KR100663398B1 - Printing pad for printing device having multi-layer hardness and manufacturing method for the same - Google Patents

Abstract

A printing pad for a printing apparatus with multi-layer hardness and a manufacturing method thereof are provided to improve the printing performance on the plane and the projected/recessed printed surfaces by forming layers with different hardness and forming the printed end with a ductile material. A printing pad for a printing apparatus with multi-layer hardness is composed of a printing part(10) where a rear end adhered to the ink to print is formed with a ductile material whose hardness is low; and a body part(20) formed with a high hardness material at the supported place to be mounted at the apparatus. The body part has a single body formed with more than two layers whose hardness is different. The printing part has a projected shape or a curved shape.

Description

Printing pad for printing device having multi-layer hardness and its manufacturing method {Printing pad for printing device having multi-layer hardness and manufacturing method for the same}

1 is an exemplary view showing a general pad printing apparatus.

2 is a view illustrating a state in which a print job is performed by the pad printing apparatus of FIG.

3 is a perspective view of a printing pad for a printing apparatus according to the present invention.

Figure 4 is an illustration of various forms of a printing pad for a printing apparatus according to the present invention.

5 is a cross-sectional view of a mold for producing a printing pad for a printing apparatus according to the present invention.

Figure 6 is a flow chart of the process of producing a printing pad for a printing apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: printing unit

20: body part

30: Mold

31: Injection groove

The present invention relates to a pad for a printing apparatus having a multi-layered hardness and a method for manufacturing the same. Specifically, a printing pad made of silicon is formed on a plane and a three-dimensional surface by forming layers such that the pads have different hardnesses for the purpose of each point. When printing a specific pattern, it is possible to obtain excellent printing results and high quality products.

The printing apparatus includes a pad printing apparatus (transfer printing apparatus) for printing using a printing pad according to a printing method, and a screen printing apparatus for printing by spraying or ejecting ink onto a screen mask on which a specific pattern is formed. Forms have been proposed.

In particular, the pad printing apparatus of the printing apparatus is proposed as a suitable device for printing a product with a high yield per unit time due to the advantage that the printing is performed relatively quickly and simply.

1 is a schematic configuration diagram showing the pad printing apparatus. Referring to the drawings, the pad printing apparatus includes a case (1) in which various configurations are required for printing, a jig (2) installed at the front of the case (left side in the drawing), and to which a printing object is mounted; A corrosive substrate 3 having a printing pattern formed on the rear side of the jig 2 and an ink cup 4 for supplying ink to the printing pattern of the corrosion substrate 3 are provided so as to be able to move forward and backward.

In addition, the pad printing apparatus is installed so that the printing pad 5 for substantially printing can reciprocate the upper section of the jig 2 and the upper section of the corrosive substrate 3 to print the pattern of the corrosive substrate 3. And transfer the ink supplied thereto to perform printing on the print object.

In this configuration, the printing pad 5 is mainly made of silicon having excellent ink transfer efficiency, and the silicon is manufactured by drying a silicon raw material filled in a mold in which an injection groove of a desired shape is formed of a thermoplastic resin.

2 is an exemplary view in which printing is performed by the pad printing apparatus. Referring to the drawings, as the object A for performing the printing, a cathode ray tube such as a TV or a monitor, or a panel on which an image of an LCD monitor is displayed is selected, and the front surface of the cathode ray tube or the panel is provided with a plurality of protrusions ( It is well known that 6) and the groove 7, that is, the uneven surface are formed, and the desired electrode pattern 8 is printed on the surface of the uneven surface.

At this time, the electrode pad 8 is formed of a soft material having a substantially low hardness because the conductive ink must be transferred to the outer surface of the protrusion 6 and the inner surface of the groove 7 to enable energization. The print pad 5 is configured to be in contact with the side wall surface, that is, the inner wall surface of the groove 7, and is printable.

Therefore, the printing pad does not significantly affect the printing stability and printing accuracy when the printing surface for printing is in the form of a flat plate, but the printing pad should be made very soft in order to perform printing on the volume surface protruding up and down. It can be seen.

The conventional soft printing pad is adhered because the degree of plastic deformation that is extended (both left and right) to both sides is greater than that of the general printing pad when the printing pad is pressed to the printing surface of the object to perform printing. As the density of the ink is lowered, not only the printed color body is blurred, but the exact transfer of the printing boundary surface is very difficult, and thus a problem of not obtaining excellent printing results occurs.

In particular, the soft printing pad has a high risk of breakage such as being easily torn by an external impact, and the problem of low quality of the printing pad itself is exposed because the bonding force between members supporting the printing pad is weak.

The present invention has been invented to solve the above problems, and the point for performing printing on the printing surface having a volume protruded / recessed up and down is formed in a soft, and each of the other points are different hardness for a specific purpose. It is an object of the present invention to provide a printing pad which has a layer formed thereon so as to realize excellent printing results and high quality products.

Another object of the present invention is to provide an optimal method for manufacturing a printing pad to be implemented in the above excellent printing results and high quality products.

In order to achieve the above object, the present invention has the following configuration. The present invention is a printing pad which is installed in the pad printing apparatus to adhere the ink injected into the printing pattern of the corrosive substrate, the transfer to the object to perform the printing, wherein the end point to which the ink is adhered and transferred is printed with a soft material of low hardness The portion is formed, and the point supported for installation in the device is formed of a body of high hardness material, the printing portion and the body portion is formed of a single body.

In order to achieve the above another object, the present invention, in the manufacturing process of the printing pad which is installed in the pad printing apparatus to adhere the ink injected into the printing pattern of the corrosive substrate and transfer to the object to perform printing, the injection groove of the desired form Putting a silicon raw material to form a soft printing unit therein and soft curing the inside; Injecting and curing the silicon raw material for forming a hard body portion on the cured silicon to perform a surface hardening, and taking out the surface-hardened silicone from the mold and characterized in that it comprises a continuous curing .

Hereinafter, with reference to the accompanying drawings an embodiment of the present invention to which the above configuration is applied will be described in detail. At this time, the printing apparatus to which the present invention is applied is due to the conventional printing apparatus.

3 is a perspective view of a printing pad for a printing apparatus according to the present invention. Referring to the drawings, the printing pad according to the present invention is formed by dividing the printing portion 10 and the body portion 20, the material is made of fast curing (RTV type) silicon for shortening the curing time.

The printing unit 20 is an end point formed to adhere and transfer ink, so that the hardness thereof is low, and when the printing surface of the object A has a three-dimensional volume protruding upward and downward, printing is performed on both side wall surfaces thereof. Do it.

The body portion 20 is formed in the form of a single body of the same material as the printing portion 10, it is natural that the other end portion formed with the printing portion 10 is a coupling end for installation in the device, the printing portion 10 It is formed to have a high hardness to harden more.

In particular, such a body portion 20 may itself be formed as a single body to have two or more layers, the basic condition at this time is to ensure that the hardness of the printing portion 10 is the lowest, to be coupled to the device The hardness of the end point is configured to be the highest.

That is, when the printing unit 10 is pressed to the printing surface having a three-dimensional volume, the configuration as described above maintains a stable pressurized state in a state in which plastic deformation (spread to the left and right) of the body unit 20 is limited. It will not have a big impact on the density of.

In addition, the configuration is excellent in the physical rigidity of the body portion 20 against the external force, the hardest point is coupled on the device, it is possible to maintain a state in which the bonding state is more robust.

4 is a cross-sectional view of various forms of a printing pad for a printing apparatus according to the present invention. Referring to the drawings, the printing unit 10 has an end point in contact with the printing surface as shown in (a) converges on a substantially center line in cross section and protrudes, or (b) the printing unit 10 as a whole It presents a curved form.

In addition, the printing unit 10 is the end of the point contacting the printing surface as shown in (c) converged in the line spaced apart from the center line in the cross section and the surface of the point where the ink sticks out of the protruded slope of both sides or any one side This curved form or, as shown in (d), the surface of the point where the ink sticks out of the protruding slopes on either side or one side may be planar. The shape of such a printing pad is selected and applied due to the form in which the pressing force is generated according to the printing surface of the object A and the plastic deformation of the printing portion occurs.

5 is a cross-sectional view of a mold for manufacturing a printing pad for a printing apparatus according to the present invention, and FIG. 6 is a flowchart of a process for manufacturing the printing pad for a printing apparatus according to the present invention. Referring to the drawings, the mold 30 for manufacturing the printing pad is separately manufactured by manufacturing a mold having an injection groove 31 corresponding to the printing portion 10 and the body portion 20 of the printing portion 10. After injection molding is configured to couple the mold of the body portion 20 by injection molding the body portion 20.

Alternatively, the mold 30 is initially formed to have an injection groove 31 corresponding to the entire length of the printing portion 10 and the body portion 20, and the printing portion 10 is formed therein. The silicon raw material may be input to form the printing unit 10, and then the body 20 may be injection molded. These molds 30 can be selectively applied according to the injection conditions of the silicon raw material.

In the process of manufacturing the printing pad by the mold 30 described above, first, a silicon raw material for forming a soft printing unit is injected into the injection groove 31 of a desired shape (S1), and a predetermined temperature and humidity are maintained. And soft curing for a period of time (the tentative name given to the meaning of curing the softest part) (S2).

At this time, when the silicon raw material is cured and solidified, a certain temperature is maintained at 15 ° C to 25 ° C, a constant humidity is maintained at 13% to 17%, and such a state is maintained for 110 minutes to 130 minutes and soft. Curing will be performed.

Here, when the above-mentioned temperature condition is less than 15 ℃ and the humidity is maintained above 17%, the silicone is excessively hardened hard to solidify to the desired form, the temperature condition exceeds 25 ℃ and less than 13% If the humidity is kept too hard, it becomes difficult to perform accurate printing on the printing surface in the form of the side wall. In addition, when the curing time is less than 110 minutes, it is difficult to maintain the solid form because the silicone is not cured, and if it exceeds 130 minutes, it is excessively hardened so that it cannot be integrated into the form of a single body during the injection of the body 20 to be described later. .

Thereafter, in order to form a hard body 20 on the cured silicon, the same silicon raw material as the above is introduced into the injection groove 31 (S3) and hardened to perform surface hardening (S4). .

At this time, the surface hardening is to maintain the temperature and humidity conditions at the time of soft curing, only increase the curing time to 46 hours to 50 hours, the body portion 20 is rapidly hardened compared to the printing portion 10 and the hardness thereof is increased To do that. Here, when the curing time is less than 46 hours, the body portion 20 is not completely solidified, so that the shape is easily disintegrated when taken out of the mold, and when the curing time is exceeded 50 hours, the printing portion 10 is easily formed by excessive curing. It is separated and cannot be integrated into a single body.

When the surface hardening is completed as described above, the printing pad can be taken out from the mold (S5), and the taken out printing pad is subjected to continuous hardening (S6) to be manufactured as a finished product. In this case, after the continuous curing is taken out of the mold, it is carried out at room temperature for 21 days (3 weeks), the body portion 20 on the soft-cured printing portion 10 before the continuous curing two or more layers In order to be formed to have a different hardness, the surface hardening may be performed two or more times.

Here, the duration hardening time is limited to only the minimum value, to be applied to the printing device after at least 21 days, when used in the 21 days have not elapsed when the silicone tissue to press the printing surface is easily deformed product The service life and print quality of the gradual decrease.

As described above, the present invention forms a layer to have a different hardness for each point, so that the end portion to be printed is formed to be softer, so that the printing surface protrudes / decreases flat and up and down. This has the effect of obtaining a printout of the result.

In addition, the present invention is formed by the portion coupled to the point to be supported in the device is hard to improve the high response to the external impact and its support strength, thereby achieving the effect of high quality products.

Claims (8)

In the printing pad is installed in the pad printing apparatus to adhere the ink injected into the printing pattern of the corrosive substrate, transfer to the object to perform printing, The end point to which the ink is adhered and transferred is formed of a soft material having a low hardness, and the printing part 10 is formed, and a point supported to be installed in the apparatus is formed of a body part 20 having a high hardness material. Print pad for a printing device having a multi-layer hardness, characterized in that 10 and the body portion 20 is formed in a single body. The method of claim 1, wherein the body portion 20 A printing pad for a printing device having a multi-layer hardness, comprising a single body formed of two or more layers having different hardness. The method of claim 1, wherein the printing unit 10 End point in contact with the printing surface of the object (A) is converging and protruding in the form of a line approximately center line in the cross-section or one side spaced apart, or at least one of the slopes on both sides of the convergence is curved or printed portion A printing pad for a printing device having a multi-layer hardness, characterized in that (10) is formed by selecting any one of the curved shapes as a whole. In the manufacturing process of the printing pad which is installed in the pad printing apparatus to adhere the ink injected into the printing pattern of the corrosive substrate, transfer to the object to perform printing, Injecting a silicon raw material for forming a soft printing unit into the injection groove 31 having a desired shape and soft curing the raw material; Injecting and curing the silicon raw material for forming the hard body portion 20 on the cured silicon to perform a surface hardening, taking out the surface-hardened silicon from the mold 30 and then performing continuous curing Print pad manufacturing method for a printing device having a multi-layer hardness, comprising a. The method of claim 4, wherein the soft hardening The hardness of the multilayer, characterized in that the humidity is maintained at 13% to 17% when the raw material introduced into the injection groove 31 is solidified, and the temperature is maintained at 15 ℃ to 25 ℃ and 110 minutes to 130 minutes Printing pad manufacturing method for a printing device having a. The method of claim 4, wherein the surface hardening Method for manufacturing a printing pad for a printing device having a multi-layer hardness, characterized in that for 46 hours to 50 hours is carried out so that the body portion 20 has a high hardness compared to the printing portion 10 is subjected to soft curing. The method of claim 6, wherein the surface hardening Method for manufacturing a printing pad for a printing device having a multi-layer hardness, characterized in that it is performed two or more times to form a multi-layer body portion 20 having different hardness in two or more layers on the soft-cured printing (10). The method of claim 4, wherein the continuous curing After being taken out of the mold, the printing pad manufacturing method characterized in that it is carried out over 21 days at room temperature so that the printing portion 10 and the body portion 20 is formed in a single body.

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