Full-opening steel plate capable of reducing slurry flow and printing equipment

Abstract

The utility model provides a full-opening steel plate capable of reducing slurry flow, which comprises a first metal layer and a second metal layer which are mutually stacked, a plurality of printing notches used for printing a whole fine grid are arranged on the first metal layer in parallel, and the printing notches extend along the printing direction. A plurality of printing channels and a plurality of speed limiting strips located on the two sides of the extending direction of the printing channels are arranged on the second metal layer side by side, and each printing channel corresponds to one printing notch. The printing channel comprises a plurality of slurry penetrating channels arranged at intervals in the extending direction, a reinforcing area located away from the printing notch in the thickness direction and a slurry storage area close to the printing notch in the thickness direction, the speed limiting strip protrudes from the surface of the second metal layer to the direction away from the first metal layer, and the speed limiting strip and any position of the printing channel are arranged at intervals. The full-opening steel plate capable of reducing slurry flowing and the printing equipment can limit the flowing speed of the slurry, so that the thickness of a printing grid line is improved.

Description

Technical Field

[0001] This utility model relates to the field of solar cell printing technology, and in particular to a fully open steel plate and printing equipment that can reduce the flow of paste. Background Technology

[0002] Fully open steel plates are a new type of metal plate used in solar cell printing technology. The open area directly penetrates the material, forming a completely open channel for printing conductive paste, allowing a long grid to be formed on the surface of the cell in one go.

[0003] To ensure the integrity of the printing plate, a fully open steel plate has notches at certain locations corresponding to the fine grid lines. Therefore, each printed grid line has gaps, requiring a second printing with another steel plate to fill these gaps and complete the printing of the final image. To ensure strength, existing technologies such as CN120096225A use two metal layers and connecting bridges on the upper metal layer to improve structural strength.

[0004] However, when users use the equipment, factories often increase the squeegee speed to the maximum to improve efficiency. This results in an excessively fast ink flow rate, which leads to less ink entering the channel and ultimately insufficient thickness of the printed grid.

[0005] In view of this, it is necessary to improve the existing fully open steel plates to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a fully open steel plate that can reduce the flow of ink, so as to solve the problem of insufficient grid line thickness caused by the high printing speed of existing fully open steel plates.

[0007] To achieve the above objectives, this utility model provides a fully open steel plate that can reduce slurry flow. The fully open steel plate includes a first metal layer and a second metal layer stacked on top of each other. The first metal layer has a plurality of printing slots arranged side by side for printing a fine grid. The printing slots extend along the printing direction. The second metal layer has a plurality of printing channels and a plurality of speed limiting strips located on both sides of the extending direction of the printing channels. Each printing channel corresponds to one of the printing slots. The printing channel includes a plurality of slurry-permeable channels spaced apart along the extending direction, a reinforcing area located away from the printing slots along the thickness direction, and a slurry storage area close to the printing slots along the thickness direction. The speed limiting strips protrude from the surface of the second metal layer in a direction away from the first metal layer. The speed limiting strips are spaced apart from any position of the printing channels.

[0008] As a further improvement of this utility model, the speed limiting strip is perpendicular to the extension direction of the printing channel.

[0009] As a further improvement of this utility model, the end of the speed limiting bar near the printing channel is inclined toward the printing direction.

[0010] As a further improvement of this utility model, the tilt angle of the speed limiter strip along the printing direction is between 30 and 60 degrees.

[0011] As a further improvement of this utility model, the speed limiter strip is tilted at an angle of 45 degrees along the printing direction.

[0012] As a further improvement of this utility model, the distance between the speed limiter strip and the printing channel is 10-30 micrometers.

[0013] As a further improvement of this utility model, the distance between two adjacent speed limiting strips is 15-35 micrometers.

[0014] As a further improvement of this utility model, the width of the speed limiting strip is 6-15 micrometers.

[0015] As a further improvement of this utility model, the height of the speed limiting strip perpendicular to the second metal layer is between 8 and 10 micrometers.

[0016] This utility model also provides a printing device, which includes a frame, an ink supply mechanism, a pad printing mechanism, and a fully open steel plate as described above that can reduce ink flow.

[0017] The beneficial effects of this utility model are: the fully open steel plate and printing equipment of this utility model, which can reduce the flow of ink, can limit the flow rate of ink by setting speed limiting strips on both sides of the printing channel on the second metal layer, thereby increasing the thickness of the printing grid lines. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the fully open steel plate of this utility model, which can reduce slurry flow;

[0020] Figure 2 This is a partial structural schematic diagram of the fully open steel plate of this utility model that can reduce slurry flow.

[0021] Figure 3 yes Figure 2 A magnified structural diagram of region A in the middle;

[0022] Figure 4 This is a partial structural schematic diagram of a fully open steel plate that can reduce slurry flow according to an embodiment of the present invention;

[0023] Figure 5 This is a partial structural schematic diagram of a fully open steel plate that can reduce slurry flow according to another embodiment of the present invention;

[0024] Figure 6 This is a partial structural schematic diagram of a fully open steel plate that can reduce slurry flow according to another embodiment of the present invention;

[0025] Figure 7 This is a partial structural schematic diagram of a fully open steel plate that can reduce slurry flow according to the last embodiment of this utility model. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figures 1 to 7As shown, the printing equipment of this utility model includes a frame, an ink supply mechanism, a pad printing mechanism, and a fully open steel plate 100 that can reduce ink flow.

[0030] The fully open steel plate 100, which reduces slurry flow, includes a first metal layer and a second metal layer 1 stacked on top of each other.

[0031] Multiple printing slots for printing entire fine grids are arranged side-by-side on the first metal layer. The printing slots extend along the printing direction, thus allowing multiple parallel fine grids to be printed in one go. The printing slots are continuously arranged without any breaks in the middle.

[0032] The second metal layer 1 has multiple printing channels 11 arranged in parallel and multiple speed limiting strips 12 located on both sides of the extending direction of the printing channels 11.

[0033] Each of the printing channels 11 is provided corresponding to one of the printing slots, that is, along the height direction, the printing channel 11 is located above the printing slot, and the paste passes through the printing channel 11 and enters the printing slot.

[0034] The printing channel 11 includes a plurality of pulp passage channels 111 spaced apart along the extension direction, a reinforcing zone 112 located away from the printing slot along the thickness direction, and a pulp storage zone close to the printing slot along the thickness direction.

[0035] A reinforcing zone 112 and a slurry storage zone located below the reinforcing zone 112 are provided between two adjacent slurry passages 111.

[0036] In this embodiment, the thickness direction refers to the thickness of the first metal layer and the second metal layer 1, and also the vertical direction during printing.

[0037] Furthermore, along the height direction, the reinforcing zone 112 is located above the slurry storage zone, which is used to store sufficient slurry. The slurry passing through the reinforcing zone 112 falls into the slurry storage zone under the action of gravity and further falls into the printing slot.

[0038] The reinforcing zone 112 includes a plurality of ink penetration holes 1121 and a connecting bridge 1122 disposed between two adjacent ink penetration holes 1121. The width of the ink penetration holes 1121 perpendicular to the printing direction is greater than the width of the printing groove, so that more ink can pass through the ink penetration holes 1121.

[0039] Along the printing direction, the width of the pulp passage hole 1121 in the middle of the reinforcing area 112 is greater than the width of the pulp passage holes 1121 at both ends, so that the reinforcing area 112 is spindle-shaped as a whole.

[0040] The speed limiting strip 12 is spaced apart from any position on the printing channel 11, and the speed limiting strip 12 protrudes from the surface of the second metal layer 1 in a direction away from the first metal layer. The speed limiting strip 12 is perpendicular to the second metal layer 1 at a height of 8-10 micrometers. At this height, the speed limiting strip 12 can achieve a good speed limiting effect.

[0041] In this embodiment, by setting speed limiting strips 12 on both sides of the printing channel 11, the flow of the ink can be limited, thus avoiding the problem of the printed grid lines being too thin due to the excessive flow of ink.

[0042] The speed limiting strip 12 is set at an interval from the printing channel 11. The gap between the speed limiting strip 12 and the printing channel 11 allows more paste to pass through. The speed limiting strip 12 can guide the paste to the printing channel 11.

[0043] In a preferred embodiment, the speed limiting strip 12 is located close to the printing channel 11, and the distance between the speed limiting strip 12 and the printing channel 11 is 10-30 micrometers. If the distance is too short, the paste will not easily enter the printing channel 11, while if the distance is too long, the speed limiting effect will be reduced.

[0044] like Figures 2 to 3 As shown in this embodiment, each of the printing channels 11 has multiple speed limiting strips 12 on both sides. The speed limiting strips 12 can be completely arranged on both sides of the printing channel 11 along the printing direction, or they can be arranged at different positions in the printing channel 11 according to the specific product.

[0045] In this embodiment, the speed limiting bar 12 is perpendicular to the extending direction of the printing channel 11. The speed limiting bar 12, which is perpendicular to the printing channel 11, can minimize the speed of the paste.

[0046] like Figure 4 As shown, in one embodiment, the speed limiting bar 12 is inclined towards the printing direction at one end near the printing channel 11. The speed limiting bar 12 inclined towards the printing direction can provide a better guiding effect for the ink, guiding more ink to the ink passage channel 111, thereby increasing the amount of ink entering the ink passage channel 111 and increasing the thickness of the printed grid lines.

[0047] The tilt angle of the speed limiting strip 12 along the printing direction is between 30 and 60 degrees. Preferably, the tilt angle of the speed limiting strip 12 along the printing direction is 45 degrees. Through experimental verification, when the speed limiting strip 12 is tilted, especially when the tilt angle is 45 degrees, the guiding and speed limiting effects are the best, and the thickness of the printed grid lines is the highest.

[0048] like Figure 5As shown, in another embodiment, the speed limiter 12 may also be tilted in the opposite direction to the printing, and the tilt angle may be between 30 and 60 degrees.

[0049] like Figure 6 As shown, in another embodiment, the speed limiting strip 12 is disposed on both sides of the reinforcing zone 112 and extends to the printing outlet of the ink penetration channel 111 near the printing outlet of the reinforcing zone 112.

[0050] like Figure 7 As shown, in the last embodiment, the speed limiting strip 12 is only set at the printing exit of the reinforcing zone 112 near the pulp channel 111. This position is prone to thinning of the printed grid lines or even breakage due to lateral shear force.

[0051] The distance between two adjacent speed limiter strips 12 is 15-35 micrometers, and the speed limiter strips 12 in the same row are arranged in parallel. Here, the distance between two adjacent speed limiter strips 12 refers to the distance along the direction perpendicular to the extension of the speed limiter strip 12. Preferably, the width of the speed limiter strip 12 is 6-15 micrometers.

[0052] The fully open steel plate 100 and printing equipment of this invention can reduce the flow rate of the printing paste by setting speed limiting strips 12 on both sides of the printing channel 11 on the second metal layer 1, thereby limiting the flow rate of the printing paste and increasing the thickness of the printing grid lines.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fully open steel plate that reduces slurry flow, characterized in that: The fully open steel plate that reduces slurry flow includes a first metal layer and a second metal layer stacked on top of each other. The first metal layer has a plurality of printing slots arranged side by side for printing a fine grid. The printing slots extend along the printing direction. The second metal layer has a plurality of printing channels and a plurality of speed limiting strips located on both sides of the extending direction of the printing channels. Each printing channel corresponds to one of the printing slots. The printing channel includes a plurality of slurry-permeable channels spaced apart along the extending direction, a reinforcing area located away from the printing slot along the thickness direction, and a slurry-storage area close to the printing slot along the thickness direction. The speed limiting strips protrude from the surface of the second metal layer toward a direction away from the first metal layer. The speed limiting strips are spaced apart from any position of the printing channel.

2. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The speed limit bar is perpendicular to the extension direction of the printing channel.

3. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The speed limit bar is inclined toward the printing direction at the end closest to the printing channel.

4. The fully open steel plate with reduced slurry flow according to claim 3, characterized in that: The speed limit strip is tilted at an angle between 30 and 60 degrees along the printing direction.

5. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The speed limit strip is tilted at an angle of 45 degrees along the printing direction.

6. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The distance between the speed limiter strip and the printing channel is 10-30 micrometers.

7. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The distance between two adjacent speed limit bars is 15-35 micrometers.

8. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The width of the speed limit bar is 6-15 micrometers.

9. The fully open steel plate with reduced slurry flow according to claim 1, characterized in that: The speed limiter strip is perpendicular to the second metal layer at a height of 8-10 micrometers.

10. A printing apparatus, characterized in that: The printing equipment includes a frame, an ink supply mechanism, a pad printing mechanism, and a fully open steel plate as described in any one of claims 1-9 that can reduce ink flow.

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