Constant humidity printer

Abstract

The invention relates to the technical field of printers, and discloses a constant-humidity printer which can humidify a printing space through an atomization module, so that the printing space is kept in a constant-humidity state. Under the constant humidity state, the humidity basically does not change, the printing medium does not absorb moisture to expand or shrink due to the humidity change, the size stability of the printing medium is maintained, and the precision of multicolor overprinting is guaranteed. And meanwhile, in a constant-humidity environment, the phenomenon of ink flying or ink splashing caused by static electricity accumulation in a low-humidity environment can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a constant humidity printer. Background Art

[0002] In the heat transfer printing process, the printer prints the pattern to be printed onto the heat transfer film, and then solidifies the hot melt powder on the heat transfer film pattern through powder shaking, powder shaking and tunnel heating and drying. Because the precision requirements for pattern printing are very high, if there is a deviation in precision, the pattern will be blurred or blank after being transferred to the fabric.

[0003] During the printing process, due to the existence of static electricity, ink flying / splattering is easily caused during the printing process, thereby affecting the printing accuracy. Summary of the Invention

[0004] Based on the above, the object of the present invention is to provide a constant humidity printer, which can maintain constant humidity during printing, eliminate static interference, and improve printing accuracy.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a constant humidity printer, comprising: A printer body, on which a door is rotatably provided; a printing space disposed on the front side of the printer body, wherein a printing platform, a printing beam, and a printing carriage are disposed within the printing space, wherein the printing beam extends along a second direction, the printing carriage is slidably disposed on the printing beam, the printing platform is located below the printing carriage, and the printing carriage is provided with a plurality of printing nozzles; A constant humidity device is provided on one side of the printing platform, comprising a humidifying water tank, on which an atomizing module is provided, and the atomizing module is capable of humidifying the entire printing space, and a humidity detector is provided on the other side of the printing platform; A moisturizing device comprising a plurality of nozzle moisturizing boxes corresponding to the printing nozzles; A feeding chamber is provided at the rear side of the printer body; A feeding device, disposed in the feeding chamber, for feeding the printing medium to the printing platform; The printing transmission module is arranged in the printer body and located at the rear side of the printing platform, and is used for conveying the printing medium onto the printing platform.

[0006] Furthermore, a trough is provided on one side of the printing platform, the humidifying water tank is provided in the trough, and an inclined surface is provided on the top of the humidifying water tank, the inclined surface faces the outside of the printer body, the inclination angle of the inclined surface is 30° to 60°, the top of the inclined surface is lower than the top surface of the printing platform, and the inclined surface is a mirror surface.

[0007] Furthermore, the humidifying water tank further includes a mounting surface, the mounting surface being connected to the top of the inclined surface, at least one set of water pipes being provided on the mounting surface, the water pipes being connected to the cavity inside the water tank, and a water inlet being further provided on one side of the mounting surface; A first connecting plate is provided at the bottom of the humidifying water tank and at both sides of the front and rear of the water inlet, and a first connecting hole is provided on the first connecting plate; A second connecting plate is provided at the bottom of the humidifying water tank on a side away from the water inlet, and a second connecting hole is provided on the second connecting plate; The atomizing module is installed on the mounting surface, and the atomizing module includes an atomizing shell, an atomizing nozzle is provided on the top of the atomizing shell, an atomizing sheet is provided below the atomizing nozzle, and an atomizing water-absorbing cotton strip is provided below the atomizing sheet. The atomizing water-absorbing cotton strip passes through the water pipe and extends to the bottom of the internal cavity of the humidifying water tank.

[0008] Furthermore, it also includes an independent intelligent maintenance mechanism, which includes a second moisturizing injection device and a suction device connected to the nozzle moisturizing box, the second moisturizing injection device is used to inject moisturizing liquid into the nozzle moisturizing box, and the suction device is used to suck the nozzle moisturizing box, the second moisturizing injection device and the suction device are both electrically connected to an independent intelligent circuit board, the independent intelligent circuit board is connected to an independent power supply by wires, the independent intelligent circuit board controls the suction device and the second moisturizing injection device to operate at time intervals A, the nozzle moisturizing box is also connected to a first moisturizing injection device, the first moisturizing injection device is electrically connected to a printer control circuit board, the printer control circuit board is electrically connected to a printer main power supply, the nozzle moisturizing box includes a moisturizing cavity, and two groups of third connection holes are opened on the side of the nozzle moisturizing box, and the third connection holes are connected to the nozzle moisturizing cavity.

[0009] Furthermore, the feeding device includes a feeding base, the feeding base is provided with a first feeding drive module, the output end of the first feeding drive module is connected to the feeding platform, the first feeding drive module can drive the feeding platform to move along the first direction and the third direction, and two groups of feeding troughs are arranged side by side on the feeding platform, and the rolled printing medium can be placed on the feeding trough. The feeding chamber is also provided with two groups of feeding slide rails and a second feeding drive module, the feeding slide rails extend along the second direction, and two groups of feeding splints are slidably provided on the feeding slide rails, and the two groups of feeding splints are respectively arranged on both sides of the feeding platform, the output end of the second feeding drive module is connected to the feeding splint to drive the two feeding splints to approach or separate from each other in the second direction, and a fixing film head is respectively rotatably provided on the two feeding splints, and one group of the feeding splints is provided with a third feeding drive module, and the output end of the third feeding drive module is connected to the fixing film head to drive the fixing film head to rotate.

[0010] Furthermore, the two groups of feeding splints are also connected to feeding drive racks, the tooth surfaces of the two feeding drive racks are arranged opposite to each other, and the feeding chamber is also rotatably provided with a first feeding drive gear, the first feeding drive gear engages with the two racks, and the second feeding drive module includes a second feeding drive motor, and the second feeding drive motor is arranged in the feeding chamber, and its output end is connected to the first feeding drive gear.

[0011] Furthermore, the third feed drive module includes a third feed drive motor, and the third feed drive motor is arranged on one group of the feed splints, and the output end of the third feed drive motor is connected to the second feed drive gear, and the third feed drive gear and the fourth feed drive gear are also rotatably arranged on the feed splint, the second feed drive gear is engaged with the third feed drive gear, and the fourth feed drive gear is engaged with the third feed drive gear, and the film fixing head is rotatably connected to the feed splint through the film fixing shaft, and a bearing is provided between the film fixing shaft and the feed splint, and a linkage sleeve is provided on the side of the film fixing shaft away from the film fixing head. The sleeve is provided with a fifth feed drive gear for rotation, and the fifth feed drive gear is engaged with the fourth feed drive gear. A torsion spring is provided on the side of the linkage sleeve away from the fixed film head, and a slot is provided on the side of the fifth feed drive gear facing the torsion spring. One end of the torsion spring is connected to the linkage sleeve, and the other end of the torsion spring is connected to a block, which is inserted into the slot. When the block is close to the fifth feed drive gear, the third feed drive motor drives the fixed film shaft to rotate by driving the fifth feed drive gear. When the block is away from the fifth feed drive gear, the fixed film shaft idles and feeds.

[0012] Furthermore, the printing transmission module includes a transmission drive unit, a transmission main roller and a transmission film pressing unit. The transmission main roller is rotatably arranged on the rear side of the printing platform. The output end of the transmission drive unit is connected to the transmission main roller. The transmission drive unit includes a transmission drive motor. The output end of the transmission drive motor is connected to a transmission driving wheel. One end of the transmission driving wheel is connected to a first transmission follower wheel. A first transmission belt is sleeved between the transmission driving wheel and the first transmission follower wheel. The transmission film pressing unit is arranged above the transmission main roller. The printing medium is transported between the transmission main roller and the transmission film pressing unit.

[0013] Furthermore, the transmission film pressing part includes a plurality of pressure wheel mounting frames and a pressure wheel driving assembly, the pressure wheel mounting frame includes a first pressure wheel mounting plate and a second pressure wheel mounting plate, the top of the first pressure wheel mounting plate is connected to the printing beam, the bottom of the front side of the second pressure wheel mounting plate is provided with a rotating groove, the rear side of the second pressure wheel mounting plate is provided with a pressure groove, the bottom of the front side of the second pressure wheel mounting plate is rotatably provided with a rotating plate, the front side of the rotating plate is rotatably provided with a plurality of pressure wheels, a pressure wheel spring is connected between the first pressure wheel mounting plate and the tail of the rotating plate, a linkage pressure sleeve can be clamped in the pressure groove, and the linkage pressure sleeve has a hollow structure; The pressure roller drive assembly includes a pressure roller drive rod, which is sleeved on the spatial structure of the linkage pressure sleeve, and brackets are provided on both sides of the pressure roller drive rod, one end of the pressure roller drive rod is connected to the first pressure roller linkage plate, the bottom of the first pressure roller linkage plate is connected to the second pressure roller linkage plate, an inclination angle is formed between the first pressure roller linkage plate and the second pressure roller linkage plate, one end of the second pressure roller linkage plate is rotatably connected to the third pressure roller linkage plate, the third pressure roller linkage plate includes a rotary arm and a pressure arm, the rotary arm is connected to the second pressure roller linkage plate, the position between the pressure arm and the rotary arm is rotatably connected to the side of the printing platform, one end of the pressure arm extends out of the printing space, and the pressure roller drive rod is hexagonal steel.

[0014] Furthermore, the printer body is provided with an ink shaking chamber, the ink shaking chamber is provided with an ink shaking assembly, the ink shaking assembly includes an ink shaking seat, the ink shaking seat is rotatably provided with a first ink shaking shaft, a second ink shaking shaft and a third ink shaking shaft, one end of the first ink shaking shaft is provided with an ink shaking driving wheel 1 and an ink shaking driving wheel 2, one end of the transmission driving wheel is also provided with a second transmission follower wheel, a second transmission belt is sleeved between the second transmission follower wheel and the ink shaking driving wheel 1, one end of the third ink shaking shaft is provided with an ink shaking follower wheel, an ink shaking belt is sleeved between the ink shaking follower wheel and the ink shaking driving wheel 2.

[0015] The beneficial effects of the present invention are: (1) The atomization module can humidify the printing space and keep it in a constant humidity state. In a constant humidity state, the humidity will basically not change, and the print medium will not expand or shrink due to humidity changes, thus maintaining the stability of the print medium size and ensuring the accuracy of multi-color overprinting. At the same time, in a constant humidity environment, it can solve the problem of ink flying or splashing caused by static electricity accumulation in low humidity environments.

[0016] (2) When the entire printer stops working for a long time, the independent intelligent maintenance mechanism of the printer nozzle does not stop working and does not cut off the power supply. The independent power supply and independent intelligent circuit board of the independent intelligent maintenance mechanism of the printer nozzle are independently separated from the printer control circuit board and the main power supply of the printer. The independent intelligent circuit board can control the second moisturizing injection device and the suction device. The independent intelligent circuit board controls the suction device to perform a suction action and an action of injecting moisturizing liquid every time A, thereby preventing the nozzle from being blocked due to the long-term shutdown of the printer.

[0017] (3) When loading the roll printing medium, only one person is required to roll the roll medium onto the feeding slot on the feeding table, and then the first feeding drive module drives the feeding table to move along the first direction and move it to the bottom of the fixed film head. Then the first feeding drive module drives the feeding table to move along the third direction so that the two sides of the roll printing medium are aligned with the two fixed film heads respectively. Then the second feeding drive module drives the two fixed film heads to approach each other. The fixed film heads are conical structures and are inserted into the holes on both sides of the printing medium to complete the loading. The printing medium is fixed between the two fixed film heads for feeding. Finally, the feeding table is reset and the third feeding drive module drives the fixed film head for feeding. The whole process only requires one person to fill the roll printing medium into the feeding table. The whole loading process is simple and convenient.

[0018] (4) When installing the printing medium, the printing medium needs to pass through the main transmission roller and the pressure wheel first. The pressure wheel is driven by the pressure wheel drive assembly. The user only needs to gently move the pressure arm to use the linkage structure to lift or press down the pressure wheel, making film installation easier.

[0019] (5) An ink bottle can be placed on the ink shaking assembly to shake the ink evenly, and the structure of the main transmission roller is used to drive the movement of the ink shaking assembly as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without any creative work.

[0021] Figure 1 A schematic structural diagram of a constant humidity printer provided by an embodiment of the present invention; Figure 2 A schematic structural diagram of a water tank provided in an embodiment of the present invention; Figure 3 A schematic structural diagram of a water tank and an atomization module provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of an independent intelligent maintenance mechanism provided by an embodiment of the present invention; Figure 5 Another visual structural diagram of the constant humidity printer provided by an embodiment of the present invention; Figure 6 A schematic structural diagram of a feeding device provided in an embodiment of the present invention; Figure 7 A schematic structural diagram of a feeding device provided in an embodiment of the present invention without the roll-packaged printing medium; Figure 8 A schematic cross-sectional structure diagram of a linkage sleeve, a torsion spring, a fixed film head, and a fifth driving gear provided in an embodiment of the present invention; Figure 9 A schematic diagram of the structure of the rack and the first drive gear provided in an embodiment of the present invention; Figure 10 A schematic structural diagram of a first feeding drive module provided in an embodiment of the present invention; Figure 11 A structural diagram of the position of the ink shaking assembly provided in an embodiment of the present invention; Figure 12 A schematic structural diagram of a printing transmission module provided in an embodiment of the present invention; Figure 13 This is a schematic structural diagram of the pressure wheel part provided in an embodiment of the present invention.

[0022] In the picture: 11. Printer body; 12. Printer door; 13. Printing space; 14. Printing platform; 15. Printing carriage; 16. Sink; 17. Feeding chamber; 18. Ink shaking chamber; 19. Anti-static device; 2. Constant humidity device; 21. Humidification water tank; 211. Inclined surface; 212. Mounting surface; 213. Water pipe; 214. Water inlet; 215. First connecting plate; 216. First connecting hole; 217. Second connecting plate; 218. Second connecting hole; 22. Atomization module; 221. Atomization housing; 222. Atomization nozzle; 223. Atomization sheet; 224. Atomization absorbent cotton strip; 23. Humidity sensor; 3. Independent intelligent maintenance mechanism; 31. Printhead moisturizing box; 311. Third connection hole; 32. Printhead; 33. First moisturizing injection device; 34. Second moisturizing injection device; 35. Suction device; 36. Independent intelligent circuit board; 37. Independent power supply; 38. Printer control circuit board; 39. Printer main power supply; 4. Feeding device; 41. Feeding base; 411. First feeding drive module; 4111. First feeding drive motor; 4112. First screw rod; 4113. Support seat; 4114. First mounting plate; 4115. First driving cylinder; 42. Feeding platform; 421. Feeding trough; 43. Feeding rail; 431. Feeding clamp; 4311. Slider; 432. Second feeding drive module; 4321. Feeding drive rack; 4322. First feeding drive gear; 44. Film fixing head; 441. Film fixing shaft; 442. Linking sleeve; 443. Fifth feeding drive gear; 444. Torsion spring; 445. Clamping block; 45. Third feeding drive module; 452. Second feeding drive gear; 453. Third feeding drive gear; 454. Fourth feeding drive gear; 5. Printing media; 6. Print transmission module; 61. Transmission drive unit; 611. Transmission drive motor; 612. Transmission driving wheel; 613. First transmission follower wheel; 614. First transmission belt; 615. Second transmission follower wheel; 62. Transmission main roller; 63. Transmission film pressing unit; 631. Pressing wheel mounting bracket; 6311. First pressing wheel mounting plate; 6312. Second pressing wheel mounting plate; 6313. Rotating groove; 6314. Pressing groove; 632. Rotating plate; 633. Pressing wheel; 634. Linkage pressing sleeve; 64. Pressing wheel driving rod; 65. Bracket; 66. First pressing wheel linkage plate; 67. Second pressing wheel linkage plate; 68. Third pressing wheel linkage plate; 681. Rotating arm; 682. Pressing arm; 7. Ink shaking assembly; 71. Ink shaking seat; 72. First ink shaking shaft; 73. Second ink shaking shaft; 74. Third ink shaking shaft; 75. Ink shaking active wheel 1; 76. Ink shaking active wheel 2; 77. Ink shaking follower wheel; 79. Limiting chamber. DETAILED DESCRIPTION

[0023] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0025] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper," "lower," "left," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0027] In order to facilitate the description of the technical solution of the present application, the first direction, the second direction and the third direction are perpendicular to each other and correspond to the three directions of the XYZ axis respectively.

[0028] like Figures 1 to 13As shown, the present invention provides a constant humidity printer, comprising: a printer body 11, on which a door 12 is rotatably arranged, the door 12 is rotatably connected to the printer body 11, and the printer body 11; a printing space 13 is arranged on the front side of the printer body 11, and a printing platform 14, a printing beam and a printing carriage 15 are arranged in the printing space 13, the printing beam extends along the second direction, the printing carriage 15 is slidably arranged on the printing beam, and the printing carriage can be driven to slide on the printing beam by a driving mechanism, the printing platform 14 is located below the printing carriage 15, and a plurality of printing nozzles 32 are arranged on the printing carriage 15, and a constant humidity device 2 is arranged at On one side of the printing platform 14, there is a humidifying water tank 21, on which is provided an atomizing module 22, which is capable of humidifying the entire printing space 13. On the other side of the printing platform 14, there is provided a humidity detector 23; a moisturizing device, which includes a plurality of nozzle moisturizing boxes 31 corresponding to the printing nozzles 32; a feeding chamber 17, which is provided on the rear side of the printer body 11; a feeding device 4, which is provided in the feeding chamber 17 and is used to convey the printing medium 5 to the printing platform 14; a printing transmission module 6, which is provided in the printer body 11 and is located on the rear side of the printing platform 14, and is used to convey the printing medium 5 onto the printing platform 14. Specifically, in the embodiment of the present invention, the feeding device 4 conveys the printing medium 5 to the printing transmission module 6, and the printing transmission module 6 conveys the printing medium 5 to the printing platform 14, and the printing carriage 15 prints on the printing medium 5 on the printing platform 14. The printing platform 14, printing beam, printing carriage 15, nozzle 32, and moisturizing device are all prior art and do not constitute the novelties of the present invention, and are not further elaborated upon here. A static eliminator 19 is also provided between the feeding device 4 and the printing transmission module 6. The static eliminator 19 is used to remove static electricity from the printing medium 5. The static eliminator 19 is prior art and is not further elaborated upon here.

[0029] In this embodiment of the present invention, the atomization module 22 humidifies the printing space 13, maintaining a constant humidity. In this constant humidity state, the humidity remains essentially constant, preventing the print medium 5 from expanding or contracting due to moisture absorption. This maintains the dimensional stability of the print medium 5 and ensures the accuracy of multi-color overprinting. Furthermore, this constant humidity environment can prevent ink flying or splattering caused by static electricity in low-humidity environments.

[0030] When the nozzle 32 is under maintenance, the maintenance personnel often need to disassemble the nozzle 32 when checking whether the nozzle 32 is in good condition, or squat down and look up from below to check the current condition of the nozzle 32. The whole maintenance is very inconvenient. In order to solve this problem, Figures 1 to 3As shown, in some embodiments, a trough 16 is provided on one side of the printing platform 14, and the humidifying water tank 21 is disposed in the trough 16. The top of the humidifying water tank 21 is provided with an inclined surface 211, the inclined surface 211 facing the outside of the printer body 11, and the inclination angle α of the inclined surface 211 is 30° to 60°. The top of the inclined surface 211 is lower than the top surface of the printing platform 14, and the inclined surface 211 is a mirror surface. Specifically, by providing the trough 16, the top of the inclined surface 211 of the humidifying water tank 21 is lower than the top surface of the printing platform 14 when installed, and the printing carriage 15 can move above the inclined surface 211. Since the inclined surface 211 is a mirror surface with an inclination angle of 30° to 60°, the maintenance personnel of the nozzle 32 can directly observe the mirror surface with the naked eye, and can see the bottom of the nozzle 32 reflected from the mirror surface, making the maintenance of the nozzle 32 more convenient.

[0031] In some embodiments, as Figure 2 and 3As shown, the humidification water tank 21 also includes a mounting surface 212, which is connected to the top of the inclined surface 211. The mounting surface 212 is provided with at least one set of water pipes 213, two sets of which are provided. The water pipes 213 are connected to the cavity inside the humidification water tank. A water inlet 214 is also provided on one side of the mounting surface 212. Specifically, the mounting surface 212 is used to mount the atomization module 22. At the same time, the water inlet 214 is provided on one side of the mounting surface 212 to facilitate the user to add water to the humidification water tank 21. In order to fix the humidifying water tank 212, a first connecting plate 215 is provided at the bottom of the humidifying water tank 21 and on the front and rear sides of the water inlet 214, and a first connecting hole 216 is provided on the first connecting plate 215; a second connecting plate 217 is provided at the bottom of the humidifying water tank 21 on the side away from the water inlet 214, and a second connecting hole 218 is provided on the second connecting plate 217; specifically, by tightening the screws through the first connecting hole 216 and the second connecting hole 218, the humidifying water tank 21 can be fixed on the printer body 11. The atomizing module 22 is mounted on the mounting surface 212 and includes an atomizing housing 221. An atomizing nozzle 222 is disposed on the top of the atomizing housing 221. An atomizing sheet 223 is disposed below the atomizing nozzle 222. An atomizing absorbent cotton strip 224 is disposed below the atomizing sheet 223. The atomizing absorbent cotton strip 224 extends through the water pipe 213 to the bottom of the internal cavity of the humidifying water tank 21. The principle of the atomizing sheet 223 is prior art and will not be further elaborated here. In this embodiment, the atomizing absorbent cotton strip directs water to the atomizing sheet 223, which atomizes the water and then sprays it out of the nozzle to humidify the printing space 13. Furthermore, a humidity detector 23 is provided on the other side of the printing platform 14. The humidity detector 23 cooperates with the atomization module 22 to control the humidity. The printing carriage 15 will continuously drive the atomized water molecules to float during the movement, so that the detector is provided on the other side of the printing platform 14, which can monitor the critical point of the humidity well. When the humidity on the other side of the printing platform 14 has reached the critical point, it indicates that the humidity of the entire printing space 13 has reached sufficient requirements and humidification cannot continue because excessive humidity will affect the rapid adhesion of ink to the printing medium 5.

[0032] It is well known that the moisturizing of the printer nozzle 32 is extremely important, because the nozzle hole is extremely small (usually only tens of microns), and the dried ink will quickly clog the nozzle hole, causing print line breakage, color cast, or even permanent damage to the nozzle 32. A common method of moisturizing the nozzle 32 is to insert the nozzle 32 into a moisturizing box after printing is completed. The purpose of the moisturizing box is to completely seal the entire nozzle 32 plate area to form an enclosed space. This enclosed space can effectively isolate the air, greatly slow down the evaporation rate of the ink, and prevent the ink in the nozzle hole from drying, agglomerating, and clogging. In order to further moisturize, the moisturizing box is connected to a moisturizing injection device, which can inject moisturizing liquid into the moisturizing box, so that the nozzle 32 is moisturized in a humid environment, thereby preventing the nozzle hole from clogging. The moisturizing injection device is connected to the printer control circuit board, and the printer control circuit board is connected to the printer main power supply. The moisturizing injection device can only work when the entire printer is started. In a short period of time, such as two or three days, the nozzle will not be clogged when the printer is in different power states. However, if it is for a long time, such as during holidays such as National Day and Spring Festival, the printer may stop working for more than 10 days or even longer, and the nozzle is very easy to be clogged. Once the nozzle is clogged, it needs to be cleaned and debugged again. In order to solve the above problems, the embodiment of the present invention provides a constant humidity printer that also includes an independent intelligent maintenance mechanism 3, such as Figure 4As shown, it includes a second moisturizing injection device 34 and a suction device 35 connected to the nozzle moisturizing box 31. The nozzle moisturizing box 31 is a nozzle moisturizing box 31 in the prior art and is no longer redundant here. The nozzle moisturizing box 31 includes a moisturizing cavity. Two groups of third connecting holes 311 are opened on the side of the nozzle moisturizing box 31. The third connecting holes 311 are connected to the moisturizing cavity of the nozzle 32. One group of third connecting holes 31111 is connected to the second moisturizing injection device 34 and the suction device 35. The second moisturizing injection device 34 is used to inject moisturizing liquid into the nozzle moisturizing box 31. The suction device 35 is used to extract the liquid from the nozzle moisturizing box 31. The second moisturizing injection device 34 and the suction device 35 are both electrically connected to an independent intelligent circuit board 36. The independent intelligent circuit board 36 is connected to an independent power supply 37. The independent intelligent circuit board 36 controls the suction device 35 and the second moisturizing injection device 34 to operate at a time interval A. For example, if the set time interval A is 3 days, the independent control circuit board controls the suction device 35 to perform a suction action and the second moisturizing injection device 34 to inject moisturizing liquid once every day. Another set of third connection holes 311 is connected to the first moisturizing injection device 33. The first moisturizing injection device 33 is electrically connected to the printer control circuit board 38, and the printer control circuit board 38 is electrically connected to the printer's main power supply 39. In an embodiment of the present invention, when the entire printer stops working for a long time, the independent intelligent maintenance mechanism 3 of the printer nozzle 32 does not stop working and does not cut off the power supply. The independent power supply 37 and the independent intelligent circuit board of the independent intelligent maintenance mechanism 3 of the printer nozzle 32 are independently separated from the printer control circuit board 38 and the printer main power supply 39 of the printer. The independent intelligent circuit board 36 can control the second moisturizing injection device 34 and the suction device 35. The independent intelligent circuit board 36 controls the suction device 35 to perform a suction action and an action of injecting moisturizing liquid every time A, thereby preventing the nozzle from being blocked due to the long-term shutdown of the printer.

[0033] For industrial printers, in order to achieve batch printing, the printing medium 5 is usually fed in the form of a roll on the feeding device 4. The weight of the rolled printing medium 5 is usually more than 50 kilograms. It often requires multiple people to operate at the same time to fix the rolled printing medium 5 on the feeding device 4. In addition, when multiple people operate, the loading process requires lifting, which is very inconvenient. In order to solve the above problems, in some embodiments, such as Figures 5 to 10As shown, the feeding device 4 includes a feeding base 41, and a first feeding drive module 411 is provided on the feeding base 41, and the output end of the first feeding drive module 411 is connected to the feeding platform 42, and the first feeding drive module 411 can drive the feeding platform 42 to move along the first direction and the third direction, and two groups of feeding slots 421 are arranged side by side on the feeding platform 42, and the feeding slot 421 is an arc-shaped slot, and the rolled printing medium 5 can be placed on the feeding slot 421, and the rolled printing medium 5 can be stably placed on it. When loading, it is only necessary to manually roll the rolled printing medium 5 to the first feeding slot 421 first, and then roll it to the second feeding slot 421; two groups of feeding slide rails 43 and a second feeding drive module 432 are also provided in the feeding chamber 17, so The feeding rail 43 extends along the second direction, and two groups of feeding splints 431 are slidingly arranged on the feeding rail 43. A slider 4311 is provided at the bottom of the feeding splint 431, and the slider 4311 is slidingly arranged on the feeding rail 43. The two groups of feeding splints 431 are respectively arranged on both sides of the feeding platform 42. The output end of the second feeding drive module 432 is connected to the feeding splint 431 to drive the two feeding splints 431 to approach or separate from each other along the second direction. The two feeding splints 431 are respectively rotatably provided with fixed film heads 44, and the fixed film heads 444 are conical. One group of the feeding splints 431 is provided with a third feeding drive module 45, and the output end of the third feeding drive module 45 is connected to the fixed film head 44 to drive the fixed film head 44 to rotate. When the rolled printing medium 5 is loaded, it is driven by the first feeding drive module 411 to make the feeding platform 42 move in the opposite direction of the first direction, and the feeding chamber 17 will extend from the rear side of the feeding platform 42, making it convenient for people to roll the rolled printing medium 5 onto the feeding platform 42. At this time, only one person is needed to roll the rolled printing medium 5 to the feeding slot 421 on the feeding platform 42, first rolling it to the first feeding slot 421, then rolling the printing medium 5 to the second feeding slot 421, and then driving the feeding platform 42 to move in the first direction through the first feeding drive module 411, moving it to the bottom of the fixed film head 44, and then the second feeding slot 421. A feeding drive module 411 drives the feeding platform 42 to move along the third direction, so that the two sides of the roll printing medium 5 are aligned with the two fixed film heads 44 respectively, and then the second feeding drive module 432 drives the two fixed film heads 44 to approach each other. The fixed film heads 44 are conical structures, and the fixed film heads 44 are stuck in the holes on both sides of the printing medium 5 to complete the loading, thereby fixing the printing medium 5 between the two fixed die heads for feeding. Finally, the feeding platform 42 is reset, and the third feeding drive module 45 drives the fixed die head for feeding. The whole process only requires one person to pour the roll printing medium 5 into the feeding platform 42. The whole loading process is simple and convenient.

[0034] like Figures 5 to 10As shown, the two groups of feed splints 431 are also connected to a feed drive rack 4321, and the tooth surfaces of the two feed drive racks 4321 are arranged opposite to each other. The feed chamber 17 is also rotatably provided with a first feed drive gear 4322, and the first feed drive gear 4322 engages with the two racks. The second feed drive module 432 includes a second feed drive motor (not shown in the figure), and the second feed drive motor is arranged in the feed chamber 17, and its output end is connected to the first feed drive gear 4322. Specifically, the second feeding drive motor is arranged below the feeding base 41, and the second feeding drive motor drives the first feeding drive gear 4322 to rotate so that the rack moves. It should be noted that the rear side of the rack slides on a slide groove (not shown) so that the first drive gear can drive the rack to move in the second direction, and the feeding splint 431 is driven by the rack to approach or separate from each other in the second direction, so that the film heads 44 are moved closer to or separated from each other. When the film heads 44 approach each other, the film heads 44 are stuck in the holes on both sides of the roll printing medium 56. The third feeding drive module 45 includes a third feeding drive motor (not shown), which is arranged on one group of the feeding splints 431, and the output end of the third feeding drive motor is connected to the second feeding drive gear 452. The feeding splint 431 is also rotatably provided with a third feeding drive gear 453 and a fourth feeding drive gear 454. The second feeding drive gear 452 is engaged with the third feeding drive gear 453, and the fourth feeding drive gear 454 is engaged with the third feeding drive gear 453. The film fixing head 44 is rotatably connected to the feeding splint 431 through the film fixing shaft 441. A bearing is provided between the film fixing shaft 441 and the feeding splint 431. A linkage sleeve 442 is provided on the side of the film fixing shaft 441 away from the film fixing head 44. A fifth feed drive gear 443 is rotatably provided on the movable sleeve 442, and the fifth feed drive gear 443 engages with the fourth feed drive gear 454. A torsion spring 444 is provided on the side of the linkage sleeve 442 away from the fixed film head 44, and a slot is provided on the side of the fifth feed drive gear 443 facing the torsion spring 444. One end of the torsion spring 444 is connected to the linkage sleeve 442, and the other end of the torsion spring 444 is connected to a blocking block 445, and the blocking block 445 is stuck in the blocking slot. When the blocking block 445 is in close contact with the fifth feed drive gear 443, the third feed drive motor drives the fixed film shaft 441 to rotate by driving the fifth feed drive gear 443. When the blocking block 445 is away from the fifth feed drive gear 443, the fixed film shaft 441 idles and feeds.Specifically, as the rolled printing medium 5 is continuously conveyed, the stacked printing medium 5 is continuously thinning, while the rotation speed of the third feeding drive motor is constant. When the printing medium 5 is thinner, the feeding length is shorter due to the constant rotation speed of the third feeding drive motor, and the printing medium 5 is more tensioned. This tension exceeds the preset value and affects the printing accuracy. In order to make the rolled printing medium 5 continuously thinner as it is continuously conveyed and to be able to be fed under the rated controlled tension, in the embodiment of the present invention, when the fixed die head is feeding, the clamping block 445 connected to the torsion spring 444 is clamped into the clamping slot and the clamping block 445 is in close contact with the fifth feeding drive gear 443. Due to the large friction between the clamping block 445 and the fifth feeding drive gear 443, when the third drive motor drives the fifth feeding drive gear 443 to reverse, the fifth feeding drive gear 443 will drive the fixed die shaft to reverse, and the fixed die head will also reverse, first tensioning the printing medium 5 (printing). There is a printing transmission module 6 on the rear side of the printing platform 14 to press the printing medium 5). When the fixed film shaft 441 and the linkage sleeve 442 are reversed, the torsion spring 444 will be twisted, and the torsion spring 444 will be compressed. The torsion spring 444 will drive the block 445 to move, and the block 445 is separated from the fifth feeding drive gear 443. At this time, there is no friction, and the fifth feeding drive gear 443 cannot drive the fixed mold shaft to rotate. The fixed film shaft 441 rotates forward under the pulling force of the front printing platform 14. When rotating forward, it is feeding. When feeding, the fifth feeding drive gear 443 remains idle. When the fixed die shaft and the linkage sleeve 442 rotate forward, the torsion spring 444 will also be released, and the torsion spring 444 will abut the block 445 and close to the fifth feeding drive gear 443. This reciprocating movement will keep the fifth feeding drive gear 443 idle at intervals, thereby driving the fixed die shaft and the fixed die head to feed forward and reverse, so that the rolled printing medium 5 can be transported under additional tension regardless of its thickness, thereby ensuring printing accuracy.

[0035] In some embodiments, as Figure 10The first feeding drive module 411 includes two groups of first feeding drive motors 4111, the output end of the first feeding drive motor 4111 is connected to the first screw rod 4112, the first screw rod 4112 extends along the first direction, and support seats 4113 are provided on both sides of the first screw rod 4112. At least one group of first mounting plates 4114 is threadedly connected to the two first screw rods 4112, and a first driving cylinder 4115 is provided on the first mounting plate 4114. The output end of the first driving cylinder 4115 is connected to the feeding table 42. Specifically, in this embodiment, the first feeding drive motor 4111 drives the first screw rod 4112 to rotate, so that the first mounting plate 4114 can move along the first direction. The first mounting plate 4114 is provided with a first driving cylinder 4115. The first mounting plate 4114 drives the first driving cylinder 4115 to move along the first direction. The output end of the first driving cylinder 4115 is connected to the feeding table 42. The first driving cylinder 4115 can drive the feeding table 42 to move along the third direction.

[0036] In some embodiments, Figure 12 and 13 As shown, the printing transmission module 6 includes a transmission drive unit 61, a transmission main roller 62 and a transmission film pressing unit 63. The transmission main roller 62 is rotatably arranged on the rear side of the printing platform 14, and the transmission main roller is rotatably arranged in the printer body 11. The output end of the transmission drive unit 61 is connected to the transmission main roller. The transmission drive unit 61 includes a transmission drive motor 611, and the transmission drive motor 611 is installed in the printer body 11. The output end of the transmission drive motor 611 is connected to a transmission driving wheel 612, and one end of the transmission driving wheel 612 is connected to a first transmission follower wheel 613. A first transmission belt 614 is sleeved between the transmission driving wheel 612 and the first transmission follower wheel 613. The transmission film pressing unit 63 is arranged above the transmission main roller, and the printing medium 5 is transported between the transmission main roller and the transmission film pressing unit 63. Specifically, the printing medium 5 is clamped between the transmission main roller and the transmission film pressing part 63, and the transmission driving motor 611 drives the transmission active wheel 612 to rotate, and the first transmission follower wheel 613 is driven to rotate through the first transmission belt 614, thereby driving the transmission main roller to rotate, so that the printing medium 5 is transported to the printing platform 14.

[0037] When the printing medium 5 is installed, it needs to pass through the transmission main roller and the transmission film pressing part 63. Figure 12 and 13As shown, the transmission film pressing part 63 includes several pressure roller 633 mounting frames 631 and a pressure roller driving assembly, the pressure roller mounting frame 631 includes a first pressure roller mounting plate 6311 and a second pressure roller mounting plate 6312, the top of the first pressure roller mounting plate 6311 is connected to the printing beam, the bottom of the front side of the second pressure roller mounting plate 6312 is provided with a rotating groove 6313, the rear side of the second pressure roller mounting plate is provided with a pressure groove 6314, the rear side of the rotation groove 6313 is an intermediate structure, the bottom of the front side of the second pressure roller mounting plate 6312 is rotatably provided with a rotating plate 632, and the front side of the rotating plate 632 is rotatably provided with several pressure rollers 633, a pressure roller spring (not shown) is connected between the first pressure roller mounting plate 6311 and the tail of the rotating plate 632, and a linkage pressure sleeve 634 can be stuck in the pressure groove 6314, and the linkage pressure sleeve 634 is a hollow structure; the pressure roller driving The component includes a pressure roller drive rod 64, which is sleeved on the spatial structure of the linkage pressure sleeve 634, and brackets 65 are provided on both sides of the pressure roller drive rod 64, and the pressure roller drive rod 64 is supported on the bracket 65. One end of the pressure roller drive rod 64 is connected to a first pressure roller linkage plate 66, and the bottom of the first pressure roller linkage plate 66 is connected to a second pressure roller linkage plate 67. An inclination is formed between the first pressure roller linkage plate 66 and the second pressure roller linkage plate 67, and one end of the second pressure roller linkage plate 67 is rotatably connected to a third pressure roller linkage plate 68, and the third pressure roller linkage plate 68 includes a rotary arm 681 and a pressure arm 682, and the rotary arm 681 is connected to the second pressure roller linkage plate 67. The position between the pressure arm 682 and the rotary arm 681 is rotatably connected to the side of the printing platform 14, and one end of the pressure arm 682 extends out of the printing space 13, and the pressure roller drive rod 64 is hexagonal steel. Specifically, when the pressure arm 682 is pushed upward, the pressure arm rotates, the rotary arm 681 rotates, the rotary arm 681 drives the second pressure wheel linkage plate to move 67, the second pressure wheel linkage plate 67 drives the first pressure wheel linkage plate 66 to move, and the first pressure wheel 633 plate drives the pressure wheel drive rod 64 to move. The pressure wheel drive rod 64 has a small rotation angle and moves toward the rear side of the printing platform 14. The pressure wheel drive rod 64 will move out of the pressure groove 6314. At the same time, the pressure wheel drive rod 64 will press on the tail of the rotating plate 632, and the rotating plate 632 will rotate upward and lift up. At this time, the pressure wheel 633 is lifted, which can facilitate the operator to load the printing medium 5 between the main transmission roller and the pressure wheel 633.After the film is loaded, the pressure arm is pressed downward, the pressure arm rotates, the rotary arm rotates, and the rotary arm drives the second pressure roller linkage plate 67 to move. The second pressure roller linkage plate 67 drives the first pressure roller 633 to move, and the first pressure roller linkage plate drives the pressure roller drive rod to move. The pressure roller drive rod 64 also has a small rotation angle and moves toward the printing platform 14. The pressure roller drive rod 64 moves into the pressure groove 6314. At this time, the pressure roller drive rod 64 is no longer pressed on the rear end of the rotating plate 632. The rear end of the rotating plate 632 rotates downward under the elastic force of the pressure roller spring. The pressure roller 633 presses the printing medium 5 against the main transmission roller to transport the printing medium 5. When loading the printing medium 5, the printing medium 5 must first pass through the main transmission roller and the pressure roller 633. The pressure roller 633 is driven by the pressure roller drive assembly. The user only needs to gently move the pressure arm 682 to use the linkage structure to lift or press the pressure roller 633, making film loading easier.

[0038] like Figure 5 As shown, the top of the printer body 11 is where the ink system of the printer is installed. Several ink cartridges are installed on it. The ink system is connected to the nozzle 32 of the printer. The ink system belongs to the existing technology and will not be repeated here. Before adding the external ink to the ink cartridge, the ink needs to be shaken to prevent the ink from solidifying and depositing and causing clogging of the nozzle. In this embodiment, Figure 11 As shown, the printer body 11 is further provided with an ink shaking chamber 18, and the ink shaking assembly 7 is provided in the ink shaking chamber 18. The ink shaking assembly includes an ink shaking seat 71, on which a first ink shaking shaft 72, a second ink shaking shaft 73 and a third ink shaking shaft 74 are rotatably provided. One end of the first ink shaking shaft 72 is provided with an ink shaking driving wheel 1 75 and an ink shaking driving wheel 2 76, and one end of the transmission driving wheel 612 is further provided with a second transmission follower wheel 615, and a second transmission belt (not shown) is sleeved between the second transmission follower wheel 615 and the ink shaking driving wheel 1 75, and one end of the third ink shaking shaft 74 is provided with an ink shaking follower wheel 77, and an ink shaking belt is sleeved between the ink shaking follower wheel 77 and the ink shaking driving wheel 2 76. Specifically, the ink bottle is placed above the first ink shaking shaft 72, the second ink shaking shaft 73 and the third ink shaking shaft 74. There is a limiting cavity 79 on the ink shaking seat 71 and above the second ink shaking shaft 73. Through the rotation of the first ink shaking shaft 72 and the third ink shaking shaft 74, the ink bottle vibrates and shakes the ink in the limiting cavity 79, so that the ink is shaken evenly, and the structure of the main transmission roller is used to drive the action of the ink shaking assembly 7 as a whole.

[0039] Note that the above are only preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A constant humidity printer, characterized in that: include: A printer body, on which a door is rotatably provided; a printing space disposed on the front side of the printer body, wherein a printing platform, a printing beam, and a printing carriage are disposed within the printing space, wherein the printing beam extends along a second direction, the printing carriage is slidably disposed on the printing beam, the printing platform is located below the printing carriage, and the printing carriage is provided with a plurality of printing nozzles; A constant humidity device is provided on one side of the printing platform, comprising a humidifying water tank, on which an atomizing module is provided, and the atomizing module is capable of humidifying the entire printing space, and a humidity detector is provided on the other side of the printing platform; A moisturizing device comprising a plurality of nozzle moisturizing boxes corresponding to the printing nozzles; A feeding chamber is provided at the rear side of the printer body; A feeding device, disposed in the feeding chamber, for feeding the printing medium to the printing platform; The printing transmission module is arranged in the printer body and located at the rear side of the printing platform, and is used for conveying the printing medium onto the printing platform.

2. A constant humidity printer according to claim 1, characterized in that: A trough is provided on one side of the printing platform, the humidifying water tank is provided in the trough, and an inclined surface is provided on the top of the humidifying water tank, the inclined surface faces the outside of the printer body, the inclination angle of the inclined surface is 30° to 60°, the top of the inclined surface is lower than the top surface of the printing platform, and the inclined surface is a mirror surface.

3. A constant humidity printer according to claim 2, characterized in that: The humidifying water tank further includes a mounting surface connected to the top of the inclined surface, at least one set of water pipes is provided on the mounting surface, the water pipes are connected to the cavity inside the water tank, and a water inlet is also provided on one side of the mounting surface; A first connecting plate is provided at the bottom of the humidifying water tank and at both sides of the water inlet, and a first connecting hole is provided on the first connecting plate; A second connecting plate is provided at the bottom of the humidifying water tank on a side away from the water inlet, and a second connecting hole is provided on the second connecting plate; The atomizing module is installed on the mounting surface, and the atomizing module includes an atomizing shell, an atomizing nozzle is provided on the top of the atomizing shell, an atomizing sheet is provided below the atomizing nozzle, and an atomizing water-absorbing cotton strip is provided below the atomizing sheet. The atomizing water-absorbing cotton strip passes through the water pipe and extends to the bottom of the internal cavity of the humidifying water tank.

4. A constant humidity printer according to claim 1, characterized in that: It also includes an independent intelligent maintenance mechanism, which includes a second moisturizing injection device and a suction device connected to the nozzle moisturizing box, the second moisturizing injection device is used to inject moisturizing liquid into the nozzle moisturizing box, and the suction device is used to suck the nozzle moisturizing box, the second moisturizing injection device and the suction device are both electrically connected to an independent intelligent circuit board, the independent intelligent circuit board is connected to an independent power supply by wires, the independent intelligent circuit board controls the suction device and the second moisturizing injection device to operate at time intervals A, the nozzle moisturizing box is also connected to a first moisturizing injection device, the first moisturizing injection device is electrically connected to a printer control circuit board, the printer control circuit board is electrically connected to a printer main power supply, the nozzle moisturizing box includes a moisturizing cavity, and two groups of third connection holes are opened on the side of the nozzle moisturizing box, and the third connection holes are connected to the nozzle moisturizing cavity.

5. A constant humidity printer according to claim 1, characterized in that: The paper feed mechanism comprises a paper feed base, wherein the paper feed base is provided with a first feeding drive module, an output end of the first feeding drive module is connected to the feeding platform, and the first feeding drive module is capable of driving the feeding platform to move along the first direction and the third direction. Two groups of feeding troughs are arranged side by side on the feeding platform, and the rolled printing medium can be placed on the feeding trough. The feeding chamber is also provided with two groups of feeding slide rails and a second feeding drive module, and the feeding slide rails extend along the second direction and two groups of feeding splints are slidably provided on the feeding slide rails, and the two groups of feeding splints are respectively arranged on both sides of the feeding platform, and the output end of the second feeding drive module is connected to the feeding splint to drive the two feeding splints to approach or separate from each other in the second direction, and a fixing film head is respectively provided on the two feeding splints, one of which is provided with a third feeding drive module, and the output end of the third feeding drive module is connected to the fixing film head to drive the fixing film head to rotate.

6. A constant humidity printer according to claim 5, characterized in that: The two groups of feeding splints are also connected to feeding drive racks, and the tooth surfaces of the two feeding drive racks are arranged opposite to each other. The feeding chamber is also rotatably provided with a first feeding drive gear, and the first feeding drive gear engages with the two racks. The second feeding drive module includes a second feeding drive motor, and the second feeding drive motor is arranged in the feeding chamber, and its output end is connected to the first feeding drive gear.

7. A constant humidity printer according to claim 6, characterized in that: The third feeding drive module includes a third feeding drive motor, and the third feeding drive motor is arranged on one group of the feeding splints, and the output end of the third feeding drive motor is connected to the second feeding drive gear, and the third feeding drive gear and the fourth feeding drive gear are also rotatably arranged on the feeding splint, the second feeding drive gear is meshed with the third feeding drive gear, and the fourth feeding drive gear is meshed with the third feeding drive gear, and the film fixing head is rotatably connected to the feeding splint through the film fixing shaft, and a bearing is arranged between the film fixing shaft and the feeding splint, and a linkage sleeve is sleeved on the side of the film fixing shaft away from the film fixing head. A fifth feed drive gear is rotatably provided on the linkage sleeve, and the fifth feed drive gear is engaged with the fourth feed drive gear. A torsion spring is provided on the side of the linkage sleeve away from the film fixing head, and a slot is provided on the side of the fifth feed drive gear facing the torsion spring. One end of the torsion spring is connected to the linkage sleeve, and the other end of the torsion spring is connected to a block, and the block is stuck in the slot. When the block is close to the fifth feed drive gear, the third feed drive motor drives the fifth feed drive gear to rotate and drives the fixed film shaft to rotate. When the block is away from the fifth feed drive gear, the fixed film shaft idles and feeds.

8. A constant humidity printer according to claim 1, characterized in that: The printing transmission module includes a transmission drive unit, a transmission main roller and a transmission film pressing unit. The transmission main roller is rotatably arranged on the rear side of the printing platform. The output end of the transmission drive unit is connected to the transmission main roller. The transmission drive unit includes a transmission drive motor. The output end of the transmission drive motor is connected to a transmission driving wheel. One end of the transmission driving wheel is connected to a first transmission follower wheel. A first transmission belt is sleeved between the transmission driving wheel and the first transmission follower wheel. The transmission film pressing unit is arranged above the transmission main roller. The printing medium is transported between the transmission main roller and the transmission film pressing unit.

9. A constant humidity printer according to claim 8, characterized in that: The transmission film pressing part includes several pressure wheel mounting frames and a pressure wheel driving assembly, the pressure wheel mounting frame includes a first pressure wheel mounting plate and a second pressure wheel mounting plate, the top of the first pressure wheel mounting plate is connected to the printing beam, the bottom of the front side of the second pressure wheel mounting plate is provided with a rotating groove, the rear side of the second pressure wheel mounting plate is provided with a pressure groove, the bottom of the front side of the second pressure wheel mounting plate is rotatably provided with a rotating plate, the front side of the rotating plate is rotatably provided with several pressure wheels, a pressure wheel spring is connected between the first pressure wheel mounting plate and the tail of the rotating plate, the pressure groove can be clamped in a linkage pressure sleeve, and the linkage pressure sleeve has a hollow structure; The pressure roller drive assembly includes a pressure roller drive rod, which is sleeved on the spatial structure of the linkage pressure sleeve, and brackets are provided on both sides of the pressure roller drive rod, one end of the pressure roller drive rod is connected to the first pressure roller linkage plate, the bottom of the first pressure roller linkage plate is connected to the second pressure roller linkage plate, an inclination angle is formed between the first pressure roller linkage plate and the second pressure roller linkage plate, one end of the second pressure roller linkage plate is rotatably connected to the third pressure roller linkage plate, the third pressure roller linkage plate includes a rotary arm and a pressure arm, the rotary arm is connected to the second pressure roller linkage plate, the position between the pressure arm and the rotary arm is rotatably connected to the side of the printing platform, one end of the pressure arm extends out of the printing space, and the pressure roller drive rod is hexagonal steel.

10. A constant humidity printer according to claim 8, characterized in that: The printer body is also provided with an ink shaking chamber, and the ink shaking chamber is provided with an ink shaking assembly. The ink shaking assembly includes an ink shaking seat, and the ink shaking seat is rotatably provided with a first ink shaking shaft, a second ink shaking shaft and a third ink shaking shaft. One end of the first ink shaking shaft is provided with an ink shaking driving wheel 1 and an ink shaking driving wheel 2, and one end of the transmission driving wheel is further provided with a second transmission follower wheel, and a second transmission belt is sleeved between the second transmission follower wheel and the ink shaking driving wheel 1, and one end of the third ink shaking shaft is provided with an ink shaking follower wheel, and an ink shaking belt is sleeved between the ink shaking follower wheel and the ink shaking driving wheel 2.

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