GB2206072A - Cutting device - Google Patents

Cutting device Download PDF

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Publication number
GB2206072A
GB2206072A GB08728288A GB8728288A GB2206072A GB 2206072 A GB2206072 A GB 2206072A GB 08728288 A GB08728288 A GB 08728288A GB 8728288 A GB8728288 A GB 8728288A GB 2206072 A GB2206072 A GB 2206072A
Authority
GB
United Kingdom
Prior art keywords
blade
cutting device
cutting
drum
blade holder
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.)
Granted
Application number
GB08728288A
Other versions
GB2206072B (en
GB8728288D0 (en
Inventor
Werner Hinz
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.)
Koerber AG
Original Assignee
Koerber AG
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 Koerber AG filed Critical Koerber AG
Publication of GB8728288D0 publication Critical patent/GB8728288D0/en
Publication of GB2206072A publication Critical patent/GB2206072A/en
Application granted granted Critical
Publication of GB2206072B publication Critical patent/GB2206072B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/47—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces
    • A24C5/471—Attaching filters or mouthpieces to cigars or cigarettes, e.g. inserting filters into cigarettes or their mouthpieces by means of a connecting band
    • A24C5/473—Cutting the connecting band
    • 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
    • B26D1/25—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 non-circular cutting member
    • B26D1/34—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 non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—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 non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like

Abstract

The blade holder (14) of a blade (2) on a blade drum (1), for cutting small sections of tipping paper for filter-tipped cigarettes, has an opening (21) centrally in the area of its radial support, whereby a transverse beam (22) resilient in the radial lane is formed so as to damp the cutting pressure or the impact caused when the cutting edge (16) strikes an anvil drum. <IMAGE>

Description

CUTTING DEVICE FOR SEPARATING SECTIONS FROM A MOVING STRIP OF MATERIAL The invention relates to a cutting device for separating sections from a moving strip of material, in particular for separating small leaves of a coating (tipping) paper strip in a filler application machine of the tobacco processing industry, with a rotating cutting drum, over the peripheral surface whereof the strip of material is guided, and with a rotating blade drum which has at least one blade held in a radial plane so as to tilt, the cutting edge of which blade separates one section from the strip of material each time it rotates on the cutting drum.
The object of the invention is to reduce the ear on the blade of a blade drum as Indicated above or to increase its service life.
This object is achieved according to the invention in that the blade is united with a transverse beam which is resilient in the radial plane when the cutting edge strikes the cutting drum.
According to a preferred embodiment, the blade is located so as to tilt around a bearing located in the area of its axis of symmetry, in the radial plane which cuts the axis of the blade drum.
According to an advantageous embodiment, the beam is formed in the simplest way by an opening in the blade holder.
Resilient cushioning of the cutting pressure of the cutting edge is then achieved in optimum fashion if, according to one embodiment, the opening extends essentially longitudinally and in the vicinity of the edge of the blade holder remote from the cutting edge, whereby according to an additional proposal the opening runs symmetrically to the bearing of the blade.
According to a special embodiment, the blade holder comprises at least two parts, which are combined by means of a layer of solder along a soldered seam. By means of such a layer of solder of determined thickness an additional damping effect is achieved in the cutting process.
With such a two-part embodiment of the blade holder an advantageous development has the opening penetrating both parts of the blade holder substantially in the region of the plane of the soldered seam.
In order to optimise on the one hand the resilience of the blade and on the other hand its durability, an advantageous development provides that that the opening or the transverse beam has a shape which matches the bending stress of the blade holder material.
The advantage achieved with the invention s that on each cut the impact produced by the surface of the blade drum on the blade is resiliently absorbed and thus its effect on the cutting edge is reduced in such a way that the wear to the edge is reduced, the blade has to be adjusted less frequently and its service life is thus considerably extended.
The inherent elasticity imparted by the means according to the invention to the blade holder in the radial load plane of the blade drum also makes the blade holder unsusceptable to breakdown, as external radial spring elements become superfluous with this development.
The invention is described in greater detail below, with reference to the embodiment examples represented in the drawings, wherein Fig. 1 shows a partial longitudinal section of a blade drum executed according to the invention, Fig. 2 shows a side view of a blade inserted ln the blade drum according to Fig. 1, and Fig. 3 shows an alternative embodiment of a blade.
The blade drum 1, shown in Fig. 1 as part Os a cutting device of a coating (tipping) paper guide of a filter application machine, is associated in a known manner not shown, for example according to DE-OS 32 i9 046, with a cutting drum for depositing and guiding a strip of coating paper not shown in the drawing, which strip is guided between the blade drum 1 and the cutting drum. The blade drum 1 carries on its periphery, in grooves parallel to the axis and at a uniform angular distance from one another, blades 2, whereof only one blade is shown in Flg. 1.
The blade 2 is pivotally mounted in its groove.
For this, in an annular groove in the body of the blade drum 1, a support element 3 constituting a bearing is inserted, which element supports the blade 2 approximately in the centre or in the area of its axis of symmetry. A wedge-shaped, bevelled lower edge 4 of the support element 3 corresponds to a wedge-shaped diagonal plane of reference 5 of an adjusting wedge 7 in an axis-parallel bore of the blade drum body, axially adjustable against the force of a spring 6. For the axial adjustment of the adjusting wedge 7 a setscrew 8 is provided, which co-operates with a nut 9. To adjust the height of the blade 2, the adjusting wedge 7 is moved by means of the setscrew 8 in an axial direction, whereby the inclined lower edge 4 of the support element 3 slides on the diagonal reference plane 5. The support element 3 is thus moved further radially either out of the annular groove or into it.The position of the blade is thus adjusted accordingly.
The blade 2 is also spring-loaded endwise. For this purpose a flat spring 11 engages with a blade end, which has a convex projection 10, said spring in turn being under the influence of a compression spring 12, which arranged in a housing ring 13 on the end of the blade drum 1. The pressure of the springs 11, 12 is selected to that at the time of the first cut the blade 2 can easily align itself parallel to tne surface of the cutting drum while retaining its position under the action of the springs. In this way no noise is caused by the blade subsequently striking the surface of the cutting drum on cutting, and by the strike-back of the blade against the floor of the groove or against the support element 3, since the blade is held securely in the position it takes up at the time of the first cut.
The blade 2 inserted in the blade drum i in the embodiment according to Fig. 1 consists of a two-part blade holder 14 and a transverse cutter beam 15 supported by the blade holder 14, with a cutting edge 16. The two parts 17 and 18 of the blade holder 14 are combined by means of a relatively thick layer of solder 19 along a soldered seam 20. In the area of the soldered seam 20, the two blade holder parts 17 and 18 are provided with an elongate opening 21, which extends continuously and symmetrically to both sides of the support element 3.In this way an elastic transverse beam 22 is created in the bearing area or the support bearing area of the blade holder 14, which beam permits an elastic resilience of the blade holder 14 at each cutting process of the blade 2 striking the blade drum, as a result of which the cutting edge 16 of the blade 2 is conserved, which increases the service life of the blade. According to the material composition of the blade holder 14 according to Fig. 1, the opening 21 is created in such a way that the beam 22 has the largest cross-section in the area of the centre line or axis of symmetry of the blade 2. The relatively thick layer of solder 19 has an additional absorbent effect, which also helps to conserve the blade.
Depending on another material composition of the one-piece blade holder 14 according to Fig. 3, the opening 21 can also assume the shape shown therein with slot walls running parallel. The recesses 23 in the blade holder 14 shown in Fig. 1 serve only to reduce the weight of the blade 2.

Claims (9)

1. Cutting device for separating sections from a moving strip of material, in particular for separating small leaves of tipping material from a strip of tipping paper in a filter application machine of the tobacco processing industry, comprising a rotary cutting drum with a peripheral surface over which the strip of material is guided in use, and a rotary blade drum with at least one blade tiltably held in a radial plane and having a cutting edge for separating one section from the strip of material each time it rotates on the cutting drum, wherein a transverse beam is united with the blade so as to be resilient in the radial plane when the cutting edge of the blade strikes the cutting drum.
2. Cutting device according to claim 1, wherein the blade is supported so as to tilt around a bearing arranged in the region of its axis of symmetry, in the radial plane which cuts the axis of the blade drum.
3. Cutting device according to claim 1 or 2, wherein the beam is formed by an opening in the blade holder.
4. Cutting device according to any one of claims 1 to 3, wherein the opening extends substantially longitudinally and in the vicinity of the edge of the blade holder remote from the cutting edge.
5. Cutting device according to any one of claims 1 to 4, wherein the opening extends symmetrically to the bearing of the blade.
6. Cutting device according to any one of claims 1 to 5, wherein the blade holder comprises at least two parts which are combined by means of a layer of solder along a soldered seam.
7. Cutting device according to any one of claims 1 to 6, wherein the opening traverses both parts of the blade holder in the region of the plane of the soldered seam.
8. Cutting device according to any one of claims 1 to 7, wherein the opening or the beam has a shape corresponding to the bending stress of the blade holder material.
9. A cutting device substantially as herein described with reference to the accompanying drawings.
GB8728288A 1986-12-04 1987-12-03 Cutting device for separating sections from a moving strip of material Expired - Lifetime GB2206072B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863641487 DE3641487A1 (en) 1986-12-04 1986-12-04 CUTTING DEVICE FOR SEPARATING SECTIONS FROM A MOVING MATERIAL STRIP

Publications (3)

Publication Number Publication Date
GB8728288D0 GB8728288D0 (en) 1988-01-06
GB2206072A true GB2206072A (en) 1988-12-29
GB2206072B GB2206072B (en) 1991-01-16

Family

ID=6315490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8728288A Expired - Lifetime GB2206072B (en) 1986-12-04 1987-12-03 Cutting device for separating sections from a moving strip of material

Country Status (3)

Country Link
DE (1) DE3641487A1 (en)
GB (1) GB2206072B (en)
IT (1) IT1223353B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9896294B2 (en) 2012-12-13 2018-02-20 British American Tobacco (Investments) Limited Apparatus for processing a moving web of material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3928594A1 (en) * 1989-08-29 1991-03-07 Strecker Valmet KNIFE DRUM FOR ROTATIONAL CONTINUOUS CUTTERS WITH SHEARING CUT
DE102007059625B4 (en) * 2007-12-10 2013-07-25 Hauni Maschinenbau Ag Strand cutter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB878556A (en) * 1957-08-21 1961-10-04 Hauni Agency Inc Improvements in cutter drums for strip material
GB934295A (en) * 1961-07-03 1963-08-14 Eryk Stefan Doerman Improvements in or relating to cutting apparatus
GB2099746A (en) * 1981-06-05 1982-12-15 Hauni Werke Koerber & Co Kg Apparatus for severing running webs of tipping paper or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB878556A (en) * 1957-08-21 1961-10-04 Hauni Agency Inc Improvements in cutter drums for strip material
GB934295A (en) * 1961-07-03 1963-08-14 Eryk Stefan Doerman Improvements in or relating to cutting apparatus
GB2099746A (en) * 1981-06-05 1982-12-15 Hauni Werke Koerber & Co Kg Apparatus for severing running webs of tipping paper or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9896294B2 (en) 2012-12-13 2018-02-20 British American Tobacco (Investments) Limited Apparatus for processing a moving web of material

Also Published As

Publication number Publication date
DE3641487A1 (en) 1988-06-16
IT1223353B (en) 1990-09-19
GB2206072B (en) 1991-01-16
IT8722607A0 (en) 1987-11-12
GB8728288D0 (en) 1988-01-06

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PCNP Patent ceased through non-payment of renewal fee