JPS6010821Y2 - Insulation tube 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, but the former is made by molding the insulation material into a hollow cylinder shape and cutting it vertically from the center. Since the machining allowance is large, a gap is likely to be formed at the seam between the upper and lower cylinders when holding the conduit, and the latter also has drawbacks such as being time-consuming and inefficient to manufacture.

The present invention rectifies the above-mentioned deficiencies, and provides an apparatus that ensures that no gap is created between the upper and lower half cylinders when holding the conduit, and that can manufacture the upper and lower half cylinders simultaneously and individually. It is something to do.

Examples will be described below with reference to the drawings.

Figure 1 A9 is a front view and a side view showing the medium size 5 in this device, where 1 is a conduit of the same diameter as the conduit to be kept warm or cold, and 2 is a conduit with a slightly larger diameter than this conduit 1. It is a cylindrical body, with horizontal chain plates 3, 3' protruding from the center on both left and right sides, and circular collar plates 4, 4' fitted near both ends of the cylindrical body 2.

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

The upper and lower covers 6 and 6' of this outer mold 9 are brought into close contact with both the flange plates 4 and 4' of the middle mold 5 in FIG.
．． The chain plates 3, 3' protruding to the left and right of the middle mold 5 are sandwiched by the bent edges 7, 7', 8, 8' of 6', and the chain plates 3, 3' are temporarily fixed in places with the fasteners 11 shown in FIG. The assembly mold 12 is made by drilling injection ports 10 and 10' for fluid heat insulating material on both sides of the cover 6.6' of the outer mold 9 with the chain plate 3 in between.

By placing the outer mold 9 over the middle mold 5 and temporarily fixing it in this way, the assembled mold 12 has fan-shaped cavities 13, 13' above and below the chain plates 3, 3' of the middle mold 5, respectively.

When manufacturing a heat insulating cylinder using the assembly mold 12 described above, it is held obliquely (or upright) as shown in FIG. '
Injection pipes 14 and 14' are inserted into the cavities 13 and 13' on both sides of the chain plates 3 and 3', respectively, and a fluid foaming liquid 15, such as a polyurethane foaming resin liquid, is simultaneously injected into the left and right sides.

In this case, the same amount of foaming liquid 15 is simultaneously injected into the left and right cavities 13, 13', so the foaming pressures applied to the chain plates 3, 3' that partition the cavities 13, 13' are approximately equal on the left and right sides. Therefore, the injection can be completed without deforming or damaging the chain plates 3, 3', and the product will not be distorted.

After the foaming liquid has solidified, the outer mold 9 and the middle mold 5 are removed, and the upper and lower half cylinders 16, 16' having arcuate cross sections as shown in FIG. 8 are taken out.

Since the semi-cylindrical bodies 16, 16' are molded to a standard size, there is no possibility that a pupil will be formed at the joint between the two half cylinders even when the conduit is held therein.

In addition, when injecting the foaming liquid 15, without providing an injection port 10.10' in the cover 6.6' of the waist outer mold 9, either of the collar plates 4, 4' fitted into both ends of the cylindrical body 2 of the medium mold 5 is used. Sometimes, one side is removed and the injection tubes 14, 14' are inserted into both sides of the chain plate 3 for injection.

In this embodiment, an apparatus for manufacturing a semi-cylindrical body with an arcuate cross section has been described, but even when the outer shape is a polygon, the shapes of the brim plates 4, 4' of the middle mold 5 and the covers 6, 6' of the outer mold 9 can be varied. It is exactly the same if you make it square.

Since the device of the present invention has a conduit 1 in the center, it can be carried extremely easily by grasping both ends of the conduit, and therefore, this device can be brought to the site where heat insulation or cold insulation is constructed to manufacture a heat insulating tube. There is no need to take into consideration the labor and transportation costs of packaging and transporting products manufactured in a factory as in the past, and therefore the product can be provided at a low cost.

Furthermore, even if there are multiple types of conduits with different diameters at the site where heat insulation or cold insulation is to be carried out, the conduit 1 with the same diameter as that conduit can be easily selected, and the cylindrical body 2 suitable for this conduit 1 can be easily selected. Since it can be used without fail, even if various types of conduits are installed at the construction site for heat insulation and cold insulation, it is possible to manufacture the required type of insulation tube without making a mistake.

[Brief explanation of drawings]

Figure 1 (A) 9 shows the front view and side view of the medium mold, Figure 2 (A) 9 shows the front view and side view of the outer mold, and Figure 3 (A) shows the front view and side view of the outer mold. A front view and a side view of an assembled mold that combines the middle mold and the outer mold, FIG. 4 is a sketch of the stopper, FIGS. 5 and 6 are views showing how the device is used, and FIG. 7 is an explanatory diagram showing the fluidity of the heat insulating material, and FIG. 8 is a sketch of the heat insulating cylinder made by this device. In the figure, 1 is a conduit, 2 is a cylinder, 3, 3' is a chain plate, 4.4'
is a flange plate, 5 is a medium size, 6, 6' is a gutter-shaped cover, 7.7',
8.8' is a bent edge, 9 is an outer mold, 11 is a stopper, 13,1
3' is a cavity.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Horizontal chain plates protruding from the center of both sides of a hollow cylindrical body fitted into a conduit of the same thickness as the conduit to be kept warm and cold, and a collar plate fitted at the end. An outer mold consisting of upper and lower gutter-like covers with horizontal newly curved edges on both sides is placed concentrically with the medium-sized mold and spaced apart, and the chain plate of the medium-sized mold is placed between the upper and lower gutter-like covers. A manufacturing device for heat insulating cylinders that are integrally clamped and temporarily fixed by bent edges. 2. The apparatus for manufacturing a heat insulating cylinder according to claim 1 of the utility model registration, in which a flange plate is fitted into one end of the medium size. 3. The apparatus for manufacturing a heat insulating cylinder according to claim 1, which is a utility model, in which a flange plate is fitted into both ends of the medium size and an injection port is formed in the gutter-like cover.