Digital dyeing device for spinning
The digital dyeing device, which combines a U-shaped reversing path with a dryer, solves the problems of dye waste and large equipment size in traditional textile dyeing, and achieves stable and efficient double-sided printing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN YILI FANGZHI TECHNOLOGY CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional textile dyeing technology suffers from dye waste and environmental pollution. Furthermore, existing equipment is bulky and occupies a large area, making it impossible to achieve double-sided printing or printing-drying separation, resulting in unstable colors and low equipment efficiency.
The digital dyeing device, which adopts a fold-back design and is combined with a dryer, achieves double-sided printing through a U-shaped reversing path. The reverse side is first inkjet-painted and then dried. Two sets of tension components are used to keep the fabric tension stable, ensuring that the positions of the patterns on the front and back sides are matched.
It achieves stability and color uniformity in double-sided printing, reduces dye waste and environmental pollution, has a small footprint, and improves production efficiency and dyeing quality.
Smart Images
Figure CN224210788U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display technology, and more specifically, to a digital dyeing device for textiles. Background Technology
[0002] As a core link in the textile industry chain, textile printing and dyeing technology enhances the color, functionality, and added value of textiles through processes such as dyeing, printing, and finishing. With increasing market competitiveness and the need for industrial upgrading, the requirements for environmental protection and green printing and dyeing are becoming increasingly stringent, while improving fabric quality.
[0003] Traditional dyeing techniques for fabrics require immersing the fabric in dye or spraying the prepared dye onto the fabric. Both methods require pre-preparing the dye of the desired color. Due to slight differences in the fabric, equipment, and dye itself, the dye prepared in one go may not necessarily produce the desired color, often requiring multiple trials. This process mainly relies on manual experience and inevitably leads to dye waste and environmental pollution. Moreover, the final product also has shortcomings in color vibrancy and color fastness stability. To solve or reduce the above problems, a digital inkjet printing dyeing device has been proposed.
[0004] Currently, most existing equipment can only perform printing, with printing and drying handled by separate devices that need to be purchased individually. Furthermore, existing products typically only print on one side, and the quality of single-sided printing is far inferior to double-sided printing.
[0005] Although there are double-sided printing devices on the market, existing double-sided printing devices use a linear layout design, and in order to ensure the printing and drying effect, it is usually necessary to increase the fabric conveying path, which results in the problem of large overall size and large area occupied by the device.
[0006] Therefore, it is necessary to propose a digital dyeing device for textiles. Utility Model Content
[0007] This utility model provides a digital dyeing device for textiles. By adopting a fold-back design combined with a dryer, it can reduce the equipment's floor space while avoiding the problem of blurry prints caused by incomplete drying of the printed material.
[0008] According to one aspect of the present invention, a digital dyeing apparatus for textiles is provided, comprising a frame, a feed roller mounted on the frame, a first print head, and a second print head. A guide roller and a reversing roller are mounted on the frame. A first tensioning device is installed between the feed roller and the guide roller. The first print head is mounted on the upper part between the first tensioning device and the guide roller, and the reversing roller is located below the guide roller. A guide roller is mounted at the bottom of the frame, and a second tensioning device is installed on the discharge side. A pressure roller is disposed between the guide roller and the second tensioning device, and the second print head is mounted on the upper part between the pressure roller and the second tensioning device.
[0009] Based on the above scheme, preferably, after the fabric is introduced into the first tensioning device by the feed roller, it passes around the guide roller and is output through the guide roller under the action of the reversing roller, so that the fabric forms a U-shaped reversal.
[0010] Based on the above scheme, preferably, there are multiple guide rollers arranged at intervals, and the guide rollers form positive pressure and reverse pressure on the fabric.
[0011] Based on the above scheme, a dryer is preferably provided on the frame between the guide roller and the reversing roller.
[0012] Based on the above scheme, preferably, both the first tensioning device and the second tensioning device include a tensioning guide roller, an adjusting roller and a mounting plate. The mounting plates are spaced apart and have grooves on their inner sides. The two ends of the adjusting roller are inserted into the grooves. The two tensioning guide rollers are arranged at the top of the mounting plates and spaced apart. The fabric passes through the tensioning guide roller on one side, goes around the adjusting roller and is output through the tensioning guide roller on the other side.
[0013] Preferably, based on the above scheme, a feed roller is provided on the adjacent side of the pressing roller, and both ends of the pressing roller are connected to the telescopic rod of the pressing cylinder, so as to drive the pressing roller and the feed roller to move relative to each other.
[0014] Based on the above scheme, preferably, the frame is equipped with a first main beam and a second main beam, the first print head is slidably mounted on the first main beam, and the second print head is slidably mounted on the second main beam.
[0015] This utility model discloses a digital dyeing device for textiles, which sets a first print head and a second print head on the frame. Combined with a guide roller and a reversing roller, the fabric feeding direction and the output direction form a U-shaped structure. This not only increases the fabric conveying time, allowing the pattern printed by the first print head to be solidified, but also enables double-sided digital dyeing by flipping the fabric due to the action of the reversing roller.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. Drying after inkjet printing on the reverse side ensures stable ink distribution on the reverse side, avoiding contamination or uneven ink distribution during subsequent inkjet printing on the front side;
[0018] 2. Two sets of tension components are used, which can not only maintain stable fabric tension, but also enable continuous and uninterrupted fabric feeding and output processes;
[0019] 3. The two digital inkjet components work in sync to ensure that there are no misalignments on the front and back sides that could cause stitching lines, color blocks, or other issues. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:
[0021] Figure 1 This is a schematic diagram of the structure of a digital dyeing device for textiles according to the present invention;
[0022] Figure 2 This is a side view of the digital dyeing apparatus for textiles according to the present invention;
[0023] Figure 3 This is a perspective view of the tensioning device of this utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the pressing roller and the feeding roller of this utility model.
[0025] Explanation of icon numbers:
[0026] Frame, feed roller, first print head, first tensioning device, guide roller, reversing roller, guide roller, pressure roller, second print head, second tensioning device
[0027] 10. Frame; 11. Feed roller; 12. First main beam; 13. Second main beam; 2. First tensioning device; 21. Tensioning guide roller; 22. Adjusting roller; 23. Mounting plate; 24. Slide groove; 31. Guide roller; 32. Reversing roller; 40. Guide roller; 50. Second tensioning device; 61. First print head; 62. Second print head; 71. Pressing roller; 72. Fabric feed roller; 73. Pressing cylinder; 80. Dryer. Detailed Implementation
[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0029] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.
[0030] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0031] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0032] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.
[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0035] Please see Figure 1 and combined Figure 2 , Figure 3 and Figure 4 As shown, a digital dyeing device for textiles according to this utility model includes a frame 10, a feed roller 11, a first print head 61, and a second print head 62.
[0036] The frame 10 provides a mounting base for the feed roller 11, the first print head 61, and the second print head 62. The feed roller 11 is used to guide and flatten the fabric during feeding. The first print head 61 is used to print on the front side of the fabric, while the second print head 62 is used to print on the back side of the fabric.
[0037] In this invention, a guide roller 31 and a reversing roller 32 are provided in the fabric feeding direction of the frame 10, and a first tensioning device 2 is provided between the feed roller 11 and the guide roller 31 for adjusting the fabric tension; while the first print head 61 is installed on the upper part of the frame 10 between the first tensioning device 2 and the guide roller 31 for inkjet printing on the front side of the fabric.
[0038] The reversing roller 32 is positioned below the guide roller 31, preferably directly below it. It works in conjunction with the guide roller 31 to form a U-shaped reversing path for the fabric, thereby reversing the fabric and extending the residence time of the fabric in the device, thus providing conditions for ink curing.
[0039] Multiple guide rollers 40 are spaced apart on the frame 10 in the output direction of the reversing roller 32. The fabric is alternately wrapped around the multiple guide rollers 40 to form positive and negative pressure on the fabric, so as to ensure the smooth conveying of the fabric.
[0040] A second tensioning device 50 is provided on the frame 10 in the output direction of the guide roller 40, and a pressure roller 71 is provided at the input end of the second print head 62. That is, the fabric after inkjet printing by the first print head 61 is reversed under the action of the reversing roller 32. After reversing, the fabric is flattened under the forward and reverse forces of the guide roller 40 and then guided to the lower part of the second print head 62 by the pressure roller 71. Under the action of the second tensioning device 50, the flatness of the fabric at the lower part of the second print head 62 is ensured, and the problem of fabric over-dyeing is avoided. Inkjet dyeing is performed on the reverse side of the fabric at the lower part of the second print head 62.
[0041] The present invention comprises multiple guide rollers 40 arranged at intervals. These guide rollers 40 are located on both the front and back sides of the fabric to form positive and negative pressure on the fabric, thereby ensuring smooth fabric transport.
[0042] Furthermore, this invention provides a dryer 80 on the frame 10 between the guide roller 40 and the reversing roller 32, which is used to dry the fabric after reverse dyeing, to avoid ink contamination or uneven distribution during subsequent front dyeing, further reducing the length of the conveying path and the size of the equipment.
[0043] It is worth noting that the first tensioning device 2 and the second tensioning device 50 of this utility model have the same structure, but their installation positions are different.
[0044] Specifically, both the first tensioning device 2 and the second tensioning device 50 include a tensioning guide roller 21, an adjusting roller 22, and a mounting plate 23. The mounting plate 23 is spaced apart and mounted on the frame 10, and a groove 24 is provided on the inner side of the mounting plate 23. The two ends of the adjusting roller 22 are inserted into the groove 24 and can slide up and down to adjust the tension. The two tensioning guide rollers 21 are set on the top of the mounting plate 23 and spaced apart. The fabric passes through the tensioning guide roller 21 on one side, passes around the adjusting roller 22, and is output through the tensioning guide roller 21 on the other side. The tension is dynamically adjusted by adjusting the position of the adjusting roller 22.
[0045] In this invention, a fabric feed roller 72 is provided on the adjacent side of the pressing roller 71, and both ends of the pressing roller 71 are connected to the telescopic rod of the pressing cylinder 73, which drives the pressing roller 71 and the fabric feed roller 72 to move relative to each other. The pressing cylinder 73 drives the pressing roller 71 and the fabric feed roller 72 to move relative to each other, thereby pressing and fixing the fabric and ensuring the stability of the fabric position when the second printing head 62 is dyeing.
[0046] This utility model has a first main beam 12 and a second main beam 13 installed on the frame 10. The first print head is slidably installed on the first main beam 12 and the second print head is slidably installed on the second main beam 13. During use, the printing position can be adjusted according to the width of the fabric, thereby improving the applicability of the device.
[0047] The fabric is fed by the feed roller 11, tensioned by the first tensioning device 2, and then enters below the first print head 61 to complete the front inkjet dyeing. After dyeing, the fabric is wound around the guide roller 31 and the reversing roller 32 to form a U-shaped reversal. At this time, the reverse side of the fabric is facing up, and the ink on the reverse side is cured by the dryer 80. The fabric is then conveyed by the guide roller 40 to the space between the pressure roller 71 and the feed roller 72. The pressure cylinder 73 is activated to fix the fabric, and the second print head 62 performs inkjet dyeing on the reverse side. After double-sided dyeing is completed, the fabric is tensioned by the second tensioning device 50 and then output. Throughout the process, the two sets of tensioning devices maintain stable fabric tension to ensure continuous production.
[0048] This utility model discloses a digital dyeing device for textiles that combines double-sided dyeing with ink curing. Through a U-shaped reversing path, the reverse side of the fabric is dyed and dried first, avoiding ink penetration and contamination during the dyeing of the front side, thus ensuring the quality of double-sided dyeing.
[0049] Secondly, the tension control of this utility model is more stable. The two tensioning devices achieve continuous and stable control of the fabric tension during the fabric feeding and discharging process by adjusting the sliding adjustment roller 22, thus avoiding fabric wrinkles or loosening.
[0050] On the other hand, the printing position of this utility model is precisely matched: the first print head 61 and the second print head 62 are slidably installed through the main beam and are linked for control, ensuring that the positions of the front and back dyeing patterns are matched, avoiding splicing lines or color block deviations.
[0051] This utility model discloses a digital dyeing device for textiles. A first print head 61 and a second print head 62 are set on the frame 10. Combined with the guide roller 31 and the reversing roller 32, the fabric feeding direction and the output direction are formed into a U-shaped structure. This not only increases the fabric conveying time, but also allows the pattern printed by the first print head 61 to be cured. Furthermore, due to the action of the reversing roller 32, the fabric is flipped, which enables double-sided digital dyeing.
[0052] Since the post-processing of fabric dyeing includes a series of operations such as uniform pressing, drying, and color fixing, the fabric needs to maintain a uniform speed during the post-processing stage in order to ensure the uniformity of color distribution. Therefore, the rotation of the feed roller 72, the position of the first tensioning device 20, and the position of the second tensioning roller 50 are controlled to a certain extent.
[0053] After pretreatment, the fabric enters the first tension assembly at a constant speed V, and simultaneously exits the second tension assembly at a constant speed V to enter the post-treatment stage. Initially, the first tensioning device 20 is at a lower position A1, and the second tensioning roller 50 is at a higher position B2. By controlling the rotation of the feed roller 72, the fabric moves forward a distance S, a process that takes time t1. At this point, the first tensioning device 20 will be pulled from the lower position A1 to position B1, and the distance must meet the following conditions:
[0054] ;
[0055] Similarly, as the fabric at position 72 advances by S, position 50 of the second tensioning roller will decrease from B2 to A2, and the distance requirement will be met.
[0056] ;
[0057] At this time, the first print head 61 and the second print head 62 will move along the first beam 12 and the second beam 13 respectively to perform inkjet printing on the fabric. The inkjet process takes time t2. During the inkjet process, the pre-treated fabric still enters the first tension assembly at a constant speed V, so the first tensioning device 20 will fall from position B1 to position A1 at a constant speed; the fabric coming out of the second tension assembly also moves towards the post-processing stage at a constant speed V, so the position of the second tensioning roller 50 will rise from position A2 to position B2 at a constant speed. Here, it is necessary to satisfy...
[0058] ;
[0059] After completing one cycle of two-sided inkjet printing, the first tensioning device 20 and the second tensioning roller 50 both return to their initial positions, allowing for the next cycle of inkjet printing and coloring. This ensures that the pre-treated fabric enters at a uniform speed, and the ink-printed fabric enters the post-processing stage at a uniform speed, guaranteeing uniform ink distribution and color fixation.
[0060] Compared with the prior art, the present invention has the following advantages:
[0061] Drying after inkjet printing on the reverse side ensures stable ink distribution on the reverse side, preventing contamination or uneven ink distribution during subsequent inkjet printing on the front side.
[0062] It employs two sets of tension components, which not only maintain stable fabric tension but also enable continuous and uninterrupted fabric feeding and output processes.
[0063] The two digital inkjet components work in sync to ensure that there are no misalignments on the front and back sides that could cause stitching lines, color blocks, or other issues.
[0064] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A digital dyeing device for textiles, characterized in that, The device includes a frame, a feed roller mounted on the frame, a first print head, and a second print head. The frame is equipped with a guide roller and a reversing roller. A first tensioning device is installed between the feed roller and the guide roller. The first print head is installed in the upper part between the first tensioning device and the guide roller, and the reversing roller is located below the guide roller. A guide roller is installed at the bottom of the frame, and a second tensioning device is installed on the discharge side. A pressure roller is provided between the guide roller and the second tensioning device, and the second print head is installed in the upper part between the pressure roller and the second tensioning device.
2. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, After the fabric is fed into the first tensioning device by the feed roller, it passes around the guide roller and is output through the guide roller under the action of the reversing roller, so that the fabric forms a U-shaped reversing direction.
3. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, The guide rollers are multiple and spaced apart, and these guide rollers exert both positive and negative pressure on the fabric.
4. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, A dryer is installed on the frame between the guide roller and the reversing roller.
5. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, Both the first tensioning device and the second tensioning device include a tensioning guide roller, an adjusting roller, and a mounting plate. The mounting plates are spaced apart and have grooves on their inner sides. The two ends of the adjusting roller are inserted into the grooves. The two tensioning guide rollers are positioned on the top of the mounting plates and spaced apart. The fabric passes through the tensioning guide roller on one side, goes around the adjusting roller, and is output through the tensioning guide roller on the other side.
6. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, The pressing roller is provided with a feeding roller on the adjacent side, and the two ends of the pressing roller are connected to the telescopic rod of the pressing cylinder, which drives the pressing roller and the feeding roller to move relative to each other.
7. The digital dyeing apparatus for textiles as described in claim 1, characterized in that, The frame is equipped with a first main beam and a second main beam. The first print head is slidably mounted on the first main beam, and the second print head is slidably mounted on the second main beam.