Novel spraying frame system for PCB etching

Abstract

The utility model provides a novel spraying frame system for PCB etching, and belongs to the technical field of machinery. The novel spraying frame system for PCB etching comprises a connecting pipe, a valve and an etching liquid distribution assembly. The outer end of the etching liquid distribution assembly fixedly connected with the other end of the valve is closed, and a spraying part is arranged at the bottom end. The etching liquid distribution assembly is composed of a nut cylinder, a main pipeline and two sets of branch pipelines, all the parts are welded seamlessly or integrally, the structure is simplified, and installation and debugging are convenient. A multi-stage filtering structure is designed in the spraying part and comprises an atomizing inner container, a stage barrel, a filtering container and a gasket, the filtering container comprises a positioning barrel and a plurality of layers of filtering nets, fine filtering of etching liquid is achieved, and a nozzle is prevented from being blocked. And the spraying end of the spraying main body is provided with the spraying holes and the inclined through holes, so that atomization and uniform distribution of the etching liquid are facilitated. The device has the advantages of being compact in structure, convenient to install and maintain, good in filtering effect, even in spraying, long in service life and the like, and the etching quality and the production efficiency of the PCB are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the mechanical field, and in particular, to a new type of spray frame system for PCB etching. BACKGROUND

[0002] With the rapid development of the electronic industry, as the core component of electronic equipment, the manufacturing process and technical level of printed circuit board (PCB) are constantly improving. PCB etching is a key link in the PCB manufacturing process, and its quality directly affects the performance and reliability of PCB. The traditional PCB etching method mainly uses immersion or spraying, among which the spraying type is widely used because of its fast etching speed, high efficiency and other advantages.

[0003] At present, the spraying type etching has been widely used in modern PCB manufacturing due to its advantages of fast etching speed, high efficiency and continuous production. The spraying type etching uniformly sprays etching liquid on the surface of PCB through a spray frame system, and uses the chemical action of etching liquid to remove unnecessary copper foil, thereby forming the required circuit pattern. However, the existing PCB etching spray frame system still has some problems in practical application. The existing spray frame system has a complex structure, many components, and is difficult to install and debug; at the same time, there is a lack of effective filtering mechanism inside, and impurities in the etching liquid can easily block the nozzle, causing poor spraying, affecting the etching quality and production efficiency. CONTENT OF THE INVENTION

[0004] In order to make up for the above shortcomings, the present application provides a new type of spray frame system for PCB etching to solve the problems raised in the background art.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model to solve its technical problems is:

[0006] The new type of spray frame system for PCB etching comprises a connecting pipe and a valve fixedly connected at one end of the connecting pipe, characterized in that: the other end of the valve is fixedly connected with an etching liquid distribution assembly, the entering end of the etching liquid distribution assembly is fixedly connected with the other end of the valve through a rubber band, the outer end is closed, and a plurality of spray components are arranged at equal intervals at the bottom end, the interiors of the plurality of spray components are in communication with the interior of the connecting pipe through the etching liquid distribution assembly and the interior of the valve, and the bottom end is downward and the spray end faces different directions.

[0007] Further, the etching liquid distribution assembly comprises a nut barrel, a main pipe and two groups of branch pipes, one end of the nut barrel is fixedly connected with the outer end of the valve through a rubber thread, the other end is integrally formed with the entering end of the main pipe, the main pipe is provided with through holes on both sides and is respectively seamlessly welded with the opposite ends of the two groups of branch pipes, and the bottom ends of the two groups of branch pipes are provided with a plurality of connecting barrels which are integrally casted with the bottom portions of the two groups of branch pipes at equal intervals and are respectively fixedly connected with the outer top ends of the plurality of spraying components through threads.

[0008] Further, the spraying component comprises a fixed head, a spraying main body, an atomizing inner container, a stage barrel, a filter container and a gasket, the top end of the fixed head is threadedly connected with the inner wall of the connecting barrel provided at the bottom end of the branch pipe, the top end of the spraying main body is threadedly connected with the inner bottom portion of the fixed head, the top end of the atomizing inner container and the bottom portion of the stage barrel are attached and placed in the spraying main body, the inner portion of the filter container is sleeved with the top end of the stage barrel and is placed in the inner top portion of the spraying main body, and the gasket is placed between the fixed head and the filter container.

[0009] Further, the outer wall of the fixed head is polygonal, the inner wall is provided with internal threads, and the inner channel is matched with the filter container.

[0010] Further, the inner portion of the spraying main body is provided with a retention channel matched with the atomizing inner container, the stage barrel and the filter container, and the outer wall is provided with external threads and is threadedly connected with the inner wall of the fixed head.

[0011] Further, the spraying main body is provided with a spray hole at the spraying end, the spray hole is linear, and the side wall is provided with an inclined through hole.

[0012] Further, the stage barrel is thin at the top and thick at the bottom, the inner channel is uniform in size, and is sleeved with the inner portion of the filter container.

[0013] Further, the filter container comprises a positioning barrel and a plurality of layers of filter screens, the inner wall of the positioning barrel is sleeved with the top portion of the stage barrel, and the outer wall is attached with the inner wall of the retention channel, and the plurality of layers of filter screens are embedded in the inner top portion of the positioning barrel.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model discloses a spraying frame system structure for PCB etching, which comprises a nut barrel, a main pipeline and two groups of branch pipelines.

[0016] 2. The utility model discloses a multistage filtering structure inside the spraying component, which comprises an atomizing inner container, a stage cylinder, a filtering container and a gasket.

[0017] 3. The utility model discloses a spraying frame system structure for PCB etching, which comprises a nut barrel, a main pipeline and two groups of branch pipelines.

[0018] 4. The utility model discloses a spraying frame system structure for PCB etching, which comprises a nut barrel, a main pipeline and two groups of branch pipelines. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is the schematic diagram of the spraying frame system structure for PCB etching provided by the embodiments of the present application.

[0021] Figure 2 is the schematic diagram of the spraying frame system structure for PCB etching provided by the embodiments of the present application.

[0022] Figure 3 is the schematic diagram of the spraying frame system structure for PCB etching provided by the embodiments of the present application.

[0023] Figure 4 The schematic diagram of the spray hole structure provided for the embodiment of the present application.

[0024] Figure 5 The schematic diagram of the spray component exploded structure provided for the embodiment of the present application.

[0025] Figure 6 The schematic diagram of the spray body cross-sectional structure provided for the embodiment of the present application.

[0026] In the figure: 1-connection pipe; 2-valve; 3-etching liquid distribution assembly; 4-spray component; 5-retention channel; 6-spray hole; 31-nut barrel; 32-main pipe; 33-branch pipe; 41-fixing head; 42-spray body; 43-atomizing inner container; 44-stage barrel; 45-filtering container; 46-gasket; 451-positioning barrel; 452-multilayer filter screen. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0028] Embodiment:

[0029] Please refer to Figure 1 , the new spray frame system for PCB etching includes a connection pipe 1 and a valve 2 fixedly connected to one end of the connection pipe 1.

[0030] Among them, the connection pipe 1 is carefully made of corrosion-resistant materials, and its inner diameter can be flexibly selected according to actual production needs to ensure that the system adapts to different process requirements. The outer end of the connection pipe 1 is specially welded with a flange plate. This design not only facilitates the flange connection with the external etching liquid pipe, making the system installation more convenient, but also greatly simplifies the subsequent disassembly and maintenance work, providing convenience for the maintenance of the system.

[0031] Among them, the valve 2 undertakes the important mission of controlling the on-off of the etching liquid, and its type can be flexibly determined according to the actual working conditions. At the same time, in order to ensure the long-term stable operation of the system, the material of the valve 2 also needs to have excellent corrosion resistance. The installation position of the valve 2 is carefully considered, which is convenient for quickly isolating the relevant area when the spray component 4 needs to be repaired or replaced, thereby simplifying the maintenance process and improving the maintenance efficiency.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6The utility model relates to a PCB etching new type spray frame system, including valve 2 other end fixedly connected with etching liquid distribution subassembly 3, etching liquid distribution subassembly 3 enters end and the other end of valve 2 are fixedly connected through raw rubber band, and the outer end presents closed, and the bottom end is equipped with a plurality of spray components 4 at equal intervals, and a plurality of spray components 4 are internally communicated with the inside of connecting pipe 1 through the inside of etching liquid distribution subassembly 3 and the inside of valve 2, and the bottom end is downward, and the spray end is towards different directions, etching liquid distribution subassembly 3 includes nut cylinder 31, main pipeline 32 and two groups of branch pipeline 33, and spray component 4 includes fixed head 41, spray main body 42, atomization inner container 43, stage cylinder 44, filter container 45 and washer 46, and the inside of spray main body 42 is provided with retention channel 5, and the spray end is provided with spray hole 6.

[0033] Wherein, etching liquid distribution subassembly 3 realizes the uniform distribution of etching liquid, and ensures reliable connection with spray component 4. One end of nut cylinder 31 is designed with thread, is used to seal with the outer end of valve 2 through raw rubber band and is fixedly connected with thread. This connection mode guarantees the sealing of connection, and also facilitates the disassembly and installation of component. The other end of nut cylinder 31 and the entering end of main pipeline 32 are integrally made into shape, form seamless connection, strengthen the integrity and pressure resistance of structure. Main pipeline 32 is the main channel of etching liquid distribution, and its material also selects corrosion-resistant material. Main pipeline 32 is uniformly distributed with a plurality of through holes on both sides, and these through holes are used to connect branch pipeline 33. The diameter and number of through hole are designed according to actual demand to ensure that etching liquid can flow into branch pipeline 33 uniformly. Two groups of branch pipeline 33 are respectively connected with the through hole on both sides of main pipeline 32, and adopt seamless welding technology to connect. This welding mode ensures the strength and sealing property of connecting portion, avoids the leakage of etching liquid. The bottom end of each group of branch pipeline 33 is equipped with a plurality of connecting cylinders, and the top end of these connecting cylinders is integrally casted with the bottom of branch pipeline 33, forms solid connection. The inside of connecting cylinder is provided with thread, is used to be fixedly connected with the outer top end of spray component 4 with thread.

[0034] The spraying part 4 is responsible for uniformly spraying the etching liquid to the PCB surface. The outer wall of the fixed head 41 is polygonal, for example, hexagonal, facilitating installation and disassembly using a wrench. The inner wall is provided with internal threads, and the inner channel matches the filter cartridge 45, used to connect the spraying main body 42 and the filter cartridge 45. The top end of the fixed head 41 is provided with external threads and is connected with the inner wall threads of the bottom end of the branch pipe 33. The outer wall of the spraying main body 42 is provided with external threads and is connected with the inner wall threads of the fixed head 41. The top end of the atomizing inner cartridge 43 and the bottom of the stage cylinder 44 are fitted and placed inside the spraying main body 42, which functions to preliminarily atomize the etching liquid, increase the surface area of the etching liquid, and improve the etching efficiency. The stage cylinder 44 is shaped like a thin top and thick bottom, and the inner channel is uniform in size and is installed inside the retention channel 5 and inside the filter cartridge 45. The special shape of the stage cylinder 44 facilitates the installation of the filter cartridge 45, and the uniform size of the inner channel ensures smooth flow of the etching liquid. The filter cartridge 45 includes a positioning cylinder 451 and a multi-layer filter screen 452. The inner wall of the positioning cylinder 451 is fitted with the top of the stage cylinder 44, and the outer wall is fitted with the inner wall of the retention channel 5, ensuring that the filter cartridge 45 can be accurately installed inside the spraying main body 42. The multi-layer filter screen 452 is embedded in the inner top of the positioning cylinder 451 and is used to finely filter the etching liquid, intercepting impurities therein and preventing the spray holes 6 from being clogged. The filtering precision of the filter cartridge 45 can be selected according to actual needs, for example, 50 microns, 100 microns, 200 microns, etc. The gasket 46 is placed between the fixed head 41 and the filter cartridge 45, serving as a sealing function to prevent leakage of the etching liquid.

[0035] The spraying main body 42 is internally provided with a retention channel 5, which is matched in shape and size with the atomizing inner cartridge 43, the stage cylinder 44, and the filter cartridge 45, ensuring the convenience of modular installation, and the etching liquid can be fully mixed and filtered inside.

[0036] The spraying end of the spraying main body 42 is provided with spray holes 6, which are linear and have inclined through holes in the side wall. The inclination angle of the inclined through holes can be adjusted according to actual needs, for example, 30 degrees, 45 degrees, 60 degrees, etc., so that the etching liquid can form a fan-shaped spraying area after being sprayed, covering a larger area. The diameter and number of the spray holes 6 are designed according to the required spraying pressure and flow. The linear spray holes 6 can also be designed as slit-shaped spray holes 6, which can make the etching liquid form a thinner liquid film after being sprayed, further improving the atomization effect and making the etching liquid more uniformly cover the PCB surface, improving the etching quality.

[0037] The working principle of the new spray frame system for PCB etching is as follows: the etching liquid flows from the connecting pipe 1, is smoothly introduced into the etching liquid distribution assembly 3 through the accurate control of the valve 2. In the distribution assembly 3, the etching liquid is efficiently divided and guided in turn through the nut barrel 31, the main pipe 32 and the branch pipe 33, and finally spurts out from the connecting cylinder at the bottom end of the branch pipe 33, and is injected into each spray part 4. In the spray part 4, the etching liquid first passes through the inner channel of the fixed head 41, and then enters the carefully designed retention channel 5 in the spray body 42. Subsequently, the etching liquid is finely filtered by the filter cartridge 45 arranged in the retention channel 5 during the flow process, and the impurities possibly existing are removed. Then, when the etching liquid passes through the stage cylinder 44, it is subjected to the action of the atomizing inner cartridge 43 and starts to be atomized. Finally, the etching liquid is uniformly and finely sprayed from the spray holes 6 of the spray body 42 to the surface of the PCB, so as to realize efficient and uniform etching effect.

[0038] It is apparent to those skilled in the art that the application is not limited to the details of the foregoing exemplary embodiments, and that the application can be implemented in other particular forms without departing from the spirit or essential characteristics of the application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the application should be defined by the appended claims rather than the above description, and it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A new type of spray frame system for PCB etching, comprising a connecting pipe (1) and a valve (2) fixedly connected at one end of the connecting pipe (1), characterized in that: The other end of the valve (2) is fixedly connected with an etching liquid distribution assembly (3), the entering end of the etching liquid distribution assembly (3) is fixedly connected with the other end of the valve (2) through a raw rubber tape, the outer end is closed, and the bottom end is provided with a plurality of spraying components (4) at equal intervals, the interiors of the plurality of spraying components (4) are communicated with the interior of the connecting pipe (1) through the interiors of the etching liquid distribution assembly (3) and the valve (2), and the bottom end is downward, and the spraying end faces different directions.

2. The novel spray frame system for PCB etching as claimed in claim 1 wherein, The etching liquid distribution assembly (3) comprises a nut cylinder (31), a main pipeline (32) and two groups of branch pipelines (33), one end of the nut cylinder (31) is fixedly connected with the outer end of the valve (2) through a raw rubber tape in a threaded mode, the other end is integrally formed with the entering end of the main pipeline (32), the main pipeline (32) is provided with through holes on both sides and is seamlessly welded with the opposite ends of the two groups of branch pipelines (33) respectively, and the bottom ends of the two groups of branch pipelines (33) are provided with a plurality of connecting cylinders, the top ends of the plurality of connecting cylinders are integrally cast with the bottoms of the two groups of branch pipelines (33) at equal intervals, and the inner bottoms are fixedly connected with the outer top ends of the plurality of spraying components (4) in a threaded mode respectively.

3. The novel spray frame system for PCB etching as claimed in claim 2 wherein, The spraying component (4) comprises a fixed head (41), a spraying main body (42), an atomizing inner container (43), a stage cylinder (44), a filter container (45) and a gasket (46), the top end of the fixed head (41) is connected with the inner wall of the connecting cylinder provided at the bottom end of the branch pipeline (33) in a threaded mode, the top end of the spraying main body (42) is connected with the inner bottom of the fixed head (41) in a threaded mode, the top end of the atomizing inner container (43) is attached with the bottom of the stage cylinder (44) and is arranged in the interior of the spraying main body (42), the interior of the filter container (45) is sleeved with the top end of the stage cylinder (44) and is arranged in the inner top of the spraying main body (42), and the gasket (46) is arranged between the fixed head (41) and the filter container (45).

4. The novel spray frame system for PCB etching as claimed in claim 3 wherein, The outer wall of the fixed head (41) is polygonal, the inner wall is provided with internal threads, and the inner channel is matched with the filter container (45).

5. The novel spray frame system for PCB etching as claimed in claim 4, wherein The interior of the spraying main body (42) is provided with a retention channel (5) matched with the atomizing inner container (43), the stage cylinder (44) and the filter container (45), and the outer wall is provided with external threads and is connected with the inner wall of the fixed head (41) in a threaded mode.

6. The novel spray frame system for PCB etching as claimed in claim 5 wherein, The spraying end of the spraying main body (42) is provided with a spray hole (6), the spray hole (6) is linear, and the side wall is provided with an inclined through hole.

7. The novel spray frame system for PCB etching as claimed in claim 6 wherein, The stage cylinder (44) is thin at the top and thick at the bottom, the inner channels are consistent in size, and is installed in the interior of the retention channel (5) and is sleeved with the interior of the filter container (45).

8. The novel spray frame system for PCB etching as claimed in claim 7, wherein The filter container (45) comprises a positioning cylinder (451) and a plurality of layers of filter screens (452), the inner wall of the positioning cylinder (451) is sleeved with the top of the stage cylinder (44), and the outer wall is attached with the inner wall of the retention channel (5), and the plurality of layers of filter screens (452) are embedded in the inner top of the positioning cylinder (451).

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