JPS6367103A - Continuous lateral peeling bonding method - Google Patents

Abstract

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

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a continuous cross-seam gluing method used, for example, in the production of piano soundboards. (Prior Art) Conventionally, in order to make a board a having a thickness of 20 to 30 mm or less, having a shape as shown by the chain line in Fig. 4, and having wood grains in the direction of the arrow,
Apply adhesive to the sides of boards of different widths and lengths to form base C.
Generally, a frame with a presser bar is placed on top of the board, and the frame is pressed downward and pressure is applied using a fastener in the direction of the arrow, being careful to apply pressure uniformly over the entire board. (Problem to be solved by the invention) However, in the above method, when applying pressure to the plates b...b'ft, the pressure applied from above the plates b...b placed on the base C is small, so The difference in level between the matching boards becomes thicker. Therefore, since it is necessary to eliminate the level difference by sander grinding or the like after side-splitting bonding, the thickness of each plate becomes thicker than the plate thickness of plate a, resulting in the disadvantage that the yield is significantly reduced. If a press device is used to increase the pressure applied from above to plate b...b, the level difference can be reduced, but the thickness of the fastener must be made thinner than the thickness of the plate. Therefore, it is difficult to obtain such a fastener. In addition, the above-mentioned method has the disadvantage that it is inefficient because it takes time and effort to place the board on the base C and attach fasteners every time the board a is made. It is an object of the present invention to eliminate these conventional disadvantages. (Means for Solving the Problems) In order to achieve the above object, the present invention provides a base plate or The plates are arranged and placed on a conveying member such as a belt, the conveying member is transferred to insert a plurality of plates from a group of plates into a press device, and the press device presses the plurality of plates. The steps between adjacent plates are eliminated, and the plurality of pressurized plates are fixed on one side outside the press machine, and from the other side outside the press machine, the plates are horizontally moved through the plates outside the press machine. Pressure is applied to completely bond the plates to each other, and the conveying device is transferred again.
Similar to the previous method, the method is characterized in that a plurality of boards are sequentially pressurized to bond each group of boards together by side-splitting. (Embodiment) An embodiment of the present invention will be described with reference to the accompanying drawings. In Fig. 1, (1) is a conveying member made of, for example, plywood, a belt, etc., and a final destination board, such as a piano, is placed on the conveying member (1). Board for making multiple soundboards (21) helmet, C
22)..., each group of boards (21) configuring each soundboard.
..., (22) ... glue on the side of each (not shown)
Coat and place in alignment. Here is the board for each group (21)...
・. The number of (22)... is set to 6, but in reality it is more than this. Next, as shown in the first diagram, two of the first group of plates (21) are inserted into the press device (3), and the press device (3) is operated to press the two plates (21). Apply pressure from above as shown by the arrow to eliminate the level difference between adjacent plates (21). After that, the pressure from above is reduced to such an extent that a lateral force can be applied and the step does not occur. Next, place a spare board (2 people) outside the press device (3) in front of the group of boards (21), and move the fixing members (4) provided at the top and bottom of this in the direction of the arrow to remove the spare board. (2A)
and fix the two plates (2) in the press device (3).
A pressure member (5) provided above a plate (21) outside the press device (3) connected to 1) is pressed by a mechanism (not shown).
First, it descends as shown by the arrow and presses against the plate (2,), then moves laterally and presses the two plates (2,) in the horizontal direction.
The plates (21) are glued together. After the adhesive has solidified, the fixing member (4) and the pressing member (5) are returned to their original positions, and the conveying member (1) is moved to the press device (21) as shown in the second figure. 3) Transport until it is outside. At the time of this transfer, the same group of two plates (21) are inserted into the press device (3). Thus, the press device (3) is operated again to eliminate the level difference between the two plates (21), and then the fixing member (
4) Move in the direction of the arrow and attach the plate (21) with the fixing member (4).
) at the same time as fixing the two plates.

[2. ] The front side plate (21) of the same group of plates (2,) connected to fc are glued together. In this way, each group of boards (21) constituting each soundboard... (22)..., y'e, by transporting the conveying member (1), the pieces are successively spliced and bonded. Here, the aforementioned bonding pressure is applied to the plates (21), (22) and
The value shall be constant per unit adhesive area, and the value shall be such that the wood on the adhesive surface will not be destroyed and the adhesive will not be insufficient. Therefore, when the bonding area between the plates is wide (the plates are long), the pressure of the pressure member (5) is increased, and the bonding area is narrow (the plates are long).
If the plate is short), the pressure of the pressure member (5) should be weakened. Therefore, the pressure member (5) is configured to be able to freely vary the pressure. In the above-described embodiment, the pressure member (5) was configured to be able to move in the vertical direction and in the lateral direction, but it may also be configured to move from diagonally upward to the left to diagonally downward to the right, or As shown in the third figure, it is movable in the vertical direction and has a plate (
21) It may also be a roller that rotates while being pressed against it in the direction of the arrow (2°) or the like. (Effect of the invention) As is clear from the above description, according to the present invention,
Compared to conventional methods, side-splitting bonding can be performed more efficiently, and the method has advantages such as being able to perform the tightening for side-splitting bonding without using any special tools.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams for explaining the method of one embodiment of the present invention, Figure 3 is a similar diagram when another pressure member is used, and Figure 4 is a diagram for explaining the method according to an embodiment of the present invention. FIG. 3 is an explanatory diagram of a horizontal strip adhesion method. (1) ... Conveyance member (21) (22) Village ψ・
・Plate (3)...Press device (4)...Fixing member (5)...Pressure member

Claims (1)

[Claims] Multiple groups of boards to be horizontally glued for each group are coated with adhesive on the side surfaces of each board, aligned and placed on a conveying member such as a base plate or belt, and the conveying member is transferred to form a group. A plurality of plates among the plates are inserted into a press device, the plurality of plates are pressurized by the press device to eliminate the level difference between adjacent plates, and the plurality of pressurized plates are pressed into the press. The plates are fixed on one side outside the press machine and laterally pressed from the other side through the plate outside the press machine to adhere the plates to each other, and the conveying machine is transferred again. A continuous cross-seam gluing method characterized by applying pressure to the boards one after another and cross-separate each group of boards.