JPH0655363B2 - Assembly equipment for wood-based molding materials - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for assembling a wood-based molding material used when manufacturing a wood-based molding, and more specifically to a wood fiber containing a binder and the like. The present invention relates to an assembling device for assembling a wood-based molding material into a predetermined shape.

(Prior Art) A so-called hard board is well known as a wood-based molded article, and is widely used for interior materials of automobiles, cabinets of electric products, and the like. However, this hardboard
A step of once forming a molding mat by adding a binder or the like to the wood fiber obtained by defibrating the wood chips, and then appropriately cutting this molding mat by heat compression molding is adopted. However, there is a problem in that it is inevitable that the process is complicated and the yield is lowered, and that the moldability is inferior to the production of a molded product having a deep-drawn portion.

Therefore, a method has been proposed in which the above-mentioned wood-based molding material is assembled into a predetermined shape to form a material assembly, and the material assembly is directly supplied to a molding die to perform heat compression molding.
No. 03, JP-A-62-134215 and the like.

In this manufacturing method, as shown in the schematic process of FIG. 3, first, a wood-based molding material M is supplied to a collecting device 1, which is sprayed from an upper spreader 2 into a diffuser 3 and then a lower spreader. The material assembly W having a predetermined shape is formed by depositing the material on the perforated plate 5 in the stacker 4 to a predetermined height. A guide tube such as a traverser is provided in the diffuser 3 (not shown), and the molding material M is diffused in a wide range by swinging the traverser. Further, the deposition height of the material aggregate M is monitored by a sensor (not shown), and when the height reaches a certain level, the spraying of the molding material from the sprayer 2 is stopped. The stacker 4 and the diffuser 3 are detachable, and then the stacker 4 is separated from the diffuser 3 and the holder 6 is attached.
The material aggregate W is transferred to. The cage 6 has a porous plate 7 similar to the above-mentioned inside, and the inside thereof can be evacuated by an exhausting means (not shown). The material assembly W has a porous plate 7 of the cage 6. Sucked on top.
After that, the holder 6 moves to the forming device 8, the suction is released, and the material aggregate W is put into the mold. The molding die constituting the molding device 8 is composed of a lower die 9, an upper die 10 and a holding frame 11, and is heated to a predetermined temperature in advance. The raw material aggregate W put into the mold is compressed by the lowering of the upper mold 10, whereby the compact P is obtained. According to such a manufacturing method, since matting is not required, the problems caused by the use of the mat can be largely solved, and the wood-based molded product P having a low cost and excellent quality can be obtained.

By the way, according to the above new manufacturing method, when the material assembly W is manufactured by using the assembly apparatus 1, the bulk density of the material assembly W changes due to variations in the water content of the raw material chips, the defibration conditions, and the like. As a result, the weight of the raw material aggregate W varies, which hinders the subsequent compression moldability. That is, if the weight is too heavy, there is a possibility that surface swelling may occur due to an increase in generated gas or a decrease in air permeability of the material, and if too light, the strength may be insufficient due to a decrease in density. In order to solve this problem, the inventors of the present invention adjust the weight by forming the material aggregate W by the assembling apparatus 1 and holding it in the laminating machine 4 while shaving (deleting) the upper surface thereof. After that, a manufacturing method for transferring to the cage 6 was established, which was already disclosed in Japanese Patent Application No. 61-184774.

FIG. 4 shows the details of the shaving process together with the collecting device 1. In the figure, reference numeral 12 is a carrying table for carrying the stacker 4, and a conveyor (not shown) is incorporated therein. This transport table
Under 12, on the side where the collecting device 1 is installed,
An exhaust pipe 13 for exhausting the inside of the stacker 4 is provided. One end of the exhaust pipe 13 is connected to a suction fan (not shown), and the diffusion fan 3 and the stacker 4 are operated by the operation of the suction fan.
A downward air flow is formed inside the porous plate 5, and the molding material M floats and descends along with the air flow and is sequentially deposited on the porous plate 5. A shutter 15 that can be opened and closed by a cylinder 14 is provided on one side of the spreader 3, and a molding material M on the porous plate 5 is formed.
The shutter 15 is opened at the stage when the accumulation of the material is completed, and the material assembly W is conveyed to the shaving process together with the stacker 4.

On the other hand, in the shaving step, the first shaving roller 16 is disposed adjacent to the collecting device 1, and the first shaving roller 16 is disposed at a predetermined distance from the first shaving roller 16 in the transport direction of the stacker 4. Two shaving rollers 17 are provided. The first and second shaving rollers (hereinafter, simply referred to as rollers) 16 and 17 have a length larger than the width of the stacker 4 and are entirely covered with covers 18 and 18. Each cover 18 is connected to a main duct 20 via a sub duct 19.19, and the main duct 20 is connected to an exhaust means (not shown). Further, the first roller 16 has its position fixed, and the upper surface of the material assembly on the stacker 4 can be removed smoothly, while the second roller 17 has its position moved vertically. As a result, the upper surface of the material aggregate W can be removed to an arbitrary depth. That is, while the material aggregate W moves on the transport table 12 together with the stacker 4,
The upper surface of the first roller 16 is subjected to the first shaving, and then the second roller 17 is subjected to the second shaving. In addition, these rollers 16,1
The molding material deleted in 7 is returned to the original via the sub-duct 19 and the main duct 20.

In the shaving process, the weighing device 21 is arranged below the transport table 12 and in a portion located between the first and second rollers 16 and 17. The weighing device 21 is provided with a weight sensor 24 on a table 23 that can be moved up and down by a cylinder 22, and when the cylinder 22 is operated, the table 23 is moved.
The weight of the weight sensor 24 by raising the
By mounting the lower frame 4a of the above, the total weight of the laminated container 4 including the material aggregate W can be measured. Then, the deletion amount (deletion height) of the second shaving is determined based on the weighing result by the weighing device 21, and the second roller 17 moves to a height where the deletion amount can be obtained and the shaving is performed. By doing this, the weight of the material aggregate W is kept constant.

(Problems to be Solved by the Invention) However, according to the countermeasure including the above shaving step, the weight adjustment range by the second roller 17 is set to the material aggregate because the surface is retained while being held in the laminating machine 4. The protrusion width of W from the stacker 4 is limited to the inside of H (FIG. 4). However, as described above, changes in the bulk density of the raw material aggregate cannot be avoided due to variations in the water content of the raw material chips and the defibration conditions, and when viewed in the long term such as summer and winter, the bulk density becomes too large or too small. Often happens,
In this case, when the protrusion margin H of the material assembly W exceeds the weight adjustment range and the bulk density is small, the weight is already insufficient due to shaving by the first roller 16, and when the bulk density is large, the second roller is second roller. Since the deletion level by 17 is located in the stacker 4, the weight cannot be adjusted. Of course, by setting the deletion level by the first roller 16 at a position far away from the upper end of the stacker 4, the above-mentioned adverse effect can be avoided.
Since the upper portion of the material aggregate W is not constrained from the surroundings, there is a risk that the shape may be deformed during shaving or transportation, and it is essentially necessary to abandon the countermeasure.

The present invention has been made in view of the above conventional problems,
An object of the present invention is to provide a wood-based molding material collecting apparatus that enables smooth weight adjustment by shaving, regardless of changes in the bulk density of the material assembly.

(Means for Solving the Problems) A structure of the present invention for solving the above problems will be described with reference to FIGS. 1 and 2 which are embodiment drawings, and the present invention forms a collecting device 1. The stacking means 30 and the body case 31
Supporting means having a porous plate 32 for holding the molding material therein, the porous plate being disposed in the main body case.
It is characterized in that it supports the height adjustment at 33 to 38.

(Operation) In the apparatus for assembling the wood-based molding material having the above-mentioned configuration, by adjusting the supporting means, for example, when the bulk density becomes excessive, the position of the perforated plate is raised, while the bulk density becomes too small. In this case, the position of the perforated plate can be lowered, and the margin of protrusion of the material assembly from the main body case can be kept within the allowable range for weight adjustment later.

(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing. In the following drawings, the same parts as those shown in FIGS. 3 and 4 are designated by the same reference numerals, and the description thereof will be omitted.

In FIGS. 1 and 2, reference numeral 30 denotes a stacker that constitutes the collecting apparatus 1, and has a perforated plate 32 for receiving the molding material M (FIG. 4) in a main body case 31. The perforated plate 32 includes a plurality of support rods 34, 3 extending from a movable frame 33.
It is supported by 4 and maintains its shape. The movable frame 33 is supported by a fixed frame 35 bridged in the main body case 31 via adjustment rods 36, 36. Each adjusting rod 36 is composed of a long screw rod, is fitted and inserted into a hole 37a of a holder 37 integrally provided on the fixed frame 35, and an adjusting nut 38 screwed into this is seated on the end surface of the holder 37. It is held by the holder 37. The upper end of the adjusting rod 36 is fixed to the movable frame 33,
By turning the adjusting nut 38, the adjusting rod 36 is screwed back and forth in the vertical direction, and following this, the mounting height of the movable frame 33 is adjusted. Further adjusting rod
A lock nut 37 is attached to 36, and the position of the adjusting rod 36 is fixed by tightening the lock nut 37.

In addition, in the stacker 30, the support rod 34 is also attached to the movable frame 33 in such a manner that the length thereof can be adjusted, so that the uneven shape of the perforated plate 32 can be arbitrarily accommodated. In addition, the perforated plate 32 is tilted and supported in the laminating device 30. This is to prevent the deep drawing portion from being abrupt in the pressing direction during the heat compression molding by the molding device 8 (FIG. 3). This is due to consideration.

With such a configuration, the height of the movable frame 33, that is, the perforated plate
Adjust the height H _{0 of} 32 (Fig. 1) beforehand,
Is carried into the collecting apparatus 1 shown in FIG. 4, and the forming material M is deposited on the perforated plate 32 to form a material assembly W having a predetermined shape. Next, the stacker 30 containing the material aggregate W is conveyed to the shaving step shown in FIG. 4, and the first shaving is performed by the first roller 16 so that the upper surface of the material aggregate W is removed. After erasing smoothly, and after weighing with the weighing device 21, the second shaving with the second roller 17 is performed.

The height H ₀ of the porous plate 32 is adjusted according to the bulk density of the material aggregate W. That is, at a time when the bulk density of the raw material aggregate W is excessive due to a large water content, the height H _{0 is set} to a large value, and conversely, when the bulk content is low and the bulk density is excessively low. Decreases the height H ₀ ,
Adjust it. Thereby, the protrusion margin H of the material aggregate W
There is no excess or deficiency in the roller, and the rollers 16 and 17 (4th
It will be possible to reliably perform weight adjustment according to the figure.

Moreover, in the above embodiment, since the support rod 34 is also attached to the movable frame 33 so that the length thereof can be adjusted, it is possible to adjust the shape of the bottom surface of the material assembly W by only changing the porous plate 32. The scope of application will be expanded.

In the above embodiment, the screw adjusting mechanism such as the adjusting rod 36 and the adjusting nut 38 is used as the means for supporting the perforated plate 32 in a height adjustable manner, but the mechanism is not limited and, for example, the adjusting rod is used. Forming horizontal holes at a predetermined pitch,
A stopper pin may be inserted into this lateral hole so that the position can be adjusted.

Further, although the perforated plate 32 is tilted and supported in the above-described embodiment, this embodiment is optional and may of course be supported horizontally.

(Effects of the Invention) As described in detail above, according to the collecting apparatus for a wood-based molding material according to the present invention, the perforated plates constituting the stacker are supported in the main body case in a height-adjustable manner. Therefore, there is an effect that the projection amount of the material aggregate from the main body case can be kept within the allowable range of the later weight adjustment regardless of the change of the bulk density. Further, since the height of the perforated plate can be mechanically adjusted without using a special driving means, the structure is simplified and the height of the perforated plate can be adjusted in a short time.
The manufacturing cost is also low.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the structure of a laminating machine which is a part of an assembling apparatus for wood-based molding materials according to the present invention, and FIG. And FIG. 3 is a schematic view showing a manufacturing process of a wood-based molded body to which the present collecting apparatus is applied, FIG.
The figure is a schematic view showing a shaving process added to the manufacturing process together with a collecting device. DESCRIPTION OF SYMBOLS 1 ... Collecting device, 2 ... Spreader 3, ... Diffuser, 16,17 ... Shaving roller 21 ... Weighing device, 30 ... Laminater 31 ... Main body case, 32 ... Perforated plate 33 ... Movable frame, 34 ... Support rod 35 ... Fixed Frame, 36 ... Adjusting rod 38 ... Adjusting nut, W ... Material assembly

Claims (1)

[Claims] 1. A collecting device for collecting a wood-based molding material, in which a binding agent or the like is added to wood fibers, into a predetermined shape, which comprises a spraying means for spraying the molding material and a molding material sprayed from the spraying means. It comprises a diffusing means for diffusing and a laminating means for accumulating a molding material falling through the diffusing means, the laminating means comprises a perforated plate for holding the molding material in a main body case, and the perforated plate is the main body case. A collecting device for a wood-based molding material, characterized in that it is supported by a supporting means disposed inside so that its height can be adjusted.