JPH0635896U - Pre-furnace work device for open well furnace - Google Patents

Abstract

(57) [Summary] [Purpose] All the pre-furnace work such as dipping work of input material, stirring work, dross separating work, and slag removing work are performed automatically and continuously. [Structure] A support table 20 is slidably arranged on a carriage 9 traveling along a rail 3 in a direction orthogonal to a traveling direction of the carriage 9. A rotatable column 30 is erected on the support table 20, and a slider 36 is arranged on the column 30 so as to be vertically movable. The slider 36 includes an arm 50 extending in the horizontal direction, and scrapers 57 and 58 are arranged at the tip of the arm 50. Then, the drive control unit 80 causes the carriage 9 to travel, the support 20 to slide, the column 30 to rotate, the slider 36 to move up and down, the arm 50 to rotate, and the scraper 57,
By performing the switching control of 58, the dipping operation of the input material 55 in the open well furnace 1, the stirring operation, the dross slagging operation, and the like are sequentially and automatically performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pre-furnace work device for an open well furnace which is capable of automatically performing pre-furnace work.

[0002]

[Prior art]

 The melting work of aluminum and aluminum alloy (hereinafter referred to as "aluminum") scrap (hereinafter referred to as "input material") in an open-well furnace includes dipping of the input material, stirring, and separation (finely tapping the dross on the molten metal to remove the aluminum in the dross). Various complicated works such as dropping into the molten metal) and dross slagging work are required, and these works are collectively called pre-furnace work. While this pre-furnace work is conventionally performed manually by a worker, a technique of operating a work robot (eg, Japanese Patent Publication No. 3-54164) has also been disclosed.

[0003]

[Problems to be solved by the device]

 However, the manual work by the worker is hard work because it is performed while receiving the high heat of the molten aluminum, and it is difficult to work for a long time.In particular, the judgment work is a monotonous long time work that taps the aluminum ross finely with a dedicated judgment jig. As a result, there were cases where it was not carried out sufficiently. In addition, even when working with a work robot, there is a problem in that the operator must operate the robot to save labor, and the work environment and work are difficult because the work is required for a long time in a high heat environment. There was also the problem of inefficiency.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and the purpose thereof is to immerse the input material, stir the work, perform the dross separating work, and remove the sludge. It is an object of the present invention to provide a pre-furnace work device for an open well reactor which can perform all pre-furnace work automatically and continuously, thereby improving work efficiency, productivity and labor saving.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a trolley provided with wheels and driven by a trolley traveling drive device, and a support pedestal disposed on the trolley slidably in a direction orthogonal to the trolley traveling direction. A drive for sliding the support base that slides the support base, a support that is erected on the support base so as to be rotatable about a central axis, a drive for rotating the support that rotates the support, and a lift for the support. A slider disposed on the slider, a slider elevating / lowering drive device for elevating and lowering the slider, an arm provided on the slider, an arm rotating drive device for rotating the arm around a central axis, and the arm. At least one working jig for forcibly pushing, agitating, or slagging the input material into the melt of the open well furnace attached to the That and a drive control unit.

[0006]

[Action]

 In the present invention, the drive control unit during the pre-furnace work is based on the information of the operation process stored in advance, the drive unit for driving the carriage, the drive unit for sliding the support platform, the drive unit for rotating the support column, the drive unit for moving the slider, and the arm rotation unit. The drive device for driving is controlled. Based on the drive of these drive devices, the work jig automatically performs the necessary work such as dipping the input material, stirring work, separating dross, and slagging work.

[0007]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a front view showing an embodiment of a furnace pre-working apparatus for an open well furnace according to the present invention, FIG. 2 is a plan view with the cover of the apparatus removed, and FIG. 3 is a side view of the apparatus. In these figures, 1 is an open well furnace, and on the front side of the open well furnace 1, there are two rails 3 for traveling the furnace front working device 2 and a chain 4 positioned between these rails. It is laid in parallel with.

The furnace front working device 2 includes four wheels 6 respectively attached to a pair of front and rear axles 5 a and 5 b, and a sprocket 7 that meshes with the chain 4. 3 is equipped with a self-propelled trolley 9. The sprockets 7 are arranged in the center of the rear wheel side axle 5b. An AC motor, for example, is used as the carriage drive device 8, and when the rotation of the drive device is transmitted to the axle 5b via the rotation transmission mechanism 10, the carriage 9 travels along the rail 3 by the following mechanism. Is configured. The rotation transmission mechanism 10 is attached to one end of a reduction gear mechanism 14 including a clutch 12, bevel gears 13a and 13b, a worm and a worm wheel, a sprocket 15 attached to an output shaft end of the reduction gear mechanism 14, and an axle 5b. It comprises a sprocket 16 and a chain 17 stretched between the sprockets 15 and 16. As the clutch 12, one having excellent torque characteristics and constant torque characteristics, for example, an electromagnetic powder clutch or the like that transmits torque by using magnetic powder as a friction medium is used.

A support base 20 is disposed on the upper surface of the carriage 9, while a support base slide drive device 21 (FIG. 1) for sliding the support base 20 on the lower surface side and its rotation transmission mechanism 22 ( 1) and a driving device 32 (FIG. 3) for turning the support column 30 described later are provided. The support base 20 is moved in the front-rear direction by a pair of left and right guide members 23a and 23b that are provided opposite to each other on the upper surface of the carriage 9, that is, in the direction (arrow Y direction) that is orthogonal to the traveling direction (arrow X direction) of the carriage 9. It is held slidably. A drive device 21 for sliding the support base 20 is composed of a motor, and a rotation transmission mechanism 22 of the drive device includes a sprocket 24 attached to a motor shaft, a nut 25 attached to a lower surface of the support base 20, and a carriage 9 at both ends. A ball screw 26 that is axially supported and screwed with the nut 25, a sprocket (not shown) attached to one end of the ball screw 26, a chain 27 stretched between the sprockets, and the like. There is. When the rotation of the motor 21 is transmitted to the ball screw 26 via the chain 27 and the ball screw 26 is rotated, the nut 25 moves along the ball screw 26 in the direction perpendicular to the paper surface of FIG. The table 20 can be moved in the Y direction.

The column 30 is formed in a cylindrical shape and is erected at the center of the upper surface of the support base 20 so as to be rotatable about a central axis. The column 30 is rotated about the axis by the column rotation drive device 32 (FIG. 3). It is configured to be. The column turning drive device 32 is vertically fixed to the lower surface of the support base 20 with an output shaft (not shown) facing upward, and the upper end of the output shaft protrudes above the support base 20, A drive gear 33 (FIG. 2) meshing with a driven gear 34 (FIGS. 1 and 2) fixed to the lower surface of the column 30 is fixed to the upper end protruding portion. Therefore, when the drive device 32 is driven, its rotation is transmitted to the driven gear 34 via the drive gear 33, and the support column 30 can be rotated about the central axis.

A slider 36 is supported on the column 30 by a chain 37 (FIG. 1) so as to be lifted and lowered, and is prevented from rotating by a key 38 (FIG. 1). Both ends of the chain 37 are locked by a pair of upper and lower engaging metal fittings 39a, 39b attached to the outer peripheral surface of the slider 36, and an intermediate portion is spanned between a pair of upper and lower sprockets 40, 41. . The sprocket 40 on the upper side is rotatably arranged on the rear side of the upper end of the column 30 via a bearing member 42 (FIG. 2), and the sprocket 41 on the lower side is integrally provided on the lower end of the column 30. It is rotatably arranged on a flat base 30A via a bearing member (not shown). Further, a drive device 44 for moving the slider 36 up and down and its rotation transmission mechanism 45 are arranged on the base portion 30A. The drive unit 44 is composed of a motor, and the rotation transmission mechanism 45 is composed of an electromagnetic powder clutch 46, a reduction gear mechanism 47 composed of a worm wheel, the sprockets 40 and 41, and a chain 37. Therefore, when the motor 44 is started, its rotation is transmitted to the electromagnetic powder clutch 46, the reduction gear mechanism 47, the sprocket 41, the chain 37, and the sprocket 40, whereby the slider 36 can be moved up and down.

A horizontal arm 50 is cantilevered and arranged on the slider 36. The arm 50 is rotatably supported around the central axis, and has a first scraper (working jig) 57 for dipping the input material 55 in the molten metal 56 at the front end of the furnace at the tip, and the molten metal 56. A second scraper (working jig) 58 for performing stirring, dross sorting and slag extraction operations is provided. The first scraper 57 has a support rod 59 whose one end is flange-connected to a mounting portion 50 a provided at the tip of the arm 50 and which is orthogonal to the axis of the arm 50, and a box body 60 attached to the tip of the support rod 59. It consists of and. The second scraper 58 has an end which is flange-connected to another mounting portion 50b which is provided at the tip of the arm 50 and which is 180 ° out of phase with the mounting portion 50a, and is orthogonal to the axis of the arm 50. And a trapezoidal plate 63 attached to the tip of the support rod 62. Further, a motor 65 as an arm rotation drive device for rotating the arm 50 and a rotation transmission mechanism 66 thereof (FIGS. 2 and 3) are mounted on the slider 36. The motor 65 is mounted vertically with its output shaft facing vertically downward. The rotation transmission mechanism 66 includes a reduction gear mechanism 68 including a worm wheel, a gear 70 provided at the output shaft end of the reduction gear mechanism 68, and a gear 71 which is attached to the base end of the arm 50 and meshes with the gear 70. It consists of and. Therefore, when the motor 65 is driven, its rotation is transmitted to the gear 71 via the reduction gear mechanism 68-the gear 70, and the arm 50 can be rotated in the arrow C direction. The slider unit including the slider 36, the arm 50, the scrapers 57 and 58, the motor 65 and the like is arranged on the support column 30 in balance with the counterweight 72. The counterweight 72 is suspended from one end of the chain 73 and is accommodated in the column 30 so as to be vertically movable from above. The middle portion of the chain 73 is rotatable on the column 30 via a bearing member 74. It is hung on a sprocket 75 provided on the above, and the other end is locked to the slider 36 (FIGS. 1 and 2).

Further, a drive control unit (not shown) for driving and controlling each of the motors 8, 21, 32, 44, 65 is provided separately from the working apparatus, and a wiring relay box is provided on the working apparatus side. Box 80 is installed. The drive control unit operates before the furnace by the first and second scrapers 57 and 58, that is, an operation step (immersion operation step) forcibly pushing the charged material 55 floating on the molten metal 56 into the molten metal 56. Operation step of stirring the material 55 and the molten metal 56 (stirring operation step), operation of finely hitting the dross on the molten metal 56 (scattering operation step), and scraping of floating dross and / or bottom dross generated after melting It has a storage means for storing information on the operation process of discharging to the outside (slag operation process), and drives and controls the respective motors 8, 21, 32, 44, 65 according to this information. Information about such operation processes is provided in consideration of the molten metal state in the openwell furnace 1, the amount of the input material 55 to be charged into the openwell furnace 1, the performance of the openwell furnace 1, and the like by the operator 9 in advance. The arm 50 is actually operated by the movement or rotation of the table 20, the column 30, and the slider 36, and the operator selects the positions and the order of movement (teaching points) of each key point and stores them as operation process information. It was made. Positioning of the support 20, the column 30, the slider 36, and the arm 50 driven by the motors 8, 21, 32, 44, 65 is performed by a pulse encoder or limit switch (not shown). If necessary, it is possible to attach other operating step scrapers to the arm 50 instead of the first and second scrapers 57, 58 or in addition to these scrapers.

Reference numerals 82 and 83 are upper and lower covers for covering the furnace front work device 2.

FIG. 4 is a diagram showing teaching points in the dipping operation step of pushing the input material 55 into the molten metal 56. In this operation process, the first scraper 57 is moved up and down a required number of times while moving from the left side to the right side of the open well furnace 1. The lower end of the box body 60 of the first scraper 57 is , Teaching points T1 -T2 -T3 -T4 -T5 -T6 -T7 -T8 ... After returning to Tn, it returns to T1 again and repeats the required number of times.

FIG. 5 is a diagram showing a teaching point in the stirring operation process by the second scraper 58. In this operation step, the second scraper 58 is moved up and down twice while being immersed in the molten metal 56 and reciprocally moved. The tip of the plate 63 of the second scraper 58 returns to T1 via the teaching points T1-T2-T3-T4-T5-T6-T7-T8.

FIGS. 6A, 6B, and 6C are views showing teaching points in the step of performing a judgment operation by the second scraper 58. In this operation process, while the second scraper 58 is moved from the left side to the right side of the open well furnace 1, the plate body 63 slants the dross 88 floating on the molten metal 56 obliquely or vertically at a slight pitch. The aluminum in the dross 88 is submerged in the molten metal 56, and this is repeated many times. The tip of the plate 63 returns to T1 again through the teaching points T1-T2-T3-T4-T5-T6-T7-T8 ... Tn.

FIG. 7 is a diagram showing teaching points in the stirring operation process before the slag is discharged (or when the charged material is charged). In this operation step, while moving the second scraper 58 from the left side to the right side of the open well furnace 1, the plate 63 is gradually submerged to stir the molten metal 56, and this is repeated several times. The tip of the plate 63 returns to T1 again through the teaching points T1-T2-T3.

FIG. 8 is a diagram showing teaching points in the dross slagging operation process. In this operation step, the plate 63 of the scraper 58 is inclined to the right by a predetermined angle (φ) and moved along the surface of the molten metal 56 from the right side to the left side of the open well furnace 1 to remove the dross 88 in the surface layer portion. Discharge to the left side of the furnace, then return the plate 63 to its original position, immerse it in the molten metal 56, move the dross 88 accumulated at the bottom of the furnace from the right side to the left side, and discharge to the left side of the furnace. It is a thing. Therefore, the bottom discharge side of the furnace is inclined to facilitate the discharge of the dross 88. The tip of the plate 63 returns to T1 again through the teaching points T1-T2-T1-T3-T2, and this is repeated a required number of times.

In the open-front furnace pre-working apparatus 2 having the above-mentioned configuration, the drive control unit 80 is made to store the teaching points in advance so that the first and second scrapers 57, 58 draw a predetermined movement trajectory. In advance, the scraper 57 and the scraper 57 are used to automatically and sequentially perform the dipping operation of the input material 55, the stirring operation, the dross 88 separating operation, and the slag removing operation. Therefore, no worker is required.

The pre-furnace work performed by the pre-furnace work device 2 is not limited to the above-described operation process by changing the setting of the teaching point, but the immersion operation process and the stirring operation process or the stirring operation process, the sorting operation process, and the slag removal operation. It is also possible to combine the steps and perform them simultaneously. Further, the driving device of the present invention has been described using the motors of 8, 21, 32, 44 and 65, but the present invention is not limited to this, and a cylinder or the like can be used.

[0022]

[Effect of device]

 As described above, according to the furnace pre-working apparatus for an open well furnace according to the present invention, the working jig forcibly pushes the input material in the open well furnace into the molten metal, the operation of stirring the input material, Since it is configured to automatically perform the dross handling operation that occurs after melting and the slag removal operation that scrapes and discharges the dross, it is possible to save labor, improve the working environment, and improve productivity. Also, the device itself is relatively simple and can be manufactured and provided at low cost. In addition, depending on the worker, the quality was not constant due to individual differences and the yield rate was poor, but in the present invention, it is possible to melt under the same conditions because it is automatically done using power. Stability and yield rate can be improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a furnace pre-working apparatus for an open well furnace according to the present invention.

FIG. 2 is a plan view of the device.

FIG. 3 is a side view of the device.

FIG. 4 is a diagram showing teaching points in a dipping operation process of pushing a charging material into a molten metal.

FIG. 5 is a diagram showing teaching points in a stirring operation process of an input material.

6A, 6B, and 6C are diagrams showing teaching points in a dross separating operation process.

FIG. 7 is a diagram showing teaching points in a stirring operation process before slag extraction (or at the time of input of input material).

FIG. 8 is a diagram showing teaching points in a dross slag removing operation process.

[Explanation of symbols]

 1 Open Well Furnace 2 Front Furnace Working Device 3 Rails 6 Wheels 8 Vehicles Driving Device 9 Vehicles 20 Supports 21 Supports Slide Driving Device 30 Struts 32 Strut Turning Drives 36 Slider 44 Slider Elevating Drives 50 Arms 55 Input material 56 Molten metal 57 First scraper 58 Second scraper 65 Arm rotation drive device

Front page continued (72) Hideya Kumakura, 3-13-12, Mita, Minato-ku, Tokyo Japan Light Metal Co., Ltd. (72) Hiroyuki Ichisuki, 3-13-12, Mita, Minato-ku, Tokyo Nihonkaru Within Kinka Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A trolley having wheels, which is driven by a trolley traveling drive device, a support pedestal slidably arranged on the trolley in a direction orthogonal to the trolley traveling direction, and a support for sliding the support pedestal. A table slide drive device, and a support erected on the support base so as to be rotatable around a central axis,
A support device for rotating the support device for rotating the support device, a slider arranged on the support device so as to be able to move up and down, a drive device for moving the slider up and down, an arm provided on the slider, and the arm. A drive device for rotating the arm about an axis, and at least one work jig attached to the arm for forcibly pushing, agitating or slagging the charged material into the melt of the open well furnace, A furnace pre-working apparatus for an open well furnace, comprising: a drive control unit that drives and controls each of the drive devices.