JP2006258143A - Inserting method for resin pipe into sheath pipe and manufacturing method for resin pipe with sheath pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inserting method for a resin pipe into a sheath pipe which can stably insert the resin pipe into the sheath pipe at high speed even though the sheath pipe is long. <P>SOLUTION: The flexible sheath pipe 1 is arranged in a straight line, the sheath pipe 1 is fixed by using a clamping device 3 having a clamping section capable of clamping 80% or more (L2) of the length L1 of the sheath pipe 1, and the resin pipe 2 is inserted into the sheath pipe 1 along the overall length from an edge section of the sheath pipe. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a resin tube insertion device into a sheath tube and a method for producing a resin tube with a sheath tube.

  Conventionally, resin pipes with sheath pipes are widely used for the purpose of protecting the resin pipes and facilitating the renewal of the resin pipes. For example, in the construction field, the sheaths are applied to water supply hot water supply pipes and air conditioning pipes. It is also called the pipe header method.

In such a resin tube with a sheath tube, as a method for inserting the resin tube into the sheath tube, for example, in Patent Document 1, a pressure feeding head having a circular seal portion at the end of the sheath tube is mounted, and the pressure feeding is performed. When the pipe is inserted by the propulsive force of a pair of caterpillars through the annular seal portion in the head, and the pipe is axially fed by high-pressure air supplied to the pressure feeding head and laid in the sheath pipe, the seal Disclosed is a pipe laying method in a sheath tube, in which a pipe immediately before a section is corrected and held in a circular shape by a plurality of rollers arranged at a predetermined interval in the circumferential direction of the pipe. ing.
Japanese Patent Laid-Open No. 2001-2318

  However, in the above method, when a flexible corrugated tube or the like is used as the sheath tube, there is a problem that the insertion is not always easy, the cost of the equipment such as the pumping head, and the setting of the pumping condition are set. There were problems such as difficulties.

  In addition, when the length of the sheath tube is extremely long (for example, 30 m or more), it is difficult to smoothly insert the resin tube. For example, the sheath tube is arranged in a straight line and partially fixed with a clamp. However, in the case of a flexible sheath tube such as a corrugated tube, it could not always be easily inserted.

  In view of the above-described conventional problems, an object of the present invention is to provide a resin tube insertion device and a resin tube with a sheath tube into a sheath tube that can be stably inserted at a high speed even when the length of the sheath tube is long. It is in providing the manufacturing method of.

  The apparatus for inserting a resin pipe into a sheath pipe according to claim 1 has a clamp portion capable of linearly arranging a flexible sheath pipe and clamping a portion of 80% or more of the length of the sheath pipe. It fixes using a clamp apparatus, A resin pipe is inserted over the full length in a sheath pipe from an edge part, It is characterized by the above-mentioned.

  A resin tube insertion device into a sheath tube according to claim 2 is the resin tube insertion device into the sheath tube according to claim 1, wherein the length of the sheath tube is 30 m or more.

  The manufacturing method of the resin pipe with a sheath pipe of Claim 3 uses the clamp apparatus which has a clamp part which can clamp the 80% or more part of the length of this sheath pipe for a flexible sheath pipe. After fixing, the resin tube is inserted over the entire length of the sheath tube.

  The method for producing a resin tube with a sheath tube according to claim 4 is the method for producing a resin tube with a sheath tube according to claim 3, wherein the length of the sheath tube is 30 m or more.

  The method for producing a resin tube with a sheath tube according to claim 5, wherein the sheath tube having flexibility is installed in a linear insertion frame shape having a length equal to or longer than the length of the sheath tube. A resin tube with a linear sheath tube obtained by fixing a portion of 80% or more of the length using a clamp device having a clamp portion capable of clamping, and then inserting the resin tube over the entire length of the sheath tube Is wound after being moved substantially parallel to the take-up stand disposed substantially parallel to the insertion stand.

  The method for producing a resin tube with a sheath tube according to claim 6 is the method for producing a resin tube with a sheath tube according to claim 5, wherein the length of the sheath tube is 30 m or more.

  The method for producing a resin pipe with a sheath pipe according to claim 7 is the method for producing a resin pipe with a sheath pipe according to claim 5 or 6, wherein a plurality of winding stands are provided.

Hereinafter, the present invention will be described in detail.
The sheath tube in the present invention is not particularly limited as long as it has flexibility. For example, thermoplastic resin tubes made of polyethylene resin, polypropylene resin, soft vinyl chloride resin, and their corrugated tubes. Etc. Here, the corrugated tube is one in which the cross section of the thick portion has a corrugated shape and is generally called a bellows tube.

  Among these, when the minimum thickness of the corrugated tube is 0.05 to 0.2 mm, it is preferable in that the effect of the present invention becomes remarkable. This is because if the wall thickness is too thin, the tube becomes too soft and it becomes difficult to insert the resin tube.

  The resin tube in the present invention is not particularly limited, and examples thereof include a polyethylene resin, a polypropylene resin tube, a polybutene resin tube, a vinyl chloride resin tube, a crosslinked polyethylene resin tube, and a crosslinked polypropylene resin tube. It is done. Among these, a cross-linked polyethylene resin is preferable in terms of excellent heat resistance and flexibility, and is particularly preferably used as a hot water supply pipe in a sheath pipe header method.

  In the above, a flexible sheath tube is clamped with a portion of 80% or more of the length of the sheath tube installed in a linear insertion frame having a length equal to or greater than the length of the sheath tube. The resin tube with a straight sheath tube obtained by fixing using a clamp device having a possible clamp portion and then inserting the resin tube over the entire length of the sheath tube is disposed substantially parallel to the insertion frame. In the case of winding up after moving in parallel to the take-up stand, the step of inserting the resin tube into the sheath tube and the step of winding up the resin tube with the sheath tube can be separated separately. This is preferable in that the production speed can be improved.

  Further, when a plurality of winding stands are provided, a plurality of winding processes are performed in parallel even when the time for winding the resin tube with the sheath tube is longer than the time for inserting the resin tube into the sheath tube. Therefore, it is more preferable in that the production speed can be further improved.

  The resin tube insertion device into the sheath tube of the present invention uses a clamp device that can linearly arrange flexible sheath tubes and clamp 80% or more of the length of the sheath tube ( Curved strip-shaped bracket for fastening and fixing rod-like objects.) When the length of the sheath tube is long because it is fixed and the resin tube is inserted from the end over the entire length of the sheath tube In addition, it is possible to provide a resin tube insertion device into a sheath tube in which the resin tube can be stably inserted at a high speed. For example, even in the case of a flexible sheath tube such as a corrugated tube, the sheath Movement such as vibration of the tube can be prevented, and insertion can be easily performed.

  In the case where the length of the sheath tube is 30 m or more, the above effect becomes more remarkable.

  In the method for producing a resin tube with a sheath tube according to the present invention, a flexible sheath tube is fixed using a clamp device having a clamp part capable of clamping 80% or more of the length of the sheath tube. Then, since the resin tube is inserted over the entire length of the sheath tube, the resin tube can be stably inserted at a high speed even when the length of the sheath tube is long as described above. A resin tube insertion device can be provided. For example, even in the case of a flexible sheath tube such as a corrugated tube, movement such as vibration of the sheath tube can be prevented and the tube can be easily inserted. be able to.

  In the above method for producing a resin tube with a sheath tube, when the length of the sheath tube is 30 m or more, the above effect becomes more remarkable.

  In the method for producing a resin tube with a sheath tube according to the present invention, the length of the sheath tube in which the flexible sheath tube is installed in the shape of a linear insertion frame having a length equal to or greater than the length of the sheath tube. 80% or more of the length is fixed using a clamp device having a clamp part that can be clamped, and then a resin tube with a linear sheath tube obtained by inserting the resin tube over the entire length of the sheath tube, In the case where it is wound after being moved and moved substantially parallel to the take-up stand arranged substantially parallel to the insertion stand, the time for inserting the resin pipe into the sheath pipe, and the resin pipe with the sheath pipe Since the time for winding up can be set individually, the production speed can be improved, and the above-described effect is further ensured.

  In the above method for producing a resin tube with a sheath tube, when the length of the sheath tube is 30 m or more, the above effect becomes more remarkable.

  In the case where a plurality of winding stands are provided, the production speed can be further improved, and the above-described effect is further ensured.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The resin pipe insertion device into the sheath pipe of the present invention has a flexible sheath pipe 1 arranged in a straight line so as to illustrate a side view (FIG. 1) and a plan view (FIG. 2) in FIGS. (The length L1 of the sheath tube 1 is about 50 m), and is fixed by using the clamp device 3 in which the clamp portion length L2 is 48 m. The resin tube 2 is connected to the sheath tube 1 from the end of the fixed sheath tube 1. It is a device that is inserted over the entire length. In the figure, 10 is a sheath tube feeding drum, 20 is a resin tube feeding drum, 50 is a winding drum of the resin tube 5 with a sheath tube, 61 is an insertion frame, and 62 is a frame base.

  As shown in the figure, the clamp device 3 is a metal fitting for fastening the sheath tube 1 arranged in a straight line by fastening tools 4, 4..., And FIG. As shown in the figure, for example, the upper clamp part 31 and the lower clamp part 32 can be sandwiched, and an elastic body 33 such as a thermoplastic elastomer is vertically arranged in a portion in contact with the sheath tube 1. is there.

  The clamp portion length L2 of the clamp device 3 may be any length as long as it can clamp a portion of 80% or more of the length of the sheath tube 1, and is a long continuous body as illustrated in FIGS. It may be divided into a plurality, and the total length of the clamp portions may be 80% or more of the length of the sheath tube 1.

  When the clamp portion length L2 is less than 80%, the flexible sheath tube 1 is not sufficiently fixed, and the movement of the sheath tube cannot be prevented and the resin tube is difficult to insert. become.

  As a manufacturing method of the resin tube 5 with the sheath tube using the resin tube insertion device, for example, the flexible sheath tube 1 fed out from the sheath tube feeding drum 10 is used as the gantry base 62 in the resin tube insertion device. After being inserted into the clamping device 3 disposed on the insertion base 61, the sheath tube 1 is clamped and fixed by the clamping device 3, and the end portion on the feeding side of the sheath tube 1 is cut, and then the resin It can be manufactured by inserting the resin pipe drawn from the pipe feeding drum 20 over the entire length of the sheath pipe 1. The obtained resin tube 5 with a sheath tube is usually wound up by a winding drum 50 as shown in the figure and commercialized.

  Moreover, the manufacturing method of the resin tube with a sheath tube of this invention is substantially the above-mentioned resin tube 5 with a sheath tube on the winding mount 71 as shown in FIG. 4 arrange | positioned substantially parallel to the said insertion mount 61, for example. It can also be wound up after moving in parallel. In this case, the production speed can be improved.

It is a model side view explaining an example of the resin pipe insertion apparatus in the sheath pipe of this invention. It is a model top view explaining an example of the resin pipe insertion apparatus in the sheath pipe of this invention. It is an expanded sectional view explaining the clamp device in the present invention. It is a model top view explaining an example of the winding stand in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheath pipe 2 Resin pipe 3 Clamping device 4 Clamping tool 5 Resin pipe 10 with sheath pipe Sheath pipe feeding drum 20 Resin pipe feeding drum 50 Resin pipe winding drum 61 with sheath pipe Insertion stand 62 Stand base 71 Winding stand L1 Sheath pipe length L2 Clamp length

Claims (7)

  A flexible sheath tube is arranged in a straight line, and a portion of 80% or more of the length of the sheath tube is fixed using a clamp device having a clamp portion, and the resin tube is sheathed from the end portion. An apparatus for inserting a resin pipe into a sheath pipe, wherein the apparatus is inserted over the entire length of the pipe.   The length of a sheath tube is 30 m or more, The resin tube insertion apparatus in the sheath tube of Claim 1 characterized by the above-mentioned.   The flexible sheath tube is fixed using a clamp device having a clamp portion capable of clamping 80% or more of the length of the sheath tube, and then the resin tube is inserted over the entire length of the sheath tube. The manufacturing method of the resin pipe with a sheath pipe characterized by the above-mentioned.   The length of a sheath pipe is 30 m or more, The manufacturing method of the resin pipe with a sheath pipe of Claim 3 characterized by the above-mentioned.   A clamp capable of clamping a portion of 80% or more of the length of the sheath tube, which is installed in the shape of a linear insertion mount having a length equal to or greater than the length of the sheath tube, with a flexible sheath tube A linear resin tube with a sheath tube obtained by fixing using a clamp device having a portion and then inserting the resin tube over the entire length of the sheath tube is wound up in a manner substantially parallel to the insertion frame. A method of manufacturing a resin tube with a sheath tube, wherein the resin tube is wound after being moved substantially parallel to the gantry.   The length of a sheath pipe is 30 m or more, The manufacturing method of the resin pipe with a sheath pipe of Claim 5 characterized by the above-mentioned.   The method for producing a resin tube with a sheath tube according to claim 5 or 6, wherein a plurality of winding stands are provided.

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