An etching transmission module

Abstract

This invention relates to an etching conveying module in the field of etching technology, comprising a fixed frame and several roller modules. Along the length of the fixed frame, several positioning grooves are sequentially arranged on the fixed frame, and the roller modules are respectively disposed in the positioning grooves. The fixed frame includes a metal skeleton and an isolation wrapping structure, with the metal skeleton embedded in the isolation wrapping structure. By embedding the metal skeleton in the isolation wrapping structure, this invention completely isolates the metal skeleton from contact with acidic etching solution and etching mist, fundamentally avoiding the problem of corrosion and rust on the metal skeleton. At the same time, the embedded metal skeleton ensures the structural strength of the entire fixed frame, and there will be no problems of frame deformation or positioning groove displacement even after long-term use. It balances corrosion resistance and structural strength, solving the pain point of the prior art where these two aspects could not be achieved simultaneously.

Description

Technical Field

[0001] This invention relates to the field of etching technology, and more specifically to an etching transfer module. Background Technology

[0002] PCB acid cyclic etching refers to the process of using an acidic solution to etch away the non-circuit copper layers of a printed circuit board, exposing the circuitry and completing the final circuit formation. A transport structure is used to move the printed circuit board during acid cyclic etching.

[0003] Existing technology conveyor modules typically use an integrated plastic frame or an all-metal frame to install the drive rollers. Although the integrated plastic frame can resist the corrosion of acidic etching solutions, the overall structural strength is low. After bearing the weight of the drive rollers and PCB boards for a long time, the frame is prone to deformation and the positioning groove is prone to displacement. This can lead to skewing and jamming of the PCB board during the conveying process, affecting the accuracy and yield of the etching process.

[0004] While all-metal frames offer sufficient structural strength, they typically need to be offset to avoid direct exposure to acidic etching solutions. Even so, under prolonged exposure to acidic etching solution fumes, the frames are still highly susceptible to corrosion and rust, resulting in a short lifespan and the contamination of the etching solution by corrosion-induced impurities, rendering the product unusable. Some improvements involve applying an anti-corrosion coating to the metal frame surface; however, this coating is prone to peeling and wear under prolonged contact with etching solution fumes. Once the coating is damaged, corrosion quickly spreads inward, eroding the internal metal, thus failing to fundamentally solve the problem of balancing structural strength and corrosion resistance.

[0005] To address the aforementioned technical problems, this invention proposes an etching transmission module. Summary of the Invention

[0006] The present invention provides an etching transfer module to solve the problems mentioned in the background art.

[0007] The objective of this invention is achieved through the following means: An etching conveying module includes a fixed frame and several roller modules. Along the length of the fixed frame, several positioning grooves are sequentially arranged on the fixed frame, and the roller modules are respectively disposed in the several positioning grooves. The fixed frame includes a metal skeleton and an isolation wrapping structure. The metal skeleton is embedded in the isolation wrapping structure. The isolation wrapping structure includes a base and two side walls. The metal skeleton connects the two side walls to both sides of the base respectively, forming a U-shaped isolation wrapping structure.

[0008] As a preferred embodiment of an etching transfer module, the metal frame includes a support frame and two connecting frames. The two connecting frames are respectively vertically arranged on both sides of the support frame, and the lower end of the connecting frame is provided with a first connecting part that penetrates the isolation wrapping structure.

[0009] As a preferred embodiment of an etching transfer module, the positioning groove is disposed on the side wall, and the upper end of the positioning groove is open upward; the connecting frame includes a horizontal bar and several vertical bars, and along the length direction of the horizontal bar, several vertical bars are sequentially spaced on the horizontal bar, and the positioning groove is formed between two adjacent vertical bars.

[0010] As a preferred embodiment of an etching transfer module, the support frame is composed of several first connecting rods and second connecting rods arranged in a crisscross pattern.

[0011] As a preferred embodiment of the etching transfer module, the first connecting rod is provided with support arms at both ends for supporting the connecting frame. The support arms are arranged obliquely from bottom to top, with their upper ends fixedly connected to the lower inner wall of the connecting frame and their lower ends extending obliquely away from the central axis of the supporting frame.

[0012] As a preferred embodiment of the etching transfer module, one end of the second connecting rod is provided with a second connecting portion protruding from the base, and the end of the base away from the second connecting portion is provided with a receiving groove that can accommodate the second connecting portion.

[0013] As a preferred embodiment of an etching transfer module, the roller module includes a slider structure and at least one drive roller. Along the height direction of the slider structure, at least two mounting positions for fixing the drive roller are provided on the slider structure, and the slider structure is slidably mounted on the positioning groove.

[0014] As a preferred embodiment of the etching conveying module, a main drive shaft is mounted on one side of the fixed frame, and a first gear and a second gear are respectively provided at both ends of the drive roller. The main drive shaft meshes with the first gear through a third gear.

[0015] As a preferred embodiment of an etching conveying module, the transmission roller is fitted with several rollers.

[0016] This invention embeds a metal skeleton within an isolation and encapsulation structure, which completely isolates the metal skeleton from contact with acidic etching solution and etching mist, thus fundamentally preventing the metal skeleton from corroding and rusting. At the same time, the embedded metal skeleton ensures the structural strength of the entire fixed frame, preventing frame deformation and positioning groove misalignment even after long-term use. It balances corrosion resistance and structural strength, solving the pain point that existing technologies cannot achieve both simultaneously. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first structure of an etching transmission module according to the present invention; Figure 2 This is a schematic diagram of the second structure of an etching transmission module according to the present invention; Figure 3 This is a first exploded view of an etching conveying module according to the present invention; Figure 4 This is a second exploded view of an etching conveying module according to the present invention; Figure 5 This is a schematic diagram of the metal skeleton in this invention; Figure 6 This is a schematic diagram of the first assembly of an etching transmission module according to the present invention; Figure 7 This is a schematic diagram of the second assembly of an etching transmission module according to the present invention.

[0018] The reference numerals in the figure are as follows: 1-fixed frame, 10-positioning groove, 11-metal skeleton, 111-bearing frame, 112-connecting frame, 113-first connecting part, 114-second connecting part, 115-support arm, 12-base, 121-accommodating groove, 13-side wall; 2-Roller module, 21-Slider structure, 22-Drive roller, 23-First gear, 24-Second gear, 25-Roller; 3-Main drive shaft, 31-Third gear. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0024] In one embodiment of the present invention, such as Figure 1-7 As shown, a specific implementation of an etching conveying module includes a fixed frame 1 and several roller modules 2. Along the length of the fixed frame 1, several positioning grooves 10 are sequentially arranged on the fixed frame 1, and several roller modules 2 are respectively arranged in several positioning grooves 10. The fixed frame 1 includes a metal skeleton 11 and an isolation wrapping structure, and the metal skeleton 11 is embedded in the isolation wrapping structure. This invention embeds the metal skeleton 11 within an isolation and encapsulation structure, which completely isolates the metal skeleton 11 from contact with acidic etching solution and etching mist. This fundamentally avoids the problem of corrosion and rust on the metal skeleton 11. At the same time, the embedded metal skeleton 11 ensures the structural strength of the entire fixed frame 1, and there will be no problems of frame deformation or displacement of positioning groove 10 even after long-term use. It balances corrosion resistance and structural strength, solving the pain point that the prior art cannot achieve both simultaneously.

[0025] The isolation packaging structure includes a base 12 and two side walls 13. The metal frame 11 connects the two side walls 13 to the two sides of the base 12 respectively, forming a U-shaped isolation packaging structure. The U-shaped opening is upward. A number of positioning grooves 10 are evenly opened along the length direction on the opposite inner surfaces of the two side walls 13. The positioning grooves 10 on the two side walls 13 at the same height correspond one-to-one. The two ends of each roller module 2 are respectively inserted into a pair of positioning grooves 10 at the same height, realizing the rapid positioning and installation of the roller module 2.

[0026] The metal frame 11 includes a support frame 111 and two connecting frames 112. The two connecting frames 112 are respectively vertically arranged on both sides of the support frame 111. The lower end of the connecting frame 112 is provided with a first connecting part 113 that penetrates the isolation and wrapping structure. The first connecting part 113 is used to fix the connection with the external etching equipment frame, ensuring the reliability of the connection between the metal frame 11 and the external structure, while avoiding the metal frame 11 being directly exposed to the etching environment and reducing the risk of being corroded by corrosive chemicals.

[0027] The supporting frame 111 is embedded in the base 12, and the two connecting frames 112 are respectively embedded in the two side walls 13.

[0028] The positioning groove 10 is disposed on the side wall 13, and the upper end of the positioning groove 10 is open upward. The connecting frame 112 includes a horizontal bar and several vertical bars. Along the length direction of the horizontal bar, several vertical bars are sequentially spaced on the horizontal bar, and the positioning groove 10 is formed between two adjacent vertical bars. The two side walls 13 of the positioning groove 10 are respectively limited by the adjacent vertical bars and the outer isolation wrapping structure. The vertical bars, as the skeleton part, can not only ensure the structural strength of the positioning groove 10 and avoid the problem of deformation of the positioning groove 10 after long-term insertion and removal of the roller module 2, but also not be directly exposed to the etching environment and will not be corroded by the chemical solution.

[0029] The support frame 111 is composed of several first connecting rods and second connecting rods arranged in a crisscross pattern to form a stable frame structure. The first connecting rods and second connecting rods are completely covered by an isolation and wrapping structure, preventing them from directly contacting the etching environment. This ensures the overall structural rigidity of the base 12 while avoiding the risk of corrosion.

[0030] The first connecting rod has support arms 115 at both ends to support the connecting frame 112. The support arms 115 are arranged obliquely from bottom to top, with their upper ends fixedly connected to the lower inner wall of the connecting frame 112, and their lower ends extending obliquely away from the central axis of the bearing frame 111. This further enhances the structural stability of the connecting frame 112, prevents the side wall 13 from tilting outward after long-term stress, and further ensures the positional accuracy of the positioning groove 10. At the same time, the obliquely arranged support arms 115 can form a stable oblique support for the connecting frame 112 on both sides, further improving the overall structural stability of the fixed frame 1 and preventing lateral deformation. The ends of the oblique support arms 115 are fitted to the side wall 13 of the connecting frame 112 and connected by welding.

[0031] One end of the second connecting rod is provided with a second connecting part 114 protruding from the base 12. The end of the base 12 away from the second connecting part 114 is provided with a receiving groove 121 that can accommodate the second connecting part 114. When it is necessary to extend the overall length of the etching conveying module, the second connecting part 114 of one module can be aligned and inserted into the receiving groove 121 of the corresponding end of another module, so that multiple conveying modules can be quickly spliced ​​together. The length can be extended without the need for additional external fasteners, adapting to etching production lines of different capacity scales, with stronger adaptability. The matching design of the second connecting part 114 and the receiving groove 121 makes it convenient to splice multiple etching conveying modules along the length direction, which can flexibly adapt to the needs of etching production lines of different lengths, with stronger adaptability. Moreover, the metal connection structure at the splicing point is also covered by the base 12, with only the end face of the second connecting part 114 exposed. The contact area is small, and the risk of corrosion is much lower than that of the traditional metal frame structure with the whole exposed.

[0032] In addition, to prevent the exposed second connection part 114 from being corroded, a corrosion-resistant protective coating can be pre-coated on the end face of the second connection part 114 or a protective sleeve can be added to further reduce the risk of corrosion and extend the service life of the splicing structure.

[0033] The roller module 2 includes a slider structure 21 and at least one drive roller 22. Along the height direction of the slider structure 21, two mounting positions for fixing the drive roller 22 are provided on the slider structure 21. The slider structure 21 is slidably mounted on the positioning groove 10.

[0034] In practical applications, one or two drive rollers 22 can be installed on a set of slider structures 21 according to actual needs. Specifically, when etching some sheet metal parts, two opposing drive rollers 22 (double layer) can be arranged on the slider structures 21 at the module inlet and outlet, and a single layer of drive rollers 22 can be arranged in the area where the etching liquid is sprayed. This meets the clamping and transmission needs of different areas without the need for a unified overall setup. It can better match the requirements of different areas for the transmission structure during the etching process, reduce unnecessary structural obstruction, and ensure that the etching liquid can be fully sprayed onto the workpiece surface, improving etching uniformity. When it is necessary to adjust the height of the roller module 2 or replace the roller module 2, it is only necessary to pull the corresponding slider structure 21 out of the positioning groove 10 without disassembling the entire frame, making maintenance and adjustment more convenient.

[0035] A main drive shaft 3 is installed on one side of the fixed frame 1. A first gear 23 and a second gear 24 are respectively provided at both ends of the transmission roller 22. The main drive shaft 3 meshes with the first gear 23 through a third gear 31. The two transmission rollers 22 on the same slider structure 21 mesh with the second gear 24 to achieve synchronous rotation of the two transmission rollers 22 on the same slider by a single drive source, ensuring consistent transmission speed and avoiding jamming or slippage during workpiece transmission.

[0036] The transmission roller 22 is fitted with a plurality of rollers 25, which are spaced apart along the length of the transmission roller 22. The outer surface of the rollers 25 protrudes from the roller body of the transmission roller 22. When the workpiece is placed above the rollers 25 for conveying, the transmission relies on the contact between the rollers 25 and the lower surface of the workpiece. Compared with the whole integrated transmission roller 22, the dispersed arrangement of the rollers 25 reduces the contact area with the lower surface of the workpiece, allowing the etching solution to flow more smoothly between the roller body and the workpiece, avoiding the obstruction of the etching solution due to the excessive contact area, and further ensuring the etching effect of the lower surface of the workpiece.

[0037] This invention can effectively avoid PCB board skewing and jamming caused by deformation and corrosion of the conveyor module, improve the precision of etching process and product yield, extend the overall service life of the conveyor module, and reduce the risk of product scrapping caused by corrosion impurities contaminating the etching solution. It is highly practical.

[0038] In this embodiment, the isolation and wrapping structure is made of Teflon material that is resistant to acid and alkali corrosion and is integrally injection molded to completely wrap the metal skeleton 11. This can prevent the etching solution from contacting and corroding the metal skeleton 11 and extend the overall service life of the conveying module.

[0039] Compared to traditional integrated metal frames, this structure isolates the etching solution from the metal skeleton 11 through an acid and alkali resistant insulating wrapping structure. This not only preserves the high structural strength of the metal skeleton 11 and prevents deformation of the conveying module under long-term stress, but also solves the problem of the metal frame being easily corroded by the etching solution. At the same time, the modular installation structure facilitates the disassembly and replacement of individual roller modules 2. When a roller component shows wear and aging, maintenance can be completed quickly without disassembling the entire conveying module, effectively reducing the time cost of equipment maintenance.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. An etching conveying module, comprising a fixed frame (1) and a plurality of roller modules (2), a plurality of positioning grooves (10) are sequentially arranged on the fixed frame (1) along the length direction of the fixed frame (1), and the plurality of roller modules (2) are respectively arranged in the plurality of positioning grooves (10), characterized in that: The fixed frame (1) includes a metal skeleton (11) and an isolation wrapping structure, wherein the metal skeleton (11) is embedded in the isolation wrapping structure; The isolation packaging structure includes a base (12) and two side walls (13). The metal frame (11) connects the two side walls (13) to the two sides of the base (12) respectively, forming a U-shaped isolation packaging structure.

2. The etching conveyor module of claim 1, wherein: The metal frame (11) includes a support frame (111) and two connecting frames (112). The two connecting frames (112) are respectively vertically arranged on both sides of the support frame (111). The lower end of the connecting frame (112) is provided with a first connecting part (113) that penetrates the isolation wrapping structure.

3. The etch delivery module of claim 2, wherein: The positioning groove (10) is disposed on the side wall (13), and the upper end of the positioning groove (10) is open upward; The connecting frame (112) includes a horizontal bar and several vertical bars. Along the length of the horizontal bar, several vertical bars are sequentially spaced on the horizontal bar, and the positioning groove (10) is formed between two adjacent vertical bars.

4. The etching transfer module according to claim 2, characterized in that: The supporting frame (111) is composed of several first connecting rods and second connecting rods arranged in a crisscross pattern.

5. The etching transfer module according to claim 4, characterized in that: The first connecting rod is provided with support arms (115) at both ends for supporting the connecting frame (112). The support arms (115) are arranged obliquely from bottom to top, with their upper ends fixedly connected to the lower inner wall of the connecting frame (112) and their lower ends extending obliquely to the side away from the central axis of the bearing frame (111).

6. The etching transfer module according to claim 4, characterized in that: One end of the second connecting rod is provided with a second connecting part (114) protruding from the base (12), and the end of the base (12) away from the second connecting part (114) is provided with a receiving groove (121) that can be adapted to the second connecting part (114).

7. An etching transfer module according to any one of claims 1-6, characterized in that: The roller module (2) includes a slider structure (21) and at least one drive roller (22). Along the height direction of the slider structure (21), at least two mounting positions for fixing the drive roller (22) are provided on the slider structure (21). The slider structure (21) is slidably mounted on the positioning groove (10).

8. The etching transfer module according to claim 7, characterized in that: The main drive shaft (3) is installed on one side of the fixed frame (1), and the first gear (23) and the second gear (24) are respectively provided at both ends of the drive roller (22). The main drive shaft (3) meshes with the first gear (23) through the third gear (31).

9. The etching transfer module according to claim 7, characterized in that: The transmission roller (22) is fitted with several rollers (25).

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