Cloth feeding mechanism and digital printing equipment
By introducing a fabric feeding mechanism into digital printing equipment, the contact area between the printing medium and the roller and the paper path travel are increased, solving the problem of small contact area in the existing technology. This enables cooling, heating and buffering within a limited space, expanding the application scenarios.
Patent Information
- Application Number
- CN202520154473.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-23
AI Technical Summary
In existing digital printing equipment, the small contact area between the printing medium and the rollers makes it impossible to provide favorable conditions for cooling, heating, or buffering within a limited space, thus limiting the application scenarios.
Introducing a fabric feeding mechanism into digital printing equipment, by setting a first roller and a second roller, ensures that the wrap angle of the printing medium is greater than or equal to 180°, increasing the contact arc length. A guide roller is set at the downstream end of the first roller to ensure that the wrap angle of the printing medium is maintained above 180°, thereby increasing the contact area and paper path travel.
Increasing the contact area between the printing medium and the roller within a limited space provides cooling or heating conditions, extends the paper path travel, meets production needs, improves printing quality and buffer space, and has a wide range of applications.
Smart Images
Figure CN223631258U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to digital printing field, especially relate to a cloth walking mechanism and digital printing equipment. BACKGROUND
[0002] In the digital printing equipment, the printing medium is arranged in the equipment to form a paper path with a preset tension, in order to ensure that the paper path can follow the set route, a plurality of roller members for transmission and / or guiding are also arranged in the digital printing equipment, and the printing medium only needs to produce contact when contacting the corresponding roller member, the contact area between the printing medium and the roller member is small in this winding mode, and when the digital printing equipment prints at high speed, the printing medium is also transported at high speed, which results in that it is impossible to extend the paper path of the printing medium in the limited space to provide corresponding buffer space in actual production or add corresponding cooling or heating conditions to the equipment, thereby limiting the application scenarios. UTILITY MODEL CONTENTS
[0003] The paper walking mechanism provided by the utility model aims to solve the problem that the contact area between the printing medium and the roller member is small in the prior art, thereby making it impossible to provide corresponding cooling, heating or buffer space and other favorable conditions in actual production.
[0004] The utility model is implemented in the following manner, a cloth walking mechanism is applied to a digital printing equipment, and comprises:
[0005] A first roller is used for winding the printing medium, and the wrapping angle of the printing medium on the first roller is greater than or equal to 180 degrees;
[0006] A second roller is arranged at the downstream end of the first roller and the second guide roller and is used for winding the printing medium, so that the wrapping angle of the printing medium on the first roller is kept greater than or equal to 180 degrees.
[0007] Further, the cloth walking mechanism further comprises:
[0008] A first guide roller is arranged opposite to the first roller and abuts against the first roller, the printing medium is arranged between the first roller and the second guide roller and is pulled when the first roller rotates;
[0009] A driving member drives the first roller to rotate to provide pulling power for the printing medium.
[0010] Further, the wrapping angle of the printing medium on the second roller is greater than or equal to 180 degrees, the cloth walking mechanism further comprises a second guide roller, the second guide roller is arranged at the downstream end of the second roller and is used for winding the printing medium, and the second guide roller is used to keep the wrapping angle of the printing medium on the second roller greater than or equal to 180 degrees and turn to the next process.
[0011] Further, the first roller is a cooling roller, and the fabric guiding mechanism is arranged at an output end of a drying device of the digital printing equipment, and the first roller cools the printing medium wound thereon.
[0012] Further, when the wrapping angle of the printing medium wound on the second roller is greater than or equal to 180°, the second roller is a cooling roller, and the cooling roller cools the printing medium wound thereon.
[0013] Further, the first roller is a heating roller, and the fabric guiding mechanism is arranged at an output end of a printing platform of the digital printing equipment, and the first roller heats the printing medium.
[0014] Further, when the wrapping angle of the printing medium wound on the second roller is greater than or equal to 180°, the second roller is a heating roller, and the heating roller heats the printing medium wound thereon.
[0015] Further, when the wrapping angle of the printing medium wound on the second roller is greater than or equal to 180°, the second roller is a cooling roller, and the cooling roller cools the printing medium heated by the first roller.
[0016] Further, when the wrapping angle of the printing medium wound on the second roller is greater than or equal to 180°, the second roller is provided in plurality, and the second roller close to the first roller among the plurality of second rollers is a heating roller, and the rest of the second rollers are cooling rollers.
[0017] The utility model also provides a digital printing equipment, including printing platform, drying device and preceding fabric guiding mechanism, the fabric guiding mechanism is arranged at the output end of printing platform or is arranged at the output end of drying device.
[0018] The utility model reaches the beneficial effect that through setting the wrapping angle of the printing medium on the first roller greater than or equal to 180 degrees, the contact arc length of the printing medium on the first roller is increased, and the second roller is arranged at the downstream end of the first roller, so that the wrapping angle of the printing medium wound on the first roller is always kept greater than or equal to 180 degrees, so that the arc surface length of the printing medium contacting the first roller can be increased in limited space, and the paper path travel of the printing medium can be also prolonged. Not only the contact area of the printing medium and the first roller can be increased to provide the favorable condition of cooling or heating the printing medium after printing, but also the paper path travel can be prolonged to provide the buffer space for the printing medium running, and the application scenarios are wide. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 It is the perspective view of the digital printing equipment provided by the utility model;
[0020] Fig. 2is another view of the digital printing equipment provided by the utility model.
[0021] Explanation of reference numerals:
[0022] 1, first roller; 2, first guide roller; 3, driving member; 4, second roller; 5, second guide roller; 100, printing medium; 200, printing platform; 300, drying device; 400, cloth running mechanism. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the utility model is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0024] Referring to Figs. 1-2 The utility model embodiment provides a cloth running mechanism, be applied to digital printing equipment, including first roller 1 and second roller 4. Wherein, first roller 1 is used to supply printing medium 100 and is arranged, and the wrap angle of printing medium 100 on first roller 1 is greater than or equal to 180 °, and second roller 4 is arranged at the downstream end of first roller 1 and second guide roller 5 and is supplied for printing medium 100 and is arranged to keep the wrap angle of printing medium 100 on first roller 1 at greater than or equal to 180 °, and the wrap angle is at least 180 °, can guarantee that the area of first roller 1 and printing medium 100 contact is large enough to meet the production demand.
[0025] By setting the wrap angle of printing medium 100 on first roller to be greater than or equal to 180 degrees, the contact arc length of printing medium 100 on first roller 1 is increased, and second roller 4 is arranged at the downstream end of first roller 1, so that the wrap angle of printing medium 100 arranged on first roller 1 is always kept greater than or equal to 180 °. In this way, in the limited space, not only the arc length of printing medium 100 contacting first roller 1 can be increased, but also the printing medium 100 can be cooled or heated directly by first roller 1, or a cooling or heating structure can be arranged to heat or cool the printing medium arranged on first roller 1, thereby providing favorable conditions for heating or cooling the printing medium 100 after printing, and the paper path travel of the printing medium 100 can be extended to provide corresponding buffer space in actual production.
[0026] The cloth running mechanism provided by the utility model not only can increase the contact area of printing medium 100 and first roller 1 to provide favorable conditions for cooling or heating the printing medium 100 after printing, but also can extend the paper path travel to provide buffer space for the running printing medium 100, and has wide application scenarios.
[0027] In the embodiment, the first roller 1 can be set as one, two, three, and so on according to actual needs, which is not limited here.
[0028] Further, the paper feeding mechanism further comprises a first guide roller 2 and a driving member 3. The first guide roller 2 is arranged opposite to the first roller 1 and abuts against the first roller 1. The first roller 1 and the first guide roller 2 are provided for the printing medium 100 to pass through and to pull the printing medium 100 when the first roller 1 rotates. The driving member 3 drives the first roller 1 to rotate to provide pulling power to the printing medium 100. The first guide roller 2 and the first roller 1 abut against each other, and the driving member 3 drives the first roller 1 to rotate, so that the printing medium 100 around the first roller 1 generates pulling force. In practical applications, the printing medium 100 in the previous process before the paper feeding mechanism 400 can be provided with tension to meet the tension requirement of the printing medium 100 during printing, so that the printing medium can always maintain a preset tension during printing, thereby improving the printing effect.
[0029] In the embodiment, when the first roller 1 is set as two or more, the first guide roller 2 is arranged opposite to the first roller 1 on the paper path.
[0030] Further, the wrapping angle of the printing medium 100 on the second roller 4 is greater than or equal to 180°. The paper feeding mechanism 400 further comprises a second guide roller 5. The second guide roller 5 is arranged at the downstream end of the second roller 4 and makes the printing medium 100 wrap around. The second guide roller 5 is used to keep the wrapping angle of the printing medium 100 around the second roller 4 on the second roller 4 at greater than or equal to 180° and divert to the next process. By adding the second guide roller 5, the second roller 4 can be used to wrap the printing medium 100 to increase the wrapping angle of the printing medium 100. The total contact arc length and total path travel of the printing medium 100 on the paper feeding mechanism with the first roller 1 and the second roller 2 can be further increased, which can effectively compensate for the deficiency of increasing the wrapping angle of the printing medium 100 only by using the first roller 1, so that the paper feeding mechanism 400 can adapt to more different production and processing requirements.
[0031] Further, the first roller 1 is a cooling roller, and the walking mechanism is arranged at the output end of the drying device 300 of the digital printing equipment, that is, the first roller 1 and the first guide roller 2 and the second roller 4 are sequentially arranged along the paper path at the output end of the drying device 300, and the first roller 1 cools the wrapped printing medium 100. In this embodiment, since the ink adheres to the printing medium 100 when the inkjet printing is performed on the printing medium 100, the ink penetrates the printing medium 100, and the penetration degree of different types of ink is different. For example, the water-based ink has a high water content, and after penetrating the printing medium 100, the printing medium 100 is obviously wrinkled. When the position covered by the ink on the printing medium 100 is dried, wrinkles different from the position not attached by the ink drop are generated. The walking mechanism 400 is arranged at the output end of the drying device 300, and the first roller 1 cools and condenses the dried printing medium 100, which is beneficial to the recovery of the printing medium 100, that is, the printing medium 100 is more flat, thereby improving the printing effect.
[0032] In addition, when the wrap angle of the printing medium 100 wrapped around the second roller 4 is greater than or equal to 180°, after the printing medium 100 passes through the first roller 1 for cooling and condensation, the second roller 4 can also cool the printing medium 100 after the cooling and condensation of the first roller 1 due to the extension of the paper path of the printing medium 100 and the increase of the contact area with the second roller 4. Such a configuration can use the second roller 4 to assist the first roller 1 to fully cool the printing medium 100. By using this scheme, the temperature required for the first roller 1 to cool the printing medium 100 can be reduced, thereby saving the cooling source energy of the first roller 1, that is, the temperature of the first roller 1 does not need to be set too low.
[0033] Further, when the wrap angle of the printing medium 100 on the second roller 4 is also greater than or equal to 180°, the second roller 4 can also be a cooling roller, and the second roller 4 is used to cool the wrapped printing medium 100. In this way, after the first roller 1 cools the printing medium 100 once, the second roller 4 can also cool the printing medium 100 twice. The second roller 4 is also a cooling roller, which can improve the effect of the second cooling of the printing medium 100.
[0034] According to the above embodiment, it can be understood that when the second roller 4 has a wrap angle greater than or equal to 180°, whether the second roller 4 is set as a cooling roller can be selected according to the actual production requirements, such as the different types of printing media and the different cooling conditions required by the different types of printing media, so as to increase the condensation effect.
[0035] It should be noted that the second roller 4 can be provided as 1, 2, 3, …, so that the printing medium 100 can be cooled multiple times, so as to achieve better cooling effect according to actual production needs. In addition, in addition to setting different numbers of the second roller 4 to achieve different cooling effects, the size of the first roller 1 and the second roller 4 can also be set to adjust the contact area of the printing medium 100 with the first roller 1 and the second roller 4 and the paper path stroke, thereby adjusting the cooling effect of the printing medium 100.
[0036] Further, in addition to being used for condensing and cooling the printing medium 100, the cloth feeding mechanism can also be used for heating and warming the printing medium 100. Specifically, the first roller 1 can be provided as a heating roller, and at this time the cloth feeding mechanism 400 can be arranged at the output end of the printing platform 200 of the digital printing equipment (not shown in the structure diagram). The first roller 1 heats the printing medium 100, so that the cloth feeding mechanism 400 can directly replace the traditional drying device 300 to dry and color the printing medium 100 after printing. Compared with the traditional drying device with a fixed cavity structure, the cloth feeding mechanism can flexibly adjust the structure and has a wider application range.
[0037] Further, when the wrap angle of the printing medium 100 around the second roller 4 is greater than or equal to 180°, the second roller 4 is also provided as a heating roller to heat the wrapped printing medium 100. In this way, the second roller 4 and the first roller 1 simultaneously heat the printing medium 100, which can increase the baking time of the printing medium 100 and thus achieve the required drying requirements. In this embodiment, the number of the second roller 4 can be set as 1, 2, 3, …, which can be set according to actual drying needs.
[0038] Further, when the wrap angle of the printing medium 100 around the second roller 4 is greater than or equal to 180°, the second roller 4 can also be provided as a cooling roller to condense and cool the printing medium 100 heated by the first roller 1. In this way, after the first roller 1 dries and colors the printing medium 100, the second roller 4 condenses and cools the dried printing medium 100. The cloth feeding mechanism 400 not only dries and colors the printing medium 100, but also condenses the printing medium 100 after drying, which can also improve the printing effect of digital printing. In this embodiment, when the first roller 1 and the second roller 4 are respectively provided as 1, the size of the first roller 1 and the second roller 4 can be increased, and the wrap angle on the corresponding roller can also be increased, so as to increase the contact arc of the printing medium 100 on the first roller 1 and the second roller 4, thereby increasing the drying and condensing effect.
[0039] Further, when the wrap angle of the printing medium 100 around the second roller 4 is greater than or equal to 180°, the second roller 4 can also be provided in multiple, and the part of the second roller 4 close to the first roller 1 is a heating roller, and the rest of the second roller 4 is a cooling roller. In this way, the part of the second roller 4 together with the first roller 1 can heat and dry the printing medium 100, and then the rest of the second roller 4 can condense the dried printing medium 100. By using this scheme, it can be ensured that the printing medium 100 can be sufficiently dried and condensed, and accordingly, the first roller 1 and the second roller 4 can be provided smaller in size, which is also conducive to disassembly and assembly of the structure.
[0040] In the above embodiment, the wrap angle of the printing medium on the first roller and the second roller is greater than or equal to 180°, which can make the surface area of the printing medium 100 in contact with the first roller 1 and the second roller 4 at least half, so that the first roller 1 and the second roller 4 can be effectively used for cooling or heating. Specifically, the wrap angle can be greater than or equal to 180 degrees and less than 360 degrees, so as to avoid that the wrap angle is too large to cause the printing medium 100 to overlap and interfere with the running of the printing medium 100. The specific angle can be set according to the actual available space and production requirements, for example, 180°, 200°, 250°, 270°, and the like, which are not limited herein.
[0041] In the embodiment, the cooling roller and the heating roller used above both belong to existing products, and the structure of the cooling roller and the heating roller will not be described in detail herein. Instead, the first roller 1 and the second roller 4 are directly used as the heating or condensing structure, without the need to additionally provide a heating or condensing device, thereby simplifying the structure and saving the cost.
[0042] The utility model embodiment further provides a digital printing equipment, including printing platform 200, drying device 300 and preceding walk cloth mechanism 400, walk cloth mechanism 400 is located at the output of printing platform 200 or is located at the output of drying device 300.
[0043] The digital printing equipment provided by the utility model not only can increase the contact area of the printing medium 100 and the first roller 1 to provide cooling or heating conditions for the printing medium 100 after printing, but also can prolong the paper path to provide a buffer space for the running of the printing medium 100.
[0044] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A thread feeding mechanism applied in a digital printing device, characterized in that, The application relates to a fabric guiding mechanism for a digital printing device, comprising: a first roller for winding a printing medium, the winding angle of the printing medium on the first roller being greater than or equal to 180 degrees; a second roller arranged at the downstream end of the first roller and winding the printing medium so that the winding angle of the printing medium on the first roller is kept greater than or equal to 180 degrees.
2. The cloth transfer mechanism according to claim 1, wherein The fabric guiding mechanism further comprises: a first guide roller arranged opposite to the first roller and abutting against the first roller, the printing medium being wound between the first roller and the second guide roller and being pulled by the first roller when the first roller rotates; a driving member driving the first roller to rotate to provide pulling power to the printing medium.
3. The cloth transfer mechanism according to claim 1, wherein The winding angle of the printing medium on the second roller is greater than or equal to 180 degrees, and the fabric guiding mechanism further comprises a second guide roller arranged at the downstream end of the second roller and winding the printing medium, the second guide roller being used to keep the winding angle of the printing medium on the second roller greater than or equal to 180 degrees and to transfer the printing medium to the next process.
4. A beam spreading mechanism according to any one of claims 1 to 3, wherein The first roller is a cooling roller, and the fabric guiding mechanism is arranged at the output end of a drying device of the digital printing device, and the first roller cools the winding printing medium.
5. The cloth transfer mechanism according to claim 4, wherein When the winding angle of the printing medium on the second roller is greater than or equal to 180 degrees, the second roller is a cooling roller to cool the winding printing medium.
6. A beam spreading mechanism according to any one of claims 1 to 3 wherein, The first roller is a heating roller, and the fabric guiding mechanism is arranged at the output end of a printing platform of the digital printing device, and the first roller heats the printing medium.
7. The cloth transfer mechanism according to claim 6, wherein When the winding angle of the printing medium on the second roller is greater than or equal to 180 degrees, the second roller is a heating roller to heat the winding printing medium.
8. The cloth transfer mechanism of claim 6 wherein, When the winding angle of the printing medium on the second roller is greater than or equal to 180 degrees, the second roller is a cooling roller to cool the printing medium heated by the first roller.
9. The cloth transfer mechanism of claim 6 wherein, When the winding angle of the printing medium on the second roller is greater than or equal to 180 degrees, a plurality of second rollers are arranged, and the second rollers close to the first roller are heating rollers, and the rest of the second rollers are cooling rollers.
10. A digital printing apparatus characterized by comprising: The application further relates to a digital printing device comprising a printing platform, a drying device and the fabric guiding mechanism according to any one of claims 1-9, the fabric guiding mechanism being arranged at the output end of the printing platform or the output end of the drying device.