CN101594745B

CN101594745B - Improved structure of registration of upper and lower films and electronic circuit board

Info

Publication number: CN101594745B
Application number: CN2008101224451A
Authority: CN
Inventors: 杨雪林
Original assignee: JIANGSU SUHANG ELECTRONIC CO Ltd
Current assignee: JIANGSU SUHANG ELECTRONIC CO Ltd
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2011-11-02
Anticipated expiration: 2028-05-28
Also published as: CN101594745A

Abstract

The invention discloses an improved contraposition structure of upper and lower filins and an electronic circuit board; wherein, the upper and lower filins are respectively fixed onto the upper and lower surfaces of the electronic circuit board in a contraposition manner, at least the four corners of the upper filin are respectively provided with a first contraposition hole, at least the four corners of the lower filins are respectively provided with a second contraposition hole; the electronic circuit board is provided with third and fourth contraposition holes which are corresponding to the first and second contraposition holes, the first and third contraposition holes are correspondingly superposed and communicated with each other, the second and fourth contraposition holes are correspondingly superposed and communicated with each other; pin ends of eight contraposition pins are correspondingly fixed across the corresponding communicated first, third contraposition holes and the second, fourth contraposition holes; bottom plates of the contraposition holes cover the surface of the upper and lower filin. The invention can easily and directly finish the contraposition technology by directly correspondingly sheathing the upper and lower filin on the contraposition fins in the third and fourth contraposition holes on the circuit board; and the upper and lower filins are respectively fixed on the electric circuit board, which can ensure that the upper and lower filins do not break off the electric circuit board during the subsequent exposal process, further facilitate the subsequent operation in the manufacture process of the electric circuit board.

Description

The contraposition structure-improved of the upper and lower film and electronic circuit board

Technical field

The present invention relates to the aligning structure of a kind of electronic circuit board and the upper and lower film.

Background technology

The contraposition of the conditional electronic wiring board and the upper and lower film has following two kinds:

1. rely on the CCD camera lens of fully automatic exposure machine will deceive the position of designing on marker graphic on the film (pattern mark) and the pcb board same position, hole and carry out automatic contraposition of while;

2. the figure that will deceive on the film copies on the brown diazo sheet (diazo film), utilize the translucent character of brown diazo sheet the position of designing on marker graphic (pattern mark) and the pcb board same position, hole to be aligned by artificial naked eyes, finish eight artificial contrapositions of the film on two sides, four angles successively, the use of a common exposure machine, needs three to four-player is finished, the one man operation exposure machine, two to three people's contrapositions.

The tradition contraposition need drop into a large amount of equipment funds if use the fully automatic exposure machine to carry out automatic contraposition, and the such technique of counterpoint production efficiency of artificial contraposition is low, Aligning degree is low, cost of idleness if the use manual exposure machine carries out.

Summary of the invention

In order to overcome above-mentioned defective, the invention provides the contraposition structure-improved of a kind of upper and lower film and electronic circuit board, the contraposition structure-improved of this upper and lower film and electronic circuit board can make the upper and lower film and the electronic circuit board contraposition is easy, precision is high and cost is lower.

The present invention for the technical scheme that solves its technical problem and adopt is:

On, the contraposition structure-improved of the following film and electronic circuit board, comprise electronic circuit board, the last film and the following film, the last film, the following film respectively contraposition be fixed in electronic circuit board on, below, be respectively equipped with first registration holes on four angles of the last film, be respectively equipped with second registration holes on four angles of the following film, electronic circuit board is provided with and described first, the 3rd of two registration holes correspondences, four registration holes, first of described correspondence position, three registration holes overlap and communicate, second of described correspondence position, four registration holes overlap and communicate, being provided with eight alignment pin correspondences again fastens in first, three registration holes and second, in four registration holes, alignment pin is made up of chassis and pin end, the pin end is fixed on the chassis, the pin end of alignment pin fasten respectively in correspondence communicate first, three registration holes and second, in four registration holes, the chassis of alignment pin is covered on the correspondence, the surface of the following film.

The invention has the beneficial effects as follows: during use, the direct correspondence of the upper and lower film that only needs to load onto alignment pin is inserted in third and fourth registration holes on the wiring board can finish contraposition, can easily directly finish technique of counterpoint, therefrom find out, the manually contraposition with the naked eye of this example, but effectively utilizing cooperating of alignment pin and registration holes, the efficiency and precision and the cost that improve contraposition widely are lower; And after the upper and lower film is individually fixed in circuit board, can guarantee that the upper and lower film can not come off with circuit board in the post-exposure process, more help the subsequent operation in the process for manufacturing circuit board.

Description of drawings

Fig. 1 is a schematic diagram of the present invention.

Embodiment

Embodiment: on a kind of, the contraposition structure-improved of the following film and electronic circuit board, comprise electronic circuit board 2, the last film 1 and the following film 3, the last film 1, the following film 3 respectively contraposition be fixed in electronic circuit board 2 on, below, be respectively equipped with first registration holes 5 on four angles of the last film 1, be respectively equipped with second registration holes 8 on four angles of the following film 3, electronic circuit board is provided with and described first, two registration holes 5, the 3rd of 8 correspondences, four registration holes 6,7, first of described correspondence position, three registration holes 5,6 coincidences communicate, second of described correspondence position, four registration holes 8,7 coincidences communicate, be provided with eight alignment pin 4 again, alignment pin 4 is made up of chassis 11 and pin end 10, pin end 10 is fixed on the chassis 11, the pin end 10 of alignment pin 4 fasten respectively in correspondence communicate first, three registration holes 5,6 and second, four registration holes 8, in 7, the chassis 11 of alignment pin 4 is covered on the correspondence, the following film 1,3 surface.

This routine manufacturing process is:

Draw the film with light commonly used, the position, hole of its figure and electronic circuit board (PCB) (this Kong Feiben example the described the 3rd, four registration holes, but the position, hole on the wiring board) figure is corresponding one by one, drawing at the last film four jiaos can be by the circular pattern of special-purpose film perforating press identification, go out corresponding first registration holes by special-purpose film perforating press then, the first registration holes diameter is got 2.0mm in this example, then alignment pin is loaded onto, the pin end diameter of alignment pin is got 1.95mm in this example, the height of pin end is generally 1.0mm, sticking transparent adhesive tape on the chassis of alignment pin is bonded into one itself and the last film, finish the bookbinding of the alignment pin of four first registration holes successively, just finished the making of last film band alignment pin, the making of following film band alignment pin is identical with the last film, no longer describes in detail.

Third and fourth registration holes on the electronic circuit board in this example (PCB) gets out in the position of alignment pin correspondence, the diameter 2.05mm of third and fourth registration holes, and third and fourth registration holes its aperture after finishing hole metallization through heavy copper plating is 2.0mm.

The concrete grammar of this example alignment pin contraposition in realizing exposure is:

During exposure, the following film of stapled alignment pin is placed on the exposure glass plate, paste fixingly with adhesive tape, then the 4th registration holes correspondence on the electronic circuit board (PCB) of need exposure is pressed on the alignment pin, finish down film contraposition.The 3rd registration holes correspondence that the last film of stapled alignment pin is aimed on the electronic circuit board is pressed into, and finishes the contraposition of the film.Can shut shutter then and push and expose, finish the location.

Below be to adopt some data of alignment pin technique of counterpoint and common artificial technique of counterpoint to compare:

Claims

1. on one kind, the contraposition structure-improved of the following film and electronic circuit board, comprise electronic circuit board, the last film and the following film, the last film, the following film respectively contraposition be fixed in electronic circuit board on, below, it is characterized in that: upward be respectively equipped with first registration holes on four angles of the film, be respectively equipped with second registration holes on four angles of the following film, electronic circuit board is provided with and described first, the 3rd of two registration holes correspondences, four registration holes, first of described correspondence position, three registration holes overlap and communicate, second of described correspondence position, four registration holes overlap and communicate, being provided with eight alignment pin correspondences again fastens in first, three registration holes and second, in four registration holes, alignment pin is made up of chassis and pin end, the pin end is fixed on the chassis, the pin end of alignment pin fasten respectively in correspondence communicate first, three registration holes and second, in four registration holes, the chassis of alignment pin is covered on the correspondence, the surface of the following film.