Three-dimensional digital printing equipment and printing process

Abstract

The invention provides three-dimensional digital printing equipment and a printing process, and relates to the technical field of digital printing. The three-dimensional digital printing equipment comprises a U-shaped mounting frame, two rotary mounting shafts are rotationally connected to the inner wall of the U-shaped mounting frame, and three belt wheels are fixedly connected to the outer surface of each rotary mounting shaft. According to the printing device, the induced draft fan is started, air around the dryer is extracted through the air draft effect of the induced draft fan, hot air enters the first fixing pipeline through the multiple air inducing branch pipes, then enters the second fixing pipeline and finally is sprayed out through the multiple air blowing branch pipes, the non-printed fabric is preheated, the non-printed fabric is preliminarily heated, and the printing effect of the non-printed fabric is improved. After printing, the surface temperature of the fabric is higher than that when preheating is not carried out, rapid drying of the fabric is facilitated, a traditional air blowing effect is changed into an air suction effect, airflow flowing is gentle, it is avoided that strong airflow is directly blown to the printing position of the fabric, and the printing quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital printing, in particular to a three-dimensional digital printing equipment and printing process. BACKGROUND

[0002] Inkjet printing technology is a new printing method, which abandons the complex process of traditional printing plate making, directly prints on fabric, improves the printing accuracy, realizes small batch, multi-variety, multi-color printing, and solves the problems of large occupation area and serious pollution in traditional printing, thus having broad development prospects.

[0003] Patent publication number CN222372551U relates to the technical field of digital inkjet printing, and discloses a three-dimensional digital printing equipment, which comprises a drying bin, the front and rear surfaces of the drying bin are provided with connecting grooves communicating with the inside thereof, the upper surface of the drying bin is fixedly connected with a positioning box, the positioning box is hollow, the upper surface of the drying bin is provided with a support groove communicating with the inside thereof, the positioning box and the drying bin are internally communicated through the support groove, the support groove is located in the positioning box, an acceleration mechanism is arranged on the drying bin, a threaded rod is rotatably connected between the inner walls of the front and rear sides of the positioning box, the front end of the threaded rod rotatably penetrates out of the front surface of the positioning box, the three-dimensional digital printing equipment, the second motor drives the nozzle to swing around the rotating pipe every time it rotates one circle, thereby making the air circulation more intense, the air convection is better, thereby improving the drying effect on the product, increasing the efficiency of three-dimensional digital printing, and thereby increasing the practicality of the equipment.

[0004] However, in the above-mentioned patent, the printed products are sent into the inside of the drying bin for blowing, and the surface of the product is blown strongly before drying, which can easily cause the ink marks on the surface of the product to spread, affecting the printing quality. SUMMARY

[0005] The technical problem solved by the present application is that the present application provides a three-dimensional digital printing equipment and printing process, which solves the problem of strong blowing on the surface of the product before drying in the prior art, which can easily cause the ink marks on the surface of the product to spread, affecting the printing quality.

[0006] Technical solution: To achieve the above object, the application is realized by the following technical scheme: a three-dimensional digital printing equipment, comprising a U-shaped mounting frame, the inner wall of the U-shaped mounting frame is rotatably connected with two rotating mounting shafts, the outer surface of each rotating mounting shaft is fixedly connected with three belt pulleys, a conveying belt is transmissionally connected between two belt pulleys, the top of the U-shaped mounting frame is fixedly connected with a connecting fixed frame, the inner top of the connecting fixed frame is fixedly connected with a plurality of dryers, the top of the connecting fixed frame is connected with a cooling assembly, one side of the U-shaped mounting frame is fixedly connected with two first connecting strip plates, a winding assembly is connected between two first connecting strip plates, the front and rear sides of the U-shaped mounting frame are fixedly connected with second connecting strip plates, a digital printing mechanism is connected between two second connecting strip plates, one side of the inner wall of the U-shaped mounting frame is rotatably connected with a first mounting pipeline, the outer surface of the first mounting pipeline is fixedly connected with a plurality of air guide branch pipes, the other side of the inner wall of the U-shaped mounting frame is fixedly connected with a second mounting pipeline, the outer surface of the second mounting pipeline is fixedly connected with a plurality of air blowing branch pipes, an air guide assembly is connected between the first mounting pipeline and the second mounting pipeline, the rear side of the U-shaped mounting frame is connected with a power assembly for driving the first mounting pipeline to rotate.

[0007] Preferably, the front side of the U-shaped mounting frame is fixedly connected with a first servo motor, and the output shaft of the first servo motor is fixedly connected with one of the rotating mounting shafts.

[0008] Preferably, the cooling assembly comprises an air cooler fixedly connected to the top of the connecting fixed frame, the outlet of the air cooler is fixedly connected with a first air cooler pipe, the end of the first air cooler pipe away from the air cooler is fixedly connected with a second air cooler pipe, the side of the second air cooler pipe away from the first air cooler pipe is fixedly connected with an air cooler branch pipe, and a plurality of air cooler branch pipes are directed towards the winding assembly; the air cooler is started, the cold air blown by the air cooler enters the second air cooler pipe through the first air cooler pipe, and then the cold air is blown to the winding roller through a plurality of air cooler branch pipes to cool the fabric.

[0009] Preferably, the digital printing mechanism comprises a top fixed plate fixedly connected between two second connecting strip plates, the top of the top fixed plate is fixedly connected with two drive cylinders, the piston ends of the two drive cylinders are fixedly connected with a fixed plate, and the lower surface of the fixed plate is fixedly installed with a digital printer; the two drive cylinders are started, the piston ends of the two drive cylinders move with the fixed plate, the fixed plate moves with the digital printer, and the height of the digital printer is changed.

[0010] Preferably, the winding assembly comprises a movable shaft rotatably connected between two first connecting plates, an outer surface of the movable shaft is fixedly connected with a winding roller shaft, a side wall of one of the first connecting plates is fixedly connected with a second servo motor, an output shaft of the second servo motor is fixedly connected with one end of the winding roller shaft, and the second servo motor is started to rotate the winding roller shaft with the output shaft.

[0011] Preferably, the air guiding assembly comprises an air blower fixedly connected with a side wall of the U-shaped mounting rack, an inlet of the air blower is fixedly connected with a first fixed pipe, one end of the first fixed pipe away from the air blower is rotatably connected with an end of the first mounting pipe, an outlet of the air blower is fixedly connected with a second fixed pipe, and one end of the second fixed pipe away from the air blower is fixedly connected with the second mounting pipe.

[0012] Preferably, the power assembly comprises a sector gear rotatably connected with a side wall of the U-shaped mounting rack, the end of the first mounting pipe is fixedly connected with a rotating gear, the rotating gear is engaged with the sector gear, one side of the sector gear is fixedly connected with an oscillating connecting strip, a side wall of the U-shaped mounting rack is fixedly connected with a third servo motor, an output shaft of the third servo motor is fixedly connected with a rotating mounting disc, a driving protruding rod is connected with an eccentric portion of the rotating mounting disc, and an active slot is formed in a side wall of the oscillating connecting strip, the driving protruding rod is arranged in the active slot, the third servo motor is started to rotate the rotating mounting disc, the rotating mounting disc rotates the driving protruding rod, the oscillating connecting strip oscillates the sector gear, and the rotating gear reciprocatingly rotates in a forward and reverse direction, so that the first mounting pipe reciprocatingly rotates the plurality of air guiding branch pipes in a forward and reverse direction.

[0013] Preferably, two first guide rollers are movably connected between the two first connecting plates, and three second guide rollers are movably connected with an inner wall of the U-shaped mounting rack.

[0014] A printing process of a three-dimensional digital printing equipment, the printing process comprising the following steps: S1, the fabric is wound around the three second guide rollers from right to left, then passes through the surface of the conveying belt, then passes through the two first guide rollers, and finally is wound around the outer surface of the winding roller shaft; S2, when the fabric passes through the digital printer, the digital printer is started to print on the surface of the fabric, the two drive cylinders are started, the piston end of the two drive cylinders moves with the fixed plate, the fixed plate moves with the digital printer, and the height of the digital printer is changed. S3, start multiple dryers to dry the printed fabric, at the same time, start the air blower, through the air extraction effect of the air blower, the air around the dryer is extracted, the hot air enters the first fixed pipe through multiple air blower branch pipes, then enters the second fixed pipe, and finally is sprayed out through multiple air blowing branch pipes to preheat the unprinted fabric, when the multiple air blower branch pipes inhale, the third servo motor is started, the third servo motor rotates with the rotating mounting disc, the rotating mounting disc rotates with the driving convex rod, the swing connecting strip swings with the fan-shaped gear, so that the rotating gear rotates back and forth, and the first mounting pipe rotates back and forth with the multiple air blower branch pipes; S4, start the second servo motor, the output shaft of the second servo motor rotates with the winding roller shaft, so that the winding roller shaft is wound, at the same time, start the cold air blower, the cold air blown by the cold air blower enters the second cold air pipe through the first cold air pipe, then the cold air is blown to the winding roller shaft through multiple cold air branch pipes, and the fabric is cooled.

[0015] Beneficial effects: the application provides a three-dimensional digital printing equipment and a printing process. The application starts the air blower, extracts the air around the dryer through the air extraction effect of the air blower, the hot air enters the first fixed pipe through multiple air blower branch pipes, then enters the second fixed pipe, and finally is sprayed out through multiple air blowing branch pipes to preheat the unprinted fabric, so that the unprinted fabric is preliminarily heated, after printing, the surface temperature of the fabric is higher than that without preheating, which is beneficial to the rapid drying of the fabric, and the traditional air blowing function is changed to air suction function, the airflow is relatively soft, direct blowing of strong airflow to the printing place of the fabric is avoided, and the printing quality is improved.

[0016] The application starts the third servo motor, the third servo motor rotates with the rotating mounting disc, the rotating mounting disc rotates with the driving convex rod, the swing connecting strip swings with the fan-shaped gear, so that the rotating gear rotates back and forth, and the first mounting pipe rotates back and forth with the multiple air blower branch pipes, and the hot air extraction effect is better.

[0017] The application starts the second servo motor, the output shaft of the second servo motor rotates with the winding roller shaft, so that the winding roller shaft is wound, at the same time, start the cold air blower, the cold air blown by the cold air blower enters the second cold air pipe through the first cold air pipe, then the cold air is blown to the winding roller shaft through multiple cold air branch pipes, and the fabric is cooled, without subsequent cooling treatment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A first perspective three-dimensional structure schematic view of the three-dimensional digital printing equipment is provided. Figure 2A second perspective view of a three-dimensional digital printing equipment according to the present application is provided; Figure 3 A top view of a three-dimensional digital printing equipment according to the present application is provided; Figure 4 A sectional view of a three-dimensional digital printing equipment according to the present application is provided; Figure 5 A perspective view of a three-dimensional digital printing equipment according to the present application is provided; Figure 1 An enlarged view of position A in the perspective view; Figure 6 An enlarged view of position B in the perspective view; Figure 2

[0019] Wherein, 1, U-shaped mounting bracket; 2, rotating mounting shaft; 3, conveying belt; 4, first servo motor; 5, connecting fixed frame; 6, air cooler; 7, second cold air pipe; 8, cold air branch pipe; 9, first connecting strip plate; 10, winding roller shaft; 11, second servo motor; 12, first guide roller; 13, second connecting strip plate; 14, top fixed plate; 15, drive cylinder; 16, digital printing machine; 17, first mounting pipeline; 18, air inlet branch pipe; 19, air inlet fan; 20, first fixed pipeline; 21, second fixed pipeline; 22, second mounting pipeline; 23, air blowing branch pipe; 24, second guide roller; 25, rotating gear; 26, sector gear; 27, swing connecting strip; 28, third servo motor; 29, rotating mounting disc; 30, drive protruding rod; 31, dryer. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application. EMBODIMENT

[0021] As shown in the drawings, Figures 1-6 The embodiment of the present application provides a three-dimensional digital printing equipment, which comprises a U-shaped mounting bracket 1, two rotating mounting shafts 2 are rotationally connected to the inner wall of the U-shaped mounting bracket 1, a first servo motor 4 is fixedly connected to the front side of the U-shaped mounting bracket 1, the output shaft of the first servo motor 4 is fixedly connected with one of the rotating mounting shafts 2, three belt pulleys are fixedly connected to the outer surface of each rotating mounting shaft 2, a conveying belt 3 is transmissionally connected between two belt pulleys, a connecting fixed frame 5 is fixedly connected to the top of the U-shaped mounting bracket 1, a plurality of dryers 31 are fixedly connected to the inner top of the connecting fixed frame 5; ​The top of the connecting fixing frame 5 is connected with a cooling assembly, which comprises a cooling fan 6 fixedly connected to the top of the connecting fixing frame 5, a first cooling pipe fixedly connected to the outlet of the cooling fan 6, a second cooling pipe 7 fixedly connected to the end of the first cooling pipe away from the cooling fan 6, and a plurality of cooling branch pipes 8 fixedly connected to the side of the second cooling pipe 7 away from the first cooling pipe, the plurality of cooling branch pipes 8 being directed towards the winding assembly; the cooling fan 6 is started, and the cooling fan 6 blows cold air into the second cooling pipe 7 through the first cooling pipe, and then blows the cold air towards the winding roller shaft 10 through the plurality of cooling branch pipes 8 to cool the fabric; One side of the U-shaped mounting frame 1 is fixedly connected with two first connecting strip plates 9, the winding assembly is connected between the two first connecting strip plates 9, and the winding assembly comprises a movable shaft rotatably connected between the two first connecting strip plates 9, the outer surface of the movable shaft is fixedly connected with the winding roller shaft 10, the sidewall of one of the first connecting strip plates 9 is fixedly connected with a second servo motor 11, the output shaft of the second servo motor 11 is fixedly connected with one end of the winding roller shaft 10, two first guide rollers 12 are movably connected between the two first connecting strip plates 9, and the inner wall of the U-shaped mounting frame 1 is movably connected with three second guide rollers 24; the second servo motor 11 is started, the output shaft of the second servo motor 11 rotates with the winding roller shaft 10, and the winding roller shaft 10 is wound; The front and back sides of the U-shaped mounting frame 1 are fixedly connected with second connecting strip plates 13, and the digital printing mechanism is connected between the two second connecting strip plates 13, the digital printing mechanism comprises a top fixed plate 14 fixedly connected between the two second connecting strip plates 13, the top of the top fixed plate 14 is fixedly connected with two drive cylinders 15, the piston ends of the two drive cylinders 15 are fixedly connected with a fixed plate, and the lower surface of the fixed plate is fixedly installed with a digital printer 16; The inner wall of the U-shaped mounting frame 1 is rotatably connected with a first mounting pipe 17, the outer surface of the first mounting pipe 17 is fixedly connected with a plurality of air guide branch pipes 18, the inner wall of the U-shaped mounting frame 1 is fixedly connected with a second mounting pipe 22, the outer surface of the second mounting pipe 22 is fixedly connected with a plurality of air blowing branch pipes 23, and the air guide assembly is connected between the first mounting pipe 17 and the second mounting pipe 22; the air guide assembly comprises an air guide fan 19 fixedly connected to the sidewall of the U-shaped mounting frame 1, a first fixed pipe 20 fixedly connected to the inlet of the air guide fan 19, the end of the first fixed pipe 20 away from the air guide fan 19 being rotatably connected with the end portion of the first mounting pipe 17, a second fixed pipe 21 fixedly connected to the outlet of the air guide fan 19, and the end of the second fixed pipe 21 away from the air guide fan 19 being fixedly connected with the second mounting pipe 22; The rear side of the U-shaped mounting frame 1 is connected with a power assembly for driving the first mounting pipeline 17 to rotate, the power assembly comprises a sector gear 26 which is rotatably connected to the side wall of the U-shaped mounting frame 1, the end of the first mounting pipeline 17 is fixedly connected with a rotating gear 25, the rotating gear 25 is engaged with the sector gear 26, one side of the sector gear 26 is fixedly connected with an oscillating connecting strip 27, the side wall of the U-shaped mounting frame 1 is fixedly connected with a third servo motor 28, the output shaft of the third servo motor 28 is fixedly connected with a rotating mounting disc 29, the eccentric position of the rotating mounting disc 29 is connected with a driving protruding rod 30, the side wall of the oscillating connecting strip 27 is provided with an movable slot, and the driving protruding rod 30 is arranged in the movable slot.

[0022] A printing process of a three-dimensional digital printing equipment, the printing process comprises the following steps: S1, the fabric is sequentially wound around three second guide rollers 24 from the right side, then passes through the surface of the conveying belt 3, and then passes through two first guide rollers 12 and is finally wound on the outer surface of the winding roller shaft 10; S2, when the fabric passes through the digital printing machine 16, the digital printing machine 16 is started to print on the surface of the fabric, two drive cylinders 15 are started, the piston end of the two drive cylinders 15 moves with the fixed plate, the fixed plate moves with the digital printing machine 16, and the height of the digital printing machine 16 is changed; S3, a plurality of dryers 31 are started to dry the printed fabric, at the same time, the air blower 19 is started, the air blower 19 is used to extract the air around the dryer 31, the hot air enters the first fixed pipeline 20 and then enters the second fixed pipeline 21 through a plurality of air blower branch pipes 18, and finally is sprayed out through a plurality of air blowing branch pipes 23 to preheat the unprinted fabric, when the plurality of air blower branch pipes 18 inhale, the third servo motor 28 is started, the third servo motor 28 rotates with the rotating mounting disc 29, the rotating mounting disc 29 rotates with the driving protruding rod 30, the oscillating connecting strip 27 oscillates with the sector gear 26, so that the rotating gear 25 reciprocatingly rotates in opposite directions, and the first mounting pipeline 17 reciprocatingly rotates in opposite directions with the plurality of air blower branch pipes 18; S4, the second servo motor 11 is started, the output shaft of the second servo motor 11 rotates with the winding roller shaft 10, so that the winding roller shaft 10 is wound, at the same time, the air cooler 6 is started, the cold air blown out by the air cooler 6 enters the second cold air pipe 7 through the first cold air pipe, and then the cold air is blown to the winding roller shaft 10 through a plurality of cold air branch pipes 8 to cool the fabric.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the statement "comprising a reference structure" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0024] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional digital printing device, comprising a U-shaped mounting frame (1), characterized in that: The inner wall of the U-shaped mounting frame (1) is rotatably connected to two rotating mounting shafts (2), the outer surface of each rotating mounting shaft (2) is fixedly connected to three pulleys, and a conveying belt (3) is connected between the two pulleys. The top of the U-shaped mounting frame (1) is fixedly connected to a connecting fixing frame (5), the inner top of the connecting fixing frame (5) is fixedly connected to a plurality of dryers (31), the top of the connecting fixing frame (5) is connected to a cooling assembly, one side of the U-shaped mounting frame (1) is fixedly connected to two first connecting strips (9), a winding assembly is connected between the two first connecting strips (9), and the front and rear sides of the U-shaped mounting frame (1) are fixedly connected to the second A connecting strip (13), a digital printing mechanism is connected between the two second connecting strips (13), a first installation pipe (17) is rotatably connected to one side of the inner wall of the U-shaped mounting frame (1), a plurality of air induced branch pipes (18) are fixedly connected to the outer surface of the first installation pipe (17), a second installation pipe (22) is fixedly connected to the other side of the inner wall of the U-shaped mounting frame (1), a plurality of air blowing branch pipes (23) are fixedly connected to the outer surface of the second installation pipe (22), an air induced component is connected between the first installation pipe (17) and the second installation pipe (22), and a power component for driving the first installation pipe (17) to rotate is connected to the rear side of the U-shaped mounting frame (1).

2. The three-dimensional digital printing device according to claim 1, characterized in that: A first servo motor (4) is fixedly connected to the front side of the U-shaped mounting frame (1), and an output shaft of the first servo motor (4) is fixedly connected to one of the rotating mounting shafts (2).

3. The three-dimensional digital printing device according to claim 1, characterized in that: The cooling assembly comprises an air cooler (6) fixedly connected to the top of the connecting and fixing frame (5); the outlet of the air cooler (6) is fixedly connected to a first cold air duct; the end of the first cold air duct away from the air cooler (6) is fixedly connected to a second cold air duct (7); the side of the second cold air duct (7) away from the first cold air duct is fixedly connected to a cold air branch pipe (8); and a plurality of the cold air branch pipes (8) face the winding assembly.

4. The three-dimensional digital printing device according to claim 1, characterized in that: The digital printing mechanism comprises a top fixing plate (14) fixedly connected between two second connecting strips (13), two driving cylinders (15) are fixedly connected to the top of the top fixing plate (14), the piston ends of the two driving cylinders (15) are fixedly connected to the fixing plate, and a digital printing machine (16) is fixedly mounted on the lower surface of the fixing plate.

5. The three-dimensional digital printing device according to claim 1, characterized in that: The winding assembly comprises a movable shaft rotatably connected between two first connecting strips (9), the outer surface of the movable shaft is fixedly connected to a winding roller shaft (10), a second servo motor (11) is fixedly connected to the side wall of one of the first connecting strips (9), and the output shaft of the second servo motor (11) is fixedly connected to one end of the winding roller shaft (10).

6. The three-dimensional digital printing device according to claim 1, characterized in that: The induced draft assembly includes an induced draft fan (19) fixedly connected to a side wall of a U-shaped mounting frame (1); an inlet of the induced draft fan (19) is fixedly connected to a first fixed pipe (20); an end of the first fixed pipe (20) away from the induced draft fan (19) is rotatably connected to an end of a first mounting pipe (17); an outlet of the induced draft fan (19) is fixedly connected to a second fixed pipe (21); an end of the second fixed pipe (21) away from the induced draft fan (19) is fixedly connected to a second mounting pipe (22).

7. The three-dimensional digital printing device according to claim 1, characterized in that: The power assembly includes a sector gear (26) rotatably connected to the side wall of the U-shaped mounting frame (1), the end of the first mounting pipe (17) is fixedly connected to a rotating gear (25), the rotating gear (25) is meshed with the sector gear (26), one side of the sector gear (26) is fixedly connected to a swing connecting bar (27), a third servo motor (28) is fixedly connected to the side wall of the U-shaped mounting frame (1), the output shaft of the third servo motor (28) is fixedly connected to a rotating mounting disk (29), the eccentric portion of the rotating mounting disk (29) is connected to a driving protrusion (30), a movable groove is formed through the side wall of the swing connecting bar (27), and the driving protrusion (30) is arranged inside the movable groove.

8. The three-dimensional digital printing device according to claim 1, characterized in that: Two first guide rollers (12) are movably connected between the two first connecting strips (9), and three second guide rollers (24) are movably connected to the inner wall of the U-shaped mounting frame (1).

9. A 3D digital printing process, applied to the 3D digital printing device according to claim 1, characterized in that: The printing process comprises the following steps: S1, passing the fabric from the right side around the three second guide rollers (24) in sequence, then passing through the surface of the conveyor belt (3), then passing through the two first guide rollers (12), and finally winding around the outer surface of the winding roller shaft (10); S2, when the fabric passes through the digital printing machine (16), the digital printing machine (16) is started to print on the surface of the fabric, and the two driving cylinders (15) are started. The piston ends of the two driving cylinders (15) move with the fixed plate, and the fixed plate moves with the digital printing machine (16), thereby changing the height of the digital printing machine (16); S3, start the plurality of dryers (31) to dry the printed fabrics, and at the same time, start the induced draft fan (19), and through the exhaust action of the induced draft fan (19), extract the air around the dryer (31), and the hot air enters the first fixed pipe (20) through the plurality of induced draft branch pipes (18), and then enters the second fixed pipe (21), and finally is ejected through the plurality of blowing branch pipes (23) to preheat the unprinted fabrics. When the plurality of induced draft branch pipes (18) are sucking air, start the third servo motor (28), and the third servo motor (28) drives the rotating mounting plate (29) to rotate, so that the rotating mounting plate (29) drives the driving protruding rod (30) to rotate, so that the swing connecting bar (27) drives the fan gear (26) to swing, thereby causing the rotating gear (25) to rotate back and forth, so that the first mounting pipe (17) drives the plurality of induced draft branch pipes (18) to rotate back and forth; S4, start the second servo motor (11), the output shaft of the second servo motor (11) rotates the winding roller (10), so that the winding roller (10) is wound, and at the same time, start the air cooler (6), the cold air blown out by the air cooler (6) enters the second cold air pipe (7) through the first cold air pipe, and then blows the cold air toward the winding roller (10) through multiple cold air branches (8), so as to cool the fabric.

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