Mother set glass air guide structure

Abstract

The utility model discloses a mother set glass air guide structure, and belongs to the technical field of exposure of printed circuit boards. Comprising a glass body, an air guide groove and an air suction hole, the air guide groove is formed in the upper surface of the glass body; the two air guide grooves are symmetrically arranged with respect to the center of the glass body. The air suction hole is formed in the bottom of the air guide groove and penetrates through the glass body; wherein the air guide groove is L-shaped, the corner position of the air guide groove is arc-shaped and is close to the center of the glass body, and the end part of the air guide groove is close to the side edge of the glass body. According to the utility model, the centrosymmetric L-shaped gas guide grooves are formed to divide the upper surface of the whole mother set into four areas, and the curve-type gas guide grooves can ensure the strength of each block and quickly guide out gas in each 1 / 4 area, so that the adsorption effect between the mother set and the son set is enhanced, and the exposure precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board exposure technology, specifically to a master glass gas guiding structure. Background Technology

[0002] Exposure machines are essential equipment in modern printed circuit board (PCB) manufacturing, used to complete the exposure process in PCB production. During operation, mother and daughter glass plates are used for mutual adsorption and positioning. The mother plate has air guide grooves and suction holes. In existing technology, straight grooves and holes are typically created on the mother plate to enhance the adsorption effect. However, these straight grooves completely separate the glass surface area along a straight line, compromising the integrity of the glass. This grooving method increases the risk of glass cracking, affecting exposure accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a master glass air-guiding structure that improves the strength and adsorption effect of the master glass by improving the layout of the air-guiding grooves and air-suction holes.

[0004] The present invention adopts the following technical solution: a master glass air guiding structure, including a glass body and an air guiding groove and an air intake hole formed on the glass body;

[0005] The air guide groove is formed on the upper surface of the glass body; there are two air guide grooves, which are symmetrically arranged with respect to the center of the glass body; the air intake hole is formed at the bottom of the air guide groove and penetrates the glass body.

[0006] The air guide groove is L-shaped, with the corner of the air guide groove being arc-shaped and close to the center of the glass body, and the end of the air guide groove being close to the side of the glass body.

[0007] Preferably, the glass body has a rectangular structure, with one side of the air guide groove coinciding with the longitudinal centerline of the glass body and the other side of the air guide groove coinciding with the transverse centerline of the glass body.

[0008] Preferably, at least one air intake hole is provided on each side of the air guide groove.

[0009] Preferably, the air intake hole is a round hole or an elongated hole.

[0010] Preferably, the air guide groove has a width of 2mm and a depth of 0.5mm; the air intake hole has a diameter of 1mm.

[0011] Preferably, a settling groove is provided at the bottom of the air guide groove opposite to the air intake hole, and the air intake hole is located at the bottom of the settling groove; a filter assembly is installed in the settling groove.

[0012] Preferably, the filter assembly includes a housing embedded in a settling tank, and a filter element is installed inside the housing; the top of the housing has evenly distributed small holes, and the bottom of the housing is connected to an air nozzle, which passes through an air intake hole.

[0013] Preferably, the upper end of the air nozzle is threadedly connected to the outer shell, and the lower end of the air nozzle is threadedly connected to a fastening nut, which is pressed against the bottom surface of the glass body.

[0014] Preferably, the housing contains multiple filter elements, and a support is provided between adjacent filter elements.

[0015] Preferably, the settling tank is an elongated tank, and one end of the outer shell has an opening for assembling and disassembling the filter element and the bracket.

[0016] The beneficial effects of this invention are as follows: by opening a centrally symmetrical L-shaped air guide groove, the entire upper surface of the master plate is divided into 4 areas. This curved air guide groove can ensure the strength of each segment and quickly exhaust the gas in each 1 / 4 area, thereby enhancing the adsorption effect between the master plate and the child plate and improving the exposure accuracy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a master glass gas-conducting structure according to Embodiment 1 of this utility model.

[0019] Figure 2 This is a top view of a master glass gas-conducting structure according to Embodiment 1 of this utility model.

[0020] Figure 3 This is a top view of a master glass gas-conducting structure in Embodiment 2 of this utility model.

[0021] Figure 4 for Figure 3 Sectional view of AA.

[0022] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0023] Figure 6 This is a perspective view of the filter assembly and air nozzle in this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Glass body; 2. Air guide groove; 3. Air intake hole; 4. Settling tank; 5. Filter assembly; 51. Outer shell; 52. Filter element; 53. Support; 6. Air nozzle; 61. Fastening nut. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Example 1:

[0028] like Figure 1 , Figure 2 As shown, this utility model provides a master glass air guiding structure, including a glass body 1, on which an air guiding groove 2 and an air intake hole 3 are provided.

[0029] The glass body 1 has a rectangular structure, with two air guide grooves 2 symmetrically arranged along the center of the glass body 1. The air guide grooves 2 are formed on the upper surface of the glass body 1, and are L-shaped, with a groove width of 2mm and a groove depth of 0.5mm. One side of the air guide groove 2 coincides with the longitudinal centerline of the glass body 1, and the other side coincides with the transverse centerline of the glass body 1. The corners of the air guide grooves 2 are smoothly transitioned with rounded grooves, and the corners of the two air guide grooves 2 are close to the center of the glass body 1; the ends of the air guide grooves 2 are close to the sides of the glass body 1, but at a certain distance. This embodiment uses L-shaped air guide grooves. Compared with straight grooves, L-shaped air guide grooves do not completely separate the glass surface area, causing less damage to the integrity of the glass, reducing the risk of glass cracking, and thus improving the strength of the master glass.

[0030] The suction hole 3 is located at the bottom of the air guide groove 2 and has a diameter of 1mm. The suction hole 3 penetrates the glass body 1 in the thickness direction and the lower end of the suction hole 3 is used to connect the suction device.

[0031] The L-shaped air guide groove divides the entire upper surface of the master plate into 4 areas. In use, the sub-plate is placed on the master plate, and the air suction device removes the gas from each 1 / 4 area of ​​the master plate through the air suction hole 3 and the air guide groove 2. This partitioned air suction method can make the sub-plate and the master plate tightly adhere to each area. Compared with the traditional method, the adsorption is more uniform and comprehensive, effectively improving the adsorption effect between the master plate and the sub-plate, thereby improving the exposure accuracy.

[0032] Example 2:

[0033] Based on the above embodiment one, combined with Figure 3 , Figure 4 As shown, a recessed groove 4 is formed at the bottom of the air guide groove 2, opposite to the air intake hole 3. A recessed groove 4 is formed at the center of each side of the air guide groove 2, and two air intake holes 3 are formed at the bottom of each recessed groove 4. A filter assembly 5 is embedded in the recessed groove 4, with its circumference tightly fitting the groove 4. The height of the filter assembly 5 does not exceed the recessed groove 4. By adding the filter assembly 5, impurities that may be introduced during the air extraction process can be filtered out, ensuring that the air extraction device is not contaminated, extending the service life of the air extraction device, ensuring the normal operation of the air extraction device, and thus maintaining a good adsorption effect.

[0034] Example 3:

[0035] Based on the above-described embodiment two, combined with Figures 3 to 6 As shown, in this embodiment, the settling tank 4 is an elongated tank, and the filter assembly 5 includes an elongated outer shell 51. The outer shell 51 is fitted into the settling tank 4, and its circumference is completely flush with the settling tank 4. The outer shell 51 has an inner cavity, and evenly distributed small holes are opened on the top of the outer shell 51, which communicate with the inner cavity. An opening is opened at one end of the length direction of the outer shell 51, through which the alternately stacked filter elements 52 and the bracket 53 are installed in the inner cavity of the outer shell 51. Two threaded holes corresponding to the air intake holes 3 are opened at the bottom of the outer shell 51. The air nozzle 6 passes through the air intake hole 3, and the upper end of the air nozzle 6 is connected to the threaded hole at the bottom of the outer shell 51. A fastening nut 61 is installed at the lower end of the air nozzle 6, and the fastening nut 61 is pressed against the bottom surface of the glass body 1 to fix the air nozzle 6 and the filter assembly 5. Multiple layers of filter elements 52 and a support 53 are set in the elongated outer shell 51 for air filtration. The small holes at the top of the outer shell 51 make the airflow at the settling tank 4 more gentle, avoid the impact on the sub-plate and the mother plate during the air intake and exhaust stages, and ensure the stability of the adsorption effect.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A master glass air guiding structure, comprising a glass body (1) and an air guiding groove (2) and an air intake hole (3) formed on the glass body (1). Its features are: The air guide groove (2) is formed on the upper surface of the glass body (1); there are two air guide grooves (2), which are arranged symmetrically with respect to the center of the glass body (1); the air intake hole (3) is formed at the bottom of the air guide groove (2), and the air intake hole (3) penetrates the glass body (1). Among them, the air guide groove (2) is "L" shaped, the corner of the air guide groove (2) is arc-shaped and close to the center of the glass body (1), and the end of the air guide groove (2) is close to the side of the glass body (1).

2. The master glass gas-conducting structure according to claim 1, characterized in that: The glass body (1) has a rectangular structure. One side of the air guide groove (2) coincides with the longitudinal center line of the glass body (1), and the other side of the air guide groove (2) coincides with the transverse center line of the glass body (1).

3. The master glass gas-conducting structure according to claim 2, characterized in that: At least one air intake hole (3) is provided on each side of the air guide groove (2).

4. The master glass gas-conducting structure according to claim 3, characterized in that: The air intake hole (3) is a round hole or an elongated hole.

5. The master glass gas-conducting structure according to claim 2, characterized in that: The air guide groove (2) has a groove width of 2mm and a groove depth of 0.5mm; the air intake hole (3) has a hole diameter of 1mm.

6. The master glass gas-conducting structure according to claim 1, characterized in that: The bottom of the air guide groove (2) is provided with a sink (4) opposite to the air intake hole (3), and the air intake hole (3) is located at the bottom of the sink (4); a filter assembly (5) is installed in the sink (4).

7. The master glass gas-conducting structure according to claim 6, characterized in that: The filter assembly (5) includes a housing (51) embedded in a settling tank (4), and a filter element (52) is installed inside the housing (51); the top of the housing (51) has evenly distributed small holes, and the bottom of the housing (51) is connected to an air nozzle (6), which passes through the air intake hole (3).

8. The master glass gas-conducting structure according to claim 7, characterized in that: The upper end of the air nozzle (6) is threaded to the outer shell (51), and the lower end of the air nozzle (6) is threaded to a fastening nut (61), which is pressed against the bottom surface of the glass body (1).

9. The master glass gas-conducting structure according to claim 7, characterized in that: The outer shell (51) contains multiple filter elements (52), and a bracket (53) is provided between adjacent filter elements (52).

10. The master glass gas-conducting structure according to claim 9, characterized in that: The settling tank (4) is an elongated tank, and an opening is provided on one end of the outer shell (51) for disassembling and assembling the filter element (52) and the bracket (53).

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