Paper sheet conveying device and printing apparatus

Abstract

The application provides a paper conveying device and a printing device. The paper conveying device is used for conveying paper and comprises a turnover assembly and two conveying assemblies. The conveying assembly has oppositely arranged first and second ends. The turnover assembly is connected between the two conveying assemblies. The conveying path of the paper sequentially passes through the first and second ends of one of the conveying assemblies, the turnover assembly and the first and second ends of the other conveying assembly. The turnover assembly comprises a first cooling member and a turnover member. The turnover member is configured to turn over the paper, so that the paper in the other conveying assembly is turned over relative to the paper in one of the conveying assemblies. Through the above arrangement, the two conveying assembly device has a large width, and can print a large-width paper. In addition, double-sided printing can be realized. Compared with single-sided printing, the printing efficiency of the printing device is higher, and the requirement of the user for the printing device with the double-sided printing function and the large width can be met.

Description

Technical Field

[0001] This application relates to the field of printing technology, and more particularly to a paper transport device and a printing apparatus. Background Technology

[0002] Printing equipment has become ubiquitous in people's daily lives. Furthermore, with the development of the printing industry, there is an increasing demand for printing equipment. Existing printing equipment can print on both sides of paper, thereby reducing printing costs and paper consumption. Printing equipment typically includes a conveyor system. After paper is placed inside, it is transported via this system, and the printing equipment prints on the paper during this transport process.

[0003] In related technologies, printing equipment is divided into single-sided printing and double-sided printing. Among them, printing equipment with double-sided printing function usually integrates a flip function, which can flip the paper.

[0004] However, printing devices with duplex printing capabilities can only print on narrower sheets of paper, which cannot meet users' requirements for printing devices with both duplex printing capabilities and wider paper widths. Summary of the Invention

[0005] In order to solve at least one of the problems mentioned in the background art, this application provides a paper transport device and a printing device, which aims to solve the technical problem that the printing devices in the related art have a small paper width, which cannot meet the user's requirements for printing devices with double-sided printing function and a larger paper width.

[0006] To achieve the above objectives, in a first aspect, this application provides a paper transport device for transporting paper, the paper transport device comprising a flipping component and two transport components, each transport component having a first end and a second end disposed opposite to each other; the transport components are used for printing and drying the paper.

[0007] The flipping component is connected between the two transmission components, and the paper's transmission path passes sequentially through the first and second ends of one of the transmission components, the flipping component, and the first and second ends of the other transmission component.

[0008] The flipping assembly includes a first cooling element and a flipping element spaced apart, the first cooling element being used to cool the paper; the flipping element being configured to flip the paper so that the paper in another transport assembly is flipped relative to the paper in one of the transport assemblies.

[0009] Optionally, in the paper transport device described above, the flipping assembly further includes a flipping base, and both the first cooling element and the flipping element are mounted on the flipping base;

[0010] The flipper has an input side and an output side, the input side facing the second end of one of the transport components, and the output side facing the first end of the other transport component; the flipper is configured to flip the paper so that the paper at the output side is flipped relative to the paper at the input side.

[0011] The first cooling element is disposed near the paper feed side of the flipping element; or, the first cooling element is disposed near the paper output side of the flipping element.

[0012] In the aforementioned paper transport device, optionally, the first cooling element includes a first cooling roller and two first guide rollers arranged at intervals along a first direction, wherein the first cooling roller is located between the two first guide rollers along the first direction;

[0013] Along the second direction, the first cooling roller and the first guide roller are located on different sides of the flipping seat, and the two first guide rollers are arranged on the same side. The second direction intersects with the first direction.

[0014] The paper's transport path sequentially bypasses one of the first guide rollers, the first cooling roller, and the other second guide roller.

[0015] In the aforementioned paper transport device, optionally, the flipping component includes a second guide roller and a third guide roller arranged intersecting each other, and the transport path of the paper sequentially bypasses the second guide roller and the third guide roller; the second guide roller and the third guide roller are respectively used to flip the paper once;

[0016] The extension direction of the second guide roller intersects the extension direction of the third guide roller and also intersects the first direction; the angles formed by the first direction with the extension directions of the second guide roller and the third guide roller are equal.

[0017] Optionally, in the paper transport device described above, the flipping assembly further includes a second cooling element, which extends along the first direction;

[0018] Along a third direction, the orthographic projection of the second cooling element on the flipping seat overlaps at least partially with the orthographic projections of the second guide roller and the third guide roller on the flipping seat;

[0019] The third direction intersects the second direction and also intersects the extension direction of the second guide roller and the extension direction of the third guide roller.

[0020] Optionally, in the paper transport device described above, the flipping component further includes two parallel and spaced fourth guide rollers, which extend along the third direction.

[0021] Along the first direction, the two fourth guide rollers are located on opposite sides of the second guide roller and the third guide roller, and are disposed away from the second guide roller and the third guide roller.

[0022] In the aforementioned paper transport device, optionally, the transport assembly includes a mounting base and a first drive member, a second drive member, and a printing guide member mounted on the mounting base;

[0023] The first driving member and the second driving member are respectively close to the first end and the second end, and are respectively located on opposite sides of the printing guide, at least the printing guide is located on the paper transport path.

[0024] In the paper transport device described above, optionally, the first drive member and the second drive member, which are far from the flipping component, are both located on the transport path of the paper.

[0025] At least one of the first and second drive members near the flipping assembly is located on the paper transport path.

[0026] In the aforementioned paper transport device, optionally, the transport assembly further includes a correction component, a tension detection component, a speed measuring component, and a drying component, wherein the correction component, the tension detection component, the speed measuring component, and the drying component are all located on the transport path of the paper;

[0027] The correction component is located on the side of the printing guide closer to the first end. The tension detection component and the speed measuring component are both located between the first driving component and the printing guide. The speed measuring component is closer to the printing guide than the tension detection component. The drying component is located between the printing guide and the second driving component.

[0028] Secondly, this application also provides a printing device, including an inkjet unit and the paper transport device, wherein the inkjet unit includes printhead assemblies corresponding to two transport assemblies, and the two printhead assemblies are respectively configured to face different paper surfaces of the paper.

[0029] The paper transport device and printing equipment provided in this application include a flipping component and two transport components. Each transport component has a first end and a second end disposed opposite to each other. The transport components are used to transport and dry paper. The flipping component is connected between the two transport components. The paper transport path sequentially passes through the first and second ends of one transport component, the flipping component, and the first and second ends of the other transport component. The flipping component includes a first cooling element and a flipping element disposed at intervals. The first cooling element is used to cool the paper. The flipping element is configured to flip the paper so that the paper in the other transport component is flipped relative to the paper in one of the transport components. By setting two transport components, the paper transport path is longer, which can accommodate larger paper sizes, i.e., the printing equipment has a larger width and can print larger width paper. By setting a flipping component between the two transport components, double-sided printing can be achieved. Compared with single-sided printing, the printing efficiency of the printing equipment is higher, which can meet the user's requirements for a printing equipment with double-sided printing function and a larger width.

[0030] The structure of this application, as well as its other objectives and beneficial effects, will become more apparent and understandable through the description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a first structure of a paper transport device provided in an embodiment of this application;

[0033] Figure 2 A three-dimensional structural schematic diagram of the flipping component of the paper transport device provided in the embodiments of this application;

[0034] Figure 3 A top view of the flipping assembly of the paper transport device provided in an embodiment of this application;

[0035] Figure 4 A schematic diagram of the operation of the flipping component of the paper transport device provided in the embodiments of this application;

[0036] Figure 5 This is a schematic diagram of the structure of the transmission component of the paper transmission device provided in the embodiments of this application;

[0037] Figure 6 This is a schematic diagram of a second structure of the paper transport device provided in the embodiments of this application;

[0038] Figure 7 This is a schematic diagram of the printing device provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10 - Paper transport device; X - First direction; Y - Second direction; Z - Third direction; A - Paper;

[0041] 100 - Flip assembly; 110 - Flip base;

[0042] 120 - Flip-over component; 121 - Feed side; 122 - Output side; 123 - Second guide roller; 124 - Third guide roller; 125 - Fourth guide roller;

[0043] 130 - First cooling component; 131 - First cooling roller; 132 - First guide roller;

[0044] 140 - Second cooling component;

[0045] 200 - Transmission component; 201 - First end; 202 - Second end;

[0046] 210-Mounting base; 220-First drive component; 230-Second drive component; 240-Printing guide component; 241-Printing guide roller; 250-Correction component; 260-Tension detection component; 270-Speed ​​measuring component; 280-Drying component; 290-Auxiliary guide roller;

[0047] 20 - Printing equipment; 300 - Inkjet unit; 310 - Printhead assembly; 311 - Printhead.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] In related technologies, printing devices with duplex printing capabilities typically adopt a structure that integrates the transmission and flipping functions, resulting in a high degree of integration. In addition, the transmission component usually integrates drying and cooling functions, meaning that the transmission component integrates drying, cooling, and flipping functions. As a result, the space for the transmission function structure is relatively small, and consequently, the width of the paper that the printing device can print is relatively small, which cannot meet the user's requirements for a printing device with duplex printing capabilities and a larger paper width.

[0050] Based on the aforementioned technical problems, embodiments of this application provide a paper transport device and a printing device. The paper transport device includes a flipping component and two transport components, each having a first end and a second end disposed opposite to each other. The transport components are used to transport and dry paper. The flipping component is connected between the two transport components, and the paper transport path sequentially passes through the first and second ends of one of the transport components, the flipping component, and the first and second ends of the other transport component. The flipping component includes a first cooling element and a flipping element disposed at intervals. The first cooling element is used to cool the paper. The flipping element is configured to flip the paper so that the paper in the other transport component is flipped relative to the paper in one of the transport components. By setting two transport components, the paper transport path is longer, which can accommodate larger paper sizes, i.e., the printing device has a larger width and can print larger width paper. By setting a flipping component between the two transport components, double-sided printing can be achieved. Compared with single-sided printing, the printing efficiency of the printing device is higher, which can meet the user's requirements for a printing device with double-sided printing function and a larger width.

[0051] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar structural components or structural components with the same or similar functions throughout. The described embodiments are some structural embodiments of this application, not all structural embodiments. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0052] Figure 1 This is a schematic diagram of a first structure of a paper transport device provided in an embodiment of this application; Figure 2 A three-dimensional structural schematic diagram of the flipping component of the paper transport device provided in the embodiments of this application; Figure 3 A top view of the flipping assembly of the paper transport device provided in an embodiment of this application; Figure 4 A schematic diagram of the operation of the flipping component of the paper transport device provided in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the transmission component of the paper transmission device provided in the embodiments of this application; Figure 6 This is a schematic diagram of a second structure of the paper transport device provided in an embodiment of this application.

[0053] Firstly, refer to the appendix Figure 1 and attached Figure 6As shown, this application embodiment provides a paper A transport device 10, which includes a flipping component 100 and two transport components 200. Each transport component 200 has a first end 201 and a second end 202 disposed opposite to each other. It can be understood that paper A can enter through the first end 201 of the transport component 200 and exit through the second end 202 after passing through the transport component 200.

[0054] It should be noted that the two transmission components 200 can have identical structures. This allows them to be manufactured using the same production process and materials, reducing production costs. Furthermore, compared to two transmission components 200 with different structures, it reduces the additional costs associated with those differences. Additionally, using two identical transmission components 200 can improve production efficiency while reducing costs. Finally, with the above configuration, the two transmission components 200 are equally likely to fail during the operation of the paper A transmission device 10, thus improving the system's reliability and stability.

[0055] Furthermore, the conveying component 200 is used to convey and dry the paper A. The flipping component 100 is connected between the two conveying components 200. The conveying path of the paper A sequentially passes through the first end 201 and the second end 202 of one of the conveying components 200, the flipping component 100, and the first end 201 and the second end 202 of the other conveying component 200. That is, the paper A can enter through the first end 201 of one of the conveying components 200, be conveyed by that conveying component 200, and then exit through the second end 202. After being flipped and cooled by the flipping component 100, it enters through the first end 201 of the other conveying component 200, and finally be conveyed by that conveying component 200 and exit through the second end 202.

[0056] It is understandable that by setting two transmission components 200, compared with the structure that integrates transmission and flipping functions, the paper A transmission device 10 in this embodiment has a longer transmission path for paper A, which can adapt to larger paper A sizes. That is, the printing device 20 has a larger width and can print larger paper A sizes.

[0057] Furthermore, by setting a flipping component 100 between the two transmission components 200, double-sided printing can be achieved. Compared with single-sided printing, the printing device 20 has higher printing efficiency and can meet the user's requirements for the printing device 20 to have double-sided printing function and a larger width.

[0058] Specifically, the flipping assembly 100 includes a first cooling element 130 and a flipping element 120 spaced apart. The first cooling element 130 is used to cool the paper A to ensure that the paper A will not affect the subsequent printing effect due to overheating. The flipping element 120 is configured to flip the paper A so that the paper A in another transport assembly 200 is flipped relative to the paper A in one of the transport assemblies 200.

[0059] By placing the flipping component 100, which integrates cooling and flipping functions, between the two transmission components 200, compared to a structure that integrates multiple functions such as transmission, flipping, drying, and cooling, the paper A transmission device 10 in this embodiment has a longer transmission path for paper A, which can adapt to larger paper A sizes. That is, the printing device 20 has a larger width and can print larger paper A sizes, thus fulfilling the user's requirement for the printing device 20 to have double-sided printing function and a larger width.

[0060] Furthermore, by placing the first cooling element 130 between the two transmission components 200, the temperature of the paper A in the two transmission components 200 can be balanced, avoiding uneven temperature distribution in the paper A transmission device 10, thereby avoiding local overheating, ensuring the normal operation of the paper A transmission device 10, and thus ensuring the normal operation of the printing device 20.

[0061] As an optional implementation method, refer to the appendix. Figure 2 - Appendix Figure 4 As shown, the flipping assembly 100 also includes a flipping base 110, on which the first cooling component 130 and the flipping component 120 are both mounted.

[0062] Specifically, the flipper 120 has an input side 121 and an output side 122, with the input side 121 facing the second end 202 of one of the transmission components 200 and the output side 122 facing the first end 201 of the other transmission component 200; the flipper 120 is configured to flip the paper A so that the paper A at the output side 122 is flipped relative to the paper A at the input side 121.

[0063] It is understood that the number of times the paper A is flipped by the flipping component 120 can be arbitrary. For example, the paper A can be flipped only once, or twice, or three or four times, etc. The embodiments of this application do not limit the number of times the paper A is flipped by the flipping component 120, nor are they limited to the above examples.

[0064] In this embodiment, the surface of paper A before being flipped by the flipping member 120 is different from the surface after being flipped by the flipping member 120, so that the surfaces of paper A contacted by the two transmission components 200 are different. At this time, the flipping member 120 flips paper A an odd number of times, that is, the flipping member 120 flips paper A once, three times, five times, etc. The following explanation uses the example of the flipping member 120 flipping paper A three times.

[0065] Furthermore, the first cooling element 130 is disposed near the paper input side 121 of the flipping element 120; or, the first cooling element 130 is disposed near the paper output side 122 of the flipping element 120. That is, the flipping assembly 100 can be flipped first and then cooled, or it can be cooled first and then flipped.

[0066] The embodiments of this application do not limit the specific position between the first cooling member 130 and the flipping member 120, nor are they limited to the above examples. Hereinafter, the first cooling member 130 is set close to the paper output side 122 of the flipping member 120, that is, the flipping assembly 100 flips first and then cools.

[0067] With the above configuration, the flipping component 100 has both cooling and flipping functions. Compared to structures that integrate multiple functions such as transmission, flipping, drying, and cooling, the paper A transmission device 10 in this embodiment has a longer transmission path for paper A, which can accommodate larger sizes of paper A. That is, the printing device 20 has a larger width and can print larger width paper A, thus fulfilling the user's requirement for the printing device 20 to have double-sided printing function and a larger width. In addition, the flipping component 100 can balance the temperature of paper A within the two transmission components 200, avoiding uneven temperature distribution in the paper A transmission device 10, thereby preventing local overheating and ensuring the normal operation of the paper A transmission device 10, and thus ensuring the normal operation of the printing device 20.

[0068] As an optional implementation method, refer to the appendix. Figure 2 and attached Figure 3 As shown, the first cooling element 130 includes a first cooling roller 131 and two first guide rollers 132 spaced apart along a first direction X. The first cooling roller 131 is located between the two first guide rollers 132 along the first direction X. Along a second direction Y, the first cooling roller 131 and the first guide roller 132 are located on different sides of the flipping seat 110, and the two first guide rollers 132 are arranged on the same side. The second direction Y intersects the first direction X. The transport path of the paper A passes by one of the first guide rollers 132, the first cooling roller 131, and the other second guide roller 123 in sequence. That is, the first guide roller 132 and the second guide roller 123 are located on opposite sides of the first cooling roller 131 on the transport path, and both the first guide roller 132 and the second guide roller 123 can be used to ensure that the transport direction of the paper A remains unchanged.

[0069] It should be noted that the angle between the first direction X and the second direction Y can be arbitrary. For example, the angle can be any one of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc. The embodiments of this application do not limit the specific angle between the first direction X and the second direction Y, nor are they limited to the above examples.

[0070] The following explanation uses an example where the angle between the first direction X and the second direction Y is 90°, meaning that the first direction X and the second direction Y are perpendicular.

[0071] It is understood that the first cooling roller 131 can be cooled by introducing a cooling medium, which can be a coolant or a cooling gas. This application embodiment does not limit the cooling method of the first cooling roller 131, nor is it limited to the above example. The following description uses the method of introducing coolant into the first cooling roller 131 as an example for cooling.

[0072] With the above configuration, the first guide roller 132 is located between the flipping member 120 and the first cooling roller 131, ensuring that the transport direction of the paper A after being flipped by the flipping member 120 remains unchanged; the second guide roller 123 is located between the first cooling roller 131 and another transport assembly 200, ensuring that the transport direction of the cooled paper A remains unchanged. In this way, the first guide roller 132, the first cooling roller 131, and the second guide roller 123 can cooperate with each other to ensure that the flipped paper A can be cooled relatively smoothly and enter the other transport assembly 200 for printing on different paper surfaces.

[0073] As an optional implementation method, refer to the appendix. Figure 2 - Appendix Figure 4 As shown, the flipping component 120 includes a second guide roller 123 and a third guide roller 124 arranged intersecting each other. The transport path of the paper A passes around the second guide roller 123 and the third guide roller 124 in sequence. The second guide roller 123 and the third guide roller 124 are used to flip the paper A once. The extension direction of the second guide roller 123 intersects the extension direction of the third guide roller 124 and also intersects the first direction X. The angle formed by the first direction X with the extension direction of the second guide roller 123 and the extension direction of the third guide roller 124 is equal.

[0074] It should be noted that the angle between the first direction X and the extension direction of the second guide roller 123, and the angle between the first direction X and the extension direction of the third guide roller 124, can be acute, obtuse, or right. The embodiments of this application do not limit the type of angle, nor are they limited to the above examples.

[0075] The following explanation will use the example of an acute angle.

[0076] It is understandable that the second guide roller 123 and the third guide roller 124 can be used to flip the paper A once. In this way, the transmission direction of the paper A remains unchanged. Compared with the change of the transmission direction of the paper A, the transmission accuracy of the paper A is higher. That is, the transmission accuracy of the flipping component 100 is higher, which can improve the transmission accuracy of the paper A transmission device 10, thereby improving the printing accuracy of the printing device 20.

[0077] As an optional implementation method, refer to the appendix. Figure 2 - Appendix Figure 4 As shown, the flipping component 120 also includes a second cooling component 140, which extends along the first direction X; along the third direction Z, the orthographic projection of the second cooling component 140 on the flipping base 110 overlaps at least partially with the orthographic projections of the second guide roller 123 and the third guide roller 124 on the flipping base 110; the third direction Z intersects with the second direction Y, and also intersects with the extension directions of the second guide roller 123 and the third guide roller 124.

[0078] For example, the second cooling element 140 may be the same cooling roller as the first cooling roller 131.

[0079] It should be noted that the angle between the third direction Z and the second direction Y can be arbitrary. For example, the angle can be any one of 30°, 45°, 60°, 90°, 120°, 135°, 150°, etc. The embodiments of this application do not limit the specific angle between the third direction Z and the second direction Y, nor are they limited to the above examples.

[0080] The following explanation uses the example of a 90° angle between the third direction Z and the second direction Y, where the third direction Z is perpendicular to the second direction Y and also perpendicular to the first direction X.

[0081] It is understood that the second cooling element 140 can be used to flip the paper A once. Specifically, on the transport path of the paper A, the second cooling element 140 can be located between the second guide roller 123 and the third guide roller 124 to flip the paper A after it has been flipped by the second guide roller 123. That is, the paper A passes through the second guide roller 123, the second cooling element 140, and the third guide roller 124 in sequence, undergoing a total of three flips. When the paper A passes through the aforementioned flipping element 120, the transport direction of the paper A remains unchanged, but the orientation of the paper A changes.

[0082] With the above configuration, paper A enters from the paper inlet side 121, passes through the second guide roller 123, the second cooling element 140, and the third guide roller 124 in sequence for three flips, and then exits from the flipping element 120 via the paper outlet side 122. By setting the flipping element 120, paper A can be flipped three times and its orientation can be changed, thereby realizing the flipping function of the flipping component 100 and enabling double-sided printing of the printing device. At the same time, the flipping element 120 with the above structure occupies less space, and the transmission direction of paper A remains unchanged. The transmission accuracy of the flipping component 100 is high, which can improve the transmission accuracy of the paper A transmission device 10 and thus improve the printing accuracy of the printing device 20. In addition, the cooling effect of the flipping component 100 on the paper can be improved by the second cooling element 140 and the first cooling element 130.

[0083] As an optional implementation method, refer to the appendix. Figure 2 - Appendix Figure 4 As shown, the flipping component 120 also includes two parallel and spaced fourth guide rollers 125, which extend along the third direction Z; along the first direction X, the two fourth guide rollers 125 are located on opposite sides of the second guide roller 123 and the third guide roller 124, and are located away from the second guide roller 123 and the third guide roller 124, that is, on the paper A transport path, the two fourth guide rollers 125 are located on the paper infeed side 121 and the paper outfeed side 122, respectively.

[0084] Specifically, the transfer path of paper A in the flipper 120 is as follows:

[0085] Paper A passes sequentially through one of the fourth guide rollers 125, the second guide roller 123, the second cooling element 140, the third guide roller 124, and the other fourth guide roller 125. It is flipped when passing through the second guide roller 123, the second cooling element 140, and the third guide roller 124, and is removed from the flipping element 120 via the paper exit side 122.

[0086] With the above settings, the two fourth guide rollers 125 can be used to guide the paper A into the flipper 120 and remove the paper A from the flipper 120, respectively. The fourth guide rollers 125 can be used to guide the transmission of the paper A, thereby improving the transmission accuracy of the flipper 120 to the paper A and thus improving the printing accuracy of the printing device 20.

[0087] As an optional implementation method, refer to the appendix. Figure 5 As shown, the transmission assembly 200 includes a mounting base 210 and a first drive member 220, a second drive member 230 and a printing guide member 240 mounted on the mounting base 210; the first drive member 220 and the second drive member 230 are respectively close to the first end 201 and the second end 202, and are respectively located on opposite sides of the printing guide member 240, at least the printing guide member 240 is located on the transmission path of the paper A.

[0088] It is understood that the first driving member 220 can be a driving roller, and the second driving member 230 can also be a driving roller, which can provide power for the transport of paper A. With the above configuration, the transport assembly 200 can drive paper A to be transported relative to the mounting base 210 through the first driving member 220 and the second driving member 230.

[0089] It should be noted that the printing guide 240 may include multiple printing guide rollers 241. The printing guide rollers 241 are the same as the first guide roller 132, the second guide roller 123, etc., mentioned above, and are all used to transport paper A. The difference is that the printing guide rollers 241 correspond to the inkjet device 300 of the printing equipment 20 and can perform inkjet printing on paper A.

[0090] As an optional implementation method, refer to the appendix. Figure 5 As shown, the first drive member 220 and the second drive member 230, which are away from the flipping assembly 100, are both located on the transport path of the paper A; at least one of the first drive member 220 and the second drive member 230, which are close to the flipping assembly 100, is located on the transport path of the paper A.

[0091] For example, in the transport component 200 near the flipping component 100, only the first drive member 220 near the flipping component 100 may be located on the transport path of the paper A, only the second drive member 230 near the flipping component 100 may be located on the transport path of the paper A, or both the first drive member 220 and the second drive member 230 near the flipping component 100 may be located on the transport path of the paper A. This application does not limit the scope of the embodiments.

[0092] With the above configuration, in the paper A transport device 10, there are at least two driving components located on the transport path of paper A, so that the two transport components 200 can work normally.

[0093] It should be noted that the speed of the first driving component 220 and the speed of the second driving component 230 may be the same or different. The speeds of the first driving component 220 or the second driving component 230 of different transmission components 200 may be the same or different. The embodiments of this application do not limit the above content, nor are they limited to the above examples.

[0094] As an optional implementation method, refer to the appendix. Figure 5As shown, the transmission assembly 200 also includes a correction component 250, a tension detection component 260, a speed measuring component 270, and a drying component 280. The correction component 250, tension detection component 260, speed measuring component 270, and drying component 280 are all located on the transmission path of the paper A. The correction component 250 is located on the side of the printing guide 240 near the first end 201. The tension detection component 260 and the speed measuring component 270 are both located between the first drive component 220 and the printing guide 240. The speed measuring component 270 is closer to the printing guide 240 than the tension detection component 260. The drying component 280 is located between the printing guide 240 and the second drive component 230.

[0095] Specifically, the correction component 250 can adjust the position of paper A along the direction perpendicular to the transport direction, thereby ensuring the positional accuracy of paper A during transport; the drying component 280 can be a dryer.

[0096] Tension detection element 260 is used to detect the tension of paper A. By detecting the tension of paper A between the first drive element 220 and the second drive element 230, the driving speeds of the first drive element 220 and the second drive element 230 can be adjusted to keep the tension of paper A within a suitable range. Tension detection element 260 can be a tension detection roller.

[0097] Additionally, the transmission assembly 200 may also include a position detection element (not shown in the figure), which is used to detect the position of paper A. Since the correction element 250 abuts against paper A, when the position detection element detects that the position deviation of paper A exceeds a set value, the first drive element 220 can drive the correction element 250 to move to adjust the position of paper A along the transmission direction perpendicular to paper A, thereby making the position deviation of paper A meet the requirements. This configuration facilitates maintaining the positional accuracy of paper A during transmission. The position detection element can be a distance sensor, which can detect the distance between itself and the edge of paper A.

[0098] Furthermore, the speed measuring element 270 is used to measure the conveying speed of paper A; the speed measuring element 270 may include a metering roller and an encoder pressure roller arranged adjacent to each other, paper A passes between the metering roller and the encoder pressure roller, and both the metering roller and the encoder pressure roller are in contact with paper A. The two cooperate with each other to detect the linear speed of paper A during conveying.

[0099] With the above settings, the transmission component 200 can drive the paper A to be transmitted, detect the transmission speed and transmission accuracy of the paper A and make adjustments to improve the transmission accuracy of the paper A, thereby improving the printing quality of the printing device 20.

[0100] It should be noted that the transmission assembly 200 may also include multiple auxiliary guide rollers 290. These auxiliary guide rollers 290 can be used to transmit paper and may be located between the first driving member 220 and the correction member 250, between the speed measuring member 270 and the printing guide member 240, or within the drying member 280. This application embodiment does not limit the specific location or number of the auxiliary guide rollers 290, nor is it limited to the above examples.

[0101] Figure 7 This is a schematic diagram of the printing device provided in an embodiment of this application.

[0102] Secondly, refer to the appendix. Figure 7 As shown, this application embodiment also provides a printing device 20, including an inkjet device 300 and a paper A transport device 10. The inkjet device 300 includes a printhead assembly 310 corresponding to two transport components 200, and the two printhead assemblies 310 are respectively configured to face different paper surfaces of the paper A.

[0103] Specifically, the inkjet unit 300 can be located on top of the paper A transport device 10, and the two printhead assemblies 310 are respectively facing the two transport assemblies 200 and different paper surfaces of the paper A. When the paper A passes the top of the paper A transport device 10, the printhead assembly 310 can spray different colored inks towards the front and back of the paper A, thereby printing images and text on the front and back of the paper A.

[0104] It should be noted that the printhead assembly 310 may have multiple printheads 311, and the ink colors ejected by the printheads 311 may be the same or different; the positions in which the printheads 311 face may be the same or different. This application does not limit the specific structure of the printhead assembly 310, nor is it limited to the examples described above.

[0105] In the description of the embodiments of this application, it should be understood that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, the connection of internal structures of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0106] The terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In the description of this application, "multiple" means two or more, unless otherwise precisely specified.

[0107] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0108] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the structural or full structural technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A paper transport device, characterized in that, The paper transport device includes a flipping component and two transport components, each transport component having a first end and a second end disposed opposite to each other; the transport components are used to transport and dry the paper. The flipping component is connected between the two transmission components, and the paper's transmission path passes sequentially through the first and second ends of one of the transmission components, the flipping component, and the first and second ends of the other transmission component. The flipping assembly includes a first cooling element and a flipping element spaced apart, the first cooling element being used to cool the paper; the flipping element being configured to flip the paper so that the paper in another transport assembly is flipped relative to the paper in one of the transport assemblies. The flipping assembly further includes a flipping base, and both the first cooling component and the flipping component are mounted on the flipping base; The first cooling element includes a first cooling roller and two first guide rollers arranged at intervals along a first direction, wherein the first cooling roller is located between the two first guide rollers along the first direction; Along the second direction, the first cooling roller and the first guide roller are located on different sides of the flipping seat, and the two first guide rollers are arranged on the same side. The second direction intersects with the first direction. The paper's transport path sequentially bypasses one of the first guide rollers, the first cooling roller, and the other first guide roller, and the transport direction of the cooled paper remains unchanged. The flipping component includes a second guide roller and a third guide roller arranged in a crisscross pattern, and the paper's transport path sequentially bypasses the second guide roller and the third guide roller; the second guide roller and the third guide roller are each used to flip the paper once; The extension direction of the second guide roller intersects the extension direction of the third guide roller and also intersects the first direction; The angles formed by the first direction with the extension direction of the second guide roller and the extension direction of the third guide roller are equal. The flipping assembly further includes a second cooling element, which extends along the first direction; Along a third direction, the orthographic projection of the second cooling element on the flipping seat overlaps at least partially with the orthographic projections of the second guide roller and the third guide roller on the flipping seat; The third direction intersects the second direction and also intersects the extension direction of the second guide roller and the extension direction of the third guide roller.

2. The paper transport device according to claim 1, characterized in that, The flipper has an input side and an output side, the input side facing the second end of one of the transport components, and the output side facing the first end of the other transport component; the flipper is configured to flip the paper so that the paper at the output side is flipped relative to the paper at the input side. The first cooling element is disposed near the paper feed side of the flipping element; or, the first cooling element is disposed near the paper output side of the flipping element.

3. The paper transport device according to claim 1, characterized in that, The flipping component also includes two parallel and spaced fourth guide rollers, which extend along the third direction. Along the first direction, the two fourth guide rollers are located on opposite sides of the second guide roller and the third guide roller, and are disposed away from the second guide roller and the third guide roller.

4. The paper transport device according to any one of claims 1-3, characterized in that, The transmission component includes a mounting base and a first drive, a second drive, and a printing guide mounted on the mounting base; The first driving member and the second driving member are respectively close to the first end and the second end, and are respectively located on opposite sides of the printing guide, at least the printing guide is located on the paper transport path.

5. The paper transport device according to claim 4, characterized in that, The first and second drive members, which are away from the flipping assembly, are both located on the paper transport path; At least one of the first and second drive members near the flipping assembly is located on the paper transport path.

6. The paper transport device according to claim 4, characterized in that, The transmission assembly further includes a correction component, a tension detection component, a speed measuring component, and a drying component, all of which are located on the transmission path of the paper. The correction component is located on the side of the printing guide closer to the first end. The tension detection component and the speed measuring component are both located between the first driving component and the printing guide. The speed measuring component is closer to the printing guide than the tension detection component. The drying component is located between the printing guide and the second driving component.

7. A printing device, characterized in that, The invention includes an inkjet device and a paper transport device as described in any one of claims 1-6, wherein the inkjet device includes printhead assemblies corresponding to two transport components, and the two printhead assemblies are respectively configured to face different surfaces of the paper.

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