JPH08108607A - Seal - Google Patents

Abstract

PURPOSE: To enable reliable outflow of high viscous gelled ink, by a a method wherein a joint with a printing body on the front end is provided so that longitudinal movement is performed to a movable shaft by pressing or releasing a seal surface and the first valve chest fitted closely into the joint by a valve body on the rear of the printing body and the second valve chest fitted closely into a top hole of the movable shaft on the rear of the valve body are provided. CONSTITUTION: When high viscous gelatinized ink is filled up to value chambers 9, 22 and pressure is applied to a seal surface 33 under a state wherein a plug body or a greasy follower 43 which follows consumption of the ink and is slidable is provided on its rear end, a joint 11 is moved backward by dimensions L to a movable shaft 3. At that time, inner pressure within a valve chest 9 is raised, valve body 23 is pushed up, the ink flows into the valve chest 22 and made to flow out forcibly to the printing body 32 by passing through an inflow hole 19, gap 21 and ink derivative 34. When pressing is released, the joint 11 is restored to the original place to a bushing 2 and the inside of the valve chest is decompressed. At this time, a valve body 26 is pushed up and the ink flows into the valve chest 9 through a leading hole 10. The ink is pumed up in order by pressing and releasing as follows.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stamp which is made to flow a high-viscosity ink to a printing surface by utilizing a pressure applied by pressing the printing surface.

[0002]

2. Description of the Related Art Conventionally, there is known a stamp which uses a rubber printing body having a large number of continuous pores capable of storing a large amount of ink and which does not require the ink to be adhered each time it is used.
It is also known that a printed material is formed by firing a material such as ceramics, glass ceramics, or metal into a porous material having innumerable continuous pores.

[0003]

As described above, since the rubber printing body itself has elasticity, it has the ability to be deformed by the pressure at the time of imprinting and eject ink, but ceramics,
Since a printing body such as a metal is a rigid body itself, the ink is guided by a capillary phenomenon. Therefore, a stamp using a printing body made of ceramics, metal or the like has a more unstable ink outflow than a rubber stamp, and has a poor ability to follow the ink particularly in continuous printing. In addition, the ink for a seal stamp using the above-mentioned porous printing body has a lower viscosity and a slower drying time than ink such as red ink so as not to cause clogging of the printing body. In addition, there is a drawback that after printing on the paper surface, it easily bleeds. Therefore, an object of the present invention is to solve the above-mentioned drawbacks and to provide a seal stamp having a seal imprint that is free from bleeding, dries quickly, and has a thick imprint such as a seal made of red ink.

[0004]

A seal stamp of the present invention devised to achieve the above object is a joint having a print body at the front end with respect to a movable shaft, and is pressed back and forth within a proper range by pressing and releasing the seal surface. A first valve chamber, which is provided so as to move, is fitted in the joint behind the print body by a spring so that the valve body normally abuts on the receiving seat and is tightly fitted. Further, behind the valve body, the first valve chamber is provided. A second valve chamber is provided in the inner hole at the tip end by a spring so that the valve element is always in close contact with the receiving seat. The second valve chamber is communicated with the guide hole further rearward of the valve element to form a highly viscous gel ink. The print body is formed of a material having innumerable continuous pores capable of absorbing ink, and the rear end of the ink closely contacts the inner wall of the print cylinder and follows the consumption of ink. A stopper or a grease-like follower is provided, and the rear end of the barrel is connected to the outside air. Tail plug is provided having a vent hole formed by. The printed body is made of a material such as rubber, resin, ceramics or metal.

[0005]

1 and 2 show an embodiment of the present invention. First, as shown in the figure, the seal stamp 1 has a joint 11 connected to a front shaft portion 4 ahead of the movable shaft 3 so that the joint 11 can move axially. The joint 11 has a step portion 18 at the tip of the inner hole 15 so that the inflow hole 1
9 is formed. Further, a radial or disc-shaped gap 21 is formed on the tip end surface of the joint 11 so as to communicate with the inflow hole 19, and a resilient ink derivative 34 having a large number of pores 35 is arranged on the front surface thereof. Further, a printing body 32 made of porous ceramics, glass ceramics, metal or the like having innumerable continuous pores is placed on the front surface thereof, and the cover 36 covers the ink derivative 34 and the printing body 32 in a closely packed state. Then, the cover 36 is fixed to the outer peripheral portion of the joint 11 on the front side. By the way, the ink derivative 34 is closely packed in the cover 36 to enhance the pressurizing effect with the valve chamber, which will be described later.
Cushion effect at the time of marking, printing body 3 due to deformation at the time of marking
2 has the effect of supplying ink to the ink, but is not essential in the configuration. It is also possible to combine the ink having a higher viscosity with the printing body made of rubber.

Further, a valve element 23 is disposed behind the inflow hole 19 together with a bush 24 having a receiving seat 25 for closely contacting its tapered surface. The bush 24 is fixed to the inner hole 15 of the joint 11 and A spring 29 is urged between the stepped portion 18 at the tip of the hole and the front surface of the valve body 23 so that the valve body 23 is movable forward and the first valve is provided between the valve body 23 and the ink guide 34. A chamber 22 is formed.

Further, an inner hole 17 is provided at the rear end of the joint 11, a step portion 20 is provided and an inner hole 16 having a slightly smaller diameter is provided in front of the step portion 20, and a step portion 12 is further provided in front of the inner hole 17. A small diameter inner hole 15 is provided. A window portion 13 is provided on the side surface of the joint 11 located near the rear end of the inner hole 16 so as to penetrate the inner hole 16. Further, the front shaft portion 4 in front of the movable shaft 3 is circumferentially provided with a seal ring 27, 28 at a required position on the outer peripheral portion.
Is provided, and a protrusion-shaped locking portion 4a is formed behind the window 13 in correspondence with the window 13.

The front end portion 4 of the movable shaft 3 is fitted into the inner hole 16 of the joint 11 with the rear end of the return spring 31 abutting against the step portion 5 behind the locking portion 4a. Is brought into contact with the step portion 20 and the locking portion 4
a is fitted into the window portion 13 by mutual elastic deformation so that the locking portion 4
The rear end of a is locked to the stepped portion 14 at the rear end of the window portion, and the joint 11 is prevented from slipping out of the movable shaft 3 so as to be movable back and forth. At that time, the joint 11 can be retracted by the gap L while the step portion 12 is in contact with the tip of the front shaft portion 4, and the front shaft portion 4 is slidable in the inner holes 16 while the seal rings 27 and 28 are slidable. Close to. The movable shaft 3 and the joint 11 are configured as a synthetic resin molded product depending on the mutual connection conditions, but there are various connection methods, and the material is not limited.

By the way, when the movable shaft 3 is connected to the joint 11, the tapered surface of the valve body 26 is brought into close contact with the tapered receiving seat 8 provided in the front hole portion 7 of the movable shaft 3, and the bush 24 is also used. A spring 30 is urged between the rear end and the front end of the valve body 26, and a second valve chamber 9 is formed between the valve body 23 and the valve body 26. By the way, in the above embodiment, the first and second valve bodies are provided in a tapered shape, but it is also possible to provide the valve bodies in a ball shape so as to be in close contact with the receiving seat.

Further, the movable shaft 3 has a guide hole 10 behind the valve body 26.
The rear part communicates with the ink containing portion 6. Further, a flange portion 37 is formed on the rear side of the movable shaft 3 and a shaft portion 38 is formed on the rear side thereof. Further, an inclined protrusion 40 is formed at the rear end of the shaft portion 38.

By the way, the shaft cylinder 2 has a thin-walled plug wall 39 formed in the inner hole portion on the front end side, and the inner hole behind the inner wall portion serves as the ink containing portion 6 and is filled with the highly viscous gel ink 46. .
Further, at the rear end of the ink 46, there is provided a plug body 44 or a grease-like follower 43 which has a close contact portion 45 which is in close contact with the inner peripheral wall of the shaft cylinder 2 and can be slid following the consumption of ink. In the embodiment, the resin stopper 44 having substantially the same specific gravity is immersed in the follower 43. Plug 4
4 or follower 43 is originally provided individually, but the mechanism of ink backflow prevention and follow-up requires an extremely delicate relationship, and the dimensional accuracy of the close contact portion 45 of the stopper 44 has a variation during mass production. Difficult to control. Further, the grease-like follower 43 has a drawback that it is easily deformed by a drop impact or the like. The above embodiment is excellent as a method for solving each of the drawbacks.

A tail plug having a vent hole 42 communicating with the outside air is crimped to the rear end of the barrel 2. The shaft cylinder 2 configured as described above serves as an ink cartridge, and is attached to the shaft portion 38 of the movable shaft 3 in a state of piercing the stopper wall 39. It should be noted that there are many mounting modes and the invention is not limited to the mode of the embodiment.

[0013]

First, in FIG. 1, the ink is filled up to the valve chambers 9 and 22. When the pressure is applied to the stamp surface 33 in this state, the joint 11 retracts by the L dimension with respect to the movable shaft 3. At that time, the internal pressure in the valve chamber 9 rises to push up the valve body 23 and the ink flows into the valve chamber 22, and the ink is forcibly discharged to the printing body 32 through the inflow hole 19, the gap 21 and the ink derivative 34. When the pressing is released, the joint 11 returns to the shaft cylinder 2 and the pressure inside the valve chamber 9 is reduced. At that time, the valve body 26 is pushed up and the ink flows into the valve chamber 9 from the guide hole 10. Less than,
By repeatedly pressing and releasing the printing surface 33 for each imprint, the ink is sequentially pumped, and even if it is a highly viscous gel ink, it can be reliably supplied to the printing surface 33.
It should be noted that it is desirable to appropriately set the space of the valve chamber, the movable size L, and the like in accordance with the amount of ink consumed in one printing. Needless to say, the marking mechanism of the present application is established even if the ink is not sticky to gel ink.

[0014]

The structure and operation of the seal stamp of the present invention are as described above, and the ink is pumped by pressing and releasing the stamp surface, so that the highly viscous gel ink can surely flow out without bleeding. In addition, it is possible to select an ink having a seal imprint having a thickness like red ink, which dries quickly. or,
If the ink supply amount is set to the transfer amount of the imprint, the imprint will always be constant, and the imprint will become thin with the ink consumption due to imprinting like a conventional seal that occludes ink, and the ink will follow the continuous imprint. There is no fault of thinning without doing. Further, if the ink containing portion of the shaft cylinder is made transparent, it is possible to expect an effect that the remaining amount of ink is known.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an entire stamp that is an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of a seal stamp that is an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seal 2 Shaft 3 Movable shaft 4 Front shaft part 4a Locking part 5 Step part 6 Ink storage part 7 Hole part 8 Receiving seat 9 Valve chamber 10 Guide hole 11 Joint 12 Step part 13 Window part 14 Step part 15 Inner hole 16 Inner hole 17 Inner hole 18 Step portion 19 Inflow hole 20 Step portion 21 Gap 22 Valve chamber 23 Valve body 24 Bush 25 Receiving seat 26 Valve body 27 Seal ring 28 Seal ring 29 Spring 30 Spring 31 Return spring 32 Printing body 33 Stamp face 34 Ink Derivative 35 Pore 36 Cover 37 Collar 38 Shaft 39 Plug wall 40 Projection 41 Tail plug 42 Vent 43 43 Follower 44 Plug 45 Close contact 46 Ink

Claims (4)

[Claims] 1. A joint having a print body at its front end with respect to a movable shaft is provided so as to move back and forth within an appropriate range by pressing and releasing the stamp face, and a valve body is normally provided behind the print body by a spring in the joint. A first valve chamber is provided which abuts against the seat and is tightly fitted thereto. Further, the valve body is always abutted against the seat and tightly fitted to the inner bore of the distal end of the movable shaft behind the valve body. A second valve chamber is provided, and a shaft cylinder that communicates with the guide hole and accommodates ink is provided further behind the valve body, and the printing body has a number of continuous pores capable of storing ink. And a follower in the form of a grease or a grease-like follower that is in close contact with the inner wall of the barrel and follows the exhaustion of the ink, and is connected to the outside air at the rear end of the barrel. A stamp which is provided with a tail plug having pores. 2. A rear end of the ink is filled with a grease-like follower that is in close contact with the inner wall of the shaft cylinder and follows the consumption of the ink, and a resin stopper having substantially the same specific gravity is immersed in the follower. The seal stamp according to claim 1, wherein the seal stamp is used. 3. The stamp according to claim 1, wherein the stamping operation is configured to forcibly supply the same amount of ink as that consumed in one stamping operation. 4. An ink derivative containing a highly viscous gel-like ink and made of an elastic body having innumerable pores between the rear end of the printing body and the tip of the joint, and the printing body. The seal stamp according to claim 1, wherein the seal stamp is formed of a material such as ceramics or metal having innumerable continuous pores.