JP3947927B2 - Method for leveling molding materials - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
Although this invention is not necessarily limited to waste, pretreatment of a molding material that is easily entangled when waste is mainly used as a molding material regardless of industrial waste and general waste such as paper and lint. About.
In particular, by forming waste fragments to be used as molding materials, waste fragments (hereinafter referred to as “molding” unless otherwise specified) prior to forming a molded product (reuse product, for example, a packaging buffer board). The present invention relates to a method and an apparatus for leveling a raw material) to a certain height.
[0002]
[Prior art]
The invention described in Patent Document 1 is known as this type of method and apparatus.
This example relates to a particle board manufacturing apparatus, which is a method and apparatus for manufacturing a particle board by leveling a pulverized needle-like (flaked) woody material to a certain thickness and thermoforming it.
In this example, prior to thermoforming, a needle-like (flake-like) woody material is sprayed on a resin sheet laid on the main conveyor 50 via a spreading belt 502 that is swung in the width direction. A control device is adopted in which the spread wood material is leveled by the smoothing brush 503.
Then, three sets of leveling brushes 503 were provided together with the spreading belt 502 (see Patent Document 1 and FIG. 4).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-96516
[Problems to be solved by the invention]
The wood material leveling device for particle board manufacturing described in Patent Document 1 is coarse and dense, but is pulverized grain size wood material (1.73 mm for face material and about 2.03 mm for core material) Is distributed on the main conveyor 50 via the swinging distribution belt 502, and the wood grain material dispersed on the main conveyor 50 is leveled by the smoothing brush 503. Met.
[0005]
Although the wood material used as a forming material by this leveling device is dense and coated with an adhesive, the grain size wood material is about 1.77 mm or 2.03 mm as described above. In addition, since the material is non-soft, the dispersion belt 502 is swung before leveling, and then leveled by the leveling brush 503 so that the grain size wooden material is thick without considering entanglement. Can be expected to be even.
[0006]
On the other hand, for example, the waste paper cut by a shredder is used as a molding material in the present invention, as is known, is a thin and long flexible tape-like paper, and a short one is about 2 mm wide × 2 mm long. The long ones are about 10 mm wide x 300 mm long cut into noodles, but generally vary from type and function of the shredder machine, but generally about 4 mm wide x 30 mm long It is targeted.
[0007]
Therefore, since such a tape-shaped material is used as a forming raw material and an adhesive is usually applied before forming, the leveling device for particle board production described in Patent Document 1 is easily entangled with each other. In particular, even if the spreading belt 502 is swung, the material is swung and the entanglement cannot be resolved.
Further, even when the forming raw material of fiber waste such as slender lint is leveled, the spreading belt 502 described in Patent Document 1 may be swung due to the property of being easily entangled similarly to the waste paper cut by the shredder. The lint entanglement could not be resolved.
[0008]
An object of the present invention is to solve the above-mentioned problems, and is intended to loosen the entanglement and heat it to a certain height prior to heat forming the forming raw material by cutting pieces such as paper and lint. is there.
Another object is to make the mass easy to level and collapse when the forming raw material is supplied as a mass with unevenness.
Furthermore, another object is to prepare for a change in the thickness of the molded product by adjusting the height of the molding material.
Another purpose is to return the excess molding material to the previous process side when loosening the molding material and leveling it to a certain height, while ensuring that the amount and thickness of the molding material required for the molded product is not insufficient. There is to do.
Another object is to further ensure the leveling of the forming raw material.
Furthermore, another object is to prevent a load from being applied so that the coated sheet on the conveyor is not damaged when the raw material is transported when the forming raw material is leveled.
[0009]
[Means and effects for trying to solve the problems]
The invention of the molding material leveling method according to claim 1
Prior to leveling the molding raw material to a certain height, the molding raw material is lifted to lift the entanglement of the molding raw material, then dropped and run in a method to level the loosened molding raw material to a certain height. By supplying the forming raw material on the covering sheet that is laid on the inner conveyor and is driven following the running of the conveyor, and by positively opening both sides of the strip-shaped forming raw material supplied on the covering sheet The method is characterized in that it is carried out by actively removing a part of the forming raw material from both sides of the covering sheet .
[0010]
Since the invention according to claim 1 is configured as described above, a part of the forming raw material falls off by positively opening both sides of the covering sheet. It is possible to prevent so-called paper dust generated from a part or the raw material from entering below the covering sheet.
In the present invention, a thin flexible paper or the like is generally used for the covering sheet, so that the covering sheet is likely to be damaged. Since there is no load, there is an advantage that breakage of the covering sheet can be prevented.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention of the molding material leveling apparatus according to the embodiment of the present invention will be described together with the invention of the method with reference to the drawings.
1 is a side view of a forming raw material leveling apparatus, FIG. 2 is a perspective view showing another example of the interference means, FIG. 3 is a side view of the main part of another example of the forming raw material leveling means, and FIG. FIG. 7 is a side view of a main part of still another example of the forming material leveling means.
[0012]
The leveling device 10 according to the embodiment of the present invention performs pretreatment in preparation for heat forming of a forming raw material, for example, a waste paper 12 cut by a shredder (hereinafter simply referred to as a forming raw material 12 unless otherwise specified). The pretreatment is to level the forming raw material 12 to a certain thickness.
As is known, the cut waste paper that is the forming raw material 12 is finely cut for the purpose of maintaining confidentiality, but the size depends on the performance of the shredder machine, but generally 4 mm wide × long It is often discarded as a tape of about 30 mm.
However, in order to avoid the burden of recycling costs, it is desired that the discarded cut waste paper can be recycled without being subjected to secondary processing (for example, pulverization).
However, it was found that there were some problems when trying to use it as it was.
[0013]
For example, when the cut waste paper is used as the forming raw material 12 and a pressing board having a certain thickness is formed, it is necessary to preliminarily level the cut waste paper that is the forming raw material 12 to a predetermined height prior to the forming step. However, the cut waste paper is different from the pulverized particle size, and it is thin and tape-like, and since the adhesive is applied for the purpose of stability of the molded product, it is easy to get entangled and fixed. Difficult to level.
In view of the physical properties of the cut paper, the present inventor has solved the problem by the following mechanical treatment.
[0014]
The basic structure of the apparatus 10 is that a hopper 16, a main leveling means 18, an auxiliary leveling means 20, a molding raw material leveling means 22 a and a molding press are formed on the conveyor 14 from the upstream side toward the downstream molding press 24. 24 are sequentially provided.
The conveyor 14 is not necessarily limited to running intermittently, but in this embodiment, a movable conveyor 14 that is intermittently driven corresponding to the time lag associated with molding is provided and leveled to a certain height. The molding raw material 12 can be conveyed to the molding press 24 side which is the next process.
[0015]
On the conveyor 14, a hopper 16 having an open bottom for guiding the forming raw material 12 to which an adhesive has been applied in advance is provided upstream of the conveyor 14.
Such as mesh-like body 18a by the main leveling with a rotating shaft 18b by a small mesh as compared to the size of the forming material 12 as shown beside the hopper 16 to the rotatable plate body and rake-like body or 2 A means 18 is provided in the width direction of the conveyor 14 while maintaining a certain height from the conveyor 14.
[0016]
The main leveling means 18 scatters the forming raw material 12 by scatters the forming raw material 12 supplied in the width direction onto the conveyor 14 via the hopper 16 to the upstream side. It serves to loosen up or break the lump of the molding material 12 with relatively severe irregularities.
[0017]
Further, the main leveling means 18 rotates the conveyor 14 in the right direction in the drawing, that is, in the clockwise direction, so that the running of the conveyor 14 and the rotation of the main leveling means 18 are combined to form a molded product. Therefore, the excessive forming raw material 12 can be returned to the previous process side (see FIG. 1, the cross-sectional substantially chevron shape on the drawing is formed on the previous process side of the main leveling means 18, the auxiliary leveling means 20 and the leveling means 22a. The excess molding raw material 12 is returned.) At the same time, the raw material 12 is controlled by the running of the conveyor 14 and the rotation of the main leveling means 18, so that the molding raw material required for the molded product W is obtained. The amount of 12 can be conveyed toward the auxiliary leveling means 20 which is the next step without causing a shortage.
[0018]
Since the forming raw material 12 is generally coated with an adhesive before being heat-molded, it is more easily entangled.
Therefore, it is necessary to loosen the entanglement or break the shape of the unevenness before leveling.
Therefore, by forcibly bringing the main leveling means 18 that rotates as described above into contact with and engaging with the forming raw material 12, the irregularities of the forming raw material 12 are broken, and the entangled forming raw material 12 is transferred to the conveyor 14. It moves up to the upstream side and acts to loosen the entanglement.
Then, the loosened forming raw material 12 is conveyed to the auxiliary leveling means 20 using a rotating brush, which will be described later, through the running of the conveyor 14 and preliminarily leveled.
[0019]
Preferably at regular intervals from the main smoothing means 18 downstream thereof a on the conveyor 14, desired that leveling aid due rotatable rotary brush means 20 is provided in the width direction of the conveyor 14 Is done.
The auxiliary leveling means 20 preliminarily levels the molding raw material 12 that has been loosened by the main leveling means 18 in the previous process or whose irregularities have been collapsed to a certain height. When the thickness of the forming raw material 12 is required to be high, the thickness of the forming raw material 12 is inevitably required to be thick. It is better to level.
[0020]
Here, pre-leveling means leveling prior to normal leveling by means of leveling means 22a, 22b, 22c having a vertical control mechanism for forming raw material, which will be described later, and auxiliary leveling means. 20 is employed as necessary, for example, when the thickness of the forming raw material 12 is high, and may be omitted.
[0021]
This auxiliary smoothing means 20 was explained that in which level the forming material 12 which is conveyed to the auxiliary smoothing means 20 under the control of said main smoothing means 18 preliminarily as mentioned above, the ShuHitoshi Usually, the amount of the molding material 12 conveyed from the side of the molding means 18 is excessive for the molded product W.
Accordingly, details such as the controlled rotation direction and the function of returning the excess amount to the upstream side of the conveyor 14 are omitted, but they are common to the main leveling means 18 described above.
[0022]
For the purpose of preparing the molding material 12 preliminarily leveled to a certain thickness by the auxiliary leveling means 20 in preparation for heat molding and leveling to a normal height, the auxiliary leveling unit 20 is provided on the conveyor 14 and downstream thereof. The forming material leveling means 22 a, 22 b, and 22 c are provided in the width direction of the conveyor 14 at a certain distance from the control means 20.
[0023]
The molding material leveling means 22a, 22b, and 22c will be described in more detail. The reference numeral “22a” in FIG. 1 is a rotatable rotary brush.
A reference numeral “22b” in FIG. 3 is a plate-like regulating member that is fixedly suspended on the conveyor 14 at a constant interval.
The reference numeral “22c” in FIG. 4 is a plate-like regulating member provided on the conveyor 14 so as to be swingable at a constant interval.
[0024]
The rocking range of the regulating member 22c of the forming material leveling means is preferably swung only within the range of the previous process side so as not to convey the excessive forming material 12 to the next process side.
In other words, as shown by the solid line and the chain line in the figure, it is appropriately regulated not to swing toward the next process side.
[0025]
The heights of the leveling means 22a, 22b, and 22c are set to be equal to the height α of the forming raw material 12 carried into the forming press 24.
[0026]
Further, the height of the main leveling means 18 and the auxiliary leveling means 20 regulates the amount of the molding material 12 supplied onto the conveyor 14 and affects the height of the molded product W. It is preferable to provide a control mechanism in the leveling means 22a, 22b, 22c.
[0027]
The covering sheets 26 are supplied to the upper and lower sides of the forming raw material 12 conveyed in the form of a strip. The raw material 12 of the molded product W is considered to be a waste paper cut by a shredder, and scattering is prevented.
[0028]
The present invention has mainly cited the adoption of waste as a molding material regardless of industrial waste and general waste such as paper and lint, but it is not intended to limit these molding materials exclusively, but non-waste Is also planned to be used as a molding material.
[0029]
In the embodiment of the present invention, the forming raw material 12 is supplied on the covering sheet 26 laid on the traveling conveyor 14 and traveled following the traveling of the conveyor 14, and the raw material 12 is supplied on the covering sheet 26. Leveling is performed in the supplied state.
In this case, both side portions of the strip-shaped raw material 12 supplied on the covering sheet 26 (the direction perpendicular to the traveling direction of the covering sheet 26) fall off from the covering sheet 26 while the covering sheet 26 is traveling. In this invention, in order to prevent the raw material 12 from falling off, a part of the forming raw material 12 is removed from both sides of the covering sheet 26 by positively opening both sides of the covering sheet 26 without providing a regulating piece or the like. It is designed to actively drop out.
[0030]
By actively opening both sides of the covering sheet 26, a part of the forming raw material 12 falls off, but a part of the raw material 12 and so-called paper dust generated from the raw material 12 are covered during the leveling operation of the raw material 12. It is possible to prevent the sheet 26 from entering below.
In the invention according to this embodiment, a thin flexible paper or the like is generally used for the covering sheet 26, and the covering sheet 26 is easily damaged.
However, since the raw material 12 and the like do not enter below the covering sheet 26 as described above, the load is not applied to the traveling covering sheet 26, so that the covering sheet 26 can be prevented from being damaged.
[0031]
For the purpose of receiving the forming raw material 12 and paper powder that fall off from both sides of the covering sheet 26, for example, illustration is omitted along the both sides of the covering sheet 26, but the inventor plans to provide a bowl-shaped receiving tool. is doing.
Furthermore, speaking, the bowl-shaped receiver has an advantage that the forming raw material 12 dropped on the receiver can be easily returned to the hopper 16 side by being inclined from the downstream side to the upstream side of the conveyor 14. .
In addition, even if the forming raw material 12 may invade on the covering sheet 26 introduced away from the conveyor 14, the load due to the running of the conveyor 14 does not act, so the present invention does not mention the invasion.
[Brief description of the drawings]
FIG. 1 is a side view of a forming raw material leveling apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing another example of the interference means in the forming raw material leveling apparatus according to the embodiment of the present invention.
FIG. 3 is a side view of a main part showing another example of leveling means in the molding material leveling apparatus according to the embodiment of the present invention;
FIG. 4 is a side view of an essential part showing still another example of leveling means in the molding material leveling apparatus according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Forming material leveling device 12 Forming material by cutting waste paper 14 Transportable conveyor 16 Hopper 18 Main leveling means 18a Net leveling means 18b Shaft leveling means rotating shaft 20 Auxiliary leveling means 22a Molding raw material leveling means 22b Molding raw material leveling means 22c Molding raw material leveling means 24 Molding press 26 Cover sheet W Molded product

Claims (1)

Prior to leveling the molding raw material to a certain height, in the method of loosening the entanglement of the molding raw material by raising the molding raw material, then dropping and leveling the loosened molding raw material to a certain height ,
Supply the forming raw material on the covering sheet that is laid on the running conveyor and travels following the traveling of the conveyor, and positively opens both sides of the strip-shaped forming raw material supplied on the covering sheet. Is a method of leveling the molding material by actively removing part of the molding material from both sides of the covering sheet.

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