JPS5936433Y2 - Material crimping device in honeycomb winding machine - Google Patents

Description

[Detailed description of the invention] This invention is based on the following method: When winding an adhesive Nicum strip material onto a square drum, the Nicum strip material and the square drum are constantly pressure-bonded with the required pressure. This article relates to a material crimping device for a two-cam winding machine.

Conventional materials for honeycomb cores include paper, fibers, metal foils, cloth-like materials, and flexible plastic films. Various methods for manufacturing honeycomb cores have been proposed, and none of them have been put to practical use. Ta.

・One of the manufacturing methods for NICAM core is to apply an appropriate adhesive. ・A NICAM strip-shaped material is wound onto a square drum, and when it reaches a predetermined thickness, it is cut to a predetermined width and expanded. Although there is a method (Japanese Patent Publication No. 37-6983), this method was used when paper was used as the material.

That is, when paper is used as the material, vinyl acetate emulsion is mainly used as the adhesive, which is wound onto a square drum to a predetermined thickness, the laminate is cut and removed, and the laminate is pressed. The abutting surfaces were completely adhered.

However, when plastic film is used as a nicam material, the adhesive is an organic solvent and dries very quickly. There is a risk that the dried portion will result in poor adhesion even if pressed after removal, and recovery of adhesive properties cannot be expected even with hot pressing.

Therefore, if the amount of adhesive is increased to slow down the drying speed, the adhesive applied area will be crushed during winding, and the adhesive application width will become unnecessarily wide, especially at the corners of the square drum. The shape of the nicomb 16 was irregular as shown in 16a (if Fig. 3 was considered normal, it would be as shown in Fig. 4), resulting in a defective product.

However, this idea uses a pressure roller that is pulled downward by a spring and is attached to the square drum.
Since the material of the nicam strip was always crimped with a predetermined pressure, even when using the minimum amount of adhesive, it was possible to completely bond the material before it dried.

That is, to explain this invention with reference to the embodiments shown in FIG. 1 and FIG.
is applied in a linear manner and in a staggered manner upward and downward, and after both films are overlapped at the position of the guide roller 4, they are wound onto a hexagonal drum 5.

The hexagonal drum 5 is installed horizontally on the machine frame 6 so as to be freely rotatable, and a guide rod γ+7a is installed on the machine frame 6.
A bearing 9.9ae of the pressure roller 8 is loosely fitted into the bearing 7a so that it can rise and fall freely, and a spring 11.11a is stretched between the bearing 9, 9a and a pin 10.10a fixed to the lower part of the guide rod 7, 7a. 9 and 9a are pulled downward, and 12 in the figure is a gear fixed to the shaft 13 of the hexagonal drum 5.

In the above embodiment, when the hexagonal drum 5 rotates in the direction of arrow 14, the pressure roller 8 automatically moves up and down as shown by arrow 15 in accordance with the change in the contact position.

It is constantly crimped to the Nicum strip material with moderate pressure.

Therefore, if the elastic force of the springs 11, 11a is appropriately designed, the pressure roller 8 will press the plastic films 1, 2 against the outer wall of the hexagonal drum 5 with an appropriate pressure, and the adjacent plastic films will be free from adhesive. Glue completely before drying.

In the above embodiment, the spring tensioning pin 10,
Although the pin 10a is fixed to the lower part of the guide rod 7, 7a, the position of the pin is not limited as long as the bearing 9, 9a can be pulled downward by a spring. good.

Since the pressure roller is layered with an elastic material such as rubber or foamed plastic on the outside, it deforms in response to uneven winding thickness due to the thickness of the honeycomb strip material, resulting in a high quality product with a uniform pressure force. Can you manufacture products?

That is, according to this invention, even if the pressure position of the pressure roller constantly changes due to the rotation of the square drum (not necessarily limited to a hexagonal drum), the change in pressure position can be followed with almost the same pressure. Even when a quick-drying adhesive is used, it is possible to prevent defective adhesion, and it is also effective in preventing deterioration in product quality or yield due to uneven adhesion areas. .

Furthermore, although it has been difficult to manufacture plastic honeycombs by this manufacturing method in the past, this invention has the effect of making it easier.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of this invention, Fig. 2 is a partially omitted plan view, Fig. 3 is a partial plan view of a normal No. FIG. 5 is a partial plan view of the honeycomb, and FIG. 5 is a partial side view of the honeycomb strip material coated with adhesive. 1.2...Plastic film, 3...Adhesive,
4...Guide roller, 5...Hexagonal drum, 6...
Machine frame, 7.7a...Guide rod, 8...Crimping roller,
9, 9a...Bearing, 10.10a...Pin, 11
．． 11a...Spring, 12...Gear, 13.
...Hexagonal drum shaft, 14.15...Arrow, 16.1
6a...Nicam.

Claims (1)

[Claims for Utility Model Registration] 1. In a honeycomb winding machine that applies adhesive to a honeycomb strip material in a predetermined line and winds it around a square drum while applying pressure with a pressure roller, At the top of the machine frame on which the crimping rollers are installed, guide rods are installed in which the bearings of the pressure rollers are loosely fitted so that they can be raised and lowered, and
A material crimping device in a Nikam winding machine, characterized in that the bearing is connected to a spring that pulls it downward. 2. The pressure roller has a layer of rubber or plastic foam on the outside as described in Claim 1 of the Utility Model Registration...
Material crimping device in a two-cam winder.