JPH0684004B2 - Shaving equipment for wood molding materials - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a shaving apparatus for a wood-based molding material used when manufacturing a wood-based molding, and more specifically to a wood fiber to which a binder or the like is added. The present invention relates to a shaving apparatus for removing the upper surface of a material aggregate obtained by depositing a wood-based forming material on a perforated plate in a laminated container and adjusting the weight thereof.

(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 be thermocompression-molded.
No. 203, JP-A No. 62-134215, and the like.

In this manufacturing method, as shown in the schematic steps of FIG. 4, 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. The stacker 4 and the diffuser 3 are detachable, and then the stacker 4 is separated from the diffuser 3 and the material assembly W is transferred to the holder 6. Cage 6
Has a porous plate 7 similar to the one described above inside, and the inside thereof can be exhausted by an exhaust means (not shown). The material aggregate W is sucked onto the porous plate 7 of the retainer 6. Retained. 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 has already been disclosed in Japanese Patent Application No. 61-184774.

FIG. 5 shows the details of the shaving device. In the figure, reference numeral 12 is a carrying table for carrying the stacker 4, and a conveyor (not shown) is incorporated therein. An exhaust pipe 13 for exhausting the inside of the stacker 4 is arranged below the transport table 12 at a site where the collecting apparatus 1 is installed. A shutter 15 that can be opened and closed by a cylinder 14 is provided on one side of the sprayer 3. The shutter 15 is opened when the deposition of the molding material M on the perforated plate 5 is completed, and the material assembly is opened. W is conveyed to the shaving process together with the stacker 4.

In the shaving process, the first adjacent to the collecting device 1
Shaving roller (deleting means) 16 is provided, and a second shaving roller (deleting means) 17 is provided at a predetermined distance from the first shaving roller (deleting means) 16 in the transport direction of the stacker 4. Is provided. First, second
The shaving rollers 16 and 17 are formed by arranging a large number of needle-like bodies on the peripheral surface of the shaft, and have a length larger than the width of the laminating machine 4, and the entire length thereof is covered with the covers 18 and 18. ing. 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 position of the first shaving roller 16 is fixed, and the upper surface of the material assembly on the laminator 4 can be removed smoothly, while the position of the second shaving roller 17 is up and down. The upper surface of the material aggregate W can be removed to an arbitrary depth. 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 shaving rollers 16 and 17. The weighing device 21 is a table that can be moved up and down by a cylinder 22.
23 is equipped with a weight sensor 24, and the weight of the weight sensor 24 is raised by raising the table 23 by operating the cylinder 22.
Place the lower frame 4a of the stacker 4 on the
The total weight of the laminated container 4 including can be measured.

That is, the first and second shaving rollers 16 and 17, the ducts 19 and 20, the weighing device 21 and the like are included in one shaving device 30.
And the material aggregate W together with the laminating machine 4 constitute a transport table.
While moving over 12, its upper surface is removed by the first shaving roller 16 and subsequently its weight is measured by the weighing device 21. Then, based on this weighing result, the deletion amount (deletion height) of the second shaving roller 17 is determined, and the second shaving roller 17 moves to a height where the deletion amount can be obtained and moves to the material aggregate. By removing the upper surface of W, the weight of the material aggregate W is kept constant. The molding material deleted by the shaving rollers 16 and 17 is returned to the original state via the sub duct 19 and the main duct 20.

(Problems to be Solved by the Invention) However, according to the shaving device, the cover is
Since the shaving rollers 16 and 17 are evenly covered by 18, the suction amount of air on both ends inside the cover 18 is insufficient compared to the middle part, and as a result, part of the deleted molding material is a material collection. There is a problem that the weight remains on the upper surfaces of both sides of the body W and the accuracy of weight adjustment of the material assembly W is impaired. In order to prevent the molding material from remaining on the both side portions, when the suction amount of the air sucked through the cover 18 is increased, more molding material than necessary is carried away from the central portion in the width direction of the material aggregate W, and the same as above. Weight adjustment becomes difficult.

The present invention has been made in view of the above conventional problems,
An object of the present invention is to provide a shaving apparatus for a wood-based molding material that can smoothly discharge the molding material deleted by the shaving roller from the material aggregate to finish the surface to be deleted and thereby improve the weight adjustment accuracy.

(Means for Solving the Problems) The structure of the present invention for solving the above problems will be described with reference to FIG. 1 and FIG. 2 which are embodiment drawings. The point is that a flow control plate 32 for adjusting the amount of suction of air in the longitudinal direction of the deleting means is provided on the rear surface of the covering cover 18 which is the back of the shaving direction of the deleting means.

(Operation) In the shaving apparatus for a wood-based molding material having the above-described configuration, by setting the shape of the flow rate control plate so that the suction port of the portion corresponding to the portion of the molding material deleted by the deleting means tends to remain narrow, The air suction amount on the front side in the shaving direction corresponding to that portion is increased as compared with other portions, the air suction amount required for discharging the molding material can be secured, and the deleted molding material can be more reliably eliminated.

(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing. In the following figures, the same parts as those shown in FIGS. 4 and 5 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 1 and FIG. 2, the cover 18 covering the shaving roller 16 (17) as a deleting means is formed by the rear portion, that is, the shaving roller 16 (17) located on the downstream side with respect to the transport direction B of the stacker 4. An opening 31 is provided at a rear part in the shaving direction, and a flow control plate 32 for covering the opening 31 is attached to the rear of the opening 31. The flow control plate 32 has a curved notch in an intermediate portion with respect to the longitudinal direction of the shaving roller 16 (17), whereby an air suction port 33 having a middle height is formed in the rear surface of the cover 18. ing. Reference numeral 34 is a rotary shaft of the shaving graw roller 16 (17) (FIG. 2) and is connected to a motor (not shown).

With such a configuration, according to the embodiment shown in FIG. 5, the forming material M is deposited on the perforated plate 5 of the laminating machine 4 to form the material aggregate W, which is put in the shaving process together with the laminating machine 4. Bring in. The material aggregate W conveyed in the shaving process moves on the conveying table 12 together with the stacker 4 while the first shaving by the first shaving roller 16, the weight measurement by the weighing device 21, and the second shaving. Receive the second shaving by the shaving roller 17 in order,
Its weight is constant.

During the shaving, the molding material removed by the shaving roller 16 (17) is sucked into the sub duct 19 from the front side of the cover 18, and further discharged to the main duct 20. At this time, since the air suction port 33 is narrowed on both end sides of the cover 18, the suction amount of air on the front side in the cover 18 corresponding to the both end sides is relatively increased, resulting in a molding material. A sufficient amount of air to be discharged can be secured, and the upper surface of the material assembly W discharges most of the remaining undischarged molding material, which makes the upper surface smooth and improves the accuracy of weight adjustment. improves. Moreover, in this embodiment, the suction port 33 is provided by using the flow rate control plate 32 which is separate from the cover 18.
Therefore, even if the shape of the material aggregate W is changed, there is an advantage that it can be easily dealt with by simply replacing the flow rate control plate 32.

Here, as shown in FIG. 3, the laminating device 4 includes the perforated plate 5 so that the deep-drawn portion does not become abrupt in the pressing direction during the subsequent thermal compression molding (FIG. 4). There is a case where the material assembly W that is inclined in one direction as a whole is manufactured by inclining the upper part including the shaving roller as shown in the figure when the stacker 4 is targeted.
Suction port 3 formed by the flow rate control plate 32 so that the upper surface of the material aggregate can be uniformly removed by inclining 16 (17) as well.
Set 3'to be larger on the upper side. With such a configuration, when the shaving roller 16 (17) is used for removal, the removed molding material flows downward,
Since the suction amount on the upper side is small and the suction amount on the lower side is large, the deleted molding material is preferentially discharged from the lower side, and the discharge residue of the molding material is reduced as in the above embodiment.

In the above embodiment, the suction port 33 is formed by the separately provided flow rate control plate 32.
32 may be formed integrally with the cover 18.

(Effects of the Invention) As described in detail above, according to the shaving apparatus for a wood-based molding material according to the present invention, the flow rate control for adjusting the suction amount of air in the longitudinal direction is performed on the cover that covers the deleting means. Since the plate is provided, the molding material removed from the upper surface of the material assembly can be more surely removed, and the effect of significantly improving the weight adjustment accuracy can be obtained. Further, it becomes possible to properly set the air suction amount, and it is possible to obtain the effect of preventing the shape collapse of the material aggregate in advance.

[Brief description of drawings]

FIG. 1 is a sectional view showing a part of a shaving apparatus for a wood-based molding material according to the present invention, FIG. 2 is a front view taken along the arrow A of FIG. 1, and FIG. 3 is a modification of the present invention. An example front view, FIG. 4 is a schematic diagram showing a manufacturing process of a wood-based molded body to which the present collecting device is applied, and FIG. 5 is a schematic diagram showing a shaving process added to the manufacturing process together with a collecting device. is there. 4 ... Laminater, 5 ... Perforated plate 16,17 ... Shaving roller (deleting means) 18 ... Cover, 19, 20 ... Duct 21 ... Weighing device, 30 ... Shaving device 32 ... Flow control plate , 33 …… Suction port W …… Material aggregate

Claims (1)

[Claims] 1. A shaving apparatus for removing the upper surface of a material aggregate obtained by depositing a wood-based molding material obtained by adding a binder or the like to wood fibers in a laminating machine to adjust the weight thereof. A rear surface of the cover, which is provided with a deleting means for smoothly deleting the upper surface of the material aggregate on the container, covers the entire length of the deleting means with a cover connected to the duct, and is a back side with respect to the shaving direction by the deleting means. A shaving apparatus for a wood-based molding material, further comprising a flow rate control plate for adjusting an air suction amount in the longitudinal direction of the deleting means.