JPH0450898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of layering material sheet materials in a method of manufacturing a honeycomb core.

More specifically, the present invention relates to a method of layering raw material sheets for easily and reliably forming a honeycomb core with a uniform cell shape.

A step of applying an adhesive to at least one surface of a conventional elongated material sheet material along its width direction or longitudinal direction in a line shape at a predetermined pitch and a predetermined width using an appropriate adhesive application means; The process of cutting the long material sheet material coated with adhesive into predetermined lengths along the width direction from a predetermined position as a reference point, and the step of cutting the predetermined number of cut unit material sheet materials in a 1/2-pitch pattern by applying adhesive alternately. A process of layering the honeycombs so that they are glued at different positions, and then cutting a predetermined number of unit material sheet materials glued in layers in a block shape into predetermined lengths in a direction perpendicular to the adhesive to form an unexpanded honeycomb. The layering method in the honeycomb core manufacturing method, which consists of a step of forming a core and a step of expanding the unexpanded honeycomb core, is, for example, using a long material sheet material 1 of standard width in the ribbon direction (orthogonal to the stretching direction). In order to form a long honeycomb core (direction in which the adhesive is applied), adhesives 2, 2, etc. are applied at predetermined pitches P along the width direction of the long material sheet material 1 (see Fig. 2). , for example, every predetermined length L along the width direction of the long material sheet material 1 at every position of an integral multiple of the application pitch P + 1/2 P of the adhesives 2, 2, etc., starting from one side edge of the adhesive 2. The unit material sheet material 3 is formed by first cutting the unit material sheet material 3, and the unit material sheet materials 3, 3... are bonded by the adhesive 2, 2... alternately at positions shifted by 1/2 pitch. Since the raw material sheets 3, 3... are layered with one side end and the cut side end, in order to form a honeycomb core with a uniform cell shape, it is necessary to accurately detect the cutting position, so a detection device, The problem was that the cutting equipment and the like were precise and complicated, making the manufacturing equipment extremely expensive.

In addition, in order to form a honeycomb core having a standard length in the ribbon direction, adhesives 2, 2, etc. are applied at predetermined pitches P along the longitudinal direction of the long material sheet material 1 ( (see Figure 4), accuracy is not required to detect the cutting position for forming the unit material sheet materials 3, 3..., but the adhesives 2, 2...
It is extremely troublesome to alternately shift the positions of the layers by 1/2P and layer them one on top of the other, which has the drawback of requiring a large number of man-hours.

Therefore, as shown in FIGS. 5a and 5b, the roll body A
Grooves B, B... having a length equal to n of the circumference of 1.
By rotating the coating roll A, the long material sheet material 1 is fed in contact with the coating roll A. There are grooves B, B...
The fifth adhesive is filled in by appropriate means.
As shown in FIG. b, along the longitudinal direction, the adhesives 2, 2, . According to this method, the detection of the cutting position does not require particular precision, and overlapping can be performed almost accurately and easily, but the coating roll A is expensive because it requires precision. The disadvantage of this method is that it is necessary to prepare various types of honeycomb cores for each cell size.

The present invention has been made in view of the above-mentioned circumstances, and in the step of layering material sheet materials in a honeycomb core manufacturing method in which a honeycomb core is formed through the above-mentioned steps, a long material sheet material coated with an adhesive is placed in a predetermined manner. Before the step of cutting into lengths and forming unit material sheet materials, at least one of the edges of both sides of each unit material sheet material where the end surface of the adhesive is exposed is placed at a predetermined position as a base point. A hole of an appropriate shape for positioning or a cutout such as a cutout is formed at every even numbered pitch of the adhesive application pitch, and a predetermined number of each of the unit material sheets is formed with the same cross-sectional shape as the cutout. and a plurality of positioning rods vertically disposed in a straight line at intervals of an integral multiple of 1/2 pitch of the adhesive application pitch, each of the unit material sheet materials By engaging the missing parts formed in the positional relationship in which the rods are adhered at positions alternately shifted by 1/2 pitch to the rods and layering them, a long sheet material of a standard width can be used to achieve the desired purpose. In order to form a honeycomb core suitable for A multilayer method that makes detection easy and allows precise positioning during multilayering, and also enables the formation of honeycomb cores with uniform cell shapes without the need for expensive special coating rolls. The purpose is to provide Hereinafter, the present invention will be explained based on embodiments shown in the drawings.

1 to 3 show an example in which adhesive is applied along the width direction of a long material sheet material. In the figures, 1 is a long material sheet material fed in the direction of the arrow; The length material sheet material 1 has a plurality of grooves 4a, 4a of a predetermined width formed along the axial direction of the applicator roll 4 at positions where the circumferential length is divided into n equal parts.
The circumferential length of the applicator roll 4 is applied along the width direction of the long material sheet material 1 by an adhesive applicator 7 consisting of an applicator roll 4 equipped with..., an appropriate adhesive supply device 5, and a back-up roll 6. 1 pitch P of n equal parts
Adhesives 2, 2, . . . with a predetermined width are applied in a linear manner. Reference numeral 8 denotes a cutout forming device for forming cutout-like cutout portions 9, 9... on one edge of the long material sheet material 1, and this cutout portion forming device 8 is configured as follows . That is, convex blades 11, 11... having a circular cross section are placed at predetermined positions on the roll body 10a having the same outer diameter as the applicator roll 4 with a circumferential length of 1/2n.
Male roll 1 for forming missing parts provided at equal positions
0, and convex blades 11,1 with the same diameter as this male roll 10.
1... and a female roll 12 provided with a concave blade into which a convex blade 11 fits in a positional relationship corresponding to that of the coating roll 4.
Convex blades 11, 1 are located at a desired distance from the axis of
1... and concave blades 13, 13... are provided so as to mesh with each other, and the applicator roll 4 is provided through an appropriate movement mechanism.
They rotate in synchronization with the rotation of the elongated material sheet material 1, and are arranged in a positional relationship that forms holes or semicircular missing portions 9, 9, . . . on one side edge of the long material sheet material 1. (In this embodiment, the distance between the axes of the coating roll 4 and the rolls 10 and 12 at the missing portion forming position 8 is arranged in a positional relationship that is an integral multiple of n equal parts of the circumferential length,
Both devices 7 and 8 are provided so that the center of the missing portion 9 and the center of the linear adhesive 2 coincide, and the centers of the convex blade 11 and the concave blade 13 having circular cross sections are aligned with the side of the long material sheet material 1. Because it is arranged in a positional relationship that matches the end, the center of the linear adhesive 2, 2... and the adhesive 2
Semicircular missing portions 9, 9, . . . having their centers at 1/2 of the coating pitch P are formed (see FIG. 2). Next, with a predetermined position of this long sheet material 1 as a base point (in the example, the side edge of the applied adhesive 2), an integral multiple of the adhesive application pitch P + 1/2P
unit material sheet material 3 by cutting it into predetermined length l of
3..., and form a predetermined number of unit material sheet materials 3, 3... into a plurality of pieces having a cross-sectional shape that matches the cross-sectional shape of the missing portions 9, 9... within the length range of the unit material sheet material 3. (Two in the embodiment) positioning rods 14, 14 are placed at the adhesive application pitch P.
On the multilayer device 16 vertically installed on the base plate 15 with an interval of an integral multiple of The missing parts 9, 9 formed at positions shifted by 1/2P from the adhesive application pitch P (in the example, the adjacent missing parts formed) are alternately connected to the rod 1.
A predetermined number of unit sheet materials 3, 3... are accurately and alternately layered at positions shifted by 1/2 of the application pitch P by engaging and bonding the adhesives 2, 2... with the adhesives 4, 14. (Figure 3).

What is shown in FIG. 4 is an example in which adhesives 2, 2, etc. are applied in a linear manner at a predetermined pitch P along the longitudinal direction of the long material sheet material 1 using an appropriate adhesive application means (not shown). In this embodiment, a cut unit is attached to a blade portion (not shown) of a cutting device that cuts a long material sheet material 1 coated with adhesives 2, 2, etc. into predetermined lengths. Cutouts 9, 9, etc. are formed in the cut portion of the material sheet material 3 at a pitch that is an even number of the adhesive application pitch P (fourth
(See figure) In order to form the missing parts 9, 9, . A predetermined number of cut unit material sheets 3, 3... are attached to positioning rods 14, 14 having the same cross-sectional shape as the cutout 9, which is vertically disposed at an interval that is an integral multiple of the adhesive application pitch P. On the multi-layer device 16 equipped with the above, the gaps formed at positions shifted by 1/2P of the adhesive application pitch P so that each unit material sheet material 3, 3... are adhered alternately at positions shifted by 1/2P. By alternately engaging and gluing the portions 9 to the rods 14, 14, a predetermined number of unit material sheets 3, 3... are precisely and alternately coated with the adhesive 2, 2... at a rate of 1/2 of the application pitch P. Layered in different positions.

As explained above, according to the layering method of raw material sheets in the honeycomb core manufacturing method according to the present invention, the long raw material sheets are bonded in a striped manner at a predetermined pitch along the width direction or the longitudinal direction. At least one of the edges on both sides where the adhesive end surface of each material sheet material is formed by applying an adhesive and cutting the long material sheet material into predetermined lengths from a predetermined position as a base point. In the process before cutting, cut out parts of an appropriate shape formed at every even-numbered pitch of the adhesive coating pitch from a predetermined position as a base point are cut out by an integer number of 1/2 pitch of the adhesive coating cloth pitch. In a multi-layered section equipped with a positioning rod having the same cross-sectional shape as a plurality of vertically disposed vertically spaced parts at double intervals, the adhesive applied to each unit material sheet material is alternately applied 1/2 pitch at a time. By layering each material sheet while alternately engaging the positioning rod with the missing parts formed in each material sheet in such a positional relationship that they are glued at shifted positions, each material sheet can be layered accurately and easily. Therefore, in order to form a honeycomb core with a uniform cell shape, there is no need for a precise cutting position detection device that was previously required for accurately layering unit material sheets. , it becomes possible to reduce the number of steps required for layering, and eliminates the need for an adhesive coating method using an expensive special adhesive coating roll, thereby eliminating the drawbacks of conventional layering methods and exhibiting excellent effects.

[Brief explanation of drawings]

1 to 3 show embodiments of the present invention. FIG. 1 is an explanatory diagram showing the relationship between an adhesive applicator and a missing portion forming device, and FIG. FIG. 3 is a perspective explanatory diagram illustrating a layering method of unit material sheet materials in a layered portion; FIG. Figures 5a and 5b are perspective views of main parts showing a conventional special adhesive application roll and a state in which an adhesive is applied to a long material sheet material using this roll, respectively. In the figure, 1 is a long material sheet material, 2 is an adhesive, 3 is a unit material sheet material, 4 is an application roll, 4a is a groove, 5 is an adhesive supply device, 6 is a back-up roll, and 7 is an adhesive application device, 8 is a missing part forming device;
9 is a missing part, 10 is a male roll, 10a is a roll body, 11 is a convex blade, 12 is a female roll, 13 is a concave blade, 14 is a positioning rod, 15 is a base plate, 16
is a multilayer device.

Claims (1)

[Claims] 1. Apply an adhesive to at least one side of the continuously fed long material sheet material along the width direction or longitudinal direction at a predetermined pitch and a predetermined width using an appropriate application means, and then The length material sheet material is cut along the width direction at predetermined lengths from a predetermined position as a starting point, and the adhesive is applied alternately to 1/2 of each of the predetermined number of cut unit material sheet materials.
Layer them so that they are glued at different pitches,
Next, the predetermined number of stacked unit material sheets are cut into predetermined lengths in a direction perpendicular to the adhesive to form an unexpanded honeycomb core, and the unexpanded honeycomb core is expanded. In the layering step in the honeycomb core manufacturing method, before the step of cutting the long material sheet material into predetermined lengths to form unit material sheet materials, the end surface of the adhesive in each unit material sheet material is exposed. holes of an appropriate shape for positioning at least one of the edges of both sides of the adhesive are positioned at every even numbered pitch of the adhesive application pitch, starting from a predetermined position;
Alternatively, a missing part such as a notch is formed, and a predetermined number of each of the unit material sheet materials has the same cross-sectional shape as the missing part and is 1/1/2 of the adhesive application pitch.
In a layered section provided with a plurality of positioning rods vertically disposed in a straight line at intervals of an integral multiple of 2 pitches, the unit material sheets are adhered alternately at positions shifted by 1/2 pitch. A method for layering material sheets in a method for manufacturing a honeycomb core, characterized in that the cutout portions formed in a positional relationship are engaged with the rods and layered.