Film detection jig

Abstract

The utility model provides a film detection jig, which comprises an upper cover plate and a lower cover plate which are separated from each other, a plurality of first positioning pins and a plurality of second positioning pins are arranged on the lower cover plate, the first positioning pins and the second positioning pins are respectively arranged on two adjacent side edges of the lower cover plate, and straight lines where the first positioning pins and the second positioning pins are located are vertically intersected. The positions, corresponding to the first positioning pin and the second positioning pin, of the upper cover plate are provided with receding holes, and the upper cover plate is buckled on the first positioning pin and the second positioning pin in an inserted mode through the receding holes so that the upper cover plate can cover the lower cover plate. When the film detection jig is used for bearing the film to be detected, the flatness and no wrinkle of the film can be effectively ensured, and the film detection jig is convenient to use, high in positioning repeated precision and accurate in detection result.

Description

Technical Field

[0001] The utility model relates to the field of visual inspection, in particular to a film inspection jig. Background Art

[0002] Film, also known as film or negative, is a photosensitive material used in industries such as printing and photography. Film is typically made of a transparent plastic base coated with a photosensitive emulsion and covered with a thin layer of silver halide. Film plays a vital role in the printing industry. During the printing process, film is used as a medium for conveying image information. Designers create film with their designs or text. The images are then transferred to a printing plate through exposure and development steps. Finally, a printing press prints the images onto paper or other substrates. The use of film significantly improves printing efficiency and precision, ensuring the quality of printed products.

[0003] If there are defects in the pattern on the film, such as broken prints, pattern defects, pattern tilt, etc., it will directly affect the quality of subsequent printing. Therefore, it is crucial to perform appearance inspection on the completed film. Currently, CCD cameras are commonly used to scan and analyze the images of films directly placed flat on the loading platform. However, due to the soft texture of film and its easy wrinkling, it is impossible to ensure that the film is placed flat on the loading platform every time, nor can it be guaranteed that the position of the film is consistent every time, which will affect the inspection accuracy and test results.

[0004] Therefore, it is necessary to design a film detection fixture to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a film inspection jig, which is used to hold the film to be inspected, can effectively ensure that the film is flat and wrinkle-free, is easy to use, has high positioning repeatability, and produces accurate inspection results.

[0006] The specific technical solution of the utility model is as follows: A film detection fixture includes a separate upper cover and a lower cover, and a plurality of first positioning pins and a plurality of second positioning pins are arranged on the lower cover. The first positioning pins and the second positioning pins are respectively arranged on the adjacent two sides of the lower cover, and the straight lines where the two are located intersect vertically. The upper cover is provided with avoidance holes corresponding to the positions of the first positioning pins and the second positioning pins, and the upper cover is covered on the lower cover by inserting the first positioning pins and the second positioning pins through the avoidance holes.

[0007] As a further improved technical solution of the present invention, a pick-up and release groove is provided on the side of the lower cover plate near the first positioning pin, and the depth of the pick-up and release groove exceeds the distance from the first positioning pin to the edge of the side of the lower cover plate.

[0008] As a further improved technical solution of the present invention, at least two of the first positioning pins and the second positioning pins are provided.

[0009] As a further improved technical solution of the present invention, the upper cover plate and the lower cover plate are made of transparent material.

[0010] As a further improved technical solution of the present invention, the upper cover plate and the lower cover plate are transparent glass plates.

[0011] As a further improved technical solution of the present invention, the upper cover plate and the lower cover plate have the same size.

[0012] As a further improved technical solution of the present invention, the upper cover plate and the lower cover plate are rectangular.

[0013] As a further improved technical solution of the present invention, protruding handles are provided on two opposite sides of the upper cover.

[0014] This new film inspection jig features a split upper and lower cover plate structure. The film is placed on the lower cover plate, and the flat, highly transparent upper cover plate is aligned and pressed against it, ensuring a smooth, wrinkle-free film and convenient operation. Furthermore, the lower cover plate is equipped with first and second locating pins arranged horizontally and vertically. The plastic locating pins position the film's two vertical edges accurately, with high repeatability and no damage to the film, thus improving inspection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the film detection fixture of the utility model in the fastening state.

[0016] Figure 2 This is a schematic diagram of the split structure of the film detection fixture of the utility model.

[0017] Figure 3 This is a schematic diagram of the positions of the upper cover, lower cover, and film. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Reference Figure 1-Figure 2The film inspection jig of this embodiment includes a separate upper cover 1 and lower cover 2. A plurality of first locating pins 21 and a plurality of second locating pins 22 are fixedly provided on the lower cover 2. The first locating pins 21 and the second locating pins 22 are respectively provided on two adjacent sides of the lower cover 2. In this embodiment, two first locating pins 21 and two second locating pins 22 are provided, and the straight lines between the first locating pins 21 and the second locating pins 22 intersect perpendicularly. The upper cover 1 has avoidance holes 11 at positions corresponding to the first locating pins 21 and the second locating pins 22. The avoidance holes 11 are inserted through the first locating pins 21 and the second locating pins 22 to allow the upper cover 1 to cover the lower cover 2, and the film 3 is placed in contact with the surface of the lower cover 2.

[0020] Further reference Figure 3 A pick-and-place groove 23 is provided on the side of the lower cover 2 near the first positioning pin 21. The depth of the pick-and-place groove 23 exceeds the distance from the first positioning pin 21 to the edge of the side of the lower cover 2. The pick-and-place groove 23 facilitates the removal of the film attached to the lower cover 2.

[0021] The upper and lower covers 1 and 2 are made of a transparent material, preferably glass. The first and second locating pins 21 and 22 are made of plastic. The upper and lower covers 1 and 2 are identical in size and are both rectangular. Protruding handles 12 are provided on opposite sides of the upper cover 1 for easy access.

[0022] When placing the film 3, lift the upper cover 1 upwards by holding the handle to separate the upper cover 1 and the lower cover 2, align the adjacent sides of the film 3 to be tested and place it against the first positioning pin 21 and the second positioning pin 22 to complete the positioning of the film 3, then align the avoidance holes 11 of the upper cover 1 with the first positioning pin 21 and the second positioning pin 22 and buckle it, so that the first positioning pin 21 and the second positioning pin 22 are inserted into the avoidance holes 11, and the upper cover 1 is closed on the lower cover 2 to ensure that the film 3 is flat and accurately positioned.

[0023] In addition, the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technical personnel in this field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. A film inspection jig, characterized by: The invention comprises a separate upper cover plate and a lower cover plate, wherein a plurality of first positioning pins and a plurality of second positioning pins are provided on the lower cover plate, wherein the first positioning pins and the second positioning pins are respectively provided on two adjacent sides of the lower cover plate, and the straight lines where the first positioning pins and the second positioning pins are located intersect vertically, and the upper cover plate is provided with avoidance holes corresponding to the positions of the first positioning pins and the second positioning pins, and the upper cover plate is covered on the lower cover plate by inserting the first positioning pins and the second positioning pins through the avoidance holes.

2. The film inspection jig according to claim 1, characterized in that: A pick-up and placement groove is provided on the side of the lower cover plate near the first positioning pin, and the depth of the pick-up and placement groove exceeds the distance from the first positioning pin to the edge of the side of the lower cover plate.

3. The film inspection jig according to claim 1, characterized in that: At least two of the first positioning pins and the second positioning pins are provided.

4. The film inspection jig according to claim 1, characterized in that: The upper cover plate and the lower cover plate are made of transparent material.

5. The film inspection jig according to claim 4, characterized in that: The upper cover plate and the lower cover plate are transparent glass plates.

6. The film inspection jig according to claim 1, characterized in that: The upper cover plate and the lower cover plate have the same size.

7. The film inspection jig according to claim 1, characterized in that: The upper cover plate and the lower cover plate are rectangular.

8. The film inspection jig according to claim 7, characterized in that: The upper cover plate is provided with protruding handles on two opposite sides.

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