Pressing tool for rigid-flex boards with unequal lengths

Abstract

The utility model relates to the technical field of printed circuit boards, and discloses a pressing tool for rigid-flex boards with unequal lengths, which is characterized in that the rigid-flex boards with the unequal lengths are placed on a base, the rigid-flex boards with the unequal lengths are positioned right below a pressing plate, and a flexible unit is positioned right below a window; and the pressing plate is controlled to move towards the base, and the rigid pressing unit is pressed according to the preset pressure. As the window is arranged at the position, corresponding to the middle flexible unit of the rigid-flex board with the unequal length, on the pressing plate, the flexible unit cannot be extruded in the pressing process, the flexible unit is not stressed in the pressing process, the bending characteristic of the rigid-flex board with the unequal length can be effectively kept, and the service life of the rigid-flex board is prolonged. Therefore, the fracture problem caused by local bending in the pressing process due to the equal flexible length is avoided, and the cost caused by manufacturing a steel mold is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to printed circuit board technical field discloses a kind of pressing tool for unequal length rigid-flex board. BACKGROUND

[0002] Rigid-flex printed board has the function of rigid printed board and the advantage of flexible printed board, and is widely used in various electronic products. Rigid-flex printed board can improve connection reliability, reduce weight and size, and is often used in aircraft and medical equipment.

[0003] In actual use, although rigid-flex printed board has good bending performance, the flexible part has a structure feature of multiple layers with equal length, and the flexible part still has the risk of breaking after long-term bending, resulting in product scrap. Therefore, the application of unequal length rigid-flex board solves the problem of breakage caused by equal length of flexible part during long-term bending. However, the pressing of unequal length rigid-flex board becomes a difficult point in the entire processing, and developing a pressing method for unequal length rigid-flex board becomes a technical problem to be solved. SUMMARY

[0004] The utility model aims at providing a kind of pressing tool for unequal length rigid-flex board, which can avoid the breakage problem caused by equal length of flexible part during pressing process, and save the cost problem caused by steel mold production.

[0005] To achieve the above technical effects, the utility model adopts the technical scheme of:

[0006] A kind of pressing tool for unequal length rigid-flex board, comprising:

[0007] A base for placing unequal length rigid-flex board, the unequal length rigid-flex board includes a middle flexible unit and rigid pressing units at both ends of the flexible unit.

[0008] A pressing plate for applying pressure to the rigid pressing units, and the pressing plate is provided with a window accommodating the flexible unit at the corresponding position of the flexible unit.

[0009] Further, the rigid pressing unit includes a plurality of stacked PCB substrates, and at least one flexible substrate is pressed between two adjacent PCB substrates.

[0010] Further, a rivet and a hole are provided between two adjacent PCB substrates.

[0011] Further, a semi-cured sheet is provided between PCB substrates, between a PCB substrate and a flexible substrate, or between flexible substrates.

[0012] Further, a socket is arranged on the base, a guide rod is arranged in the socket, and a guide hole matched with the guide rod is arranged on the pressing plate.

[0013] Further, a positioning hole through which the guide rod passes is arranged on the PCB substrate and the flexible substrate at a position corresponding to the guide rod.

[0014] Further, the pressing plate is mounted on the telescopic section of the hydraulic driving mechanism.

[0015] Compared with the prior art, the utility model has the beneficial effects that: the utility model discloses a window is arranged on the position corresponding to the middle flexible unit of the unequal-length rigid-flexible plate, so that the flexible unit is not extruded during the pressing process, and the force on the flexible unit is reduced during the pressing process, so that the bending characteristics of the unequal-length rigid-flexible plate can be effectively maintained, and the problem of breakage caused by local bending during the pressing process of the flexible plate with equal length is avoided, and the cost problem caused by the production of a steel mold is saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structure schematic view of the pressing tool for the unequal-length rigid-flexible plate in the embodiment.

[0017] Fig. 2 It is a structure schematic view of the pressing plate in the embodiment.

[0018] Fig. 3 It is a structure schematic view of the unequal-length rigid-flexible plate in the embodiment.

[0019] Wherein, 1, base; 2, flexible unit; 3, rigid pressing unit; 4, pressing plate; 5, window; 6, rivet; 7, pin hole; 8, guide rod; 9, guide hole; 10, positioning hole. DETAILED DESCRIPTION

[0020] The utility model will be further described in detail in combination with the embodiments and drawings. However, this should not be understood as the range of the above-mentioned subject matter of the utility model being limited to the following embodiments, and any technology realized based on the content of the utility model belongs to the range of the utility model.

[0021] EMBODIMENT

[0022] Referring to Figs. 1-3 A pressing tool for an unequal-length rigid-flexible plate, comprising:

[0023] Base 1, the base 1 is used to place the unequal-length rigid-flexible plate, and the unequal-length rigid-flexible plate comprises a middle flexible unit 2 and rigid pressing units 3 located at both ends of the flexible unit 2.

[0024] A pressing plate 4 is arranged to apply pressure to the rigid pressing unit 3, and the pressing plate 4 is provided with a window 5 corresponding to the flexible unit 2.

[0025] In the embodiment, the rigid-flexible plate is placed on the base 1, and the rigid-flexible plate is located directly below the pressing plate 4 and the flexible unit 2 is located directly below the window. The pressing plate 4 is controlled to move towards the base 1, and the rigid pressing unit 3 is pressed according to the preset pressure. Because the window 5 is arranged on the pressing plate 4 corresponding to the middle part of the flexible unit 2 of the rigid-flexible plate, the flexible unit 2 is not extruded during the pressing process, and the flexible unit 2 is not stressed during the pressing process. The bending characteristics of the rigid-flexible plate can be effectively maintained, thereby avoiding the problem of fracture caused by local bending during the pressing process when the flexible lengths are equal, and the cost problem caused by the production of a steel mold is saved.

[0026] In the embodiment, the base 1 is provided with a insertion hole, and a guide rod 8 is inserted in the insertion hole. The pressing plate 4 is provided with a guide hole 9 matched with the guide rod 8. The guide rod 8 is fixed by the insertion rod, and then the guide rod 8 is matched with the guide hole 9 to guide the pressing plate 4, thereby avoiding the problem that the pressing plate 4 deviates during the pressing process and affects the pressing effect of the rigid-flexible plate.

[0027] The rigid pressing unit 3 in the embodiment includes a plurality of stacked PCB substrates, and at least one flexible substrate is pressed between adjacent two layers of PCB substrates.

[0028] In the embodiment, the adjacent two PCB substrates are provided with a rivet 6 and a rivet hole 7 matched with each other. The rigid-flexible plate can be stacked by the rivet 6 through the rivet hole 7 in advance, and then the guide rod 8 is inserted through the guide hole 9 of the stacked rigid-flexible plate to fix the rigid-flexible plate between the base 1 and the pressing plate 4. The rivet 6 and the rivet hole 7 are used to fix the two PCB substrates and the flexible substrate between the two PCB substrates, thereby improving the overall stability of the rigid-flexible printed board structure.

[0029] In the embodiment, a prepreg is arranged between the PCB substrate and the PCB substrate, between the PCB substrate and the flexible substrate, or between the flexible substrate and the flexible substrate, and a low-flow prepreg is used to realize the pressing and bonding between the layers.

[0030] In the embodiment, the pressing plate 4 is installed on the telescopic section of the hydraulic driving mechanism, and the pressing plate 4 presses the rigid-flexible plate by the movement of the hydraulic driving mechanism.

[0031] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pressing fixture for rigid-flexible plates of unequal length, characterized in that, include: The base (1) is used to place unequal-length rigid-flex plate, which includes a central flexible unit (2) and rigid pressing units (3) located at both ends of the flexible unit (2). Pressure plate (4) is used to apply pressure to rigid pressing unit (3), and pressure plate (4) is provided with opening (5) to accommodate flexible unit (2) at the position corresponding to flexible unit (2).

2. The pressing fixture for unequal-length rigid-flexible plates according to claim 1, characterized in that, The rigid pressing unit (3) includes multiple stacked PCB substrates, with at least one flexible substrate pressed between adjacent PCB substrates.

3. The pressing fixture for unequal-length rigid-flexible plates according to claim 2, characterized in that, Rivets (6) and rivet holes (7) are provided between two adjacent PCB bases.

4. The pressing fixture for unequal-length rigid-flexible plates according to claim 2, characterized in that, Prepregs for use and adhesion are provided between PCB substrates, between PCB substrates and flexible substrates, or between flexible substrates.

5. The pressing fixture for unequal-length rigid-flexible plates according to any one of claims 1-4, characterized in that, The base (1) is provided with an insertion hole, and a guide rod (8) is inserted into the insertion hole. The pressure plate (4) is provided with a guide hole (9) that cooperates with the guide rod (8).

6. The pressing fixture for unequal-length rigid-flexible plates according to claim 2, characterized in that, The PCB substrate and the flexible substrate are provided with positioning holes (10) at positions corresponding to the guide rod (8) for the guide rod (8) to pass through.

7. The pressing fixture for unequal-length rigid-flexible plates according to claim 1, characterized in that, The pressure plate (4) is installed on the telescopic section of the hydraulic drive mechanism.

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