JPS5821702Y2 - Insulation cylinder manufacturing equipment - Google Patents

Description

[Detailed description of the invention] A heat-insulating or cold-insulating cylinder for high-temperature or low-temperature fluid conduits is hollowed out from two upper and lower half-cylindrical bodies with an arcuate cross section, and is held from above and below the circumferential surface of the conduit. It is customary to wrap it tightly and apply a waterproof outer covering over it.

This semi-cylindrical heat insulating cylinder is made by molding the heat insulating material into a hollow cylinder shape and cutting it vertically from the center, or by molding the half cylinders individually. Since the machining allowance is large, a gap is likely to be formed at the joint between the upper and lower cylinders when holding the conduit, and the latter has drawbacks such as being labor-intensive and inefficient to manufacture.

This proposal corrects the defect of sloping, ensures that no gap is created between the upper and lower half cylinders when holding a conduit, and provides an apparatus that can simultaneously manufacture the upper and lower half cylinders. It is.

Examples will be described below with reference to the drawings.

Portion A9 in Figure 1 shows the medium size 5 used in this device.
is a hollow cylindrical body with a slightly larger diameter than the conduit that is intended to be kept warm or cold, and there is a horizontal moving plate 2 in the center of both left and right sides.
, 2' are provided in a protruding manner, and furthermore, circular collar plates 3, 3' are fitted near both ends of the cylindrical body 1.

Injection ports 4, 4' for injecting a fluid heat insulating material are provided in one of the left and right collar plates 3, 3', located symmetrically on both sides of the moving plate 2'.

Figure 2 A9 is a front view and a side view of the outer mold 9, from the upper and lower gutter-like covers 6 and 6', which have an arcuate cross section with horizontal bent edges 7, 7', 8, 8' on both sides. It is what it is.

The upper and lower covers 6 and 6' of this outer mold 9 are brought into close contact with both the flange plates 3 and 3' of the middle mold 5 in FIG.
．． The moving plates 2, 2' protruding from the left and right sides of the medium 5 are sandwiched by the bent edges 7, 7', 8, 8' of the 6', and assembled by temporarily fixing them in places with the fasteners 10 shown in Fig. 4. This is type 11.

By covering and temporarily fixing the outer mold 9 over the medium mold 5 in this way, semicircular cavities 12 and 12' are formed in the assembled mold 11 above and below the fin plates 2 and 2' of the medium mold 5, respectively. .

When manufacturing a heat insulating cylinder using the assembly mold 11 described above, as shown in FIG. ，
4' to the injection tubes 13 and 13'', respectively, to the cavities 12 and 1.
2', and a fluid heat insulating material 14 such as a polyurethane foam resin liquid is injected into both the left and right sides at the same time.

In this case, the same amount of foaming liquid 14 is injected into the left and right cavities 12, 12' at the same time, so the foaming pressures applied to the moving plates 2, 2' that partition the cavities 12, 12' are approximately equal on the left and right sides. Therefore, the injection can be completed without deforming or damaging the moving plates 2, 2', and the product will not be distorted.

After the injection liquid has solidified, remove the outer mold 9 and the middle mold 5, and the seventh
Upper and lower half cylinders 15,15' of arcuate cross section as shown in the figure are removed.

Since the half-cylindrical bodies 15, 15' are formed to the same size as the mold, there is no possibility that a gap will be formed at the joint between the two half-cylindrical bodies even when the conduit is held therein.

As described above, according to the present apparatus, it is possible to simultaneously manufacture a heat insulating cylinder consisting of upper and lower half cylinders having accurate dimensions and correcting the conventional defects.

The same effect can be achieved even if a material other than polyurethane is used as the fluid heat insulating material to be injected.

In this embodiment, a manufacturing apparatus for a semi-cylindrical body having an arcuate cross section has been described, but the same applies to a case where the outer shape is a polygon as long as the shape of the medium-sized flange plate and the outer mold are polygonal.

In addition, as shown in FIG. 8, the middle size 5 is simply a hollow cylinder 1.
Instead, it is easier to handle the mold by using a medium mold 17 in which the hollow cylindrical body 1 shown in FIG. It also has the advantage of good workability.

The present device is configured as described above, and its structure is extremely simple and easy to carry.

Therefore, since this device can be manufactured by bringing it to the site where cold storage and thermal insulation is performed, there is no need to consider the labor and transportation costs of packaging and transporting items manufactured at a factory, as in the past. Therefore, it is possible to provide products at low cost.

[Brief explanation of the drawing]

Figure 1 (A) 9 is a front view and side view of the medium mold, Figure 2 (A) 9 is a front view and side view of the outer mold, and Figure 3 (A) 9 is the assembled mold that combines the medium and outer molds. A front view and a side view, Fig. 4 is a sketch of the stopper, Fig. 5 is a diagram showing how the device is used, Fig. 6 is an explanatory diagram of the fluidity of the heat insulating material in Fig. 5, and Fig. 7 is FIG. 8 is a sketch of a heat insulating cylinder according to the present device, and is a front view of a medium-sized cylinder according to another embodiment. In the figure, 1 is a cylindrical body, 2 is a moving plate, 3 is a flange plate, 4 is an inlet provided in the flange plate, 5 is a medium size, 6 is a gutter-shaped cover, 7 and 8 are its bent edges, 9 is an outer mold , 10 is a stopper, 11 is an assembly type, 12
is a cavity, 13 is an injection pipe of fluid insulation material, 14 is an insulation material,
15 is a semi-cylindrical body, 16 is a hollow tube, and 17 is a medium size.

Claims (3)

[Scope of utility model registration request] (1) Hollow cylindrical body 10 horizontal moving plates 2, 2' in the center on both sides
A medium-sized 5 having a protruding structure and fitted with flange plates 3 and 3' at both ends.
Then, the outer mold 9, which is hollowed out from the upper and lower gutter-like covers 6 and 6' with horizontal bent edges 7, 7', 8, and 8' on both sides, is placed over the middle mold 5 concentrically and at a distance. , the moving plates 2, 2' of the medium sized 5 are integrally clamped and temporarily fixed by the bent edges 7, 7', 8, 8' of the upper and lower covers 6, 6', and the moving plates 2, 2' of the medium sized 5 are temporarily fixed. This is a manufacturing device for a heat insulating cylinder, in which injection holes 4 and 4' for a heat insulating material are symmetrically bored on both sides of a moving plate 2'. (2) The collar plates 3 and 3' are circular, and the gutter-like cover 6.6'
The apparatus for manufacturing a heat insulating cylinder according to claim (1) of the registered utility model, wherein the cylinder has an arcuate cross section. (3) The hollow cylindrical body 1 is attached to the circumferential surface of the hollow conduit 16.
are fitted and welded, and horizontal moving plates 2, 2' are placed in the center on both sides.
The apparatus for manufacturing a heat insulating cylinder as set forth in claim (1) of the utility model registration is constructed in such a manner that the cylindrical body 1 is provided with a protruding structure and collar plates 3, 3' are fitted to both ends of the cylindrical body 1.