JPH06277947A - Short nipple manufacturing method and manufacture tool - Google Patents

Abstract

PURPOSE:To manufacture a short nipple easily from a waste pipe or the like by screw-fitting a female screw socket and a short nipple manufacturing tool having a male screw structure in a tip part and a grip part in a rear part to a pipe material. CONSTITUTION:A pipe material 11 being a short nipple obtained by a partial taper screw cut is screw-fitted in a female screw socket 4 having a female screw structure from one side. Next, from this condition, a male screw part 3 of a short nipple manufacturing tool 1 having a male screw structure in a tip part and a grip part in a rear part is screw-fitted from the other side, and both are put in a contact condition. Next, the pipe material 11 is put in a slightly loose condition, and the male screw part 3 of the short nipple manufacturing tool 1 is screw-fitted further, and both are put in a contact condition. A screw cut is carried out on the outer periphery of the pipe material 11. When the screw cut is finished, after the short nipple manufacturing tool 1 is loosened, a short nipple being a product is used after being removed from the female screw socket 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily producing a relatively short nipple (referred to as a short nipple in the present invention) used for finely adjusting the pipe length in a plumbing site such as waterworks and the like. The present invention relates to a short nipple manufacturing tool used.

[0002]

2. Description of the Related Art In piping work for water supply, gas supply, etc. in a building, it is inevitable to work in an environment that is extremely limited in dimension. Therefore, it is necessary to use short nipples for fine adjustment everywhere during the work. The current status is that it has been completed. This short nipple is standardized in the industry, and the length of which is determined by the pipe diameter is commercially available as a piping component.

In piping, the work at the bent portion of the pipe requires the most effort for appearance and efficiency, and requires a considerable amount of time for proficiency. In addition, even a person skilled in the art often causes dimensional inconvenience in the existing piping with the short nipple. Multi-folding by using extra elbows for pipe fittings (also called elbow return)
It is the actual situation that they are being treated by the above.

In a thread cutting machine used for plumbing work, the tightening portion of the pipe varies depending on the diameter of the pipe to cut the screw.
Due to structural restrictions of the (chuck) and the threaded part (die head), too short nipples cannot be cut. Considering that in many cases, if there is a slightly longer or shorter nipple, the progress of the construction can be expected to be smoother, the inventor of the present invention has already considered it impossible to manufacture on-site. A short nipple for adjustment can be easily manufactured from a waste pipe, etc., a pipe joint socket, a screw block having a screw lock portion on at least one surface to be screwed into the pipe joint socket, and the screw lock portion at the tip. Japanese Patent Application No. 3-102042 has developed a tool for manufacturing a short nipple consisting of a tip fitting portion that fits in a screw and a screw-in handle having a position adjusting means for the screw-in block.

The tool for producing the short nipple, which was previously developed and proposed in Japanese Patent Application No. 3-12042, is epoch-making because it can recycle and utilize a pipe discarded as a waste material. However, since the screw-in block has a structure in which the handle is screwed in, and the screw-in depth is inserted into the adjustment pin hole of the handle rod, this short nipple manufacturing tool structurally separates these members. It was complicated and costly, as it had to be manufactured and the adjustment pins would not be lost with chains or strings.

Therefore, although it is possible to manufacture a short nipple in the same manner, Japanese Patent Application No. 4-325298 discloses that the short nipple manufacturing tool itself can be easily manufactured, is low in cost, and is easy to carry. As shown in FIG. 10, a gripping section 20 by a screw chuck chuck, a flange 21, and a female screw socket.
It proposes a short nipple manufacturing tool which is composed of a male screw portion 23 screwed to 24 and has a predetermined length and a diameter which are suitable for a standardized short nipple.

With such a short nipple manufacturing tool, when the female screw socket 24 is rotated and fitted while the grip portion 20 is gripped by the chuck device, the screwing is stopped when the flange 21 is reached, As a result, the threaded portion 23 of the short nipple manufacturing tool is screwed (positioned) into the female screw socket 24 by a predetermined length, and one of the pipe materials that becomes the short nipple from the other is preliminarily put into a normal thread cutting state. When this is screwed in, it comes into contact with the tip of the threaded portion 23 of the short nipple manufacturing tool, stops, and is screwed in for a predetermined length. Next, the pipe material 22 to be a short nipple is cut into a predetermined length, and a screw is cut on the projecting portion so that the short nipple is completed.

[0008]

In the short nipple manufacturing tool of this prior art, the flange 21 has a blind positioning function in the female screw socket 24 for manufacturing various standardized short nipples. But female socket
The pipe material 22 that becomes a short nipple screwed into the inside of 24 from the other
After cutting to a predetermined length, when the protrusion is threaded,
Removed from the screwed state. This work depends on grasping and turning with a tool such as a chuck, but for that reason a tool such as a wrench that can be grasped and turned is required, and the part grasped by the tool is deformed or scratches are caught. There was a problem. Further, since it is necessary to make short nipples of various pipe diameters, the short nipple manufacturing tools are carried as a set of a large number at the work site, so that they must be heavy. The present invention has been made as a result of further studies in order to eliminate such difficulties.

[0009]

SUMMARY OF THE INVENTION The present invention is a method for manufacturing a short nipple used for adjusting a pipe length in a plumbing work, which is a short nipple partially taper-threaded from one side into an internal thread socket 4. The pipe material 11 is screwed in, and the male thread portion 3 of the short nipple manufacturing tool 1 having the male thread structure at the front portion and the grip portion at the rear portion is screwed in from the other side to bring them into contact with each other, and then the pipe material 11 is slightly In the loosened state, the male thread portion 3 of the short nipple manufacturing tool 1 is further screwed to bring them into contact with each other,
This is a method for producing a short nipple, which comprises threading the pipe material 11 to the outer periphery, loosening the short nipple production tool 1, and then removing the product short nipple from the female screw socket 4.

Further, the short nipple manufacturing tool is improved to be a short nipple manufacturing tool which is a hollow cylindrical body and is composed of a grip portion 2 by a screw chuck chuck and a male screw portion 3 screwed into a female screw socket 4.

[0011]

According to the method for manufacturing a short nipple of the present invention, the contact state between the pipe material 11 and the short nipple manufacturing tool 1 which become the short nipple of the taper screw screwed into the female screw socket 4 is determined by the pipe material.
Even after slightly loosening 11, the male thread 3 of the short nipple manufacturing tool 1 is screwed in again to bring them into contact with each other again, and firmly fixed to the outer circumference of the pipe material 11 when threading. Hold the state. When this thread cutting is completed, the short nipple of the product will be removed, but in that case the pipe material 11 has already been loosened slightly by simply loosening the short nipple manufacturing tool 1, so it is possible to do without using a tool such as a wrench. It can be removed by work.

In the short nipple manufacturing tool 1 of the present invention, since there is no means for restricting the screwing of the flange or the like between the male screw portion 3 which is screwed into the female screw socket 4 and the grip portion 2, the pipe material 11 and the short member are short. The abutment position of the nipple making tool 1 can be set arbitrarily, so that the short nipple making tool 1 can be freely screwed in to keep the abutting state in accordance with the screwing position of the pipe material 11 which becomes the short nipple of the taper screw. , Can keep the fixed state at the required position. Furthermore, by making the inside hollow, it has become possible to reduce the weight and increase the strength.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a short nipple manufacturing tool 1, a female screw socket 4, and a pipe material 11 to be a short nipple before assembly. The short nipple making tool 1 has a hollow inside and a chuck for screw cutting machines.
It comprises a grip portion 2 by 25 and a male screw portion 3 that is screwed into a female screw socket 4. The female screw socket 4 is a tubular body and has a female screw structure over the entire length. The pipe material 11 has a taper thread partially cut from the end. Since it is a taper screw, it gets tighter when screwed in, but it turns loose when turned in the opposite direction.

FIG. 2 is a sectional view showing a state in which a pipe material 11 which is a short nipple partially taper-threaded from one side is screwed into an internal thread socket 4 having an internal thread structure. From this state, next, as shown in FIG. 3, the male thread portion 3 of the short nipple manufacturing tool 1 having the male thread structure at the front end and the grip portion at the rear portion is screwed into the other to bring them into contact with each other. Let The order of screwing the pipe material 11 or the short nipple manufacturing tool 1 into the female screw socket 4 may be reversed.

Next, as shown in FIG. 4, the pipe material 11 is slightly loosened. Then, as shown in FIG. 5, the short nipple manufacturing tool 1
The male screw portion 3 is further screwed to bring them into contact with each other. In this state, thread cutting is performed on the outer circumference of the pipe material 11 as shown in FIG. After finishing the thread cutting, the short nipple manufacturing tool 1 is loosened as shown in FIG. 7, and then the short nipple 12 of the product is removed from the female screw socket 4 as shown in FIG. 8 for use. Since the screwed state is already in a loosened state, it can be easily removed from the female screw socket 4 by hand. The completed short nipple 12 is roughly as shown in FIG.

[0016]

According to the present invention, a short nipple can be easily made from a waste pipe or the like. The short nipple made can be easily turned by hand and removed from the female screw socket, which makes work easier and improves work efficiency. In addition, the short nipples produced do not have scratches by a chuck or the like and deformation that easily occurs in a thin tube. In addition, due to the weight reduction of the short nipple manufacturing tool, the set of various sizes is lightened as a whole, and the operator can easily carry it.

[Brief description of drawings]

FIG. 1 is a perspective view of a short nipple manufacturing tool, a female screw socket, and a pipe member before assembling.

FIG. 2 is a cross-sectional view showing a state in which a pipe member is screwed into a female screw socket.

FIG. 3 is a cross-sectional view in which a threaded portion of a short nipple manufacturing tool is screwed in to bring them into contact with each other.

FIG. 4 is a cross-sectional view showing a state in which a pipe material is slightly loosened.

FIG. 5 is a cross-sectional view in which the threaded portion of the short nipple manufacturing tool is further screwed to bring them into contact with each other.

FIG. 6 is a cross-sectional view showing a state in which a pipe material is threaded to the outer periphery.

FIG. 7 is a sectional view of the short nipple manufacturing tool in a loosened state.

FIG. 8 is a cross-sectional view showing a state where the short nipple is manually rotated to be removed from the female screw socket.

FIG. 9 is a perspective view of a short nipple made of a pipe material.

FIG. 10 Conventional short nipple manufacturing tool, female screw socket,
It is a perspective view before an assembly of a pipe material.

[Explanation of symbols]

 1 Short nipple manufacturing tool 2 Grip section 3 Male thread section 4 Female thread socket 11 Tubing material 12 Short nipple

Claims (2)

[Claims] 1. A method for manufacturing a short nipple used for adjusting a pipe length in a plumbing work, wherein a pipe material 11 which is a short nipple partially taper-threaded from one side is screwed into an internal thread socket 4, and the other From the front, the male thread 3 of the short nipple manufacturing tool 1 having a male thread structure at the rear and a grip portion at the rear is screwed in to bring them into contact with each other, and then the pipe 11 is slightly loosened to manufacture the short nipple. It is possible to remove the short nipple of the product from the female thread socket 4 after loosening the short nipple manufacturing tool 1 by screwing the thread part 3 of the tool further into a contact state with each other and threading the thread to the outer periphery of the pipe material 11. How to make a characteristic short nipple. 2. A short nipple manufacturing tool which is a hollow cylindrical body and comprises a gripping portion 2 by a chuck of a threading machine and a male threaded portion 3 which is screwed into a female screw socket 4 at the other end.