A printing machine for textile fabrics

Abstract

The present invention relates to the field of textile printing technology, and discloses a textile fabric printing machine, comprising: a round screen cylinder, one end of which is fixedly mounted with a driving device, the driving device can drive the round screen cylinder to rotate continuously, and a scraping device is provided in the middle of the inner cavity of the round screen cylinder. The present application achieves the effect of increasing the flow rate of the color paste, accelerating the penetration of the color paste, preventing the backflow of the color paste, and fully increasing the discharge amount of the color paste by setting an auxiliary slurry passing device, while allowing the color paste to pass through the mesh holes in a concentrated manner, ensuring that the color paste passes evenly and sufficiently, further enhancing the efficiency of the color paste passing, and further improving the effect of the printing quality. By setting an air jet device, the printing quality is enhanced, and the color paste can be quickly dried and formed. At the same time, the residual color paste on the surface of the round screen cylinder is promptly removed and the residual color paste is recycled, thereby improving the cleanliness of the surface of the round screen cylinder and preventing the color paste from clogging the mesh holes.

Description

Technical Field

[0001] The present application relates to the technical field of textile printing, and in particular to a printing machine for textile fabrics. Background Art

[0002] In the production process of existing textile fabrics, it is necessary to print the surface of the fabric. The commonly used printing equipment is a rotary screen printing machine. The rotary screen printing machine is a screen printing machine that uses a continuously rotating seamless cylindrical screen for printing. At present, the most commonly used is the horizontal rotary screen printing machine. The horizontal rotary screen printing machine mainly consists of a cloth feeding device, a rotary screen printing device, an air cushion hot air drying device and a cloth discharging device. Among them, the rotary screen printing device consists of a rubber blanket, a rubber blanket driving roller, a rubber blanket tension roller, a rotary screen, a pressure roller and a lifting device, a cloth pressing roller, a gluing device, a slurry feeding device, a pre-washer, a washing box, a drying device and a blanket guide device. The cloth to be printed is sent to the surface of the rubber blanket through the cloth feeding device, and the cloth is carried by the rubber blanket. The cloth is then continuously moved forward by the driving roller. During the movement, the cloth is printed using the rotary screen. Among them, the printing color paste is continuously poured into the scraper tube inside the rotary screen through the slurry feeding device, and the color paste is evenly applied to the surface of the cloth by the rolling of the scraper and the rotary screen, thereby achieving printing.

[0003] During the use of existing printing machines, the flow of color paste in the rotary screen is mainly driven by the scraper component. Therefore, the color paste in the rotary screen is very likely to not be able to pass through the mesh holes quickly and evenly and be printed on the surface of the fabric. The color paste penetration rate is slow and the color paste distribution is uneven, which will cause the printing on the surface of the fabric to be blurred, with ghosting or lighter printing, thereby reducing the printing quality. Summary of the invention

[0004] The present application proposes a textile fabric printing machine, which has the advantages of accelerating the flow and penetration efficiency of color paste, ensuring uniform distribution of color paste, quickly drying and shaping the printed material, keeping the surface of the rotary screen clean, and fully improving the printing quality and efficiency, and is used to solve the problems of low flow and penetration efficiency of color paste, uneven distribution of color paste, slow drying efficiency of printing, and residual color paste on the surface of the rotary screen.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a textile fabric printing machine, comprising: a round screen cylinder, one end of which is fixedly mounted with a driving device, the driving device can drive the round screen cylinder to rotate continuously, a scraping device is provided in the middle of the inner cavity of the round screen cylinder, the scraping device can evenly scrape the color paste inside the round screen cylinder, so that the color paste is printed on the surface of the fabric through the mesh holes on the surface of the round screen cylinder, auxiliary pulping devices are provided on both sides of the scraping device, the auxiliary pulping devices can further promote the flow of the color paste and accelerate the printing efficiency, an air supply device is provided on the top of the scraping device, the air supply device can continuously supply hot air flow to ensure the fluidity of the color paste, an air jet device is provided on the outside of one side of the auxiliary pulping device, the air jet device can accelerate the drying of the fabric printing, and can also remove the residual color paste on the surface of the round screen cylinder, a recovery box is provided on the outer surface of one side of the bottom of the round screen cylinder, the recovery box can hold the residual color paste removed, and a fabric is provided below the bottom end of the round screen cylinder.

[0006] Furthermore, the driving device includes a transmission connection ring frame and a driving motor. The transmission connection ring frame is installed on the outer surface of one end of the round net cylinder, and the driving motor is fixedly installed in the middle of the other end of the transmission connection ring frame.

[0007] Further, the scraping device includes a color paste tube, a paste feeding tube, a paste bag, a fixed rod and a scraper, the color paste tube is arranged in the middle of the inner cavity of the round mesh cylinder, the color paste tube is cylindrical in shape, and the interior of the color paste tube is hollow, a hole is opened in the middle of the bottom end of the color paste tube, a paste feeding tube is fixedly installed in the middle of one end of the color paste tube, and the other end of the paste feeding tube is fixedly connected to the existing paste feeding device, a paste bag is fixedly installed in the middle of the bottom end of the color paste tube, fixing rods are fixedly installed on the outer surfaces of both ends of the paste bag, a scraper is movably installed on the bottom of the inner side wall of the fixing rod, and the scraper is fixedly installed on both sides of the bottom end of the paste bag, and the two side surfaces of the paste bag are elastic, there are four fixing rods in total, and every two fixing rods form a group, and the two fixing rods in the same group are respectively located on the outer surfaces of the two end edges of the paste bag, a sliding groove matched with the top of the scraper is opened at the bottom of the inner side wall of the fixing rod, and the scraper is shaped like a "J".

[0008] Furthermore, the auxiliary pulping device includes an electric shaft roller, a transmission belt and a movable pressure plate. There are eight electric shaft rollers in total, and each four electric shaft rollers form a group. Two groups of electric shaft rollers are fixedly mounted on the outside of the two ends of the round net cylinder through an existing fixed frame structure. The outer surface of the electric shaft roller is movably sleeved with a transmission belt. The transmission belt is located at the bottom of the inner cavity of the round net cylinder and on the outside of both sides of the pulp bag. Movable pressure plates are fixedly installed on the surfaces of both ends of the transmission belt. The transmission belt is shaped like a waist-shaped hole. The movable pressure plate is magnetic. The movable pressure plate is shaped like a rectangle, and the outward end of the movable pressure plate is in an arc shape.

[0009] Furthermore, the air supply device includes an insulation sleeve, a heating element and an air pump. The insulation sleeve is installed on the top outer surface of the color paste tube. The insulation sleeve is semicircular in shape and the interior of the insulation sleeve is hollow. A heating element is fixedly installed on one end of the insulation sleeve, and an air pump is fixedly installed on one end of the heating element. The temperature value of the air flow heated by the heating element is adapted to the ambient temperature value that can keep the color paste fluid.

[0010] Furthermore, the jet device includes a circulating air pipe, an air containing chamber, a piston plate, an air outlet, a first valve and a second valve, one end of the circulating air pipe is fixedly connected to the bottom end of the insulation sleeve, and the circulating air pipe and the insulation sleeve are connected at the connection point, the other end of the circulating air pipe is fixedly connected to one side of the bottom end of the air containing chamber, the inner cavity of the air containing chamber is movably provided with a piston plate, the bottom end of the air containing chamber is fixedly provided with an air outlet, a first valve is provided at the connection point between the circulating air pipe and the air containing chamber, a second valve located at the top of the air outlet is provided in the middle part of the bottom end of the air containing chamber, the shape of the air containing chamber is rectangular, and the interior of the air containing chamber is hollow, there are two air containing chambers, and the air containing chambers are respectively located at two sides of the inner cavity of the round mesh cylinder, and the air containing chamber is also located outside one side of the transmission belt, and the spacing distance between the air containing chamber and the transmission belt is adapted to the length of the movable pressing plate, the piston plate is provided by the inner The piston plate is composed of two parts, the inner part of the piston plate is rectangular, and the size of this rectangle is matched with the inner cavity size of the air-containing cavity, the outer part of the piston plate is rectangular as a whole, and the outer surface of the outer part of the piston plate facing the transmission belt is recessed inwardly, the shape of the inward recessed part of the outer side of the piston plate is matched with the shape of the outward end of the movable pressure plate, and the upper and lower edges of the recessed part are arc-shaped, the outer part of the piston plate is magnetic, and the outer part of the piston plate is magnetically attracted to the movable pressure plate, the inner part of the piston plate is fixedly connected to the outer part by a cylindrical shaft rod, the surface of the air-containing cavity is provided with a slide groove matched with the cylindrical shaft rod at the connection between the inner and outer parts of the piston plate, springs are fixedly installed on both sides of the bottom end of the inner part of the piston plate, and the other end of the spring is fixedly connected to the bottom inner wall of the air-containing cavity, and the first valve and the second valve are both one-way pressure valves.

[0011] Furthermore, the recovery box is in a trapezoidal shape, and the side of the recovery box facing the round net cylinder is open. The round net cylinder is in a cylindrical shape, and mesh holes are provided on the surface of the round net cylinder.

[0012] This application has the following beneficial effects:

[0013] The present application provides a textile fabric printing machine, which is equipped with an auxiliary pulp-passing device and uses a transmission belt to drive a movable pressing plate to move in a circular motion, so that the movable pressing plate will be horizontal and move downward continuously for a distance, thereby causing the inner cavity of the pulp bag to continuously shrink inward, so that the color pulp inside the pulp bag is pushed and moved downward, and the color pulp actively flows out of the mesh holes on the surface of the circular screen cylinder, thereby achieving the effect of increasing the flow rate of the color pulp, thereby improving the printing efficiency, accelerating the penetration of the color pulp, and preventing the backflow of the color pulp, thereby fully increasing the amount of color pulp discharged.

[0014] At the same time, the movable pressing plate is used to squeeze the side of the pulp bag to deform the inner cavity of the pulp bag. When the color paste inside the pulp bag flows downward, the color paste will squeeze the top of the scraper downward, giving the scraper a pressure, so that the scraper is fixed more tightly to the inner wall of the round screen cylinder, thereby ensuring that the color paste will not overflow to the surroundings through the bottom end of the scraper, so that the color paste can be concentrated through the mesh holes, ensuring that the color paste passes evenly and sufficiently, thereby further enhancing the efficiency of the color paste passing through and further improving the effect of further improving the quality of printing.

[0015] By setting up the jet device, when the jet device on the left side releases the hot air flow outward through the second valve, the heat loss of the hot air during the flow is utilized to reduce the temperature of the hot air flow, and then under the continuous blowing of the low-temperature air flow, the color paste in a semi-dry state on the surface of the cloth is further air-dried and solidified, thereby achieving the effect of enhancing the printing quality and enabling the color paste to be quickly dried and formed. At the same time, when the jet device on the right side sprays the hot air flow outward through the second valve, it utilizes the hot air flow still at a suitable temperature to spray the surface of the round mesh cylinder, and under the hot air drying, the fluidity of the color paste remaining on the mesh of the round mesh cylinder is enhanced, and then the residual color paste is blown off the surface of the round mesh cylinder into the inner cavity of the recovery box through the blowing of the air flow, thereby achieving the effect of timely removing the residual color paste on the surface of the round mesh cylinder and recycling the residual color paste, improving the cleanliness of the surface of the round mesh cylinder and preventing the color paste from clogging the mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0017] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a cutaway perspective schematic diagram of the round screen cylinder of the present invention;

[0020] Figure 3 It is a cutaway three-dimensional schematic diagram of the structure of the present invention;

[0021] Figure 4 It is a schematic diagram of a cutaway front view of the structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the state when the piston plate of the present invention has not yet moved;

[0023] Figure 6 This is a schematic diagram of the state when the piston plate of the present invention moves to the uppermost end.

[0024] In the figure: 1. round net cylinder; 2. transmission connecting ring frame; 3. driving motor; 4. color paste tube; 5. pulp feeding tube; 6. insulation sleeve; 7. heating element; 8. air pump; 9. pulp bag; 10. fixing rod; 11. scraper; 12. electric shaft roller; 13. transmission belt; 14. movable pressure plate; 15. circulating air pipe; 16. air chamber; 17. piston plate; 18. air outlet; 19. first valve; 20. second valve; 21. recovery box; 22. cloth. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Embodiment 1

[0027] See also Figure 1-Figure 6 , a textile fabric printing machine comprises: a rotary screen cylinder 1, one end of the rotary screen cylinder 1 is fixedly mounted with a driving device, the driving device can drive the rotary screen cylinder 1 to rotate continuously, a scraping device is provided in the middle of the inner cavity of the rotary screen cylinder 1, the scraping device can scrape the color paste inside the rotary screen cylinder 1 evenly, so that the color paste passes through the mesh holes on the surface of the rotary screen cylinder 1 and is printed on the surface of the fabric 22, auxiliary pulping devices are provided on both sides of the scraping device, the auxiliary pulping devices can further promote the flow of the color paste and accelerate the printing efficiency, an air supply device is provided on the top of the scraping device, the air supply device can continuously supply hot air flow to ensure the fluidity of the color paste, an air jet device is provided on the outside of one side of the auxiliary pulping device, the air jet device can accelerate the drying of the fabric printing, and can also remove the residual color paste on the surface of the rotary screen cylinder 1, a recovery box 21 is provided on the outer surface of one side of the bottom of the rotary screen cylinder 1, the recovery box 21 can hold the residual color paste removed, and a fabric 22 is provided below the bottom end of the rotary screen cylinder 1.

[0028] See also Figure 1-Figure 6The driving device includes a transmission connection ring frame 2 and a driving motor 3. The transmission connection ring frame 2 is installed on the outer surface of one end of the round net cylinder 1, and the driving motor 3 is fixedly installed in the middle of the other end of the transmission connection ring frame 2.

[0029] See also Figure 1-Figure 6 The scraping device includes a color paste tube 4, a pulp delivery tube 5, a pulp bag 9, a fixing rod 10 and a scraper 11. The color paste tube 4 is arranged in the middle of the inner cavity of the round net cylinder 1. The color paste tube 4 is cylindrical in shape, and the inside of the color paste tube 4 is hollow. A hole is opened in the middle of the bottom end of the color paste tube 4. The pulp delivery tube 5 is fixedly installed in the middle of one end of the color paste tube 4. The other end of the pulp delivery tube 5 is fixedly connected to the existing pulp feeding device. The pulp bag 9 is fixedly installed in the middle of the bottom end of the color paste tube 4. The two ends of the pulp bag 9 have external surfaces. A fixing rod 10 is fixedly installed on the surface, and a scraper 11 is movably installed on the bottom of the inner wall of the fixing rod 10, and the scraper 11 is fixedly installed on both sides of the bottom end of the slurry bag 9. The two side surfaces of the slurry bag 9 are elastic. There are four fixing rods 10 in total, and every two fixing rods 10 form a group. The two fixing rods 10 in the same group are respectively located on the outer surfaces of the two end edges of the slurry bag 9. A sliding groove matching the top of the scraper 11 is provided at the bottom of the inner wall of the fixing rod 10, and the scraper 11 is in a "J" shape.

[0030] See also Figure 1-Figure 6The auxiliary pulping device comprises an electric shaft roller 12, a transmission belt 13 and a movable pressing plate 14. There are eight electric shaft rollers 12 in total, and each four electric shaft rollers 12 form a group. Two groups of electric shaft rollers 12 are fixedly mounted on the outside of both ends of the round net cylinder 1 through the existing fixed frame structure. The outer surface of the electric shaft roller 12 is movably sleeved with a transmission belt 13. The transmission belt 13 is located at the bottom of the inner cavity of the round net cylinder 1 and is located on the outside of both sides of the pulp bag 9. The surface of both ends of the transmission belt 13 is fixedly installed with a movable pressing plate 14. The shape of the transmission belt 13 is a waist-shaped hole. The movable pressing plate 14 is magnetic. The shape of the movable pressing plate 14 is rectangular, and the outward end of the movable pressing plate 14 is arc-shaped. By setting the auxiliary pulping device, when the cloth 22 is pressed by the round net cylinder 1, During printing, at this time, the color paste is poured into the interior of the color paste tube 4 through the paste feeding tube 5, and then flows into the interior of the paste bag 9 through the opening at the bottom end of the color paste tube 4, thereby filling the paste bag 9. When the round screen cylinder 1 continues to rotate, the relative movement of the scraper 11 and the inner wall of the round screen cylinder 1 pushes the color paste inside the paste bag 9, and then penetrates into the surface of the cloth 22 through the mesh holes on the surface of the round screen cylinder 1. Under the extrusion of the round screen cylinder 1, printing is completed. Among them, when the round screen cylinder 1 continues to print, the electric shaft roller 12 is used to drive the transmission belt 13 to operate continuously, and the transmission belt 13 rotates cyclically, thereby driving the movable pressing plate 14 to move cyclically. When the movable pressing plate 14 moves to both sides of the transmission belt 13, that is, two movable pressing plates When both the left and right movable pressing plates 14 are horizontal and transverse, at this time, the movable pressing plate 14 facing the pulp bag 9 will squeeze the side of the pulp bag 9 laterally, so that the side of the pulp bag 9 is concave inward. Therefore, under the relative squeezing action of the left and right movable pressing plates 14 facing the pulp bag 9, the two side surfaces of the pulp bag 9 are concave inward, so that the pulp bag 9 forms an extruded and contracted state. Because the transmission belt 13 is in the shape of a waist-shaped hole, the movable pressing plate 14 will be horizontal and transverse and continue to move downward for a distance. When the movable pressing plate 14 moves downward, the movable pressing plate 14 always squeezes the side of the pulp bag 9, so that the pulp bag 9 continues to form an extruded and contracted state. The inner cavity of the pulp bag 9 will continue to change and shrink with the deformation of the side of the pulp bag 9, thereby causing the color paste inside the pulp bag 9 to be affected by the deformation of the inner cavity of the pulp bag 9. The color paste is pushed downward by the influence, so as to push the color paste out of the inner cavity of the paste bag 9, so that the color paste actively flows into the mesh holes on the surface of the round screen cylinder 1, thereby increasing the flow rate of the color paste, accelerating the penetration of the color paste, and thus improving the printing efficiency. When the color paste moves downward to the inner wall of the round screen cylinder 1 and is pushed by the scraper 11, the color paste at the upper end flows downward due to the deformation and squeezing effect of the paste bag 9, and the color paste scraped by the scraper 11 at the lower end cannot flow back upward, and can only flow downward, thereby fully increasing the color paste discharge amount, ensuring that the color paste discharge amount at the mesh holes of the round screen cylinder 1 is sufficient when printing, ensuring the printing quality, and preventing the scraper 11 from scraping out insufficient amount of color paste when scraping the color paste, thereby causing the problem of shallow printing on the fabric surface. At the same time,This also avoids the existing problem that the color paste flows downward through the mesh only by relying on the color paste flow itself and pushing with the scraper 11, resulting in a low color paste flow rate, and when the scraper 11 pushes and scrapes the color paste, the color paste will flow back along the surface of the scraper 11, thereby resulting in insufficient discharge of the color paste.

[0031] At the same time, when the movable pressing plate 14 squeezes the side of the slurry bag 9, the inner cavity of the slurry bag 9 is deformed, and the color paste in the slurry bag 9 flows downward, the color paste flows downward to generate a certain flow force. Because the scraper 11 is in a "J" shape, when the color paste surges downward, the color paste will squeeze the top of the scraper 11 downward, giving the scraper 11 a pressure to make the scraper 11 move downward. Because the scraper 11 is initially, the bottom end of the scraper 11 is tightly attached to the inner wall of the round net cylinder 1, and each time the color paste surges downward, it will give the scraper 11 a downward pressure, so that the bottom end of the scraper 11 cannot be separated from the inner wall of the round net cylinder 1. The existing scraper 11 cannot keep in close contact with the inner wall of the round screen cylinder 1 at all times, and there is a gap, which causes the color paste to overflow through the gap when being scraped and pushed by the scraper 11, thereby causing the color paste to be dispersed and unable to pass through the mesh holes in a concentrated manner, resulting in the color paste being unable to pass through the mesh holes in a uniform and concentrated manner, resulting in low printing quality or even printing failure.

[0032] See also Figure 1-Figure 6 The air supply device includes a heat preservation sleeve 6, a heating element 7 and an air pump 8. The heat preservation sleeve 6 is installed on the outer surface of the top end of the color paste tube 4. The heat preservation sleeve 6 is semicircular in shape and the interior of the heat preservation sleeve 6 is hollow. A heating element 7 is fixedly installed at one end of the heat preservation sleeve 6. An air pump 8 is fixedly installed at one end of the heating element 7. The temperature value of the air flow heated by the heating element 7 is adapted to the ambient temperature value that can keep the color paste fluid. By setting the air supply device, the air pump 8 is used to continuously extract external air, so that the air is heated by the heating element 7. The heating here is not high-temperature heating, but is based on the characteristics of the color paste used. The properties can be determined as needed. For example, if the color paste has good fluidity at 25°C, the heating temperature of the heating element 7 can be set at about 25°C. When the air is heated and then flows into the inner cavity of the insulation sleeve 6, the heat conduction between the insulation sleeve 6 and the color paste tube 4 can keep the ambient temperature of the inner cavity of the color paste tube 4 at 25°C. When the round screen cylinder 1 is continuously printing, the color paste in the inner cavity of the color paste tube 4 will not cool down and solidify, and will always maintain good fluidity, thereby effectively promoting the normal discharge of the color paste and further improving the printing quality and efficiency.

[0033] See also Figure 1-Figure 6, wherein the jet device includes a circulating air pipe 15, an air containing chamber 16, a piston plate 17, an air outlet 18, a first valve 19 and a second valve 20, one end of the circulating air pipe 15 is fixedly connected to the bottom end of the heat preservation sleeve 6, and the connection between the circulating air pipe 15 and the heat preservation sleeve 6 is mutually connected, the other end of the circulating air pipe 15 is fixedly connected to one side of the bottom end of the air containing chamber 16, the inner cavity of the air containing chamber 16 is movably equipped with a piston plate 17, the bottom end of the air containing chamber 16 is fixedly equipped with an air outlet 18, a first valve 19 is provided at the connection between the circulating air pipe 15 and the air containing chamber 16, a second valve 20 located at the top end of the air outlet 18 is provided in the middle of the bottom end of the air containing chamber 16, the shape of the air containing chamber 16 is rectangular, and the interior of the air containing chamber 16 is hollow, there are two air containing chambers 16, and the air containing chamber 16 The cavities 16 are respectively located at the positions on both sides of the inner cavity of the round net cylinder 1, and the air-containing cavity 16 is also located outside one side of the transmission belt 13, and the spacing distance between the air-containing cavity 16 and the transmission belt 13 is adapted to the length of the movable pressure plate 14. The piston plate 17 is composed of an inner and outer part. The inner part of the piston plate 17 is rectangular, and the size of this rectangle is adapted to the inner cavity size of the air-containing cavity 16. The outer part of the piston plate 17 is rectangular in shape as a whole. The outer surface of the outer part of the piston plate 17 facing the side of the transmission belt 13 is concave inwardly. The shape of the inward concave part of the outer side of the piston plate 17 is adapted to the shape of the outward end of the movable pressure plate 14, and the upper and lower edges of the concave part are arc-shaped. The outer part of the piston plate 17 is magnetic, and the outer part of the piston plate 17 is in contact with the movable pressure plate 1 4 magnetic attraction, the inner part and the outer part of the piston plate 17 are fixedly connected through a cylindrical shaft, the surface of the air chamber 16 is provided with a slide groove matched with the cylindrical shaft where the inner and outer parts of the piston plate 17 are connected, springs are fixedly installed on both sides of the bottom end of the inner part of the piston plate 17, and the other end of the spring is fixedly connected to the bottom inner wall of the air chamber 16, the first valve 19 and the second valve 20 are both one-way pressure valves, by setting the jet device, when the transmission belt 13 drives the movable pressure plate 14 to move cyclically, the movable pressure plate 14 facing the slurry bag 9 will laterally squeeze the inner cavity of the slurry bag 9, and the movable pressure plate 14 facing the air chamber 16 will horizontally face the outer part of the piston plate 17, and be inserted into the outer depression of the piston plate 17, because the movable pressure plate 14 and The piston plates 17 are magnetically attracted to each other, so when the movable pressure plate 14 moves upward, the movable pressure plate 14 will drive the piston plate 17 to move upward. When the piston plate 17 moves upward, the volume of the cavity between the piston plate 17 and the bottom end of the air-containing chamber 16 becomes larger, thereby generating negative pressure. Under the action of the negative pressure, the first valve 19 opens the valve, thereby sucking back the hot air inside the insulation sleeve 6, causing a large amount of hot air to flow into the inner cavity of the air-containing chamber 16. When the movable pressure plate 14 moves to the uppermost end, at this time, the movable pressure plate 14 is separated from the piston plate 17, and the movable pressure plate 14 is turned to the vertical direction. After the piston plate 17 is separated from the movable pressure plate 14, the piston plate 17 is reset downward under the action of the spring force. Then, when the piston plate 17 is reset downward, the piston plate 17 will squeeze the hot air in the inner cavity of the air-containing chamber 16.Because the first valve 19 and the second valve 20 are both one-way pressure valves, the first valve 19 cannot be opened at this time, and the second valve 20 is opened by the air pressure, so that the hot air is ejected outward in large quantities through the second valve 20, and then blows on the surface of the round screen cylinder 1, and forms an airflow to leak outward through the mesh holes on the surface of the round screen cylinder 1. When the round screen cylinder 1 is printed, the surface of the round screen cylinder 1 on the left side belongs to the area that has not been stained with color, and the surface of the round screen cylinder 1 on the right side belongs to the area that has been printed and is stained with color paste. The central area of ​​the round screen cylinder 1 The area is the color-stained printing area, and when the jet device on the left side releases hot air flow through the second valve 20, the hot air flow blows through the surface of the round screen cylinder 1 to the surface of the cloth 22. Under the blowing of hot air, the color paste in a semi-dry state on the surface of the cloth 22 is further dried and solidified, thereby enhancing the printing quality and preventing the problem of "the color paste cannot be dried and formed quickly, resulting in the next step of printing, the printing of the previous step is not formed and is mixed with the next step of printing, causing partial color mixing, which makes the overall printing pattern color unclear or even wrong color". At the same time, when the jet device on the right side ejects hot air outward through the second valve 20, the hot air blows the surface of the round screen cylinder 1. Because the temperature of the hot air flow is close to the flow temperature of the color paste, the fluidity of the color paste remaining on the mesh of the round screen cylinder 1 becomes stronger under the hot air blowing. Because the air flow is constantly blowing, the residual color paste is blown away from the surface of the round screen cylinder 1, and the residual color paste is blown into the inner cavity of the recovery box 21 for recovery. Therefore, the effect of timely removing the color paste on the surface of the round screen cylinder 1 is achieved, the cleanliness of the surface of the round screen cylinder 1 is improved, and the residual color paste is prevented from clogging the mesh, causing the subsequent color paste to be unable to be discharged normally, thereby affecting the normal printing problem.

[0034] See also Figure 1-Figure 6 The recovery box 21 is trapezoidal in shape, and the side of the recovery box 21 facing the round net cylinder 1 is open, the round net cylinder 1 is cylindrical in shape, and mesh holes are opened on the surface of the round net cylinder 1.

[0035] The working principle of the method of the present invention is as follows:

[0036] When the cloth 22 needs to be printed, the existing slurry feeding device is first started, and the color paste is continuously pumped into the inner cavity of the color paste tube 4 through the slurry feeding tube 5 by the slurry feeding device until the color paste fills the inner cavity of the slurry bag 9 and fills a part of the inner cavity of the color paste tube 4. At this time, the scraper 11 is tightly attached to the inner wall of the round screen cylinder 1, and the scraper 11 is facing the non-hole area of ​​the round screen cylinder 1, so that the color paste cannot leak out at this time. After the color paste is poured, at this time, the other components of the printing machine are started, and the driving device, auxiliary slurry device, air supply device and jet device in the invented device are also started.

[0037] The cloth 22 is delivered to the surface of the rubber blanket through the existing cloth feeding device, and the rubber blanket is driven forward by the driving roller, thereby driving the cloth 22 to move forward continuously, wherein the cloth 22 will adhere to the surface of the rubber blanket, thereby achieving a transmission and driving effect, and the invented device is a round screen device in a printing machine, with a total of several groups, which are evenly distributed above the surface of the rubber blanket, so as to be used for printing work of the cloth 22, and the surface printing effect of the cloth 22 is achieved through the invented device.

[0038] When the rubber blanket drives the fabric 22 to move, the driving device can be started, and the rotary screen cylinder 1 is driven to rotate continuously through the driving device. When the rotary screen cylinder 1 starts to rotate, under the relative movement of the scraper 11 and the inner wall of the rotary screen cylinder 1, the color paste inside the slurry bag 9 is scraped by the scraper 11 and pushed into the mesh of the rotary screen cylinder 1, and penetrates downward to the surface of the fabric 22 through the mesh of the rotary screen cylinder 1. Under the relative action of the rotary screen cylinder 1, the pressure roller and the lifting device, the color paste is printed on the surface of the fabric 22 to form a specific pattern of printing, wherein the rotary screen cylinder 1 will be driven by the driving device to rotate continuously, and the scraping device is a fixed device, which is externally erected through the existing fixed frame structure, so that the scraping device is suspended and erected as a whole in the middle of the inner cavity of the rotary screen cylinder 1, and thus will not move. The structural layout can be referred to. Figure 1-2 .

[0039] When the round screen cylinder 1 continues to print on the surface of the cloth 22, the electric shaft roller 12 in the auxiliary pulping device will drive the transmission belt 13 to operate continuously. When the transmission belt 13 rotates cyclically, the transmission belt 13 will drive the movable pressing plate 14 to move cyclically. When the movable pressing plate 14 moves to a horizontal horizontal state, at this time, the movable pressing plate 14 facing the pulp bag 9 will laterally squeeze the side of the pulp bag 9, causing the side of the pulp bag 9 to deform inwardly. Because the transmission belt 13 is in the shape of a waist-shaped hole, when the transmission belt 13 rotates cyclically, the movable pressing plate 14 The plate 14 will be in a horizontal state and driven by the transmission belt 13 to move downward continuously for a certain distance. When the movable pressure plate 14 moves downward, the movable pressure plate 14 causes the inner cavity of the slurry bag 9 to continuously deform and shrink, so that the color paste inside the slurry bag 9 is affected by the deformation of the inner cavity of the slurry bag 9 and is pushed downward to flow out, so that the color paste actively flows into the mesh holes on the surface of the round mesh cylinder 1, and penetrates through the mesh holes on the surface of the round mesh cylinder 1 to the surface of the cloth 22 to complete the printing, thereby achieving the effect of increasing the flow rate of the color paste, accelerating the penetration of the color paste, and improving the printing efficiency.

[0040] At the same time, when the color paste in the slurry bag 9 flows downward, the color paste flowing downward generates downward pressure on the top of the scraper 11, so that the scraper 11 is fixed downwardly more tightly to the inner wall of the round screen cylinder 1.

[0041] At the same time, the air pump 8 in the air supply device continuously operates to extract external air and discharge the air into the inner cavity of the insulation sleeve 6. Before the air flows into the inner cavity of the insulation sleeve 6, the heating element 7 heats the air to the required temperature for the color paste to maintain good fluidity. A large amount of hot air gathers in the inner cavity of the insulation sleeve 6, so that the insulation sleeve 6 contains a certain temperature, and then through the heat conduction effect between the insulation sleeve 6 and the color paste tube 4, the ambient temperature of the inner cavity of the color paste tube 4 can be maintained at the temperature required for the color paste to flow well through the insulation sleeve 6. Therefore, when the round screen cylinder 1 is continuously printing, the color paste in the inner cavity of the color paste tube 4 will not cool down and solidify, and will always maintain good fluidity.

[0042] At the same time, when the transmission belt 13 drives the movable pressure plate 14 to move in a circular motion, the movable pressure plate 14 toward the pulp bag 9 will laterally squeeze the inner cavity of the pulp bag 9, and the movable pressure plate 14 toward the air containing chamber 16 will horizontally and laterally face the piston plate 17, and the movable pressure plate 14 will be inserted into the recessed part of the outer side of the piston plate 17. Because the movable pressure plate 14 and the piston plate 17 are magnetically attracted to each other, when the movable pressure plate 14 toward the air containing chamber 16 moves upward, the movable pressure plate 14 will drive the piston plate 17 to move upward. When the piston plate 17 moves upward, the volume of the cavity between the piston plate 17 and the bottom end of the air containing chamber 16 becomes larger, thereby generating negative pressure. Under the action of negative pressure, the first valve 19 opens the valve, and then a large amount of hot air inside the insulation sleeve 6 flows into the inner cavity of the air containing chamber 16 until the movable pressure plate 14 moves to the uppermost end. At this time, the movable pressure plate 14 is separated from the piston plate 17, and the two movable pressure plates 14 are turned to the vertical direction. After the piston plate 17 is separated from the movable pressure plate 14, the piston plate 17 is reset downward by the spring force, and then the piston plate 17 squeezes the hot air in the inner cavity of the air containing chamber 16. The first valve 19 will not open the valve, and the second valve 20 opens the valve due to the air pressure, so that the hot air is ejected outward in large quantities through the second valve 20.

[0043] When the rotary screen cylinder 1 is printing, the surface of the rotary screen cylinder 1 can be divided into three areas. Assume that the surface of the rotary screen cylinder 1 on the left is the area that has not been printed and not stained, the surface of the rotary screen cylinder 1 on the right is the area that has been printed and stained with color paste, and the central area of ​​the rotary screen cylinder 1 is the stained printing area. Based on the above three areas, the following understanding is made:

[0044] When the jet device on the left side of the device of the invention releases hot air flow to the outside through the second valve 20, the hot air flow passes through the surface of the round screen cylinder 1 and blows to the surface of the cloth 22. Under the blowing of hot air, the color paste in a semi-dry state on the surface of the cloth 22 is further air-dried and solidified, thereby enhancing the printing quality. The air-drying and solidification effect here mainly lies in that when the hot air flow passes through the surface of the round screen cylinder 1 and then blows to the surface of the cloth 22, the hot air flow path is longer at this time, and the contact with the external environment will cause the hot air temperature to drop, that is, the initial hot air temperature is a temperature value that can increase the fluidity of the color paste and make the color paste fluidity better, but when the hot air passes through the round screen cylinder 1 and blows to the surface of the cloth 22, the hot air flow temperature will have heat loss at this time, and then the temperature will drop, so that at this time, the air flow temperature blown to the surface of the cloth 22 is already lower than the initial temperature, and in a low temperature environment, the color paste will accelerate solidification, and then under the blowing of continuous low-temperature airflow, the color paste will accelerate solidification.

[0045] At the same time, when the jet device on the right side ejects a hot gas flow outward through the second valve 20, when the hot gas flow is sprayed on the surface of the round mesh cylinder 1, because the temperature contained in the hot gas flow is close to the temperature value that enhances the fluidity of the color paste, and then under the direct blowing and baking of the hot gas, the fluidity of the color paste remaining on the mesh holes on the surface of the round mesh cylinder 1 becomes stronger, and because the air flow has a certain air flow driving force, and then under the continuous blowing of the hot gas flow, the residual color paste can be blown away from the surface of the round mesh cylinder 1, and the residual color paste can be blown into the inner cavity of the recovery box 21 for recovery, thereby achieving the effect of timely removing the color paste on the surface of the round mesh cylinder 1.

[0046] When the printing of the cloth 22 is completed, the operation of the device of the invention and other components of the printing machine can be stopped.

Claims

1. A textile fabric printing machine, characterized in that: include: A round screen cylinder (1) is provided with a driving device fixedly mounted on one end of the round screen cylinder (1), and the driving device can drive the round screen cylinder (1) to rotate continuously. A scraping device is provided in the middle of the inner cavity of the round screen cylinder (1), and the scraping device can evenly scrape the color paste inside the round screen cylinder (1), so that the color paste passes through the mesh holes on the surface of the round screen cylinder (1) and is printed on the surface of the cloth (22). Auxiliary pulp passing devices are provided on both sides of the scraping device, and the auxiliary pulp passing devices can further promote the flow of the color paste and accelerate the printing. The scraping device has high efficiency. An air supply device is provided at the top of the scraping device. The air supply device can continuously supply hot air flow to ensure the fluidity of the color paste. An air jet device is provided on the outside of one side of the auxiliary pulp passing device. The air jet device can accelerate the drying of the printed fabric and remove the residual color paste on the surface of the round screen cylinder (1). A recovery box (21) is provided on the outer surface of one side of the bottom of the round screen cylinder (1). The recovery box (21) can hold the residual color paste removed. A cloth (22) is provided below the bottom end of the round screen cylinder (1).

2. A textile fabric printing machine according to claim 1, characterized in that: The driving device comprises a transmission connection ring frame (2) and a driving motor (3); the transmission connection ring frame (2) is mounted on the outer surface of one end of the round net cylinder (1); and the driving motor (3) is fixedly mounted in the middle of the other end of the transmission connection ring frame (2).

3. A textile fabric printing machine according to claim 2, characterized in that: The scraping device comprises a color paste tube (4), a paste delivery tube (5), a paste bag (9), a fixing rod (10) and a scraper (11); the color paste tube (4) is arranged in the middle of the inner cavity of the round net cylinder (1); the color paste tube (4) is cylindrical in shape, and the interior of the color paste tube (4) is hollow; a hole is opened in the middle of the bottom end of the color paste tube (4); a paste delivery tube (5) is fixedly installed in the middle of one end of the color paste tube (4); the other end of the paste delivery tube (5) is fixedly connected to the existing paste feeding device; a paste bag (9) is fixedly installed in the middle of the bottom end of the color paste tube (4); both ends of the paste bag (9) are A fixing rod (10) is fixedly installed on the outer surfaces of both sides, and a scraper (11) is movably installed on the bottom of the inner wall of the fixing rod (10), and the scraper (11) is fixedly installed on both sides of the bottom end of the slurry bag (9). The surfaces of both sides of the slurry bag (9) are elastic. There are four fixing rods (10) in total, and every two fixing rods (10) form a group. The two fixing rods (10) in the same group are respectively located on the outer surface of the two end edges of the slurry bag (9). The bottom of the inner wall of the fixing rod (10) is provided with a sliding groove that is compatible with the top of the scraper (11), and the scraper (11) is in the shape of a "J".

4. A textile fabric printing machine according to claim 3, characterized in that: The auxiliary pulping device comprises an electric shaft roller (12), a transmission belt (13) and a movable pressure plate (14). There are eight electric shaft rollers (12) in total, and four electric shaft rollers (12) form a group. Two groups of electric shaft rollers (12) are fixedly mounted on the outside of the two ends of the round net cylinder (1) through an existing fixed frame structure. The outer surface of the electric shaft roller (12) is movably sleeved with a transmission belt (13). The transmission belt (13) is located at the bottom of the inner cavity of the round net cylinder (1) and on the outside of both sides of the pulp bag (9). The surfaces of both ends of the transmission belt (13) are fixedly mounted with movable pressure plates (14). The shape of the transmission belt (13) is a waist-shaped hole. The movable pressure plate (14) is magnetic. The shape of the movable pressure plate (14) is rectangular, and the outward end of the movable pressure plate (14) is arc-shaped.

5. A textile fabric printing machine according to claim 4, characterized in that: The air supply device comprises a heat-insulating sleeve (6), a heating element (7) and an air pump (8); the heat-insulating sleeve (6) is mounted on the outer surface of the top end of the color paste tube (4); the heat-insulating sleeve (6) is semicircular in shape and the interior of the heat-insulating sleeve (6) is hollow; one end of the heat-insulating sleeve (6) is fixedly mounted with the heating element (7); one end of the heating element (7) is fixedly mounted with the air pump (8); the temperature value of the air flow heated by the heating element (7) is adapted to the ambient temperature value that enables the color paste to maintain fluidity.

6. A textile fabric printing machine according to claim 5, characterized in that: The jet device comprises a circulating air pipe (15), an air containing chamber (16), a piston plate (17), an air outlet (18), a first valve (19) and a second valve (20); one end of the circulating air pipe (15) is fixedly connected to the bottom end of the heat preservation sleeve (6), and the connecting part of the circulating air pipe (15) and the heat preservation sleeve (6) is mutually connected; the other end of the circulating air pipe (15) is fixedly connected to one side of the bottom end of the air containing chamber (16); the inner cavity of the air containing chamber (16) is movably provided with the piston plate (17); the bottom end of the air containing chamber (16) is fixedly provided with the air outlet (18); ), a first valve (19) is provided at the connection between the circulating air pipe (15) and the air containing chamber (16), a second valve (20) is provided at the middle of the bottom end of the air containing chamber (16) and is located at the top of the air outlet (18), the air containing chamber (16) is in the shape of a rectangle, and the interior of the air containing chamber (16) is hollow, there are two air containing chambers (16), and the air containing chambers (16) are respectively located at two sides of the inner cavity of the round net cylinder (1), and the air containing chamber (16) is also located outside one side of the transmission belt (13), and the interval between the air containing chamber (16) and the transmission belt (13) is The piston plate (17) is composed of an inner and outer part, the inner part of the piston plate (17) is rectangular, and the size of the rectangle is matched with the inner size of the air chamber (16), the outer part of the piston plate (17) is rectangular in shape, the outer surface of the outer part of the piston plate (17) facing the transmission belt (13) is inwardly concave, the shape of the inward concave part of the outer side of the piston plate (17) is matched with the shape of the outward end of the movable pressure plate (14), and the upper and lower edges of the concave part are arc-shaped, and the piston plate ( The outer part of the piston plate (17) is magnetic, and the outer part of the piston plate (17) is magnetically attracted to the movable pressure plate (14). The inner part of the piston plate (17) is fixedly connected to the outer part through a cylindrical shaft. The surface of the air chamber (16) is provided with a slide groove that is compatible with the cylindrical shaft at the connection between the inner and outer parts of the piston plate (17). Springs are fixedly installed on both sides of the bottom end of the inner part of the piston plate (17), and the other end of the spring is fixedly connected to the inner wall of the bottom of the air chamber (16). The first valve (19) and the second valve (20) are both one-way pressure valves.

7. A textile fabric printing machine according to claim 6, characterized in that: The recovery box (21) is in the shape of a trapezoid, and the side of the recovery box (21) facing the round net cylinder (1) is open. The round net cylinder (1) is in the shape of a cylinder, and mesh holes are provided on the surface of the round net cylinder (1).

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