Adjustable silk-screen printing mold frame
By adding horizontal and vertical adjustment devices to the large-form screen printing mold, the adjustment of the screen size is solved, and the problem of center dislocation of the electrode pattern due to changes in the screen size is solved, which improves printing quality and reduces production costs.
Patent Information
- Application Number
- CN202421032991.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-05-13
AI Technical Summary
The large-format screen printing die has a large size and is easily affected by temperature and humidity to cause changes in the screen size, resulting in overall dislocation between the center of the electrode pattern and the center of the piezoelectric ceramic sheet, affecting the printing quality, and the existing technology lacks effective solutions.
An adjustable large-version screen printing mold is designed. By adding transverse and longitudinal adjustment devices to the left and bottom of the fixed mold frame, the transverse and longitudinal adjustment screws and lock bolts are used to adjust the longitudinal and transverse direction of the screen size and correct the central position of the electrode pattern.
By adjusting the screen size, the position of the center of the electrode pattern can be effectively corrected, printing quality can be ensured, and misaligned deviations caused by changes in the screen size can be avoided, thereby reducing production costs.
Smart Images
Figure CN222756257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a screen printing mold frame, in particular to an adjustable screen printing mold frame, belonging to a screen printing device. Background Art
[0002] Printing electrode slurry on the surface of piezoelectric ceramic sheets is an important process for manufacturing piezoelectric ceramic elements. Currently, a large-scale screen printing mold is usually used to complete the above work. The large-scale screen printing mold is usually composed of a rectangular mold frame, a screen with four sides attached to the bottom of the mold frame, and a number of electrode patterns evenly distributed on the screen. When printing, it is only necessary to evenly position a number of piezoelectric ceramic sheets on the printing table, place the large-scale screen printing mold above the piezoelectric ceramic sheets, use the two adjacent sides of the large-scale screen printing mold to position it, and then use a clamping device to clamp the large-scale screen printing mold to ensure that the center of each electrode pattern on the screen coincides with the center of each piezoelectric ceramic sheet.
[0003] However, due to the large size of the large-scale screen printing mold, the screen size is easily affected by temperature and humidity and deformed (usually the size change is usually within 0.5mm), which causes the center of each electrode pattern and the center of each piezoelectric ceramic sheet to be misaligned as a whole, affecting the printing quality of the electrode slurry. At present, there is no effective way to solve the problem of overall offset of the center of each electrode pattern caused by the change of screen size, and the large-scale screen printing mold can only be remade. It is not only labor-intensive and time-consuming, but also wastes materials and has high production costs. Summary of the invention
[0004] In view of the above-mentioned defects existing in the prior art, the utility model aims to provide an adjustable large-size screen printing mold which can correct the overall deviation of the center of the electrode pattern.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a rectangular fixed mold frame fixedly surrounded by an upper frame edge, a lower frame edge, a left frame edge, and a right frame edge; a lateral adjustment device is connected to the left side of the fixed mold frame, and a longitudinal adjustment device is connected to the lower side of the fixed mold frame; the lateral adjustment device is composed of two lateral guide posts fixed on the left frame edge, a lateral movable edge slidably matched with the two lateral guide posts, and two lateral adjustment screws that are matched with the lateral movable edges through threads and are rotatably connected to the fixed mold frame; the longitudinal adjustment device is composed of two longitudinal guide posts fixed on the lower frame edge, a longitudinal movable edge slidably matched with the two longitudinal guide posts, and two longitudinal adjustment screws that are matched with the longitudinal movable edges through threads and are rotatably connected to the fixed mold frame.
[0006] Two transverse locking bolts are installed on the transverse movable edge, and two longitudinal locking bolts are installed on the longitudinal movable edge.
[0007] The thickness of the upper frame side is the same as the thickness of the right frame side, the thickness of the left frame side is the same as the thickness of the lower frame side, and the thickness of the left frame side and the thickness of the lower frame side are both smaller than the thickness of the upper frame side.
[0008] Compared with the prior art, the utility model has the following advantages due to the adoption of the above technical solution:
[0009] 1) A lateral adjustment device is added to the left side of the fixed mold frame, and a longitudinal adjustment device is added to the bottom of the fixed mold frame. Therefore, the screen size can be tightened or shrunk by the lateral adjustment bolts and the longitudinal adjustment bolts respectively, so as to correct the center position of each electrode pattern on the screen and ensure the printing quality.
[0010] 2) Since the transverse locking bolt and the longitudinal locking bolt are respectively added to the transverse adjustment device and the longitudinal adjustment device, the dimensional stability of the screen in both the longitudinal and transverse directions can be ensured, thereby avoiding the misalignment of the center of the electrode pattern during the printing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the utility model;
[0012] Figure 2 yes Figure 1 A-A sectional view;
[0013] Figure 3 yes Figure 1 B-B sectional view;
[0014] Figure 4 yes Figure 1 Rear view of the .
[0015] In the figure: fixed mold frame 1, upper frame edge 1-1, right frame edge 1-2, lower frame edge 1-3, left frame edge 1-4, longitudinal adjustment device 2, longitudinal movable edge 2-1, longitudinal guide column 2-2, longitudinal locking bolt 2-3, longitudinal adjustment screw 2-4, longitudinal limit block 2-5, transverse adjustment device 3, transverse movable edge 3-1, transverse locking bolt 3-2, transverse adjustment screw 3-3, transverse guide column 3-4, transverse limit block 3-5. DETAILED DESCRIPTION
[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0017] like Figures 1 to 4As shown: the rectangular fixed mold frame 1 is formed by the upper frame edge 1-1, the lower frame edge 1-3, the left frame edge 1-4, and the right frame edge 1-2. A lateral adjustment device 3 connected to the left frame edge 1-4 is provided on the left side of the fixed mold frame 1, and the lateral adjustment device is composed of two lateral guide pillars 3-4 fixed on the left frame edge 1-4, a lateral movable edge 3-1 slidably matched with the two lateral guide pillars, two lateral adjustment screws 3-3 respectively matched with the lateral movable edges through threads, and two lateral limit blocks 3-5 respectively fixed at the ends of each lateral adjustment screw 3-3 and respectively rotatably connected to the left frame edge 1-4; a longitudinal adjustment device 2 connected to the lower frame edge 1-3 is provided below the fixed mold frame 1, and the longitudinal adjustment device is composed of two longitudinal guide pillars 2-2 fixed on the lower frame edge 1-3, a longitudinal movable edge 2-1 slidably matched with the two longitudinal guide pillars, two longitudinal adjustment screws 2-4 respectively matched with the longitudinal movable edges through threads, and two longitudinal limit blocks 2-5 respectively fixed at the ends of each longitudinal adjustment screw 2-4 and respectively rotatably connected to the lower frame edge 1-3.
[0018] When in use, the upper edge and right edge of the screen 4 are respectively pasted and fixed to the bottom surface of the upper frame edge 1-1 and the bottom surface of the right frame edge 1-2, and the lower edge and left edge of the screen 4 are respectively pasted and fixed to the bottom surface of the horizontal movable edge 3-1 and the bottom surface of the longitudinal movable edge 2-1.
[0019] During calibration, loosen the two transverse locking bolts 3-2 and the two longitudinal locking bolts 2-3 to make them disengage from the left frame edge 1-4 and the lower frame edge 1-3 respectively, and rotate the two transverse adjustment bolts 3-3 and the two longitudinal adjustment bolts 2-4 respectively to increase or decrease the size of the screen 4 in the transverse and longitudinal directions respectively, so that the position of the center of the electrode pattern can be moved up and down and left and right within a certain range. After the adjustment is completed, tighten the two transverse locking bolts 3-2 and the two longitudinal locking bolts 2-3 to keep them in contact with the left frame edge 1-4 and the lower frame edge 1-3 respectively, and the size of the screen 4 can be fixed.
Claims
1. An adjustable screen printing mold frame, comprising a rectangular fixed mold frame (1) fixedly surrounded by an upper frame edge (1-1), a lower frame edge (1-3), a left frame edge (1-4), and a right frame edge (1-2); characterized in that: The fixed mold frame has a lateral adjustment device (3) connected to the left side thereof, and the fixed mold frame (1) has a longitudinal adjustment device (2) connected to the lower side thereof; the lateral adjustment device (3) is composed of two lateral guide posts (3-4) fixed to the left frame side (1-4), a lateral movable side (3-1) slidably matched with the two lateral guide posts, and two lateral adjustment screws (3-3) matched with the lateral movable side through threads and rotatably connected to the fixed mold frame (1); the longitudinal adjustment device (2) is composed of two longitudinal guide posts (2-2) fixed to the lower frame side (1-3), a longitudinal movable side (2-1) slidably matched with the two longitudinal guide posts, and two longitudinal adjustment screws (2-4) matched with the longitudinal movable side through threads and rotatably connected to the fixed mold frame (1).
2. The adjustable screen printing mold frame according to claim 1, characterized in that: Two transverse locking bolts (3-2) are installed on the transverse movable edge (3-1), and two longitudinal locking bolts (2-3) are installed on the longitudinal movable edge (2-1).
3. The adjustable screen printing mold frame according to claim 1 or 2, characterized in that: The thickness of the upper frame edge (1-1) is the same as the thickness of the right frame edge (1-2), the thickness of the left frame edge (1-4) is the same as the thickness of the lower frame edge (1-3), and the thickness of the left frame edge (1-4) and the thickness of the lower frame edge (1-3) are both smaller than the thickness of the upper frame edge (1-1).