JPH0410024Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention involves interposing an unvulcanized rubber tape between the lap joints of rubber sheets, heat-pressing the lap joints, and vulcanizing the unvulcanized rubber tape. The present invention relates to a rubber sheet heating and pressing device for bonding rubber sheets.

(b) Conventional technology When laying rubber sheets on sites with large construction areas such as reservoirs and roofs, it is difficult to transport and install the rubber sheets, so long rubber sheets of the desired width are laid at both ends. They were overlapped and spliced, an unvulcanized rubber tape was interposed in the overlapped spliced portion, and the spliced portion was heat-pressed to vulcanize the unvulcanized rubber tape and the rubber sheet was bonded. For this reason, conventionally, as shown in Japanese Utility Model Publication No. 56-39622, unvulcanized rubber tape has been interposed between the overlapped and spliced portions of rubber sheets using a movable manual vulcanizing and crimping device for vulcanization bonding. However, such rubber sheet vulcanization and crimping equipment uses manual hydraulic jacks and pressure springs as the crimping mechanism, so it has a complicated structure and is prone to failure.In addition, it is heavy and the rubber sheet cannot be vulcanized while moving on a slope. The construction required a great deal of labor and was inefficient. In addition, since the rubber sheet was pressurized manually, workers
Due to the uneven pressure applied, uneven pressure bonding occurred, and the adhesion between the rubber sheets was uneven, leading to concerns about poor adhesion and peeling.

(c) Problems to be solved by the invention The invention aims to provide a rubber sheet vulcanization and crimping device that uniformly heats and presses rubber sheets, provides good adhesion of the rubber sheets, is lightweight and has good workability. be.

(d) Means for solving the problem This invention is a device for bonding rubber sheets by heat and pressure bonding, in which a movable machine base is vertically opposed to each other, and at least one of them is connected to a fluid pressure cylinder. A rubber sheet vulcanizing and crimping device characterized by a heating device equipped with a heat generating plate that can move up and down, a fluid pressure cylinder installed outside the machine, and a drive pump for the fluid pressure cylinder connected by a flexible pipe. This is the gist of the idea.

(E) Embodiment Below, an embodiment of this invention will be explained in detail with reference to the drawings. As shown in Figures 1 and 2, the machine base 1 has a roughly U-shaped side surface, and a Wheels 2, 2 are configured to be movable with a sled 3 disposed behind them. As shown in FIG. 1, a lower heating plate 7 is fixed to the upper end of the lower part of the machine base 1.
A single-acting hydraulic cylinder 4 is attached to the upper part of the machine base 1 via a cylinder receiver 5. An upper heat generating plate 6 is attached to the hydraulic cylinder 4 so as to be vertically movable, facing the lower heat generating plate 7 via a heat generating plate support 8 rotatably mounted to the cylinder 4. As shown in FIG. 3, the heat generating plates 6 and 7 are constructed by laminating a heat insulating material 9, a heater plate 10, and a hot plate 11, respectively. The single-acting hydraulic cylinder 4 of the heating device configured in this way has an appropriate length depending on the hydraulic cylinder drive pump 12 installed outside the machine and the construction area of the rubber sheet (the moving range of the heating device). They are connected by a rubber tube 13. In this example,
Although a single-acting type is adopted as the fluid pressure cylinder, a double-acting type may be used, and water pressure or air pressure may be used for the fluid pressure.

Next, the operation of the heating device will be explained. In operation, the switch is turned on in advance to turn on the power, and the temperature of the heat generating plates 6 and 7 is automatically maintained at 150°C to 170°C during heat and pressure bonding. Overlap the ends of the long rubber sheets a and a' to be bonded in parallel by about 3 cm, insert the unvulcanized butyl rubber tape b between the rubber sheets, and then place the overlapped and spliced parts on top and bottom of the heating device. The upper heating plate 6 connected to the single-acting hydraulic cylinder 4 is lowered, and the overlapped rubber sheet joint is pressurized at approximately 5 kg/cm ² for approximately 2 minutes. Then, the unvulcanized butyl rubber tape b is vulcanized and bonded to the rubber sheets a and a', and the rubber sheets a and a' are completely bonded. When the vulcanization is completed, the hydraulic pressure is released and the upper heating plate 6 is raised by the spring built into the single-acting hydraulic cylinder 4 to move the heating device. Then, the construction of the rubber sheet is completed by repeatedly heat-pressing the overlapped and spliced portions of the rubber sheets with unvulcanized butyl rubber tape while sequentially moving the heating device. In addition, when inserting the joint part of the rubber sheet between the heat-generating plates, placing the heat-generating plate and wheels at a low position on the machine will make insertion easier. There is no need to hold the overlapped seam of the sheets.

(f) Effects of the invention Therefore, since the present invention is structured as described above, it has the following effects.

A heat-generating plate connected to a fluid pressure cylinder heats and presses the joints of the rubber sheets together.
Since uniform pressure bonding can be achieved with a set constant pressure, the adhesion between the rubber sheets is good, and there is no fear of them peeling off.

The heating device can be heated and crimped using a simple mechanism that uses a fluid pressure cylinder to move the heat generating plate up and down, making the crimping work quick and easy, reducing the occurrence of breakdowns, and furthermore, the heating device body is lightweight and has wheels, wheels, etc. Since it is easier to move and transport using sleds, etc., it does not require much labor, and construction work, especially on slopes, can be carried out efficiently, which is highly effective.

Moreover, the drive pump for the fluid pressure cylinder is installed outside the machine via a flexible tube, so
Vulcanization bonding can be done while moving only the heating device. The flexible tube is convenient because it can be replaced as needed depending on the rubber sheet construction area (the range of movement of the heating device).

[Brief explanation of the drawing]

Fig. 1 is a sketch of the rubber sheet heating and pressing device according to the present invention, Fig. 2 is a plan view of the heating device, and Fig. 3 is a plan view of the heating device.
The figure is a cross-sectional view showing the state in which the heating plate is attached, and FIG. 4 is a cross-sectional view showing the adhesive part of the rubber sheet. 1 is a machine base, 2 is a wheel, 3 is a sled, 4 is a hydraulic cylinder, 5 is a cylinder holder, 6 and 7 are a heat generating plate, 8 is a heat generating plate holder, 9 is a heat insulating material, 10 is a heater plate, 11
is a heating plate, 12 is a hydraulic pump, 13 is a rubber tube,
a, a' are rubber sheets, b is unvulcanized rubber tape.

Claims (1)

[Scope of utility model registration request] A heating device having a vertically movable heat generating plate attached to a movable machine base, and at least one of which is connected to a fluid pressure cylinder, facing each other vertically, and a drive for the fluid pressure cylinder installed outside the machine base. A rubber sheet heating and crimping device characterized by connecting a pump with a flexible tube.