the frame body forms an outer wrapping of the turntable;

[0009] A bearing assembly is arranged at equal positions on the upper surface of the rotating disk, and the flexible circuit board is supported and placed by the bearing assembly;

[0010] The bending stations are distributed on the periphery of the turntable, and a plurality of them are arranged at equally divided positions. The bending stations are all independently driven. The bending stations include an upper module and a lower module. A sliding assembly is arranged in the vertical direction of the upper module, and a first fixed platform is arranged below the sliding assembly. A first angle bending piece is arranged on the upper module, so that the first angle bending piece penetrates the first fixed platform to form an extrusion bending on the upper surface of the flexible circuit board carried on the turntable;

[0011] The lower module is located below the positive projection of the upper module, and the gap between the upper module and the lower module when they are opened and closed is used for the rotation of the turntable; the lower module slides in the vertical direction, including a second fixed platform and a second angle bending member, so that the second angle bending member passes through the second fixed platform, thereby forming an extrusion bending on the lower surface of the flexible circuit board carried on the turntable;

[0012] The first angle bending parts and the second angle bending parts arranged on the plurality of bending stations have different inclination angles with the contact surface of the flexible circuit board component, so as to change the bending angle of the upper surface of the flexible circuit board component.

[0013] Furthermore, a first downward limiting protrusion column is provided on the lower end surface of the upper module, and a second upward limiting protrusion column is provided on the upper end surface of the lower module;

[0014] When the first limiting protrusion column and the second limiting protrusion column synchronously pass through the limiting hole opened on the turntable, the position of the turntable is limited. When the first limiting protrusion column and the second limiting protrusion column are separated from the limiting hole, the turntable rotates along the central axis direction.

[0015] Furthermore, the lower module and the upper module share a set of sliding components in the vertical direction to achieve sliding in the vertical direction.

[0016] Furthermore, a fixed-angle bending member is provided on the upper module, and a bending operation of the lower end surface of the flexible circuit board component is performed by the fixed-angle bending member.

[0017] Furthermore, the front end surface where the first angle bending member, the second angle bending member and the fixed angle bending member are located is set as an embedding groove, and a buffer member is embedded in the embedding groove. When bending, the buffer member contacts the surface of the flexible circuit board.

[0018] Furthermore, a transverse groove structure is arranged at the top where the first angle bending part is located, and an output motor is arranged at the top of the first angle bending part, the output end of the output motor is arranged as a T-block, and the T-block is embeddedly connected with the groove.

[0019] Furthermore, a rotating shaft is provided at the middle portion of the rotating disk, and an outward supporting arm extends from the rotating shaft, so that the flexible circuit board component carried on the rotating disk is pressed by the supporting arm.

[0020] Furthermore, the lower end surface of the support arm is configured as a contact block, and the contact surface between the contact block and the upper surface where the flexible circuit board component is located is a planar structure.

[0021] Furthermore, the bearing assembly is embedded in the surface where the turntable is located.

[0022] The bearing assembly is composed of a plurality of angled cavity blocks, and the angled cavity blocks are arranged at the bottom and the side positions. The angled cavity blocks arranged at the side are also provided with a micro-driving component in the horizontal direction, and the micro-driving component drives the angled cavity blocks to move in the horizontal direction, thereby forming a wrapping and pressing on the periphery of the flexible circuit board component, and the angled cavity block located at the bottom forms a support for the bottom of the flexible circuit board component.

[0023] Furthermore, the first angle bending piece and the second angle bending piece have the same structure.

[0024] Beneficial effects of the present invention:

[0025] 1. The multiple bending stations used in this device work simultaneously without affecting each other, and can synchronously complete the bending of the flexible circuit board components carried on the turntable. It has the advantages of high precision, high efficiency, and good stability. It is suitable for the high requirements of flexible circuit board bending accuracy and realizes the bending automation of flexible circuit boards.

[0026] 2. The bearing assembly used in this device can limit the bearing of the flexible circuit board component, thereby improving the accuracy of the bending station during the stamping bending process.

[0027] 3. The device adopts an angle bending part with a transverse groove on the top, and cooperates with the T-block at the output end to offset the lateral force generated by the angle bending part, so that the angle bending part can bend the flexible circuit board at a certain angle without causing movement deviation and affecting the accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2Schematic diagram of the connection state between the turntable and the bending station according to an embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the overall structure of a bending station in an embodiment of the present invention;

[0032] Figure 4 The embodiment of the present invention Figure 3 Schematic diagram of the partial structure at A in the middle;

[0033] Figure 5 It is a schematic diagram of the front structure of a bending station according to an embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of the side structure of a bending station according to an embodiment of the present invention;

[0035] Figure 7 The embodiment of the present invention Figure 6 Schematic diagram of the structure at B in the middle;

[0036] Figure 8 is a schematic diagram of the overall connection structure of the turntable according to an embodiment of the present invention;

[0037] Fig. 9 is a schematic diagram of the front structure of a turntable according to an embodiment of the present invention;

[0038] Fig.10 The embodiment of the present invention Figure 8 Schematic diagram of the partial structure at point C in the middle. DETAILED DESCRIPTION

[0039] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] like Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a turntable bending machine based on an FPC flexible circuit board, comprising a frame body 1, a turntable 2, and a plurality of bending stations 3.

[0041] like Figure 8-10 As shown, a turntable driving mechanism 21 is provided at the bottom of the turntable 2, through which the turntable 2 is rotated, and the frame body 1 forms an outer wrapping for the turntable 2 (thereby ensuring the stability of the working environment when the turntable 2 is rotating).

[0042] A bearing assembly 23 is evenly divided on the upper surface of the turntable 2, and the flexible circuit board component is supported and placed by the bearing assembly 23. Since the material of the flexible circuit board component is relatively soft at this time, the bearing assembly 23 (the bearing assembly 23 is composed of a plurality of angled cavity blocks 231, and the angled cavity blocks 231 are arranged at the bottom and side positions) is embedded in the surface of the turntable 2. Of course, the specific cavity needs to be replaced according to the shape of the flexible circuit board component, and the peripheral wrapping of the flexible circuit board component is formed by a plurality of angled cavity blocks.

[0043] The angled cavity block 231 arranged on the side is also provided with a micro-driving component 232 in the horizontal direction, and the angled cavity block 231 is driven to move in the horizontal direction by the micro-driving component 232 (when in use, the angled cavity block 231 is first driven by the micro-driving component 232 to open it, thereby facilitating the placement of the flexible circuit board component, and then the angled cavity block 231 is driven to fit the outside of the flexible circuit board component), thereby forming a wrapping, pressing and limiting effect on the outer periphery of the flexible circuit board component, and the angled cavity block 231 located at the bottom forms a support for the bottom of the flexible circuit board component.

[0044] A pressing assembly 233 is disposed on the upper surface of the bearing assembly 23 , and the pressing assembly 233 is used to press down the upper non-bending area of ​​the flexible circuit board.

[0045] like Figure 3-7 As shown, the bending stations 3 are distributed on the periphery of the turntable 2 (i.e., a plurality of bending stations 3 are arranged in equal parts along the supporting component 23, and each bending station 3 is independently controlled and driven), and the bending stations 3 include an upper module 31 and a lower module 32. A sliding component 311 is arranged in the vertical direction on the upper module 31, and a first fixed platform 312 is arranged below the sliding component 311. At the same time, a first angle bending member 313 is arranged on the upper module 31, so that the first angle bending member 313 passes through the first fixed platform 312, thereby forming an extrusion bending on the upper surface of the flexible circuit board carried on the turntable 2.

[0046] The lower module 32 is located below the positive projection of the upper module 31, and the gap between the upper module 31 and the lower module 32 is synchronously used for the rotation of the turntable 2 (that is, when the upper module 31 and the lower module 32 are separated from each other, a gap is left between the two modules for the rotation of the turntable 2. When the upper module 31 and the lower module 32 are locked with each other in the up and down directions, the rotation of the turntable 2 can be limited at the same time). The lower module 32 slides in the vertical direction, including a second fixed platform 322 and a second angle bending member 323, so that the second angle bending member 323 passes through the second fixed platform 322, thereby forming an extrusion bending of the lower surface of the flexible circuit board carried on the turntable 2.

[0047] The first angle bending parts 313 and the second angle bending parts 323 arranged on the multiple bending stations 3 have different inclination angles with the contact surface of the flexible circuit board component (the first angle bending parts 313 and the second angle bending parts 323 adopt the same structure) to form a change in the bending angle of the upper surface of the flexible circuit board component. Of course, according to the process requirements of the flexible circuit board component, the bending stations 3 can be increased or decreased to be more adaptable.

[0048] A first downward limiting protrusion 301 is disposed on the lower end surface of the upper module 31 , and a second upward limiting protrusion 302 is disposed on the upper end surface of the lower module 32 . At this time, a limiting hole 201 is opened on the turntable 2 .

[0049] When the first limiting protrusion column 301 and the second limiting protrusion column 302 synchronously pass through the limiting hole 201 opened on the turntable 2, the position of the turntable 2 is limited. When the first limiting protrusion column 301 and the second limiting protrusion column 302 are separated from the limiting hole 201, the turntable 2 rotates along the center axis direction (that is, at this time, the turntable 2 is located in the gap separated by the first limiting protrusion column 301 and the second limiting protrusion column 302 and rotates).

[0050] The lower module 32 and the upper module 31 share a set of sliding components 311 in the vertical direction to achieve sliding in the vertical direction. This method can ensure the accuracy of the lower module 32 and the upper module 31 when they are molded in the up and down directions.

[0051] A fixed angle bending piece 314 is also provided on the upper module 31. At this time, when the fixed angle bending piece 314 is pressed down with the upper module 31, the lower end surface of the flexible circuit board is bent only in the vertical direction through the fixed angle bending piece 314, and an offset bending is formed with the first angle bending piece 313, thereby ensuring the bending accuracy.

[0052] The front end surface where the first angle bending member 313, the second angle bending member 323 and the fixed angle bending member 314 are located is set as an embedding groove, and a buffer member 303 is embedded in the embedding groove. When bending, the buffer member 303 contacts the surface of the flexible circuit board component. This buffer member 303 directly contacts the surface of the flexible circuit board component, and after contact, the surface of the flexible circuit board component will not cause excessive extrusion damage. At the same time, after the buffer member 303 is worn, it can be replaced in time without replacing the entire angle bending member.

[0053] Furthermore, a horizontal groove 3131 structure is set at the top where the first angle bending piece 313 is located, and an output motor 314 is set at the top of the first angle bending piece 313, and the output end of the output motor 314 is set to a T-block 3141, and the T-block 3141 and the groove 3131 are embedded in each other. At this time, even if the output motor 314 is placed vertically, the vertical force arm can be converted into an offset tilting torque through the mutual offset of the T-block 3141 and the groove 3131, so that the first angle bending piece 313 can form a bending operation on the flexible circuit board at a certain angle.

[0054] A rotating shaft 22 is provided in the middle of the rotating disk 2, and an outward support arm 221 extends from the rotating shaft 22. The support arm 221 is used to press the flexible circuit board component carried on the rotating disk 2, and the lower end surface of the support arm 221 is set as a contact block 2211, and the contact surface between the contact block 2211 and the upper surface where the flexible circuit board component is located is a plane structure. That is, in the actual use link, the rotation of the rotating shaft 22 is adopted to realize the relative movement of the contact block 2211. When the pressing is produced, it is ensured that the angle bending part presses the adjacent positions of the flexible circuit board component when it is pressed down or lifted, and reduces its warping (of course, the contact block 2211 can move in the left and right directions to facilitate loading and unloading). Moreover, the entire device can realize the simultaneous processing and molding of the flexible circuit board components with the load of the rotating disk 2, and has the advantages of high precision, high efficiency, good stability, etc. It is suitable for the high requirements of the bending precision of the flexible circuit board, and realizes the bending automation of the flexible circuit board.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A turntable bending machine based on FPC flexible circuit board, comprising a frame body (1), a turntable (2), and a plurality of bending stations (3), characterized in that: A turntable drive mechanism (21) is provided at the bottom of the turntable (2), and the turntable (2) is rotated by the turntable drive mechanism (21), and the frame body (1) forms an outer wrapping for the turntable (2); A bearing assembly (23) is arranged at equal positions on the upper surface of the rotating disk (2), and the bearing assembly (23) is used to support and place the flexible circuit board component; The bending stations (3) are distributed on the periphery of the turntable (2), and a plurality of them are arranged at equally spaced positions, and the bending stations (3) are all independently driven. The bending stations (3) include an upper module (31) and a lower module (32). A sliding component (311) is arranged in the vertical direction on the upper module (31), and a first fixed platform (312) is arranged below the sliding component (311). A first angle bending member (313) is arranged on the upper module (31), so that the first angle bending member (313) passes through the first fixed platform (312), thereby forming an extrusion bending on the upper surface of the flexible circuit board carried on the turntable (2); The lower module (32) is located below the positive projection of the upper module (31), and the gap between the upper module (31) and the lower module (32) when they are opened and closed is used for the rotation of the turntable (2); the lower module (32) slides in the vertical direction, and includes a second fixed platform (322) and a second angle bending member (323), so that the second angle bending member (323) passes through the second fixed platform (322), thereby forming an extrusion bending of the lower surface of the flexible circuit board component carried on the turntable (2); The first angle bending members (313) and the second angle bending members (323) arranged on the plurality of bending stations (3) have different inclination angles with the contact surface of the flexible circuit board component, so as to change the bending angle of the upper surface of the flexible circuit board component.

2. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: A first downward limiting protrusion column (301) is provided on the lower end surface of the upper module (31), and a second upward limiting protrusion column (302) is provided on the upper end surface of the lower module (32); When the first limiting protrusion column (301) and the second limiting protrusion column (302) are synchronously passed through the limiting hole (201) provided on the turntable (2), the position of the turntable (2) is limited. When the first limiting protrusion column (301) and the second limiting protrusion column (302) are separated from the contact with the limiting hole (201), the turntable (2) rotates along the central axis.

3. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: The lower module (32) and the upper module (31) share a set of sliding components (311) in the vertical direction to achieve sliding in the vertical direction.

4. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: A fixed-angle bending piece (314) is also provided on the upper module (31), and a bending operation of the lower end surface flexible circuit board component is performed by the fixed-angle bending piece (314).

5. The turntable bending machine based on FPC flexible circuit board according to claim 4 is characterized in that: The front end surface where the first angle bending piece (313), the second angle bending piece (323) and the fixed angle bending piece (314) are located is provided with an embedding groove, and a buffer piece (303) is embedded in the embedding groove. When bending, the buffer piece (303) contacts the surface of the flexible circuit board.

6. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: A transverse groove (3131) structure is arranged at the top where the first angle bending piece (313) is located, and an output motor (314) is arranged at the top of the first angle bending piece (313), and the output end of the output motor (314) is arranged as a T-block (3141), and the T-block (3141) is embeddedly connected with the groove (3131).

7. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: A rotating shaft (22) is arranged in the middle of the rotating disk (2), and an outwardly extending support arm (221) extends from the rotating shaft (22), and the support arm (221) is used to press the flexible circuit board component carried on the rotating disk (2).

8. The turntable bending machine based on FPC flexible circuit board according to claim 7 is characterized in that: The lower end surface of the support arm (221) is arranged as a contact block (2211), and the contact surface between the contact block (2211) and the upper surface where the flexible circuit board component is located is a planar structure.

9. The turntable bending machine based on FPC flexible circuit board according to claim 1 is characterized in that: The bearing assembly (23) is embedded in the surface where the turntable (2) is located. The bearing assembly (23) is composed of a plurality of angled cavity blocks (231), and the angled cavity blocks (231) are arranged at the bottom and the side. The angled cavity blocks (231) arranged at the side are also provided with micro-driving components (232) in the horizontal direction. The micro-driving components (232) drive the angled cavity blocks (231) to move in the horizontal direction, thereby forming a wrapping and pressing on the periphery of the flexible circuit board component. The angled cavity blocks (231) located at the bottom form a support for the bottom of the flexible circuit board component.

10. The turntable bending machine based on FPC flexible circuit board according to claim 1, characterized in that: The first angle bending piece (313) and the second angle bending piece (323) have the same structure.

Images