JPS6020898A - Blade cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting device for a plastic or elastic cylindrical body, particularly a cylindrical blade (knitted fabric).

[Prior art]

Conventionally, when cutting a cylindrical blade made of braided copper wire to a specified length, there are press cutting methods and cutting cutting methods in which the blade is cut using a thin rotating grindstone. The cut end surface is deformed and becomes irregular. ) Conventionally, to position the blade, the end face is pressed against the reference surface, but since the blade itself is an elastic product, it contracts in the length direction when pressed.
There is a problem that the cut dimensions become irregular.

Figure 1 (A) shows the state in which the end face hangs down when the cylindrical blade 1 is cut 1- by the conventional press cutting method, and Figure 1 (B) shows the end face seen from the axial direction of the blade 1. is shown with a broken line. Note that 2 represents the upper blade, and 3 represents the lower blade. [Object of the Invention] The present invention solves the above problems by using a cylindrical blade (
The purpose of this invention is to provide a cutting surface capable of cutting a blade (hereinafter abbreviated as a blade) into a constant length at a high speed.

[Structure of the invention]

The present inventor took advantage of the property that when a blade is compressed, its outer diameter expands, and when it is pulled, it conversely shrinks. After adhering it to the gold, a rotary cutter that rotates around the outer circumference of the blade was used to successfully cut the blade into a product with a clean cut surface of a certain length.

That is, the blade cutting equipment of the present invention includes a core metal having a cylindrical blade with a larger inner diameter and a larger outer diameter, and a receiving blade at the tip, a proximity switch that detects the position of the blade,
It is characterized by being provided with a clamp that fixes the blade in a predetermined position and a cutter that rotates and cuts the outer periphery of the blade.

[For production]

Proximity switches can be used to position the blade. That is, the tip of the blade being pushed into the core metal is detected by a proximity switch, and in response to a signal from the proximity switch, the advance is stopped by the first clamp, and then the feeder is reversed and the blade is fully pulled. When the core metal is completely adjusted, fix the 1JJIfr part with an M2 clamp and then cut it to a certain length.

Incidentally, the cutting and mounting of the present invention can also be applied to the above-mentioned blade lX or elastic r+J jl material such as rubber hose.

An embodiment of the present invention will be described below with reference to the drawings.

〔Example〕

FIG. 2 shows a front view of the blade cutting device.

The entire apparatus consists of a supply section A, a cutting section B, and a positioning section C. The feature of the apparatus of the present invention lies in the configuration of the cutting section B and the positioning group C, and FIG. 3 shows an embodiment of the 414 configuration of each of these sections in a sectional view.

That is, the positioning 66C is made up of the core bar 4, the guide 5, and the positioning block 6, and the core bar 4 can move forward and backward by the cylinder of the ninth block 6.The core bar 4 has an outer diameter of 62 mm and its tip. At the same time, a mushroom-shaped guide 5 is attached to the end surface of the core metal 4 via a ring 8 and a mushroom-shaped guide 5 is attached to the end surface of the core metal 4 via a ring 8. In addition, a donut-shaped urethane rubber 10 baked on the ring 8 is laid on the edge around the ring 8, so that the blade 1 can receive the deflection of the blade 1 during cutting. It is a straw-like material with an outer diameter of 55 mm made of 4-tone steel wire. The tip of the feeder blade 1 is placed over the head of the guide 5 by the feeder 11, which is advanced by the cylinder of the supply section C, and when the pressure is applied to °C, the diameter of the rear part of the blade 1 expands, making it easier to enter the core metal 4. Become. When the tip of the blade 1 approaches the positioning block 6 and pushes the blade detection lever 12 so that the V-bar 12 becomes vertical, the lJx clamp 14 grasps the grade 1 so that it is in close contact with the core metal 4 in response to a signal from the proximity switch 13. , and simultaneously stop the feeder 11. Next, when the feeder 11 is moved back by a predetermined distance and the blade 1 is pulled in the direction of pulling it out from the core metal 4, the diameter of the blade 1 is reduced and the blade 1 is brought into closer contact with the core metal 4. and the second
(7) The blade 1 is held in front of the cutting point by the clamp 15. The blade 1 is fixed between the cutting points of the positioning block 6 with the end face waviness of about 270 mm.

Near the cutting location of the blade 1, there is a cutter holder 1 driven by a cutter drive motor 1G as shown in FIG.
7 is self-installed and is free. The cutter holder 17 is equipped with a bearing 18, a mounting pin 19 and a nut 2.
The cutter 21 is rotatably attached via the cutter 21.

When cutting the blade 1, the cutter holder 17, which is rotating at high speed, is movably moved by the cutting cylinder 22 toward the center of rotation, and when the cutter 21 comes into contact with the blade 1, the cutter 21 begins to rotate. Cut into the blade 1 and cut. Next, the first clamp 14, the second clamp 1
Remove 5 from the ground and move 6 general 4 so that guide 5 is at position 5a.
When the blade 1 is moved backward, the cut blade 1 is placed in front of the device tj.
01 and take it out.

Fig. 4 shows the cut 1tli' point υ ~ 1 bend i, and the blade 1 is sheared by the edge 9a of the lower blade 9 and the edge 21a of the cutter 21. To prevent this, the distance from the VC end face = 1.
The shear angle θ□=1° of OWnn is set, and the cutter 21 that cuts from the top of the hole is L at 4 degrees! J] Since the blade L is turned, it must be avoided so that only the edge 21a hits so as not to touch the blade l. [Effects of the Invention] How does the device of the present invention prevent fraying? Then, the pre-L/-C place I
Z determination can be carried out automatically and in a short time; h, - Cutting F points can be made continuously with the nicle of the - leg, so the raw rrI property is significantly improved.

Since both sides of the cut point are supported by guides and core metal, and the blade is in tension, it is possible to obtain a product without deformation or fraying of the cut end surface.

[Brief explanation of drawings]

Figure 1 shows an explanation of the press cutting method, and Figure 2 shows a front view of the machine. FIG. 3 shows a prayer drawing according to an embodiment of the present invention. Figure 4 shows a plan view of the front part of the girder. In the figure. 1...Blade 2...Upper blade 3...-Lower blade 4...r+)s meeting 5...Guide 6-...Positioning 7 Lock 7.1. Bolt 8...
・Ring 9...Lower blade 10...Urethane rubber 11...Feeder 12...Blade detection lenoku 13...Proximity switch 14...lA1A1 Franz 5...Second clamp 16...Cutter Traveling motor 17... Cutter holder 18... Bearing 19... Mounting pin 20... Nut 21... Cutter 22... Cutting angle 1 non-ter Patent applicant Toyota Auto Body Niansha (/9) or 1 person) 21 ■ (A) (B) Momme 2 Figure 4th μm 1

Claims (1)

[Claims] A core metal with a cylindrical blade that has a larger inner diameter and a larger outer diameter and a receiving blade at the tip, a proximity switch that detects the position of the blade, and a clamp that fixes the blade in a predetermined position. A blade cutting device characterized by being provided with a cutter that cuts the outer circumference of the blade while rotating.