A scanning digital textile printing machine

Abstract

The present invention relates to the field of digital printing technology, and discloses a scanning textile digital printing machine, including a frame, the frame including a bottom beam and a support leg, a scanning platform is installed on the bottom beam, the frame is provided with a crossbeam above the scanning platform, an inkjet cartridge is slidably connected to the crossbeam, the scanning platform also includes a U-shaped cavity, a suction fan is installed below the U-shaped cavity, the air inlet of the suction fan is arranged on the bottom surface of the bottom beam, an upper plate is fixed above the U-shaped cavity, and a plurality of suction holes connected up and down are arranged on the upper plate. A lower plate that is slidably connected is arranged below the upper plate, through holes corresponding to the suction holes on the upper plate are arranged on the lower plate, and then the lower plate is fixed on a support frame, the support frame cooperates with the paper feed shaft, and when the paper feed shaft rotates, the support frame retreats to close the suction holes to prevent suction from affecting the advancement of the material, and when the paper feed shaft is stationary, the support frame automatically resets to open the suction holes to improve the scanning flatness.

Description

Technical Field

[0001] The invention relates to the technical field of digital printing, in particular to a scanning type textile digital printing machine. Background Art

[0002] Scanning textile digital printing machine is a device that prints patterns directly onto textiles through digital means. It uses advanced computer technology and inkjet technology to achieve accurate, efficient and personalized printing of patterns. It has the advantages of high precision, high efficiency and high flexibility, and can adapt to different textiles and market needs.

[0003] The working principle of the scanning textile digital printing machine is mainly based on inkjet printing technology. Specifically, it uses the following steps to print patterns: First, the pattern to be printed is input into the computer through scanning, digital photos or computer production; the pattern is separated and processed using special software to ensure that each color can be accurately printed on the textile; during the printing process, the nozzle is mounted on a bracket and moves back and forth in the left and right directions in the weft direction of the textile. After each printing (i.e. one pass), the textile will move forward a certain distance (such as half or one quarter of the effective printing length of the nozzle), and then the nozzle starts to print the next pass; through multiple printings (multiple passes), a complete pattern is finally formed on the textile.

[0004] In the prior art, scanning digital printing machines have high requirements for the flatness of the fabric surface during the printing process. If the fabric surface is uneven or has wrinkles, it will affect the printing effect and produce defective products. For example, the patent document CN111114154B disclosed a scanning textile digital printing machine. Before printing, the cloth is attached to the conveyor belt through a cloth-loading mechanism. In order to keep the cloth close to the conveyor belt, it is necessary to first apply a layer of glue on the conveyor belt, and the cloth is kept close to the conveyor belt by the adhesion of the glue.

[0005] However, the method of adding glue to the conveyor belt will have problems such as difficulty in cleaning and the need to frequently replace the glue, which is not conducive to reducing costs and improving production efficiency. Therefore, the present invention proposes a solution that uses the adsorption effect generated by wind power to make the cloth fit on the scanning platform. At the same time, when using wind power for adsorption, there will be a problem that the suction force is too large, making it difficult for the paper to move forward. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the present invention provides a scanning textile digital printing machine, which solves the problems in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions:

[0010] A scanning textile digital printing machine comprises a frame, the frame comprises a bottom beam and a support leg, a scanning platform is mounted on the bottom beam, a cross beam is arranged on the frame above the scanning platform, an inkjet cartridge is slidably connected to the cross beam, a paper feed shaft is arranged in the scanning platform, a pressure wheel is arranged at the bottom of the cross beam, a roller is arranged at the bottom end of the pressure wheel to support the paper feed shaft, and the scanning platform further comprises:

[0011] The U-shaped cavity is fixed above the bottom beam and has a U-shaped structure, wherein the U-shaped opening faces upward;

[0012] A suction fan is installed below the U-shaped cavity, and an air inlet of the suction fan is arranged on the bottom surface of the bottom beam;

[0013] The upper plate is fixed above the U-shaped cavity, and is provided with a plurality of suction holes which are connected up and down.

[0014] Preferably, the bottom of the upper plate is slidably connected to the lower plate, the lower plate is provided with a through hole corresponding to the air suction hole on the upper plate, the lower plate is fixedly connected to at least one support frame, the support frame is slidably connected in the movable groove, the movable groove is provided with a return spring on the rear side of the support frame, the support frame is arranged below the paper feed shaft, the support frame is provided with an arc-shaped protrusion on the rear side of the paper feed shaft away from the upper plate and the lower plate, the position of the paper feed shaft corresponding to the arc-shaped protrusion is provided with an axis groove, when the paper feed shaft is stationary, the arc-shaped protrusion is stuck in the axis groove, when the paper feed shaft rotates, the outer ring position of the paper feed shaft pushes the support frame backward, thereby driving the lower plate to retreat, so that the air suction hole on the upper plate is staggered with the through hole on the lower plate, so that when the material moves forward, the air suction hole is closed to prevent the suction force from affecting the advancement of the material, and when the material is stationary and scanned, the air vents are opened to allow the material to be adsorbed on the upper surface of the upper plate.

[0015] Preferably, the support frame is further provided with a friction pad at the bottom of the paper feed shaft. When the paper feed shaft rotates, it contacts the friction pad to generate friction force to drive the support frame backward, thereby preventing the arc-shaped protrusion from being stuck in the shaft groove back and forth and generating vibration when the paper feed shaft rotates. A section is provided at the bottom of the paper feed shaft when it is stationary. The section is an inwardly concave groove. When the paper feed shaft is stationary, there is a gap between the section and the friction pad, thereby preventing the friction force from affecting the rapid resetting of the lower plate.

[0016] Preferably, the movable groove includes side plates on both sides, the side plates are fixed on the U-shaped cavity, and the support frame slides between the two side plates.

[0017] Preferably, the crossbeam includes a synchronous belt driven by a No. 2 motor, a fixed pressure plate and a movable pressure plate are provided on the back of the inkjet cartridge, the fixed pressure plate and the movable pressure plate are fixedly connected by bolts, the synchronous belt is fixed to the inkjet cartridge by the fixed pressure plate and the movable pressure plate, the synchronous belt drives the inkjet cartridge to slide left and right when it moves, and a grating for detecting the moving distance is also provided on the inkjet cartridge.

[0018] Preferably, a pressure wheel shaft is provided at the bottom of the cross beam, and a plurality of pressure wheels distributed in an array are provided on the pressure wheel shaft, and each pressure wheel is elastically rotatably connected to the pressure wheel shaft. The roller at the bottom end of the pressure wheel is used to push the material against the surface of the paper feed shaft, thereby increasing the friction between the paper feed shaft and the material, thereby improving the printing accuracy.

[0019] Preferably, cloth rubber layers are arranged at intervals on the paper feeding shaft to increase the friction between the paper feeding shaft and the material.

[0020] Preferably, one end of the paper feed shaft is connected to motor No. 1 through a belt or gear transmission, and the paper feed shaft is driven to rotate by the rotation of motor No. 1, and the axial direction of the paper feed shaft is parallel to the sliding direction of the inkjet cartridge.

[0021] Preferably, a liftable support plate is arranged between the bottom of the U-shaped cavity and the bottom beam, each suction fan is arranged in the gap between two adjacent support plates, and the air outlet of the suction fan is arranged on the side away from the U-shaped cavity.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a scanning textile digital printing machine, which has the following beneficial effects:

[0024] 1. The scanning textile digital printing machine is provided with a suction fan under the U-shaped cavity, the air inlet of the suction fan is provided at the bottom of the U-shaped cavity, and an upper plate is provided above the U-shaped cavity, and suction holes connected up and down are provided on the upper plate. The suction fan generates suction force, and the suction holes on the upper plate are used to make the material passing through the upper surface of the upper plate closely fit on the upper plate, thereby improving the scanning flatness.

[0025] 2. The scanning textile digital printing machine is characterized in that a lower plate which is slidably connected is arranged under the upper plate, a through hole corresponding to the air suction hole on the upper plate is arranged on the lower plate, and then the lower plate is fixed on the support frame, and an arc-shaped protrusion is arranged on the rear side of the support frame corresponding to the paper feed shaft. When the paper feed shaft is stationary, the arc-shaped protrusion is stuck in the shaft groove on the paper feed shaft. At this time, the through hole on the lower plate corresponds to the air vent on the upper plate one by one, so that when the material is scanned in a stationary state, the air suction hole on the upper plate is used to generate suction to improve the flatness, and when the paper feed shaft rotates, that is, the material moves forward, the arc-shaped protrusion presses on the outer ring position of the paper feed shaft, so that the support frame moves backward, thereby driving the lower plate to retreat, so that the air suction hole on the upper plate is staggered with the through hole on the lower plate, and the air suction hole is closed to prevent the suction force from affecting the advancement of the material.

[0026] 3. The scanning textile digital printing machine arranges a friction pad on the support frame so that when the paper feed shaft rotates, the friction force is used to assist the support frame to retreat. Therefore, each time the arc-shaped protrusion is rotated to align with the cutting surface, the arc-shaped protrusion will not be completely stuck in the shaft groove, thereby reducing the collision between the paper feed shaft and the arc-shaped protrusion, thereby improving the stability of the device.

[0027] 4. The scanning textile digital printing machine sets a cut surface at the bottom when the paper feed shaft is stationary, so that there is a gap between the cut surface and the friction pad, so that the paper feed shaft and the friction pad do not contact when the paper feed shaft is stationary, avoiding the friction force from affecting the reset of the support frame, thereby increasing the reset speed of the support frame and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the printing machine of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of the scanning part of the printing machine of the present invention.

[0030] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of area A in the middle.

[0031] Figure 4 It is a schematic diagram of the structure of installing a scanning platform on a bottom beam of the present invention.

[0032] Figure 5 It is an exploded view of the scanning platform of the present invention.

[0033] Figure 6 It is a structural schematic diagram of the paper feed shaft and the support frame of the present invention.

[0034] Figure 7 It is a cross-sectional view of the paper feed shaft of the present invention when it is stationary.

[0035] Figure 8 It is a cross-sectional view of the paper feed shaft of the present invention when it rotates.

[0036] Fig. 9 It is a structural schematic diagram of the crossbeam of the present invention.

[0037] Fig.10 It is a schematic structural diagram of the inkjet cartridge of the present invention.

[0038] Fig.11 For the present invention Fig.10 Schematic diagram of the structure of area B in the middle.

[0039] In the figure: 1, frame; 2, scanning platform; 3, beam; 4, inkjet cartridge;

[0040] 11. Bottom beam; 12. Support legs; 13. Power box; 14. Control panel;

[0041] 21. U-shaped cavity; 22. Upper plate; 23. Suction fan; 24. Paper feed shaft; 25. No. 1 motor; 26. In-position detector; 27. Support frame; 28. Lower plate; 29. ​​Movable slot;

[0042] 241, shaft groove; 242, section; 271, arc-shaped protrusion; 272, friction pad; 291, side plate; 292, return spring;

[0043] 31. Synchronous belt; 32. No. 2 motor; 33. Pressure wheel shaft; 34. Pressure wheel;

[0044] 41. Fixed pressure plate; 42. Movable pressure plate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] Embodiment 1:

[0049] This embodiment provides a scanning textile digital printing machine with the following technical features.

[0050] See also Figure 1-11 A scanning textile digital printing machine comprises a frame 1, the frame 1 comprises a bottom beam 11 and a support leg 12, a scanning platform 2 is mounted on the bottom beam 11, a crossbeam 3 is arranged above the scanning platform 2, an inkjet cartridge 4 is slidably connected to the crossbeam 3, a paper feed shaft 24 is arranged in the scanning platform 2, a pressure wheel 34 is arranged at the bottom of the crossbeam 3, a roller which is supported on the top of the paper feed shaft 24 is arranged at the bottom end of the pressure wheel 34, a material passes between the paper feed shaft 24 and the pressure wheel 34, and the friction force of the paper feed shaft 24 is used to drive the material forward, and the scanning platform 2 also comprises:

[0051] The U-shaped cavity 21 is fixed above the bottom beam 11 and has a U-shaped structure, wherein the U-shaped opening faces upward;

[0052] The suction fan 23 is installed below the U-shaped cavity 21, and the air inlet of the suction fan 23 is arranged on the bottom surface of the bottom beam 11;

[0053] The upper plate 22 is fixed above the U-shaped cavity 21 , and is provided with a plurality of air suction holes connected up and down.

[0054] It is further provided that the material may be paper or textile.

[0055] Furthermore, the frame 1 is also provided with a power supply box 13, a control panel 14 and an ink storage box.

[0056] It is further provided that the bottom of the upper plate 22 is slidably connected to a lower plate 28, and the lower plate 28 is provided with a through hole corresponding to the air suction hole on the upper plate 22, and the lower plate 28 is fixed to at least one support frame 27, and the support frame 27 is slidably connected in the movable groove 29, and the movable groove 29 is provided with a return spring 292 on the rear side of the support frame 27, and the support frame 27 is provided below the paper feed shaft 24, and the support frame 27 is provided with an arc-shaped protrusion 271 on the rear side of the paper feed shaft 24 away from the upper plate 22 and the lower plate 28. A shaft groove 241 is provided on the paper feed shaft 24 at a position corresponding to the arc-shaped protrusion 271. When the paper feed shaft 24 is stationary, the arc-shaped protrusion 271 is stuck in the shaft groove 241. When the paper feed shaft 24 rotates, the outer ring position of the paper feed shaft 24 pushes the support frame 27 to retreat, thereby driving the lower plate 28 to retreat, so that the air suction hole on the upper plate 22 and the through hole on the lower plate 28 are staggered, so that when the material moves forward, the air suction hole is closed to prevent the suction force from affecting the advancement of the material, and when the material is stationary and scanned, the air permeable hole is opened to allow the material to be adsorbed on the upper surface of the upper plate 22.

[0057] It is further provided that one end of the return spring 292 is fixed to the rear side of the support frame 27 , and the other end is fixed to the U-shaped cavity 21 .

[0058] Furthermore, the scanning platform 2 is provided with an in-place detector 26 , which is an infrared sensor for detecting whether the material is in place or exhausted.

[0059] It is further provided that the support frame 27 is provided with a friction pad 272 at the bottom of the paper feed shaft 24. When the paper feed shaft 24 rotates, it contacts the friction pad 272 to generate friction force to drive the support frame 27 to retreat, so as to prevent the arc-shaped protrusion 271 from being stuck in the shaft groove 241 back and forth and generating vibration when the paper feed shaft 24 rotates. A cut surface 242 is provided at the bottom of the paper feed shaft 24 when it is stationary. The cut surface 242 is an inwardly concave groove. When the paper feed shaft 24 is stationary, there is a gap between the cut surface 242 and the friction pad 272, so as to prevent the friction force from affecting the rapid reset of the lower plate 28.

[0060] Furthermore, a plurality of shaft grooves 241 and cut surfaces 242 may be provided on one paper feeding shaft 24 .

[0061] It is further provided that the movable groove 29 includes side plates 291 on both sides, the side plates 291 are fixed on the U-shaped cavity 21 , and the support frame 27 slides between the two side plates 291 .

[0062] It is further provided that the crossbeam 3 includes a synchronous belt 31 driven by a No. 2 motor 32, a fixed pressure plate 41 and a movable pressure plate 42 are provided on the back of the inkjet cartridge 4, the fixed pressure plate 41 and the movable pressure plate 42 are fixedly connected by bolts, the synchronous belt 31 is fixed to the inkjet cartridge 4 by the fixed pressure plate 41 and the movable pressure plate 42, and the synchronous belt 31 drives the inkjet cartridge 4 to slide left and right when moving, and a grating for detecting the moving distance is also provided on the inkjet cartridge 4.

[0063] It is further provided that a pressure wheel shaft 33 is provided at the bottom of the cross beam 3, and a plurality of pressure wheels 34 distributed in an array are provided on the pressure wheel shaft 33, and each pressure wheel 34 is elastically rotatably connected to the pressure wheel shaft 33, and the roller at the bottom end of the pressure wheel 34 is used to push the material against the surface of the paper feed shaft 24, thereby increasing the friction between the paper feed shaft 24 and the material, thereby improving the printing accuracy.

[0064] It is further provided that the paper feeding shaft 24 is provided with cloth rubber layers at intervals to increase the friction between the paper feeding shaft 24 and the material.

[0065] Further, one end of the paper feed shaft 24 is connected to the first motor 25 through a belt or gear transmission, and the first motor 25 rotates to drive the paper feed shaft 24 to rotate. The axial direction of the paper feed shaft 24 is parallel to the sliding direction of the inkjet cartridge 4.

[0066] Specifically, pulleys are respectively provided on the output shaft of the No. 1 motor 25 and the end of the U-shaped cavity 21, and the two pulleys are connected by belt transmission.

[0067] Similarly, pulleys are provided at the output shaft 32 and the end of the U-shaped cavity 21, respectively, and the two pulleys are connected via a belt transmission.

[0068] It is further provided that a liftable support plate is arranged between the bottom of the U-shaped cavity 21 and the bottom beam 11 , each suction fan 23 is arranged in a gap between two adjacent support plates, and an air outlet of the suction fan 23 is arranged on a side away from the U-shaped cavity 21 .

[0069] Working principle: when the paper feed shaft 24 is stationary, the arc-shaped protrusion 271 is stuck in the shaft groove 241, and the lower plate 28 slides to the front side of the upper plate 22 at this time, and the air suction holes on the upper plate 22 correspond to the through holes on the lower plate 28 one by one, that is, the air suction holes on the upper plate 22 are in an open state at this time, and the paper feed shaft 24 is stationary, that is, the material is stationary, that is, when the printing machine is scanning and inkjet, the suction holes are opened to generate suction, which can make the material more flat on the upper surface of the upper plate 22, thereby improving the scanning quality; when the paper feed shaft 24 rotates, that is, when the material moves forward, that is, after the inkjet cartridge 4 completes the previous scan, when the paper feed shaft 24 just starts to rotate, it will use the arc of the edge of the shaft groove 241 to push the support frame 27 backwards, and after the paper feed shaft 24 rotates a certain angle, the bottom outer ring will contact the friction pad 27 2. The friction force generated will provide a backward force to the support frame 27. At this time, when the paper feed shaft 24 rotates to the position where the shaft groove 241 passes the arc-shaped protrusion 271, the friction force generated by the friction pad 272 will prevent the arc-shaped protrusion 271 from quickly hitting the shaft groove 241, thereby avoiding the collision between the arc-shaped protrusion 271 and the paper feed shaft 24, thereby improving the stability of the device. When the paper feed shaft 24 stops, the arc-shaped protrusion 271 is directly opposite to the shaft groove 241. At this time, the bottom of the paper feed shaft 24 is the cut surface 242, which is an inward cut groove and does not contact the friction pad 272, so that no friction force is generated, so that the support frame 27 can be quickly reset. Because the area of ​​the cut surface 242 is small, it will only briefly pass through the friction pad 272 during the rotation process, and the support frame 27 will not quickly move forward and collide with the paper feed shaft 24.

[0070] In summary, the scanning textile digital printing machine is configured by arranging a suction fan 23 below the U-shaped cavity 21, the air inlet of the suction fan 23 is arranged at the bottom of the U-shaped cavity 21, and then an upper plate 22 is arranged above the U-shaped cavity 21, and an air suction hole connected up and down is arranged on the upper plate 22. The suction fan 23 generates suction force, and the air suction holes on the upper plate 22 are used to make the material passing through the upper surface of the upper plate 22 fit tightly on the upper plate 22, thereby improving the scanning flatness.

[0071] The scanning textile digital printing machine is provided with a lower plate 28 which is slidably connected under the upper plate 22, and a through hole corresponding to the air suction hole on the upper plate 22 is provided on the lower plate 28, and then the lower plate 28 is fixed on the support frame 27, and the support frame 27 is provided with an arc-shaped protrusion 271 on the rear side corresponding to the paper feed shaft 24, and when the paper feed shaft 24 is stationary, the arc-shaped protrusion 271 is stuck in the shaft groove 241 on the paper feed shaft 24, and at this time, the through hole on the lower plate 28 corresponds to the air permeable hole on the upper plate 22 one by one, so that when the material is scanned in a stationary state, the air suction hole on the upper plate 22 is used to generate suction to improve the flatness, and when the paper feed shaft 24 rotates, that is, when the material moves forward, the arc-shaped protrusion 271 presses on the outer ring position of the paper feed shaft 24, so that the support frame 27 moves backward, thereby driving the lower plate 28 to retreat, so that the air suction hole on the upper plate 22 is staggered with the through hole on the lower plate 28, and the air suction hole is closed to prevent the suction from affecting the advancement of the material.

[0072] The scanning textile digital printing machine arranges a friction pad 272 on the support frame 27 so that when the paper feed shaft 24 rotates, the friction force is used to assist the support frame 27 to retreat. Therefore, each time the arc-shaped protrusion 271 rotates to align with the cut surface 242, the arc-shaped protrusion 271 will not be completely stuck in the shaft groove 241, thereby reducing the collision between the paper feed shaft 24 and the arc-shaped protrusion 271, thereby improving the stability of the device.

[0073] The scanning textile digital printing machine sets a cut surface 242 at the bottom when the paper feed shaft 24 is in a stationary state, so that there is a gap between the cut surface 242 and the friction pad 272, so that the paper feed shaft 24 and the friction pad 272 do not contact each other when the paper feed shaft 24 is in a stationary state, thereby avoiding the friction force from affecting the reset of the support frame 27, thereby improving the reset speed of the support frame 27 and improving production efficiency.

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scanning textile digital printing machine, comprising a frame (1), the frame (1) comprising a bottom beam (11) and a support leg (12), a scanning platform (2) being mounted on the bottom beam (11), a cross beam (3) being arranged on the frame (1) above the scanning platform (2), an inkjet cartridge (4) being slidably connected to the cross beam (3), a paper feed shaft (24) being arranged inside the scanning platform (2), a pressure wheel (34) being arranged at the bottom of the cross beam (3), a roller being arranged at the bottom end of the pressure wheel (34) and being supported on the paper feed shaft (24), characterized in that: The scanning platform (2) further comprises: The U-shaped cavity (21) is fixed above the bottom beam (11) and has a U-shaped structure, wherein the U-shaped opening faces upward; A suction fan (23) is installed below the U-shaped cavity (21), and an air inlet of the suction fan (23) is arranged on the bottom surface of the bottom beam (11); An upper plate (22) is fixed above the U-shaped cavity (21), and a plurality of air suction holes communicating with each other from top to bottom are provided on the upper plate (22); The bottom of the upper plate (22) is slidably connected to a lower plate (28), the lower plate (28) is provided with a through hole corresponding to the air suction hole on the upper plate (22), the lower plate (28) is fixed to at least one support frame (27), the support frame (27) is slidably connected in a movable groove (29), the movable groove (29) is provided with a return spring (292) at the rear side of the support frame (27), the support frame (27) is arranged below the paper feed shaft (24), the support frame (27) is provided with an arc-shaped protrusion (271) at the rear side of the paper feed shaft (24) away from the upper plate (22) and the lower plate (28), and an axis groove (241) is provided on the paper feed shaft (24) at a position corresponding to the arc-shaped protrusion (271), and the arc-shaped protrusion (271) is stuck in the axis groove (241) when the paper feed shaft (24) is stationary.

2. A scanning textile digital printing machine according to claim 1, characterized in that: The support frame (27) is further provided with a friction pad (272) at the bottom of the paper feed shaft (24). When the paper feed shaft (24) rotates, the friction pad (272) contacts the support frame (27) to generate friction force to drive the support frame (27) backward, thereby preventing the arc-shaped protrusion (271) from being stuck back and forth in the shaft groove (241) and generating vibration when the paper feed shaft (24) rotates. When the paper feed shaft (24) is stationary, a cut surface (242) is provided at the bottom end. The cut surface (242) is an inwardly concave groove. When the paper feed shaft (24) is stationary, a gap exists between the cut surface (242) and the friction pad (272).

3. A scanning textile digital printing machine according to claim 1, characterized in that: The movable groove (29) comprises side plates (291) on both sides, the side plates (291) are fixed on the U-shaped cavity (21), and the support frame (27) slides between the two side plates (291).

4. A scanning textile digital printing machine according to claim 1, characterized in that: The crossbeam (3) comprises a synchronous belt (31) driven by a second motor (32); a fixed pressing plate (41) and a movable pressing plate (42) are provided on the back of the inkjet cartridge (4); the fixed pressing plate (41) and the movable pressing plate (42) are fixedly connected by bolts; the synchronous belt (31) is fixed to the inkjet cartridge (4) by the fixed pressing plate (41) and the movable pressing plate (42); when the synchronous belt (31) moves, it drives the inkjet cartridge (4) to slide left and right; and a grating for detecting the moving distance is also provided on the inkjet cartridge (4).

5. A scanning textile digital printing machine according to claim 4, characterized in that: A pressure wheel shaft (33) is provided at the bottom of the crossbeam (3), and a plurality of pressure wheels (34) distributed in an array are provided on the pressure wheel shaft (33). Each pressure wheel (34) is elastically rotatably connected to the pressure wheel shaft (33), and a roller at the bottom end of the pressure wheel (34) is used to push the material against the surface of the paper feed shaft (24), thereby increasing the friction between the paper feed shaft (24) and the material.

6. The scanning textile digital printing machine according to claim 1, characterized in that: Cloth adhesive layers are arranged at intervals on the paper feeding shaft (24).

7. The scanning textile digital printing machine according to claim 1, characterized in that: One end of the paper feed shaft (24) is connected to a first motor (25) via a belt or gear transmission, and the first motor (25) rotates to drive the paper feed shaft (24) to rotate. The axial direction of the paper feed shaft (24) is parallel to the sliding direction of the inkjet cartridge (4).

8. The scanning textile digital printing machine according to claim 1, characterized in that: A liftable support plate is arranged between the bottom of the U-shaped cavity (21) and the bottom beam (11), each suction fan (23) is arranged in a gap between two adjacent support plates, and an air outlet of the suction fan (23) is arranged on a side away from the U-shaped cavity (21).

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