A hanger for reducing sheet material sticking

Abstract

The application discloses a hanger for reducing sticking of sheet materials, comprising a frame, a first limiting mechanism and a second limiting mechanism. The frame comprises oppositely arranged top and bottom plates and a plurality of columns supported between the top and bottom plates, and a placement area is formed between the top and bottom plates; the first limiting mechanism comprises first and second limiting plates, the first limiting plate is arranged on the bottom plate and used for supporting the bottom of the sheet, and the second limiting plate is arranged between the columns and used for supporting the side edge of the sheet; one side of the first limiting plate and the second limiting plate is provided with a continuous triangular tooth-shaped structure, and a tooth groove formed by concave between every two adjacent triangular tooth-shaped structures is used for clamping the edge of the sheet; the second limiting mechanism comprises a plurality of supporting lines, the plurality of supporting lines are arranged in a vertical direction and spaced apart between the top and bottom plates, and the plurality of supporting lines are used for limiting the side wall surface of the sheet. The application realizes accurate vertical positioning and accurate separation between sheets of sheet materials, and eliminates the sticking defect.

Description

Technical Field

[0001] This invention relates to a circuit board processing technology, and more particularly to a hanger for reducing the sticking of thin board materials to the board. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this invention and does not constitute prior art.

[0003] As the electronics and information industry moves towards miniaturization, integrated circuit packaging substrates are trending towards thinner designs, leading to a continuous reduction in the thickness of corresponding products. In processes such as electroless nickel-palladium-gold plating, thin sheet materials are typically mounted on fixtures using a vertical insert method for processing. However, the significant reduction in the thickness of these thin sheet materials results in a substantial decrease in overall structural rigidity and makes them highly susceptible to flexible deformation.

[0004] In existing surface treatment processes, the racks used typically have smooth sides and bottom planes, lacking effective positioning and separation mechanisms. During processes like chemical plating and washing, the fluid impact from bath circulation and the agitation of airflow cause thin sheet materials within the racks to easily become mispositioned, tilted, shifted, or wobble outwards, lacking sufficient horizontal support at the edges. These defects lead to adjacent thin sheet materials easily sticking together and being squeezed due to insufficient spacing, resulting in large areas of adhesion defects. Adhesion not only directly causes surface scratches, uneven plating, and plating damage, but also triggers serious appearance and performance reliability defects such as gold wire bonding failure, significantly limiting the processing yield of high-end substrate products.

[0005] It should be noted that the above description of the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of the present invention and facilitating understanding by those skilled in the art. It should not be assumed that the above technical solutions are known to those skilled in the art simply because they have been described in the background section of this invention. Summary of the Invention

[0006] The purpose of this invention is to provide a hanger that reduces the sticking of thin sheet materials. Through the cooperation of multi-dimensional mechanical limiting components, it can eliminate the sticking defect and significantly increase the single-hanger loading capacity while ensuring that the thin sheet materials remain vertically stable and do not tilt or shake in a multi-process high-impact fluid environment.

[0007] To achieve the above objectives, the present invention discloses a hanger for reducing the adhesion of thin sheet materials to the plate, the hanger comprising: The frame includes a top plate and a bottom plate arranged opposite each other, and a plurality of columns supporting the top plate and the bottom plate, wherein the top plate and the bottom plate enclose a placement area. The first limiting mechanism includes a first limiting plate and a second limiting plate. The first limiting plate is disposed on the base plate and is used to support the bottom of the thin plate. The second limiting plate is disposed between the columns and is used to support the side of the thin plate. Both the first limiting plate and the second limiting plate have a continuous triangular tooth structure on one side. The groove formed by the indentation between each two adjacent triangular tooth structures is used to lock the edge of the thin plate. The second limiting mechanism includes multiple support lines, which are arranged vertically between the top plate and the bottom plate, and are used to limit the side wall surface of the thin plate.

[0008] As a further description of the above technical solution, the number of the first limiting plate and the second limiting plate is set to multiple.

[0009] As a further description of the above technical solution, a plurality of first limiting plates are parallel to the short side direction of the frame and are horizontally spaced along the long side direction of the frame.

[0010] As a further description of the above technical solution, the triangular tooth-shaped structures of the plurality of first limiting plates are arranged obliquely, and a support line is passed through the center of the triangular tooth-shaped structure of each first limiting plate.

[0011] As a further description of the above technical solution, a plurality of second limiting portions are parallel to the short side direction of the frame and are arranged perpendicularly at intervals along the direction from the top plate to the bottom plate.

[0012] As a further description of the above technical solution, a support line is provided at the center of the triangular tooth structure of each of the second limiting plates.

[0013] As a further description of the above technical solution, the first limiting plate and the second limiting plate are made of Teflon material, and the outer surfaces of the first limiting plate and the second limiting plate are polished.

[0014] As a further description of the above technical solution, the support wire is made of Teflon material and has a wire diameter of φ1.5mm.

[0015] As a further description of the above technical solution, the triangular tooth structure has a tooth height of 4cm, a tooth width of 1.6cm, and a tooth depth of 2cm.

[0016] As a further description of the above technical solution, the frame is made of titanium alloy.

[0017] By employing the above technical solutions, the beneficial effects of the present invention are as follows: The mounting fixture of this invention, which reduces the adhesion of thin sheet materials, utilizes multi-dimensional mechanical limiting components to ensure the thin sheet material remains vertically stable and does not tilt or sway in a multi-process, high-impact fluid environment. This eliminates adhesion defects and significantly increases the single-load capacity. Specifically, this invention improves the planar smooth structure in existing support methods into a triangular toothed structure on the sides and bottom, achieving precise hard isolation and mechanical locking at the edges of the thin sheet material. This completely eliminates lateral displacement and tilting of the sheet, strictly limiting the deformation of the thin sheet material under fluid impact to a very small range. The first and second limiting mechanisms work together to form a 90-degree omnidirectional closed-loop double-layer limiting system, reducing the adhesion defect rate of thin sheet materials from 3% in traditional processes to 0%, significantly improving the overall yield of the finished product.

[0018] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of a hanger for reducing the sticking of thin sheet materials, provided in the embodiments of this specification. Figure 2 This is a schematic diagram of the first limiting plate of a hanger for reducing the sticking of thin sheet materials, as provided in the embodiments of this specification. Figure 3 This is a schematic diagram of the second limiting plate of a hanger for reducing the sticking of thin sheet materials, as provided in the embodiments of this specification. In the picture: 100. Thin plate; 1. Frame; 11. Columns; 12. Top plate; 13. Base plate; 14. Placement area; 2. First limiting mechanism; 21. First limiting plate; 22. Second limiting plate; 23. Triangular tooth structure; 3. Second limiting mechanism; 31. Support line. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. Furthermore, the accompanying drawings of the present invention are for simple illustrative purposes only and are not depictions of actual dimensions; this is stated in advance. The following embodiments will further describe the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention.

[0023] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0024] Please see Figure 1-3 This embodiment provides a fixture for reducing the adhesion of thin sheet materials to the plate, wherein the fixture includes: Frame 1, the frame 1 includes a top plate 12 and a bottom plate 13 arranged opposite to each other, and a plurality of columns 11 supported between the top plate 12 and the bottom plate 13, the top plate 12 and the bottom plate 13 enclosing a placement area 14; The first limiting mechanism 2 includes a first limiting plate 21 and a second limiting plate 22. The first limiting plate 21 is disposed on the base plate 13 and is used to support the bottom of the thin plate 100. The second limiting plate 22 is disposed between the columns 11 and is used to support the side of the thin plate 100. A continuous triangular tooth structure 23 is provided on one side of both the first limiting plate 21 and the second limiting plate 22. The groove formed by the indentation between each two adjacent triangular tooth structures 23 is used to lock the edge of the thin plate 100. The second limiting mechanism 3 includes multiple support lines 31, which are arranged vertically between the top plate 12 and the bottom plate 13. The multiple support lines 31 are used to limit the side wall surface of the thin plate 100.

[0025] In the structure of the above process, the top plate 12, the bottom plate 13 and the surrounding columns 11 are assembled together to form a stable vertical rectangular frame structure. The cavity formed inside is defined as the placement area 14, which is used to accommodate and support the thin plate 100 to be subjected to surface treatment processes such as chemical plating.

[0026] The first limiting mechanism 2 includes a first limiting plate 21 as a bottom positioning element and a second limiting plate 22 as a side positioning element. The first limiting plate 21 is fixedly disposed on the inner side of the base plate 13 facing the placement area 14, and is used to directly support and stabilize the bottom edge of the thin plate 100. The second limiting plate 22 is disposed between opposite columns 11, and is used to laterally constrain and support the left and right sides of the thin plate 100. Both the first limiting plate 21 and the second limiting plate 22 have integrally formed triangular tooth-shaped structures 23 extending continuously along their length direction on the side facing the thin plate 100. The concave hollow part formed between each two adjacent triangular tooth-shaped structures 23 is defined as a tooth groove. The geometry of the tooth groove matches the edge thickness of the thin plate 100, and the edge of the thin plate 100 can be tightly and stably locked inside the corresponding tooth groove, thereby achieving hard limiting and physical isolation of the thin plate 100 in three-dimensional space.

[0027] The second limiting mechanism 3 includes support lines 31 composed of multiple high-performance material wires. The multiple support lines 31 are parallel to each other and vertically tensioned and spaced apart between the top plate 12 and the bottom plate 13. The multiple support lines 31 pass through the placement area 14 in an array to flexibly fit the side wall surface of the limiting thin plate 100 in a large-area contact state, suppressing its out-of-plane bulging deformation.

[0028] In other words, in the solution of this invention, multi-dimensional mechanical limiting components work together to ensure that the thin plate 100 material remains vertically stable and does not tilt or sway in a multi-process high-impact fluid environment, thereby eliminating the plate-sticking defect and significantly increasing the single-load capacity. Specifically, this invention improves the planar smooth structure in the existing support method into a triangular toothed structure 23 on the sides and bottom, achieving precise hard isolation and mechanical locking at the edge of the thin plate 100 material, completely eliminating lateral displacement and tilting of the plate, and strictly limiting the deformation of the thin plate 100 material under fluid impact to a very small range. The aforementioned first limiting mechanism 2 and second limiting mechanism 3 work together to form a 90-degree all-round closed-loop double-layer limiting system, reducing the plate-sticking defect rate of the thin plate 100 material from 3% in the traditional process to 0, and significantly improving the overall yield of the finished product.

[0029] Furthermore, the number of first limiting plates 21 and second limiting plates 22 is both set to multiple. By arranging multiple first limiting plates 21 at intervals on the base plate 13, multi-point discrete rigid support can be provided from the bottom span direction of the thin plate 100, effectively preventing the ultra-thin plate 100 from collapsing or bending downwards in the middle under the action of gravity. Similarly, by vertically stacking multiple second limiting plates 22 between opposite columns 11, a multi-level lateral clamping and limiting from bottom to top can be formed along the height direction of the thin plate 100, enhancing the mechanical rigidity of the edge area of ​​the thin plate 100 against the impact of external tank liquid.

[0030] Specifically, in the arrangement of the first limiting plates 21, the overall extension direction of the multiple first limiting plates 21 is parallel to the short side direction of the frame 1, and all the first limiting plates 21 are arranged horizontally at equal intervals along the long side direction of the frame 1, so that the triangular toothed structures 23 on all the first limiting plates 21 are aligned in the projection direction, ensuring that multiple thin plates 100 can be inserted into the frame 1 sequentially along the horizontal long side direction. Based on the above scheme, the triangular toothed structures 23 formed on the multiple first limiting plates 21 adopt an obliquely set construction form, that is, the tooth ridge line of the triangular toothed structure 23 forms a specific offset angle with the horizontal or vertical plane. In addition, at the geometric center position of the triangular toothed structure 23 of each first limiting plate 21, a through hole is pre-machined, and each support line 31 in the outermost row is precisely inserted into the through hole at the center of the corresponding triangular toothed structure 23.

[0031] In the arrangement of the second limiting plates 22, the overall extension direction of the multiple second limiting plates 22 is also parallel to the short side direction of the frame 1. These second limiting plates 22 are arranged vertically and equally spaced along the vertical height direction from the top plate 12 to the bottom plate 13. Through the above-mentioned second limiting plates 22 distributed vertically along the height direction, the vertical edge of the thin plate 100 can be fully covered from bottom to top for side clamping. Together with the restriction of the bottom first limiting plate 21, a three-dimensional rigid limiting surface for the side line of the thin plate 100 is constructed. Similarly, at the geometric center of the triangular tooth structure 23 on each second limiting plate 22, a through hole is pre-machined. The outermost row of support lines 31 of the second limiting mechanism 3 also passes through the through hole at the center of the triangular tooth structure 23, realizing the optimized arrangement of the outermost support line 31 in the horizontal direction. This design significantly reduces the relative suspension distance between the outermost support line 31 and the base of the second side limiting plate 22, thereby strictly limiting the suspension length of the edge of the thin plate 100 that is most prone to shaking under high flow rate impact conditions to a very small size, and controlling the lateral outward expansion deformation of the thin plate 100 caused by fluid and airflow to within 0.5mm.

[0032] In terms of material selection, both the first limiting plate 21 and the second limiting plate 22 are made of Teflon, which has excellent resistance to high temperatures, strong acids and alkalis, and an extremely low coefficient of surface friction. Furthermore, the outer surfaces of both the first limiting plate 21 and the second limiting plate 22 are polished to create highly smooth, low-friction surfaces. This polishing process ensures that the triangular tooth structure 23 and the grooves will not cause microscopic scratches to the surface of the ultrathin substrate when physically clamping and constraining the edge of the thin plate 100.

[0033] The support wire 31 is also made of high-performance Teflon material, with its wire diameter precisely set at φ1.5mm. It can exhibit excellent tensile strength, low fluid resistance and a certain degree of flexibility and elasticity when under tension.

[0034] The frame 1 is constructed entirely of high-strength titanium material, possessing structural rigidity, resistance to mechanical fatigue and thermal deformation, and the ability to effectively support the overall weight of multiple thin plates 100 and various limiting mechanisms. It is also resistant to various strong acid and alkali cleaning solutions and high-temperature surface treatment chemicals in the vertical line.

[0035] The specific geometric dimensions of the triangular tooth structure 23 are limited to a tooth height of 4cm, a tooth width of 1.6cm, and a tooth depth of 2cm. The corresponding tooth depth provides a sufficiently deep physical and mechanical space to ensure that the edge of the thin plate 100 can be deeply embedded in the tooth groove and achieve a compact high-density arrangement. At the same time, the bearing distance of the second limiting plate 22 on the side as the edge support line 31 is properly controlled to achieve the edge margin of the small-pitch thin plate 100.

[0036] The content disclosed above is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention specification and drawings are included in the scope of the patent application of the present invention.

[0037] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0038] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. A hanger for reducing the sticking of thin sheet materials, characterized in that, The fixture for reducing the adhesion of thin sheet materials includes: The frame includes a top plate and a bottom plate arranged opposite each other, and a plurality of columns supporting the top plate and the bottom plate, wherein the top plate and the bottom plate enclose a placement area. The first limiting mechanism includes a first limiting plate and a second limiting plate. The first limiting plate is disposed on the base plate and is used to support the bottom of the thin plate. The second limiting plate is disposed between the columns and is used to support the side of the thin plate. Both the first limiting plate and the second limiting plate have a continuous triangular tooth structure on one side. The groove formed by the indentation between each two adjacent triangular tooth structures is used to lock the edge of the thin plate. The second limiting mechanism includes multiple support lines, which are arranged vertically between the top plate and the bottom plate, and are used to limit the side wall surface of the thin plate.

2. The hanger for reducing the adhesion of thin sheet materials according to claim 1, characterized in that: The number of the first limiting plate and the second limiting plate is set to multiple.

3. The hanger for reducing the adhesion of thin sheet materials according to claim 2, characterized in that: Multiple first limiting plates are parallel to the short side of the frame and are horizontally spaced along the long side of the frame.

4. The hanger for reducing the adhesion of thin sheet materials according to claim 3, characterized in that: The triangular tooth-shaped structures of the plurality of first limiting plates are arranged obliquely, and a support line is passed through the center of the triangular tooth-shaped structure of each first limiting plate.

5. The hanger for reducing the adhesion of thin sheet materials according to claim 2, characterized in that: Multiple second limiting portions are parallel to the short side direction of the frame and are arranged perpendicularly at intervals along the direction from the top plate to the bottom plate.

6. The hanger for reducing the adhesion of thin sheet materials according to claim 5, characterized in that: A support line is provided at the center of the triangular tooth structure of each of the second limiting plates.

7. The hanger for reducing the adhesion of thin sheet materials according to claim 1, characterized in that: The first limiting plate and the second limiting plate are made of Teflon material, and the outer surfaces of the first limiting plate and the second limiting plate are polished.

8. The hanger for reducing the adhesion of thin sheet materials according to claim 1, characterized in that: The support wire is made of Teflon and has a diameter of φ1.5mm.

9. The hanger for reducing the adhesion of thin sheet materials according to claim 1, characterized in that: The triangular tooth structure has a tooth height of 4cm, a tooth width of 1.6cm, and a tooth depth of 2cm.

10. The hanger for reducing the adhesion of thin sheet materials according to claim 1, characterized in that: The frame is made of titanium alloy.

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