JPH08290302A - Coating material chip eliminator - Google Patents

Abstract

PURPOSE: To suck a spiral string-like chip easily without twining around the machined surface of cut material by additionally providing a rotary blade, rotated along with a rotary shaft, on the outlet side of a suction path, and arranging a fixed blade at a supporting body for supporting the rotary blade rotatably. CONSTITUTION: The tip of a chip 2 is led into a suction nozzle 7, and the chip 2 is sucked into a suction path 8 by the suction force of a suction device 12. There is therefore no problem of the spiral string-like chip 2 clinging to the machined surface of cut material 3. The chip 2 sucked into the suction path 8 is sucked out into a hollow part 16 from the outlet side of the suction path 8 through the conical hole of a rotary blade 5. The instant that the rotary blade 5 rotated along with a rotary shaft passes the inside of a fixed blade 4, the cutting edge of the fixed blade 4 comes in contact with the smooth surface of the rotary blade 5 so as to close the hole of the rotary blade 5, and the chip 2 is cut by shearing action at this time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating material cutting scrap removing device. An object to be cut that has a covering material is a linear object, and an electric cable is an example of the object to be cut. In that case, the covering material to be cut is a polymer material or a soft material.

[0002]

2. Description of the Related Art FIG. 3 shows a cutting procedure of a covering material (for example, an outer semiconductive layer) of a cable 3 which is a work to be cut.
By rotating the cutting blade 1 in the circumferential direction A of the cable 3 and moving it in the longitudinal direction B, the covering material is cut into a spiral cord shape. Reference numeral 2'denotes finely cut cutting waste finely cut by cutting.

[0003]

According to the above-mentioned cutting technique, since the cutting waste 2 is formed in the shape of a spiral cord, as the cutting work progresses in the longitudinal direction of the work piece 3, the cutting waste as shown in FIG. 2 was an exposed part after cutting; there was a problem that it was entangled with the processed surface. In order to solve this problem, conventionally, the operation of the apparatus is stopped after the cutting is completed or during the cutting, and the jig is manually removed using a jig such as a knife. for that reason,
There is a risk of damaging the machined surface and hand injury to the operator. When the object to be cut is an electric cable, the processed surface also becomes an important part in terms of electric characteristics, and thus the damage as described above poses a serious problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a coating material cutting dust removing device capable of continuously and automatically removing spiral cord-shaped cutting dust outside the cutting device.

[0005]

SUMMARY OF THE INVENTION In a coating material cutting waste removal device provided by the present invention, a cutting blade for the coating material of an object to be cut is moved in the longitudinal direction of the coating material while rotating in the circumferential direction of the coating material. In the coating material cutting mechanism that cuts the coating material into a spiral cord shape, a suction nozzle and a suction path connected to this suction nozzle are provided on a cylindrical rotary shaft that supports the cutting blade, and the rotary shaft is provided on the outlet side of this suction path. A rotary blade that rotates together with the rotary blade is attached, and the fixed blade is placed on the support that rotatably supports the rotary shaft. It is something that is done.

[0006] It is preferable that the support is formed in a tubular shape so as to have a cavity on the rotating shaft and is provided with a suction port, and the suction device is connected to this suction port. It is preferable that the fixed blade is a logarithmic number or a plurality of rotary blades.

[0007]

According to the coating material cutting waste removing apparatus of the present invention, when the cutting blade is pierced into the coating material of the workpiece, the coating material is moved in the longitudinal direction of the workpiece while rotating the rotary shaft. Is spirally cut and spiral cutting chips are generated. When this cutting waste is sucked from the suction nozzle and guided into the suction path, the cutting waste is cut into small pieces at the moment when the rotary blade and the fixed blade relatively contact with each other at the outlet of the suction path. The resulting fine cutting waste is sucked into the suction device through the suction port and collected.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a preferred embodiment of a coating material cutting waste removing device according to the present invention. FIG. 2 shows the same device by extracting a main part. In the reference numeral, 1 is a cutting edge, 2 is cutting waste, 2'is fine cutting waste, 3
Is an object to be cut; power cable, 4 is a fixed blade, 5 is a rotary blade,
6 is a bearing, 7 is a suction nozzle, 8 is a suction path, 9 is a rotating shaft,
10 is a support, 11 is a suction port, 12 is a suction device, 1
3 is a transmission mechanism such as a gear, 14 is a drive motor, 15 is a connecting hose, and 16 is a cavity.

The main skeleton of the device of this embodiment comprises an annular support 10 and an annular rotating shaft 9. Ring-shaped rotating shaft 9
Is inserted into the annular support 10 with a small relative diameter, and is rotatably supported by annular bearings 6 and 6.
It is linked to a drive motor 14 via a transmission mechanism 13 such as a gear. A closed cavity 16 is formed surrounded by the annular bearing 9, the annular support 10 and the bearings 6 and 6 on both sides.

The rotary shaft 9 has a flange on one end side in the axial direction (left side in the drawing), and the cutting blade 1 is supported and fixed to this flange. Further, the rotary shaft itself has a suction passage 8 extending in the axial direction, one of which opens to one end side (left side) in the axial direction, and the suction nozzle 7 is attached there. The suction nozzle 7 is brought close to the cutting edge of the cutting blade 1 so as to easily suck the cutting waste 2.

The other end of the suction passage 8 is opened to the outer side of the rotary shaft 9 to form an outlet so as to communicate with the cavity 16. The rotary blade 5 is fixed to the outlet of the suction passage 8 so that the rotary blade 5 and the rotary shaft 9 are rotated together. As shown in FIG. 2, the rotary blade 5 has a mortar-shaped hole having a gradually decreasing diameter from the inside to the outside, and the outer portion having the minimum diameter is smoothed to enable relative contact with a fixed blade described later. ing.

A bite-shaped fixed blade 4 is supported and fixed to the support body 10. The L-shaped cutting edge of the fixed blade 4 has a cavity portion 16.
Positioned so as to contact the circular orbit of the rotary blade 5 inside,
Therefore, the blade edge of the fixed blade 4 comes into relative contact with the rotary blade 5 only once every one revolution of the rotary blade 5. When the rotary blade 5 tries to pass through the inside of the fixed blade 4, the blade edge of the fixed blade 5 makes relative contact with the outer smooth surface of the rotary blade 5 and closes the hole, thereby cutting as will be described later. It is designed to be able to cut waste with shearing force.

The support 10 has a suction port 11 on the body side.
Is provided so that the shredded cutting waste 2'can be discharged to the outside. In order to facilitate the discharge of the fine cutting waste 2 ′, one end of the hose 15 is connected to the suction port 11 and the other end of the hose 15 is connected to the suction device 12. The suction device 12 may be of a vacuum suction type.

Now, the operation of the coating material cutting waste removing device having the above-described structure will be described. First, the support body 10 is supported by a shaft moving mechanism (not shown), and the power cable 3 is moved inside the rotary shaft 3. Pass through. Then, with the cutting edge of the cutting blade 1 piercing the covering material of the power cable 3 at a right angle, the rotary shaft 9 is axially moved in the B direction while being rotated in the A direction by the driving force of the drive motor 14, so that the cutting blade is cut. 1 relatively moves relative to the electric power cable 3 in a spiral shape, and as a result, spiral string-shaped cutting waste 2 is generated. The cutting chips 2 are continuously formed without breaks as the axial movement of the device progresses.

Thus, the cutting waste 2 has its tip introduced into the suction nozzle 7 and the suction force of the suction device 12 causes the suction passage 8 to pass.
Is sucked into. Therefore, there is no problem that spiral cutting waste is entangled with the processed surface of the power cable 3.

The cutting chips 2 sucked into the suction passage 8 are
From the outlet side of the suction passage 8 is sucked into the cavity 16 through the mortar-shaped hole of the rotary blade 5, and the moment the rotary blade 5 rotating with the rotary shaft 9 passes inside the fixed blade 4, the figure 2, the blade edge of the fixed blade 4 contacts the smooth surface of the rotary blade 5 to close the hole of the rotary blade 5, and the cutting waste 2 is cut by the shearing action at this time. This cutting is repeated every time the rotary blade 5 makes one revolution, thereby forming fine cutting chips 2 '.

The fine cutting waste 2'falls in the cavity 16 by its own weight and is sucked downward by the suction force of the suction device 12, and is sucked and collected from the suction port 11 to the suction device 12 through the hose 15. It will be.

It should be noted that the above embodiment is merely a preferred embodiment even if it gets tired, and various modifications can be made within the scope of the claims and claims of the present invention. For example, although there is only one fixed blade 4 according to the above-described embodiment, a plurality of fixed blades 4 are provided and are arranged at equal intervals in the circumferential direction of the support 10, so that a plurality of rotary blades 5 are provided. Since the fixed blades successively come into contact with each other and pass therethrough, the finely cut cutting chips 2'are further subdivided, and the suction process becomes easy. Further, in the above embodiments, the present invention is applied to the case of cutting the covering material of the power cable 3, for example, the polymer material, but it can also be applied to the covering material of other soft materials and the covering material of electric cables.
Depending on the case, it can be applied to a linear body with a soft coating other than the cable.

[0019]

According to the coating material cutting waste removing apparatus of the present invention as described above, the object to be cut is fixed and the cutting blade is rotated;
As a device for axial movement, it is possible to easily suck spiral string-shaped cutting chips without entanglement with the machined surface of the work piece and collect them as fine cutting chips, which can be mechanically continuously worked. It is possible and excellent in safety.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a coating material cutting waste removal device according to an embodiment of the present invention.

FIG. 2 is a perspective explanatory view showing a relationship between a fixed blade and a rotary blade in the coating material cutting waste removing device according to the embodiment of the present invention.

FIG. 3 is a perspective explanatory view showing a problem when cutting a covering material as a conventional example.

[Explanation of symbols]

 1 Cutting Blade 2 Cutting Debris 2 ′ Cutting Debris 3 Workpiece; Power Cable 4 Fixed Blade 5 Rotating Blade 6 Bearing 7 Suction Nozzle 8 Suction Path 9 Rotating Shaft 10 Support 11 Suction Port 12 Suction Device 13 Transmission Mechanism 14 Drive Motor 15 Hose 16 cavity

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 9, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002]

2. Description of the Related Art FIG. 3 shows a cutting procedure of a covering material (for example, an outer semiconductive layer) of a cable 3 which is a work to be cut.
By rotating the cutting blade 1 in the circumferential direction A of the cable 3 and moving it in the longitudinal direction B, the covering material is cut into a spiral cord shape. Reference numeral 2 is finely cut cutting dust that is finely cut by cutting.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004] It is an object of the present invention, it is possible <br/> be removed out of the continuous and automatic cutting machine the helical string-like chip, to provide a coating material cutting chip removing device is there.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

A bite-shaped fixed blade 4 is supported and fixed to the support body 10. The L-shaped cutting edge of the fixed blade 4 has a cavity portion 16.
Positioned so as to contact the circular orbit of the rotary blade 5 inside,
Therefore, the blade edge of the fixed blade 4 comes into relative contact with the rotary blade 5 only once every one revolution of the rotary blade 5. When the rotary blade 5 tries to pass through the inside of the fixed blade 4 , the blade tip of the fixed blade 4 relatively contacts the outer smooth surface of the rotary blade 5 and closes the hole, so that the cutting is performed as described later. It is designed to be able to cut waste with shearing force.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

Now, the operation of the coating material cutting waste removing device having the above-described structure will be described. First, the support 10 is supported by the shaft moving mechanism (not shown), and the power cable 3 is moved inside the rotary shaft 9 . Pass through. Then, with the cutting edge of the cutting blade 1 piercing the covering material of the power cable 3 at a right angle, the rotary shaft 9 is axially moved in the B direction while being rotated in the A direction by the driving force of the drive motor 14, so that the cutting blade is cut. 1 relatively moves relative to the electric power cable 3 in a spiral shape, and as a result, spiral string-shaped cutting waste 2 is generated. The cutting chips 2 are continuously formed without breaks as the axial movement of the device progresses.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsukasa Kasahara 5-1-1 Hidaka-cho, Hitachi-shi, Ibaraki Hitachi Cable Co., Ltd. Hidaka factory (72) Inventor Yoichi Watanabe 5 Hidaka-cho, Hitachi-shi, Ibaraki 1-1-1 Hitachi Cable Co., Ltd. Hidaka Factory

Claims (3)

[Claims] 1. A coating material cutting mechanism for cutting a coating material into a spiral cord by moving a cutting blade for the coating material of an object to be cut in a longitudinal direction of the coating material while rotating in a circumferential direction of the coating material, A suction nozzle and a suction path connected to this suction nozzle are provided on a cylindrical rotary shaft that supports the cutting blade, and a rotary blade that rotates with the rotary shaft is attached to the outlet side of this suction path to rotatably support the rotary shaft. A coating material cutting waste removing device, in which a fixed blade is arranged on a support, and the fixed blade and the rotary blade can relatively contact each other to cut the cutting waste of the coating material into small pieces. 2. A support body is arranged in a cylindrical shape so as to have a cavity on a rotating shaft and is provided with a suction port, and a suction device is connected to this suction port to remove cutting waste of coating material. apparatus. 3. The coating material cutting waste removing device according to claim 1, wherein the fixed blade is a logarithm of a single rotary blade or a plurality of fixed blades.