WO1995021714A1 - Rotary shearing device with one fixed and multiple planetary discs - Google Patents

Rotary shearing device with one fixed and multiple planetary discs Download PDF

Info

Publication number
WO1995021714A1
WO1995021714A1 PCT/SE1995/000119 SE9500119W WO9521714A1 WO 1995021714 A1 WO1995021714 A1 WO 1995021714A1 SE 9500119 W SE9500119 W SE 9500119W WO 9521714 A1 WO9521714 A1 WO 9521714A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting
center
disk
shears
planetary
Prior art date
Application number
PCT/SE1995/000119
Other languages
French (fr)
Inventor
Stephan OHLSTRÖM
Original Assignee
Akv-Ortic Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Akv-Ortic Ab filed Critical Akv-Ortic Ab
Priority to AU18271/95A priority Critical patent/AU1827195A/en
Publication of WO1995021714A1 publication Critical patent/WO1995021714A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D19/00—Shearing machines or shearing devices cutting by rotary discs
    • B23D19/04—Shearing machines or shearing devices cutting by rotary discs having rotary shearing discs arranged in co-operating pairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D31/00—Shearing machines or shearing devices covered by none or more than one of the groups B23D15/00 - B23D29/00; Combinations of shearing machines
    • B23D31/008—Cutting-up scrap
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter for thin material, e.g. for sheets, strips or the like

Definitions

  • the invention relates to rotary dividing disk shears for cutting narrow strips or bars of metal, plastics, etc., transversely, The cutting process is carried out between two circular, cooperating, cutting disks.
  • the dividing shears can for instance be used as waste shears for chopping waste strip edges when trimming of edges or slitting of coils.
  • the strip to be cut will be moved ahead in between the edges and when the shears move against each other then they cut the strip. If the material is fed ahead in a high speed to the cutting station and the cutting length is narrow the cutting tools must go to and fro in a very high speed, often generating high operating noise. Just when cutting off the strip in question it will be put to stop for a moment and that will also generate high noise. If for instance the shears are flying they move ahead together with the material when cutting off and then move back again to the starting-point between two cuts. The strip is able to be moved ahead without interruptions, but the shears will be more complicated to make and this pulsating movement will generate much noise. It will also be some problem to chop the material to short lengths.
  • the third type of dividing shears there are two disks rotating in the same plan but a little bit separated.
  • the cutting tools shall also be mounted in that way that their edges will be met two by two when rotating the disks and cut off the material when guiding that ahead in between the tools.
  • the periphery speed of the disks In order not to stop the material just when cutting off operation the periphery speed of the disks must be according to the speed of the strip. It will result in a high operating noise when the cutting tools meet the material surface just before the cutting operation.
  • the cut off pieces leave the cutter in a high speed and big problems are to noiseless catch them up.
  • the length of the cut off material is principally determined by the distance between the cutting tools on the disk periphery and is therefore not so very easy to vary.
  • the dividing disk shears ,1, will preferably be built up on a stand ,9.
  • R center shaft ,3, is joined to this.
  • the center shaft ,3, may be fixed or be rotated by a center cutting tool engine ,5, sometimes by way of a gear and will be fed through a feeder ,6.
  • Rt one end of the center shaft ,3, a center cutting tool ,2, is fixed.
  • In an annular path round the center cutting tool ,2, are moving a number of disk shaped cutting tools, preferably two to four ones, here called planetary cutting tools ,12, just similar to the center cutting tool ,2.
  • the planetary cutting tools ,12, and the center cutting tool ,2, is overlapping each other a little bit.
  • the clearance between the center cutting tool ,2, and the planetary cutting tools ,9, shall be adjusted in such a way, that the cutting operation will be carried out in a correct way, when the strip ,4, is cut off to pieces ,8.
  • the planetary cutting tools ,9, are joined to the ends of shafts parallel to the center shaft ,3, and are mounted to the side of a ring ,14.
  • the ring, 14, rotates in an annular path round the center shaft ,3, and is fixed to spokes ,13, which are pivoted in the center shaft ,3, or fixed to a cone also pivoted in the center shaft ,3.
  • the ring ,14 is spun round by a detached engine, the planetary cutting tool engine ,11, by way of for instance transmission belts ,10, and drives the planetary cutting tools ,14, round the center cutting tool ,2.
  • the rotation direction of the ring ,14 shall be contrary to that of the centercutting tool ,2, if this is rotated.
  • the strip ,4, for cutting to pieces ,8, is led by a fixed guide ,9, in a transversely angle in between the periphery of the center cutting tool ,2, and the inside of the ring ,14, by the cutting station.
  • the strip ,4 When the ring ,14, rotates with help of the planetary cutting tool engine ,11, the strip ,4, will be cut off at the cutting station by the in turn being planetary cutting tool ,12, and the center cutting tool ,2. Then the planetary cutting tool ,12, in question continue its course round the center cutting tool ,2.
  • the strip ,4, allows to be guided ahead again in between the center cutting tool ,2, and the ring ,14, to settled length and then again be cut off by the center cut ting tool ,2, and the following planetary cutting tool ,12. If the guide directs the material ahead at right angle to the plane surfaces of the cutting tools ,2 and 12, the cut will be in a right angel to the longitudinal direction of the strip ,4.
  • the strip ,4, will continue without any interruption even during the cutting operation.
  • the cutting length is determined by the way the strip ,4, is moved ahead in between the center cutting tool ,2, and the ring ,14, before the next cutting operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Milling Processes (AREA)
  • Turning (AREA)
  • Shearing Machines (AREA)
  • Scissors And Nippers (AREA)

Abstract

The invention relates to dividing disk shares (1) for cutting off narrow strips (4) and bars for instance to scrap or to pieces for further manufacturing (8). The cutting operation will be carried out between disk-shaped cutting tools (2 and 12). The center cutting tool (2) is fixed or rotating round a shaft (3), the others, two to four (12), are surrounding the center cutting tool (2) in an annular path. The material (4) is transversely guided into the cutting station by a guider (9). After the cutting operation the material (4) is guided ahead a determined length for cutting off by next in turn passing planetary cutting tool (12).

Description

ROTARY SHEARING DEVICE WITH ONE FIXED AND MULTIPLE
PLANETARY DISCS BRIEF DESCRIPTION
The invention relates to rotary dividing disk shears for cutting narrow strips or bars of metal, plastics, etc., transversely, The cutting process is carried out between two circular, cooperating, cutting disks. The dividing shears can for instance be used as waste shears for chopping waste strip edges when trimming of edges or slitting of coils.
BRCKGROUND TECHNICS
Dividing shears for materials moving forwards in a relatively high speed often generate disturbing noise. Often they are not feasible to chop waste strips. Three different types of shears are common.
One has two straight cutting tools, the edges of whom move parallel against each other and just when cutting they overlap each other at a very narrow distance. The strip to be cut will be moved ahead in between the edges and when the shears move against each other then they cut the strip. If the material is fed ahead in a high speed to the cutting station and the cutting length is narrow the cutting tools must go to and fro in a very high speed, often generating high operating noise. Just when cutting off the strip in question it will be put to stop for a moment and that will also generate high noise. If for instance the shears are flying they move ahead together with the material when cutting off and then move back again to the starting-point between two cuts. The strip is able to be moved ahead without interruptions, but the shears will be more complicated to make and this pulsating movement will generate much noise. It will also be some problem to chop the material to short lengths.
An other type of shears cut off the strip by rotating disks having edges round the disk's periphery. If the side plans of the disks are directed a little oblique-angled compared to the direction of movement of the material for cutting and the rotating speed is very well adjusted it is possible avoiding to stop the material when moving ahead. On the other hand the part of the strip just before the cutting station will be moved sideways during the cutting operation and then is going ahead on the other side of the shears. To get the strip back to the entrance side again it is for instance possible to let the disks be moved from each other a little bit, then let the strip go back to the entrance side of the shears and then let the disks be moved to again. This is a very complicated way and it is also difficult to execute all these different movements between two cuts when chopping. Again, another way is to let the whole shears twist just about a half turn round a vertical tap to change the entrance side. By next cut the material will be directed back to the previous entrance side. Due to that a big volume has to twist from one end to another and then back again the arrangement will be expensive and does not very well fit for chopping, most of all if the material must be directed ahead very rapidly.
By the third type of dividing shears there are two disks rotating in the same plan but a little bit separated. To the periphery of the disks there are fitted cutting tools having the direction of the edges across the material direction of movement and across the plan of the disks. The cutting tools shall also be mounted in that way that their edges will be met two by two when rotating the disks and cut off the material when guiding that ahead in between the tools. In order not to stop the material just when cutting off operation the periphery speed of the disks must be according to the speed of the strip. It will result in a high operating noise when the cutting tools meet the material surface just before the cutting operation. The cut off pieces leave the cutter in a high speed and big problems are to noiseless catch them up. The length of the cut off material is principally determined by the distance between the cutting tools on the disk periphery and is therefore not so very easy to vary.
Nowadays it is more common immediately to chop waste strips to handy pieces for charging furnaces for making new material instead of coiling them. Pieces of a length of around one decimeter are common when chopping to scrap. On the other hand when using the material for further manufacturing operations is often a claim to use shears having big capacity especially if the cutting length is narrow.
THE INVENTION
Surprisingly it has appeared a way to make rather noiseless operating shears having big capacity for transversely cutting strips and bars to short pieces of variable as well as exact lengths. The cutting operation will be carried out between diskshaped cutting tools, the center cutting tool is fixed or rotating round a shaft, the others, two to four, are surrounding the center cutting tool in an annular path.
The material of big length, the strips or bars, is guided transversely, without any movement sideways, ahead in between the center cutting tool and one of the planetary cutting tools, that is just in time to pass the cutting station. After the cutting operation the planetary tool pass by the strip to permit it to be fed one cutting length ahead before the next planetary cutting tool will be in cutting position. The invention will be described more precisely in the enclosed claims, in a more detailed description below and by help of drawings enclosed on which the shears are shown,
figure 1 from the front side,
figure 2 sideways and
figure 3 from above.
To show the bearings of some rotating means more exactly these bearing means have been drawn in cross sections,
CLOSER DESCRIPTION OF THE INVENT I ON
The dividing disk shears ,1, will preferably be built up on a stand ,9. R center shaft ,3, is joined to this. The center shaft ,3, may be fixed or be rotated by a center cutting tool engine ,5, sometimes by way of a gear and will be fed through a feeder ,6. Rt one end of the center shaft ,3, a center cutting tool ,2, is fixed. Sometimes it is necessary to vary the speed of the engine ,5, to get the cutting speed to harmonize to the speed of the fed strip or bar ,4. In an annular path round the center cutting tool ,2, are moving a number of disk shaped cutting tools, preferably two to four ones, here called planetary cutting tools ,12, just similar to the center cutting tool ,2. The planetary cutting tools ,12, and the center cutting tool ,2, is overlapping each other a little bit. The clearance between the center cutting tool ,2, and the planetary cutting tools ,9, shall be adjusted in such a way, that the cutting operation will be carried out in a correct way, when the strip ,4, is cut off to pieces ,8. The planetary cutting tools ,9, are joined to the ends of shafts parallel to the center shaft ,3, and are mounted to the side of a ring ,14. The ring, 14, rotates in an annular path round the center shaft ,3, and is fixed to spokes ,13, which are pivoted in the center shaft ,3, or fixed to a cone also pivoted in the center shaft ,3. The ring ,14, is spun round by a detached engine, the planetary cutting tool engine ,11, by way of for instance transmission belts ,10, and drives the planetary cutting tools ,14, round the center cutting tool ,2. The rotation direction of the ring ,14, shall be contrary to that of the centercutting tool ,2, if this is rotated. The strip ,4, for cutting to pieces ,8, is led by a fixed guide ,9, in a transversely angle in between the periphery of the center cutting tool ,2, and the inside of the ring ,14, by the cutting station. When the ring ,14, rotates with help of the planetary cutting tool engine ,11, the strip ,4, will be cut off at the cutting station by the in turn being planetary cutting tool ,12, and the center cutting tool ,2. Then the planetary cutting tool ,12, in question continue its course round the center cutting tool ,2. Hereby the strip ,4, allows to be guided ahead again in between the center cutting tool ,2, and the ring ,14, to settled length and then again be cut off by the center cut ting tool ,2, and the following planetary cutting tool ,12. If the guide directs the material ahead at right angle to the plane surfaces of the cutting tools ,2 and 12, the cut will be in a right angel to the longitudinal direction of the strip ,4. That will however cause the strip ,4, to be stopped for a moment and that is sometimes disturbing. If the guide is directed a little bit awry to the plane of the surface of the tools ,2 and 12, the cutting surface will also be awry compared to the longitudinal direction of the strip ,4. In this case the strip ,4, will continue without any interruption even during the cutting operation. The cutting length is determined by the way the strip ,4, is moved ahead in between the center cutting tool ,2, and the ring ,14, before the next cutting operation. That in turn of course depends on the speed of the strip ,4, number of planetary cutting tools ,12, and the rotating speed of the ring ,14, where the movement allows to be continuous or intermittent, In other words it is possible to direct the dividing shears from chopping for instance to scrap to cutting off bars of rather big length. To increase the possibility of gripping when cutting it is favorably having the planetary cutting tools , 2, rotate even between the cutting operations. To get that it is possible to use an already known holdfast coupling between the center cutting tool ,2, and the planetary cutting tool ,14, for instance a rubber disk mounted on the center cutting tool ,2. This is aimed to touch the planetary cutting tools ,12, and get them to rotate with a speed just similar to the center cutting tool ,2.

Claims

CLAIMS: 1. Dividing disk shears (1) for cutting off narrow strips and bars (4) consisting of metal, plastic, etc.,
c h a r a c t e r i z e d i n
a fixed or rotating center cutting disk (2),
one or more rotating planetary cutting disks (12), whose axis of rotation circulate round the axis of rotation of the center cutting disk (2) and
a guide (9) for feeding and guiding the material (4) through a cutting station for successively cutting the material (4) every time a planetary cutting disk (12) passes the cutting station,
2, Dividing disk shears (1) according to claim 1
c h a r a c t e r i z e d i n
that the center cutting disk (2) is fixed. 3. Dividing disk shears (1) according to claim 1
c h a r a c t e r i z e d i n
that the center cutting disk (2) is rotated by a center cutting disk motor (5) . 4. Dividing disk shears (1) according to claim 3
c h a r a c t e r i z e d i n
that the planetary cutting disks are rotated by a center cutting disk (2) through friction driving.
PCT/SE1995/000119 1994-02-15 1995-02-07 Rotary shearing device with one fixed and multiple planetary discs WO1995021714A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18271/95A AU1827195A (en) 1994-02-15 1995-02-07 Rotary shearing device with one fixed and multiple planetary discs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9400492A SE502422C2 (en) 1994-02-15 1994-02-15 Rotary split scissors with a center insert and one or more planetary inserts
SE9400492-6 1994-02-15

Publications (1)

Publication Number Publication Date
WO1995021714A1 true WO1995021714A1 (en) 1995-08-17

Family

ID=20392924

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000119 WO1995021714A1 (en) 1994-02-15 1995-02-07 Rotary shearing device with one fixed and multiple planetary discs

Country Status (3)

Country Link
AU (1) AU1827195A (en)
SE (1) SE502422C2 (en)
WO (1) WO1995021714A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858490A (en) * 2014-02-24 2015-08-26 格力电器（芜湖）有限公司 Metal inner container end socket processing device
CN113547561A (en) * 2021-07-28 2021-10-26 上海工程技术大学 Cutting device for cutting composite material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552708A1 (en) * 1966-03-05 1970-01-22 Vnii Pk I Metall Maschino Device for separating preferably predominantly metallic round billets
DE2351980A1 (en) * 1973-10-17 1975-04-30 Hans Neuner Bacon slicer with rotating cutting arm - has two cutter discs with independent rotation
GB2207381A (en) * 1987-07-22 1989-02-01 Gd Spa Transverse cutting device for travelling strip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552708A1 (en) * 1966-03-05 1970-01-22 Vnii Pk I Metall Maschino Device for separating preferably predominantly metallic round billets
DE2351980A1 (en) * 1973-10-17 1975-04-30 Hans Neuner Bacon slicer with rotating cutting arm - has two cutter discs with independent rotation
GB2207381A (en) * 1987-07-22 1989-02-01 Gd Spa Transverse cutting device for travelling strip

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DERWENT'S ABSTRACT, No. 91-229129/31, Week 9131; & SU,A,1 609 557 (CHELYABINSK POLY), 30 November 1990. *
DERWENT'S ABSTRACT, No. 92-121883/15, Week 9215; & SU,A,1 648 643 (CHELYABINSK POLY), 15 May 1991. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104858490A (en) * 2014-02-24 2015-08-26 格力电器（芜湖）有限公司 Metal inner container end socket processing device
CN113547561A (en) * 2021-07-28 2021-10-26 上海工程技术大学 Cutting device for cutting composite material

Also Published As

Publication number Publication date
AU1827195A (en) 1995-08-29
SE502422C2 (en) 1995-10-16
SE9400492L (en) 1995-08-16
SE9400492D0 (en) 1994-02-15

Similar Documents

Publication Publication Date Title
US8667876B2 (en) Pipe cutting apparatus
US9016178B2 (en) Apparatus and method for cutting tubular members
US3246553A (en) Scrap chopper
WO1995021714A1 (en) Rotary shearing device with one fixed and multiple planetary discs
KR0138471B1 (en) High speed shear for end trimming rods and the like
US3752024A (en) Cutting mechanism for rotary knife cutting machines
US3121361A (en) Shearing machine with rotating and translating blades
CN105312987B (en) Disk is vertical, and knife is horizontal cuts straight knife milling drum
CA2010091A1 (en) Tube cutting apparatus and methods
CA1086042A (en) Modified staple cutter
US4210050A (en) Cutting device with rotating cutters
US3218898A (en) Rotating tools and grinders mounted on revolving toolholder for cutting artificial filaments
GB1357060A (en) Apparatus for cutting rings from tubes
US2318904A (en) Cutting machine
EP0483076A2 (en) New super-rapid centrifugal system for the cutting and preparation of pipes
US4114493A (en) Cutting device with rotating cutters
US2082833A (en) Method and apparatus for cutting
US3555952A (en) Hammer shears for rolled stock moving at high speed
GB1600829A (en) Flying shear mechanism and a wire cutting-off machine including the mechanism
CN106003208A (en) Plastic particle stirring device
US3316811A (en) Method and apparatus for forming shoulder pads
US3297068A (en) Machine for cutting material into strips
US4459892A (en) Method and apparatus for severing stranded cable
EP4197693A1 (en) Operating device with differentiated rotational speed outputs and machine tool including such operating device
CN205835486U (en) Plastic grain agitating device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA EE FI JP LT LV NO PL RU US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA