JP3293402B2 - Coating material chip removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing coating material shavings. The object to be coated with the coating material is a linear object, and an electrical cable is a typical example. In this case, the coating 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 external semiconductive layer) of a cable 3 to be cut.
By moving the cutting blade 1 in the longitudinal direction B while rotating in the circumferential direction A of the cable 3, the coating material is cut into a spiral string. Numeral 2 is finely cut chips that have been finely cut by cutting.

[0003]

According to the above-mentioned cutting technique, since the cutting chips 2 are formed in a spiral string, as the cutting operation progresses in the longitudinal direction of the workpiece 3, as shown in FIG. 2 is an exposed portion after cutting; there is a problem that it is entangled with the processed surface. Conventionally, in order to solve this problem, the operation of the apparatus is stopped after or during cutting, and the cutting is manually performed using a jig such as a knife. for that reason,
There is a possibility that the machined surface may be damaged or the operator may be injured. When the object to be cut is an electric cable, the processed surface is also an important portion in terms of electric characteristics, and thus, the above-mentioned damage is a serious problem.

[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.

[0005]

The gist of the present invention is as follows.
The cutting blade for the coating material of the workpiece to be cut,
Move the coating material in the longitudinal direction while rotating in the circumferential direction.
With this, the coating material can be cut as spiral string-shaped cuttings.
In the coating material cutting mechanism, a cylindrical member for supporting the cutting blade is provided.
Providing a suction nozzle on the rotating shaft to guide the spiral string-shaped cutting chips
And a suction path connected to the suction nozzle is provided.
Can rotate with the rotation axis on the exit side of
A rotary blade with a mortar-shaped hole
Attached to the support that rotatably supports the rotating shaft
A fixed blade is arranged, and the fixed blade and the rotary blade are relatively connected.
Through the mortar-shaped hole from the suction path
In order to be able to cut and cut the spiral spiral cutting chips
Coating material cutting debris removing device characterized by comprising:
It is in.

It is preferable that the support is formed in a cylindrical shape and arranged so as to have a cavity on a rotating shaft, and that a suction port is provided, and a suction device is connected to the suction port. It is preferable that the number of fixed blades is equal to or more than one for each rotary blade.

[0007]

According to the apparatus for removing cuttings of coating material according to the present invention, the cutting material is moved in the longitudinal direction of the workpiece while rotating the rotating shaft with the cutting blade piercing the coating material of the workpiece. Is spirally cut into spiral cutting chips. When the cutting chips are sucked from the suction nozzle and guided into the suction path, the cutting chips are finely cut at the moment when the rotary blade and the fixed blade relatively come into contact with each other at the outlet of the suction path. As a result, the chopped chips are sucked into the suction device from the suction port and collected.

[0008]

FIG. 1 shows a preferred embodiment of a coating material chip removing apparatus according to the present invention. FIG. 2 shows the same device with a main part extracted therefrom. In the reference numerals, 1 is a cutting blade, 2 is a cutting waste, 2 'is a shredded cutting waste, 3
Is a workpiece; 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 communication hose, and 16 is a cavity.

The main skeleton of the apparatus of this embodiment comprises an annular support 10 and an annular rotating shaft 9. Annular rotating shaft 9
Is inserted into the annular support 10 with a reduced relative diameter, and is rotatably supported by annular bearings 6, 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 an annular bearing 9 and an annular support 10 and bearings 6 and 6 on both sides.

The rotary shaft 9 has a flange at one axial end (left side in the drawing), and the cutting blade 1 is supported and fixed to the flange. The rotary shaft itself has a suction passage 8 extending in the axial direction, one of which is opened at one end side (left side) in the axial direction, and a suction nozzle 7 is attached there. The suction nozzle 7 is made to approach 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 opens to the outer side of the rotary shaft 9 to form an outlet, and communicates with the cavity 16. The outlet of such a suction passage 8 to secure the rotary blade 5, and the this rotary blade 5 and rotary shaft 9 so as to rotate together. As shown in FIG. 2, the rotary blade 5 pierces a mortar-shaped hole with a gradually decreasing diameter from the inside to the outside, and smoothes the outer portion having the minimum diameter to enable relative contact of a fixed blade described later. ing.

A fixed blade 4 in the form of a cutting tool is supported and fixed to the support 10. The L-shaped cutting edge of the fixed blade 4 has a cavity 16.
Is positioned so as to be in contact with the circumferential trajectory of the rotary blade 5 within
Therefore, the cutting edge of the fixed blade 4 comes into relative contact only once each time the rotary blade 5 makes one rotation. When the rotary blade 5 is going to pass through the inside of the fixed blade 4 , the cutting edge of the fixed blade 4 relatively contacts the outer smooth surface of the rotary blade 5 and closes the hole. Debris can be cut by shearing force.

The support 10 has a suction port 11 on the body side.
Is provided so that the cut chips 2 'can be discharged to the outside. One end of a hose 15 is connected to the suction port 11 and the other end of the hose 15 is connected to a suction device 12 in order to facilitate the discharge of the cut chips 2 ′. The suction device 12 may be of a vacuum suction type.

Now, the operation of the coating material chip removing apparatus having the above-described configuration will be described. First, the support 10 is supported by a shaft moving mechanism (not shown), and the power cable 3 is moved inside the rotating shaft 9 . Let it through. Then, with the cutting edge of the cutting blade 1 pierced at right angles to the covering material of the power cable 3, the rotating 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. 1 moves helically relative to the power cable 3, and spiral swarf 2 is generated. This cutting waste 2 is continuously formed without a break as the axial movement of the apparatus progresses.

Thus, the tip of the cutting waste 2 is introduced into the suction nozzle 7, and the suction path 8 is drawn by the suction force of the suction device 12.
It is sucked in. Therefore, the problem that the spiral string-shaped cutting chips 2 are entangled with the processing surface of the power cable 3 is eliminated.

The cutting chips 2 sucked into the suction path 8
At the moment when the rotary blade 5 that rotates with the rotary shaft 9 passes through the inside of the fixed blade 4, it is sucked from the outlet side of the suction passage 8 through the mortar-shaped hole of the rotary blade 5 and into the cavity 16. As in 2, the cutting edge of the fixed blade 4 comes into contact with the smooth surface of the rotary blade 5 to close the hole of the rotary blade, and the cutting chips 2 are cut by the shearing action at this time. This cutting is repeated every time the rotary blade 5 makes one rotation, thereby forming the chopped chips 2 ′.

The cut chips 2 ′ fall down by their own weight in the cavity 16, are also sucked downward by the suction force of the suction device 12, and are sucked and collected from the suction port 11 through the hose 15 into the suction device 12. Will be.

It should be noted that the above-described embodiment is merely an exemplification as a preferred embodiment, and various modifications may be made within the scope of the claims of the present invention; For example, according to the above-described embodiment, the number of the fixed blades 4 is one, but the number of the fixed blades 4 is plural, and the plurality of the rotary blades 5 Since it passes through the fixed blade one after another, the finely cut chips 2 ′ are further subdivided, and the suction processing is facilitated. In the above embodiment, the present invention is applied to the case of cutting the covering material of the power cable 3, for example, a polymer material. However, the present invention can be applied to the covering material of other soft materials and the covering material of the electric cable.
In some cases, the present invention can be applied to a linear body with a soft coating other than the cable.

[0019]

According to the apparatus for removing cuttings of the present invention as described above, the workpiece is fixed and the cutting blade is rotated;
It can be used as a device to move the shaft, and it can easily suction spiral string-shaped chips without getting entangled with the machined surface of the workpiece, and collect them as finely cut chips. It is possible and excellent in safety.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of an apparatus for removing coating material shavings 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 chip removing device according to the embodiment of the present invention.

FIG. 3 is a perspective explanatory view showing a problem when cutting a coating material in a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cutting blade 2 Cutting waste 2 ' fine cutting waste 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

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tsukasa Kasahara 5-1-1, Hidaka-cho, Hitachi City, Ibaraki Prefecture Inside the Hidaka Plant, Hitachi Cable Corporation (72) Inventor Yoichi Watanabe Hidaka-cho, Hitachi City, Ibaraki Prefecture 5-1-1, Hidaka Electric Works Co., Ltd. (56) References JP-A-6-170605 (JP, A) Jiko 49-8381 (JP, Y1) (58) Field surveyed (Int .Cl. ⁷ , DB name) B23B 5/12 B23B 25/00 B23Q 11/00 H02G 1/12 301

Claims (1)

(57) [Claims] The cutting edge for dressing according to claim 1] object to be cut, said of the <br/> Kutsugaezai circumferential while rotating in the direction of the coating material by moving in the longitudinal direction of said dressing helical string-like Cutting as cutting waste
In it dressing cutting mechanism, a suction nozzle leading to the helical string-like chip a cylindrical rotary shaft for supporting the cutting blade
A suction passage connected to the suction nozzle provided with a provided outside from the rotational axis and Kyokai Rideki and inner outlet side of the <br/> suction path
To toward annexed a rotating <br/> rolling cutter having a small the bowl-shaped hole progressively diameter, yet place the fixed blade to a support for supporting rotatably the rotary shaft, the rotary blade and the fixed blade And make the mortar-shaped hole from the suction path relatively accessible.
Can cut the helical string-shaped cuttings guided through
A coating material shavings removing device characterized by having such a configuration .