JPH0720611B2 - 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
The step of forming a molding mat once by adding a binder or the like to the wood fiber obtained from the wood chips, and then appropriately cutting this molding mat by heat compression molding is adopted. However, there has been a problem that the complexity of the process and the reduction of the yield cannot be avoided, and the moldability is inferior, which is not suitable for 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 be thermocompression-molded.
No. 203, JP-A No. 62-134215, and the like.

In this manufacturing method, as shown in the schematic steps in FIG. 5, first, the wood-based molding material M is supplied to the collecting device 1, and the wood-based molding material M is sprayed from the upper spreader 2 into the diffuser 3 and further down. 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. At this time, the inside of the stacker 4 is exhausted by an exhaust means (not shown) to promote the deposition of the molding material M. The laminator 4 and the diffuser 3 are detachable, and then the laminator 4 is separated from the diffuser 3 and conveyed to a shaving step (not shown), and the upper surface of the material aggregate W is removed to make it uniform. After the weight is set, the material assembly W is further transferred to the transfer step and the material assembly W is transferred to the holder 6. The cage 6 has a porous plate 7 similar to the one described above inside, and the inside thereof is evacuated by an exhaust means (not shown).
Are suction-held on the perforated plate 7 of the holder 6. 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 unnecessary,
It is possible to solve most of the problems caused by the use of the mat, and to obtain a wood-based molded product P that is low in cost and excellent in quality.

(Problems to be solved by the invention) By the way, according to the above-described new manufacturing method, when the material assembly W is manufactured by using the collecting apparatus 1, if the loosening of the forming material M is incomplete, a block forming is performed. The material is the same as the laminating machine 4
The weight of the obtained raw material aggregate W accumulated inside is locally varied, and the subsequent heat compression moldability is hindered.

The present invention has been made in view of the above background, and provides a wood-based molding material collecting apparatus that enables a sufficient loosening of a molding material and thus can obtain a uniform material assembly without uneven weight. With the goal.

(Means for Solving the Problems) The structure of the present invention for solving the above problems will be described with reference to FIG. 1 which is an embodiment drawing, and the present invention provides a spreader 20 forming a collecting device 1. And a disentanglement section 31 for disentangling the forming material that vertically drops from the transfer section, wherein the disentanglement section has at least one pair of disentanglement having a blade portion on the outer circumference. Means 34, 35 are provided by wrapping each blade portion to each other, and air spraying means 38, 39 for discharging air are provided in the lower region of the pair of disentanglement means, and further the air spraying means is arranged in the discharge direction. It is characterized in that a plurality of different air nozzles 38 and an air amount adjusting means 40 for adjusting the amount of air discharged from each air nozzle are provided.

(Operation) In the collecting apparatus for a wood-based molding material having the above-described configuration, the molding material vertically falling from the conveying section first enters between the pair of disentanglement means to be mechanically loosened, and then further blown by air. Finely loosened.

(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 FIG. 1, reference numeral 20 denotes a spreader that constitutes the collecting device 1, and includes a transport unit 21 that continuously transports the molding material M to above the diffuser 3, a drop port 22 provided in the transport unit 21, and It comprises a disentanglement section 31 which is connected to the diffuser 3 and loosens the molding material M dropped from the drop port 22.

The carrying section 21 is provided with a first housing 24 forming a horizontal carrying path 23, and a receiving opening 25 for receiving a molding material is provided in the first housing 24. In this first housing 24, an upper conveyor 26 and a lower conveyor 27 are arranged in two stages, and a plurality of dot feeding rollers 28 are arranged between the upper and lower conveyors 26, 27. It is set up. The lower conveyor 27 is extended to the vicinity of the drop port 22, so that the molding material M taken into the first housing 24 from the receiving port 25 first drops from the upper conveyor 26 to the lower conveyor 27. After being leveled, the doffing roller 28 is conveyed, and after the doffing roller 28 loosens a large lump, it is further conveyed to the drop port 22. A beater roller 29, which is driven to rotate by a motor 30, is disposed immediately above the drop port 22. The molding material M conveyed by the lower conveyor 25 is further loosened by the beater roller 29, and the drop port 22 is provided. To the disentanglement part 31.

On the other hand, the disentanglement part 31 is provided with a second housing 33 that forms a vertical drop path 32 through which the molding material M is vertically dropped. In the second housing 33, a fluffer roller (disentanglement means) located immediately below the drop port 22 and described later
34 and 35 are arranged in a pair on the left and right. The fluffer rollers 34, 35 are rotationally driven in opposite directions by motors 36, 37 installed outside the housing, and the molding material M is wound around the fluffer rollers 34, 35 and finely divided. Be loosened. The pair of fluffer rollers 34, 3
The axis of the beater roller 29 is horizontally offset from the center of 5 by S so that the molding material M can be efficiently dropped onto the fluffer rollers 34, 35.

Also within the second housing 33 is the fluffer roller.
A plurality of air nozzles 38 that open at positions below 34 and 35 are attached. Air is supplied to each air nozzle 38 from an air source (not shown) through an air pipe 39, and the air discharged from each air nozzle 38 loosens the molding material further finely. The air piping
A damper (air amount adjusting means) 40 is interposed in 39,
By adjusting the amount of air discharged by the damper 40, the loosening condition and the falling direction of the molding material M can be regulated.

Here are the details of the fluffer rollers 34 and 35.
This is as shown in FIGS. 2 to 4. In these figures, 41 is a disk-shaped blade body having a radial blade portion 42,
Many are assembled on the rotary shaft 44 via the collar 43.
The respective blade bodies 41 are arranged so that the blade bodies of the fluffer rollers on the other side can be inserted with a predetermined clearance c between them.
The spacing is adjusted (Fig. 3). Each blade body 41 also has blade portions of adjacent blade bodies between the blade portions 42 of one blade body when viewed in the axial direction of the rotary shaft 44 (here, for convenience of description, the blade body and the blade portion are separated from each other). The phases in the direction of rotation are adjusted between adjacent ones so that the (reference numerals 41 ', 42', respectively) can be positioned. (Fig. 4). That is, in the present embodiment, as shown in FIG. 4, the phase in the rotation direction of the adjacent blade body 41 is ½ of the blade angle θ (θ / 2) with respect to one blade body 41. Instead, the blade portions 42 'of the adjacent blade bodies 41' can be seen just in the middle of the blade portions 42 of one blade body 41. In order to change the phase in the rotational direction in this way, the key groove 45 provided in each blade main body 41 may be offset in the rotational direction by θ / 2 in advance, and it can be assembled to the rotary shaft 44 with the common key 46. , The phase of the rotation direction is automatically changed.

On the other hand, each fluffer roller 34, 35 adjusts the axial phase of the blade body 41 so that the blade body of the other party fluffer roller can be inserted between the blade portions 42 of its own blade body 41. There is. In addition, each fluffer roller 34, 35 has its own blade body 41.
The pitch of the rotary shafts 44 is adjusted so that the rotary shaft 44 can be inserted into the collar 43 of the fluffer roller on the opposite side with a slight gap s (FIG. 3) to a facing depth. That is, the fluffer rollers 34, 35 wrap the respective blade bodies 41 with each other to form a predetermined gap. The blade body 41
Is a flank 42a having a predetermined clearance angle α at the tip of the blade 42.
Are provided over a slight width B (FIG. 4). Further, the blade body 41 has a plate thickness Ta, Tb between the fluffer rollers 34, 35.
Are the same (Fig. 3). Further, the rotations of the motors 36 and 37 are transmitted to the rotary shafts 44 via pulleys 47 and belts 48. The pulleys 47 have different diameters between the fluffer rollers 34 and 35. And the rotation speed of the pair of fluffer rollers 34, 35 is mutually changed (second
Figure).

With such a configuration, the molding material M fed into the first housing 24 from the receiving port 25 at the upper portion of the transport unit 21 is transferred to the upper conveyor.
From 26 to the lower conveyor 27, dot-fing roller
A large lump is unraveled by 28 and continuously conveyed to the dropping port 22, where it is further unraveled by the beater roller 29, and falls from the dropping port 22 into the second housing 33 of the disentanglement portion 31. The molding material M that has fallen into the second housing 33 first drops onto the pair of fluffer rollers 34 and 35, enters the gap of the blade main body 41 that rotates in a state of being wrapped with each other, and while passing therethrough. It is loosened finely by the blade portion 42.
Molding material M loosened by fluffer rollers 34, 35
The air is further loosened by the air discharged from the air nozzle 38, and falls into the diffuser 3 along with the flow of the air. In the diffuser 3, for example, a flat plate-shaped traverser 3a is swingably provided (FIG. 1), and the molding material M is diffused widely and efficiently by the swing of the traverser 3a and the air flow. Then, they are deposited on the perforated plate 5 in the laminating device 4 (FIG. 5), whereby a material assembly W having a predetermined shape is manufactured.

Although a pair of fluffer rollers 34, 35 are provided in the disentanglement portion 31 in the above-described embodiment, the number of the fluffer rollers 34, 35 is not limited in the present invention, and two or more pairs may be provided. Further, the fluffer rollers 34, 35 in the above-described embodiment are provided with the blade portion 41.
Any shape can be used as long as it has

(Effects of the Invention) As described above in detail, according to the collecting apparatus for a wood-based molding material according to the present invention, the rotation and discharge directions of the pair of disentanglement means are different from each other. Since the molding material is unraveled in two stages by air blowing, the molding material can be extremely finely unraveled, and there is an effect that a homogeneous material aggregate having no weight imbalance can be manufactured. Moreover, since the air blowing compensates for the lack of loosening by the disentanglement means, the number of disentanglement means can be reduced as much as possible, and a device having a simple structure and a small size can be provided. Furthermore, since the amount of air discharged can be adjusted by the air amount supply means to promote the diffusion of the forming material, it is also effective in improving the productivity of the material aggregate.

[Brief description of drawings]

FIG. 1 is a schematic view showing the structure of a spreader which is a part of a collecting device for a wood-based molding material according to the present invention, and FIG. 2 is a sectional view showing a part of the same in an enlarged manner. FIG. 4 is a side view showing details of the fluffer roller used in the present invention, FIG. 4 is a front view of the fluffer roller, and FIG. 5 is a schematic view showing a manufacturing process of a wood-based molded body to which the present collecting apparatus is applied. Is. 1 ... Aggregation device, 20 ... Spreader 3 ... Diffuser, 21 ... Conveyor 22 ... Drop port, 31 ... Disentangling part 34,35 ... Fluffer roller (disentrative means) 38 ... Air nozzle, 39 …… Air piping 41 …… Blade body, 42 …… Blade section 43 …… Color, 44 …… Rotating axis M …… Molding material, W …… Material assembly

Claims (1)

[Claims] 1. A device for gathering a wood-based molding material in which a binding agent or the like is added to wood fibers into a predetermined shape, and a spreader for spreading the molding material, and a molding material dispersed from the spreader. And a stacker for depositing the molding material diffused by the diffuser, and the disperser is a solution for loosening the transport unit for continuously transporting the molding material and the molding material vertically falling from the transport unit. And the disentanglement portion,
At least a pair of disentanglement means having blade portions on the outer periphery are provided by wrapping the blade portions with each other, and air blowing means for discharging air is provided in the lower region of the pair of disentanglement means, and further the air blowing means. Is a collecting device for a wood-based molding material, comprising a plurality of air nozzles having different discharge directions, and an air amount adjusting means for adjusting the amount of air discharged from each air nozzle.