JP2815538B2 - Flexible pipe end processing equipment and thickness confirmation jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument for crushing several ridges at the end of a metal bellows tube, a so-called flexible tube, and processing it into a flange shape.

[0002]

2. Description of the Related Art Conventionally, flexible pipes have been used in the middle of pipes or for connection between pipes and instruments, and have been used to absorb some displacement. Therefore, if the required length of the flexible pipe is determined in advance, the end of the flexible pipe 1 cut into a desired length as shown in FIG. Crush the part,
It may be processed into a collar shape as shown in [B] of FIG.
In the case of equipment installation work, etc., it is rare that the exact length is known in advance, and in such a case, it was necessary to cut the desired length into a flange shape at the work site. FIG. 6 shows an instrument for this purpose. In this method, the valley-shaped portion 1A of the flexible pipe 1 is fixed to the frame 200 with the holding means 201 interposed therebetween, and the protruding end 201 is crushed by a press member 202 to be processed into a flange shape. Since a large force is required to crush the end of the flexible tube 1, the pressing member 202 is provided at the tip of a shaft 203 having an external thread, and the shaft 203 is turned by a long operation lever 204. Is configured. The holding means 201 is an attachment that can be attached to and detached from the frame 200, and can be divided into two so that a flexible pipe to be processed can be attached and detached.

[0003]

However, in the conventional flexible pipe end processing tool as described above, the shaft 203 is required.
Since the press member 202 is advanced and retracted by the rotation of the shaft, in order to crush the mountain-like portion 1B of the flexible tube 1, the operating lever 204 must be turned to rotate the shaft 203 many times. It was inconvenient. In addition, when the flexible tube 1 is taken out after the processing, there is an inconvenience that the flexible tube 1 must be rotated many times.

Accordingly, an object of the present invention is to provide a flexible pipe end processing tool having a configuration in which a flange can be crushed by a simple operation.

[0005]

According to the first aspect of the present invention, a metal-made bellows tube in which a valley portion and a mountain portion are alternately formed is pressed and crushed to form a flange. A flexible pipe end processing tool configured to be processed into a flexible pipe end, a means for holding the valley-shaped portion of the flexible pipe and holding the end to the frame with the end protruding inside the frame; Facing the protruding end of the tube,
A press member provided along the central axis at least in a range from a forward position close to the holding means to a retreat position separated by at least the distance of at least one mountain-shaped portion; A gap adjusting means for adjusting a gap between the holding means at a position, a slide shaft member connected to the press member, a pressure acting member connected to the slide shaft member, and the slide shaft member with respect to a frame. A means for slidably holding, a short arm having a length substantially equal to the length from the end face of the pressure acting member to the rotation axis in the forward state, and a tip provided at the tip of the short arm, A roller that rolls on the end surface, is fixed at an acute angle to the short arm, is supported by a rotation axis on an extension of the axis of the slide shaft member, and is substantially perpendicular to the slide. And rotatable operating lever in the range of approximately up to a horizontal state along the de shaft member, in which a stable support member extending from said frame.

According to a second aspect of the present invention, the flexible tube end processing tool according to the first aspect further includes an urging means for urging the press member in a retreating direction. Claim 3
According to the invention, a jig used for the end processing tool for a flexible tube according to any one of claims 1 and 2, wherein the thickness of the flange is the same as the thickness of a flange-shaped portion formed at the end of the flexible tube. , So that it can be sandwiched in the gap between the press member and the holding means at the forward position.

[0007]

According to the first aspect of the present invention, by operating the long operation lever so as to push down, the short short arm fixed to the operation lever is rotated about the rotation axis by a strong force.
At this time, the tip of the short arm pushes out the slide shaft member by the rotation of the short arm. At this time, the roller provided at the distal end of the short arm also rolls on the surface of the pressure acting member at the rear end of the slide shaft member, so that the frictional resistance is reduced. As the slide shaft member is extruded, the press member moves forward and pushes the held flexible tube in the axial direction. The force by which the short arm pushes out the slide shaft member is sufficiently strong according to the lever principle based on the ratio of the length of the operation lever to the length of the short arm. The gap between the press member and the holding means at the forward position is adjusted to a desired gap by gap adjusting means. Then, when removing the processed flexible tube, the short arm is raised by raising the operation lever in a depressed state, and the slide shaft member is separated from the flexible tube.
In addition, since the stable support member extends from the frame, the frame is stable when the operating lever is pushed in or pulled up.

According to the second aspect of the present invention, since the flexible pipe end processing tool according to the first aspect is provided with a biasing means for biasing the press member in the retreating direction, when the operating lever is pulled up, the pressing member is pressed. The member retracts automatically. Therefore, the flexible tube can be removed. According to the third aspect of the present invention, the jig used for the end processing tool of the flexible pipe according to any one of the first to second aspects has a jig having the same thickness as the thickness of the flange-shaped portion formed at the end of the flexible pipe. With a flange, it is configured to be able to be sandwiched in the gap between the press member and the holding means at the forward position, so that a jig having a flange having the same thickness as the thickness of the flexible pipe to be processed is manufactured, With the jig sandwiched, the gap adjusting means is operated to adjust the gap between the press member and the holding means at the forward position, and when actually performing the processing, the jig is removed and the processing is performed. A flexible tube is set.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a flexible tube end processing tool according to the present invention.

Reference numeral 1 shown in FIG. 5A denotes a flexible tube, which is a metal bellows tube in which valley portions 1A and mountain portions 1B are alternately formed. Reference numeral 2 shown in FIGS. 1 and 2 is a flexible tube end processing tool, which crushes a mountain-like portion of the end 1C of the flexible tube 1 and [B] of FIG.
As shown in (1), it is shaped into a collar 1D.

The main part of the flexible pipe end processing tool 2 will be described in detail with reference to FIGS. 1, 2 and 3. FIG. twenty two
Is a holding means for holding the valley-shaped portion 1A of the flexible tube 1 and holding the end 1C to the frame in a state of protruding inside the frame 21. The holding means 22 is detachably inserted into a groove provided in the frame 21 and mounted. Reference numeral 23 denotes a pressing member which is opposed to the protruding end portion 1C of the flexible tube 1 and extends along its central axis 1D from at least the advance position P1 close to the holding means 22 to the retreat position P2 (distance L ) So that it can move forward and backward. A projection 29 is formed at the center of the tip of the press member 23. 24 is the press member
A slide shaft member 25 connected to 23 is a flat pressure acting surface formed on the end surface of the slide shaft member 24.

Numeral 26 denotes slide holding means for slidably holding the slide shaft member 24 with respect to the frame 21. The slide holding means 26 is slidable in a state where the press member 23 and the slide shaft member 24 are connected. I have. 27 is a gap adjusting means for adjusting the distance between the press member 23 and the slide shaft member 24, and has a structure in which the press member 23 is screwed into an internal screw provided in the slide shaft member 24. By rotating the press member 23 with respect to the slide shaft member 24, the press member 23 is configured to protrude and retract. After adjustment is complete, lock nut
Tighten 28 to secure it from turning. Reference numeral 30 denotes an operation lever, which is about 30 cm in length from the rotation shaft 31, and is bent in a rectangular shape. Reference numeral 32 denotes a short arm, which is fixed substantially at a right angle to the operation lever 30, and has a length of about 1.5 cm from the rotation shaft 31. Reference numeral 33 denotes a rolling roller rotatably provided at the tip of the short arm 32, which is configured to roll on the pressure acting surface 25 on the end surface of the slide shaft member 24 to reduce contact resistance. .

The rotating shaft 31 is connected to the slide shaft member.
It is located near the extension of the central axis of 24. The total length of the short arm 32, the length of the slide shaft member 24, and the length of the press member 23 is equal to the distance from the rotation shaft 31 to the holding means 22. The driving shaft 31 is positioned. Numeral 34 denotes a stable support member extending from the frame 21.
Lengths up to 22 are provided due to insufficient stability and operability. That is, even if the operation lever 30 is longer than the length from the rotation shaft 31 to the holding means 22, the pressure can be applied by pressing the operation lever 30 in a stable state. Further, when releasing the pressure after processing the flexible tube, if the operation lever 30 is raised while pressing the stable support member 34, the flexible tube can be safely and easily taken out. Further, the press member 23
A spring 35 is provided inside the holding means 22 as a biasing means for biasing the spring in the backward direction.

FIG. 3 is a sectional view showing the structure of a main part of the end processing tool of the flexible pipe. As illustrated, the angle θ formed by the grip portion 30A of the operation lever 30, the rotation shaft 31, and the rolling roller 33 of the short arm 32 is an acute angle. The rotation axis
The rotation range of 31 is when the operation lever 30 is pulled up most, and when the line connecting the short upper 32 and the rotation shaft 31 is substantially perpendicular to the slide shaft member 24, the operation lever 30 is pushed down most. The line connecting the short arm 32 and the rotating shaft 31 is a slide shaft member.
This is a range of approximately 90 degrees until it becomes substantially parallel to 24.

In this manner, the operation lever 30 is pushed in to form the collar 1D, the operation lever 30 is pulled up, and the flexible tube 1 is removed, whereby the flexible tubes can be processed one after another. When processing flexible pipes having different diameters, loosen the fixing screw 34, pull out the holding means 22, change the top and bottom,
Another hole should be used. The holding means 22 may be provided with only one kind of hole. Also, the slide shaft member 24
However, the holding means 22 holding the flexible tube may be moved forward and backward with respect to the fixed press member 23.

Further, it is necessary to vary the thickness of the finished flange depending on the type of the flexible pipe, so it is necessary to appropriately adjust the thickness by the gap adjusting means 27. Here, it is convenient to prepare a thickness checking jig 40 as shown in FIG. 4 according to the thickness of the finished flange. The jig 40 for checking the thickness includes a flange portion 41 having a desired thickness and a central hole.
It has 42. When adjusting the end processing tool of the flexible tube, when the operation lever 30 is pushed in while the jig 40 is fitted to the holding means 22 in a state where the flexible tube is not set, the flexible tube is completely sandwiched. like,
The lock nut 28 of the gap adjusting means 27 is loosened, and the press member 23 is rotated to protrude and retract for adjustment. After the adjustment is completed, the lock nut 28 is tightened and fixed.

[0017]

According to the first aspect of the present invention, the end of the set flexible pipe can be processed into a flange shape only by operating the long operation lever so as to be pushed down, so that the working efficiency is extremely increased. can get. Further, by extending the stable support member from the frame, the frame is stabilized when the operating lever is pushed in or pulled out, so that there is an effect that the work can be performed safely and reliably.

According to the second aspect of the present invention, the slide shaft member and the press member are automatically retracted when the operation lever is pulled up by providing the urging means for urging the press member in the retreating direction. In addition, an effect is obtained that the flexible tube can be easily removed after the processing. In the invention of claim 3, the thickness of the finished flange can be easily set by using a jig provided with a flange having the same thickness as the thickness of the flange-shaped portion formed at the end of the flexible tube. It is now possible.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of a flexible tube end processing tool according to the present invention.

FIG. 2 is a perspective view of a tool for processing an end of the flexible tube.

FIG. 3 is a cross-sectional view of a main part of the flexible tube end processing tool.

FIG. 4 is a perspective view of the jig of the present invention.

FIG. 5 is a plan view of a general flexible tube.

FIG. 6 is a cross-sectional view of a conventional flexible pipe end processing tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flexible pipe, bellows pipe 1A Valley part 1B Mountain part 1C End part 1D flange 2 Flexible pipe end processing tool 21 Frame 22 Holding means 23 Press member 24 Slide shaft member 25 Pressure acting surface 26 Slide holding means 27 Gap Adjusting means 30 Operating lever 31 Rotating shaft 32 Short arm 33 Rolling roller 34 Stable support member 35 Biasing means, spring 40 Thickness checking jig

Claims (3)

(57) [Claims] 1. A flexible tube which is formed by pressing and crushing a ridge-like portion at the end of a metallic bellows tube in which valley-like portions and ridge-like portions are formed alternately. In the end processing device, a means for holding the valley-shaped portion of the flexible tube and holding the end to the frame with the end protruding inside the frame, facing the protruding end of the flexible tube, A press member provided along the central axis at least in a range from a forward position close to the holding means to a retreat position separated by at least the distance of at least one mountain-shaped portion; A gap adjusting means for adjusting a gap between the holding means at a position, a slide shaft member connected to the press member, a pressure acting member connected to the slide shaft member, and a flexible shaft member. A means for slidably holding the arm, a short arm having a length substantially equal to the length from the end surface of the pressure acting member to the rotation axis in a forward state, and a tip provided at the tip of the short arm, A roller for rolling the end surface of the pressure acting member, fixed at an acute angle with respect to the short arm, and supported by a rotation axis on an extension of the axis of the slide shaft member; An end processing tool for a flexible pipe, comprising: an operation lever rotatable in a range up to a substantially horizontal state along a shaft member; and a stable support member extending from the frame. 2. The flexible pipe end processing tool according to claim 1, further comprising: an urging means for urging the press member in a retreating direction. 3. A jig for use in a tool for processing an end of a flexible tube according to claim 1, wherein the jig has a thickness equal to a thickness of a flange-shaped portion formed at an end of the flexible tube. A jig for thickness confirmation, comprising a flange and configured to be sandwiched in a gap between the press member and a holding means at a forward position.