Film tearing jig for flexible circuit board

Abstract

The utility model relates to the technical field of film tearing jigs, and discloses a film tearing jig for a flexible circuit board, which comprises a substrate, a bracket, a pressing piece and a transmission structure, a film tearing fixing area is arranged on the surface of one side of the substrate, and the bracket is fixedly arranged on one side of the substrate and is positioned at the edge of the film tearing fixing area; the press-fit part is movably installed on the support, the transmission structure is connected between the press-fit part and the support, the press-fit part has a separation state and a press-fit state, and the transmission structure is used for driving the press-fit part to be switched between the separation state and the press-fit state; in the separated state, the pressing piece and the surface of one side of the substrate are arranged in a spaced mode to form a pressing gap, and the edge of the flexible circuit board is inserted into the pressing gap. In the press fit state, the press fit piece is in extrusion fit with the surface of one side of the base plate. In the pressing state, the pressing piece can effectively fix the edge of the flexible circuit board, the release film can be pulled by two hands for balanced force separation, poor board wrinkling and abnormal expansion and shrinkage of the flexible circuit board are avoided, and the yield of film tearing operation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film tearing jigs, in particular to a film tearing jig for flexible circuit boards. Background Art

[0002] As flexible circuit boards (FPCBs) become increasingly thinner, some products reach thicknesses as low as 0.06mm. During FPCB production, a laminating machine adheres the cover film to the circuit substrate under a set temperature, pressure, and time, protecting the substrate from oxidation and providing electrical insulation. Due to the technical requirements of the laminating process, a release film is required to act as a buffer and adhesive barrier during the laminating process. However, after the high-temperature and high-pressure laminating process, adhesion may occur between the release film and the circuit substrate.

[0003] At present, the main method used is to tear off the release film manually, that is, one hand presses a small area of the flexible circuit board, and the other hand tears off a corner of the release film, and both hands use force to gradually separate the release film from the flexible circuit board.

[0004] However, in the process of manually tearing off the release film, since the hand-tearing force area is limited to a corner area of the flexible circuit board and the release film, it is easy to cause the flexible circuit board to have wrinkles and abnormal expansion and contraction, and the yield rate of the film tearing operation is low. Utility Model Content

[0005] The technical problem to be solved by the present invention is that since the hand-tearing force application area is limited to a corner area of the flexible circuit board and the release film, it is easy to cause the flexible circuit board to be wrinkled and abnormally expand and shrink, and the yield rate of the film tearing operation is low.

[0006] In order to solve the above technical problems, the present invention provides a technical solution for a film tearing fixture for flexible circuit boards:

[0007] The film tearing jig for flexible circuit boards includes a substrate, a bracket, a pressing part and a transmission structure. One side surface of the substrate has a film tearing fixing area. The bracket is fixedly arranged on one side of the substrate and is located at the edge of the film tearing fixing area.

[0008] The pressing piece is movably mounted on the bracket, the transmission structure is connected between the pressing piece and the bracket, the pressing piece has a separation state and a pressing state, and the transmission structure is used to drive the pressing piece to switch between the separation state and the pressing state;

[0009] In the separated state, the pressing piece is spaced apart from one side surface of the substrate to form a pressing gap for the edge of the flexible circuit board to be inserted therein; in the pressed state, the pressing piece is squeezed and fitted with one side surface of the substrate to fix the edge of the flexible circuit board.

[0010] Furthermore, it also includes a sliding plate, which is moved in a direction away from a side surface of the substrate and assembled on the bracket, and the pressing part is arranged on a side of the sliding plate corresponding to the substrate.

[0011] Furthermore, the bracket includes two side panels and a crossbeam fixedly connected between the two side panels. The two side panels are distributed in parallel and spaced apart and are respectively fixedly connected to the base plate. The crossbeam is arranged at the end of the side panel away from the base plate. The transmission structure is installed on the crossbeam, and the sliding plate is arranged at the gap between the crossbeam and the base plate.

[0012] Furthermore, a first guide column is provided between the crossbeam and the base plate, and the first guide column is extended in a direction away from a side surface of the base plate. A linear bearing is fixedly mounted on the sliding plate, and the first guide column is guided and matched with the linear bearing.

[0013] Furthermore, the transmission structure is a manual pressure rod structure, which includes a fixed seat, a handle and a transmission rod. The fixed seat is installed on the bracket, one end of the handle is hingedly connected to the fixed seat, and the transmission rod is connected between the handle and the pressing part.

[0014] Furthermore, a sleeve is provided on the fixing seat, the transmission rod is slidably inserted into the sleeve, and a connecting rod is hinged between the end of the transmission rod and the handle.

[0015] Furthermore, an elastic member is installed between the pressing member and the sliding plate, and the elastic force direction of the elastic member extends in a direction away from the side surface of the substrate.

[0016] Furthermore, a second guide post is provided on the side of the pressing part corresponding to the sliding plate, and the second guide post is extended in a direction away from the side surface of the substrate. A positioning sleeve is fixedly installed on the sliding plate, and the second guide post is guided and matched with the positioning sleeve.

[0017] Furthermore, the pressing piece is an elastic strip, and the length direction of the elastic strip is extended and arranged parallel to the edge of the film tearing fixing area.

[0018] Furthermore, a transverse rib and a longitudinal rib are fixedly mounted on the base plate. The transverse rib is located on a side of the pressing member away from the film tearing fixing area. The longitudinal rib and the transverse rib are arranged perpendicular to each other.

[0019] Compared with the prior art, the present invention's film-tearing jig for flexible circuit boards offers the following advantages: It utilizes a design comprising a substrate, a bracket, a pressing element, and a transmission structure. One side of the substrate has a film-tearing securing area, and the bracket is positioned on one side of the substrate, located at the edge of the film-tearing securing area. During use, the flexible circuit board, with the release film adhered to it, is first placed in the film-tearing securing area, aligning the edge of the flexible circuit board with the film-tearing securing area. The pressing element then compresses and secures the edge of the flexible circuit board, with the release film already torn from one side, ensuring that the entire edge of the flexible circuit board is securely positioned during manual film-tearing.

[0020] The pressing element is movably mounted on a bracket, with a transmission structure connected between the pressing element and the bracket. The pressing element has two states: a separated state and a pressed state. Before film removal, the transmission structure is operated to drive the pressing element away from the substrate, so that the pressing element and one side of the substrate are spaced apart and a pressing gap is formed, facilitating the insertion of the edge of the flexible circuit board. Once in place, the transmission structure is operated again to drive the pressing element toward the substrate until it reaches the pressed state. At this point, the pressing element and one side of the substrate are squeezed and fitted, effectively securing the edge of the flexible circuit board. The operator can pull the release film with both hands to separate it with a balanced force, thus avoiding wrinkles and abnormal expansion and contraction of the flexible circuit board, and improving the yield rate of the film removal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a film tearing fixture for a flexible circuit board according to an embodiment of the present invention;

[0022] Figure 2 This is a top view of a film tearing jig for a flexible circuit board according to an embodiment of the present invention;

[0023] Figure 3 This is a side view schematic diagram of a film tearing jig for a flexible circuit board in an embodiment of the present utility model;

[0024] Figure 4 This is a partial structural diagram of a film tearing jig for a flexible circuit board in an embodiment of the present utility model;

[0025] In the figure: 1-base plate, 10-film tearing fixing area, 11-transverse rib, 12-longitudinal rib, 2-bracket, 21-side plate, 22-crossbeam, 3-pressing part, 31-elastic part, 32-second guide column, 33-positioning sleeve, 4-transmission structure, 40-fixed seat, 41-handle, 42-transmission rod, 43-sleeve, 44-connecting rod, 5-sliding plate, 51-first guide column, 52-linear bearing. DETAILED DESCRIPTION

[0026] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like used in the present invention to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0029] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] like Figures 1 to 4 As shown, a film tearing jig for a flexible circuit board according to an embodiment of the present invention includes a substrate 1, a bracket 2, a pressing piece 3 and a transmission structure 4. One side surface of the substrate 1 has a film tearing fixing area 10, and the bracket 2 is fixedly arranged on one side of the substrate 1 and is located at the edge of the film tearing fixing area 10; the pressing piece 3 is movably installed on the bracket 2, and the transmission structure 4 is connected between the pressing piece 3 and the bracket 2.

[0031] The pressing piece 3 has a separated state and a pressed state, and the transmission structure 4 is used to drive the pressing piece 3 to switch between the separated state and the pressed state; in the separated state, the pressing piece 3 is spaced apart from one side surface of the substrate 1 to form a pressing gap for the edge of the flexible circuit board to be inserted into; in the pressed state, the pressing piece 3 is squeezed and fitted with one side surface of the substrate 1 to fix the edge of the flexible circuit board.

[0032] This film-tearing jig for flexible circuit boards utilizes a base plate 1, a bracket 2, a press member 3, and a transmission structure 4. One side of the base plate 1 has a film-tearing securing area 10, and the bracket 2 is positioned on one side of the base plate 1, at the edge of the film-tearing securing area 10. During use, the flexible circuit board, with the release film adhered to it, is first placed on the film-tearing securing area 10, aligning the edge of the flexible circuit board with the film-tearing securing area 10. The press member 3 then presses and secures the edge of the flexible circuit board, with the release film already torn from one side, ensuring that the entire edge of the flexible circuit board is securely positioned during manual film-tearing.

[0033] The pressing member 3 is movably mounted on the bracket 2, and the transmission structure 4 is connected between the pressing member 3 and the bracket 2. The pressing member 3 has a separated state and a pressed state. Before tearing the film, the transmission structure 4 is operated to drive the pressing member 3 away from the substrate 1, so that the pressing member 3 is spaced apart from the side surface of the substrate 1 and a pressing gap is formed, which facilitates the insertion of the edge of the flexible circuit board. After being placed in place, the transmission structure 4 is operated again to drive the pressing member 3 toward the substrate 1 until it reaches the pressed state. At this time, the pressing member 3 and the side surface of the substrate 1 are squeezed and matched, which can effectively fix the edge of the flexible circuit board. The staff can pull the release film with both hands to separate it with a balanced force, thereby avoiding wrinkles and abnormal expansion and contraction of the flexible circuit board, and improving the yield rate of the film tearing operation.

[0034] In this embodiment, the film tearing jig further comprises a sliding plate 5, which is mounted on the bracket 2 in a manner movable in a direction away from the surface of the substrate 1. The pressing member 3 is disposed on the side of the sliding plate 5 corresponding to the substrate 1. Using the sliding plate 5 as a mounting support for the pressing member 3 ensures the movement accuracy of the pressing member 3 and the reliability of the pressing fixation.

[0035] Specifically, the bracket 2 includes two side panels 21 and a crossbeam 22 fixedly connected between the two side panels 21. The two side panels 21 are spaced apart in parallel and are respectively fixedly connected to the base plate 1. The crossbeam 22 is arranged at the end of the side panel 21 away from the base plate 1. The transmission structure 4 is mounted on the crossbeam 22, and the sliding plate 5 is arranged in the gap between the crossbeam 22 and the base plate 1. A first guide post 51 is also provided between the crossbeam 22 and the base plate 1. The first guide post 51 is arranged in a direction away from the side surface of the base plate 1. A linear bearing 52 is fixedly mounted on the sliding plate 5, and the first guide post 51 and the linear bearing 52 are guided and cooperated.

[0036] Since the bracket 2 adopts the structural design of two side plates 21 and a cross beam 22, it can provide sufficient movement space for the sliding plate 5 and the pressing part 3. Moreover, combined with the guiding matching relationship between the first guide column 51 and the linear bearing 52, the movement accuracy and stability of the sliding plate 5 and the pressing part 3 are guaranteed, and the uniformity of the extrusion force generated between the pressing part 3 and the substrate 1 is further improved.

[0037] In this embodiment, the transmission structure 4 is a manual pressure rod structure, which includes a fixed base 40, a handle 41, and a transmission rod 42. The fixed base 40 is mounted on the bracket 2, one end of the handle 41 is hingedly connected to the fixed base 40, and the transmission rod 42 is connected between the handle 41 and the pressing member 3. Specifically, the fixed base 40 is further provided with a sleeve 43, and the transmission rod 42 is slidably inserted into the sleeve 43. A connecting rod 44 is also hingedly connected between the end of the transmission rod 42 and the handle 41.

[0038] When the handle 41 of the manual pressure lever structure is lifted, the connecting rod 44 drives the transmission rod 42 to move in a direction away from the side surface of the substrate 1, so that the sliding plate 5 and the pressing part 3 are separated from the substrate 1. When the handle 41 of the manual pressure lever structure is pressed down, the connecting rod 44 drives the transmission rod 42 to move in a direction toward the side surface of the substrate 1, so that the sliding plate 5 and the pressing part 3 are close to the substrate 1 and pressed. The manual pressure lever structure is simple and convenient to operate, and after pressing down, the hinged portion at one end of the handle 41, the hinged portion at the other end of the handle 41, the connecting rod 44, and the transmission rod 42 are in the same straight line, that is, at the dead point position, which ensures the reliability of the pressing fixation.

[0039] As a further preferred embodiment, an elastic member 31 is installed between the pressing member 3 and the sliding plate 5. The elastic force of the elastic member 31 extends in a direction away from the surface of the substrate 1. Furthermore, a second guide post 32 is provided on the side of the pressing member 3 corresponding to the sliding plate 5. The second guide post 32 extends in a direction away from the surface of the substrate 1. A positioning sleeve 33 is fixedly mounted on the sliding plate 5, and the second guide post 32 and the positioning sleeve 33 provide a guiding engagement. The design of the second guide post 32 and the positioning sleeve 33 allows the pressing member 3 to move relative to the sliding plate 5, and the elastic member 31 can generate an elastic compressive force during the pressing and securing.

[0040] Furthermore, the pressing element 3 is an elastic strip extending parallel to the edge of the film-tear fixing area 10. This elastic strip prevents damage caused by hard contact between the pressing element 3 and the flexible circuit board. A transverse rib 11 and a longitudinal rib 12 are fixedly mounted on the substrate 1. The transverse rib 11 is located on the side of the pressing element 3 away from the film-tear fixing area 10, while the longitudinal rib 12 is arranged perpendicular to the transverse rib 11. Together, the transverse and longitudinal ribs 11 and 12 define the transverse and longitudinal positions of the flexible circuit board, ensuring the accuracy of the film-tear operation.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. A film tearing jig for flexible circuit boards, characterized in that: The device comprises a base plate, a bracket, a pressing part and a transmission structure. One side surface of the base plate has a film-tearing fixing area. The bracket is fixedly arranged on one side of the base plate and is located at the edge of the film-tearing fixing area. The pressing piece is movably mounted on the bracket, the transmission structure is connected between the pressing piece and the bracket, the pressing piece has a separation state and a pressing state, and the transmission structure is used to drive the pressing piece to switch between the separation state and the pressing state; In the separated state, the pressing member is spaced apart from one side surface of the substrate to form a pressing gap for the edge of the flexible circuit board to be inserted into; In the pressed state, the pressing piece is pressed and matched with one side surface of the substrate to fix the edge of the flexible circuit board.

2. The film tearing jig for flexible circuit boards according to claim 1, characterized in that: It also includes a sliding plate, which is moved in a direction away from a side surface of the substrate and assembled on the bracket, and the pressing piece is arranged on a side of the sliding plate corresponding to the substrate.

3. The film tearing jig for flexible circuit boards according to claim 2, characterized in that: The bracket includes two side plates and a crossbeam fixedly connected between the two side plates. The two side plates are distributed in parallel and spaced apart and are respectively fixedly connected to the base plate. The crossbeam is arranged at the end of the side plate away from the base plate. The transmission structure is installed on the crossbeam, and the sliding plate is arranged in the gap between the crossbeam and the base plate.

4. The film tearing jig for flexible circuit boards according to claim 3, characterized in that: A first guide column is further provided between the crossbeam and the base plate. The first guide column is extended in a direction away from a side surface of the base plate. A linear bearing is fixedly mounted on the sliding plate, and the first guide column is guided and matched with the linear bearing.

5. The film tearing jig for flexible circuit boards according to claim 1, characterized in that: The transmission structure is a manual pressure rod structure, which includes a fixed seat, a handle and a transmission rod. The fixed seat is installed on the bracket, one end of the handle is hingedly connected to the fixed seat, and the transmission rod is connected between the handle and the pressing part.

6. The film tearing jig for flexible circuit boards according to claim 5, characterized in that: The fixing seat is further provided with a sleeve, the transmission rod is slidably inserted into the sleeve, and a connecting rod is hinged between the end of the transmission rod and the handle.

7. The film tearing jig for flexible circuit boards according to claim 2, wherein: An elastic member is installed between the pressing member and the sliding plate, and the elastic force direction of the elastic member extends in a direction away from a side surface of the base plate.

8. The film tearing jig for flexible circuit boards according to claim 7, wherein: The pressing part is further provided with a second guide post on one side corresponding to the sliding plate. The second guide post is extended in a direction away from the side surface of the base plate. A positioning sleeve is fixedly mounted on the sliding plate. The second guide post is guided and matched with the positioning sleeve.

9. The film tearing jig for flexible circuit boards according to claim 7, wherein: The pressing piece is an elastic strip, and the length direction of the elastic strip is extended and arranged parallel to the edge of the film tearing fixing area.

10. The film tearing jig for flexible circuit boards according to claim 1, wherein: A transverse rib and a longitudinal rib are fixedly mounted on the base plate. The transverse rib is located on a side of the pressing member away from the film tearing fixing area. The longitudinal rib and the transverse rib are arranged perpendicular to each other.

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