EP0254672A2 - Dispositif de fixation de couteaux sur l'axe à couteaux d'un cutter - Google Patents

Dispositif de fixation de couteaux sur l'axe à couteaux d'un cutter Download PDF

Info

Publication number: EP0254672A2
Authority: EP; European Patent Office
Prior art keywords: piston; drive part; screwed; ring; hub body
Prior art date: 1986-05-22
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.): Granted

Application number

EP87810209A

Other languages

German (de)

English (en)

Other versions

EP0254672B1 (fr

EP0254672A3 (en

Inventor

Walter Schmidt

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

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.)

1986-05-22

Filing date

1987-04-06

Publication date

1988-01-27

1987-04-06 Application filed by Individual filed Critical Individual

1987-04-06 Priority to AT87810209T priority Critical patent/ATE58654T1/de

1988-01-27 Publication of EP0254672A2 publication Critical patent/EP0254672A2/fr

1988-09-21 Publication of EP0254672A3 publication Critical patent/EP0254672A3/de

1990-11-28 Application granted granted Critical

1990-11-28 Publication of EP0254672B1 publication Critical patent/EP0254672B1/fr

2007-04-06 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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Images

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
- B02C18/20—Sickle-shaped knives

Definitions

a device is known from DE-PS 22 12 374.
the knives are pressed axially against a shoulder by means of an annular piston on a cutter shaft of a cutter.
the ring piston can be moved on a hub body screwed coaxially into the shaft.
the cylinder chamber is connected to a chamber into which a piston screwed into the hub body with a piston rod is immersed.
the hub body is screwed into the shaft until the ring piston rests on the knives.
the piston is then screwed in, which displaces oil from the chamber into the cylinder chamber.
This device has proven very successful. However, it is somewhat difficult to correctly measure the torque on the piston, because emotionally, the effective force is often underestimated due to the low torque required.
the present invention is based on the object of developing the described device in such a way that the contact pressure on the knives can be metered precisely. This object is achieved by the characterizing features of claim 1.
FIG. 1 for the sake of a better overview, only one half of the axial section of a knife shaft 1 of a cutter with clamped knives is shown.
the cutter shaft 1 has an axial bore 2 with an internal thread 3 at its end.
a threaded pin 4 a of a hub body 4 is screwed into this.
the hub body 4 contains an axial cylinder bore 5, into which a piston 6 is inserted.
This has an inwardly projecting piston rod 6a, at the end of which is a thread 6b which engages in an internal thread of the pin 4a of the hub body 4.
a locking ring 7 is arranged, which prevents the piston 6 from being inadvertently unscrewed from the hub body 4.
the piston 6 has a cylindrical bore 25 and a coaxial threaded bore 26.
a screw plug 27 with a cylindrical shaft 28, a cylindrical head 29 and a hexagon socket 30 is screwed into the threaded bore 26.
the threaded bore 26 is connected to the chamber 5a via a transverse bore 24.
a sleeve-shaped drive part 31 with an external hexagon 32 at the end projecting beyond the piston 6 is in the bore 25 and on the head 29 rotatable and axially displaceable. Between the head 29 and a shoulder 33 of the drive part 31, a prestressed spring plate package 34 is clamped, which presses the drive part 31 against the bottom of the bore 25.
a drive ring 36 which is connected in a rotationally fixed manner to the piston 6 via a driver pin 35 and against which the drive part 31 is pressed.
the end surface 37 of the drive part 31 has a plurality of radial wedge surfaces 38 which are in engagement with corresponding counter surfaces 39 in the end surface 40 of the ring 36 (FIG. 2).
the operation of the clamping device is as follows: After the knife 20 with its clamping and spacer rings 16 to 19 have been put in place, the fully assembled and oil-filled clamping head is screwed into the thread 3 of the knife shaft 1 and tightened by hand as far as possible. Now a key is attached to the hexagon 32 of the drive part 31 and the piston 6 is screwed into the cylinder bore 5. As a result, the oil in the chamber 5a is pressurized, which also propagates into the cylinder space 10. The annular piston 8 is thereby pressed against the clamping ring 17, the axial force acting on it being increased in the ratio of the effective annular surfaces of the space 10 to the annular surface 12.
the piston 6 is first unscrewed into the end position shown in the drawing and then the entire clamping head is loosened by hand to the extent necessary for the knife change, i.e. for unhooking and pushing in and pushing out the segment-shaped, sickle-like knives 20 from and into the securing bolts 22.

Landscapes

Engineering & Computer Science (AREA)
Food Science & Technology (AREA)
Details Of Cutting Devices (AREA)
Shearing Machines (AREA)
Accessories And Tools For Shearing Machines (AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Pistons, Piston Rings, And Cylinders (AREA)
Gripping On Spindles (AREA)
Investigating Or Analysing Biological Materials (AREA)
Knives (AREA)
Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

EP87810209A 1986-05-22 1987-04-06 Dispositif de fixation de couteaux sur l'axe à couteaux d'un cutter Expired - Lifetime EP0254672B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT87810209T ATE58654T1 (de)	1986-05-22	1987-04-06	Vorrichtung zum befestigen von messern auf einer messerwelle eines kutters.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CH2074/86		1986-05-22
CH2074/86A CH669339A5 (fr)	1986-05-22	1986-05-22

Publications (3)

Publication Number	Publication Date
EP0254672A2 true EP0254672A2 (fr)	1988-01-27
EP0254672A3 EP0254672A3 (en)	1988-09-21
EP0254672B1 EP0254672B1 (fr)	1990-11-28

Family

ID=4225293

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP87810209A Expired - Lifetime EP0254672B1 (fr)	1986-05-22	1987-04-06	Dispositif de fixation de couteaux sur l'axe à couteaux d'un cutter

Country Status (5)

Country	Link
EP (1)	EP0254672B1 (fr)
AT (1)	ATE58654T1 (fr)
CH (1)	CH669339A5 (fr)
DE (1)	DE3766438D1 (fr)
ES (1)	ES2018697B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH688542A5 (de) *	1994-12-21	1997-11-14	Waelchli Hans	Vorrichtung zur Messerbefestigung an einem Kutter.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE740978C (de) *	1938-09-02	1943-11-02	Zahnraederfabrik Augsburg Vorm	Sicherheitshauptkupplung fuer Walzwerke
NL6510026A (fr) *	1965-08-03	1967-02-06
DE2212374C2 (de) *	1972-03-15	1986-01-23	C. Hoegger & Cie. AG, Gossau	Spannkopf zum Festspannen der Messersätze auf der Messerwelle einer Fleischzerkleinerungsmaschine
US3889490A (en) *	1974-05-16	1975-06-17	Felix J Nadolny	Torque control adaptor for ratchet wrench

1986
- 1986-05-22 CH CH2074/86A patent/CH669339A5/de not_active IP Right Cessation
1987
- 1987-04-06 AT AT87810209T patent/ATE58654T1/de not_active IP Right Cessation
- 1987-04-06 ES ES87810209T patent/ES2018697B3/es not_active Expired - Lifetime
- 1987-04-06 DE DE8787810209T patent/DE3766438D1/de not_active Expired - Lifetime
- 1987-04-06 EP EP87810209A patent/EP0254672B1/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0254672B1 (fr)	1990-11-28
CH669339A5 (fr)	1989-03-15
DE3766438D1 (de)	1991-01-10
ATE58654T1 (de)	1990-12-15
ES2018697B3 (es)	1991-05-01
EP0254672A3 (en)	1988-09-21

Legal Events

Date	Code	Title	Description
1987-12-12	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1988-01-27	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE
1988-08-04	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
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1989-10-25	17Q	First examination report despatched	Effective date: 19890911
1990-10-13	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1990-11-28	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE
1990-11-28	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19901128 Ref country code: GB Effective date: 19901128 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19901128 Ref country code: BE Effective date: 19901128 Ref country code: SE Effective date: 19901128 Ref country code: NL Effective date: 19901128
1990-11-28	REF	Corresponds to:	Ref document number: 58654 Country of ref document: AT Date of ref document: 19901215 Kind code of ref document: T
1991-01-04	ET	Fr: translation filed
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1991-04-16	NLV1	Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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1991-06-05	GBV	Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]
1991-09-28	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1991-09-28	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1991-11-21	26N	No opposition filed
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