Digital printing machine and printing process for textile fabric

Abstract

The application relates to a digital printing machine for textile cloth and a printing process, and relates to the technical field of cloth printing and dyeing.The printing machine body is provided with a winding roller which is rotationally arranged on the printing machine body; the printing machine body is provided with an adjusting device which is used for adjusting the tension of the cloth surface, and the adjusting device comprises a rotating rod, a pre-storage roller and a controller.The application pre-stores the cloth which is about to be wound by the pre-storage roller, when the cloth wound on the winding roller increases, the winding speed increases, the cloth surface tension increases, the pre-storage roller is driven to move upwards, the rotating rod is driven to rotate when the pre-storage roller moves upwards, when the pre-storage roller cannot adjust the cloth surface tension because the cloth pressed by the pre-storage roller has been completely guided, the rotating rod moves to contact the control switch on the controller, the controller controls the rotating motor to stop, so that the cloth winding work is stopped, and the probability that the cloth is torn due to the excessive surface tension in the printing process is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cloth printing and dyeing, and in particular to a digital printing machine for textile cloth and a printing process. BACKGROUND

[0002] The digital printing machine is a commonly used printing and dyeing machine in the modern printing and dyeing industry.

[0003] In the related art, reference can be made to Chinese Invention Patent CN113581915B, which discloses a digital printing machine and relates to the technical field of the printing machine, comprising a rack, a winding device, two printing devices are arranged on the rack at intervals, a reversing device is arranged on the rack and located between the two printing devices, the reversing device comprises: a reversing roller, the reversing roller is rotationally arranged on the rack; a first guide roller and a second guide roller, the first guide roller and the second guide roller are rotationally arranged on the rack and located between the reversing roller and the two printing devices, respectively. The application prints the cloth through the first printing device, then reverses the cloth through the reversing roller, then prints the second surface of the cloth through the second printing device, and finally moves the cloth to the winding device for winding, thereby reducing the probability of re-transporting the wound cloth for printing when printing both sides of the cloth, saving the time spent for printing both sides, and improving the printing efficiency of the printing machine.

[0004] In the working process of the above-mentioned digital printing machine, as the digital printing machine prints the cloth, the wound cloth on the digital printing machine also increases. Since the rotation speed of the cloth winding roller is constant, the winding speed of the cloth increases as the wound cloth on the cloth winding roller increases. However, the printing speed of the digital printing machine on the cloth is fixed. Therefore, if the rotation speed of the winding roller is not adjusted in time, the surface of the cloth will be torn due to excessive tension. SUMMARY

[0005] In order to reduce the probability of tearing the cloth due to excessive surface tension during printing, the application provides a digital printing machine for textile cloth and a printing process.

[0006] The application provides a digital printing machine for textile cloth, which adopts the following technical scheme:

[0007] A digital printing machine for textile cloth and a printing process, comprising a printing machine body, a winding roller rotationally arranged on the printing machine body, a rotating motor arranged on the printing machine body, a winding roller connected with the output shaft of the rotating motor, cloth wound on the winding roller after printing on the printing machine body, an adjusting device arranged on the printing machine body for adjusting the tension on the surface of the cloth, the adjusting device comprising:

[0008] A rotating rod, one end of the rotating rod being rotationally arranged on the rack;

[0009] a pre-storage roller, which is rotationally arranged on the end of the rotating rod away from the rotating position, and the fabric after printing is wound on the winding roller after passing the pre-storage roller from below the pre-storage roller, when the printing machine body starts printing, the pre-storage roller is at the lowest height, and when the pre-storage roller rotates to the highest height, the fabric passing the pre-storage roller is in a horizontal state;

[0010] a controller, which is arranged on the printing machine body and connected with the rotating motor, and the controller is provided with a control switch, and when the pre-storage roller rotates to the highest height, the rotating rod contacts the control switch.

[0011] By adopting the above technical scheme, the pre-storage roller stores the fabric to be wound for a period of time, when the fabric wound on the winding roller increases to accelerate the winding speed, the surface tension of the fabric increases to drive the pre-storage roller to move upwards, the pre-storage roller moving upwards drives the rotating rod to rotate, when the fabric stored by the pre-storage roller has been completely guided, the pre-storage roller cannot adjust the surface tension of the fabric, the rotating rod moves to contact the control switch on the controller, the controller controls the rotating motor to stop, so that the fabric stops winding work, and the probability of tearing of the fabric due to excessive surface tension in the printing process is reduced.

[0012] Optionally, the printing machine body is provided with a positioning mechanism for positioning the rotating rod, and the positioning mechanism comprises:

[0013] a positioning rod, which is rotationally arranged on the printing machine body, and the rotating point of the positioning rod is located at the center of the positioning rod, and one end of the positioning rod is slidingly arranged on the rotating rod along the length direction of the rotating rod;

[0014] a positioning spring, one end of which is arranged on the rack, and the other end of the positioning spring is connected with the end of the positioning rod away from the rotating rod.

[0015] By adopting the above technical scheme, the positioning rod fixes the initial position of the rotating rod under the action of the positioning spring, then the rotating rod rotates to drive the positioning rod to rotate as the position of the pre-storage roller rises, the positioning rod rotates to stretch the positioning spring, when the fabric printing is completed, the pre-storage roller falls under the action of gravity, at the same time, the positioning spring retracts to the original position and drives the positioning rod to rotate back to the original position, and the pre-storage roller also returns to the original position, so that the positioning work of the position of the pre-storage roller is completed.

[0016] Optionally, the printing machine body is provided with a fabric cutting assembly for cutting the fabric, and the fabric cutting assembly comprises:

[0017] a fabric placing plate, which is arranged on the printing machine body, and the fabric is laid on the fabric placing plate before passing the rotating rod;

[0018] The cloth cutting knife is vertically slidably arranged on the printing machine body and used for cutting the cloth on the cloth placing plate.

[0019] The limiting piece is arranged on the printing machine body and used for limiting the vertical position of the cloth cutting knife.

[0020] By adopting the above technical scheme, when the rotating motor stops driving the winding roller to stop winding the cloth, the limiting piece is unlocked, the cloth cutting knife falls onto the cloth placing plate under the action of gravity and cuts the cloth in cooperation with the cloth placing plate, so that the winding and cutting of the printed cloth are completed, manual cutting is not needed, the cutting edge is ensured to be neat, the working strength of the cloth cutting is reduced, and the working efficiency is improved.

[0021] Optionally, the limiting piece comprises:

[0022] The printing machine body is provided with a vertical sliding groove, the sliding block is slidably arranged in the sliding groove, and the cloth cutting knife is arranged on the sliding block.

[0023] The limiting plate is arranged on one end of the positioning rod connected with the positioning spring, and the other end of the limiting plate is in abutment with the lower surface of the sliding block.

[0024] By adopting the above technical scheme, as the cloth is wound, the height of the pre-storing roller is continuously increased, the height of the pre-storing roller is increased to drive the rotating rod to be raised, the rotating rod is raised to drive the positioning rod to be rotated, the positioning rod is rotated to drive the limiting plate to be moved, when one end of the positioning rod connected with the limiting plate is rotated to the lowest position, the end of the limiting plate close to the sliding block is separated from the sliding block, the sliding block falls in the sliding groove to drive the cloth cutting knife to be lowered, the cloth cutting knife is lowered to cut the cloth on the cloth placing plate, after the cutting is completed, the sliding block is moved back to the top of the sliding groove, the positioning rod is rotated back to the original position under the action of the positioning spring and drives the limiting plate to be in abutment with and supported by the lower surface of the sliding block, so that the limiting function of the cutting knife position is completed, and the cutting knife automatically cuts the cloth when the surface tension of the cloth adjusted by the pre-storing roller reaches the limit, manual attention to the state of the pre-storing roller and cutting of the cloth is not needed, and the working efficiency is greatly improved.

[0025] Optionally, a guide roller is rotatably arranged on the printing machine body between the winding roller and the pre-storing roller, the cloth winds around the guide roller after winding around the pre-storing roller and is wound onto the winding roller, and the printing machine body is provided with a rotating assembly used for driving the guide roller to rotate.

[0026] By adopting the technical scheme, the rotating assembly drives the guide roller to rotate, the guide roller drives the fabric around the pre-storage roller to be guided into the winding roller, thus the active conveying of the guide roller shares the tension required by the winding roller for winding the fabric, greatly reduces the surface tension of the fabric when the winding roller winds the fabric, and reduces the probability of tearing of the fabric due to excessive surface tension.

[0027] Optionally, the rotating assembly comprises:

[0028] The first rotating gear is arranged on the rotating motor output shaft;

[0029] The second rotating gear is arranged on the guide roller;

[0030] The rotating chain is sleeved on the first rotating gear and the second rotating gear.

[0031] By adopting the technical scheme, the rotating motor drives the winding roller to rotate and drives the first rotating gear to rotate, the first rotating gear drives the rotating chain to rotate, the rotating chain drives the second rotating gear to rotate, and the second rotating gear drives the guide roller to rotate, thus the rotation work of the guide roller is completed while the winding roller rotates.

[0032] Optionally, the printing machine body is provided with a tensioning assembly for tensioning the rotating chain, and the tensioning assembly comprises:

[0033] Two tensioning rods are rotatably arranged on the printing machine body;

[0034] Two tensioning gears are rotatably connected to the two tensioning rods and meshed with two outer sides of the rotating chain respectively;

[0035] The tensioning spring is connected to the two tensioning rods at two ends, and the two tensioning gears are always meshed with the rotating chain under the action of the tensioning spring.

[0036] By adopting the technical scheme, the tensioning spring drives the two tensioning rods to abut the two tensioning gears on the rotating chain, thus the tensioning work of the rotating chain is completed, and the probability of disengagement of the rotating chain from the first gear and the second gear after long-time work is reduced.

[0037] A second object of the present application is to provide a printing process, which comprises:

[0038] S1, removing the lint on the textile fabric to be printed, removing the lint on the surface of the fabric, and deeply cleaning the surface of the fabric;

[0039] S2, the cleaned fabric is taken out and dried, and then introduced into the printing machine body for printing treatment;

[0040] S3, the computer vision detection is automatically started in the printing process to judge whether the color is out of position, when the color is out of position, the printing work of the printing machine body is stopped and the sound and light alarm is given, when the color is normal, the normal printing work is continued, and the printed fabric is wound up;

[0041] S4, the printed textile fabric is introduced into the continuous steaming machine for steaming and color development;

[0042] S5, after steaming, the obtained textile fabric is subjected to soaping and drying treatment;

[0043] S6, the finished fabric is rolled and packaged for storage or transportation.

[0044] By adopting the above technical scheme, the lint and the like on the textile fabric are removed to make the textile fabric surface smooth and neat, then the textile fabric surface is deeply cleaned to remove the impurities adhered to the textile fabric surface, after cleaning, the textile fabric is taken out and dried, the dried fabric is introduced into the printing machine body for printing, the printing effect of the fabric is detected by computer vision detection during printing, the printed fabric is wound up and then introduced into the continuous steaming machine for steaming and color development, after steaming, the obtained textile fabric is subjected to soaping and drying treatment, and finally the finished fabric is rolled and packaged for storage or transportation.

[0045] In summary, the present application has the following at least one beneficial technical effect:

[0046] 1. The fabric to be rolled is pressed down by a pre-storage roller, when the fabric on the rolling roller increases to speed up the rolling speed, the surface tension of the fabric increases to drive the pre-storage roller to move up, the movement of the pre-storage roller drives the rotating rod to rotate, when the fabric pressed down by the pre-storage roller is completely introduced, the pre-storage roller cannot adjust the surface tension of the fabric, the rotating rod moves to contact the control switch on the controller, the controller controls the rotating motor to stop, so that the fabric stops rolling, reducing the probability of tearing of the fabric due to excessive surface tension during printing;

[0047] 2. By unlocking the limiting piece, the cutting knife falls onto the cloth placing plate under the action of gravity and cuts the fabric with the cloth placing plate, thereby completing the rolling and cutting of the printed fabric, without manual cutting, while ensuring the neat cutting edge, the work intensity of cutting the fabric is reduced, and the work efficiency is improved;

[0048] 3. The two tension gears are pressed against the rotating chain by the two tension levers driven by the tension spring, thereby completing the tensioning of the rotating chain and reducing the probability of the rotating chain disengaging from the first gear and the second gear after long time working. BRIEF DESCRIPTION OF DRAWINGS

[0049] Figure 1 is a schematic diagram of the stereoscopic structure of embodiment 1 of the present application;

[0050] Figure 2 is a schematic diagram of the stereoscopic structure of embodiment 1 of the present application; Figure 1 is an enlarged schematic diagram of A part of

[0051] Figure 3 is a schematic diagram of the structure of the rotating assembly and the tensioning assembly in the present application.

[0052] Fig. 1 is a schematic diagram of the structure of the textile digital printing machine according to the present application; Fig. 2 is a schematic diagram of the structure of the rotating assembly according to the present application; Fig. 3 is a schematic diagram of the structure of the tensioning assembly according to the present application; Fig. 4 is a schematic diagram of the structure of the positioning mechanism according to the present application; Fig. 5 is a schematic diagram of the structure of the cutting assembly according to the present application; Fig. 6 is a schematic diagram of the structure of the textile digital printing machine according to the present application. DETAILED DESCRIPTION

[0053] The following will be described in detail with reference to the accompanying drawings. Figure 1 - the accompanying drawings Figure 3 The present application will be described in further detail.

[0054] Embodiment 1 of the present application discloses a textile digital printing machine.

[0055] Reference will be made to Figure 1 The textile digital printing machine comprises a printing machine body 1, the printing machine body 1 is provided with a winding roller 11 and a rotating motor 12 connected with the winding roller 11, the winding roller 11 is used to wind the textile after printing, and the printing machine body 1 is provided with an adjusting device 2 used to adjust the tension of the textile surface.

[0056] Reference will be made to Figure 1 and Figure 2, the adjusting device 2 comprises a rotating rod 21, a pre-roller 22 and a controller 23. One end of the rotating rod 21 is rotatably arranged on the printing machine body 1. The pre-roller 22 is rotatably arranged on the end of the rotating rod 21 away from the rotating position. The pre-roller 22 presses the fabric downward for pre-rolling. When the tension of the fabric surface increases along with the winding of the fabric by the winding roller 11, the pre-roller 22 rises to adjust the tension of the fabric. The controller 23 is fixedly connected to the printing machine body 1 above the rotating rod 21 and is electrically connected with the rotating motor 12. A control switch is arranged on the lower surface of the controller 23. When the pre-roller 22 moves to the highest position, the rotating rod 21 contacts the control switch, and the controller 23 controls the rotating motor 12 to stop working.

[0057] With reference to Figure 1 and Figure 2 , the printing machine body 1 is provided with a positioning mechanism 3 for positioning the rotating rod 21. The positioning mechanism 3 comprises a positioning rod 31 and a positioning spring 32. The positioning rod 31 is rotatably arranged on the printing machine body 1, and the rotating position of the positioning rod 31 is located at the middle of the positioning rod 31. A strip-shaped hole is formed in the length direction of the rotating rod 21, and the end of the positioning rod 31 close to the rotating rod 21 is slidingly arranged in the strip-shaped hole. One end of the positioning spring 32 is fixedly connected to the printing machine body 1 above the positioning rod 31, and the other end of the positioning spring 32 is fixedly connected to the end of the positioning rod 31 away from the rotating rod 21. Under the action of the positioning rod 31, the rotating rod 21 always keeps the pre-roller 22 pressing the fabric downward without being affected by the fabric.

[0058] With reference to Figure 1 and Figure 2 , the printing machine body 1 is provided with a fabric cutting assembly 4 for cutting the fabric. The fabric cutting assembly 4 comprises a fabric placing plate 41, a fabric cutting knife 42 and a limiting piece 43. The fabric placing plate 41 is fixedly connected to the printing machine body 1 between the winding roller 11 and the pre-roller 22, and the fabric is laid on the upper surface of the fabric placing plate 41 after passing around the pre-roller 22. The fabric cutting knife 42 is vertically slidingly arranged on the printing machine body 1 above the fabric placing plate 41 through the limiting piece 43.

[0059] With reference to Figure 1 and Figure 2 , the limiting piece 43 comprises a sliding block 44 and a limiting plate 45. A vertical sliding groove 46 is formed in the side wall of the printing machine body 1 above the fabric placing plate 41. The sliding block 44 is slidingly arranged in the sliding groove 46. The fabric cutting knife 42 is fixedly connected to the sliding block 44. A driving spring 14 is fixedly connected to the top wall in the sliding groove 46, and the bottom end of the driving spring 14 is fixedly connected to the upper surface of the sliding block 44. The limiting plate 45 is fixedly connected to the end of the positioning rod 31 away from the rotating rod 21, and the upper surface of the limiting plate 45 abuts against the lower surface of the sliding block 44.

[0060] With reference to Figure 1 and Figure 2With the cloth winding, the pre-storage roller 22 rises to drive the rotating rod 21 to rotate, the rotating rod 21 drives the positioning rod 31 to rotate, the positioning rod 31 drives the limiting plate 45 to move, the limiting plate 45 drives the sliding block 44 to move downward, and when the pre-storage roller 22 moves to the highest position, the limiting plate 45 moves to the lowest position and is separated from the sliding block 44, and the sliding block 44 drives the cloth cutting knife 42 to move downward to cut the cloth on the cloth plate 41.

[0061] With reference to Figure 1 and Figure 3 , the guide roller 13 is rotatably installed on the printing machine body 1 between the winding roller 11 and the cloth plate 41, and the cloth moves out from the cloth plate 41 and is wound on the winding roller 11 to be collected after passing through the guide roller 13. The printing machine body 1 is provided with a rotating assembly 5 for driving the guide roller 13 to rotate, and the rotating assembly 5 includes a first rotating gear 51, a second rotating gear 52 and a rotating chain 53. The first rotating gear 51 is coaxially fixedly connected to the output shaft of the rotating motor 12 and is fixedly connected to the winding roller 11, and the second rotating gear 52 is fixedly connected to the rotating shaft of the guide roller 13. The rotating chain 53 is sleeved on the first rotating gear 51 and the second rotating gear 52.

[0062] With reference to Figure 1 and Figure 3 , the rotating motor 12 drives the winding roller 11 to rotate and drives the first rotating gear 51 to rotate, the first rotating gear 51 drives the rotating chain 53 to rotate, the rotating chain 53 drives the second rotating gear 52 to rotate, and the second rotating gear 52 drives the guide roller 13 to rotate. The rotation of the guide roller 13 relieves the winding roller 11 of the tension required for winding the cloth, greatly reducing the tension on the surface of the cloth when the winding roller 11 winds the cloth.

[0063] With reference to Figure 1 and Figure 3 , the printing machine body 1 is provided with a tensioning assembly 6 for tensioning the rotating chain 53, and the tensioning assembly 6 includes two tensioning rods 61, two tensioning gears 62 and a tensioning spring 63. The two tensioning rods 61 are rotatably installed on the side wall of the printing machine body 1. The rotation points of the two tensioning rods 61 are located at the center. The tensioning spring 63 is fixedly connected to one end of the two tensioning rods 61 away from the winding roller 11. The two tensioning gears 62 are rotatably connected to one end of the two tensioning rods 61 close to the winding roller 11 and are in mesh with the rotating chain 53.

[0064] The working principle of the embodiment 1 of the application is as follows:

[0065] The pre-storage roller 22 pre-stores the fabric to be rolled up. When the fabric on the rolling roller 11 is increased, the surface tension of the fabric is increased, and the pre-storage roller 22 is moved upward, and the rotating rod 21 is rotated. When the fabric pressed by the pre-storage roller 22 is completely guided, the pre-storage roller 22 cannot adjust the surface tension of the fabric, the rotating rod 21 is moved to contact the control switch on the controller 23, the controller 23 controls the rotating motor 12 to stop, the rotating rod 21 is rotated to move the positioning rod 31, the limiting plate 45 is separated from the sliding block 44, and then the cutting knife 42 cuts the fabric, so that the fabric stops rolling, and the probability of tearing of the fabric in the printing process due to the excessive surface tension is reduced.

[0066] Embodiment 2 of the present application provides a printing process of a textile fabric, the printing process comprising S1, removing the lint on the textile fabric to be printed, removing the lint on the surface of the fabric, and deeply cleaning the surface of the fabric; S2, drying the cleaned fabric, and then introducing the dried fabric into the printing machine body 1 for printing treatment; S3, automatically starting computer vision detection during the printing process, judging whether the color is out of position, stopping the printing work of the printing machine body 1 and sounding an alarm when the color is out of position, and continuing the normal printing work when the color is normal, and rolling up the printed fabric; S4, introducing the printed textile fabric into a continuous steamer for steaming and developing color; S5, respectively performing soaping and drying treatment on the obtained textile fabric after steaming; and S6, storing or transporting the finished fabric after rolling and packaging.

[0067] The working principle of Embodiment 2 of the present application is as follows:

[0068] First, the lint on the textile fabric is removed to make the surface of the textile fabric smooth and neat, and then the surface of the textile fabric is deeply cleaned to remove the impurities adhered to the surface of the textile fabric. After cleaning, the fabric is dried and introduced into the printing machine body 1 for printing. The printing effect of the fabric is detected by computer vision detection during the printing process. The printed fabric is rolled up and then introduced into a continuous steamer for steaming and developing color. The obtained textile fabric is respectively subjected to soaping and drying treatment after steaming. Finally, the finished fabric is stored or transported after rolling and packaging.

[0069] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, and therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A digital printing machine for textile fabrics, characterized in that: The printing machine body (1) is provided with a winding roller (11) rotatingly arranged thereon, and a rotating motor (12) is arranged on the printing machine body (1), and the output shaft of the rotating motor (12) is connected with the winding roller (11); the cloth is wound on the winding roller (11) after being printed on the printing machine body (1); the printing machine body (1) is provided with an adjusting device (2) for adjusting the tension of the cloth surface; the adjusting device (2) comprises: a rotating rod (21) is rotatably arranged on the printing machine body (1) at one end; a pre-storage roller (22) is rotatably arranged on the rotating rod (21) at an end away from the rotating position; the cloth after printing is wound on the winding roller (11) after passing through the pre-storage roller (22) from below the pre-storage roller (22); when the printing machine body (1) starts printing, the pre-storage roller (22) is located at the lowest height; when the pre-storage roller (22) rotates to the highest height, the cloth passing through the pre-storage roller (22) is in a horizontal state; a controller (23) is arranged on the printing machine body (1) and connected with the rotating motor (12); the controller (23) is provided with a control switch; when the pre-storage roller (22) rotates to the highest height, the rotating rod (21) contacts the control switch; the printing machine body (1) is provided with a positioning mechanism (3) for positioning the position of the rotating rod (21); the positioning mechanism (3) comprises: a positioning rod (31) is rotatably arranged on the printing machine body (1); the rotating point of the positioning rod (31) is located at the center of the positioning rod (31); one end of the positioning rod (31) is slidingly arranged on the rotating rod (21) along the length direction of the rotating rod (21); a positioning spring (32) is arranged on the frame at one end, and the other end of the positioning spring (32) is connected with the end of the positioning rod (31) away from the rotating rod (21); the printing machine body (1) is provided with a cloth cutting assembly (4) for cutting the cloth; the cloth cutting assembly (4) comprises: a cloth placing plate (41) is arranged on the printing machine body (1); the cloth is laid on the cloth placing plate (41) before passing through the rotating rod (21); a cloth cutting knife (42) is vertically slidingly arranged on the printing machine body (1); the cloth cutting knife (42) is used for cutting the cloth on the cloth placing plate (41); a limiting piece (43) is arranged on the printing machine body (1); the limiting piece (43) is used for limiting the vertical position of the cloth cutting knife (42); the limiting piece (43) comprises: A sliding block (44) is slidably arranged in a vertical sliding groove (46) formed in the printing machine body (1), the cutting blade (42) is arranged on the sliding block (44), and the cutting blade (42) is in abutment with the surface of the cloth placing plate (41) when the sliding block (44) is located at the bottom of the sliding groove (46); A limiting plate (45) is arranged at one end of the connecting end of the positioning rod (31) and the positioning spring (32), and the other end of the limiting plate (45) is in abutment with the lower surface of the sliding block (44); when the connecting end of the positioning rod (31) and the limiting plate (45) is rotated to the lowest position, the end of the limiting plate (45) close to the sliding block (44) is separated from the sliding block (44).

2. The textile fabric digital printing machine according to claim 1, characterized in that: A guide roller (13) is rotatably arranged on the printing machine body (1) between the winding roller (11) and the pre-storing roller (22), the cloth is wound onto the winding roller (11) by passing around the pre-storing roller (22) and the guide roller (13), and the printing machine body (1) is provided with a rotating assembly (5) for driving the guide roller (13) to rotate.

3. The textile fabric digital printing machine according to claim 2, characterized in that: The rotating assembly (5) comprises: A first rotating gear (51) arranged on the output shaft of the rotating motor (12); A second rotating gear (52) arranged on the guide roller (13); A rotating chain (53) sleeved on the first rotating gear (51) and the second rotating gear (52).

4. The textile fabric digital printing machine according to claim 3, characterized in that: The printing machine body (1) is provided with a tensioning assembly (6) for tensioning the rotating chain (53), and the tensioning assembly (6) comprises: Two tensioning rods (61) rotatably arranged on the printing machine body (1); Two tensioning gears (62) rotatably connected to the two tensioning rods (61) and engaged with the two outer sides of the rotating chain (53) respectively; A tensioning spring (63) connected to the two tensioning rods (61) at both ends, and the two tensioning gears (62) are always engaged with the rotating chain (53) under the action of the tensioning spring (63).

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