JPH0340413Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention is for use in corrugated flexible pipes for crushing the ends of corrugated flexible pipes, such as flexible tubes, which are mainly used as fluid transport pipes such as water pipes. Regarding the crushing tool, in detail, it includes a fixed gripping part that grips the corrugated flexible tube, and a crushing device that crushes the end of the corrugated flexible tube gripped by the fixed gripping part by moving it close to the fixed gripping part. a rotating body that rotates around the same or approximately the same axis as the axis of the corrugated flexible tube; and an end face of the corrugated flexible tube as the rotating body rotates. It is composed of a plurality of idling rollers that rotate and move on the idling roller group, and the diameter of at least one idling roller of the group of idling rollers is larger toward the end of the tube axis. The present invention relates to a crushing tool for a corrugated flexible tube having an inclined guide surface.

[Prior Art] In the above-mentioned crushing tool for a corrugated flexible pipe, at least one of the idler rollers in the group of idler rollers is provided with an inclined guide surface at an end on the tube axis side, the diameter of which increases toward the end. Because of this, when the end of the corrugated flexible tube gripped by the fixed grip part is crushed, the protrusion located inside the tube end protrudes toward the tube axis to prevent burrs. This protrusion can be bent and inserted into the inner surface of the tube by the inclined guide surface to prevent this from happening.

Conventionally, as shown in Japanese Utility Model Publication No. 61-38735, for example, four idle rollers including the two idle rollers provided with the above-mentioned inclined guide surfaces are supported by a rotating body rotatably. It was attached to the spindle of the machine so that its position could not be changed.

[Problem that the invention attempts to solve]

However, in the above-mentioned conventional structure, since the idling roller is immovably attached to the spindle of the rotating body, the distance from the sloping guide surface of the idling roller to the tube axis is always constant, and as a result, the diameter When crushing different corrugated flexible tubes, the contact position between the protrusion located inside the tube end and the inclined guide surface changes in the tube diameter direction, especially when the tube diameter becomes large. , a situation occurs in which the inner protrusion of the tube end does not come into contact with the inclined guide surface at all, and as a result, the inner protrusion of the tube end is not bent and protrudes largely toward the tube axis, which causes burrs to form. It was the cause.

Therefore, when crushing corrugated flexible tubes with different diameters, prepare multiple types of crushing tools whose distance from the sloping guide surface of the free roller to the tube axis matches the diameter of each corrugated flexible tube. This resulted in the inconvenience of high costs.

The purpose of the present invention is to crush multiple types of corrugated flexible tubes of different sizes with the same crushing tool without generating burrs, by improving the idle roller and its supporting structure. The point is to make it possible.

[Means for solving problems]

The characteristic configuration of the present invention is that the idler roller provided with the inclined guide surface is fitted externally to be slidable in the pipe radial direction on a support shaft provided on the rotary body, and A biasing member is provided to bias the roller toward the rotational axis, and the other end of the idler roller provided with the inclined guide surface is provided with a biasing member that biases the roller to move toward the rotation axis side, and the other end of the idler roller provided with the inclined guide surface is provided with a biasing member that is biased toward the rotation axis of the rotary roller. In order to guide the idle roller to move away from the rotational axis of the rotating body against the biasing force of the biasing member, an inclined guide surface is formed whose diameter increases toward the end thereof. Its functions and effects are as follows.

[Effect]

The idling roller with the sloping guide surface is moved toward the rotation axis of the rotor and the distance from the inner slanted guide surface of the idling roller to the tube axis is equal to the diameter of the small-diameter corrugated flexible tube. When crushing the end of a small-diameter corrugated flexible tube by aligning the The rolling roller is held in a biased position by the biasing tool. Therefore, as the rotating body rotates, the inner protrusion at the end of the corrugated flexible tube is reliably bent toward the inner surface of the tube by the inner inclined surface of the idler roller.

In addition, when crushing the end of a large-diameter corrugated flexible tube, this tube end comes into contact with the outer inclined guide surface of the idler roller, and as a result of this contact, the idler roller is pressed by a biasing tool. A force is applied to guide the rotating body away from the rotational axis against the urging force of be done. As a result, as described above, the inner protrusion at the end of the large-diameter corrugated flexible tube is reliably bent toward the inner surface of the tube by the inner inclined guide surface of the idler roller.

[Effect of idea]

Therefore, by biasing the free rotating roller with the inclined guide surface toward the rotation axis of the rotating body with reference to the small-diameter corrugated flexible tube, it is possible to create a corrugated flexible tube with a larger diameter. In the case of flexible tubes, the position of the inner inclined guide surface of the idling roller can be automatically adjusted according to the diameter of the corrugated flexible tube, so there is no need for a special position change operation for the idling roller. It was possible to reliably crush a plurality of types of corrugated flexible tubes of different sizes with the same crushing tool without generating burrs, and it was possible to reduce costs and improve operability.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIG. 6, in order to prevent the flexible tube 1 from coming off at the connection between the flexible tube 1, which is an example of a flexible tube, and the hard tube 2, a plug is formed on the inner surface of the connection plug 3. As shown in FIG. 2, the flexible tube crushing tool that forms the tube crushing portion 5 that enters into the groove 4 and is locked is provided with a handle 6 for the operator to grasp with his/her hand. A fixed grip part C is provided on a gate-shaped support frame 7, and a pair of grip members 8 and 9 that can be switched between a state of gripping the flexible tube 1 and a state of releasing the grip, and this fixed grip. A crushing portion A is provided which crushes the end portion of the flexible tube 1 gripped by the portion C by moving close to the fixed gripping portion C.

As shown in FIG. 1, the crushed portion A is formed by a rotating body 10 that rotates around the same axis as the axis of the flexible tube 1, and as the rotating body 10 rotates, it is formed on the end surface of the flexible tube 1. It is composed of four idle rollers 11 that rotate and move.

The support frame 7 is attached to a member 12 that is fitted to the inner surface of the support frame 7 so as to be able to slide vertically only.
Screw the screw shaft 13 inserted through the upper hole 7A,
The rotating body 10 is integrally connected to the lower end of the screw shaft 13, and six disc springs 14 are interposed between the support frame 7 and the member 12.
A ratchet mechanism 15 is formed at the upper end of the rotor 3, and by repeatedly rocking the ratchet trench 16 fitted into the ratchet mechanism 15, the screw shaft 13 is rotated and the rotating body 10 is also rotated. 4 while moving the end of the flexible tube 1 fixed by the fixed gripping part C downward.
The structure is such that the rollers 11 are pressed into contact with each other and sequentially crushed. In addition, when gripping the flexible tube 1 with the fixed gripping part C,
The tightening screw 17, which is swingably attached to the support frame 7, is tightened at a predetermined position.

Note that 18 shown in FIG. 2 is a stopper that receives and holds the member 12.
8 and the member 12 is greater than the crushing reaction force of the flexible tube 1, the member 12 is held fixed at the position in contact with the stopper 18. Therefore, when the screw shaft 13 is rotated, the screw shaft 13 and the rotating body 10 move downward together, and the end of the flexible tube 1 is crushed by the four idle rollers 11 as described above. I will do it. When this crushing progresses and the crushing reaction force of the flexible tube 1 becomes larger than the frictional force between the stopper 18 and the member 12, the screw shaft 1
As the member 3 and the member 12 rotate relative to each other, the member 12 moves upward against the elastic biasing force of the disc spring 14. By moving the member 12 upward until the mark attached thereto matches the mark attached to the support frame 7, the elastic restoring force of the disc spring 14 finally allows the flexible tube 1 to Since the end portion is crushed, the crushing force on the flexible tube 1 can always be maintained at the set crushing force regardless of the user.

When assembling the four idle rollers 11 to the rotating body 10, as shown in FIG.
9 is integrally formed in a cross shape centered at a location corresponding to the axis of the flexible tube 1, and a notch 10A into which the tip of each support shaft 19 of the integrally formed shaft member 20 engages is formed on the rotating body. A pullout is formed at the end of the cylindrical portion of the shaft member 20 and prevents the tip end of the support shaft 19 of the shaft member 20, which is engaged in the notch 10A, from being pulled out and moved toward the fixed gripping portion C side. Stop means B are provided.

The retaining means B includes a circumferential groove 10B formed on the outer circumferential surface of the rotating body 10, and a stepped portion removably fitted into the circumferential groove 10B and cut out at the end of each support shaft 19. and a ring 21 that prevents the shaft member 20 from being pulled out and moved by contact with the ring 21.

Then, each of the idle rollers 11 is rotatably fitted onto each support shaft 19 in advance, and the tip of each support shaft 19 of the shaft member 20 equipped with the idle roller 11 is inserted into the notch 10A of the rotating body 10. After the engagement, the ring 21 is elastically deformed to an enlarged diameter state and fitted into the circumferential groove 10B of the rotating body 10, thereby preventing the shaft member 20 from being pulled out toward the gripping members 8 and 9. By blocking this, the assembly of the idling roller 11 is completed.

Of the four idle rollers 11, two idle rollers 1 face each other in the diametrical direction of the rotating body 10.
1 are formed with inclined guide surfaces 22A and 22B whose diameter becomes larger toward the end.
A coil spring 33 serving as a biasing member for biasing the idle rollers 11 toward the rotation axis of the rotating body 10 is fitted onto the support shaft 19 .

Therefore, as shown in FIG. 4A, the inclined guide surfaces 22A and 22B formed on the idle roller 11
Of these, the inclined guide surface 22A on the tube axis side has a protruding portion 23 located inside the end of the tube crushed portion 5.
(See FIG. 5) This protrusion 23 is bent inward of the tube so that it does not protrude toward the tube axis and form a burr.

Moreover, as shown in FIG. 4B, the inclined guide surface 2
The inclined guide surface 22B on the side away from the tube axis of 2A and 22B is used for the large diameter flexible tube 1.
When the ends of the rollers come into contact with each other, the idling roller 11 is guided to move away from the rotation axis of the rotating body 10 against the biasing force of the spring 33, and the two flexible tubes 1 with different inner diameters are guided. Idle roller 11
is properly positioned so that the protrusion 23 of the tube crushing portion 5 does not protrude toward the tube axis.

The distance between the two idling rollers 11, 11 is set to such a distance that the end of the small diameter flexible tube 1 is located on the pressing surface of the idling rollers 11 in the non-collapsing state.

Further, as shown in FIG. 3, the gripping member 8 or 9 has a gripping body 24 or 25, and two dice portions 26 having different inner diameters and having a corrugated gripping surface a or b for the flexible tube 1. ,27 or 2
8 and 29, and the die part 2
6, 27 or 28, 29 can be selectively replaced with respect to the gripping main body 24 or 25 by screws 30 or 3 for tightening and fixing them in the gripping state.
1 to grasp the flexible tubes 1 having different inner diameters as described above, as shown in FIG.
As shown in FIG.
29 are replaced respectively so that the flexible tube 1 can be gripped securely.

Among the gripping members 8 and 9, one gripping member 9
is fixed to the support frame 7, and the other gripping member 8 is pivotably attached to the support frame 7, and the screw 30 tightens and fixes both gripping members 8 and 9 in a gripped state. , 31, the die parts 26, 27 or 28, 29
can be selectively attached to the grip main body 24 or 25.

In addition, 32 shown in FIG. 2 is a felt for preventing rattling of the screw shaft 13, and this felt 32
are installed after thoroughly soaking them in spindle oil or machine oil.

[Another example]

In the embodiment described above, four idle rollers 11 were provided, but two, three, or five or more may be provided.

Further, in the above embodiment, the inclined guide surfaces 22A and 22B were formed at both ends of two of the four idle rollers 11, but when one or more idle rollers 11 Inclined guide surface 22A, respectively.
22B may also be formed.

Further, in the above embodiment, the grip main body (24 or 2
5), a plurality of die parts (2
6, 27 or 28, 29) to reliably grip the corrugated flexible tube 1 having a different diameter, it is possible to adjust the movement in the radial direction of the corrugated flexible tube 1 to be gripped using a screw mechanism or the like. A plurality of possible gripping members may be provided to grip the corrugated flexible tube 1. In short, the corrugated flexible tube 1 can be reliably gripped regardless of its diameter. Good to have,
The shape and structure of the gripping member can be freely changed.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 to 6 show an embodiment of the corrugated flexible tube crushing tool according to the present invention, FIG. 1 is an exploded perspective view showing the attachment part of the idle roller, and FIG. 2 is a partially cutaway side view. , FIG. 3 is a sectional view taken along the line - in FIG. 2, FIGS. 4A and 4B are partially cutaway vertical side views showing the flexible tube in a collapsed state, and FIG. 5 is a partially cutaway side view of the flexible tube. FIG. 6 is a partially cutaway side view showing the tube connected state. 1... Corrugated flexible tube, 8, 9... Gripping member, 10
... Rotating body, 11 ... Idle roller, 19 ... Support shaft, 22A, 22B ... Inclined guide surface, 24, 25
...Gripping member, 26, 27, 28, 29...Dice part, 33...Biasing member, A...Crushing part, a, b
...Corrugated sandwiching surface.

Claims (1)

[Claims for Utility Model Registration] 1. A fixed gripping part C that grips the corrugated flexible tube 1, and an end of the corrugated flexible tube 1 gripped by the fixed gripping part C. a crushing part A that is crushed by moving close to C, and the crushing part A is
A rotating body 10 that rotates around an axis that is the same as or approximately the same as the axis of the corrugated flexible tube 1, and a plurality of rotary bodies that rotate on the end surface of the corrugated flexible tube 1 as the rotary body 10 rotates. an idling roller 11, and an inclined guide surface 2 whose diameter increases toward the end at the end of at least one idling roller 11 of the group of idling rollers 11 on the tube axis side.
2A, in which an idling roller 11 provided with the inclined guide surface 22A is slidable in the pipe radial direction with respect to a support shaft 19 provided on the rotary body 10. A biasing member 33 is provided which is fitted onto the outside of the idler roller 11 to bias the idler roller 11 toward the rotational axis of the rotating body 10, and the other end of the idler roller 11 provided with the inclined guide surface 22A , upon contact with the end of the large-diameter corrugated flexible tube 1, the idling roller 11 is pressed against the biasing member 33.
This crushing tool for a corrugated flexible tube is formed with an inclined guide surface 22B whose diameter becomes larger toward the end thereof in order to guide the rotating body 10 toward the side away from the rotational axis against the biasing force of the tube. 2 The fixed grip part C is attached to the support frame 7
The waveform according to claim 1 of the utility model registration claim is constituted by a pair of gripping members 8 and 9 that can freely switch between a gripping state and a gripping release state of the corrugated flexible tube 1. Crushing tool for flexible tubes. 3 The gripping members 8 and 9 are the gripping main body 24 or 25
and a plurality of die portions 2 having different inner diameters and having a corrugated clamping surface a or b for the corrugated flexible tube 1.
6, 27 or 28, 29, and the die portions 26, 27 or 28, 29
The crushing tool for a corrugated flexible tube according to claim 2, which is configured to be selectively replaceable with respect to the grip main body 24 or 25.