JPH0798321B2 - Floor material manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a veneer plate in which a plurality of thin veneers are preliminarily arranged side by side in a horizontal or vertical direction via an adhesive agent and abutted to each other. While sticking to the upper surface of the substrate, a groove is formed in the joint portion of the veneer plate (including the joint portion between the single plates constituting the thrust plate and the joint portion between the veneer plates that can be formed in the same direction as the joint direction). The present invention relates to a method for manufacturing a flooring material that has been installed and has no seams.

[Conventional technology]

The veneer attached to the upper surface of the substrate is, for example, a plurality of flitches (a plate material having a relatively thick surface rectangle) applied with an adhesive to the wood mouth surface by a conventionally known manufacturing method in the wood mouth surface direction. It is manufactured by sequentially arranging one by one and joining them together, and slicing them in parallel to the front and back plate surfaces. In other words, the veneer plate is a strip-shaped single plate in which a plurality of thin veneers are arranged side by side in a horizontal or vertical direction via an adhesive and are joined together by butt joining. For example, a plurality of seams of the veneer forming the veneer are arranged so as to form a one-piece connecting pattern, and a plurality of sheets are spread and attached.

The veneer thus pasted on the upper surface of the substrate is set in a conventionally known groove router device. Then, the router device is pre-positioned so that the position of the blade and the position of the joint of the one-character connecting pattern coincide with each other, and then the router device is activated. After activation, the blade of the device is connected to each seam of the veneer plates that are sent intermittently (joint between veneers and seam between veneers that can be formed in the same direction as the seam direction). By repeating the operation of appropriately descending at the position (including), engraving the seam in the groove and then ascending, all the seams are sequentially engraved and molded in the groove, and a seamless floor material is manufactured.

[Problems to be Solved by the Invention]

However, as described above, the veneer seams (including the veneer seams and the veneer seams that can be formed in the same direction as the seam direction) have a single tie pattern on the upper surface of the substrate. As described above, the work of arranging and laying it out is usually performed by a manual work or the like by visual measurement. Because of that,
The seams do not form a one-piece tie pattern in which the seams are regularly arranged with respect to each other, that is, the veneer is placed and pasted on the upper surface of the substrate with the positional relationship between one seam and the other seam that should be on a straight line shifted. Be worn. Due to this, even if the router device is operated after pre-positioning as described above before starting, at the seam position where the positional relationship is deviated,
There is a problem that the blade and the seam thereof do not match and the blade cuts a portion other than the seam (a portion out of the seam) to produce a defective floor material having no product value.

In addition, there are cases where a large number of timbers are adhered in advance to form an assembled block so that the cross section has a one-character connecting pattern, and the assembled block is sliced to obtain the veneer having the one-character connecting pattern at once. is there. In this case, the seam of the veneer may shift slightly to the left or right from the predetermined position due to an error when pasting the veneer on the substrate. Similarly to the case of (1), the blade and the seam thereof do not coincide with each other, and the blade causes a problem of grooving a portion other than the seam.

Therefore, in the present invention, a substance capable of identifying the seam is added to the adhesive layer of the veneer in advance (including the case of mixing the substance into the adhesive and the case of applying the substance to the surface of the adhesive layer). Detecting the presence of a substance, the accurate seam position is indexed for groove processing, and even if the seam is in a state where the positional relationship is deviated as described above, accurate groove processing is performed for the seam. It is an object of the present invention to provide a method for producing a flooring material that can be applied.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention comprises a plurality of thin veneers, which are arranged side by side in a horizontal (or vertical) direction via an adhesive and are abutted and joined to each other in advance on a substrate upper surface. A method for manufacturing a flooring material in which the seams of the veneers (including the seams between the veneers and the seams between the veneers formed in the same direction as the seam direction) are grooved to eliminate the seams In the above method, a material for seam identification is added (mixed or applied) to the adhesive layer at the seam portion of the veneer, and groove processing is performed while sensing the presence of the material.

As the substance for identifying the seam, for example, a colorant such as a pigment or a dye can be used. In this case, the colorant is added (mixed or applied) to the adhesive layer at the seam of the veneer.
In addition, the router device is provided with an optical sensor such as a reflective color-coded photoelectric tube for detecting the presence of the colorant, and based on the detection signal of the sensor, the blade position of the router device and the joint position of the veneer are determined. Are controlled so that they coincide with each other so that accurate groove processing can be performed on the seam.

Further, as the substance for identifying the seam, for example, a magnetic powder material can be used. In this case, a magnetic powder material is added (mixed or applied) to the contact layer at the seam portion of the veneer, and a magnetic (magnetic) sensor for detecting the magnetic force from the magnetic powder material is used as a router device. Installed in
Accurate grooving is performed on the seam while controlling the position of the blade of the router device and the seam position of the veneer based on the detection signal of the sensor.

[Work]

In the floor material manufacturing method configured as described above, in the seam recognition substance (colorant, magnetic powder, etc.) mixed in the adhesive at the seam portion of the veneer, the sensor (optical Sensor, metal (magnetic) sensor, etc.)
Is sensed (read) by. And its detection (reading)
An accurate seam position to be grooved is indexed based on the signal, and the movement of the blade position relative to the seam position is corrected.
Accurate groove processing is performed on the seam. As a result, even if the seam is in a state where the positional relationship with the cutting tool is deviated, there is no need to groove the parts other than the seam as in the conventional case, and it is always possible to accurately groove only the seam. Can be applied.

The substance for seam identification added (mixed or applied) to the adhesive layer at the seam portion of the veneer is naturally scraped off at the time of grooving the seam, so there is no problem of degrading the product value.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

In FIG. 1, reference numeral 1 denotes a floor plate, which is made up of, for example, a plurality of veneer plates 3 ... Here, the veneer plate 3 is made up of a plurality of thin veneer plates 3a ... Which are arranged in the lateral (or vertical) direction via an adhesive and are butt-joined to each other and are joined together. The manufacturing method will be described later. 4 is a seam of the veneer plate 3 (including a seam between the veneer plates 3a forming the veneer plate 3 and a seam between the veneer plates 3 formed in the same direction as the seam direction). In the example of FIG. 1, they are arranged in a one-character connecting pattern. Then, as will be described later, these seams 4 are grooved into, for example, a V groove 41 as shown in FIG. 4 to form a seamless floorboard 11. In addition, 5 in FIG.
Is a joint of the joints between the veneer plates 3 in the longitudinal direction, and the joint 5 can also be grooved separately from the joint 4.

By the way, an example of a method for manufacturing the veneer 3 will be described with reference to FIG. 5. First, a plurality of flitches (relatively thick surface rectangular plate materials) 6 ... After the adhesive is applied to 6a, they are arranged in a row in the horizontal (or vertical) direction one by one, and the cusp surfaces 6a are butt-joined to each other. In that case, a substance for seam identification for indexing a correct seam position for groove processing is previously mixed in the adhesive. Here, as the substance, for example, a colorant such as a pigment or a dye or a substance such as a magnetic powder that can be detected by a sensor is suitable.

Next, the flitches 6 ... Joined in series are sliced parallel to the front and back plate surfaces (direction of arrow AA). As a result, as shown in FIG. 2, a plurality of thin veneers 3a ...
A veneer plate 3 is manufactured which is aligned in the direction and butt-joined.

A plurality of veneer plates 3 manufactured in this manner are provided on the upper surface of the substrate 2 with seams 4 of the veneer plates 3 (including seams between the single plates 3a and seams between the veneer plates 3 formed in the same direction as the seam direction). Are arranged so as to form a one-piece connecting pattern and are spread and attached (see FIG. 1). In that case, it is assumed that the adhesive for the joint identification is also mixed in the adhesive at the joint between the veneer plates 3 formed in the same direction as the joint direction between the single plates 3a.
In some cases, it is preferable that the seam-identifying substance mixed in the adhesive of the seam 4 of the veneer 3 floats and appears on the surface of the adhesive layer after the adhesive is hardened, but is not limited thereto. Not a thing.

On the other hand, although not shown in the drawing,
A sensor for detecting the presence of the seam-identifying substance of the adhesive layer of the seam 4 is provided at an appropriate position so that the presence of the substance can be detected (read). The sensor may be an optical sensor such as a reflection type identification phototube if the substance for seam identification is the colorant, or a metal such as a metal (for example, a metal which can detect the magnetic force from the magnetic powder if the substance is a magnetic powder). A magnetic sensor is preferred.

Then, the router device detects the substance of the adhesive layer of the seam 4 of the veneer 3 attached to the upper surface of the substrate 2 by the sensor provided in the device, that is, while reading the position of the seam 4 by the sensor, The seam 4 is engraved and molded in a groove such as the V groove 41 with the blade of (see FIG. 4).

In that case, the router device, when the position of the seam 4 read by the sensor of the device is deviated from the position of the blade of the device,
Based on the reading (sensing) signal of the sensor, the control device (not shown) installed in the router device determines the correct seam 4 position for groove processing and moves the blade position to match the seam 4 position. After the correction, the operation of accurately grooving the seam 4 is automatically performed.

It is to be noted that the router device is provided with a pair of mechanisms including the above-mentioned sensor and a blade capable of controlling the movement to an accurate seam position for groove processing by the sensor reading signal. A plurality of sets (for example, three sets) corresponding to the positions of the seams corresponding to the number of the four seams (for example, three) are provided, and for example, the first set is provided for the router device.
The veneer plate 3 (floor plate 1) shown in the figure is intermittently conveyed in the direction of the arrow B, and at the positions of the first two seams 4a and 4b of the veneer plate 3, two pieces are installed corresponding to the positions. After lowering the blade and simultaneously grooving these two seams 4a and 4b, raise these two blades and then correspond to that position at the next three seams 4c, 4d and 4e. Lower the three blades that have been installed, and simultaneously perform groove processing on these three seams 4c, 4d and 4e, then raise these three blades, and then perform groove processing in the same manner. If so, accurate groove processing can be performed very efficiently and quickly. In this example, the case where the veneer plate 3 (floor plate 1) is intermittently conveyed to the fixed router device has been described, but conversely, the veneer plate 3 (floor plate 1) is fixed, It is also possible to form a groove on the veneer 3 (floor plate 1) by intermittently slidingly moving the router device having the above mechanism in a predetermined direction.

Further, it may be possible to lower the three routers at once to perform a required groove processing.

Further, in this embodiment, the case where the substance for seam identification is mixed in advance in the adhesive has been described, but the present invention is not limited to this, and for example, the substance is directly bonded so that it can be detected (read) by a sensor. It may be applied to the layer surface.

The above is a description of the embodiment of the present invention based on the floor plate shown in FIG. 1, but the floor plate shown in FIG. 2 also enables desired groove processing in the same manner. . That is, FIG. 1 shows the substrate 2
In this case, the floor board has a structure in which one plate 3 is attached to the upper surface of the floor board. In this case, the moving direction of the floor board is perpendicular to FIG. 1B, that is, the longitudinal direction of the floor board is moved to a predetermined position. The groove is detected by lowering the router that detects the groove. And, FIG. 1 is similar to the case of the floor board,
A substance for identifying the seam is added to the adhesive at the seam 4 portion of the veneer 3 to enable the position of the seam 4 to be read by a sensor so that the position of the blade of the router device and the position of the seam 4 coincide with each other. It is possible to perform efficient and accurate grooving by controlling the grooving.

〔The invention's effect〕

As is apparent from the above-described embodiments, the present invention adds a substance for seam identification (mixing or application) to the adhesive layer of the seam portion of the veneer, and performs groove processing while sensing the substance. Therefore, even if the seam is in a state where the positional relationship with the cutting tool is deviated, an accurate seam that should be grooved by sensing an actual seam identification substance on the adhesive layer surface of the seam. Since the position can be indexed and the groove processing can be accurately performed only on the seam, there is no need to perform the groove processing on the portion other than the seam as in the conventional case, and the production of a defective floor material having no product value. Can be prevented and so-called yield can be improved.

Also, while using a colorant as a substance for seam identification,
An optical sensor for detecting the presence of the colorant is provided in the router device, and control is performed based on the detection signal of the sensor so that the position of the blade and the position of the seam coincide with each other, so that an accurate groove is formed on the seam. If the machining is performed, the position of the blade is always automatically moved and corrected to the correct seam position where the groove should be machined, and the accurate groove machining can be performed on the seam. As a result, unlike the conventional case, it is not necessary to repeat the alignment work between the blade and the seam before starting the router, and once the alignment is done, the positional relationship with the blade is temporarily displaced. Even if a seam is encountered, it is possible to accurately perform the groove processing only on the seam without performing the groove processing on the portion other than the seam as in the conventional case.

In addition to using a magnetic powder material instead of the colorant,
Metal (magnetic) for sensing magnetic force from the magnetic powder material
If a sensing sensor is used, the sensor installation space is smaller than that of the optical sensor consisting of a light emitting part and a light receiving part, so it can be easily installed without providing a special space in the existing router device, which is economical. It is possible to perform highly accurate groove processing that is advantageous to the above.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a floor material in which a plurality of veneer plates are stuck on the upper surface of a substrate, and FIG. 2 is a plan view showing a floor plate in which one veneer plate is stuck on a substrate, FIG. 3 is a side view of FIG. 1 or 2, FIG. 4 is a side view of a floor plate in which a seam portion of the veneer is carved in a V groove to eliminate the seam, and FIG. 5 is an example of a method for manufacturing the veneer. FIG. 1 ... Floor board, 2 ... Substrate, 3 ... Veneer, 3a ... Single board,
4,4a, 4b, 4c, 4d, 4e …… Seam, 41 …… V groove, 6 …… Flitch, 6a …… Kiguchi face.

Claims (3)

[Claims] 1. A veneer comprising a plurality of thin veneers arranged side by side in a horizontal or vertical direction via an adhesive and butt-bonded to each other in advance, and the seams of the veneers are bonded together. In a method of manufacturing a flooring material in which a groove is formed on a portion to eliminate the seam, a substance for identifying a seam is added to an adhesive layer of the seam portion of the veneer, and the groove is formed while sensing the presence of the substance. A method for manufacturing a flooring material, which is characterized by the above. 2. A colorant is used as a substance for identifying a seam, and an optical sensor for detecting the presence of the colorant is provided in a router device, and based on a detection signal of the sensor, a position of a blade of the router device and 2. The method for manufacturing a flooring material according to claim 1, wherein the seam position of the veneer is controlled so as to match the seam position so that the groove can be accurately formed on the seam. 3. The manufacturing method according to claim 2, wherein a magnetic powder material is used instead of the colorant, and a metal (magnetic) detection sensor for detecting a magnetic force from the magnetic powder material is provided in the router device. A method of manufacturing a flooring material that is grooved.