Scraping printing device for silk-screen printing process
By incorporating a sliding connection structure between the slide plate and the slide table in the printing device, the problem of mismatched strokes between the doctor blade and the return blade is solved, achieving uniform ink distribution and improving the efficiency and quality of circuit board printing.
Patent Information
- Application Number
- CN202423168726.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In the screen printing process, the uncoordinated strokes of the squeegee and the return blade lead to uneven ink distribution, affecting the printing effect.
Design a squeegee printing device that uses a structure with two sets of sliding plates connected to a slide table to ensure that the squeegee and the return squeegee move in the same position and have the same stroke, thus achieving collaborative printing.
To ensure that the ink is evenly distributed on the screen, improve circuit board processing efficiency, and enhance printing results.
Smart Images
Figure CN223533185U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screen printing technology, and more specifically, to a squeegee device for screen printing processes. Background Technology
[0002] Screen printing of circuit boards is a process that transfers designed circuit patterns, solder mask layers, and character markings to the surface of a circuit board using screen printing technology. This is a key step in the circuit board manufacturing process and plays a vital role in ensuring the electrical performance, mechanical performance, and identifiability of the circuit board.
[0003] Currently, the circuit board printing process is as follows: First, select the appropriate screen material and mesh count according to the design requirements of the circuit board. Then, coat the screen with photosensitive adhesive or paste a photosensitive film. Place the circuit board to be printed on the printing platform and use the platform's positioning device to precisely fix the circuit board. Finally, using the mesh openings on the screen, under the action of the squeegee, the ink is allowed to pass through the mesh openings and be precisely deposited on the corresponding positions.
[0004] However, in the screen printing process, the ink return blade and the squeegee need to work closely together. If the stroke settings are not reasonable, problems of uncoordinated cooperation will occur. For example, if the ink return blade has not completed its ink return action, the squeegee will start scraping the ink, which will cause the ink on the screen to be scraped away before it is evenly distributed, affecting the printing effect. A squeegee device for screen printing process is proposed to improve the existing problems. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a squeegee device for screen printing process.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A squeegee device for screen printing includes a squeegee assembly, the bottom of which is provided with a platform assembly.
[0008] The squeegee assembly includes a support plate, a first electric slide rail on one side of the support plate, an electric slider on the side of the first electric slide rail away from the support plate, a squeegee mechanism on the side of the electric slider away from the first electric slide rail, and a screen printing plate below the squeegee mechanism.
[0009] The platform component includes a mounting platform, on the top of which two sets of second electric slide rails are symmetrically arranged, and a placement platform is arranged in the middle of the two sets of second electric slide rails.
[0010] By adopting the above technical solution, the shape of the first electric slide rail is adapted to the first slide groove, and the first electric slide rail can move linearly up and down along the first slide groove; the placement table has a vacuum adsorption function, which can adsorb the circuit board when it is placed on the top of the placement table. At the same time, during the circuit board printing process, the second electric slide rail can drive the placement table to achieve a translational position, so that the circuit board can be aligned with the position of the screen printing plate.
[0011] The present invention is further configured such that: the scratching mechanism includes a fixing block, the fixing block is fixedly connected to an electric slider, and a fixing frame is provided on one side of the fixing block.
[0012] The present invention is further configured such that: the fixing frame is fixedly connected to the fixing block, and two sets of cylinders are symmetrically arranged on the top of the fixing frame.
[0013] The present invention is further configured such that: the output ends of the two sets of cylinders are respectively connected to a set of sliding plates, and a sliding platform is provided in the middle position of the two sets of sliding plates.
[0014] The present invention is further configured such that: the slide is fixedly installed inside the fixed frame, and the slide slides relative to the slide plate.
[0015] By adopting the above technical solution, the fixing frame provides installation space for the slide table, which facilitates the installation of the slide table. A set of second slide grooves is provided on both sides of the slide table. The shape of the second slide grooves is adapted to the shape of the slide plate. In practical applications, the cylinder can control the slide plate to move along the slide table independently, reducing mutual interference between strokes.
[0016] The present invention is further configured such that: a set of clamps is connected to the bottom of each of the two sets of sliding plates, one set of clamps is connected to a doctor blade, and the other set of clamps is connected to a return blade.
[0017] By adopting the above technical solution, during the screen printing process, after the squeegee scrapes ink from one end of the screen to the other to complete the printing, the ink distribution on the screen becomes uneven. At this time, the main function of the return ink knife is to redistribute the ink evenly on the screen, providing a uniform ink layer for the next squeegee operation. By setting up a structure in which two sets of sliding plates are slidably connected to the slide table, the two sets of sliding plates move in the same position under the drive of the electric slider, that is, the squeegee and the return ink knife move in the same position, satisfying the condition for the squeegee and the return ink knife to print in tandem. The return ink knife and the squeegee are set one in front of the other. After the return ink knife completes the return ink work, the squeegee starts scraping ink again, with the strokes being consistent.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] 1. By setting up a structure in which both sets of sliding plates are slidably connected to the slide table, the two sets of sliding plates move to the same position under the drive of the electric slider, that is, the doctor blade and the return blade move to the same position, which satisfies the condition for the doctor blade and the return blade to print in tandem. The return blade and the doctor blade are set one in front of the other. After the return blade completes the return work, the doctor blade starts to scrape ink, and the stroke is consistent.
[0020] 2. By setting up a return ink blade, the main function of which is to redistribute the ink evenly on the screen printing plate, providing a uniform ink layer for the next ink scraping operation and improving the efficiency of circuit board processing. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of a squeegee device for screen printing process according to the present invention.
[0022] Figure 2 In this utility model Figure 1 Isometric side view.
[0023] Figure 3 This is a schematic diagram of the scraping mechanism in this utility model.
[0024] Figure 4 In this utility model Figure 3 A schematic diagram of the explosion structure.
[0025] Figure 5 This is a schematic diagram of the sliding table structure in this utility model.
[0026] Explanation of reference numerals in the attached drawings: 1. Squeegee assembly; 11. Support plate; 12. First electric slide rail; 13. Electric slider; 14. Squeegee mechanism; 141. Fixing block; 142. Cylinder; 143. Slide plate; 144. Fixing frame; 145. Clamp; 146. Squeegee blade; 147. Ink return blade; 148. Slide table; 15. Screen printing plate;
[0027] 2. Platform components; 21. Mounting platform; 22. Placement platform; 23. Second electric slide rail. Detailed Implementation
[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0030] Example 1, please refer to Figure 1-5 The present invention provides the following technical solution:
[0031] See Figure 1 A squeegee device for screen printing process includes a squeegee assembly 1, and a platform assembly 2 is provided at the bottom of the squeegee assembly 1.
[0032] See Figure 2 The squeegee assembly 1 includes a support plate 11, a first groove is provided on one side of the support plate 11, and a first electric slide rail 12 is provided on one side of the support plate 11. The shape of the first electric slide rail 12 is adapted to the first groove, and the first electric slide rail 12 can move linearly up and down along the first groove. An electric slider 13 is provided on the side of the first electric slide rail 12 away from the support plate 11, and a squeegee mechanism 14 is provided on the side of the electric slider 13 away from the first electric slide rail 12. A screen printing plate 15 is provided below the squeegee mechanism 14.
[0033] See Figure 2 Platform component 2 includes mounting platform 21. Two sets of second electric slide rails 23 are symmetrically arranged on the top of mounting platform 21. A placement platform 22 is arranged in the middle of the two sets of second electric slide rails 23. The placement platform 22 has a vacuum adsorption function. When the circuit board is placed on the top of the placement platform 22, the placement platform 22 can adsorb the circuit board. At the same time, during the circuit board printing process, the second electric slide rails 23 can drive the placement platform 22 to achieve position translation, so that the circuit board can be aligned with the position of the screen printing plate 15.
[0034] The actual process of printing a circuit board is as follows:
[0035] First, the circuit board is placed on the placement platform 22, which holds the circuit board in place. Then, the second electric slide rail 23 moves the placement platform 22. At this time, the first electric slide rail 12 is activated and moves downward in a straight line along the first slide groove until the screen printing plate 15 is in contact with the circuit board. The first electric slide rail 12 stops moving. Then, ink is placed on the plane of the screen printing plate 15. The electric slider 13 is then activated, which drives the squeegee mechanism 14 to print on the circuit board.
[0036] See Figure 3 and Figure 4 The scratching mechanism 14 includes a fixing block 141, which is fixedly connected to the electric slider 13. A fixing frame 144 is provided on one side of the fixing block 141.
[0037] See Figure 3 and Figure 4 The fixing frame 144 is fixedly connected to the fixing block 141. Two sets of cylinders 142 are symmetrically arranged on the top of the fixing frame 144. The fixing frame 144 provides installation space for the cylinders 142, which facilitates the placement of the cylinders 142.
[0038] See Figure 3-5The output ends of the two sets of cylinders 142 are respectively connected to a set of slide plates 143. A slide table 148 is set in the middle of the two sets of slide plates 143. The two sets of cylinders 142 control one set of slide plates 143 independently. The movement of the two sets of slide plates 143 will not interfere with each other, which meets the printing requirements.
[0039] See Figure 3-5 The slide 148 is fixedly installed inside the mounting bracket 144. The slide 148 slides relative to the slide plate 143. The mounting bracket 144 provides installation space for the slide 148, which facilitates the installation of the slide 148. A set of second slide grooves is provided on both sides of the slide 148. The shape of the second slide grooves is adapted to the shape of the slide plate 143. In practical applications, the cylinder 142 can independently control the slide plate 143 to move along the slide 148, reducing mutual interference between strokes.
[0040] See Figure 3-5 Each of the two sets of slide plates 143 has a set of clamps 145 connected to its bottom. One set of clamps 145 is connected to a doctor blade 146, and the other set of clamps 145 is connected to a return ink blade 147. The return ink blade 147 and the doctor blade 146 work together to complete the printing on the circuit board.
[0041] During the screen printing process, after the squeegee 146 scrapes ink from one end of the screen 15 to the other to complete the printing, the ink distribution on the screen 15 will become uneven. At this time, the main function of the return ink squeegee 147 is to redistribute the ink evenly on the screen 15, providing a uniform ink layer for the next squeegee operation.
[0042] The actual movement process of the ink scraper 147 and the doctor blade 146 is as follows:
[0043] The electric slider 13 drives the fixed block 141 to move linearly left and right. The fixed block 141 can drive the fixed frame 144 to move linearly left and right. In turn, the fixed frame 144 can drive the slide plate 143 to move left and right. The two sets of slide plates 143 can drive the ink return blade 147 and the ink scraper blade 146 connected to them to move linearly left and right respectively. During this left and right movement, the ink scraper blade 146 can perform the ink scraping action to complete the printing of the circuit board. After the ink scraper blade 146 completes the printing work, the ink return blade 147 completes the ink return action to provide a uniform ink layer for the next ink scraping operation.
[0044] However, in practical applications, the ink return action of the ink return blade 147 is not completed before the ink scraper blade 146 starts scraping ink, which causes the ink on the screen 15 to be scraped away before it is evenly distributed, affecting the printing effect. At this time, by setting up a structure in which both sets of sliding plates 143 are slidably connected to the slide table 148, the two sets of sliding plates 143 move to the same position under the drive of the electric slider 13, that is, the ink scraper blade 146 and the ink return blade 147 move to the same position, which satisfies the condition for the ink scraper blade 146 and the ink return blade 147 to print together. The ink return blade 147 and the ink scraper blade 146 are set one in front of the other. After the ink return blade 147 completes the ink return work, the ink scraper blade 146 starts scraping ink, and the stroke is consistent, which solves the problem of inconsistent stroke.
[0045] In addition, by setting two sets of cylinders 142 to control one set of slide plates 143 respectively, that is, to control the doctor blade 146 and the ink return blade 147 respectively, the ink return blade 147 and the doctor blade 146 can complete their respective ink return and ink scraping actions independently. At the same time, when the doctor blade 146 touches the corner of the screen 15, the doctor blade 146 can be lifted by the cylinder 142, and the electric slider 13 continues to move outward. At this time, the ink return blade 147 can scrape the position previously covered by the doctor blade 146, so that the ink is distributed more evenly on the screen 15.
[0046] Specifically, firstly, the circuit board is placed on the placement platform 22, which holds the circuit board in place. Then, the second electric slide rail 23 moves the placement platform 22. At this time, the first electric slide rail 12 is activated and moves downward in a straight line along the first slide groove until the screen printing plate 15 is in contact with the circuit board. The first electric slide rail 12 then stops moving. Next, ink is placed on the plane of the screen printing plate 15. Then, the electric slider 13 is activated, and the ink scraper 146 of the electric slider 13 performs the ink scraping action to complete the printing of the circuit board. After the ink scraper 146 completes the printing work, the ink return blade 147 completes the ink return action to provide a uniform ink layer for the next ink scraping operation.
[0047] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
Claims
1. A squeegee device for screen printing process, characterized in that: It includes a scratch-off component (1), and a platform component (2) is provided at the bottom of the scratch-off component (1). The squeegee assembly (1) includes a support plate (11), a first electric slide rail (12) is provided on one side of the support plate (11), an electric slider (13) is provided on the side of the first electric slide rail (12) away from the support plate (11), a squeegee mechanism (14) is provided on the side of the electric slider (13) away from the first electric slide rail (12), and a screen printing plate (15) is provided below the squeegee mechanism (14). The platform component (2) includes a mounting platform (21), on which two sets of second electric slide rails (23) are symmetrically arranged on the top of the mounting platform (21), and a placement platform (22) is arranged in the middle of the two sets of second electric slide rails (23).
2. The squeegee device for screen printing process according to claim 1, characterized in that: The scraping mechanism (14) includes a fixing block (141), which is fixedly connected to the electric slider (13), and a fixing frame (144) is provided on one side of the fixing block (141).
3. The squeegee device for screen printing process according to claim 2, characterized in that: The fixing frame (144) is fixedly connected to the fixing block (141), and two sets of cylinders (142) are symmetrically arranged on the top of the fixing frame (144).
4. A squeegee for screen printing according to claim 3, characterized in that: The output ends of the two sets of cylinders (142) are respectively connected to a set of slide plates (143), and a slide table (148) is provided in the middle of the two sets of slide plates (143).
5. A squeegee for screen printing according to claim 4, characterized in that: The slide (148) is fixedly installed inside the fixed frame (144), and the slide (148) slides relative to the slide plate (143).
6. A squeegee for screen printing according to claim 5, characterized in that: The bottom of each of the two sets of slide plates (143) is connected to a set of clamps (145), one set of clamps (145) is connected to a doctor blade (146), and the other set of clamps (145) is connected to a reflow blade (147).