WO2021017652A1

WO2021017652A1 - Pcb ruler blank

Info

Publication number: WO2021017652A1
Application number: PCT/CN2020/095175
Authority: WO
Inventors: 卫庆永; 陈水水
Original assignee: 德清量丰电子科技股份有限公司
Priority date: 2019-07-26
Filing date: 2020-06-09
Publication date: 2021-02-04
Also published as: CN110411302A

Abstract

Disclosed is a PCB ruler blank, which is manufactured by providing a PCB, cutting the PCB into a ruler blank shape, and successively treating the surface thereof by means of a screen printing process and a hot-press film process. The procedure of the hot-press film process comprises: putting the PCB ruler blank treated by means of the screen printing process into a vacuum hot press, then putting a PP film therein, then carrying out vacuum hot-pressing for the PCB ruler blank and the PP film at 120℃ for 1 hour, such that the PP film is completely attached on the PCB ruler blank after hot-pressing, and cutting the PCB ruler blank treated by means of the hot-press film process on a numerical control cutting machine. The ruler blank made from new materials by means of new processes is low in price, and is not easily scratched, with the text and pattern on the surface being well protected.

Description

A PCB ruler blank

Technical field

The invention relates to the technical field of measuring tools, in particular to a PCB ruler blank.

Background technique

At present, there are two types of digital-display angle ruler blanks on the market: stainless steel ruler blanks and plastic ruler blanks. Various scale blanks are formed by screen printing on the ruler blanks. However, the silk screen is directly printed on the existing ruler blank. The disadvantage of this is that when the ruler blank is rubbed with other things (or the friction between the ruler blank and the rule blank), it is easy to scratch the ruler blank and the screen will also be printed on the scale. Scratching; and the cost of stainless steel ruler blank is too high and difficult to process, and the surface of the plastic ruler blank is easy to scratch and the scale of the ruler blank is blurred.

Summary of the invention

The present invention is to solve the problems existing in the existing stainless steel ruler blank and plastic ruler blank, and provides a PCB ruler that uses the existing material as the ruler blank and performs silk-screening on the ruler blank and further processing to protect the silk-printed pattern. Billet.

In order to achieve the above-mentioned object, the present invention adopts the following technical solutions: a PCB ruler, the ruler is a PCB board, and after the PCB board is cut into the shape of the ruler, the surface is processed by screen printing and hot pressing. Film process, among which, the hot pressing film process is as follows: Put the PCB ruler processed by the screen printing process into a vacuum hot press, then put the PP film, and then carry out the ruler and the PP film for 1 hour 120 ℃ vacuum hot pressing, after hot pressing, the PP film will be completely attached to the PCB board, and the PCB board ruler after the hot pressing film process is processed is cut on the CNC cutting machine. The main function of PP film (glass fiber film) is to protect the scale lines on the ruler blank, and at the same time, it has a good anti-scratch effect; the PCB board and the PP film are bonded together by the vacuum hot pressing process to protect the surface of the ruler, Advantages such as prolonging service life and increasing hand feeling.

Preferably, the PP film is a polypropylene film. PP film is polypropylene film. This kind of film has good insulation properties and is widely used in electrical insulation. The material is also relatively soft. It can be made very thin. It is also used in blister trays, but this material There are also many subdivisions, through modification, adding additives, flame retardant, packaging grade, etc., and the price is not expensive.

Preferably, in the process of the hot pressing film process, the vacuum hot pressing machine is equipped with two toolings, the upper and lower toolings, the PCB board is placed in the lower tooling, then the adhesive and semi-cured rubber are put on, and then the PP film is put in, and finally The upper tooling is pressed against the lower tooling, and the vacuum hot pressing process is performed.

Preferably, the PCB ruler blank is used to make a measuring rule with scale lines, and the measuring rule includes an angle ruler, a straight ruler, and a square ruler. The PCB ruler blank of this scheme can be made into a variety of ruler blanks for making scale lines. The ruler blanks used for measurement are particularly suitable. The measurement rulers include angle rulers, straightedges, and squares.

This solution uses PCB material to make the ruler blank (PCB board has not been used to make the ruler blank on the market). Using this material to make the ruler blank has the following advantages: 1. Easy to process; 2. Surface friction resistance, not easy to leave Scratches; 3. Strong material texture; 4. Long service life. PCB board, also known as printed circuit board, is a provider of electrical connection of electronic components. According to the number of circuit boards, it can be divided into single-sided, double-sided, four-layer, six-layer and other multilayer circuit boards. Blank material.

Therefore, the present invention has the following beneficial effects: the rule blank is made with a new material and a new process, the manufactured rule blank is cheap, and the surface character pattern can be well protected, and it is not easy to be scratched.

Detailed ways

A kind of PCB ruler blank, the ruler blank is a PCB board. After the PCB board is cut into the ruler blank shape, the surface is processed by the screen printing process and the hot pressing film process. The hot pressing film process is: screen printing The processed PCB board ruler is put into the vacuum hot press, and then the PP film is put in, and then the ruler and the PP film are vacuum hot pressed at 120°C for 1 hour. After hot pressing, the PP film will be completely attached to the PCB board. Above, the PCB ruler blank after the hot pressing process is processed on the CNC cutting machine;

PP film is polypropylene film;

In the process of hot pressing film processing, the vacuum hot press is equipped with two upper and lower toolings. After placing the PCB board in the lower tooling, put on the adhesive and semi-cured rubber, then put the PP film, and finally press the upper tooling down. Tooling, vacuum hot pressing process.

The specific implementation process is to select the PCB board and cut the shape to include at least one ruler blank, and then screen-print the entire PCB board to make silk-screen scales and letters on the ruler blank; put the silk-screened ruler blank into a vacuum The hot press, then insert the PP film (glass fiber film), and then heat the ruler and the PP film for 1 hour at 120°C in vacuum. After hot pressing, the PP film will be completely attached to the PCB to protect the silk screen while reducing friction Scratches left on the ruler blank; cut the hot-pressed PCB board on a CNC cutting machine to cut into the correct size of the ruler blank;

The processed PCB board can be made into a variety of scale blanks, including angle rulers, straightedges, and square rulers.

Claims

A PCB ruler blank, characterized in that the ruler blank is a PCB board. After the PCB board is cut into a ruler blank shape, the surface of the PCB is processed by a screen printing process and a hot pressing film process. The film process is as follows: Put the PCB ruler processed by the screen printing process into a vacuum hot press, then put the PP film, and then heat the ruler and the PP film for 1 hour at 120°C in vacuum and hot press. Afterwards, the PP film will be completely attached to the PCB board, and the PCB ruler blank after the hot pressing film process is processed is cut on the CNC cutting machine.
The PCB ruler according to claim 1, wherein the PP film is a polypropylene film.
The PCB ruler blank according to claim 1, characterized in that, in the process of the hot pressing film process, the vacuum hot press is provided with two upper and lower toolings, and the PCB board is placed in the lower tooling and then put on The semi-cured rubber is used for bonding, then the PP film is put in, and finally the upper tooling is pressed against the lower tooling for vacuum hot pressing.
The PCB ruler blank according to claim 1, wherein the PCB ruler blank is used to make a measuring ruler with scale lines, and the measuring ruler includes an angle ruler, a straight ruler, and a square ruler.