JPH0729369B2 - Pipe making machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pipe manufacturing machine capable of manufacturing a spiral tube having a predetermined diameter in a manhole, for example.

(Prior Art) With the deterioration of concrete sewer pipes, the inner peripheral surface of the sewer pipes may be lined with synthetic resin insertion pipes.
Has been done. Synthetic resin intubation is usually inserted from the manhole to which the end of the sewer is connected. However, in the case of a small-diameter sewer, the inside of the manhole is narrow, and a long intubation should be inserted into the manhole. I can't.

For this reason, it is possible to install a manufacturing machine for spirally winding a strip into a manhole and insert the spiral tube manufactured by the machine directly into the sewer pipe. It is being appreciated. The pipe-making machine used in such a method is formed by arranging a plurality of pipe-making rollers in a cylindrical shape, as disclosed in, for example, JP-A-55-61434. The spiral tube is manufactured by introducing the strip into the cylindrical space and forcibly bending the strip by rolling the strip to the pipe making roller. When manufacturing a spiral pipe with such a pipe making machine, the cylindrical space formed by each pipe making roller should be coaxial with the sewer pipe and have a diameter substantially equal to the outer diameter of the sewer pipe. Each tube making roller must be provided.

On the other hand, the bottom part of the mahore, to which the sewer pipe is connected, may be inverted so that a groove equal to the lower half circumference of the sewer pipe is formed coaxially with the sewer pipe in order to improve the flow of the sewer pipe. In a manhole having such an invert, in the conventional pipe making machine, the lower pipe making roller cannot be arranged at a predetermined position due to the presence of the invert.
Since the spiral pipe having the outer diameter substantially equal to the inner diameter of the sewer pipe cannot be manufactured concentrically with the sewer pipe, the invert must be destroyed in advance.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and an object thereof is to provide an outer diameter substantially equal to the inner diameter of a sewer pipe without destroying the invert even in a manhole having the invert. (EN) Provided is a pipe manufacturing machine capable of manufacturing a spiral pipe having a pipe in a concentric manner with the sewer pipe.

(Means for Solving the Problems) The pipe manufacturing machine of the present invention is configured in a cylindrical shape having a predetermined diameter, is attached to a frame body with its axis centered horizontally, and the lower half body is the frame body. A tubular body projecting further downward, a belt-shaped body introducing member arranged to introduce the belt-shaped body into the tubular body, and the belt-shaped body introduced into the tubular body by the belt-shaped body introducing member And a strip-shaped guide roller rotatably supported by the pipe body wall so as to be capable of rolling contact with the pipe body inner peripheral surface, and projectingly provided on the pipe body inner peripheral surface and introduced into the pipe body. And a guide pin for guiding the strip so that the strip has a predetermined spiral angle by engaging with the strip.

(Examples) Examples of the present invention will be described below.

The pipe manufacturing machine of the present invention is arranged in a manhole having an invert, and for example, a synthetic resin strip is continuously spirally wound, and adjacent side portions in the width direction of the wound strip are adjacent to each other. The spiral tube is continuously manufactured by engaging with each other. The manufactured spiral pipe is sequentially inserted into the sewer pipe.

The pipe making machine is, for example, as shown in FIG. 1, a rectangular parallelepiped frame body.
It has 10 and a cylindrical tubular body 20. The tubular body 20 is attached to the frame body 10 so that the axis is horizontal, and the lower half of the tubular body 20 projects downward from the frame body 10. The inner diameter and the thickness of the tubular body 20 are appropriately determined depending on the diameter of the spiral tube to be manufactured, the inversion status of the manhole to be installed, and the like.

An opening 21 is provided on one side of the tubular body 20,
The lower end of the introduction table 30 is attached to the opening 21. The introduction table 30 extends substantially vertically upwards,
The strip is conveyed on one side surface thereof. The introduction table 30
A transport roller 31 is arranged at the upper end of the. The transport roller 31 is mounted such that its axis is orthogonal to the longitudinal direction of the introduction table 30. A pinch roller 32 is arranged at the upper end of the introduction table 30 so as to face the conveyance roller 31 with the strip-shaped body conveyance surface of the introduction table 30 interposed therebetween. The peripheral surface of the pinch roller 32 is substantially flush with the belt-shaped body conveying surface of the introduction table 30. The transport roller 31 is connected to a hydraulic motor 33 disposed on the side of the transport roller 31, and the transport roller 31 is rotationally driven by the hydraulic motor 33. These introduction table 30, conveyance roller 31, and pinch roller 32
A band-shaped body introducing member is constituted by, and the band-shaped body is introduced into the tubular body 20.

An introduction roller 34 is arranged at the lower end of the introduction table 30 so as to face the belt-shaped body conveying surface of the introduction table 30. The axis of the introducing roller 34 is orthogonal to the direction of conveyance of the belt-shaped body of the introducing table 30 and is parallel to the axis of the tubular body 20.

A roller shaft 31a of the conveying roller 31 extends laterally of the introduction table 30, and a sprocket 35 is fixed to the end of the roller shaft 31a. The transport roller 31 rotates integrally with the sprocket 35. On the other hand, the roller shaft 34a of the introduction roller 34
Extends outward from the end of the pipe body 20 and has a sprocket 36 facing the sprocket 35 at the end thereof.
Is stuck. The introduction roller 34 rotates integrally with the sprocket 36. Both sprockets 35 and 36 have the same diameter, and both sprockets 35 and 36 are chained.
37 is wrapped around. Therefore, the transport roller 31 and the introduction roller 34 rotate in synchronization at a constant speed.

A plurality of guide rollers 40, 40, ... Are arranged in the tubular body 20 so that the belt-shaped body introduced by the introduction table 30 can be rolled. For example, as shown in FIG. 2, the guide rollers 40 are arranged at equal intervals on a line parallel to an axis that divides the peripheral surface of the tubular body 20 into six equal parts. The axis of each guide roller 40 is parallel to the axis of the pipe body 20 and its peripheral surface does not project outward from the outer peripheral surface of the pipe body 20 and is introduced inside. The body is rotatably supported in a state of slightly protruding inward from the inner peripheral surface of the tubular body 20 so that the body can roll.

A plurality of guide pins 50, 50, which project inward from the inner peripheral surface of the tubular body 20, are implanted. Each guide pin 50
Is locked to, for example, a rib extending in the longitudinal direction formed on the surface of the strip-shaped body so that the strip-shaped body introduced into the tubular body 20 is spirally wound. Each guide pin 50 has a tubular body 20
It is arranged along the line parallel to the axis at an intermediate position of the circumferential position on the peripheral surface of the guide roller 40. The axial position of each guide pin 50 is determined so that each guide pin 50 can be engaged with the rib when the strip-shaped body is spirally wound in the tubular body 20 with a predetermined spiral angle. .

The pipe manufacturing machine of the present invention having such a configuration is used by being mounted on the invert in the manhole. That is, the lower half of the tubular body 20 is fitted in the groove on the upper surface of the invert,
The belt-shaped body is introduced between the conveying roller 31 and the pinch roller 32 of the introduction table 30, and the rollers 31 and 32 hold the belt-shaped body. Next, the strip-shaped body is moved along the introduction table 30, and further, the strip-shaped body is introduced into the tubular body 20 through the space between the introduction roller 34 and the introduction table 30. Then, the strip is rolled on the guide roller 40 in the tubular body 20 and wound into a predetermined spiral, and the rib of the strip is engaged with the guide pin 50.

When the hydraulic motor 33 is driven in such a state, the conveying roller 31 is rotated, and the introducing roller 34 is synchronously rotated with the outer conveying roller 31 at a constant speed. The belt-like body is the conveyance roller 31 and the introduction roller.
At 34, it is conveyed at a predetermined speed and introduced into the cylindrical tubular body 20. The introduced strip is guided by each guide pin 50 and wound at a predetermined spiral angle. In this case, since the strip-shaped body is bent by rolling contact with each rotatable guide roller 40, the strip-shaped body is smoothly wound. The spirally wound band-shaped body is formed into a spiral tube having a predetermined diameter by fitting the fitting protrusions and the fitting recessed grooves of the adjacent side portions into a spiral tube having a predetermined diameter.
It is derived from 20. The drawn out spiral pipe is directly introduced into the sewer pipe connected to the manhole.

(Effects of the Invention) As described above, the pipe manufacturing machine of the present invention can manufacture a spiral pipe without destroying the invert even in the mahore having the invert, and further, the spiral pipe can be directly introduced into the sewer pipe from the manhole. Can be introduced.

Further, the side surfaces of the adjacent strips can be adhered or fused to each other, so that the spiral tube having a predetermined diameter can be firmly formed. Further, the strip-shaped body is guided by the guide pin protruding on the peripheral surface of the pipe-making body so as to engage the strip-shaped body introduced into the pipe-making body and guide the strip-shaped body so as to have a predetermined spiral angle. The fitting ridge and the fitting groove of each adjacent side part are fitted to each other to form a spiral tube having a predetermined diameter, and the spiral tube can be easily and quickly drawn out from the pipe body.

Further, by sandwiching the strip-shaped body with the rollers and introducing the strip-shaped body into the pipe-making body with the introduction table by the driving force of the roller, the strip-shaped body can be strongly introduced into the pipe-making body, and easily. You can quickly make a spiral tube.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of the pipe making machine of the present invention, and FIG. 2 is a schematic view of the front thereof. 10 …… Frame, 20 …… Tube, 30 …… Introduction table, 31 ……
Transport rollers, 32 …… Pinch rollers, 34 …… Introduction rollers, 40
…… Guide roller, 50 …… Guide pin.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Fujiki 27, Minamitsuda-cho, Omihachiman City, Shiga Prefecture (72) Inventor Shigeki Fujii 2-38-308 Ukyo, Nara City, Nara Prefecture (72) Inventor Shigenobu Motomura Osaka Prefecture 1-44-18, Himurodai, Hirakata

Claims (3)

[Claims] 1. A tubular body which is formed in a cylindrical shape having a predetermined diameter, is attached to a frame body such that its axis is horizontal, and a lower half body projects downward from the frame body. A strip-shaped body introducing member arranged to introduce the strip-shaped body into the tubular body, and the strip-shaped body introduced into the tubular body by the strip-shaped body introducing member so as to be capable of rolling contact with the peripheral surface of the tubular body. A belt-shaped body guide roller rotatably supported on the tube-shaped body wall; and a belt-shaped body which is provided so as to project from the peripheral surface of the pipe-making body and which is engaged with the band-shaped body introduced into the pipe-making body. A pipe-making machine comprising: a strip-shaped body guide pin that guides the strip-shaped body so as to form a spiral angle. 2. The band-shaped body is provided with a fitting projection on one side and a fitting groove on the other side, and the fitting projection and the fitting recess on adjacent sides are provided. The pipe making machine according to claim 1, wherein the groove is fitted to form a spiral pipe having a predetermined diameter and is led out from the pipe making body. 3. The belt-shaped body introducing member holds the belt-shaped body with a roller, and drives the roller to introduce the belt-shaped body into the pipe-making body by an introduction table.
The pipe manufacturing machine according to item.