WO2016149902A1

WO2016149902A1 - Pcb board splitting method and related equipment thereof

Info

Publication number: WO2016149902A1
Application number: PCT/CN2015/074927
Authority: WO
Inventors: 徐波
Original assignee: 华为技术有限公司
Priority date: 2015-03-24
Filing date: 2015-03-24
Publication date: 2016-09-29
Also published as: CN106465544B; CN106465544A

Abstract

A PCB board splitting method, comprising: placing inclined surface PCB splicing boards (201, 301) between at least two tool retaining walls on a PCB board splitting tool (30), wherein the first side surfaces (304) and the second side surfaces (305) opposite to the first side surfaces (304) of the inclined surface PCB splicing boards (201, 301) are all inclined surfaces, the first side surfaces (304) are abutted to the first tool retaining wall (302), the second side surfaces (305) are abutted to the second tool retaining wall (303), and the first tool retaining wall (302) and the second tool retaining wall (303) are two of at least two tool retaining walls (303); and cut the inclined surface PCB splicing boards (201, 301) by using a PCB board splitting machine to obtain PCB single boards (401). The method is used for solving the problems in the traditional PCB board splitting technology of low production efficiency and low product reliability caused by using an adhesive tape for sticking and a grater to carry out polishing.

Description

PCB sub-board method and related equipment

Technical field

The present invention relates to the field of circuit board technology, and in particular to a PCB board method and related equipment.

Background technique

At present, the module products adopt the printed circuit board (PCB) solid connection design. Since the module products often need secondary assembly, under the premise of fierce competition of electronic products, the customer's space requirements are higher and higher, so The precision of the sub-board precision of the module products is also getting higher and higher. The customer requires that the PCB sub-board precision of the module product be controlled within 0.15mm. Since the thickness of the industrial and consumer module PCB is 0.8mm or 1.0mm, the thickness of the on-board module PCB is 1.2mm. Or 1.6mm, the laser sub-board process can not be applied to the module product, in the module product sub-board operation, it is affected by factors such as the board precision PCB processing precision (0.15mm tolerance) and the tooling wall processing precision (0.08mm tolerance). Module products can not design positioning holes. In this case, we can only rely solely on the limit of tooling wall. At present, our PCB board and sub-board tooling walls are right angle design, and the module product board accuracy is difficult to meet customer requirements of 0.15. Mm, module products often appear in the verification process of the PCB sub-board accuracy does not meet the standards affect the product's assembly and reliability.

The existing PCB sub-board technical solution is: affixing adhesive tape on the tooling wall, using the sub-board equipment for the sub-board operation, inspecting the products obtained after the operation, and processing the products that do not meet the specifications by using the boring method. .

However, it is time-consuming to reduce the production efficiency by affixing adhesive tape on the work lock wall and using the boring method for products that do not meet the specifications. In addition, the method of affixing paper and boring is in the process of implementation. Issues related to specifications and levels make product reliability low.

Summary of the invention

Embodiments of the present invention provide a PCB design method for solving the problem of low production efficiency and low product reliability caused by the use of adhesive tape and boring in the existing PCB sub-board technology.

A first aspect of the present invention provides a printed circuit board PCB design method, including:

Placing a beveled PCB panel between at least two tooling walls on the PCB sub-tool, the first side of the beveled PCB panel and the second side opposite the first side are both beveled, First One side abuts against the first work load wall, the second side abuts against the second work block wall, and the first work block wall and the second work block wall are the at least two work blocks Two in the wall;

The PCB board is obtained by cutting the beveled PCB board with a PCB board machine.

With reference to the first aspect of the present invention, in the first embodiment of the first aspect of the present invention,

An angle of the first oblique angle formed by the first side surface and the vertical direction is between 5 degrees and 10 degrees;

The angle of the second bevel formed by the second side and the vertical direction is between 5 and 10 degrees.

With reference to the first embodiment of the first aspect of the present invention, in the second embodiment of the first aspect of the present invention,

The first oblique angle is equal to the second oblique angle.

With reference to the second embodiment of the first aspect of the present invention, in the third embodiment of the first aspect of the present invention,

The cross section of the beveled PCB panel is an inverted trapezoid, and the oblique side of the cross section of the beveled PCB panel corresponds to the first side or the second side.

With reference to the first aspect of the present invention, the first embodiment of the first aspect of the present invention, the second embodiment of the first aspect of the present invention, or the third embodiment of the first aspect of the present invention, in the fourth embodiment of the first aspect of the present invention,

The side of the tooling wall for abutting the first side or the second side is a slope, and the angle of the slope formed by the slope with the vertical direction is between 1.5 and 2.5 degrees.

With reference to the fourth embodiment of the first aspect of the present invention, in the fifth embodiment of the first aspect of the present invention,

The tooling wall has a trapezoidal cross section.

In conjunction with the first aspect of the present invention, in the sixth embodiment of the first aspect of the present invention, the placing the beveled PCB panel between the at least two tooling walls on the PCB sub-tooling comprises:

The angled milling cutter is used to cut the edge of the ordinary PCB, and the first side and the second side of the ordinary PCB are processed into a slope to obtain the inclined PCB.

With reference to the sixth embodiment of the first aspect of the present invention, in the seventh embodiment of the first aspect of the present invention,

The angle cutter has an edge angle of between 5 and 10 degrees.

With reference to the first aspect of the present invention, in the eighth embodiment of the first aspect of the present invention,

The third side of the beveled PCB panel and the fourth side opposite to the third side are both inclined surfaces, and the inclined PCB board is placed between at least two tooling walls on the PCB boarding machine ,include:

Abutting the third side on the third working block wall, and the fourth side is abutting in the fourth tooling Retaining wall, the third tooling wall and the fourth tooling wall are two of the at least two tooling walls;

The first, second, third and fourth tooling walls enclose a rectangle having the same shape as the beveled PCB panel.

With reference to the first aspect of the present invention, in a ninth embodiment of the first aspect of the present invention,

The thickness of the beveled PCB panel is between 0.8 mm and 1.6 mm.

As can be seen from the above, the beveled PCB panel is placed between the at least two tooling walls on the PCB sub-tool, the first side of the beveled PCB panel and the second side opposite to the first side are beveled, first The side abutting is on the first tooling wall, the second side is abutting on the second tooling wall, and the first tooling wall and the second tooling wall are two of the at least two tooling walls, using the PCB. The board machine cuts the PCB board to obtain the PCB board. Since the side of the slope PCB board is a slope, in the process of cutting the PCB board by the PCB board machine, the error in the cutting process can be effectively eliminated to the accuracy of the PCB board. The impact increases the efficiency of production and improves the reliability of the product.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments and the prior art description will be briefly described below. Obviously, the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those skilled in the art without any inventive effort.

FIG. 1 is a flowchart of a PCB design method according to an embodiment of the present invention;

2 is a schematic view of a beveled PCB panel according to an embodiment of the present invention;

3 is a schematic diagram of cutting a beveled PCB panel by using a PCB splitter according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a PCB board obtained by cutting a beveled PCB board using a PCB boarding machine according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is an embodiment of the invention, but not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

The detailed description will be respectively made below through specific embodiments.

Referring to FIG. 1 , an embodiment of the present invention improves a PCB design method, which may include:

101. Place a beveled PCB panel between at least two tooling retaining walls on the PCB sub-tooling tool;

In the embodiment of the present invention, a beveled PCB panel that needs to be divided is provided. As shown in FIG. 2, the beveled PCB panel 201 is obtained by cutting the ordinary PCB panel 20 by the angle milling cutter 202, and the angle of the blade of the angle milling cutter 20 is inclined. Between 5 degrees and 10 degrees, the side surface of the beveled PCB panel 201 can be obtained as an oblique angle, the angle of the oblique angle is between 5 and 10 degrees, and the oblique side of the inverted ladder pattern of the beveled PCB panel 201 is 2013 and The oblique side 2014 corresponds to the first side or the second side of the beveled PCB panel 201, and L is the difference between the length of the lower base 2011 and the length of the upper base 2012 in the inverted trapezoidal figure of the cross section of the beveled PCB panel 201, L The relationship between the thickness of the inclined PCB board and the inclined surface is shown in Table 1. The general PCB processing tolerance is 0.15mm, the angle of the side of the inclined PCB board is 5 degrees to 10 degrees, and the thickness of the inclined PCB board is When 0.8mm, the value of L is 0.07mm~0.148mm, which can reduce the influence of PCB processing tolerance on the accuracy of product board. When the thickness of the inclined PCB board is 1.0mm, the value of L is 0.0875mm~0.176mm, which can reduce the PCB. The processing tolerance affects the accuracy of the product board; when the thickness of the inclined PCB board is 1.2mm, the value of L is 0.105~0. .211mm can overcome the influence of PCB processing tolerance on the accuracy of product sub-board. When the thickness of the inclined PCB board is 1.6mm, the value of L is 0.14~0.281mm, which can overcome the influence of PCB processing tolerance on the accuracy of product sub-board.

Table 1

As shown in FIG. 3, the beveled PCB panel 301 is placed between the two tooling walls on the PCB sub-tool 30, and the first side 304 of the beveled PCB panel 301 is abutted on the first tooling wall 302. The second side surface 305 is abutted on the second tooling wall 303, and the upper surface of the inclined PCB board is larger than the small surface, and the first tooling wall 302 and the second tooling wall 303 are used to abut the first side 304 or the first The side surface of the two side faces 305 is a sloped surface. The angle of the oblique angle formed by the inclined surface and the vertical direction is between 1.5 degrees and 2.5 degrees. The cross section of the first tooling wall 302 and the second tooling wall 303 is trapezoidal. In addition, the inclined surface PCB The third side of the panel 301 and the fourth side opposite to the third side may be respectively supported by the third tooling wall and the fourth tooling wall, the first tooling wall 302, the second tooling wall 303, and the The three-piece retaining wall and the fourth tooling retaining wall enclose a rectangle having the same shape as the beveled PCB panel.

102. The PCB board machine cuts the inclined PCB board to obtain the PCB board.

In the embodiment of the present invention, as shown in FIG. 3 and FIG. 4, the blade 306 of the PCB splitter performs a cutting operation on the inclined PCB board 301, and the four mutually independent product areas 401 on the inclined PCB board 301 are cut. The four PCB boards 401 are obtained. It should be noted that the inclined PCB board may have multiple independent product areas, and the shape of the product area is not limited herein.

It can be seen from the above that the side surface of the inclined PCB board is a sloped surface, and the angle of the inclined surface is between 5 degrees and 10 degrees. In the process of cutting the inclined surface PCB board to obtain the PCB single board, the board thickness of the inclined PCB board is combined. And the angle of the bevel, the value of the tolerance L of the lower surface of the beveled PCB board can be obtained, according to Relevant experience of the industry, when the value of L is greater than the PCB processing tolerance value, the cutting error of the PCB boarding machine can be effectively eliminated, so that the accuracy of the PCB board is not affected, the production efficiency is improved, and the product is improved. reliability.

In the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment can be referred to the related description of other embodiments.

The method of the exposure and development of the circuit board provided by the embodiment of the present invention has been described in detail above, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art, in light of the spirit of the present invention, are susceptible to variations and substitutions within the scope of the present invention.

Claims

A printed circuit board PCB design method, comprising:

Placing a beveled PCB panel between at least two tooling walls on the PCB sub-tool, the first side of the beveled PCB panel and the second side opposite the first side are both beveled, The first side abuts against the first work load wall, the second side abuts against the second work block wall, and the first work block wall and the second work block wall are the at least two tool sets Two of the retaining walls;

The PCB board is obtained by cutting the beveled PCB board with a PCB board machine.
The method of claim 1 wherein

An angle of the first oblique angle formed by the first side surface and the vertical direction is between 5 degrees and 10 degrees;

The angle of the second bevel formed by the second side and the vertical direction is between 5 and 10 degrees.
The method of claim 2 wherein:

The first oblique angle is equal to the second oblique angle.
The method of claim 3 wherein:

The cross section of the beveled PCB panel is an inverted trapezoid, and the oblique side of the cross section of the beveled PCB panel corresponds to the first side or the second side.
A method according to any one of claims 1 to 4, characterized in that

The side of the tooling wall for abutting the first side or the second side is a slope, and the angle of the slope formed by the slope with the vertical direction is between 1.5 and 2.5 degrees.
The method of claim 5 wherein:

The tooling wall has a trapezoidal cross section.
The method of claim 1 wherein said placing the beveled PCB panel between at least two tooling walls on the PCB sub-tooling comprises:

The angled milling cutter is used to cut the edge of the ordinary PCB, and the first side and the second side of the ordinary PCB are processed into a slope to obtain the inclined PCB.
The method of claim 7 wherein:

The angle cutter has an edge angle of between 5 and 10 degrees.
The method of claim 1 wherein

The third side of the beveled PCB panel and the fourth side opposite to the third side are both inclined surfaces, and the inclined PCB board is placed on at least two tooling walls on the PCB boarding machine Between, including:

Abutting the third side on the third working block wall, and the fourth side is abutting on the fourth working block wall, wherein the third working block wall and the fourth tooling retaining wall are Two of at least two tooling walls;

The first, second, third and fourth tooling walls enclose a rectangle having the same shape as the beveled PCB panel.
The method of claim 1 wherein

The thickness of the beveled PCB panel is between 0.8 mm and 1.6 mm.