CN216357571U - Polishing structure for preventing abrasion of hole wall of slotted hole - Google Patents
Polishing structure for preventing abrasion of hole wall of slotted hole Download PDFInfo
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- CN216357571U CN216357571U CN202122208787.9U CN202122208787U CN216357571U CN 216357571 U CN216357571 U CN 216357571U CN 202122208787 U CN202122208787 U CN 202122208787U CN 216357571 U CN216357571 U CN 216357571U
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- slotted hole
- wall
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- polishing
- hole
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Abstract
The utility model relates to the field of electronic equipment processing, in particular to a polishing structure for preventing abrasion of a wall of a slotted hole, which comprises a supporting piece and a polishing piece, wherein the supporting piece is arranged in the middle of the slotted hole and is in contact with the wall of the slotted hole through a connecting piece for protecting the wall of the slotted hole, and the shape of the supporting piece is matched with the shape of the slotted hole, and the side, facing the polishing surface, of the supporting piece is not lower than the height of the polishing surface of the slotted hole.
Description
Technical Field
The utility model relates to the field of electronic equipment processing, in particular to a polishing structure for preventing the wall of a slotted hole from being abraded.
Background
As an important electronic processing material, a PCB (printed circuit board), also called as a printed circuit board, is often processed with slotted holes, and the wall portions of the slotted holes are often plated with PTH copper to form a pre-plating layer for improving the bonding force of the plating layer.
When the PCB with the slotted hole is polished at present, when a polishing piece moves to the edge of the slotted hole, the polishing piece generates large elastic deformation, and the deformed part of the polishing piece directly contacts with the wall of the slotted hole to damage a coating.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a polishing structure for preventing the wall of a slotted hole from being abraded, and the polishing structure is used for solving the problem that when the edge of the slotted hole on a PCB is polished, the deformed part of a polishing piece is in direct contact with the wall of the slotted hole to damage a coating due to the fact that the edge of the polishing piece is subjected to large elastic deformation.
In order to achieve the purpose, the utility model provides a grinding structure for preventing the wall of a slotted hole from being worn, which comprises the following components: the method comprises the following steps:
the supporting piece is arranged in the middle of the slotted hole, is in contact with the wall of the slotted hole through the connecting piece and is used for protecting the wall of the slotted hole, meanwhile, the shape of the supporting piece is matched with the shape of the slotted hole, and the side, facing the polishing surface, of the supporting piece is not lower than the height of the polishing surface of the slotted hole.
As a further scheme of the utility model: the connecting piece is a bulge arranged between the wall of the slotted hole and the connecting piece and is used for keeping a gap between the supporting piece and the wall of the slotted hole;
specifically, the method comprises the following steps: the gap is 2 mm.
As a further scheme of the utility model: the quantity of connecting piece is a plurality of, sets gradually the side at support piece.
As a further scheme of the utility model: the connecting piece can be cleared away after finishing the grinding operation.
According to the utility model, the supporting piece is designed in the slotted hole, the supporting piece is fixed in the slotted hole through the connecting piece, and the side, facing the polishing surface, of the supporting piece is not lower than the polishing surface height of the slotted hole, so that the supporting piece assists the edge side of the wall of the slotted hole to support the polishing piece, the deformation of the polishing piece when the edge of the slotted hole is polished is reduced, and the problem that the coating is damaged due to the fact that the polishing piece generates large elastic deformation and the deformed part of the polishing piece is in direct contact with the wall of the slotted hole is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a polishing structure for preventing wear of a wall of a slot hole according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of polishing deformation of a polishing member according to an embodiment of the present invention.
In the figure: 1. a PCB board; 2. plugging holes with resin; 3. a slot; 4. a support plate; 41. a connecting plate.
Detailed Description
In one scene of the application of the utility model, the slotted hole 3 is arranged on the PCB 1, the PCB 1 is provided with a plurality of resin plug holes 2, burrs to be polished and cleaned are formed on the side surface of the slotted hole 3 and the side surface of the hole after the resin plug holes 2 are arranged, due to the problem of the material of the PCB 1, when a polishing piece is selected, the hardness of the polishing piece needs to be required, when the hardness of the polishing piece is higher, the PCB 1 can be damaged, therefore, a softer material is needed for selecting the polishing piece, and when the side surface of the slotted hole 3 is polished, the softer material is deformed greatly, the polishing piece is in direct contact with the side wall of the slotted hole 3, and accordingly, a metal coating attached to the wall of the slotted hole 3 is damaged.
The technical solution of the present invention will be described in further detail with reference to specific embodiments.
As shown in fig. 1, in the embodiment of the present invention, a grinding structure for preventing the wear of the hole wall of the slot 3: the method comprises the following steps: the supporting piece is arranged in the middle of the slotted hole 3, is in contact with the wall of the slotted hole 3 through the connecting piece and is used for protecting the wall of the slotted hole 3, meanwhile, the shape of the supporting piece is matched with the shape of the slotted hole 3, and the side, facing the polishing surface, of the supporting piece is not lower than the height of the polishing surface of the slotted hole 3.
In the utility model, as an embodiment of the utility model, the supporting member is preferably a supporting plate 4, the connecting member is a connecting plate 41, and the supporting plate 4 and the connecting plate 41 are preferably a part of the original PCB 1 with the slot hole 3, when the slot hole 3 is started, a plurality of communicating grooves are arranged along the edge of the slot hole 3 at intervals, the interval part between the communicating grooves is the connecting plate 41, and the middle part of the communicating groove is the supporting plate 4, the advantages of the above-mentioned options are that the supporting plate 4 and the connecting plate 41 are formed by using the self plate of the PCB 1 by adjusting the slot hole 3, the need of additionally preparing the supporting plate 4 and the connecting plate 41 is avoided, and simultaneously, because the supporting plate 4 is the original part of the PCB 1, the height of the supporting plate 4 is the same as the polished surface height of the slot hole 3, which meets the requirement of the supporting plate 4.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the connecting plate 41 is a protrusion disposed between the hole wall of the slot 3 and the connecting member, and is used to leave a gap between the supporting member and the hole wall of the slot 3, specifically, the gap is 2 mm;
in practice, the width can be reasonably increased or reduced according to the actual situation in the design process, but the deformation of the grinding part at the gap meets the design requirement and the grinding part cannot be in contact with the hole wall of the slotted hole 3.
In the embodiment of the present invention, as shown in fig. 1, the number of the connecting plates 41 is plural, and the connecting plates 41 are sequentially disposed on the side of the supporting member, in fig. 1, the shape of the slot 3 is rectangular, so the shape of the supporting plate 4 also needs to be adapted to the shape of the slot 3, and the connecting plates 41 are also designed to be rectangular, and the number of the connecting plates 41 is four, and one side of the four connecting plates 41 is disposed on both sides of the rectangular supporting plate 4, although actually, in the design, when the connection requirement of the supporting plate 4 is met, the number of the connecting plates 41 can be flexibly adjusted according to the actual situation, for example, in the present invention, two connecting plates 41 can be supplemented on both sides of the supporting plate 4 as shown in fig. 1 for the connection of the supporting plate 4;
further complement to the above embodiment: the connecting plate 41 can be removed after the polishing operation is completed, and the connecting plate 41 can be removed by cutting when the polishing operation is completed.
Compared with the prior art, the utility model has the advantages that: through design support piece in slotted hole 3, pass through the connecting piece with support piece and fix in slotted hole 3, design support piece simultaneously and be not less than slotted hole 3 polishing face height towards the side of polishing face, assist 3 pore wall edge sides of slotted hole through support piece and support the piece of polishing, reduce the deformation of the piece of polishing when 3 edges of slotted hole polish, avoid because the piece of polishing takes place great elastic deformation, the piece of polishing deformation position and 3 pore wall direct contact of slotted hole injure the problem of coating.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. The utility model provides a prevent grinding structure of wearing and tearing of slotted hole pore wall which characterized in that includes:
the supporting piece is arranged in the middle of the slotted hole, is contacted with the wall of the slotted hole through the connecting piece and is used for protecting the wall of the slotted hole;
meanwhile, the shape of the supporting piece is matched with the shape of the slotted hole, and the side, facing the polishing surface, of the supporting piece is not lower than the height of the polishing surface of the slotted hole.
2. A grinding structure for preventing abrasion of a wall of a slot hole as claimed in claim 1, wherein said connecting member is a projection provided between the wall of the slot hole and the connecting member for allowing a clearance between the supporting member and the wall of the slot hole.
3. A grinding structure for preventing abrasion of a wall of a slot hole as set forth in claim 2, wherein said clearance is 2 mm.
4. The grinding structure for preventing abrasion of the wall of a slotted hole according to claim 1, wherein the connecting piece is provided in a plurality of numbers, and is arranged on the side surface of the supporting piece in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208787.9U CN216357571U (en) | 2021-09-13 | 2021-09-13 | Polishing structure for preventing abrasion of hole wall of slotted hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122208787.9U CN216357571U (en) | 2021-09-13 | 2021-09-13 | Polishing structure for preventing abrasion of hole wall of slotted hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216357571U true CN216357571U (en) | 2022-04-19 |
Family
ID=81169899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122208787.9U Active CN216357571U (en) | 2021-09-13 | 2021-09-13 | Polishing structure for preventing abrasion of hole wall of slotted hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216357571U (en) |
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2021
- 2021-09-13 CN CN202122208787.9U patent/CN216357571U/en active Active
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