JP2940258B2 - Film winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film winding device for winding an extremely thin resin film such as a laminated film capacitor around a bobbin.

[0002]

2. Description of the Related Art In a film winding device, it is necessary to cut a film that has been wound on a bobbin. However, recent thinning of the film has made it difficult to cut the film as intended. Although it is becoming difficult to automate the winding of the film, there is a demand for an automatic apparatus that can cope with the thinning of the film.

Hereinafter, an example of the above-described conventional film winding device will be described with reference to the drawings.

FIG. 3 is a schematic view of a conventional film winding device. In FIG. 3, reference numeral 9 denotes a film made of polyphenylene sulfide, and reference numeral 7 denotes an empty bobbin in which the film 9 is not wound. Reference numeral 8 denotes an actual bobbin in which the winding of the film 9 is completed. Reference numeral 1 denotes a base plate, and 2 denotes a rotary drum unit for holding the empty bobbin 7 and rotating the drum to take up the film 9 around the empty bobbin 7, and is fixed to the base plate 1. Reference numeral 3 denotes a chuck unit for taking out the actual bobbin 8 from the rotary drum unit 2. Reference numeral 6 denotes a linear motion guide for guiding the chuck unit 3 in the winding direction of the film 9, and is fixed to the base plate 1. Reference numeral 4 denotes a cylinder for moving the chuck unit 3 along the linear guide 6. Reference numeral 5 denotes a bracket which fixes the cylinder 4 and is attached to the base plate 1. Reference numeral 10 denotes a top plate. Reference numeral 12 denotes a film holder, 11 denotes a cylinder, which is fixed to the top plate 10, and a film holder 12 is attached to a tip of the cylinder 11. 16 is a cutter, 15 is an arm and a cutter 16
Is fixed so that the position of the blade of the cutter 16 is near the end surfaces of the empty bobbin 7 and the actual bobbin 8. 1
Numeral 3 is arranged so as to move in a direction in which the cutter 16 is cut by a cylinder, and an arm 15 is attached to the tip thereof. A bracket 14 fixes the cylinder 13 and is attached to the top plate 10. The operation of the conventional film winding device configured as described above will be described below.

[0005] First, the bobbin 8 on which the film 9 has been wound up is gripped by the chuck unit 3, taken out of the rotary drum unit 2, and pulled out in the opposite direction of the rotary drum unit 2. Next, the empty bobbin 7 is supplied to the empty rotary drum unit 2. The supplied empty bobbin 7 is gripped by the rotating drum unit 2. Then, the film holder 12 installed above the empty bobbin 7 is pressed against the bobbin 7 by operating the cylinder 11, and the film 9 is adhered to the empty bobbin 7 with an adhesive. Next, the cylinder 13 is operated, and the film 9 is
Cut at the same time.

[0006]

However, in the above-mentioned conventional structure, the tensioned thin film is not used.
At the same time, since the cutting is performed by the cutter 16, the tension is concentrated on the center line between the bobbins at the time of cutting. For this reason, the crack generated at the cutting edge of the cutter runs in the center between the bobbins 7 and 8, and the cutting by the crack occurs before the cutter 16 finishes cutting the film, so that the intended cutting cannot be performed. There was a problem that the winding work was hindered.

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a film winding device that can cut a thin film as intended and does not hinder the winding operation.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a film winding device according to the present invention comprises a rotating drum unit for winding a film around the bobbin by gripping and rotating the bobbin; A chuck unit that chucks the actual bobbin that has been wound, a driving unit that moves the chuck unit in the film winding direction, a film holder that sticks a film to an empty bobbin gripped by the rotating drum unit, Drive means for bringing the press into and out of contact with the empty bobbin held by the rotating drum unit, an actual bobbin on which the film has been pasted, and an unnecessary film between the empty bobbin on which the film has been wound. A nichrome wire for cutting each of the bobbins in the vicinity of each bobbin and both heater wires And each comprise a drive means for contacting and separating with respect to a film.

[0009]

According to the present invention, the resin-based thin film is cut while melting by the heating action of the heater wire, so that cracks do not grow during cutting.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a film winding device according to an embodiment of the present invention.

FIG. 1 is a schematic view of a film winding device according to an embodiment of the present invention. In FIG. 1, 26
Is a film made of polyphenylene sulfide, and 24 is an empty bobbin in which the film 26 is not wound. Reference numeral 25 denotes a bobbin in which the winding of the film 26 is completed. Reference numeral 18 denotes a base plate, and 19 denotes a rotary drum unit for holding the empty bobbin 24 and rotating the drum to wind the film 26 around the empty bobbin 24, and is fixed to the base plate 18.
Reference numeral 20 denotes a unit for taking out the actual bobbin 25 from which the film 26 has been completely wound by the chuck unit from the rotary drum unit 19. A linear guide 23 guides the chuck unit 20 in the winding direction of the film 26 and is fixed to the base plate 18. Reference numeral 21 denotes a two-stage stroke cylinder which drives the chuck unit 20 by a linear motion guide 23.
Along the axis to provide an intermediate stop during the entire travel stroke. A bracket 22 fixes the two-stage stroke cylinder 21 and is attached to the base plate 23. 27 is a top plate. 29 is a film retainer, 28 is fixed to a cylinder and a top plate 27, and a film retainer 29 is attached to the tip of the cylinder 28. Reference numeral 33 denotes a nichrome wire. Both ends of the nichrome wire 33 are connected to a power supply, and the nichrome wire 33 is heated by turning on a power switch. 34
Is a bracket made of a heat-resistant insulator, to which the nichrome wire 33 is fixed. 32 is an arm and a bracket 34
Is fixed, and the nichrome wire 33 is connected to the empty bobbin 24 and the bobbin 25.
It is adjusted and attached so that it comes near the end face of the. Numeral 30 is arranged to move the nichrome wire 33 by a cylinder in a cutting direction, and an arm 32 is attached to the tip of the cylinder 30. A bracket 31 fixes the cylinder 30 and is attached to the top plate 27.

The operation of the film winding device configured as described above will be described below with reference to FIGS.

First, the actual bobbin 25 on which the film 26 has been wound up is gripped by the chuck unit 20 and taken out of the rotary drum unit 19, and the bobbin 25 is moved in the opposite direction of the rotary drum unit 19 by the entire stroke of the two-stage stroke cylinder 21. Pull out. The supplied empty bobbin 24 is gripped by the rotating drum unit 19. Therefore,
Film holder 2 installed above the empty bobbin 24
The film 9 is pressed against the bobbin 24 by operating the cylinder 28, and the film 26 is bonded to the empty bobbin 24 with an adhesive. Next, in order to loosen the tension of the film between the empty bobbin 24 and the bobbin 25, the two-stage stroke cylinder 21 is operated to push the chuck unit 20 back to the intermediate stop position. Next, the power supply connected to the nichrome wire 33 is turned on, and the nichrome wire 33 is heated to a temperature at which the film 26 melts. After heating is completed, the cylinder 30
Is operated, and the film 26 is cut by the nichrome wire 33 at two locations near the bobbins 24 and 25 at the same time.

FIG. 2 shows a state diagram of a cut portion of the film. When the film 26 is cut by the heat of the nichrome wire 33, the film 26 is melted and melted at the moment when the nichrome wire 33 touches the film 26. At the moment the surface is separated from the nichrome wire 33, it hardens. At this time, even in the film portion in contact with the nichrome wire 33, melting and pseudo-solidification are instantaneously performed, so that the pseudo-solid portion stops the cracks and stops the growth of the cracks. Between two places can be cut at the same time as intended.

According to the above embodiment, the bobbin is provided by providing the two-stage stroke cylinder capable of stopping the chuck unit at the intermediate stop and the nichrome wire for cutting the resin film by heat. The unnecessary film in between can be cut simultaneously at two locations as intended.

[0016]

As described above, according to the present invention, the unnecessary film between the bobbins is cut at two places by using the heater wire, so that there is no growth of cracks and the film can be cut as intended. Automation can be reliably achieved. .

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a film winding device according to a first embodiment of the present invention.

FIG. 2 is a state diagram of a cut portion of a film.

FIG. 3 is a schematic diagram of a conventional film cutting apparatus.

[Explanation of symbols]

 2,23 Rotary drum unit 3,20 Chuck unit 7,24 Empty bobbin 8,25 Bobbin 9,26 Film 12,29 Film holder 16 Cutter 15 Arm 13 cylinder 21 Two-stage stroke cylinder 33 Nichrome wire 34 Block 32 Arm 30 cylinder

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65H 19/00-19/30 B26F 3/12 H01G 13/02

Claims (1)

(57) [Claims] 1. A rotary drum unit for winding a film onto a bobbin by gripping and rotating a bobbin, a chuck unit for chucking an actual bobbin on which film has been wound, and a film winding unit for winding the chuck unit. Driving means for moving in the picking direction, film holding means for sticking a film end to an empty bobbin held by the rotating drum unit, and driving means for bringing the film holding means into and out of contact with the bobbin held by the rotating drum And, for the unnecessary film between the empty bobbin on which the film has been pasted and the bobbin on which the film has been wound, a heater wire for processing each in the vicinity of each bobbin, and both heater wires are unnecessary. And a driving unit for moving the film in and out of the film.