JP2016083830A - Deposition apparatus and deposition method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an exterior film or a front end wrapping film from being wrinkled and damaged.SOLUTION: A deposition apparatus 10 includes: a deposition roller 12 that has a rotation center axis C and is circular in cross section in a right angle direction with respect to the rotation center axis C; support members 14 and 16 to rotatably support the deposition roller 12 around the rotation center axis C; three heaters 18 to transmit heat to the deposition roller 12; and a heater holding member 20 to hold the haters 18 adjacently to the deposition roller 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a welding apparatus and a welding method for winding a resin film around a core or a wound body in the manufacture of a wound product for forming a capacitor or a battery.

  Conventionally, a wound product is manufactured by winding a belt-like pre-wound film (resin film), two element films, and an exterior film (resin film) on a winding core, and then at both ends in the central axis direction of the wound product. A metallized part is formed by thermal spraying metal, and a lead wire is welded to the metalized part to manufacture a capacitor.

  In FIG. 10, reference numeral 120 denotes a winding for manufacturing a wound product 109 by winding a pre-winding film in the pre-winding step S1, winding two element films in the main winding step S2, and an exterior film in the post-winding step S3. Device.

  In the front view of FIG. 10 in the front winding step S1, the front film 211 sent from the original fabric 201 is wound around the core 108, and in front of the front winding step S1 in FIG. The pre-winding film 212 is wound around the core 108. In the back of FIG. 10 front view of the main winding step S2, the element films 104 and 106 sent from the original fabrics 116 and 118 are wound around the outer periphery of the pre-winding film 211, and in front of the front winding step S2 of FIG. The element films 100 and 102 sent from the original fabrics 112 and 114 are wound around the outer periphery of the pre-winding film 212. In the rear view of FIG. 10 in the rear winding step S3, the exterior film 213 sent from the original fabric 203 is used. In front of the front view of FIG. 10 in the rear winding step S3, the outer film 214 sent from the original fabric 204 is used. Each is wound around the element film wound in S2.

  The exterior films 213 and 214 are made of transparent polypropylene or the like. In the post-winding step S3, the product is also discharged.

  Step S3 For mounting the exterior film 213 on the wound body 126 in the back of FIG. 10 as viewed from the front, the wound body 126 is first rotated to wind the exterior film 213 around the outer periphery of the wound body 126 and then cut by the cutter 128. A cylinder (not shown) is operated to move the welding apparatus 130 having the welding tool 132 toward the wound body 126 around which the exterior film 213 is wound, as shown in FIG. While the welding tool 132 is brought into contact with the exterior film 213 and the wound body 126 wound with the exterior film 213 is rotated, the welding tool 132 is pressed against the outer periphery of the exterior film 213, and the exterior film 213 is placed on the outer periphery of the wound body 126. Welding. Step S3 The same applies to the mounting of the exterior film 214 to the wound body 127 before the front view of FIG.

  As shown in FIGS. 11A and 11B, the welding apparatus 130 includes a welding tool 132, a welding tool holding member 134 that holds the welding tool 132, a heater 136, and a heater holding that holds the heater 136. And a member 138. The welding tool 132 has a plurality of ridges 133 that contact the exterior film 213 or 214. The heat of the heater 136 is transmitted to the welding tool 132 through the heater holding member 138 and the welding tool holding member 134.

  According to this welding apparatus 130, since the welding tool 132 contacts the resin film, the resin film is tensioned by the frictional force between the welding tool 132 and the resin film, and the resin film is distorted and wrinkled or damaged. was there.

  Various winding devices related to the manufacture of capacitors have been invented and filed by the applicant of the present application (see Patent Documents 1 to 7).

JP 2009-043540 A JP 2009-093901 A JP 2009-256022 A JP 2009-272245 A JP 2011-161557 A JP 2011-184132 A International Publication No. 2009/019781

  The objective of this invention is providing the welding apparatus and the welding method which can weld an exterior film to the outer periphery of a wound body, without a wrinkle arising in the outer periphery of an exterior film, or being damaged.

A welding apparatus according to the present invention is a welding apparatus that winds a resin film around an outer periphery of a wound body around which at least a band-shaped element film is wound, and has a rotation center axis, and a cross section in a direction perpendicular to the rotation center axis. A welding roller having a circular shape, a support member that rotatably supports the welding roller around the rotation center axis, and a heater that transfers heat to the welding roller are provided.
The element film includes a film in which a metal is attached to one side or both sides of a resin film and a film made of only a metal.
The welding apparatus of the present invention is a welding apparatus that winds a resin film wound around a winding core, and has a rotation center axis, and a welding roller having a circular cross section in a direction perpendicular to the rotation center axis, and the welding A support member that rotatably supports the roller around the rotation center axis, and a heater that transfers heat to the welding roller are provided.
The welding apparatus according to the present invention is characterized in that, in the welding apparatus, the welding roller has a plurality of ridges or protrusions that extend in a circumferential direction of the welding roller and are brought into contact with the resin film.
The welding apparatus of the present invention is characterized in that the welding apparatus includes a heater holding member that holds the heater adjacent to the welding roller.
The welding apparatus according to the present invention is characterized in that, in the welding apparatus, a plurality of the heaters are arranged along an outer circumference of the welding roller.
The welding apparatus of the present invention is characterized in that, in the welding apparatus, the welding roller has a hollow portion, and the heater is provided in the hollow portion.
The welding method of the present invention is a welding method in which a resin film is wound around the outer periphery of a wound body around which at least a band-shaped element film is wound, the step of winding the resin film around the outer periphery of the wound body, and rotation A step of transferring heat of a heater to a welding roller having a central axis and having a circular cross section in a direction perpendicular to the rotational central axis; and a resin film wound around the outer periphery of the wound body. And a step of rotating the wound body around which the resin film is wound, and the resin film is wound in a state where the welding roller is brought into contact with the wound body around which the resin film is wound. The welding roller is rotated by rotating the wound body.
The welding method of the present invention is a welding method for winding a resin film wound around a winding core, the step of winding the resin film around the outer periphery of the winding core, and a rotation center axis. A step of transferring heat of a heater to a welding roller having a circular cross section in a right angle direction, a step of bringing the welding roller into contact with a resin film wound around an outer periphery of the wound body, and winding the resin film Rotating the winding core, wherein the welding roller is rotated by rotating the winding core in a state where the welding roller is in contact with the resin film wound around the winding core. And

  According to the welding apparatus and the welding method of the present invention, the resin film wound around the wound body or the core is rotated while the welding roller is in contact with the resin film wound around the wound body or the core. As a result, the welding roller rotates. Since the welding roller rotates with the rotation of the resin film wound around the wound body or the core, no tension is generated on the resin film wound around the wound body or the core. For this reason, the resin film wound around the wound body or the core is not distorted, and the outer film is not wrinkled or broken.

It is a figure which shows the welding apparatus which concerns on this invention, the figure (a) is a front view, and the figure (b) is side sectional drawing. It is an enlarged view which shows the bush which comprises the welding apparatus of FIG. 1, The same figure (a) is a front view, The same figure (b) is side sectional drawing. It is a front view which shows the use condition of the welding apparatus of FIG. It is a figure which shows other embodiment of the welding apparatus which concerns on this invention, the figure (a) is a front view, and the figure (b) is side sectional drawing. It is a figure which shows other embodiment of the welding apparatus which concerns on this invention, The figure (a) is a front view, The figure (b) is side sectional drawing. It is side surface sectional drawing which shows other embodiment of the welding apparatus which concerns on this invention. It is side surface sectional drawing which shows other embodiment of the welding apparatus which concerns on this invention. It is a figure which shows other embodiment of the welding apparatus which concerns on this invention, The figure (a) is a front view, The figure (b) is side sectional drawing. It is a front view which shows the winding apparatus using the welding apparatus of FIG. It is a front view which shows the conventional winding apparatus. It is a figure which shows the conventional welding apparatus, The figure (a) is a side view, The figure (b) is a front view which shows a use condition.

  An embodiment of a welding apparatus according to the present invention will be described with reference to the drawings. In FIG.1 and FIG.3, the code | symbol 10 is the welding apparatus which concerns on this invention.

  The welding apparatus 10 according to the present invention has an exterior film (resin film) wound around the outer periphery of a wound body in which two strip-shaped element films are wound, or before the two strip-shaped element films are wound. And a welding device that winds the pre-wound film (resin film) wound around the core. The element film is a film obtained by depositing (attaching) a metal on one surface of a resin film.

  As shown in FIG. 1, the welding apparatus 10 has a rotation center axis C, a welding roller 12 having a circular cross section in a direction perpendicular to the rotation center axis C, and the welding roller 12 around the rotation center axis C. Support members 14 and 16 that are rotatably supported, three heaters 18 that transmit heat to the welding roller 12, and a heater holding member 20 that holds the heater 18 adjacent to the welding roller 12. ing.

  The welding roller 12 has a roller portion 24 having a plurality of protrusions 22 extending in the circumferential direction on the outer periphery in the direction of the rotation central axis C, and shaft portions 28 and 29 supported by the support members 14 and 16 via bushes 26. It is composed of The welding roller 12 is preferably made of an alloy such as iron, aluminum, stainless steel, or copper, and is a metal having high thermal conductivity. The cross-sectional shape of the ridge portion 22 is not particularly limited, such as a semicircular shape, a trapezoidal shape, and a triangular shape.

  As shown in FIG. 2, the bush 26 includes a front surface layer 30 and a back surface layer 32. The surface layer 30 is made of metal and is fixed to the inner surface of the hollow portion 34 or 36 of the support member 14 or 16. The back surface layer 32 is made of, for example, a copper-based sintered alloy in which a solid lubricant is uniformly and finely dispersed, and supports the shaft portions 28 and 29 of the welding roller 12 so as to be slidably rotatable. Although the bush 26 is adopted in consideration of heat resistance and cost, a heat-resistant bearing may be adopted.

  The heater 18 is a heater for metal heating, and is configured by, for example, covering a nickel alloy lead wire with a cylindrical stainless steel sheath while insulating the lead wire made of nickel alloy. The heater 18 can generate heat to such an extent that the welding roller 12 to which heat is transferred from the heater 18 can weld a resin film. It is desirable that the amount of heat generated by the heater 18 and the heat generation temperature can be adjusted. For example, when the resin film is made of polypropylene, the heat generation amount and the heat generation temperature of the heater 18 are adjusted so that polypropylene having a heat deformation temperature of 85 ° C. to 110 ° C. and a melting point of 165 ° C. can be welded.

  The heater holding member 20 holds the three heaters 18 adjacent to the welding roller 12 by fixing one heater 18 in each of the three hollow portions 38 arranged adjacent to the periphery of the welding roller 12. Is configured to do. The distance between the heater holding member 20 and the welding roller 12 is preferably as short as possible so that the heat of the heater 18 is easily transmitted to the welding roller 12. The heater holding member 20 is made of, for example, an alloy of iron, aluminum, stainless steel, copper, or the like, and is preferably a metal having high thermal conductivity.

  The operation in a state where the welding apparatus 10 having such a configuration is attached to the winding apparatus 120 shown in FIG. 9 will be described below. The welding device 10 is attached to the winding device 120 by fixing the heater holding member 20 to the cylinder via the fixing jig 40.

  In the back of FIG. 9 front view of the pre-winding step S1, the pre-winding film 211 sent from the original fabric 201 is wound around the core 108, and sent from the original fabric 202 in front of the front winding step S1 in FIG. The pre-wound film 212 is wound around the core 108.

  Next, in the back of FIG. 9 front view of the pre-winding step S1, a cylinder (not shown) is operated, and as shown in FIG. 3 (a), the welding apparatus 10 is directed toward the pre-winding film 211 wound around the core 108. The protrusion 22 of the welding roller 12 is brought into contact with the pre-winding film 211. Similarly, the ridge 22 of the welding roller 12 is brought into contact with the pre-winding film 212 in front of the front winding step S1 in FIG.

  The welding roller 12 is heated by the heat generated by the heater 18. Heat transfer from the heater 18 to the welding roller 12 is performed in the order of the heater 18, the welding roller 12 side portion 13 of the heater holding member 20, the air existing in the gap 19 between the welding roller 12 and the heater 18, and the welding roller 12. . Since the three heaters 18 are adjacent to the welding roller 12 around the welding roller 12, the welding roller 12 is heated to such an extent that the pre-winding film 211 or 212 can be welded. For example, when the temperature of the heater 18 is 300 ° C., the temperature of the welding roller 12 is 200 ° C. or higher at which the pre-winding film 211 or 212 made of polypropylene can be welded.

  Next, in the back of the front winding step S1 in FIG. 9, the core 108 is rotated in a state in which the ridge portion 22 is in contact with the pre-winding film 211 wound around the core 108, and accompanying this, As a result, the welding roller 12 rotates. The pre-winding film 211 wound around the winding core 108 is wound around the protruding strip portion 22 of the welding roller 12 that comes into contact therewith. In addition, the winding core 108 around which the pre-winding film 211 is wound may be rotated, and the welding apparatus 10 may be moved so that the ridge 22 is brought into contact with the pre-winding film 211. Moreover, the rotation speed of the core 108 wound with the pre-winding film 211 is not particularly limited, such as 3 or 4 rotations. Similarly, the front-winding film 212 wound around the winding core 108 is wound around the protruding strip portion 22 of the welding roller 12 in contact with the front-winding step S1 before the front view in FIG. The pre-winding films 211 and 212 wound around the core 108 are cut by a cutter.

  Next, in the back of FIG. 9 front view of the main winding step S2, the element films 104 and 106 sent from the original fabrics 116 and 118 are wound around the outer periphery of the pre-winding film 211, and the front view of FIG. In the foreground, the element films 100 and 102 sent from the original fabrics 112 and 114 are wound around the outer periphery of the pre-winding film 212. Next, the exterior film 213 sent from the original fabric 203 in the back view of the rear winding step S3 in FIG. 9 is the exterior film 214 sent from the original fabric 204 in front of the front view of FIG. , And wound on the element film wound at S2, and then cut by the cutter 128.

  Next, in the back of FIG. 9 in the post-winding step S3, a cylinder (not shown) is operated, and the welding apparatus 10 moves toward the wound body 126 around which the exterior film 213 is wound, as shown in FIG. In addition, the ridge 22 of the welding roller 12 is brought into contact with the exterior film 213. Similarly, the protrusion 22 of the welding roller 12 is brought into contact with the exterior film 214 in front of the post-winding step S3 in FIG.

  The welding roller 12 is heated by the heat generated by the heater 18. Since the three heaters 18 are adjacent to the welding roller 12 around the welding roller 12, the welding roller 12 is heated to such an extent that the exterior film 213 or 214 made of polypropylene can be welded.

  Next, in the back view of the post-winding step S3 in FIG. 9, the wound body 126 wound with the exterior film 213 is rotated in a state where the ridge 22 is brought into contact with the wound body 126 wound with the exterior film 213. As a result, the welding roller 12 rotates. The exterior film 213 wound around the wound body 126 is welded to the outer periphery of the wound body 126 by the protruding strip portion 22 of the welding roller 12 that comes into contact. In addition, the winding body 126 around which the exterior film 213 is wound may be rotated, the welding apparatus 10 may be moved, and the ridge 22 may be brought into contact with the exterior film 213. Moreover, the rotation speed of the wound body 126 around which the exterior film 213 is wound is not particularly limited, such as 3 or 4 rotations. Similarly, the exterior film 214 is welded to the outer periphery of the wound body 127 even before the front winding step S3 in FIG.

  Note that the wound product 109 on which the exterior film 213 or 214 has been welded is taken out in step S3 shown in FIG.

  According to the welding apparatus 10, the welding roller 12 rotates in accordance with the rotation of the winding core 108 around which the pre-winding film 211 or 212 is wound in the pre-winding step S1, and the exterior film 213 or 214 is wound in the post-winding step S3. Since the welding roller 12 rotates in accordance with the rotation of the wound body 126 or 127, no tension is generated in the portion of the pre-winding film 211 or 212 and the outer film 213 or 214 that contacts the protruding portion 22. Naturally, no tension is generated in a portion of the pre-winding film 211 or 212 and the exterior film 213 or 214 that does not contact the protruding strip 22. For this reason, the pre-winding film 211 or 212 and the exterior film 213 or 214 are not distorted, and the pre-winding film 211 or 212 and the exterior film 213 or 214 are not wrinkled or damaged.

  As mentioned above, although one Embodiment of this invention was described based on drawing, this invention is not limited to what was mentioned above. For example, as shown in FIG. 4, the welding apparatus 10 may include a welding roller 12, support members 14 and 16, two heaters 18, and a heater holding member 20.

  The welding roller 12 has a hollow portion 41 extending in the direction of the rotation center axis C. A bush 26 is fixed to the inner wall of the hollow portion 41.

  The support members 14 and 16 extend in the direction of the rotation center axis C, and a fixed shaft 42 arranged in the hollow portion 41 is fixed. With respect to the fixed shaft 42, the welding roller 12 and the bush 26 fixed to the back surface of the welding roller 12 are rotatable. That is, the support members 14 and 16 support the welding roller 12 in a rotatable manner.

  The two heaters 18 are heaters for metal heating, and have the same material and structure as the heater 18 shown in FIG.

  The heater holding member 20 fixes the two heaters 18 adjacent to the welding roller 12 by fixing the three heaters 18 in the two hollow portions 38 arranged adjacent to the periphery of the welding roller 12. Configured to hold.

  As shown in FIG. 5, the welding apparatus 10 includes a welding roller 12, support members 14 and 16, and one heater 18, and the welding roller 12 has a hollow portion 44 and is hollow. The welding apparatus 10 in which the heater 18 is provided in the part 44 may be used.

  The welding roller 12 has a hollow portion 44 extending in the direction of the rotation center axis C. A bush 26 is fixed to the inner wall of the hollow portion 44.

  The support members 14 and 16 extend in the direction of the rotation center axis C, and a single heater 18 disposed in the hollow portion 44 is fixed.

  With respect to the heater 18, the welding roller 12 and the bush 26 fixed to the back surface of the welding roller 12 are rotatable. For this reason, the heater 18 has an outer peripheral surface that does not wear even when the inner wall of the bush 26 slides. That is, the support members 14 and 16 support the welding roller 12 in a rotatable manner. In this case, since heat can be transmitted to the welding roller 12 by only one heater 18, the electrical cost can be reduced.

  Further, as shown in FIGS. 6A, 6B, and 6C, the welding apparatus 10 shown in FIGS. 1, 4, and 5 is replaced with the winding device 120 shown in FIG. A pair may be arranged on the front side and the back side. A pair of welding apparatus 10 is line symmetrical as shown to Fig.6 (a), (b), (c). In this case, a pair of winding cores 108 are arranged in front and back in the front view of FIG. 9, and a pair of wound products 109 are simultaneously manufactured in front and back. Further, the winding device 120 is provided with two pieces of the original fabric 112 and the like in the front and the back in the front view of FIG.

  Further, as shown in FIG. 7A, the welding roller 12 having the cylindrical roller portion 24 and not having the ridge portion 22, the support members 14 and 16, the heater 18, and the heater holding member 20 The welding apparatus 10 provided with these may be used. In this case, the entire exterior film wound around the wound body can be welded by the cylindrical roller portion 24.

  Further, as shown in FIG. 7 (b), the welding roller 12 having protrusions 22 at the two ends, support members 14 and 16, a heater 18, and a heater holding member 20 are provided. Alternatively, the welding apparatus 10 may be used. In this case, in the exterior film wound around the wound body, only the both ends in the rotation center axis direction of the wound body are welded.

  Further, as shown in FIG. 8, the apparatus includes a welding roller 12, support members 14 and 16, four heaters 18 arranged along the outer circumference of the welding roller 12, and a heater holding member 20. The welding apparatus 10 may be used. In this case, since the four heaters 18 surround the welding roller 12, the welding roller 12 can be quickly heated.

  As mentioned above, although embodiment of this invention was described based on drawing, this invention is not limited to what was illustrated. For example, in order to efficiently transmit the heat of the heater 18 to the welding roller 12, the surface of the welding roller 12 may be configured to be black. Moreover, you may weld an exterior film to the outer periphery of a wound body with the welding apparatus of this invention simultaneously with winding an exterior film on the outer periphery of a wound body. Further, the heater may be one that heats the welding roller by high frequency induction without causing contact with the welding roller by energizing a coil disposed around the welding roller.

  Moreover, you may use the welding apparatus which concerns on this invention for the winding apparatus wound by pinching | interposing a separator between the metal which adhered the metal to both surfaces of the resin film, or the metal which consists only of a metal. In this case, one separator, one element film, another separator, and another element film are wound while being overlapped.

  The welding apparatus of the present invention may cause flaws or breakage in the outer film or the first film when the outer film is welded to the outer periphery of the wound body or when the first film is welded to the outer periphery of the core. There is no. For this reason, in order to wind up an exterior film or a pre-winding film, it can utilize widely.

10: welding device, 12: welding roller, 14: support member, 18: heater, 20: heater holding member, 22: convex portion, 24: roller portion: 26: bush, 38: hollow portion, 40: fixing jig, 44: Hollow part

Claims (8)

A welding apparatus for winding a resin film around the outer periphery of a wound body wound with at least a band-shaped element film,
A welding roller having a rotation center axis and having a circular cross section in a direction perpendicular to the rotation center axis;
A support member that rotatably supports the welding roller around the rotation center axis;
A heater that transfers heat to the welding roller;
Welding device with A welding device for winding a resin film wound around a core,
A welding roller having a rotation center axis and having a circular cross section in a direction perpendicular to the rotation center axis;
A support member that rotatably supports the welding roller around the rotation center axis;
A heater that transfers heat to the welding roller;
Welding device with   The welding apparatus according to claim 1, wherein the welding roller has a plurality of convex strips or convex portions that extend in an outer circumferential direction of the welding roller and are brought into contact with the resin film.   The welding apparatus according to claim 1, further comprising a heater holding member that holds the heater adjacent to the welding roller.   The welding apparatus according to claim 1, wherein the plurality of heaters are arranged along an outer circumference of the welding roller.   The welding apparatus according to claim 1, wherein the welding roller has a hollow portion, and the heater is provided in the hollow portion. It is a welding method of winding a resin film around the outer periphery of a wound body wound with at least a band-shaped element film,
Winding the resin film around the outer periphery of the wound body;
Transferring the heat of the heater to a welding roller having a rotation center axis and having a circular cross section in a direction perpendicular to the rotation center axis;
Contacting the welding roller with a resin film wound around an outer periphery of the wound body;
Rotating the wound body wound with the resin film;
Including
A welding method in which the welding roller is rotated by rotating the wound body wound with the resin film in a state where the welding roller is brought into contact with the wound body wound with the resin film. A welding method for winding a resin film wound around a core,
Winding the resin film around the outer periphery of the core;
Transferring the heat of the heater to a welding roller having a rotation center axis and having a circular cross section in a direction perpendicular to the rotation center axis;
Contacting the welding roller with a resin film wound around an outer periphery of the wound body;
Rotating the core around which the resin film is wound;
Including
A welding method in which the welding roller is rotated by rotating the winding core while the welding roller is in contact with the resin film wound around the winding core.

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