Double-sided UV printer
By setting the inclined inkjet head and the material reversing roller facing each other in a double-sided UV printer, and combining the spacing adjustment unit, the problem of excessive stroke of the printing material is solved, and the effect of material saving and compact structure is achieved.
Patent Information
- Application Number
- CN202422319167.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-24
AI Technical Summary
In existing double-sided UV printers, the long stroke of the printing material leads to waste of materials and inconvenient supply of ink on the top of the nozzle, which affects the printing effect and is not compact enough.
The front printing inkjet head and the reverse printing inkjet head are arranged opposite to each other, and the inkjet head is inclined at 30-45° with the horizontal direction, and a material reversing roller is provided between the inkjet heads, and the spacing adjustment unit is combined to adjust the spacing between the clamp rollers to optimize the printing material path.
It reduces the waste of printing materials, ensures the normal operation of the nozzle, improves printing efficiency, compact structure, smooth material movement, and reduces the use of auxiliary rollers.
Smart Images
Figure CN223252600U_ABST
Abstract
Description
Technical Field
[0001] This utility model patent relates to the field of printer technology, and in particular to a double-sided UV printer. Background Art
[0002] Existing double-sided UV printers on the market feature a horizontally staggered print platform arrangement, such as one positioned vertically. The printing material is placed on a feed roller on one side of the housing. It then passes through two material guide rollers, a front-side printing clamping roller, and a front-side active rubber roller to enter the space between the front-side printing water-cooling platform and the front-side printing inkjet head (part of the front-side printing inkjet head unit) for front-side printing. The front-side printing inkjet head then enters the space between the reverse-side printing water-cooling platform and the reverse-side printing inkjet head (part of the reverse-side printing inkjet head unit) for reverse-side printing. The reverse-side printing inkjet head then passes through the reverse-side printing active rubber roller, the reverse-side printing clamping roller, and two material guide rollers before being wound onto a take-up roller on the other side of the housing. Due to its inherent structural limitations, this arrangement requires auxiliary rollers between the front-side and reverse-side printing inkjet heads, and between the reverse-side printing inkjet head and the reverse-side active rubber roller to adjust the material's path through large angles. This results in a longer material travel distance during the initial delivery, resulting in a longer length of material after the reverse-side printing inkjet head, resulting in wasted material.
[0003] In order to solve the above technical problems, some technicians have proposed to arrange the front printing inkjet head and the back printing inkjet head vertically left and right. In this way, although the length of the printed material after the back printing inkjet head is shortened, the printing material travel is still relatively long. At the same time, this vertical arrangement of the printing inkjet head is not conducive to the ink supply at the top of the nozzle, affecting the printing effect. The entire printer is also relatively long, relatively large, and not compact enough.
[0004] How to ensure the normal operation of the print head while reducing the waste of printing materials is a technical problem that needs to be solved urgently. Utility Model Content
[0005] The utility model provides a double-sided UV printer to solve the above-mentioned technical problems.
[0006] A double-sided UV printer comprises a housing, a front-side printing inkjet head unit arranged in the housing, a front-side printing inkjet head on the front-side printing inkjet head unit, a front-side printing water-cooling platform arranged parallel to the front-side printing inkjet head, a back-side printing inkjet head unit arranged in the housing, a back-side printing inkjet head on the back-side printing inkjet head unit, and a back-side printing water-cooling platform arranged parallel to the back-side printing inkjet head, wherein the back-side printing inkjet head unit is arranged opposite to the front-side printing inkjet head unit and is located to the lower right of the front-side printing inkjet head unit, the upper end of the front-side printing inkjet head is tilted to the right and the front-side printing inkjet head forms an angle of 30-45 degrees with the horizontal direction, and the upper end of the back-side printing inkjet head is tilted to the left and the back-side printing inkjet head forms an angle of 30-45 degrees with the horizontal direction.
[0007] Preferably, a material reversing roller is provided between the lower end of the front-side printing inkjet head and the upper end of the reverse-side printing inkjet head.
[0008] Preferably, a front printing active rubber roller is provided on the upper right side of the front printing water cooling platform, a front printing clamping rubber roller is provided on the lower right side of the front printing active rubber roller, and the front printing clamping rubber roller is connected to the first spacing adjustment unit.
[0009] Preferably, the first spacing adjustment unit includes a first fixed seat arranged obliquely along the lower right side, a first power push rod located at the lower right side of the first fixed seat, and a first sleeve. The first fixed seat is provided with a track facing the front printing active rubber roller, the axis of the first sleeve is parallel to the axis of the front printing active rubber roller, the first sleeve has a guide groove that cooperates with the track guide, the first sleeve is rotatably connected to the front printing clamping rubber roller through a bearing, and the outer peripheral surface of the first sleeve is fixedly connected to the output end of the first power push rod.
[0010] Preferably, a reverse printing active rubber roller is provided at the lower left of the reverse printing water cooling platform, a front printing clamping rubber roller is provided at the lower left of the reverse printing active rubber roller, and the reverse printing clamping rubber roller is connected to the second spacing adjustment unit.
[0011] Preferably, the second spacing adjustment unit includes a second fixed seat arranged obliquely along the lower left side, a second power push rod located at the lower left side of the second fixed seat, and a second sleeve. The second fixed seat is provided with a track facing the reverse printing active rubber roller, the axis of the second sleeve is parallel to the axis of the reverse printing active rubber roller, the second sleeve has a guide groove that cooperates with the track guide, the second sleeve and the reverse printing clamping rubber roller are rotatably connected through a bearing, and the outer peripheral surface of the second sleeve is fixedly connected to the output end of the second power push rod.
[0012] Preferably, the upper end of the front printing inkjet head is tilted to the right and forms an angle of 40° with the horizontal direction, and the upper end of the back printing inkjet head is tilted to the left and forms an angle of 40° with the horizontal direction.
[0013] The utility model discloses a double-sided UV printer. The reverse printing inkjet head unit is arranged opposite to the front printing inkjet head unit and the reverse printing inkjet head unit is located to the lower right of the front printing inkjet head unit. The upper end of the front printing inkjet head is tilted to the right and the front printing inkjet head forms an angle of 30-45 degrees with the horizontal direction. The upper end of the reverse printing inkjet head is tilted to the left and the reverse printing inkjet head forms an angle of 30-45 degrees with the horizontal direction. The reverse printing inkjet head is located below the front printing inkjet head. After testing, it was found that the front and reverse printing inkjet heads work normally within this angle range. At the same time, the front printing inkjet head and the back printing inkjet head are close to each other with a large angle, and the printing material can easily pass between the front printing inkjet head and the back printing inkjet head. The printing material directly enters the front printing inkjet head obliquely from the front printing active rubber roller, and enters the back printing inkjet head position nearby for printing after the front side is printed. After printing is completed, the printing material goes down and around the back printing active rubber roller for output. The whole device has a compact structure, and there is no need to set auxiliary rollers between the front and back printing inkjet heads and between the back printing inkjet head and the back printing active rubber roller, which greatly increases the distance of the printing material, thereby saving printing material.
[0014] Furthermore, a material reversing roller is provided between the lower end of the front printing inkjet head and the upper end of the reverse printing inkjet head, which can slightly adjust the angle at which the printing material is led out from the lower end of the front printing inkjet head and enters from the upper end of the reverse printing inkjet head without significantly increasing the stroke, thereby making the transition of the printing material between the front printing inkjet head and the reverse printing inkjet head more natural and smooth.
[0015] Furthermore, the front-side printing clamping roller is connected to a first spacing adjustment unit, while the back-side printing clamping roller is connected to a second spacing adjustment unit. This allows the spacing between the front and back printing clamping rollers and the corresponding front and back printing active rollers to be adjusted according to the thickness and tightness of the printing material, ensuring optimal movement of the material through friction. The structure of the first and second spacing adjustment units is also very ingenious and compact. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the double-sided UV printer of the utility model.
[0017] Among them: 1. Unwinding roller; 2. Material guide roller; 3. Front printing clamping rubber roller; 4. First power push rod; 5. Front printing active rubber roller; 6. Front printing water-cooling platform; 7. Front printing inkjet head; 7'. Front printing inkjet head unit; 8. Material reversing roller; 9. Back printing water-cooling platform; 10. Back printing inkjet head; 10'. Back printing inkjet head unit; 11. Back printing active rubber roller; 12. Back printing clamping rubber roller; 13. First spacing adjustment unit; 13'. Second spacing adjustment unit; 14. Material receiving roller; 15. First fixed seat; 16. Shell. DETAILED DESCRIPTION
[0018] An embodiment of a double-sided UV printer, such as Figure 1 As shown, it includes a housing 16, a material discharge roller 1 fixed to the upper right side of the housing, two material guide rollers 2 arranged at the upper left side of the housing, a front printing material clamping rubber roller 3, a front printing active rubber roller 5, a front printing inkjet head unit 7' arranged in the housing, a front printing inkjet head 7 on the front printing inkjet head unit, a front printing water-cooling platform 6 arranged in parallel with the front printing inkjet head, a back printing inkjet head unit arranged in the housing, a back printing inkjet head 10 on the back printing inkjet head unit, and a back printing water-cooling platform arranged in parallel with the back printing inkjet head. 9. Reverse printing active rubber roller 11, reverse printing material clamping rubber roller 12, two material guide rollers 2, and a material receiving roller 14 fixed to the lower left side of the housing; the reverse printing inkjet head unit 7' is arranged opposite the front printing inkjet head unit 10', and the reverse printing inkjet head unit is located to the lower right of the front printing inkjet head unit. The upper end of the front printing inkjet head is tilted to the right and forms an angle of 30-45° with the horizontal direction. The upper end of the reverse printing inkjet head is tilted to the left and forms an angle of 30-45° with the horizontal direction. Specifically, in this embodiment, the upper end of the front printing inkjet head is tilted to the right and forms an angle of 40° with the horizontal direction, and the upper end of the reverse printing inkjet head is tilted to the left and forms an angle of 40° with the horizontal direction. A material reversing roller 8 is disposed between the lower end of the front printing inkjet head and the upper end of the reverse printing inkjet head. Without significantly increasing the stroke, the reversing roller 8 can slightly adjust the angle at which the printing material is led out from the lower end of the front printing inkjet head and enters from the upper end of the back printing inkjet head, so that the transition of the printing material between the front printing inkjet head and the back printing inkjet head is more natural and smooth.
[0019] The front printing active rubber roller is located to the upper right of the front printing water-cooling platform, while the front printing clamping rubber roller is located to the lower right of the front printing active rubber roller. The front printing clamping rubber roller is connected to a first spacing adjustment unit 13. The first spacing adjustment unit comprises a first fixed seat 15 arranged diagonally along the lower right side, a first power push rod 4 located to the lower right of the first fixed seat, and a first sleeve (not shown). The first fixed seat is provided with a track (not shown) facing the front printing active rubber roller. The axis of the first sleeve is parallel to the axis of the front printing active rubber roller. The first sleeve has a guide groove (not shown) that cooperates with the track. The first sleeve is rotatably connected to the front printing clamping rubber roller via a bearing. The outer circumference of the first sleeve is fixedly connected to the output end of the first power push rod. The first power push rod can be an electric push rod, a hydraulic push rod, or a pneumatic push rod as known in the art. This embodiment uses a pneumatic push rod controlled by a solenoid valve.
[0020] A reverse printing active rubber roller is provided at the lower left of the reverse printing water-cooling platform. A front printing clamping rubber roller is provided below and to the left of the reverse printing active rubber roller. The reverse printing clamping rubber roller is connected to a second spacing adjustment unit 13'. The second spacing adjustment unit includes a second fixed seat arranged diagonally along the lower left side, a second power push rod located below and to the left of the second fixed seat, and a second sleeve. The second fixed seat is provided with a track facing the reverse printing active rubber roller. The axis of the second sleeve is parallel to the axis of the reverse printing active rubber roller. The second sleeve has a guide groove that cooperates with the track guide. The second sleeve is rotatably connected to the reverse printing clamping rubber roller via a bearing. The outer circumference of the second sleeve is fixedly connected to the output end of the second power push rod. The second power push rod can be an electric push rod, a hydraulic push rod, or a pneumatic push rod as known in the art. This embodiment uses a pneumatic push rod controlled by a solenoid valve.
[0021] In a double-sided UV printer according to this embodiment, the upper end of the front-side printing inkjet head is tilted to the right and forms an angle of 30-45 degrees with the horizontal direction. The upper end of the back-side printing inkjet head is tilted to the left and forms an angle of 30-45 degrees with the horizontal direction. The back-side printing inkjet head is located below the front-side printing inkjet head. Tests have shown that the front and back-side printing inkjet heads operate normally within this angle range. At the same time, the front-side printing inkjet head and the back-side printing inkjet head are close to each other and have a large angle, so the printed material easily passes between the front-side printing inkjet head and the back-side printing inkjet head. The printed material enters the front-side printing inkjet head directly at an angle from the front-side printing active rubber roller. After printing on the front side, it enters the nearest back-side printing inkjet head position for printing. After printing is completed, the printed material flows downward and around the back-side printing active rubber roller for output. The entire device has a compact structure and does not require auxiliary rollers between the front-side and back-side printing inkjet heads or between the back-side printing inkjet head and the back-side printing active rubber roller, which greatly increases the distance traveled by the printed material. This saves printing material. The front-side printing clamping roller is connected to the first spacing adjustment unit, while the back-side printing clamping roller is connected to the second spacing adjustment unit. The spacing between the front and back printing clamping rollers and the corresponding front and back printing active rollers can be adjusted according to the thickness and tightness of the printing material, ensuring optimal movement of the material through friction. The structure of the first and second spacing adjustment units is very ingenious and compact.
[0022] In other embodiments, different from the above embodiments, the upper end of the front printing inkjet head is tilted to the right and the front printing inkjet head can also form an angle of 30° or 45° with the horizontal direction, and the upper end of the back printing inkjet head is tilted to the left and the back printing inkjet head can also form an angle of 30° or 45° with the horizontal direction.
Claims
1. A double-sided UV printer, characterized by: It includes a shell, a front-side printing inkjet head unit arranged in the shell, a front-side printing inkjet head on the front-side printing inkjet head unit, a front-side printing water-cooling platform arranged parallel to the front-side printing inkjet head, a reverse-side printing inkjet head unit arranged in the shell, a reverse-side printing inkjet head on the reverse-side printing inkjet head unit, and a reverse-side printing water-cooling platform arranged parallel to the reverse-side printing inkjet head, the reverse-side printing inkjet head unit is arranged opposite to the front-side printing inkjet head unit and the reverse-side printing inkjet head unit is located to the lower right of the front-side printing inkjet head unit, the upper end of the front-side printing inkjet head is tilted to the right and the front-side printing inkjet head is at an angle of 30-45° to the horizontal direction, and the upper end of the reverse-side printing inkjet head is tilted to the left and the reverse-side printing inkjet head is at an angle of 30-45° to the horizontal direction.
2. The double-sided UV printer according to claim 1, characterized in that: A material reversing roller is provided between the lower end of the front-side printing inkjet head and the upper end of the reverse-side printing inkjet head.
3. The double-sided UV printer according to claim 1, characterized in that: A front printing active rubber roller is provided on the upper right side of the front printing water cooling platform, a front printing clamping rubber roller is provided on the lower right side of the front printing active rubber roller, and the front printing clamping rubber roller is connected to the first spacing adjustment unit.
4. The double-sided UV printer according to claim 1, characterized in that: The first spacing adjustment unit includes a first fixed seat arranged obliquely along the lower right side, a first power push rod located at the lower right side of the first fixed seat, and a first sleeve. The first fixed seat is provided with a track facing the front printing active rubber roller. The axis of the first sleeve is parallel to the axis of the front printing active rubber roller. The first sleeve has a guide groove that cooperates with the track guide. The first sleeve is rotatably connected to the front printing clamping rubber roller through a bearing. The outer peripheral surface of the first sleeve is fixedly connected to the output end of the first power push rod.
5. The double-sided UV printer according to any one of claims 1 to 4, characterized in that: A reverse printing active rubber roller is provided at the lower left of the reverse printing water cooling platform, a front printing clamping rubber roller is provided at the lower left of the reverse printing active rubber roller, and the reverse printing clamping rubber roller is connected to the second spacing adjustment unit.
6. The double-sided UV printer according to claim 5, characterized in that: The second spacing adjustment unit includes a second fixed seat arranged obliquely along the lower left side, a second power push rod located at the lower left side of the second fixed seat, and a second sleeve. The second fixed seat is provided with a track facing the reverse printing active rubber roller. The axis of the second sleeve is parallel to the axis of the reverse printing active rubber roller. The second sleeve is provided with a guide groove that cooperates with the track guide. The second sleeve is rotatably connected to the reverse printing clamping rubber roller through a bearing. The outer peripheral surface of the second sleeve is fixedly connected to the output end of the second power push rod.
7. The double-sided UV printer according to claim 1, characterized in that: The upper end of the front printing inkjet head is tilted to the right and forms an angle of 40° with the horizontal direction. The upper end of the back printing inkjet head is tilted to the left and forms an angle of 40° with the horizontal direction.