JPH08285174A - Device for inserting resin inserting pipe into synthetic resin pipe - Google Patents

Abstract

PURPOSE: To automatically insert a metallic pipe such as a resin inserting pipe into an inside surface of a synthetic resin pipe with high efficiency by forming tapers in inlets of guide parts so that synthetic resin inserting pipes can easily enter clamp parts of a mutually vertically divisible lower clamp and an ascendable-descendable upper clamp. CONSTITUTION: A carrier V roller 4 to transfer resin inserting pies B and C to be inserted into a synthetic resin pipe A in the pipe shaft direction of the synthetic resin pipe A, is arranged on a pipe shaft extension line of the synthetic resin pipe A placed on a placing stand 9. A mutually vertically divisible lower clamp 1 and an ascendable-descendable upper clamp 2 are arranged on one end of the placing stand 9 on its carrier V roller 4 side. Guide parts 2b and 1b are arranged in clamp parts 2a and 1a of its lower clamp 1 and upper clamp 2, and taper parts 2c and 1c are formed in inlets of its guide parts 2b and 1b so that the resin inserting pipes B and C can easily enter the clamp parts 2a and 1a. Therefore, a metallic pipe can be reliably inserted without flawing and damaging a pipe body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin inner / outer surface-coated metal tube in which a synthetic resin is coated on the inner / outer surface or the outer surface of a metal tube such as a steel tube, and a raw tube used for producing the synthetic resin outer surface-coated metal tube The present invention relates to a device for inserting a resin insertion tube or a metal tube into a synthetic resin tube in the manufacturing process of.

[0002]

2. Description of the Related Art At least one of an inner surface and an outer surface of a metal tube is coated with a synthetic resin in order to impart corrosion resistance, chemical resistance, heat insulation, designability, etc. to a metal tube such as a steel tube. Synthetic resin-coated metal tubes are known. Such a synthetic resin-coated metal pipe is manufactured by heating a raw pipe (double pipe or triple pipe) in which the synthetic resin pipe is inserted on the inner or outer surface or outer surface of the metal pipe.

As a conventional example of a device for producing such a raw pipe (double pipe), a device for inserting a synthetic resin pipe into the inner surface of a steel pipe (metal pipe) is proposed in Japanese Patent Laid-Open No. 3-162930. (Hereinafter referred to as "prior art").

FIG. 7 is a partially cutaway side view showing the prior art, and FIG. 8 is a RR arrow view of FIG. 7 showing the front surface of the clamp portion. The prior art is, as shown in FIGS. 7 and 8, a steel pipe B.
The rear end is placed on the lower clamp 11 and fixed by the magnet 13, and then the upper clamp 12 presses and clamps the steel pipe B by the pneumatic cylinder 14. The tip of the synthetic resin pipe (vinyl chloride pipe or the like) A is guided on the lower feed roll 15 by the pusher 16 by the tapered guide surfaces 11a and 12a of the clamps 11 and 12. When the pusher 16 transfers the tip of the synthetic resin pipe A to a position close to the steel pipe B, then the upper feed roll 17 is pressed against the upper surface of the synthetic resin pipe A by the pneumatic cylinder 18 to drive the lower feed roll 15. As a result, the synthetic resin pipe A advances and is inserted into the steel pipe B. As described above, the prior art is a device that inserts a synthetic resin pipe into the inner surface of a metal pipe such as a steel pipe having high rigidity.

[0005]

However, in the case of making a raw pipe (double pipe) having a synthetic resin pipe on the outer surface of the metal pipe, the metal pipe must be inserted into the inner surface of the synthetic resin pipe. Conventionally, a device that mechanizes such a process has not been proposed. That is, when the metal pipe is inserted into the inner surface of the synthetic resin pipe, the rigidity of the synthetic resin pipe body is weak and there are many bends, so that the positioning and fixing method is difficult. Therefore, conventionally, this work has been performed manually, and the work efficiency has been extremely poor. This is the same when the resin insertion pipe is inserted into the inner surface of the synthetic resin pipe in order to form a base pipe (triple pipe) having the synthetic resin pipe on the inner and outer surfaces of the metal pipe.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide an apparatus capable of automatically inserting a metal pipe such as a resin insertion pipe or a steel pipe into the inner surface of a synthetic resin pipe with high efficiency. Especially.

[0007]

According to the first aspect of the present invention,
In a device for inserting a resin insertion tube formed by inserting a synthetic resin tube into a metal tube into a synthetic resin tube, a mounting table for mounting the synthetic resin tube, and the synthetic resin mounted on the mounting table A transport V roll provided on the pipe axis extension line for transporting the resin insertion pipe to be inserted into the synthetic resin pipe in the pipe axial direction of the synthetic resin pipe, and the transport V roll side of the mounting table. Upper and lower parts, each of which has a clamp part for holding one end of the synthetic resin pipe placed on the mounting table and a guide part for guiding the resin insertion pipe into the synthetic resin pipe, Lower clamp that can be divided into two and upper clamp that can move up and down, and the transfer V
It consists of a lifting roll that can move up and down to press the upper surface of the resin insertion tube moving forward on the roll from above, and a taper is provided at the inlet of the guide section so that the resin insertion tube can easily enter the clamp section. It is characterized by being formed.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, a metal tube is applied instead of the resin insertion tube.

The invention according to claim 3 is the invention according to claim 1 or 2.
In the invention described above, the metal pipe is a steel pipe.

[0010]

The clamp parts provided on the upper clamp and the lower clamp hold and fix the rear ends of the synthetic resin pipes mounted on the mounting table. The tip of the resin insertion pipe moving toward the synthetic resin pipe on the transport V roll enters the clamp portion from the guide portion along the tapered slope of the guide portion provided at the inlet of the clamp portion on the transport V roll side. And is easily inserted into the synthetic resin tube. At this time, by pressing the upper surface of the resin insertion pipe which is moving on the transport V roll from above by the pressing roll, the driving force of the transport V roll is surely transmitted to the resin insertion pipe, and the resin insertion pipe is surely put in the synthetic resin pipe. enter in. The device of the present invention can also be applied to a single metal pipe such as a steel pipe.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway side view showing an embodiment of the present invention, FIG. 2 is an S-S arrow view showing the front of the cross-sectional portion of FIG. 1,
3 is a sectional view taken along the line TT showing the mounting table portion of FIG. 1, FIG. 4 is a sectional view taken along the line U-U of the transport V roll portion of FIG. 1, and FIG. 5 is a state in which a resin insertion pipe is inserted into a synthetic resin pipe. FIG. 6 is a sectional view of FIG.
3 is an enlarged view of the vicinity of the clamp of FIG.

As shown in FIGS. 1 and 2, the apparatus of the present invention has a mounting table (tube receiving V block, see FIG. 3) 9 for mounting the synthetic resin tube A, and a mounting table 9. The transport V roll 4 (see FIG. 4) provided on the extension line of the synthetic resin pipe A and the composite mounted on the mounting table 9 provided at one end of the mounting table 9 on the transport V roll side. A lower clamp 1 and an upper clamp 2 for gripping one end (hereinafter, referred to as a “rear end”) of the resin pipe A on the transport V roll side, and an upper surface of the resin insertion pipe BC moving on the transport V roll 4 upward. It is composed of a presser roll 5 for pressing from above. The upper clamp 2 and the lower clamp 1 are composed of upper and lower clamp portions 2a, 1a.
And upper and lower guide portions 2b and 1b for guiding the resin insertion pipe BC into the synthetic resin pipe A, which are provided on the transport V roll 4 side in contact with the clamp portions 2a and 1a, and the guide portion 2b.
It has upper and lower tapered portions 2c and 1c formed in a tapered shape, which are provided at the entrance of the transport V roll 4 side in contact with 1b.

The upper clamp 2 and the lower clamp 1 have a half-divided shape which is horizontally divided by the center diameter of the synthetic resin pipe A, and the upper clamp 2 can be moved up and down by a pneumatic cylinder 3. Clamp part 2 of upper clamp 2 and lower clamp 1
When the upper clamp 2 and the lower clamp 1 are combined, a and 1a have a shape having a dimension slightly smaller than the outer diameter of the synthetic resin pipe A. Further, in the guide portions 2b, 1b, when the upper clamp 2 and the lower clamp 1 are in a combined state, the resin insertion pipe BC is the synthetic resin pipe A.
Clamp part 2 so that it can be easily entered when entering
The shape is smaller than the inner diameter of the synthetic resin pipe A between 1a and 1a and larger than the outer diameter of the steel pipe B constituting the resin insertion pipe BC. Further, the steel pipe B constituting the resin insertion pipe BC transferred from the transport V roll 4 or the synthetic resin pipe C (indicated by a protruding portion C ′ in FIG. 6) slightly protruding from the tip of the steel pipe B is slightly bent. Even if there is, it can enter the guide portions 2b, 1b along the tapered surfaces of the tapered portions 2c, 1c, and can be inserted into the synthetic resin pipe A surely and without damaging the inner surface of the pipe, as shown in FIG. You can do it.

Each of the transport V rolls 4 is rotated by a drive source so that the resin insertion pipe BC inserted into the synthetic resin pipe A is transported in the axial direction of the synthetic resin pipe A. The presser roll 5 is provided above the upper and lower clamps 2 and the transfer V roll 4 closer to 1 so as to be lifted and lowered by the pneumatic cylinder 6 of the lifting mechanism, and the driving force of the transfer V roll 4 is applied to the resin insertion pipe C more effectively. I can surely convey it. Reference numeral 7 is a support for mounting the pneumatic cylinders 3 and 6.
8 indicates that even if the gripping force of the synthetic resin pipe A by the upper clamp 2 and the lower clamp 1 is insufficient, the synthetic resin pipe A placed on the mounting table 9 is pushed when the resin insertion pipe BC is inserted. It is a stopper to prevent it from moving from the fixed position toward the tip side.

Clamp portions 2a, 1a and guide portion 2
b and 1b may be provided one by one and the resin insertion pipes BC may be inserted into the synthetic resin pipe A one by one, for example, as shown in FIGS.
As shown in FIG. 4, if a large number of these are integrally formed, work efficiency is significantly improved. In this case, the press roll 5, the stopper 8 and the like may have structures corresponding thereto.

Next, the operation of this embodiment will be described with reference to an embodiment in which the resin insertion pipe BC is inserted into the synthetic resin pipe A by the apparatus shown in FIGS. The synthetic resin pipe A is sent by a conveyor (not shown) and placed on the mounting table 9.
At this time, the lower half of the rear end of the synthetic resin pipe A is the lower clamp 1.
It is placed in the clamp part 1a. Next, stopper 8
To place. The stopper 8 comes into contact with the tip of the synthetic resin pipe A when the synthetic resin pipe A is pressed in preparation for insufficient gripping force of the upper and lower clamps 1 and 2, and prevents the synthetic resin pipe A from falling off the mounting table 9. Next, the upper clamp 2 which has been raised upward is lowered by the pneumatic cylinder 3 to clamp the upper half of the rear end of the synthetic resin pipe A into the clamp portion 2a, and the upper clamp 2 and the lower clamp 1 make the synthetic resin pipe. Hold and fix A.

Next, the transport V roll 4 is driven to move the resin insertion pipe BC (where the synthetic resin pipe C is already inserted into the steel pipe B) toward the synthetic resin pipe A, and its arrival is brought to the proximity switch ( When not detected), the pressing roll 5 that has been raised is lowered by the pneumatic cylinder 6 and pressed against the upper surface of the resin insertion pipe BC (the steel pipe B thereof). As a result, the force that enters the synthetic resin pipe A into the resin insertion pipe BC increases. The resin insertion tube BC continues to move forward, follows the tapered surfaces 2c, 1c of the lower clamp 1 and the upper clamp 2, and then passes through the guide portions 2b, 1b to be inserted into the synthetic resin tube A. Although the resin insertion tube has been described above, it goes without saying that the present invention can be applied to a single metal tube such as a steel tube other than the resin insertion tube.

In this embodiment, a plurality of synthetic resin pipes A are used.
A plurality of resin insertion pipes BC are simultaneously inserted into each of the above, and automatic feeding and payout are performed by intermittent operation of the conveyor. This significantly improves work efficiency.

[0019]

As described above, according to the present invention, a metal pipe such as a resin insertion pipe or a steel pipe is provided in a synthetic resin pipe having a rigidity less than that of a metal pipe and a large bend,
It can be inserted quickly and surely without breakage, good product can be obtained, labor saving in work due to achievement of mechanization,
High efficiency can be achieved, and thus an industrially useful effect is brought about.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is an S-S arrow view showing the front of the cross-sectional portion of FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line TT showing the mounting table portion of FIG. 1 showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view of the transport V-roll unit of FIG. 1 taken along line U-U showing one embodiment of the present invention.

FIG. 5 is a sectional view showing a state in which a resin insertion tube is inserted into a synthetic resin tube according to one embodiment of the present invention.

FIG. 6 is an enlarged view of the vicinity of the clamp of FIG. 1 showing an embodiment of the present invention.

FIG. 7 is a partially cutaway side view showing Prior Art 1.

FIG. 8 is a RR arrow view of FIG. 7 showing the front surface of the clamp portion.

[Explanation of symbols]

 A synthetic resin pipe B steel pipe BC resin insertion pipe C synthetic resin pipe C'Synthetic resin pipe protrusion 1 Lower clamp 2 Upper clamp 1a, 2a Clamp portion 1b, 2b Guide portion 1c, 2c Taper portion 3 Pneumatic cylinder 4 Conveying V roll 5 Presser Roll 6 Pneumatic Cylinder 7 Support 8 Stopper 9 Placing Table 11, 12 Guide 13 Magnet 14 Pneumatic Cylinder 15 Lower Feed Roll 16 Pusher 17 Upper Feed Roll 18 Pneumatic Cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunio Todo, Kunio Todo, Marunouchi 1-2-2, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Yuji Sugimoto, 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Main Steel Pipe Co., Ltd. (72) Inventor Hideya Nagasaka 1-2-2 Marunouchi, Chiyoda-ku, Tokyo Japan Steel Pipe Co., Ltd. (72) Inventor Isao Inoue 2-2-13- Namiki, Kanazawa-ku, Yokohama-shi, Kanagawa 101 (72) Inventor Hideo Hirai 4-24-1 Nakarokugo, Ota-ku, Tokyo (72) Inventor Tokuo Jichi 5-13-1 -308 Isobe, Mihama-ku, Chiba City, Chiba Prefecture

Claims (3)

[Claims] 1. A device for inserting a resin insertion tube, which is formed by inserting a synthetic resin tube into a metal tube, into a synthetic resin tube,
A mounting table for mounting the synthetic resin tube, and the resin insertion tube to be inserted into the synthetic resin tube, which is provided on the tube axis extension line of the synthetic resin tube mounted on the mounting table A transfer V roll for transferring in the pipe axis direction of the resin pipe, and for gripping one end of the synthetic resin pipe mounted on the mounting table, which is provided at one end on the transfer V roll side of the mounting table. And a guide for guiding the resin insertion tube into the synthetic resin tube, the lower clamp being vertically separable and the upper clamp capable of moving up and down, and the resin insertion for advancing on the transport V roll. It is composed of a press roll capable of moving up and down for pressing the upper surface of the pipe from above, and a taper is formed at the inlet of the guide portion so that the resin insertion pipe can easily enter the clamp portion. Apparatus for inserting the resin insertion tube that synthetic resin tube. 2. The device according to claim 1, wherein a metal tube is applied instead of the resin insertion tube. 3. The device according to claim 1, wherein the metal pipe is a steel pipe.