JPS6252686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus that performs degassing and vulcanization in a series, and in particular, it simultaneously presses together many sets of unvulcanized rubber plates in a vacuum, and then adhesively vulcanizes them. It is related to the device.

In the conventional device, as shown in FIG. 1, unvulcanized rubber plates 1 and 1' are stacked on a heater plate 2, and a predetermined force is applied by a hydraulic press 3 via a pressure plate 4, so that the unvulcanized rubber plates 1 .

In this process, vulcanization was performed with some of the air pockets existing between the rubber plates remaining.

Therefore, air bubbles were present in the bonding surface between the rubber plates after vulcanization, and cracks were caused by thermal expansion of the air pockets.

Furthermore, since the adhesive vulcanization treatment is carried out for each set, productivity is low and inefficient.

In order to eliminate the above-mentioned drawbacks, the present invention has the following features:
By forcibly performing degassing treatment using vacuum force during the crimping process, the presence of air bubbles at the vulcanization boundary is eliminated, and multiple sets of unvulcanized rubber plates can be bonded and vulcanized at once. This makes it possible to process

The degassing vulcanization apparatus of the present invention is equipped with a plate-shaped pallet on which unvulcanized rubber plates are positioned and fixed, and has a large number of opposing hooks at predetermined intervals that can rotate only upwardly, and further includes A lever is provided for rotating the hooks all at once upward to the unloading position, the ceiling is open to the extent that the plate-like pallet can pass through, and the bottom is open to the extent that the plate-like pallet can be held. A press mechanism that houses the portable shelf and pressurizes the plate-like pallets from below all at once, and a seat that receives the pressurizing force through the pushed-up plate-like pallets is installed inside the press mechanism. It consists of a vacuum furnace.

The present invention will be described in detail below with reference to the drawings showing one embodiment.

2, 3, and 4 are explanatory diagrams showing an embodiment of the present invention. FIG. 2 is a schematic front cross-sectional view of a portable shelf, and FIG. 3 is an explanation of the structure around the hook part. 4 are explanatory diagrams showing the structure of the vacuum furnace. In the figure, 11 is an unvulcanized rubber plate 10,1
It is a plate-shaped pallet that has an area larger than 0' and is positioned and fixed. 13 is framed by rigid aggregates 14, 14'..., its ceiling 15 is open to a width greater than the width of the plate pallet 11, and the bottom 16 is open to the extent that the plate pallet 11 can be held. It is a portable shelf. The interior of the portable shelf 13 is provided with a large number of opposing hook parts 17, 17'. A hook 19 is provided with a flat part 20 on which the plate-shaped pallet 11 is mounted, and near the center part 21 is a hook that is rotatable via a rotational fulcrum shaft 22 fixed to the aggregate 14. Part 20
A stopper 23 is provided to horizontally support the. The mounting interval in the vertical direction of the hook portions 17, 17' is set at a pitch distance such that the hooks 19 do not interfere with each other when rotating. 24, 24' are the hook part 1
It has a series of protrusions 26 and 26' that are located near the outer sides of the shelves 7 and 17', respectively correspond to the hooks 19, and are in contact with the upper portions 25 of the outer ends of the hooks 19. Bearings 2 each fixed to
8, 28' and bearings 29, 29'.

30, 30'... are casters fixed outside the opening at the bottom of the portable shelf 13, which reduces the work of transporting the portable shelf 13.

31 is a furnace body that houses a door large enough to allow the portable shelf 13 to be taken in and out;
A vacuum pump 32 has its other end connected to the furnace body 31, has a switch 33 in the middle, and makes the inside of the furnace a vacuum state. 34 connects the blowing side to the furnace body 31, has a switch 35 in the middle part, further connects the suction side to the furnace body 31, and has a switch 37 in the middle part,
It is a heat generation source that circulates and supplies the necessary amount of heat for the vulcanization process. 38 is fixed outdoors near the central lower part of the furnace body 31, and has a pressurizing plate 39 at the tip of the upper part that is placed between the open bottom part of the portable shelf 13 and located inside the room, and presses the plate-shaped pallets 11 from below in bulk. The piston rod 40 and the furnace body 31 are connected to each other by a press mechanism, such as a hydraulic press, capable of pushing up and generating the necessary pressure for the vulcanization process.
A sealing material 41 is attached between the piston rod 40 and the piston rod 40 to block the atmosphere from inside and outside the room and on which the piston rod 40 can slide.

Reference numeral 42 denotes a seat located above the hydraulic press 38 and capable of receiving pressure from the hydraulic press 38 via the plate-shaped pallet 11.

Next, the operation will be explained.

As shown in FIG. 2, an operator first positions and fixes the unvulcanized rubber plates 10 and 10' on the plate pallet 11, and then attaches the plate pallet 11 to the hook parts 17 and 1.
The portable shelf 13 attached to the housing 7' is stored inside the furnace body 31. Inside the furnace body 31, the vacuum pump 32 starts operating, the switching device 33 operates, and the furnace body 3
A vacuum suction or degassing of the chamber 1 and the crimping surface is performed. Next, the hydraulic press 38 is operated and raised, and the press plate 39 pushes up the plate-shaped pallets 11 one after another from below. The hydraulic press 38 is raised to a position where all the unvulcanized rubber plates 10, 10' are pressed between the pressure plate 39 and the seat 42. The plate-shaped pallet 11 is pushed up by the pressure plate 39 because the hook 19 is pushed up by the lifting of the plate-shaped pallet 11 located below the hook 19, and is gradually rotated about the rotation fulcrum shaft 22.
This is then carried out by coming off the supported state and moving onto the raised plate-like pallet 11. Next, while maintaining the above-mentioned crimped state, the operation of the vacuum pump 32 is stopped, and the switch 33 is switched to return the inside of the furnace to atmospheric pressure, and then the switch 35 and the switch 37 are opened.
The heat generation source 34 is activated. The hot air generated by the heat generation source 34 sequentially circulates through the switch 35, the interior of the furnace body 31, and the switch 37, heats the unvulcanized rubber plates 10, 10' to the vulcanization temperature, and turns the unvulcanized rubber into The plates 10, 10' are held at the vulcanization temperature for a predetermined period of time.

Next, after cooling the inside of the furnace, the hydraulic press 38 is lowered.

When lowering the hydraulic press 38, lever 2
4 and 24' are pushed down and the hook 19 is rotated about the rotational fulcrum shaft 22 so that the plate-like pallet 11 and the hook 19 do not interfere with each other.

The plate-shaped pallet 11 is lowered together with the hydraulic press 38, and is finally loaded on the bottom of the transportable shelf 13. Next, the portable shelf 13 is taken out from the furnace body 31, and the plate pallet 11 and the vulcanized rubber plates are disassembled.

As described above, by carrying out the crimping process in a vacuum state and forcibly performing the degassing process using vacuum force, the crimping surface can be sufficiently degassed. Therefore, it is possible to obtain an adhesive and vulcanized state in which no residual air bubbles remain or cracks due to this occur.

Furthermore, by performing the vulcanization treatment on several sets at the same time, the productivity can be greatly improved.

According to the present invention, it is possible to obtain high-quality bonded and vulcanized rubber plates in large quantities, so it is highly effective not only in the field of manufacturing rubber plates but also in the field of sealing and assembling electronic components using rubber plates. It is.

[Brief explanation of the drawing]

Figure 1 is a front view showing a conventional vulcanizing device;
3 and 4 are explanatory diagrams showing one embodiment of the present invention, FIG. 2 is a schematic front sectional view of the portable shelf, and FIG. 3 is an explanatory diagram of the structure around the hook part,
FIG. 4 is an explanatory diagram showing the configuration of the vacuum furnace. In the figure, 1 and 1' are unvulcanized rubber plates, 2 is a heater plate, 3 is a hydraulic press, 4 is a pressure plate, 1
0 and 10' are unvulcanized rubber plates, 11 is a plate-shaped pallet, 13 is a portable shelf, 17 and 17' are hook parts,
19 is a hook, 22 is a rotation fulcrum shaft, 23 is a stopper, 24, 24' are levers, 27, 27' and 2
8 and 28' are bearings, and 30 and 30' are casters. 31 is a furnace body, 32 is a vacuum pump, 33 is a switch, 34 is a heat generation source, 35 is a switch, 37 is a switch, 38 is a hydraulic press, 39 is a pressure plate, 41 is a seal plate, and 42 is a seat. be.

Claims (1)

[Claims] 1 It is equipped with a plate-shaped pallet on which unvulcanized rubber plates are positioned and fixed, has a large number of opposing hooks at predetermined intervals that can rotate only upwards, and further moves the hooks all at once to the position where the plate-shaped pallet is removed. a portable shelf having a ceiling portion open to the extent that the plate-shaped pallet can pass therethrough and a bottom portion thereof being open to the extent that the plate-shaped pallet can be held; It consists of a press mechanism that stores shelves and pressurizes the plate-like pallets from below all at once, and a vacuum furnace equipped with a seat above the press mechanism that receives the pressurizing force through the pushed-up plate-like pallets. Characteristic degassing vulcanization equipment.