JP2010115889A - Pad member in transfer device for pad printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pad which can perform good printing by transferring ink easily on each side of prints in various forms. <P>SOLUTION: The pad 1 includes a bottom wall 2, a peripheral wall 3, and an air channel 5. The opening 6 of the air channel 5 is blocked by a substrate 7, and an air discharge hole 12 is formed in the substrate 7. When the spindle-shaped outside surface 10 of the bottom wall 2 of the pad 1 is pushed to a print 13, the air in the air channel 5 is discharged from the air discharge hole 12 of the substrate 7 through the opening 6, so that the spindle-shaped outside surface 10 of the bottom wall 2 can easily be deformed in the entire circumference on average as compared with the base end side outside surface 11 of the peripheral wall 3 of the pad 1. The hanging part of the pad 1 is pushed to the side 15 of the print 13, and the ink of the pad 1 is transferred to the whole side 15 of the print 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pad member suitable for use in a transfer device of a pad printing machine that can transfer ink of a pad not only to the surface of a printing material but also to a side surface.

  Conventionally, the pad 1 shown in FIGS. 1 (b) and 2 (b) is integrally formed of silicon rubber and includes a cylindrical portion 17 and a conical portion 18, and the substrate 7 is bonded to the end surface portion 4 of the cylindrical portion 17. It is attached by an agent (not shown). In pad printing, after the pad 1 is lowered toward the substrate 13 from the standby state of FIG. 3B, the ink is attached to the outer surface of the pad 1 by the intaglio, and then FIG. 4B and FIG. As shown in (b), the outer surface of the pad 1 is pressed against the substrate 13, and the pad 1 is deformed so that the drooping portion 16 is pressed against the side surface 15 of the substrate 13.

  However, since the pad 1 is not easily deformed, the ink of the pad 1 is transferred only to the upper half of the side surface 15 of the substrate 13 and is not transferred to the lower half of the side surface 15 as shown in FIG. Part tends to remain.

  The present invention provides a pad member that can easily print the ink of the pad not only on the surface but also on the side surface of various forms of prints by improving the form of the pad. The purpose is to provide.

  Drawing of postscript embodiment (1st Embodiment shown in FIG. 1 (a), FIG. 2 (a), FIG. 3 (a), FIG. 4 (a), FIG. 5 (a), and FIG. 6 (a)), FIG. The present invention will be described with reference to the second embodiment).

  The pad member according to the invention of claim 1 (corresponding to the first embodiment) is attached to the pad 1 that is pressed against the substrate 13 and transferred to the substrate 13 in the transfer device of the pad printing machine, and the pad 1 is attached. The pad 1 is provided with a cavity 5 having an opening 6 closed by the substrate 7 and an air discharge hole 12 communicating with the opening 6 of the cavity 5. For example, the cavity 5 is surrounded by the inner surfaces 2 a and 3 a of the pad 1 along the outer surface 8 of the pad 1 and the inner surface 7 a of the substrate 7.

In the first aspect of the invention, when the pad 1 is pressed against the substrate 13, the air in the cavity 5 is discharged from the air discharge hole 12 through the opening 6 and the pad 1 is easily deformed.
In the invention of claim 2 (corresponding to the first embodiment) based on the invention of claim 1, the pad 1 includes a bottom wall 2, a peripheral wall 3 provided on an outer periphery of the bottom wall 2, and a bottom wall thereof. 2, a cavity 5 surrounded by an inner surface 3 a of the peripheral wall 3 and an inner surface 7 a of the substrate 7, and an opening 6 of the cavity 5 is formed on the inner surface 7 a of the substrate 7 inside the end surface portion 4 of the peripheral wall 3. It is formed facing. In the invention of claim 2, when the bottom wall 2 of the pad 1 is pressed against the substrate 13, the air in the cavity 5 is discharged from the air discharge hole 12 through the opening 6 and the bottom wall 2 of the pad 1 is easily deformed.

  In the invention of claim 3 (corresponding to the first embodiment) based on the invention of claim 1, the outer surface 8 of the pad 1 has a pad end surface portion 4 having an opening 6 facing the inner surface 7a of the substrate 7 and the pad. Of the outer surface 8 of the pad 1, the weight-shaped outer surface 10 extending from the pad top portion 9 toward the pad end surface portion 4 passes through the pad top portion 9. A circular shape centering on the center line 1a is formed, and the radius R10 with respect to the center line 1a is inclined so as to gradually increase from the pad top portion 9 toward the pad end surface portion 4 side. In the invention of claim 3, when the weight-like outer surface 10 of the pad 1 is pressed against the substrate 13, the air in the cavity 5 is discharged from the air discharge hole 12 through the opening 6 and the weight-like outer surface 10 of the pad 1 is easily deformed.

  In the invention of claim 4 (corresponding to the first embodiment) based on the invention of claim 3, of the outer surface 8 of the pad 1, a base end formed between the weight-like outer surface 10 and the substrate 7 The side outer surface 11 has a circular shape centering on a center line 1 a passing through the pad top 9, and a radius R 11 with respect to the center line 1 a is set larger than a radius R 10 of the weight-shaped outer surface 10. In the invention of claim 4, when the weight-like outer surface 10 of the pad 1 is pressed against the substrate 13, the weight-like outer surface 10 of the pad 1 is more easily deformed than the base-end-side outer surface 11 of the pad 1.

  In the invention of claim 5 (corresponding to the first embodiment) premised on the invention of claim 3 or claim 4 (corresponding to the first embodiment), the outer surface 8 of the pad 1 in a cross section 1b orthogonal to the center line 1a passing through the pad top 9. And the thickness T between the inner surfaces 2a and 3a of the cavity 5 in the pad 1 is set to be constant over the entire circumference around the center line 1a. In the invention of claim 5, when the weight-like outer surface 10 of the pad 1 is pressed against the substrate 13, the weight-like outer surface 10 of the pad 1 is easily deformed on the entire circumference on average.

  In the invention of claim 6 (corresponding to the first embodiment) based on the invention of any one of claims 1 to 5, the air discharge hole 12 is, for example, a center passing through the pad top portion 9. It is formed on the substrate 7 on the line 1a. In the invention of claim 6, not only is the air discharge hole 12 easily formed, but the air in the cavity 5 is easily discharged through the opening 6 from the air discharge hole 12 in the substrate 7 facing the opening 6 of the cavity 5.

  In the pad member according to the invention of claim 7 (corresponding to the second embodiment), the pad 20 that is pressed against the substrate 24 by the transfer device of the pad printing machine and transfers the ink to the substrate 24 is not provided. Through-holes 23 opened in both side surfaces 21 of the pad 20 in the direction Y intersecting the pressing direction Z are provided.

  In the invention of claim 7, when the pad 20 is pressed against the substrate 24, the pad 20 is easily deformed by the through hole 23 of the pad 20.

  In the present invention, the pad 1 is easily deformed by the cavity 5 or the through hole 23 provided in the pad 1, and the ink of the pad 1 can be easily transferred to various forms of the substrate 13, for example, the side surface 15 of the substrate 13. And good printing can be performed.

FIG. 1A, FIG. 2A, FIG. 3A, FIG. 4A, FIG. 5A, and FIG. 6A are shown below for the pad member according to the first embodiment of the present invention. The description will be given with reference.
A pad 1 shown in FIGS. 1A and 2A is integrally formed of silicon rubber, and has a substantially conical bottom wall 2 and a substantially cylindrical peripheral wall 3 formed on the outer periphery of the bottom wall 2. And a cavity 5 opened upward by an opening 6 at an end surface portion 4 of the peripheral wall 3. A substrate 7 is attached to the end surface portion 4 with an adhesive (not shown), and the opening 6 is closed by the substrate 7. The cavity 5 is surrounded by the inner surface 2 a of the bottom wall 2, the inner surface 3 a of the peripheral wall 3, and the inner surface 7 a of the substrate 7. The outer surface 8 of the pad 1 is formed between the end surface portion 4 of the peripheral wall 3 and the top portion 9 of the bottom wall 2 on the opposite side to the end surface portion 4, and the weight-shaped outer surface 10 extending from the top portion 9 toward the end surface portion 4 side. (Printing surface) and a base end-side outer surface 11 formed between the spindle-shaped outer surface 10 and the substrate 7. The spindle-shaped outer surface 10 has a circular shape centered on the center line 1a passing through the top 9, and is inclined so that the radius R10 with respect to the center line 1a gradually increases from the top 9 toward the end surface 4 side. Yes. The outer surface 11 on the base end side has a circular shape centered on the center line 1 a passing through the top 9, and a radius R 11 with respect to the center line 1 a is set larger than a radius R 10 of the weight-shaped outer surface 10. The thickness T between the outer surface 8 and the inner surface of the cavity 5 along the outer surface 8 (the inner surface 2a of the bottom wall 2 and the inner surface 3a of the peripheral wall 3) in the cross section 1b orthogonal to the center line 1a passing through the top 9 is It is set constant all around the center line 1a. An air discharge hole 12 communicating with the opening 6 of the cavity 5 is formed in the substrate 7 on the center line 1 a passing through the top 9.

  In the printed material 13 shown in FIG. 3A, a circular side surface 15 (printed surface) is formed on the entire outer periphery of the recess 14. In the state shown in FIG. 3A, the pad 1 is at a standby position separated from the substrate 13 in a transfer device of a conventionally known pad printing machine. In the state shown in FIG. 4A, ink is attached to the outer surface 8 of the pad 1 by the intaglio plate while the pad 1 is descending in the pressing direction along the center line 1 a from the standby position, and the pad 1 is placed in the recess 14 of the substrate 13. 1 top 9 abuts. In the state shown in FIG. 5A, the pad 1 further descends in this pressing direction and stops at the printing position, the bottom wall 2 of the pad 1 is pressed against the substrate 13, and the pad 1 is deformed and droops. The portion 16 is pressed against the side surface 15 of the substrate 13. After the printing is completed, the pad 1 returns from the printing position to the standby position. Accordingly, as shown in FIG. 6A, the ink on the pad 1 is transferred to the entire side surface 15 of the substrate 13.

Next, the pad member concerning 2nd Embodiment of this invention is demonstrated with reference to FIG.
The columnar pad 20 attached to the lower side of the substrate 19 has a curved shape extending in the front-rear direction X between both end surfaces 21 (side surfaces) in the front-rear direction X orthogonal to the up-down direction Z and the left-right direction Y. It has a printing surface 22, and a through hole 23 is provided between the both end surfaces 21 so as to be opened. In the middle of the pad 20 descending in the pressing direction (vertical direction Z) from the standby position separated from the surface 25 of the substrate 24, ink is attached to the printing surface 22 of the pad 20, and the pad 20 is further pressed in the pressing direction (vertical direction Z). And the printing surface 22 of the pad 20 is pressed against the entire surface 25 of the substrate 24, and the pad 20 is deformed to cause the printing surface 22 of the drooping portion (not shown) to move. It is pressed against each side surface 26 of the substrate 24. After the printing is completed, the pad 20 returns from the printing position to the standby position. Therefore, the ink of the pad 20 is not only transferred to the entire surface 25 of the substrate 24, but also transferred to the entire side surfaces 26 of the substrate 24 in the left-right direction Y. The ink of the pad 20 is transferred only to the corners between the surface 25 and the side surfaces 26 on both sides 26 in the front-rear direction X of the substrate 24 as in the prior art.

This embodiment has the following effects.
* In the first embodiment, when the weight-like outer surface 10 of the bottom wall 2 of the pad 1 is pressed against the substrate 13, the air in the cavity 5 is discharged from the air discharge hole 12 of the substrate 7 through the opening 6 and the peripheral wall of the pad 1. 3, the weight-like outer surface 10 of the bottom wall 2 is more easily deformed on the entire circumference than the base-end-side outer surface 11, and the ink of the pad 1 can be easily transferred to the side surface 15 of the substrate 13 in various forms. Good printing can be performed.

* In the first embodiment, since the cavity 5 is opened upward by the opening 6 at the end surface portion 4 of the peripheral wall 3, the cavity 5 can be easily formed in the pad 1.
* In the first embodiment, the opening 6 of the cavity 5 can be easily closed by the existing substrate 7, and not only the air discharge hole 12 can be easily formed in the substrate 7, but also the air discharge. The air in the cavity 5 can be easily discharged from the hole 12 through the opening 6.

  * In the second embodiment, the pad 20 is easily deformed by the through-hole 23 of the pad 20, and not only the ink of the pad 20 can be transferred to the surface 25 of the substrate 24, but also the side surface 26 of the substrate 24. Can also be easily transferred.

For example, the following embodiment may be configured as follows.
In the pad 1 of the first embodiment, the form of the outer surface 8 and the form of the cavity 5 can be changed to various forms according to the printing surface of the substrate 13. At this time, since the cavity 5 is present in the pad 1, the pad 1 is easily deformed, and good printing can be performed on various forms of the substrate 13.

  A plurality of air discharge holes 12 of the first embodiment may be provided in the substrate 7 or may be provided in the substrate 7 at a point other than the center line 1a, for example, at a point-symmetrical position with the center line 1a as the center. Moreover, you may provide in the point-symmetrical position centering on the centerline 1a on the base end side outer surface 11 in the vicinity of the end surface part 4 of the surrounding wall 3, for example.

(A) is a perspective view which shows the pad of the pad member concerning 1st Embodiment, (b) is a perspective view which shows the pad in the conventional pad member. (A) is sectional drawing which shows the pad member concerning 1st Embodiment, (b) is sectional drawing which shows the conventional pad member. (A) is a perspective view which shows the state just before printing to a to-be-printed material by the pad member concerning 1st Embodiment, (b) is a perspective view which shows the state just before printing to a to-be-printed material by the conventional pad member. FIG. (A) is sectional drawing which shows the state just before printing to a to-be-printed material by the pad member concerning 1st Embodiment, (b) is a cross section which shows the state just before printing to a to-be-printed material by the conventional pad member. FIG. (A) is sectional drawing which shows the state immediately after printing to a to-be-printed material by the pad member concerning 1st Embodiment, (b) is the state immediately after printing to the to-be-printed material by the conventional pad member. It is sectional drawing shown. (A) is a fragmentary perspective view which shows the to-be-printed material printed with the pad member concerning 1st Embodiment, (b) is a fragmentary perspective view which shows the to-be-printed material printed with the conventional pad member. (A) (b) is a perspective view which shows the state just before printing on a to-be-printed material by the pad member concerning 2nd Embodiment, respectively, (c) was printed by the pad member concerning 2nd Embodiment. It is a perspective view which shows a to-be-printed material.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Pad, 1a ... Center line, 1b ... Section, 2 ... Bottom wall of pad, 2a ... Inner surface of bottom wall, 3 ... Perimeter wall of pad, 3a ... Inner surface of peripheral wall, 4 ... End surface part of pad, 5 ... Cavity, 6 ... Cavity opening, 7 ... Substrate, 7a ... Inner surface of substrate, 8 ... Pad outer surface, 9 ... Pad top, 10 ... Pad-shaped outer surface, 11 ... Pad proximal outer surface, 12 ... Air Ejection hole, 13 ... substrate, 20 ... pad, 21 ... side, 23 ... through hole, 24 ... substrate.

Claims (7)

A pad printing machine includes a pad that is pressed against a substrate to transfer ink to the substrate and a substrate to which the pad is attached, and the pad forms a cavity having an opening closed by the substrate. And a pad member in a transfer device of a pad printing machine, wherein an air discharge hole communicating with the opening of the cavity is provided. The pad includes a bottom wall, a peripheral wall provided on an outer periphery of the bottom wall, and a cavity surrounded by an inner surface of the bottom wall, an inner surface of the peripheral wall, and an inner surface of the substrate, and an opening of the cavity is formed in the peripheral wall. 2. The pad member in a transfer device of a pad printing machine according to claim 1, wherein the pad member is formed so as to face the inner surface of the substrate inside the end surface portion. The outer surface of the pad is formed between a pad end surface portion having an opening facing the inner surface of the substrate and a pad top portion on the opposite side of the pad end surface portion. The weight-shaped outer surface extending to the center is circular with the center line passing through the top of the pad as the center, and is inclined so that the radius with respect to the center line gradually increases from the pad top to the pad end surface. The pad member in the transfer device of the pad printing machine according to claim 1. Of the outer surfaces of the pad, the proximal outer surface formed between the weight-shaped outer surface and the substrate has a circular shape centering on a center line passing through the top of the pad, and a radius with respect to the center line is 4. The pad member in a transfer device for a pad printing machine according to claim 3, wherein the pad member is set to be larger than the radius of the conical outer surface. The thickness between the outer surface of the pad and the inner surface of the cavity in the pad in a cross section orthogonal to the center line passing through the top of the pad is set to be constant over the entire circumference centering on the center line. The pad member in the transfer device of the pad printing machine according to claim 3 or 4. The pad member in the transfer device of the pad printing machine according to claim 1, wherein the air discharge hole is formed in the substrate. The pad which is pressed against the printing material in the transfer device of the pad printing machine and has the ink transferred to the printing material is provided with through-holes opened on both sides of the pad in a direction crossing the pressing direction of the pad. The pad member in the transfer device of the pad printing machine.

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