JPH1199364A - Method and device for recovering aluminum cutting chip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate aluminum chip and resin chip well and to improve handling property and solubility. SOLUTION: In an aluminum/resin separator, first a mixture of aluminum chip and resin chip is fed to a drum type rotary mesh screen 10 from an inlet chute 9, and the resin chip in the shape of long fiber are separated as an oversize product, and next the aluminum chip and the fine resin chip which become a undersize product are separated in a directional mesh screen 16 giving directivity to air sent from a blower 14 through an air chamber 15, thereby only the aluminum chip are effectively recovered. Preferably, furthermore, the obtained aluminum chip are carried to a separate aluminum chip press by the conventional method to subject them to stamping, allowing both handling property and solubility to be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for collecting aluminum cutting chips, particularly aluminum cutting chips generated during the production of heat-insulated profiles used for heat-insulating sashes and freezers.

[0002]

2. Description of the Related Art When manufacturing aluminum insulation profiles,
For example, as shown in the sectional view of FIG.
It is necessary to provide a cutting portion 3 with a resin 2 interposed therebetween to separate the room indoors (right side in the drawing) and the outdoors (left side in the drawing), and in such a process, aluminum chips and resin chips are generated.
The following is a list of methods that have been conventionally used or attempted to separate aluminum chips and resin chips.

1) Sorting by wind force (1) Gravity type As shown in a schematic cross-sectional view of FIG. 3, a mixture of aluminum chips and resin chips introduced from a hopper 6 and developed on a mesh 7 is viewed from below. The resin chips 4 are conveyed upward through the zigzag channel 8 so as to be opposed to the air flow, and guided to the resin discharge port, and are separated from the lower end of the inclined mesh 7 by taking out the aluminum chips 5. (2) Centrifugal type As shown in the cross-sectional view of FIG. 4, a mixture of aluminum chips and resin chips is supplied from a chute 9 to a rotating drum-type mesh sieve 10 having a mesh 7 and air is blown by a blower. The resin chips 4 are obtained as a product on the sieve while being sent, and the aluminum chips 5 with short fiber resin are obtained as a product under the sieve. (3) Inertial equation As shown in the schematic cross-sectional view of FIG. 5, a mixture of aluminum chips and resin chips is supplied from the inlet chute 9, and the primary air 11 flowing in parallel with the mixture is sent in obliquely from the side. Secondary air 12
A rotary force is applied to the supply along the container, and the inertia force is used to guide the resin chips 4 into the air sent upward and to separate the aluminum chips 5 from the lower part.

2) Sorting by Electromagnetic Force As shown in a schematic perspective view of FIG. 6, a series of permanent magnets whose magnetic poles are alternately arranged on the outer periphery of a rotor 13 are arranged, and an alternating magnetic field is generated by rotation of the rotor. If a metal piece is present in the alternating magnetic field, a loop-shaped current flows, and the magnetic field generated by the current always has the same polarity as the alternating magnetic field of the rotor, so that the conductor instantaneously repels and separates from the rotor.
On the other hand, since the alternating magnetic field does not affect the non-conductor, the non-conductor flows along a normal falling trajectory and separates from the conductor. By setting a magnetic field alternation cycle according to the conductivity and size of the processed material, fine aluminum pieces can also be separated.

[0005]

However, the aluminum chips accompanying the resin chips generated during the production of the aluminum heat-insulated profiles are generated in a state where the resin chips and the aluminum chips are entangled. It is difficult to effectively separate and collect only aluminum chips by the above-mentioned separation method. Conventionally, it has been often the case that both are mixed and treated as industrial waste. In addition, even if it can be separated, there is a problem that the separation from the resin chips is not sufficient and the recovery yield of the aluminum chips is poor. Therefore, an object of the present invention is to provide a recovery method and a recovery apparatus that can efficiently separate aluminum chips from resin chips and resin chips that are entangled to obtain a high recovery yield.

[0006]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to achieve the above-mentioned object, and as a result, a mixture of aluminum chips and resin chips was firstly subjected to centrifugal wind separation to form a mixture of the two. Efficient aluminum chips can be removed by removing the original long-fiber resin chips and separating the aluminum chips and short-fiber resin chips by gravity-type wind separation The present inventors have found that it becomes possible to recover the present invention, and have reached the present invention.

That is, according to the present invention, first, in the method for recovering aluminum cutting chips, after separating long-fiber-shaped resin chips from the resin chips mixed into the aluminum chips, fine resin chips are separated. 2. A method for recovering aluminum cut chips, wherein the separation of the long-fiber resin chips is performed by a rotating drum-type mesh sieve. Thirdly, a drum-type rotary mesh sieve for separating long-fiber-shaped resin chips from resin chips mixed in the aluminum chips; Equipped with a directional mesh sieve that gives a certain direction to the passing air to separate the powder and fine resin chips, and a blower that supplies air to the directional mesh sieve, Aluminum cutting chips, wherein the directional mesh sieve is provided with a blower below the directional mesh sieve, and arranged so as to directly supply the sieved fraction separated by the drum-type rotary mesh sieve to the directional mesh sieve. The present invention provides a collection device.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The feature of the recovery method of the present invention is that a mixture of aluminum chips and resin chips is first separated from each other by a centrifugal type air separation method using a drum-type rotating mesh sieve. Remove the long-fibre resin chips and then use a directional mesh sieve to separate the aluminum chips and short-fibre resin chips by gravity-type wind-screening. An object is to efficiently collect chips.

That is, the recovery apparatus of the present invention is provided with a directional mesh sieve below the drum-type rotary mesh sieve, and a blowing facility including a blowing blower and an air chamber below the directional mesh sieve. Of the drum-type rotary mesh sieve (aluminum chips and short-fibre resin chips) from which the resin chips in the shape of the drum are removed, are supplied directly to the directional mesh screen,
The aluminum swarf is conveyed to one end of the sieve by an airflow from below having a uniform direction. On the other hand, the short fiber resin chips are carried upward according to the air flow and collected separately.

If the two-stage mesh sieve is arranged in the same box, the location of the apparatus may be reduced to a point at which the portion below the rotary mesh sieve is supplied to the directional mesh sieve or the resin chips are collected. It is convenient in terms of dust collection.

Further, since aluminum chips are collected in the form of fine pieces, some of them are burned before being melted as they are, so it is desirable to press-mold them by pressing.

In general, when the apparent specific gravity is less than 0.5, the hardened material is easily broken and the handling property is poor. On the other hand, when the apparent specific gravity is more than 2.2, the voids in the hardened aluminum chips are insulated. The heat is not sufficiently transmitted to fulfill the role of the material, and the solubility is reduced. Hereinafter, the present invention will be described in more detail by way of examples. However, the scope of the present invention is not limited by the following examples.

[0013]

FIG. 1 (a) shows the aluminum / metal used in this embodiment.
FIG. 2A is a schematic sectional view showing a resin separator, and FIG.
A′-A ″ cross-sectional view of FIG. 7, and FIG. 7 is a processing system diagram showing an aluminum cut resin collecting apparatus and related equipment of the present invention mainly using an aluminum / resin separator. explain.

The mixture of the aluminum chips and the resin chips generated in the cutter chamber 17 is collected in a lower storage tank of a dust collector 18 by an induction fan 19 in the upper part of the drawing, and is then separated by an aluminum / resin separator 20.
Supplied to In this separator 20, as shown in FIG.
From the mixture supplied to the drum-type mesh sieve 10 rotating from the inlet chute 9, long-fiber-shaped resin chips are removed as on-screen products from the mixture supplied to the drum-type mesh screen 10. The swarf is conveyed to the end of the sieve while being sent to the air flow in a directional mesh sieve 16 which gives directionality to the air sent from the blower blower 14 via the air chamber 15. On the other hand, the finer resin chips are discharged from above in accordance with the upward airflow, and FIG.
The dust is collected by the dust-collecting machine 18 by the induction fan 19 on the right side to become the resin chips 24.

The aluminum chips separated by the directional mesh sieve 16 are pressed by an aluminum chip pressing machine 22 by a conveyor 21 so as to have a predetermined apparent specific gravity (0.5 to 2.2). The resulting aluminum chips 23 are obtained. In FIG. 7, a portion surrounded by a dotted line is a collection device of the present invention.

[0016]

As described above, the mixture of aluminum chips and resin chips generated during the production of aluminum heat-insulated profiles has conventionally been often treated as industrial waste. According to the method, after separating the long-fiber resin chips from the resin chips mixed into the aluminum chips, the fine resin chips are separated, so that the recovery rate of the aluminum chips is good. The application of a rotating drum-type mesh sieve is effective for separating the long-fiber-shaped resin chips that are the source of both entanglements. Therefore, the recovery device of the present invention, a drum-type rotary mesh sieve can be arranged vertically, then a directional mesh sieve for separating aluminum chips and fine resin chips and a blowing facility for sending air to it, respectively. In this way, space is reduced and workability is excellent.

[Brief description of the drawings]

FIG. 1 (a) is a schematic side sectional view showing an aluminum / resin separator used in an embodiment of the present invention, and FIG. 1 (b) is an A′-A ″ sectional view of FIG. 1 (a). It is.

FIG. 2 is a cross-sectional view showing an example of an aluminum heat-insulated profile.

FIG. 3 is a schematic side cross-sectional view illustrating a gravity type wind separation method.

FIG. 4 is a schematic side cross-sectional view illustrating a centrifugal wind power sorting method.

FIG. 5 is a schematic side cross-sectional view illustrating an inertial wind power selection method.

FIG. 6 is a schematic perspective view illustrating a sorting method using an electromagnetic force.

FIG. 7 is a processing system diagram showing an apparatus for collecting cut aluminum swarf of the present invention, which is mainly composed of an aluminum / resin separator, and its related equipment.

[Description of Signs] 1 Aluminum profile 2 Resin 3 Cutting part 4 Resin swarf 5 Aluminum swarf 6 Hopper 7 Mesh 8 Zigzag channel 9 Inlet chute 10 Drum type rotary mesh sieve 11 Primary air 12 Secondary air 13 Rotor 14 Ventilation Blower 15 Air chamber 16 Directional laminated mesh sieve 17 Cutter room 18 Dust collector 19 Induction fan 20 Aluminum / resin separator 21 Conveyor 22 Aluminum chip press machine 23 Pressed aluminum chip 24 Collected resin chip

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hironobu Kato 13-3 Nagonoe, Shinminato City, Toyama Prefecture Inside Toyama Light Metal Industry Co., Ltd. (72) Inventor Toshimasa Haginaka 13-3, Nagonoe, Shinminato City, Toyama Prefecture 3 Toyama Light Metal Industry Inside (72) Inventor Masaya Tanabe 70 Hayakawa, Takaoka City, Toyama Prefecture Inside Sankyo Aluminum Industry Co., Ltd. (72) Inventor Genji Sawada 70 Hayakawa, Takaoka City, Toyama Prefecture Inside Sankyo Aluminum Industry Co., Ltd. (72) Inventor Yasuhiro Nishibuchi 351 Ejiri, Takaoka City, Toyama Pref.

Claims (3)

[Claims] 1. A method for collecting aluminum cutting chips, comprising separating a long-fiber-shaped resin chip from resin chips mixed into the aluminum chips, and then separating fine resin chips. How to collect cut chips. 2. The method according to claim 1, wherein the separation of the long-fiber resin chips is performed by a rotating drum-type mesh sieve.
A method for collecting aluminum cutting chips as described above. 3. A device for collecting aluminum cutting chips, comprising: a drum-type rotary mesh sieve for separating long-fiber resin chips among resin chips mixed into the aluminum chips; Equipped with a directional mesh sieve that gives a certain direction to the passing air to separate resin chips, and a blower that supplies air to the directional mesh sieve, a directional mesh sieve is placed below the drum-type rotating mesh sieve. And a blower installed below the directional mesh sieve, and arranged so as to directly supply the sieved material separated by the drum-type rotary mesh sieve to the directional mesh sieve.