JPS5921017Y2 - Stamp pad - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stamp stand, and more particularly to a stamp stand that is used with the ink application surface facing downward and the ink injection port facing upward.

A stamp pad used with the ink-applied surface facing downward is suitable for automatic printing machines, etc., and this automatic printing machine is known to be used for printing large quantities on food packs and the like.

This printing machine uses quick-drying ink to speed up the processing of large amounts of ink, and even though a large amount of ink is concentrated on the ink-dispensing surface of the stamp pad due to gravity, Since it remains open during work, a large amount of ink evaporates on the coating surface, limiting the number of consecutive treatments.

Therefore, an object of the present invention is to provide a stamp pad that has high ink water retention even when using quick-drying ink.

In order to achieve this object, the present invention provides a stamp pad having an ink application surface on the bottom and an ink injection port on the top. an ink pad in which a sponge body and a third sponge body whose lower surface is covered with cloth are laminated;
A plurality of protrusions that press the first sponge body are provided at intervals from the top surface of the housing of the stamp pad to form a space between the top surface of the housing and the first sponge body, and a space is formed between the housing top surface and the first sponge body. To provide a stamp pad, wherein the first sponge body is provided with a plurality of vertical through holes at positions different from the positions where the projections abut.

With this structure, the ink that enters from the injection port spreads into the space, and the ink is held uniformly over the entire pad, and the underside of the third sponge body, which serves as the ink application surface, always has an appropriate amount without any sagging. The ink oozes out, preventing a large amount of ink from evaporating.

According to an embodiment of the present invention, the sponge body of the pad is preferably made of natural rubber, and by arranging a nylon gauze on the lower surface of the third pad, the amount of ink can be further made appropriate.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a stamp pad 1 has a main body separated from a housing 2 and an ink pad 3, and a cover 4 that covers an ink application surface when the stamp pad is not used.

When in use, this cover is removed and used with the ink-applied surface facing downward as shown in FIG.

The ink pad 3 is mainly made of a laminate of sponge bodies.

That is, in order from the top, a first sponge layer 6 whose upper surface is covered with cloth 5, a second sponge layer 7, and a cloth 8 on the lower surface.
The third sponge body layer 9 coated with

Preferably, the first sponge body layer 6 and the third sponge body layer 8 are sponge bodies provided with slightly coarse open cells, and the second sponge body is a sponge body provided with the first and third sponge bodies. Use something with finer eyes than the body.

As a result, the first and third sponge layers have higher downward fluidity of ink than the second sponge layer, whereas the second sponge layer has a higher ink water retention ability than the first and third sponge layers. It is higher than the third tier.

However, there is no restriction on the relationship between the roughness of each layer as long as the ink water retention and fluidity are obtained as a whole in these sponge layers.

Through experiments, it has been found that these sponge bodies are preferably made of natural rubber, but are not limited to this as long as desired fluidity and water retention properties are obtained.

The cloths 5 and 8 attached to the upper and lower surfaces of the first sponge layer 6 and the third sponge layer 9, respectively, may be made of silk or a similar material and have a very thin thickness, so as to spread the ink laterally. Anything that affects you is good.

In the experiment, the first sponge body and the third sponge body were
Good results were obtained using the same silk-processed spongy natural rubber.

In this case, the thickness of each layer is 3 mm for the first layer 6 and 3 mm for the second layer 6.
The thickness of layer 7 was chosen to be 7 mm, and the thickness of the third layer was chosen to be 6 mm.
We do not intend to limit ourselves to these numbers.

It is preferable to further provide a coarse cloth 10 (for example, gauze) made of, for example, nylon, which does not have water absorbency, on the lower surface of the cloth 8 on the lower surface of the third sponge layer 9, that is, the ink-applied surface.

As a result, the amount of ink that oozes out onto the ink-applied surface becomes more appropriate.

The housing 2 has a frame-shaped pad holder 11 at the bottom,
This is removable so that the ink pad 3 can be loaded into or removed from the housing.

An ink inlet 12 is provided on the upper surface of the housing 2, and a cap 13 is screwed onto the ink inlet, and the cap 13 is removed when ink is supplied.

On the inner side of the upper surface of the housing 2, there is a protrusion 14 whose tip presses the upper cloth 5 of the first sponge layer 6 of the ink pad 3.
A plurality of them are provided spaced apart from each other.

This protrusion 14 forms a space 15 between the upper surface of the housing 2 and the ink pad 3, and thereby,
The ink that enters from the injection port 12 can spread widely on the cloth 5 in the lateral direction.

Although this space height was set to 5 mm during the experiment, it is not intended to be limited to this.

Furthermore, as is clear from FIG. 1, a plurality of through holes 16 are formed in the first sponge layer 6 at positions different from the positions where the projections 14 mentioned above come into contact.

This through-hole promotes the downward flow of the ink in the first layer, and its diameter may be small, or at most 1.
mm1H degrees.

Further, although this through hole also penetrates the cloth 5 of the first sponge layer, it does not penetrate the second sponge layer 7.

In FIG. 2, the positions of through holes are indicated by x marks, the positions of protrusions are indicated by ○ marks, and the ink injection ports are indicated by ◎ marks.

As is clear from this figure, the through holes 16 are provided near the ink inlet 12, and each through hole is connected to each protrusion 14.
It is preferable that it be provided between the two.

When ink is injected into the stamp pad of the present invention, the ink spreads widely in the horizontal direction due to the space 15, and the cloth 5 of the first sponge body layer 6 promotes the spread, so that the ink that spreads uniformly spreads in the horizontal direction. It passes through the first sponge layer 6 or through the through holes 16 and is absorbed into the second sponge layer 7 with a substantially uniform spread.

An appropriate amount of ink flows down from the second sponge body layer 7 to the third sponge body 9, and the ink oozes uniformly over the entire surface of the lower cloth 8.

If gauze cloth 10 is provided, the amount of ink will be even more appropriate.

Therefore, according to the present invention, the ink does not splatter on the bottom surface of the ink pad of the stamp pad, and the appropriate amount of ink oozes out, ensuring that the amount of ink to the print head is not too much or too little, and it dries quickly. Even if ink is used, the amount of ink exposed to the coated surface is small, so the amount of evaporation is drastically reduced.
A large amount of printing can be performed thousands of times.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view of a stamp pad according to the present invention, and FIG. 2 is an explanatory diagram showing the relative positional relationship between the protrusion and the through hole. DESCRIPTION OF SYMBOLS 1...Stamp stand, 2...Housing, 3...Ink pad, 4...Cover, 5...First sponge body layer Top cloth, 6...
... first sponge body layer, 7... second sponge body layer, 8... bottom cloth of third sponge body layer, 9.
...Third sponge body layer, 10... Gauze, 1
1... Ink pad holder, 12... Ink inlet, 13... Cap, 14...
...Protrusion, 15...Space, 16...Through hole.

Claims (1)

[Claims for Utility Model Registration] 1. In a stamp stand used with the ink application surface facing downward and the ink injection port facing upward, from the top, there are provided, in order from the top, a first sponge body whose upper surface is covered with a cloth, and a second sponge body. and a third sponge body whose lower surface is covered with cloth, and a plurality of protrusions that press the first sponge body are spaced apart from each other from the upper surface of the housing of the stamp pad. A space is formed between the upper surface of the housing and the first sponge body, and the first sponge body has a plurality of vertical penetrations at positions different from the positions where the protrusions abut. A stamp pad characterized by having holes. 2. The stamp pad according to claim 1, wherein the sponge body of the ink pad is made of natural rubber. 3. The stamp pad according to claim 1, wherein a nylon gauze is further provided on the lower surface of at least the third sponge body of the ink pad.