CN203077815U - Novel printed circuit board (PCB) stencil - Google Patents
Novel printed circuit board (PCB) stencil Download PDFInfo
- Publication number
- CN203077815U CN203077815U CN 201220676875 CN201220676875U CN203077815U CN 203077815 U CN203077815 U CN 203077815U CN 201220676875 CN201220676875 CN 201220676875 CN 201220676875 U CN201220676875 U CN 201220676875U CN 203077815 U CN203077815 U CN 203077815U
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- frame
- silk screen
- screen
- stencil
- pcb
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- Expired - Fee Related
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Abstract
The utility model relates to a printed circuit board (PCB) stencil, and provides a novel PCB stencil. The novel PCB stencil is characterized in that edges are smooth, the structure is simple and manufacturing is convenient. The technical scheme includes that the novel PCB stencil comprises a silk screen woven by warp and weft in a staggering mode and a screen frame for fixing the silk screen, and the silk screen is stretched and then is fixedly arranged on the frame of the stencil through glue. The novel PCB stencil is characterized in that the warp and weft of the silk screen form certain angles with the frame of the silk frame.
Description
Technical field
The utility model relates to a kind of PCB production equipment, specifically is a kind of PCB half tone.
Background technology
PCB(Printed Circuie Board) is the abbreviation of printed circuit board (PCB), typically refers on insulating materials and print conductive pattern according to predetermined design.At first to carry out half tone before the PCB printing and make, need use silk screen and screen frame.Silk screen is a topmost material during half tone is made, and the quality of silk screen quality has determined the thickness and the durability of the flowability of printing ink, printing in the half tone.Screen frame is mainly used to the silk screen after the fixing stretched expansion, and its structure needs certain intensity, otherwise can not guarantee that silk screen surface tension force everywhere is identical, so screen frame generally uses the aluminium matter of high-tension to make.
Existing half tone (as shown in Figure 3), between the graticule of screen frame and silk screen for parallel or be arranged vertically; Cause the flatness and the slickness at printed patterns edge not ideal, influenced the quality of product.
The utility model content
The purpose of this utility model is the deficiency that overcomes in the above-mentioned background technology, and a kind of novel PCB half tone is provided, and this half tone should have edge slickness characteristics better, simple in structure and easy to make.
The technical solution of the utility model is: a kind of novel PCB half tone, comprise silk screen that forms by the graticule weaving and the screen frame that is used for fixing described silk screen, described silk screen is fixed on the frame of described screen frame by glue by the back that stretches, and it is characterized in that: the graticule of described silk screen and the frame of screen frame form certain included angle.
Described angle is 20～30 degree.
Described silk screen is polyester net or nylon mesh.
The beneficial effects of the utility model are: because there are certain angle in the graticule of half tone silk screen and the frame of screen frame, therefore the smooth degree and the slickness of printed graph line Road Edge have obtained remarkable improvement, oil penetration also has raising, can print the live width line-spacing product of whole plate 0.18 * 0.18mm.In addition, the utility model also has characteristics simple in structure, easy to make.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present utility model.
Fig. 2 is the main TV structure schematic diagram of screen frame in the utility model.
Fig. 3 is the main TV structure schematic diagram of existing half tone.
The specific embodiment
Below in conjunction with Figure of description, the utility model is described in further detail, but the utility model is not limited to following examples.
As shown in Figure 3, a kind of novel PCB half tone comprises silk screen 2 and screen frame 1; Silk screen is formed by the graticule weaving, and screen frame is a rectangular configuration; Silk screen is being placed on after the stretching on the screen frame, uses glue that the frame of silk screen and screen frame is fixed together.
Above structure is same as the prior art.The improvement that the utility model is done is:
The frame of screen frame and graticule 3 pendulum of silk screen are had a certain degree, be generally 20～30 degree; The warp and the screen frame horizontal edge frame (or vertical edge frame) that are silk screen constitute 20～30 degree, and the parallel of silk screen and screen frame vertical edge frame (or horizontal edge frame) constitute 20～30 degree), best angle is 22.5 degree; Silk screen is generally polyester net or nylon mesh.
The utility model changes after the angle of screen frame frame and silk screen parallel, makes that the texture of silk screen on the screen frame edge is basic identical, and therefore smooth degree and the slickness at the printed patterns edge is greatly increased, and simultaneously, oil impregnate also increases.
The utility model can be used for printing the live width line-spacing product of whole plate 0.18 * 0.18mm.
Manufacturing process of the present utility model is as follows:
At first check and clear up screen frame, screen frame is placed on the machine of throwing the net 4, adjust screen frame and the angle between the machine frame of throwing the net; On the machine of throwing the net, spread silk screen then, silk screen is carried out tension with the machine of throwing the net; To plurality of positions test tension force on the silk screen, and carry out repeatedly tension adjustment again; After reaching standard, screen frame is risen from the silk screen below, screen frame will withstand silk screen slightly, make between screen frame and the silk screen and combine closely; Glue is spread upon on the contact-making surface of silk screen and screen frame frame, treat its fully in conjunction with after, with blade unnecessary silk screen is cut out down; After at last the screen frame edge being carried out processing such as welt, edge sealing, but static at normal temperatures placement just degreasing use more than 72 hours.
Claims (3)
1. novel PCB half tone, comprise silk screen (2) that forms by the graticule weaving and the shaped as frame screen frame (1) that is used for fixing described silk screen, described silk screen is fixed on the frame of described screen frame by glue by the back that stretches, and it is characterized in that: the graticule of described silk screen (3) forms certain included angle with the frame of screen frame.
2. a kind of novel PCB half tone according to claim 1 is characterized in that: described angle is 20～30 degree.
3. a kind of novel PCB half tone according to claim 2, it is characterized in that: described silk screen is polyester net or nylon mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220676875 CN203077815U (en) | 2012-12-05 | 2012-12-05 | Novel printed circuit board (PCB) stencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220676875 CN203077815U (en) | 2012-12-05 | 2012-12-05 | Novel printed circuit board (PCB) stencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203077815U true CN203077815U (en) | 2013-07-24 |
Family
ID=48823684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220676875 Expired - Fee Related CN203077815U (en) | 2012-12-05 | 2012-12-05 | Novel printed circuit board (PCB) stencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203077815U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582966A (en) * | 2018-05-24 | 2018-09-28 | 杭州临安鹏宇电子有限公司 | A kind of PCB composite halftones |
| CN110757941A (en) * | 2019-10-25 | 2020-02-07 | 杭州友成电子有限公司 | Lean screen printing plate manufacturing process |
| CN112725979A (en) * | 2021-01-19 | 2021-04-30 | 仓和精密制造(苏州)有限公司 | Screen cloth for screen printing plate and weaving method and using method thereof |
-
2012
- 2012-12-05 CN CN 201220676875 patent/CN203077815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582966A (en) * | 2018-05-24 | 2018-09-28 | 杭州临安鹏宇电子有限公司 | A kind of PCB composite halftones |
| CN110757941A (en) * | 2019-10-25 | 2020-02-07 | 杭州友成电子有限公司 | Lean screen printing plate manufacturing process |
| CN112725979A (en) * | 2021-01-19 | 2021-04-30 | 仓和精密制造(苏州)有限公司 | Screen cloth for screen printing plate and weaving method and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20191205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |