Jig for assisting in bending FPC and method for bending FPC

Abstract

The invention discloses a jig for assisting in bending an FPC. The mold comprises a substrate, a main positioning groove for positioning a flatly unfolded FPC is provided on the substrate, the contour of the main positioning groove matches the outer shape of the flatly unfolded FPC, a secondary positioning groove for positioning a bent portion after bending is provided on the substrate, the secondary positioning groove is communicated with the main positioning groove, the contour of the secondary positioning groove matches the outer shape of the bent portion, the substrate is provided with an air avoidance groove at the bending position of the FPC, the bottom of the air avoidance groove is flush with the bottom of the main positioning groove, and a crease punching groove is provided at the bottom of the air avoidance groove for a punch to be inserted therein so as to punch out a crease on the FPC; it can ensure that the angle of the FPC after bending meets the design requirements; the invention also discloses a method for bending an FPC, comprising loading the FPC, pasting double-sided tape, bending, hot pressing and testing, so as to quickly bend the FPC and quickly realize the production operation, so that the products produced can meet the design requirements, have a high pass rate and will not rebound.

Description

[Technical field]

[0001] The present invention relates to a jig for assisting in bending an FPC, and also relates to a method for bending an FPC. [Background technology]

[0002] Due to design requirements in the fields of notebooks, mobile phones, etc., it is necessary to bend the FPC at a certain angle and ensure the bending angle. The existing method of bending the FPC uses simple auxiliary tools, and the bent angle depends on the operator's level and is difficult to meet the design requirements. In addition, the FPC is prone to rebound after bending, which affects the subsequent assembly.

[0003] The present invention is proposed in view of the deficiencies in the prior art. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is to provide a jig for assisting in bending an FPC and a method for bending an FPC, so as to solve the shortcomings of the prior art in that when bending an FPC, the design requirements are difficult to meet after bending, the qualified rate is low, the FPC is prone to rebound after bending, and the subsequent assembly is affected.

[0005] In order to solve the above technical problems, the present invention provides a jig for assisting in bending an FPC, wherein the mold is used to assist in bending an FPC, the end of the FPC has a bending portion, and the mold includes a substrate, the substrate is provided with a main positioning groove for positioning the flatly unfolded FPC, the contour of the main positioning groove coincides with the outer shape of the flatly unfolded FPC, the substrate is provided with a secondary positioning groove for positioning the bent portion after bending, the secondary positioning groove is communicated with the main positioning groove, the contour of the secondary positioning groove coincides with the outer shape of the bent portion, the substrate is provided with an air avoidance groove at the bending position of the FPC, the bottom of the air avoidance groove is flush with the bottom of the main positioning groove, and the bottom of the air avoidance groove is provided with a crease mark groove for inserting a punch therein to punch out a crease on the FPC.

[0006] In the jig for assisting in bending the FPC as described above, the substrate is provided with an indicating structure for facilitating identification of the bending angle of the bending portion relative to the FPC.

[0007] As described above, the jig for assisting in bending FPC, the indication structure includes a reference guide line flush with the central axis of the folding groove, the substrate is provided with a bending guide line A on one side of the secondary positioning groove, and the substrate is provided with a bending guide line B on the other side of the secondary positioning groove.

[0008] As described above, the jig for assisting in bending FPC has a base plate with a marking symbol A for marking the angle between the base guide line and the bending guide line A, and a base plate with a marking symbol B for marking the angle between the base guide line and the bending guide line B.

[0009] As described above, in the jig for assisting in bending FPC, the bottom of the substrate is provided with a vacuum groove connected to a vacuum pumping device, and the bottom of the auxiliary positioning groove is provided with a plurality of adsorption holes communicating with the vacuum groove.

[0010] In the jig for assisting in bending the FPC as described above, the substrate is provided with a relief opening located on one side of the main positioning groove for inserting a finger to facilitate turning up the bent portion.

[0011] In the jig for assisting in bending the FPC as described above, the substrate is made of bakelite.

[0012] The present invention also provides a method for bending an FPC using the above-mentioned jig, which sequentially performs the following steps:

[0013] S01. Load the FPC and correctly place the FPC with silk-screen markings and no bends into the main positioning groove;

[0014] S02, press the crease line, use a punching machine to punch the crease line on the FPC, and ensure that the punching head can be accurately inserted into the crease groove and form the crease line on the FPC;

[0015] S03, paste double-sided tape on the bent area of ​​​​the FPC;

[0016] S04, bending, bending the FPC along the crease and positioning the bent portion in the secondary positioning groove;

[0017] S05, hot pressing, using a hot pressing table to hot press the bent FPC;

[0018] S06, testing, after taking out the FPC after heat pressing, testing is carried out, and the one that passes the test is the finished product.

[0019] In the method for bending the FPC as described above, in step S05, the temperature of the heat pressing is 55° C. to 65° C., the pressure of the heat pressing is 5 MPa to 10 MPa, and the duration of the heat pressing is 5S to 10S.

[0020] In the method for bending the FPC as described above, in step S05, a protective film is provided on the pressing plate of the hot pressing platform that is in direct contact with the FP and the mold.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The fixture of the present invention is provided with a main positioning groove for positioning the flatly unfolded FPC and a secondary positioning groove for positioning the bent portion after bending on the substrate. This design can ensure the positioning of the FPC before and after bending, and ensure that the angle of the FPC after bending meets the design requirements.

[0023] 2. A crease punching groove is provided at the bottom of the avoidance groove for the punch to be inserted into so as to punch out creases on the FPC. Creases can be punched out on the PFC through additional stamping equipment, which is convenient for workers to fold the PFC. It does not require high operating skills of workers, can greatly improve the qualified rate of FPC bending, and has a simple structure and low cost.

[0024] 3. By using the jig of the present invention, the operator can quickly determine whether the FPC meets the angle requirements after bending through the reference guide line, bending guide line A, and bending guide line B, thereby improving the pass rate.

[0025] 4. A plurality of adsorption holes connected to the vacuum groove are provided at the bottom of the auxiliary positioning groove, which can facilitate the positioning of the bent portion after the initial bending in the auxiliary positioning groove, facilitate the hot pressing process, and improve the qualified rate of the bent FPC.

[0026] 5. An escape hole is provided on the substrate and located on one side of the main positioning groove for fingers to be inserted to facilitate turning up the bent portion, which can facilitate workers to quickly turn up the FPC from the main positioning groove and improve production efficiency.

[0027] 6. The method for bending FPC of the present invention can quickly bend FPC by loading FPC, sticking double-sided tape, bending, hot pressing and testing, and can quickly realize production operation. The products produced can meet the design requirements, have a high pass rate, and can ensure that the flatness of the bent products meets the requirements and will not rebound.

Brief Description of the Drawings

[0028] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0029] Figure 1 It is a schematic diagram of the fixture structure in the present invention;

[0030] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the fixture in the present invention;

[0031] Figure 3 for Figure 2 An enlarged view of the portion marked A in FIG.

[0032] Figure 4 It is a schematic diagram of the structure of loading the FPC onto the fixture in the present invention;

[0033] Figure 5It is a structural schematic diagram of the present invention in which the bent portion of the FPC is bent and positioned in the auxiliary positioning groove;

[0034] Figure 6 A top view of an FPC with silk-screen markings and not bent in the present invention;

[0035] Figure 7 It is a schematic structural diagram of the finished product of the PFC bent in the present invention. [Specific implementation method]

[0036] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 7 As shown, the jig for assisting in bending FPC in this embodiment, the mold is used to assist in bending FPC100, the end of the FPC100 has a bending portion 101, the mold includes a substrate 1, the substrate 1 is provided with a main positioning groove 11 for positioning the flatly unfolded FPC100, the contour of the main positioning groove 11 coincides with the outer shape of the flatly unfolded FPC100, the substrate 1 is provided with a secondary positioning groove 12 for positioning the bending portion 101 after bending, the secondary positioning groove 12 is communicated with the main positioning groove 11, the contour of the secondary positioning groove 12 coincides with the outer shape of the bending portion 101, the substrate 1 is provided with an air avoidance groove 13 at the bending position of the FPC100, the bottom of the air avoidance groove 13 is flush with the bottom of the main positioning groove 11, and the bottom of the air avoidance groove 13 is provided with a crease mark groove 14 for inserting a punch therein to punch out a crease on the FPC100. The jig of the present invention is provided with a main positioning groove for positioning the flatly unfolded FPC and a secondary positioning groove for positioning the bent portion after bending on the substrate. This design can ensure the positioning of the FPC before and after bending, and ensure that the angle of the FPC after bending meets the design requirements. In addition, a crease punching groove is provided at the bottom of the avoidance groove for a punch to be inserted into so as to punch out a crease on the FPC. A crease can be punched out on the PFC through an additional stamping device, which is convenient for workers to fold the PFC. The operating level of the workers is not high, the qualified rate of FPC bending can be greatly improved, and the structure is simple and the cost is low.

[0038] Furthermore, in this embodiment, an indication structure 2 is provided on the substrate 1 to facilitate identification of the bending angle of the bending portion 101 relative to the FPC 100. The indication structure 2 includes a reference guide line 21 flush with the central axis of the folding groove 14. The substrate 1 is provided with a bending guide line A22 on one side of the secondary positioning groove 12, and the substrate 1 is provided with a bending guide line B23 on the other side of the secondary positioning groove 12. The operator can quickly determine whether the FPC meets the angle requirements after bending through the reference guide line, the bending guide line A, and the bending guide line B, thereby improving the qualified rate.

[0039] Furthermore, a marking symbol A24 for marking the angle between the reference guide line 21 and the bending guide line A22 is provided on the substrate 1, and a marking symbol B25 for marking the angle between the reference guide line 21 and the bending guide line B23 is provided on the substrate 1.

[0040] In order to facilitate the positioning of the bent portion after the initial bending in the auxiliary positioning groove 12 for the hot pressing process, a vacuum groove 15 connected to the vacuum extraction equipment is provided at the bottom of the substrate 1, and a plurality of adsorption holes 16 communicating with the vacuum groove 15 are provided at the bottom of the auxiliary positioning groove 12.

[0041] In order to facilitate workers to quickly flip up the FPC from the main positioning groove, a relief opening 17 is provided on the substrate 1 and located on one side of the main positioning groove 11 for a finger to be inserted into so as to flip up the bent portion 101 .

[0042] In this embodiment, the substrate 1 is made of bakelite, which has the advantages of low cost and good heat resistance.

[0043] A method for bending an FPC in this embodiment uses the above-mentioned jig for assisting in bending an FPC. In actual operation, the following steps are performed in sequence:

[0044] S01, loading the FPC, and correctly placing the FPC 100 with the silk-screened marking line 102 and not bent into the main positioning groove 11; in this step, the FPC with the silk-screened marking line 102 is used to facilitate the judgment of whether the crease is accurate during the punching, so as to improve the accuracy;

[0045] S02, punching crease lines, using a punching machine to punch crease lines on the FPC 100, it is necessary to ensure that the punching head can be accurately inserted into the punching crease groove 14, and form crease lines on the FPC 100;

[0046] S03, paste double-sided tape on the bending area of ​​FPC100, and when pasting double-sided tape, it is required that the double-sided tape is not exposed outside the overlapping area after the FPC is bent;

[0047] S04, bending, bending the FPC 100 along the crease, and positioning the bent portion 101 in the secondary positioning groove 12;

[0048] S05, heat pressing, using a heat pressing table to heat press the bent FPC100;

[0049] S06, testing, after taking out the FPC after heat pressing, testing is carried out, and the one that passes the test is the finished product.

[0050] Further, in step S05, the temperature of the hot pressing is 55°C to 65°C, the pressure of the hot pressing is 5Mpa to 10Mpa, and the duration of the hot pressing is 5S to 10S; preferably, the temperature of the hot pressing is 60°C, the pressure of the hot pressing is 8Mpa, and the duration of the hot pressing is 5S. In this case, the pressed PFC has high flatness and is not easy to rebound.

[0051] In order to prevent the pressing plate in direct contact with the FPC and the mold from scratching the FPC, a protective film is provided on the pressing plate in direct contact with the FPC and the mold during the process in step S05.

[0052] The method for bending an FPC of the present invention can quickly bend the FPC by loading the FPC, attaching double-sided adhesive, bending, hot pressing and testing, and can quickly realize production operations. The produced products can meet the design requirements with a high pass rate, and can ensure that the flatness of the bent products meets the requirements and will not rebound.

[0053] The above examples are only used to further illustrate the technical content of the present invention, so that readers can understand it more easily, but they do not mean that the implementation of the present invention is limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A jig for assisting in bending an FPC, the jig being used for assisting in bending an FPC (100), the end of the FPC (100) having a bending portion (101), characterized in that: The fixture comprises a substrate (1), the substrate (1) being provided with a main positioning groove (11) for positioning a flatly unfolded FPC (100), the contour of the main positioning groove (11) being consistent with the outer shape of the flatly unfolded FPC (100), the substrate (1) being provided with a secondary positioning groove (12) for positioning a bent portion (101) after bending, the secondary positioning groove (12) being communicated with the main positioning groove (11), the contour of the secondary positioning groove (12) being consistent with the outer shape of the bent portion (101), the substrate (1) being provided with a clearance groove (13) at a position where the FPC (100) is bent, the bottom of the clearance groove (13) being flush with the bottom of the main positioning groove (11), and the bottom of the clearance groove (13) being provided with a crease-punching groove (14) for a punch to be inserted therein so as to punch out a crease on the FPC (100); The substrate (1) is provided with an indication structure (2) for facilitating identification of the bending angle of the bending portion (101) relative to the FPC (100); The indicating structure (2) comprises a reference guide line (21) flush with the central axis of the folding groove (14); the substrate (1) is provided with a bending guide line A (22) on one side of the secondary positioning groove (12); and the substrate (1) is provided with a bending guide line B (23) on the other side of the secondary positioning groove (12); The bottom of the substrate (1) is provided with a vacuum groove (15) connected to a vacuum extraction device, and the bottom of the auxiliary positioning groove (12) is provided with a plurality of adsorption holes (16) which are in communication with the vacuum groove (15).

2. The jig for assisting in bending FPC according to claim 1, characterized in that The substrate (1) is provided with a marking symbol A (24) for marking the angle between the reference guide line (21) and the bending guide line A (22), and the substrate (1) is provided with a marking symbol B (25) for marking the angle between the reference guide line (21) and the bending guide line B (23).

3. The jig for assisting in bending FPC according to claim 1, characterized in that The base plate (1) is provided with an escape opening (17) located on one side of the main positioning groove (11) for a finger to be inserted into so as to turn up the bent portion (101).

4. The jig for assisting in bending FPC according to claim 1, characterized in that The base plate (1) is made of bakelite.

5. A method for bending an FPC using the jig according to any one of claims 1 to 4, characterized in that Follow these steps in order: S01, loading the FPC, correctly placing the FPC (100) with silk-screen markings (102) and not bent into the main positioning groove (11); S02, punching crease lines on the FPC (100) using a punching machine; S03, stick double-sided tape on the bent area of ​​the FPC (100); S04, bending, bending the FPC (100) along the fold line, and positioning the bent portion (101) in the secondary positioning groove (12); S05, heat pressing, using a heat pressing table to heat press the bent FPC (100); S06, testing, after taking out the FPC (100) that has been subjected to heat pressing, testing is performed, and those that pass the test are considered finished products.

6. The method for bending an FPC according to claim 5, characterized in that In step S05, the temperature of the hot pressing is 55°C to 65°C, the pressure of the hot pressing is 5Mpa to 10Mpa, and the duration of the hot pressing is 5S to 10S.

7. The method for bending an FPC according to claim 5, characterized in that In step S05, a protective film is provided on a pressing plate that is in direct contact with the hot pressing platform, the FPC (100) and the jig.

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