JPS61206608A - Manufacture of rubber stamp plate and production device - Google Patents

Abstract

PURPOSE:To efficiently manufacture a rubber stamp plate without developing scorches, over cures and the like by a method wherein arms are moved on a green rubber stamp plate material rack, moved above a pressing machine, retreated, moved on vulcanized molded products and finally moved on a vulcanized molded product rack. CONSTITUTION:Firstly, respective arms 13a are entered in a green rubber stamp plate material rack 2 in order to attract green rubber stamp plate materials to the arms 13a by abutting suction pads to the stamp plate materials. Secondly, the arms 13a are retreated from the rack 2 and moved on a pressing machine 1 so as to set the stamp plate materials in the mold of the pressing machine 1 and, after the attraction of the stamp plate materials by means of the suction pads is released, the arms 13a are retreated from the pressing machine 1. Thirdly, respective arms 13b are advanced on the pressing machine so as to remove the vulcanized molded products from the mold by abutting suction pads to the products and attracting the products to the arms 13b. Fourthly, the arms 13b are retreated from the pressing machine 1 and entered in a vulcanized molded product rack 3 so as to transfer the attracted vulcanized molded products onto the respective stages of the rack 3 by releasing the attraction of the pads. Consequently, the difference between the charging times in the respective molds is eliminated, resulting in preventing scorches from developing. In addition, the difference between the mold releasing times in the respective molds is eliminated, resulting in preventing the possibility of overcures from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rubber stamp plate manufacturing method and manufacturing apparatus that can efficiently manufacture rubber stamp plates.

(Prior art) Conventionally, in order to manufacture rubber stamp plates, a release agent is applied to each of a large number of prepared molds, each mold is loaded with unvulcanized rubber stamp material, and then the molds are assembled. Then, the unvulcanized rubber printing plate material is vulcanized and molded by heating under pressure, and after vulcanization, each mold is unpacked and the vulcanized products in the mold are released from the mold using a sharp, thin metal tool. While arranging the vulcanized molded products on a product tray, the molds for the vulcanized molded product removal method were cleaned one by one using a hand-held air gun or the like.

(Problem to be Solved by the Invention) However, in the method of manufacturing a rubber stamp plate as described above, unvulcanized rubber stamp material is sequentially loaded into each mold. There is a problem that there is a difference in loading time, which causes scorch, etc. Also, there is a problem such as overcuring due to the difference in time when releasing the mold.Furthermore, when the mold is removed from the hot platen, There are problems in that it takes a long time to reheat as the water is cooled down, and the thermal efficiency is not good.

(Means for Solving the Problems) The present invention eliminates the above-mentioned problems, provides a uniform product, does not cause defects such as scorch or overcure, and moreover,
It was completed with the aim of producing a rubber stamp plate manufacturing method and manufacturing device that can efficiently manufacture rubber stamp plates, and includes an unvulcanized rubber stamp material rack, a press machine for rubber vulcanization, and a vulcanized molded product rack. A movable arm on which a suction cup is vertically installed is provided in the installed factory, and the arm is moved onto an unvulcanized rubber printing plate material rack, and the suction cup is attached to the unvulcanized rubber printing plate material rack. The sulfur rubber printing plate material is adsorbed, and then the arm is moved above the press machine, the adsorption of the suction cup is released, and the unvulcanized rubber printing plate material is loaded into the mold on the mold surface, and the arm is moved back. Then, the unvulcanized rubber printing plate material in the mold is heated and pressurized by a press machine to vulcanize and mold the unvulcanized rubber printing plate material, and after molding, the mold is opened and the arm is moved onto the vulcanized product. Then, the vulcanized molded product is sucked and released from the mold by the suction cup, and then the arm is moved to the top of the vulcanized molded product rack, and the suction by the suction cup is released to vulcanize the vulcanized molded product. The first invention is a method for manufacturing a rubber stamp plate, which is characterized in that it is transferred onto a vulcanized molded product rack, and an unvulcanized rubber stamp material rack, a press machine for rubber vulcanization, and a vulcanized molded product rack are sequentially manufactured. At the same time, a rail is provided on the front side, and a vertical movable plate is provided on the rail so that it can freely reciprocate, and a front plate with arm bases that can move up and down on both sides of the movable plate can be moved up and down. Manufacturing of a rubber stamp plate, characterized in that an arm having a plurality of suction cups vertically attached to the arm base is provided horizontally, and a nozzle for applying a mold release agent is provided near the press machine. The device is a second invention.

(Example) Next, an example of the present invention will be explained in detail using the illustrated apparatus. (1) is a multi-stage rubber vulcanizing press machine installed in a factory; On the minus side of (1) is a multi-stage unvulcanized rubber printing plate material rack (2) with the front side as the entrance.
A multi-stage vulcanized product rack (3) with an entrance at the front side is arranged on the other side. (4) is a rail installed in front of the press machine (11), the unvulcanized rubber printing plate material rack (2), and the vulcanized product rack (3), and the rail (4) has a vertical type. A movable platen (5) is provided to be able to reciprocate by actuation of a cylinder (6), and guides (7a) and (7b) are provided on both sides of the movable platen (5) by actuation of cylinders (8a) and (8b). Attach front plates (9a) and (9b) that can move forward and backward under the guidance of the front plate (9a).
, (9b) have lifting cylinders (10a), (10b)
Arm base (11a) that can be raised and lowered with (1)
1b) and the arm bases (11a) and (11
b) includes a plurality of air suction/exhaust suction cups (12a);
(12b) is vertically installed below the required interval (13).
a) and (13b) are provided in multiple stages. In addition, in the figure (
14) is a conveyor that sequentially moves the vulcanized products from the upper section to the lower section of the vulcanized product rack (3);
) is a nozzle for applying a release agent installed near the press machine (11).In order to manufacture rubber stamp plates using such a device, a ,
An unvulcanized rubber printing plate made into a plate by adding raw rubber, a vulcanizing agent, a filler, a vulcanization accelerator, and an appropriate amount of easily water-soluble salt powder such as sodium chloride that does not decompose and gasify at the vulcanization temperature, and mixing it with wire. material(
21) are stacked, and first, the cylinder (8a
) to advance the front plate (9a), each arm (13a) installed horizontally on the arm base (11a)
is entered into the unvulcanized rubber printing plate material rack (2). Next, the lifting cylinder (10a) is operated to lower the arm base (11a) slightly and each arm (13a) is moved into the unvulcanized rubber stamp material rack (2).
), a plurality of suction cups (12a
) is brought into contact with the unvulcanized rubber printing plate material (21) to attract it, and then the lifting cylinder (10a) is operated in reverse to slightly raise the arm base (11a), as shown in Fig. 3. Then, the cylinder (8a) is reversely operated to move the arm (11a) out of the unvulcanized rubber printing plate material rack (2), as shown by the dashed line in FIG. During this time, the mold release agent is applied from the mold release agent application nozzle (15) to the mold set in the press machine fil. Then, the cylinder (6) is actuated to move the movable platen (5) to the position shown in FIG. ) to move the arm (11a) into the press machine (1
), operate the elevating cylinder (10a), set the unvulcanized rubber printing plate material (21) adsorbed on the suction cup (12a) in the mold of the press machine (11), and then move it to the suction cup (12a). 12a) is released, and then the lifting cylinder (10a) is operated in reverse to raise the arm (11a) slightly, and the cylinder (8a) is operated in reverse to move the arm (11a) onto the press machine (1). While further retreating, the press machine (11) is operated to remove the unvulcanized rubber printing plate material (21).
Vulcanization is performed by heating and pressurizing. After molding, the mold is opened and the cylinder (6) is operated in reverse to return the movable platen (5) to the old position shown in Figures 1 and 2, and then the cylinder (8b) is operated to move forward. Board (9b)
, the arm (13b) is advanced onto the press machine (1) via the arm base (11b), and the lifting cylinder (fob) is moved forward.
The arm (13b) is lowered slightly by the operation of the suction cup (
12b) is brought into contact with the vulcanized molded product (22), the product is adsorbed and released from the mold, and the arm (13b) is slightly raised by the reverse operation of the lifting cylinder (10b), and then the arm (13b) is raised slightly by the reverse operation of the cylinder (8b). The press machine (1) presses the arm (13b) in operation.
Exit from above. In this way, each arm (13b)
When the vulcanized molded product (22) is suctioned and held by the suction cup (12h), the cylinder [6] is operated again and the movable plate (5)
Move the arm base (11a) to press machine (1)
When the arm base (11b) is located in front of the vulcanized product rack (3), the cylinders (8a) and (8b) are operated to remove the front plates (9a) and (9).
b), the arm (13a) moves into the press machine (1).
1, the arm (13b) will enter the vulcanized product rack (3), so the lifting cylinder (10a) is operated to bring the suction cup (12a) closer to the mold. Furthermore, air is jetted out from each suction cup (12a) to clean the mold, and then the arm (13a) is raised by reverse operation of the lifting cylinder (10a). On the other hand, operate the lifting cylinder (10b) and lift the suction cup (12b).
), the vulcanized products (22) are brought close to each stage of the vulcanized product rack (3), and then the suction cups (12b
) and transfer the vulcanized molded product (22),
Thereafter, the lifting cylinder (10b) is reversely operated to slightly raise the arm (13b). And the cylinder (8
Reversely operate a) and (8b) to remove front plates (9a) and (9b).
The movable platen (5) is returned to the old position shown in FIGS. 1 and 2 by retracting the cylinder (6) and reversely operating the cylinder (6).

The vulcanized molded product (22) transferred to the lower stage of the vulcanized molded product rack (3) is then sent to a cleaning process (not shown) and finished to form a porous rubber elastic body with fine and uniform pores on the stamp surface. After that, by repeating this operation, rubber stamp plates can be manufactured continuously.

(Effects of the Invention) As is clear from the above description, the first aspect of the present invention is to simultaneously load a plurality of sheets of unvulcanized rubber printing plate material into a mold of a press machine for vulcanization and perform vulcanization molding. Because it is possible to
There is no difference in the loading time between each mold, which eliminates the occurrence of scorch.Also, since the molds are released simultaneously from within each mold, there is no difference in the mold release time between each mold. There is no risk of overcuring and the quality remains constant. Furthermore, since there is no need to remove the mold from the hot platen, vulcanization can be repeated continuously with high thermal efficiency, and all processes can be performed automatically, which has many benefits such as low-cost mass production without the need for manpower. In addition to the effects of the first invention, the second invention also eliminates waste in the arrangement of the unvulcanized rubber printing plate material rack, the press machine, and the vulcanized product rack, and the movement of the arm provided in front of the rack. The design is compact and requires less space, and the unvulcanized rubber printing plate material rack, press machine, and vulcanized product rack can be operated simultaneously using separate arms. This method has the effect of particularly improving work efficiency, and contributes greatly to the development of the industry as it solves the problems of conventional rubber stamp plate manufacturing methods and manufacturing equipment.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the apparatus of the present invention, FIG. 2 is a plan view showing the same embodiment in a different manner, FIG. 3 is a side view showing an unvulcanized rubber printing plate material rack and its related parts, and FIG. FIG. 4 is a side view showing a press machine and its related parts, and FIG. 5 is a side view showing a vulcanized product rack and its related parts. (1) Nibbles machine, (2): Unvulcanized rubber printing plate material rack, (3): Vulcanized molded product rack, (4): Rail, (5
): Movable plate, (9a), (9b): Front plate, (11a)
, (11b) : Armhess, (12a) , (
12b): Suction cup, (13a), (13b):
Arm, (]5): Nozzle for applying mold release agent.

Claims (1)

[Scope of Claims] 1. A movable arm on which a suction cup is vertically installed is provided in a factory in which an unvulcanized rubber printing plate material rack, a press machine for rubber vulcanization, and a vulcanized product rack are arranged. and move the arm onto the unvulcanized rubber printing plate material rack to cause the suction cup to adsorb the unvulcanized rubber printing plate material on the unvulcanized rubber printing plate material rack, and then move the arm above the press machine. At the same time, the suction of the suction cup is released, and unvulcanized rubber printing plate material is loaded into the mold on the mold surface, and the arm is moved back, and the unvulcanized rubber printing plate material in the mold is heated and pressed by a press machine. The unvulcanized rubber printing plate material is vulcanized and molded by pressing, and after molding, the mold is opened and the arm is moved over the vulcanized molded product, and the vulcanized molded product is sucked and released from the mold by the suction cup, Next, the arm is moved above the vulcanized product rack, and the suction by the suction cup is released to transfer the vulcanized product onto the vulcanized product rack. . 2. The method for manufacturing a rubber stamp plate according to claim 1, wherein the rubber stamp plate is a porous rubber elastic body with fine and uniform pores on the stamp surface. 3. An unvulcanized rubber printing plate material rack (2), a press machine for rubber vulcanization (1), and a vulcanized molded product rack (3) are arranged one after another, and a rail (4) is provided on the front side. A vertical movable platen (5) is provided on the rail (4) so as to be reciprocally movable, and arm bases (1) movable up and down are provided on both sides of the movable platen (5).
Front plate (9a) and (9b) with 1a) and (11b) attached
The arm base (11
a), (11b) have a plurality of suction cups (12a), (12
b) are provided horizontally with vertical arms (13a) and (13b), and furthermore, a nozzle (15) for applying a mold release agent is provided near the press machine (1). Rubber stamp plate manufacturing equipment. 4. The unvulcanized rubber printing plate material rack (2), the press machine for rubber vulcanization (1), and the vulcanized product rack (3) are all multi-stage, and the arms (13a) and (13b) are The rubber stamp plate manufacturing apparatus according to claim 3, wherein the rubber stamp plate manufacturing apparatus is provided in multiple stages on the arm bases (11a) and (11b).