An ink blade device for a screen printing machine

Abstract

The application discloses an ink squeegee device for a screen printing machine and relates to the technical field of screen printing machines.The device comprises a moving frame, a movable frame arranged below the moving frame, an electric push rod fixedly installed at the top of the moving frame, and a movable end of the electric push rod fixedly connected with the movable frame through the moving frame; the top of the movable frame is symmetrically provided with guide rods, the two guide rods are slidably connected with the moving frame; the device further comprises a fixed plate symmetrically arranged at the bottom of the movable frame; after the squeegee body is reset and moved after use, the squeegee body can be automatically cleaned, the two squeegee bodies can be intermittently used, the abrasion of the two squeegee bodies is reduced, the service life is prolonged, and the squeegee body can avoid ink dripping during the cleaning process, thereby avoiding affecting subsequent printing work, avoiding cleaning during shutdown, facilitating continuous printing work, and improving practicability.

Description

Technical Field

[0001] This invention relates to the field of screen printing machine technology, specifically to an ink doctor blade device for screen printing machines. Background Technology

[0002] During screen printing, the substrate is placed on the printing platform. Printing is performed using the basic principle that ink passes through the mesh openings of the screen printing plate in the image areas, while ink does not pass through the mesh openings in the non-image areas. Ink is poured into one end of the screen printing plate, and a squeegee applies pressure to the ink-covered areas while moving towards the other end. During this movement, the ink is forced from the image areas of the mesh onto the substrate by the squeegee.

[0003] For example, an automatic temperature control transformer with announcement number CN216733457U allows for adjustment of the doctor blade angle via a rotating component, thereby adjusting the printing scraping angle and avoiding the need to replace blades with different angles, thus improving ease of use. Simultaneously, a cleaning component effectively removes material from the doctor blade surface, facilitating cleaning and maintenance. When applying ink to a doctor blade, a certain amount of ink adheres to it. If this ink is not cleaned promptly, it will solidify and stick to the doctor blade, affecting its subsequent accuracy and increasing the difficulty of cleaning. While directly cleaning the ink can improve the doctor blade's performance... Cleaning the squeegee requires stopping its use, which takes up printing time, prevents continuous processing, and reduces work efficiency. Furthermore, cleaning the squeegee can cause ink dripping. While cleaning by resetting the squeegee avoids scraping ink during resetting and can save time, it also leads to ink dripping. This dripping makes it difficult to place the printing substrate, affecting the printing quality. If the squeegee is not cleaned during resetting, the ink still adhered to it may drip, presenting certain drawbacks.

[0004] Therefore, we propose an ink doctor blade device for screen printing machines to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide an ink doctor blade device for a screen printing machine, so as to solve the problem mentioned in the background art that although the doctor blade can be cleaned by directly cleaning the ink, the use of the doctor blade needs to be stopped during the cleaning process, which will occupy printing time, prevent continuous processing, and result in low work efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an ink scraper device for a screen printing machine, comprising a movable frame, a movable frame disposed below the movable frame, and an electric push rod fixedly installed on the top of the movable frame, wherein the movable end of the electric push rod passes through the movable frame and is fixedly connected to the movable frame, and guide rods are symmetrically installed on the top of the movable frame, and both guide rods are slidably connected to the movable frame.

[0007] Also includes:

[0008] Fixed plates are symmetrically installed at the bottom of the movable frame, and a rotating plate is set between the two fixed plates;

[0009] A scraper assembly is disposed on both sides inside the rotating plate, and the scraper assembly includes a mounting bracket;

[0010] Positioning components are symmetrically arranged on both sides of the mounting bracket;

[0011] The adjustment component is located below the left-side fixed plate;

[0012] The mounting bracket is slidably connected inside the two connecting slots. The scraper body is inserted into one side of the inside of each mounting bracket, and the mounting slot is opened on one side of the inside of the mounting bracket. The mounting strip is fixedly installed on one side of the scraper body, and the mounting strip is inserted into the mounting slot. Two sets of support brackets are symmetrically installed on the upper and lower sides of the rotating plate, and two rubber scrapers are hinged between the two support brackets on each side. A torsion spring is provided at the connection between the rubber scraper and the support bracket, and the torsion spring is in a stretched state.

[0013] Preferably, a rotating shaft is rotatably connected to the lower side of each of the two fixed plates that are close to each other, and a rotating frame is fixedly installed at the lower end of each of the two rotating shafts that are close to each other. An adjusting plate is fixedly installed at the lower end of each of the two rotating frames that are close to each other. Meanwhile, a rotating rod is rotatably connected to the lower side of each of the two adjusting plates, and the lower end of each of the two rotating rods that are close to each other is fixedly connected to the rotating plate. Furthermore, the rotating plate has symmetrically opened connecting grooves inside.

[0014] By adopting the above technical solution, it is easy to control the rotation of the rotating plate.

[0015] Preferably, one side of each of the two sets of rubber scrapers abuts against the two scraper bodies, and a temporary storage box is fixedly installed on one side of each rubber scraper. Two sets of sliding grooves are symmetrically opened on one side of the two connecting grooves inside the rotating plate. Limiting rods are slidably connected inside the sliding grooves, and the two sets of limiting rods are fixedly connected to two mounting brackets respectively.

[0016] By adopting the above technical solution, the movement of the mounting bracket is supported and limited.

[0017] Preferably, the rotating plate has positioning rods slidably connected to both sides of the two mounting brackets, and two sets of movable plates are fixedly installed at the ends of the two positioning rods away from the mounting brackets. A telescopic spring is sleeved on the outer side of the two positioning rods, and the two ends of the telescopic spring are fixedly connected to the rotating plate and the movable plate respectively. The two mounting brackets have symmetrical positioning grooves on both sides, and the positioning rods are inserted into the positioning grooves. A ball bearing is hinged at the end of the positioning rod away from the movable plate.

[0018] By adopting the above technical solution, the mounting bracket can be positioned.

[0019] Preferably, movable plates are symmetrically mounted with movable seats on both sides of the two positioning rods, and the rotating plate is fixedly mounted with a limit frame on one side of each of the two movable seats. A connecting plate is slidably connected inside the limit frame, and a U-shaped frame is fixedly mounted on one end of the connecting plate. A column is fixedly mounted on the inner side of the U-shaped frame, and a movable slot is opened through one side of the movable seat. The column is slidably connected to the movable slot.

[0020] By adopting the above technical solution, the movement of the connecting plate can drive the movement of the moving plate.

[0021] Preferably, an L-shaped frame is fixedly installed on one side of the U-shaped frame, and a fixed seat is fixedly installed on the end of the L-shaped frame away from the U-shaped frame. The fixed seat is rotatably connected to a roller. At the same time, mounting seats are symmetrically installed above the sides of the two adjusting plates that are close to each other, and the two rollers above abut against the mounting seats.

[0022] By adopting the above technical solution, the L-shaped frame can be moved after the roller contacts the mounting base.

[0023] Preferably, the positioning component includes two sets of mounting blocks symmetrically installed on both sides of the mounting frame, and a baffle is rotatably connected between the two mounting blocks. A positioning plate is fixedly installed on the side of the baffle close to the scraper body, and one side of the positioning plate abuts against the scraper body. The mounting frame is fixedly installed on both baffles, and positioning bolts are symmetrically inserted on both sides of the positioning seats. Threaded holes are symmetrically opened on both sides of the baffle, and the positioning bolts are threadedly connected to the threaded holes.

[0024] By adopting the above technical solution, the scraper body is positioned, which facilitates the disassembly and assembly of the scraper body.

[0025] Preferably, the adjustment assembly includes a drive motor fixedly installed below one side of the left adjustment plate, and the output end of the drive motor passes through the adjustment plate and is fixedly connected to a rotating rod on one side. One end of the left rotating shaft passes through the fixed plate and is fixedly installed with a worm gear. Meanwhile, support blocks are symmetrically installed on one side of the left fixed plate above the worm gear, and a worm is rotatably connected between the two support blocks, and the worm gear meshes with the worm gear.

[0026] By adopting the above technical solution, the angle of the scraper body can be easily adjusted.

[0027] Preferably, a hydraulic push rod is fixedly installed on the front of the left fixed plate, and a push plate is fixedly installed on the movable end of the hydraulic push rod. One end of the worm gear passes through a side support block and is fixedly installed with a rotating gear. Meanwhile, a toothed plate is fixedly installed on one side of the push plate, and the rotating gear meshes with the toothed plate. A guide rod is fixedly installed on the bottom of the push plate, and a guide frame slides on the outer side of the guide rod. The guide frame is fixedly connected to the fixed plate.

[0028] By adopting the above technical solution, the movement of the push plate can drive the adjustment plate to rotate.

[0029] Compared with the prior art, the beneficial effects of the present invention are: the ink doctor blade device for screen printing machine allows the doctor blade body to be automatically cleaned after being reset and moved after use, and the two doctor blade bodies can be used intermittently, reducing the wear of the two doctor blade bodies and extending their service life. Moreover, the doctor blade body can avoid ink dripping during the cleaning process, avoiding affecting subsequent printing work, avoiding machine downtime for cleaning, facilitating continuous printing work, and improving practicality;

[0030] 1. The movable frame is mounted on the screen printing machine and can reciprocate, allowing the squeegee body to scrape and squeeze the ink. When the squeegee body needs to be reset after its movement, the rotating plate rotates a quarter turn between the two adjusting plates. During this rotation, the two sets of L-shaped frames below the rotating plate rotate in a circular motion. After the movable frame resets, the rotating plate continues to rotate a quarter turn. At this point, when the L-shaped frames rotate to the top, they can abut against the mounting base. Then, the rotating plate continues to rotate, and the rollers rotate on the bottom surface of the mounting base. Since the bottom edge of the mounting base is parallel to the mounting frame, the L-shaped frames can move downwards during their circular rotation, which can drive the connecting plate and the movable seat to move. After the movable seat moves, it can be pushed to move further through the sliding connection between the column and the movable slot on the movable seat. This allows the movable plate to move away from the mounting bracket. After the movable plate moves, it stretches the telescopic spring, which in turn moves the positioning rod. The spring constant is not too small to prevent accidental movement of the movable plate. After the positioning rod moves, it disengages from the positioning slot on the mounting bracket, causing the mounting bracket to lose its limiting position. When the lower mounting bracket rotates to the upper position, the mounting bracket, losing its limiting position, moves the scraper body downwards under gravity, causing the mounting bracket to slide in the connecting slot. After the scraper body moves downwards, the two rubber scrapers can scrape the two sides of the scraper body, and the torsion spring on the support frame is in a stretched state, ensuring that the two rubber scrapers are always in contact with the scraper body. During the cleaning process, ink can accumulate at the top of the rubber scraper. After cleaning, the rubber scraper is tilted, allowing... The removed ink can enter the temporary storage box. Then, the moving frame resets and moves. Ink adhering to the recently used scraper body is automatically cleaned, preventing ink dripping. Before the moving frame resets, the rotating plate rotates a quarter turn. At this point, the recently used scraper body is not yet cleaned, but the scraper body is in a horizontal position, so ink won't easily drip. Similarly, the previously used scraper body rotates a quarter turn, preventing ink remaining in the temporary storage box from easily dripping. After the moving frame resets, the rotating plate continues to rotate a quarter turn, causing the previously used scraper body to rotate downwards. The scraper body moves under gravity, causing the mounting bracket to move down in the connecting slot. After the mounting bracket moves, the positioning rod aligns with the positioning slot. Under the action of the telescopic spring, the positioning rod... The mounting bracket is positioned by inserting it into the positioning slot. At this point, the cleaned squeegee body can scrape ink, while the squeegee body, which was just used, is cleaned from above. The ink cleaned from the two rubber squeegees slowly flows into the upper storage box during the printing process. This allows the squeegee body to automatically clean itself after use and reset. When the squeegee body is used again to scrape ink, the ink temporarily stored in the storage box can flow back to the tip of the squeegee body for reuse. The two squeegee bodies rotate intermittently; they do not move vertically. After cleaning the tips of the squeegee bodies, the cleaned ink can be temporarily stored, allowing the squeegee body to function even when not scraping ink.This design prevents the cleaned ink from flowing to the tip of the doctor blade body under gravity, and avoids ink adhering to the tip when the doctor blade body scrapes ink again. If ink adheres to the tip during the initial scraping process, it can affect the uniformity of the printing process, thus improving work quality. It allows for intermittent use of the two doctor blade bodies, reducing wear and extending their service life. Furthermore, it prevents ink dripping during cleaning, avoiding disruption to subsequent printing operations and eliminating the need for machine downtime for cleaning. This facilitates continuous printing and enhances practicality.

[0031] 2. When the scraper body needs to be replaced, unscrew the two sets of positioning bolts to remove the baffle from its position. Then, rotate the baffle so that the positioning plate no longer abuts against the scraper body. The scraper body can then be pulled out laterally, separating the mounting strip from the mounting groove. The scraper body can then be disassembled. When installing the scraper body, insert the mounting strip into the mounting groove, then rotate the baffle to position the scraper body. Finally, screw in the positioning bolts to position the baffle, completing the installation of the scraper body. This facilitates the disassembly and replacement of the scraper body, improving its practicality.

[0032] 3. When it is necessary to control the rotation of the rotating plate, the drive motor can drive the rotating rod to rotate, causing the rotating plate to rotate. When the squeegee body is in use and printing on different types of printing substrates, the hydraulic push rod can be activated to drive the push plate to move. Then, through the meshing of the toothed plate and the rotating gear, the worm gear can be driven to rotate. The worm gear can drive the worm wheel to rotate, which in turn drives the rotating shaft to rotate, causing the adjusting plate to rotate. This allows the tilt angle of the squeegee body to be adjusted, facilitating fine-tuning of the squeegee body's angle. Furthermore, a tilt sensor can be installed on the adjusting plate to improve the adjustment accuracy, thereby facilitating the adjustment of the squeegee body's angle and improving the applicability of printing. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the scraper assembly structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the cross-sectional structure of the rotating plate of the present invention;

[0036] Figure 4 For the present invention Figure 2 Enlarged structural diagram of region A in the middle;

[0037] Figure 5 For the present invention Figure 3 Enlarged structural diagram of region B in the middle;

[0038] Figure 6 This is a schematic diagram of the positioning rod structure of the present invention;

[0039] Figure 7 This is a partial structural diagram of the scraper assembly of the present invention;

[0040] Figure 8 This is a schematic diagram of the positioning component structure of the present invention;

[0041] Figure 9 For the present invention Figure 1 A magnified structural diagram of region C in the middle.

[0042] In the diagram: 1. Movable frame; 101. Movable frame; 102. Electric push rod; 103. Guide rod; 104. Fixed plate; 105. Rotating shaft; 106. Rotating frame; 107. Adjusting plate; 108. Rotating rod; 109. Rotating plate; 110. Connecting groove; 2. Scraper assembly; 201. Mounting frame; 202. Scraper body; 203. Mounting groove; 204. Mounting strip; 205. Support frame; 206. Rubber scraper; 207. Torsion spring; 208. Temporary storage box; 209. Sliding groove; 2091. Limiting rod; 210. Movable plate; 211. Positioning rod; 212. Telescopic spring; 213. Positioning groove; 214. Ball bearing; 215. Movable seat; 216. Movable groove; 217. Limiting frame; 218. Connecting plate; 219. U-shaped frame; 220. Column; 221. L-shaped frame; 222. Fixed seat; 223. Roller; 224. Mounting seat; 3. Positioning assembly; 301. Mounting block; 302. Baffle; 303. Positioning plate; 304. Positioning seat; 305. Positioning bolt; 306. Threaded hole; 4. Adjusting assembly; 401. Drive motor; 402. Worm gear; 403. Support block; 404. Worm; 405. Rotating gear; 406. Hydraulic push rod; 407. Push plate; 408. Toothed plate; 409. Guide rod; 410. Guide frame. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1-9The present invention provides a technical solution: an ink scraper device for a screen printing machine, including a movable frame 1, a movable frame 101 below the movable frame 1, and an electric push rod 102 fixedly installed on the top of the movable frame 1. The movable end of the electric push rod 102 passes through the movable frame 1 and is fixedly connected to the movable frame 101. Meanwhile, guide rods 103 are symmetrically installed on the top of the movable frame 101, and both guide rods 103 are slidably connected to the movable frame 1.

[0045] Also includes:

[0046] Fixed plates 104 are symmetrically installed at the bottom of the movable frame 101, and a rotating plate 109 is provided between the two fixed plates 104;

[0047] Scraper assembly 2 is disposed on both sides inside the rotating plate 109, and scraper assembly 2 includes mounting bracket 201;

[0048] Mounting bracket 201 is slidably connected inside the two connecting slots 110. A scraper body 202 is inserted into one side of the inside of each mounting bracket 201. A mounting slot 203 is opened on one side of the inside of the mounting bracket 201. An mounting strip 204 is fixedly installed on one side of the scraper body 202. The mounting strip 204 is inserted into the mounting slot 203. Two sets of support brackets 205 are symmetrically installed on the upper and lower sides of the rotating plate 109. Two rubber scrapers 206 are hinged between the two support brackets 205 on each side. A torsion spring 207 is provided at the connection between the rubber scraper 206 and the support bracket 205. The torsion spring 207 is in a stretched state.

[0049] Two fixed plates 104 are rotatably connected to a rotating shaft 105 on their adjacent sides. A rotating frame 106 is fixedly installed at the adjacent ends of the two rotating shafts 105. An adjusting plate 107 is fixedly installed at the adjacent ends of the two rotating frames 106. A rotating rod 108 is rotatably connected between the two adjusting plates 107 on their lower sides. The adjacent ends of the two rotating rods 108 are fixedly connected to a rotating plate 109. A connecting groove 110 is symmetrically opened inside the rotating plate 109.

[0050] One side of each of the two sets of rubber scrapers 206 abuts against the two scraper bodies 202, and a temporary storage box 208 is fixedly installed on one side of the rubber scraper 206. Two sets of sliding grooves 209 are symmetrically opened on one side of the two connecting grooves 110 inside the rotating plate 109. At the same time, the sliding grooves 209 are slidably connected to the inside of the sliding grooves 209, and the two sets of limiting rods 2091 are fixedly connected to the two mounting brackets 201 respectively.

[0051] Inside the rotating plate 109, positioning rods 211 are slidably connected to both sides of the two mounting brackets 201. Two sets of movable plates 210 are fixedly installed at the ends of the two sets of positioning rods 211 away from the mounting brackets 201. A telescopic spring 212 is sleeved on the outer side of the two sets of positioning rods 211. The two ends of the telescopic spring 212 are fixedly connected to the rotating plate 109 and the movable plate 210 respectively. Positioning grooves 213 are symmetrically opened on both sides of the two mounting brackets 201. The positioning rods 211 are inserted into the positioning grooves 213. A ball bearing 214 is hinged to the end of the positioning rod 211 away from the movable plate 210.

[0052] The movable plate 210 is symmetrically equipped with movable seats 215 on both sides of the two positioning rods 211, and the rotating plate 109 is fixedly equipped with limit frames 217 on one side of the two movable seats 215. The limit frame 217 is slidably connected to the inside of the limit frame 217, and a U-shaped frame 219 is fixedly installed at one end of the connecting plate 218. A column rod 220 is fixedly installed on the inner side of the U-shaped frame 219. A movable groove 216 is opened through one side of the movable seat 215, and the column rod 220 is slidably connected to the movable groove 216.

[0053] An L-shaped frame 221 is fixedly installed on one side of the U-shaped frame 219, and a fixed seat 222 is fixedly installed on the end of the L-shaped frame 221 away from the U-shaped frame 219. A roller 223 is rotatably connected inside the fixed seat 222. At the same time, mounting seats 224 are symmetrically installed on the upper side of the two adjusting plates 107 that are close to each other, and the two upper rollers 223 abut against the mounting seats 224.

[0054] Example 1: As Figures 1-7As shown, the movable frame 1 is mounted on the screen printing machine. The movable frame 1 can move back and forth, causing the squeegee body 202 to scrape and squeeze the ink. When the squeegee body 202 needs to be reset after moving, the rotating plate 109 rotates a quarter turn between the two adjusting plates 107. During the rotation of the rotating plate 109, the two sets of L-shaped frames 221 below rotate circumferentially. After the movable frame 1 is reset, the rotating plate 109 continues to rotate a quarter turn. At this time, when the L-shaped frame 221 rotates to the top, it can abut against the mounting base 224. Then the rotating plate 109 continues to rotate the roller 223 on the bottom surface of the mounting base 224. Since the bottom edge of the mounting base 224 is parallel to the mounting frame 201, the L-shaped frame 221 can move downwards during the circumferential rotation. The movement of the connecting plate 218 and the movable seat 215 can cause the movable seat 215 to move. After the movable seat 215 moves, it can be pushed to move through the sliding connection between the column rod 220 and the movable groove 216 on the movable seat 215. This, in turn, can push the movable plate 210 away from the mounting frame 201. After the movable plate 210 moves, it can stretch the telescopic spring 212 and drive the positioning rod 211 to move. The elastic coefficient of the telescopic spring 212 will not be too small to prevent the movable plate 210 from moving accidentally. After the positioning rod 211 moves, it can disengage from the positioning groove 213 on the mounting frame 201, causing the mounting frame 201 to lose its limit. When the lower mounting frame 201 rotates to the upper position, the mounting frame 201 loses its limit and, under the action of gravity, drives the scraper body 202 to move downward, thus... The mounting bracket 201 slides in the connecting groove 110. After the scraper body 202 moves down, the two rubber scrapers 206 can scrape the two sides of the scraper body 202. The torsion spring 207 on the support frame 205 is in a stretched state, so that the two rubber scrapers 206 are always in contact with the scraper body 202. During the cleaning process, the ink can accumulate on the top of the rubber scraper 206. After cleaning, the rubber scraper 206 is tilted so that the cleaned ink can enter the temporary storage box 208. Then the moving frame 1 is reset and moved. The ink attached to the scraper body 202 that was just used can be automatically cleaned and ink dripping is avoided. Before the moving frame 1 is reset, the rotating plate 109 rotates a quarter turn. At this time, the scraper body 202 that was just used 02. Although not yet cleaned, the scraper body 202 is in a horizontal position, preventing ink from dripping easily. The scraper body 202 used previously rotates a quarter turn, and the ink remaining in the temporary storage box 208 from the previous use also prevents dripping. After the moving frame 1 resets, the rotating plate 109 continues to rotate a quarter turn, causing the previously used scraper body 202 to rotate downwards. The scraper body 202 moves under gravity, causing the mounting bracket 201 to move downwards in the connecting groove 110. After the mounting bracket 201 moves, the positioning rod 211 aligns with the positioning groove 213. Under the action of the telescopic spring 212, the positioning rod 211 inserts into the positioning groove 213 to position the mounting bracket 201. At this point, the cleaned scraper body 202 can scrape and squeeze ink.The doctor blade body 202, after its initial use, is cleaned from above. The ink cleaned from the two rubber squeegees 206 slowly flows into the upper storage box 208 during the printing process. This allows the doctor blade body 202 to automatically clean itself after resetting and moving back to its original position. When the doctor blade body 202 is used again to scrape ink, the ink temporarily stored in the storage box 208 can flow back to the tip of the doctor blade body 202, allowing for reuse. Furthermore, the two doctor blade bodies 202 rotate intermittently and do not move vertically. After cleaning the tips of the doctor blade bodies 202, the cleaned ink can be temporarily stored, allowing the doctor blade... When not scraping ink, the body 202 prevents the cleaned ink from flowing to the tip of the squeegee body 202 under gravity. It also prevents ink from adhering to the tip when scraping ink again. If ink adheres to the tip during scraping, it can affect the uniformity of the printing process in the initial scraping operation, thus improving work quality. This allows for intermittent use of the two squeegee bodies 202, reducing wear and extending their service life. Furthermore, the cleaning process prevents ink dripping, avoiding disruption to subsequent printing operations and eliminating the need for machine downtime for cleaning. This facilitates continuous printing and enhances practicality.

[0055] Positioning components 3 are symmetrically arranged on both sides of the mounting bracket 201;

[0056] The positioning component 3 includes two sets of mounting blocks 301 symmetrically installed on both sides of the mounting bracket 201, and a baffle 302 is rotatably connected between the two mounting blocks 301. A positioning plate 303 is fixedly installed on the side of the baffle 302 near the scraper body 202, and one side of the positioning plate 303 abuts against the scraper body 202. A positioning seat 304 is fixedly installed on both sides of the mounting bracket 201 located on the two baffles 302. Positioning bolts 305 are symmetrically inserted on both sides of the positioning seat 304. Threaded holes 306 are symmetrically opened on both sides of the baffle 302, and the positioning bolts 305 are threadedly connected to the threaded holes 306.

[0057] Example 2: Figure 7 and Figure 8As shown, when the scraper body 202 needs to be replaced, unscrew the two sets of positioning bolts 305 to remove the baffle 302 from its limit position. Then, rotate the baffle 302 so that the positioning plate 303 no longer abuts against the scraper body 202, and pull the scraper body 202 out laterally. This separates the mounting strip 204 from the mounting groove 203, allowing the scraper body 202 to be disassembled. When installing the scraper body 202, insert the mounting strip 204 into the mounting groove 203, then rotate the baffle 302 to position the scraper body 202. Finally, screw in the positioning bolts 305 to position the baffle 302, completing the installation of the scraper body 202. This facilitates the disassembly and replacement of the scraper body 202, improving its practicality.

[0058] Adjustment component 4 is located below the left fixed plate 104;

[0059] The adjustment assembly 4 includes a drive motor 401 fixedly installed below one side of the left adjustment plate 107, and the output end of the drive motor 401 passes through the adjustment plate 107 and is fixedly connected to a rotating rod 108 on one side. One end of the left rotating shaft 105 passes through the fixed plate 104 and is fixedly installed with a worm gear 402. Meanwhile, support blocks 403 are symmetrically installed on one side of the left fixed plate 104 above the worm gear 402. A worm 404 is rotatably connected between the two support blocks 403, and the worm 404 is meshed with the worm gear 402.

[0060] A hydraulic push rod 406 is fixedly installed on the front of the left fixed plate 104, and a push plate 407 is fixedly installed on the movable end of the hydraulic push rod 406. One end of the worm gear 404 passes through a side support block 403 and is fixedly installed with a rotating gear 405. Meanwhile, a toothed plate 408 is fixedly installed on one side of the push plate 407, and the rotating gear 405 meshes with the toothed plate 408. A guide rod 409 is fixedly installed at the bottom of the push plate 407, and a guide frame 410 slides on the outer side of the guide rod 409. The guide frame 410 is fixedly connected to the fixed plate 104.

[0061] Example 3: Figure 1 and Figure 9As shown, when it is necessary to control the rotation of the rotating plate 109, the drive motor 401 can drive the rotating rod 108 to rotate, causing the rotating plate 109 to rotate. When the squeegee body 202 is in use, when printing on different types of printing substrates, the hydraulic push rod 406 can be activated to drive the push plate 407 to move. Then, the meshing of the toothed plate 408 and the rotating gear 405 can drive the worm gear 404 to rotate. The worm gear 404 can drive the worm wheel 402 to rotate, which in turn can drive the rotating shaft 105 to rotate, causing the adjusting plate 107 to rotate. This allows the tilt angle of the squeegee body 202 to be adjusted, facilitating fine-tuning of the angle of the squeegee body 202. Furthermore, a tilt sensor can be installed on the adjusting plate 107 to improve the adjustment accuracy, thereby facilitating the adjustment of the angle of the squeegee body 202 and improving the applicability of printing.

[0062] Working principle: When using the ink squeegee device for screen printing machines, firstly, according to... Figures 1-9As shown, the movable frame 1 is mounted on the screen printing machine. The movable frame 1 can move back and forth, causing the squeegee body 202 to scrape and squeeze the ink. When the squeegee body 202 needs to be reset after moving, the rotating plate 109 rotates a quarter turn between the two adjusting plates 107. During the rotation of the rotating plate 109, the two sets of L-shaped frames 221 below rotate circumferentially. After the movable frame 1 is reset, the rotating plate 109 continues to rotate a quarter turn. At this time, when the L-shaped frame 221 rotates to the top, it can abut against the mounting base 224. Then the rotating plate 109 continues to rotate the roller 223 on the bottom surface of the mounting base 224. Since the bottom edge of the mounting base 224 is parallel to the mounting frame 201, the L-shaped frame 221 can move downwards during the circumferential rotation. The movement of the connecting plate 218 and the movable seat 215 can cause the movable seat 215 to move. After the movable seat 215 moves, it can be pushed to move through the sliding connection between the column rod 220 and the movable groove 216 on the movable seat 215. This, in turn, can push the movable plate 210 away from the mounting frame 201. After the movable plate 210 moves, it can stretch the telescopic spring 212 and drive the positioning rod 211 to move. The elastic coefficient of the telescopic spring 212 will not be too small to prevent the movable plate 210 from moving accidentally. After the positioning rod 211 moves, it can disengage from the positioning groove 213 on the mounting frame 201, causing the mounting frame 201 to lose its limit. When the lower mounting frame 201 rotates to the upper position, the mounting frame 201 loses its limit and, under the action of gravity, drives the scraper body 202 to move downward, thus... The mounting bracket 201 slides in the connecting groove 110. After the scraper body 202 moves down, the two rubber scrapers 206 can scrape the two sides of the scraper body 202. The torsion spring 207 on the support frame 205 is in a stretched state, so that the two rubber scrapers 206 are always in contact with the scraper body 202. During the cleaning process, the ink can accumulate on the top of the rubber scraper 206. After cleaning, the rubber scraper 206 is tilted so that the cleaned ink can enter the temporary storage box 208. Then the moving frame 1 is reset and moved. The ink attached to the scraper body 202 that was just used can be automatically cleaned and ink dripping is avoided. Before the moving frame 1 is reset, the rotating plate 109 rotates a quarter turn. At this time, the scraper body 202 that was just used 02. Although not yet cleaned, the scraper body 202 is in a horizontal position, preventing ink from dripping easily. The scraper body 202 used previously rotates a quarter turn, and the ink remaining in the temporary storage box 208 from the previous use also prevents dripping. After the moving frame 1 resets, the rotating plate 109 continues to rotate a quarter turn, causing the previously used scraper body 202 to rotate downwards. The scraper body 202 moves under gravity, causing the mounting bracket 201 to move downwards in the connecting groove 110. After the mounting bracket 201 moves, the positioning rod 211 aligns with the positioning groove 213. Under the action of the telescopic spring 212, the positioning rod 211 inserts into the positioning groove 213 to position the mounting bracket 201. At this point, the cleaned scraper body 202 can scrape and squeeze ink.The squeegee body 202, which was just used, cleans the ink above, and the ink cleaned from the two rubber squeegees 206 can slowly flow into the temporary storage box 208 above during this printing process;

[0063] When the scraper body 202 needs to be replaced, unscrew the two sets of positioning bolts 305 to release the baffle 302 from its limit position. Then, rotate the baffle 302 so that the positioning plate 303 no longer abuts against the scraper body 202, allowing the scraper body 202 to be pulled out laterally, separating the mounting strip 204 from the mounting groove 203. The scraper body 202 can then be disassembled. When installing the scraper body 202, insert the mounting strip 204 into the mounting groove 203, then rotate the baffle 302 to position the scraper body 202. Finally, screw in the positioning bolts 305 to position the baffle 302, completing the installation of the scraper body 202. When it is necessary to control the rotation of the rotating plate 109, use the drive... The motor 401 can drive the rotating rod 108 to rotate, causing the rotating plate 109 to rotate. When the squeegee body 202 is in use, when printing on different types of printing substrates, the hydraulic push rod 406 can be activated to drive the push plate 407 to move. Then, the meshing of the toothed plate 408 and the rotating gear 405 can drive the worm gear 404 to rotate. The worm gear 404 can drive the worm wheel 402 to rotate, which in turn can drive the rotating shaft 105 to rotate, causing the adjusting plate 107 to rotate. This allows the tilt angle of the squeegee body 202 to be adjusted, facilitating fine-tuning of the angle of the squeegee body 202. Furthermore, a tilt sensor can be installed on the adjusting plate 107 to improve the accuracy of the adjustment.

[0064] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ink scraper device for a screen printing machine, comprising a movable frame (1), a movable frame (101) is provided below the movable frame (1), and an electric push rod (102) is fixedly installed on the top of the movable frame (1), and the movable end of the electric push rod (102) passes through the movable frame (1) and is fixedly connected to the movable frame (101), while guide rods (103) are symmetrically installed on the top of the movable frame (101), and both guide rods (103) are slidably connected to the movable frame (1); Its features are, Also includes: Fixed plates (104) are symmetrically installed at the bottom of the movable frame (101), and a rotating plate (109) is provided between the two fixed plates (104). The scraper assembly (2) is disposed on both sides inside the rotating plate (109), and the scraper assembly (2) includes a mounting bracket (201). Positioning components (3) are symmetrically arranged on both sides of the mounting bracket (201); Adjustment component (4) is located below the left fixed plate (104); Mounting bracket (201) is slidably connected inside two connecting slots (110). A scraper body (202) is inserted into one side of the interior of each of the two mounting brackets (201). An installation slot (203) is opened on one side of the mounting bracket (201). An installation strip (204) is fixedly installed on one side of the scraper body (202). The installation strip (204) is inserted into the installation slot (203). Two sets of support brackets (205) are symmetrically installed on the upper and lower sides of the rotating plate (109). Two rubber scrapers (206) are hinged between the two support brackets (205) on each side. A torsion spring (207) is provided at the connection between the rubber scraper (206) and the support bracket (205). The torsion spring (207) is in a stretched state. The rotating plate (109) is slidably connected to both sides of the two mounting brackets (201) inside. Two sets of movable plates (210) are fixedly installed at the ends of the two sets of positioning rods (211) away from the mounting brackets (201). A telescopic spring (212) is sleeved on the outer side of the two sets of positioning rods (211). The two ends of the telescopic spring (212) are fixedly connected to the rotating plate (109) and the movable plate (210) respectively. Positioning grooves (213) are symmetrically opened on both sides of the two mounting brackets (201). The positioning rods (211) are inserted into the positioning grooves (213). A ball bearing (214) is hinged at the end of the positioning rod (211) away from the movable plate (210).

2. The ink doctor blade device for a screen printing machine according to claim 1, characterized in that: A rotating shaft (105) is rotatably connected to the lower side of each of the two fixed plates (104) that are close to each other, and a rotating frame (106) is fixedly installed at the lower side of each of the two rotating shafts (105) that are close to each other. An adjusting plate (107) is fixedly installed at the lower side of each of the two adjusting plates (107). A rotating rod (108) is rotatably connected to the lower side of each of the two adjusting plates (107), and the lower side of each of the two rotating rods (108) that are close to each other is fixedly connected to a rotating plate (109). A connecting groove (110) is symmetrically opened inside the rotating plate (109).

3. The ink doctor blade device for a screen printing machine according to claim 2, characterized in that: One side of each of the two sets of rubber scrapers (206) abuts against the two scraper bodies (202), and a temporary storage box (208) is fixedly installed on one side of the rubber scraper (206). Two sets of sliding grooves (209) are symmetrically opened on one side of the two connecting grooves (110) inside the rotating plate (109). At the same time, a limit rod (2091) is slidably connected inside the sliding groove (209), and the two sets of limit rods (2091) are fixedly connected to the two mounting brackets (201) respectively.

4. The ink doctor blade device for a screen printing machine according to claim 2, characterized in that: The movable plate (210) is symmetrically equipped with movable seats (215) on both sides of the two positioning rods (211), and the rotating plate (109) is fixedly equipped with limit frames (217) on one side of the two movable seats (215). The limit frame (217) is slidably connected to the inside of the limit frame (217), and a U-shaped frame (219) is fixedly installed at one end of the connecting plate (218). A column rod (220) is fixedly installed on the inner side of the U-shaped frame (219), and a movable groove (216) is opened through one side of the movable seat (215). The column rod (220) is slidably connected to the movable groove (216).

5. An ink doctor blade device for a screen printing machine according to claim 4, characterized in that: An L-shaped frame (221) is fixedly installed on one side of the U-shaped frame (219), and a fixed seat (222) is fixedly installed on the end of the L-shaped frame (221) away from the U-shaped frame (219). A roller (223) is rotatably connected inside the fixed seat (222). At the same time, mounting seats (224) are symmetrically installed above the two adjusting plates (107) on their adjacent sides, and the two rollers (223) above abut against the mounting seats (224).

6. The ink doctor blade device for a screen printing machine according to claim 1, characterized in that: The positioning component (3) includes two sets of mounting blocks (301) symmetrically installed on both sides of the mounting frame (201), and a baffle (302) is rotatably connected between the two mounting blocks (301). A positioning plate (303) is fixedly installed on the side of the baffle (302) near the scraper body (202), and one side of the positioning plate (303) abuts against the scraper body (202). The mounting frame (201) is fixedly installed with positioning seats (304) on both sides of the two baffles (302), and positioning bolts (305) are symmetrically inserted on both sides of the positioning seats (304). Threaded holes (306) are symmetrically opened on both sides of the baffle (302), and the positioning bolts (305) are threadedly connected to the threaded holes (306).

7. An ink doctor blade device for a screen printing machine according to claim 2, characterized in that: The adjustment assembly (4) includes a drive motor (401) fixedly installed below one side of the left adjustment plate (107), and the output end of the drive motor (401) passes through the adjustment plate (107) and is fixedly connected to a rotating rod (108) on one side. One end of the left rotating shaft (105) passes through the fixed plate (104) and is fixedly installed with a worm gear (402). Meanwhile, a support block (403) is symmetrically installed on one side of the left fixed plate (104) above the worm gear (402). A worm (404) is rotatably connected between the two support blocks (403), and the worm (404) is meshed with the worm gear (402).

8. An ink doctor blade device for a screen printing machine according to claim 7, characterized in that: A hydraulic push rod (406) is fixedly installed on the front of the fixed plate (104) on the left side, and a push plate (407) is fixedly installed on the movable end of the hydraulic push rod (406). One end of the worm gear (404) passes through a side support block (403) and is fixedly installed with a rotating gear (405). Meanwhile, a toothed plate (408) is fixedly installed on one side of the push plate (407), and the rotating gear (405) meshes with the toothed plate (408). A guide rod (409) is fixedly installed at the bottom of the push plate (407), and a guide frame (410) slides on the outer side of the guide rod (409). Meanwhile, the guide frame (410) is fixedly connected to the fixed plate (104).

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