CN210986604U

CN210986604U - Strippable blue gel silk screen printing device

Info

Publication number: CN210986604U
Application number: CN201922011090.5U
Authority: CN
Inventors: 陈玲; 张军; 黄江波
Original assignee: Stariver Circuits Fujian Co ltd
Current assignee: Stariver Circuits Fujian Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-10
Anticipated expiration: 2029-11-20

Abstract

A strippable blue gel silk-screen device relates to the field of PCB production and manufacture, and comprises a screen printing plate and a first hollow copper-free base material, wherein the screen printing plate is provided with an opening which is communicated up and down, a silk-screen area of the screen printing plate is positioned in a coverage area of the opening, the first hollow copper-free base material is fixedly attached to the screen printing plate, the opening is positioned in the coverage area of the first hollow copper-free base material, the device uses the hollow copper-free base material to replace gauze positioned on the screen printing plate in the silk-screen area, blue gel can permeate the PCB to be silk-screened through a hollow part, and the thickness of the copper-free base material can be controlled through material selection, so that the effect of increasing the gel retaining amount at the hollow part can be achieved by using the thickness cross section of a plate material, and the strippable blue gel silk-screen can achieve the purpose of meeting the requirement of the thickness of the coating once in the work of silk-screen, the production efficiency is improved, and the product quality is improved.

Description

Strippable blue gel silk screen printing device

Technical Field

The utility model relates to a PCB board manufacturing field specifically relates to a strippable blue gel silk screen printing device.

Background

In the process of assembling electronic components on a client side of a PCB, in order to prevent certain local positions from being not welded, a layer of peelable blue gel needs to be printed on the local part in a silk screen manner and used as the protection of a local solder-resistant coating of the PCB or the electronic components during the assembling process, the thickness of a silk screen of a conventional silk screen printing process can only be controlled to be 0.2-0.35mm, but the PCBA of special protection and long-time multiple reflow soldering and wave soldering processes has welding risks, so that the requirement of higher thickness on the thickness of the protective coating of the peelable blue gel needs to be provided for multiple times of welding or long-time welding processes with special requirements, and the coating is thickened by selecting a silk screen twice in order to meet the requirement, thereby causing bad influence on the production efficiency and quality control.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a strippable blue gel silk screen printing device to when overcoming among the prior art silk screen printing strippable blue gel on the PCB board, once silk screen printing thickness is not enough, for satisfying the coating thickness and need repeated silk screen printing, leads to the low and poor technical defect of quality management and control of production efficiency.

In order to solve the technical problem, the utility model provides a blue glue silk screen printing device of can striping, including half tone and the no copper substrate of first fretwork, the opening that link up from top to bottom is equipped with on the half tone, wherein, the silk screen printing district of half tone is located in the open-ended coverage area, the fixed laminating of the no copper substrate of first fretwork is on the half tone, the opening is located the no copper substrate's of first fretwork coverage area is intra-area.

In the foregoing technical solution, further, a second hollow copper-free substrate is laid in a screen printing area of the screen printing platform, and a hollow pattern of the second hollow copper-free substrate is the same as a hollow pattern of the first hollow copper-free substrate, wherein when the screen printing plate is used for screen printing on the screen printing platform, the hollow pattern of the second hollow copper-free substrate coincides with the hollow pattern of the first hollow copper-free substrate in a vertical direction.

In the technical scheme, furthermore, a limiting plate for fixing the PCB to be silk-screened is arranged around the silk-screening area of the silk-screening platform, and the upper end surface of the limiting plate and the upper end surface of the PCB to be silk-screened are located at the same horizontal height.

In the above technical solution, further, the first hollow copper-free substrate and the second hollow copper-free substrate are made of FR-4 light plates.

8. In the above technical scheme, further, a cushion block is arranged on the screen printing platform, the horizontal height of the upper end surface of the cushion block is 3-5mm higher than that of the upper end surface of the PCB to be processed by screen printing, and when the screen printing plate is used for screen printing on the screen printing platform, the cushion block can be placed between the frame of the screen printing plate and the screen printing platform.

In the above technical solution, further, the shape of the opening is a rectangle similar to but not identical to the screen, a symmetry axis of the opening coincides with a symmetry axis of the screen, the shape of the bottom surface of the first hollow copper-free substrate is a rectangle similar to but not identical to the opening, and each side of the screen, the opening and the first hollow copper-free substrate are parallel to each other and symmetry centers coincide.

In the above technical solution, further, the length of each side of the bottom surface of the first hollow copper-free substrate is less than or equal to 4/5 corresponding to the side length of the screen.

Compared with the prior art, the technical scheme of the utility model following beneficial effect has:

the utility model provides a strippable blue gel silk screen printing device, replace the gauze that is located silk screen printing district intranet version with the copper-free base material of fretwork, strippable blue gel accessible fretwork portion permeates on the PCB board of treating the silk screen printing, because the thickness of no copper substrate can be through the material selection control, consequently, the thickness cross section of usable panel reaches the effect that improves at fretwork portion increase staying gluey volume, thereby can make the PCB board reach the purpose that a silk screen printing satisfies the coating thickness requirement in the work of silk screen printing strippable blue gel, and the production efficiency is improved, and the quality of product is promoted.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described 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 creative efforts.

Fig. 1 is a schematic structural diagram of a peelable blue gel screen printing device provided by the application.

Reference numerals: 1-screen printing plate; 2-a first hollowed-out copper-free substrate; 3-screen printing platform; 4-a second hollowed-out copper-free substrate; 5-a limiting plate; 6-cushion block.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the embodiment of the utility model provides a blue glue silk screen printing device of strippable, including half tone 1 and the copper base material 2 of first fretwork no, the opening that link up from top to bottom is equipped with on half tone 1, wherein, half tone 1's silk screen printing area is located in the open-ended coverage area, the fixed laminating of the copper base material 2 of first fretwork no is on half tone 1, the opening is located the copper base material 2's of first fretwork coverage area is interior.

The embodiment of the utility model provides a strippable blue gel silk screen printing device replaces the gauze that is located silk screen printing district intranet version 1 with first fretwork copper-free substrate 2, and strippable blue gel accessible fretwork portion permeates the PCB board of treating the silk screen printing on, because the thickness of no copper substrate can be controlled through the selection material, consequently, the thickness cross section of usable panel increases the volume of staying gluey on fretwork portion below PCB face to can make the PCB board reach the purpose that a silk screen printing satisfies the coating thickness requirement in the work of silk screen printing strippable blue gel.

In this embodiment, a second hollowed copper-free substrate 4 is laid in the screen printing area of the screen printing platform 3, the hollowed patterns of the second hollowed copper-free substrate 4 are the same as the hollowed patterns of the first hollowed copper-free substrate, wherein when the screen printing plate 1 performs screen printing on the screen printing platform 3, the hollowed patterns of the second hollowed copper-free substrate 4 and the hollowed patterns of the first hollowed copper-free substrate 2 coincide in the vertical direction, and according to the position of the second hollowed copper-free substrate 4 and the position of the hollowed part thereof, the placement position and the angle of the PCB on the screen printing platform 3 can be accurately calibrated, so that the PCB is fixed, the PCB is prevented from directly sliding on the screen printing platform 3, and meanwhile, the second hollowed copper-free substrate 4 can also serve as a standby board for the first hollowed copper-free substrate 1.

In this embodiment, be equipped with around the silk screen printing district of silk screen printing platform 3 and be used for the fixed limiting plate of treating the silk screen printing PCB board, limiting plate 5 surrounding type supports three at least edges of treating the silk screen printing PCB board, the up end of limiting plate and the up end of treating the silk screen printing PCB board are located same level, can prevent to treat the removal of silk screen printing PCB board, make the silk screen printing process more steady.

In this embodiment, the first hollow copper-free substrate 2 and the second hollow copper-free substrate 4 are made of FR-4 light boards.

In the embodiment, the screen printing platform 3 is provided with a cushion block 6, the horizontal height of the upper end surface of the cushion block 6 is 3-5mm higher than that of the upper end surface of the PCB to be screen printed, when the screen printing plate 1 is used for screen printing on the screen printing platform 3, the cushion block 6 can be placed between the frame of the screen printing plate 1 and the screen printing platform 3, the cushion block 6 limits the first hollow copper-free base material 2 at a certain height to meet the preset distance between the first hollow copper-free base material 2 and the PCB to be screen printed, the first hollow copper-free base material 2 is attached to the PCB to be silk-screened by external force to complete silk-screening, after the silk-screening is finished, through the tension effect of silk screen on half tone 1, in time, quick with the copper-free substrate 2 of first fretwork reset, leave the PCB board, in the effectual time quantum that prevents that copper-free substrate 2 of first fretwork from stopping on the PCB board, because the small drunkenness between the device, the harmful effects that bring.

In this embodiment, the shape of the opening is a rectangle similar to but not identical to that of the screen printing plate 1, the symmetry axis of the opening coincides with the symmetry axis of the screen printing plate 2, the shape of the first hollowed copper-free substrate 2 is a rectangle similar to but not identical to that of the opening, and the edges of the screen printing plate 1, the opening and the first hollowed copper-free substrate 2 are respectively parallel to each other and the symmetry centers coincide, so that the reset tension of the silk screen on the screen printing plate 1 is uniform and symmetrical, and the phenomenon that the horizontal displacement component occurs during the reset process of the first hollowed copper-free substrate 2 due to unbalanced tension of the silk screens at two sides cuts rubs the blue gel which is silk-screened on the PCB plate, so that the silk screen is not uniform or the thickness is insufficient is prevented.

In this embodiment, the length of each side of the bottom surface of the first hollow copper-free substrate 2 is less than or equal to 4/5 of the corresponding side of the screen 1, and a necessary screen width is reserved on the screen to meet the stroke requirement in the vertical direction during the screen printing of the first hollow copper-free substrate 2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A strippable blue gel silk-screen device is characterized by comprising a screen printing plate and a first hollow copper-free base material, wherein the screen printing plate is provided with an opening which is communicated up and down, a silk-screen area of the screen printing plate is positioned in a covering area of the opening, the first hollow copper-free base material is fixedly attached to the screen printing plate, and the opening is positioned in the covering area of the first hollow copper-free base material.

2. The peelable blue gel screen printing device according to claim 1, wherein a second hollowed copper-free substrate is laid in the screen printing area of the screen printing platform, and the hollowed pattern of the second hollowed copper-free substrate is identical to the hollowed pattern of the first hollowed copper-free substrate, and when the screen printing plate is used for screen printing on the screen printing platform, the hollowed pattern of the second hollowed copper-free substrate is vertically overlapped with the hollowed pattern of the first hollowed copper-free substrate.

3. The peelable blue gel screen printing device according to claim 2, wherein a limiting plate for fixing the PCB to be screen printed is arranged around the screen printing area of the screen printing platform, and the upper end surface of the limiting plate and the upper end surface of the PCB to be screen printed are located at the same horizontal height.

4. The peelable blue gel screen printing device according to claim 2, wherein the first and second hollow copper-free substrates are made of FR-4 light plates.

5. The apparatus according to claim 1, wherein the screen printing platform is provided with spacers having a horizontal height of 3-5mm higher than the horizontal height of the upper end of the PCB to be screen printed, and the spacers can be placed between the frame of the screen printing plate and the screen printing platform when the screen printing plate is used for screen printing on the screen printing platform.

6. The peelable blue gel screen printing device according to claim 1, wherein the shape of the opening is a rectangle similar to but not identical to that of the screen printing plate, the shape of the bottom surface of the first hollow copper-free substrate is a rectangle similar to but not identical to that of the opening, and the sides of the screen printing plate, the opening and the first hollow copper-free substrate are respectively parallel to each other and the symmetry centers thereof coincide.

7. The peelable blue gel screen printing device according to claim 6, wherein the length of each side of the bottom surface of the first hollow copper-free substrate is less than or equal to 4/5 corresponding to the side length of the screen printing plate.