JPS5967026A - Brim-curling method of container formed from foamed sheet - Google Patents

Abstract

PURPOSE:To enable to easily and efficiently curl a brim part of a container formed from a foamed sheet, by a method wherein easily bendable cuts are provided at entire periphery of a side wall of a container by a cutter blade before the container engaged with a plug is fed to a curling part. CONSTITUTION:Curling parts B, B' and recovering parts C, C' are provided in parallel at left and right parts of a supplying part A provided at a central part. A movable table 5 provided at a lower part reciprocates a set of curling die 4 and plug die 2 between a supplying part A and the curling part B. A peripheral part of a curling groove 40 of the curling die 4 is heated by a heater 42, and a lubricant is supplied from a supplying part 41. By relatively moving a rack 22 and the table 5 in parallel to each other, a pinion gear 21 is rotated to rotate the plug die 2. A vacuum sucking hole 27 provided at an upper surface of the plug die 2 is connected to a vacuum pipe 52, and sucks the container 1. The cutter blade 77 is brought into contact with the side wall proximate to the brim of the container 1 engaged with the plug die 2 to form cuts. A spiral feeder 8 is rotated to supply by dropping one container at a time onto the plug die 2. A vacuum sucking hole 31 is provided also at an upper part of the inside surface of a cavity die 3 lifted by a cylinder 30, so that the container 1 can be fitted and supported by suction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rim winding device for containers made of foamed sheets, and an object thereof is to provide a device that has good processing efficiency and can provide a high-quality finish.

Conventionally, paper cup containers have been subjected to so-called lip curl processing, in which the mouth edge is rolled up to form rounded curled ribs, and by forming the curled ribs or lips, It is said that it not only strengthens the mouth edge but also improves the mouthfeel when used as a beverage container and is also hygienic. However, in recent years, cup-shaped molded containers made of foamed polystyrene sheets, which have superior heat and cold retention properties compared to the above-mentioned paper containers, have begun to be used. It is said to be difficult.

Therefore, there is a method and device that performs lip curling by pushing a synthetic resin container into a heated mold while rotating it.
For example, Special Publication No. 38-24594, Special Publication No. 39-208
We also attempted to apply the method (see No. 2, etc.) to containers made of foam sheets, but it was too difficult to form a perfectly shaped lip.
The finish was also not satisfactory.

In other words, foamed sheet molded products have little elongation in the circumferential direction of the container due to the orientation of the sheet itself caused by stretching during sheet molding, and since foamed sheets have heat insulating properties, they can be softened appropriately in a short time. It is difficult to heat it to a high temperature, so it is easy to crack or tear during the winding process, resulting in very poor winding properties and a poor finish, which is uniform all around the rim. It is difficult to maintain the processing force 3 times 4 times, and there are disadvantages such as unevenness and poor dimensional accuracy of the product, especially when a lid formed separately from the container is fitted to the rim to cover the container. However, since precise dimensional accuracy of the mouth edge is required, conventional containers made of foam sheets could not be used.

Therefore, the present invention provides an apparatus that can easily and efficiently wrap the mouth edge of the foamed sheet container, and its configuration includes a supply section and a container supply section. In addition to the winding part of the mouth edge part being arranged side by side, a movable table is installed below between the supply part and the winding part, and a winding groove is formed on the movable table. A curling mold is provided, and the winding groove can be heated.A plug mold that can be fitted into the inner surface of the container is rotatably provided in the center of the curling mold, and a vacuum suction hole is provided on the surface of the plug mold. There is a container above the supply section.
A container supply mechanism is provided that can feed the containers one by one onto the plug mold.A cavity mold into which the outer surface of the container can be inserted is provided above the winding part so that it can be raised and lowered and rotated.The inner surface of the cavity mold is equipped with vacuum suction holes. Furthermore, a winding base forming member such as a cutter knife, which forms a winding base such as a cut that is easier to bend than other parts, is provided on the outer periphery of the side wall at a position on the movable table where it can come into contact with the side wall of the container. It is characterized by having

Next, embodiments of the present invention will be illustrated below with reference to the drawings.

In the case of the illustrated device, one supply section (8) is provided in the center, and each winding section (equal to the left and right) is symmetrically arranged on the left and right sides of the supply section (8). ' are arranged one after another on a straight line. (6) is a moving table provided below each part so as to be movable along the direction in which each part is arranged side by side, and (2) is a cylinder for movement.

On the movable table (6), a groove for curling is provided on the top surface.The mold (2) moves back and forth between the supply section (8) and the winding section (B on the right side), and is connected to another set of curling molds. (4) and plug type (2), the winding processing part (Bl'
It is designed to move back and forth between the two.

The area around the winding groove (40) of the curling type (4) is heel (
It can be heated with a heat sink, etc., and it can also be heated with a curling type (4
) and the moving table (5), there is a heat insulating member (4,
The curling mold (4) is fixed to the movable table (5) via a heat-insulating rtM. (41) is a supply hole for lubricant, etc., which is opened on the inner surface of the winding groove (40), and is used to feed a lubricant such as silicone water through the inside of the curling mold (4) into the winding groove (40). -) and
While the lubricant passes through the curling mold (4), DI'
It is heated and supplied to the winding machine 10) in a crystalline or vaporized state.

Next, the plug type (2) is the lower plug lil+ @0! The plug 1. penetrates into the central cavity of the curling mold (4), is rotatably fitted into the movable table (5) below it, and further protrudes to the lower part of the movable table (6). dl f
A pinion gear (21) is attached to the goj, and a rack (7 gears) that meshes with this pinion gear (21) is provided so as to be movable in the direction parallel to the moving table (5) using a cylinder f7!31 etc. Therefore, by relatively moving the rack (22, moving table (5), and plug shaft (20) in parallel, the pinion gear (21) rotates, and the plug type (2) integrated with the pinion gear (21) rotates. )
can be rotated.

Further, the lower end of the plug shaft (20) is placed in contact with the base (24), and the plug and plug type (2) are arranged in a curling type (
4) It is in a state where it is slightly lifted upwards. And (to) is the winding part (B) of the base stand (24)
It is a fitting hole provided at a position corresponding to the center of (B)', and (26) is a fitting hole (an elevating plate provided that can be raised and lowered from the bottom to the top within 2θ, and the lower end of the plug shaft (20) The above insertion hole (lifting plate (support) when moved to the 2-yen position)
) by raising and lowering the plug shaft (20) and the upper plug mold (2).

In addition, the top surface of the plug type (2) has vacuum suction holes +2
7) is open so that the container (, 1) can be fixed by suction. The other end of the suction hole t27 passes through the lower plug shaft (20) and opens on the outer circumferential surface of the movable table (5), and the circumferential groove (5) formed on the movable table (5) side. It is connected to the external vacuum pipe 2) through the pipe. Therefore, the plug type (2) and the plug shaft (20
) freely rotates or moves up and down, the suction hole η always communicates with the vacuum pipe (52) so that the container can be suctioned and fixed.

Next, the left and right curling i! A mandrel mold (6) is provided on the outside of each of the i+4i4) and the plug mold (2), and the container after being wound can be fitted into the mandrel mold (6). Winding processing section (B) (B)' to recovery section (C)
(C)', and (ω) is an air blowing hole opened in the upper surface of the mandrel mold (6).

Furthermore, +71 +7) is from the supply part (A) of the plug type (2) and curling type (4) to the winding part (B) (B
)' is a cutter knife provided in the path of movement to the container f1+ fitted in the plug mold (2), so that it can make a cut by coming into contact with the side wall near the mouth edge of the container f1+.

Next, above the supply section (A), (8) is the container supply machine 4.
．． It is a spiral feeder that becomes MM, and as the feeder (8) rotates, it feeds containers one by one into a plug type (2).
It is designed so that it can be supplied by dropping it upwards.

Further, above the winding part CB)(g))', a cavity mold (3) is provided that can be raised and lowered by a cylinder (3o), etc., and a vacuum suction nipple is also provided at the upper part of the inner surface of this cavity mold (3). ) It is designed so that a container can be inserted into it and held by suction. In addition, cavity type (3
) is rotatably supported by the cylinder (30).

Furthermore, a suction shooter (9) is provided above the collecting section (C) (C)', and the container after being wound is sucked upward and collected.

The operation of the mouth rim winding device as described above will be explained next.

First, a container made of foam sheet (1) processed with this invented device
As the material, for example, a foamed polystyrene sheet with an expansion ratio of 1.5 to 13 times, a foamed sheet of other columnar thermoplastic resin, or one or both sides of the foamed sheet,
For example, a non-foamed film made of high-impact polystyrene, -axially or biaxially oriented polystyrene, polypropylene, polyethylene, or other resin may be used -IN or a plurality of layers laminated. The thickness of the foamed sheet used is 0.5 to 2.5 ttx (product thickness), and the thickness of the non-foamed film to be laminated is 8 to 80μ (product thickness).

Then, the foamed sheet is expanded into a container shape such as a cup shape or a bowl shape by vacuum molding or other so-called sheet molding methods to form a desired container file. In practice, the container (1) is used with a ratio of diameter width to height H of approximately I(/D = 0.4 to 1.2).

As a result of the above-mentioned molding, a flurry-shaped mouth edge (10) is formed at the upper end of the container +I+, which is curved outward in a hook shape. The shape of this rim (10) can be various depending on the winding property during the winding process described later and the shape of the wound rim to be formed. (
10) with a relatively short hanging edge (11) formed at the outer peripheral end is preferable in terms of processing and finish quality.

Flange-shaped mouth G portion (10
), the numerical value changes depending on the size of the container, but
For example, the width of the mouth edge (10) is 1.5 to 6.0 □, and the height of the hanging edge (+1) on the outer periphery is about 1.0 to 2.0 square. If the edge (n) is too long, the finished shape after winding will be poor.

Further, the entire side wall of the container is formed in a tapered shape that spreads from the bottom to the upper opening side, but only a suitable length below the mouth edge (10) is a vertical wall part (12) without a taper. . The length of this vertical wall portion (12) may be at least slightly below the winding base point, which will be described later, and is usually 2.
It is formed to have a length of about 5 to 11.01lII.

A material container (1) previously formed in the above shape is set in the spiral feeder (8) of the supply section (A).

Then, the movable table (5
) and rotate the spiral feeder (8) appropriately to drop and feed one container +11 so that it is fitted onto the plug mold (2). Container fi+ fitted to plug type (2)
is fixed by vacuum suction through the vacuum suction hole (2).

However, at this time, Plug II! Since the lower end of 1lI (20) is placed on the base holder 4), the plug mold (2) is slightly raised above the curling mold (4), and the container is The lipstick part (101) of fi+ is fixed in a state where it is just fitted into the winding groove (411) of the curling mold (4).

For winding 'R13 (411) of the Naori-ring type (4), add a small amount of silicon water (silicon is diluted 100 times) to serve as a lubricant and heated to about 90°C to 120°C in advance. 0.2 cc or less), and then insert the winding groove (40 cc or less) into the winding groove.
) and the lipstick part (lO), and heat the winding groove (40) so that the lip rim part (10)
is heated to a specified temperature.

Next, move the moving table (5) to the winding section (B).
Move the plug mold (2) and container f1+ below.

At this time, is the pinion gear (21) attached to the bottom of the plug shaft (20) loose? (22), the plug mold (2) and container (1) rotate as they move. Then, while the cutter knife (7) provided in the moving path comes into contact with the side wall of the container t1+, when the container (1) makes one or more rotations, a cut (13) which will be described later as a winding base point is made over the entire circumference of the side wall. is cut and formed (see Figure 4).

Then, when the plug mold (2) moves directly below the cavity mold (3) of the winding part (B), the cavity mold (3)
descends and covers the outer surface of the container (1), and is fixed by suction through the vacuum suction hole (31), whereby the container (1) is sandwiched between the plug mold (2) and the cavity mold (3) and fixed together. . In addition, at this time, from the vicinity of the notch (13) where the winding process is performed in the container ill, to the mouth edge (10)
The tip side has a plug type (2) and a cavity type (3).
) is exposed below.

In addition, up to this stage, the area around the mouth edge (101) is heated to a predetermined temperature at which winding is possible, but in particular, parts that require large deformation during winding, such as the side wall near the notch (13) or the mouth edge (lO ) It is preferable to heat the root part of the hanging edge (11) at the tip, etc., and the heating time will vary depending on the material and wall thickness of the container (1). At times, it is stretched greatly in the vertical direction, so the mouth edge (101 is added (5th
(see figure).

At the stage of the above process, the plug type (2) on the other side is placed below the supply part (A), so one container (1) is transferred from the feeder (8) to the plug type (2). Supplied. Therefore, the container [+1] supplied to the plug type (2) on the other side is also wound in the same way in the winding part (B)' side as it is one step later than the Bl side. However, since the explanation would be redundant, a detailed explanation will be omitted.

Next, the rim (lO) is wound.
First, the pinion gear HJ and the plug mold (2) are rotated by translating the rack (Fig.

In this state, by lowering the cavity mold (3) and simultaneously lowering the elevating plate (26), the elevating plate (26) is lowered.
6) The upper plug shaft (20) and plug mold (2) are lowered.

Therefore, the container (ll is pressed vertically along the side wall from above toward the winding groove f40) while rotating, but the notch (13) in the middle of the vertical wall part (+2) is Since the strength is weaker and it is easier to bend, the container first deforms greatly from the notch (13) to curve outward from the container (+1) along the winding groove (40). ) is used as a starting point, and the mouth rim (10) on the tip side is also deformed so as to be wound outward of the container f+) along the winding groove (40). Although the notch (13) was slightly turned in a V-shape, due to the winding deformation in the above-mentioned winding process, the notch 5 (13) is again closed in a linear shape (see Fig. 6). .

When the cavity mold (3) and plug mold (2) are further pressed down until they come into contact with the curling mold (4),
Mouth;T/;j 8 [1o1 tip is cavity type (3
) is brought into contact with the lower surface and bent to the sub-horizontal direction, and the mouth edge (1
0) is completely wound (see Figure 7). At this time, it is most preferable in terms of appearance and strength to wind the container so that the tip of the rim (1o) just contacts the side wall of the container (11), but in practice, the tip of the rim (10) and the side wall There is no problem even if there is a slight gap between the two (see Fig. 9), and it can also be used in a state where the tip of the opening edge (lO) is further rolled up above the side wall.

When the winding process is completed as described above, a cavity mold (
3) The right side and the plug mold (2) rise to release the suppression, and the cavity mold (3) returns upward.

At this time, by releasing the vacuum suction of the plug mold (2), the container +11 is lifted upward and held while being fitted into the cavity mold (3).

When the drum mold (6) returns to its original position, the adsorption of the cavity mold (3) is released and the container (1) is dropped to fit into the mandrel mold (6).

At this time, the container (1
) fitted plug type (2) etc. will be located,
The cavity mold (3) is lowered and the same winding process as described above is performed.

After the winding process in the winding part (B) on the other side is completed and the cavity mold (3) is raised, the moving table (5) is moved again and the container [+
Position the mandrel mold (6) into which the parts 1 and 1 are fitted.

Next, the container (11) is sucked upward by the shooter (9), and at the same time, air is blown upward from the mandrel type (6) air blowing hole to assist in recovering the container (1). And container +1 at shooter (9)
1 is appropriately transported to a collection point, the winding process for one container (11) is completed.

At this stage, the winding section (B) is currently winding another container (f+), and the supply section (A) is winding the container [1] to the plug mold (2) on the other side. This is the step of dropping and feeding the other side of the winding section (+
In 3), cavity type (3) to mandrel type (6)
By further operating the device, each container +11 will be continuously wound through the steps explained above.Therefore, the supply section ( In A), the containers [+] are fed one by one to the left and right plug molds (2), and the containers +11 that have been wound sequentially in the left and right plug molds (2) are collected #(C) and C).
They will be collected alternately into the shooter (9).

Among the above devices, the feeding mechanism for the containers tl+ includes a spiral feeder (8), various conveyor mechanisms, a conveying mechanism using vacuum suction, and other devices that can feed and fit the containers (1) one by one into the plug type (2). If so, you can freely change and implement them.

The plug type (2) rotation and elevating mechanism can be modified as appropriate by combining known mechanisms such as a servo motor and a cylinder mechanism.

It can also be carried out even if the plug type (2) does not have an elevating mechanism; in this case, before winding, the plug type (2) is not in close contact with the inner surface of the container (1), but there is a gap in the vertical direction. Then, as the cavity mold (3) descends, the mouth edge (In) is rolled up and the container mold is tightly fitted into the plug mold (2).

Next, as a heating mechanism for the curling mold (4), an electric heater (a) is wound around the outside of the mold so that the entire curling mold (4) can be heated. Areas that require heating can be efficiently heated by embedding a heater in the curling mold (4), and various heating methods such as high frequency heating or using a high temperature heat medium can be employed.

In addition, the lubricant is supplied to the rim of the container (which rotates during the winding process).
To make processing easier by reducing the friction between the winding groove (lO) and the winding groove (lO), and to fill the gap between the winding groove and the opening edge (lO) with a lubricant or steam generated when the lubricant is heated. This reduces the heat transfer from the winding groove (40) to the mouth edge (
10), and the dimensional accuracy of the mouth edge (10) is not very high.
1) is preferable because it can be processed without any problem, but silicone or other materials with good lateral lubricity are used as the lubricant component. It is preferable for the heating effect to heat the lubricant to a high temperature before supplying it to the winding groove (40). The location near the top end or the bottom surface can be changed as appropriate depending on the mode of use.

Note that even if steam or hot air is sent into the lubricant supply hole (41) instead of the lubricant described above, the opening edge (lO
) has the effect of improving heat conductivity or heating efficiency.

Next, the notch (13) formed in the side wall of the container +11 is
This serves as the winding base point for the rim (10) during winding, and is used to cut the rim (10) using a thin-bladed cutter knife (7).
) Cut a line along the entire circumference of the side wall slightly below ) to the middle of the wall thickness (depth is in the range of about 1/3 to 415, preferably 275 to 2/3). However, the formation position of this notch (13) is at the point where the largest deformation is required when the mouth edge (10) is wound, that is, at the inner periphery of the mouth edge after winding. It is formed at the upper end of the side, and specifically varies depending on the winding shape of the mouth edge, etc. In the illustrated embodiment, it is formed from the hanging edge (11) at the tip of the mouth edge (lO). A cut portion (13) is formed so that the cutter knife (7) comes into contact with the side wall at a slightly lower position.

In addition to the thin-blade cutter knife (7) mentioned above, other members for forming the point portion of the winding system include a V-shaped or other cutter for cutting the circumferential groove, or a pusher that presses the side wall to form a circumferential groove-like recessed portion. Even if a member or the like is provided, it is possible to form a winding base portion that is easier to bend than other portions, similar to the above-mentioned notch portion. Furthermore, in addition to a cutter knife (7) that continuously forms notches (13) etc. around the entire circumference of the container, it is possible to use a cutter knife that has intermittently formed blades such as a perforation blade. It is also possible to form (13) etc. intermittently in the form of perforations.

In the illustrated embodiment, a cutter knife (7)
The notch (13) is formed by fixing the container (1+ side) and rotating it while moving the container (1+ side).
1) is in the supply section (A), the container il in a stationary state
A winding system point forming member such as a rotatable cutter knife (7) is installed along the outer circumference of the container (1), and as the cutter knife (7) moves around the container (1), the cut portion ( 1
3), etc. 1, and then the processed container (+1) may be collected using a mandrel (6) set on a moving table (5) as in the illustrated embodiment. The container f1+ is transferred from the winding processing section (B) (Bf to the collection section (C)
) (C)' and sucked up and collected by the chute (9), as well as winding processing (B) (B)'
It is also possible to take out and collect the container (1) directly from the cavity mold (3) using a conveyor or other mechanism; in this case, the mandrel mold (6) and the collection part (C)
'The shooter (9) becomes unnecessary.

In place of the shooter (9), the collecting section (C) (C)' may be provided with a conveyance mechanism for the container f+) which is a combination of various known crank mechanisms and conveyor mechanisms. Furthermore, the mandrel mold (6) is equipped with an air outlet (phantom) and an eject pin that can freely protrude upwards.
) may be sent to the shooter (9) side.

As for the overall structure of the device, as in the embodiment, two (lI! II) winding parts (B) and (Bf, etc.) are arranged in parallel on the left and right sides of a supply part (A) in one central part, and are arranged alternately. If the container (+l) is supplied, efficient processing can be performed and the device itself can be made compact, which is suitable.Also, since the device with the above configuration can be accommodated in a narrow width, if multiple devices are installed in parallel in the width direction, large quantities can be processed. It becomes easier to respond to production. However, it is of course possible to implement a system in which the supply section (A) and the winding section (B) are provided in one location, and in addition, the supply section (A) and the winding section (B) can be installed in one location. The arrangement can be changed freely.

According to the device of the present invention configured as described above, the foam sheet container (1), which has conventionally been considered to be extremely difficult to wind due to axial stretching, can be
Winding part CB of container +1+ fitted to plug type (2)
) before transferring to the cutter knife (7).
With the winding base forming member such as ), it is possible to form a winding base such as a notch (13) that is easier to bend than other parts on the entire circumference of the side wall. Mouth rim (
Since the winding of 1F1) can be done very smoothly and the curved area is constant, there are no cracks or tears in the material sheet as in conventional methods, and there are no wrinkles in the finished product or partial winding. This also eliminates the occurrence of variations in the values.

In addition, the dimensional viscosity of the winding opening edge (10) after processing is stable and accurate, so when a separately formed lid is used to fit into the opening edge (lO), the fitting is particularly accurate. It is suitable because it can be used in combination.

After the container f+) is fitted into the plug mold (2), the container f+) is placed in the supply section (A) with the mouth edge (10) fitted into the heated winding groove (4o) of the curling mold (4). Since the material is transferred to the winding processing section (B), it is heated to a predetermined processing temperature during that time, and there is no need to provide extra heating time, so that more efficient processing can be realized.

Although the processed container is made of a foam sheet, it has a good rolled edge and is suitable for a variety of uses, such as for improving the taste and hygiene when used as a beverage container. With great usage advantages,
The reinforcing effect of forming the winding mouth edge is very large, and is effective in improving the rigidity or strength of the container +1+ as a whole.

Regarding the reinforcing effect of the mouth rim (10), strength tests on the mouth rim were conducted on a practical product whose mouth rim (10) was wound using the device of the present invention and a comparative product before winding. As is clear from FIG. 8, the strength improvement achieved by the winding device of the present invention was demonstrated.

That is, as a test method, a horizontal compressive load was applied to the mouth edge to generate a strain of 18 m, and the repulsive force was measured.

Several types of containers were tested with the same shape but with different stacking positions (the stacking differs depending on the expansion ratio and sheet thickness), and the approximate dimensions of the containers were determined by the mouth rim before winding. The outer diameter is 81 mJ2r, the height is 91 mm, the width of the flange-shaped mouth edge (10) is 3.5 m, and the height of the hanging edge (11) is 2.5 m. 1 m, and the length of the vertical wall (12) is 12
Using a sheet with a thickness of 1.6 mm at the u1 vertical wall portion (12), winding was performed, and after processing, the wound edge portion (1o) had a width of 3.5 am and a height of 3.5 u. The length of the vertical wall portion θ2) was 8.5 fl.

From the above test results, for example, when using containers of the same strength, if the product is wrapped using the device of this invention, the weight will be reduced by about 0.5P per container compared to one without the winding process. This proved to be economical in terms of manufacturing and transportation costs.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the present invention, and Fig. 1 is a structural diagram of the entire device, Fig. 2 is a half-sectional view of the container before processing, Fig. 3 is an enlarged sectional view of the main part, and Fig. 4 - Figure 7 is an enlarged sectional view of the main part showing the operating process of sequential winding processing, Figure 8 is a half sectional view of the container after processing, Figure 9 is an enlarged sectional view of the main part, and Fig. 10 is the strength test result. It is a graph prisoner. +1+...Container, (lO)...Frontispiece, (13:1
...Notch, (2)...Plug type, (3)...
Cavity type, (4)... Curling type, (41.
... Winding groove, (6)... Moving table, (6)...
・Mandrel type, (7)...Cutter knife, (8)
... Spiral feeder, (9) ... Suction shooter 1 (A) ... Supply section, (B) (B)' ... Winding processing section, (C) <cl ... Recovery Department. Patent Applicant: Sekisui Plastics Co., Ltd. Figure 2 Figure 4 Figure 3 Figure 5 Figure 8 Figure 9 Showa 5711 "!1'7 Permission No. 177")7
2252 Name of the invention Foamed sea 1 - Container made of foam 1] Edge winding v,, 1σ1'3,
? +1iiF person = ri fl which relationship +h iQ: lil'x
, 0 people 11 Location Yora Akira Minamitaku, Nara City ■11] - Ding 1
”:l Address 25 Name (244) Sekisui Plastics 1-f, 141, Ministry of Ceremony Representative Kawamoto Ken 1 Representative I 1 Location Higashi-ku, Osaka City'!, r (ta 3-] [l
68th number 6,? +n Positive content (1) Description of [cutter, or ike-1] of description drawing 21 fungus 13b, [cutter, rectangular or other circumferential ih′i-shaped recessed part by heat melting] 1-piece heat cutter, or 1
1. , l and reduction Jru.

Claims (1)

[Claims] 1. A container supply section and a lip winding section are arranged side by side, and a movable table is installed below between the supply section and the winding section, A curling mold with a winding groove formed thereon is provided on the movable table, and the winding groove can be heated.A plug mold that can be fitted into the inner surface of the container is rotatably provided in the center of the curling mold. A vacuum suction hole is provided on the surface, and a container feeder (d) is provided above the feeding section that can feed containers one by one onto the plug mold. A cavity mold that can be inserted is provided so that it can be raised and lowered and rotated, and a vacuum suction hole is provided on the inner surface of the cavity mold.Furthermore, at a position on the movable table where it can come into contact with the side wall of the container, there is a hole on the outer periphery of the side wall that is bent from the pond part. A rim winding device for a foam sheet container, characterized in that it is provided with a winding base point forming member such as a cutter knife that forms a winding base point such as an easy cut.2. Two winding sections are arranged symmetrically on the left and right, and on the movable table there are two sets of curling and plug types that can be moved alternately between the central feeding section and the left and right winding sections. A rim winding device for a foam sheet container according to claim 1 is provided. 6. A mandrel mold that can be fitted into the inner surface of the container is provided adjacent to the curling mold and the plug mold on the movable table, The mandrel mold is capable of moving freely between the winding section and the container recovery section for applying external force to the winding section as the movable table moves. 4. A rim-rolling device for a foam sheet container container according to claim 6, wherein a suction chute for collecting containers is provided above the container storage part, and an air blowing hole is provided in the upper surface of the mandrel mold. 5. A rim winding device for a foam sheet shank container according to claim 1 above, which has a supply hole for a lubricant or the like on the inner surface of a winding groove provided in a curling mold. 6 Above the supply section 2. A rim winding device for a foamed sheet container according to claim 1, wherein a rim feeder is provided as a container feeding mechanism.