CN214821743U - Air guide backing plate - Google Patents
Air guide backing plate Download PDFInfo
- Publication number
- CN214821743U CN214821743U CN202120358362.3U CN202120358362U CN214821743U CN 214821743 U CN214821743 U CN 214821743U CN 202120358362 U CN202120358362 U CN 202120358362U CN 214821743 U CN214821743 U CN 214821743U
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- China
- Prior art keywords
- air guide
- plate body
- plate
- circuit board
- backing plate
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Abstract
The utility model provides an air guide backing plate, including plate body and its peripheral bottom plate, the upper and lower surface of plate body is the plane, the upper surface excavation has the communicating air guide groove in side with the plate body, air guide groove's width is 0.5mm-15mm, and the degree of depth is 0.5mm-15 mm. The air guide backing plate passes through the setting of recess or through-hole, can switch to normal atmospheric environment by the vacuum environment when the circuit board, in the twinkling of an eye that the vacuum environment switches to normal atmospheric environment, the air can be followed the air guide backing plate realizes ventilating to guarantee that circuit board two sides atmospheric pressure equals, the air guide backing plate that this vacuum silk screen printing machine used can improve the printing quality of circuit board.
Description
Technical Field
The utility model relates to a vacuum lithography apparatus's work platen especially relates to an air guide backing plate.
Background
In the existing common vacuum printing equipment, the surface of the traditional printing working table plate is only a plane, so that after a circuit board is printed, the circuit board is switched from a vacuum environment to a normal atmospheric environment instantly, air cannot enter the bottom of the circuit board in time, the pressure below the circuit board is lower than the pressure on the upper surface, and under the difference of the upper pressure and the lower pressure, ink in a through hole of the circuit board is pressed downwards by air pressure, so that the defects of depression and the like are caused, and the quality qualification of products is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air guide backing plate has solved vacuum lithography apparatus and has accomplished the back at circuit board printing, and the air admission vacuum environment is unbalanced, leads to circuit board printing ink to influence the problem of product quality, and its technical scheme is as follows:
the air guide base plate comprises a plate body and a bottom plate provided with the plate body, wherein the upper surface and the lower surface of the plate body are both planes, and an air guide groove or a through hole communicated with the side surface of the plate body is dug in the upper surface.
The air guide groove enables the upper surface of the plate body to form a pattern, and any point of the pattern can be communicated to the side surface of the plate body.
The air guide grooves are straight lines which are vertically crossed, so that the shapes among the air guide grooves are rhombic or rectangular.
The plate body and the bottom plate are integrally formed, or the plate body and the bottom plate are of separable structures.
The board body is provided with air guide holes corresponding to holes formed in the circuit board.
The width of the air guide groove is 0.5mm-15mm, and the depth is 0.5mm-15 mm.
The plate body is divided into an upper plate body and a lower plate body, the upper plate body and the lower plate body are fixedly connected through a support column, and the upper plate body is provided with a plurality of through holes.
The through holes form a pattern on the upper surface of the board body, and any one through hole of the pattern can be communicated with the side surface of the board body.
The air guide backing plate passes through the setting of recess or through-hole, can switch to normal atmospheric environment by the vacuum environment when the circuit board, in the twinkling of an eye that the vacuum environment switches to normal atmospheric environment, the air can be followed the air guide backing plate realizes ventilating to guarantee that circuit board two sides atmospheric pressure equals, the air guide backing plate that this vacuum silk screen printing machine used can improve the printing quality of circuit board.
Drawings
FIG. 1 is a schematic structural view of a first embodiment of the air guide shim plate;
FIG. 2 is a side schematic view of a first embodiment of the airway plate;
FIG. 3 is an enlarged schematic view of a first embodiment of the airway plate;
FIG. 4 is a schematic structural view of a second embodiment of the airway plate;
FIG. 5 is a schematic perspective view of a second embodiment of the airway plate;
FIG. 6 is an enlarged schematic view of a second embodiment of the airway plate;
FIG. 7 is a schematic structural view of a third embodiment of the airway plate;
FIG. 8 is a side view of a portion of the structure of the third embodiment of the airway plate.
Detailed Description
As shown in fig. 1 to 3, the air guide backing plate is a cuboid, and comprises a bottom plate 1 and a plate body, the plate body is fixedly installed on the bottom plate 1, the bottom plate and the plate body are integrally formed, the upper surface 3 and the lower surface 2 of the plate body are planes, an air guide groove 4 is dug in the upper surface, the two ends of the air guide groove 4 are communicated with the side surface of the plate body, and air can pass through the air guide groove 4.
The width of the air guide grooves 4 is 0.5mm-15mm, the depth is 0.5mm-15mm, the air guide grooves are in straight lines, curves and broken lines on the upper surface 2, the upper surface 3 is communicated with the side surface of the plate body in air, and furthermore, the shapes among the air guide grooves are also in various patterns, and the shapes can be spiral, rectangular, circular and the like. In fig. 1, the air guide grooves of the upper surface 3 are oblique lines that intersect perpendicularly, so that the shape between the air guide grooves is a rhombus. The air guide groove 4 has the function that when the circuit board is in a vacuum state broken from the vacuum chamber, air can pass through the air guide groove, so that the air pressure on the two sides of the circuit board is equal, ink cannot be pressed down by the air pressure difference, and the defects of depression and the like are avoided.
On the basis of the first embodiment, as shown in the second embodiment shown in fig. 4 to 6, the air guide cushion plate is a rectangular parallelepiped, and includes a bottom plate 1 below and a plate body 6 above, the two are separable structures, and the plate body 6 is provided with a bolt hole 5 and is fixedly installed in the middle of the bottom plate 1 through a bolt. When printing, air will pass through the air guide groove and then be connected with the bottom of the circuit board.
The plate body 6 can be provided with air guide holes (not shown in the figure), the air guide holes correspond to holes in the circuit board, the air guide base plate is used for supporting the circuit board, the air guide holes are much larger than the holes in the circuit board, and air is directly communicated with the bottom of the holes in the circuit board under the air guide base plate, so that air pressure on two sides of the circuit board is guaranteed. The extruded ink can also pass through the air guide holes, and the contact area of the circuit board and the air guide base plate is ensured by the form of the air guide holes. The air guide hole is communicated with the air guide groove and further communicated with the side surface of the plate body.
As shown in fig. 7 and 8, the air guide pad includes a bottom plate 1 and a plate body, and unlike the above-described embodiments, the plate body is divided into an upper plate body 7 and a lower plate body 8, an upper surface of the plate body corresponds to an upper surface of the upper plate body 7, and a lower surface of the plate body corresponds to a lower surface of the lower plate body 8.
The upper plate body 7 and the lower plate body 8 are fixedly connected through a plurality of support pillars 9, so that a gap 10 is formed between the upper plate body 7 and the lower plate body 8, namely, only the support pillars 9 are visible on the side surface of the plate body. The upper plate body 7 is provided with a plurality of through holes 11, the diameter of each through hole 11 is 0.5-15 mm, the height of each supporting column 9 is 0.5-15 mm, air enters the lower surface of the upper plate body 7 from the side surface of the plate body, and then the air can circulate through the through holes 11.
The air guide backing plate is as being applied to the air guide workstation of vacuum silk screen printing machine, the air guide workstation is used for placing the circuit board, and in vacuum silk screen printing machine production process, the circuit board accomplishes the print jobs under vacuum environment, and when the print jobs of circuit board ended, the circuit board can be switched to normal atmospheric environment by vacuum environment, in the twinkling of an eye that vacuum environment switches to normal atmospheric environment, the air can be followed the air guide backing plate is realized ventilating to guarantee that circuit board two sides atmospheric pressure equals, the air guide backing plate that this vacuum silk screen printing machine used can improve the printing quality of circuit board.
Claims (8)
1. An air guide backing plate is characterized in that: the plate comprises a plate body and a bottom plate for installing the plate body, wherein the upper surface and the lower surface of the plate body are both planes, and an air guide groove or a through hole communicated with the side surface of the plate body is dug in the upper surface.
2. An air guide shim plate according to claim 1 wherein: the air guide groove enables the upper surface of the plate body to form a pattern, and any point of the pattern can be communicated to the side surface of the plate body.
3. An air guide shim plate according to claim 2 wherein: the air guide grooves are straight lines which are vertically crossed, so that the shapes among the air guide grooves are rhombic or rectangular.
4. An air guide shim plate according to claim 1 wherein: the plate body and the bottom plate are integrally formed, or the plate body and the bottom plate are of separable structures.
5. An air guide shim plate according to claim 1 wherein: the board body is provided with air guide holes corresponding to holes formed in the circuit board.
6. An air guide shim plate according to claim 1 wherein: the width of the air guide groove is 0.5mm-15mm, and the depth is 0.5mm-15 mm.
7. An air guide shim plate according to claim 1 wherein: the plate body is divided into an upper plate body and a lower plate body, the upper plate body and the lower plate body are fixedly connected through a support column, and the upper plate body is provided with a plurality of through holes.
8. An air guide shim plate according to any one of claims 1 or 7 wherein: the through holes form a pattern on the upper surface of the board body, and any one through hole of the pattern can be communicated with the side surface of the board body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358362.3U CN214821743U (en) | 2021-02-07 | 2021-02-07 | Air guide backing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120358362.3U CN214821743U (en) | 2021-02-07 | 2021-02-07 | Air guide backing plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214821743U true CN214821743U (en) | 2021-11-23 |
Family
ID=78952344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120358362.3U Active CN214821743U (en) | 2021-02-07 | 2021-02-07 | Air guide backing plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214821743U (en) |
-
2021
- 2021-02-07 CN CN202120358362.3U patent/CN214821743U/en active Active
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |