JP3559871B2 - Metal chip recovery device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an apparatus for collecting metal chips. In a factory provided with a melting furnace for melting special steel and other metals, chips generated by metal machining are put into a melting furnace as a part of the material for producing the metal for reuse. . In particular, in the case where the metal is a rare metal such as a rare metal which is also called a new metal in recent years, or a material containing the same, the necessity is high.
[0002]
[Prior art]
Conventionally, when chips of this kind are put into a melting furnace, they are roughly classified into a specification in which the chips are put in a bulk and a specification in which they are put in a cloth or a paper bag. According to this, chips on the surface of the molten metal in the melting furnace or in the vicinity thereof become sparks, soaring on the rising airflow in the furnace, which is extremely dangerous. In addition, when a large amount of chips is thrown in at once, there is a high risk of explosion due to the moisture and moisture contained in the chips.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to provide an apparatus for charging metal chips into a melting furnace, that is, recovering the metal chips without inconvenience as in the related art.
[0004]
[Means for Solving the Problems]
The present invention provides a means for delivering metal strips or blanks of the same quality as the chips to be recovered, a forming machine for forming the metal strips or blanks into a cylindrical shape, and closing a cylindrical bottom of a cylindrical metal strip or a blank. A forming machine for forming the container into a container, a forming machine for forming the same so as to close the upper part of the cylinder of the strip or blank, a charging device for charging the chip to be recovered into the container with a metal strip or a blank, and a container for the container. A metal chip collecting device having an ejector for forming the metal strip or the blank into a cylindrical shape, wherein the forming machine rotates to wind the metal strip or the blank. A clearance is provided between the winding cylinder and a cylindrical case surrounding the winding cylinder, The base is provided with a slit whose lower end is open so that one end of the metal strip or blank passes therethrough, and a chuck is provided on the winding cylinder peripheral surface. By operating the winding cylinder while being gripped, the upper end of the strip or blank is guided by the clearance to form the strip or blank into a cylindrical shape .
[0006]
For the purposes of the present invention, a melting furnace refers to a furnace that melts the material in order to obtain a metal product as described at the outset.
[0007]
In the present specification, regarding the present invention, the term "homogeneous" in the term "homogeneous to the metal to be recovered" literally has the same properties as the metal to be recovered, and even if mixed with the molten metal material in the melting furnace, A property that does not substantially impair physical properties.
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic perspective view of the recovery apparatus A of the present invention , and FIG. 2 is a schematic plan view of a part of the recovery apparatus . As shown in these figures, the apparatus A has a preferable configuration for continuously manufacturing a container W made of a metal strip into which metal chips are put.
[0009]
The collection device A includes a delivery section 1 for the metal strip P, a molding machine 2 for forming the metal strip into a cylindrical shape (details are shown in FIG. 3), and a container W with its cylindrical bottom closed. A molding machine 3 for molding and a molding machine 5 for molding the container W so as to close an upper portion thereof are provided. Further, a loading device 4 for feeding metal chips into the container W, and a discharge device 6 for the container W connected thereto so as to supply recovered chips to the melting furnace are provided.
[0010]
In the feeding section 1, a metal strip P having a coil shape, a base B on which the coil 10 is mounted, guide rollers R1, R1, drive rollers R2, R2, and a cutter 12 are sequentially arranged in the transport direction of the metal strip P. Are located. The rollers R 'supporting the lower end of the strip P are appropriately arranged as needed (only one is shown in FIG. 1).
[0011]
The base B has a circular table 11 whose center is pivotally supported, and a plurality of rollers R for smooth rotation are arranged around the lower surface of the table. The base B itself does not have a drive mechanism, but can be rotated when the strip P is sent to the molding machine 2 by the drive roller R2.
[0012]
Instead of the coil-shaped metal strip P, it is also possible to use a blank cut into a sheet having a length corresponding to one container W. In this case, a blank supply device may be provided instead of the base B. Further, the cutter 12 is not required. The cutter 12 has one end fixed to the piston rod end of the cylinder device S and the other end pivotally connected to a part of the frame of the device A so that the metal strip is sheared by the operation (extension) of the cylinder device S. Supported. An electrical or mechanical sensor (not shown) for detecting the feed length of the metal strip P can be provided at a suitable location. A base for fixing the metal strip when the cutter 12 is sheared is not shown.
[0013]
The molding machine 2 for forming the container W is provided with a winding cylinder 20, and a pair of chucks 6, 6 for gripping a metal strip wound around the cylinder. The rails G, G are fixed to a part of the frame of the device A and guide the metal strip P.
[0014]
The winding cylinder 20 is rotatable by a drive motor (not shown), and has a lower end portion 22 formed in a wedge shape, and an upper portion disposed in a cylindrical case 21 concentrically therewith. Between the cylinder 20 and the case 21, there is provided a clearance of an appropriate size for accommodating the metal strip P to be wound. The case 21 is provided with a slit 23 whose lower end is open so that one end of the strip P passes therethrough.
[0015]
The circumferential surface of the cylinder 20 is provided with two chucks k having an L-shaped cross section that can be opened and closed in the radial direction of the cylinder. The end of the metal strip P is gripped between the L-shaped hook portion (see FIG. 3C). The drive mechanism of the chuck k may be a known drive unit such as an electromagnet and a spring incorporated in the internal space of the cylinder 20.
[0016]
As shown in FIG. 3, the winding cylinder 20 is slidably mounted on a vertical guide rod 24 by an arm-shaped bracket, and can be moved vertically by the operation of a cylinder device S1 provided in parallel with the rod. .
[0017]
As a forming machine 3 for folding and closing the bottom of the cylindrical metal strip by the operation of a cylinder (not shown), press dies 30, 30 are arranged opposite to each other so as to sandwich the cylindrical bottom. FIG. 1 shows only one pressing die 30.
[0018]
A hopper 4 is provided as an input device 4 for the metal chips to be collected. Above the discharge port 40 at the lower end of the hopper, upper and lower two-stage shirts 41 and 42 are provided. These shutters can be individually moved horizontally by a cylinder device (not shown), and constitutes a constant-rate dispenser for metal chips.
[0019]
When the shutter 42 is in the closed position and the shutter 41 is opened, chips in the hopper 4 are filled in the chamber separated by the shutters 41 and 41, and when the shutter 41 is in the closed position, the shutter 42 is opened and Chips fall from the outlet 40.
[0020]
A molding machine 5 for closing the opening at the upper end of the container W into which the chips are placed is disposed downstream of the charging device 4. The dies 50 of the molding machine are substantially the same as the dies 30 of the molding machine 2.
[0021]
An opening for directly throwing the container W into a predetermined melting furnace by opening the chucks 6 and 6 can be provided below the molding machine 5 of the apparatus A. Alternatively, a configuration may be adopted in which a conveyor is disposed below the molding machine 5 and the end side of the conveyor is connected to a predetermined melting furnace.
[0022]
Next, the operation of the recovery device A will be described.
[0023]
The metal strip P is guided by the guide roller R1 by the rotation of the drive roller R2, is sent out in the direction of the arrow X, and is sent to the molding machine 2 by a length corresponding to one container W. At this time, the strip P is guided by the rails G, G and the slit 23 of the case 21. The end of the strip P is gripped by the chuck k on the peripheral surface of the winding cylinder 20. Next, the cutter 12 is driven by the operation of the cylinder S, whereby the strip P is sheared.
[0024]
After the shearing, the winding cylinder 20 rotates in the winding direction (the direction of the arrow V in FIG. 2). During rotation, the upper end of the strip P is guided by the clearance between the cylinder 20 and the case 21 . The cylindrical container W is formed by the rotation of the cylinder 20 (usually, the cylinder 20 is rotated at an angle of more than one rotation in order to take a margin). At the end of the winding, the cylinder 20 has the wedge-shaped inclined surface of the tip end portion 22 facing the pressing die 30.
[0025]
Next, the chucks 6, 6 protrude from between the guide rails G, G as shown in FIG. After the lower end of the container W is bent and closed by the operation of the pair of pressing dies 30, the winding cylinder 20 moves upward by driving the cylinder S1. Thereby, the container W whose upper end is open is formed.
[0026]
The container W is horizontally moved below the discharge port 40 of the hopper 4 while being gripped by the chucks 6, 6, and metal chips are supplied to the container W from the hopper by operating the shutters 41, 42.
[0027]
The metal chips to be recovered may be supplied directly to the hopper 4, but are preferably supplied through a dryer 7. The container W into which the metal chips are put further moves to the molding machine 5 while being gripped by the chucks 6, 6, and the upper ends are closed by the pressing dies 50, 50 by the operation of a cylinder (not shown). The container W thus closed is dropped by opening the chucks 6,6.
[0028]
When the container W formed as described above and into which the metal chips are thrown is dropped into the melting furnace, it does not scatter as a spark on the surface of the molten metal, but reaches deep into the molten metal and is then melted to collect the metal chips. Can be performed safely and reliably.
[0029]
The preferable thickness of the metal strip can be appropriately determined by experiments in consideration of the temperature of the melting furnace and other conditions.
[0030]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, a metal chip can be thrown into a melting furnace, ie, it can be collect | recovered, without accompanying the inconvenience which existed conventionally.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a recovery device A of the present invention .
FIG. 2 is a schematic plan view of the recovery device A.
3A is a front view of the molding machine 2 of the recovery apparatus A, FIG. 3B is a side view of the molding machine, and FIG. 3C is a schematic cross-sectional view taken along line II of FIG. 3A.
[Explanation of symbols]
Reference Signs List A Collection device 1 Sending means 2 Molding machine 3 Molding machine 4 Hopper 5 Discharger 6 Chuck 7 Dryer 12 Cutter 30 Press die 41 Shutter 41 Shutter 50 Press die P Metal strip B Base R1 Guide roller R2 Guide roller G Rail W Container k Chuck 20 winding cylinder 21 case 22 wedge 23 slit 24 guide rod

Claims (1)

Means for delivering metal strips or blanks of the same quality as the chips to be recovered, forming machines for forming the metal strips or blanks into cylinders, and closing the cylindrical bottoms of the cylindrical metal strips or blanks into containers. A molding machine for molding the same, a molding machine for molding the strip or blank so as to close the upper part of the cylinder, an input device for inputting chips to be collected into the container by a metal strip or blank, and an ejector for the container A metal chip recovery device comprising:
The molding machine for forming the metal strip or blank into a cylindrical shape includes a winding cylinder for rotating and winding the metal strip or blank, and a cylindrical cylinder surrounding the winding cylinder and the winding cylinder. A clearance is provided between the case and the case, the case is provided with a slit whose lower end is opened so that one end of the metal strip or blank passes therethrough, and a chuck is provided on the winding cylinder peripheral surface, When the end of the strip or blank is gripped by the chuck and the winding cylinder is operated, the upper end of the strip or blank is guided by the clearance to form the strip or blank into a cylindrical shape. A feature for collecting metal chips.

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