JPH0525299U - Melting furnace automatic multi-function device - Google Patents

Abstract

(57) [Summary] [Purpose] Forcing the input material into the molten metal,
It is an object of the present invention to automatically perform all the work of stirring the input material and the work of scraping the floating dross generated after melting, thereby improving work efficiency, productivity and labor saving. A second arm 15 is vertically rotatably connected to a tip of a first arm 9 which is vertically rotated by a hydraulic cylinder 10. Further, a hydraulic cylinder 17 for rotating the second arm 15 is attached to the first arm 9. The drive control unit 11 drives and controls the hydraulic cylinders 10 and 17 based on the operation process information stored in advance, so that the scraper 18 forcibly pushes the charged material into the molten metal 19, the operation of stirring the charged material, and The operation of scraping the floating dross generated after the melting is sequentially and automatically executed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a melting furnace automatic multi-function device.

[0002]

[Prior Art]

 In a melting furnace that melts empty aluminum or stainless steel cans and ingots collected for resource reuse (hereinafter collectively referred to as input materials), the input materials are stirred and immersed in the molten metal or melted. The slag on the surface is removed. Various types of slag removing devices have been conventionally proposed, and examples thereof include those disclosed in JP-A-63-43756, JP-A-62-237285, and the like. The former slag scraping device scrapes the slag by stirring the molten metal with a scraping plate provided on the suspension arm. On the other hand, the latter slag removing device sucks and removes slag with a suction head.

[0003]

[Problems to be solved by the device]

 However, all of the above-mentioned conventional devices have a main purpose of removing slag, and particularly in the latter slag removing device, the molten metal that is being melted is stirred to remove it on the surface of the molten metal for suction removal. There was a drawback that the input material floating in the water could not be immersed in the molten metal. In addition, these conventional devices have a problem in labor saving because the operator operates them while monitoring the melting state, and because they are forced to work for a long time in a high heat environment, There was also the problem of poor work efficiency.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to forcibly push the charged material into the molten metal, to stir the charged material, and To provide an automatic multi-function device for a melting furnace capable of automatically and continuously carrying out all the work of scraping floating dross generated after melting, improving work efficiency, productivity and labor saving. It is in.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a first arm having a base end rotatably supported in a vertical direction, a first drive device for rotating the first arm, and one end of which is a tip end of the first arm. A second arm which is rotatably supported in the up-down direction and has a scraper attached to the other end, a second drive device which is attached to the first arm and rotates the second arm, and a drive control unit. The drive control unit drives and controls the first and second drive devices based on pre-stored operation process information to force the scraper to push the charging material into the molten metal. It is characterized in that the operation of stirring the material and the operation of scraping the floating dross generated after melting are performed.

[0006]

[Action]

 In the present invention, the drive control unit drives and controls the first and second drive devices based on the previously stored information on the operation process. When the first and second arms are rotated by the first and second drive devices, they draw a locus of motion determined for each operation step, whereby the scraper causes the charged material to flow into the molten metal. It is squeezed and stirred, and after dissolution, it scoops up the floating dross that is generated with the dissolution.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a sectional view showing an embodiment of an automatic multi-functional melting furnace according to the present invention. In the figure, reference numeral 1 is a melting furnace, and a plurality of such melting furnaces 1 are arranged in parallel along a rail 3 on which an automatic multi-function device 2 is self-propelled. An opening / closing door 5 is provided along the front wall of the melting furnace 1 so as to be vertically movable.

The automatic multi-function device 2 is provided with a carriage 7 having wheels 6 on its lower surface and movable on the rails 3. The carriage 7 also includes a motor 8, a first arm 9, and a first arm 9. A hydraulic cylinder (first drive device) 10 and a drive control unit 11 for operating the are mounted. The rail 3 is laid on the front floor of the melting furnace 1 substantially parallel to the melting furnace 1. The trolley 7 is self-propelled on the rail 3 by transmitting the rotation of the motor 8 to the wheel shaft 12 via a gear. The first arm 9 has a base end 9A pivotally supported in a vertical direction by a horizontal shaft 14 provided on the carriage 7, and is pivoted downward by a forward movement of a piston rod 10A of the hydraulic cylinder 10. It is configured to be rotated upward by the backward movement. An intermediate portion near one end of the second arm 15 is rotatably connected to the tip 9B of the first arm 9 by a horizontal shaft 16 in the vertical direction, and the second arm 15 is rotated in the vertical direction. A hydraulic cylinder (second drive device) 17 is installed. The piston rod 17 A of the hydraulic cylinder 17 is connected to one end of the second arm 15 via a connecting pin. Therefore, the second arm 15 rotates downward when the piston rod 17A moves forward, and rotates upward when the piston rod 17A moves backward. A scraper 18 inserted into the melting furnace 1 from the charging port 4 is attached to the other end of the second arm 15.

The drive controller 11 drives and controls the motor 8. Further, the drive control unit 11 performs three operation steps by the scraper 18, that is, an operation step of forcibly pushing the input material floating on the surface of the molten metal 19 into the molten metal 19 (pushing operation step), the input material and the molten metal. 19 has a storage means for storing information on an operation step of stirring 19 (stirring operation step) and an operation step of scraping the floating dross generated after melting (scraping operation step). 2 The hydraulic cylinders 10 and 17 are drive-controlled. The information of such an operation process is obtained by considering the molten metal condition in the melting furnace 1, the amount of input material to be charged into the melting furnace 1, the performance of the melting furnace, etc. by the operating operator in advance. Is actually operated, the operator selects each key place and the order of movement (teaching point) and stores it as operation process information. Such teaching points can be detected, for example, by detecting the rotation angles of the first and second arms 9 and 15 by a rotary encoder (not shown) incorporated in the rotation fulcrums of these arms. Up to 25 points are stored for each operation process. Further, the maximum number of operation steps that can be stored is nine. It should be noted that the first and second arms 9 and 15 are provided with pivoting fulcrums.

FIG. 2 is a diagram showing teaching points in the operation process of pushing in the input material. In this operation process, the scraper 18 is moved up and down four times while moving from the back side to the front side of the melting furnace 1. The tip of the second arm 15 is at the teaching point T.₁-T₂-T₃-T_Four-T_Five-T₆-T₇-T₈-T₉-T_Ten-T_{1 1} -T₁₂-T₁₃Through T again₁Return to.

FIG. 3 is a diagram showing teaching points in the same pushing operation step. In this operation process, contrary to the above, the scraper 18 is moved up and down twice while moving from the front side to the back side of the melting furnace 1. The tip end of the second arm 15 is the teaching point. _{T 1 -T 2 -T 3 -T 4} -T 5 again through the -T ₆ -T ₇ returns to T _1.

FIG. 4 is a diagram showing teaching points in the step of stirring the input material. In this operation process, the scraper 18 is moved up and down five times while moving from the back side to the front side of the melting furnace 1, and the tip of the second arm 15 has a teaching point T ₁ -T. Back to T ₁ again through _{2 -T 1 -T 3 -T 4 -T} 3 -T 5 -T 6 -T 5 -T 7 -T 8 -T 7 -T 9 -T 10 -T 9 -T 11 ..

FIG. 5 is a diagram showing teaching points in the step of moving up the floating dross. In this operation step, the scraper 18 is immersed in the molten metal 19 so as to be moved from the back side to the front side of the melting furnace 1, and the tip of the second arm 15 has a teaching point T ₁ -T _2-. T ₃ Back to _{-T 4 -T 5 -T 6 -T 7} -T 8 T 1 again through.

FIG. 6 is a diagram showing a flowchart of such a basic teaching operation cycle. First, in step S1, the select switch is operated to select teaching, and then, in step S2, the above three operation steps are programmed in order to start the select confirmation push button operation. In step S3, the first and second arms 9 and 15 are moved to the desired teaching point, the teaching push button operation is performed in step S4, and the arm position is written in the data in step S5. Then, each teaching point is written in the data, and this is stored in the storage means of the drive control unit 11 as operation process information. After one operation process information is stored in this way, the teaching point of the next operation process is written as data and stored in the storage means. Then, the teaching operation is completed by storing all the operation steps.

FIG. 7 is a diagram showing a flowchart of a basic automatic operation cycle of the melting furnace automatic multifunctional device having the above-mentioned configuration. First, when the automatic operation is selected in step 50, and then the start push button is turned on in step 51, the pushing operation process information stored in the storage means is read out, and the hydraulic cylinder 10 is driven according to this information. , The first arm 9 is moved toward the predetermined position (step 52). At this time, the second arm 15 also starts to move by similarly driving the hydraulic cylinder 17. In step 53, it is judged whether or not the first arm 9 has arrived at the target point, and if it has arrived, in step 54, the current value is compared with the target value previously stored in the storage means, and the magnitude is compared. The determination is made in step 55. If the current value is smaller than the target value, the first arm 9 is moved forward in step 56, and if it is larger than the target value, it is moved backward in step 57 to set it at a predetermined position. In step 53, if the target point is not reached, the first arm 9 is operated again to move to the target point. By performing such steps for each of the stored target values, the tip of the second arm 15 draws a predetermined movement locus, and the pushing operation step by the scraper 18 is executed. When the pushing operation process is completed, the stirring operation process information is read out and the stirring operation by the scraper 18 is executed by taking the same steps as above. Then, when the stirring operation process ends, the scraping operation process information is finally read out, and the scraping operation of the floating dross by the scraper is performed. Such a series of operations are all performed automatically and continuously, and when the operation is completed, the first arm 9 is rotated rearward as shown by the chain double-dashed line in FIG. Draw from.

Thus, in the melting furnace automatic multifunctional device having such a configuration, the driving control unit 11 is made to store the teaching point in advance so that the first and second arms 9 and 15 draw a predetermined movement locus. In addition, since the scraper 18 automatically and sequentially performs the pushing operation of the input material, the stirring operation of the input material, and the scraping operation of the floating dross according to the program, no worker is required, and the productivity and the apparatus are improved. The operating rate of can be greatly improved. In addition, depending on the worker, the quality was not constant due to the difference in dipping-specific technology, and the yield rate was poor, but in the present invention, it is possible to melt under the same conditions because it is all automatic, and it is possible to stabilize the quality. The yield rate can be improved.

Although the above embodiment has described the case where the hydraulic cylinder is used as the drive device for the first and second arms 9 and 15, the present invention is not limited to this, and other suitable drive devices are used. It goes without saying that a device such as an air cylinder may be used.

[0018]

[Effect of the device]

 As described above, according to the melting furnace automatic multi-function device of the present invention, the scraper forcibly pushes the input material in the melting furnace into the molten metal, the operation of stirring the input material, and the floating that occurs after melting. Since it is configured to automatically draw the dross in order, it is possible to save labor, improve the working environment, and improve productivity, and the device itself is relatively simple and inexpensive to manufacture and provide. be able to.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of an automatic melting furnace multi-function device according to the present invention.

FIG. 2 is a diagram showing teaching points in a step of pushing in a material to be charged.

FIG. 3 is a diagram showing teaching points in the same process of pushing in the input material.

FIG. 4 is a diagram showing teaching points in a stirring operation process of an input material.

FIG. 5 is a diagram showing teaching points in a step of scraping a floating dross.

FIG. 6 is a diagram showing a flowchart of a basic teaching operation cycle.

FIG. 7 is a diagram showing a flowchart of a basic automatic driving operation cycle.

[Explanation of symbols]

 1 Melting Furnace 2 Automatic Multifunctional Device 7 Cart 8 Motor 9 First Arm 10 Hydraulic Cylinder 11 Drive Controller 15 Second Arm 17 Hydraulic Cylinder 18 Scraper 19 Molten Metal

Claims (1)

[Scope of utility model registration request] 1. A first arm having a base end axially rotatably supported in a vertical direction, a first drive device for rotating the first arm, and one end vertically rotated to a tip of the first arm. A second arm that is movably supported and has a scraper attached to the other end, a second drive device that is attached to the first arm and rotates the second arm, and a drive controller are provided. The part controls the driving of the first and second drive devices based on the operation process information stored in advance, thereby forcibly pushing the input material in the melting furnace into the molten metal into the scraper, and stirring the input material. An automatic multi-function device for a melting furnace, which is configured to perform an operation and an operation of scraping a floating dross generated after melting.