KR101866965B1

KR101866965B1 - Printing pads and means for fixing them

Info

Publication number: KR101866965B1
Application number: KR1020180039276A
Authority: KR
Inventors: 안동준
Original assignee: 안동준
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2018-06-12
Also published as: WO2019194359A1

Abstract

The present invention relates to a printing-pad and fixing means dedicated to a pad printing facility. The pad device includes a main body portion including a block-type pad main body, a printing unit including an outer surface centering guide and separably coupled to the lower portion of the main body portion, a sealed negative pressure space formed between the coupled main body and the printing unit, and an air valve. In addition, the fixing means includes a plate-shaped first fixed portion and a ring-shaped second fixed portion and pressurizes and fixes an outside flange of the printing-pad seated in the first fixed portion. According to the present invention, the printing unit can be conveniently replaced if necessary, and thus printing quality can be ensured and economic advantages can be improved. In addition, it significantly facilitates printing-pad centering work for precision. In addition, the printing-pad can be very stably fixed and maintained.

Description

[0001] DESCRIPTION [0002] Printing pads and means for fixing them [0003]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print-pad and a fixing means, and more particularly, to a printing-pad and a fixing means used in a pad printing apparatus.

The printing equipment includes a pad printing equipment for attaching a pattern using a pad and transferring the pattern to an object to perform printing, a screen for performing printing by jetting or discharging ink to a screen mask having a specific pattern, Printing facilities, and the like. In particular, it is known that a pad printing apparatus using a pad is suitable for printing a product requiring mass production due to the fact that printing is performed relatively quickly and simply.

1 is a schematic view showing the above-described pad printing equipment. Referring to FIG. 1, the pad printing apparatus 1 includes a case having various configurations necessary for printing, a jig 2 mounted on the front (left side in the figure) of the case to which a printing object is mounted, And an ink cup (4) installed to be able to move forward and backward by supplying ink in a print pattern of the erosive substrate (3).

In addition, the facility 1 is provided with a print-pad 5 in the form of a U-shaped, V-shaped or similar convex downwardly for performing printing, 3 so as to perform transfer printing on the surface of the printing object after the ink supplied to the printing pattern on the etching substrate 3 is adhered to the surface. In this configuration, the print-pad 5 is mainly made of silicon having excellent transfer efficiency of ink, and is formed in a predetermined form necessary for printing. As the fixing means, a method of bonding the base plate 7 with an adhesive such as silicone As shown in FIG.

2, specifically, the ink pattern 6 on the erosive substrate 3 is transferred to the pad 5 by the contact pressure at which the print-pad 5 descends, and the pad 5 descends again, It is known that printing of the object A is carried out by transferring the pattern 6 from the pad 5 while pressing the surface of the object A. At this time, for complete transfer and transfer of the pattern 6, the print-pad 5 needs to be soft to a considerable degree of hardness.

However, in the so-called silicon pad 5, the harder the hardness is, the faster the hardening proceeds at room temperature. Accordingly, when the same pad 5 is continuously used, the pressure repeatedly applied at the time of printing, The quality of printing is deteriorated by the surface scratches caused by the aging time, the degree of curing by the elapsed time, and the like.

In the field, the print-pads 5 are replaced with new ones. As a matter of course, the portion where the damage or deformation actually occurs corresponds to the end portion of the pad 5, but it is economically disadvantageous to replace the entire pad 5 nonetheless. In particular, considering the fact that the price of uninterruptible silicon, which prevents the generation of static electricity, is two times higher than that of ordinary silicon materials, a special countermeasure against this problem is necessary.

The printing pad 5 is attached to the base plate 7 as a fixing means by silicone bonding and is installed in the apparatus 1 as fixing means. At this time, the bonding of the printing pad 5 There is a problem that the fixing is inconvenient and easy to separate, and the problem is doubled as the printing process and the printing pressure are repeated. Furthermore, in this case, the printing pressure can finely deform the correct positioning and fixation of the printing-pad 5 (see, for example, the chain line portion of Fig. 2 and the laterally convex shape) The precision of centering and printing is undermined.

The present invention has been proposed to solve the problems of the conventional pad type or structure. SUMMARY OF THE INVENTION It is an object of the present invention to provide a print-pad for a pad printing machine, which comprises two parts, a relatively large-sized main body and a small-

Excellent system applicability;

The quality of printing can be ensured and at the same time the economy of replacement can be improved;

So that the printing unit can be stably maintained during a printing operation;

And to provide a separate print-pad.

Furthermore, it is an object of the present invention to provide a separate printing pad capable of ensuring the precision of printing by making it possible to easily and precisely perform the printing centering operation of the printing pad, which is frequently changed at a rapid cycle.

It is a further object of the present invention to provide a printing press capable of firmly and stably fixing and supporting a printing pad in any form, whether the two parts are integral or detachable, And to provide a pad fixing means that does not change the fixation.

The print-pad of the present invention is based on a print-pad which is provided on a reciprocating portion of a pad printing equipment and which prints on the surface of the object by pressing the ink deposited on the printing pattern of the substrate.

Here, the print-pad includes:

A body portion including a block type pad body;

A block type pad printing unit coupled to a lower portion of the main body body by a detachable structure and having a plurality of centering guides formed on an outer surface thereof;

A negative pressure space connected to the outside through an exhaust line passing through a passage formed through the body, the sealed space being formed between the body and the printing unit;

An air valve installed in the exhaust line for controlling the flow of air;

/ RTI >

The negative pressure space includes:

A negative pressure is produced which is exhausted by pressing the printing part fastened to the body in a vertical direction or by connecting and operating another exhausting means to the air valve side to provide a bonding force between the body and the printing part;

.

Preferably, the air valve is an on / off valve or a check valve.

The detachable structure has a structure in which one end of the lower end of the body and the upper end of the printing unit is fixedly fitted at the other end. Specifically, the pressing member includes a pressing support protruding downward from an edge of the body, and a convex surface formed at an upper center of the printing unit and fitted inside the support. In order to reinforce the fastening force of the detachable structure, the support base may include one or more pressure protrusions that protrude inwardly to press the side surface of the convex surface, and preferably the protrusions correspond to a side slope of the convex surface It is a wedge-shaped projection to be interviewed.

On the other hand, in order to precisely set and fasten the position and direction of the printing portion at the time of the fastening, the surface on which the body and the printing portion come into mutual contact with each other by the detachable structure, specifically, the inner surface and the convex surface side Guide projections and grooves corresponding to each other are formed.

The negative pressure space is a space formed between the convex surface of the printing portion and the upper surface of the inside of the support when the printing portion is fastened. At this time, in order to sufficiently form the space and make the exhaust quick, the inner upper surface of the support is designed to be concave and the passageway is formed from the top of the concave space.

The fixing means of the present invention comprises means for mediating the print-pad to be mounted on the reciprocating portion of the pad printing equipment;

A first plate-shaped fixing part formed with an inner concave surface,

And a ring-shaped second fixing portion which is fastened to an edge portion of the first fixing portion and has a through hole formed in the inside thereof;

The print-pad is protruded while being inserted into the through-hole in a state where the back surface is seated on the concave surface of the first fixing portion,

Wherein an outward flange portion of the print-pad is pressed and fixed between the first and second fixing portions;

.

Preferably, the through hole of the second fixing part has an inclination angle such that its inner wall narrows toward the outside corresponding to the tapered section. This inclination angle reinforces the printing-pad fixing force of the fixing means by pressing contact with the outer surface taper section of the corresponding printing pad, and prevents the printing pad from expanding sideways (see FIG. 2) due to the printing pressure do.

In this fixing means, the print-pad can be applied without limitation, whether it is a body part, a print part, or an integral part.

The printing pad of the present invention includes a pad body portion connected to a reciprocating portion side of a pad printing facility using fixing means and a printing portion detachably attached to a lower portion of the body portion to adhere and transfer ink to a surface, Stage separable pad structure, and a physical coupling force between the main body portion and the printing portion and a coupling force due to a negative pressure generated in the self-supporting portion are applied.

Thus, the print-pad comprises:

Pad printing equipment,

It is possible to effectively improve the economical efficiency while ensuring the quality of the transfer printing by simply replacing only the flexible printing portion itself as needed without changing the durable main body portion of the pad device;

A negative pressure that provides a coupling force between the body portion and the printing portion can be generated by a simple configuration and operation;

Wherein the printing unit is stably supported during a printing operation by the system;

And so on.

The printing pad may further include a plurality of centering guides formed on an outer surface of the printing unit. Accordingly, the printing-pads, which are frequently replaced at a rapid cycle, particularly, the printing centering operation of the printing unit can be easily and accurately performed, thereby ensuring the precision of printing.

The print-pad fixing means of the present invention fixes the print-pad in such a manner that the first and second fixing portions press the fixing-side flange portion while projecting the printing-side end portion of the printing-pad through the through-hole, Preferably, the through-hole and the print-pad are in contact with each other in an inclined wedge shape. Therefore, the print-pad can be firmly and stably fixed and supported, and the accurate positioning and fixation of the print-pad are not changed even at the print pressure, thereby realizing the precision printing.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic block diagram of a conventional transfer printing system. Fig.
Fig. 2 is a view for explaining a printing operation in Fig. 1; Fig.
3 is a perspective view of a print-pad according to the present invention.
4 is an exploded view of Fig.
5 is a sectional view taken along line AA in Fig. 3;
Figure 6 is an exhaust view of Figure 3;

The features and operation effects of the present invention 'print-pad' and 'fixing means' described above or not will be further clarified through the description of the embodiments described below with reference to the accompanying drawings. 3, the print-pad of the present invention is labeled 10 and the print-pad fixture of the present invention is labeled 40.

The printing pad 10 is mounted on the upper and lower reciprocating portions of the pad printing apparatus shown in FIG. 1, and prints the ink on the printing pattern of the etching substrate, . Here, since the print-pad 10 can not be installed directly on the reciprocating portion, the fixing means 40 mediates the print-pad 10 to be installed on the reciprocating portion of the transfer printing system.

Hereinafter, the printing pad 10 will be described, and then the fixing means 40 will be described.

The printing pad 10 of the present invention includes a main body portion 11 including a block type pad body 13 and a pad printing portion 17 which is detachably fastened to a lower portion of the main body portion 13 of the main body portion 11, (20) including the passage (23) of the main body part (11) for controlling the exhaust of the negative pressure space (22) in the printing pad (10) And an air valve (15) installed at the distal end of the valve body (24).

The body portion 11 includes a block-type pad body 13 adapted to be fixed to a fixing means 40 provided on a reciprocating portion of the above-mentioned equipment. Here, the 'block type' may be understood as a concept corresponding to a so-called 'space type', which is preferable in view of the durability against the vertical printing pressure and the binding force of the printing unit 14, Therefore, the space type is excluded.

The printing unit 14 is attached to the lower part of the pad body 13 of the main body 11 in a detachable manner by a detachable structure 16 and has a plurality of centering guides 27 formed on the outer surface thereof. to be. In the present embodiment, the detachable structure 16 has a structure in which one end of the lower end of the main body 11 and the upper end of the printing unit 14 are fitted and fixed in close contact with the other end. First, the centering guide 27 is a protrusion, an etched or a matte-processed '-' type or a '+' type, corresponding to the marking on the erosion substrate (3 'in FIG. 1) The centering operation is performed by confirming that the guide 27 is aligned with the markings of the substrate when the printing unit 14 is pressed at the time of setting. Thus, precise and consistent printing can be performed.

More specifically, the detachable structure 16 includes a pressing support 17 protruding downward from the edge of the body 13, a pressing member 17 formed at the upper center of the printing unit 14, And a convex surface 18 to be fitted. In order to reinforce the fastening force of the detachable structure 16, the support 17 may include a pressure projection 19 which protrudes inward and presses the side surface of the convex surface 18, Shaped protrusion 19 is a wedge-shaped protrusion which is in contact with the side surface inclination of the convex surface 18 and can be provided in two or more stages as shown.

The pressure projection 19 can press the side surface of the printing section 14 and can be embedded therein even if the printing section 14 is relatively soft as compared with the pressure projection 19. [ There will be.

On the other hand, on the side of the body 13 and the printing portion 14 which are mutually fitted and brought into contact with each other by the detachable structure 16, specifically, the inner surface of the support 17 and the side surface of the convex surface 18, A plurality of guide grooves 20 and grooves 21 are formed in the guide grooves 20 and 21 so that the position and direction of the guide grooves 20 and 21 can be precisely set and fastened at the time of fastening the print portion 14, .

The pad printing unit 14 is fastened to the pad body 13 of the main body 11 by the detachable structure 16 and the reinforcing structure. At this time, the rounded step 12 is formed in the main body part 11 in comparison with the outer edge of the printing part 14, so that the printing part 14 is prevented from protruding from the main body part 11, 14) is pushed out. However, since the printing unit 14 directly performs the transfer printing on the object, it has its own weight and is directly receiving the transfer pressure. Therefore, there is a possibility that the printing unit 14 may be arbitrarily separated from the main body 11 during the printing operation do. The pad device 10 includes a negative pressure space 22 formed therein so that the physical force and the negative pressure force between the body 13 and the print section 14 complement each other.

In the present invention, the negative pressure space 22 is a sealed space defined between the fastened body 13 and the printing unit 14, and is connected to an exhaust line (not shown) passing through the passage 23 formed through the body 13 24 to the outside.

Specifically, the negative pressure space 22 is formed between the convex surface 18 of the printing unit 14 and the inner upper surface of the support 17 when the printing unit 14 is fastened to the main body 11 . At this time, in order to sufficiently form the negative pressure space 22 and allow the exhaust to be performed quickly, the body 13 is designed such that the inner upper surface of the support table 17 is concave and the passage 23 is formed from the roof of the roof space .

In the negative pressure space 22, the internal air is discharged to the outside through the passage 23 and the exhaust line 24, and a negative pressure is generated therein. At this time, it is possible to discharge the air, The printing pad 10 of the present invention further includes an air valve 15 installed in the exhaust line 24 for controlling the flow of air.

The exhaust line 24 extends from the passage 23 of the body 13 to an exhaust hole 26 formed at one side of the fixing means 40 and the air valve 15 is connected to the exhaust line 24 And is attached to the end discharge hole 26 side. However, the layout design of the exhaust line 24 and the air valve 15 may be changed as needed. The air valve 15 may be a non-return type check valve, but an on / off valve for manual operation may be effectively applied. Reference numeral 29 denotes a pressure gauge for measuring the pressure value of the exhaust space.

The main body portion 11 and the printing portion 14 are relatively hard and soft molded for the durability against the printing pressure of the main body portion 11 and the transfer precision of the printing portion 14 in the present embodiment. . However, in the present invention, there is not necessarily a difference in hardness on both constitutions (13, 14), and in other embodiments, both side hardnesses are 1: 1.

The body portion 11 is integrally molded and configured in the form of a hard block so that it can be firmly mounted on the fixing means 40 and the pad printing equipment (for example, reference numeral 1 'in FIG. 1) It is possible to firmly support the flexible printing portion 14 fastened to the flexible printed portion 14 and to maintain the flexible printing portion 14 in spite of the printing and transfer pressure. This is also related to the fact that the body 13 and the printing unit 14 are block-shaped. If the body 13 and the printing unit 14 are so-called space type, So that it is not considered suitable for the transfer printing system.

Since the printing unit 14 is a part for performing transfer printing by adhering the ink pattern to the surface of the object, the printing unit 14 is formed with a softness lower than that of the body 11. [ The printing pad 10 according to the present invention includes a block-shaped body 13 formed of a material having a relatively high hardness so as to be installed on the reciprocating support side of the transfer printing system, And a block-shaped printing unit 14 formed of a material of low hardness so as to adhere and transfer ink onto the surface.

Preferably, at least the printing portion 14 out of the main body 11 and the printing portion 14 is formed by using a die made of an unirradiated silicon material. That is, the liquid silicon raw material is injected into the mold and is molded by soft curing or hard curing for a predetermined time while maintaining a constant temperature and humidity. First, soft curing conditions for forming the printing unit 14 are preferably maintained at 110 to 130 minutes at a temperature of 15 to 25 DEG C and a humidity of 13 to 17% to perform the soft curing. On the other hand, in the hard curing condition for forming the main body 11, the curing time is increased from 46 hours to 50 hours under the same temperature and humidity conditions as described above, and the hardness is increased by rapid curing compared to the printing unit 14.

For example, when the temperature is less than 15 ° C. and the humidity is more than 17%, the silicone is difficult to be solidified in a desired form. When the temperature is more than 25 ° C. and the humidity is less than 13%, the resin is excessively cured. Also, in terms of time, in the case of less than 110 minutes, silicon is not cured and solid form maintenance is difficult, and when it exceeds 130 minutes, there is a problem that it is excessively cured.

On the other hand, in the hard curing, when the time is less than 46 hours, the body 13 can not be solidified to the required degree, and when it exceeds 50 hours, the silicone is lost in elasticity expected in the printing operation due to excessive curing . However, as long as it is relatively hard compared to soft curing, the conditions need not be applied severely. If necessary, the molded and cured body portion 11 and the printing portion 14 may be supplied through natural curing for a proper time at room temperature.

The print-pad 10 constructed as described above can be applied to a conventional pad printing apparatus (see FIG. 1) via the fixing means 40, The upper portion of the jig 2 and the upper portion of the erosive substrate 3 can be vertically or back and forth reciprocated in a state in which the printing unit 14 is fastened to the printing substrate 13 and supplied to the printing pattern on the erosive substrate 3 The ink is adhered to the surface of the printing unit 14, and then the transfer printing is performed on the surface of the object A to be printed.

6, the printing unit 14 is attached to the lower body 13 of the main body 11 already provided in the fixing means 40 by using the detachable structure 16 and the guide structures 20 and 21, (See arrow 1). The reciprocating portion of the equipment is vertically lowered so that the printing portion 14 is brought into contact with the paper surface and pressed at an appropriate pressure (see arrow 2) (See arrow ③), a negative pressure is generated in the space 22, which provides a coupling force between the body 13 and the printing unit 14. Reference numeral 29 denotes a pressure gauge for the negative pressure space 22.

This exhausting action can be performed by the material characteristics (pressing-restoring) of the body 13 and the printing unit 14, and it is of course possible to use a separate exhaust means such as a vacuum pump (Not shown) may be connected and operated so as to be exhausted. After the air valve 15 is turned off after the necessary exhaustion is completed in any way, a physical coupling force between the body 13 and the printing unit 14 and a coupling force due to a negative pressure generated in the self- , Thereby performing the above-described printing operation stably.

On the other hand, when such a printing job is repeated, the quality of printing is deteriorated due to the transfer pressure repeatedly applied to the printing unit 14, surface scratches caused by repeated contact with the substrate and the object, . In this case, when the air valve 15 or the separate purge valve is forcibly turned on, the outside air flows into the negative pressure space 22 and the negative pressure is destroyed, so that the printing portion 14 can be easily removed from the main body portion 11 . That is, by simply replacing the printing unit 14 only as needed with the main body 11 of the printing pad 10 left unchanged, the quality of printing can be assured and economic efficiency can be improved.

The fixing means 40 of the present invention is a means for mediating the printing pad 10 to be mounted on the upper and lower reciprocating portions of the pad printing equipment. In this embodiment, as the printing pad 10, It should be noted that although the portion 11 and the printing portion 14 are illustrated as being removable as described above, the fixing means 40 may be applied without limitation, whether the two configurations 11,14 of the print- You can.

Specifically, the fixing means 40 includes a plate-like first fixing portion 41 formed with an inner fitting surface 42, a second fixing portion 41 fastened to an edge portion of the first fixing portion 41, And a ring-shaped second fixing part 43 formed with a ring-shaped member 44. The printing pad 10 protrudes while being inserted into the through hole 44 in a state where the back surface of the main body 11 is seated on the concave surface 42, The portion of the outward flange 28 on the side of the main body 11 of the print-pad 10 disposed between the edges 41 and 43 is pressed and fixed at the edge facing portion 46 or an adjacent portion thereof.

A plurality of concentric fine protrusions 45 may be formed on the recessed surface 42 to prevent the flow of the printed-pads 10 when the printed surface of the printed-pads 10 is squeezed. At the same time, So that a vacuum for adsorption of the pad 10 is formed. An exhaust line 24 connected to the passage 23 is formed in the first fixing portion 41 and the air valve 15 is connected to the end discharge hole 26 of the exhaust line 24. [ .

The through hole 44 of the second fixing part 43 is formed so that the inner surface 44a of the through hole 44 is tapered toward the outside corresponding to the outer surface tapered section of the print pad 10, ([theta]). The inner surface 44a of the through hole 44 presses the outer tapered section of the corresponding main body 11 to reinforce the fixing force of the fixing means 40 to the printing pad 10, It is possible to prevent the print-pad 10 from being laterally extended (see Fig. 2).

If the print-pad 10 is laterally extended by the printing pressure, the outer surface of the main body 11 of the silicone print-pad 10 is caught by the upper edge of the through-hole 44 and torn Occurs. In order to prevent this, the upper end of the through hole 44 is preferably smoothly rounded.

10. Print-Pad 40. Fixing means
11. Main body 41. First fixing part
12. Step 42. Recessed side
13. Body 43. Second fixing part
14. Printing section 44. Through hole 44a. Inside surface
15. Air valve 45. Microprojection
16. Detachable structure 46. Facing portion
17. Supports θ. Inclination angle
18. Convex side R. Round
19. Pressure projection
20. Guide projection
21. Home
22. Negative pressure space
23. The passage
24. Exhaust line
26. Emitter
27. Centering Guide
28. Flange
29. Pressure gauge

Claims

In a printing-pad dedicated to a pad printing apparatus,
A main body portion (11) including a block type pad body;
A block type pad printing unit 14 detachably attached to a lower portion of the body 13 of the main body 11 by a detachable structure 16 and having a plurality of centering guides 27 formed on an outer surface thereof;
A vacuum space formed between the body 13 and the printing unit 14 and connected to the outside through an exhaust line 24 via a passage 23 formed through the body 13, (22);
An air valve (15) installed in the exhaust line (24) for controlling the flow of air;
/ RTI >
The negative pressure space 22 includes:
The air is exhausted by pressing the printing part 14 fastened to the body 13 in the vertical direction or by connecting and operating another exhausting means to the air valve 15 side so that the body 13 and the printing part 14 ) &Lt; / RTI >
Wherein the print-pad comprises:

The method according to claim 1,
Characterized in that the main body part (11) and the printing part (14) are formed relatively hard and soft for the durability against the printing pressure of the body (13) and the transfer precision of the printing part (14) Print-pad.

The method according to claim 1,
And the printed portion 14 is prevented from protruding from the main body portion 11 so that an extended step 12 is formed in the main body portion 11 as compared with the outer edge of the printed portion 14, .

The method according to claim 1,
The centering guide 27 is a protruding, etched or matte-processed marking. When the printing unit 14 is pressed during the setting of the printing pad 10, the centering guide 27 confirms that the guide 27 is aligned with the markings of the substrate So that a centering operation can be performed.

The method according to claim 1,
Wherein the detachable structure (16) has a structure in which one end of the lower end of the body (13) and the upper end of the printing unit (14) is fixed by being fitted to the other end.

5. The method of claim 4,
The detachable structure 16 includes a pressing support 17 protruding downward from an edge of the body 13 and a convex surface 17 formed at the upper center of the printing unit 14 and fitted in the support 17, (18). &Lt; / RTI >

The method according to claim 6,
Characterized in that the support base (17) comprises a plurality of pressure protrusions (19) having one or more ends, the support base protruding inwardly to press the side surface of the convex surface (18).

8. The method of claim 7,
Characterized in that the pressure protrusion (19) is a wedge-shaped protrusion which is in contact with the side inclination of the convex surface (18).

The method according to claim 1,
Wherein a plurality of guide protrusions (20) and grooves (21) are formed on both sides of the body (13) and the printing section (14) -pad.

The method according to claim 6,
Characterized in that the negative pressure space (22) is a space formed between the convex surface (18) of the printing section (14) and the upper surface inside the support table (17) when the printing section (14) pad.

11. The method of claim 10,
Characterized in that the inner upper surface of said support (17) is designed to be recessed to form a negative pressure space (22), said passage (23) being formed from a top of said recessed space.

The method according to claim 1 or 11,
The exhaust line 24 extends from the passage 23 of the body 13 to a discharge hole 26 formed on one side of the fixing means 40 and the air valve 15 is provided on the side of the discharge hole 26 Wherein the plurality of print-pads are mounted on the printhead.

The method according to claim 1,
Characterized in that the air valve (15) is a check valve or an on / off valve.

A fixing means for mediating the print-pad to be installed on the upper and lower reciprocating portions of the pad printing equipment;
A first plate-like fixing part 41 formed with an inner concave surface 42,
And a ring-shaped second fixing portion (43) which is fastened to an edge portion of the first fixing portion (41) and has a through hole (44) formed on the inner side thereof;
The print-pad 10 protrudes while being inserted into the through hole 44 in a state where the back surface is seated on the concave surface 42 of the first fixing portion 41,
A portion of the outward flange 28 of the print-pad 10 is pressed and fixed between the first and second fixing portions 41 and 43;
. &Lt; / RTI >

15. The method of claim 14,
The through hole 44 of the second fixing portion 43 is configured so that the inner surface 44a of the through hole 44 has an inclination angle θ that narrows toward the outer side corresponding to the outer surface taper portion of the printing pad 10 Characterized by securing means.

15. The method of claim 14,
The through-hole (44) is rounded (R) to protect the surface of the print-pad (10) which is pressed by the printing pressure.

15. The method of claim 14,
A plurality of concentric fine protrusions 45 are formed on the recessed surface 42 to prevent the flow of the printed-pads 10 when the printed-pads 10 are squeezed, So that a vacuum for adsorption is formed.

15. The method of claim 14,
The print-pad (10) is the removable print-pad of any one of claims 1 to 11;
An exhaust line (24) connected to the exhaust space (22) through the passage (23) is formed in the first fixing portion (41);
. &Lt; / RTI >