JPH06255636A - Device for attaching top pat sheet - Google Patents

Abstract

PURPOSE:To provide a device for attaching a top pat sheet, wherein a top pat sheet put on a carton by means of the device for attaching a top pat sheet does not fall down easily and the upper surface of the carton is protected sufficiently so that the upper surface of the carton is not injured before the top pat sheet is removed. CONSTITUTION:In a device for attaching a top pat sheet 3 wherein upper one of stacked top pat sheets 3 is sucked by a vacuum cup 4 to transfer it to above a carton 8 in which products are packaged, a hot melt gun 7 is provided to apply a hot melt coat 6 to the underside of the top pat sheet 3 which is being transferred.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a top pad sheet mounting device.

[0002]

2. Description of the Related Art As shown in FIG. 7, a carton 8 for packing a conventional product is a cardboard 14 or other cardboard with a kraft paper 15 stretched on it to form a box.
The surface coat 20 (varnish surface) is formed by printing 17 or a picture and applying an under varnish 18 on the upper surface and a non-slip varnish 19 thereon. In order to prevent the surface of the carton 8 from being contaminated during storage, packing work, or the like, a top pad sheet is placed there, and the top pad sheet mounting device for that purpose is shown in FIG. As shown in, the upper one of the stacked top pad sheets is adsorbed by the vacuum cup on the carton 8 stacked on the pallet 9, and the product is conveyed to the packed carton. It can be placed on a pallet.

[0003]

The top pad sheet placed on the carton by the conventional top pad sheet mounting device as described above is simply placed on the carton, and therefore can be easily dropped off. Although there is an example in which the upper surface of the carton cannot be sufficiently protected and an adhesive such as hot melt is used to prevent the sheet from falling off, the adhesive remains on the carton after the sheet is removed or the sheet is removed. Sometimes there is a problem that the printed surface on the top of the carton peels off.

Therefore, an object of the present invention is to prevent the top pad sheet placed on the carton by the top pad sheet mounting device from easily falling off and sufficiently protect the upper surface of the carton. To provide a top pad sheet mounting device which does not damage the upper surface of the carton.

[0005]

In order to achieve the above-mentioned object, the present invention according to claim 1 is one in which the upper one of the stacked top pad sheets is a vacuum cup. In a top pad sheet mounting device that adsorbs and conveys a product onto a packed carton, a hot melt gun for applying hot melt is provided on the lower surface of the top pad sheet during conveyance. According to the invention of claim 2, in the invention of claim 1, the hot melt has a pseudo-adhesive property of destroying only the surface layer surface of the carton when the top pad sheet is removed from the carton.

[0006]

In the present invention as described above, the invention of claim 1 provides the above-mentioned top pad sheet mounting apparatus,
A hot melt gun is provided, and hot melt is applied to a predetermined position on the lower surface of the ceiling pad sheet during transportation, and the ceiling pad sheet is adhered to the upper surface of the carton. According to the invention of claim 2, in the invention of claim 1, the hot melt has a pseudo-adhesive property, and when the top pad sheet is removed from the carton, the top pad sheet destroys only the surface layer surface of the carton. Peel off.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of the present invention shown in FIG. The machine frames 5 on both sides located inside are provided so as to project to the outside of the machine frame 5 and obliquely upward so that the lower surface of the ceiling pad sheet 3 can be coated with the hot melt 6.

In this embodiment, as shown in FIG.
The top pad sheet mounting apparatus 1 sucks up one of the stacked top pad sheets 3 with four vacuum cups 4 and conveys it to the left side of the figure while adjusting the timing of two pieces. The hot melt 6 is injected from the hot melt gun 7 to a predetermined position 2 on the lower surface of the top pad sheet 3.
It is applied to a predetermined position, and while the top pad sheet 3 is conveyed, it is applied to two predetermined positions, that is, a total of four positions. The top pad sheet 3 coated with the hot melt 6 is further conveyed, and is kept waiting until the pallet 9 on which the carton 8 in which the product is packed is loaded is conveyed under the top pallet sheet 3. After the arrival, the top pad sheet 3 is transferred. It is lowered onto it and adhered to the top surface of the carton 8, and the process of going to get the top pad sheet 3 for the next pallet is started. The mounting apparatus 1 repeats such a process. The four locations where the hot melt 6 is applied are located approximately at the four corners of the lower surface of the top pad sheet 3, and the locations are appropriately adjusted depending on the product.

In FIG. 2 showing the hot melt applicator system 10, a hot melt gun 7 discharges and stops hot melt sent from a hose 11 by a command signal such as an electric signal. The number of threads and the discharge amount are determined by appropriately selecting the nozzle 12 provided at the discharge port of the hot melt gun 7. In this embodiment, the nozzle 12 having a diameter of 0.3 mm is used. The hot melt 6 is hot from the applicator main body 13 via a hose 11 that is composed of a tank that heats and melts solid hot melt with a temperature-controlled cartridge heater, and a pump that supplies the melted hot melt under pressure. It is supplied to the melt gun 7.

In the hot melt 6 of this embodiment, when the ceiling pad sheet 3 is removed from the carton 8, as shown in FIG. 3, the surface coat 20 does not peel off from the carton 8 and the interface is destroyed, or the surface coat shown in FIG. It is often in a so-called pseudo-adhesive state in which 20 is peeled off, and as shown in FIGS. 5 and 6, cohesive failure and material failure should not occur. Therefore, use Nitta Gelatin Co., Ltd. HX-920. The coating process is the coating temperature (gun heater temperature) 110 ℃ ～ 140
℃, coating time 0.3 seconds, open time 3 seconds, environmental temperature 25
Perform under the condition of ℃ ~ 30 ℃.

When the top pad sheet 3 coated with the hot melt 6 is conveyed to the upper surface of the carton 8 and adhered to it, as shown in FIG. 7, the pseudo-adhered state is maintained and the upper surface of the carton is not easily dropped. Can be sufficiently protected. When it is used and removed, the surface is destroyed as shown in FIG. 3 or only the surface coat 20 is peeled off as shown in FIG. 4 so that the printed surface can be removed without being damaged.

[0012]

The present invention is as described above. According to the invention of claim 1, one of the stacked top pad sheets is sucked by a vacuum cup to package the product. In the top pad sheet mounting device that conveys onto the carton, since the hot melt gun that applies hot melt to the bottom surface of the top pad sheet during conveyance is installed, the top pad sheet that has been conveyed adheres to the top surface of the carton, making it easy. There is an effect that the upper surface of the carton can be sufficiently protected without falling off. According to the invention of claim 2, in the invention of claim 1, the hot melt has a property of pseudo-adhesion that destroys only the surface layer surface of the carton when the top pad sheet is removed from the carton. The effect is that it does not destroy the printed characters or the material of the carton.

[Brief description of drawings]

FIG. 1 is a schematic elevational view of an embodiment of the present invention.

FIG. 2 is a diagram showing a hot melt applicator system used in the present invention.

FIG. 3 is an explanatory view showing a state in which the top pad sheet is removed from the carton due to interface destruction on the surface of the carton in the present invention.

FIG. 4 is an explanatory diagram showing a state in which the top pad sheet is removed from the carton, the surface coat of the carton is peeled off, and the printed surface is not scratched in the above.

FIG. 5 is an explanatory view showing a state in which the top pad sheet is removed from the carton and the surface of the carton undergoes cohesive failure.

FIG. 6 is an explanatory view showing a state in which the top pad sheet is removed from the carton and the carton is destroyed.

FIG. 7 is a vertical sectional view showing a carton according to an embodiment of the present invention and a state in which a ceiling pad sheet is adhered to the carton.

FIG. 8 illustrates a conventional storage state in which a product is packed in a carton and loaded on a pallet, and the product is packed in a carton and another load loaded on the pallet is stored on the product. It is a figure.

[Explanation of symbols]

 1 Top pad sheet mounting device 3 Top pad sheet 4 Vacuum cup 5 Machine frame 6 Hot melt 7 Hot melt gun 8 Carton 9 Pallet

Claims (2)

[Claims] 1. A top pad sheet mounting device for adsorbing one of the stacked top pad sheets with a vacuum cup and transporting the top product onto a carton packed with the product, the top pad sheet being conveyed. A top pad sheet mounting device, characterized in that a hot melt gun for applying hot melt is provided on the lower surface of the sheet. 2. The top pad sheet mounting apparatus according to claim 1, wherein the hot melt has a pseudo-adhesive property of destroying only a surface layer surface of the carton when the top pad sheet is removed from the carton.