KR20090126398A - Urethane Foam Honeycomb - Google Patents

Abstract

The present invention spreads the honeycomb core material in order to produce a honeycomb for urethane foam by applying an adhesive on one side and attaching a non-woven fabric to a honeycomb that ensures uniformly the size of each cell in which urethane is foamed over a large area, such honey It relates to a manufacturing method and a manufacturing apparatus of the comb.

Description

Honeycomb for Urethane Foaming {honeycomb for urethane foaming}

The present invention spreads the honeycomb core material in order to produce a honeycomb for urethane foam, honeycomb coated on one side and attached to a non-woven fabric to secure the size of each cell in which urethane is foamed uniformly over a large area, such honeycomb It relates to a manufacturing method and a manufacturing apparatus of the comb. The honeycomb manufacturing apparatus, in more detail, spreads the honeycomb core material to apply an adhesive, attaches surface papers, and then automatically performs a drying operation.

Existing urethane foam corrugated cardboard (FIG. 4) was bonded after the cardboard was sprayed (spray) and then cut (molding) after molding. Corrugated cardboard uses a saw for cutting because of the thickness of the original cardboard. Therefore, in order to obtain a 7mm thick urethane foam corrugated board, when using a saw blade having a thickness of 2mm, a corrugated cardboard having a thickness of about 10 mm should be used in consideration of the thickness of the saw blade in addition to the saw blade thickness. Of course (see Fig. 4) because of the high consumption of materials, the cardboard cut by sawing has become a hazard to the health of the worker in terms of work environment because the dust floating around the workplace. Honeycomb has been considered as a material to replace such urethane foam corrugated cardboard. Honeycomb can be an alternative to overcome the above problems because it is lighter than corrugated cardboard and can be cut by a knife rather than a saw.

In general, the honeycomb core material (1) required for manufacturing honeycomb boards used for various purposes, such as interior and exterior materials of a building, doors, or interior materials of furniture, may be formed of two rectangular cardboards, as shown in FIG. When the surface of the cardboard (2) (2 ') is applied to each side of the adhesive (3) (3') to be applied at a predetermined interval (t) and a predetermined width (l) are staggered so that the application position is placed in the middle of each other Then it was cut to the required area (m) as shown in Figure 2 to make several bees.

And, when manufacturing the honeycomb board with such a honeycomb core material (1) by pulling a plurality of overlapping cardboard (2) (2 ') and spreading the gap by each of the adhesive (3) (3') applied to each other. Since the gaps between the attached parts 4 are bent and open as shown in FIG. 3, a plurality of honeycomb-shaped spaces 5 are formed. After this, the adhesive is applied to both sides of the cardboard and the surface is opened. Paper was attached to each other. However, if the surface paper is bonded to both sides, the urethane cannot be foamed to the space part.

On the other hand, the expanded honeycomb core material without urethane foam corrugated cardboard and upper and lower surface paper is similar in shape except that the thickness of the material (cardboard) is different, but honeycomb is not fixed in shape due to the shrinkage force of the material. There is a problem that can not be foamed.

The object of the present invention is to replace the corrugated cardboard as a structure for urethane foam in view of the above-mentioned conventional problems, to ensure a uniform space portion of the honeycomb having a shrinking property, but to enable urethane foaming, such honeycomb To provide a method and a manufacturing apparatus of the.

      The present invention relates to a honeycomb for urethane foam having a configuration in which a nonwoven fabric is bonded to a cross section of a honeycomb core material.

By adopting such a structure, the urethane can be sprayed on one side of the honeycomb by spraying the urethane into the back side of the surface on which the urethane is sprayed while maintaining the space of the honeycomb so that the space of the honeycomb is uniform. By adhering the nonwoven fabric to one side of the upper or lower cross section of the honeycomb, the nonwoven fabric with the minimum weight is used to maintain the lightness characteristic of the honeycomb.

In addition, the present invention to manufacture such a honeycomb,

Spreading each cell of the honeycomb core material to have the same size; and

Applying an adhesive to the cross section of the honeycomb core having an upper and lower surfaces; and

It relates to a method for producing a honeycomb for urethane foam comprising a; bonding the nonwoven fabric to the cross-section of the honeycomb core material to which the adhesive is applied.

In addition, the present invention to manufacture a honeycomb for urethane foam non-woven fabric bonded to one side of the honeycomb core material,

Two pairs of rollers for pulling the honeycomb core material out of the stacking plate for loading the honeycomb core material in the folded state, and the movable plate for moving the honeycomb core material backward, so that each cell of the honeycomb core material has a certain size. A honeycomb core material feeder provided;

Non-woven fabric feeder having a hanger for hanging the nonwoven fabric wound in a roll state;

An applicator having an application roller for applying an adhesive to one side of the honeycomb core material;

It relates to a manufacturing apparatus of the urethane foam honeycomb comprising a honeycomb core material from the applicator and an adhesive machine having an upper and lower adhesive rollers for attaching the nonwoven fabric conveyed from the nonwoven fabric feeder.

Conventionally, when manufacturing honeycomb, the work of spreading the honeycomb core material and applying the adhesive on the adhesive surface and attaching the surface paper were performed by using a separate device or manpower. It took a lot of work manpower and time to operate the device, there was a problem that the productivity is greatly reduced, the production cost is significantly increased, as well as the failure rate.

In order to solve these problems, the present invention, the honeycomb core material attached in succession in the unfolding direction is stacked on the loading plate of the gas and then moved along the upper surface of the conveyer and the front of the applicator and the gas to apply the adhesive on one side It provides a honeycomb manufacturing apparatus comprising an adhesive for attaching a non-woven fabric, which is respectively conveyed and supplied through the upper or lower portion of the gas from the feeder of the surface paper installed in the one side to which the adhesive is applied. At this time, if the non-woven fabric is attached to the lower surface, the non-woven fabric serves to fix the honeycomb when the cutter comes down from the top when cutting later.

According to the honeycomb manufacturing apparatus, the honeycomb core can be unfolded in the process of moving the honeycomb core so that the adhesive is evenly applied to the cross-section of the core and the nonwoven fabric is uniformly and firmly attached by the adhesive. Will be.

The present invention also relates to a honeycomb manufacturing apparatus, characterized in that it further comprises a dryer for drying the adhesive of the honeycomb core material is the adhesive step is completed.

The dryer is installed at the rear of the adhesive or the dryer accommodated at the front of the adhesive to dry the applied adhesive while passing the honeycomb member with the nonwoven fabric attached to the honeycomb core material to dry and adhere in a short time. It is also preferable to.

After the honeycomb for urethane foam is cut to the required size, foaming is performed on the surface to which the nonwoven fabric is not bonded, and the surface of the urethane that rises above the space of the honeycomb is heated by pressing the metal forming plate up and down immediately after foaming. Make the thickness uniform. At this time, urethane coating is performed on the back surface of the nonwoven fabric in which urethane is not foamed, as the urethane is extruded from the surface on which urethane is foamed.

The honeycomb foamed with urethane has a significantly lighter weight and superior strength compared to the case of using a corrugated cardboard or heavier MDF, which is used by foaming urethane. Examples of such urethane-foamed honeycomb can be used as spare tire cover (see Fig. 11) of a car trunk room, a pallet supporting plate or intermediate plate used for cargo transportation.

The honeycomb according to the present invention consumes much of the material when cutting the corrugated cardboard for urethane foam, and the corrugated paper ground by sawing becomes dust and floats in the workplace, thus improving the health of the worker in terms of working environment. The disadvantages of hazards can be overcome (corrugated cardboard is about 50% material cut, and honeycomb is reduced to almost 0%).

In addition, since the manufacturing process of spreading the honeycomb core material by applying the honeycomb core material and applying the non-woven fabric and drying by attaching the non-woven fabric by the apparatus for manufacturing the honeycomb of the present invention is automatically performed continuously by a single device, the labor force and time as well as the production cost are Productivity is greatly improved, such as a significant reduction.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 5 is a schematic side view of the manufacturing apparatus of the honeycomb according to the embodiment of the present invention, Figure 6 is an enlarged side view by extracting the loading plate and the moving plate in Figure 5, Figure 7 is an excerpt of the moving plate in Figure 5 8 is an enlarged plan view, and FIG. 8 is an enlarged side view taken from the applicator in FIG. 5, and FIG. 9 is an enlarged side view taken from an essential part of the applicator of FIG. 8.

In the apparatus for manufacturing a honeycomb board according to the embodiment of the present invention, a feeder 20 having a hanger 21 for hanging a nonwoven fabric 6 wound in a roll state is provided in front of the base 10, and The stacking plate 11 provided on the front side is stacked to stack a plurality of honeycomb core material (1) attached in succession in the direction of spreading a plurality of suits, and then do not flow down by walking the belt (12).

The loaded honeycomb core material (1) pulls the tip to the rear end from the front end of the upper surface of the moving plate (13) laid directly behind the loading plate (11), and thus a plurality of honeycomb core materials forming the honeycomb core material Between each bonded portion 4, 4 'of the cardboard 2, 2' spreads toward the rear end so that a plurality of honeycomb-shaped spaces 5 are formed.

On the other hand, a pair of guide pieces 13a for guiding the honeycomb core material 1 to be moved so as not to be swayed on either side of the upper surface of the moving plate 13 are provided in parallel with each other.

These guide pieces (13a), when installed on the upper surface of the moving plate 13 is installed so that the gap can be adjusted in consideration of the difference in the size of the left and right width of the honeycomb core material to be processed, for this purpose, the upper surface of the moving plate A plurality of fastening holes 13b were formed on both sides to maintain a predetermined interval in the horizontal direction, so that the bolts 13c were fastened to the corresponding fastening holes through the screw holes formed in the guide pieces, and in the transverse direction instead of the fastening holes. Long holes may be formed long.

When the front end of the honeycomb core material 1, which is opened between the cardboards 2 and 2 ', is guided by the guide piece 13a installed in this way and moved to the rear, the honeycomb cores 1 are sequentially installed at the rear of the moving plate 13. The applicator 40 and adhesive 50 of the adhesive and the feeder 20 provided in front of the base 10 are operated simultaneously.

The applicator 40 is provided with upper and lower application rollers 41 and 41 ', and the lower application rollers are installed so that the adhesive is directly supplied to a certain thickness by the adhesive supply plate 43.

In addition, since one or both of the upper and lower application rollers 41 and 41 ′ are installed to elevate, the space between each other is proportional to the thickness of the honeycomb core material 1 to which the adhesive b is to be applied. To be adjustable.

When the honeycomb core material 1 is moved between the upper and lower coating rollers 41 and 41 'installed in this way, the adhesive is applied to the lower surface according to the rotation of the coating roller and the adhesive 50 is installed at the rear side. Move.

The adhesive machine 50 is provided with the upper and lower adhesive rollers 51 and 51 ', and is attached to the upper and lower parts of the gas from the hangers 21 and 21' of the feeder 20 provided in front of the base 10. The nonwoven fabric 6 transported backward by the plurality of guide rollers 14 and 14 'which are respectively laid is passed through the applicator 40 and is close to the lower surface of the honeycomb core material 1 to which the adhesive is applied. It is guided to make the honeycomb member (1a) by attaching a nonwoven fabric to the lower surface of the honeycomb core material when passing between the upper and lower adhesive rollers.

In addition, a heater 60 is installed at the rear of the adhesive 50 so that the honeycomb member 1a passes through the adhesive applied to attach the nonwoven fabric 6 to the lower surface of the honeycomb core material 1 during the passage of the honeycomb member 1a. B) It is possible to drastically shorten the manufacturing time by quickly drying with hot air.

On the other hand, in the above, the adhesive 50 is described as being installed in front of the dryer 60, but is not necessarily limited to this, of course, the adhesive may be installed to be accommodated inside the front end of the dryer.

1 is a perspective view showing a state that the adhesive is applied to the cardboard for manufacturing the honeycomb core material.

Figure 2 is a perspective view of a honeycomb core material made by cutting a plurality of cardboard of Figure 1 bonded.

Figure 3 is a perspective view of the non-woven fabric attached to the honeycomb core material of FIG.

4 is a perspective view of a cardboard.

Figure 5 is a schematic side view of the manufacturing apparatus of the honeycomb according to the embodiment of the present invention.

FIG. 6 is an enlarged side view of the mounting plate and the moving plate in FIG. 5; FIG.

FIG. 7 is an enlarged plan view of the moving plate taken from FIG. 5; FIG.

FIG. 8 is an enlarged side view of the applicator taken from FIG. 5; FIG.

9 is an enlarged side view of the main portion of the applicator of FIG.

10 is an enlarged side view of the adhesive and the dryer in FIG.

11 is a urethane-formed honeycomb.

* Description of the symbols for the main parts of the drawings *

1: Honeycomb Core 2, 2 ': Plate

2a: groove 3, 3 ': adhesive

4: staggered parts 5: honeycomb space

6: nonwoven fabric 7: corrugated cardboard

8: corrugated cutting surface 9: urethane-formed honeycomb

10: gas 11: loading plate

13: moving plate 15: rail

20: feeder 21: hanger

30: 1st roller 31, 31 ': upper and lower rollers

40: Applicator 41, 41 ': Up and down application roller

42: support roller 43: adhesive supply plate

50: bonding machine 51, 51 ': upper and lower adhesive roller

60: dryer

Claims (4)

A honeycomb for urethane foam in which a nonwoven fabric is bonded to a cross section of a honeycomb core material. Flattening each cell of the honeycomb core material to have the same size; Applying an adhesive to the cross section of the honeycomb core material; A method of manufacturing a honeycomb for urethane foam comprising the step of adhering a nonwoven fabric to the cross-section of the honeycomb core material to which the adhesive is applied. It has a loading plate for loading the honeycomb core material in the folded state, and two pairs of rollers for pulling and extending the honeycomb core material so that each cell of the honeycomb core material has a certain size through the moving plate for moving the honeycomb core material backwards. A honeycomb heart feeder; Non-woven fabric feeder having a hanger for hanging the nonwoven fabric wound in a roll state; An applicator having an application roller for applying an adhesive to an end face of the honeycomb core material; Apparatus for producing a urethane foam honeycomb comprising an adhesive device having a honeycomb core material from the applicator and a non-woven fabric conveyed from the nonwoven fabric feeder. The method of claim 3, Honeycomb manufacturing apparatus characterized in that it further comprises a dryer for drying the adhesive of the honeycomb core material passed through the adhesive.

Images