JPH0237459Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flexible pipe end face processing tool.

Conventionally, in order to crush the end face of a flexible pipe into a sealing surface, the end face of the pipe was crushed by being crushed with a hammer or the like. This method requires skill and is quite difficult to obtain a beautiful and smooth sealing surface.

The purpose of this invention is to solve these problems, to enable easy and quick seal surface machining without requiring any skill, and to ensure that the seal surface can be machined beautifully, smoothly and uniformly, and that no fluid leakage occurs. shall be.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments.

In FIGS. 1 to 4, reference numeral 1 designates a flexible pipe used as a pipe for water supply, hot water supply, etc., and is formed into a bellows-like shape with alternating peaks 2 and troughs 3. The material generally used is metal such as stainless steel. A flexible pipe end surface processing tool 30 for processing this includes a pipe holding mechanism F for holding and fixing the pipe 1, and an end surface pressing tool 7 for pressing and crushing the processed end surface 6 of the pipe 1.

Generally, as shown in FIG. 6, the end of the flexible pipe 1 is formed by flattening the two peaks 2 in the front and back.
A smooth end surface 6 must be formed to ensure a sealed state when crimped onto the sealing member 8, and furthermore, the outer diameter must be smaller than the original outer diameter of the peak 2 due to being flattened. It is necessary to increase the size and form a locking outer flange 11 on which the cap nut 9 is locked. (Note 10 is a male plug into which the cap nut 9 is screwed.) In this way, the flexible pipe end face processing tool according to the present invention is used to form the hooking outer flange 11 and the smooth end face 6 for sealing. However, in the illustrated example, the pipe holder 5 embodying the pipe holding mechanism F is
A pair of first and second pipe holding members 28 having a processed recess 12 having a semicircular cross-sectional shape,
29, each clamping member 28, 29 having a clamping half 13 and a gripping rod 15. The clamping halves 13, 13 are pivotally connected to each other by a pivot shaft 14 so as to be able to swing open and close, and each clamping half 13 has a gripping rod 15 protruding outward. and the gripping rod 1
5 and 15 are close to each other and are substantially parallel when the holding halves 13 and 13 are closed. Further, a gripping portion 16 is fixed to the middle or the tip of the gripping rod 15 in a covering manner using an elastic material such as rubber.

Therefore, in the machining recess 12 of the clamping half 13,
A concave groove 17 or a convex portion 50 is formed in which the peak portion 2 or valley portion 3 of the flexible pipe 1 is held in a fitted manner. In addition, in the example, three grooves 17 are formed and four convex parts 50 are formed, but of course,
Even if there is only one concave groove 17, the protrusion 50
There may be only one, and the number is not limited. In FIG. 2, a stepped portion 18 is located above the central small diameter portion 20 of the recessed groove 17.
A large diameter portion is formed, and this large diameter portion has a female screw portion 19 from the upper end to the vicinity of the stepped portion 18 . .
Further, below the small diameter portion 20, a pipe insertion side large diameter portion 22 is formed with a stepped portion 21. Gripping rod 15
This central small diameter portion 20 corresponds to the protruding position.

If the pipe is clamped from the imaginary line in FIG. 1 or the open state shown in FIGS. 2 and 3 to the solid line in FIG. 1 or the closed state shown in FIG. Pipe holding part 52 in which 1 is held in a tightly fitted manner
At the same time, a female threaded hole 51 of a continuous spiral thread is formed in the female threaded portions 19, 19. Note that a large-diameter play hole is formed in the large-diameter portions 22, 22.

However, the pipe holder 5 in such a closed state
a pressing body 24 having a male threaded portion 23 that screws into the female threaded hole formed in the female threaded portion 19;
A male threaded portion 2 protrudes from the pressing body 24.
Lever body 25 installed perpendicular to the axis of No. 3
Thus, the end face pressing tool 7 is constructed. Specifically, a hole 26 in a direction perpendicular to the axis is provided in a part of the pressing body 24, and the body 25a of the lever body 25 is inserted into the hole 26 so as to be slidable in the axial direction. The tip of the portion 25a is caulked to prevent it from coming off, and a grip portion 16 made of an elastic material such as rubber is fixed to the other end. Moreover, the end surface of the male threaded portion 23 is
(As shown in FIGS. 3 and 5) This is a pressing end surface 27 that presses and crushes the processed end surface 6 of the flexible pipe 1 held in the grooves 17. In this way, the female threaded portions 19, 19 and the male threaded portion 23 constitute the screw advancing/retracting mechanism M, and a large crushing force can be obtained with a small hand force.

To explain how to use the end face processing tool 30 configured as described above, firstly, the method shown in FIGS.
As shown in the figure, insert the two peaks 2, 2 from the end face 6 of the flexible pipe 1 deeper than the stepped part 18,
Fit the third to fifth peak parts 2 into the grooves 17 of the small diameter part 20, and then insert the male threaded part 23 of the pressing body 24 of the end presser 7 into the pipe holder 5. The half circumferential portion of the female threaded portion 19 is screwed together.
After that, hold the gripping rod 15 in your hand and swing it around the pivot shaft 14 to hold the gripping halves 13 and 1 of the pipe holder 5.
3 is closed, the state shown in Fig. 4 is achieved, and the entire circumference of the pipe 1 is securely held in the small diameter portion 20, and the male threaded portion 23 is securely held all around the circumference by the female threaded hole formed by the female threaded portions 19, 19. It is in a screwed state. Therefore, as shown by arrow A in the figure, if the lever body 25 of the pressing tool 7 is grasped and rotated with the other hand, and the pressing body 24 is screwed into the female threaded hole and pushed in, the pressing end surface 27 is directly pressed. By being elastically pressed by the processed end surface 6 of the pipe 1, the two peaks 2, 2 are flattened to form a hooking outer flange 11 and a smooth end surface for sealing. As shown in FIG. 5, by holding the gripping rods 15, 15 and opening the clamping halves 13, 13, the end of the pipe 1 and the pressing body 24 can be quickly and easily processed.
can be removed. Note that the pipe holding members 28 and 29 may have different sizes and shapes, and furthermore, only one of the pipe holding members 28 and 29 may be held by hand or may be fixed in a vise or the like. In other words, the clamping members 28, 2 are pivotally connected to the pivot shaft 14 so as to be able to swing open and close freely.
9 each has a semicircular processing recess 12,
It is sufficient that the processed recess 12 has a circular hole shape in the closed state. In addition, the female threaded portions 19, 19 are each semicircular and form a completely female threaded hole in the closed state.
A complete female screw hole is provided through either one of 9,
It is also preferable that the screw is screwed together with the male threaded portion 23 of the end face pressing tool 7, thereby configuring the screw advancing/retracting mechanism M. Further, the pressing body 24 and the lever body 25 can be freely disassembled and assembled, or a ratchet mechanism can be interposed between them to facilitate screwing forward and backward operations.

Note that the number of grooves 17 of the small diameter portion 20 can be freely increased or decreased, and the number of peaks 2 that are to be crushed to form the locking outer flange 11 can also be increased or decreased depending on the purpose and type of seal. It can be changed depending on the size etc. It is also preferable to provide a locking mechanism for holding the pipe holding members 28, 29 in a closed state.

Since the present invention is constructed as described above, it produces the following effects.

With the first and second pipe holding members 28 and 29 in an open state, the peak portion 2 or the valley portion 3 of the pipe 1 is fitted into the groove 17 or the convex portion 50 of one of the holding members, and then the second pipe holding member 28, 29 is opened. 1. Second pipe holding member 28,
When 29 is in the closed state, the pipe 1 is reliably held, and on the other hand, when it is opened from this state, the pipe 1 can be removed. Therefore, pipe 1
Installation and removal can be done easily and quickly, improving work efficiency. In addition, the overall number of parts is small, and there are no small parts that can be accidentally dropped and lost during work, making it easy to handle. Furthermore, in the case where a female screw hole 51 of a continuous spiral screw is formed in the female screw portions 19, 19 as shown in the illustrated example,
Before closing the clamping members 28 and 29, insert the male threaded portion 23 of the pressing tool 7 into the female threaded portion 1 of one clamping member.
9 is screwed into the closed state, the outer hooking flange 11 can be formed on the pipe 1 with the minimum screwing dimension, and after forming the outer hooking flange 11,
When in the open state, the pressing tool 7 can be removed without unscrewing the male threaded portion 23. Therefore, work efficiency is further improved. In other words, the processing tool according to the present invention can be used in all types of piping work such as water supply work for outer pots with showers and solar systems.
Processing of the end face of a flexible pipe can be done easily and quickly without requiring any skill at all, significantly improving work efficiency.Moreover, the processed end face 6 to which the sealing member comes into pressure contact is smooth and beautiful, and has good fluid tightness. was also significantly improved. In particular, even a long flexible pipe can be easily and quickly processed by one worker, and its practical effects can be said to be significant. Further, since the screw force of the screw advancing/retracting screw mechanism M is utilized, there is no fear of cracks occurring in the crushed portion of the pipe end face 6, and the work can be performed reliably and quickly with a small force.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a plan view showing the disassembled state, Fig. 3 is a plan view explaining how to use, Fig. 4 is a plan view showing the state in the middle of processing, Fig. 5 is a plan view showing the state immediately before completion of processing, and Fig. 6 FIG. 2 is a partially sectional front view showing an example of how to use the pipe. 1...Flexible pipe, 2...Mountain part, 6...
...End face to be processed, 7...End face presser, 12...Processing recess, 14...Pivot shaft, 17...Concave groove, 24...
Pressing main body, 25... Lever body, 27... Pressing end surface, 28, 29... Pipe clamping member, F... Pipe holding mechanism, M... Screw forwarding/retracting screw mechanism.

Claims (1)

[Claim for Utility Model Registration] An end face processing tool for processing the end face of a bellows-shaped flexible pipe 1 in which peaks 2 and valleys 3 are arranged alternately, the processing recess having a semicircular cross-sectional shape. A pair of first and second pipe holding members 28, 2 having a position 12
9 is pivotally connected with a pivot shaft 14 so as to be able to swing open and close, and a recessed groove 17 in which the peaks 2 or troughs 3 of the flexible pipe 1 is held in the processed recess 12 in a fitted manner. Alternatively, the male threaded portion 23 of the pressing body 24 is inserted into the female threaded hole 51 integrally formed in the pipe holding mechanism F having the convex portion 50 and the first pipe holding member 28 and/or the second pipe holding member 29. The flexible pipe is screwed together and held by the pipe holding portion 52 formed by the concave groove 17 or convex portion 50 of the processed recess 12 of the first and second pipe holding members 28 and 29 in the closed state. A flexible pipe end surface processing tool comprising: an end surface pressing tool 7 that presses and crushes a processed end surface 6 of a pipe 1.