JPH08174319A - Device for eliminating metallic chip from inside of bored pipe - Google Patents

Abstract

PURPOSE: To provide a metal chip eliminating device easily inserted into and pulled out of a pipe when metal chips scattered in the pipe passage are eliminated and capable of surely recovering attracted chips. CONSTITUTION: A metal chip eliminating device is constructed in a manner that a spherical magnet 2 for attraction metal chips is fixed to one end of a flexible connecting member 3, the other end of the flexible connecting member 3 is incorporated and fixed in a rodlike core material 5 and the rodlike core material 5 is inserted so as to be slid into an external pipe member 6 having an expanded diameter section 4 for housing the spherical magnet 2 in its tip. When used, the eliminating device is inserted into a pipe with the spherical magnet 2 kept housed in the expanded diameter section 4 of the external pipe member, the rodlike core material 5 is then pushed so as to expose the spherical magnet 2 inside the pipeline, chips are attracted by moving the spherical magnet 2 in the pipe and after attraction thereof, the rodlike core material 5 is pulled so as to house the spherical magnet 2 in the expanded diameter section 4 and the eliminating device is pulled out of the pipeline.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing metallic chips from a perforated pipe, and more particularly to a device that scatters in a pipe when a hole is bored in a metallic pipe. The present invention relates to a metallic chip removing device that removes powder using a magnet.

[0002]

2. Description of the Related Art The gas used in each home is supplied through a supply pipe and a supply pipe branching from a main pipe buried under a road. When pulling in the supply pipe from the main pipe, it is common to take a cutoff at one point of the main pipe that is affected by the branch work, and stop the normal gas supply before performing the branch work. It is also required to carry out branching work while maintaining normal gas supply. When laying a supply pipe, usually, first, an opening portion as a construction site is provided on the main pipe by cutting means, and the supply pipe is connected to the main pipe in accordance with the opening portion thus formed. Pull in to customers.

However, when the gas main is an iron pipe,
When a drilling operation is performed on the main pipe by a cutting means, chips (pieces) are scattered in the pipe. Since this type of cutting chips has a small particle size, they may be carried in the subsequent gas flow and flowed into the customer if they are not removed immediately and thoroughly after the drilling work. Such chips easily enter the gas appliances and hinder the daily use of gas.

In order to solve the above-mentioned problems, the present applicant has previously proposed a metallic chip removing device described in Japanese Patent Application No. 6-179238.

As shown in FIG. 4, this prior art metallic chip removing device has a rod-shaped body 32, a spherical magnet 34 for adsorbing iron chips, and a spherical magnet 34 at the tip of the rod-shaped body 32. And a coiled spring 33 that is movably connected to the section.

When removing the chips scattered in the pipe by using the above-mentioned prior art metallic chip removing device, the metallic chip removing device is inserted into the pipe line P through the opening 37, The chips are adsorbed by moving the spherical magnet 34 in the pipe, and then the metallic chip removing device is pulled back from the pipe P to collect the chips adsorbed by the spherical magnet 34.

[0007]

By the way, the above-described prior art metallic chip removing apparatus has some problems as described below.

First, since the metallic chip removing device is constructed by connecting the spherical magnet 34 to the tip of the rod-shaped body 32 by the coil-shaped spring 33, the pipe P is passed through the opening 37. When it is inserted into the inside, the magnet and the coil spring are opened, the opening 37, the joint inner wall 36, the shutter device 31.
It is difficult to pass because it gets caught in (thing used when branching work while maintaining normal gas supply).
Further, since the coiled spring 33 cannot hold the spherical magnet 34 in the horizontal direction, the spherical magnet 34 not only hits the opening portion 37 and causes friction, but also is attracted to the opening portion by magnetic force. Various problems have occurred when inserting the chip removing device into the pipeline.

The second is that when the metallic chips removed from the pipe P are adsorbed and then the metallic chip removing device is pulled back from the pipe P, the spherical magnet 34 opens the hole 37 and the joint. Since it collides with the inner wall 36 and the shutter device 31, the spherical magnet 3
The metal chips adsorbed on the surface of No. 4 fall into the pipe again, and eventually the purpose of removing the metal chips fallen into the pipe line cannot be achieved.

In view of the above-mentioned problems, the present invention can easily insert metal chips scattered in a pipe into the pipe and withdraw it from the pipe, and remove the adsorbed chips. It is an object of the present invention to provide a metallic chip removing device that can be reliably recovered.

[0011]

In order to achieve the above object, a metallic chip removing device according to the present invention is provided with an outer pipe member having a diameter-expanded portion at its tip and slidable on the outer pipe member. The rod-shaped core member is inserted, the flexible connecting member is fixed to the lower end portion of the rod-shaped core member, and the spherical magnet is fixed to the lower end portion of the flexible connecting member. When removing the chips inside, insert the chip removing device into the duct from the opening with the spherical magnet housed in the expanded diameter portion of the outer pipe member, and after inserting into the duct, the rod shape The core material is pushed toward the inside of the conduit to expose the spherical magnet inside the conduit, and the flexibility of the flexible connecting member causes the spherical magnet to move within the conduit to adsorb the chips, and after the adsorption is completed, the spherical magnet is removed. Insert the rod-shaped core material so that it can be accommodated in the expanded portion. It can be characterized by being adapted to complete the chip removing work by pulling back the chip removing device from conduit.

Further, the present invention is characterized in that a plurality of flexible connecting members having different flexibility are prepared and the plurality of connecting members can be replaced with each other as necessary. Is.

[0013]

In the metallic chip removing device according to the present invention, the rod-shaped core member is inserted into the outer pipe member having the enlarged diameter portion at the tip thereof, and one end of the flexible connecting member is internally fixed and fixed to the lower portion of the rod-shaped core member. Since a spherical magnet that adsorbs metallic chips is fixed to the other end of the elastic coupling member, the spherical magnet is used when removing the chips in the pipe using the metallic chip removing device. It becomes possible to smoothly insert the chip removing device into the pipe through the opening while it is still accommodated in the expanded diameter portion of the outer pipe member.

Therefore, the metallic chip removing device of the present invention is
When the magnet is inserted into the pipe P through the opening, it is avoided that the magnet is caught in the opening, the inner wall of the joint, and the shutter device, and the magnet causes magnetic force to the opening of the pipe, the inner wall of the joint, and the shutter device. Since adsorption is also avoided, various problems can be prevented when the metal chip removing device is inserted into the pipeline.

Further, when the metallic chips removed from the pipe P are adsorbed and then the metallic chip removing device is pulled back from the pipe P, the spherical magnet is housed in the expanded portion of the outer pipe member. As a result, the spherical magnet does not collide with the opening, the inner wall of the joint, and the shutter device, and the risk that the metallic chips adsorbed on the surface of the magnet fall into the pipe again is eliminated.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view showing a cross section of a main part of the metallic chip removing device according to the present invention, FIG. It is explanatory drawing which shows another usage condition of the metal-chip removal apparatus of this invention.

In FIG. 1, reference numeral 1 indicates a metallic chip removing device of the present invention. As shown in FIG. 1, in the metallic chip removing device 1, a spherical magnet 2 for adsorbing metallic chips is fixed to one end of a flexible connecting member 3, and the other end of the flexible connecting member 3 is a rod-shaped core material. 5, the rod-shaped core member 5 is fixedly built in, and the rod-shaped core member 5 can accommodate the spherical magnet 2.
It is configured to be slidably inserted in an outer pipe member 6 having a tip.

The spherical magnet 2 is a manganese-aluminum-carbon magnet. The magnet has a spherical shape, and its entire spherical surface can adsorb metallic chips.
It should be noted that magnets made of other materials can be used as needed, such as W steel or Cr steel as magnet steel, or Co / W / Cr / C magnet steel.

A plurality of flexible connecting members 3 having different flexibility are prepared, and the plurality of connecting members can be replaced with each other as necessary. For example, a flexible wire and a spring steel flat plate are prepared, and a male member (not shown) is attached to the rod-shaped core member 5.
By providing the female screw coupling means, the wire and the spring steel flat plate can be replaced with each other.

The length of the rod-shaped core member 5 inserted into the outer pipe member 6 is longer than the length of the outer pipe member 6, and has a size that allows an operator to manually operate it. Further, the operation handle 8 is provided at the base end of the rod-shaped core material 5.
Is provided.

FIG. 2 shows the usage state of the metallic chip removing device 1. When removing the metallic chips 11 in the pipe using the metallic chip removing device 1, the spherical magnet 2 is kept in the expanded diameter portion 4 of the outer pipe member 6 and The chip removing device 1 is inserted through the shutter device 12, the inner wall 13 of the joint, and the opening 7 into the pipe line P. After inserting into the pipe, the rod-shaped core member 5 is pushed inward along the inner wall of the outer pipe member 6 by the operation handle 8 to expose the spherical magnet 2 in the pipe passage, and the spherical magnet 2 is moved in the pipe passage P. As a result, the chips 11 are adsorbed. After the adsorption is completed, the rod-shaped core material 5 is pulled by using the handle 8 so that the spherical magnet 2 having the chips adsorbed on the surface is housed in the expanded diameter portion 4, and the metallic chip removing device 1 is pulled back from the inside of the conduit P. This completes the chip removal work.

The use state of FIG. 2 shows a case where the opening portion 7 is provided on one side of the conduit P, and the flexible connecting member 3 used at that time has high flexibility. It is a flexible wire. By using a highly flexible wire, when the rod-shaped core material 5 is extruded into the tube as shown in FIG. 2, the spherical magnet 2 hangs down due to the gravitational action at the location where the chips are falling. By moving the magnet 2 in the tube by the flexibility, it is possible to surely adsorb the metal chips generated during the drilling work.

FIG. 3 shows another usage state of the metallic chip removing device 1. As shown in FIG. 3, the opening portions 7 are provided on both upper and lower sides of the pipeline P, and the chips 11 generated during the drilling work are falling into the pipeline below the both opening portions 7. Flexible connecting member 3 used at that time
May have a lower flexibility than that shown in FIG. 2, for example a spring steel flat plate can be used. At that time, as shown in FIG. 3, when the rod-shaped core material 5 is pushed into the tube, the spherical magnet 2 reaches the place where the chips are falling, and the flexibility of the spring steel flat plate causes the magnet 2 to move in the tube to open a hole. It is possible to surely adsorb the metal chips generated during the work.

[0024]

In the metallic chip removing device of the present invention, the rod-shaped core member is inserted into the outer pipe member having the enlarged diameter portion at the tip, and one end of the flexible connecting member is internally fixed to the lower portion of the rod-shaped core member. Since a spherical magnet for adsorbing metallic chips is fixed to the other end of the flexible connecting member, a spherical shape is used when removing the chips in the pipe using the metallic chip removing device. It becomes possible to smoothly insert the chip removing device into the tube through the opening while keeping the magnet accommodated in the expanded diameter portion of the outer pipe member.

Therefore, the metallic chip removing device of the present invention is
When the magnet is inserted into the conduit P through the opening, it is avoided that the magnet is caught in the opening, the inner wall of the joint, and the shutter device, and the magnet is attracted to the opening of the tube due to the magnetic force. Since it is avoided, various problems can be prevented when the metal chip removing device is inserted into the pipeline.

When the metallic chips removed from the pipe P are adsorbed and the metallic chip removing device is pulled back from the pipe P, the spherical magnet is housed in the expanded portion of the outer pipe member. As a result, the spherical magnet does not collide with the opening, the inner wall of the joint, and the shutter device, and the risk that the metallic chips adsorbed on the surface of the magnet fall into the pipe again is eliminated.

By using the above-described metallic chip removing device of the present invention, the removing device can be smoothly inserted into the pipe and pulled back from the inside of the pipe, and metal generated during the drilling work and scattered in the pipe line. It becomes possible to surely remove the swarf from the duct.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a cross section of a main part of a metallic chip removing device according to the present invention.

FIG. 2 is an explanatory view showing a usage state of the metallic chip removing device of the present invention.

FIG. 3 is an explanatory view showing another usage state of the metal chip removing device of the present invention.

FIG. 4 is an explanatory view showing a usage state of the metallic chip removing device in the related art.

[Explanation of symbols]

 1 Metallic Chip Removal Device 2 Spherical Magnet 3 Flexible Connecting Member 4 Expanding Portion 5 Rod-shaped Core Material 6 Outer Pipe Member 8 Handle

Claims (2)

[Claims] 1. A metallic chip removing device for removing chips scattered in a pipe to the outside of a pipe when a hole is drilled in the metallic pipe. An outer pipe member having an enlarged diameter portion, a rod-shaped core member slidably inserted in the outer pipe member, a flexible connecting member fixed to a lower end portion of the rod-shaped core member, and the flexible connecting member. It is composed of a spherical magnet fixed to the lower end of the, and when removing the chips in the duct, the chip removing device can be used with the spherical magnet housed in the expanded portion of the outer pipe member. Insert the tube into the conduit through the opening, then push the rod-shaped core material toward the inside of the conduit to expose the spherical magnet to the inside of the conduit, and use the flexibility of the flexible connecting member to connect the spherical magnet to the conduit. The chips are adsorbed by moving inside, and after adsorption is completed,
The rod-shaped core material is drawn so as to accommodate the spherical magnet in the expanded diameter portion, and the chip removing operation is completed by pulling back the chip removing device from the pipe line. A device that removes hard chips. 2. The flexible connecting member includes:
The apparatus for removing metallic chips from a perforated pipe according to claim 1, wherein a plurality of flexible members having different flexibility are prepared, and the plurality of connecting members are replaced with each other as necessary.