JPH09225727A - Cutting machine for continuous casting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the cutting capacity, to increase the stability, and to facilitate the structure without increasing the size of a machine body in a cutting machine to cut a long casting to be continuously fed from a casting furnace into billets. SOLUTION: An upper end of a lever 1 is pivotably supported by a king pin 4 provided on an upper part of a machine body 3, a rotary shaft 6 to be driven by a drive shaft 8 provided with a flywheel 7 through a rotation transmitting mechanism 12 is provided on a lower part of the machine body, and a slider 14 is fitted to a crank pin 13 provided on a large gear 11 which is integratedly rotated with the rotary shaft. The slider 14 is fitted to a guide groove 5 at a lower end of the lever 1, and the lever 1 is diagonally oscillated, a movable square blade 16 is fitted to a tip of an arm 15 whose base end is fitted in the middle of the lever 1 and which is slidably reciprocated diagonally at 45 deg., and a casting 18 of square section is cut between the movable square blade and a fixed square blade 17 fitted to a machine body side opposite to the movable square blade.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cutting for continuous casting, which is used for cutting a rolled billet of a desired length from a long cast product having a square cross section in a continuous casting process. The feature of the machine is that the reciprocating drive mechanism part of the movable rectangular blade whose cutting direction is set at 45 ° is improved to reduce the weight of the machine.

[0002]

Crank presses or hydraulic presses are commonly used in conventional cutting machines of this type.

[0003]

The crank press has the following problems.
There is a disadvantage that the entire apparatus becomes large. Further, the hydraulic press has a drawback that the cutting speed is slow and energy cannot be accumulated.

Therefore, it has been desired to develop a cutting machine which can obtain a large cutting force, can be downsized, have a high cutting speed, and can store energy.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a lever swingably suspended with a kingpin, which is biased to one side of the upper part of the machine body and laid horizontally, as a fulcrum.
A drive shaft equipped with a flywheel and a rotary shaft equipped with a large gear that is driven via an intermediate gear are installed on the other side of the lower part of the machine body in parallel with the kingpin. A slider is fitted on the crank pin provided on the side surface of the gear, and the slider is fitted in a guide groove provided at the lower end of the lever so that the lever is slanted with the rotation of the rotary shaft. An arm provided so as to reciprocally slide downward at an angle of about 45 ° as the lever swings is connected to the lever, and a movable square blade attached to this arm and a fixed square blade fixed to the machine body side. And a cutting machine for continuous casting adapted to cut a casting having a square cross section into rolled billets on a diagonal line.

The cutting machine of the present invention is a reciprocating driving body for a movable rectangular blade and has a kingpin on the upper part of the machine body and hangs down into the machine body. Since the lever swung through the groove is used, the total height of the device is lower than that of the conventional crank press and hydraulic press, and a sufficiently strong cutting force can be provided.

In the cutting machine of the present invention, the rotary shaft is driven to rotate by a drive shaft having a flywheel, and the rotational energy accumulated in the flywheel is used for swinging a lever having a movable square blade attached thereto. As a result, energy can be stored and power efficiency is higher than in conventional devices.
The present invention has solved the aforementioned problems as described above.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The cutting machine A illustrated as an example of the most preferred embodiment of the present invention is provided with a shaft hole 2 at the upper end of a heavy lever 1 having a sufficient thickness, length and width in the upper part of the machine body 3, and is shown in the left hand of the drawing. The king pin 4 is eccentrically biased to and supported by the king pin 4, and a bifurcated guide groove 5 is provided on the lower end which is slanted downward,

In parallel with the kingpin 4, a rotary shaft 6 is laterally laid across the lower part of the machine body 3 toward the right hand in the figure.
A rotary transmission mechanism 12 including a driving gear 9, an intermediate gear 10 and a large gear 11 is provided between the drive shaft 8 having a flywheel 7 and a side surface of the large gear 11 fixed to the rotating shaft 6. The crank pin 13 is provided, and the crank pin 13
By fitting the slider 14 fitted in the guide groove 5 at the lower end of the lever 1, the rotation of the rotary shaft 6 urged by the flywheel 7 is converted into the swing of the lever 1, and the lever 1 is slanted. Prepare to rock 1

The arm 1 is reciprocally slid downward on the lever 1 at a tilt of about 45 ° as the lever 1 swings.
5 is connected, and between the movable rectangular blade 16 attached to this arm 15 and the fixed rectangular blade 17 fixed to the machine body 3 side, a casting 18 having a square cross section is diagonally cut into rolling billets. I chose

[0011]

EXAMPLE As shown in FIG. 1, a fuselage 3 has a motor 19 installed at an upper portion thereof, and a lower right quadrant is partitioned by a partition wall 20,
The rotary shaft 6 is inserted into the partition wall. The rotating shaft 6 rotates one way via a large gear 11 fixed coaxially, a pair of front and rear intermediate gears 10 meshing with the large gear 11 and arranged in the rotation direction, and a driving gear 9 fixed to the drive shaft 8. . The drive shaft 8 is
As shown in FIG. 3, the flywheel 7, which also serves as a pulley, is fixed to the shaft end protruding to the outside of the machine body 3, and is belt-driven by a motor 19.

As described above, the lever 1 which tilts the king pin 4 and the rotary shaft 6 in the left and right directions above and below the machine body 3 and tilts diagonally is a side facing downward, as shown in FIGS. The arm 15 is provided with an inclination of about 45 ° from the edge.
Is projected. The arm 15 is swingably and integrally attached to the lever 1 by pivotally attaching a support shaft 21 at a base end at a position appropriately lowered from the kingpin 4, and a tip end thereof is supported by a fulcrum shaft 22 at a bottom portion of the machine body 3. By connecting to the tip of the attached swing link 23 with a link pin 23 ', the lever 1 swings and reciprocates while maintaining an inclination of about 45 ° toward the left corner of the machine body 3 in the figure.

Attached to the tip of the arm 15,
The movable rectangular blade 16 having an opening angle of 90 ° toward the upper right side is a mounting portion 24 extending from the left side of the machine body 3.
In addition, a casting 18 having a square cross section which is going to pass as shown in FIG. 1 between the movable rectangular knife 16 and the fixed rectangular knife 17 having an opening angle of 90 ° toward the inside in the lower left direction. Is cut diagonally (see FIG. 2).

In the cutting machine A constructed as described above, the reciprocating speed of the lever 1 is controlled by the supply speed of the casting 18 continuously supplied from the casting furnace, similarly to the conventional cutting machine.
It goes without saying that the billet is cut into a predetermined length.

Incidentally, in carrying out the present invention, the rotary transmission mechanism 12 provided between the drive shaft 8 and the rotary shaft 6 is not limited to the gear train as in the illustrated embodiment, but conforms to the cutting cycle of the present cutting machine. A known belt transmission mechanism or chain transmission mechanism having a speed ratio may be used. Further, the drive shaft may be directly connected to the rotary shaft.

[0016]

As described above, according to the cutting machine of the present invention having the lever which is supported by the king pin on the upper part and which is slanted downward and swings, the conventional crank press type and hydraulic press type cutting machine is provided. In comparison, without increasing the size of the aircraft,
A sufficient cutting ability can be provided. In addition, since the lever is oscillated by the rotary shaft that is installed in the lower part of the machine and is driven by the drive shaft equipped with the flywheel, the center of gravity of the device is lowered, and the stability and rich flywheel rotation are achieved. It is possible to obtain a cutting machine with high power efficiency that utilizes the stored energy.

Further, the cutting machine of the present invention is provided with a lever which swings obliquely as a reciprocating driving body of the movable rectangular blade, and which is slid back and forth at an inclination of about 45 ° as the lever swings. Since the arm is connected and the movable square tool is attached to this arm, the structure is simpler and easier to manufacture compared with the conventional device in which only the mounting position of the movable square tool is tilted at 45 ° together with the fixed square tool. And the noise generation is low. The present invention has excellent effects as described above.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a state at the time of completion of cutting of a cast potato.

FIG. 3 is a partially cutaway left side view.

[Explanation of symbols]

 A Cutting machine 1 Lever 2 Shaft hole 3 Machine body 4 King pin 5 Guide groove 6 Rotating shaft 7 Flywheel 8 Drive shaft 9 Driving gear 10 Intermediate gear 11 Large gear 12 Rotational transmission mechanism 13 Crankpin 14 Slider 15 Arm 16 Movable angular blade 17 Fixed Square blade 18 Casting 19 Motor 20 Bulkhead 21 Support shaft 22 Support shaft 23 Swing link 23 'Link pin 24 Mounting part

Claims (1)

[Claims] Claims: 1. A lever oscillatingly hung with a kingpin eccentrically placed on one side of an upper part of the machine body as a fulcrum, and a lever horizontally laid on the other side of the lower part of the machine body in parallel with the kingpin to fly. A drive shaft equipped with a wheel is equipped with a driving gear and a rotary shaft equipped with a large gear that is driven via an intermediate gear, and a slider is fitted on a crank pin provided on the side surface of the large gear, and this slider is used as a lever. It is equipped with a guide groove provided at the lower end of the lever so as to swing the lever obliquely with the rotation of the rotary shaft, and the lever reciprocates downward at an inclination of about 45 ° as the lever swings. An arm provided so as to slide is connected, and a casting having a square cross section is cut diagonally into a rolling billet between the movable square blade attached to this arm and the fixed square blade fixed to the machine side. Ream Casting for the cutting machine.