Automatic sizing cutting device

Patent metadata

Field	Value
Publication number	US-10828794-B2
Application number	US-201616092486-A
Country	US
Kind code	B2
Filing date	Apr 12, 2016
Priority date	Apr 12, 2016
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

An automatic sizing cutting device includes a conveyance unit, a measuring device, a rotary cutter arranged downstream of the conveyance unit so as to oppose a band-shaped member and having a cutting blade on an outer circumferential surface thereof, a die roller which is arranged on a side of the band-shaped member opposite to the rotary cutter and which rotates in a direction opposite to a rotation direction of the rotary cutter; and an elastic member which urges the die roller toward the rotary cutter. The rotary cutter is controlled to rotate in accordance with a conveyed length of the band-shaped member measured by the measuring device, and is controlled such that circumferential speeds of the rotary cutter and the die roller when the cutting blade of the rotary cutter cuts the band-shaped member are equal to a conveying speed of the band-shaped member.

First claim

The invention claimed is:

1. An automatic sizing cutting device for cutting a continuously supplied band-shaped member at a predetermined length to obtain a band-shaped piece, comprising:
a conveyance unit which conveys the band-shaped member;
a measuring device which measures a conveyed length of the band-shaped member conveyed by the conveyance unit;
a rotary cutter arranged downstream of the conveyance unit so as to oppose one surface of the band-shaped member and having at least one cutting blade on an outer circumferential surface thereof, the rotary cutter being rotationally driven by a driving motor;
a die roller arranged on a side of the band-shaped member opposite to the rotary cutter, and which rotates in a direction opposite to a rotation direction of the rotary cutter; and
an elastic member which urges the die roller toward the rotary cutter,
wherein the rotary cutter is controlled to rotate in accordance with the conveyed length of the band-shaped member measured by the measuring device, and is controlled such that circumferential speeds of the rotary cutter and the die roller at least when the cutting blade of the rotary cutter cuts the band-shaped member are equal to a conveying speed of the band-shaped member.

2. The automatic sizing cutting device according to claim 1 , wherein
the rotary cutter and the die roller are driven by one driving motor to be rotated at the same circumferential speed in directions opposite to each other.

3. The automatic sizing cutting device according to claim 1 , further comprising:
a support member rotatably supporting the die roller, the support member configured to swing about a swing shaft and to be urged by the elastic member so as to swing about the swing shaft; and
a gear mechanism arranged between a rotation shaft of the die roller and the swing shaft, wherein
the swing shaft is rotated by the driving motor,
the die roller is rotated as rotation of the swing shaft is transferred thereto via the gear mechanism, and
the die roller is urged toward the rotary cutter as the elastic member urges the support member.

4. The automatic sizing cutting device according to claim 3 , wherein
the driving motor is connected to a cutter shaft of the rotary cutter, and
a power of the driving motor is transferred to the swing shaft via a timing belt spanned over pulleys respectively fixed on the cutter shaft and the swing shaft.

5. The automatic sizing cutting device according to claim 1 , wherein
the conveyance unit includes a pair of feed rollers driven by a pair of motors respectively, and a pair of follower rollers arranged to oppose the pair of feed rollers respectively, and which conveys the band-shaped member while sandwiching the band-shaped member between the feed rollers and the follower rollers,
the measuring device is arranged between the pair of feed rollers, and
rotation speeds of the pair of feed rollers are set such that a rotation speed of the feed roller arranged on a downstream side is faster than a rotation speed of the feed roller arranged on an upstream side, so as to convey the band-shaped member while applying a tension to the band-shaped member.

Assignees

• Ykk Corp

Inventors

• Okabe Katsuro
• Takase Kazuya

Classifications

• B26D5/00

  Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting · CPC title

• B26D7/20

  Cutting beds {(B26D7/018 takes precedence; supporting beds for severing by means of a fluid jet B26F3/008)} · CPC title

• B26D1/36

  and rotating continuously in one direction during cutting, e.g. mounted on a rotary cylinder (for flying cutting B26D1/62) · CPC title

• B26D1/62

  and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder · CPC title

• B26D5/20

  with interrelated action between the cutting member and work feed · CPC title