A double-sided water-washing label inkjet printer

Abstract

The utility model relates to a double -sided water washes label inkjet printer belongs to inkjet printing technical field, the utility model discloses a rack and the material placing mechanism, first tensioning mechanism, first inkjet printing mechanism, first solidification lamp, turnover roll, second inkjet printing mechanism, second solidification lamp, second tensioning mechanism and material collecting mechanism that set up on the rack in proper order, first tensioning mechanism and second tensioning mechanism all include driving roller, driven roller and tensioning motor, and driving roller is located at the output end of tensioning motor, and driven roller is adjacent with driving roller and sets up to form cloth strip clamping passage between both, and the driving roller rotating speed of second tensioning mechanism is greater than the driving roller rotating speed of first tensioning mechanism, the utility model discloses can improve printing efficiency under the premise of ensuring printing quality.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printing technology, and in particular to a double-sided wash label inkjet printer. Background Technology

[0002] In the prior art, such as the Chinese patent document with authorization announcement number CN221605469U, a digital direct-injection water-washable label printer is disclosed, including a body on which a feeding air shaft, a receiving air shaft, a material printing platform, a conveyor wheel assembly, and a printing carriage are installed. The feeding air shaft holds the material to be printed, and the receiving air shaft holds the printed material that has been printed. The material printing platform is used to place and flatten the printed material. A constant temperature color box is installed on one side of the material printing platform. The conveyor wheel assembly includes multiple sets of guide rollers, tension rollers, and guide cloth rollers, which are sequentially rotated and installed on the body to convey the printed material from the feeding air shaft to the receiving air shaft. The printing carriage is slidably installed on the body for printing.

[0003] However, the aforementioned printers also suffer from low printing efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a double-sided water washing label inkjet printer that can improve printing efficiency while ensuring printing quality.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A double-sided wash label inkjet printer includes a frame and a feeding mechanism, a first tensioning mechanism, a first inkjet printing mechanism, a first curing lamp, a flipping roller, a second inkjet printing mechanism, a second curing lamp, a second tensioning mechanism, and a receiving mechanism, which are sequentially arranged on the frame.

[0007] Both the first and second tensioning mechanisms include a drive roller, a driven roller, and a tensioning motor. The drive roller is located at the output end of the tensioning motor, and the driven roller is arranged adjacent to the drive roller to form a strip clamping channel between them. The speed of the drive roller in the second tensioning mechanism is greater than that of the drive roller in the first tensioning mechanism.

[0008] Preferably, a clamping adjustment drive device for adjusting the distance between the driven roller and the driving roller is provided between the driven roller and the frame.

[0009] Preferably, both the first inkjet printing mechanism and the second inkjet printing mechanism include a front and rear telescopic drive device, a printhead, and a pad. The front and rear telescopic drive device is mounted on the frame, the printhead is located at the output end of the front and rear telescopic drive device, and the pad is located below the extended position of the printhead.

[0010] Preferably, an ink collection box is provided below the retracted position of the printhead, and a scraper is provided at the front end of the ink collection box.

[0011] Preferably, a lifting drive device is provided between the doctor blade and the frame.

[0012] Preferably, the doctor blade includes a main plate, a mounting block, and a doctor blade. The mounting block is detachably connected to the main plate, and the doctor blade is clamped between the main plate and the mounting block.

[0013] Preferably, two tension stabilizing rollers are provided between the first tensioning mechanism and the first inkjet printing mechanism.

[0014] Preferably, a first fabric conveying path and a second fabric conveying path are formed upstream and downstream of the turning roller, respectively, and both the first fabric conveying path and the second fabric conveying path are inclined.

[0015] Preferably, both the feeding mechanism and the receiving mechanism are equipped with fabric monitoring sensors.

[0016] Preferably, the feeding mechanism and the receiving mechanism are located at the same end of the frame.

[0017] The advantages of this utility model are:

[0018] 1. The fabric strip is clamped by two sets of tensioning mechanisms, and the tension between the fabric strips is achieved by the differential rotation of the active rollers of the two sets of tensioning mechanisms to ensure print quality; in addition, the two sets of tensioning mechanisms also provide the power to transport the fabric strip, so it can meet the needs of high-speed printing and improve printing efficiency.

[0019] 2. The distance between the driven roller and the driving roller is adjusted by the clamping adjustment drive device to meet the clamping requirements of different types of fabric strips and ensure printing quality;

[0020] 3. Use a scraper to remove excess ink from the print head to ensure print quality, and use an ink collection cartridge to recycle the scraped ink.

[0021] 4. For fabric strips with high elasticity, the strip can be passed between two tension stabilizing rollers to appropriately increase the conveying resistance and improve the stability of the fabric tension, thereby ensuring printing quality;

[0022] 5. By tilting the fabric conveying path upstream and downstream of the turning roller, not only is the overall conveying path length of the fabric strip shortened, which helps to ensure the stability of the fabric strip tension, but the entire equipment structure is also more compact and smaller in size. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the structure of a double-sided water-washing label inkjet printer provided in the embodiments of this specification;

[0024] Figure 2 This is a schematic diagram of the tensioning mechanism provided in the embodiments of this specification;

[0025] Figure 3 This is a schematic diagram illustrating the method by which the fabric strip passes over the tension stabilizing roller, as provided in the embodiments of this specification.

[0026] Figure 4 This is a schematic diagram of the inkjet printing mechanism provided in the embodiments of this specification;

[0027] Figure 5 This is a schematic diagram of the ink cartridge provided in the embodiments of this specification;

[0028] In the diagram: 101-House; 102-Main body plate; 103-Electrical cabinet; 104-Controller; 2-Feeding mechanism; 3-First tensioning mechanism; 31-Driven roller; 32-Driven roller; 33-Tensioning motor; 4-First inkjet printing mechanism; 41-Front and rear telescopic drive device; 42-Printhead; 43-Pad plate; 44-Ink cartridge; 45-Scraper blade; 451-Main body plate; 452-Mounting block; 46-Lifting drive device; 5-First curing lamp; 6-Turning roller; 7-Second inkjet printing mechanism; 8-Second curing lamp; 9-Second tensioning mechanism; 10-Receiving mechanism; 11-Fabric strip; 12-Tension stabilizing roller; 13-Redirecting roller; 14-Fabric monitoring sensor. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] As mentioned in the background section, existing wash label printers typically achieve tension by stretching the fabric strip using a tension roller. However, with this tensioning method, due to the elasticity of the fabric strip, the higher the printing speed, the greater the tension on the strip. Overstretching the fabric strip can negatively impact the print quality of the wash label. Therefore, to ensure print quality, these types of wash label printers need to limit the printing speed, resulting in relatively low printing efficiency.

[0031] Therefore, such as Figure 1As shown in the figure, this embodiment of the specification provides a double-sided wash label inkjet printer, including a frame and a feeding mechanism 2, a first tensioning mechanism 3, a first inkjet printing mechanism 4, a first curing lamp 5, a flipping roller 6, a second inkjet printing mechanism 7, a second curing lamp 8, a second tensioning mechanism 9, and a take-up mechanism 10, which are sequentially arranged on the frame. The overall working principle of this embodiment is as follows: The rolled strip of fabric is released from the feeding mechanism 2, passes through the first tensioning mechanism 3, and is printed on the front side at the first inkjet printing mechanism 4. After curing by the first curing lamp 5, it passes over the flipping roller 6, so that the printed front side is facing down and the unprinted back side is facing up. Then, it passes through the second inkjet printing mechanism 7 to complete the back side printing, and then passes through the second curing lamp 8 and the second tensioning mechanism 9 in sequence. Finally, it is wound up by the take-up mechanism 10. It should be noted that the feeding mechanism 2 is a passive feeding mechanism, and the take-up mechanism 10 is powered by a motor to take up the fabric.

[0032] The frame mainly includes a housing 101, a main plate 102, an electrical cabinet 103, and a controller 104. The electrical cabinet 103 is located in the lower part of the housing 101, the main plate 102 is vertically located above the electrical cabinet 103, and the controller 104 is located on the outer side of the housing. All the above-mentioned mechanisms are located on the main plate 102. At the same time, maintenance doors are provided on the front and rear sides of the housing 101 to facilitate equipment maintenance.

[0033] Unlike existing technologies, such as Figure 2 As shown, in this embodiment, both the first tensioning mechanism 3 and the second tensioning mechanism 9 include a driving roller 31, a driven roller 32, and a tensioning motor 33. The driving roller 31 and the driven roller 32 are located on the front side of the main plate 102, and the tensioning motor 33 is located on the rear side of the main plate 102. Its output end is connected to the driving roller 31 through a coupling. The driven roller 32 is arranged adjacent to the driving roller 31 to form a strip clamping channel between them. The speed of the driving roller of the second tensioning mechanism 9 is greater than that of the driving roller of the first tensioning mechanism 3. Specifically, the speed is the linear velocity, i.e., the speed at which the strip is conveyed. In this way, both tensioning mechanisms can clamp the strip 11 and convey the strip 11 forward through the rotation of the driving roller 31. Since the driving roller of the second tensioning mechanism 9, which is closer to the receiving mechanism 10, rotates faster, the strip between the two tensioning mechanisms will be tensioned to ensure printing quality. Furthermore, the tension of the fabric strip is generated by the speed difference between the two drive rollers. Therefore, to meet the demands of high-speed printing, the speeds of the two drive rollers can be increased simultaneously while maintaining the speed difference between them. This improves printing efficiency while maintaining the fabric strip tension, i.e., ensuring print quality. Of course, the take-up speed of the take-up mechanism 10 also needs to be increased accordingly. It should also be noted that the fabric strip clamping channel does not completely clamp the fabric strip 11. When the tension of the fabric strip exceeds a certain value, it will slide against the two rollers, allowing the fabric strip to relax and thus maintaining the tension within a relatively stable range.

[0034] Specifically, since different types of fabric strips may differ in thickness, elasticity, and coefficient of friction with the roller, the same clamping force may not be sufficient to meet the tension requirements of different types of fabric strips. Therefore, this embodiment includes a clamping adjustment drive device 34 between the driven roller 32 and the main plate 102 to adjust the distance between the driven roller 32 and the driving roller 31. This device adjusts the appropriate clamping force for different types of fabric strips, thereby ensuring stable fabric tension and guaranteeing printing quality. The clamping adjustment drive device 34 can specifically be a slide cylinder.

[0035] In addition, in this embodiment, two tension stabilizing rollers 12 are provided between the first tensioning mechanism 3 and the first inkjet printing mechanism 4. When the two tensioning mechanisms can meet the requirements for stable tension of the fabric strip, the fabric strip 11 passes directly under the two tension stabilizing rollers 12; while when the two tensioning mechanisms can meet the requirements for stable tension of the fabric strip, for example for some highly elastic fabrics, the fabric strip 11 can be pressed as follows: Figure 3 The path shown bypasses between the two tension stabilizing rollers 12. Specifically, the fabric strip 11 first passes over the upstream tension stabilizing roller, then between the two rollers, and exits under the downstream tension stabilizing roller. This ensures proper fit between the fabric strip and the first inkjet printing mechanism 4. By bypassing the two tension stabilizing rollers, the fabric strip's transport resistance is increased, thereby ensuring the tension stability of the fabric strip between the tension stabilizing rollers and the second tensioning mechanism. This ensures the stability of the fabric strip's tension effect and guarantees print quality.

[0036] like Figure 4 As shown, both the first inkjet printing mechanism 4 and the second inkjet printing mechanism 7 include a front-to-back telescopic drive device 41, a printhead 42, and a pad 43. The front-to-back telescopic drive device 41 is installed through the main body plate 102 in the front-to-back direction. The printhead 42 is located at the output end of the front-to-back telescopic drive device 41, meaning the printhead 42 can extend and retract back and forth between the front and rear sides of the main body plate 102. This allows the printhead 42 to retract to the rear of the main body plate 102 when necessary for maintenance or upkeep, such as cleaning residual ink from the printhead to prevent contamination of the fabric strip or other components on the front side. The front-to-back telescopic device 41 can specifically be an electric slide. The pad 43 is located on the front side of the main body plate 102 and below the extended position of the printhead 42, providing stable support for the fabric strip and ensuring print quality.

[0037] To facilitate the removal of residual ink from the printhead, an ink collection box 44 is provided on the rear side of the main plate 102, below the retracted position of the printhead 42. A scraper 45 is located at the front end of the ink collection box 44. Thus, as the printhead 42 retracts into the rear of the main plate 102, its lower surface slides over the upper end of the scraper 45, scraping away any residual ink on the printhead 42, which is then collected by the ink collection box 44, eliminating the need for manual scraping. To avoid unnecessary contact between the scraper 45 and the printhead 42, a lifting drive device 46 is provided between the scraper 45 and the main plate 102. This device raises the scraper 45 only when necessary. The ink collection box 44 is connected to the scraper 45 and therefore rises and falls synchronously with it. The lifting drive device 46 can be a sliding cylinder.

[0038] like Figure 5 As shown, the doctor blade 45 includes a main body plate 451, a mounting block 452, and a doctor blade (not shown in the figure). The mounting block 452 is detachably connected to the main body plate 451 by bolts. The doctor blade is clamped between the main body plate 451 and the mounting block 452. In order to avoid damage to the print head 42, the doctor blade can be made of a flexible material such as rubber. The detachable structure of the doctor blade also facilitates disassembly, cleaning, or replacement of the doctor blade to ensure the doctor blade effect.

[0039] like Figure 1 As shown, to make the overall structure of the equipment more compact and reduce its size, a first fabric conveying path and a second fabric conveying path are formed upstream and downstream of the flipping roller 6, respectively. Both the first and second fabric conveying paths are inclined, forming an acute angle between them. The mechanisms on the two conveying paths can be staggered to make full use of space. At the same time, this design also shortens the overall conveying path length of the fabric strip 11, which is more conducive to ensuring the tension stability of the fabric strip. In addition, since the second tensioning mechanism 9 is relatively large, in order to avoid increasing the height of the equipment and to make full use of the space between the two conveying paths, a deflector roller 13 is set downstream of the second curing lamp 8 to ensure effective cooperation between the fabric strip 11 and the second curing lamp 8. The second tensioning mechanism 9 is set in the space between the two conveying paths. The fabric strip 11 passes through the deflector roller 13 and then through the second tensioning mechanism 9, and is finally wound up by the take-up mechanism 10.

[0040] Since loading and unloading operations often need to be performed simultaneously, the feeding mechanism 2 and the receiving mechanism 10 are located at the same end of the frame and are arranged adjacent to each other vertically to facilitate loading and unloading operations and make the overall structure more compact. In order to perform loading and unloading operations in a timely manner, both the feeding mechanism 2 and the receiving mechanism 10 are equipped with fabric monitoring sensors 14, such as capacitive proximity switches. When the thickness of the fabric roll changes, the distance between the fabric roll and the fabric monitoring sensor changes accordingly. When the distance exceeds or falls below a critical value, the sensor can generate a signal to remind the operator to replace the fabric roll in time.

[0041] The above are merely preferred embodiments of this utility model, and are implementations based on the overall concept of this utility model. Furthermore, the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A double-sided wash label inkjet printer, characterized in that, It includes a frame and a feeding mechanism, a first tensioning mechanism, a first inkjet printing mechanism, a first curing lamp, a flipping roller, a second inkjet printing mechanism, a second curing lamp, a second tensioning mechanism, and a receiving mechanism, which are sequentially arranged on the frame. Both the first and second tensioning mechanisms include a drive roller, a driven roller, and a tensioning motor. The drive roller is located at the output end of the tensioning motor, and the driven roller is arranged adjacent to the drive roller to form a strip clamping channel between them. The speed of the drive roller in the second tensioning mechanism is greater than that of the drive roller in the first tensioning mechanism.

2. The double-sided water-wash label inkjet printer according to claim 1, characterized in that, A clamping adjustment drive device is provided between the driven roller and the frame for adjusting the distance between the driven roller and the driving roller.

3. A double-sided water-wash label inkjet printer according to claim 1, characterized in that, Both the first inkjet printing mechanism and the second inkjet printing mechanism include a front and rear telescopic drive device, a printhead, and a pad. The front and rear telescopic drive device is mounted on the frame, the printhead is located at the output end of the front and rear telescopic drive device, and the pad is located below the extended position of the printhead.

4. A double-sided water-wash label inkjet printer according to claim 3, characterized in that, The ink cartridge is located below the retracted position of the printhead, and a scraper is located at the front end of the ink cartridge.

5. A double-sided water-wash label inkjet printer according to claim 4, characterized in that, A lifting drive device is provided between the doctor blade and the frame.

6. A double-sided wash label inkjet printer according to claim 4, characterized in that, The doctor blade includes a main plate, a mounting block, and a doctor blade. The mounting block is detachably connected to the main plate, and the doctor blade is clamped between the main plate and the mounting block.

7. A double-sided water-wash label inkjet printer according to claim 1, characterized in that, Two tension stabilizing rollers are provided between the first tensioning mechanism and the first inkjet printing mechanism.

8. A double-sided water-wash label inkjet printer according to claim 1, characterized in that, The upper and lower reaches of the turning roller are respectively formed by a first fabric conveying path and a second fabric conveying path, both of which are inclined.

9. A double-sided water-wash label inkjet printer according to claim 1, characterized in that, Both the feeding mechanism and the receiving mechanism are equipped with fabric monitoring sensors.

10. A double-sided water-wash label inkjet printer according to claim 1, characterized in that, The feeding mechanism and the receiving mechanism are located at the same end of the frame.

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