Printing ink drying device

Abstract

The utility model discloses a printing ink drying device which comprises a high-frequency power supply and a working capacitor connected with the high-frequency power supply, and the working capacitor heats printing ink by utilizing a side electric field. Preferably, the working capacitor is a working capacitor bank and comprises a plurality of positive plates and a plurality of negative plates, the positive plates and the negative plates are sequentially arranged at intervals according to the positive-negative-positive-negative rule sequence, and the side electric field is formed below the positive plates and the negative plates. The surface heating and drying device can achieve the purpose of heating and drying the surface of a printed product.

Description

Technical Field

[0001] The utility model relates to the field of product processing, in particular to an ink drying device. Background Art

[0002] After screen printing, the ink usually needs to be dried to achieve rapid production. The existing technology uses infrared radiation to heat the ink. However, thermal radiation only accelerates the drying of the surface layer of the ink and cannot achieve overall drying of the ink. On the contrary, the inner layer of ink will be more difficult to dry due to the "water locking effect" produced by the quick-drying film formation on the surface, which has a great impact on multi-layer printing.

[0003] Ink includes but is not limited to water-based, oil-based, glue, etc. Ink is a highly polar material, and high frequency is highly efficient for dielectric heating. However, dielectric heating usually requires the product to be processed to be placed in a working capacitor. Due to the limited capacity of the plates, it is often difficult to use high frequency heating when the volume of some products is larger than the capacity of the working capacitor plates. In particular, when the substrate to be printed is also a polar material and is not allowed to be heated, it cannot be placed between the plates to dry, otherwise the substrate will also be heated.

[0004] For example, the applicant disclosed a method and device for high-frequency vacuum processing of seamless uppers in Chinese patent document CN107283850A, which includes first covering the upper to be processed, which is composed of multiple layers of upper materials, with a thin silicone sheet that acts as a seal, and applying pressure to the upper to be processed by using the negative pressure formed by the vacuum; then, the upper to be processed is welded and formed by using a high-frequency electric field. The device includes an upper plate and a lower plate that are arranged relative to each other in an upper and lower space to form a working capacitor, and the working capacitor is connected to a high-frequency power supply to form a high-frequency electric field; the lower plate is used to place the upper to be processed, and a vacuum pump is connected to the lower plate to evacuate the upper to be processed.

[0005] For some products with large volume, it is often difficult to use high frequency heating because the lower plate has a limited capacity and the distance between the upper and lower plates is limited. When the product volume or product structure exceeds the capacity of the lower plate or the maximum distance between the upper and lower plates, high frequency heating is often not possible. When the substrate to be printed is also a polar material and does not allow heating, it is also impossible to heat it through the working capacitor formed by the upper and lower plates being arranged relative to each other. Utility Model Content

[0006] In view of this, in order to solve the above technical problems, the purpose of the utility model is to provide an ink drying device, which can achieve the purpose of heating and drying the surface of printed products.

[0007] The technical solutions adopted are:

[0008] The utility model discloses an ink drying device, which comprises a high-frequency power supply and a working capacitor connected to the high-frequency power supply. The working capacitor utilizes a side electric field to heat the ink.

[0009] Furthermore, the working capacitor is a working capacitor group, including multiple positive plates and multiple negative plates, and the multiple positive plates and the multiple negative plates are arranged in sequence according to the regular order of positive and negative, and are arranged at intervals to form the side electric field below the positive plates and the negative plates.

[0010] Furthermore, the sum of the number of the positive electrode plates and the number of the negative electrode plates is an odd number.

[0011] Furthermore, the spacing between two adjacent positive and negative plates is 5-60 mm.

[0012] Furthermore, the working capacitor and a working platform on which the product to be processed is placed can move relative to each other, and the surface of the product to be processed has an ink layer to be dried.

[0013] Furthermore, the working distance between the working capacitor and the working platform is 2-30 mm.

[0014] The beneficial effects of the utility model are:

[0015] The utility model utilizes the side electric field generated by the working capacitor to heat the ink, thereby achieving heating and drying of the ink only. When utilizing the side electric field generated by the working capacitor for heating, there is no spatial limitation and it is not affected by the large volume of the product. Regardless of the volume or structure of the product, the side electric field of the working capacitor can be used to heat the ink. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0017] Figure 1 It is a structural schematic diagram of an ink drying device.

[0018] Figure 2 It is a schematic diagram of the structure of the electric field formed on the side of an ink drying device.

[0019] Figure 3 It is a structural schematic diagram of an ink drying device in working state. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only partial embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 3 As shown, an ink drying device of this embodiment includes a high-frequency power supply. The ink drying device is provided with a working capacitor connected to the high-frequency power supply. The working capacitor utilizes a side electric field to heat the ink.

[0022] As a specific implementation, see Figure 1 As shown, the working capacitor is a working capacitor group, and the working capacitor includes a plurality of positive plates 41 and a plurality of negative plates 42. The plurality of positive plates 41 and the plurality of negative plates 42 are arranged in sequence according to the regular order of positive and negative, and are arranged at intervals, so as to form a side electric field under the positive plates 41 and the negative plates 42. The sum of the number of positive plates and negative plates can be an even number or an odd number. As an optional specific embodiment, the sum of the number of positive plates and the negative plates is an odd number.

[0023] Working capacitor see Figure 2 As shown in FIG. 1 , a side electric field is formed below the positive plate and the negative plate. The side electric field is represented by an arc-shaped arrow.

[0024] As a preferred embodiment, multiple positive plates are connected and fixed to a first transverse plate, and multiple negative plates are connected and fixed to a second transverse plate. The first transverse plate and the second transverse plate are fixed to an insulating bracket, so that the working capacitor group forms a fixed whole.

[0025] The spacing between two adjacent positive plates and negative plates is 5-60 mm, for example, 5 mm, 10 mm or 20 mm, which is set according to actual needs.

[0026] As a specific implementation, the working capacitor and the working platform on which the product to be processed is placed can move relative to each other, and the surface of the product to be processed has an ink layer to be dried.

[0027] The relative movement may be: the working capacitor is in a unidirectional translational movement relative to the working platform to heat the surface of the product to be processed; in this embodiment, the working platform is fixed and the working capacitor is in a unidirectional translational movement.

[0028] Or the working platform is in unidirectional translational motion relative to the working capacitor to heat the surface of the product to be processed. In this embodiment, the working capacitor is fixed and the working platform is in unidirectional translational motion.

[0029] Alternatively, the working platform can be swung back and forth repeatedly relative to the working capacitor to heat the surface of the product to be processed. In this embodiment, the working capacitor is fixed and the working platform is swung repeatedly.

[0030] Alternatively, the working capacitor may be swung back and forth repeatedly relative to the working platform to heat the surface of the product to be processed. In this embodiment, the working platform is fixed and the working capacitor is swung repeatedly.

[0031] To achieve the relative movement, a movable driving device, such as a driving device such as a cart, may be provided on the working capacitor, and the working capacitor is pushed to move by the cart.

[0032] Alternatively, a driving device for moving the working platform is provided, for example, a conveyor belt is used to convey the glass panel as the working platform. The conveyor belt includes, but is not limited to, a belt conveyor belt and a chain plate conveyor belt. The conveyor belt is used to move the working platform, and then the product to be processed is moved.

[0033] In the above, no matter what kind of relative motion is adopted, whether the working platform is stationary and the working capacitor is moving, or the working platform is moving and the working capacitor is stationary, the role of this relative motion is to enable the side electric field of the working capacitor to heat the surface of the ink layer uniformly, thereby drying the ink layer.

[0034] As a specific implementation, the working distance between the working capacitor and the working platform is 2-30 mm, such as 2 mm, 4 mm, 5 mm, etc. The specific working distance can be selected according to actual conditions.

[0035] Of course, as a specific implementation, a plurality of working capacitors can be connected in series, in parallel, or in a mixed connection (both in series and in parallel) to form a working capacitor group, which can be selected according to actual needs.

[0036] See also Figure 3 As shown, the working capacitor includes a positive plate 41 and a negative plate 42 arranged opposite to each other at intervals, and a side electric field is formed below the positive plate and the negative plate. Below the working capacitor is a working platform 2 on which the product to be processed is placed. The surface of the product to be processed 1 has an ink layer 3 to be dried.

[0037] The ink used in the ink layer includes but is not limited to one or more of water-based ink, oil-based ink, glue, and glue, and can certainly be other polar materials, as long as they are polar materials that can be heated by the side electric field.

[0038] The technical principle of the utility model to dry the ink by using the side electric field of the working capacitor is that the ink molecules are small molecules and floating before drying. The so-called drying is to use the side electric field generated by the working capacitor of the utility model to heat the ink:

[0039] 1) Evaporation of water brings ink molecules closer together;

[0040] 2) Raise the ink temperature and give activation energy to the ink molecules;

[0041] 3) Make the ink molecules move more violently, and the ink molecules are connected into a network structure through mutual collision;

[0042] Thereby cross-linking into macromolecules or polymers is completed.

[0043] A method for heating ink using the above-mentioned ink drying device comprises the following steps:

[0044] S1. Placing the product to be processed on a work platform, wherein the surface of the product to be processed has an ink layer to be dried;

[0045] S2. The working capacitor connected to the high-frequency power supply utilizes the side electric field to heat the ink layer.

[0046] In a specific implementation, when the utility model uses the side electric field generated by the working capacitor to heat the ink, the working capacitor is on top and the product to be processed is on the bottom. There is no space restriction below, and any product of any size can be placed. Moreover, the side electric field only heats the ink layer on the surface, thereby drying the ink layer.

[0047] Therefore, the utility model only heats and dries the ink, and when heating with the side electric field generated by the working capacitor, there is no spatial limitation and it is not affected by the large volume of the product. Regardless of the product volume or product structure, the side electric field of the working capacitor can be used to heat the ink.

[0048] Thus, the space limitation between the upper and lower plates of the working capacitor in the prior art is solved, and the surface drying problem of the product whose substrate cannot be heated is solved.

[0049] It should be noted that:

[0050] 1) There is no distinction between "positive" and "negative" plates of a working capacitor. The "positive plate" and "negative plate" in the present invention are used for the convenience of description to distinguish between the two plates.

[0051] 2) The working capacitor and the working platform on which the product to be processed is placed can move relative to each other, and the essence of this relative movement is to make the product to be processed and the working capacitor move relative to each other. It is meaningless to move the working platform without the product to be processed. It is also within the protection scope if the product to be processed forms relative movement with the working capacitor through other means, such as putting shoes on the shoe last. At this time, it can be understood that the shoe last serves as a working platform. That is, the working platform can be flat or three-dimensional. Its movement mode can be two-dimensional movement or three-dimensional movement, and the movement space of the working platform is not restricted. That is, the movement mode of the product to be processed connected to the working platform can be two-dimensional movement or three-dimensional movement, and the movement space of the product to be processed is not restricted.

[0052] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the protection scope of the present invention. All equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An ink drying device, comprising a high frequency power supply, characterized in that: It also includes a working capacitor connected to a high-frequency power supply, and the working capacitor uses a side electric field to heat the ink; the working capacitor includes a positive plate and a negative plate that are arranged opposite to each other at an interval, and a side electric field is formed below the positive plate and the negative plate.

2. The ink drying device according to claim 1, characterized in that: The working capacitor is a working capacitor group, including multiple positive plates and multiple negative plates. The multiple positive plates and multiple negative plates are arranged in sequence according to the regular order of positive and negative, and are arranged at intervals to form the side electric field below the positive plates and the negative plates.

3. The ink drying device according to claim 2, characterized in that: The sum of the number of the positive electrode plates and the number of the negative electrode plates is an odd number.

4. The ink drying device according to claim 2, characterized in that: The distance between two adjacent positive plates and negative plates is 5-60 mm.

5. The ink drying device according to claim 1, characterized in that: The working capacitor and a working platform on which the product to be processed is placed can move relative to each other, and the surface of the product to be processed has an ink layer to be dried.

6. The ink drying device according to claim 5, characterized in that: The working distance between the working capacitor and the working platform is 2-30mm.

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