JPS62278001A - Method of contact bonding of flitch, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of manufacturing plywood and the like by laminating two or more boards together, and particularly relates to a method of manufacturing plywood and the like by laminating two or more sheets of board together, and in particular, this lamination is carried out using a roller. This relates to a method of crimping while rolling.

[Conventional technology]

In general, plywood such as plywood and relatively regular plywood used as furniture materials are pasted after applying an adhesive such as glue to the surface to be pasted, and then left under pressure with a press for a long time until the adhesive dries. Manufactured.

In addition, showcases and display stands are often made of 6 wood with a decorative board such as Decora attached, and the sizes and shapes vary and many have special shapes. For this reason, a press cannot be used to attach the material, or a quick-drying adhesive may be used to improve work efficiency. In such cases, the best method is to hit the board with a rubber hammer and press it. It is being

[Problem that the invention seeks to solve]

When manufacturing plywood materials, it is important to push out air and excess adhesive that are mixed in on the bonding surfaces between the sheets during crimping, and to apply uniform pressure to the entire surface of the sheets.

However, in the prior art, there is no particular problem when press-bonding regular-shaped plywood such as plywood using a press. When crimping is carried out, it is not only a heavy burden on the worker, but also the efficiency of the work is low considering the amount of effort required.In addition, the air on the bonding surface is not completely pushed out, leaving an air layer, and the pressure is high. It becomes uneven and excess adhesive remains without being pushed out.
There was a problem in that the thickness of the adhesive layer was uneven. If an air layer remains on the adhesive surface, the air layer may expand during transport under the heat of lighting equipment used in showcases, etc. or under the scorching sun, and the decorative board may crack or peel. . Furthermore, if the adhesive is stuck with excess adhesive remaining, cracks will occur in the adhesive later, which will reduce the bonding strength and cause the board to warp or peel.

[Means for Solving the Problems] The present invention has been made in view of the above problems, and its purpose is to provide a plywood crimping method that improves work efficiency and has an extremely low defect rate. +l) In a method of manufacturing plywood by gluing together a plurality of boards of different or the same type, an adhesive is applied to the adhesion surface of the plurality of boards, and each (2) A method for crimping plywood, etc., characterized in that, after temporarily pasting, the temporarily pasted board material is inserted between pressure rollers consisting of a driving roller and a driven roller, and the board material is rolled and crimped. This is a crimping method for plywood, etc., characterized in that both sides are crimped by a pair of left and right side rollers vertically disposed close to the crimping roller.

[Effect]

According to the crimping method having the above configuration, the temporarily bonded plywood is held between both pressure rollers and is finally crimped while being rolled and pressed.

During this pressure bonding, air remaining on the bonding surface and excess adhesive are sequentially pushed out in one direction (opposite to the direction of movement).

Further, by providing side rollers, it becomes possible to simultaneously press the four sides (top, bottom, left and right).

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

FIG. 1 is a perspective view showing the crimping method of the present invention, and FIG. 2 is a side view of the same. In FIG. 1, reference numeral 1 denotes a main drive roller that is rotationally driven by a motor (not shown).A driven roller 2 is vertically disposed above the main drive roller 1, and a driving force does not directly act on the driven roller 2. It is a so-called idle roller that rotates when it comes into contact with the roller 1 or when the plywood 3 is inserted. In addition, the driven roller 2 has a required lift height set so that it can move up and down in accordance with the thickness of the plywood 3, and also presses the fixed main drive roller 1 below with a constant pressure to properly move the plywood 3. It is designed to be pressed.

The material for the outer peripheral edges of both rollers 1 and 2 is preferably a rubber or resin material with a low slip ratio. Synthetic rubber 5.5 is fixed to the outer periphery of .4 by baking. In addition, unevenness 5A is formed on the peripheral surface on the side of the driving roller 1 to prevent slipping.

In order to press the plywood 3 with the pressure roller configured as above, first apply adhesive to the adhesive surface of the core 6, then place a decorative board 7 such as Decora and temporarily adhere it as shown in the figure. wear it. When inserted between both rollers 1 and 2, the plywood 3 is slowly fed as shown by the arrow by the driving force of the driving roller 1, as shown in FIG. be done. During this crimping, air and excess adhesive mixed on the bonding surface are sequentially pushed out to the right (in the opposite direction to the feeding direction) by the upper and lower rollers 1 and 2, thus improving the adhesion between the plates. increases, and the bonding force becomes stronger.

By the way, depending on the use of the plywood, it may be necessary to attach a decorative board such as Decora to the side surfaces and the bottom surface in addition to the top surface, but in this case, this can be done at once using the following method. That is, as shown in FIGS. 3 and 4, a pair of left and right side rollers 8, 8 are installed vertically at the front close to the upper and lower pressure rollers 1, 2, and these rollers 8, 8 are attached to the drive roller 1. It is set to be driven at the same speed as the rotational speed, and when crimping, first apply adhesive to the upper and lower, left and right adhesion surfaces of the core 10, and then apply the adhesive to the decorative plates 11, 11° 12.12.
Attach temporarily. Next, move the plywood 9 in this state to the side roller 8.
. Then, as shown in Fig. 4, all four sides of the plywood 9, including the top and bottom surfaces, as well as the left and right sides, are pressed together at the same time, and air and excess adhesive mixed on the bonded surface are sequentially pushed out to the right, resulting in a high degree of adhesion. Plywood can be manufactured.

The side rollers 8, 8 are movable in an arc in the horizontal direction so as to correspond to the width of the plate, and their pressing force does not change even if the width of the plate changes.

Further, in the above embodiment, the pressure roller 1.2 is arranged so that its rotational axis is vertically aligned, but the arrangement is not limited to this, for example, it may be arranged as shown in FIG. It's okay. In other words, the driving roller 1 on the driving side
The phase of the rotating shaft 16 of the driven roller 15 is slightly shifted with respect to the rotating shaft 14 of No. 3, and the guide roller 18 of the plywood 17 is
are arranged in parallel. This reduces the axial load during pressurization, which is advantageous when crimping with stronger pressure is desired.

In addition, according to the crimping method of the present invention, in addition to crimping a decorative board to a core as described above, metals and rubber can also be crimped.

Of course, it can also be applied as a crimping method for urethane, etc.

〔Effect of the invention〕

As is clear from the above explanation, the following effects can be obtained according to the present invention.

(11) Since air and excess adhesive can be completely extruded from the adhesive surface of the plywood, it is possible to prevent cracks and peeling phenomena caused by expansion of air after pasting, and the defective rate is reduced.

(2) There are no individual differences in the finished product, and the labor burden on workers is reduced, labor is saved, work efficiency is improved, and costs are reduced.

(3) It is also possible to crimp all four sides (top, bottom, left and right) at once, greatly improving work efficiency.

[Brief explanation of the drawing]

The drawings relate to the present invention; FIG. 1 is a perspective view showing a method of crimping plywood using a pressure roller, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a perspective view showing another embodiment of the crimping method. FIG. 4 is a side view of FIG. 3, and FIG. 5 is another embodiment showing the arrangement of the pressure roller. 1.13... Drive roller 2,15... Driven roller 3, 9.17... Plywood 5... Synthetic rubber 6.10... Thick core 7, 11.12...
・Decorative board 18...Guide roller

Claims (2)

[Claims] (1) In a method of manufacturing plywood by gluing together a plurality of boards of different or the same type, after applying adhesive to the adhering surfaces of the plurality of boards and temporarily pasting each one, the driving roller is A crimping method for plywood, etc., characterized in that the temporarily bonded plate material is inserted between crimping rollers consisting of driven rollers and crimped by rolling. (2) Both sides of the plate material are crimped by a pair of left and right side rollers that are vertically disposed close to the crimping roller. Construction method.