CN211698590U

CN211698590U - Matrix light source of LED exposure machine

Info

Publication number: CN211698590U
Application number: CN202020663848.3U
Authority: CN
Inventors: 廖湛军; 陈海纯
Original assignee: SHENZHEN HOPESEARCH PCB MANUFACTURING CO LTD
Current assignee: SHENZHEN HOPESEARCH PCB MANUFACTURING CO LTD
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-10-16
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses a matrix light source of an LED exposure machine, which comprises a box body, a power supply, a plurality of radiating supports and a plurality of light bars, wherein the power supply, the radiating supports and the light bars are all arranged in the box body; the power with the lamp strip is connected, many lamp pearls of having arranged on the lamp strip, the lamp pearl includes that the wavelength is 365 nm's lamp pearl, the wavelength is 395 nm's lamp pearl, the wavelength is 405 nm's lamp pearl and the wavelength is 436 nm's lamp pearl. The problem of poor exposure can be improved to this application.

Description

Matrix light source of LED exposure machine

Technical Field

The utility model relates to a LED exposure machine technical field especially relates to a matrix light source of LED exposure machine.

Background

In the PCB manufacturing process, an important link is to utilize an optical exposure method to carry out image transfer between film line printed boards, an exposure machine is a key device for realizing the image transfer, and the quality, the precision, and the like of a printed circuit board are greatly dependent on the quality of exposure.

The light source wavelength of the LED exposure machine in the market is single, and the LED exposure machine can meet the requirement of horizontal exposure of a board surface; for BGA large copper surface windowing and peripheral bonding pads arrangement, height difference exists at the position, and poor exposure is easily caused by copper surface windowing; for the height difference of a product embedded with a copper block of 0.1-0.2mm, the film and the local part of the plate surface can not be tightly attached, so that poor exposure is caused, the window opening is greatly reduced, and the upper plate or the contact with the pad is poor; improvement can be achieved by controlling the exposure energy, and therefore improvement is attempted from the light source; the matrix light source wavelength of the existing LED exposure machine has two wavelength ratios or one light source ratio, and does not cover the absorption wavelength range of the printing ink.

SUMMERY OF THE UTILITY MODEL

The utility model provides a matrix light source of LED exposure machine aims at solving above-mentioned problem.

The matrix light source of the LED exposure machine comprises a box body, a power supply, a plurality of radiating supports and a plurality of light bars, wherein the power supply, the radiating supports and the light bars are all arranged in the box body; the power with the lamp strip is connected, many lamp pearls of having arranged on the lamp strip, the lamp pearl includes that the wavelength is 365 nm's lamp pearl, the wavelength is 395 nm's lamp pearl, the wavelength is 405 nm's lamp pearl and the wavelength is 436 nm's lamp pearl.

The utility model discloses a matrix light source of LED exposure machine, also include at least one radiator fan, the radiator fan is set up on a lateral wall of the length direction of the box; the side of the box body, which is opposite to the cooling fan, is provided with a plurality of through hole parts.

The utility model discloses an in the matrix light source of LED exposure machine, radiator fan's quantity is two, two radiator fan about the symmetry both sides of power.

The utility model discloses an among the matrix light source of LED exposure machine, still including set up in lens strip on the lamp strip, lens strip includes a plurality of lens portions, lens portion with lamp pearl one-to-one on the lamp strip.

The utility model discloses an among the matrix light source of LED exposure machine, the heat dissipation support is the I shape support, a terminal surface and the diapire of box of I shape support are connected, another terminal surface of I shape support is used for installing the lamp strip.

The utility model discloses an among the matrix light source of LED exposure machine, be provided with the fluting portion on the heat dissipation support, fluting portion is used for walking the line.

The utility model discloses an in the matrix light source of LED exposure machine, still be provided with the ventilation hole on the heat dissipation support.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application has designed a matrix light source of LED exposure machine, and the lamp pearl wavelength includes that 365 nm's lamp pearl, wavelength are 395 nm's lamp pearl, wavelength are 405 nm's lamp pearl and wavelength are 436 nm's lamp pearl, improve the problem of bad exposure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural view of a part of an LED exposure machine according to an embodiment of the present invention;

fig. 2 is another schematic structural diagram of the LED exposure machine according to the embodiment of the present invention.

Description of reference numerals:

10. a box body; 11. a through hole portion; 20. a power source; 30. a heat dissipation bracket; 40. a light bar; 41. a lamp bead; 50. a heat radiation fan; 60. a lens strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Please refer to fig. 1 and fig. 2, the utility model discloses a matrix light source of LED exposure machine, including box 10, power 20, a plurality of heat dissipation support 30, a plurality of lamp strip 40, power 20, heat dissipation support 30 and lamp strip 40 all set up in box 10, power 20 is connected with lamp strip 40 for lamp strip 40 supplies power, it has a plurality of lamp pearls 41 to arrange on lamp strip 40, lamp pearl 41 includes that the wavelength is 365 nm's lamp pearl, the wavelength is 395 nm's lamp pearl, the wavelength is 405 nm's lamp pearl and the wavelength is 436 nm's lamp pearl. In order to fully cover the absorption wavelength range of the ink, the absorption wavelength range of the ink is 240-410nm, the sensitive absorption wavelength of the ink is 350-365nm, different matching test structures are integrated, the resolution of different inks and the practical windowing data after the development of BGA are tested in a test, and the optimal matching of the lamp beads is found to be the lamp beads with the wavelengths of 365nm, 395nm, 405nm and 436nm of four light sources. And because the height difference of the product can attenuate the wavelength, beads with the wavelength of 436nm are added, and the wavelength is not lower than the highest wavelength of the printing ink after attenuation. The problem of bad exposure that produces because the difference in height has been solved, the reworking that has reduced bad exposure and has turned over and wash and scrap, has improved the yield and the production efficiency of board. In this embodiment, the wavelength of district lamp pearl is 405nm, and the wavelength of district lamp pearl is 436nm in D, and district lamp pearl 365nm in B, the wavelength of district lamp pearl is 395nm in C. By mainly using the lamp beads with the wavelengths of 365nm and 395nm and using the lamp beads with the wavelengths of 405nm and 436nm as auxiliary exposure, the exposure effect is improved, and the problem of poor exposure caused by wavelength attenuation is solved.

In an optional embodiment, the exposure light source of the present application further includes at least one heat dissipation fan 50, the heat dissipation fan 50 is disposed on a side wall of the case 10 in the length direction, the side of the case 10 facing the heat dissipation fan 50 is provided with a plurality of through holes 11, and through the arrangement of the through holes 11, the convection exchange is performed between the external cold air and the hot air in the case 10, so as to realize the cooling in the case 10, thereby increasing the service life of the lamp bead. In some embodiments, the number of the heat dissipation fans 50 is set to two, and the two heat dissipation fans 50 are symmetrically disposed with respect to the power supply 20, that is, the power supply 20 is disposed between the two heat dissipation fans 50, by which the ventilation performance of the cabinet 10 is increased and the temperature inside the cabinet 10 is more uniform.

In an optional embodiment, the exposure machine light source of the present application further includes a lens strip 60 disposed on the light bar 40, and the lens strip 60 includes a plurality of lens portions, and the lens portions correspond to the light beads on the light bar 40 one to one. The lens strip 60 may be positioned by providing a plurality of pin portions on the lens and providing socket portions corresponding to the pin portions on the light bar 40.

In an alternative embodiment, the heat dissipating bracket 30 is an i-shaped bracket, one end surface of the i-shaped bracket is connected to the bottom wall of the box 10, and the other end of the i-shaped bracket is used for mounting the light bar 40. The specific fixing mode can be screw fixing and the like. The heat dissipation bracket 30 is further provided with a slotted portion for wiring. Specifically, I conveniently walk the line through setting up the fluting portion to passing through wired connection between every lamp strip 40 and power 20. The slotted parts can be arranged at two ends of the length of the radiating bracket 30, so that the electric wires between the light bar 40 and the power supply 20 can pass through one side close to the box body 10, and the installation is convenient; and the slotted portion facilitates air convection. In some embodiments, in order to further increase the heat dissipation performance, a vent hole is further disposed on the heat dissipation bracket 30, and the air blown by the fan may directly flow out of the case 10 through the vent hole, or may flow out of the case 10 through the slotted portion, so as to increase the heat dissipation performance of the heat dissipation bracket 30.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The matrix light source of the LED exposure machine is characterized by comprising a box body, a power supply, a plurality of radiating supports and a plurality of light bars, wherein the power supply, the radiating supports and the light bars are all arranged in the box body; the power with the lamp strip is connected, many lamp pearls of having arranged on the lamp strip, the lamp pearl includes that the wavelength is 365 nm's lamp pearl, the wavelength is 395 nm's lamp pearl, the wavelength is 405 nm's lamp pearl and the wavelength is 436 nm's lamp pearl.

2. The matrix light source of LED exposure machine of claim 1, further comprising at least one heat dissipation fan disposed on a side wall of the case in the length direction; the side of the box body, which is opposite to the cooling fan, is provided with a plurality of through hole parts.

3. The matrix light source of LED exposure machine of claim 2, wherein the number of the heat dissipation fans is two, and the two heat dissipation fans are symmetrical to each other about the power supply.

4. The matrix light source of the LED exposure machine of claim 3, further comprising a lens strip arranged on the light bar, wherein the lens strip comprises a plurality of lens portions, and the lens portions correspond to the lamp beads on the light bar in a one-to-one manner.

5. The matrix light source of the LED exposure machine of claim 1, wherein the heat dissipation bracket is an I-shaped bracket, one end face of the I-shaped bracket is connected with the bottom wall of the box body, and the other end face of the I-shaped bracket is used for mounting the light bar.

6. The matrix light source of the LED exposure machine according to claim 1, wherein the heat dissipation bracket is provided with a slotted portion, and the slotted portion is used for routing.

7. The matrix light source of LED exposure machine of claim 3, wherein the heat dissipation bracket is further provided with ventilation holes.