Printing and dyeing apparatus

Abstract

This disclosure relates to a dyeing and printing apparatus for a target object, comprising: a sizing device configured to sizing the target object; a first pressing unit configured to press the sizing target object; a detection unit configured to detect at least one of the target object's position, floating distance, transmission rate, and tension; a dyeing and printing unit configured to dye the target object after it has been pressed by the first pressing unit; a drying unit configured to dry the target object; and a control unit configured to control at least one of the first pressing unit and the dyeing and printing unit based on the detection results of at least one of the target object's position, floating distance, transmission rate, and tension, such that the transmission rate of the first pressing unit with respect to the target object is matched with the dyeing and printing speed of the dyeing and printing unit. This solution allows for dyeing and printing operations to be performed after sizing the target object without the need for drying, achieving high-penetration dyeing and printing production.

Description

Technical Field

[0001] The embodiments disclosed herein relate generally to the field of printing and dyeing technology, and more specifically to a printing and dyeing apparatus. Background Technology

[0002] Digitally printed fabrics require offline drying during the padding and sizing process, which is not only lengthy and energy-intensive but also suffers from poor sizing penetration. Currently used rotary screen online wet sizing processes still exhibit quality defects in actual production, such as unsatisfactory sizing penetration, spots on the back of the fabric, and uneven sizing distribution. Furthermore, they struggle to balance high penetration and high precision in printing, failing to meet the production requirements of high-end fabric printing. Summary of the Invention

[0003] To address the aforementioned issues, this disclosure provides a printing and dyeing equipment that enables high-penetration printing and dyeing production.

[0004] According to one aspect of this disclosure, a dyeing and printing apparatus for a target object is provided, characterized in that it comprises: a sizing device configured to sizing a target object; a first pressing unit configured to press the sized target object, wherein the first pressing unit and the sizing device are integrated or separately arranged along the transport direction of the target object; a detection unit configured to detect at least one of the target object's position, floating distance, transport rate, and tension; a dyeing and printing unit configured to dye the target object after it has been pressed by the first pressing unit; a drying unit configured to dry the target object; and a control unit configured to control at least one of the first pressing unit and the dyeing and printing unit based on the detection results of at least one of the target object's position, floating distance, transport rate, and tension, such that the transport rate of the first pressing unit with respect to the target object is matched with the dyeing and printing speed of the dyeing and printing unit.

[0005] In some embodiments, the dyeing and printing equipment further includes: a second pressing unit configured to press a dyed target object, the second pressing unit being disposed between the dyeing and printing unit and the drying unit; and the control unit is further configured to: control at least one of the first pressing unit and the second pressing unit based on detection results of at least one of the target object's position, floating distance, transmission rate, and tension, such that the transmission rate of the first pressing unit with respect to the target object is synchronized with the transmission rate of the second pressing unit with respect to the target object; the sizing device includes a sizing tank.

[0006] In some embodiments, the dyeing and printing equipment further includes: a first liquid carrying rate detection unit, which is disposed behind the dyeing and printing unit according to the direction in which the target object is conveyed, and is configured to detect a first liquid carrying rate of the target object; wherein the control unit is further configured to determine the initial pressure of the second pressing unit for pressing the target object according to the pattern corresponding to the pattern to be dyed, and to adjust the pressure of the second pressing unit for pressing the target object according to the first liquid carrying rate, so that the first liquid carrying rate conforms to a first predetermined liquid carrying rate.

[0007] In some embodiments, the dyeing and printing equipment further includes: a second liquid carry-over rate detection unit disposed behind the first rolling unit, the second liquid carry-over rate detection unit being configured to detect a second liquid carry-over rate of the target object; wherein the control unit is further configured to determine the initial pressure of the first rolling unit for rolling the target object according to the type of the target object, and to adjust the pressure of the first rolling unit for rolling the target object according to at least the second liquid carry-over rate, so that the second liquid carry-over rate conforms to a second predetermined liquid carry-over rate.

[0008] In some embodiments, the second rolling unit includes: a first roll; a second roll cooperating with the first roll for rolling a target object between the first roll and the second roll; and one or more cleaning units cooperating with at least one of the first roll and the second roll to remove liquid from the surface of at least one of the first roll and the second roll.

[0009] In some embodiments, the dyeing and printing equipment further includes: a third liquid carry-over rate detection unit, which is disposed behind the second rolling unit according to the direction in which the target object is conveyed, and is configured to detect a third liquid carry-over rate of the target object; wherein, the drying unit includes: a first drying unit, which is disposed behind the dyeing and printing unit according to the direction in which the target object is conveyed, and is configured to perform a non-contact pre-drying operation on the target object; the control unit is further configured to adjust the temperature of the first drying unit according to the third liquid carry-over rate.

[0010] In some embodiments, the drying unit further includes a second drying unit, which is disposed behind the first drying unit in the direction in which the target object is conveyed, and is configured to perform a drying operation on the target object.

[0011] In some embodiments, the control unit is further configured to: increase the pressure of the first rolling unit on the target object in response to determining that the second liquid carry-over rate is greater than the second predetermined liquid carry-over rate; decrease the pressure of the first rolling unit on the target object in response to determining that the second liquid carry-over rate is less than the second predetermined liquid carry-over rate; decrease the pressure of the second rolling unit on the target object in response to determining that the first liquid carry-over rate is greater than the first predetermined liquid carry-over rate; increase the pressure of the second rolling unit on the target object in response to determining that the first liquid carry-over rate is less than the first predetermined liquid carry-over rate; increase the temperature of the first drying unit in response to determining that the third liquid carry-over rate is greater than the third predetermined liquid carry-over rate; and decrease the temperature of the first drying unit in response to determining that the third liquid carry-over rate is less than the third predetermined liquid carry-over rate.

[0012] In some embodiments, the cleaning unit includes: a spraying unit configured to spray cleaning fluid onto at least one of the first roll and the second roll; and a scraper configured to scrape off the fluid from the surface of at least one of the first roll and the second roll.

[0013] In some embodiments, at least one of the first roll and the second roll is configured to have a surface smoothness greater than a predetermined smoothness.

[0014] In some embodiments, at least one of the first roll and the second roll is configured to have a profile arithmetic mean deviation of less than or equal to 0.2 micrometers; and be made of a water-repellent material.

[0015] In some embodiments, the control unit is further configured to: adjust the pressure of the first pressing unit pressing the target object according to the viscosity of the slurry of the sizing device; adjust the pressure of the second pressing unit pressing the target object according to the printing speed of the printing and dyeing unit; and adjust the pressure of the second pressing unit pressing the target object according to the ink output of the printing and dyeing unit.

[0016] In some embodiments, the detection unit includes: a floating roller disposed between a first rolling unit and a second rolling unit, and floating with the upper surface of the target object; a first position detection device disposed between the first rolling unit and the second rolling unit, and corresponding to a first height; and a second position detection device disposed between the first rolling unit and the second rolling unit, and corresponding to a second height, wherein the first height is higher than the second height; wherein the control unit is further configured to: when the first position detection device detects the floating roller, the control unit controls the first rolling unit to increase the transmission rate with respect to the target object or controls the second rolling unit to decrease the transmission rate with respect to the target object; and when the second position detection device detects the floating roller, the control unit controls the first rolling unit to decrease the transmission rate with respect to the target object or controls the second rolling unit to increase the transmission rate with respect to the target object.

[0017] In some embodiments, the detection unit includes: a floating roller disposed between the first rolling unit and the second rolling unit, and floating following the upper surface of the target object; a sensor configured to detect the floating distance of the floating roller relative to the target position; wherein the control unit is further configured to: control at least one of the first rolling unit and the second rolling unit based on the detected floating distance, such that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object.

[0018] In some embodiments, the control unit is further configured to: increase the pressure of the first rolling unit on the target object by 0.1 MPa for every 5% increase in the second liquid carry ratio relative to the second predetermined liquid carry ratio; decrease the pressure of the first rolling unit on the target object by 0.1 MPa for every 5% decrease in the second liquid carry ratio relative to the second predetermined liquid carry ratio; decrease the pressure of the second rolling unit on the target object by 0.1 MPa for every 5% increase in the first liquid carry ratio relative to the first predetermined liquid carry ratio; and increase the pressure of the second rolling unit on the target object by 0.1 MPa for every 5% decrease in the first liquid carry ratio relative to the first predetermined liquid carry ratio.

[0019] According to the technical solution of this disclosure, the dyeing and printing equipment for a target object includes a sizing device, a first pressing unit, a detection unit, a dyeing and printing unit, and a drying unit. The sizing device is configured to sizing the target object; the first pressing unit is configured to press the sized target object, and the first pressing unit and the sizing device are integrated or separately arranged along the transport direction of the target object; the detection unit is configured to detect at least one of the target object's position, floating distance, transport rate, and tension; the dyeing and printing unit is configured to dye the target object after it has been pressed by the first pressing unit; the drying unit is configured to dry the target object; and the control unit is configured to control at least one of the first pressing unit and the dyeing and printing unit based on the detection results of at least one of the target object's position, floating distance, transport rate, and tension, so that the transport rate of the first pressing unit with respect to the target object is matched with the dyeing and printing speed of the dyeing and printing unit. This solution allows for printing and dyeing operations to be performed on the target object without drying after sizing. In other words, printing and dyeing operations can be performed on the target object while it is still wet (e.g., with a certain liquid content) without drying, thus enabling high-penetration printing and dyeing production.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0021] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements.

[0022] Figure 1 A schematic diagram of a printing and dyeing apparatus for a target object, according to an embodiment of the present disclosure, is shown.

[0023] Figure 2 It shows Figure 1 A partial schematic diagram.

[0024] Figure 3 A schematic diagram of a printing and dyeing apparatus for a target object, according to an embodiment of the present disclosure, is shown.

[0025] Figure 4 A schematic diagram of a printing and dyeing apparatus for a target object, according to an embodiment of the present disclosure, is shown.

[0026] Figure 5 A partial schematic diagram of a dyeing and printing apparatus for a target object according to an embodiment of the present disclosure is shown.

[0027] Figure 6A partial schematic diagram of a dyeing and printing apparatus for a target object according to an embodiment of the present disclosure is shown.

[0028] Figure 7 A partial schematic diagram of a dyeing and printing apparatus for a target object according to an embodiment of the present disclosure is shown.

[0029] Figure 8 A schematic diagram of the structure of the second rolling unit according to an embodiment of the present disclosure is shown.

[0030] Figure 9 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown.

[0031] Figure 10 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown.

[0032] Figure 11 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown. Detailed Implementation

[0033] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0034] The term "comprising" and its variations as used herein signify open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "at least partially based on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0035] As described above, digitally printed fabrics require offline drying during the padding and sizing process, which is not only lengthy and energy-intensive but also suffers from poor sizing penetration. Currently used rotary screen online wet sizing technology still exhibits quality defects in actual production, such as unsatisfactory sizing penetration, spots on the back of the fabric, and uneven sizing distribution. Furthermore, it struggles to balance high penetration and high precision in printing, failing to meet the production requirements of high-end fabric printing.

[0036] To at least partially address one or more of the aforementioned problems and other potential issues, exemplary embodiments of this disclosure propose a dyeing and printing apparatus for a target object, comprising, in sequence according to the direction in which the target object is conveyed, a sizing device, a first pressing unit, a synchronization detection unit, a dyeing and printing unit, and a drying unit; the sizing device is configured to sizing the target object; the first pressing unit is configured to pressing the target object; the synchronization detection unit is configured to detect a synchronization attribute between the transmission rate of the first pressing unit with respect to the target object and the transmission rate of the second pressing unit with respect to the target object; the dyeing and printing unit is configured to dye the undried target object; the second pressing unit is configured to pressing the target object; the drying unit is configured to drying the target object; the dyeing and printing apparatus further includes a control unit configured to control at least one of the first pressing unit and the second pressing unit according to the synchronization attribute, such that the transmission rate of the first pressing unit with respect to the target object is synchronized with the transmission rate of the second pressing unit with respect to the target object. This solution allows for printing and dyeing operations to be performed on the target object without drying after sizing. In other words, printing and dyeing operations can be performed on the target object while it is still wet (e.g., with a certain liquid content) without drying, thus enabling high-penetration printing and dyeing production.

[0037] The following description, in conjunction with the accompanying drawings, describes the embodiments of this disclosure.

[0038] Figure 1 A schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. The dyeing and printing apparatus 100 includes a sizing device 101, a first pressing unit 102, a detection unit 60, a dyeing and printing unit 104, a drying unit (not shown), and a control unit (not shown). The dyeing and printing apparatus 100 also includes a fabric feeder 112 and a guide belt 114. The detection unit 60 includes, for example, a floating roller 601.

[0039] Among them, one or more of the feed rollers on the feed frame 112, the feed rollers at the sizing device 101, the first pressing unit 102, and the guide belt 114 can drive the target object 201, so that the target object 201 is transported to implement the corresponding production process. The control unit can control the transport rate of the feed rollers on the feed frame 112, the feed rollers at the sizing device 101, the first pressing unit 102, and the guide belt 114 towards the target object 201.

[0040] The sizing device 101 is configured to sizing the target object 201.

[0041] The first rolling unit 102 is configured to roll the target object after it has been sizing. Figure 1For example, the first rolling unit 102 and the sizing device 101 are separately arranged along the transmission direction of the target object 201.

[0042] In some embodiments, the first rolling unit 102 and the sizing device 101 are integrated. For example, the first rolling unit 102 and the sizing device 101 are integrated in a rolling mill.

[0043] The detection unit 60 is configured to detect at least one of the following: the position of the target object 201, the floating distance, the transmission rate, and the tension. The detection unit 60 includes, for example, a floating roller 601 and a detection device (not shown) for detecting the height of the floating roller. The floating roller 601 has its own gravity or counterweight, and floats along with the upper surface of the target object 201 when it is in contact with the target object 201.

[0044] The height of the floating roller 601 reflects the tension of the target object 201. For example, when the floating roller 601 is within a predetermined target height range, it indicates that the target object 201 is within a predetermined target tension range. When the floating roller 601 is above the predetermined target height range, it indicates that the tension of the target object 201 is greater than the predetermined target tension range. When the floating roller 601 is below the predetermined target height range, it indicates that the tension of the target object 201 is less than the predetermined target tension range.

[0045] The height of the floating roller 601 reflects the transmission rate of the target object 201. For example, the height of the floating roller 601 reflects the relative relationship between the transmission rate of the target object 201 by the first rolling unit 102 and the transmission rate of the target object 201 by the guide belt 114. For example, when the floating roller 601 is within the predetermined target height range, it indicates that the transmission rates of the target object 201 by the first rolling unit 102 and the guide belt 114 are relatively synchronized. When the floating roller 601 is above the predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. When the floating roller 601 is below the predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114.

[0046] The printing and dyeing unit 104 is configured to print and dye the target object 201 after it has been rolled by the first rolling unit 102.

[0047] The drying unit is configured to dry the target object.

[0048] The control unit is configured to control at least one of the first rolling unit and the dyeing unit based on at least one of the detection results regarding the position of the target object, the floating distance, the transmission rate, and the tension, so that the transmission rate of the first rolling unit with respect to the target object is matched with the dyeing speed of the dyeing unit.

[0049] For example, when the floating roller 601 is within the predetermined target height range, it means that the target object 201 is within the predetermined target tension range. The transmission rate of the target object 201 transmitted by the first rolling unit 102 is relatively synchronized with the transmission rate of the target object 201 transmitted by the guide belt 114. The control unit does not adjust the transmission rate of the target object 201 transmitted by the first rolling unit 102, nor does it adjust the printing speed of the printing and dyeing unit 104.

[0050] When the floating roller 601 is above a predetermined target height range, it indicates that the tension of the target object 201 is greater than the predetermined target tension range, and that the transmission rate of the target object 201 by the first pressing unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0051] When the floating roller 601 is below a predetermined target height range, it indicates that the transmission rate of the target object 201 by the first pressing unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0052] It should be understood that the height of the floating roller 601 reflects the position (height) of the target object 201.

[0053] Using the printing and dyeing equipment 100, printing and dyeing operations can be carried out without drying after the target object has been sized. That is, printing and dyeing operations can be carried out when the target object is wet (e.g., with a certain liquid content) without being dried, thus achieving high-penetration printing and dyeing production.

[0054] Figure 2 It shows Figure 1A partial schematic diagram. The detection unit 60 includes a floating roller 601 and a sensor 605. The floating roller 601 is limited, for example, by a limiting unit 604. The limiting unit 604 is, for example, a limiting groove. The floating roller 601 moves up and down, for example, along the limiting unit 604 (limiting groove).

[0055] A floating roller 601 is positioned between the first rolling unit and the dyeing unit, and floats following the upper surface of the target object. A sensor 605 is configured to detect the floating distance of the floating roller relative to the target position.

[0056] The control unit is further configured to control at least one of the first rolling unit and the dyeing unit based on the detected floating distance, so that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the dyeing unit with respect to the target object.

[0057] Sensor 605, for example, faces downwards to detect the distance between sensor 605 and floating roller 601.

[0058] In some embodiments, the target position is the location of sensor 605, and the distance detected by sensor 605 between sensor 605 and floating roller 601 corresponds, for example, to the floating distance of floating roller 601 relative to the target position. When floating roller 601 is at the first position POS1, the floating distance of floating roller 601 relative to the target position is less than a first predetermined distance, and the transmission rate of the target object 201 by the first pressing unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. When the floating roller 601 is at the second position POS2, the floating distance of the floating roller 601 relative to the target position is greater than a second predetermined distance, indicating that the transmission rate of the target object 201 by the first pressing unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0059] In some embodiments, with the target position being the third position POS3, the difference between the first distance between sensor 605 and floating roller 601 and the second distance between sensor 605 and third position POS3, detected by sensor 605, corresponds, for example, to the floating distance of floating roller 601 relative to the target position. When floating roller 601 is at the first position POS1, the floating distance of floating roller 601 relative to the target position is less than a first predetermined distance, and the transmission rate of the target object 201 by the first pressing unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. When the floating roller 601 is at the second position POS2, the floating distance of the floating roller 601 relative to the target position is greater than a second predetermined distance, indicating that the transmission rate of the target object 201 by the first pressing unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0060] In some embodiments, the detection device 60 can detect the transmission rate with respect to the target object 201. For example, the detection device 60 determines the relative relationship (e.g., the difference in rates) between the transmission rate of the first rolling unit 102 with respect to the target object 201 and the transmission rate of the guide belt 114 at the dyeing unit with respect to the target object 201 by detecting the transmission rate of the first rolling unit 102 with respect to the target object 201 and the transmission rate of the guide belt 114 at the dyeing unit with respect to the target object 201.

[0061] When the difference between the transmission rate of the first pressing unit 102 with respect to the target object 201 and the transmission rate of the guide belt 114 at the dyeing unit with respect to the target object 201 is greater than a predetermined value, the control unit determines that the transmission rate of the first pressing unit 102 with respect to the target object 201 is faster than the transmission rate of the guide belt 114 at the dyeing unit with respect to the target object 201. In some embodiments, the control unit reduces the transmission rate of the first pressing unit 102 with respect to the target object 201 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0062] When the difference between the transmission rate of the guide belt 114 at the dyeing unit and the transmission rate of the first pressing unit 102 with respect to the target object 201 is greater than a predetermined value, the control unit determines that the transmission rate of the first pressing unit 102 with respect to the target object 201 is slower than the transmission rate of the guide belt 114 at the dyeing unit. In some embodiments, the control unit increases the transmission rate of the first pressing unit 102 with respect to the target object 201 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0063] In some embodiments, the detection device 60 can detect tension with respect to the target object 201.

[0064] When the tension relative to the target object 201 is less than a predetermined value, the control unit determines that the transmission rate of the first pressing unit 102 relative to the target object 201 is faster than the transmission rate of the guide belt 114 at the dyeing unit relative to the target object 201. In some embodiments, the control unit reduces the transmission rate of the first pressing unit 102 relative to the target object 201 to match the transmission rate of the first pressing unit relative to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit relative to the target object with the dyeing speed of the dyeing unit.

[0065] When the tension on the target object 201 exceeds a predetermined value, the control unit determines that the transmission rate of the first pressing unit 102 with respect to the target object 201 is slower than the transmission rate of the guide belt 114 at the dyeing unit with respect to the target object 201. In some embodiments, the control unit increases the transmission rate of the first pressing unit 102 with respect to the target object 201 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0066] Figure 3 A schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. The dyeing and printing apparatus 100 includes a sizing device 101, a first pressing unit 102, a detection unit 60, a dyeing and printing unit 104, a drying unit (not shown), and a control unit (not shown). The dyeing and printing apparatus 100 also includes a fabric feeder 112, a guide belt 114, and a second pressing unit 107. The detection unit 60 includes, for example, a floating roller 601.

[0067] Among them, one or more of the feed rollers on the feed frame 112, the feed rollers at the sizing device 101, the first pressing unit 102, and the guide belt 114 can drive the target object 201, so that the target object 201 is transported to implement the corresponding production process. The control unit can control the transport rate of the feed rollers on the feed frame 112, the feed rollers at the sizing device 101, the first pressing unit 102, and the guide belt 114 towards the target object 201.

[0068] The sizing device 101 is configured to sizing the target object 201.

[0069] The first rolling unit 102 is configured to roll the target object after it has been sizing. Figure 3 For example, the first rolling unit 102 and the sizing device 101 are separately arranged along the transmission direction of the target object 201.

[0070] In some embodiments, the first rolling unit 102 and the sizing device 101 are integrated. For example, the first rolling unit 102 and the sizing device 101 are integrated in a rolling mill.

[0071] The detection unit 60 is configured to detect at least one of the following: position, floating distance, transmission rate, and tension of the target object 201. The detection unit 60 includes, for example, a floating roller 601 and a detection device (not shown) for detecting the height of the floating roller. The floating roller 601 has its own gravity or counterweight and floats along with the upper surface of the target object 201 when it is in contact with it. The detection unit 60 is, for example, disposed between the first rolling unit 102 and the dyeing unit 104.

[0072] In some embodiments, the detection unit 60 is configured to detect at least one of the following: position, floating distance, transmission rate, and tension of the target object relative to the first rolling unit.

[0073] The height of the floating roller 601 reflects the tension of the target object 201. For example, when the floating roller 601 is within a predetermined target height range, it indicates that the target object 201 is within a predetermined target tension range. When the floating roller 601 is above the predetermined target height range, it indicates that the tension of the target object 201 is greater than the predetermined target tension range. When the floating roller 601 is below the predetermined target height range, it indicates that the tension of the target object 201 is less than the predetermined target tension range.

[0074] The height of the floating roller 601 reflects the transmission rate of the target object 201. For example, the height of the floating roller 601 reflects the relative relationship between the transmission rate of the target object 201 by the first rolling unit 102 and the transmission rate of the target object by the second rolling unit. For example, when the floating roller 601 is within a predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 and the transmission rate of the target object by the second rolling unit are relatively synchronized. When the floating roller 601 is above the predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 is slower than the transmission rate of the target object by the second rolling unit. When the floating roller 601 is below the predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 is faster than the transmission rate of the target object by the second rolling unit.

[0075] The printing and dyeing unit 104 is configured to print and dye the target object 201 after it has been rolled by the first rolling unit 102.

[0076] The drying unit is configured to dry the target object.

[0077] The second rolling unit 107 is configured to roll over the dyed target object and is located between the dyeing unit 104 and the drying unit. The detection device 60 is further configured to detect at least one of the following: the position, floating distance, transmission rate, and tension of the target object at the second rolling unit. The control unit is further configured to control at least one of the first and second rolling units based on the detection results regarding the position, floating distance, transmission rate, and tension of the target object, such that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object.

[0078] The detection device 60 is disposed, for example, between the first rolling unit 102 and the second rolling unit 107. In some embodiments, the detection device 60 is disposed, for example, near the second rolling unit 107, and the detection device 60 is also configured to detect at least one of the position, floating distance, transmission rate and tension of the target object 201 at the second rolling unit 107.

[0079] The control unit is configured to control at least one of the first rolling unit and the second rolling unit based on at least one of the detection results regarding the position, floating distance, transmission rate and tension of the target object, such that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object.

[0080] For example, when the floating roller 601 is within the predetermined target height range, it means that the target object 201 is within the predetermined target tension range. The transmission rate of the target object 201 by the first rolling unit 102 is relatively synchronized with the transmission rate of the target object 201 by the guide belt 114. The control unit does not adjust the transmission rate of the target object 201 by the first rolling unit 102, nor does it adjust the transmission rate of the second rolling unit with respect to the target object.

[0081] When the floating roller 601 is above a predetermined target height range, it indicates that the tension of the target object 201 is greater than the predetermined target tension range, and that the transmission rate of the target object 201 by the first rolling unit 102 is slower than the transmission rate of the target object by the second rolling unit. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first rolling unit 102 so that the transmission rate of the target object by the first rolling unit 102 is synchronized with the transmission rate of the target object by the second rolling unit. In some embodiments, the control unit decreases the transmission rate of the target object by the second rolling unit so that the transmission rate of the target object by the first rolling unit 102 is synchronized with the transmission rate of the target object by the second rolling unit.

[0082] When the floating roller 601 is below a predetermined target height range, it indicates that the transmission rate of the target object 201 by the first rolling unit 102 is faster than the transmission rate of the target object by the second rolling unit. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first rolling unit 102 to synchronize the transmission rate of the target object by the first rolling unit with that of the second rolling unit. In some embodiments, the control unit increases the transmission rate of the target object by the second rolling unit to synchronize the transmission rate of the target object by the first rolling unit 102 with that of the second rolling unit.

[0083] Using the printing and dyeing equipment 100, printing and dyeing operations can be carried out without drying after sizing the target object. That is, printing and dyeing operations can be carried out when the target object is in a wet state (e.g., with a certain liquid content) without being dried, thus achieving high-penetration printing and dyeing production.

[0084] In some embodiments, refer to Figure 2 The detection unit 60 includes a floating roller 601 and a sensor 605. The floating roller 601 is limited, for example, by a limiting unit 604. The limiting unit 604 is, for example, a limiting groove. The floating roller 601 moves up and down, for example, along the limiting unit 604 (limiting groove).

[0085] A floating roller 601 is positioned between the first rolling unit and the dyeing unit, and floats following the upper surface of the target object. A sensor 605 is configured to detect the floating distance of the floating roller relative to the target position.

[0086] The control unit is further configured to control at least one of the first rolling unit and the dyeing unit based on the detected floating distance, so that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the dyeing unit with respect to the target object.

[0087] Sensor 605, for example, faces downwards to detect the distance between sensor 605 and floating roller 601.

[0088] In some embodiments, the target position is the location of sensor 605, and the distance detected by sensor 605 between sensor 605 and floating roller 601 corresponds, for example, to the floating distance of floating roller 601 relative to the target position. When floating roller 601 is at the first position POS1, the floating distance of floating roller 601 relative to the target position is less than a first predetermined distance, and the transmission rate of the target object 201 by the first pressing unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. When the floating roller 601 is at the second position POS2, the floating distance of the floating roller 601 relative to the target position is greater than a second predetermined distance, indicating that the transmission rate of the target object 201 by the first pressing unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0089] In some embodiments, with the target position being the third position POS3, the difference between the first distance between sensor 605 and floating roller 601 and the second distance between sensor 605 and third position POS3, detected by sensor 605, corresponds, for example, to the floating distance of floating roller 601 relative to the target position. When floating roller 601 is at the first position POS1, the floating distance of floating roller 601 relative to the target position is less than a first predetermined distance, and the transmission rate of the target object 201 by the first pressing unit 102 is slower than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit increases the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit decreases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. When the floating roller 601 is at the second position POS2, the floating distance of the floating roller 601 relative to the target position is greater than a second predetermined distance, indicating that the transmission rate of the target object 201 by the first pressing unit 102 is faster than the transmission rate of the target object 201 by the guide belt 114. In some embodiments, the control unit reduces the transmission rate of the target object 201 by the first pressing unit 102 to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit. In some embodiments, the control unit increases the dyeing speed of the dyeing unit to match the transmission rate of the first pressing unit with respect to the target object with the dyeing speed of the dyeing unit.

[0090] Figure 4 A schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. Figure 5 A partial schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. Figure 6 A partial schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. Figure 7 A partial schematic diagram of a dyeing and printing apparatus 100 for a target object according to an embodiment of the present disclosure is shown. The dyeing and printing apparatus 100 sequentially includes a sizing device 101, a first pressing unit 102, a second liquid retention detection unit 103, a synchronization detection unit, a fabric application roller 106, a dyeing and printing unit 104, a second pressing unit 107, and a drying unit 105, according to the direction in which the target object 201 is conveyed. The target object 201 is, for example, a fabric, such as cotton, linen, polyester, nylon, or blended fabrics. The dyeing and printing apparatus 100 also includes, for example, a fabric feeder 112, a first liquid retention detection unit 109, and a third liquid retention detection unit 110.

[0091] It is worth noting that the liquid content indicator is the ratio between the mass of liquid contained in the target object 201 and the mass of the target object 201 per unit area.

[0092] The sizing device 101 is configured to sizing a target object. The sizing device 101 is, for example, a sizing trough provided in a sizing rolling mill 111.

[0093] The first rolling unit 102 is configured to roll the target object 201. The first rolling unit 102 is, for example, the rolling unit in the sizing rolling mill 111.

[0094] The second liquid carryover rate detection unit 103 is configured to detect a second liquid carryover rate of the target object. The liquid carryover rate detection unit is used, for example, to detect the liquid carryover rate of the target object 201. The liquid carryover rate detection unit includes, for example, a humidity detector used to detect the humidity of the target object 201, and the liquid carryover rate of the target object 201 can be determined based on the humidity of the target object 201.

[0095] The synchronization detection unit is configured to detect the synchronization property between the transmission rate of the first rolling unit 102 with respect to the target object 201 and the transmission rate of the second rolling unit 107 with respect to the target object 201.

[0096] The dyeing unit 104 is configured to dye an undried target object 201. For example, after the target object 201 is sized, it is transported to the dyeing station of the dyeing unit 104 via a conveyor without drying, and the dyeing unit 104 dyes the target object 201. It is worth noting that the first pressing unit 102, the fabric-applying roller 106, the guide belt 114 at the dyeing station, and the second pressing unit 107 can all generate driving force on the target object 201 and can all be components of the conveyor for transporting the target object 201.

[0097] The printing and dyeing unit 104 includes, for example, a rotary screen printing unit 141, a positioning scanning device 142, and a digital printing unit 143.

[0098] The drying unit 105 is configured to dry the target object 201.

[0099] The dyeing and printing equipment 100 also includes a control unit (not shown in the figure). The control unit is configured to determine the initial pressure of the first rolling unit 102 rolling the target object 201 according to the type of the target object 201, and to adjust the pressure of the first rolling unit 102 rolling the target object 201 according to at least the second liquid carry-over rate, so that the second liquid carry-over rate conforms to the second predetermined liquid carry-over rate.

[0100] The control unit is also configured to control at least one of the first rolling unit and the second rolling unit according to a synchronization property between the transmission rate of the first rolling unit with respect to the target object and the transmission rate of the second rolling unit with respect to the target object, so that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object.

[0101] For example, in response to determining that the second liquid carry ratio is greater than the second predetermined liquid carry ratio, the pressure of the first rolling unit rolling the target object is increased, and in response to determining that the second liquid carry ratio is less than the second predetermined liquid carry ratio, the pressure of the first rolling unit rolling the target object is decreased.

[0102] For example, for every 5% increase in the second liquid carryover rate relative to the second predetermined liquid carryover rate, the rolling pressure of the first rolling unit on the target object increases by 0.1 MPa; and for every 5% decrease in the second liquid carryover rate relative to the second predetermined liquid carryover rate, the rolling pressure of the first rolling unit on the target object decreases by 0.1 MPa. It should be understood that liquid carryover rate is typically expressed as a percentage, and a 5% increase in the second liquid carryover rate relative to the second predetermined liquid carryover rate means that the difference between the second liquid carryover rate expressed as a percentage and the second predetermined liquid carryover rate expressed as a percentage is 5%.

[0103] The second predetermined liquid carrying rate is, for example, any value between 30% and 150%.

[0104] Let P1 represent the initial pressure of the first pressing unit on the target object, corresponding to fabric type M (representing a fabric type). Then, for every 5% increase in the second liquid carryover rate relative to the second predetermined liquid carryover rate, the pressing pressure of the first pressing unit on the target object increases by 0.1 MPa. That is, when the second liquid carryover rate exceeds the second predetermined liquid carryover rate by 10%, the pressing pressure of the first pressing unit on the target object increases by 0.2 MPa. It is worth noting that at the first pressing unit 102, a higher pressing pressure can reduce the liquid carryover rate of the target object 201; conversely, a lower pressing pressure can increase the liquid carryover rate of the target object 201.

[0105] Through this operation, the target object 201 can be made to have a basic liquid carry ratio by using the first rolling unit 102, for example.

[0106] Regarding the fabric applicator roller 106, the fabric applicator roller 106 is positioned behind the second liquid rate detection unit 103 according to the direction in which the target object is conveyed, and the fabric applicator roller 106 is configured to roll against the target object 201.

[0107] The control unit is also configured to determine the initial pressure of the fabric-applying roller 106 for rolling the target object 201 based on the type of the target object 201.

[0108] For example, the initial pressure of the first rolling unit for the target object is represented by P1, which is M (representing a fabric type).

[0109] It is worth noting that by using the fabric-applying roller 106, the target object 201 can be made to flatly adhere to the guide belt 114 of the conveyor, in preparation for printing and dyeing (e.g., printing).

[0110] After the target object 201 is dyed by the dyeing unit 104, the dyed target object 201 is rolled by, for example, the second rolling unit 107.

[0111] It is worth noting that in some printing and dyeing processes, one side (e.g., the upper surface) of the target object 201 is colored, and that side has undried dye (ink). In some processes, both sides of the target object 201 are colored, and both sides have undried dye (ink).

[0112] Regarding the second rolling unit 107, the second rolling unit 107 is located behind the dyeing unit 104 according to the direction in which the target object is conveyed, and the second rolling unit 107 is configured to roll the target object 201.

[0113] Figure 8 A schematic diagram of the structure of a second rolling unit 107 according to an embodiment of the present disclosure is shown. The second rolling unit 107 includes, for example, a first roll 171, a second roll 172, and a cleaning unit.

[0114] The second roll 172 cooperates with the first roll 171 to roll a target object 201 between the first roll 171 and the second roll 172. For example, the first roll 171 is disposed above the second roll 172.

[0115] The cleaning unit cooperates with at least one of the first roll 171 and the second roll 172 to remove liquid from the surface of at least one of the first roll 171 and the second roll 172.

[0116] It is worth noting that when one side (e.g., the upper surface) of the target object 201 is colored and that side has undried dye (ink), for example, the cleaning unit cooperates with the first roller 171. When both sides of the target object 201 are colored and both sides have undried dye (ink), for example, two cleaning units can be provided, with the two cleaning units cooperating with the first roller 171 and the second roller 172 respectively.

[0117] At least one of the first roll 171 and the second roll 172 is, for example, a highly polished water-repellent roll. At least one of the first roll 171 and the second roll 172 is configured to have a surface smoothness greater than a predetermined smoothness. At least one of the first roll 171 and the second roll 172 is configured to have a Teflon film coating on its surface. For example, the polish of at least one of the first roll 171 and the second roll 172 is greater than a predetermined polish (i.e., the surface roughness is less than a predetermined surface roughness). The polish (or surface roughness) can be evaluated, for example, with reference to the profile arithmetic mean deviation (Ra). In some embodiments, the profile arithmetic mean deviation of at least one of the first roll 171 and the second roll 172 is less than or equal to 0.2 micrometers, i.e., Ra ≤ 0.2 μm, thereby forming a highly polished surface. For example, at least one of the first roll 171 and the second roll 172 is made of a water-repellent material. This reduces the likelihood of dye (ink) adhering to the rolls when rolling over the target object 201.

[0118] It is worth noting that the first rolling unit 102 and the fabric-applying roller 106 may also have similar structural characteristics to the second rolling unit 107 in order to reduce the sticking of slurry during the rolling process on the target object 201.

[0119] The cleaning unit includes a spray unit 173 and a scraper 174. The spray unit 173 is configured to spray cleaning fluid onto at least one of the first and second rollers; the scraper 174 is configured to scrape off liquid from the surface of at least one of the first and second rollers. The cleaning unit also includes, for example, a brush, a drip tray, and a drain pipe. Using the cleaning unit, liquid (e.g., ink) on the surface of the first and / or second rollers can be removed in real time, preventing ink adhering to the rollers from contaminating the target object 201 during rolling.

[0120] Regarding the second rolling unit 107, the second rolling unit 107 is located behind the first liquid rate detection unit 109 according to the direction in which the target object is conveyed, and the second rolling unit 107 is configured to roll the target object.

[0121] Regarding the third liquid rate detection unit 110, the third liquid rate detection unit 110 is located behind the second rolling unit 107 according to the direction in which the target object is conveyed. The third liquid rate detection unit 110 is configured to detect the third liquid rate of the target object 201.

[0122] The control unit is also configured to determine the initial pressure of the second rolling unit for rolling the target object according to the pattern corresponding to the pattern to be printed, and to adjust the pressure of the second rolling unit for rolling the target object according to the first liquid carry-over rate, so that the first liquid carry-over rate conforms to the first predetermined liquid carry-over rate.

[0123] For example, in response to determining that the first liquid carry ratio is greater than the first predetermined liquid carry ratio, the control unit reduces the pressure of the second rolling unit rolling the target object, and in response to determining that the first liquid carry ratio is less than the first predetermined liquid carry ratio, the control unit increases the pressure of the second rolling unit rolling the target object.

[0124] For example, when the first liquid carry ratio exceeds the first predetermined liquid carry ratio by 5%, the pressure of the second rolling unit for rolling the target object is reduced by 0.1 MPa, and when the first liquid carry ratio decreases by 5% relative to the first predetermined liquid carry ratio, the pressure of the second rolling unit for rolling the target object is increased by 0.1 MPa.

[0125] For example, taking a first predetermined liquid content of 70% as an example, the initial pressure of the second rolling unit 107 for rolling the target object 201 is, for example, 0.4 MPa. When the first liquid content is 75%, the initial pressure of the second rolling unit 107 for rolling the target object 201 is set to, for example, 0.3 MPa; when the first liquid content is 80%, the initial pressure of the second rolling unit 107 for rolling the target object 201 is set to, for example, 0.2 MPa; when the first liquid content is 65%, the initial pressure of the second rolling unit 107 for rolling the target object 201 is set to, for example, 0.5 MPa; and when the first liquid content is 60%, the initial pressure of the second rolling unit 107 for rolling the target object 201 is set to, for example, 0.6 MPa.

[0126] In some embodiments, for example, if the pattern to be printed is a fine pattern, the control unit determines that the initial pressure of the second rolling unit 107 rolling the target object 201 is any value between 0.3 and 0.5 MPa. Based on this, when the first liquid carry-over rate exceeds the first predetermined liquid carry-over rate by 5%, the pressure of the second rolling unit rolling the target object is reduced by 0.1 MPa; and when the first liquid carry-over rate decreases by 5% relative to the first predetermined liquid carry-over rate, the pressure of the second rolling unit rolling the target object is increased by 0.1 MPa.

[0127] In some embodiments, for example, if the pattern to be printed is a conventional pattern, the control unit determines that the initial pressure of the second rolling unit 107 rolling the target object 201 is any value between 0.5 and 0.7 MPa. Based on this, when the first liquid carry-over rate exceeds the first predetermined liquid carry-over rate by 5%, the pressure of the second rolling unit rolling the target object is reduced by 0.1 MPa; and when the first liquid carry-over rate decreases by 5% relative to the first predetermined liquid carry-over rate, the pressure of the second rolling unit rolling the target object is increased by 0.1 MPa.

[0128] It is worth noting that, regarding the adjustment of the rolling pressure of the second rolling unit 107, when the first liquid carryover rate is too high, reducing the rolling pressure of the second rolling unit 107 can effectively prevent the pattern printed on the target object 201 from bleeding. When the first liquid carryover rate is too low, increasing the rolling pressure of the second rolling unit 107 can effectively enhance the penetration of dye (ink) on the target object 201, thereby achieving high-penetration printing and dyeing production.

[0129] It is worth noting that by using the second pressing unit 107, the penetration effect of dye (ink) on the target object 201 can be improved, reducing the whitening of the back of the target object 201. In addition, the second pressing unit 107 can also ensure that the target object 201 is evenly attached to the guide belt 114 at the dyeing station, reducing the impact of tension caused by the direction of transmission (fabric direction) of the target object 201.

[0130] In some embodiments, after the target object 201 passes through the second rolling unit 107, it can be directly transferred to the drying unit 105 for drying using a conveying device, so as to improve production efficiency.

[0131] Furthermore, according to the scheme disclosed herein, printing and dyeing operations can be performed after sizing the target object 201 without drying. That is, printing and dyeing operations can be performed when the target object 201 is in a wet state (e.g., with a certain liquid content) without drying. By utilizing the wet state of the target object 201, the dyeing agent (e.g., ink, dye, etc.) can be promoted to penetrate into the interior of the target object 201, thus achieving high-penetration printing and dyeing production.

[0132] In some embodiments, the drying unit 105 includes a first drying unit 151 and a second drying unit 152.

[0133] Regarding the first drying unit 151, the first drying unit 151 is located behind the dyeing and printing unit 104 according to the direction in which the target object is conveyed. The first drying unit 151 is configured to perform a non-contact pre-drying operation on the target object 201.

[0134] The control unit is also configured to adjust the temperature of the first drying unit 151 according to the third liquid carryover rate.

[0135] For example, the control unit increases the temperature of the first drying unit 151 in response to determining that the third liquid carrying rate is greater than the third predetermined liquid carrying rate, and decreases the temperature of the first drying unit 151 in response to determining that the third liquid carrying rate is less than the third predetermined liquid carrying rate.

[0136] For example, in some embodiments, the reference temperature for the non-contact pre-drying of the target object 201 by the first drying unit 151 is, for example, A, which is, for example, a value between 60 and 100°C. When the third liquid carry-over rate is greater than the third predetermined liquid carry-over rate, for example, the control unit increases the temperature of the first drying unit 151 by 5 to 10°C; when the third liquid carry-over rate is less than the third predetermined liquid carry-over rate, for example, the control unit decreases the temperature of the first drying unit 151 by 5 to 10°C.

[0137] Regarding the second drying unit 152, it is positioned behind the first drying unit 151 according to the direction in which the target object is conveyed. The second drying unit 152 is configured to perform a drying operation on the target object 201. The drying performed by the second drying unit 152 is, for example, shaping drying, at a temperature, for example, between 60 and 150°C.

[0138] It is worth noting that the printing and dyeing equipment 100 can be used to implement online high-penetration digital printing / dyeing processes and devices, and is especially suitable for online wet printing, high-penetration printing and anti-bleeding printing production of cotton, linen, polyester, nylon and blended fabrics.

[0139] Figure 9 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown. Figure 10 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown. Figure 11 A schematic diagram of a synchronization detection unit according to an embodiment of the present disclosure is shown.

[0140] The synchronous detection unit includes a floating roller 601, a first position detection device 602, and a second position detection device 603.

[0141] The floating roller 601 is disposed between the first rolling unit 102 and the second rolling unit 107, and floats along with the upper surface of the target object 201.

[0142] The first position detection device 602 is disposed between the first rolling unit 102 and the second rolling unit 107, and corresponds to the first height.

[0143] The second position detection device 603 is disposed between the first rolling unit 102 and the second rolling unit 107, and corresponds to the second height, while the first height is higher than the second height.

[0144] The first position detection device 602 and the second position detection device 603 are, for example, position sensors, infrared sensors, etc.

[0145] The control unit is also configured to, when the first position detection device 602 detects the floating roller 601, control the first rolling unit 102 to increase the transmission rate with respect to the target object 201 or control the second rolling unit 107 to decrease the transmission rate with respect to the target object 201; and when the second position detection device 603 detects the floating roller 601, control the first rolling unit 102 to decrease the transmission rate with respect to the target object 201 or control the second rolling unit 107 to increase the transmission rate with respect to the target object 201.

[0146] It is worth noting that the floating roller 601 has its own gravity or counterweight. When the floating roller 601 is close to the target object 201, it floats along with the upper surface of the target object 201.

[0147] by Figure 9 For example, when the transmission rate of the second rolling unit 107 with respect to the target object 210 and the transmission rate of the first rolling unit 102 with respect to the target object 201 are synchronized, the floating roller 601 is at a suitable height, and neither the first position detection device 602 nor the second position detection device 603 can detect the floating roller 601. At this time, the control unit determines that the transmission rate of the second rolling unit 107 with respect to the target object 210 and the transmission rate of the first rolling unit 102 with respect to the target object 201 are synchronized, and therefore maintains the transmission rates of the second rolling unit 107 with respect to the target object 210 and the first rolling unit 102 with respect to the target object 201 without intervention.

[0148] Reference Figure 10 When the transmission rate of the second rolling unit 107 with respect to the target object 210 is too slow relative to the transmission rate of the first rolling unit 102 with respect to the target object 201, the tension of the target object 201 is too low, and the roller body of the floating roller 601 moves to a lower position. For ease of understanding, Figure 10 The floating roller 601 is indicated by a dashed line as being in the appropriate position (i.e., the position of the floating roller 601 when the transmission rate of the first rolling unit 102 with respect to the target object 201 is synchronized with the transmission rate of the second rolling unit 107 with respect to the target object 201). When the second position detection device 603 detects the floating roller 601, it indicates that the transmission rate of the second rolling unit 107 with respect to the target object 210 is too slow relative to the transmission rate of the first rolling unit 102 with respect to the target object 201. Therefore, the control unit controls the first rolling unit 102 to reduce its transmission rate with respect to the target object 201 or controls the second rolling unit 107 to increase its transmission rate with respect to the target object 201, so that the transmission rates of the first rolling unit 102 with respect to the target object 201 are synchronized with the transmission rates of the second rolling unit 107 with respect to the target object 201.

[0149] Reference Figure 11When the transmission rate of the second rolling unit 107 with respect to the target object 210 is too fast relative to the transmission rate of the first rolling unit 102 with respect to the target object 201, the tension of the target object 201 becomes too high, and the roller body of the floating roller 601 moves to a higher position. For ease of understanding, Figure 11 The floating roller 601, indicated by a dashed line, is in a suitable position (i.e., the position of the floating roller 601 when the transmission rate of the first rolling unit 102 with respect to the target object 201 is synchronized with the transmission rate of the second rolling unit 107 with respect to the target object 201). When the first position detection device 602 detects the floating roller 601, it indicates that the transmission rate of the second rolling unit 107 with respect to the target object 210 is too fast relative to the transmission rate of the first rolling unit 102 with respect to the target object 201. Therefore, the control unit controls the first rolling unit 102 to increase its transmission rate with respect to the target object 201 or controls the second rolling unit 107 to decrease its transmission rate with respect to the target object 201, so that the transmission rate of the first rolling unit 102 with respect to the target object 201 is synchronized with the transmission rate of the second rolling unit 107 with respect to the target object 201.

[0150] The printing and dyeing equipment 100, for example, uses a sizing padding car 111 for sizing tank padding, a fabric-applying roller 106 for fabric-feeding end pressing, a printing and dyeing unit 104 for rotary screen / digital printing (dyeing), a second pressing unit 107 for fabric-feeding end pressing, and a drying unit 105 for segmented drying, thereby realizing an online integrated process. Through three pressure gradients (e.g., corresponding to the pressing pressure of the first pressing unit 102, the pressing pressure of the fabric-applying roller 106, and the pressing pressure of the second pressing unit 107 respectively), it achieves precise control of the liquid retention rate in four stages: Q1 (e.g., characterizing the liquid retention rate after sizing tank padding, i.e., the liquid retention rate of the target object after passing through the first pressing unit 102) → Q2 (fine-tuning at the fabric-feeding end, i.e., the liquid retention rate of the target object after pressing with the fabric-applying roller 106) → Q3 (after inkjet printing, i.e., the liquid retention rate of the target object after printing and dyeing by the printing and dyeing unit) → Q4 (Final liquid control at the fabric exit end, i.e., the liquid retention rate of the target object after rolling in the second rolling unit 107).

[0151] Furthermore, by relying on highly polished water-repellent rollers (such as the first and second rollers) and combined with pressure adjustment, the surface slurry and ink of the fabric are pressed into the fabric or onto the guide belt, achieving fine adjustment of the liquid rate, vertical ink penetration, while preventing horizontal ink penetration and color bleeding.

[0152] In some embodiments, the slurry viscosity is, for example, 1 to 2000 mPa·s (millipascals per second).

[0153] In some embodiments, the control unit adjusts the pressure of the first rolling unit for rolling the target object according to the viscosity of the slurry from the slurry application device.

[0154] In some embodiments, the control unit adjusts the pressure of the second rolling unit for rolling the target object according to the printing speed of the printing and dyeing unit.

[0155] In some embodiments, the control unit adjusts the pressure of the second rolling unit for rolling the target object according to the ink output of the printing and dyeing unit.

[0156] At the printing and dyeing unit 104, rotary screen printing combined with digital printheads and pattern conditions can be used to control the liquid carry rate to be close to the first predetermined liquid carry rate.

[0157] The positioning scanning device 142 can scan for specified pattern requirements and then position and print them in the digital printing area.

[0158] It is worth noting that the high-polish water-repellent roller is designed for pure pressure liquid control: it does not stick to the slurry, does not absorb slurry, requires no complicated recycling, and is suitable for compact spaces with guide belts.

[0159] This dyeing and printing equipment 100 automatically adjusts pressure based on liquid content, ink volume, and fabric type, and features intelligent process characteristics.

[0160] This dyeing and printing equipment 100 can achieve online integrated operation: no pre-drying, continuous operation, high efficiency, high penetration, and high precision are achieved simultaneously.

[0161] This printing and dyeing equipment 100 can perform high-penetration printing on-line, enabling high-penetration, high-precision, continuous, and efficient online printing production. By using an online padding method for sizing, the pre-drying process is eliminated, allowing the fabric to directly enter the digital printing unit after sizing, effectively improving production efficiency and sizing penetration. Combined with a dedicated padding device and rollers made of special materials, structural design avoids problems such as color mixing and sizing dragging, ensuring stable and reliable printing quality.

[0162] This printing and dyeing equipment 100 realizes online digital printing processes, including processes such as padding and sizing, pressing (roller), rotary screen printing, positioning scanning, inkjet (registration printing), through-processing, and drying. The specific operational requirements for each process are as follows: Sizing is performed online using pad-on equipment (such as sizing padding machine 111), eliminating the need for offline processing. Fabric sizing is completed directly on the production line, allowing for direct printing / dyeing without drying. The padding machine pressure is adjustable from 0-1000 N / cm, and the fabric liquid retention rate is adjustable (range 30%-100%). The sizing speed is matched to the printing speed and controlled between 0-100 m / min.

[0163] The pressing device includes, for example, a fabric-applying roller 106 and a second pressing unit 107. The fabric-applying roller 106 is, for example, located at the fabric inlet unit of the printing guide belt to ensure that the fabric and the guide belt are fully bonded. The second pressing unit 107 is, for example, located at the fabric outlet unit of the printing guide belt. This device presses the fabric, which not only ensures that the two are fully bonded, but also allows the paste or ink to be evenly pressed into the fabric.

[0164] The composition of the rolling device (e.g., first rolling unit 102, fabric application roller 106, second rolling unit 107): For example, the upper roller (e.g., the first roller) is made of a highly polished and water-repellent material, so that when it comes into contact with wet paste fabric or fabric that has not been dried after printing, the paste or dye will not stick to the roller, causing paste smudging or color bleeding.

[0165] The lower roll (e.g., the second roll) can be made of rubber or stainless steel to provide sufficient support.

[0166] The roll pressure is adjustable, and the actual parameters are determined according to the process requirements, with a pressure range of 0-0.8MPa.

[0167] The rolling device is height-adjustable, allowing for convenient cleaning of the rolling unit. The cleaning unit includes components such as spray pipes, brushes, scrapers, water trays, and drain pipes.

[0168] Regarding the printing and dyeing unit 104, after the fabric dipped in the paste passes through the pressing device on the fabric feeding unit, it can first undergo rotary screen printing (or be set to be required or omitted according to process requirements). Then, the jacquard pattern or rotary screen printing pattern of the fabric is positioned and scanned (whether to use it can be determined according to the pattern requirements). Then, inkjet printing (or positioning printing) is performed. Then, the fabric is fed out of the pressing device of the fabric feeding unit (increasing the penetration of dye on the reverse side of the fabric). Multifunctional printing processes can be realized on the same production line, and the production process is simplified.

[0169] The drying process after printing is carried out in a flat, suspended, segmented manner, consisting of two stages: pre-drying and final drying. In some embodiments, during segmented drying, the pre-drying temperature is controlled at 60-100℃, and the final drying temperature is controlled at 60-220℃.

[0170] The sizing agent used for coating consists of a paste, penetrant, humectant, pH adjuster, deionized water, etc. The paste can be modified starch, CMC (carboxymethyl cellulose binder) or sodium alginate, etc.

[0171] Inkjet printing inks can be selected from reactive, disperse, acid, or coating inks, as well as blank inks.

[0172] Rotary screen printing can be used for printing on special materials such as white paste, color paste, pearlescent powder, gold and silver powder, and hot stamping.

[0173] The printing and dyeing equipment 100 is suitable for printing and processing various fabrics such as knitted and woven fabrics made of natural fibers, synthetic fibers and their blends.

[0174] After printing, the fabric can be post-processed as needed, including one or more of the following: color fixing, washing, and softening treatment.

[0175] The entire process of the dyeing and printing equipment 100 is continuous and coherent, taking into account both high penetration effect and fine pattern, and is suitable for mass production needs.

[0176] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

[0177] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A dyeing and printing device for a target object, characterized in that, include: The sizing device is configured to sizing a target object; The first rolling unit is configured to roll the target object after sizing. The first rolling unit and the sizing device are either integrated or separately arranged along the transport direction of the target object. The detection unit is configured to detect at least one of the following: the position of the target object, the floating distance, the transmission rate, and the tension. The printing and dyeing unit is configured to print and dye a target object that has been rolled by the first rolling unit; The drying unit is configured to dry the target object; as well as The control unit is configured to control at least one of the first rolling unit and the dyeing unit based on at least one of the detection results regarding the position of the target object, the floating distance, the transmission rate, and the tension, so that the transmission rate of the first rolling unit with respect to the target object is matched with the dyeing speed of the dyeing unit.

2. The printing and dyeing equipment according to claim 1, characterized in that, Also includes: The second rolling unit is configured to roll the target object after printing and dyeing, and the second rolling unit is disposed between the printing and dyeing unit and the drying unit. The control unit is further configured to: control at least one of the first rolling unit and the second rolling unit based on the detection results of at least one of the target object's position, floating distance, transmission rate, and tension, such that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object; The sizing device includes a sizing tank.

3. The dyeing and printing equipment according to claim 2, characterized in that, Also includes: The first liquid carrying rate detection unit is located behind the dyeing and printing unit according to the direction in which the target object is conveyed. The first liquid carrying rate detection unit is configured to detect the first liquid carrying rate of the target object. The control unit is also configured to determine the initial pressure of the second rolling unit for rolling the target object according to the pattern corresponding to the pattern to be printed, and to adjust the pressure of the second rolling unit for rolling the target object according to the first liquid carry-over rate, so that the first liquid carry-over rate meets the first predetermined liquid carry-over rate.

4. The printing and dyeing equipment according to claim 3, characterized in that, Printing and dyeing equipment also includes: The second liquid rate detection unit is located behind the first rolling unit, and the second liquid rate detection unit is configured to detect the second liquid rate of the target object; The control unit is further configured to determine the initial pressure of the first rolling unit for rolling the target object according to the type of the target object, and to adjust the pressure of the first rolling unit for rolling the target object according to at least the second liquid ratio, so that the second liquid ratio conforms to the second predetermined liquid ratio.

5. The dyeing and printing equipment according to claim 4, characterized in that, The second rolling unit includes: First roll; The second roll, in conjunction with the first roll, is used to roll a target object between the first and second rolls; and One or more cleaning units cooperate with at least one of the first roll and the second roll to remove liquid from the surface of at least one of the first roll and the second roll.

6. The printing and dyeing equipment according to claim 4, characterized in that, Also includes: The third liquid rate detection unit is located behind the second rolling unit according to the direction in which the target object is conveyed. The third liquid rate detection unit is configured to detect the third liquid rate of the target object. The drying unit includes: a first drying unit, which is located behind the dyeing and printing unit according to the direction in which the target object is conveyed; the first drying unit is configured to perform a non-contact pre-drying operation on the target object. The control unit is also configured to adjust the temperature of the first drying unit according to the third liquid carryover rate.

7. The dyeing and printing equipment according to claim 6, characterized in that, The drying unit also includes: The second drying unit is located behind the first drying unit, according to the direction in which the target object is conveyed. The second drying unit is configured to perform drying operations on the target object.

8. The dyeing and printing equipment according to claim 7, characterized in that, The control unit is also configured to be at least one of the following: In response to determining that the second liquid carry ratio is greater than the second predetermined liquid carry ratio, the pressure of the first rolling unit for rolling the target object is increased; and in response to determining that the second liquid carry ratio is less than the second predetermined liquid carry ratio, the pressure of the first rolling unit for rolling the target object is decreased. In response to determining that the first liquid carry-over rate is greater than the first predetermined liquid carry-over rate, the pressure of the second rolling unit rolling the target object is reduced; and in response to determining that the first liquid carry-over rate is less than the first predetermined liquid carry-over rate, the pressure of the second rolling unit rolling the target object is increased. as well as In response to determining that the third liquid carry-over rate is greater than the third predetermined liquid carry-over rate, the temperature of the first drying unit is increased; and in response to determining that the third liquid carry-over rate is less than the third predetermined liquid carry-over rate, the temperature of the first drying unit is decreased.

9. The dyeing and printing equipment according to claim 5, characterized in that, The cleaning unit includes: The spray unit is configured to spray cleaning fluid onto at least one of the first roll and the second roll; and A scraper is configured to scrape liquid from the surface of at least one of the first roll and the second roll.

10. The dyeing and printing equipment according to claim 5, characterized in that, At least one of the first roll and the second roll is configured to have a surface smoothness greater than a predetermined smoothness.

11. The dyeing and printing equipment according to claim 10, characterized in that, At least one of the first roll and the second roll is configured to be at least one of the following: The arithmetic mean deviation of the profile is less than or equal to 0.2 micrometers; and Made of water-repellent material.

12. The dyeing and printing equipment according to claim 8, characterized in that, The control unit is also configured to be at least one of the following: The pressure of the first rolling unit for rolling the target object is adjusted according to the viscosity of the slurry in the slurry feeding device. The pressure of the second rolling unit for rolling the target object is adjusted according to the printing speed of the printing and dyeing unit. as well as The pressure of the second rolling unit for rolling the target object is adjusted according to the ink output of the printing and dyeing unit.

13. The dyeing and printing equipment according to claim 12, characterized in that, The detection unit includes: A floating roller is positioned between the first and second rolling units and floats along with the upper surface of the target object. A first position detection device is disposed between the first rolling unit and the second rolling unit, and corresponds to the first height; and The second position detection device is disposed between the first rolling unit and the second rolling unit, and corresponds to the second height, where the first height is higher than the second height; The control unit is also configured as follows: When the first position detection device detects the floating roller, the control unit controls the first rolling unit to increase the transmission rate with respect to the target object or controls the second rolling unit to decrease the transmission rate with respect to the target object; and When the second position detection device detects the floating roller, the control unit controls the first rolling unit to reduce the transmission rate of the target object or controls the second rolling unit to increase the transmission rate of the target object.

14. The dyeing and printing equipment according to claim 12, characterized in that, The detection unit includes: A floating roller is positioned between the first and second rolling units and floats along with the upper surface of the target object. The sensor is configured to detect the floating distance of the floating roller relative to the target position; The control unit is further configured to control at least one of the first rolling unit and the second rolling unit based on the detected floating distance, so that the transmission rate of the first rolling unit with respect to the target object is synchronized with the transmission rate of the second rolling unit with respect to the target object.

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