An inkjet device

Abstract

The utility model discloses a kind of printing equipment, including rack, transport component, sensor and printing module;Transport component is located on rack, and transport component has printing surface;Sensor is located on rack;Printing module includes first adjusting component and first printing component, first printing component is located above printing surface, first adjusting component is electrically connected with sensor, and is drivingly connected with first printing component.In the printing equipment of the present application, the thickness of paper can be detected by the sensor, since the printing module includes the first adjusting component and the first printing component, the first adjusting component is electrically connected with the sensor, and is drivingly connected with the first printing component, so that the first adjusting component can adjust the height of the first printing component according to the detection result of the sensor, so that the distance between the printing component and the paper on the printing surface is always maintained within the predetermined distance range, so that the pattern printed on the paper by the printing component has a better visual effect.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing technology, and in particular to an inkjet printing device. Background Technology

[0002] In the process of printing books and periodicals, the paper needs to be fed to the printing surface in sequence so that the inkjet printing unit can print on the paper on the printing surface.

[0003] However, during book and magazine printing, the distance between the paper surface and the printing assembly varies depending on the paper thickness. For thicker paper, the distance is smaller, making it difficult for the ink sprayed by the printing assembly to spread sufficiently, resulting in a blurry printed pattern that affects the visual effect. Conversely, for thinner paper, the distance is larger, causing the ink sprayed by the printing assembly to spread too much, also resulting in a blurry printed pattern that affects the visual effect. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art. This utility model provides a printing device, and the pattern printed on paper using the printing device of this embodiment has a better visual effect.

[0005] The inkjet printing equipment provided according to the embodiments of this utility model includes a frame, a transport component, a sensor, and an inkjet printing module; the transport component is disposed on the frame and has a printing surface, and is used to transport paper to move sequentially along the printing surface; the sensor is disposed on the frame and is used to detect the thickness of the paper transported by the transport component; the inkjet printing module includes a first adjustment component and a first inkjet printing component, the first inkjet printing component is disposed above the printing surface, the first adjustment component is electrically connected to the sensor and is drivenly connected to the first inkjet printing component, and the first adjustment component can adjust the height distance between the first inkjet printing component and the printing surface according to the detection result of the sensor.

[0006] The inkjet printing equipment described in this utility model has at least the following beneficial effects: In the inkjet printing equipment of this application, during the process of the transport component transporting the paper to the printing surface, the sensor can detect the thickness of the paper. Since the inkjet printing module includes a first adjustment component and a first inkjet printing component, the first adjustment component is electrically connected to the sensor and drivenly connected to the first inkjet printing component. Thus, the first adjustment component can adjust the height of the first inkjet printing component according to the detection result of the sensor, so that the distance between the inkjet printing component and the paper on the printing surface is always kept within a preset distance range, thereby maintaining a good visual effect for the pattern printed on the paper by the inkjet printing component.

[0007] According to the inkjet printing equipment described in the embodiment of this utility model, the first adjustment component includes a first mounting frame and a first driver. The first mounting frame includes multiple first mounting plates, which are distributed at intervals around the first inkjet printing component in the horizontal direction. The first inkjet printing component and the first mounting plates are slidably connected relative to each other in the vertical direction. The first driver is driven to the first inkjet printing component and is used to drive the first inkjet printing component to perform lifting and lowering movements.

[0008] According to the inkjet printing device described in the embodiment of the present utility model, a first inkjet printing component is provided with a vertically extending first slide rail, a first slider is slidably provided on the first slide rail, a pad is installed on the side of the first mounting plate near the first inkjet printing component, the first slider and the pad are connected, a clearance area is formed between the first mounting plate and the first inkjet printing component, and the first driver is at least partially located in the clearance area.

[0009] According to the inkjet printing equipment described in the embodiment of this utility model, the first driver includes a first motor, a lead screw, and a sleeve. The lead screw extends vertically and extends into the clearance area. The sleeve is threadedly connected to the lead screw and connected to one end of the first mounting plate near the first inkjet printing assembly. The first motor is mounted on the first inkjet printing assembly and connected to the lead screw. The first motor is used to drive the lead screw to rotate.

[0010] According to the inkjet printing equipment described in the embodiment of this utility model, the inkjet printing module further includes a second inkjet printing component, which is distributed at intervals with the first inkjet printing component along a first horizontal direction, and the second inkjet printing component is fixedly connected to the first inkjet printing component.

[0011] According to the inkjet printing equipment described in this embodiment of the present invention, multiple first mounting plates are distributed on opposite sides of the first inkjet printing assembly in the second horizontal direction, and the second horizontal direction is spaced at a certain angle from the first horizontal direction; the first mounting frame also includes multiple second mounting plates, which are distributed on opposite sides of the second inkjet printing assembly in the second horizontal direction, and the second inkjet printing assembly and the second mounting plates are slidably connected relative to each other in the vertical direction.

[0012] According to the inkjet printing equipment described in the embodiment of this utility model, the inkjet printing module further includes a second adjustment component. The second adjustment component is connected to the first mounting frame and is used to drive the first mounting frame to move in the horizontal direction so that the first inkjet printing component moves to or moves out directly above the printing surface.

[0013] According to the inkjet printing equipment described in this embodiment of the present invention, the second adjustment component includes a second mounting frame and a second driver. The second mounting frame is provided with a horizontally extending second slide rail, and a second slider is slidably provided on the second slide rail. The first mounting frame is connected to the second slider. The second driver includes a second motor, a transmission belt, and a clamping member. The clamping member is mounted on the transmission belt and connected to the second slider. The motor is connected to the transmission belt for transmission. Under the drive of the motor, the transmission belt can drive the second slider to slide along the second slide rail through the clamping member.

[0014] According to the inkjet printing equipment of the present invention, the transport component includes a guide roller for guiding the movement of paper, a channel is formed between the sensor and the guide roller to allow the paper to pass through, and the sensor is used to detect the distance between the sensor and the paper on the roller surface of the guide roller.

[0015] According to the inkjet printing equipment described in this embodiment of the present invention, the transport component includes multiple conveying rollers arranged at intervals, the multiple conveying rollers together forming a conveying surface, and the conveying surface constituting a printing surface.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the structure of a printing device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of a printing module according to an embodiment of the present invention;

[0020] Figure 3 for Figure 2 A magnified view of the structure at point A of the inkjet printing module shown.

[0021] Figure 4 for Figure 2 The diagram shows the structure of the printing module after the first mounting plate is hidden.

[0022] Figure 5 for Figure 4 A magnified view of the structure at point B of the inkjet printing module shown.

[0023] Figure 6 for Figure 1 A schematic diagram of the printing equipment after the printing module is hidden.

[0024] Figure 7 for Figure 6 A magnified view of the structure at point C of the inkjet printing equipment shown.

[0025] Figure label:

[0026] Frame 10; Transport assembly 20; Conveyor roller 21; Printing surface 22; Printing module 30;

[0027] First adjusting component 100; first mounting bracket 110; first mounting plate 111; pad 111a; second mounting plate 112; frame 113; first driver 120; first motor 121; lead screw 122; sleeve 123;

[0028] First inkjet printing assembly 200; First slide rail 210; First slider 220;

[0029] Second inkjet printing assembly 300;

[0030] Second adjustment component 400; second mounting bracket 410; second slide rail 411; second slider 412; second driver 420; second motor 421; transmission belt 422; clamping member 423. Detailed Implementation

[0031] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] The following is for reference. Figures 1 to 7 The inkjet printing equipment described in this application is described in detail.

[0036] refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 According to an embodiment of the present invention, the inkjet printing equipment includes a frame 10, a transport component 20, a sensor, and an inkjet printing module 30. The transport component 20 is disposed on the frame 10 and has a printing surface 22. The transport component 20 is used to transport paper and move it sequentially along the printing surface 22. The sensor is disposed on the frame 10 and is used to detect the thickness of the paper transported by the transport component 20. The inkjet printing module 30 includes a first adjustment component 100 and a first inkjet printing component 200. The first inkjet printing component 200 is disposed above the printing surface 22. The first adjustment component 100 is electrically connected to the sensor and is drivenly connected to the first inkjet printing component 200. The first adjustment component 100 can adjust the height distance between the first inkjet printing component 200 and the printing surface 22 according to the detection result of the sensor.

[0037] It should be noted that when the printing module 30 prints on paper, the ink sprayed by the printing module 30 gradually disperses as it approaches the paper. In this case, if the distance between the printing module 30 and the paper is large, the ink dispersion is too great, resulting in a blurry pattern on the paper and affecting the display effect. Conversely, if the distance is small, the ink dispersion is too small, causing the ink to concentrate on the paper and forming color blocks, also affecting the display effect. Furthermore, when the printing equipment prints on paper, the thickness of the paper will vary among the individual sheets printed by the printing module 30. The difference lies in the relative distance between the printing module 30 and the paper surface. For paper of different thicknesses, this difference results in significant variations in the quality of the printed patterns. For example, with thicker paper, the relative distance between the printing module 30 and the paper surface is smaller, making it difficult for the ink to spread sufficiently, leading to color blocks on the paper surface and affecting the quality of the printed pattern. Conversely, with thinner paper, the relative distance between the printing module 30 and the paper surface is larger, causing the ink to spread too much, resulting in a more scattered and blurry pattern, also affecting the quality of the printed pattern.

[0038] When the printing equipment in this embodiment is working, under the drive of the transport component 20, the paper is moved one by one to the printing surface 22 so that the printing module 30 can print on the paper on the printing surface 22. The sensor is set so that it can detect the thickness of the paper. When the sensor detects that the paper thickness is large, the first adjustment component 100 can increase the height of the first printing component 200 according to the sensor detection result so that the distance between the first printing component 200 and the upper surface of the paper on the printing surface 22 is kept within a preset range. When the sensor detects that the paper thickness is small, the first adjustment component 100 can decrease the height of the first printing component 200 according to the sensor detection result so that the distance between the first printing component 200 and the upper surface of the paper on the printing surface 22 is kept within a preset range.

[0039] It is understood that by setting a sensor to detect the thickness of the paper, the first adjustment component 100 can adjust the relative distance between the first printing component 200 and the printing surface 22 according to the detection result of the sensor, so that the distance between the first printing component 200 and the upper surface of the paper on the printing surface 22 is always kept within a preset range. As a result, the printing pattern printed by the first printing component 200 on the paper on the printing surface 22 always has a good printing effect, and the printing equipment of this application can be adapted to printing on paper of various thicknesses.

[0040] In some embodiments of this utility model, reference is made to Figure 2 The first adjustment component 100 includes a first mounting frame 110 and a first driver 120. The first mounting frame 110 includes multiple first mounting plates 111, which are distributed horizontally around the first printing component 200 at intervals. The first printing component 200 and the first mounting plates 111 are slidably connected relative to each other in the vertical direction. The first driver 120 is drivenly connected to the first printing component 200 and is used to drive the first printing component 200 to perform lifting and lowering movements.

[0041] Furthermore, under the drive of the first driver 120, the first printing assembly 200 can slide vertically relative to the first mounting plate 111, thereby realizing the vertical position adjustment of the first printing assembly 200.

[0042] It should be noted that although there are differences in thickness between different sizes of paper, the difference in thickness between the papers is basically at the millimeter level. Correspondingly, the height adjustment of the first printing component 200 for printing on different sizes of paper is also basically at the millimeter level. In other words, the height adjustment accuracy of the first printing component 200 is required to be high.

[0043] It is understandable that by setting multiple first mounting plates 111, and distributing the multiple first mounting plates 111 at intervals around the first printing assembly 200 in the horizontal direction, the displacement of the first printing assembly 200 in the vertical direction is more stable under the drive of the first driver 120, thereby making the vertical position adjustment of the first printing assembly 200 more precise.

[0044] In some embodiments of this utility model, reference is made to Figure 2 , Figure 4 and Figure 5 The first printing assembly 200 is provided with a vertically extending first slide rail 210, and a first slider 220 is slidably provided on the first slide rail 210. A pad 111a is installed on the side of the first mounting plate 111 near the first printing assembly 200. The first slider 220 is connected to the pad 111a. A clearance area is formed between the first mounting plate 111 and the first printing assembly 200. The first driver 120 is at least partially located within the clearance area.

[0045] It is understandable that by installing a pad 111a on the side of the first mounting plate 111 near the first printing assembly 200, and connecting the first slider 220 to the pad 111a, the pad 111a allows for a larger clearance area between the surface of the first mounting plate 111 and the first printing assembly 200, so as to fully accommodate the first driver 120. Since the first driver 120 is at least partially located within the clearance area, it can hide the first driver 120 to improve the overall appearance of the printing equipment. On the other hand, the first mounting plate 111 can protect the first driver 120 to extend its service life.

[0046] Further reference Figure 5 The first printing component 200 has two vertically extending first slide rails 210 corresponding to a single first mounting plate 111. The two first slide rails 210 are distributed at intervals in the left and right direction, and the first driver 120 is located between the two first slide rails 210.

[0047] It is understood that by providing two vertically extending first slide rails 210 for the first printing assembly 200 corresponding to a single first mounting plate 111, and by placing the first driver 120 between the two first slide rails 210, the first printing assembly 200 can move up and down relative to the first mounting plate 111 more stably under the drive of the first driver 120.

[0048] In some embodiments of this utility model, reference is made to Figure 5The first driver 120 includes a first motor 121, a lead screw 122, and a sleeve 123. The lead screw 122 extends vertically and into the clearance area. The sleeve 123 is threadedly connected to the lead screw 122 and connected to one end of the first mounting plate 111 near the first printing assembly 200. The first motor 121 is mounted on the first printing assembly 200 and connected to the lead screw 122. The first motor 121 is used to drive the lead screw 122 to rotate.

[0049] Understandably, under the drive of the first motor 121, the lead screw 122 rotates relative to the sleeve 123, thereby enabling the lead screw 122 to drive the first motor 121 to perform lifting and lowering movements relative to the first mounting plate 111, and in turn, enabling the first motor 121 to drive the first printing assembly 200 to perform lifting and lowering movements.

[0050] Understandably, the configuration of the lead screw 122 and sleeve 123 allows the first printing assembly 200 to be more precisely positioned in the vertical direction under the drive of the first motor 121.

[0051] In some embodiments of the present invention, the printing module 30 further includes a second printing component 300, which is distributed at intervals with the first printing component 200 along a first horizontal direction, and the second printing component 300 is fixedly connected to the first printing component 200.

[0052] For example, such as Figure 2 As shown, the first horizontal direction is the left and right direction. The printing module 30 also includes a second printing component 300. The second printing component 300 is located to the right of the first printing component 200, and the second printing component 300 is fixedly connected to the first printing component 200.

[0053] Understandably, the second printing component 300 can print on paper independently. With the cooperation of the first printing component 200 and the second printing component 300, the printing equipment can complete the printing of two sheets of paper at a time, thereby improving the printing efficiency of the printing equipment.

[0054] It is understandable that, since the second printing component 300 is fixedly connected to the first printing component 200, a single first adjustment component 100 can simultaneously adjust the height of both the first printing component 200 and the second printing component 300. The number of first adjustment components 100 is reduced, simplifying the overall structure of the printing equipment of this application and reducing the manufacturing cost of the printing equipment of this application.

[0055] In some embodiments of this utility model, multiple first mounting plates 111 are distributed on opposite sides of the first printing assembly 200 in the second horizontal direction, and the second horizontal direction is spaced at a certain angle from the first horizontal direction; the first mounting bracket 110 also includes multiple second mounting plates 112, which are distributed on opposite sides of the second printing assembly 300 in the second horizontal direction, and the second printing assembly 300 and the second mounting plates 112 are slidably connected relative to each other in the vertical direction.

[0056] For example, there are two first mounting plates 111, which are located on the front and rear sides of the first printing assembly 200, respectively. The first mounting frame 110 also includes two second mounting plates 112, which are located on the front and rear sides of the second printing assembly 300, respectively. The second printing assembly 300 and the second mounting plates 112 are slidably connected relative to each other in the vertical direction.

[0057] It is understandable that by setting multiple second mounting plates 112, the second printing assembly 300 can move stably in the vertical direction under the drive of the first printing assembly 200, thereby improving the displacement accuracy of the second printing assembly 300 in the vertical direction.

[0058] It should be noted that, depending on the requirements, the first mounting plate 111 can also be provided in three, four, or even more forms; correspondingly, depending on the requirements, the second mounting plate 112 can also be provided in three, four, or even more forms.

[0059] In some embodiments of this utility model, reference is made to Figure 2 and Figure 4 The first mounting bracket 110 also includes a frame 113, and the first mounting plate 111 and the second mounting plate 112 are both disposed on the frame 113.

[0060] It should be noted that the connection between the second mounting plate 112 and the second printing assembly 300 is the same as the connection between the first mounting plate 111 and the first printing assembly 200.

[0061] In some embodiments of the present invention, the printing module 30 further includes a second adjustment component 400, which is connected to the first mounting bracket 110 and is used to drive the first mounting bracket 110 to move in the horizontal direction so that the first printing component 200 moves to or moves out of the printing surface 22 directly above it.

[0062] Understandably, when the first printing assembly 200 needs to print on the paper on the printing surface 22, the second adjusting assembly 400 can drive the first mounting frame 110 to move horizontally, so that the first mounting frame 110 moves the first printing assembly 200 directly above the printing surface 22; when the first printing assembly 200 does not need to print on the paper on the printing surface 22, the second adjusting assembly 400 can drive the first mounting frame 110 to move horizontally, so that the first mounting frame 110 moves the first printing assembly 200 to the horizontal side of the printing surface 22.

[0063] In a further embodiment of the present invention, the second adjustment component 400 includes a second mounting bracket 410 and a second driver 420. The second mounting bracket 410 is provided with a horizontally extending second slide rail 411, and a second slider 412 is slidably provided on the second slide rail 411. The first mounting bracket 110 is connected to the second slider 412. The second driver 420 includes a second motor 421, a transmission belt 422 and a clamping member 423. The clamping member 423 is mounted on the transmission belt 422 and connected to the second slider 412. The second motor 421 is connected to the transmission belt 422. Under the drive of the second motor 421, the transmission belt 422 can drive the second slider 412 to slide along the second slide rail 411 through the clamping member 423.

[0064] For example, such as Figure 2 and Figure 3 As shown, the second adjustment assembly 400 includes a second mounting bracket 410 and a second driver 420. The second mounting bracket 410 is provided with a second slide rail 411 extending forward and backward, and a second slider 412 is provided on the second slide rail 411. The second slider 412 is slidably disposed relative to the second slide rail 411 in the forward and backward direction. The first mounting bracket 110 is connected to the second slider 412. The second driver 420 includes a second motor 421, a transmission belt 422 and a clamping member 423. The transmission belt 422 extends in the forward and backward direction. The second motor 421 is connected to the transmission belt 422 in a driving connection. The clamping member 423 is fixedly connected to the transmission belt 422 and to the second slider 412.

[0065] Thus, driven by the second motor 421, the transmission belt 422 can drive the second slide rail 411 to slide back and forth along the second slide rail 411 through the clamping member 423, thereby the second slide rail 411 can drive the first mounting bracket 110 to move in the front and back direction, so as to realize the position adjustment of the first printing assembly 200 in the front and back direction.

[0066] In some embodiments of the present invention, the transport assembly 20 includes a guide roller for guiding the movement of paper, a channel is formed between the sensor and the guide roller to allow the paper to pass through, and the sensor is used to detect the distance between the sensor and the paper on the roller surface of the guide roller.

[0067] Understandably, by setting up guide rollers, the guide rollers can tension the paper as it moves, thus making the sensor's detection of the distance between the paper and the sensor more accurate.

[0068] Understandably, when the sensor detects that the distance between the paper and the sensor is small, it means that the paper is thick. In this case, the first adjustment component 100 drives the first printing component 200 upward away from the printing surface 22; when the sensor detects that the distance between the paper and the sensor is large, it means that the paper is thin. In this case, the first adjustment component 100 drives the first printing component 200 downward towards the printing surface 22.

[0069] In some embodiments of this utility model, the transport component 20 includes multiple conveying rollers 21 arranged at intervals, the multiple conveying rollers 21 together forming a conveying surface, and the conveying surface constitutes a printing surface 22.

[0070] For example, such as Figure 7 As shown, the transport assembly 20 includes three transport rollers 21, which extend in the front-to-back direction and are spaced apart in the left-to-right direction. Thus, the common cross-section above the three transport rollers 21 forms a transport surface, which constitutes the printing surface 22.

[0071] Understandably, by setting multiple conveyor rollers 21, the paper can be tensioned on the printing surface 22 on the one hand, and the paper can be suspended in the air on the other hand, so as to prevent the ink on the paper from soaking into the conveyor component when the first printing component 200 is printing.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A printing device, characterized in that, include: frame; A transport assembly, disposed on the frame, has a printing surface, and is used to transport paper sequentially along the printing surface; A sensor, mounted on the frame, is used to detect the thickness of the paper being transported by the transport assembly; The inkjet printing module includes a first adjustment component and a first inkjet printing component. The first inkjet printing component is disposed above the printing surface. The first adjustment component is electrically connected to a sensor and drivenly connected to the first inkjet printing component. The first adjustment component can adjust the height distance between the first inkjet printing component and the printing surface according to the detection result of the sensor.

2. The inkjet printing equipment according to claim 1, characterized in that, The first adjustment component includes a first mounting frame and a first driver. The first mounting frame includes multiple first mounting plates, which are distributed horizontally around the first printing component at intervals. The first printing component is slidably connected to the first mounting plates in a vertical direction. The first driver is driven to the first printing component and is used to drive the first printing component to perform lifting and lowering movements.

3. The inkjet printing equipment according to claim 2, characterized in that, The first printing assembly is provided with a vertically extending first slide rail, and a first slider is slidably provided on the first slide rail. A pad is installed on the side of the first mounting plate near the first printing assembly. The first slider and the pad are connected. A clearance area is formed between the first mounting plate and the first printing assembly. The first driver is at least partially located within the clearance area.

4. The inkjet printing equipment according to claim 3, characterized in that, The first driver includes a first motor, a lead screw, and a sleeve. The lead screw extends vertically into the clearance area. The sleeve is threadedly connected to the lead screw and connected to one end of the first mounting plate near the first printing assembly. The first motor is mounted on the first printing assembly and connected to the lead screw. The first motor is used to drive the lead screw to rotate.

5. A printing device according to claim 2, characterized in that, The printing module further includes a second printing component, which is distributed at intervals with the first printing component along a first horizontal direction, and the second printing component is fixedly connected to the first printing component.

6. The inkjet printing equipment according to claim 5, characterized in that, Multiple first mounting plates are distributed on opposite sides of the first printing assembly in the second horizontal direction, with the second horizontal direction being spaced at a certain angle from the first horizontal direction; the first mounting frame also includes multiple second mounting plates, which are distributed on opposite sides of the second printing assembly in the second horizontal direction, and the second printing assembly and the second mounting plates are slidably connected relative to each other in the vertical direction.

7. A printing device according to claim 2, characterized in that, The printing module further includes a second adjustment component, which is connected to the first mounting bracket and is used to drive the first mounting bracket to move horizontally so that the first printing component moves to or moves out of the printing surface directly above it.

8. A printing device according to claim 7, characterized in that, The second adjustment component includes a second mounting bracket and a second driver. The second mounting bracket is provided with a horizontally extending second slide rail, and a second slider is slidably provided on the second slide rail. The first mounting bracket is connected to the second slider. The second driver includes a second motor, a transmission belt, and a clamping member. The clamping member is mounted on the transmission belt and connected to the second slider. The motor is driven by the transmission belt. Under the drive of the motor, the transmission belt can drive the second slider to slide along the second slide rail through the clamping member.

9. A printing device according to claim 1, characterized in that, The transport assembly includes a guide roller for guiding paper movement, a channel is formed between the sensor and the guide roller to allow paper to pass through, and the sensor is used to detect the distance between the sensor and the paper on the roller surface of the guide roller.

10. A printing device according to claim 1, characterized in that, The transport assembly includes multiple conveyor rollers arranged at intervals, which together form a conveyor surface, and the conveyor surface constitutes the printing surface.

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