JPS6233067B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing an assembled container and an apparatus for manufacturing the same.

Several methods and apparatus for manufacturing assembled containers have been proposed in the past, but all of them have a drawback in the means for fusing the ends of the side plate forming portions of the unfolded sheet for assembled containers that are raised and bent in a mold. Therefore, it has been difficult to manufacture an assembled container in which the bonding strength of the fused portion is high. In addition, conventionally, the supply of unfolded sheets,
Each operation, such as molding the assembled container and storing the molded assembled container, is performed separately and requires procurement, and the work efficiency is poor, so it has been desired to improve the work efficiency.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for manufacturing an assembled container, which eliminates the drawbacks of the prior art, provides an assembled container with a high bonding strength at the fused end, and improves work efficiency.

That is, in the present invention, an assembled container expansion sheet made of a thermoplastic resin foam sheet is sucked and taken out from an expansion sheet supply section by a pressing plate having a suction mechanism, and after being held, the fused ends of each side plate forming part of the sheet are removed. The sheet is then lowered and placed on the mold, and then introduced into the mold by the pressing plate to raise each side plate forming part of the sheet and melt the molten melt. The attached end portions are fused to form an assembled container, and then the pressing plate is moved to suction and take out the next unfolded sheet, and a take-out plate having a suction mechanism is used to suction and take out the assembled container. The gist of this paper is a method for manufacturing a vertically assembled container. Another gist of the present invention is an assembly container expansion sheet supply unit, a mold installed on a base,
It has an elevating receiving plate that moves up and down within the mold, a heating means that is located above the mold and heats and melts the fused end portions of each side plate forming part of the spread sheet, and a suction mechanism,
It is characterized by comprising a press plate that can be moved up and down to the position of the heating means and the mold, and can be moved laterally above the heating means, and a take-out plate that has a suction mechanism that can be interlocked with the press plate. Located in assembly container manufacturing equipment.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a boat-shaped container manufacturing apparatus which is an embodiment of the assembled container manufacturing apparatus 1 of the present invention. This manufacturing apparatus 1 can consistently carry out the process from supplying a boat-shaped unfolded sheet 2' as an assembled container unfolding sheet 2 to taking out a boat-shaped melter 3' as a molded assembled melter 3. In FIG. 1, four molds 5 for molding a boat-shaped container are arranged on a table-shaped base 4 so that the inner surface 6 of the mold forms a boat shape. The inner surface of the mold 6 has an upwardly extending inclined surface 7 on the upper side, and this inclined surface 7 raises the side plate forming part 8 of the unfolded sheet 2' entering the mold 5 and forms the side plate 9 of the boat-shaped container 3'. Perform formation. In the space formed by the mold 5, an elevating receiving plate 10 that can be raised and lowered is disposed. This receiving plate 10 has a bottom surface supported by a column 11, and a coil spring 1 attached to the column 11.
2, it is always energized upward. Further, the receiving plate 10 is located at the same height as the upper surface of the mold 5, and when forming the boat-shaped container 3', the unfolded sheet 2' is placed, and when the unfolded sheet 2' enters the mold 5, It is lowered to prevent the bottom part of the spread sheet 2' from hanging downward and to position the bottom plate 13 of the boat-shaped container 3'. Four heating blades 14 are arranged above the mold 5 as heating means.
The heating blade 14 is disposed, for example, at a position corresponding to the gap between the side plate forming parts 8 of the boat-shaped unfolded sheet 2' shown in FIG. heating the fused end portion 15 of the portion 8;
melt. It is preferable that the heating blade 14 be relatively large because the temperature will be stabilized, and it may or may not be in contact with the spread sheet 2' during heating, but non-contact is preferable because dirt and the like will not adhere to the sheet 2'.

A press plate 17 fixed to an appropriate means such as a cylinder 16 and movable up and down is disposed above the heating blade 14. The pressing plate 17 has a suction mechanism 18,
The suction mechanism 18 takes out the spread sheet 2' from the spread sheet supply section 19 and holds it. Further, the press plate 17 descends while holding the unfolded sheet 2', and passes through the heating blade 14 to heat and melt the fused end 15 of the side plate forming portion 8 of the unfolded sheet 2'. It has the effect of causing the material to enter the mold 5. The cylinder 16 is attached to a first support 20, and a rod 21 raises and lowers a pressing plate 17. The first support 20 is slidably mounted on a laterally extending shaft 22 and is connected to an optional actuator 23 for moving the support 20. The first support 20 is connected to a second support 25 via a connecting rod 24.
is connected to. The second support body 25 is slidably attached to the horizontal shaft 22, and the take-out plate 26
It supports a cylinder 27 that operates the . The take-out plate 26 is fixed to a rod 28 of a cylinder 27 and is movable up and down, and has a suction mechanism 29. The take-out plate 26 suctions and lifts the boat-shaped container 3' formed by the mold 5 using the suction mechanism 29, and
It has the function of holding and transferring the assembled container to the storage section 30. The unfolded sheet supply section 19 and the assembled container storage section 30 are respectively arranged at appropriate positions where the press plate 17 and the take-out plate 26 are movable, and the boat-shaped unfolded sheet 2' and the boat-shaped container 3' are placed on appropriate support stands 31, 32.
Each is stored on top.

In the manufacturing apparatus 1 of the above embodiment, the mold 5 is divided into four parts, but the mold 5 may be integrally connected. Further, the press plate 17 and the take-out plate 26 are supported by the first support body 20 and the second support body 25, respectively, and are connected by the connecting rod 24, so that they interlock.

Next, a method of manufacturing a boat-shaped container 3' using the manufacturing apparatus 1 will be explained.

As shown in FIG. 4, the boat-shaped spread sheet 2' is first taken out and held by the suction mechanism 18 of the pressing plate 17, and then the first support body 20 is slid along the shaft 22 by the actuating device 23 and pressed. The plate 17 (deployed sheet 2') is positioned above the heating blade 14.
Next, the cylinder 16 is actuated to lower the pressing plate 17, and the spread sheet 2' is passed through the heating blade 14 to fuse the side plate forming portions 8 of the spread sheet 2' as shown in FIG. The end portion 15 is heated and melted. After that, the pressing plate 17 is further lowered to place the unfolded sheet 2' on the upper surface of the mold 5 and the elevating receiving plate 10, and then continues to descend, the unfolded sheet 2'
At the same time as the bottom part of the vertical plate 10 descends, the side plate forming part 8 rises along the inclined surface 7 of the mold 5 (sixth
), the fused end portions 15 are then fused and joined to form the boat-shaped container 3' shown in FIG. 3 (FIG. 7). After forming the boat-shaped container 3', when the pressing plate 17 is raised by the cylinder 16, the lifting receiving plate 10
lifts up with the boat-shaped container 3' on it and returns to its original position (Fig. 8). Next, when the first support body 20 is moved to move the pressing plate 17 to the spread sheet supply section 19, the second support body 25 connected to the first support body 20 moves, and the take-out plate 26 moves to the mold 5. Move to the upper position (Figure 8). Next, the take-out plate 26 is lowered to the position of the boat-shaped container 3' by the cylinder 27, and the boat-shaped container 3' is lifted and held by the suction mechanism 29, and then the take-out plate 26 is raised. At this time, the pressing plate 17 lifts and holds the next spread sheet 2' in the spread sheet supply section 19. Thereafter, the take-out plate 26 is moved to the assembled container storage section 30, the suction mechanism 29 is released, and the boat-shaped container 3' is stored on the support stand 32. At this time, the pressing plate 17 holds the unfolded sheet 2' and is positioned above the heating blade 14, and the above-described operations are repeated to form the boat-shaped container 3'. Thus, according to the method of the present invention, the steps from taking out the boat-shaped unfolded sheet 2' to storing it in the boat-shaped container 3' can be performed consistently and continuously.

The thermoplastic foam resin sheet used in the present invention includes foamed polystyrene-based resins such as polystyrene homopolymer, styrene-maleic anhydride copolymer, and high-impact polystyrene made by blending butadiene with polystyrene. A sheet can be used. In addition, the boat-shaped unfolding sheet 2' is the second
As shown by the imaginary line in the figure, a welding margin 33 may be provided, and in this case there is an advantage that the welded end portions are further fused and joined.

9 and 10 show another unfolded sheet 2 of an assembled container obtained by the method of the present invention. A rectangular container can be obtained from the developed sheet 2 in FIG. 9, and a hexagonal container can be obtained from the developed sheet 2 in FIG. In manufacturing the above container,
It can be obtained by the same method as described above except that the shape of the mold 5 is changed to a square or hexagonal shape. Further, at this time, the mold 5 may be one in which the inclined surface 7 is not formed on the upper side.

As explained above, in the method of the present invention, an assembled container unfolding sheet made of a thermoplastic resin foam sheet is passed through a fixed heating means to be heated and melted, and then an assembled container is formed. Since this is a method that consistently and continuously performs the steps of taking out, forming the assembled container, and storing it, and the apparatus of the present invention is equipped with a structure for this purpose, the fused end of the side plate forming part of the spread sheet is heated by the heating means. is reliably heated and melted, and the ends are firmly joined to each other during molding, making it possible to obtain an assembled container with high joint strength.The above-mentioned device also allows for the process from taking out the assembled container unfolding sheet to forming and storing the assembled container. This has the advantage that it can significantly reduce the amount of work done by humans.

Further, according to the present invention, since the take-out plate is configured to be interlocked with the press plate, it is possible to take out the assembled container and take out the next unfolded sheet at the same time, and the two plates can be operated together. It does not require adjustment of operating cycles, etc., and can ensure safety.
As a result, work efficiency can be improved.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway schematic front view showing an embodiment of the manufacturing apparatus of the present invention, FIG. 2 is a developed view of a boat-shaped unfolded sheet, and FIG. A perspective view of the obtained boat-shaped container, and FIGS. 4 to 8 show each step of the present invention, respectively. FIG. 4 is a schematic partially cutaway front view, FIG. 5 is a partially cutaway plan view, and FIG. ~Figure 8 is a partially cutaway schematic front view;
Figure 9 is a developed view of the rectangular container development sheet, Figure 10
The figure is a developed view of a hexagonal container development sheet. 1... Assembly container manufacturing device, 2... Assembly container development sheet, 3... Assembly container, 4... Base, 5...
Mold, 7... Inclined surface, 8... Side plate forming part, 10...
Lifting receiving plate, 14... Heating blade, 15... Fusion end,
17... Pressing plate, 18... Suction mechanism, 19... Expansion sheet supply section, 30... Assembly container storage section.

Claims (1)

[Scope of Claims] 1. After taking out and holding an assembly container unfolding sheet made of a thermoplastic resin foam sheet from an unfolding sheet supply section by suction using a pressing plate having a suction mechanism, fusing the respective side plate forming portions of the sheet. The end portions were heated and melted by a heating means, and then the sheet was lowered and placed on the mold, and then advanced into the mold by the pressing plate to raise each side plate forming portion of the sheet and melt it. The fused end portions are fused to form an assembled container, and then the pressing plate is moved to suction and take out the next unfolded sheet, and a take-out plate having a suction mechanism is used to suction and take out the assembled container. Features: A manufacturing method for assembled containers. 2. An assembly container deployment sheet supply unit, a mold installed on the base, an elevating receiving plate that moves up and down within the mold, heating the fused end portions of each side plate forming part of the deployment sheet located above the mold, A pressing plate having a heating means for melting and a suction mechanism, movable up and down to the position of the heating means and the mold, and movable laterally above the heating means, and a suction capable of interlocking with the pressing plate. An assembly container manufacturing device comprising a take-out plate having a mechanism.