JPS5796718A - Drum shear - Google Patents
Drum shearInfo
- Publication number
- JPS5796718A JPS5796718A JP17184280A JP17184280A JPS5796718A JP S5796718 A JPS5796718 A JP S5796718A JP 17184280 A JP17184280 A JP 17184280A JP 17184280 A JP17184280 A JP 17184280A JP S5796718 A JPS5796718 A JP S5796718A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- drum
- speed
- lower edges
- turns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To shear a sheet without causing the necessity for lowering running speed of the sheet , by accelerating tangential speed of upper and lower edges to the running speed of the sheet during a time of rotation of respective upper and lower drums by the ratio of their revolution becomes an integer.
CONSTITUTION: Numbers of teeth Z1, Z2 of a gear 10, driving a drum 2, and a gear 11, driving a lower drum 3, in a drum shear 1 are selectively formed mutually in a meshing state in such a manner that a sheet is never sheared by upper and lower edges 4 and 5 at their position of one turn of revolution before shearing opeation. If the output shaft of a driving gear 12 rotates n turns after cutting the sheet, the lower drum 3 rotates n turns while the upper drum 2 rotates n (Z2/Z1) turns. By the time the ratio of this n to n (Z2/Z1) becomes an integer, tangential speed of the upper and lower edges 4, 5 is increased to running speed of the sheet at its high speed running, when becoming an integer ratio, the upper and lower edges 4, 5 are again contacted to cut the sheet without lowering the running speed.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17184280A JPS5796718A (en) | 1980-12-04 | 1980-12-04 | Drum shear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17184280A JPS5796718A (en) | 1980-12-04 | 1980-12-04 | Drum shear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5796718A true JPS5796718A (en) | 1982-06-16 |
Family
ID=15930768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17184280A Pending JPS5796718A (en) | 1980-12-04 | 1980-12-04 | Drum shear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5796718A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5267889A (en) * | 1975-12-04 | 1977-06-04 | Kawasaki Heavy Ind Ltd | Shearing machine of rotary drum type for separation during travell |
JPS5524832A (en) * | 1978-08-07 | 1980-02-22 | Hitachi Ltd | Rotary type scanning shear |
-
1980
- 1980-12-04 JP JP17184280A patent/JPS5796718A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5267889A (en) * | 1975-12-04 | 1977-06-04 | Kawasaki Heavy Ind Ltd | Shearing machine of rotary drum type for separation during travell |
JPS5524832A (en) * | 1978-08-07 | 1980-02-22 | Hitachi Ltd | Rotary type scanning shear |
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