JPH0459549A - Continuous rewinder for plural roll type film - Google Patents

Abstract

PURPOSE:To prevent occurrence of a defective joint by arranging a pair of pressure applying members capable of freely opening/closing on both sides of a film rewinding route while sandwiching the route and arranging an exothermic body in at least one of these pressure applying members. CONSTITUTION:A jointing means is provided with a pair of pressure applying members 57 and 58 capable of opening/closing on both sides of a film rewinding route while sandwiching the route, and also an exothermic body 61 in at least one 57 of both pressure applying members 57 and 58. The superposed edge parts of both films W are sandwiched between these pressure applying members 57 and 58 so that these edge parts can be joined together through a process of heat seal by means of this exothermic body 61.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention provides a method for manufacturing a plurality of lidding material roll-shaped films, for example.
Concerning a continuous unwinding device for feeding a lid punching device.

BACKGROUND ART As disclosed in Japanese Patent Publication No. 56-48404, this type of device includes two or more rewinders that support two rolls of heat-adhesive film, and two or more rewinders. It consists of a rewinding means that sequentially rewinds the film one by one, and a joining means that overlaps and joins the end of the rewound film and the beginning of the film that is to be rewound, and the joining means sandwiches the film rewinding path. It is equipped with a pair of rollers that can be opened and closed on both sides of the film, and an adhesive layer is manually formed on the starting edge of the film that is about to be rewound. By closing the rollers, both films are joined with adhesive. What it does is known.

Problems to be Solved by the Invention Many heat-adhesive roll films have strong non-adhesive properties at room temperature, and bonding defects may occur. Furthermore, since the adhesive layer was formed manually, the work efficiency was poor.

An object of the present invention is to provide a continuous rewinding device for a plurality of roll-shaped films that solves the above-mentioned problems.

Means for Solving the Problems A continuous unwinding device for a plurality of roll-shaped films according to the present invention has two parts that support heat-fusible roll-shaped films one by one.
It consists of the above rewinder, a rewinding means for sequentially rewinding the film one by one from two or more rewinders, and a joining means for overlapping and joining the end of the rewound film and the beginning of the next film to be rewound. In a continuous rewinding device for a plurality of roll-shaped films, the joining means includes a pair of pressurizing members that can be opened and closed and are disposed on both sides of the film rewinding path, and at least one of the pressurizing members It is characterized by being equipped with a heating element.

Function: In the continuous rewinding device for a plurality of roll-shaped films according to the present invention, the joining means includes a pair of pressurizing members that can be opened and closed and are disposed on both sides of the film rewinding path. Since at least one of the pressure members is provided with a heating element, when the overlapped ends of both films are sandwiched between the pressure members, the ends are heat-sealed.

Example Embodiments of the invention will now be described with reference to the drawings.

As shown in FIG. 1, the lid punching machine includes an unwinding device 11 that sequentially and continuously rewinds a plurality of roll-shaped films W, and a transfer device that transports the rewound film W via a lid forming station S. A device 12, a punch 13 and a die 14 for punching a lid from a film W at a lid forming station S.
and a winding device 1 that winds up the film W with the lid punched out.
5 and more.

Although not shown in detail, the film W is made of a laminate made of aluminum foil with thermoplastic synthetic resin layers formed on both sides.

The rewinding device 11 includes two upper and lower rewinders 21 each supporting a rolled film W, a rewinding pinch roller 22 that sequentially rewinds the film W from the two rewinders 21 one by one, and a rewinding pinch roller 22 that sequentially rewinds the film W from the two rewinders 21 one by one. It is equipped with a sealing device 23 that overlaps and joins the terminal end of the film W and the starting end of the film W to be rewound next, and a marking device 24 that marks a hole at the joining location. Rewinder 21 has
Film remaining amount detector 25 and film end detector 2B
are provided for each. Further, although not described in detail, a guide roller 27 is disposed at a suitable location on the rewinding path from the rewinder 21 to the pinch roller 22.

The transfer device 12 includes a drive pinch roller 31 for transfer disposed upstream from the punch 13 and the die 14, and a driven pinch roller 32 for transfer disposed downstream from the punch 13 and the die 14. The drive pinch roller 31 is driven by a drive device 33, which will be described in detail later, at two speeds: intermittent low speed and continuous high speed. The driven pinch roller 32 is driven at the same speed as the driving pinch roller 3I. Further, a guide roller 34 is disposed upstream of the drive pinch roller 31, and the film W is hung between the guide roller 34 and the rewinding pinch roller 22 to be loosened into a U-shape, and a tension roller 35 is received at the bottom of the U-shape. ing. The tension roller 35 is equipped with upper and lower limit detectors 36,37. Based on the output signals of these rain detectors 36, 37, the rotational speed of the rewinding pinch roller 22 is controlled so that the tension roller 35 moves up and down between the upper and lower limit detectors 38, 37. There is. Furthermore, a mark detector 38 is arranged between the drive pinch roller 31 and the guide roller 34. The winding device 15 is equipped with a winder 39.

2 to 5 show details of the sealing device 23 and marking device 24 and their mounting structure.

The sealing device 23 and the marking device 24 are installed on the lifting frame 41. The elevating frame 41 includes a rectangular frame 45 that is suspended via a horizontal bar-shaped connecting member 44 from a piston rod of a fluid pressure cylinder 43 that is attached vertically downward to a horizontal support plate 42, and a pair of opposing frames. It includes a pair of horizontal guide rods 46 that are fixed to the members in parallel with each other, and a movable bar 47 that is slidably supported on both guide rods 46. A pair of vertical rods 48 are provided on the outer surface of the square frame 45 in an upwardly projecting manner, and these are slidably fitted into a guide tube 49 provided on the support plate 42. A fluid pressure cylinder 51 is attached to the inner surface of the rectangular frame 45, and its piston rod is connected to the movable bar 47.

A stopper 52 is fixed near one end of both guide rods 46, and a spring receiver 53 is fixed near the other end.

A compression spring 54 is interposed between the movable bar 47 and the spring receiver 53, surrounding the guide rod 46. Both spring receivers 53 are integrally provided with a bar 55 when the seal is in place. In the normal position of the seal, one side of the bar 55 is formed in a downwardly tapered shape.

The sealing device 23 includes a horizontal plate-shaped movable pressure member 57 attached to the movable bar 47, a fixed pressure member 58 disposed on the opposite side of the movable pressure member 57 across the film movement path, and these members. A pair of adsorption members 59 are provided directly below both pressure members 57 and 58 so as to face each other across the film movement path. A heater 61 is embedded in the movable pressure member 57. One side of the fixed pressure member 58 is formed in an upwardly tapered shape corresponding to one side of the bar 55 when the seal is placed in the normal position, and as shown in FIG. are in contact with each other.

The marking device 24 includes a round bar punch 62 and a cylindrical die 6 that are arranged directly above the pressure members 57 and 58 to face each other across the film movement path.
3 and a hydraulic cylinder 64 whose piston rod is connected to the punch 62. The punch 62 is slidably supported by a holder 65 provided on the lower surface of the connecting member 44.

A punch return spring 66 is housed within the holder 65. The die 63 is supported in a penetrating manner by a bracket 67 attached to the seal pressure receiving bar 55.

A punching waste collection box 68 is connected to one end of the die 63. Further, although not shown, when the punch 62 is inserted into the die 63, compressed air is blown out from the tip of the punch 62, and the punching waste is blown away to the collection box 68 with force.

Directly above the punch 62 and die 63, vertically opposed plate-shaped guide/heat shield plates 68 are arranged so as to face each other across the film movement path.

When the elevating frame 41 is positioned at the upper limit, the heat of the movable pressure member 57 is blocked by the guide/heat shield plate 68 and is not propagated to the film W, so that the film W is not damaged by heat. .

In FIG. 6, the drive pinch roller 31 and its drive device 33 are shown.

Transmission gears 71 are attached to both rotating shafts of the pinch roller 31 and are meshed with each other. An intermediate gear 72 is meshed with one of the transmission gears 71 . intermediate gear 7
An intermittent drive shaft 74 is connected to the rotating shaft of No. 2 via a clutch 73.
are connected. A driving gear 77 connected to the output shaft of a motor 75 via a clutch 76 is meshed with the intermediate gear 72 . The rotational speed of the motor 75 is variable, and is normally set so that the amount of film feed by the motor 75 is greater than the amount of film feed per unit time by the intermittent drive shaft 74.

As shown in FIG. 1, it is assumed that the film W being rewound from the lower rewinder 21 is being supplied to the lid punch 13 and die 14. The starting end of the film W supported by the upper rewinder 21 is suction-held by a suction member 59. Pinch roller 22 for rewinding
is continuously driven, but the transfer drive and the driven pinch rollers 31 and 32 are driven intermittently. In addition, the elevating frame 4
1 is located at the upper limit.

Now, when the remaining amount of film in the lower rewinder 21 reaches the level shown in FIG. 1, this is detected by the remaining film amount detector 25, and the elevating frame 41 is lowered based on the output signal thereof. After this, the lid punching operation continues (-). When the film W is completely rewound and the end of the film W passes the film end detector 26, it is detected by the film end detector 26. is detected, and based on the output signal, the rewinding pinch roller 22 is stopped, and then the movable pressure member 57 is moved to the fixed pressure member 5g.
At the same time, the punch 62 is pressed against the die 63.
inserted into. As a result, the end of the rewound film W and the beginning of the next rewound film W are joined in an overlapping state, and a hole is marked near the joint. In this way, when both films W are joined and marking is completed, the elevating frame 41 is raised and the rewinding pinch roller is driven to rewind the film W supported by the upper rewinder. During this time, the lid punching operation does not stop. Then, a new film W is attached to the lower rewinder, and its starting end is guided to the sealing device and held by the suction member.

When the marked hole passes through the edges of the mark detector 38, it is detected by the mark detector 38, and based on the output signal, the lid punching operation is stopped and the pinch rolls 31 and 32 are used to film the hole. Feeding stops. Then, the clutch 73 of the intermittent drive shaft 74 is disengaged, the motor 75 is engaged, and the film W is continuously fed by the motor 75 at high speed. As a result, when the film W is fed by an amount that passes the mark, punch 13 and die 14, the motor 75
6 is cut, the intermittent drive shaft 74 is engaged, and the lid punching operation is restarted.

Effects of the Invention According to the present invention, when the overlapping ends of both films are sandwiched between the pressure members, the ends are heat-sealed, which eliminates the trouble of forming an adhesive layer as in the past. Moreover, the heat-sealing method is reliable and prevents bonding defects from occurring.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is a layout diagram of the entire lid punching machine including the device according to the invention, Fig. 2 is a perspective view of the vicinity of the sealing device and marking device, and Fig. 3 is a vertical longitudinal section of the same. 4 is a vertical cross-sectional view taken along line IV--IV in FIG. 3, FIG. 5 is a horizontal cross-sectional view taken along line v-■ in FIG. 3, and FIG. 6 is a perspective view of the film transport device. It is a diagram. 11... Rewind device, 21... Rewinder, 23.
...Seal device, 57.58...Pressure member, W...
film. Agent for the above patents: Shikoku Kakoki Co., Ltd.
People Einosuke Kishimoto (3 others) 4 Ken

Claims (1)

[Scope of Claims] Two or more rewinders 21 that support heat-fusible roll-shaped films W one by one; rewinding means for sequentially rewinding the films W one by one from the two or more rewinders 21; In a continuous rewinding device for a plurality of roll-shaped films, the joining means overlaps and joins the end of the film W to be rewound and the start end of the film W to be rewound next, the joining means sandwiching the film rewinding path. and a pair of pressurizing members 57 and 58 that can be opened and closed on both sides thereof, and at least one of the pressurizing members 57 and 58 is provided with a heating element. Continuous rewinding device for roll film.