JPS58201872A - Joining method for sheetlike material - Google Patents

Abstract

PURPOSE:To carry out the joining at a higher speed and accuracy, by placing ends for joining of joining sheetlike materials e.g. veneers, on top of each other, cutting the superposed parts of the ends for joining with a blade for forming the tooth form, displacing the sheetlike materials while the blade is present to position both sheetlike materials in the same plane, meshing the teeth to join the sheetlike materials. CONSTITUTION:Elastomers 5 and 6, e.g. urethane, are supported by a holder 8 along a blade 3, and a steel plate 7 is provided in the elastomer 6 at a position in contact with veneers 1 and 2. Superposed parts of ends for joining of the veneers 1 and 2 to be joined are cut with a blade 3 for forming the tooth form while preventing the cracking of the veneers 1 and 2, which are then displaced along the displacement of a movable table 10 with the blade 3 as a guide while the blade 3 is present in the veneers 1 and 2. The rear end scrap 2' of the veneers 1 and 2 are displaced with the elastomer 5 to position the veneers 1 and 2 in the same plane, and the blade 3 is then removed to form the teeth integraly with the meshing of the veneers 1 and 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a method for joining sheet-like bodies such as veneer veneer, 8 plywood, particle board, cardboard, synthetic leather, and plastic plates.

The present invention forms a tooth profile at the joint end of the sheet-like body,
It is similar to a joining method in which the tooth profiles are engaged and joined. Furthermore, the present invention is not limited to a type of bonding in which the bonding strength is obtained simply by the meshing of tooth shapes, but can also be applied to bonding techniques in which bonding materials such as adhesives or threads are added.

As a prior art, there is Japanese Patent Publication No. 45-8118, which describes this type of joining method. but,
The disclosure of specific methods and methods for tooth profile formation and meshing was limited to abstract concepts.

The present invention provides a joining method that organically combines the formation of tooth profiles and their meshing, and aims to contribute to various industries that handle the above-mentioned sheet materials by increasing the speed and precision of this type of joining. It is. The details will be explained using a technique for vertically joining veneer veneers (hereinafter referred to as veneers) as an example in the drawings.

First, FIGS. 1 to 4 and FIG. 17 illustrate an example of a joining mode between veneers 1 and 2. The present invention is not limited to the illustrated tooth shapes, but can form tooth shapes of arbitrary patterns and mesh them. A tooth profile forming cutter 8 as illustrated in FIG. 5 is used as the main member for forming such tooth profiles and engaging them. Usually, this type of cutter 3 is constructed by forming a thin blade into a desired bent shape, but any other tool is sufficient as long as it can cut the veneers 1 in a row Cζ2 with their joint ends overlapped. However, the veneer shown in Figure 1.

When cutting with the illustrated knife 8, there is a tendency for one crack to occur. Therefore, as shown in FIG. 6, along the blade 3, an elastic body 5.6 made of rubber, sponge, urethane, etc. is supported by the holder 8 along with the blade 8 as shown in FIG. 7, if necessary. The elastic body 6 on one side has a steel plate 7 attached thereto where it comes into contact with the veneer, so that the veneer can be cut together with the elastic body 5 while being pressed from both sides of the blade 3. still.

This steel plate 7 is added not only to prevent cracks but also to perform other functions described later. In any case, the above-mentioned members related to the cutlery 3 are collectively referred to as:
Hereinafter, it will be referred to as the cutter head 9.

On the other hand, regarding the blade receiving side of the cutter head 9, it is shown in FIG. A blade receiver member 12 made of a material such as hard urethane is laid down.Then, the blade receiver separates the movable table 10 having the member 12 from the fixed table 11 at a position slightly apart from the cut line 4. If necessary, they are configured to be movable in the direction of the arrow in the engaged state as shown in the figure.

Knife head 9 as above. Movable table 10 on the blade receiving side
Furthermore, the fixed table 11 constitutes the main part of a bonding apparatus as shown in FIG. 10, for example.

The illustrated device is also equipped with a carry-in conveyor 19 for carrying the veneer in the direction of the arrow to the movable table 10, but when necessary, the displacement carried out in the direction of the arrow at a position directly below the cutter head 9 is carried out by a cam. 14 is rotated, and a swinging motion is performed around the support shaft 16 via the cam ball 15. On the other hand, at a position in front of the blade head 9, there is a detector 18. Behind the cutter head 9 is a carry-out conveyor 18 for carrying out the veneers after joining. and the conveyor 18
A waste discharge port for discharging cutting waste is formed between the two.

Therefore, the above-mentioned joining device transports the veneers with the joined ends overlapped with each other by the carrying-in conveyor 19, and detects the overlapping part with the detector 13 during the conveyance,
Based on the detection signal, the carrying-in conveyor 1
9 and the delivery conveyor 18 as necessary. Then, the blade head 9 and the movable table 10 perform the operations as illustrated in FIGS. 11 to 15 with respect to the overlapping portion, thereby joining the veneers. Thereafter, the conveyors are started again and the same operation is repeated each time the first overlapping section arrives. The control mechanism for conveying the veneer is the same as that of a known veneer horizontal crosscutting machine or vertical crosscutting machine, and in addition, the veneer detector 13 also measures the thickness of the veneer at multiple locations in the direction perpendicular to the page. It can be constructed with a conventional detection mechanism such as one that performs (5) detection.

By the way, the details of the process of joining the veneers will be explained based on FIGS. 11 to 15.

First, in FIG.
This figure illustrates the state at the point where the overlapping portion with the two ends has reached.

FIG. 12 continues from FIG. 11 and shows the blade head 9.
This shows the state in which the veneer has been cut in layers. At this time, 1 elastic body 5 is lined up with steel plate 7.

As mentioned above, this prevents the veneer from cracking.

Even in response to the displacement of the movable table 10 after overlapping cutting as shown in FIG. The veneers 1 and 2 are positioned in the same plane by following the displacement.

That is, the above-mentioned displacement is for one time when the tooth profiles are engaged with the cutter 8 interposed, and the presence of the knife completely prevents the two tooth profiles from overlapping each other in the engagement process. It has a guidance function (6) to realize meshing. This is a configuration in which the cutter 3 after repeated cutting is continuously operated during the subsequent engagement process, and the tooth profile formation and the engagement process are organically integrated.

Further, the presence of the steel plate 7 which is elastically held in this step exerts a somewhat more specific effect than the direct suppression caused by mere elasticity. That is, in FIG. 13, the veneer 2 on the fixed table 11 and the front end layer 1' of the veneer 1 are
Even if the movable table 10 is displaced, it is desirable in this example to hold it firmly within a predetermined plane. Therefore, in order to avoid displacement of the portion near the cut line protruding from the tip of the fixed table 11, the local follow-up pressure of the elastic body is restricted by interposing the steel plate 7. Therefore, the auxiliary members such as this kind of steel plate 7 or elastic bodies 5 and 6 should be adjusted depending on the dimension (°°°, although it may be 0) protruding from the tip of the fixed table, or the strength characteristics of the sheet-like objects to be joined. It is enough to attach it according to the situation.

When the movable table 10 is displaced as shown in FIG.

It is important that the veneers 1 and 2 on both sides of the cutter 3 are located substantially in the same plane. After that, as shown in FIGS. 14 and 15, the blade head 9 is removed and the movable table 10 is returned to its original position, leaving the veneer scraps 1' and 2' remaining above and below as shown in FIG. 16. becomes.

As is clear from the embodiments of the present invention, the joining method of the present invention is based on the premise that the joining ends of sheet-like materials such as veneers to be joined are first overlapped, and overlap cutting with a knife, and displacing at least one of the sheet-like bodies in the thickness direction using the knife as a guide while the knife is intervening, so that both of the sheet-like bodies are positioned substantially in the same plane; After that, the cutter is removed from the sheet-like body, and the tooth profile is formed and the teeth are engaged.

Therefore, since the formation of tooth profiles and their engagement can be performed in a continuous process at the same location, even if the material has strength characteristics that easily cause cracks and chips, such as veneer,
Extremely smooth and high speed with the guidance of the cutting tool.

This has the effect of achieving the desired tooth profile joining with high precision. In particular, Fig. 17, Fig. 1 arrangement (as shown in Fig. 2),
If the shape of the tooth profile is wide at the end, it is likely that the wide area will be missing.

With the method of the present application, such chipping can be easily prevented and extremely good bonding can be achieved.

5 Normally, when positioning both sheet-shaped bodies in the same plane after one-layer cutting, all tooth profiles are positioned in almost the same plane, but if necessary, , it may be within a curved surface, or it may be at any number of tooth profiles rather than all of the tooth profile. Of course, when positioning them in the same plane, it is possible to displace only one side as in the embodiment shown, or alternatively, to displace both sides.

Furthermore, it is sufficient to arbitrarily design which direction in the thickness direction one of them should be displaced.

In addition, when the veneer described above in Example 8 is used, and in the case where the veneer is a green veneer with a high moisture content, a bonding technique mainly using adhesive is used.(9) It took several seconds to several minutes for curing, which seriously hindered productivity, but if used in combination with the three methods of the present invention, first of all,
Since the strength of mechanical bonding due to the interlocking of tooth shapes can be obtained instantly, it is only necessary to generate adhesive strength under this strength, which has the effect of significantly expanding the selection range of adhesives used for this purpose. .

As described above in detail, the present invention greatly contributes to various industries related to sheet-like bodies.

[Brief explanation of drawings]

Figures 1 to 4 and Figure 17 are partial plan views illustrating the state in which the veneer as a notebook-like object is vertically cut, Figure 5 is a perspective view illustrating the state in which the veneer is cut in layers, and Figure 6 is the FIG. 7 is a plan view of the blade 3 that performs overlapping cutting, FIG. 7 is a front view thereof, FIG.
The figure is a front view thereof, and FIG. 10 is a side view of the joining device. 11 to 15 are side views specifically illustrating the joining process, and FIG. 16 is a perspective view of the veneer scrap. (10) In the figure, 1 and 2... veneer, 3... tooth profile forming knife, 5
and 6...elastic body, 7... steel plate. 9...Cutter head, 10...Movable table, 11...Fixed table, 18...Detector, 14...Cam, 16...
Support shaft... Patent applicant: Meinan Seisakusho Co., Ltd. (11) 1.1872-201872 (6) Procedural amendment (voluntary) July 2, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi Tokoro F1, indication of case Patent application filed in 1988 No. 86160 No. 2, Name of the invention (Rishan Contains Ha) Higashi 3, Person making the amendment Relationship to the case Patent applicant postal code 474 Telephone (0562) 47-22
115. Subject of amendment Full text of the specification 6. Contents of amendment The entire text of the specification is amended as shown in the attached sheet. 513-

Claims (1)

[Claims] The joined ends of the sheet-like bodies to be joined are overlapped, and then cut with a tooth-forming cutter to form a tooth-like shape on the joined ends of both sheet-like bodies. Using as a guide, displace at least one of the sheet-like bodies in the thickness direction so that both sheet-like bodies are positioned approximately in the same plane, and then remove the cutter from the sheet-like body and A method for joining sheet-like bodies, which is characterized by joining by interlocking tooth shapes.