A flat screen printing machine and a fabric printing process using the same

Abstract

The application relates to a flat screen printing machine and a cloth printing process using the same, which comprises a rack and a printing flat screen. The printing flat screen comprises a screen frame and a printing screen. The printing screen is connected to the inner wall of the screen frame. The screen frame is connected to the rack through a lifting piece. A scraper is slidably connected to the screen frame. The bottom of the scraper is in contact with the top surface of the printing screen. The inner walls of the two ends of the screen frame along the sliding direction of the scraper are provided with a foreign matter discharging hole. The length direction of the foreign matter discharging hole is consistent with the length direction of the scraper. The screen frame is provided with an inner cavity. The foreign matter discharging hole is communicated with the inner cavity. The length direction of the inner cavity is consistent with the length direction of the scraper. A push plate is slidably arranged in the inner cavity along the length direction. One end of the push plate extends into the foreign matter discharging hole and is flush with the opening of the side of the foreign matter discharging hole close to the scraper. The application has the effect of reducing the color block impurities on the scraper and improving the printing quality.

Description

Technical Field

[0001] This application relates to the field of printing equipment, and more particularly to a flatbed printing machine and a fabric printing process using the flatbed printing machine. Background Technology

[0002] Currently, printing machines are mainly divided into rotary screen printing machines, flat screen printing machines, and digital printing machines. Digital printing machines are more complicated to operate. Therefore, rotary screen printing machines and flat screen printing machines are more widely used in production and daily life.

[0003] Flatbed printing machines are important production equipment in the textile printing and dyeing industry. When using a flatbed printing machine, the fabric is first adhered to a predetermined position on the guide belt using white adhesive. After the fabric on the guide belt is transported to the position aligned with the printing flatbed screen and stops, the screen frame is pressed down firmly against the fabric. The squeegee moves on the flatbed screen, thus printing the ink placed inside the screen onto the fabric through the perforated pattern.

[0004] When the squeegee moves across the flat screen, some dye is printed onto the fabric through the openwork pattern, while some dye is pushed to both ends of the screen. The dye pushed to both ends of the screen tends to stick to the inner wall of the screen frame, forming color clumps and impurities. When the squeegee moves, these color clumps and impurities tend to stick to the squeegee, thus affecting the printing quality. Summary of the Invention

[0005] In order to reduce color block impurities on the squeegee and improve printing quality, this application provides a flatbed printing machine and a fabric printing process using the flatbed printing machine.

[0006] In the first aspect, the flatbed screen printing machine provided in this application adopts the following technical solution:

[0007] A flatbed printing machine includes a frame and a printing flatbed screen. The printing flatbed screen includes a frame and a printing screen. The printing screen is connected to the inner wall of the frame. The frame is connected to the frame via a lifting device. A slidable squeegee is attached to the frame. The bottom of the squeegee contacts the top surface of the printing screen. Impurity removal holes are provided on both ends of the inner wall of the frame along the sliding direction of the squeegee. The length direction of the impurity removal holes is consistent with the length direction of the squeegee. The frame has an inner cavity. The impurity removal holes communicate with the inner cavity. The length direction of the inner cavity is consistent with the length direction of the squeegee. A push plate is slidably disposed in the inner cavity along its length direction. One end of the push plate extends into the impurity removal holes and is flush with the opening of the impurity removal holes near the squeegee.

[0008] By adopting the above technical solution, when the squeegee moves back and forth on the printing screen to print the dye onto the fabric, after the squeegee moves to one side and contacts the inner wall of the screen frame, the push plate slides along the length of the inner cavity and scrapes off the color block impurities on the side of the squeegee that contacts the inner wall of the screen frame. The color block impurities enter the inner cavity through the impurity discharge hole and are collected, thereby reducing the color block impurities on the squeegee and improving the printing quality.

[0009] Preferably, the top of the scraper is provided with a dye solution box, the length direction of the dye solution box is consistent with the length direction of the scraper, the bottom of the dye solution box is provided with a pulp outlet hole, the length direction of the pulp outlet hole is consistent with the length direction of the dye solution box, the scraper is located directly below the pulp outlet hole and the width of the pulp outlet hole is greater than the width of the scraper, and the top of both ends of the scraper along the length direction are connected to the bottom of the dye solution box.

[0010] By adopting the above technical solution, the dye liquor can be placed in a dye liquor box, and the dye liquor is output from the dye liquor box through the dispensing hole. The dye liquor can be output to both sides of the squeegee, and the squeegee moves along with the dye liquor box. The dye liquor can be distributed on the printing screen along the direction of the squeegee's movement. That is, while the squeegee is scraping, the dye liquor box is outputting the dye liquor, which can minimize the accumulation of dye liquor on the printing screen. The dye liquor can be scraped onto the printing screen by a single squeegee moving back and forth, thus completing the printing process on the fabric with a single squeegee.

[0011] Preferably, one end of the dye solution box is connected to a dye solution source, and a pusher is provided inside the dye solution box to push the dye solution in the dye solution box to the slurry outlet.

[0012] By adopting the above technical solution, the dye liquor source can transport the dye liquor into the dye liquor box, and the pusher can push the dye liquor to the pulp outlet, which can speed up the output speed of the dye liquor box.

[0013] Preferably, the pushing component is an airbag, the length direction of the airbag is consistent with the length direction of the dye box, the top of the airbag is connected to the top of the dye box, and the airbag is connected to an air pump, which is used to inflate and de-inflate the airbag.

[0014] By adopting the above technical solution, the air pump inflates the airbag, the airbag expands inside the dye box, the airbag volume increases, the airbag can squeeze the dye to the discharge hole, thereby pushing the dye to the discharge hole, the air pump draws air from the airbag, the airbag volume decreases, and the dye source replenishes the dye box with dye.

[0015] Preferably, the pushing component is a long plate, the length direction of the long plate is consistent with the length direction of the dye box, a first cylinder is connected to the top of the long plate, the piston rod of the first cylinder is vertically arranged and connected to the long plate, and the long plate slides and connects to the inner wall of the dye box in the vertical direction.

[0016] By adopting the above technical solution, the first cylinder pushes the long plate, the long plate moves close to the pulp outlet and pushes the dye liquor to the pulp outlet. When the long plate moves to the bottom of the dye liquor box, the dye liquor in the dye liquor box can be discharged. When the first cylinder pulls the long plate to the top of the dye liquor box, the dye liquor source replenishes the dye liquor in the dye liquor box.

[0017] Preferably, the dye box has an opening at the end away from the dye source, the opening being higher than the connection point between the dye source and the dye box, the dye source being connected to a recovery pipe through the opening, and the recovery pipe being connected to a recovery box.

[0018] By adopting the above technical solution, when the long plate moves from the bottom to the top of the dye solution box, it can drive the dye solution above the long plate to move. The long plate can squeeze the dye solution above the long plate into the opening and collect it in the recycling box through the recycling pipe, so that the long plate can move and reset to the top of the dye solution box.

[0019] Preferably, the dye box includes a box body and a cover body, the box body has an opening at the top, the cover body is placed on the top of the box body and is detachably connected to the box body, the box body is provided with a filter membrane, and the filter membrane is placed on the pulp outlet hole.

[0020] By adopting the above technical solution, the dye liquor in the dye liquor box is filtered through the filter membrane and then output from the pulp outlet. The filter membrane can filter out impurities in the dye liquor. After the cover is removed from the box, the staff can replace or clean the filter membrane, which can minimize the risk of filter membrane blockage.

[0021] Preferably, a negative pressure source is connected to the inner wall of the mesh frame, and the negative pressure source is connected to one end of the inner cavity. The negative pressure source is used to remove impurities from the inner cavity.

[0022] By adopting the above technical solution, the push plate can scrape off the color block impurities on the scraper when it moves. After the color block impurities enter the inner cavity, they can be removed by the negative pressure source, which can reduce the color block impurities in the inner cavity and avoid the accumulation of color block impurities in the inner cavity as much as possible.

[0023] Preferably, both ends of the printing mesh along the sliding direction of the squeegee are connected to arc-shaped plates. The length direction of the arc-shaped plates is consistent with the length direction of the squeegee. One end of the arc-shaped plate is connected to the printing mesh, and the other end of the arc-shaped plate is connected to the inner wall of the mesh frame and located at the bottom edge of the opening of the impurity discharge hole near the squeegee. The concave arc side of the arc-shaped plate faces the top of the frame.

[0024] The scraper includes a guide plate, a spring, and a scraper blade. The length directions of the guide plate and the scraper blade are both aligned with the length direction of the impurity discharge hole. A guide groove is formed at the bottom of the guide plate, and the length direction of the guide groove is aligned with the length direction of the guide plate. The spring is located within the guide groove, the top of the scraper blade is located within the guide groove, and the bottom of the scraper blade contacts the top surface of the printing screen. One end of the spring is connected to the bottom wall of the guide groove, and the other end of the spring is connected to the end of the scraper blade located within the guide groove.

[0025] By adopting the above technical solution, after the dye liquor is transported to the printing screen, the arc plate can prevent the dye liquor on the printing screen from flowing into the impurity discharge hole and thus causing dye liquor waste. When the squeegee moves on the printing screen, the spring presses the lower end of the squeegee against the printing screen. When the squeegee moves to the arc plate, one end of the squeegee moves into the guide groove, and the spring presses the lower end of the squeegee against the concave side of the arc plate. When the squeegee moves to the opening of the impurity discharge hole, the push plate can scrape off the color block impurities adhering to the squeegee, which can reduce the color block impurities on the squeegee and improve the printing quality.

[0026] Secondly, the fabric printing process provided in this application adopts the following technical solution:

[0027] A fabric printing process includes the following steps:

[0028] S1. Singeing: Singeing off excess fuzz from the fabric using a singeing machine;

[0029] S2. Bleaching: Bleaching the fabric to remove pigments;

[0030] S3, Printing: The fabric is printed using one of the flatbed printing machines described above;

[0031] S4. Steaming: The printed fabric is fed into a steaming machine for steaming.

[0032] S5. Soap washing: Soap washing is performed on the fabric after steaming.

[0033] S6. Drying: After the fabric has been soaped, it is dried.

[0034] By adopting the above technical solutions, the fabric can be singed to reduce surface fuzz, the fabric can be bleached to remove the pigments, the bleached fabric can be printed to improve the printing quality, the printed fabric can be steamed to allow the dye to diffuse into the fabric fibers and be fixed on the fibers, and the fabric can be processed after soaping and drying.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. When the squeegee moves back and forth on the printing screen to print the dye onto the fabric, after the squeegee moves to one side and contacts the inner wall of the screen frame, the push plate slides along the length of the inner cavity and scrapes off the color block impurities on the side of the squeegee that contacts the inner wall of the screen frame. The color block impurities enter the inner cavity through the impurity discharge hole and are collected, thereby reducing the color block impurities on the squeegee and improving the printing quality.

[0037] 2. The dye solution can be stored in a dye solution box. The dye solution is output from the dye solution box through the dispensing hole. The dye solution can be output to both sides of the squeegee. When the squeegee moves, it drives the dye solution box to move together. The dye solution can be distributed on the printing screen along the direction of the squeegee's movement. That is, while the squeegee is scraping, the dye solution box is outputting the dye solution. This can minimize the accumulation of dye solution on the printing screen. The dye solution can be scraped onto the printing screen by a squeegee moving back and forth. In this way, the printing process of the fabric can be completed with a single squeegee.

[0038] 3. After the dye liquor is delivered to the printing screen, the arc plate can prevent the dye liquor on the printing screen from flowing into the impurity discharge hole, thus preventing dye liquor waste. When the squeegee moves on the printing screen, the spring presses the lower end of the squeegee against the printing screen. When the squeegee moves to the arc plate, one end of the squeegee moves into the guide groove, and the spring presses the lower end of the squeegee against the concave side of the arc plate. When the squeegee moves to the opening of the impurity discharge hole, the push plate can scrape off the color block impurities adhering to the squeegee, which can reduce the color block impurities on the squeegee and improve the printing quality. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0040] Figure 2 This is a partial structural schematic diagram of Embodiment 1 of this application.

[0041] Figure 3 This is a cross-sectional view of a portion of the structure of Embodiment 1 of this application, used to illustrate the pusher.

[0042] Figure 4 This is a partial cross-sectional view of the overall structure of Embodiment 1 of this application, used to show the dye box.

[0043] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0044] Figure 6 This is a partial structural schematic diagram of Embodiment 2 of this application.

[0045] Figure 7 This is a cross-sectional view of a portion of the structure of Embodiment 2 of this application, used to illustrate the pusher.

[0046] Explanation of reference numerals in the attached figures:

[0047] 100. Frame; 101. Lifting component;

[0048] 200. Printing flat screen; 201. Screen frame; 202. Printing screen; 203. Impurity removal hole; 204. Inner cavity; 205. Push plate; 206. Curved plate;

[0049] 300. Scraper; 301. Guide plate; 302. Spring; 303. Scraper blade; 304. Guide groove;

[0050] 400. Dye liquor box; 401. Box body; 402. Lid; 403. Slurry outlet; 404. Recovery pipe; 405. Recovery box; 406. Filter membrane;

[0051] 500. Dye source;

[0052] 600. Pushing component; 601. Air pump; 602. First cylinder;

[0053] 700. Negative pressure source. Detailed Implementation

[0054] The present application will be further described in detail below with reference to all the accompanying drawings.

[0055] This application discloses a flatbed screen printing machine.

[0056] Example 1:

[0057] Reference Figure 1 and Figure 2 The flatbed printing machine includes a frame 100, a printing flatbed 200, and a conveyor belt. The conveyor belt is mounted on the frame 100. The printing flatbed 200 is connected to the top of the frame 100 via a lifting component 101 and is located above the conveyor belt. The lifting component 101 is a cylinder, which is connected to the frame 100 and the piston rod of the cylinder is connected to the printing flatbed 200. The conveyor belt is used to transport the fabric, the cylinder is used to lift the printing flatbed 200, and the printing flatbed 200 is used to print on the fabric.

[0058] Reference Figure 2 and Figure 3 The printing flat screen 200 is horizontally positioned and includes a frame 201 and a printing screen 202. The frame 201 is rectangular and its length direction is consistent with the fabric conveying direction. All four sides of the frame 201 are rectangular strips. The printing screen 202 is rectangular and its four sides are connected to the inner wall of the frame 201. A squeegee 300 is provided at the top of the printing screen 202. The bottom of the squeegee 300 contacts the printing screen 202 and slides along the length of the printing screen 202.

[0059] The squeegee 300 includes a guide plate 301 and a squeegee 303. The length directions of the guide plate 301 and the squeegee 303 are consistent with the width direction of the printing screen 202. The two inner walls of the screen frame 201 along the width direction are provided with sliding grooves. The length direction of the sliding grooves is consistent with the length direction of the screen frame 201. A lead screw is provided in one of the sliding grooves. The lead screw passes through the screen frame 201 and is connected to a motor. The two ends of the guide plate 301 are located in the two sliding grooves respectively, and one end of the guide plate 301 is threaded onto the lead screw. The motor drives the lead screw to rotate, and the lead screw drives the guide plate 301 to move along the length direction of the printing screen 202.

[0060] A guide groove 304 is provided at the bottom of the guide plate 301. The depth direction of the guide groove 304 is set vertically. The top end of the scraper 303 is located in the guide groove 304, and the bottom end of the scraper 303 is in contact with the printing screen 202. Multiple springs 302 are provided in the guide groove 304. One end of the spring 302 is connected to the bottom wall of the guide groove 304, and the other end of the spring 302 is connected to the top end of the scraper 303. The springs 302 can press the scraper 303 against the printing screen 202.

[0061] A dye solution box 400 for holding dye solution is connected to the top of the guide plate 301. The dye solution box 400 is rectangular and its length is consistent with the length direction of the guide plate 301. The dye solution box 400 includes a box body 401 and a cover 402. The top of the box body 401 is open, and the cover 402 is placed over the top opening of the box body 401. The cover 402 is detachably connected to the box body 401 by screws.

[0062] Reference Figure 1 and Figure 4 The box body 401 has a dye source 500 and a recovery pipe 404 connected to its two ends along its length. The dye source 500 includes a dye tank and a pipe. The dye tank is connected to one end of the pipe via a delivery pump, and the other end of the pipe is connected to the box body 401. The dye tank can deliver dye into the box body 401 via the delivery pump and the pipe. The connection point between the pipe and the box body 401 is located at the center of the end of the box body 401. One end of the recovery pipe 404 is connected to the box body 401, and the other end of the recovery pipe 404 is connected to a recovery box 405. The connection point between the recovery pipe 404 and the box body 401 is higher than the connection point between the pipe and the box body 401.

[0063] Reference Figure 3 and Figure 4The bottom of the box body 401 has a paste outlet 403, which is elongated and its length is aligned with the width of the printing mesh 202. A guide plate 301 is connected to the bottom of the box body 401 and is located directly below the paste outlet 403. The width of the paste outlet 403 is greater than the thickness of the top of the guide plate 301. The dye liquor output from the paste outlet 403 can flow to both sides of the guide plate 301. A filter membrane 406 is connected to the bottom of the box body 401. The filter membrane 406 is a pressure filter membrane, which covers the paste outlet 403. The dye liquor enters the paste outlet 403 after being filtered through the filter membrane 406. The dye liquor can only pass through the pressure filter membrane under pressure.

[0064] A pusher 600 is provided inside the dye liquor box 400. In this embodiment, the pusher 600 is an airbag, which is connected to an air pump 601, which is connected to the top of the cover 402. The air pump 601 inflates and deflates the airbag. The airbag is cylindrical and its length is consistent with the length of the dye liquor box 400. The top of the airbag is connected to the top of the cover 402. When the air pump 601 inflates the airbag, the airbag expands, which can push the dye liquor to the filter membrane 406. The dye liquor can then pass through the filter membrane 406 and enter the pulp outlet 403.

[0065] Reference Figure 2 and Figure 3The printing screen 202 has arc-shaped plates 206 connected to both ends along its length. The length of the arc-shaped plates 206 is consistent with the width of the printing screen 202. One end of the arc-shaped plates 206 is connected to the printing screen 202, and the other end is connected to the inner wall of the screen frame 201. The concave side of the arc-shaped plates 206 faces the top of the frame 100. The screen frame 201 has inner cavities 204 at both ends along its length. The length of the inner cavities 204 is consistent with the width of the screen frame 201. The inner walls at both ends of the screen frame 201 have drainage holes 203, which communicate with the inner cavities 204 and are aligned in the same length direction. The end of the arc-shaped plate 206 connected to the inner wall of the screen frame 201 is located at the bottom edge of the opening of the drainage hole 203 near the scraper 300. A push plate 205 is slidably disposed in the inner cavity 204. The push plate 205 moves in the inner cavity 204 via a lead screw. The length direction of the lead screw is consistent with the length direction of the inner cavity 204, and one end of the lead screw passes through the mesh frame 201 and is connected to a motor. The push plate 205 is threaded onto the lead screw. The motor drives the lead screw to rotate, and the lead screw drives the push plate 205 to slide and connect with the side wall of the inner cavity 204. The push plate 205 extends into the impurity discharge hole 203 at one end and is flush with the opening of the impurity discharge hole 203 on the side near the scraper 300. The inner wall of the mesh frame 201 with the impurity discharge hole 203 has a top thickness that is less than the bottom thickness. When the scraper 300 moves to contact the inner wall of the mesh frame 201, one side of the guide plate 301 contacts the side wall of the mesh frame 201 with the smaller thickness, and one side of the scraper 303 contacts the end of the push plate 205 that extends into the impurity discharge hole 203. When the push plate 205 moves in the inner cavity 204, the push plate 205 can scrape off the color block impurities adhering to one side of the scraper 303.

[0066] The inner cavity 204 is connected to a negative pressure source 700, which uses a vacuum pump. After the push plate 205 scrapes off the impurities on the scraper 303, the impurities enter the inner cavity 204, and the impurities in the inner cavity 204 are removed by the vacuum pump.

[0067] The implementation principle of Example 1 is as follows: Dye liquor source 500 delivers dye liquor to dye liquor box 400. Air pump 601 inflates airbag, airbag squeezes dye liquor, and dye liquor passes through filter membrane 406. Dye liquor is delivered to both sides of doctor blade 300 through paste outlet hole 403. Doctor blade 300 moves on printing screen 202 to print on fabric. Color block impurities easily adhere to both sides of doctor blade 303. When doctor blade 303 moves to the side of impurity discharge hole 203, push plate 205 can scrape off color block impurities on the side wall of doctor blade 303. Color block impurities enter inner cavity 204 and are sucked away by negative pressure source 700, thereby reducing color block impurities on doctor blade 303 and improving printing quality.

[0068] Example 2: The difference between it and Example 1 is that the pusher 600 is different.

[0069] Reference Figure 5 , Figure 6 andFigure 7 The flatbed printing machine includes a pusher 600, which is a long plate. The length of the long plate is consistent with the length of the box 401. A first cylinder 602 is connected to the top of the cover 402. The piston rod of the first cylinder 602 is vertically set and passes through the cover 402 and is connected to the top of the long plate. The first cylinder 602 drives the long plate to slide and connect with the inner wall of the box 401 in a vertical direction. The long plate can thus push the dye liquor to be conveyed to the ink outlet 403.

[0070] The implementation principle of Example 2 is as follows: the dye source 500 delivers the dye to the dye box 400, the first cylinder 602 pushes the long plate, the long plate pushes the dye from the top of the box 401 to the bottom of the box 401, the dye passes through the filter membrane 406 and is then output from the dye box 400 through the pulp outlet 403.

[0071] This application also discloses a fabric printing process, including the following steps:

[0072] S1. Singeing: Singeing off excess fuzz from the fabric using a singeing machine;

[0073] S2. Bleaching: Bleaching the fabric to remove pigments;

[0074] S3, Printing: The fabric is printed using one of the flatbed printing machines described above;

[0075] S4. Steaming: The printed fabric is fed into a steaming machine for steaming.

[0076] S5. Soap washing: Soap washing is performed on the fabric after steaming.

[0077] S6. Drying: After the fabric has been soaped, it is dried.

[0078] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flatbed printing machine, comprising a frame (100) and a printing flatbed (200), wherein the printing flatbed (200) comprises a frame (201) and a printing screen (202), the printing screen (202) being connected to the inner wall of the frame (201), and the frame (201) being connected to the frame (100) via a lifting member (101), characterized in that: The frame (201) is slidably connected to a scraper (300). The bottom of the scraper (300) is in contact with the top surface of the printing screen (202). The inner walls of both ends of the frame (201) along the sliding direction of the scraper (300) are provided with impurity discharge holes (203). The length direction of the impurity discharge holes (203) is consistent with the length direction of the scraper (300). The frame (201) is provided with an inner cavity (204). The impurity discharge holes (203) are connected to the inner cavity (204). The length direction of the inner cavity (204) is consistent with the length direction of the scraper (300). A push plate (205) is slidably disposed in the inner cavity (204) along the length direction. One end of the push plate (205) extends into the impurity discharge hole (203) and is flush with the opening of the impurity discharge hole (203) near the scraper (300). The top of the scraper (300) is provided with a dye liquor box (400), the length direction of the dye liquor box (400) is consistent with the length direction of the scraper (300), the bottom of the dye liquor box (400) is provided with a pulp outlet hole (403), the length direction of the pulp outlet hole (403) is consistent with the length direction of the dye liquor box (400), the scraper (300) is located directly below the pulp outlet hole (403) and the width of the pulp outlet hole (403) is greater than the width of the scraper (300), and the top of both ends of the scraper (300) along the length direction are connected to the bottom of the dye liquor box (400); One end of the dyeing solution box (400) is connected to a dyeing solution source (500). A pusher (600) is provided inside the dyeing solution box (400). The pusher (600) is used to push the dyeing solution in the dyeing solution box (400) to the pulp outlet (403). Both ends of the printing screen (202) along the sliding direction of the squeegee (300) are connected to arc plates (206). The length direction of the arc plate (206) is consistent with the length direction of the squeegee (300). One end of the arc plate (206) is connected to the printing screen (202), and the other end of the arc plate (206) is connected to the inner wall of the screen frame (201) and located at the bottom edge of the opening of the waste discharge hole (203) near the squeegee (300). The concave arc side of the arc plate (206) is set towards the top of the frame (100). The scraper (300) includes a guide plate (301), a spring (302), and a scraper (303). The length directions of the guide plate (301) and the scraper (303) are both consistent with the length direction of the impurity discharge hole (203). A guide groove (304) is provided at the bottom of the guide plate (301). The length direction of the guide groove (304) is consistent with the length direction of the guide plate (301). The spring (302) is located in the guide groove (304). The top of the scraper (303) is located in the guide groove (304). The bottom end of the scraper (303) is in contact with the top surface of the printing screen (202). One end of the spring (302) is connected to the bottom wall of the guide groove (304), and the other end of the spring (302) is connected to the end of the scraper (303) located in the guide groove (304).

2. The flatbed screen printing machine according to claim 1, characterized in that: The pusher (600) is an airbag, the length direction of which is consistent with the length direction of the dye box (400), the top of the airbag is connected to the top of the dye box (400), and the airbag is connected to an air pump (601), which is used to inflate and de-inflate the airbag.

3. The flatbed screen printing machine according to claim 1, characterized in that: The pusher (600) is a long plate, the length direction of which is consistent with the length direction of the dye box (400). A first cylinder (602) is connected to the top of the long plate. The piston rod of the first cylinder (602) is vertically arranged and connected to the long plate. The long plate slides and connects to the inner wall of the dye box (400) in the vertical direction.

4. The flatbed screen printing machine according to claim 3, characterized in that: The dye box (400) has an opening at one end away from the dye source (500). The opening is higher than the connection between the dye source (500) and the dye box (400). The dye source (500) is connected to a recycling pipe (404) through the opening. The recycling pipe (404) is connected to a recycling box (405).

5. The flatbed screen printing machine according to claim 4, characterized in that: The dye box (400) includes a box body (401) and a cover (402). The box body (401) has an opening at the top. The cover (402) is placed on the top of the box body (401) and is detachably connected to the box body (401). A filter membrane (406) is provided inside the box body (401), and the filter membrane (406) covers the pulp outlet (403).

6. The flatbed screen printing machine according to claim 1, characterized in that: The inner wall of the mesh frame (201) is connected to a negative pressure source (700), which is connected to one end of the inner cavity (204). The negative pressure source (700) is used to remove impurities from the inner cavity (204).

7. A fabric printing process, characterized in that: The process includes the following steps: S1. Singeing: Singeing off excess fuzz from the fabric using a singeing machine; S2. Bleaching: Bleaching the fabric to remove pigments; S3. Printing: Printing the fabric using a flatbed printing machine as described in any one of claims 1-6; S4. Steaming: The printed fabric is fed into a steaming machine for steaming. S5. Soap washing: Soap washing is performed on the fabric after steaming. S6. Drying: After the fabric has been soaped, it is dried.

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