CN213563029U

CN213563029U - Oily backing plate

Info

Publication number: CN213563029U
Application number: CN202021976353.2U
Authority: CN
Inventors: 邹向东
Original assignee: Guangdong Zhongchen Electronic Technology Co ltd
Current assignee: Guangdong Zhongchen Electronic Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-06-29
Anticipated expiration: 2030-09-11

Abstract

The utility model particularly discloses an oily backing plate, which comprises a backing plate main body and paper layers adhered to the upper and lower ends of the backing plate main body; further comprising: through holes penetrating the pad main body and the paper layer respectively; the through holes comprise a first sub through hole and a second through hole, and the first sub through hole and the second through hole are symmetrically positioned on the inner wall of the through hole; and the lubricating layer is fixed on the inner walls of the first sub-through hole and the second through hole. The oily backing plate of the utility model can quickly discharge the scraps generated by drilling, and reduce the sticking quantity of the drill bit; the drill bit can be positioned by the aid of the lubricating layer, so that the drill bit is not prone to shifting during drilling, and drilling accuracy is improved.

Description

Oily backing plate

Technical Field

The utility model relates to a PCB board skilled worker technical field, concretely relates to oil backing plate.

Background

Currently, in the PCB industry, a fiber board, a phenol resin laminate, a white melamine board, and the like are generally used as a pad for drilling. With the rapid development of the technological level in recent years, high-precision technology is emerging continuously, and especially in the further development of some high-density interconnection printed circuit boards (HDI) and multilayer boards, the hole diameter of a PCB drilling hole is required to be smaller and smaller. The small-diameter drill bit for small bore diameter has faster rotation speed in the drilling process, and can reach 25-35 ten thousand revolutions per minute. The drill bit with high rotation speed generates more heat when being rubbed with the copper clad laminate, and the temperature of the drill bit is also higher.

However, the drill bit of the existing backing plate is easy to slip and move in the drilling process, the amount of scraps adhered to the drill bit is large, and the drilling efficiency is poor.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide an oil backing plate. This oil backing plate simple operation can also help the drill bit location for the drill bit is difficult to the skew during drilling, improves the precision of drilling.

The utility model discloses the above-mentioned problem that will solve is through following technical scheme in order to realize:

an oily base plate comprises a base plate main body 1 and paper layers bonded at the upper end and the lower end of the base plate main body; further comprising: through holes penetrating the pad main body and the paper layer respectively; the through holes comprise a first sub through hole and a second through hole, and the first sub through hole and the second through hole are symmetrically positioned on the inner wall of the through hole; and the lubricating layer is fixed on the inner walls of the first sub-through hole and the second through hole.

Preferably, the lubricating layer is made of eleostearic acid.

Preferably, the first sub-through hole comprises a first straight channel, a second straight channel and a first guide channel, the first guide channel is positioned at the inner top of the paper layer at the upper end, the first straight channel is communicated with the bottom of the first guide channel, the second straight channel is communicated with the bottom of the first straight channel, and the first straight channel, the second straight channel and the first guide channel are funnel-shaped.

Preferably, the inner diameter of the second straight passage is less than or equal to the inner diameter of three-quarters of the first straight passage.

Preferably, the second through hole comprises a third straight channel, a second guide channel and a fourth straight channel, the second guide channel is positioned at the bottom in the paper layer at the lower end, the third straight channel is communicated with the upper end of the second guide channel, the fourth straight channel is communicated with the upper end of the third straight channel and is communicated with the second straight channel, and the third straight channel, the second guide channel and the fourth straight channel are funnel-shaped.

Preferably, the inner diameter of the fourth straight channel is less than or equal to the inner diameter of three-quarters of the fourth straight channel.

Preferably, a first buffer mechanism is arranged between the through hole and the paper layer, and a second buffer mechanism is arranged between the through hole and the base plate main body.

Preferably, the first buffer mechanism comprises a first support layer, a first buffer bump, a second buffer bump and a second support layer, the first support layer is connected with the base plate main body, the first buffer bump is fixed on the first support layer different from one side of the base plate main body, the second support layer is connected with the through hole, the second buffer bump is fixed on the second support layer different from one side of the through hole, the second buffer bump and the first buffer bump are arranged in a staggered and parallel mode, and a first buffer cavity is formed between the second buffer bump and the first buffer bump.

Preferably, the second buffer mechanism includes a third support layer, a third buffer bump, a fourth buffer bump, and a fourth support layer, the third support layer is connected to the paper layer, the third buffer bump is fixed to the third support layer on a side different from the paper layer, the fourth support layer is connected to the through hole, the fourth buffer bump is fixed to the fourth support layer on a side different from the through hole, the third buffer bump and the fourth buffer bump are arranged in a staggered and parallel manner, and a second buffer cavity is formed between the third buffer bump and the fourth buffer bump.

Preferably, an anticorrosive layer is fixed on the surface of the paper layer, and the anticorrosive layer is an epoxy resin composite material coating body.

Has the advantages that: after the structure of the utility model is adopted, the structure is provided with the base plate main body, the paper layer, the through hole and the lubricating layer, and the through hole, the first branch through hole and the second through hole are arranged through the structure, so that the base plate can be drilled randomly in the forward direction or the reverse direction, the drilling convenience is improved, scraps generated by drilling can be quickly discharged, and the sticking quantity of a drill bit is reduced; the drill bit can be positioned by the aid of the lubricating layer, so that the drill bit is not prone to shifting during drilling, and drilling accuracy is improved.

Drawings

Fig. 1 is a schematic view of the main structure of an oil pad according to the present invention.

Fig. 2 is a schematic view of the AA cross-sectional structure of fig. 1.

Fig. 3 is an enlarged schematic view of part B of fig. 2.

Fig. 4 is an enlarged schematic view of a portion C of fig. 2.

In FIGS. 1-4: 1-a pad body; 2-a paper layer; 3-an anticorrosive layer; 4-a through hole; 5-a first sub-via; 6-a second via; 7-a first straight channel; 8-a second straight channel; 9-a first guide channel; 10-a third straight channel; 11-a second guide channel; 12-a fourth straight channel; 13-a first buffer mechanism; 14-a second buffer mechanism; 15-a first support layer; 16-a first buffer bump; 17-a second buffer bump; 18-a second support layer; 19-a first buffer cavity; 20-a third support layer; 21-a third buffer bump; 22-a fourth buffer bump; 23-a fourth support layer; 24-a second buffer cavity; 25-lubricating layer.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific examples, which are not intended to limit the invention in any manner.

Example 1:

an oil-based pad as shown in fig. 1-2 comprises a pad body 1 and paper layers 2 bonded to the upper and lower ends of the pad body 1; further comprising: through holes 4, the through holes 4 respectively penetrate through the base plate main body 1 and the paper layer 2; the through hole 4 comprises a first sub-through hole 5 and a second through hole 6, and the first sub-through hole 5 and the second through hole 6 are symmetrically positioned on the inner wall of the through hole 4; and the lubricating layer 25 is fixed on the inner walls of the first through hole 5 and the second through hole 6.

In the embodiment, through the structure of the through hole, the first sub-through hole and the second through hole, the through hole can be drilled randomly from the forward direction or the reverse direction of the base plate, so that the drilling convenience is improved, scraps generated by drilling can be quickly discharged, and the sticking quantity of a drill bit is reduced; the drill bit can be positioned by the aid of the lubricating layer, so that the drill bit is not prone to shifting during drilling, and drilling accuracy is improved.

Example 2:

the oil base plate shown in fig. 1 to 4 includes all the technical features of embodiment 1, the lubricating layer 25 is made of tung oil acid, and the lubricating layer of tung oil acid can better position the drill bit, further reduce the deviation of the drill bit and provide the accuracy of drilling;

specifically, the first sub-through hole 5 comprises a first straight channel 7, a second straight channel 8 and a first guide channel 9, the first guide channel 9 is positioned at the inner top of the paper layer 2 at the upper end, the first straight channel 7 is communicated with the bottom of the first guide channel 9, the second straight channel 8 is communicated with the bottom of the first straight channel 7, the second straight channel 8 and the first guide channel 9 are funnel-shaped, a drill is guided by the arc-shaped first guide channel to position the drill, and the first straight channel and the second straight channel guide the drill in a directional manner, so that the running speed and the smoothness of the drill can be improved, and the drilling precision can be improved;

specifically, the inner diameter of the second straight channel 8 is less than or equal to the inner diameter of three-quarters of the first straight channel 7, and the second straight channel and the first straight channel with reasonable and appropriate sizes can ensure that the drill bit can be orderly pushed, and meanwhile, drilling waste chips can be quickly discharged as much as possible;

specifically, the second through hole 6 comprises a third straight channel 10, a second guide channel 11 and a fourth straight channel 12, the second guide channel 11 is positioned at the inner bottom of the paper layer 2 at the lower end, the third straight channel 10 is communicated with the upper end of the second guide channel 11, the fourth straight channel 12 is communicated with the upper end of the third straight channel 10, the fourth straight channel 12 is communicated with the second straight channel 8, the third straight channel 10, the second guide channel 11 and the fourth straight channel 12 are funnel-shaped, the drill is guided to be positioned and drilled through the arc-shaped second guide channel, and then the third straight channel and the fourth straight channel are directionally guided, so that the running speed and the smoothness of the drill can be improved, and the drilling precision can be improved; the fourth straight channel is communicated with the second straight channel, so that the random drilling from the forward direction or the reverse direction of the base plate can be better realized, the drilling convenience is improved, and the discharge speed of drilling scraps is improved;

specifically, the inner diameter of the fourth straight passage 12 is less than or equal to the inner diameter of three-quarters of the fourth straight passage 12, and the third straight passage and the fourth straight passage with reasonable and proper sizes can ensure the ordered advancement of drilling and simultaneously can also ensure that drilling waste chips can be quickly discharged as much as possible;

specifically, a first buffer mechanism 13 is arranged between the through hole 4 and the paper layer 2, a second buffer mechanism 14 is arranged between the through hole 4 and the base plate main body 1, and partial impact stress can be buffered in the process of drilling by a drill bit through mutual matching of the first buffer mechanism and the second buffer mechanism, so that the paper layer and the base plate main body are protected, and the service life of the base plate is prolonged;

specifically, the first buffer mechanism 13 includes a first support layer 15, a first buffer bump 16, a second buffer bump 17 and a second support layer 18, the first support layer 15 is connected with the pad body 1, the first buffer bump 16 is fixed on the first support layer 15 on the side different from the pad body 1, the second support layer 18 is connected with the through hole 4, the second buffer bump 17 is fixed on the second support layer 18 on the side different from the through hole 4, the second buffer bump 17 and the first buffer bump 16 are arranged in a staggered and parallel manner, and a first buffer cavity 19 is formed between the second buffer bump 17 and the first buffer bump 16, so that external stress generated by diffusion drilling can be quickly decomposed through the second buffer bump, the first buffer bump and the first buffer cavity;

specifically, the second buffer mechanism 14 includes a third support layer 20, a third buffer bump 21, a fourth buffer bump 22 and a fourth support layer 23, the third support layer 20 is connected to the paper layer 2, the third buffer bump 21 is fixed on the third support layer 20 on a side different from the paper layer 2, the fourth support layer 23 is connected to the through hole 4, the fourth buffer bump 22 is fixed on the fourth support layer 23 on a side different from the through hole 4, the third buffer bump 21 and the fourth buffer bump 22 are arranged in a staggered and parallel manner, and a second buffer cavity 24 is formed between the third buffer bump 21 and the fourth buffer bump 22, so that external stress generated by drilling can be quickly decomposed and diffused by the fourth buffer bump, the third buffer bump and the second buffer cavity, and the stability of the structure of the cushion plate is ensured.

Example 3:

an oil base plate as shown in fig. 1-2 comprises all the technical characteristics of the embodiment 1 or 2, wherein an anticorrosive layer 3 is fixed on the surface of the paper layer 2, and an epoxy resin composite material coating body is selected as the anticorrosive layer 2.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings and the terms "first", "second", only for the convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An oily base plate comprises a base plate main body and paper layers bonded at the upper end and the lower end of the base plate main body; it is characterized by also comprising:

through holes respectively penetrating through the paper layer and the base plate main body; the through holes comprise a first sub through hole and a second through hole, and the first sub through hole and the second through hole are symmetrically positioned on the inner wall of the through hole;

and the lubricating layer is fixed on the inner walls of the first sub-through hole and the second through hole.

2. The oil pad as claimed in claim 1, wherein the lubricating layer is made of eleostearic acid.

3. The oil based pad according to claim 1, wherein said first through-hole comprises a first straight passage, a second straight passage and a first guide passage, said first guide passage is located at an inner top portion of the paper layer at the upper end, said first straight passage communicates at a bottom portion of the first guide passage, said second straight passage communicates at a bottom portion of the first straight passage, and said first straight passage, second straight passage and first guide passage are funnel-shaped.

4. The oil pad according to claim 3, wherein the inner diameter of said second straight passage is less than or equal to the inner diameter of three quarters of the first straight passage.

5. The oil based gasket as claimed in claim 3, wherein said second through-hole comprises a third straight passage, a second guide passage and a fourth straight passage, said second guide passage is located at the bottom in the paper layer of the lower end, said third straight passage communicates at the upper end of the second guide passage, said fourth straight passage communicates at the upper end of the third straight passage and said fourth straight passage communicates with the second straight passage, and said third straight passage, said second guide passage and said fourth straight passage are funnel-shaped.

6. The oil pad according to claim 5, wherein said fourth straight passage has an inner diameter less than or equal to three quarters of the inner diameter of the fourth straight passage.

7. The oil base plate according to claim 1, wherein a first buffer mechanism is provided between said through hole and said paper layer, and a second buffer mechanism is provided between said through hole and said base plate main body.

8. The oil pad according to claim 7, wherein the first buffer mechanism comprises a first support layer, a first buffer bump, a second buffer bump and a second support layer, the first support layer is connected to the pad body, the first buffer bump is fixed on the first support layer different from one side of the pad body, the second support layer is connected to the through hole, the second buffer bump is fixed on the second support layer different from one side of the through hole, the second buffer bump and the first buffer bump are arranged in a staggered and parallel manner, and a first buffer cavity is formed between the second buffer bump and the first buffer bump.

9. The oil pad according to claim 7, wherein the second buffer mechanism comprises a third supporting layer, a third buffer bump, a fourth buffer bump and a fourth supporting layer, the third supporting layer is connected to the paper layer, the third buffer bump is fixed on the third supporting layer on a side different from the paper layer, the fourth supporting layer is connected to the through hole, the fourth buffer bump is fixed on the fourth supporting layer on a side different from the through hole, the third buffer bump and the fourth buffer bump are arranged in a staggered and parallel manner, and a second buffer cavity is formed between the third buffer bump and the fourth buffer bump.

10. The oil base plate according to claim 1, wherein an anticorrosive layer is fixed on the surface of the paper layer, and the anticorrosive layer is made of epoxy resin composite material coating.