JPH0218035A - Manufacturing method of honeycomb construction body - Google Patents

Abstract

PURPOSE:To prevent the dislocation of an adhesive agent applying position, and make a high density in narrowing the applying intervals, and minimize the cross-s7ectional configuration by applying an adhesive agent on the surface of a material sheet in use of a screen arranged with an adhesive agent penetration film at extremely fine pitches and equal intervals. CONSTITUTION:Material sheets delivered by a roller 3 are disposed on an adhesive agent applying bed plate 4, and a first screen frame 5 is put on the sheet surface, and then an adhesive agent is applied between at predetermined pitches and equal distances in a rectilinear condition. The material sheet 1 applied with an adhesive agent is delivered from the adhesive agent applying bed plate 4 to a sheet receiver 10. Subsequently, a next material sheet is delivered onto the adhesive agent applying bed plate 4 by the roller 3, and a second screen frame 11 is put on the surface of the material sheet, and then an adhesive agent is applied thereon in the form of being shifted at a half pitch to the pitch of the screen frame 5 at an equal distances in a rectilinear condition. In this manner, the material sheet 1 applied with an adhesive agent is delivered from the adhesive agent applying bed plate 4 to the sheet receiver 10, and laminated with the former material sheet. Respective sheets overlaying-adhered in this way are expanded into required dimensions, and made into a honeycomb construction body 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a honeycomb structure, particularly a high-density honeycomb structure.

[Prior Art] The conventional method for manufacturing a honeycomb structure is to apply adhesive in lines along the width direction at equal intervals in the longitudinal direction on the surface of a long material sheet that is fed in the horizontal direction, and to apply adhesive to the surface of the material sheet. A first mark is attached to one end, and a second mark is attached to the other end of the material sheet, shifted from the first mark by a half pitch of the adhesive application interval, and the material sheet is sent. When the roll has finished rotating the required number of times, the feed roll stops and shears the material sheet in the width direction via a photoelectric detector that detects the first mark, and the feed roll rotates again the required number of times. When the paper is finished, the feed roll similarly stops and shears the material sheet in the width direction via a photoelectric detector that detects the second mark, and each sheet that is successively sheared is stacked. (See Japanese Patent Publication No. 56-30184).

[Problems to be Solved by the Invention] In this conventional manufacturing method, a honeycomb structure is manufactured continuously and the length in the ribbon direction can be freely obtained. It had such problems.

a. Since the adhesive is applied using an adhesive coating roll having a large number of protrusions on the surface, the adhesive may protrude and the adhesive application position may shift.

51 Due to strength considerations, the protrusions on the surface of the adhesive application roll cannot be made thinner than necessary, so the interval between the adhesive applications cannot be made very narrow.

C1 For this reason, a high-density honeycomb structure cannot be manufactured.

d. [So, the buckling strength of the honeycomb structure is low, and it cannot be used for members that require high strength.

[Means for Solving the Problems] The present invention aims to solve the various problems described above and provide a method for manufacturing a high-density honeycomb structure.

In order to achieve this objective, the method for manufacturing a honeycomb structure according to the present invention involves applying a first screen frame to the surface of one material sheet cut to a predetermined size, and applying adhesive in straight lines at equal intervals at a predetermined pitch. A process of applying adhesive in a straight line at equal intervals by applying a second screen frame to the surface of the other material sheet and shifting the adhesive by a half pitch from the above pitch, and laminating each of the above material sheets alternately. It consists of a step of polymerizing and adhering each material sheet, and a step of expanding it to a required size after polymerizing and adhering each material sheet.

Furthermore, if necessary, pressure or heat can be applied to ensure the adhesion of the sheets when the material sheets are alternately laminated and polymerized and bonded.

[Function] The method for manufacturing a honeycomb structure of the present invention uses a screen frame in which adhesive-permeable films are arranged at even intervals at extremely fine pitches to apply an adhesive to the surface of a material sheet. The adhesive will not protrude or the adhesive application position will shift.

Furthermore, since the interval between adhesive applications can be made very narrow, it is possible to manufacture a honeycomb structure with extremely high density, that is, a honeycomb structure with a small cross-sectional shape of honeycomb cells.

Furthermore, it is also possible to construct a honeycomb sandwich panel by sandwiching the honeycomb structure produced in this manner between panels.

[Example] An apparatus for carrying out the method for manufacturing a honeycomb structure of the present invention will be described in detail below with reference to the drawings.

Referring to FIG. 1, a large number of material sheets 1 cut into predetermined dimensions are stacked on a stacker 2. As shown in FIG.

A feed roller 3 is arranged above the flff table 2 to feed out the material sheets one by one.

An adhesive application table 4 is placed in series with the mounting table 2, and a screen frame 5 is placed above it. This screen frame is
The structure is the same as that used in the screen printing method, but the present invention differs in that an adhesive is used instead of ink. As shown in FIG. 2, this screen frame 5 is made by stretching a cloth 6 made of silk, Tetoron, nylon, etc. onto a wooden frame, an aluminum frame 7, etc., and the cloth 6 is made of cloth 6 made of silk, Tetoron, nylon, etc. stretched over a wooden frame, an aluminum frame 7, etc. A large number of linear slits 8 are provided through which the adhesive is applied by a doctor 9 onto the material sheet. The slits of the second screen frame 11 are provided to be shifted by a half pitch from the pitch of the slits 8 of the screen frame 5.

The material sheet 1 sent out by the roller is placed on an adhesive application table 4, and a first screen frame 5 is placed on the surface of the sheet.
is applied, and the adhesive is applied linearly at regular intervals at a predetermined pitch. The material sheet 1 coated with adhesive is
The adhesive is delivered from the adhesive application table 4 to the sheet receiver 10. Subsequently, the next sheet of material is sent onto the adhesive application table 4 by the feed roller 3, and the second screen frame 11 is applied to the surface of this sheet of material, and the pitch of the screen frame 5 is equal to half the pitch of the second screen frame 11. Adhesive is applied in a straight line at evenly spaced intervals. The material sheet 1 coated with adhesive in this manner is sent from the adhesive application table 4 to the sheet receiver 10, and is laminated with the previous material sheet.

In this way, the material sheets are alternately stacked and bonded together within the sheet receiver 10. As shown in FIG. 3, in the stacked material sheets 1, the application position of the adhesive 12 is shifted by a half pitch for each sheet. In order to promote adhesion, it is desirable to press the material sheets stacked in the sheet receiver 10 from above using a press member 13, and if necessary, apply heat to promote adhesion and increase adhesive strength. can do.

Each of the material sheets polymerized and bonded in this manner is expanded to a required size to form a honeycomb structure 15.

If paper, especially kraft paper, Japanese paper, etc. is used as the material sheet, and glue is used as the adhesive, it can be used as a material for a humidity-retaining mask.

The honeycomb structure can also be manufactured by using a sheet of plastic, aluminum, etc. as the material sheet and a plastic or rubber adhesive.

Furthermore, the honeycomb structure 15 left in this way,
The honeycomb sandwich panel 17 can be constructed by sandwiching the honeycomb sandwich panel 16 between the panels 16 via an adhesive layer.

[Effects of the Invention] Since the method for manufacturing a honeycomb jFr4 structure according to the present invention has an extremely simple configuration, it can be performed with fewer steps than conventional methods.

Further, since the adhesive is applied using the screen frame, there is no risk of the adhesive protruding or the adhesive application position being shifted.

Furthermore, since the interval between adhesive applications can be made very narrow, a honeycomb structure with extremely high density, that is, a honeycomb structure with a small cross-sectional shape of honeycomb cells, can be manufactured.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the manufacturing process of a honeycomb structure according to the present invention, FIG. 2 is a perspective view of a screen frame used in the method of the present invention, and FIG. 3 is a cross-sectional view of a honeycomb laminate produced according to the present invention. FIG. 4 is a perspective view of a honeycomb structure manufactured by the present invention expanded to required dimensions, and FIG. 5 is a perspective view of a honeycomb sandwich panel constructed using the honeycomb structure manufactured by the method of the present invention. Each is shown below. 1... Material sheet, 3... Feed roller, 5.11.
... Screen frame, 9 ... Doctor, 10 ... Sheet holder, 15 ... Honeycomb structure, 16 ... Panel,
17...Honeycomb sand germination panel Fig. 4 Fig. 5

Claims (1)

[Claims] 1. On the surface of one material sheet cut to a predetermined size, a first
A process of applying adhesive in a straight line at equal intervals at a predetermined pitch by applying a second screen frame to the surface of the other material sheet and gluing it at equal intervals by shifting it by a half pitch from the above pitch. The process of applying the agent in a straight line,
a step of alternately laminating and polymerizing the respective material sheets;
A method for manufacturing a honeycomb structure comprising the steps of polymerizing and bonding each material sheet and then expanding it to the required dimensions. 2. A method for producing a honeycomb sandwich panel by sandwiching the honeycomb structure produced by the method according to claim 1 between panels with an adhesive layer interposed therebetween.