JPH0645124B2 - 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 poor and it is not suitable for producing 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 steps of FIG. 6, first, a wood-based molding material M is supplied to a 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. 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. 7 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 vacuum pump (not shown), and the diffuser 3 and the stacker 4 are operated by the operation of the vacuum pump.
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 the main duct 20 via the sub-ducts 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 receives the first shaving, and the second roller 17 subsequently receives the second shaving. In addition, these rollers 1
The molding material deleted in 6, 17 is returned to the original state 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, based on the weighing result by the weighing device 21, the shaving removal amount (deletion height) for the second time is determined, and the second roller
17 moves to a height where the amount of deletion can be obtained and performs shaving, whereby 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 margin of W from the stacker 4 is limited to H (FIG. 7). 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 the bulk density becomes excessive when viewed in the long term such as summer and winter. Often occurs, and in this case, the deletion level by the second roller 17 is located inside the stacker 4, and the weight adjustment becomes impossible. Of course, the first
It is possible to avoid the above-mentioned adverse effects by setting the deletion level by the roller 16 at a position largely separated from the upper end of the stacker 4, but in this case, the upper portion of the material aggregate W is not restrained from the surroundings. Therefore, there is a risk that the shape may be deformed or spilled during shaving or transportation, and the countermeasures should be abandoned.

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) The structure of the present invention for solving the above problems will be described with reference to FIG. 1 to FIG. 3 which are embodiment drawings. The means 30 is formed from an inner case 31 having a perforated plate 33 holding a forming material and an outer case 32 slidably fitted to the inner case,
The outer case is always positioned at the rising end by the urging means 42 and the stopper device 53 which are interposed between the outer case and the inner case, and when the outer case is lowered by receiving an external force, it is interposed between the outer case and the inner case. It is characterized in that it is locked in the lowered position by the locking means 62, 67.

(Operation) In the apparatus for collecting a wood-based molding material having the above-described configuration, the height of the stacker can be made variable by slidably fitting the outer case to the inner case. Therefore, when the molding material is deposited, the outer case is positioned at the rising end, the first shaving is weighed, and then the outer case is positioned at the descending position so that the material assembly is projected from the upper end of the stacker. This makes it possible to perform the second shaving even if the bulk density becomes excessive.

(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. 6 and 7 are designated by the same reference numerals, and the description thereof will be omitted.

In FIGS. 1 to 5, reference numeral 30 denotes a stacker that constitutes the collecting apparatus 1, and includes a inner case 31 and an outer case 32 slidably fitted in the inner case 31.
Inside the inner case 31, a perforated plate 33 for receiving the molding material M descending in the diffuser 3 is arranged. The perforated plate 33 includes a plurality of adjustment rods extending from the support frame 34.
The shape is maintained by being supported by 35,35 .... The adjusting rod 35 is attached to the support frame 34 so that the height can be adjusted, and the perforated plate 33 can be changed by changing the attaching height.
It is possible to correspond to any shape. The inner case 31 also has a bottom flange 36 on the outer circumference of the bottom for mounting on the transfer table (conveyor) 12.
Inside the bottom, there is a lower frame 37 for mounting on the weighing device 21. On the other hand, the outer case 32 is integrally provided with an upper flange 38 on the outer periphery of the upper end thereof, and the diffuser 3 is brought into contact with the upper flange 38 via a seal member 39. The outer case 32 is attached to the lower end of the outer case 32 by attaching the seal member 40 to the inner case 31.
Maintain close contact with.

Then, on the lower flange 36 of the inner case 31, the spring holder 41, the stopper holder 51, and the lock holder 61.
Are installed in the circumferential direction. Spring holder 41
Is formed in a tubular shape and holds one end of the coil spring 42 therein. The other end of the coil spring 42, which extends upward, is in contact with the upper flange 38 of the outer case 32, and the outer case 32 is normally urged upward. A guide rod 43 extending from the outer case 32 is inserted into the coil spring 42 so that the posture of the coil spring 42 is maintained constant. The stopper holder 51 is also formed in a tubular shape, and the sliding member 52 is incorporated therein. One end of a stopper arm 53 is coupled to the sliding member 52, and the other end of the stopper arm 53 is an upper flange of the outer case 32.
Is tied to 38. The stopper arm 53 plays a role of restricting the rising end of the outer case 32 biased upward by the coil spring 42. At the rising end, the upper end of the outer case 32 projects from the inner case 31 by a predetermined height. It will be positioned in this state (Figs. 1 and 2).

The lock holder 61 has a lock block at its upper end.
62 is mounted so that it can move laterally. This lock block
62 has a hole 63 penetrating in the up-down direction in the rear portion thereof, and inclined surfaces 64, 65 at the top opening of the hole 63 and the tip facing the inner case 31 (FIG. 3). The lock block 62 is normally biased by a coil spring 66 interposed between the lock block 62 and the lock holder 61 so as to project toward the inner case 31 side. On the other hand, a lock arm 67 extends downward from the upper flange 38 of the outer case 32. The lock arm 67 integrally has a claw portion 68 at its lower end, and an inclined surface 69 is provided at the back of the claw portion 68. When the lock arm 67 descends together with the outer case 32, the inclined surface 69 of the claw portion 68 engages with the inclined end surface 65 of the lock block 62, and the lock block 62 resists the biasing force of the coil spring 66. The lock arm 67 is retracted once and is moved forward again due to the further lowering of the lock arm 67,
It catches on the claw portion 68 of 67 and restricts the rise of the outer case 32 (FIGS. 3 and 4).

A receiving member 71 is fixed to the upper flange 38 of the outer case 32, and a preceding presser foot 72 is provided above the transfer line of the main stacker 30 at a portion corresponding to the weighing device 21 (FIG. 7).
When the preceding presser foot 72 is moved downward after the weighing device 21 is actuated, the outer case 32, that is, the lock arm 67 descends against the biasing force of the coil spring 42, and the outer case 32 is The locked state is established (Fig. 4). Further, above the transfer line of the main stacker 30, a frame 74 having a lock release arm 73 hanging down is provided at the installation site of the retainer 6 (FIG. 6) so as to be able to move up and down. When the lock release arm 73 is moved downward in conjunction with the cage 6, the lock release arm 73 engages with the inclined surface 64 of the lock block 62,
The lock block 62 is retracted against the urging force of the coil spring 66 and inserted into the hole 63, whereby the outer case 32 is unlocked (FIG. 5). Therefore, by appropriately setting the length of the lock release arm 73, the lock arm 67 precedes the lock release arm 73 and escapes from the lock block 62 when the outer case 32 rises again, and the outer case 32 automatically returns to the original position. It comes to return to the position, that is, the rising end. The frame 74 is also provided with a preceding presser foot 72 ′ similar to the preceding presser foot 72. By bringing the preceding presser foot 72 ′ into contact with the receiving member 71, the material assembly W is attached to the cage 6. When transferring, the outer case 32 can be largely lowered, and the retainer 6 can smoothly perform the transferring work without interfering with the upper flange 38 of the outer case 32 (FIG. 5).

With such a configuration, first, as shown in FIGS. 1 and 2,
With the outer case 32 positioned at the rising end, the main stacker 30 is loaded into the collecting device 1, and the perforated plate in the inner case 31 is placed.
A material aggregate W having a predetermined shape by depositing the forming material M on the 33
To form. Next, the stacker 30 that contains the material aggregate W
Is transferred to the shaving process shown in FIG.
The first shaving is performed by the roller 16 of No. 1 to smoothly remove the upper surface of the material aggregate W. At this time, shaving is performed at the upper surface level of the upper flange 38 of the outer case 32, and the excess molding material M deposited on the flange 38 is also discharged through the ducts 19 and 20 (FIG. 7).

Next, as shown in FIG. 4, the stacker 30 is conveyed onto the weighing device 21 in the shaving process, and the weighing device 21 first weighs it, and the second shaving removal amount by the second roller 17 is set. It is determined. Simultaneously with the determination of this deletion amount, the second roller 17 moves to a height where the deletion amount can be obtained, and then the preceding presser foot 72 is moved downward to lower the outer case 32 via the receiving member 71. The lowering of the outer case 32 causes the lock arm 67 to engage with the lock block 62, and the claw portion 68 thereof is caught by the lock block 62 so that the outer case 32 is locked at a position lowered by a predetermined height. From the upper surface of 30, the material aggregate has a predetermined height H
Only comes to protrude. The second aggregate of the material aggregate W on the moving stacker 30 is then shaving by the second roller 17, and the weight of the aggregate material W is adjusted to be constant.

Then, as shown in FIG. 5, the stacker 30 moves to a transfer process in which the retainer 6 stands by, where the outer case 32 is first lowered by the preceding presser foot 72 ', and then the retainer 6 is lowered. . When the holder 6 is sufficiently lowered, the material assembly W in the stacker 30 is transferred to the holder 6, and when the transfer is completed, the holder 6 and the frame 74 move upward. At this time, the unlocking arm 73 has already engaged with the lock block 62 and the locked state of the outer case 32 has been released, and the outer case 32 rises following the upward movement of the frame 74 to the original rising end. Be positioned at. The stacker 30 moves, for example, in a loop shape and is carried into the collecting device 1 again.

(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 stacker is formed of the inner case and the outer case, and the outer case is appropriately raised. Moreover, since the material assembly can be positioned in the descending position, the material assembly can be constantly projected from the stacker, and the weight can be adjusted by shaving afterward even if the bulk density becomes excessive. Further, since the outer case can be mechanically positioned without using a special driving means, the structure is simplified and the manufacturing cost is reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a 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. The figure is an enlarged cross-sectional view of the portion A in FIG. 2, FIGS. 4 and 5 are front views showing the usage of the present laminating machine, and FIG. 6 is a manufacturing process of a wood-based molded body to which the present collecting apparatus is applied. FIG. 7 is a schematic diagram showing the 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 ... Inner case, 32 ... Outer case 42 ... Coil spring, 53 ... Stopper arm 62 ... Lock block , 67 ... Lock arm 71 ... Receiving member, 72,72 '... Preceding presser foot 73 ... Lock release arm, 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 slidably on the inner case having a perforated plate holding the molding material and the inner case. The outer case is fitted to the outer case, and the outer case is always positioned at the rising end by the biasing means and the stopper device interposed between the outer case and the inner case. A gathering device for a wood-based molding material, characterized in that it is locked at a lowered position by a locking means interposed between the inner case and the inner case.