Double-sided different-pattern synchronous positioning and one-step forming permeation printing device

Abstract

The utility model relates to a double-sided different-pattern synchronous positioning and one-step forming permeation printing device which comprises a drying cylinder and a transmission belt assembly, and the transmission belt assembly is attached to the surface of a dried part and rotates along with the drying cylinder. The number of the paper feeding rollers is two, and the paper feeding rollers are used for conveying calico paper; a fabric; a photoelectric sensor; a tensioner; the photoelectric sensor is connected with the control system, when it is detected that the positions of cutting lines on the two layers of calico paper are not aligned, output of the tensioner is automatically adjusted so as to correct the alignment state, the device is compact and reasonable in structure and convenient to operate, and by integrating the photoelectric sensor, the intelligent tension control system and an efficient heat transfer path, the production efficiency is improved. Accurate double-sided synchronous heat transfer printing of thick or plush fabric is achieved. The photoelectric sensor in the device monitors in real time and accurately aligns cutting lines of the two layers of calico paper, it is guaranteed that patterns are synchronously located at the target position of the fabric, and the attractiveness and quality of products are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of textile printing, in particular to a double-sided different-pattern synchronous positioning one-time forming penetration printing device. Background Art

[0002] Transfer printing utilizes the principle of high-temperature sublimation of disperse dyes to transfer the pattern composed of disperse dyes printed on special transfer printing paper to the surface of the fabric. The plush cloth has a large thickness and the fabric also includes fluff with a height of 2 - 10 mm. Conventional disperse inks can only adhere to the surface, and the penetration rate can only reach about 50 - 60%. The root of the blanket after printing still appears white. Therefore, when producing flannelette, it is necessary to select penetration ink to increase the penetration ability of the dye into the fabric.

[0003] There are two ways to produce double-sided blanket printing. The first way is to print on one side, and after printing, use the method of napping on the back to damage the fibers. Some fibers are caught on the back, making the back also have a fluff feeling, and presenting a double-sided effect of the front color on the back. In this way, the front and back patterns are the same, but the depth of the back pattern is different from that of the front. The second way is to print the front and back sides separately through two production operations. This method of production can only ensure that the pattern on one side is positioned, and the pattern on the other side can only be a single color or a non-positioned pattern, and the operation is cumbersome.

[0004] For example, Chinese Patent CN209141674U discloses a double-sided printing device for polyester fabrics, which includes a frame, a paper feeding mechanism, a paper receiving mechanism, a fabric, a blanket, a roller group, and a cloth dropping frame. The paper feeding mechanism includes a first paper feeding mechanism and a second paper feeding mechanism; the paper receiving mechanism includes a first paper receiving mechanism and a second paper receiving mechanism; the roller group includes a transfer center roller, a guide roller, a pressure roller, and a cooling roller; the paper feeding mechanism, the paper receiving mechanism, the roller group, and the cloth dropping frame are all fixedly installed on the frame. The first paper feeding mechanism and the first paper receiving mechanism are used to convey and receive the first thermal transfer printing paper, and the second paper feeding mechanism and the second paper receiving mechanism are used to convey and receive the second thermal transfer printing paper.

[0005] In the actual use process of this patent, different effects are presented for polyester fabrics with different thicknesses. When the polyester fabric is relatively thin and there is no fluff, at this time, the double-sided pattern positioning of the polyester fabric is relatively synchronous, that is, on the polyester fabric in a limited space, both patterns are in the target positions of the polyester fabric;

[0006] However, for polyester fabrics with a large thickness or fabrics with fluff, it will cause the double-sided pattern positioning of the polyester fabric to be asynchronous, that is, one side pattern is in the target position, and the other side pattern will deviate from the target position, resulting in product defects.

[0007] If you want to achieve precise pattern positions on both sides of the fabric, on the one hand, it is necessary to ensure that the cutting lines on the two layers of printing paper are completely aligned. (The cutting lines on the printing paper are self - contained, and the pattern between the two cutting lines on the printing paper corresponds to the pattern on the fabric, and then individual products are formed through cutting). At present, the alignment of the cutting lines on the printing paper completely depends on manual experience, which affects the accuracy of printing positioning and will also cause the phenomenon of pattern deviation in the products;

[0008] At the same time, on the other hand, since the printing paper on the outer side of the fabric has a longer moving circumference, if the inner and outer layers of printing paper and the fabric maintain the same rotation speed, it will cause the pattern on the outer side of the fabric to shift, affecting the product quality.

[0009] Therefore, traditional technical means cannot achieve double - sided synchronous positioning printing for relatively thick fabrics / plush fabrics. For this reason, we propose a double - sided different - pattern synchronous positioning one - time forming penetration printing device. Utility Model Content

[0010] The applicant provides a double - sided different - pattern synchronous positioning one - time forming penetration printing device to address the above - mentioned shortcomings in the existing production technology, achieving precise double - sided synchronous heat transfer printing for relatively thick or plush fabrics.

[0011] The technical solution adopted by the present utility model is as follows:

[0012] A double - sided different - pattern synchronous positioning one - time forming penetration printing device, comprising:

[0013] A drying cylinder, which can rotate on its own and can provide heat source;

[0014] A conveyor belt assembly, which is attached to a part of the surface of the drying cylinder and rotates with the drying cylinder to provide extrusion power for the movement of the fabric,

[0015] Paper - feeding rollers, the number of which is two and are respectively used for conveying printing paper, and the printing paper is provided with cutting lines;

[0016] Fabric, which is located between two layers of printing paper and is used to receive double - sided synchronous transferred patterns;

[0017] Photoelectric sensors, which are arranged on the moving paths of the two paper - feeding rollers and are used to monitor the positions of the cutting lines on the two layers of printing paper in real time;

[0018] Tensioners, which are respectively arranged on the two paper - feeding rollers and are used to control the tension of the printing paper;

[0019] The photoelectric sensors are connected to a control system. When it detects that the positions of the cutting lines on the two layers of printing paper are not aligned, the tension of the printing paper is adjusted through the tensioners to correct the alignment state of the cutting lines.

[0020] Further, the belt assembly includes at least two belt guide rollers distributed circumferentially around the drying cylinder, and a belt sleeved on the belt guide rollers. The belt is in a C shape and fits on the surface of the drying cylinder, and is used to drive the fabric and the printing paper to move synchronously when the drying cylinder rotates.

[0021] Further, it further includes a paper receiving mechanism, including a first paper receiving roller and a second paper receiving roller, which are respectively arranged at the rear side of the belt assembly and are used to receive two layers of printing paper after the heat transfer is completed.

[0022] Further, a pattern corresponding to the fabric is provided between the two cutting lines.

[0023] Further, it further includes a pressing roller, which is arranged circumferentially on the drying cylinder and is used to apply a force towards the drying cylinder to the belt, so that the belt fits more tightly with the drying cylinder to improve the heat transfer effect.

[0024] Further, it further includes a fabric feeding roller, which is arranged between the two paper feeding rollers and is used to feed the fabric between the two layers of printing paper, and move synchronously with the printing paper under the drive of the belt assembly for heat transfer.

[0025] Further, a heating device and a rotation driving device are arranged on the drying cylinder.

[0026] Further, the tensiometer includes a magnetic gear connected to the side of the paper feeding roller. It adopts the electromagnetic induction method and controls the resistance when the paper feeding roller rotates by adjusting the magnetic force through voltage change.

[0027] Further, the paper feeding angle of one of the paper feeding rollers is 40° - 50°, and the paper feeding angle of the other paper feeding roller is 0 - 30°.

[0028] The beneficial effects of the present utility model are as follows:

[0029] The structure of the present utility model is compact and reasonable, and the operation is convenient. By integrating a photoelectric inductor, an intelligent tension control system and an efficient heat transfer path, accurate double-sided synchronous heat transfer of relatively thick or plush fabrics is realized. The photoelectric inductor in the device monitors in real time and accurately aligns the cutting lines of the two layers of printing paper, ensuring that the patterns are synchronously positioned at the target positions of the fabric, greatly improving the aesthetics and quality of the product. At the same time, the close combination of the belt assembly and the drying cylinder, as well as the application of the pressing roller, significantly enhances the heat transfer effect, making the patterns clear and having strong adhesion.

[0030] At the same time, the present utility model also has the following advantages:

[0031] 1. The device integrates a photoelectric inductor and an intelligent tension control system to achieve real-time monitoring and precise alignment of the cutting lines on two layers of printed paper. This innovative design effectively solves the problem of inaccurate alignment of cutting lines caused by relying on manual experience in traditional methods. Especially when dealing with thicker or plush fabrics, it can ensure that the printed patterns on both sides are accurately synchronized and positioned at the target location. This not only improves the overall aesthetics of the product but also significantly reduces the defective rate caused by inaccurate positioning, thereby enhancing production efficiency and product quality.

[0032] 2. The specially designed belt assembly in the device is closely combined with the drying cylinder to form an efficient heat transfer path. The belt not only serves as a conveying medium but also provides additional heat to the printed paper through the high temperature accumulated during its long-term contact with the drying cylinder, enhancing the heat transfer printing effect. In addition, the setting of multiple pressure rollers further ensures the close fit between the belt and the drying cylinder, as well as the good contact between the fabric and the printed paper, thereby improving the uniformity and stability of heat transfer printing. This design is particularly suitable for heat transfer printing of thicker or plush fabrics and can significantly enhance the clarity and adhesion of the transferred patterns.

[0033] 3. By adjusting the tensioner on the paper feeding roller, the device can flexibly adjust the tension state of the printed paper according to different fabric thicknesses and types of printed paper, ensuring accurate alignment of the cutting lines and synchronous positioning of the printed patterns under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is a schematic structural diagram of the present utility model.

[0035] Figure 2 is a positional structure diagram of two layers of printed paper in the present utility model.

[0036] Wherein:

[0037] 1. First paper feeding roller; 11. First printed paper; 2. Second paper feeding roller; 21. Second printed paper; 31. Cutting line; 3. Second paper receiving roller; 4. First paper receiving roller; 5. Fabric feeding roller; 51. Fabric; 6. Fabric discharging position; 7. Belt guide roller; 71. Belt; 8. Drying cylinder; 9. Photoelectric inductor; 10. Pressure roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to illustrate the technical solutions of the present application more clearly and therefore are only examples and should not be used to limit the protection scope of the present application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0040] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0041] Referring to "embodiments" herein means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0042] In the description of the embodiments of this application, the term "and / or" is only used to describe the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0043] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0044] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0045] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0046] As described in the background art, in the actual use process of the existing technical solutions, different effects are presented for polyester fabrics of different thicknesses. When the polyester fabric is thin and there is no fluff, the double-sided pattern positioning of the polyester fabric is relatively synchronous at this time, that is, on the polyester fabric in a limited space, both patterns are located at the center position of the polyester fabric;

[0047] However, for polyester fabrics with a large thickness or fabrics with fluff, it will cause the double-sided pattern positioning of the polyester fabric to be asynchronous, that is, one side pattern is located at the center position, and the other side pattern will deviate from the center position, resulting in product defects.

[0048] Based on the above considerations, in order to solve the problem that traditional technical means cannot achieve double-sided synchronous positioning printing for thick fabrics / fluffy fabrics.

[0049] Figure 1 The device structure diagram of the solution of the present invention is shown.

[0050] Please refer to Figure 1-2 , according to some embodiments of the present application, a double-sided different pattern synchronous positioning one-time forming penetration printing device is provided;

[0051] As Figure 1-Figure 2 shown, this embodiment discloses a double-sided different pattern synchronous positioning one-time forming penetration printing device, a heat transfer printing device for double-sided, different pattern, synchronous positioning, and one-time forming of thick fabrics and fluffy fabrics. Its structure includes a first paper feeding roller 1, a first printing paper 11, a second paper feeding roller 2, a second printing paper 21, a cutting line 31, a second paper receiving roller 3, a first paper receiving roller 4, a fabric feeding roller 5, a belt transmission assembly, and a drying cylinder 8, which can perform double-sided synchronous heat transfer printing on thick / fluffy fabrics 51, and at the same time make the printing patterns on both sides of the fabric 51 be in the target positions.

[0052] Specifically, as Figure 1 shown, the drying cylinder 8 is driven by a driving device to rotate, and at the same time, a heating device is arranged in the drying cylinder 8 to provide heat source for subsequent heat transfer printing;

[0053] The conveyor belt assembly includes at least two conveyor belt guide rollers 7 distributed circumferentially around the drying cylinder 8. A same conveyor belt 71 is sleeved on multiple conveyor belt guide rollers 7, and the conveyor belt 71 adheres to a partial surface of the drying cylinder 8. The conveyor belt 71 is in a C shape and moves following the rotation of the drying cylinder 8. The conveyor belt 71 has two functions. On the one hand, it can provide extrusion force. On the other hand, its long-term contact or indirect contact with the drying cylinder 8 results in a relatively high temperature, improving the transfer effect of the outer-layer printed paper.

[0054] At the opening of the C shape of the conveyor belt 71, a first paper feed roller 1 and a second paper feed roller 2 are provided. A first printed paper 11 and a second printed paper 21 are respectively sleeved on the two paper feed rollers. The pattern designs of the two layers of printed paper can be the same or different. Photoelectric sensors 9 are provided on the moving paths of the two layers of printed paper to identify the positions of the cutting lines 31 on the printed paper and judge whether the two cutting lines 31 are in an aligned position.

[0055] In this embodiment, the paper feed angle (the angle with the horizontal plane) of the second paper feed roller 2 is 40° - 50°, and the paper feed angle of the first paper feed roller 1 is 0 - 30°. If the reason for choosing the second paper feed roller 2 is that when it is greater than 50°, at this time the second printed paper 21 is too close to the surface of the drying cylinder 8, causing the temperature of the printed paper to be too high and easily resulting in premature dye sublimation, making the pattern color change; at the same time, it is determined with reference to the available space in the equipment; the consideration for the position selection of 30° is that when producing single-sided printing, the printed fabric moves under the paper, so the paper feed roller needs to be greater than 0 degrees to ensure that the fabric has a suitable angle and distance to enter the cylinder surface. At the same time, two paper feed rollers can be used for paper switching; the second reason is that when producing double-sided printing, the two angles form an included angle of 15 degrees, which is easier to make the paper and the fabric fit together. If it is less than 15 degrees, the two paper feed rollers are too close, which will affect the size distribution of the two rolls of paper.

[0056] At the same time, tensioners are provided on both paper feed rollers. The state of the printed paper is controlled through the tensioners, so that the printed paper is in a tight or loose state. The adjustment of the paper feed roller tension is adjusted according to the diameter of the drying cylinder 8 and the thickness of the fabric 51. Usually, the tension of the printed paper closer to the drying cylinder 8, that is, the second printed paper 21, is larger, while the tension of the printed paper farther from the drying cylinder 8, that is, the first printed paper 11, is smaller.

[0057] In this embodiment, the tensioner includes a magnetic gear connected to the side of the paper feed roller. It adopts an electromagnetic induction method, and the magnetic force is adjusted by changing the voltage to control the resistance when the paper feed roller rotates.

[0058] In this embodiment, in order to ensure that the cutting lines on the two layers of printing paper are completely aligned, and then ensure that the moving speeds of the two layers of printing paper are the same; at the same time, the tensioner is electrically connected to the two photoelectric sensors 9. When it is recognized that the cutting lines 31 on the two layers of printing paper are not aligned, generally there are two cases. That is, the cutting line 31 of the first printing paper 11 is closer to the drying cylinder 8. At this time, it means that the linear speed of the first printing paper 11 is greater than that of the second printing paper 21. At this time, the tension of the first printing paper 11 is increased or the tension of the second printing paper 21 is decreased through the tensioner;

[0059] In another case, that is, the cutting line 31 of the second printing paper 21 is closer to the drying cylinder 8. At this time, it means that the linear speed of the first printing paper 11 is less than that of the second printing paper 21. At this time, the tension of the first printing paper 11 is reduced or the tension of the second printing paper 21 is increased through the tensioner, so as to make the cutting lines 31 on the two layers of printing paper in an aligned state.

[0060] In this embodiment, a fabric feeding roller 5 is arranged between the two paper feeding rollers, and a fabric 51 is sleeved on the fabric feeding roller 5; the fabric 51 is sandwiched between the two layers of printing paper and is conveyed for transfer printing;

[0061] The fabric 51 in this embodiment has a relatively large thickness or is a plush fabric. Therefore, when transferring, it is necessary to further improve the contact effect between the fabric 51 and the printing paper.

[0062] In this embodiment, at the same time, a plurality of pressing rollers 10 are arranged in the circumferential direction of the drying cylinder 8. The pressing rollers 10 are used to apply a force towards the drying cylinder 8 to the transmission belt 71, so that the transmission belt 71 fits more closely with the drying cylinder 8, which also improves the connection effect between the subsequent fabric 51 and the printing paper, thereby improving the effect of heat transfer printing. At the same time, under the action of the pressing rollers 10, the transmission belt 71 is in closer contact with the printing paper, so as to ensure that the two layers of printing paper maintain a better linear speed.

[0063] In this embodiment, the number of the pressing rollers 10 is two. One of the pressing rollers 10 is located on the side where the printing paper first contacts the drying cylinder 8. Thus, under the combined action of the pressing roller 10 and the transmission belt 71, the fabric 51 fits closely with the printing paper and the drying cylinder 8, thereby improving the quality of heat transfer printing. At the same time, it prevents the phenomenon that the second printing paper 21 is prone to misalignment with the fabric 51 and the first printing paper 11 after first contacting the drying cylinder 8, which affects the printing effect.

[0064] In this embodiment, a fabric discharging position 6 is arranged at the rear side of the transmission belt 71, which is used to discharge the transferred fabric 51 and convey it to the subsequent process. At the same time, a second paper collecting roller 3 and a first paper collecting roller 4 are respectively arranged on both sides of the fabric discharging position 6 for storing the two layers of printing paper.

[0065] This double-sided different-pattern synchronous positioning one-time forming penetration printing device realizes precise double-sided synchronous heat transfer printing on relatively thick or plush fabrics by integrating a photoelectric inductor 9, an intelligent tension control system, and an efficient heat transfer path. The photoelectric inductor 9 in the device monitors in real time and precisely aligns the cutting lines 31 of two layers of printing paper (the first printing paper 11 and the second printing paper 21), ensuring that the patterns are synchronously positioned at the target positions of the fabric 51, greatly improving the aesthetics and quality of the products. At the same time, the close combination of the conveyor belt assembly (including the conveyor belt guide roller 7 and the conveyor belt 71) and the drying cylinder 8, as well as the application of the pressure roller 10, significantly enhances the heat transfer printing effect, making the patterns clear and with strong adhesion. In addition, this device also has high flexibility and wide applicability, and can be quickly adjusted according to the thickness of different fabrics 51 and the types of printing paper (the first printing paper 11, the second printing paper 21) to meet the diverse production requirements. The device includes a first paper feeding roller 1, a second paper feeding roller 2, a second paper collecting roller 3, a first paper collecting roller 4, a fabric feeding roller 5, a fabric discharging position 6, a conveyor belt guide roller 7, a conveyor belt 71, a drying cylinder 8, a photoelectric inductor 9, and a pressure roller 10. This innovative design not only improves production efficiency but also reduces the defective rate, bringing significant economic benefits and market competitiveness to industries such as textile and clothing.

[0066] The above description is an explanation of the present utility model, not a limitation of the utility model. For the scope defined by the present utility model, refer to the claims. Any form of modification can be made within the protection scope of the present utility model.

Claims

1. Double-sided different-pattern synchronous positioning one-time forming penetration printing device, characterized in that Comprising: A dryer cylinder, which can rotate and provide heat source; A conveyor belt assembly, which is attached to a part of the surface to be dried and rotates together with the dryer cylinder to provide extrusion power for the movement of the fabric; Paper feeding rollers, two in number and respectively used for conveying printing paper, and the printing paper is provided with cutting lines; a fabric, which is located between two layers of printing paper and is used to receive the patterns transferred synchronously on both sides; An optoelectronic sensor, which is arranged on the moving path of the two paper feeding rollers and is used to monitor the position synchronization of the cutting lines on the two layers of printing paper in real time; Tensioners are respectively arranged on the two paper feeding rollers and are used to control the tension of the printing paper; The optoelectronic sensor is connected to a control system. When it detects that the cutting lines on the two layers of printing paper are not aligned, the tension of the printing paper is adjusted through the tensioner to correct the alignment state of the cutting lines.

2. The double-sided different-pattern synchronous positioning one-step forming penetration printing device according to claim 1, wherein: The conveyor belt assembly includes at least two conveyor belt guide rollers distributed circumferentially on the dryer cylinder, and a conveyor belt sleeved on the conveyor belt guide rollers. The conveyor belt is in a C shape and is attached to the surface of the dryer cylinder and is used to drive the fabric and the printing paper to move synchronously when the dryer cylinder rotates.

3. The double-sided different-pattern synchronous positioning one-step forming penetration printing device according to claim 1, wherein: It further includes a paper collecting mechanism, which includes a first paper collecting roller and a second paper collecting roller, respectively arranged at the rear side of the conveyor belt assembly and is used to collect the two layers of printing paper after the thermal transfer is completed.

4. The double-sided different-pattern synchronous positioning one-time forming penetration printing device according to claim 1, wherein: A pattern corresponding to the fabric is arranged between the two cutting lines.

5. The double-sided different-pattern synchronous positioning one-step forming permeation printing device according to claim 2, wherein: It further includes a pressing roller, which is arranged in the circumferential direction of the dryer cylinder and is used to apply a force towards the dryer cylinder to the conveyor belt, so that the conveyor belt fits more closely with the dryer cylinder to improve the thermal transfer effect.

6. The double-sided different-pattern synchronous positioning one-time forming penetration printing device according to claim 1, characterized in that: It further includes a fabric feeding roller, which is arranged between the two paper feeding rollers and is used to feed the fabric between the two layers of printing paper and move synchronously with the printing paper under the drive of the conveyor belt assembly for thermal transfer.

7. The double-sided different-pattern synchronous positioning one-time forming penetration printing device according to claim 1, wherein: A heating device and a rotation driving device are arranged on the dryer cylinder.

8. The double-sided different-pattern synchronous positioning one-step forming penetration printing device according to claim 1, characterized in that: The tensioner includes a magnetic gear connected to the side of the paper feeding roller. It adopts an electromagnetic induction method and adjusts the magnetic force through voltage change to control the resistance when the paper feeding roller rotates.

9. The double-sided different-pattern synchronous positioning one-time forming penetration printing device according to claim 1, wherein: The paper feeding angle of one of the paper feeding rollers is 40° - 50°, and the paper feeding angle of the other paper feeding roller is 0 - 30°.

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