JPS6245438B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for treating the end of a Komei plastic tube, and provides a method that can simultaneously and easily seal a hole in a Komei plastic tube and protect the cap at the end of the tube. be.

[Conventional technology]

A perforated plastic tube in which a large number of holes are formed in the tube wall in the tube axis direction is advantageous in that the rigidity and strength of the tube can be increased compared to a non-perforated plastic tube when the amount of material used is the same.

In a conduit formed by connecting such perforated plastic pipes by the socket and insertion method, holes in the end surface of the pipes are provided in order to block communication between the outside of the pipe and the inside of the pipe through the holes in the pipe axis direction. It is necessary to seal the holes, and it is known to use a sealing material such as epoxy resin for this purpose.

Conventionally, for hole sealing using the above-mentioned sealing material, the groove of a jig that fits around the entire circumference of the pipe end is filled with the sealing material, this jig is fitted to the pipe end, and the sealing material of the jig is filled with the groove. The jig is removed after the sealant is pushed into the hole in the end of the tube and cured.

[Problems with conventional technology]

However, with the above-mentioned hole sealing means, it is necessary to prepare a jig for each type of Komei plastic pipe of each diameter, and it is also necessary to wait for the sealing material to harden, making it difficult to perform the process quickly. There was.

Furthermore, in general, with respect to pipes, a protective cap is usually fitted to the end of the pipe to prevent rainwater, dirt, etc. from entering the pipe during transportation or temporary storage outdoors.

The same applies to the above-mentioned Komei plastic pipes, but since the pipe end protection caps are removed when the pipes are joined, a fitting method is used to attach them to the pipe ends, and it is necessary to ensure that the sealing material hardens sufficiently. Since the above-mentioned cap is attached to the end of the tube after waiting, this has been one of the causes of hindering speedy processing.

[Problem that the invention seeks to solve]

In view of the above-mentioned problems, the present invention provides a method for easily sealing the opening at the end of the peripheral wall of a Komei plastic tube and attaching a tube end protection cap, and in which the tube end can be processed very quickly. This was done for the purpose of

[Means for Solving the Problems] That is, the method for treating the end of a Komei plastic tube of the present invention is to provide a tube end closing plate portion at the end of a Komei plastic tube having a plurality of holes in the tube axis direction in the tube wall. A cap is provided with a groove frame that fits around the entire circumference of the tube end, and the groove frame is filled with a sealing material and fitted, and the sealant is pushed into the hole at the end of the Komei plastic tube to join the Komei plastic tube. At this time, the cap is cut and peeled off.

[Effect]

In the present invention, when sealing the opening of a hole penetrating the tube wall in the axial direction, the tube end protection cap is used as it is as a sealing jig for the sealing material used, and the tube end surface closing portion of the tube end protection cap is The canal is opened by surgically resecting it.

〔Example〕

Next, the present invention will be explained with reference to examples.

FIG. 1A shows a longitudinal sectional view of a cap used in the present invention, and FIG. 1B shows a side view of the same cap.

In FIGS. 1A and 1B, 11 is a tube end closing plate portion, and 12 is a groove frame portion around the plate portion, which has a shape and size that can be fitted around the entire circumference of the tube end. This cap is made of a thin material that is easy to cut open (in this example, plastic film with a thickness of 0.5 mm or less), and in order to make the cut easier, a cut is made as shown in Figure 1B. It is desirable to provide perforations 13, . . . , perforations 14, .

To carry out the present invention, as shown in FIG.
The groove frame portion 12 is fitted around the entire circumference of the tube end of the Komei plastic tube P as shown in FIG. 2B. By this fitting of the cap A, the sealing material B of the groove frame portion 12 of the cap A is pushed into the hole h at the tube end. Furthermore, the cap A is adhesively fixed to the tube end due to the adhesive properties of the sealing material B.

When joining Kongming plastic tubes treated in this way on-site, it is necessary to remove cap A, but since cap A is made of thin plastic film that is easy to cut, it is necessary to cut open cap A. However, the cap A can be easily removed by peeling it off. Therefore, although the cap A is adhered to the tube end by the sealant B, the cap A can be easily removed.

In the above, the hole at the end of the tube is sealed with a sealing material and the cap is attached to both ends of the tube, but the purpose can be achieved even if the hole is sealed at one end of the tube. The infiltration of dirt and sand into the pipe end is particularly problematic when the dirt gets caught in the rubber ring on the inner surface of the pipe socket (pre-attached to the inner surface of the pipe socket), so Alternatively, only the hole may be sealed and a cap may be attached.

〔effect〕

As described above, according to the method for treating the end of a Kongming plastic tube according to the present invention, when attaching a cap to the tube end, the groove frame of the cap is filled with a sealing material to seal the hole in the end of the Kongming plastic tube. Since the cap is cut and peeled off when the pipes are joined, the conventional step of waiting for the sealing material to harden before attaching the cap can be omitted. Further, even though the cap is attached to the end of the tube with a sealing material, the cap is made of a thin material that can be easily cut open, and the cap is removed by making the cut, so that the cap can be easily removed.

Therefore, according to the present invention, it is possible to seal the tube end in the process of attaching the cap, and there is an advantage that the sealing process can be performed quickly.

[Brief explanation of the drawing]

FIG. 1A is an explanatory longitudinal cross-sectional view showing a cap used in the present invention, FIG. 1B is an explanatory side view showing the same cap, and FIGS. 2A and 2B are explanatory views showing the present invention. FIG. 2A shows the state before the cap is attached, and FIG. 2B shows the state after the cap is attached. In the figure, P is a pore plastic tube, h is a hole, A is a cap, 11 is a tube end closing plate,
12 is a groove frame portion, B is a sealing material, and P is a Komei plastic tube.

Claims (1)

[Claims] 1. A thin-walled cap is attached to the tube end of a Komei plastic tube, which has a number of holes in the tube wall in the direction of the tube axis, and a groove frame that is fitted around the entire circumference of the tube end around the tube end closing plate. A tube end treatment for a Komei plastic tube, characterized in that the cap is filled with a sealing material and fitted, the sealant is pushed into a hole in the end of the Komei plastic tube, and the cap is cut and peeled off when the Komei plastic tube is joined. Method.