Flat screen printing machine fully utilizing color paste

Abstract

The utility model relates to a flat screen printing machine fully utilizing color paste, which comprises a rack, a transportation assembly and a printing mechanism, the printing mechanism comprises a flat screen frame and a scraping printing assembly, the scraping printing assembly is used for scraping the color paste on a flat screen plate, the scraping printing assembly comprises a scraper group and a moving component, and the scraper group comprises a first scraper and a second scraper. And a storage cavity for storing residual slurry is formed between the first scraper and the second scraper. In the using process, a fabric is conveyed to the position below the printing mechanism, the scraper set is driven by the moving component to reciprocate in the direction perpendicular to the conveying direction of the conveying assembly, after color paste is evenly smeared to the flat screen frame, the flat screen frame moves in the vertical direction and gets close to the fabric, and after the fabric is printed, the printing efficiency is improved. The color paste on the flat screen frame is scraped away and pushed to the storage cavity to be stored, the situation that residual paste cannot be fully utilized due to the fact that the color paste is pushed away from the operation range of the scraper set is reduced, the probability that printing colors on fabric are not uniform is reduced, and the printing quality is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of printing processing, and in particular to a flat screen printing machine that fully utilizes color paste. Background Art

[0002] Blended fabrics have excellent properties such as good elasticity, wear resistance, and low shrinkage, so they are widely used. In the production process of blended fabrics, dyeing, printing and other processes are usually required to improve the appearance of the fabric. In the printing process, a flat screen printing machine is usually used to print the blended fabric. During the use of the flat screen printing machine, the color paste on the flat screen is usually scraped onto the fabric by a scraper for printing and dyeing.

[0003] The scraper frame of the existing flat screen printing machine is equipped with a lifting device, which uses a servo motor as a driving force to lift the scraper frame, and then passes through a complex transmission structure to achieve the lifting of the scraper frame. Therefore, the lifting device has a complex structure and the equipment manufacturing cost is high.

[0004] In the prior art, a Chinese patent with announcement number CN103332002A discloses a lifting device for a scraper frame of a flat screen printing machine, including a left scraper box and a right scraper box of the flat screen printing machine, two ends of a square tube are respectively fixed to the left scraper box and the right scraper box, the left scraper box, the right scraper box and the square tube are fixed on the frame of the flat screen printing machine, a scraper device is installed on the scraper frame, there are two cylinders, and the cylinder seats of each cylinder are respectively hinged on the two sides of the scraper frame, a crankshaft rocker arm is hinged on the piston rod of one cylinder, and the other end of the crankshaft rocker wall is hinged on the left scraper box, and a crankshaft rocker arm is hinged on the piston rod of the other cylinder, and the other end of the crankshaft rocker wall is hinged on the right scraper box, and the middle part of the crankshaft rocker wall is hinged on the scraper frame, and an intake throttle valve is installed on the air intake nozzle of the cylinder.

[0005] During use, it is driven by a cylinder and equipped with a simple lifting structure to achieve the purpose of lifting the scraper frame. At the same time, the equipment has low manufacturing cost, accurate operation and adjustable lifting speed.

[0006] With regard to the above-mentioned related technologies, during use, in order to prevent color from splashing, when the scraper moves back and forth, the frame is divided into a scraping area and residual slurry areas on both sides of the scraping area. The color slurry on the frame will reciprocate in the scraping area with the scraper. Due to inertia, part of the color slurry is pushed away to the residual slurry area by the scraper, which reduces the color slurry in the scraping area, easily resulting in uneven printing color, affecting the printing quality. Utility Model Content

[0007] In order to make full use of the color paste during the printing process and reduce the unevenness of the printing color,

[0008] The present application provides a flat screen printing machine that fully utilizes color paste and adopts the following technical solution:

[0009] A flat screen printing machine that fully utilizes color paste, comprising a frame, a transport component for transmitting fabrics, and a printing mechanism installed on the frame and arranged directly above the transport component, the printing mechanism comprising a flat screen frame horizontally installed on the frame and slidably connected to the frame in a vertical direction, a scraping component installed on the frame and arranged above the flat screen plate, the scraping component being used to scrape the color paste on the flat screen plate, the scraping component comprising a scraper group, and a moving member for driving the scraper group to reciprocate in a direction perpendicular to the transport direction of the transport component, the scraper group comprising a first scraper arranged in the vertical direction, and a second scraper arranged parallel to the first scraper, a storage cavity for storing residual paste is formed between the first scraper and the second scraper, the first scraper is used to scrape the color paste on the flat screen frame from the flat screen frame to the surface of the fabric, and the second scraper is used to evenly apply the color paste in the storage cavity to the flat screen frame.

[0010] By adopting the above technical solution, during use, the transport component transports the fabric to the printing mechanism, and drives the scraper group to reciprocate in a direction perpendicular to the transport direction of the transport component through the moving component. When the scraper group reciprocates on the flat screen frame, the second scraper evenly applies the color paste to the flat screen frame, and then the flat screen frame applied with the color paste moves in the vertical direction and approaches the fabric, and the first scraper scrapes the color paste on the flat screen frame onto the fabric to print the fabric. While the first scraper scrapes the color paste on the flat screen frame, it scrapes off the excess color paste on the flat screen frame and pushes it to the storage chamber between the first scraper and the second scraper for storage. After each printing and dyeing is completed, the remaining paste on the flat screen frame is stored in the storage chamber between the first scraper and the second scraper, so that the scraper group drives the remaining paste to move during the next printing and dyeing, thereby reducing the situation where the color paste is pushed away from the operating range of the scraper group, resulting in the remaining paste cannot be fully utilized, reducing the probability of uneven printing color on the fabric, and ensuring the printing quality.

[0011] Optionally, the transport assembly includes a bracket, a rotating roller group rotatably connected to the bracket, a driving motor installed on the bracket for driving the rotating roller group to rotate, and a conveyor belt rotatably connected to the rotating roller group and driven by the rotating roller group for transmission.

[0012] By adopting the above technical solution, the driving motor drives the rotating roller group to rotate, so that the conveyor belt is driven by the rotating roller group to transmit, driving the fabric on the conveyor belt to move.

[0013] Optionally, the frame includes a mounting plate installed on the bracket, and the printing mechanism also includes a lifting assembly for driving the flat screen frame to move in a vertical direction, and the lifting assembly includes a lifting plate connected to both sides of the flat screen frame, and a moving cylinder installed on the mounting plate and used to drive the lifting plate to move in a vertical direction.

[0014] By adopting the above technical solution, after the color paste is evenly coated on the flat screen frame, the flat screen frame is driven by the moving cylinder to move downward in the vertical direction on the mounting plate and approach the fabric on the conveyor belt. The flat screen frame fits the fabric on the conveyor belt, and the color paste on the flat screen frame is scraped and printed on the fabric by the first scraper. After printing, the flat screen frame is driven by the moving cylinder to move upward in the vertical direction away from the fabric.

[0015] Optionally, the mounting plate is provided with a sliding groove along its length direction, and the lifting plate is slidably connected in the sliding groove along the vertical direction.

[0016] Through the above technical solution, the sliding groove limits the moving direction of the lifting plate and the flat net frame, so that the flat net frame can move stably in the vertical direction.

[0017] Optionally, the movable component includes a slide rail installed on the frame along the width direction of the conveyor belt, a screw rod connected to the slide rail and rotatable along the length direction of the slide rail, a rotating motor installed on the slide rail and used to drive the screw rod to rotate, and a movable slider on the slide rail that slides along the width direction of the conveyor belt, the movable slider is threadedly mounted on the screw rod, and the scraper group is installed on the side of the movable slider close to the flat net frame.

[0018] By adopting the above technical solution, the rotating motor drives the screw to rotate, the movable slider moves along the width direction of the conveyor belt, and the scraper group follows the movable slider to move along the width direction of the conveyor belt and apply color paste or scrape off the color paste on the flat screen frame.

[0019] Optionally, the first scraper is slidably connected to the movable slider along the width direction of the conveyor belt, and the scraping assembly also includes an adjusting component for adjusting the distance between the first scraper and the second scraper.

[0020] By adopting the above technical solution, the distance between the first scraper and the second scraper is adjusted by adjusting the adjustment component to adjust the range of the color paste applied on the flat screen frame. When the width of the printed fabric is large, the distance between the first scraper and the second scraper is reduced by adjusting the component, so that the range of the storage cavity is reduced and the range of the color paste applied on the flat screen frame is increased to adapt to fabrics with a larger width range. When the width of the printed fabric is small, the same as the above principle is used, the distance between the first scraper and the second scraper is increased by adjustment, the range of the storage cavity is increased, and the range of the color paste applied on the flat screen frame is reduced to adapt to fabrics with a smaller width.

[0021] Optionally, the adjusting component includes a threaded rod rotatably connected to the movable slider, a handle installed at one end of the threaded rod and used to rotate the threaded rod, the first scraper is threadedly sleeved on the threaded rod, a movable groove is opened on the movable slider along the width direction of the conveyor belt, and the first scraper is slidably connected in the movable groove along the width direction of the conveyor belt.

[0022] By adopting the above technical solution, the threaded rod is driven to rotate by rotating the handle, so that the first scraper slides in the movable groove along the width direction of the conveyor belt and moves away from or close to the second scraper. By changing the distance between the first scraper and the second scraper, the range of color paste applied on the storage chamber and the flat screen frame is changed. The movable groove limits the movement direction of the first scraper, so that the first scraper can stably move along the width direction of the conveyor belt.

[0023] Optionally, baffles are provided on both sides of the conveyor belt, and the baffles are installed on the frame and used to block the color paste splashing everywhere.

[0024] By adopting the above technical solution, the scraper group reciprocates back and forth along the width direction of the conveyor belt. When running at high speed, a small amount of color paste will inevitably splash out of the flat screen frame. The baffle can effectively block the color paste splashing everywhere and reduce the pollution of the color paste to the surrounding environment.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. There is a storage cavity for storing residual slurry between the first scraper and the second scraper. During use, most of the residual slurry is stored in the storage cavity, which reduces the situation where the color slurry is pushed away from the moving range of the scraper group by the scraper group and cannot be fully utilized, resulting in uneven printing and dyeing;

[0027] 2. By adjusting the distance between the first scraper and the second scraper and the distance between the storage chambers, the size of the color paste applied on the flat screen frame can be changed to adapt to fabrics of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0029] Figure 2 It is a cross-sectional view along the AA line of this embodiment.

[0030] Figure 3 It is a cross-sectional view taken along line BB of this embodiment.

[0031] Figure 4 This embodiment Figure 3 Magnified view of part D.

[0032] Figure 5 This embodiment Figure 2 Magnified view of part C.

[0033] Explanation of the reference numerals: 1. mounting plate; 101. sliding groove; 2. supporting frame; 3. bracket; 4. rotating roller group; 401. first rotating roller; 402. second rotating roller; 5. driving motor; 6. conveyor belt; 7. flat net frame; 8. moving cylinder; 9. lifting plate; 10. scraper group; 1001. first scraper; 10011. limiting block; 1002. second scraper; 11. handle; 12. threaded rod; 13. slide rail; 14. screw rod; 15. rotating motor; 16. moving slider; 1601. moving groove; 1602. limiting groove; 17. baffle. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The present application embodiment discloses a flat screen printing machine that fully utilizes color paste. Figure 1 and Figure 2 The flat screen printing machine that fully utilizes the color paste includes a transport component and a printing mechanism, and the printing mechanism includes a flat screen frame 7, a lifting component, and a scraping component. The transport component includes a bracket 3, a rotating roller group 4 rotatably connected to both ends of the bracket 3, a driving motor 5 installed on the bracket 3 and used to drive the rotating roller group 4 to rotate, and a conveyor belt 6 driven by the rotating roller group 4 for transmission. The rotating roller group 4 includes a first rotating roller 401 and a second rotating roller 402, and the first rotating roller 401 and the second rotating roller 402 are rotatably connected to both ends of the bracket 3 respectively. Baffles 17 are installed on the brackets 3 on both sides of the conveyor belt 6, and the baffles 17 are used to block the splashed color paste.

[0036] During use, the fabric to be printed and dyed is placed on the conveyor belt 6, and the driving motor 5 drives the rotating roller group 4 to rotate, drives the conveyor belt 6 to rotate and transmit, and the fabric moves with the conveyor belt 6. When the fabric moves under the printing mechanism, the scraping and printing component moves back and forth along the width direction of the conveyor belt 6 to evenly apply the color paste on the flat screen frame 7, and then drives the flat screen frame 7 to move in the vertical direction through the lifting component so that the flat screen frame 7 is close to the fabric and prints the fabric.

[0037] Reference Figure 3 and Figure 4The scraping assembly includes a scraper group 10 and a moving member for driving the scraper group 10 to move back and forth along the width direction of the conveyor belt 6. The scraper group 10 includes a first scraper 1001 and a second scraper 1002. The first scraper 1001 and the second scraper 1002 are both arranged in the vertical direction and are parallel to each other. A storage cavity for storing color paste is formed between the first scraper 1001 and the second scraper 1002. The lower end surface of the first scraper 1001 abuts against the flat mesh frame 7, and there is a gap between the lower end surface of the second scraper 1002 and the flat mesh frame 7 for the color paste to pass through. The first scraper 1001 is used to scrape the color paste on the flat mesh frame 7 onto the fabric. The first scraper 1001 is also used to scrape the excess color paste on the flat mesh frame 7 into the storage cavity for storage. The second scraper 1002 is used to evenly apply the color paste in the storage cavity to the flat mesh frame 7. The moving member drives the scraper group 10 to move back and forth at both ends of the flat mesh frame 7.

[0038] Reference Figure 1 and Figure 3 , and also includes a frame, which includes a support frame 2 installed on the brackets 3 on both sides of the conveyor belt 6 in the vertical direction. The moving component includes a slide rail 13 installed on the support frame 2 along the direction of the conveyor belt 6, a screw rod 14 rotatably connected to the slide rail 13, a rotating motor 15 installed at one end of the slide rail 13 and used to drive the screw rod 14 to rotate, and a moving slider 16 slidably connected to the slide rail 13 along the width direction of the conveyor belt 6. The moving slider 16 is threadedly sleeved on the screw rod 14, and the two ends of the slide rail 13 are respectively connected to the two sides of the support frame 2. There are two moving components, which are respectively installed on both sides of the flat net frame 7, and the two ends of the scraper group 10 are respectively connected to the two moving components.

[0039] Reference Figure 4 and Figure 5 , the scraper group 10 is connected to the side of the moving slider 16 close to the flat screen frame 7. The scraping assembly also includes an adjusting member for adjusting the distance between the first scraper 1001 and the second scraper 1002. The first scraper 1001 is slidably connected to the moving slider 16 along the width direction of the conveyor belt 6, and the second scraper 1002 is fixedly connected to the moving slider 16. The moving slider 16 is provided with a moving groove 1601 along the width direction of the conveyor belt 6 on the side close to the flat screen frame 7. The first scraper 1001 is slidably connected to the moving groove 1601 along the width direction of the conveyor belt 6, and the inner walls on both sides of the moving groove 1601 are provided with limiting grooves 1602. The upper end surface of the first scraper 1001 is fixedly connected to a limiting block 10011, and the limiting block 10011 is slidably connected to the limiting groove 1602 along the width direction of the conveyor belt 6. The adjusting component includes a threaded rod 12 rotatably connected to the limiting groove 1602 along the length direction of the conveyor belt 6 , a handle 11 installed on one end of the threaded rod 12 , and a limiting block 10011 threadedly sleeved on the threaded rod 12 .

[0040] Reference Figure 1The frame also includes a mounting plate 1 mounted on the brackets 3 on both sides of the conveyor belt 6. The lifting assembly includes a lifting plate 9 mounted on both sides of the flat net frame 7, and a moving cylinder 8 mounted on the mounting plate 1 and used to drive the lifting plate 9 to move in the vertical direction. A sliding groove 101 is provided on the mounting plate 1 in the vertical direction, and the lifting plate 9 is slidably connected to the sliding plate 9 in the vertical direction, and the lifting plate 9 is L-shaped, one end of the lifting plate 9 is fixedly connected to the flat net frame 7, and the other end is slidably connected to the sliding groove 101 in the vertical direction, and the piston rod of the moving cylinder 8 is arranged downward and connected to the lifting plate 9. Two lifting assemblies are provided, one on each side of the conveyor belt 6.

[0041] During use, the rotating motor 15 drives the screw rod 14 to rotate, drives the moving slider 16 to reciprocate along the width direction of the conveyor belt 6, and the scraper group 10 follows the moving slider 16 to move along the width direction of the conveyor belt 6, and the second scraper 1002 is behind the first scraper 1001, and the second scraper 1002 evenly applies the color paste on the flat screen frame 7 to the flat screen frame 7. The moving cylinder 8 drives the lifting plate 9 to move downward in the sliding groove 101 along the vertical direction, and drives the flat screen frame 7 to move downward in the vertical direction to approach the fabric on the conveyor belt 6. The same as the above principle, drives the moving slider 16 and the scraper group 10 to move in the opposite direction along the above moving direction, so that the first scraper 1001 is located behind the second scraper 1002, and the color paste on the flat screen frame 7 is scraped and printed on the fabric by the first scraper 1001, and the fabric is printed. And while the first scraper 1001 scrapes the color paste on the flat screen frame 7, it scrapes off the excess color paste on the flat screen frame 7 and stores it in the storage chamber. After printing, the lifting plate 9 and the flat screen frame 7 are driven by the moving cylinder 8 to move upward in the vertical direction and away from the conveyor belt 6. The screw rod 14 is driven by the rotating motor 15 to rotate, and the excess color paste during the printing process is stored in the storage chamber, which reduces the color paste being pushed away from the running track of the scraper group 10, resulting in the color paste not being fully utilized and uneven printing color.

[0042] When the width of the printed fabric is different, the distance between the first scraper 1001 and the second scraper 1002 can be adjusted by adjusting the member to change the size of the area on the flat screen frame 7 where the color paste is applied. By turning the handle 11, the threaded rod 12 is driven to rotate, so that the first scraper 1001 is slidably connected to the sliding groove 101 along the length direction of the conveyor belt 6, and the first scraper 1001 is moved closer to or away from the second scraper 1002. By changing the size of the storage cavity, the size of the area on the flat screen frame 7 where the color paste can be applied can be changed to meet the printing needs of fabrics of different widths.

[0043] The implementation principle of the flat screen printing machine that fully utilizes the color paste in the embodiment of the present application is as follows: during use, the fabric is transported to the bottom of the printing mechanism through the transport component, the screw rod 14 is driven to rotate by the rotating motor 15, and the movable slider 16 and the scraper group 10 are driven to reciprocate along the width direction of the conveyor belt 6, and the second scraper 1002 evenly applies the color paste on the flat screen frame 7. The flat screen frame 7 is driven to move downward in the vertical direction by the lifting component, so that the flat screen frame 7 is close to the fabric, the scraper group 10 moves along the width direction of the conveyor belt 6, and the first scraper 1001 scrapes the color paste on the flat screen frame 7 onto the fabric to print the fabric, and then the flat screen frame 7 is driven to move upward in the vertical direction by the lifting component to reset. The scraper group 10 moves along the width direction of the conveyor belt 6, and while the first scraper 1001 scrapes the color paste on the flat screen frame 7, the first scraper 1001 also drives the excess color paste on the flat screen frame 7 to be scraped off and pushed into the storage chamber for storage, so that when the scraper group 10 moves, the color paste moves with the scraper group 10. The color paste is stored in the storage chamber, which reduces the color paste being pushed by the scraper group 10 and away from the moving range of the scraper group 10, so that the color paste is fully utilized, reduces the uneven printing color during the printing process, and effectively improves the printing quality.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flat screen printing machine that fully utilizes color paste, characterized in that: The invention comprises a frame, a transport component for conveying fabrics, and a printing mechanism mounted on the frame and arranged directly above the transport component, wherein the printing mechanism comprises a flat screen frame (7) mounted horizontally on the frame and slidably connected to the frame in a vertical direction, and a scraping and printing component mounted on the frame and arranged above the flat screen plate, wherein the scraping and printing component is used to scrape the color paste on the flat screen plate, and the scraping and printing component comprises a scraper group (10), and a moving component for driving the scraper group (10) to reciprocate in a direction perpendicular to the transport direction of the transport component, wherein the scraper group (10) is moved back and forth in a direction perpendicular to the transport direction of the transport component, and the scraper group (10) is moved back and forth in a direction perpendicular to the transport direction of the transport component. The scraper assembly (10) comprises a first scraper (1001) arranged in a vertical direction, and a second scraper (1002) arranged parallel to the first scraper (1001); a storage cavity for storing residual slurry is formed between the first scraper (1001) and the second scraper (1002); the first scraper (1001) is used to scrape the color slurry on the flat screen frame (7) from the flat screen frame (7) to the surface of the fabric; and the second scraper (1002) is used to evenly apply the color slurry in the storage cavity to the flat screen frame (7).

2. The flat screen printing machine for fully utilizing color paste according to claim 1, characterized in that: The transport assembly comprises a support (3), a rotating roller group (4) rotatably connected to the support (3), a driving motor (5) mounted on the support (3) and used to drive the rotating roller group (4) to rotate, and a conveyor belt (6) rotatably connected to the rotating roller group (4) and driven by the rotating roller group (4) for transmission.

3. The flat screen printing machine for fully utilizing color paste according to claim 2, characterized in that: The frame comprises a mounting plate (1) mounted on a bracket (3); the printing mechanism further comprises a lifting assembly for driving a flat screen frame (7) to move in a vertical direction; the lifting assembly comprises a lifting plate (9) connected to both sides of the flat screen frame (7); and a moving cylinder (8) mounted on the mounting plate (1) and used to drive the lifting plate (9) to move in a vertical direction.

4. The flat screen printing machine for fully utilizing color paste according to claim 3, characterized in that: The mounting plate (1) is provided with a sliding groove (101) along its length direction, and the lifting plate (9) is slidably connected in the sliding groove (101) along the vertical direction.

5. The flat screen printing machine for fully utilizing color paste according to claim 1, characterized in that: The movable member comprises a slide rail (13) mounted on a frame along the width direction of the conveyor belt (6), a screw rod (14) connected to the slide rail (13) and rotatable along the length direction of the slide rail (13), a rotating motor (15) mounted on the slide rail (13) and used to drive the screw rod (14) to rotate, and a movable slider (16) slidingly engaged with the slide rail (13) along the width direction of the conveyor belt (6), the movable slider (16) being threadedly sleeved on the screw rod (14), and the scraper assembly (10) being mounted on a side of the movable slider (16) close to the flat screen frame (7).

6. The flat screen printing machine for fully utilizing color paste according to claim 3, characterized in that: The first scraper (1001) is slidably connected to the movable slider (16) along the width direction of the conveyor belt (6), and the scraping assembly further comprises an adjusting component for adjusting the distance between the first scraper (1001) and the second scraper (1002).

7. The flat screen printing machine for fully utilizing color paste according to claim 6, characterized in that: The adjusting member comprises a threaded rod (12) rotatably connected to a movable slider (16), a handle (11) mounted on one end of the threaded rod (12) and used to rotate the threaded rod (12), the first scraper (1001) being threadedly sleeved on the threaded rod (12), a movable groove (1601) being provided on the movable slider (16) along the width direction of the conveyor belt (6), and the first scraper (1001) being slidably connected in the movable groove (1601) along the width direction of the conveyor belt (6).

8. The flat screen printing machine for fully utilizing color paste according to claim 2, characterized in that: Baffles (17) are provided on both sides of the conveyor belt (6); the baffles (17) are mounted on the frame and are used to block the color paste from splashing everywhere.

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