JP2001113532A - Sorting method for steel furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sorting method to be adapted to steel furniture comprising a steel furniture main body and the decorative member attached thereto so as to be prevented from falling off to simply and efficiently sort the furniture main body and the decorative member so as to respectively recycle them. SOLUTION: A short-blasting material 32 is made to collide with steel furniture in a predetermined treatment space 2 to peel a decorative member 12 from a furniture main body 11 by the impact of the shot-blasting material to make it possible to easily sort the furniture main body 11 and the decorative member 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel furniture comprising a decorative member attached to a steel furniture main body so as not to fall off. The present invention relates to a method for separating steel furniture, which can be easily separated from a furniture body by separating the steel furniture.

[0002]

2. Description of the Related Art Conventionally, there is a steel furniture which is attached to a steel furniture body so that a decorative member cannot be dropped off. For example, a top plate such as a desk in which a melamine resin decorative plate is adhered to a steel top plate body with an adhesive corresponds thereto.
A melamine resin decorative board is very useful, for example, the surface finish is beautiful and the surface hardness is high.

[0003]

In recent years, however, there has been an increasing interest in environmental issues, and there has been a need to separate and recycle furniture by component. However, in the case of steel furniture typified by the above-mentioned top plate, it is extremely difficult to separate the decorative members because the decorative members are closely and strongly attached to the furniture body, and the furniture members are directly discarded as industrial waste. At present, the steel furniture is mainly separated as a low-quality steel material after being separated manually by a considerable amount of time or roughly separated by a large-scale pulverizer.

In response to such a problem, the decorative member is attached to the furniture body with an adhesive in a state where the paper or the like is sandwiched between the furniture body and the decorative member. A method of separating the furniture body and the decorative member while tearing is also considered, but in such a case, it is difficult to effectively dispose of the separated furniture body and the decorative member because the paper and the like remain in a bonded state, and There is a problem that the number of parts increases.

[0005]

DISCLOSURE OF THE INVENTION In view of the above problems, the present invention simplifies and effectively separates a furniture main body from a decorative member by colliding an abrasive material with steel furniture by the impact. It is a method that can be done.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method for separating steel furniture according to the present invention is applied to steel furniture comprising a steel furniture main body and a decorative member attached to the furniture main body so as not to fall off. In the processing space of the above, the abrasive material collides with steel furniture, the decorative material is crushed by the impact and peeled from the furniture main body, so that the furniture main body and the decorative member are separated. I do.

[0007] According to such a method, the furniture body and the decorative member are connected to the conventional steel furniture which is attached to the furniture body so that the decorative member cannot fall off, by merely colliding the abrasive material. It can be easily separated. Therefore, since the furniture main body and the decorative member can be separately recycled as resources, the amount of waste can be reduced, and it is possible to sufficiently cope with environmental problems.

As a decorative member suitable for applying such a method, there is a decorative member which is a melamine resin decorative plate and which is attached to a furniture body by an adhesive. Such a melamine resin decorative board is excellent in hardness and heat resistance, etc., so it is widely used as a very useful decorative board for furniture in general, but on the other hand, it is strongly adhered to the furniture body, so it is separated. It is very difficult to incinerate and it is difficult to reuse and dispose of it. Therefore, by applying the present invention to furniture having such a melamine resin decorative board, the decorative board is easily peeled off from the furniture body,
The crushed decorative board can be collected and recycled easily. Further, according to such a method, the recycling of the furniture body is of course easy.

As a melamine resin decorative plate to which the present invention is adhered, a top plate body constituting a top plate such as a desk or a table is preferable for applying the present invention. In particular, in order to reduce the cost of treatment by shredding the decorative member into appropriate sizes that are easy to collect and recycle without shattering, and that make it easy to regenerate without leaving the decorative member on the furniture body Preferably, the abrasive is a copper ball or a copper alloy ball.

Further, in order to collect the crushed decorative members for each size and to improve the convenience of recycling, the separated and crushed decorative members in the processing space can be collected by size through a sieve. It is desirable to have. According to the above method, dust is generated in the processing space and the like,
If the dust is discharged as it is, the air may be polluted. However, in order to effectively avoid such a risk, it is desirable to classify the dust-containing air into dust and clean air using a filter.

Further, in order to increase the efficiency of separating the furniture body from the decorative member and to make the crushed decorative member easily recyclable, the projection speed of the abrasive, the size of the abrasive,
Alternatively, it is effective to adjust the processing time.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In this embodiment, a sorting apparatus A as shown in FIG. 1 is used to implement a tabletop 1 such as a desk or a table as a steel furniture. The top plate 1 includes a top plate body 11 obtained by retroactively deforming a sheet metal material, and a top plate body 11.
And a decorative plate 12 made of a melamine resin, which is a decorative member adhered so as not to fall off with an adhesive. The adhesive used in this example is a chloroprene rubber-based solvent-based adhesive.

As shown in FIG. 1, the sorting apparatus A mainly includes a processing chamber 2 serving as a processing space in which a top plate 1 to be processed is to be installed in a main body Aa of the apparatus, and a processing chamber 2 having a top. A projection unit 3 for projecting a cleaning material, and a top plate body 11 in the processing chamber 2.
Transporting means 4 for transporting the fragments 12a of the decorative board 12 peeled off from the paper, and size classifying means 5 for classifying the fragments 12a of the decorative board 12 transported by the transporting means 4 by size
And dust collecting means 6 for collecting dust 12c and the like generated in the process from the processing chamber 2 to the size classifying means 5.

More specifically, according to the conceptual diagram shown in FIG. 1, a hook 21 is provided in the processing chamber 2 so that the top plate 1 can be suspended. The projection means 3 includes a copper sphere or copper alloy sphere 32 serving as an abrasive material on the top plate 1 suspended in the processing chamber 2.
And two upper and lower rotors 31 facing the inside of the processing chamber 2 so as to be able to project at a predetermined speed (for example, 70 to 90 m / s). The copper sphere or copper alloy sphere 32 has, for example, a diameter of 2.5 mm and a Vickers hardness (Hv) of about 110. That is, as a result of projecting a copper ball 32 or the like onto the top 1, the top 1 is made up of the top main body 11 and the top main body 1.
The pieces 12a, 12 of the decorative board 12 peeled and crushed from 1
b. The transporting means 4 includes a copper ball 3
2 and fragments 12a of decorative panel 12 peeled off in processing chamber 2, 1
Main screw 41 receiving the lower part of the processing chamber 2
And the elevator screw 42, the copper spheres 32 and the like 12 sent from the screws 41 and 42
a and 12b are constituted by a bucket elevator 43 which is lifted up on the side of the processing chamber 2. Size classification means 5
Is composed of a rotary sieve 51, and the copper balls 32 and the like 32 conveyed from the bucket elevator 43 and the fragments 12 a and 12 b
Are sifted by size. The size of the copper ball 32 or the like is about 2.5 mm in diameter as described later, and the relatively large pieces 12a are about 2 cm on average.
The size is about four sides. And this rotating sieve 51
The copper balls 32 etc. sieved in the above process are returned to the rotor 31, and the pieces 12a of the decorative plate 12 which have been crushed to some extent are stored in the receiving box 8 through the discharge pipe 7 extending to the outside of the apparatus main body Aa. The dust-containing air containing the small pieces 12b and the smaller dust 12c is sent to the dust collecting means 6. Here, the relatively large pieces 12a of the decorative board 12 stored in the receiving box 8 are to be recycled. The dust collecting means 6 includes a duct pipe 63 extending from the processing chamber 2, a duct pipe 64 extending from the size classifying means 5 and the transporting means 4, a filter chamber 61 provided at a distal end side of the duct pipes 63 and 64, and a filter chamber. 61 and a dust tank 62 provided below. The filter chamber 61 is provided with a filter (not shown) inside, and filters the dust-containing air generated in the processing chamber 2, the conveying means 4 and the size classifying means 5 sent through the duct pipes 63 and 64 on the inner surface of the filter. Then, the dust 12c and the small fragments 12b are stored in the dust tank 62, and the clean air is discharged to the outside of the apparatus A through the exhaust port 65.

When the top plate 1 is separated into the top plate main body 11 and the decorative plate 12 using such a separation apparatus A, the top plate 1 is suspended in the processing chamber 2 and the rotor is rotated at a predetermined speed for a predetermined time. 31
And projecting a copper ball 32 or the like. When the copper ball 32 or the like collides with the top plate 1, the decorative plate 12 is crushed by the impact and the top plate 1
Peel off from one. Fragment 1 of the decorative panel 12 that has peeled off
The copper balls 2a, 12b and the projected copper spheres 32 are sent to the size classifying means 5 through the conveying means 4, sieved and separated by the rotary sieve 51, and the fragments 12a having a size suitable for recycling are discharged from the discharge pipe. While being stored in the receiving box 8 through 7, copper balls 32 and the like 32 are returned to the rotor 31. The dust-containing air generated in the processing chamber 2 and the size classifying means 5 and the relatively small pieces 12b of the decorative plate 12 not sent to the receiving box 8 are sent to the filter chamber 61 through the duct pipe and are filtered by the filter. After the filtration, the clean air is discharged, and the dust 12c and the small pieces 12b are stored in the dust tank 62. What is stored in the dust tank 62 can be recycled as needed, depending on the material.

Here, a separation test of the top plate 1 to which the present embodiment is applied will be described together with a comparative test. FIG. 2 shows the conditions and results of this test. First, in Comparative Tests 1 and 2, a steel ball having a diameter of 2.5 mm was used as a polishing material, and the steel ball was used for 70 minutes each for 5 minutes or 3 minutes.
The light was projected onto the top 1 at a speed of about 90 m / s. As a result, the melamine resin decorative board 12 was finely pulverized, hardly collected in the receiving box 8, and mostly collected in the dust tank 62. That is, since the hardness of the steel ball is too high, the steel top plate body 11 and the decorative plate 12 can be separated, but under this condition, the decorative plate 12 can be collected in a size sufficiently suitable for recycling. could not.

On the other hand, in Tests 1 to 3, copper spheres and copper alloy spheres 32 were used as a polishing material as in this embodiment, and at a speed of 70 to 90 m / s for 10 minutes, 5 minutes, and 3 minutes, respectively. The light was projected on the top 1. As a result, in this test 3 in which the projection time was 3 minutes, the decorative plate 12 slightly remained on the top plate body 11 and the two could not be completely separated, but the projection time was longer than that. In the tests 1 and 2, the pieces 12 of the decorative board 12 crushed to a size suitable for recycling were used.
a was able to be collected in the receiving box 8. This is because, when comparing this test and the comparative test, considering that the conditions other than the material of the abrasive material are the same, the copper balls and the copper alloy balls 32 are softer materials than the steel balls, It is considered that the impact on the top plate 1 is appropriately reduced.

According to the method of the present embodiment as described above, the copper spheres or copper alloy spheres 32, which are the abrasive material, collide with the top plate 1 in the processing space, and fall into the top plate body 11, which is the furniture body. Since the decorative plate 12, which is an improperly mounted decorative member, can be easily and quickly peeled off from the top plate body 11, a very excellent sorting method with good work efficiency can be achieved. In addition, by separating the top plate body 11 and the decorative plate 12 in this way, both can be recycled and reused, so that there is no need to dispose of them and the amount of garbage can be reduced. It is also possible to respond to environmental problems.

In particular, in the present embodiment, the decorative plate 12 is made of a melamine resin adhered to the top plate body 11 with an adhesive. Although a great deal of labor is required to peel off such a melamine resin decorative plate 12 by hand, according to the present embodiment, there is no need for a mounting structure for attaching and detaching the decorative plate 12 to and from the top plate 1. The melamine resin decorative plate 12 which has been used conventionally can be separated very easily.

Further, a sphere 32 made of copper or a copper alloy is used as a polishing material.
The decorative board 12 can be peeled and crushed into an appropriate size suitable for recycling without being excessively crushed. Furthermore, since such a copper ball or a copper alloy ball is softer than the steel top plate main body 11, the decorative member 12 and the top plate main body 11 are maintained while maintaining the size of the crushed decorative member 12 at an appropriate level.
And the top plate main body 11 can be easily recycled.

Further, the decorative plate 12 peeled from the furniture body
Are collected according to their size by the size classification means 5, so that they can be classified into those suitable for recycling and those not suitable for recycling, and the loss in the process of recycling the material can also be reduced. In addition, since small pieces 12b and dust 12c of the decorative board 12 are also collected and filtered by a filter, they are not discharged into the environment, and air pollution caused by the sorting process can be prevented. .

The method for separating steel furniture according to the present invention is not limited to the above-described embodiment. If the projection speed and the size of the abrasive material or the processing time can be appropriately adjusted, the abrasive material can be separated. Even if a material other than a copper ball or a copper alloy ball is used, appropriate separation treatment can be achieved. When a zinc alloy sphere having a hardness (Hv) of about 60, which is softer than a copper sphere or the like, is used as a cleaning material other than the copper sphere or the like, the decorative member can be peeled off as larger pieces, Reproduction efficiency can be improved. Further, in addition to the top plate, in various kinds of furniture such as a panel of a toilet booth or a kitchen panel to which a melamine resin decorative plate is attached, a furniture main body and a decorative member can be separated. In addition, the present invention is also applicable to furniture in which various resin parts are attached to a steel furniture body. In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0023]

The present invention is embodied in the form described above and has the following effects. That is, the method for separating steel furniture of the present invention separates and crushes the decorative member from the furniture main body by the impact of the abrasive material colliding with the steel furniture, and separates the two. Both of the members can be appropriately recycled. In addition, according to such a method, since they can be separated very easily, the working efficiency can be extremely high. Furthermore, it is possible to eliminate the necessity of disposing of steel furniture, and to cope with recent environmental problems.

In particular, when the decorative member is a decorative plate made of a melamine resin, it has conventionally been extremely difficult to separate the decorative member from the furniture body. However, by applying the present invention, the furniture body can be easily removed from the furniture body. Since the melamine resin can be peeled off, the melamine resin can be easily recycled, and a particularly excellent separation method can be provided. Further, the present invention is extremely useful when applied to a top plate such as a desk where a melamine resin decorative plate is often used due to advantages such as surface hardness.

Furthermore, if copper balls or copper alloy balls are used as the polishing material, the size of the decorative member peeled off from the furniture body can be made suitable for recycling due to the appropriate softness of the material. In addition, the regeneration efficiency of the furniture body can be improved. In addition, if the crushed decorative member is sieved according to size, loss during material regeneration can be suppressed as much as possible.

When dust-containing air generated during the separation process is filtered by a filter, the air can be separated into dust and clean air, so that there is no need to worry about air pollution. . Furthermore, if the projection speed and size of the abrasive material or the processing time can be adjusted, depending on the material of the members constituting the furniture to be applied, etc.
It is possible to perform an appropriate sorting process efficiently.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram schematically showing an embodiment of the present invention.

FIG. 2 is a diagram showing conditions and the like of a main test and a comparative test in a separation test performed in the same example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Steel furniture (top plate) 2 ... Processing space (processing room) 11 ... Furniture main body (top plate main body) 12 ... Makeup member (melamine resin decorative board) 12c ... Dust 32 ... Cleaning material (copper ball) 41 ... Sieve (Rotating sieve)

Claims (7)

[Claims] 1. A separation method applied to a steel furniture comprising a steel furniture main body and a decorative member attached so as not to fall off to the furniture main body, the steel furniture being provided in a predetermined processing space. A method of separating steel furniture, comprising: separating a furniture member from a furniture member by causing a polishing member to collide with the material and peeling the decorative member from the furniture body by the impact. 2. The decorative member is a melamine resin decorative plate,
2. The method for separating steel furniture according to claim 1, wherein the decorative board is attached to a furniture main body with an adhesive. 3. The method for separating steel furniture according to claim 2, wherein the furniture body is a top plate body constituting a top plate such as a desk or a table. 4. The method according to claim 2, wherein the abrasive is a copper ball or a copper alloy ball. 5. The method for separating steel furniture according to claim 1, wherein the decorative member peeled off in the processing space can be collected by size through a sieve. 6. A filter according to claim 1, wherein at least dust-containing air generated in the processing space is classified into dust and clean air by a filter.
Separation method of the described steel furniture. 7. The method according to claim 1, wherein the blasting speed of the blasting material, the size of the blasting material, or the processing time can be adjusted. How to sort steel furniture.