JPS6096352A - Stroke changer in mold oscillator for continuous casting machine - Google Patents

Abstract

PURPOSE:To improve the efficiency of operation by setting preliminarily a set stroke value into a storage circuit and enabling automatic change of the stroke from a remote place in the stage of rotating a revolving shaft and changing the stroke. CONSTITUTION:A titled device is provided with a pulse counter 39 which counts the rotating angle of an eccentric shaft 2 integral with a revolving shaft 1 cooperatively with the shaft 2, a storage circuit and an arithmetic circuit which calculates the set value set preliminarily in said circuit and the output signal from the counter 39 and consists of a combination of the shaft 2 and the eccentric body 4 to be fitted onto said shaft. The above-described storage circuit substitutes the stroke value with the previous set stroke value at the point of the time when the change of the stroke is completed and stores and holds said value until the next stroke change. A boss 5 for fixing the rate of eccentricity engaging with said body 4 via crest shape teeth 9, 10 is fitted freely slidably onto the outside circumference of the top end of the body 4. Hydraulic chambers 12, 13 are formed and fixtures 19 provided with tooth profiles 18b meshed with saw tooth profiles 18a formed on the outside of the body 4 are vertically moved by a cylinder 25.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stroke changing device in a mold vibration device for a continuous casting machine.

At the same time as the present invention, the present applicant invented a "mold vibrating device for a continuous casting machine" and filed a separate application at the same time as this invention.

As shown in FIG. 1, this is an eccentric device consisting of a combination of an eccentric shaft 2 integral with a rotating shaft l, and an eccentric body 4 fitted around the outer periphery of the eccentric shaft 2. An eccentricity fixing post 5 is slidably fitted on the outer periphery of the tip of the body 4, and a piston opening that slides on the inner peripheral surface of the body 4 is fixed to the eccentric body 4. A member F provided with chevron-shaped teeth 10 that mesh with chevron-shaped teeth 9 formed on the outer surface of the flange of the body 4.
+a and a member 5b joined to the member fia via a port 14, and the member 5b is slidably engaged with the sliding key 3f attached to the eccentric shaft 21 at its inner end. There is.

Then, hydraulic chambers 12 and 13 are formed on both sides of the piston 11 on the inner circumference of the member 5b, and a pipe line 15,
The eccentric body 4.12 is connected to a hydraulic power source (not shown) via the rotary joint (12. The engaging portion of the eccentricity fixing post b is engaged and disengaged. Reference numeral 7 denotes a vibration transmission rod to the mold (not shown), which is connected to the eccentric body via a bearing 8.

At both ends of the outer periphery of the eccentric body 4, there are saw-toothed teeth 1.
8a, and a fixing metal fitting 19 having a tooth profile 18b that engages with the tooth profile tea at the upper part of its outer circumference t, a semicircular arc-shaped (triangular shape is also acceptable) pin hole 20, and a pin hole 21 that engages with this. This support metal fitting 22 is supported by a compression spring 23 provided on the pedestal 24, and a hydraulic cylinder 26 is connected to the lower end. ) The downward movement causes the fixing fitting 19 and the eccentric body 4 to engage with each other, and when changing the stroke, the eccentric body due to the rotation of the eccentric shaft 2 This is to prevent the building from moving around.

The mold vibrating device A requires only one device to change the stroke of single oscillation, and in order to actually change the stroke of oscillation automatically and remotely using this device, it is necessary to change the stroke. Although the value must be specified, since the eccentricity fixing post b and the eccentric body 4 do not have constant stopping positions after oscillation, the stroke value cannot be detected appropriately.

In view of the above, the present invention has been filed concurrently with this application.
The present invention attempts to provide a device Fl- that can automatically set the oscillation stroke to a desired value from a remote location using the oscillation stroke. Embodiment E shown in the drawings will be explained below.

FIG. 4 shows a conceptual plan view of the present invention, in which a mold vibrating device A is attached to a rotary shaft 1, and an oscillation motor 27t is connected to an output shaft aol which is interlocked via a cup link 28 and a speed reducer 29. They are connected via a coupling 31. Also, the driven shaft 30' that rotates integrally with the rotating shaft l is equipped with a sprocket wheel /L/31! The sprocket wheel 32 is linked to the stroke changing motor 36 via a chain transmission mechanism 34.8fi combined with the sprocket wheel 32, and when the stroke is changed, an electromagnetic clutch installed coaxially with the motor 36 is connected to the sprocket wheel 32. Operation 1 of 37 is configured to rotate the eccentric shaft 2 integrated with the rotating shaft 1 through the chain transmission mechanism 3F+, 34. Detection is performed by a pulse counter 39 that is interlocked with the pulse counter 39, and all of these devices are electrically interlocked.

Next, the operation will be explained.

In order to automatically change the stroke from a remote location, it is necessary to detect the current stroke value as a preparatory work. Stroke amount is chevron tooth9. t.

Although it is determined by the engagement position, F is based on the relationship between the chevron teeth 9 and 10 at the engagement position with zero stroke, and then the rotation amount of the eccentric shaft 2 is determined by the pulse counter 391. Count it and set it in the memory circuit.

When a stroke change command is issued in this state, the hydraulic cylinder 25) is operated downwardly, and the support fitting 22 is operated downward, so that the tooth profile 18b of the fixing fitting I9 changes to the eccentric body 4.
The eccentric body 4 is secured by moving downward until it comes into contact with the tooth profile 18a of the eccentric body 4. When this operation is completed, pressure oil is applied to the hydraulic chamber 13 from the hydraulic source through the rotary joint 17 and the pipe line 16, and the angle-shaped teeth 9. The IO is disconnected.

After the chevron teeth 9 and 10 are completely disengaged, a rotation command is given to the stroke changing motor 36. This signal turns on the electromagnetic clutch 37 and controls the rotation of the motor 36 to the chain transmissions ga5, 34. Interlocked with the driven shaft 30' via a2,
The rotation angle of the eccentric 4ql12, which rotates integrally with the rotating shaft l, is detected by the pulse counter 3J.
The output signal from the pulse counter 39 is compared with the rotation angle up to the next stroke set value previously set in the storage circuit by the calculation circuit e, and when the output values become equal, the stroke changing motor 36 is stopped. Next is Yamagata i9. The engagement signal 1 is transmitted, and the signal 1 causes the pressure oil from the hydraulic source to switch over the hydraulic chamber 121 and engage the chevron teeth 9 and 10 with each other, completing the stroke change. Subsequently, the hydraulic cylinder 25 is moved upward to disengage the teeth 18a and 18b between the fixed metal fitting 19 and the eccentric body 4 via the supporting metal fitting 22.

After this, the stroke value D(S
n) before the change is replaced with the stroke value D(an-13e) and stored in the memory circuit. Therefore, the stroke value after the stroke change (current value) is changed to the stroke value before the change (D(Sn-1) Figure 2 is a block diagram showing the sequence of operations after the stroke change command is issued.

As described in detail above, according to the present invention, when changing the stroke by rotating the rotary shaft 1, the stroke is automatically and remotely changed based on the stroke setting value 1 set in advance in the memory circuit. Since the work is done from the ground, it is possible to have the work done efficiently, which is extremely effective in practice.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of the mold vibration device used in the present invention, Fig. 2 is a front sectional view taken along line 1-1 in Fig. 1, and Fig. 3 is a view taken in the direction of arrow I in Fig. 1. FIG. 4 shows a schematic plan view of the device of the present invention, and FIG. 5 is a block diagram of the operation sequence after a stroke command of the present invention is given. 1...Rotating shaft 2...Eccentric shaft 3...Sliding key
4... Eccentric body fi (F+a, 5b)... Eccentricity fixed boss -10- 7... Eccentric movement transmission fitting 9.10... Chevron tooth II
...Piston 12.13...Hydraulic chamber 11i,
Ifl...Hose 17...Rotary joint 18a...Tooth profile (eccentric body) 18b...Tooth profile (fixing metal fitting) 19...Fixing metal fitting 20...Pin hole 21.
... Bin 22 ... Supporting metal fittings 25 ... Hydraulic cylinder 27 ... Oscillation motor 28.31 ...
・Cusplink 29...Reducer ao, ao'...
・Shaft 32.34.3F+...Chain transmission mechanism 33.
38... Gear 36... Stroke change motor 37
...Electromagnetic clutch applicant Sumitomo Heavy Industries, Ltd. (and one other person) agent
Patent Attorney Isamu Ohashi-11-

Claims (1)

[Claims] An eccentric device consisting of a combination of an eccentric shaft integrated with a rotating shaft and an eccentric body fitted on the outside of the eccentric shaft, wherein the eccentric body and chevron-shaped teeth are attached to the outer periphery of the tip of the outside eccentric body. A matching eccentricity fixing boss is slidably fitted, and a piston sliding on the inner circumference of the fixing boss is fixed, and hydraulic chambers communicating with a hydraulic power source are formed on both sides of the piston, and the eccentricity on the outside is fixed. Above the outer periphery of the body, use a cylinder to operate a fixing metal fitting having a tooth profile that engages with the serrated tooth profile formed on the outer eccentric body.
In a mold vibration device supported by a vertically movable support metal fitting, a pulse counter is connected to the eccentric shaft to change the rotation angle of the eccentric shaft, and when a stroke change is completed, the stroke value is converted to the previous stroke setting value. A mold for a continuous casting machine, characterized in that it is provided with a memory circuit that replaces it with a memory circuit and retains the memory until the next stroke change, and an arithmetic circuit that computes an output signal of a pulse counter and a setting value set in advance in the memory circuit. Stroke change device in vibrator.