JPH04216037A - Box manufacturing machine for flexible sheet and filling and packaging method - Google Patents

Abstract

PURPOSE:To manufacture a container suitable for filling a substance in the molten state which is solid at the normal temperature inexpensively and efficiently by providing an intrusion male mold for a flexible sheet, a guide means for molding the container of desired shape and a shape retaining means. CONSTITUTION:A flexible sheet is placed hangingly on guide plates 3, 3' on both side sections by inserting an intrusion male mold 1 into a lower section. Lug sections on four corners of the flexible sheet generated by said arrangement are pressed to the lug guide plates 9, 9' and 10, 10' by inserting further the intrusion male mold 1 and folded in a manner of being brought into contact with the outer face side of the container. A container 11 thus formed is fitted into a shape retaining means 12 by moving the intrusion male mold 1 further to the lower section. The container is moved to a filling nozzle section of a filling machine while being fitted in and the substance is filled therein.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible sheet can making machine and a filling and packaging method. For more details,
The present invention relates to a flexible sheet container making machine and a filling and packaging method suitable for filling and packaging molten materials that are solid at room temperature.

0002

2. Description of the Related Art Conventionally, various containers have been proposed and put into practical use for filling and packaging substances that are solid at room temperature in a molten state at relatively high temperatures. For example, in order to improve the releasability between the filling and the container, containers made of relatively thick polypropylene film treated with silicone are molded into trays, and containers made of relatively thick paper are coated with a silicone-treated film on the inner surface. Containers, etc.

0003

[Problems to be Solved by the Invention] Containers made of tray-formed silicone-treated relatively thick films have the following problems: the stretching ratio of the silicone and the film are different, there is a limit to the shape of the container, and the use of a thick film makes the container difficult to use. There was a problem in that it was expensive to manufacture. Further, the use of relatively thick paper containers has problems such as the containers being expensive and the workability of filling the container with molten material being poor. For this reason, containers were sometimes manufactured by hand using relatively thin sheets treated with silicone, such as thin films or thin paper, but the workability during manufacturing and filling was poor, and dirt and dust were generated. There was a problem that it was easy for the liquid to get mixed in, and furthermore, the cost of the container was high. The present invention aims to solve the above-mentioned problems and provide a can making machine that can inexpensively and efficiently manufacture a container suitable for filling a substance that is solid at room temperature in a molten state. A further object of the present invention is to provide a filling method that can efficiently fill a container obtained with the above-mentioned can making machine with a molten material that is solid at room temperature.

0004

[Means for Solving the Problems] The present invention provides a male mold for pushing a flexible sheet, a guide means for forming a flexible sheet into a container of a predetermined shape as the male mold is pushed, and a guide means for holding the molded container in a predetermined shape. A box-making machine for flexible sheets comprising a shape retaining means, the guide means comprising a horizontal guide plate for bending both horizontal side ends of the flexible sheet by pushing with a male pushing die; A vertical side guide plate for folding both side end portions and an ear guide plate for folding the ears formed at the four ends of the sheet are means provided in sequence in the direction of movement of the male mold,
The present invention provides a flexible sheet can making machine in which the shape retaining means has a shape that fits the molded container. The present invention further provides a method of moving the molded container obtained by the flexible sheet can making machine to a filling nozzle portion of a filling machine that fills a substance that is solid at room temperature in a molten state while being fitted in the shape retaining means. A method of filling a substance is provided.

The present invention will be described below with reference to FIG. 1 showing an embodiment of the present invention.
and will be explained based on FIG. A male pushing die 1 is arranged at the upper part of a can making machine so as to be able to move vertically in the direction of a shaft 2 of the male pushing die. The male die for pushing has a shaft 2 so that it can be replaced with a male die of a shape and size according to the shape and size of the container.
It is preferable that it be detachable from or together with the shaft 2. The lateral guide plates 3, 3' are arranged so as to be able to slide freely on the upper folded parts 5, 5' of the side plates 4, 4' of the can making machine, and the lateral guide plates 3, 3' are arranged so as to be able to slide freely on the upper folded parts 5, 5' of the can making machine side plates 4, 4'. Make sure both ends are bent. Can making machine bottom plate 6,
Vertical guide plates 7, 7' are installed between the flexible sheet 6' so that both longitudinal ends of the flexible sheet can be bent by pushing with the male pushing die 1. Vertical guide plates 7, 7'
Preferably, prevention plates 8 and 8' are installed near the center in the lateral direction of the flexible sheet to prevent the lateral bent portions of the flexible sheet from falling toward the outside of the container.

Ledge guide plates 9, 9' and 10, 10 for bending the edges at the four ends of the flexible sheet whose vertical and horizontal sides are bent below the vertical guide plates 7, 7'. ' to be installed. A shape retaining means 12 for the container 11 formed by the male pushing die 1 and the guide means is installed below the ear guide plate.

The shape retaining means 12 has a shape and size that allows the container 11 to fit therein, and includes means for preventing the container from falling inward. As the fall prevention means, temporary fixing means (not shown) for the container may be provided on at least two inner sides of the holding means. This temporary fixing means may be something like double-sided adhesive tape. As shown in FIG. 2, as a fall prevention means, two plates are placed inside the shape retaining means on the side where the ear of the molded container 11 is folded and between the wall and the ear of the molded container. 13, 1
3' may be provided protruding from the bottom surface of the shape retaining means. Further, between the guide means and the shape retaining means,
A means for heat-sealing the ears of the molded container 11 may be provided. Such heat-sealing means include a method in which multiple holes are made in the ear of the molded container using a hot wire, etc., and heat-sealed, or a method in which the heated bar is pressed against the ear of the molded container and this portion is heat-sealed. Various conventionally known heat-sealing means such as means for bonding may be employed. Heat-sealing the ears increases the rigidity of the ears and has the advantage that the shape of the molded container is maintained within the shape retaining means without the need for temporary fixing to the shape retaining means.

[0008] It is preferable to provide a plurality of shape retaining means 12 because container formation can be carried out continuously. Preferably, the bottom of the shape retaining means 12 is provided with at least one air vent hole (not shown) to prevent the fitted container from swelling due to air.

The operation of the can making machine of the present invention will be explained below. A flexible sheet (not shown) cut to an appropriate size is placed over the lateral guide plates 3 and 3'. The lateral guide plates 3, 3' are moved to positions close to the male pushing die 1. By inserting the male pushing die 1 into the lower part, both lateral ends of the flexible sheet are bent upward. Further push male mold 1
By inserting into the lower part, the can making machine side plates 4, 4'
Both longitudinal ends of the flexible sheet are bent upward, and then the flexible sheet is bent upward at a predetermined size by the longitudinal guide plates 7, 7'.

The ears at the four corners of the flexible sheet, which are formed by bending the flexible sheet at both horizontal and vertical ends, can be removed by further inserting the male push mold 1 into the ear guide plates 9, 9. ' and 10, 10
' and is bent so that it touches the outer surface of the container. The container 11 thus formed is fitted into the shape retaining means 12 by moving the male push mold 1 further downward. Temporary fixing means provided in the shape retaining means 12 or thermal fusion of the ears prevent the container from falling down toward the inner surface of the container within the shape retaining means 12, and the shape of the container is maintained.

The present invention further provides a filling method using the container formed as described above. That is, in this method, the molded container is moved to a filling nozzle portion of a filling machine that fills the molded container in a molten state with a substance that is solid at room temperature while being fitted in the shape retaining means, and is filled with the substance. An example of the substance to be filled in a molten state is an adhesive. In order to improve the releasability from the filled flexible sheet such as adhesive, it is preferable to apply a release agent such as silicone resin to the inner surface of the container. By applying a release agent to the outer surface of the container, the filled container may be easily removed from the temporary fixing means. After the adhesive or the like is filled, a flexible sheet cut into an appropriate size may be coated on the surface of the filling material. A release agent may be applied to one side of the flexible sheet to improve releasability. Any means such as a roller conveyor can be used to move the container to the nozzle of the filling machine.

0012

According to the present invention, there is provided a can making machine that can easily and efficiently manufacture molded containers using thin flexible sheets that do not easily maintain their three-dimensional shape. Further, according to the present invention, there is provided a filling method that can easily and efficiently fill a container formed from a thin flexible sheet with a substance that is solid at room temperature.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a can making machine of the present invention.

FIG. 2 is an explanatory diagram showing a shape retaining means equipped with a bayonet.

[Explanation of symbols]

1 Push-in male die 3, 3' Lateral guide plate 7, 7' Vertical guide plate 9, 9', 10, 10' Ear guide plate 11 Container 12 Shape retaining means

Claims (5)

[Claims] 1. A male die for pushing a flexible sheet, a guide means for forming the flexible sheet into a predetermined shape of a container as the male die is pushed, and a shape holding means for holding the molded container in a predetermined shape. A flexible sheet box making machine, wherein the guide means includes a horizontal guide plate that bends both horizontal side ends of the flexible sheet by pushing with a male pushing die, and a vertical side guide plate that bends both vertical side ends of the sheet. A side guide plate and an ear guide plate for folding the ears formed at the four ends of the sheet are sequentially provided along the direction of movement of the male mold, and the shape retaining means is configured to hold the molded container. A flexible sheet can making machine with a shape that fits. 2. The flexible sheet can making machine according to claim 1, wherein said shape retaining means has temporary fixing means for temporarily fixing at least two side surfaces of said molded container to side walls of said shape retaining means with adhesive tape. 3. The flexible sheet can making machine according to claim 1, wherein the shape retaining means includes two plates positioned between the wall of the molded container and the ear fold. 4. The flexible sheet can making machine according to claim 1, further comprising means for welding the ears of the molded container between the guide means and the shape retaining means. 5. The molded container obtained in claim 1 is moved to a filling nozzle portion of a filling machine that fills a substance that is solid at room temperature in a molten state while being fitted in the shape retaining means, and the substance is How to fill and package.