A feed shaft and a printer

Abstract

The application relates to the technical field of printers, in particular to a material feeding shaft and a printer. Specifically, the material feeding shaft comprises a first shaft body, a first free end and a first connecting end at two ends in the extension direction of the first shaft body; a second shaft body, a second free end and a second connecting end at two ends in the extension direction of the second shaft body; a differential mechanism, a first seat body connected with the first connecting end and rotating at the same angular velocity, a second seat body connected with the second connecting end and rotating at the same angular velocity, and a rotating assembly rotatingly connected with the first seat body and the second seat body respectively, and the rotating assembly can make the first shaft body and the second shaft body have different angular velocities. By arranging the differential mechanism between the first shaft body and the second shaft body, the first shaft body and the second shaft body can have different angular velocities, and the same linear velocity can be output when the first shaft body and the second shaft body are respectively provided with material rolls with different thicknesses, so that the utilization efficiency of the equipment is improved.

Description

Technical Field

[0001] This application relates to the field of printer technology, specifically to a feeding shaft and a printer. Background Technology

[0002] In existing technologies, when printing wide-format images, two or more rolls of material are often placed side by side to improve printing efficiency.

[0003] However, in actual industrial production, it is difficult to ensure that the remaining material is the same when multiple rolls are placed side by side, which makes it difficult to keep the output speed of different rolls consistent.

[0004] In view of the above, this application is hereby submitted.

[0005] Application content

[0006] The purpose of this application is to provide a feeding shaft and a printer to solve at least one of the technical problems mentioned in the background art.

[0007] Specifically, in the first aspect of this application, a feeding shaft is provided, comprising:

[0008] The first shaft includes a first free end and a first connecting end at both ends in its extending direction;

[0009] The second shaft includes a second free end and a second connecting end at both ends in its extending direction;

[0010] The differential mechanism includes a first base connected to a first connecting end and rotating at the same angular velocity, a second base connected to a second connecting end and rotating at the same angular velocity, and a rotating assembly rotatably connected to the first base and the second base respectively, wherein the rotating assembly enables the first shaft and the second shaft to have different angular velocities.

[0011] By adopting the above technical solution, a differential speed mechanism is set between the first shaft and the second shaft, which enables the first shaft and the second shaft to have different angular velocities. This allows the output of the same linear speed when the first shaft and the second shaft are equipped with material rolls of different thicknesses, thereby improving the utilization efficiency of the equipment.

[0012] Preferably, the first shaft, the second shaft, and the differential mechanism have substantially the same outer diameter, so that the feeding shaft has a substantially flat outer surface, for setting the same roll of material across the first shaft and the second shaft on the feeding shaft.

[0013] Preferably, the first shaft has a first receiving cavity at one end near the rotating assembly, and the first seat is at least partially disposed within the first receiving cavity.

[0014] Preferably, the first receiving cavity has a first retaining platform, and the first seat has a first protrusion, the first protrusion cooperating with the first retaining platform.

[0015] Preferably, the second shaft has a second receiving cavity at one end near the rotating assembly, and the second seat is at least partially disposed within the second receiving cavity.

[0016] Preferably, the second receiving cavity has a second retaining platform, and the second seat has a second protrusion, which cooperates with the second retaining platform.

[0017] Preferably, a first drive shaft is rotatably disposed within the first receiving cavity, and the first drive shaft drives the rotating assembly to rotate.

[0018] Preferably, the end of the first shaft away from the rotating component is connected to a power input mechanism, and the first drive shaft transmits the torque input by the power input mechanism to the rotating component of the differential mechanism, so that the rotating component rotates under the drive of the first drive shaft.

[0019] Preferably, the rotating assembly includes a second drive shaft and a first gear set disposed on the second drive shaft. The second drive shaft is connected to the first drive shaft and rotates at the same angular velocity as the first drive shaft. The first gear set meshes with the first seat and the second seat respectively.

[0020] Preferably, a second gear is provided at one end of the first seat body near the second seat body, and a third gear is provided at one end of the second seat body near the first seat body, and the second gear and the third gear mesh with the first gear set.

[0021] Preferably, the second gear and the third gear are located outside the second transmission shaft and have clearances with the second transmission shaft, and the first gear set rotates around the second transmission shaft.

[0022] Preferably, the end of the second drive shaft away from the first drive shaft is rotatably disposed in the first housing.

[0023] Preferably, the differential mechanism further includes a maintenance component, which includes a detachable plate and a movable plate located at a first position. The detachable plate is detachably connected to a first seat and / or a second seat. The movable plate is sleeved on the outer wall of the rotating component, and the detachable plate abuts against the movable plate in the length direction of the feeding shaft.

[0024] Preferably, after the detachable plate is removed, the movable plate can be moved to a first position, exposing at least part or all of the outer wall of the rotating component to the operator's view, which facilitates the maintenance of the rotating component.

[0025] Preferably, the detachable plate includes a first plate body and a second plate body, the first plate body and the second plate body being detachably connected to the first base body or the second base body respectively, and when the first plate body and the second plate body are fixed to the first base body or the second base body, the movable plate is limited so that it cannot move into the first position.

[0026] A second aspect of this application provides a printer, comprising:

[0027] The feeding shaft as described in the first aspect of this application is used to hold the roll of material to be printed;

[0028] Printer body,

[0029] A printing platform is located above the printer body. The printing platform is equipped with a guide belt to move the printing material extending from the feed shaft from one end of the printing platform to the other end.

[0030] The collect roller is used to collect the printing material fed by the self-printing platform.

[0031] Preferably, the first free end and the second free end of the feeding shaft are fixed to the printer body.

[0032] Preferably, the printer body is provided with a first positioning plate, which extends from the printer body and is connected to the differential speed mechanism of the feeding shaft to limit its movement in the diametrical direction.

[0033] Preferably, the first positioning plate includes a first support plate and a first limiting plate. The end of the first limiting plate near the printer body is rotatably connected to the first support plate, and the end away from the printer body is detachably fixedly connected to the first support plate. The differential mechanism is mounted between the first support plate and the first limiting plate.

[0034] Preferably, the first support plate has a first positioning groove, and the differential mechanism abuts against the first positioning groove.

[0035] Preferably, the first positioning groove has a first guide wheel and a second guide wheel spaced apart, and the differential mechanism is located between the first guide wheel and the second guide wheel.

[0036] Preferably, the first limiting plate has a first positioning wheel, and when the first limiting plate is fixedly connected to the first support plate, the first positioning wheel abuts against the rotating assembly.

[0037] Preferably, the first positioning wheel abuts against the movable plate. More preferably, the first positioning wheel abuts against the middle of the movable plate, and the movable plate is positioned by only the first guide wheel, the second guide wheel, and the first positioning wheel.

[0038] Preferably, a third card slot is provided at the end of the first support plate away from the printer body, and a buckle that cooperates with the third card slot is provided at the end of the first limiting plate away from the printer body.

[0039] Preferably, the printing platform has a drive roller for driving the guide belt to move.

[0040] Preferably, a pressure roller is provided above the printing platform, and the pressure roller is located close to the guide belt to prevent the printing material from wrinkling. Adjacent pressure rollers form a printing area.

[0041] In summary, this application has the following beneficial effects:

[0042] 1. The feeding shaft provided in this application, by setting a differential speed mechanism between the first shaft and the second shaft, enables the first shaft and the second shaft to have different angular velocities, thereby achieving the same linear speed output when the first shaft and the second shaft are respectively set with material rolls of different thicknesses, thus improving the utilization efficiency of the equipment.

[0043] 2. The feeding shaft provided in this application has a basically flat outer surface by setting the outer diameter of the first shaft body, the second shaft body, and the differential mechanism to be basically the same. This allows the feeding shaft to switch between different scenarios such as placing multiple material rolls and placing a single material roll, thereby improving the utilization efficiency of the equipment.

[0044] 3. The feeding shaft provided in this application, by setting up detachable plates and movable plates that can cooperate with each other, allows the staff to maintain the differential mechanism without disassembling the feeding shaft as a whole, thereby improving the maintenance efficiency and ease of use of the product.

[0045] 4. The printer provided in this application can improve the fixing effect of the feeding shaft by setting a first support plate and a first limiting plate that cooperate with each other. At the same time, it occupies little space, is easy to use, and causes less damage to the differential mechanism, thus having a good industrial application effect. Attached Figure Description

[0046] 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 This is a schematic diagram of a printer in one embodiment of this application;

[0048] Figure 2This is a schematic diagram of a feeding shaft in one embodiment of this application (the middle parts of the first shaft and the second shaft are hidden due to length).

[0049] Figure 3 for Figure 2 A sectional view;

[0050] Figure 4 This is a schematic diagram of a differential mechanism in one embodiment of this application;

[0051] Figure 5 This is a cross-sectional view of the differential mechanism in operation according to one embodiment of this application;

[0052] Figure 6 This is a cross-sectional view of the differential mechanism in maintenance status according to one embodiment of this application;

[0053] Figure 7 This is a schematic diagram of the connection between the middle of the feeding shaft and the first positioning plate in one embodiment of this application;

[0054] Figure 8 This is a schematic diagram of the connection between the middle of the feeding shaft and the first positioning plate in one embodiment of this application (the first shaft and the second shaft are hidden);

[0055] Figure 9 This is a schematic diagram of the first positioning plate in one embodiment of this application;

[0056] Figure 10 This is a schematic diagram of another angle of the first positioning plate in one embodiment of this application.

[0057] Explanation of reference numerals in the attached figures

[0058] The technical solution of this application can be more clearly understood and explained through the above description of the reference numerals in the accompanying drawings and in conjunction with the embodiments of this application.

[0059] 1. First shaft; 11. First free end; 12. First connecting end; 13. First receiving cavity; 131. First locking platform; 132. First drive shaft; 133. Power input mechanism; 2. Second shaft; 21. Second free end; 22. Second connecting end; 23. Second receiving cavity; 231. Second locking platform; 3. Differential mechanism; 31. First seat; 311. First boss; 312. Second gear; 313. First seat body; 314. Second limiting plate; 315. First positioning screw; 32. Second seat; 321. Second boss; 322. Third gear; 323. Second seat body; 324. Second positioning screw; 33. Rotating assembly; 331. Second drive shaft; 3311. Snap ring; 332. First gear set; 341. First position; 342. Detachable plate; 343. Movable plate; 4. Material roll; 5. Printer body; 51. Printing platform; 52. Guide belt; 53. First positioning plate; 531. First support plate; 5311. First positioning groove; 53111. First guide wheel; 53112. Second guide wheel; 5312. Third clamping table; 532. First limiting plate; 5321. First positioning wheel; 5322. Buckle; 54. Mounting base; 541. First horizontal plate; 542. Second horizontal plate; 5421. Set screw; 543. Third limiting plate; 55. Pressure roller. Detailed Implementation

[0060] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0061] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0062] The present application will be described in detail below through examples.

[0063] In existing technologies, when printing wide-format images, two or more rolls of printing material are often placed side by side to improve printing efficiency. However, in actual industrial production, it is difficult to ensure that the remaining material is the same when multiple rolls are placed side by side. Rolls with different remaining material have different outer circumferences, which makes it difficult to keep the output speed of different rolls consistent.

[0064] To address the technical problems existing in current printing equipment, the inventive concept of this application is to provide a feeding shaft, comprising: a first shaft body, including a first free end and a first connecting end at both ends in its extension direction; a second shaft body, including a second free end and a second connecting end at both ends in its extension direction; a differential mechanism, including a first base body connected to the first connecting end and rotating at the same angular velocity, a second base body connected to the second connecting end and rotating at the same angular velocity, and a rotating assembly rotatably connected to the first base body and the second base body respectively, wherein the rotating assembly enables the first shaft body and the second shaft body to have different angular velocities.

[0065] According to this invention concept, by setting a differential speed mechanism between the first shaft and the second shaft, the first shaft and the second shaft can have different angular velocities, thereby achieving the same linear speed when the first shaft and the second shaft are respectively equipped with material rolls of different thicknesses, thus improving the utilization efficiency of the equipment.

[0066] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0067] Based on the inventive concept of this application, in some preferred embodiments of this application, a feeding shaft is provided, with reference to... Figures 2-6 ,include:

[0068] The first shaft 1 includes a first free end 11 and a first connecting end 12 at both ends of its extension direction; the second shaft 2 includes a second free end 21 and a second connecting end 22 at both ends of its extension direction; the differential mechanism 3 includes a first seat 31 connected to the first connecting end 12 and rotating at the same angular velocity, a second seat 32 connected to the second connecting end 22 and rotating at the same angular velocity, and a rotating assembly 33 rotatably connected to the first seat 31 and the second seat 32 respectively, wherein the rotating assembly 33 enables the first shaft 1 and the second shaft 2 to have different angular velocities.

[0069] refer to Figure 1 In specific implementation, the first shaft 1 and the second shaft 2 can respectively hold the printing material roll 4, which extends from the feeding shaft and goes onto the printing platform 51 to complete the printing process. In some embodiments, the first shaft 1 and the second shaft 2 can be air shafts to fix the material roll 4 after air is supplied.

[0070] By adopting the above technical solution, by setting a differential speed mechanism 3 between the first shaft 1 and the second shaft 2, the first shaft 1 and the second shaft 2 can have different angular velocities, thereby achieving the same linear speed when the first shaft 1 and the second shaft 2 are respectively equipped with material rolls 4 of different thicknesses, thus improving the utilization efficiency of the equipment.

[0071] In some preferred embodiments, reference Figures 2-3 The first shaft 1, the second shaft 2, and the differential mechanism 3 have basically the same outer diameter, so that the feeding shaft has a basically flat outer surface, which is used to set the same material roll 4 across the first shaft 1 and the second shaft 2 on the feeding shaft.

[0072] In specific implementation, the cross-sections of the first shaft 1, the second shaft 2, and the differential mechanism 3 are basically circular. When their diameters (i.e., outer diameters) are basically the same, the connection of the three will make the outer ring of the feeding shaft relatively flat, thereby enabling the feeding shaft to hold a long roll of material spanning the first shaft 1 and the second shaft 2, increasing the application scenarios of the feeding shaft and improving production efficiency. In some embodiments, the aforementioned basically the same outer diameter means that the difference in outer diameter between any two of the first shaft 1, the second shaft 2, and the differential mechanism 3 does not exceed 5mm.

[0073] In some preferred embodiments, reference Figure 3 , Figure 5 , Figure 6 The first shaft 1 has a first receiving cavity 13 at one end near the rotating assembly 33, and the first seat 31 is at least partially disposed within the first receiving cavity 13. In some preferred embodiments, the first receiving cavity 13 has a first retaining platform 131, and the first seat 31 has a first boss 311, which cooperates with the first retaining platform 131.

[0074] In the specific implementation process, the first base 31 can be fixedly connected to the first shaft 1 through the first boss 311, so that the two can rotate at the same angular velocity.

[0075] By adopting the above technical solution, the first seat 31 can be rotated by the torque of the first shaft 1 according to the actual use scenario, based on the connection relationship between the first seat 31 and the first shaft 1.

[0076] In some preferred embodiments, reference Figures 5-6 The second shaft 2 has a second receiving cavity 23 at one end near the rotating assembly 33, and the second seat 32 is at least partially disposed within the second receiving cavity 23. In some preferred embodiments, the second receiving cavity 23 has a second retaining platform 231, and the second seat 32 has a second boss 321, which cooperates with the second retaining platform 231.

[0077] In the specific implementation process, the second base 32 can be fixedly connected to the second shaft 2 through the second boss 321, so that the two can rotate at the same angular velocity.

[0078] By adopting the above technical solution, the second seat 32 can be rotated by the torque of the second shaft 2, or the second shaft 2 can be rotated by the torque of the second seat 32, depending on the actual usage scenario.

[0079] In some preferred embodiments, a first drive shaft 132 is rotatably disposed within the first receiving cavity 13, and the first drive shaft 132 drives the rotating assembly 33 to rotate.

[0080] In specific implementation, the first drive shaft 132 can be used to transmit externally input torque to the rotating component 33, driving it to rotate.

[0081] In some preferred embodiments, the end of the first shaft 1 away from the rotating component 33 is connected to a power input mechanism, and the first drive shaft 132 transmits the torque input by the power input mechanism 133 to the rotating component 33 of the differential mechanism 3, so that the rotating component 33 rotates under the drive of the first drive shaft 132.

[0082] In specific implementation, the power input mechanism 133 is fixedly connected to the first transmission shaft 132 and extends to the outside of the first shaft body 1. In some embodiments, an external motor is connected to the power input mechanism 133 to drive it to rotate.

[0083] In some preferred embodiments, reference Figures 5-6 The rotating assembly 33 includes a second drive shaft 331 and a first gear set 332 disposed on the second drive shaft 331. The second drive shaft 331 is connected to the first drive shaft 132 and rotates at the same angular velocity as the first drive shaft 132. The first gear set 332 meshes with the first seat 31 and the second seat 32 respectively.

[0084] By adopting the above technical solution, the torque of the first transmission shaft 132 is transmitted to the transmission component 33 by setting the second transmission shaft 331. Furthermore, the torque is transmitted to the first seat 31 and the second seat 32 via the first gear set 332 on the transmission component 33. This enables the differential mechanism 3 to drive the first shaft 1 and the second shaft 2, making the overall transmission mechanism more indirect, space-saving, and ensuring energy transfer efficiency. Furthermore, the material rolls on the first shaft 1 and the second shaft 2, driven by the guide belt 52 of the printing platform 51, can achieve the same linear speed output for both material rolls due to the presence of the rotating component 33 between the first seat 31 and the second seat 32.

[0085] In the specific implementation process, refer to Figures 5-6The first gear set 332 may include one or more gears, and the first gear set 332 is circumferentially fixed on the second transmission shaft 331 and rotates about the axis of the second transmission shaft 331. In some embodiments, the second transmission shaft 331 is fixedly connected to the first transmission shaft 132, and the two rotate at the same angular velocity.

[0086] In some embodiments, a second gear 312 is provided at one end of the first seat 31 near the second seat 32, and a third gear 322 is provided at one end of the second seat 32 near the first seat 31. The second gear 312 and the third gear 322 mesh with the first gear set 332.

[0087] In the specific implementation process, the first seat body 31 includes the first seat body 313, the second seat body 32 includes the second seat body 323, and the second gear 312 and the third gear 322 are respectively fixed on the first seat body 313 and the second seat body 323 by the first positioning screw 315 and the second positioning screw 324.

[0088] By adopting the above technical solution, the transmission mechanism can be made simpler and the space utilization rate can be higher by fixing the second gear 312 and the third gear 322 on the first main body 313 and the second main body 323 respectively, and connecting them with the first gear set 332.

[0089] In some preferred embodiments, reference Figures 5-6 The second gear 312 and the third gear 322 are located outside the second transmission shaft 331 and have gaps with the second transmission shaft 331 respectively. The first gear set 332 rotates about the second transmission shaft 331.

[0090] In practical implementation, the inner diameters of the second gear 312 and the third gear 322 are slightly larger than the outer diameter of the second drive shaft 331. They are non-contactly fitted onto the outside of the second drive shaft 331, allowing the second gear 312 and the third gear 322 to rotate independently of the second drive shaft 331. Moreover, the fitted arrangement of the second gear 312 and the third gear 322 increases the meshing area between the second drive shaft 331 and the second gear 312 and the third gear 322, facilitating the transmission of torque.

[0091] In some preferred embodiments, the end of the second drive shaft 331 away from the first drive shaft 132 is rotatably disposed within the first base 31.

[0092] In the specific implementation process, a retaining ring 3311 is sleeved on the end of the second drive shaft 331 away from the first drive shaft 132, and a second limiting plate 314 is longitudinally arranged inside the first seat 31. The retaining ring 3311 is locked on the side of the second limiting plate 314 away from the first drive shaft 132. While positioning the second drive shaft 331, the resistance of the second drive shaft 331 during rotation is reduced.

[0093] In some embodiments, reference Figures 2-6 The first seat 31 and the second seat 32 are provided with cavities through them in the axial direction. The second drive shaft 331 is located in the cavity formed by the first seat 31 and the second seat 32, which facilitates the assembly of the differential mechanism and the connection with the first shaft 1 and the second shaft 2.

[0094] In some preferred embodiments, reference Figures 5-6 The differential mechanism 3 further includes a maintenance component, which includes a detachable plate 342 and a movable plate 343 located at the first position 341. The detachable plate 342 is detachably connected to the first seat 31 and / or the second seat 32. The movable plate 343 is sleeved on the outer wall of the rotating component 33. The detachable plate 342 abuts against the movable plate 343 in the length direction of the feeding shaft.

[0095] In specific implementation, when the detachable plate 342 is connected to the first base 31 and / or the second base, it is located in the first position 32. The detachable plate 342 may be provided only outside the first base 31, or only outside the second base 32, or simultaneously outside both the first base 31 and the second base 32. When simultaneously provided, there may be two detachable plates 342, and both of them may be located in the first position.

[0096] In some preferred embodiments, after the detachable plate 342 is removed, the movable plate 343 can be moved to the first position 341, exposing at least part or all of the outer wall of the rotating assembly 33 to the operator's view, which facilitates the maintenance of the rotating assembly 33.

[0097] Because the feed shaft is long and difficult to disassemble, installing a differential mechanism in its center would be very inconvenient and affect work efficiency when the differential mechanism 3 needs maintenance or repair. However, the above-mentioned technical solution ensures the integrity of the differential's exterior during use. If maintenance or repair is needed, simply remove the removable plate 342 and slide the movable plate 343 to the first position 341. At this point, the rotating component 33 of the differential mechanism is exposed to the maintenance personnel, facilitating operation.

[0098] In some preferred embodiments, reference Figures 4-6The detachable plate 342 includes a first plate body 3421 and a second plate body 3422. The first plate body 3421 and the second plate body 3422 are detachably connected to the first base body 31 or the second base body 32, respectively. When the first plate body 3421 and the second plate body 3422 are fixed to the first base body 31 or the second base body 32, the movable plate 343 is limited so that it cannot move into the first position.

[0099] In practical implementation, the first plate 3421 and the second plate 3422 can be fixed to the first base 31 or the second base 32 by bolts or screws. Preferably, the first plate 3421 and the second plate 3422 abut against each other at both ends, thereby limiting the movement of the movable plate 343. The movable plate 343 is preferably annular and sleeved on the outer wall of the rotating assembly 33. This design allows the differential mechanism 3 to be more tightly enclosed during operation, providing protection and dust prevention.

[0100] Based on the inventive concept of this application, in some preferred embodiments of this application, a printer is also provided, see reference. Figure 1 ,include:

[0101] As described in the above embodiment, the feeding shaft is used to hold the material roll 4 to be printed; the printer body 5 has a printing platform 51 located above it, and the printing platform 51 is covered with a guide belt 52, which is used to move the printing material extending from the material roll 4 on the feeding shaft from one end of the printing platform 51 to the other end; the receiving roller is used to collect the printing material conveyed from the printing platform.

[0102] In some embodiments, the guide belt 52 moves from the feeding axis to the direction of the receiving roller. When multiple rolls 4 are placed on the feeding axis, they are placed on the same guide belt 52 at the same time and are driven by the guide belt 52.

[0103] By adopting the above technical solution, since the differential speed mechanism 3 is set in the feeding shaft, multiple material rolls 4 on the feeding shaft can have the same linear speed to match the movement of the guide belt 52.

[0104] In some preferred embodiments, the first free end 11 and the second free end 21 of the feeding shaft are respectively fixed to the printer body 5.

[0105] In the specific implementation process, mounting plates extend from both ends of the printer body 5, and the first free end 11 and the second free end 21 are respectively connected to the mounting plates at both ends.

[0106] In some preferred embodiments, the printing platform has a drive roller for driving the guide belt to move.

[0107] In some preferred embodiments, a pressure roller 55 is provided above the printing platform. The pressure roller 55 is located close to the guide belt 52 to prevent wrinkles from forming in the printing material. Adjacent pressure rollers 55 form a printing area.

[0108] In some preferred embodiments, reference Figures 7-10 The printer body 5 is provided with a first positioning plate 53, which extends from the printer body 5 and is connected to the differential speed mechanism 3 of the feeding shaft, limiting its movement in the diametrical direction. Since the feeding shaft is relatively long, limiting it at the differential speed mechanism 3 can increase the overall installation stability of the feeding shaft.

[0109] In some preferred embodiments, reference Figures 7-10 The first positioning plate 53 includes a first support plate 531 and a first limiting plate 532. The end of the first limiting plate 532 closest to the printer body 5 is rotatably connected to the first support plate 531, and the end away from the printer body 5 is detachably fixedly connected to the first support plate 531. The differential mechanism 3 is mounted between the first support plate 531 and the first limiting plate 532.

[0110] By adopting the above technical solution, the fixing effect of the feeding shaft can be improved by setting the first support plate 531 and the first limiting plate 532 that cooperate with each other. At the same time, it occupies little space, is easy to use, and causes less damage to the differential mechanism 3, thus having a good industrial application effect.

[0111] In some preferred embodiments, reference Figures 7-10 The first support plate 531 has a first positioning groove 5311, and the differential mechanism 3 abuts against the first positioning groove 5311. Specifically, the first positioning groove 5311 has a first guide wheel 53111 and a second guide wheel 53112 spaced apart, and the differential mechanism 3 is disposed between the first guide wheel 53111 and the second guide wheel 53112. By adopting the above technical solution, the differential mechanism 3 is positioned by the first guide wheel 53111 and the second guide wheel 53112, which can reduce damage to the differential mechanism 3.

[0112] In some preferred embodiments, the first limiting plate 532 has a first positioning wheel 5321. When the first limiting plate 532 is fixedly connected to the first support plate 531, the first positioning wheel 5321 abuts against the rotating component 33 of the differential mechanism 3.

[0113] In some preferred embodiments, the first positioning wheel 5321 abuts against the movable plate 343. Further, the first positioning wheel 5321 abuts against the middle of the movable plate 343, and the movable plate 343 is positioned by the first guide wheel 53111, the second guide wheel 53112, and the first positioning wheel 5321.

[0114] By adopting the above technical solution, the rotating component 33 can be positioned at three points using the first guide wheel 53111, the second guide wheel 53112, and the first positioning wheel 5321. This provides a good positioning effect while reducing wear on the rotating component 33. Simultaneously, by placing the first positioning wheel 5321 against the center of the movable plate 343, and ensuring that the first guide wheel 53111, the second guide wheel 53112, and the first positioning wheel 5321 are located in the same plane, the space occupied by the first support plate 531 and the first limiting plate 532 can be reduced, making the differential mechanism 3 more compact and avoiding mutual interference or friction with the material roll 4. Furthermore, the movable plate 343 has a gap with the rotating component 33, and the movable plate 343 is made of a material with high mechanical strength, ensuring that its positioning with the first guide wheel 53111, the second guide wheel 53112, and the first positioning wheel 5321 will not affect the normal operation of the differential mechanism 3.

[0115] In some preferred embodiments, reference Figures 7-10 The first support plate 531 has a third card holder 5312 at one end away from the printer body 5, and the first limiting plate 532 has a buckle 5322 that cooperates with the card holder at one end away from the printer body 5. The buckle 5322 is detachably installed on the third card holder 5312. When the buckle 5322 is locked, the first guide wheel 53111, the second guide wheel 53112, and the first positioning wheel 5321 abut against the rotating component 33 to position it.

[0116] In some preferred embodiments, reference Figures 9-10 The printer body 5 has a mounting base 54, and the first support plate 531 is rotatably disposed on the mounting base 54.

[0117] In the specific implementation process, the mounting base 54 has a first horizontal plate 541 and a second horizontal plate 542 arranged horizontally at intervals. A third limiting plate 543 is vertically connected between the first horizontal plate 541 and the second horizontal plate 542. The third limiting plate 543 plays a limiting role on the first support plate 531 on the horizontal side, so that it can be set perpendicular to the printer body 5.

[0118] Specifically, the third limiting plate 543 is provided with mounting holes. When the first support plate 531 is working, it is fixed to the third limiting plate 543 through the mounting holes, and the differential mechanism 3 is further limited by the first support plate 531. In some preferred embodiments, the second horizontal plate 542 is equipped with a movable set screw 5421. The set screw 5421 passes through the second horizontal plate 542 and can abut against the lower edge of the first support plate 531 when the first support plate 531 is fixed to the third limiting plate 543, so as to increase the fixing effect.

[0119] In the specific implementation process, when the feeding shaft only needs to hold a through roll of material, the roll of material needs to cross the differential mechanism from the first shaft to the second shaft. At this time, the first support plate 531 is removed from the third limiting plate 543 and rotated to the side away from the third limiting plate 543 so that it is separated from the feeding shaft.

[0120] By adopting the above technical solution, on the one hand, it can be ensured that when two material rolls are placed on the feeding shaft, the middle part can be stably fixed by the first support plate 531. On the other hand, when only one long material roll is placed on the feeding shaft, the first support plate 531 and the first limiting plate 532 can be removed, which increases the applicable scenarios of the feeding shaft and improves production efficiency.

[0121] It should be noted that, for those skilled in the art, the technical features in the above embodiments can be freely combined, and the resulting technical solutions also belong to the embodiments disclosed in this application.

[0122] Furthermore, without departing from the principles of this application, several improvements and modifications may be made to this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A feeding shaft, characterized in that: include: The first shaft includes a first free end and a first connecting end at both ends in its extending direction; The second shaft includes a second free end and a second connecting end at both ends in its extending direction; The differential mechanism includes a first base connected to a first connecting end and rotating at the same angular velocity, a second base connected to a second connecting end and rotating at the same angular velocity, and a rotating assembly rotatably connected to the first base and the second base respectively, wherein the rotating assembly enables the first shaft and the second shaft to have different angular velocities. The differential mechanism also includes a maintenance component, which includes a detachable plate and a movable plate located at a first position. The detachable plate is detachably connected to a first seat and / or a second seat. The movable plate is sleeved on the outer wall of the rotating component, and the detachable plate abuts against the movable plate in the length direction of the feeding shaft. After the detachable plate is removed, the movable plate can be moved to a first position, exposing at least part or all of the outer wall of the rotating assembly.

2. The feeding shaft according to claim 1, characterized in that: The first shaft, the second shaft, and the differential mechanism have essentially the same outer diameter, so that the feeding shaft has an essentially flat outer surface, which is used to set the same roll of material across the first shaft and the second shaft on the feeding shaft.

3. The feeding shaft according to claim 1, characterized in that: The first shaft has a first receiving cavity at one end near the rotating assembly, and the first seat is at least partially disposed within the first receiving cavity.

4. The feeding shaft according to claim 3, characterized in that: A first drive shaft is rotatably disposed within the first receiving cavity, and the first drive shaft is rotatably connected to the rotating assembly.

5. The feeding shaft according to claim 4, characterized in that: The end of the first shaft away from the rotating component is connected to a power input mechanism. The first drive shaft transmits the torque input by the power input mechanism to the rotating component of the differential mechanism, causing the rotating component to rotate under the drive of the first drive shaft.

6. The feeding shaft according to claim 5, characterized in that: The rotating assembly includes a second drive shaft and a first gear set disposed on the second drive shaft. The second drive shaft is connected to the first drive shaft and rotates at the same angular velocity as the first drive shaft. The first gear set meshes with the first seat and the second seat respectively.

7. The feeding shaft according to claim 6, characterized in that: A second gear is provided at the end of the first seat body near the second seat body, and a third gear is provided at the end of the second seat body near the first seat body. The second gear and the third gear mesh with the first gear set.

8. The feeding shaft according to any one of claims 1-7, characterized in that: The detachable plate includes a first plate body and a second plate body. The first plate body and the second plate body are detachably connected to the first base body or the second base body, respectively. When the first plate body and the second plate body are fixed to the first base body or the second base body, the movable plate is limited so that it cannot move into the first position.

9. A printer, comprising: The feeding shaft as described in any one of claims 1-8 is used to hold the roll of material to be printed; Printer body, A printing platform is located above the printer body. The printing platform is equipped with a guide belt to move the printing material extending from the feed shaft from one end of the printing platform to the other end. The collect roller is used to collect the printing material fed by the self-printing platform.

10. The printer according to claim 9, characterized in that: The printer body is provided with a first positioning plate, which extends from the printer body and is connected to the differential speed mechanism of the feeding shaft, limiting its movement in the diametrical direction.

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