JPH05212949A - Rubber seal material and manufacturing device and manufacture of rubber seal - Google Patents

Abstract

PURPOSE:To manufacture a rubber seal at favorable productivity and a low cost, by a method wherein a cushioning layer whose end face is flat is provided on a seal main body, on which a peeling layer comprised of rubber having the glass transition temperature higher than -50 deg.C is fixed by an adhesive agent. CONSTITUTION:An engraving machine 1 possesses an L-shaped pedestal part 2 on which an X-Y table 4 is arranged through an elevating driving apparatus 3, the tip of the table 4 is fitted with a pair of seal material fixing jigs 6, through which a rubber seal material 8 is fixed by placing between the jigs 6. A cooling machine 20 possesses a casing 22 holding a vessel 24 of a cooling medium, the inside of which is provided with a switch 30 and driving apparatus 32. The vessel 24 of the cooling medium is obtained by filling the same with the cooling medium such as various fluorocarbons evaporating under the normal temperature and normal pressure and when a valve button 26 is pushed down, the cooling agent C is injected to the seal material 8 through a nozzles 28. The switch 30 abuts against the side of the vessel 24 of the cooling agent, when the vessel 24 of the cooling agent is within the casing 22, the switch is turned ON and when the same is absent, the switch is turned OFF.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber stamp material for engraving a rubber stamp material while cooling to form a printed image, a rubber stamp manufacturing apparatus and a manufacturing method.

[0002]

2. Description of the Related Art Conventionally, the following steps have been taken when manufacturing a rubber sheet. First, in a dark room, use a typesetting machine to create a letterpress for rubber stamps, attach this letterpress to a rubber stamping base for calibration, and then use a plate-making camera to stamp letters on the relief film. Record the image below.
Next, the letterpress resin is exposed and developed using the letterpress film to form a letterpress, and then the letterpress is used to form a mother die. Then, after the rubber stamp material softened by the mother die is press-molded, it is fixed to the base and made into a rubber sheet.

[0003]

However, in this method, the process is complicated, there are many equipments and facilities to be used, and the manufacturing cost is high, and the productivity is low. It took about 15 days and could not meet the sudden demand. In addition, there is a problem that it is necessary to secure a specialized technician because the technique of phototypesetting and letterpress is required.

When a stamp made of a hard material is used, recently, instead of the conventional manual engraving, automatic engraving by a rotary cutter is partially performed. Rubber engraving has never been attempted. When the present inventors engraved a rubber stamp material using this kind of automatic engraving device, the rubber stamp material elastically deformed and escaped from the rotary cutter, and a clear image was not obtained, which was impossible to carry out. It turned out to be.

The present invention has been made in view of the above circumstances, and provides a rubber stamp material, a rubber stamp manufacturing apparatus, and a manufacturing method capable of manufacturing a rubber stamp with high productivity, at low cost, and in a short time. Is an issue.

[0006]

A rubber stamp material according to the present invention comprises a stamp main body, a plastic or rubber cushion layer fixed to the stamp main body and having a flat end surface, and peeled by an adhesive on the cushion layer. The release layer is fixed as much as possible, and the release layer is formed of rubber having a glass transition temperature higher than −50 ° C. A protective film may be releasably adhered to the surface of the release layer.

On the other hand, the rubber stamp manufacturing apparatus of the present invention comprises a stamping member holding mechanism for removably fixing a rubber stamping member, and a cutter rotating unit for rotating a cutter arranged perpendicular to the stamping face of the rubber stamping member around its axis. A mechanism, a Z-direction moving mechanism that moves at least one of the printing material holding mechanism and the cutter rotation mechanism toward and away from the other, and at least one of the printing material holding mechanism and the cutter rotation mechanism
XY direction moving mechanism for moving in a plane direction orthogonal to the direction, and cooling for holding the coolant for cooling and for injecting the coolant from the nozzle to the rubber stamp fixed to the stamp holding mechanism via the on-off valve. A mechanism and an opening / closing mechanism for intermittently opening / closing the opening / closing valve are provided.

In this apparatus, the stamp face dimension input means for inputting the dimension information of the stamp face of the rubber stamp material, the image input means for inputting image information to be engraved on the stamp face, and the inputted dimension information and the image information are used. Boundary line calculating means for determining the engraving area in which the image on the stamp face is to be formed and calculating position data of the boundary line between these engraving area and the other blank area, and a portion other than the image in the engraving area Cutting data holding means in the engraving area for holding the cutting position data of
Based on the boundary line data holding unit that holds the position data of the boundary line and the cutting position data read from the cutting data holding unit in the engraving area, a portion other than the image is cut to the first depth in the engraving area. A second deeper than the first depth along the boundary line along the boundary line based on the boundary line position data read from the boundary line data holding unit.
The cutter rotation mechanism, the Z
A direction moving mechanism and a control means for controlling the XY direction moving mechanism may be further provided.

On the other hand, in the method for producing a rubber stamp of the present invention, a cushion layer made of plastic or rubber having a flat end surface is fixed to the stamp body, and the glass transition temperature is higher than -50 ° C on the cushion layer. After a release layer having a constant thickness made of rubber is peelably fixed by an adhesive, the boundary line between the engraving area where the image on the release layer is to be engraved and the other blank area while cooling the release layer. Along with cutting the peeling layer along with, the portion other than the image of the engraving area is cut and removed to a depth at which the peeling layer is not cut to form an image portion, and further peeling corresponding to the margin area along the boundary line. The layer is peeled from the cushion layer, and only the peeling layer in the engraved area in which the image portion is engraved is left on the cushion layer.

When carrying out the engraving, a protective film may be releasably fixed on the surface of the release layer, and the protective film on the image area may be removed after the engraving.

[0011]

In the present invention, a cooling agent is sprayed on a rubber stamp material, the peeling layer is cooled to a temperature lower than its glass transition point to be hardened and then cut, whereby the peeling layer is elastically deformed and the cutter. It is possible to prevent problems such as running away from the car and not being able to engrave accurately, and engraving can be done efficiently. Further, by intermittently injecting the cooling agent, the peeling layer can be cooled more uniformly than in the case of continuously injecting a small amount, and the total amount of the cooling agent can be reduced.

Further, the peeling layer is cut along the boundary line between the engraving area and the blank area on the peeling layer, and the portion other than the image of the engraving area is cut and removed to a depth at which the peeling layer is not cut. After forming the part, the peeling layer in the blank area is peeled from the cushion layer along the boundary line, and only the peeling layer in the engraved area in which the image portion is engraved is left on the cushion layer,
Limiting the relatively time-consuming engraving work to the engraving area only,
It is possible to reduce the time required to create a rubber stamp.

Further, when the protective film is fixed to the release layer of the rubber stamp, the effect of keeping the release layer cool after the injection of the cooling agent is obtained, and at the time of cutting by the cutter,
Since the protective film prevents minute peeling, collapse, and burrs on the edge of the release layer, an image portion having a clear contour can be formed.

Further, when the boundary line calculating means automatically calculates the position of the boundary line from the input character information, stamp face dimension information, and layout information and performs cutting, the most appropriate boundary line position is determined. The engraving time can be minimized and the operation of the device can be simplified.

[0015]

Embodiments of a rubber stamp material, a rubber stamp manufacturing apparatus and a manufacturing method according to the present invention will be described in detail below.
1 and 2 are a side view and a front view of an essential part showing an embodiment of a rubber size manufacturing apparatus according to the present invention, and this apparatus comprises an engraving machine 1 and a cooling machine 20.

The engraving machine 1 has an L-shaped pedestal portion 2, and an XY table (X-Y direction moving mechanism) is mounted on the pedestal portion 2 via a lift driver (Z-direction moving mechanism) 3. 4 are arranged. A pair of printing material fixing jigs (printing material holding mechanism) 6 are mounted on the upper surface of the XY table 4 so as to be able to change the position, and the printing material fixing jigs 6 sandwich and fix the rubber stamping material 8. The rubber stamp 8 will be described later.

A projecting portion 10 is provided above the XY table 4, and a cutter support base 12 is provided on the lower surface of the projecting portion 10.
Is provided. This cutter support base 12 is an extension 10
It can be moved horizontally between two positions by a driver (not shown) housed in. Two motors 62 (see FIGS. 5 and 6) are housed inside the cutter support base 12, and the pair of cutter fixing portions 14 protruding from the lower surface of the cutter support base 12.
Are each rotated by each motor.

A rough machining cutter 16 and a precision machining cutter 18 are detachably fixed to each cutter fixing portion 14, and either one of them is changed by switching the position of the cutter support base 12 by the drive unit. The cutter is opposed to the stamp material 8. The printing material 8 may be fixed and the cutters 16 and 18 may be moved three-dimensionally, and the number of cutters may be one or three or more as required.
Further, it is also possible to provide an elevator on the cutter support base 12 so that only the vertical movement is possible, while a configuration in which the elevator is not provided on the XY table 4 is also possible. In this case, the cutters 16 and 18 are switched by moving the printing material 8 by the XY table 4.

3 and 4 are enlarged views of the cutting edge of one example of the rough cutting cutter 16 and the precision processing cutter 18 as viewed from three angles. These cutters 16 and 18 have been conventionally used for engraving hard stamp materials other than rubber stamps, and are not a feature of the present invention. Further, the cutter that can be used in the present invention is not limited to the illustrated shape and size, and may be appropriately changed if necessary.

On the other hand, the cooler 20 has a casing 22 for accommodating a coolant container 24 as shown in FIG. 1. Inside the casing 22, the switch 30 and the driver 3 are provided.
Two are provided. The coolant container 24 is filled with a coolant such as various CFCs, carbon dioxide gas, liquid nitrogen, and laughing gas that are vaporized at room temperature and normal pressure, and when the valve button (open / close valve) 26 is pushed down, the printing material is discharged from the nozzle 28. 8. Coolant C is sprayed on 8.

The switch 30 is in contact with the side surface of the coolant container 24, and when the coolant container 24 is inside the casing 22, the switch 30 is turned off.
If it is N, it will be OFF. The driver 32 has a movable portion 34 driven by an electromagnet (not shown), and the electromagnet is connected to a timer (not shown) via a switch 30. When this timer is activated, the electromagnet is energized for a short period of time (for example, every several tens of seconds) for a short period of time (for example, for every several seconds), the movable portion 34 projects downward, and the valve button 26 is pushed. ing.

Next, FIG. 5 is a block diagram showing the overall constitution of the apparatus of this embodiment, and FIG. 6 is an explanatory diagram showing an example of a concrete constitution for realizing this block diagram. In this apparatus, as shown in FIG. 5, a stamp surface dimension input means 40 for inputting a stamp surface dimension of the rubber stamp material 8 to be engraved, a character input means 42 for inputting a character to be engraved, and a layout of characters. The layout input means 44 for inputting is input, and each information input from these is transmitted to the image synthesizing means 46. The image synthesizing means 46 synthesizes the above-mentioned information to synthesize a printed image, and outputs the synthesized image through the output means 48.

Stamp face size input means 40, character input means 4
2, specifically, the layout input means 44 includes a keyboard 70, a disk storage device 72, an image scanner 74, a CCD camera 76, a ROM 78, etc., as shown in FIG. Disk storage device 72 and ROM 7
General dictionary information is stored in advance in 8, and the image scanner 74 and the CCD camera 76 are for reading an image from the outside. The output means 48 is CR
It is composed of a T82 and a printer 84.

Referring again to FIG. 5, the information of the combined image combined in the image combining means 46 is transmitted to the boundary calculating means 50. The boundary line calculating means 50 is for calculating the position data of the boundary line between the engraving area on which the image on the printing surface is to be formed and the other blank area.

Specifically, the engraving area is a range of a predetermined distance from the periphery of each image unit (eg, individual characters, pictures, frame lines, etc.) formed on the stamp face, and whether adjacent engraving areas overlap each other. , Or if the distance between them is less than or equal to the set value, they are determined as one continuous engraving area. Then, the position of the boundary line between the engraving area and the blank area is determined.

The set value is such that a peeling layer 94 is provided by providing a blank area.
It is a value that it can be considered that the working time is shortened by scraping the peeling layer 94 rather than by peeling. A boundary line input means 52 is separately connected to the boundary line calculation means 50,
Border line position data can be directly input from here.

The boundary line position data calculated by the boundary line calculating means 50 is stored in the boundary line data holding section 56, and the image information in the engraving area is stored in the engraving area cutting data holding section 54. Each of the data holding units 54 and 56 is connected to the data reading means 58, and the data reading means 5 is connected.
8 reads out each information from each data holding unit 54, 56 in a fixed order according to the engraving procedure and transmits it to the control device 60. The image synthesizing means 46, the boundary line calculating means 50,
The data holding units 54 and 56 and the data reading means 58 are the same as those shown in FIG.
It is built in the computer 80 shown in FIG.

As shown in FIG. 5, the control device 60 controls the cutter driving motor 62, the XY table 4, and the elevator 3 at the same time. First, based on the cutting data in the engraving area, the rubber stamp 8 is formed. In the engraving area, the portion other than the image is cut to a certain first depth (see reference numeral 104 in FIG. 9). Subsequently, the control device 60 cuts the stamp surface along the boundary line to a second depth deeper than the first depth based on the boundary line position data (see reference numeral 108 in FIG. 9). The first depth and the second depth are determined by the structure of the rubber stamp material 8 described below.

FIG. 7 is a front view showing an embodiment of the rubber stamp material 8 according to the present invention, and FIG. 8 is an enlarged view of the vicinity of the stamp surface. This rubber stamp 8 has a grip layer 90A, a cushion layer 92, and an end surface of a stamp body 90 made of a hard material.
The peeling layer 94 and the protective film 96 are laminated in this order. The stamp material 8 is not limited to the illustrated shape and may have any shape.

The cushion layer 92 is formed of various kinds of rubber conventionally used as a rubber stamp material, or a flexible plastic such as foamed polyurethane, and the stamp main body 9
No. 0 is adhered irremovably via an adhesive layer 98. The cushion layer 92 is for obtaining cushioning properties at the time of imprinting, and the thickness thereof is not limited, but generally 1 to
About 3 mm is suitable.

The release layer 94 has a glass transition temperature of -50.
It is formed of a high transition point rubber having a temperature higher than 0 ° C., more preferably −10 to + 10 ° C., and is releasably joined to the cushion layer 92 via the adhesive layer 100. Release layer 94
As specific materials of, butadiene acrylonitrile rubber (NBR), butadiene styrene rubber (SBR),
Examples thereof include butadiene rubber (BR). In the case of NBR, for example, the glass transition point can be adjusted to about -80 to + 20 ° C by changing the content of acrylonitrile and other additives.

When the glass transition temperature is lower than -50 ° C, a large amount of a cooling agent is required to harden the peeling layer 94, which is costly, and the shrinkage amount of the peeling layer 94 during curing becomes large. , The dimensional error of engraving becomes large. On the other hand, if the glass transition temperature is too high, the stamp surface becomes hard in cold regions, making it difficult to stamp.

As the adhesive layer 100, the cushion layer 9
A double-sided pressure-sensitive adhesive film having a stronger adhesive force to the release layer 94 than 2 is suitable. Then, when the peeling layer 94 is peeled off, the pressure-sensitive adhesive layer 100 is completely peeled off from the cushion layer 92 while being attached to the peeling layer 94, and does not remain on the cushion layer 92. Release layer 9 rather than cushion layer 92
In order to increase the adhesive strength with respect to No. 4, the adhesive strength of the both surfaces of the adhesive layer 100 may be made different, but instead, the back surface of the peeling layer 94 is made to be a rough surface and a cushion is used. It is also effective to make the surface of the layer 92 smooth.

Generally, the glass transition point is either an inflection point (intersection point of gradient tangent line) at which the dynamic elastic modulus of a substance starts to decrease, or a temperature at which the loss elastic modulus reaches its maximum. In the case of the rubber material, the inflection point is observed at two places and the change in the dynamic elastic modulus on the low temperature side from the glass transition point is unclear. Therefore, in this specification, the loss elastic modulus is the maximum. This temperature is defined as the glass transition point.

Although the thickness of the peeling layer 94 is not limited, it is generally preferably about 1 to 2 mm. Release layer 94 is 1 mm
If it is thinner, it becomes difficult to accurately cut up to the central portion in the thickness direction like the removed portion 104 shown in FIG. 9. Again 2
If the thickness is larger than mm, it becomes difficult to cut the peeling layer 94 with the cutter 16. However, this does not apply if the performance of the cutter is improved.

As the protective film 96, an aluminum foil, an aluminum alloy foil, a metal foil such as a titanium foil, or various plastic films can be used, and they are bonded to the peeling layer 94 via the adhesive layer 102. ..
The pressure-sensitive adhesive layer 102 is preferably peeled off together with the protective film 96, and for this reason, a film with a pressure-sensitive adhesive layer having the pressure-sensitive adhesive layer 102 in advance is suitable as the protective film 96.

The thickness of the protective film 96 is preferably 40 to 70 μm, although it depends on the material. If it is less than about 40 μm, it becomes difficult to peel from the peeling layer 94, and it becomes difficult to obtain the burr prevention effect. If it is thicker than about 70 μm, the cutting of the peeling layer 94 may be disturbed. When the protective film 96 is made of metal, cold heat is dispersed over the entire surface of the peeling layer 94, so that the peeling layer 94 can be cooled more uniformly.

Next, an embodiment of a manufacturing method using the rubber stamp 8 and the rubber stamp manufacturing apparatus described above will be described.
First, the rubber stamp 8 is placed on the XY table 4 as shown in FIG. 2, and the stamp surface faces upward, and both sides are sandwiched and fixed by the stamp fixing jig 6. Next, the size of the stamp surface of the rubber stamp material 8 is input from the stamp surface dimension input means 40 shown in FIG. In this state, by the output means 48, for example, as shown in FIG.
Only the contour 110 of the stamp face is displayed as shown in FIG.

Then, by the layout input means 44,
When the layout information is input by designating the place where the character in the stamp surface is to be arranged, for example, as shown in FIG.
A character input part 112 is displayed in the area 10. Further, when the character information 114 is input by the character input means 42 and the layout is corrected as necessary, the image combining means 46 combines the respective pieces of information to create a combined screen as shown in FIG.

The boundary line calculating means 50 receives the composite screen information, and first, a range of a predetermined distance (determined by the thickness of the cutter) from the periphery of each image unit 114 formed on the stamp surface is set as the engraving area. In addition, if the adjacent engraving areas overlap each other or the distance between them is less than or equal to the set value, it is determined that they are one engraving area, and as shown in FIG. The position of the boundary line 116 of the is determined. It should be noted that, if necessary, the above-described automatic calculation of the boundary line is not performed, and the boundary line input unit 52 outputs the boundary line 116.
You may directly input the position data of. Also in this example,
Although the boundary line 116 is formed by a straight line, it may be formed by a curved line as necessary.

When the boundary line 116 is determined, its position data is temporarily stored in the boundary line data holding unit 56, and the image information in the engraving area is stored in the in-engraving area cutting data holding unit 54. Each of these data holding units 54, 56
Upon receiving a command from the data reading unit 58, the unit supplies each information to the data reading unit 58 in a fixed order according to the engraving procedure. Then, each information is supplied to the control means 60 via the data reading means 58, and the control means 60 operates the cutter drive motor 62, the XY table 4, and the elevator 3 when the cutting start command is given, and the cutter 16 is operated. Alternatively, the rubber stamp 8 is cut by 18.

On the other hand, prior to cutting, the cooler 2 shown in FIG.
0 is activated and the nozzle 32 is driven by the driver 32 at regular intervals.
The coolant C is jetted to the rubber stamp 8 through 8 According to the experiments conducted by the present inventors, when liquefied chlorofluorocarbon is used as the coolant, it is sufficient to inject the liquefied fluorocarbon C for 3 seconds immediately before the start of engraving and thereafter for 2 seconds at 90-second intervals, which is sufficient for the release layer
4 could be left to cure. By intermittently injecting the coolant C in this way, the peeling layer 94 can be cooled more uniformly than when continuously injecting a small amount, and the total amount of the coolant can be reduced. However, the injection interval and injection time are
The release layer 94 may be appropriately changed depending on the material, thickness, and area.

Rubber stamp 8 controlled by the control means 60
The cutting is performed as follows. First, as shown in FIG. 9, based on the image information in the engraving area, each boundary line 116 is
(See FIG. 14) Inside the engraving area, the rotating cutter 16
The surface is cut to the first depth while scanning, and the removed portion 104 having the surface layer removed and the image portion 106 other than the removed portion 104 are formed. That is, the first depth is a depth that reaches the center of the peeling layer 94 in the thickness direction.

Next, the peeling layer 9 is formed along each boundary line 116.
Cut 4 to a second depth. This second depth is for cutter 1
The depth of the tip of 6 reaches the cushion layer 92, and the peeling layer 94 and the pressure-sensitive adhesive layer 100 form the boundary line 116.
Is completely cut off at the border. It should be noted that the cutting along the boundary line 116 may be performed first and the removal unit 104 may be cut later, or the cutting may be performed alternately.

After cutting the entire stamp surface of the rubber stamp material 8, the cooling machine 20 is stopped and the rubber stamp material 8 is cut.
-Remove from Y table 4. Subsequently, the peeling layer 94 and the pressure-sensitive adhesive layer 100 in the blank area are peeled off from the cushion layer 92, and the protective film 96 and the pressure-sensitive adhesive layer 102 are peeled off from the image portion 106, and the work is completed.

According to the rubber stamp 8 having the above structure, the rubber stamp manufacturing apparatus, and the manufacturing method, the coolant C is intermittently sprayed on the peeling layer 94 of the rubber stamp 8 to form the peeling layer 94. Since it is cooled to a temperature lower than the glass transition point and hardened, the peeling layer 94 elastically deforms and rotates to the cutter 16.
It is possible to prevent problems such as escape from (18) and accurate engraving, and to perform engraving efficiently.

The peeling layer 94 is cut along the boundary line 116, and the portion other than the image in the engraving area is peeled off.
4 is cut and removed to a depth at which the image portion 106 is not cut, and then the image portion 106 is formed.
By peeling the sheet from the cushion layer 92, the engraving area by the cutter can be limited to only the engraving area of the stamp face, and the production time of the rubber stamp can be shortened.

When the metal protective film 96 is fixed to the peeling layer 94 of the rubber stamp 8, the cold heat of the coolant is effectively spread to the peeling layer 94 by the protective film 96, and the peeling layer 94 is formed. Can be cooled uniformly, and the effect of keeping the peeling layer 94 cold when the coolant C is stopped is obtained. Furthermore, since the protective film 96 prevents the generation of fine chips, collapses, and burrs at the edges of the peeling layer 94 during cutting with a cutter, the image portion 106 having a clear contour can be formed.

Further, in the apparatus of this embodiment, the boundary line calculating means 50 allows the input character information, stamp face dimension information,
Since the position of the boundary line 116 is automatically calculated from the layout information and cutting is performed, the most suitable position of the boundary line 116 can be determined, the area of the engraving area can be minimized, and the operation of the device can be performed. It's easy.

Therefore, with this apparatus, the rubber sheet ordered by the customer can be delivered on the spot.
It is possible to complete engraving in a time of several minutes to a dozen minutes, even with an address sheet having a large number of characters as illustrated in FIG.

In the above embodiment, the rubber stamp was cooled by intermittently injecting the coolant, but if possible, the rubber stamp was placed in a cooling container at a temperature lower than its glass transition temperature. It is also possible to arrange this and then engrave it.

Further, in the above embodiment, the nozzle 28 of the cooler 20 is of a fixed type, but a scanning mechanism for driving the nozzle 28 is provided, and the nozzle 28 is rubberized in association with the injection of the coolant. A configuration is also possible in which the stamp 8 is scanned in the longitudinal direction and a coolant is sprayed on the entire surface of the stamp 8 for rubber.

[0053]

As described above, according to the rubber stamp material, the rubber stamp manufacturing apparatus and the manufacturing method according to the present invention, the cooling agent is intermittently sprayed onto the rubber stamp material,
By cooling the release layer to a temperature lower than its glass transition temperature and hardening it, and then cutting it, it is possible to prevent problems such as the release layer elastically deforming and escaping from the cutter, resulting in inaccurate engraving. Can be done. Further, by intermittently injecting the cooling agent, the peeling layer can be cooled more uniformly than in the case of continuously injecting a small amount, and the total amount of the cooling agent can be reduced.

Further, while the peeling layer is cut along the boundary line, the portion other than the image in the engraving area is cut and removed to a depth at which the peeling layer is not cut to form an image portion, and the margin area is further cut along the boundary line. By peeling off the peeling layer from the cushion layer, the engraving area by the cutter can be limited to only the engraving area of the stamp face, and the production time of the rubber stamp can be shortened.

When the protective film is fixed to the release layer of the rubber stamp, the effect of keeping the release layer cool after spraying the coolant is obtained, and at the time of cutting with the cutter,
Since the protective film prevents minute peeling, collapse, and burrs on the edge of the release layer, an image portion having a clear contour can be formed.

Further, in the rubber size manufacturing apparatus of the present invention, when the boundary line calculating means automatically calculates the position of the boundary line from the input character information, stamp face dimension information and layout information, and performs cutting. The most suitable boundary line position can be determined, the engraving time can be minimized, and the operation of the device can be simplified.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a rubber size manufacturing apparatus according to the present invention.

FIG. 2 is a front view showing an engraving machine of the apparatus.

FIG. 3 is an explanatory diagram showing an example of a cutter used in the apparatus.

FIG. 4 is an explanatory diagram showing an example of a cutter used in the apparatus.

FIG. 5 is a block diagram showing an overall configuration of the same device.

FIG. 6 is a block diagram showing a specific overall configuration of the device.

FIG. 7 is a front view showing an embodiment of a rubber stamp material of the present invention.

FIG. 8 is an enlarged cross-sectional view showing the vicinity of a release layer of the rubber stamp material.

FIG. 9 is an enlarged cross-sectional view showing a cutting state of an engraving area and a boundary line of the rubber stamp material.

FIG. 10 is an enlarged cross-sectional view showing a state where the release layer in the blank area of the rubber stamp material is peeled off.

FIG. 11 is an output screen in a state in which stamp face dimension information is input in the embodiment of the method for manufacturing a rubber stamp according to the present invention.

FIG. 12 is an output screen showing a state in which layout information is further input by the manufacturing method.

FIG. 13 is an output screen showing a state where character information is further input by the manufacturing method.

FIG. 14 is an output screen showing a state in which an engraving area, a blank area, and a boundary line are determined by the manufacturing method.

[Explanation of symbols]

 1 Engraver 3 Elevator (Z-direction moving mechanism) 4 XY table (X-Y direction moving mechanism) 6 Printing material fixing jig (printing material holding mechanism) 8 Rubber stamping material 16, 18 Cutter 20 Cooler 24 Coolant 24 Coolant Container 26 Valve Button (Opening / Closing Valve) 28 Nozzle 32 Driver (Valve Opening / Closing Mechanism) 40 Stamp Face Dimension Input Means 42 Character Input Means 44 Layout Input Means 46 Image Synthesis Means 48 Output Means 50 Boundary Line Calculating Means 54 Retaining Cutting Data in Engraving Area Part 56 Boundary line data holding part 58 Data reading means 60 Control means 62 Cutter drive motor 90 Mark body 92 Cushion layer 94 Peeling layer 96 Protective film 104 Part where the surface layer is cut and removed 106 Image part 108 Cutting part along the boundary line 110 Stamping material Contour of stamp face 112 Character input part 114 Character 116 Boundary line

Claims (6)

[Claims] 1. A marking body, and a cushion layer made of plastic or rubber fixed to the marking body and having a flat end surface.
On the cushion layer, there is provided a release layer having a constant thickness which is detachably fixed by an adhesive, and the release layer is formed of rubber having a glass transition temperature higher than -50 ° C. A rubber stamping material. 2. A rubber stamp material according to claim 1, further comprising a protective film releasably adhered to the surface of the release layer. 3. A printing material holding mechanism for removably fixing a rubber printing material, a cutter rotating mechanism for rotating a cutter arranged perpendicular to the printing surface of the rubber printing material around its axis, the printing material holding mechanism and the cutter rotation. A Z-direction movement mechanism that moves at least one of the mechanisms toward and away from the other, and an X-Y direction movement that moves at least one of the printing material holding mechanism and the cutter rotation mechanism in a plane direction orthogonal to the Z direction. Mechanism, cooling mechanism for holding a coolant for cooling and injecting the coolant from a nozzle through a shutoff valve to a rubber stamp fixed to the stamp holding mechanism, and an open / close mechanism for intermittently opening and closing the shutoff valve An apparatus for manufacturing a rubber sheet, which is characterized by having and. 4. A stamp face dimension input means for inputting dimension information of a stamp face of a rubber stamp material, an image input means for inputting image information to be engraved on the stamp face, and the stamp face from the inputted dimension information and the image information. Boundary line calculating means for determining the engraving area where the above image is to be formed and calculating position data of the boundary line between these engraving area and the other blank area, and cutting of a portion other than the image within the engraving area. Based on the cutting data in the engraving area, the cutting data holding means for holding the position data, the boundary data holding means for holding the position data of the boundary, and the cutting position data read from the cutting data holding section in the engraving area. In order to reduce the portion other than the image to the first depth, and based on the boundary line position data read from the boundary line data holding unit, the margin area is defined along the boundary line. The control means for controlling the cutter rotating mechanism, the Z direction moving mechanism, and the XY direction moving mechanism so as to cut to a second depth deeper than 1 depth is further provided. Rubber size manufacturing equipment. 5. A cushion layer made of plastic or rubber having a flat end surface is fixed to the stamp body, and a release layer having a constant thickness made of rubber having a glass transition temperature higher than −50 ° C. is fixed on the cushion layer. After fixing so as to be peelable with an adhesive, while cutting the peeling layer, while cutting the peeling layer along the boundary line between the engraving area to engrave the image on the peeling layer and the other blank area, A portion other than the image of the engraving area is cut and removed to a depth at which the peeling layer is not cut to form an image portion, and further, a peeling layer corresponding to the blank area along the boundary line is peeled from the cushion layer, A method for producing a rubber sheet, characterized in that only a release layer in an engraved area in which an image portion is engraved is left on a cushion layer. 6. The protective film is releasably fixed to the surface of the peeling layer during the engraving, and the protective film on the image area is removed after the engraving. Item 5. A method for manufacturing a rubber sheet according to item 5.