Pre-coating device for saving ink

Abstract

The utility model belongs to the field of pre-coating devices for saving printing ink, which comprises a support and a primary dyeing device arranged above the support, the primary dyeing device is used for primarily dyeing and coating paper, and a material containing device is arranged below the primary dyeing device and used for containing dye and conveying the dye to the primary dyeing device, so that the paper is dyed. According to the pre-coating device, the paper is pre-coated with the low-cost printing ink, so that fibers and gaps on the paper are filled with the low-cost printing ink, the adsorption capacity of the paper is reduced, and therefore, the use amount of the functional printing ink can be greatly reduced when the functional printing ink on the surface of the paper is printed and coated in the later period. Meanwhile, the pre-dyeing and printing of the ground color are carried out, so that the coating thickness of the functional ink can be reduced, and the color and texture of the finished paper are not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper processing and manufacturing equipment field, especially for saving ink's pre -coating device. BACKGROUND

[0002] In the special paper processing and manufacturing process, the paper roll feeding mode is generally adopted for subsequent processing. In the subsequent processing process, an important step is to coat the paper with ink to meet the requirements of customers. However, the ink used for dyeing is of high value, especially for paper with special requirements (such as containing pearl powder, ultraviolet resistant powder, gold powder, etc.). Due to the large number of small voids and fiber characteristics of the paper itself, some even have intaglio printing, resulting in strong adsorption capacity, which causes a large amount of expensive ink to be adsorbed, thereby greatly increasing the consumption of ink and leading to cost increase. In this case, for special paper using high value ink, the cost will increase significantly. For example, in the prior art CN119305291A, the printing ink method will cause more waste.

[0003] At present, there is no good technical solution to solve this problem in the paper printing and dyeing industry.

[0004] In order to solve the above problems, a device needs to be designed, which can reduce the use of valuable ink materials while not sacrificing the printing and dyeing quality. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above defects, providing a kind of pre-coating device for saving ink, by one end rotation, the paper roll is replaced quickly and conveniently, to solve the problems existing in background art.

[0006] The utility model aims at solving the above defects, providing a kind of pre-coating device for saving ink, by one end rotation, the paper roll is replaced quickly and conveniently, to solve the problems existing in background art.

[0007] A kind of pre-coating device for saving ink, including support and setting initial dyeing device on the support, initial dyeing device is used to carry out preliminary dyeing and coating to paper, initial dyeing device is below and is provided with material holding device, for holding dye, and dye is transferred to initial dyeing device, to realize pre-coating to paper, form base color layer to reduce subsequent ink consumption.

[0008] Further, the initial dyeing device includes a transfer roller and a pressing roller, the transfer roller is used to dip dye in the material holding device, and the pressing roller is used to press the paper and drive the paper and the transfer roller to rotate synchronously, the transfer roller is arranged below the pressing roller, the paper passes between the two, and the pressing roller and the transfer roller rotate synchronously and apply extrusion force to the paper.

[0009] Further, pressure adjusting devices are arranged at both ends of the pressing roller, for adjusting the pressure and the distance and adapting to different transfer rollers.

[0010] Further, the material containing device comprises a material tray and a material sticking rod, the material tray is arranged directly below the primary dyeing device, and is used for placing the dye, and the material sticking rod is arranged in the material tray and can rotate freely, and is used for transferring the dye to the infection device.

[0011] Further, the material sticking rod is a light material with a density less than water, and floats above the dye.

[0012] Further, a first heating roller is arranged behind the primary dyeing device, and is used for drying the back of the paper with the dye.

[0013] Further, a second heating roller is further arranged above the first heating roller, and is used for drying the front of the paper with the dye.

[0014] The beneficial effects of the present application are as follows: through the pre-coating device, the paper is first pre-coated with low-cost ink, the fibers and gaps on the paper are filled with low-cost ink, the adsorption capacity of the paper is reduced, and the use amount of functional ink can be greatly reduced when printing and dyeing and coating the functional ink on the surface of the paper in the later period. At the same time, because the background color is pre-dyed and printed, the thickness of the functional ink coating can be reduced, and the color and texture of the finished paper are not affected. BRIEF DESCRIPTION OF DRAWINGS

[0015] ATTACHED Figure 1 It is a structure test schematic diagram of the present embodiment;

[0016] ATTACHED Figure 2 It is a structure schematic diagram of the material containing device;

[0017] In the figure, 1 is a support, 2 is a primary dyeing device, 201 is a transfer roller, 2011 is a rotating shaft, 2012 is a groove, 202 is a pressing roller, 203 is a scraper, 3 is a material containing device, 301 is a material tray, 302 is a material sticking rod, 303 is a guide groove, 4 is a first heating roller, 5 is a second heating roller, 6 is a first gear set, 7 is a second gear set, 8 is a third gear set, 9 is a first motor, 10 is a second motor, 11 is a third motor, and 12 is a paper. DETAILED DESCRIPTION

[0018] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0019] In order to facilitate understanding, the present application will be further described in detail in combination with specific implementation examples, but is not used to limit the present application.

[0020] Embodiment: A pre-coating device for saving ink, which is mainly used for pre-coating the paper 1 to be processed, so as to reduce the amount of subsequent functional ink in the production process, thereby reducing the production cost of the paper 1.

[0021] A material container 3 is arranged below the device, which is used to place the single-color ink for preliminary coating of the paper 1. The material container 3 is composed of a material tray 301 and a material stick 302. The ink is placed in the material tray 301, and the material stick 302 is made of light material (such as air bag or EVA foam) and floats on the surface of the ink. The material stick 302 has a cylindrical structure, and its width is consistent with the width of the transfer roller 201. The two ends of the material stick 302 are in the form of shafts. A guide groove 303 extending in the vertical direction is arranged on the side of the material tray 301 close to the transfer roller 201, and the shafts at the two ends of the material stick 302 pass through the guide groove 303. Because the material stick 302 is made of light material and floats on the surface of the ink, in order to transfer the ink to the transfer roller 201, the material stick 302 needs to be in contact with the transfer roller 201 continuously. In order to prevent it from moving uncontrollably and separating from the transfer roller 201, a guide groove 303 is specially arranged to make the material stick 302 only move in the vertical direction. Under the action of the buoyancy and the constraint of the guide groove 303, the material stick 302 will always generate an upward force, so as to keep the material stick 302 in close contact with the transfer roller 201. Until the amount of ink is less than a certain degree, the material stick 302 will separate from the transfer roller 201 when the liquid level is lowered to a certain degree. At this time, the action of manually adding ink can be continued, or automatic liquid level monitoring technology can be used to realize automatic ink adding or alarm prompting (the above technical means is relatively mature, and will not be described in detail here).

[0022] The coating device includes a support 1. At the lowermost end of the support, an initial dyeing device 2 is arranged. The initial dyeing device 2 includes a transfer roller 201 and a pressing roller 202, both of which are arranged on the support 1. The transfer roller 201 and the material stick 302 are in close contact, so as to transfer the ink to the surface of the transfer roller 201. The pressing roller 202 is used to press the transfer roller 201, that is, to ensure that the paper 12 can fully absorb the ink, and to drive the paper 12 and the transfer roller 201 to rotate synchronously under the action of the pressure. A rotating shaft 2011 is arranged at the middle part of the transfer roller 201 and the pressing roller 202. The rotating shaft 2011 is arranged on the support 1. A transmission gear is arranged on the rotating shaft 2011 of the pressing roller 202. The pressing roller 202 is driven to rotate by the first gear set 6 and the first motor 9 arranged below the pressing roller 202.

[0023] In order to adapt to different paper thickness or different diameter of the transfer roller 201, a horizontal adjusting groove corresponding to the rotating shaft 2011 of the pressing roller 202 is arranged on the support 1, and the position of the adjusting groove can be adjusted according to requirements to reach a suitable position. A stopper is arranged to be engaged with the support 1 to fix the rotating shaft 2011 at the required position. The stopper and the support 1 can be fixed by screws or a latch or other technical means.

[0024] A first heating roller 4 is arranged above the primary dyeing device 2, and the non-printed surface of the paper 12 is heated by the first heating roller 4, so that the printed surface of the paper 12 can be quickly dried, and the ink can be quickly stabilized, thereby facilitating subsequent processing steps. The first heating roller 4 is heated by a point heating pipe arranged in the first heating roller 4. Meanwhile, a rotating shaft 2011 and a support are arranged in the middle of the first heating roller 4 to stably connect the first heating roller 4. The second gear set 7 and the second motor 10 are arranged below the first heating roller 4, and are used to drive the first heating roller 4.

[0025] A second heating roller 5 is arranged behind the first heating roller 4, and the second heating roller 5 is used to further bake the dyed surface of the paper. The drying efficiency and stability of the pre-coated ink are improved. After baking, the paper preliminarily coated with the ink enters the next printing and dyeing process of the functional ink.

[0026] After the pre-coating device, the loss rate of the functional ink in the later stage is reduced to 40-60% of the original usage amount. Meanwhile, because the color of the pre-coated ink is consistent with the color of the functional ink, the color difference and the texture can reach the same effect as the original process under the premise that the thickness of the functional ink coating is reduced.

[0027] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as the protection scope of the present application.

Claims

1. A pre-coating device for saving ink, characterized by: The device comprises a support and a preliminary dyeing device arranged above the support, the preliminary dyeing device is used for preliminary dyeing and coating paper, a material containing device is arranged below the preliminary dyeing device, used for containing dye and transferring the dye to the preliminary dyeing device, so as to realize pre-coating of paper and form a base color layer to reduce subsequent ink consumption.

2. The pre-coating device for saving ink according to claim 1, characterized in that: The preliminary dyeing device comprises a transfer roller and a pressing roller, the transfer roller is used for dipping dye in the material containing device, the pressing roller is used for pressing paper and driving the paper and the transfer roller to rotate synchronously, the transfer roller is arranged below the pressing roller, the paper passes between the two, and the pressing roller rotates synchronously with the transfer roller and applies extrusion force to the paper.

3. The pre-coating device for saving ink according to claim 2, characterized in that: Pressure adjusting devices are arranged at both ends of the pressing roller, used for adjusting pressure and distance and adapting to different transfer rollers.

4. The pre-coating device for saving ink as claimed in claim 1 wherein: The material containing device comprises a material tray and a material sticking rod, the material tray is arranged directly below the preliminary dyeing device, used for placing dye, the material sticking rod is arranged in the material tray and can rotate freely, used for transferring dye to the preliminary dyeing device.

5. The pre-coating device for saving ink according to claim 4, characterized in that: The material sticking rod is a light material with density less than water and floats above the dye.

6. The pre-coating device for saving ink as claimed in claim 1 wherein: A first heating roller is arranged behind the preliminary dyeing device, used for drying the back of the paper with dye.

7. The pre-coating device for saving ink according to claim 6, characterized in that: A second heating roller is further arranged above the first heating roller, used for drying the front of the paper with dye.

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