Etching clamp

Abstract

The utility model discloses an etching clamp which comprises a fixing frame and a supporting structure, the fixing frame is a horizontally-placed frame-shaped structural member, and the supporting structure is arranged on the fixing frame; the supporting structure comprises a supporting part and a communicating part connected with the supporting part, and the supporting part is connected to the fixing frame and used for supporting a substrate; and the communicating part is used for communicating the spaces on the two sides of the supporting part. According to the utility model, the supporting structure is arranged on the fixed frame, and the substrate is supported by the supporting part. In the etching process, the etching liquid sprayed to the substrate flows to the communicating part and then flows away downwards, the situation that new etching liquid makes contact with the substrate is prevented, therefore, the substrate can make contact with the new etching liquid continuously, etching is evenly completed at all positions, and the effect of improving the etching quality is achieved.

Description

Technical Field

[0001] The utility model relates to the field of PCB board processing, in particular to an etching fixture. Background Art

[0002] In the electronics industry, etching technology is widely used in the manufacture of printed circuit boards (PCBs) to form conductive paths or manufacture other electronic components. Etching usually involves immersing the substrate in a specific chemical solution that reacts with the surface of the substrate to corrode or dissolve the surface of the substrate. Existing etching equipment uses a clamp to fix the substrate and etches the horizontally moving substrate by spraying etching liquid downward. However, during the spraying process, since the end face of the clamp is higher than the substrate, the etching liquid easily forms a layer of water film on the substrate, which prevents the new etching liquid from contacting the substrate, causing uneven etching and affecting the etching quality. Utility Model Content

[0003] The embodiment of the utility model provides an etching fixture to solve the problem of uneven etching and improve the etching quality.

[0004] Specifically, the utility model provides an etching fixture, including a fixed frame and a supporting structure, wherein the fixed frame is a horizontally placed frame-shaped structural member, and the supporting structure is arranged on the fixed frame; the supporting structure includes a supporting part and a connecting part connected to the supporting part, and the supporting part is connected to the fixed frame and is used to support a substrate; the connecting part is used to connect the space on both sides of the supporting part.

[0005] Optionally, the support portion is connected to an inner side wall of the fixing frame and is spaced apart from an upper end surface of the fixing frame.

[0006] Optionally, the supporting structure is a gauze, the supporting portion is the yarn of the gauze, and the connecting portion is the mesh of the gauze.

[0007] Optionally, the gauze is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material.

[0008] Optionally, the supporting structure is a supporting sheet, and the connecting portion is a through hole opened on the supporting sheet.

[0009] Optionally, there are multiple through holes, and the multiple through holes are arranged in a rectangular array on the support sheet.

[0010] Optionally, the support sheet is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material.

[0011] Optionally, the support portion includes at least two support lines disposed at intervals, and a distance between two adjacent support lines is smaller than a length and / or a width of the substrate.

[0012] Optionally, at least part of the support line extends along the length direction of the fixed frame; and / or, at least part of the support line extends along the width direction of the fixed frame; and / or, at least part of the support line extends along a preset straight line, and an angle between the preset straight line and the width direction of the fixed frame is greater than 0° and less than 90°.

[0013] Optionally, the support wire is made of metal; a corrosion-resistant layer is provided on the support wire, and the corrosion-resistant layer is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material.

[0014] The beneficial effects of the utility model are:

[0015] In the etching fixture provided by the utility model, a support structure is arranged on the fixed frame, and the substrate is supported by the support part. During etching, the etching liquid sprayed on the substrate flows to the connecting part and then flows downward, avoiding hindering the contact of new etching liquid with the substrate, so that the substrate can be continuously contacted with new etching liquid, and etching is completed uniformly everywhere, thereby achieving the effect of improving etching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 is a schematic structural diagram of an etching fixture in one embodiment of the utility model;

[0018] Figure 2 is a schematic structural diagram of an etching fixture in another embodiment of the utility model;

[0019] Figure 3 It is a schematic structural diagram of an etching fixture in another embodiment of the utility model.

[0020] In the figure: 100, fixing frame, 200, supporting structure, 210, supporting part, 211, supporting wire, 212, yarn, 220, connecting part, 221, mesh, 222, through hole. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Figure 1 Schematic diagram of the etching fixture in one embodiment of the utility model. Figure 1 As shown, and refer to Figures 2 to 3 The embodiment of the utility model provides an etching fixture, including a fixed frame 100 and a supporting structure 200, wherein the fixed frame 100 is a horizontally placed frame-shaped structural member; the supporting structure 200 is arranged on the fixed frame 100; the supporting structure 200 includes a supporting portion 210 and a connecting portion 220 connected to the supporting portion 210, wherein the supporting portion 210 is connected to the fixed frame 100 and is used to support a substrate; the connecting portion 220 is used to connect the spaces on both sides of the supporting portion 210, specifically, the spaces on both sides of the supporting portion 210 are respectively the space on the side of the supporting portion 210 facing the substrate and the space away from the substrate.

[0025] When used, the etching equipment sprays the etching liquid downward onto the substrate, and the etching liquid reacts with the surface of the substrate to corrode or dissolve the surface of the substrate. Since the corroded or dissolved material will also affect the etching effect of the etching liquid after dissolving in the etching liquid, the etching liquid needs to be drained away so that new etching liquid can contact the substrate.

[0026] In the embodiment of the utility model, since the support structure 200 is arranged on the fixed frame 100, the substrate is supported by the support part 210. During etching, the etching liquid sprayed on the substrate flows to the connecting part 220 and then flows downward, avoiding hindering the new etching liquid from contacting with the substrate. Therefore, the substrate can be continuously contacted with the new etching liquid, and etching is completed uniformly everywhere, thereby achieving the effect of improving the etching quality.

[0027] In one embodiment of the present invention, the support portion 210 is connected to the inner side wall of the fixing frame 100 and is spaced apart from the upper end surface of the fixing frame 100. In this way, the upper end surface of the fixing frame 100 is higher than the plane where the support portion 210 is located. After the substrate is placed on the support portion 210, the inner side wall of the fixing frame 100 can limit the substrate and prevent the substrate from sliding out of the fixing frame 100 during etching.

[0028] like Figure 1 As shown, in one embodiment of the utility model, the support structure 200 is a gauze, the support portion 210 is the yarn 212 of the gauze, and the connecting portion 220 is the mesh 221 of the gauze. The gauze is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material, so as to utilize the corrosion resistance of these materials to prevent the etching liquid from corroding the gauze and affecting the etching quality. Preferably, the gauze is made of polytetrafluoroethylene material.

[0029] like Figure 2 As shown, in an alternative embodiment of the utility model, the support structure 200 is a support sheet, and the connecting portion 220 is a through hole 222 opened on the support sheet. The provision of the support sheet can increase the mechanical strength of the etching fixture and improve its service life. The provision of the through hole 222 facilitates the etching liquid to pass through the support sheet and flow out of the etching fixture. Specifically, the number of the through holes 222 is multiple, and the multiple through holes 222 are arranged in a rectangular array on the support sheet.

[0030] Furthermore, the support sheet is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material, so as to utilize the corrosion resistance of these materials to prevent the etching solution from corroding the support sheet and affecting the etching quality. Preferably, the support sheet is made of polytetrafluoroethylene material.

[0031] like Figure 3As shown, in an alternative embodiment of the utility model, the support portion 210 includes at least two support lines 211 arranged at intervals, and the distance between two adjacent support lines 211 is less than the length and / or width of the substrate. In this embodiment, the support lines 211 arranged at intervals form the support portion 210, and the area between the support lines 211 is the connecting portion 220. This arrangement maximizes the area of ​​the connecting portion 220, so that the etching liquid can quickly flow through the substrate, making it easier for new etching liquid to contact the substrate, reducing the influence of the etching liquid that has dissolved into the substrate material on the etching effect of the substrate, so as to improve the etching quality.

[0032] Specifically, at least part of the support line 211 extends along the length direction of the fixed frame 100; and / or, at least part of the support line 211 extends along the width direction of the fixed frame 100; and / or, at least part of the support line 211 extends along a preset straight line, and the angle between the preset straight line and the width direction of the fixed frame 100 is greater than 0° and less than 90°, so as to form an irregular arrangement.

[0033] Furthermore, the support wire 211 is made of metal; the support wire 211 is coated with a corrosion-resistant layer, and the corrosion-resistant layer is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material. Preferably, the support wire 211 is a steel wire, and the corrosion-resistant layer is made of polytetrafluoroethylene material. This arrangement facilitates the steel wire to provide a strong support effect and avoids the support wire 211 from breaking. The corrosion-resistant layer can protect the steel wire from being corroded by the etching solution, avoid affecting the etching quality, and improve the service life of the etching fixture.

[0034] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. An etching fixture, characterized in that: It includes a fixed frame and a supporting structure, wherein the fixed frame is a horizontally placed frame-shaped structural member, and the supporting structure is arranged on the fixed frame; the supporting structure includes a supporting portion and a connecting portion connected to the supporting portion, and the supporting portion is connected to the fixed frame and is used to support the substrate; The communication portion is used to connect the spaces on both sides of the support portion.

2. The etching fixture according to claim 1, characterized in that: The support portion is connected to the inner side wall of the fixing frame and is spaced apart from the upper end surface of the fixing frame.

3. The etching fixture according to claim 2, characterized in that: The supporting structure is a gauze mesh, the supporting portion is the yarn of the gauze mesh, and the connecting portion is the mesh of the gauze mesh.

4. The etching fixture according to claim 2, characterized in that: The supporting structure is a supporting sheet, and the connecting portion is a through hole opened on the supporting sheet.

5. The etching fixture according to claim 4, characterized in that: There are multiple through holes, and the multiple through holes are arranged in a rectangular array on the support sheet.

6. The etching fixture according to claim 3 or 4, characterized in that: The support structure is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material.

7. The etching fixture according to claim 1, characterized in that: The support portion includes at least two support lines arranged at intervals, and the distance between two adjacent support lines is smaller than the length and / or width of the substrate.

8. The etching fixture according to claim 7, characterized in that: At least part of the support line extends along the length direction of the fixed frame; and / or, at least part of the support line extends along the width direction of the fixed frame; and / or, at least part of the support line extends along a preset straight line, and the angle between the preset straight line and the width direction of the fixed frame is greater than 0° and less than 90°.

9. The etching fixture according to claim 7, characterized in that: The support wire is made of metal; a corrosion-resistant layer is arranged on the support wire, and the corrosion-resistant layer is made of polytetrafluoroethylene material, polyperfluoroalkoxy resin material, polyfluoroether material, polyfluoropropylene material, carbon fiber material or basalt fiber material.

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