Screen calibration device for photovoltaic backboard glass screen printing
By designing a screen calibration device to correct the screen frame, the printing quality problems caused by the deformation of the screen frame are solved, and efficient graphics and text calibration and cost control are achieved.
Patent Information
- Application Number
- CN202422541511.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-10-21
AI Technical Summary
In the production of photovoltaic backplane glass, deformation of the screen frame leads to a decrease in the quality of screen printing, affecting the deviation of graphics and text, and the existing technology is costly and difficult to effectively calibrate.
A screen calibration device is designed to fix the wire mesh frame through the first groove and the second groove, and to threadedly connect with the correction connecting frame by using the first screw and the second screw, and rotate the correction connecting frame to produce an inward tension force to correct the deformation of the mesh frame.
It improves the clarity of the graphics and text of the printed materials, extends the service life of the wire mesh, reduces production costs, and is easy to operate.
Smart Images
Figure CN223147963U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of screen printing, and particularly relates to a screen calibration device for screen printing of photovoltaic backplane glass. Background Art
[0002] In the production of the backplane of photovoltaic glass, the screen is a consumable necessary for the screen printing process. During normal production, after the screen prints 15,000 pieces of photovoltaic backplane glass on the screen printing machine, it is scraped and pressed by the squeegee a considerable number of times. The printing quality of the screen deteriorates or the entire synthetic fiber screen cloth cracks, and the screen cloth is thus scrapped. At this time, a new screen needs to be replaced. In most cases, the screen printing screen needs to be purchased externally, resulting in a high production cost. To reduce the production cost, generally, the screen frame (made of aluminum alloy) used for stretching the screen can be recycled, that is, the screen frame is returned to the plate-making factory of the screen printing screen again and processed into a screen again. However, due to uneven stress during screen stretching, or the screen being stretched and worn during the printing process, or the screen frame being deformed due to the bumps during loading, transportation, and unloading, the screen frame will be deformed, affecting the deformation of the screen cloth. Furthermore, during the screen printing process, there will be a deviation between the graphics on the screen and the original graphics, and the printed graphics on the screen will be deformed accordingly. The graphics of the photovoltaic backplane glass printed using the deformed screen have a large deviation from the standard graphics, resulting in unqualified screen printing. Summary of the Invention
[0003] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a screen calibration device for screen printing of photovoltaic backplane glass. By applying an inward pulling force to the screen frame through this device to calibrate the outward deformation of the screen frame, the technical problem that the screen frame is deformed in the existing production and thus affects the screen printing effect is solved. The utility model has the characteristics of simple structure, convenient operation, and low cost.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A screen calibration device for screen printing of photovoltaic backplane glass includes a first groove 1 and a second groove 2 clamped on a set of opposite side frames of the screen frame 8. The first groove 1 and the second groove 2 are respectively detachably and fixedly connected to a first screw 3 and a second screw 4. A calibration connection frame 5 is arranged between the first screw 3 and the second screw 4, and both are threadedly connected to the calibration connection frame 5.
[0006] A pair of symmetrically arranged large nuts 6 are arranged at the tops of the first groove 1 and the second groove 2. The first screw 3 and the second screw 4 pass through the large nuts 6, and the first screw 3 and the second screw 4 are locked to the large nuts 6 through small nuts 7.
[0007] The calibration connection frame 5 is a hollow rectangular structure, and internal threaded through holes are processed on the short sides of the rectangular structure, which are matched with the external threads of the first screw 3 and the second screw 4.
[0008] The long sides of the calibration connection frame 5 are all rounded.
[0009] The first groove 1 and the second groove 2 are both U-shaped channel steels.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] The present utility model clamps a set of opposite sides of the wire mesh frame through the first groove and the second groove, and the first screw and the second screw are respectively detachably and fixedly connected to the first groove and the second groove, which is convenient for correcting wire mesh frames of different sizes. By rotating the calibration connection frame, the first screw and the second screw threadedly connected thereto receive an inward pulling force, thereby calibrating the deformed wire mesh frame, ensuring the stability of the frame, and improving the graphic clarity of the printed matter. The present utility model can timely repair the technical problems of frame deformation and looseness during the printing process, reduce the additional stress on the wire mesh, thereby prolong the service life of the wire mesh and reduce the production cost. The present utility model rounds the long sides of the calibration connection frame, which is convenient for workers to perform calibration operations. Description of the Drawings
[0012] Figure 1 It is a schematic structural diagram of a screen calibration device for photovoltaic backplane glass screen printing provided by the present utility model.
[0013] Figure 2 It is a top view of the screen calibration device for photovoltaic backplane glass screen printing provided by the present utility model acting on a wire mesh frame.
[0014] Figure 3 is Figure 1 an enlarged structural diagram of part A in
[0015] In the figure: first groove 1, second groove 2, first screw 3, second screw 4, calibration connection frame 5, large nut 6, small nut 7, wire mesh frame 8. Detailed Embodiments
[0016] Next, the technical solutions of the present utility model will be further described in conjunction with the drawings.
[0017] Such as Figure 1 and Figure 2As shown in the figure, a screen calibration device for photovoltaic backplane screen printing includes a first groove 1 and a second groove 2 clamped on a set of opposite side frames of a screen frame 8. The first groove 1 and the second groove 2 are respectively detachably and fixedly connected to a first screw 3 and a second screw 4. A calibration connection frame 5 is arranged between the first screw 3 and the second screw 4 and is threadedly connected to both of them.
[0018] As Figure 3 shown, a pair of symmetrically arranged large nuts 6 are configured at the tops of the first groove 1 and the second groove 2. The first screw 3 and the second screw 4 pass through the large nuts 6, and the first screw 3 and the second screw 4 are locked to the large nuts 6 by small nuts 7.
[0019] The calibration connection frame 5 is a hollow rectangular structure. Internal threaded through holes are processed on the short sides of the rectangular structure and are matched with the external threads of the first screw 3 and the second screw 4; the long sides of the calibration connection frame 5 are all rounded for easy use.
[0020] The sizes of the first groove 1 and the second groove 2 match that of the screen frame 8 and are both U-shaped steel grooves with a width of 120 mm × a height of 47.5 mm × a length of 105 mm. The surfaces are smooth and the edges are chamfered without burrs. When clamping the screen frame, the U-shaped structure increases the contact area with the screen frame, slows down the extrusion force, and prevents the screen frame from being damaged by extrusion; the lengths of the first screw 3 and the second screw 4 are at least 920 mm, the length of the calibration connection frame 5 is 243 mm, one side screw hole is a left-handed screw hole of M16, and the other side screw hole is a right-handed screw hole of M16; the large nut 6 is a machined part with an outer diameter of 45 mm and an inner diameter of 16.5 mm; the small nut 7 is an M16 nut.
[0021] The working principle of the present utility model is as follows:
[0022] When it is necessary to correct the deformed screen frame 8, first use a tape measure and a vernier caliper to measure the deformation amount of the screen frame, record the measured data, and compare this data with the standard screen plate drawing to calculate the value that needs to be calibrated; then clamp the first groove 1 and the second groove 2 on the frame of a pair of opposite sides of the deformed screen frame 8, and respectively pass the first screw 3 and the second screw 4 through the large nuts 6 welded to the tops of the first groove 1 and the second groove 2. At this time, adjust the first screw 3 and the second screw 4 to appropriate positions so that the correction connection frame 5 can be threadedly connected to the first screw 3 and the second screw 4 on its two sides, and then use small nuts 7 to lock the first screw 3 and the second screw 4 with the large nuts 6; then rotate the correction connection frame 5. Under the action of the thread tension, the first screw 3 and the second screw 4 evenly correct the deformed screen frame 8. If the deformation amount between a pair of opposite sides of the screen frame 8 is less than 1 mm, it can be corrected to the required value at one time; if it is greater than 1 mm, adjust 1 mm each time, then let it stand for a period of time, and adjust again until it is corrected in place; when a pair of opposite side frames of the deformed screen frame 8 are corrected, remove the device and continue to correct the other pair of opposite side frames of the deformed screen frame 8.
Claims
1. A screen calibration device for screen printing of photovoltaic backplane glass, characterized in that: It includes a first groove (1) and a second groove (2) clamped on a set of opposite side frames of a wire mesh frame (8). The first groove (1) and the second groove (2) are respectively detachably and fixedly connected to a first screw rod (3) and a second screw rod (4). A calibration connection frame (5) is arranged between the first screw rod (3) and the second screw rod (4), and both are threadedly connected to the calibration connection frame (5).
2. The screen calibration device for the screen printing of photovoltaic backplane glass according to claim 1, wherein: A pair of symmetrically arranged large nuts (6) are configured at the tops of the first groove (1) and the second groove (2). The first screw rod (3) and the second screw rod (4) pass through the large nuts (6), and the first screw rod (3) and the second screw rod (4) are locked with the large nuts (6) through small nuts (7).
3. The screen calibration device for screen printing of photovoltaic backplane glass according to claim 1 or 2, characterized in that: The calibration connection frame (5) is a hollow rectangular structure. Internal threaded through holes are processed on the short sides of the rectangular structure, and are matched with the external threads of the first screw rod (3) and the second screw rod (4).
4. A screen calibration device for photovoltaic backplane screen printing according to claim 3, characterized in that: The long sides of the calibration connection frame (5) are all rounded off.
5. A screen calibration device for photovoltaic backplane screen printing according to claim 1, characterized in that: The first groove (1) and the second groove (2) are both U-shaped steel channels.