Mold for super long film

Abstract

The utility model discloses a mould suitable for super long film, can cooperate the exposure of super long film to the realization of conventional exposure machine, improves exposure precision, avoids wrong layer and open circuit. The mould suitable for super long film includes bottom plate and at least two pieces of full black film piece, the upper surface of bottom plate is provided with the positioning slot for with product size match, the connecting end of full black film piece is articulated cooperation in one side of positioning slot, and the movable end between the other side of positioning slot is provided with detachable connecting mechanism, is used for the movable fixed movable end of full black film piece, under the state that the movable end of each full black film piece is connected in the other side of positioning slot, the adjacent face of adjacent full black film piece is pasted together.

Description

Technical Field

[0001] This utility model belongs to the field of FPC production technology, and specifically refers to a mold suitable for ultra-long films. Background Technology

[0002] Film exposure is a key process in precision manufacturing such as printing plate making and PCBs. It refers to the process of transferring the graphic information on the film (film) to photosensitive materials (such as printing plates and PCB solder resist inks) by irradiation with ultraviolet light or laser.

[0003] Currently, the film exposure length for FPC products is typically 800mm. However, in the new energy market, many FPCs (flexible printed circuit boards) exceed 800mm in length. To produce these longer products, film splicing technology is essential. However, extended composite films are prone to precision deviations during splicing, leading to misalignment and open circuits, thus affecting product performance. Therefore, improvements are urgently needed.

[0004] The "segmented alignment exposure machine" uses multiple CCD cameras to calibrate the positional deviation of the long substrate in real time, controlling the exposure accuracy to ±0.05mm and effectively avoiding the cumulative error of a single exposure segment. However, the equipment is expensive, putting considerable pressure on the company's finances. Utility Model Content

[0005] The main purpose of this invention is to provide a mold suitable for ultra-long films, solve the problems existing in the prior art, and enable the exposure of ultra-long films with conventional exposure machines, thereby improving exposure accuracy and avoiding misalignment and open circuits.

[0006] To achieve the above objectives, the solution of this utility model is: A mold suitable for extra-long films includes a base plate and at least two all-black film sheets; the upper surface of the base plate is provided with a positioning groove for matching the product size; the connecting end of each all-black film sheet is pivotally connected to one side of the positioning groove, and a detachable connecting mechanism is provided between its movable end and the other side of the positioning groove for movably fixing the movable end of the all-black film sheet; when the movable ends of each all-black film sheet are connected to the other side of the positioning groove, the adjacent surfaces of adjacent all-black film sheets are pressed together.

[0007] The detachable connection mechanism includes a positioning protrusion disposed on the other side of the positioning groove, and a positioning hole disposed on the movable end of the all-black film and matching the size of the positioning protrusion.

[0008] The length of the all-black film is set to 700mm per segment.

[0009] A number of pivot seats are provided on one side of the positioning groove, and the fixed end of the all-black film is connected to the pivot seat through a rotating shaft.

[0010] After adopting the above technical solution, the present invention has the following technical effects: This invention enables segmented exposure using a mold with multiple black film sheets 200. It allows for stable and precise segmented exposure of ultra-long films on conventional exposure machines, eliminating the need to purchase expensive "segmented alignment exposure machines." This improves exposure accuracy, avoids misalignment and open circuits, reduces production costs, and increases production efficiency. Attached Figure Description

[0011] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0012] Figure 2 This is a schematic diagram of the product film of a specific embodiment of this utility model.

[0013] Explanation of icon numbers: 100 - Base plate; 101 - Positioning groove; 102 - Positioning protrusion; 103 - Pivot seat; 200 - All-black film; 201 - Positioning hole; 300 - Product film; 301 - Alignment pattern; 302 - Optical aperture; 303 - Expansion / contraction control scale; 304 - Positioning hole. Detailed Implementation

[0014] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0015] refer to Figure 1 As shown, this utility model discloses a mold suitable for ultra-long films, including a base plate 100 and at least two all-black film sheets 200; The upper surface of the base plate 100 is provided with a positioning groove 101 for matching the product size, so that the product will not be displaced after being placed in the positioning groove 101, thus achieving precise placement in the mold. The connecting end of the all-black film 200 is pivotally fitted to one side of the positioning groove 101, and a detachable connecting mechanism is provided between its movable end and the other side of the positioning groove 101 for movably fixing the movable end of the all-black film 200. With the movable ends of each all-black film 200 connected to the other side of the positioning groove 101, the adjacent surfaces of adjacent all-black film 200 are pressed together.

[0016] Through the above solution, this utility model can achieve segmented exposure operation using a mold with multiple all-black film sheets 200, and can stably and accurately perform segmented exposure of ultra-long film on a conventional exposure machine; specifically, this utility model can achieve the following technical effects: First, because the base plate 100 is equipped with a positioning groove 101 that matches the product size, the product can be accurately placed into the positioning groove 101 without displacement. This ensures the precise placement of the product in the mold and provides a stable foundation for the subsequent exposure process.

[0017] Secondly, one end of the all-black film 200 is pivotally connected to one side of the positioning groove 101, while the other end is movably fixed to the other side of the positioning groove 101 via a detachable connecting mechanism. This design allows the all-black film 200 to be easily opened and closed, facilitating the insertion and removal of products. Simultaneously, when the movable ends of each all-black film 200 are connected to the other side of the positioning groove 101, the adjacent surfaces of adjacent all-black film 200s fit together, forming a continuous, seamless exposure surface. This avoids potential precision deviations that may occur during the docking process of extended composite films, effectively preventing misalignment and open circuits.

[0018] Finally, this mold can be used with conventional exposure machines, eliminating the need to purchase expensive "segmented alignment exposure machines," thus reducing production costs and improving production efficiency.

[0019] The following are specific embodiments of the present invention.

[0020] The aforementioned detachable connection mechanism includes a positioning protrusion 102 located on the other side of the positioning groove 101, and a positioning hole 201 located at the movable end of the all-black film 200 and matching the size of the positioning protrusion 102. Therefore, when it is necessary to fix the movable end of the all-black film 200 to the other side of the positioning groove 101, simply align the positioning hole 201 at the movable end of the all-black film 200 with the positioning protrusion 102 on the other side of the positioning groove 101 to achieve movable fixation. This detachable connection mechanism has a simple structure and is easy to operate, enabling rapid opening and closing of the all-black film 200, improving the convenience of production operations. Furthermore, the matching size of the positioning protrusion 102 and the positioning hole 201 ensures that the all-black film 200 will not shake or shift position when covering the product, accurately covering areas of the product that do not require exposure at the current stage, avoiding underexposure or overexposure in some areas, thus ensuring exposure accuracy and preventing problems such as misalignment and open circuits.

[0021] The length of the aforementioned all-black film 200 is set to 700mm per segment. When two all-black film 200s are used, it can handle ultra-long films greater than 700mm and less than 1400mm. Three films can handle a maximum length of 21000mm, and so on for more films.

[0022] A number of pivot seats 103 are provided on one side of the positioning groove 101. The fixed end of the all-black film 200 is rotatably engaged with the pivot seat 103 through a rotating shaft to realize the flexible flipping of the all-black film 200.

[0023] The aforementioned all-black film 200 is primarily made of polyester substrate, offering good dimensional stability and suitability for PCB applications. Its surface / separator layer typically uses PET or PE materials, and the emulsion layer contains silver halide photosensitive substances. The common thickness of the all-black film is 0.17mm (7mil), a standard specification for rigid films used in production.

[0024] In actual production, refer to Figure 2 As shown, alignment can be achieved by marking the product and the front and back film 300 with positioning marks (such as alignment marks 301). The optical aperture 302 between the front and back film 300 determines whether misalignment occurs between the upper and lower films. Simultaneously, several sets of expansion and contraction control scales 303 are provided on both the front and back film 300 to monitor their expansion and contraction. After both films cover the product according to the preset standard, the assembled product is combined with the mold of this invention through the positioning hole 304 to prevent misalignment before exposure.

[0025] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A mold suitable for ultra-long films, characterized in that: Includes the base plate and at least two pieces of all-black film; The upper surface of the base plate is provided with a positioning groove for matching the product size; The connecting end of the all-black film is pivotally connected to one side of the positioning groove, and a detachable connecting mechanism is provided between its movable end and the other side of the positioning groove for movably fixing the movable end of the all-black film. With the movable ends of each all-black film piece connected to the other side of the positioning groove, the adjacent surfaces of adjacent all-black film pieces are pressed together.

2. The mold suitable for ultra-long films as described in claim 1, characterized in that: The detachable connection mechanism includes a positioning protrusion disposed on the other side of the positioning groove, and a positioning hole disposed on the movable end of the all-black film and matching the size of the positioning protrusion.

3. The mold for ultra-long films as described in claim 1, characterized in that: The length of the all-black film is set to 700mm per segment.

4. The mold suitable for ultra-long films as described in claim 1, characterized in that: A number of pivot seats are provided on one side of the positioning groove, and the fixed end of the all-black film is connected to the pivot seat through a rotating shaft.

Images