JPS5932356Y2 - Continuous tie member - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a band-shaped continuous tie member having a cross-sectional shape of a tie, which is used as a joining reinforcing material mainly for joining members together in the assembly of wooden picture frames and the like.

When joining parts of wooden products, various techniques are generally applied to the joining surfaces of the parts in order to obtain assembly rigidity.

In order to achieve high joining processing accuracy and work efficiency when joining pieces of wood that are uneven, structured, and oriented in terms of strength, the joining process is simplified and most of the time. In this case, bonding strength is achieved by using a vinyl acetate-based adhesive that is inexpensive and contains moisture and has good adhesive strength.

However, with the above method, it cannot be said that sufficient assembly rigidity of the product as a whole is obtained, and the joint strength is usually supplemented by reinforcing materials such as metal fittings and dowels at the joints.

On the other hand, especially in the joints of small wooden articles such as picture frames, the members are often thin and thick, the joint area involved in joining is small, and the joint strength is insufficient even with the above-mentioned adhesive.

Furthermore, it is not appropriate to use the above-mentioned reinforcing material because the member is thin and thick, so the inside of the joint is narrow.

Due to this situation, other reinforcing means are required to join the small wooden items mentioned above, but they are already nailed together with metal fittings, or the pieces that have been appropriately devised by craftsmen are not able to absorb the adhesive. It is reinforced by being buried in the joint.

However, metal fittings are not compatible with the properties of wooden products.
, On the other hand, the work efficiency is low when the pieces are made individually.
Since it is a manual process, it has poor reproducibility, is messy, and has the problem of not being able to standardize the work.

Therefore, the present invention was devised to solve the above-mentioned disadvantages. In general, when bonding pieces are applied compressive force to the surfaces involved in adhesion, they absorb the moisture contained in the adhesive, and As a result, the area where the compressive force is applied swells and the degree of fit increases.

Utilizing this fact, the present invention provides a band-shaped continuous girder member which is characterized in that, when cut into girder pieces, compressed grooves are formed on the adhesive surface due to compressive force. .

Hereinafter, the present invention will be explained based on an illustrated example.

FIG. 1 is a perspective view showing a state in which a continuous band member 1 is inserted and compressed by a press molding machine 5 before being cut into the link pieces 3 of the present invention, and FIG. 2 is a perspective view of the same member. It is.

The band-like continuous tie member 1 of the embodiment has a cross-sectional shape that is approximately a figure eight in width, and a large number of long and thin compressed grooves 2 having a concave cross-sectional shape are formed in parallel along the width direction thereof. ing.

This tie member 1 has a valley line 1 formed along its longitudinal direction at the center in its width direction, and on both slopes 1b, lb that sandwich this valley line, there is a valley line 1 facing either side. The compression groove 2 is provided.

Note that the width direction of the tie member 1 will be subjected to tensile force etc. when it is later cut and used as the tie piece 3 shown in FIG. ing.

Next, a molding device for providing a large number of compressed grooves 2 in this hinge member 1 will be explained with reference to FIG.

The band-shaped tie member 1 before being cut into the tie pieces 3 is placed on a loading table 4.
is being prepared.

The press molding machine 5 includes a pair of press rollers 6 and 6', their rotating shafts 5a and 5a', a Japanese-style press frame 7 for inserting and holding the rollers, and finely moving the rotating shaft 6a up and down to adjust the press interval. It is generally composed of an adjustment section 8 for setting, and a transmission device 9 for driving the rotating shaft 6a'.

The pair of press rollers 6.6' have the same shape, and are approximately cylindrical and symmetrical with respect to their respective central planes, and their side lines correspond to the middle direction of the side slopes 1b, 1b of the hinge member 1. It is a match.

Therefore, the central part of the press roller 6.6' has a larger diameter than the two end parts.

On the other hand, a large number of compression grooves 2 are formed on the substantially cylindrical outer circumferential surface of the press roller 6.6' so as to be slightly opposed to each other with the center surface as a boundary and substantially along the rotation axis. Long and thin protrusions 10 are formed in a parallel spiral shape.

A rotation shaft 6a for rotationally holding the press roller 6 is connected to an adjustment hole 1 located at the upper part of the opposing upright surface of the frame 7.
1.11 is inserted.

The rotating shaft 6a can be finely moved up and down by the adjusting parts 8, 8 to adjust the press interval as appropriate.

A rotating shaft 6a' that rotates and holds the other press roller 6'
The transmission device 9, which is driven by a motor, is attached to one of the two.

Next, a method for forming the compressed grooves 2 in the above-mentioned hinge member 1 using the press molding machine 5 having the above configuration will be explained.

At the same time that power is transmitted to the rotating shaft 6a' via the transmission device 9, the press roller 6' is activated.

On the other hand, the distance between the pair of upper and lower press rollers 6, 6' is adjusted in advance by the adjusting section 8 so that the binding member 1, which is the object to be pressed, is inserted and pressed.

At the same time as the tip of the member 1 is fed into the above-mentioned interval, the upper press roller 6 also begins to rotate.

Gradually, the binding member 1 is moved to the press roller 6.6'.
While being compressed, compressed grooves 2 are sequentially formed on both sides by the projections 10, and the sheet is sent out.

The continuous girder member 1 manufactured in this way before being cut into girder pieces 3 is then cut in the width direction to an appropriate thickness, and as shown in FIG. This will be piece 3.

In one embodiment, the piece 3 made in this way is used as a joint reinforcing material on the outer surface of the joint part 12a of a wooden member 12 or the like as shown in FIGS. 4a and 4b.

The reason for this is that, in general, when joining a member 12a such as a wooden picture frame 12 using a thin member as shown in FIG. The fastening type bonding method, which provides the best bonding effect and the best appearance, is used using an adhesive.

However, this alone does not provide sufficient assembly rigidity as a whole.

Therefore, by embedding and adhering the above-mentioned tie piece 3 on the back surface of the product orthogonally to the fastening joint, the overall assembly rigidity can be increased.

As shown in FIGS. 3 and 4, for strength reasons, the length of the tie piece 3 is in the direction of the wood fibers, and both ends 3a
, 3a are wider than the center part of this tie piece 3, and both ends 3a are centered around the center part as a whole.
, 3 It has a wedge shape towards a.

In addition, buried adhesive recesses 12C, 12C shown in FIG. 4C are formed at the center of the fastening adhesive corner lines of both the members 12a, 12a, perpendicular thereto.

The shape of the recesses 12a, 12a is made to substantially match the shape of the above-mentioned tie piece 3, so that it can be embedded and fitted.

A commonly used adhesive that contains water, has good adhesion performance, and has excellent void-filling properties is applied to the back surface and both side surfaces 3b, 3b related to the fitting of the tie piece 3, and the above pair of recesses 12C, 1
2C to be buried and glued.

Thereafter, over time, the compressed groove 2 of the tie piece 3 absorbs more moisture from the adhesive than other parts and swells, applying pressure to the recessed side wall 12e, resulting in a reduction in the degree of fit between the two. becomes stronger.

As a result, its effectiveness as a reinforcing material increases.
The assembly rigidity of the entire product is also improved.

The shape, molding device, molding process, and post-processing of the embodiment have been described above, and FIG. 5 shows a modification of the embodiment of the present invention.

FIG. 5a shows a wedge-shaped wedge in the longitudinal direction centering on the center, and compression grooves 2 facing each other centering on the center are formed on the side surfaces of the wedge.

Similarly, in FIGS. 5A and 5C, the longitudinal end portions are rectangular and approximately circular, respectively, and compressed grooves 2 are also formed on their side surfaces.

As described above, the band-shaped continuous tie member according to the present invention before being cut into pieces having a large number of compressed grooves has a predetermined cross-section in the shape of a piece, so the width after press molding is Just by cutting in the direction, you can create a large amount of the necessary pieces.

Furthermore, molding of the compression groove is extremely easy.

In addition, this tie member is applied to the surface of the wood board, which is highly hygroscopic.
Since compressed grooves are formed in parallel in a continuous or intermittent manner, some of the compressed grooves formed on both sides in the longitudinal direction of the hinge piece were buried and bonded with adhesive, so that they could absorb moisture. It swells and has a higher degree of fit than conventional tie pieces, which has the effect of further improving performance as a reinforcing material.

Therefore, it has the effect of increasing the work efficiency in creating a series of kashi pieces and promoting work standardization.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a state in which a band-shaped continuous girder member is inserted into a press machine before being cut into girder pieces, showing an embodiment of the present invention; Fig. 2 is a perspective view of the same girder member; Figure 3 is
Perspective view of a shingle piece made by cutting the example shingle member, No. 4
Figure a is a perspective view of a picture frame to which the embodiment is applied, and Figure 4 is:
FIG. 4A is a front view of the main part, FIG. 4C is an exploded perspective view of the main part of FIG. 4A, and FIGS. It is. 1...Continuous tie member, 2...Compression groove,
3...King piece, 5...Press molding machine,
6.6'...Press roller, 10...
Projection of press roller, 12... Picture frame, 12a.
... Member, 12 C ... Concave part for burying the tie piece.

Claims (1)

[Scope of utility model registration request] A continuous tie member characterized in that a large number of compressed grooves are formed continuously or intermittently along the width direction of a strip-shaped highly hygroscopic wood board having a cross-sectional shape of a tie piece.