JP2004036729A - Chip collector in steady water cutting-off equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chip collector in a steady water cutting-off equipment capable of securely and easily taking chips out to its exterior without dispersing the chips which are captured during cutting when cutting operation is over. <P>SOLUTION: The device is the chip collector which cuts off a feed water pipe P by cylindrical cutter C in state of steady water by covering the feed water main pipe P by an enclosed housing 1. The device is configured so that the cylindrical cutter C, locating when the feed water main pipe P is completed to cut off, retains a receptacle 10 for the chips disposed on the enclosed housing 1 near its tip portion, thereby can take the chips captured in the receptacle 10 for the chips during cutting out to its exterior without dispersing them after taking the cylindrical cutter C out when the feed water main pipe P is completed to cut off. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a chip recovery device in an uncut water cutting device that covers a fluid tube with a sealed housing and cuts the fluid tube with a cylindrical cutter in an uncut state.
[0002]
[Prior art]
FIG. 7 is a cross-sectional view showing a chip discharging means in a conventional fluid-free cutting device for cutting a fluid pipe in a sealed state. A sealed housing 01 is provided with an additional pipe section 02 covering a water supply main pipe P and a vertical projection. A part of the water supply main pipe P is formed by lowering the drilling machine 05 having the cylindrical cutter C along the drilling tube part 03, which is composed of the provided drilling tube part 03 and the branch tube part 04 connected to the branch pipe T. Are cut as cut pieces R. The chips generated during the cutting are accumulated below the perforated tube portion 03, and the chips can be discharged to the outside via the drain pipe 07 by opening the water stop valve 06.
[0003]
[Problems to be solved by the invention]
However, such a conventional chip collecting means requires not only to provide a drain pipe 07 and a water stop valve 06 to collect the chips, but also to increase the cost, and to stop at a timing of draining after cutting. It took time to open and close the water valve 06. Furthermore, since the fluid is discharged by the fluid flow, there is a problem that light chips among the chips accumulated under the perforated tube portion 03 fly up and are separated.
[0004]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a chip collecting device in an uncut water cutting device that can reliably and easily take out the chips captured during cutting without separating the chips at the end of cutting. It is intended to be.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a chip recovery device in a continuous water cutting device according to the present invention includes a cutting device in a continuous water cutting device that covers a fluid pipe with a sealed housing and cuts the fluid pipe with a cylindrical cutter in a waterless state. In the waste collecting apparatus, the cylindrical cutter positioned at the end of cutting the fluid pipe holds a chip tray disposed in the sealed housing in a vicinity of a tip thereof.
According to this feature, by holding and taking out the chip tray with the cylindrical cutter at the end of cutting the fluid pipe, the chips captured in the chip tray during cutting can be taken out without being separated. .
[0006]
In the chip recovery device of the present invention, it is preferable that the chip tray is immovably mounted substantially horizontally on the bottom surface of the sealed housing.
With this configuration, since the chip tray is mounted immovably in the substantially horizontal direction, the cylindrical cutter can catch the chip tray at an accurate position.
[0007]
In the chip recovery device of the present invention, the chip tray may be held by at least two holding pieces protruding toward the center from the inner surface of the cylinder at least after cutting is completed. preferable.
With this configuration, the cutting tray can be securely held and collected by the holding pieces after the cutting is completed.
[0008]
The chip collecting device in the continuous water cutting device according to the present invention is characterized in that the chip tray has an elastic ring body in which a ring-shaped groove formed on the inner peripheral surface of the cylindrical cutter is provided on an outer peripheral surface of the chip tray. It is preferable to be held by engaging with.
According to this configuration, since the cylindrical cutter has only the ring-shaped groove as the holder, the rotary motion can be smoothly performed without any resistance during the cutting operation.
[0009]
In the chip recovery device of the present invention, it is preferable that the cylindrical cutter is provided with a filter through which fluid can pass but chips cannot flow.
In this way, the flow of the fluid can be ensured, and at the same time, the chips taken into the cylindrical cutter can be accumulated in the chip tray disposed below the cutter.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a chip collecting device in the continuous water cutting device of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view showing a chip discharging means in the continuous water cutting apparatus, FIG. 2 is an enlarged cross-sectional view of a portion A of FIG. 1, and FIG. 3 is an enlarged cross-sectional view of a portion B of FIG.
[0011]
In FIG. 1, reference numeral 1 denotes a sealed housing. The sealed housing 1 includes an additional pipe portion 2 that covers a water supply main pipe P, which is an existing fluid pipe, a perforated cylindrical portion 3 that is vertically provided, and a branch pipe. By lowering the cylindrical cutter C, which is composed of a branch tubular portion 4 connected to T and rotatably driven below the drilling machine 5, along the drilling tubular portion 3, a part of the water supply main pipe P is formed. It is designed to be cut as a cut piece R.
[0012]
A chip receiving tray 10 is supported on the rotation center axis line of the cutter C below the perforated cylindrical portion 3, and the chip receiving tray 10 is at the lower end after the cutting process by the cutter C is completed. At this time, the cutter C is positioned and held in a state of being inserted close to the inner periphery of the cutting edge C2 of the cutter C.
[0013]
That is, a support shaft 8 having a predetermined height and having a tapered tip protrudes from the upper surface of the central portion of the bottom plate 3a that seals the lower surface of the perforated tube portion 3. A support cylinder 12 protruding below the center of the lower surface of the chip receiving tray 10 is inserted into the support shaft 8 so that the chip receiving tray 10 is positioned at a predetermined height with respect to the bottom surface of the sealed housing. It is positioned and is immovably mounted in a substantially horizontal direction.
[0014]
The chip receiving tray 10 is formed in a shallow bottom cylindrical shape, and a plurality of through-holes 10b are formed in the bottom plate 10a on the same circumference, and these through-holes 10b are processed by at least the cutter C. A wire mesh 11 serving as a mesh filter through which the chips of the water supply main pipe P cannot pass is stretched.
[0015]
On the other hand, as shown in FIG. 2, the cutter C has a plurality of through-holes C1 formed on the circumference of the cylindrical body side wall, and these through-holes C1 are attached to the through-holes 10b of the chip receiving tray 10. A wire mesh 6 of the same type as the wire mesh 11 serving as the provided filter is attached.
[0016]
Further, in the vicinity of the cutting edge C2 formed at the lower end of the circumference of the cutter C, vertically long grooves C3 are formed on the opposing surface of the cylindrical inner wall as shown in FIG. 3, and are held in these vertically long grooves C3. The lower end is pivotally pivoted by a pivot 15 into the groove C3 so that the locking claw 14 configured as a piece is completely seated.
[0017]
The locking claw 14 is formed in a plate shape, and a supporting portion at a tip thereof is twisted by about 90 degrees from a pivoted portion pivotally attached to the pivot 15, and the tip thereof is provided inside the cutter C by a torsion coil spring T <b> 1. Are biased so as to protrude toward the center.
[0018]
Accordingly, when the water supply main pipe P is cut by the cutter C, when the locking claw 14 passes through the cut point of the water supply main pipe P, it comes into contact with the inner and outer peripheral surfaces near the cut point of the water supply main pipe P. Since it is guided by the torsion surface and is completely housed in the groove C3 against the urging force of the torsion coil spring 15, it can pass through the cut portion of the water supply main pipe P.
[0019]
Next, the operation of the chip collecting device configured as described above will be described with reference to FIGS.
[0020]
First, by driving the drilling machine 5 shown in FIG. 1, the cylindrical cutter C starts rotating downward at a predetermined cutting speed and starts to descend along the drilling tube portion 3, and the cutting edge C2 at the lower end of the cutter C is started. As a result, the cutting process is started from the upper side surface of the water supply main pipe P.
[0021]
The water in the water supply main pipe P leaked to the outside from the cut portion of the water supply main pipe P, which is cut as the cutter C is moved downward at a predetermined feed speed by the drilling machine 5, flows into the sealed housing or the branch pipe T. I do.
[0022]
At the same time, the chips generated in the cutter C at the time of cutting are supported in a substantially horizontal direction by the support shaft 8 protruding from the bottom plate 3a of the sealed housing 3 below the inside of the cylindrical cutter C and are standing by in a standby state. It is stored in the receiving tray 10.
[0023]
Further, when the water flowing into the perforated cylinder portion 3 to the cutter C flows back into the water supply main pipe P again through the plurality of through-holes C1, the chips floating in the tap water in the cutter C are removed by the wire mesh 6. Thus, the outflow to the water supply main pipe P is prevented.
[0024]
Further, when the cutting process is performed by the cutter C, the locking claw 14 may be projected substantially horizontally inside the cutter C by the biasing force of the torsion coil spring T1. When the locking claw 14 passes through the cut portion, the twisted surface of the locking claw 14 is guided by the inner and outer surfaces of the water supply main pipe P, and is completely accommodated in the vertically elongated groove C3.
[0025]
Next, when the cutter C is further lowered after the cutting process by the cutter C is completed, the inner peripheral wall of the cutting edge C2 passes in a state close to the outer periphery of the chip receiving tray 10, and then a pair of locking claws 14 on the inner wall of the cutter C. Immediately after passing through, the locking claw 14 is held in a horizontal state by contact with the inner bottom surface of the groove C3 by the urging force of the torsion coil spring T1.
[0026]
Next, the cutter C is pulled up by the operation of the drilling machine 5. At this time, the chip receiving tray 10 is pulled up together with the cutter C with the lower surface of the chip receiving tray 10 supported by the pair of locking claws 14. The cut piece R of the cut water supply main pipe P is also pulled up and collected together with the cutter C.
[0027]
As a result, a series of processing by the continuous water cutting device is completed, and chips generated at the time of cutting or cut pieces R of the water supply main pipe P are collected by the chip receiving tray 10.
[0028]
Therefore, according to the above-mentioned embodiment, by holding and taking out the chip tray 10 by the cylindrical cutter C at the end of the cutting of the water supply main pipe P, the chips captured in the chip tray 10 during cutting can be removed. Can be taken out without being separated, and the cut pieces of the water supply main pipe P that have been cut at the same time can be taken out by the chip receiving tray 10.
[0029]
In addition, since the chip tray 10 is mounted immovably in the substantially horizontal direction with respect to the bottom plate 3 a of the sealed housing 3, the chip tray 10 can be accurately captured inside the cylindrical cutter C. it can.
[0030]
Furthermore, since the chip receiving tray 10 is configured to be held by the two locking claws 14 protruding toward the center from the inner surface of the cylindrical cutter C, the chip receiving tray 10 is securely held. Can be retained and collected.
[0031]
Next, another embodiment of the chip collecting device in the continuous water cutting device will be described with reference to FIGS. The same components as those in the above embodiment are denoted by the same reference numerals, and redundant description will be omitted. FIG. 4 is a horizontal sectional view of a cylindrical cutter provided with a locking claw, and FIG. 5 is a vertical cross-sectional view of the cylindrical cutter showing a state where a chip receiving tray is supported by the locking claw.
[0032]
One end of a plate-shaped engaging claw 16 indicated by reference numeral 16 is pivotally attached to a pivot 20 so as to be able to pivot horizontally. When an external force is applied, the plate-shaped engaging claw 16 is circumferentially opposed to the inner surface of the cylinder of the cutter C. It is configured to completely fit in a pair of grooves 18 formed along.
[0033]
The locking claw 16 is urged by a torsion coil spring T2 to protrude toward the center of the inside of the cutter C as in the above-described embodiment. Note that the locking claw 16 according to the present embodiment has the same operation and effect as those of the above-described embodiment, and thus redundant description will be omitted.
[0034]
Next, still another embodiment of the chip collecting device will be described with reference to FIG. FIG. 6A is a longitudinal sectional view of a cylindrical cutter showing a state in which a chip tray according to still another embodiment of the chip recovery device is engaged and held.
[0035]
Reference numeral 22 shown in the figure denotes an elastic ring body having a circular cross section made of a material such as rubber which can be elastically deformed. The elastic ring body 22 is held in a ring-shaped groove 25 below the outer periphery of the chip receiving tray 10 '. The outer peripheral portion of the elastic ring body 22 is configured to protrude from the outer peripheral surface of the chip receiving tray 10 '.
[0036]
The chip receiving tray 10 ′ according to the present embodiment is configured such that the elastic ring body 22 compressed when the cutter C passes through the outer periphery of the chip receiving tray 10 ′ by the lowering action of the cutter C, When it matches the ring-shaped groove 24 formed on the inner peripheral surface, the ring-shaped groove 24 is engaged with the restoring force.
[0037]
The elastic ring body 22 can support the weight of the chip receiving tray 10 ′ or the weight of the chips stored in the chip receiving tray 10 ′ and the partially cut pieces R of the water supply main pipe P. It shall have a holding power.
[0038]
Therefore, according to the chip collecting device according to the present embodiment configured as described above, since only the ring-shaped groove 24 is formed in the cylindrical cutter C as a holding tool, the water supply main pipe P In the cutting operation, the cutting can be performed smoothly without any resistance when the cylindrical cutter C passes through the cutting portion.
[0039]
Next, still another embodiment of the chip collecting device will be described with reference to FIG. FIG. 6B is a longitudinal sectional view of a cylindrical cutter showing a state in which a chip tray is engaged and held, according to still another embodiment of the chip recovery device.
[0040]
Reference numeral 26 shown in the figure is a holding piece formed of, for example, a leaf spring, and is vertically extended in a state in which the holding piece is projected and urged outward on an opposing outer peripheral surface near the bottom plate 10a of the chip receiving tray 10 ''. Installed.
[0041]
Each of the holding pieces 26 has an inclined portion 26a formed in an upper portion, and a locking claw 26b whose lower end portion is bent horizontally.
[0042]
On the other hand, a ring-shaped engagement groove 28 is formed on the inner peripheral wall surface near the cutting edge C2 of the cutter C, and the holding piece is used when the cutter C passes through the chip receiving tray 10 '' by the descending action of the cutter C. 26 is compressed by the inner peripheral wall surface of the cutter C to the position indicated by the two-dot chain line, and when the holding piece 26 reaches the engaging groove 28, it enters the engaging groove 28 by a return elastic action that expands outwardly of the holding piece 26 itself. I do.
[0043]
Next, when the cutter C ascends, the pair of locking claws 26b at the lower end of the holding piece 26 that has entered the engagement groove 28 engage with the lower end of the engagement groove 28, and the chip receiving tray 10 '' is thereby removed. Can be lifted.
[0044]
Note that the holding piece 26 according to the present embodiment has the same operation and effect as the elastic ring body 22 of the above embodiment, and thus redundant description will be omitted.
[0045]
In addition, the locking claws 14, 16 and the holding piece 26 described in the above-described embodiment have been described as a configuration in which a pair is arranged at a position facing the inner surface of the cutter C or the outer peripheral surface of the chip receiving tray 10, but is not limited thereto. However, the arrangement is not limited to a pair in order to provide an arrangement that can be stably held.
[0046]
【The invention's effect】
The present invention has the following effects.
[0047]
(A) According to the first aspect of the invention, at the end of cutting the fluid pipe, the chip tray is held and taken out by the cylindrical cutter, so that the chips trapped in the chip tray during cutting are separated. It can be taken out without the need.
[0048]
(B) According to the second aspect of the present invention, since the chip tray is immovably mounted substantially horizontally, the cylindrical cutter can catch the chip tray at an accurate position.
[0049]
(C) According to the third aspect of the present invention, after the cutting is completed, the chip receiving tray can be securely held and collected by the holding piece.
[0050]
(D) According to the fourth aspect of the present invention, since only the ring-shaped groove is formed on the cylindrical cutter as a holder, the rotating motion can be smoothly performed without any resistance during the cutting operation. I can do it.
[0051]
(E) According to the fifth aspect of the present invention, while ensuring the flow of the fluid, the chips taken in the cylindrical cutter can be accumulated in the chip tray disposed below the cutter.
[Brief description of the drawings]
FIG. 1 is a chip recovery device according to an embodiment of the present invention, which is a cross-sectional view showing chip discharge means.
FIG. 2 is an enlarged sectional view of a portion A in FIG.
FIG. 3 is an enlarged sectional view of a portion B in FIG. 1;
FIG. 4 is a horizontal cross-sectional view of a cylindrical cutter provided with locking claws according to another embodiment of the chip recovery device in the continuous water cutting device of the present invention.
FIG. 5 is a longitudinal sectional view of the cylindrical cutter showing a state in which a chip tray is supported by a locking claw.
FIG. 6 relates to still another embodiment of the chip collecting device in the continuous water cutting device of the present invention, and (a) shows a chip receiving tray according to still another embodiment of the chip collecting device engaged and held. FIG. 3B is a vertical cross-sectional view of a cylindrical cutter showing a state in which the cutting tool is engaged, and FIG. FIG.
FIG. 7 is a cross-sectional view showing a chip discharging means in a conventional non-water cutting device for cutting a fluid pipe in a sealed state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sealing housing 2 Attached pipe part 3 Sealed housing 3a Bottom plate 3 Perforated cylinder part 4 Branch cylinder part 5 Punching machine 6 Wire mesh (filter)
8 Support shaft 10 Chip receiving tray 10a Bottom plate 10b Through hole 11 Wire mesh 12 Support cylinder 14 Locking claw 15 Axis 16 Locking claw 18 Groove 20 Axis 22 Elastic ring bodies 24, 25 Ring-shaped groove 26 Holding piece 26a Inclined portion 26b Retaining claw 28 Engagement groove C Cylindrical cutter C1 Through hole C2 Cutting edge C3 Groove P Water supply main pipe R Cut piece T Branch pipe

Claims (5)

A chip collecting device in an uncut water cutting device that cuts the fluid tube with a cylindrical cutter in an uncut state while covering the fluid tube with a sealed housing,
The chip collecting device in the continuous water cutting device, wherein the cylindrical cutter, which is located at the end of cutting the fluid pipe, holds a chip tray disposed in the hermetically sealed housing in the vicinity of the tip. The chip recovery device according to claim 1, wherein the chip receiving tray is immovably mounted in a substantially horizontal direction with respect to the bottom surface of the sealed housing. The chip recovery in the waterless cutting device according to claim 1, wherein the chip receiving tray is held by at least two or more holding pieces projecting toward the center from the inner surface of the cylinder at least after cutting is completed. apparatus. 3. The chip receiving tray is held by engaging a ring-shaped groove formed on the inner peripheral surface of the cylindrical cutter with an elastic ring body provided on an outer peripheral surface of the chip receiving tray. 3. A chip collecting device in the continuous water cutting device according to 1. The chip collecting device in the continuous water cutting device according to any one of claims 1 to 4, wherein the cylindrical cutter is provided with a filter through which fluid can pass but chips cannot flow.

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