CN217753163U - Transfer dyeing device - Google Patents

Abstract

The present disclosure relates to a transfer dyeing apparatus for dyeing a surface of an ultra-thin cloth, including: a housing; a movable base which can be guided on a guide rail on the housing to perform linear movement; a pair of transfer dye sets comprising two transfer dye sets symmetrically arranged about the fabric, a first transfer dye set being movable along and towards or away from a second transfer dye set by the mobile base, each transfer dye set comprising: transfer rollers, the transfer rollers in each transfer dye set pair being disposed adjacent to each other; a printing roller which is respectively arranged at the outer side of the transfer roller opposite to the cloth and comprises a covering layer positioned on the radial outer surface, and a mesh hole part with the density of more than or equal to 200 meshes is formed on the surface of the covering layer; and a pressure regulating device configured to be associated with the form roll. The transfer dyeing device is beneficial to improving the dyeing uniformity of ultra-thin cloth, reducing the occurrence of local ink accumulation and improving the problem of vertical bar dark print.

Description

Transfer dyeing device

Technical Field

The utility model belongs to the technical field of the fabric printing device and specifically relates to a shift dyeing apparatus is related to.

Background

With the progress and development of society, the quality of life of the public is improved, and consumers tend to buy down jackets made of light nylon fabrics more and more. Currently, down jackets with ultra-thin nylon fabrics are available on the market. The gram weight of the fabric of the down jacket is only 20D, the total mass is only 90-120 g, the down jacket is very light, and meanwhile, the warmth retention property is not sacrificed, so that the down jacket is very popular with consumers.

The transfer dyeing technology is a common dyeing technology, has advantages in the aspects of productivity, down penetration prevention effect of products, suture slippage rate, tearing strength and the like, and is a better optional method for dyeing ultrathin nylon fabrics.

SUMMERY OF THE UTILITY MODEL

In the actual production process, the applicant finds that the existing transfer dyeing equipment has better dyeing effect on the thicker nylon fabric with the gram weight of more than 40D in the transfer dyeing process of the nylon fabric, but still has an improvement space; when transfer dyeing is performed on a thin fabric, for example, an ultrathin nylon fabric with a gram weight of about 20D, problems such as dark vertical line marks on the fabric surface, uneven dyeing, local ink accumulation and the like occur. These problems can affect the quality and effectiveness of the dyeing and adversely affect the overall product.

Accordingly, the present invention aims to provide an improved transfer dyeing apparatus which enables improved dyeing quality, particularly in the case of thin fabrics.

In a first aspect of the present disclosure, there is provided a transfer dyeing apparatus for dyeing a surface of a cloth, the transfer dyeing apparatus including:

a housing;

a movable base that can be guided on a guide rail provided on the housing to perform linear movement;

at least one transfer dye set pair disposed within the housing, each transfer dye set pair comprising two transfer dye sets symmetrically arranged about a fabric, wherein a first transfer dye set of each transfer dye set pair is mounted on the moving base and a second transfer dye set of each transfer dye set pair is mounted on the housing, wherein the first transfer dye set is movable toward or away from an opposing second transfer dye set by movement of the moving base along a guide, wherein each transfer dye set comprises:

-transfer rollers, wherein the two transfer rollers in each transfer dye set pair are arranged adjacent to each other and are rotatable in opposite directions;

-a printing roll, wherein the two printing rolls of each transfer dye group pair are respectively arranged on the outer side of the transfer roll opposite to the cloth and are configured to rotate in opposite directions to the adjacent transfer roll, the printing rolls comprise a covering layer on the radial outer surface, the surface of the covering layer is formed with uniform mesh openings, and the density of the mesh openings is greater than or equal to 200 meshes;

a pressure regulating device configured to be associated with the associated printing roller to regulate the pressure with which the associated printing roller bears against the associated transfer roller, wherein the pressure regulating device is able to selectively move the associated printing roller into a pressing position, in which the associated printing roller bears against the transfer roller, thereby generating a pressure with which the associated printing roller bears against the associated transfer roller, or into a rest position, in which the associated printing roller does not bear against the associated transfer roller.

The transfer dyeing device can help to improve the dyeing uniformity of the ultrathin cloth, reduce the occurrence of local ink accumulation and improve the problem of vertical bar dark print.

According to some embodiments of the disclosure, the mesh point density is equal to or greater than 240 mesh.

According to some embodiments of the disclosure, the cover layer is an electroplated layer.

According to some embodiments of the present disclosure, the spacing between the two transfer rollers in each transfer dye set pair is set to match the cloth under 20D.

According to some embodiments of the present disclosure, the number of the transfer dye pair groups is at least two, and each transfer dye pair group is arranged in a straight line one after another along the movement direction of the cloth.

According to some embodiments of the present disclosure, each first transfer dye set is mounted on the same mobile base or on a plurality of different mobile bases.

According to some embodiments of the present disclosure, the transfer dyeing apparatus further comprises a dye supply assembly disposed outside the printing roll and comprising an axial seal and two end seals forming, with the surface of the printing roll, a closed dye chamber.

According to some embodiments of the present disclosure, the printing roller comprises a connecting column and a main body carrying the cover layer, wherein the connecting column extends through the main body and comprises a first stub shaft and a second stub shaft respectively provided at both ends for mounting onto the mobile base or the housing respectively.

According to some embodiments of the present disclosure, the transfer dyeing apparatus further comprises a displacement mechanism mounted on the housing, the displacement mechanism being configured to drive the moving base in a linear motion along the guide rail.

According to some embodiments of the present disclosure, the pressure adjusting devices are located at both ends in the axial direction of the respective plate rolls.

According to some embodiments of the present disclosure, the pressure adjustment device includes an actuator connected to the housing and a sleeve fitted over the plate roll, the sleeve being configured to be eccentric and capable of being driven in rotation by the actuator, thereby enabling the plate roll to transition between a rest position and a rest position.

According to some embodiments of the present disclosure, the actuator includes a cylinder and a piston rod that is driven by the cylinder to move linearly, the pressure adjusting device further includes a first link pivotally connected with the piston rod at a first hinge and pivotally connected to the housing by a pivot, and a second link pivotally connected with the second link at a second hinge and pivotally connected to the sleeve by a third hinge, such that the actuator can rotate the sleeve by driving the piston rod.

According to some embodiments of the disclosure, the pivot is located at a middle position of the first link.

According to some embodiments of the present disclosure, the first hinge is located at a first end of the first link, the second hinge is located at a second end of the first link and a first end of the second link, and the third hinge is located at a second end of the second link.

According to some embodiments of the present disclosure, the transfer dyeing apparatus includes a control device mounted on the housing and including a processor and a first sensor connected to the processor, the first sensor being disposed on a path of passage of the cloth and configured to measure a moving speed of the cloth, the processor being configured to adjust the moving speed in response to the moving speed measured by the first sensor.

According to some embodiments of the present disclosure, the control device includes a second sensor coupled to the processor, the second sensor being disposed on one of the two transfer rollers of a transfer dye pair and configured to measure a pressure between the two transfer rollers of the transfer dye pair.

According to some embodiments of the present disclosure, the control device includes a third sensor connected to the processor, the third sensor being disposed in the dye supply assembly and configured to measure a supply amount of dye.

According to some embodiments of the disclosure, the processor is configured to be able to adjust the moving speed to 20 to 30m/s, more preferably to 25m/s.

According to some embodiments of the disclosure, the number of transfer dye pair groups is four.

According to some embodiments of the present disclosure, the transfer roller is made of an elastic material.

According to some embodiments of the disclosure, the electroplated layer is a chrome plating.

According to some embodiments of the disclosure, the displacement mechanism can be driven manually or electrically.

According to some embodiments of the disclosure, the processor is configured to control the dye supply amount to 1 to 3g/m ² 。

According to some embodiments of the present disclosure, the transfer dyeing apparatus further comprises a display device mounted on the housing, the display device being connected with the control device by wire or wirelessly and configured to display the value of the moving speed measured by the first sensor, and/or the value of the pressure measured by the second sensor, and/or the value of the dye supply amount measured by the third sensor.

Additional features and advantages of the subject technology will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the subject technology. The advantages of the subject technology will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the subject technology as claimed.

Drawings

Advantages of the respective embodiments, as well as various additional embodiments, will become apparent to persons skilled in the art upon reading the following detailed description of the respective embodiments and by referring to the drawings set forth below. Furthermore, the various features of the drawings discussed below are not necessarily drawn to scale. Dimensions of various features and elements in the drawings may be expanded or reduced to more clearly illustrate the embodiments of the invention.

Fig. 1 is a schematic view of a transfer dyeing apparatus according to one embodiment of the present disclosure, in which a plurality of transfer dyeing group pairs are shown.

Fig. 2 is a schematic end view of one transfer dye set pair in a transfer dye device according to one embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional view of a plate roll in a transfer dyeing apparatus according to one embodiment of the present disclosure.

Detailed Description

Various illustrative embodiments of the invention are described below. In this specification, various systems, structures and devices are schematically depicted in the drawings for purposes of explanation only and so as to not describe all features of an actual system, structure or device, such as a well-known function or structure, in detail as not to obscure the present invention. It will of course be appreciated that in the development of any such actual implementation, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another.

Moreover, it will be appreciated that such implementation decisions, while complex and time consuming, are nevertheless routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

The terms and phrases used herein should be understood and interpreted to have a meaning consistent with the understanding of those terms and phrases by those skilled in the relevant art. No special definition of a term or phrase, i.e., a definition that is different from the ordinary and customary meaning as understood by those skilled in the art, is intended to be implied by consistent usage of the term or phrase herein. To the extent that a term or phrase is intended to have a special meaning, i.e., a meaning other than that understood by skilled artisans, such a special definition will be expressly set forth in the specification in a definitional manner that directly and unequivocally provides the special definition for the term or phrase.

Throughout the following description, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be interpreted in an open, inclusive sense, i.e., as "including but not limited to".

Throughout the description of the specification, references to the description of the term "an embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As used in this specification, the singular forms "a", "an", and "the" include one or more of the referents unless the context clearly dictates otherwise. It should also be noted that the term "or" is generally employed in its sense including "and/or" unless expressly stated or limited otherwise. For the purposes of this specification, a phrase in the form of "a or B" means "(a), (B), or (a and B)". For the purposes of this specification, a phrase in the form of "at least one of A, B or C" means "(A), (B), (C), (A and B), (A and C), (B and C) or (A, B and C)".

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "coupled," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present invention, the unit "D" refers to the weight in grams per 9000 meters of the fiber.

Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic view of a transfer dyeing apparatus 1 according to one embodiment of the present disclosure, in which a plurality of transfer dyeing group pairs 10 are shown. Fig. 2 is a schematic end view of one transfer dye set pair 10 in the transfer dye apparatus 1 according to one embodiment of the present disclosure, wherein some additional mechanisms in the transfer dye apparatus 1 are also shown.

As shown in fig. 1 and 2, in some embodiments, the transfer dyeing apparatus 1 may include a housing 30 and at least one transfer dyeing pair 10 disposed within the housing 30. The housing 30 is used to carry the various components of the transfer dyeing apparatus 1. The transfer dye set 10 is used to dye the cloth 2 conveyed therethrough. These pairs of transfer dye pairs 10 may be arranged in a line one after the other. The transfer dyeing apparatus 1 shown in fig. 1 comprises four transfer dyeing group pairs 10. It will be appreciated that in other embodiments not shown, a greater or lesser number of transfer dye pairs 10 may be provided.

As shown in fig. 1, each transfer-dyeing-group pair 10 includes two transfer- dyeing groups 201, 202, and the two transfer- dyeing groups 201, 202 are symmetrically arranged with respect to the cloth 2. Each transfer dye set 201, 202 may include a transfer roll 21 and a form roll 22. Wherein the transfer rollers 21 are arranged adjacent to each other, and the cloth 2 is disposed to pass between the adjacent transfer rollers 21 in the y-axis direction to perform duplex printing. The printing rolls 22 are then respectively arranged at an outer position of each transfer roller 21 opposite to the cloth 2, which is also shown in fig. 2.

During operation, the adjacent two transfer rollers 21 rotate in opposite directions, and the adjacent transfer roller 21 and the form roller 22 rotate in opposite directions. Among them, the transfer roller 21 may be made of an elastic material, and the form roller 22 may be made of a rigid material.

As shown in fig. 2, the transfer dyeing apparatus 1 may further include a dye supply assembly 11 for supplying dye to the roll 22. The dye supply assembly 11 may be arranged outside the printing roll 22 and comprises an axial seal and two end seals (not shown) which, together with the surface of the printing roll 22, may form a closed dye chamber. During dyeing, the plate roller 22 dips the dye in the dye chamber and transfers the dye under a certain pressure to the adjacent transfer roller 21, which transfer roller 21 further transfers the dye to the cloth 2.

Fig. 3 shows a schematic cross-sectional view of a printing roll 22 in the transfer dyeing apparatus 1 according to one embodiment of the present disclosure. As shown in fig. 3, the roll 22 can be configured to include connection posts 23, a main body 24, and a plating layer 25. The electroplated layer 25 is disposed on the radially outer surface of the form roll 22 and can be carried by the main body 24. The attachment post 23 extends through the body 24 and includes a first stub shaft 26 and a second stub shaft 27 disposed at each end. The printing roll 22 can be fixed and mounted by means of a first 26 and a second 27 stub shaft. In some embodiments, the electroplated layer 25 may be a chrome plating. In some embodiments, the surface of the plating layer 25 is formed with a mesh portion. Typically, the mesh-point portions are arranged uniformly on the outer surface of the printing roll 22 to achieve uniform printing of the fabric 2. Preferably, the density of the mesh portion may be set to 200 mesh or more. More preferably, the density of the cell portion may be set to 240 mesh or more. More preferably, the density of the cell portion may be set to 300 mesh or less. Here, the "mesh number" refers to the number of mesh parts per square centimeter. The higher density of the mesh point part can help to improve the dyeing uniformity of the ultrathin cloth and improve the problem of the vertical bar dark print.

As shown in fig. 2, in some embodiments, the transfer dyeing apparatus 1 may include a mobile base 31 mounted on the housing 30. The moving base 31 may be provided to be capable of linear movement guided by a guide rail (not shown) on the housing 30. The moving direction of the moving base 31 may be a direction parallel to the x-axis in fig. 2. As shown in fig. 2, a first transfer dye set 201 of the transfer dye set pair 10 may be mounted on the moving base 31, and a second transfer dye set 202 may be directly mounted on the housing 30, so that the first transfer dye set 201 may be moved away from or close to the second transfer dye set 202 by driving the moving base 31.

Although not shown, it is understood that in some embodiments, each first transfer dye set 201 in each transfer dye set pair 10 may be mounted on the same moving base 31 so that each first transfer dye set 201 can be moved linearly in synchronization. In other embodiments, each first transfer dye set 201 in each transfer dye set pair 10 may also be mounted on a different plurality of moving bases 31, so that each first transfer dye set 201 can be driven to move linearly separately.

The transfer dyeing apparatus 1 may further include a shift mechanism 32 for driving the moving base 31. The displacement mechanism 32 is mounted on the housing 30 and is configured to drive the moving base 31 to perform a linear motion along the x-axis, so as to move the first transfer dye set 201 mounted on the moving base 31 closer to or farther from the second transfer dye set 202 along the x-axis. Typically, the displacement mechanism 32 may be driven by a servo motor or the like. It is conceivable that the displacement mechanism 32 may also be arranged to be driven manually, for example by means of a joystick. In embodiments in which the transfer dyeing apparatus 1 comprises a plurality of mobile bases 31, the transfer dyeing apparatus 1 may comprise a corresponding number of displacement mechanisms 32 to drive each mobile base 31, and thus each first transfer dyeing group 201, respectively.

As further shown in fig. 2, in some embodiments, the transfer dyeing apparatus 1 may further include a pressure regulating apparatus 40. The pressure regulating device 40 can be assigned to the first transfer dye set 201 and/or the second transfer dye set 202. The pressure adjusting device 40 can be used to adjust the pressure of the plate roll 22 against the transfer roll 21 in each transfer dye set. As exemplarily shown in this embodiment, the pressure-regulating device 40 can include an actuator 41 mounted on the housing 30, and a sleeve 42 fitted over the form roll 22. The sleeve 42 may be configured to be eccentric and can be driven to rotate by the actuator 41, so as to be able to control the transition of the printing roller 22 between the pressing position against the transfer roller 23 and the rest position not against the transfer roller 23. It is contemplated that rotation of the sleeve 42 during the pressing of the form roll 22 against the transfer roll 23 can vary the pressure of the form roll 22 against the transfer roll 23, thereby adjusting the amount of dye transferred from the form roll 22 to the transfer roll 23. The pressure-adjusting device 40 may be provided at an end portion in the axial direction of the form roll 22. More advantageously, the pressure-regulating devices 40 may be provided at both end portions in the axial direction of the form roll 22.

In particular, in some embodiments, the actuator 41 may include a cylinder 43 and a piston rod 44. The piston rod 44 can be linearly moved by the driving of the cylinder 43. The pressure adjustment device 40 may also optionally include a first link 45 and a second link 46. The first link 45 may be pivotally connected to the piston rod 44 at a first hinge 51 and pivotally connected to the housing 30 by a pivot 47. In some embodiments, the pivot 47 may be located at a middle position of the first link 45. First link 45 may further be pivotally connected to second link 46 at second hinge 52. The second link 46 may be pivotally connected to the sleeve 42 at a third hinge 53. Each hinge may be located at an end position of the piston rod 44, the first link 45, and the second link 46, respectively.

In some embodiments, each transfer dye set 201, 202 can include a plate roll changer assembly 33, which plate roll changer assembly 33 can be used to change plate rolls 22. In some embodiments, each transfer dye set 201, 202 may further include a transfer roller adjustment assembly 34, which transfer roller adjustment assembly 34 may be used to adjust the position and angle of the transfer roller 23. In some embodiments, each transfer dye set 201, 202 can further include a plate roller adjustment assembly 35, and the plate roller adjustment assembly 35 can include a motor and a corresponding drive mechanism. The plate roll adjustment assembly 35 can be used, among other things, to adjust the axial position of the plate roll 22.

As shown in fig. 2, the transfer dyeing apparatus 1 may include a control device 60 mounted on the housing 30. The control device 60 may include a processor 61, and a first sensor 62 connected to the processor 61. The connection mode can be wired or wireless. The first sensor 62 may be disposed on a passing path of the cloth 2, and may be configured to measure a moving speed of the cloth 2. In some embodiments, the processor 61 may be configured to adjust the speed of movement in response to the speed of movement measured by the first sensor 62. The processor 61 is advantageously configured to adjust the displacement speed to 20 to 30m/s, more advantageously to 25m/s. Such a moving speed is advantageous for relatively uniform dyeing of ultra-thin cloth.

Advantageously, the control means 60 may also comprise a second sensor 63 connected to the processor 61. The connection mode can be wired or wireless. The second sensor 63 may be disposed on at least one transfer roller 23 and may be configured to measure a pressure between the at least one transfer roller 23 and an adjacent transfer roller 23.

Advantageously, the control device 60 may also comprise a third sensor 64 connected to the processor 61. The connection mode can be wired or wireless. The third sensor 64 is disposed in the dye supply assembly 11 and may be configured to measure the amount of dye supplied. In some embodiments, processor 61 may be configured to control the amount of dye supplied to 1 to 3g/m ² . I.e. 1 to 3 grams of dye per square meter of cloth is provided. The lower dye supply amount is beneficial to improving the dyeing uniformity of the ultrathin cloth and reducing the occurrence of the local ink accumulation phenomenon.

As shown in fig. 2, the transfer dyeing apparatus 1 may further include a display device 65 mounted on the housing 30. The display device 65 may be connected to the control device 60 by wire or wirelessly. In some embodiments, the display device 65 may be configured to display the value of the moving speed measured by the first sensor 62. It will be appreciated that the display device 65 may be configured to also display the value of the pressure measured by the second sensor 63, and/or the value of the dye supply amount measured by the third sensor 64.

From the above description, it is clear that, according to the utility model discloses a shift dyeing apparatus 1 can help improving to the cloth, especially thinner cloth, for example about 20D's ultra-thin cloth's dyeing homogeneity, reduces the appearance of local long-pending black phenomenon, improves the problem of vertical retort.

The invention may include any feature or combination of features disclosed either implicitly or explicitly or any generalisation thereof and is not to be limited in any way by the scope of the foregoing list. Any of the described elements, features and/or structural arrangements may be combined in any suitable manner.

The particular embodiments disclosed above are illustrative only, as the invention may be modified and practiced in different but equivalent manners apparent to those skilled in the art having the benefit of the teachings herein. It is apparent that changes and modifications can be made to the specific embodiments disclosed above and all such variations are considered to be within the scope and spirit of the present invention.

Claims (17)

1. A transfer dyeing apparatus for dyeing a surface of a cloth, characterized in that the transfer dyeing apparatus comprises:

a housing;

a movable base that can be guided on a guide rail provided on the housing to perform linear movement;

at least one transfer dye set pair disposed within the housing, each transfer dye set pair comprising two transfer dye sets symmetrically arranged about a fabric, wherein a first transfer dye set of each transfer dye set pair is mounted on the moving base and a second transfer dye set of each transfer dye set pair is mounted on the housing, wherein the first transfer dye set is movable toward or away from an opposing second transfer dye set by movement of the moving base along a guide, wherein each transfer dye set comprises:

-transfer rollers, wherein the two transfer rollers in each transfer dye set pair are arranged adjacent to each other and are rotatable in opposite directions;

-printing rolls, wherein the two printing rolls of each pair of transfer dye sets are respectively arranged on the outer side of a transfer roll opposite to the cloth and are configured to rotate in opposite directions to the adjacent transfer roll, said printing rolls comprising a covering layer on the radially outer surface, the surface of said covering layer being formed with uniform mesh-hole portions, the density of said mesh-hole portions being greater than or equal to 200 mesh;

a pressure-regulating device configured to be associated with the associated printing roller to regulate the pressure with which the associated printing roller bears against the associated transfer roller, wherein the pressure-regulating device is able to selectively move the associated printing roller into a bearing position, in which the associated printing roller bears against the transfer roller, thereby generating a pressure with which the associated printing roller bears against the associated transfer roller, or into a rest position, in which the associated printing roller does not bear against the associated transfer roller.

2. The transfer dyeing apparatus according to claim 1, characterized in that the density of the mesh-hole portion is 240 mesh or more.

3. The transfer dyeing apparatus according to claim 1, characterized in that said covering layer is an electroplated layer.

4. The transfer dyeing apparatus according to claim 1, characterized in that the spacing between the two transfer rollers in each pair of transfer dyeing groups is set to match the cloth under 20D.

5. The transfer dyeing apparatus according to claim 1, characterized in that the number of said transfer dyeing pair groups is at least two, and each transfer dyeing pair group is arranged in a straight line one after another along the moving direction of the cloth.

6. A transfer dyeing unit according to claim 5, characterized in that each first transfer dyeing group is mounted on the same mobile base or on a plurality of different mobile bases.

7. The transfer dyeing apparatus according to claim 1, characterized in that it further comprises a dye supply assembly, which is arranged outside the printing plate roll and comprises an axial seal and two end seals, which form, together with the surface of the printing plate roll, a closed dye chamber.

8. The transfer dyeing apparatus according to claim 1, characterized in that said printing roller comprises a connecting column and a body carrying said covering layer, wherein said connecting column extends through said body and comprises a first and a second spindle head respectively provided at both ends for mounting respectively on said mobile base or on said casing.

9. The transfer dyeing apparatus of claim 1, further comprising a displacement mechanism mounted on the housing, the displacement mechanism configured to drive the moving base in a linear motion along the guide rail.

10. The transfer dyeing apparatus according to claim 1, characterized in that the pressure adjusting means are located at both ends in the axial direction of the respective plate rolls.

11. The transfer dyeing apparatus according to claim 1, characterized in that said pressure-regulating device comprises an actuator connected to said housing and a sleeve fitted over said plate roller, said sleeve being configured eccentrically and being able to be driven in rotation by said actuator, so as to enable the plate roller to pass between a rest position and a rest position.

12. The transfer dyeing apparatus according to claim 11, wherein the actuator comprises a cylinder and a piston rod that is drivable by the cylinder to move linearly, the pressure regulating device further comprising a first link pivotally connected to the piston rod at a first articulation and pivotally connected to the housing by a pivot, and a second link pivotally connected to the sleeve at a second articulation and pivotally connected to the sleeve by a third articulation, such that the actuator can rotate the sleeve by driving the piston rod.

13. The transfer dyeing apparatus according to claim 12, characterized in that said pivot is located at a middle position of the first link.

14. The transfer dyeing apparatus according to claim 12, wherein the first hinge is located at a first end of the first link, the second hinge is located at a second end of the first link and a first end of the second link, and the third hinge is located at a second end of the second link.

15. The transfer dyeing apparatus according to claim 1, characterized in that it comprises a control device mounted on the housing and comprising a processor and a first sensor connected to the processor, the first sensor being arranged on the path of passage of the cloth and being configured to measure the speed of movement of the cloth, the processor being configured to be able to adjust the speed of movement in response to the speed of movement measured by the first sensor.

16. The transfer-dyeing apparatus of claim 15, wherein the control device includes a second sensor connected to the processor, the second sensor being disposed on one of the two transfer rollers of a transfer-dyeing pair and configured to measure the pressure between the two transfer rollers of the transfer-dyeing pair.

17. The transfer dyeing apparatus of claim 15, wherein the control device comprises a third sensor connected to the processor, the third sensor being disposed in the dye supply assembly and configured to measure the dye supply.

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