JPH05277706A - Instrument for measuring levelness of mold in anode casting process - Google Patents

Abstract

PURPOSE:To provide a measuring instrument for levelness of a mold, in which the shape error of an anode can be reduced and the adjusting time can be shortened. CONSTITUTION:In this measuring instrument, non-contact type distance sensors 12a, 12b for detecting the height of the upper surface of the mold 10, fitted so as to face to the upper surface of the conveyed mold 10 and an arithmetic means 13 for calculating the levelness of the mold based on the plural height data by the distance sensors 12a, 12b at plural positions on the way of conveying the mold 10 are provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a mold levelness in an anode casting process for measuring the levelness of a mold before casting in an anode casting process for casting an anode used for electrolytic smelting of metals such as copper and tin. The present invention relates to a measuring device (hereinafter, simply referred to as a mold horizontality measuring device).

[0002]

2. Description of the Related Art Conventionally, in an anode casting process, a mold having a recess formed on the upper surface thereof is conveyed and molten metal is poured into the recess to cast an anode. Here, since the levelness of the mold influences the shape of the anode to be cast, the levelness of the mold is usually determined by visual measurement or a bubble level before pouring, and a spacer is inserted at the bottom of the mold based on this result. Or, the jack provided below the mold is expanded or contracted to adjust the levelness of the mold.

[0003]

However, in the case where the levelness is visually adjusted, even if there is an error of several mm, it is often not noticed, and the deformation error of the shape during anode casting becomes large. There's a problem.

Further, the method using the level has a problem that it requires skill and time is required for adjustment work, and the casting line may have to be stopped.

The present invention has been made in view of the above circumstances, and a mold leveling apparatus capable of reducing a shape deformation error at the time of anode casting and shortening an adjustment time required for installing a mold. The purpose is to provide.

[0006]

The mold levelness measuring apparatus of the present invention is an anode casting process in which a mold having a concave portion formed on its upper surface is conveyed and molten metal is poured into the concave portion to cast an anode. A mold levelness measuring device in an anode casting process for measuring the levelness of the mold, wherein the non-contact distance sensor is mounted to face the upper surface of the conveyed mold and detects the height of the upper surface of the mold. And a calculation means for calculating the horizontality of the mold based on a plurality of height data obtained by the distance sensor at a plurality of positions during the mold conveyance process.

[0007]

In the mold leveling apparatus of the present invention, the height data of the upper surface of the mold is obtained by the distance sensor when the mold is conveyed. Then, this height data is measured at a plurality of points as the mold is continuously conveyed. The plurality of measured height data are calculated by the calculating means to obtain the horizontality of the mold.

[0008]

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

FIG. 1 shows the overall construction of an anode casting line provided with the mold leveling apparatus of this embodiment. This anode casting line comprises a disc-shaped turntable 1, a pouring device 2 for pouring the molten metal into a mold 10 along the circumferential direction of the turntable 1, and an anode poured into the mold 10. A shower device 3 for cooling the anode, a waste anode take-out device 4 for taking out a defective anode, and a releasing device 5 for pushing up an anode pushing rod provided in the mold 10.
A cooling and discharging device 6 for cooling and discharging the anode separated from the mold 10 by the mold releasing device 5, and a mold releasing agent applying device 8 for applying a mold releasing agent to the mold 10 supplied to the pouring device 2. And a mold leveling measuring device 9 provided on the upstream side of the release agent coating device 8 for measuring the levelness of the mold 10.

As shown in FIGS. 2 and 3, the mold 10
A recess 11 into which molten metal is poured is formed on the upper surface of the. The recess 11 has a substantially rectangular shape in plan view, and anode ears 15 for forming a suspended portion on the cast anode are formed at two corners of the mold 10 on the front end side in the transport direction. There is. The width dimension of the recess 11 of the mold 10 is about 9
It is 50 mm.

As shown in FIGS. 2 and 3, the mold leveling devices 9 are arranged in the direction orthogonal to the rotation direction of the turntable 1 at a distance of about 800 mm from each other.
In addition, non-contact type distance sensors (hereinafter referred to as distance sensors) 12a and 12b which are attached at a distance of about 50 mm from the upper surface of the mold 10, and these distance sensors 12a and 12a,
The output terminals of 12b are connected, and the distance sensors 12a and 12b are connected.
Calculation means 13 for calculating the horizontality of the mold 10 based on the height data of the mold 10, a proximity sensor 14 for detecting that the mold 10 has reached a predetermined position, and a display for displaying the result calculated by the calculation means 13. And means 16. From the relationship between the width of the recess 11 of the mold 10 and the distance between the two distance sensors 12a and 12b, the distance sensor 1
2a and 12b are arranged to face the inner bottom surface of the peripheral wall of the recess 11 of the mold 10 conveyed by the turntable 1 in the vicinity of the peripheral wall. Further, as the distance sensors 12a and 12b, those using laser light are used, but ultrasonic sensors may be used.

Using the mold leveling device 9, the mold 1
A procedure for measuring the levelness of 0 will be described. That is, when the mold 10 is conveyed by rotating the turntable 1 and the proximity sensor 14 detects that the mold 10 has reached a predetermined position, the distance sensors 12a, 12a, 12a, 12b, 12c
The output value of b is input to the calculating means 13. The height data detected at this time is a numerical value corresponding to the distance between the distance sensors 12a and 12b and the bottom surface of the recess 11 at points A and B in FIG. This numerical value is stored in a memory (not shown). The height data obtained by the distance sensors 12a and 12b may indicate the absolute distance from the bottom of the recess 11 or the deviation distance from the reference horizontal plane.

Further, when it is detected that the turntable 1 is rotationally driven and the mold 10 is conveyed to reach a predetermined position, the distance sensors 12a and 12b are similarly operated as described above.
The output value of is input to the calculating means 13. The height data detected at this time is a numerical value corresponding to the distance between the distance sensor 12a, 12b and the bottom surface of the recess 11 at points C and D in FIG. This numerical value is stored in a memory (not shown).

As a result, four height data corresponding to points A, B, C, and D in FIG. 2 are obtained, and by making a difference between these height data, the bottom surface of the concave portion 11 of the mold 10 with respect to the horizontal plane. The inclination, that is, the levelness is obtained. This level is displayed on the display means 16. Based on this display
For example, an operator inserts a spacer having an appropriate thickness on one side of the bottom of the mold 10 to adjust the inclination of the mold 10. It should be noted that the turntable 1 supporting the mold 10 is provided with an adjusting mechanism for adjusting the inclination of the mold 10 with respect to the horizontal plane, and the adjusting mechanism is driven based on the levelness obtained by the calculating means 13 to automatically move the mold 10. The inclination may be adjusted.

Further, in this embodiment, the distance sensor 12
Since a and 12b are provided so as to face the side edges of the concave portion 11 of the mold 10, height data can be obtained while avoiding the central portion of the concave portion 11 whose surface is roughened by pouring molten metal. It is possible to improve the measurement accuracy.

The turntable 1 is decelerated from a predetermined rotation speed during pouring, and is returned to the predetermined rotation speed after pouring.
The measurements a and 12b are preferably performed while the vehicle is being decelerated in order to maintain high measurement accuracy.

Based on the horizontality obtained by the computing means 13, the mold 10 is inclined at a predetermined angle so that the leading end side of the mold 10 in the carrying direction is lower than the trailing end side in the carrying direction. May be. In such cases,
It is possible to suppress the generation of a defective anode in which the molten metal easily flows into the anode ear portion 15 formed in the concave portion 11 of the mold 10 and the casting amount is reduced in that portion so that the suspended portion is not formed. Furthermore, the leading end side in the carrying direction of the anode is formed thicker than the trailing end side in the carrying direction, so that the suspended portion can have sufficient strength.

In the above embodiment, the proximity sensor 14 is provided to detect that the mold 10 has reached a predetermined position, and at that time, height data is obtained from the distance sensors 12a and 12b. , The proximity sensor 14 is not provided, and it is detected based on the outputs of the distance sensors 12a and 12b that the end portion of the mold 10 on the leading end side in the transport direction has come directly below the distance sensors 12a and 12b, and from this time, a predetermined time The outputs of the distance sensors 12a and 12b may be read when the time has elapsed, and a plurality of height data corresponding to a plurality of positions of the mold 10 may be obtained. In this case, the proximity sensor 14
Since it is not necessary to provide the above, it is possible to simplify the structure of the mold leveling device 9.

[0019]

As described above, according to the mold leveling apparatus of the present invention, a non-contact type distance sensor mounted facing the upper surface of a mold to be transferred and a plurality of molds in the process of transferring the mold. Since it has a calculating means for calculating the horizontality of the mold based on a plurality of height data obtained by the distance sensor at a location, it is possible to obtain the horizontality for each mold by subtracting the plurality of height data. , Even when detecting the level of molds with different thickness, that is, the distance between the distance sensor and the upper surface of the mold is different, the level can be calculated without any special adjustment work. If the inclination of the mold is adjusted according to the degree, it is possible to reduce the deformation error of the shape during casting of the anode, especially the local deviation and variation of the anode thickness, and it is possible to reduce the mold installation. It is possible to shorten the adjustment time.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an anode casting line provided with a mold leveling device of the present invention.

FIG. 2 is a plan view showing a mold levelness measuring device of the present invention.

FIG. 3 is a front view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turntable 2 Pouring device 9 Mold leveling measuring device 10 Mold 11 Recesses 12a, 12b Non-contact type distance sensor 13 Computing means 14 Proximity sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuhiro Kokuma 4049-1 Naoshima-cho, Kagawa-gun, Kagawa 1 Mitsubishi Materiality Co., Ltd. Naoshima Smelter

Claims (1)

[Claims] 1. A mold in an anode casting process in which the levelness of the mold is measured before pouring in an anode casting process in which a mold having a recess formed on the upper surface is conveyed and molten metal is poured into the recess to cast an anode. A levelness measuring device, a non-contact type distance sensor attached to the upper surface of a mold to be conveyed so as to detect the height of the upper surface of the mold, and the distance sensors at a plurality of points in the process of transferring the mold. And a calculation means for calculating the level of the mold based on a plurality of height data obtained by the method described above.