Flexible circuit board cutting device

Abstract

The utility model discloses a flexible circuit board cutting device which comprises a template, the front face and the back face of the template are planes, elastic layers are installed on the front face of the template in a stacked mode, and the elastic layers can be compressed under the action of external force and reset automatically when the external force disappears. At least two cutter groove groups are symmetrically formed in the template and the elastic layer, and each cutter groove group comprises a plurality of cutter grooves which are arranged side by side in a surrounding manner; the lower end of the cutting knife is mounted in the knife groove of the template, and the upper end of the cutting knife vertically extends into and is hidden in the knife groove of the elastic layer; a detachable bottom plate is mounted on the back surface of the template in a laminated manner; the positioning columns are regularly arranged and used for being connected with positioning holes in the flexible circuit board in a sleeved mode for limiting, the lower ends of the positioning columns are fixed in the template, and the upper ends of the positioning columns perpendicularly stretch out to the top of the elastic layer; the device is small in size, convenient to move and store, low in production cost, simple in structure and convenient to maintain and use.

Description

TECHNICAL FIELD

[0001] The utility model relates to flexible circuit board technical field, concretely relates to a flexible circuit board cutting device. BACKGROUND

[0002] Flexible Printed Circuit Board (FPCB) is a kind of flexible, foldable electronic circuit board made of flexible substrate (such as polyimide PI or polyester PET), and is widely used in modern electronic equipment. Compared with traditional rigid PCB, FPCB has the characteristics of lightness, thinness, bending resistance, space utilization, etc., and can adapt to complex three-dimensional layout requirements.

[0003] In order to improve production efficiency, a whole large flexible circuit board is first made in the production process, which includes a plurality of small flexible circuit boards. Then the plurality of independent units are separated out by cutting equipment.

[0004] The utility model with the publication number CN210147260U discloses a kind of circuit board laser cutting machine. It utilizes feeding roller to clamp and send flexible circuit board, guarantees the transmission power of entire flexible circuit board;Secondly, the movement direction of flexible circuit board output by feeding roller is limited using conveying track, and the stability of flexible circuit board movement can be improved, the swing of flexible circuit board can be prevented.In addition, the working position on conveying track is matched with laser cutting group, guarantees the cutting quality of entire flexible circuit board.

[0005] The laser cutting machine has the following disadvantages: (1) high temperature can cause carbonization or yellowing of polyimide substrate, and microcracks may be formed on the edge. (2) additional plasma cleaning is required to remove residual carbon, increasing process cost. (3) the unit price of high-precision optical fiber / ultraviolet laser equipment is more than 2 million yuan, and the optical lens group needs to be calibrated regularly, which is costly. (4) high requirements for operators, who need to master the matching of laser parameters and materials. (5) special substrate containing fluorine / ceramic filler may reflect laser, which requires custom wavelength. UTILITY MODEL CONTENT

[0006] In order to at least overcome one of the technical problems existing in the prior art, the utility model provides a flexible circuit board cutting device; it is small in size, convenient to move and store, low in production cost, simple in structure, easy to maintain and convenient to use.

[0007] The utility model relates to a flexible circuit board cutting device, including template, the front and back of template are plane, the front of template laminatedly installed has elasticity layer, can compress under the action of external force and automatically reset when the external force disappears, at least two groups of knife slot groups are symmetrically set up on the template and elasticity layer, each knife slot group includes a plurality of side -by -side knife slots, the lower end of cutting knife is installed in the knife slot of template, the upper end of cutting knife is vertically inserted and hides in the knife slot of elasticity layer, the detachable bottom plate is installed on the back of template, still include a plurality of regular set positioning column, for with the positioning hole on the flexible circuit board sleeve limit, the lower end of positioning column is fixed in the template, and the upper end of positioning column is vertically extended to the top of elasticity layer.

[0008] In some embodiments, the elastic layer is fixed to the front of the template by an adhesive layer, and the elastic layer is made of silicone rubber, polyurethane elastomer or sponge.

[0009] In some embodiments, the bottom plate is threadedly connected to the template by a plurality of regularly distributed fasteners, and the bottom plate can limit the downward movement of the cutting knife.

[0010] In some embodiments, the knife slot is a closed rectangle, a ring or a special shape, and the cutting knife is arranged along the shape of the knife slot, and the inclination angle of the cutting edge of the cutting knife is 30-45 degrees.

[0011] In some embodiments, the positioning column is a metal cylinder, and the top of the positioning column is semicircular.

[0012] Additional aspects and advantages of the utility model will be further given in the following description, some of which will become apparent from the following description or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0014] Figure 1 is the cross-sectional structure schematic view of the application;

[0015] Figure 2 is the split structure schematic view of the application;

[0016] Figure 3 is the overhead structure schematic view of the application;

[0017] Figure 4 is the overhead structure schematic view of the application;

[0018] Figure 5 is the overhead structure schematic view of the application after removing the bottom plate.

[0019] Reference signs:

[0020] Template 1, elastic layer 2, knife slot group 3, knife slot 300, cutting knife 4, bottom plate

[0021] 5, positioning column 6, adhesive layer 7, fastener 8. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0023] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application to a specific orientation, a specific orientation and operation, and therefore cannot be understood as limiting the present application.

[0024] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0025] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Reference Figures 1-5A flexible circuit board cutting device, comprising a template 1, the front and back of the template 1 are both flat, the front of the template 1 is laminated with an elastic layer 2, which can be compressed under external force and automatically reset when the external force disappears; two sets of knife slot groups 3 are symmetrically provided on the template 1 and the elastic layer 2, each knife slot group 3 comprises a plurality of knife slots 300 arranged side by side; the lower end of a cutting knife 4 is installed in the knife slot 300 of the template 1, the upper end of the cutting knife 4 vertically extends into and hides in the knife slot 300 of the elastic layer 2, the cutting knife 4 can be hard alloy (tungsten steel, such as YG8 / YG15) or powder high-speed steel (such as ASP-23 / ASP30); a detachable bottom plate 5 is laminated on the back of the template 1; four regularly arranged positioning columns 6 are provided, two of which are symmetrically distributed on the periphery of the two sets of knife slot groups 3; the lower end of the positioning column 6 is fixed in the template 1, and the upper end of the positioning column 6 vertically extends to the top of the elastic layer 2.

[0027] In use, the cutting device is placed on the workbench, the template 1 is generally rectangular or square, the volume is small, and the length and width can be 40-60 cm; the flexible circuit board is laid flat on the elastic layer 2, and the four positioning holes on the flexible circuit board are correspondingly sleeved on the four positioning columns 6; the electric or pneumatic device is started to vertically press the pressing plate on the flexible circuit board, in the process of pressing, the elastic layer 2 is compressed, each cutting knife 4 extends out of the elastic layer 2, and the area surrounded by each cutting knife 4 is the cutting area, so that a large flexible circuit board is cut into a plurality of small flexible circuit boards; the pressing plate vertically rises, the elastic layer 2 automatically resets to the initial state, then the plurality of small flexible circuit boards are taken out, and the next large flexible circuit board is installed for cutting; the application has the advantages of small volume, convenient movement and storage, low production cost, simple structure, convenient maintenance and use; it is especially suitable for processing and production of small and medium-sized flexible circuit boards, and is flexible and fast.

[0028] In some embodiments, the elastic layer 2 is fixed to the front of the template 1 through an adhesive layer 7, which is simple and convenient; the elastic layer 2 can be silicone rubber, polyurethane elastomer or sponge; the adhesive layer 7 can be silicone pressure-sensitive adhesive, polyurethane reactive adhesive or acrylate adhesive.

[0029] In some embodiments, the bottom plate 5 and the template 1 are threadedly connected through four regularly distributed fasteners 8, the bottom plate 5 can limit the downward movement of the cutting knife 4, and the structure is more stable; the fastener 8 can be a screw, a bolt or a screw, etc., which is convenient to disassemble and install.

[0030] In some embodiments, the knife slot 300 is a closed rectangle, a ring or a special shape, which is consistent with the flexible circuit board unit to be cut; the cutting knife 4 is arranged along the shape of the knife slot 300, and the inclination angle of the cutting edge of the cutting knife 4 is 30-45 degrees, which can more smoothly cut.

[0031] In some embodiments, the positioning column 6 is a 304 stainless steel cylinder, and the top is a semicircle, which is convenient for sleeving and limiting with the positioning hole on the flexible circuit board. The semicircular structure is relatively smooth and is not easy to scratch the human body or the workpiece.

[0032] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present application. Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A flexible wiring board cutting apparatus comprising a template, characterized by: The front and back of the template are planes, the front of the template is stacked with an elastic layer, which can be compressed under external force and automatically reset when the external force disappears; at least two groups of knife grooves are symmetrically provided on the template and the elastic layer, each group of knife grooves includes a plurality of knife grooves arranged side by side; the lower end of the cutting knife is installed in the knife groove of the template, and the upper end of the cutting knife vertically extends into and is hidden in the knife groove of the elastic layer; a detachable bottom plate is stacked on the back of the template; a plurality of regularly arranged positioning columns are used for sleeving and limiting with the positioning holes on the flexible circuit board, the lower end of the positioning column is fixed in the template, and the upper end of the positioning column vertically extends to the top of the elastic layer.

2. The flexible wiring board cutting apparatus according to claim 1, wherein: The elastic layer is fixed to the front of the template through an adhesive layer, and the elastic layer is made of silicone rubber, polyurethane elastomer or sponge.

3. The flexible wiring board cutting apparatus according to claim 1 or 2, wherein: The bottom plate and the template are threadedly connected through a plurality of regularly distributed fasteners, and the bottom plate can limit the downward movement of the cutting knife.

4. The flexible wiring board cutting apparatus according to claim 3, wherein the cutting device is provided with a cutting blade which is capable of cutting the flexible wiring board. The knife groove is a closed rectangle, a ring or a special shape, and the cutting knife is arranged along the shape of the knife groove, and the inclination angle of the cutting edge of the cutting knife is 30-45 degrees.

5. The flexible wiring board cutting apparatus according to claim 4, wherein the cutting device is provided with a cutting blade which is capable of cutting the flexible wiring board. The positioning column is a metal cylinder, and the top thereof is semicircular.

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