CA1086042A - Modified staple cutter - Google Patents
Modified staple cutterInfo
- Publication number
- CA1086042A CA1086042A CA298,922A CA298922A CA1086042A CA 1086042 A CA1086042 A CA 1086042A CA 298922 A CA298922 A CA 298922A CA 1086042 A CA1086042 A CA 1086042A
- Authority
- CA
- Canada
- Prior art keywords
- spool body
- elongate material
- layer
- cutter
- spool
- 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.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
- D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
- D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
Abstract
"Modified Staple Cutter"
ABSTRACT OF THE DISCLOSURE
The present specification describes and claims an apparatus for cutting elongate material into predetermined lengths. For example, the apparatus can be used to produce floc. The apparatus basically comprises a spool body around which the elongate material can be wound to provide a single layer of elongate material, and means for advancing said layer along the spool body towards at least one cutter blade located on the spool body in the path of the advancing layer.
ABSTRACT OF THE DISCLOSURE
The present specification describes and claims an apparatus for cutting elongate material into predetermined lengths. For example, the apparatus can be used to produce floc. The apparatus basically comprises a spool body around which the elongate material can be wound to provide a single layer of elongate material, and means for advancing said layer along the spool body towards at least one cutter blade located on the spool body in the path of the advancing layer.
Description
The present invention relates to apparatus for cutting continuous elongated material, such as ~ilamentary material, into predetermined shorter lengths.
Such apparatus when used to cut fibres, is commonly termed a staple cutter and one such known form of commercially used staple cutter is disclosed in British Patent Specification No. 1,204,363 (Eastman Kodak Company). This apparatus comprises a cutting assembly in the form of a wheel having a number of spaced apart knives located in the region of its periphery, the knife edges~projecting radially outwardly with respect to the wheel. In use, the wheel is rotated by a motor and a tow of the fibres to be cut is wound around the wheel on top of the knife edges. When a number of layers have been wound onto the wheel a pressure wheel engages the outermost layer thus pressing the innermost layer against the knife edges and cutting the fibres in this layer. The cut fibres pass between the knives inwardly of the wheel and are conveyed away from the central region of the wheel to a storage zone, preferably by the use of air currents, The main use of such apparatus is in the cutting 20 of crimped fibres, the fibres passing from a crimping machine to the apparatus and being tensioned as they are wound onto the cutter wheel, so that the crimp is removed or virtually removed ; be~ore the fibres are cut. As soon as the fibres are cut the i crimp reduces the length of the cut fibres, :Eacilitating the passage of the fibres between the knives.
Such known staple cutters cut a number of fibres at any ' one time and operate at a relatively slow peripheral speed, " ~urther, if such a staple cutter is used to cut uncrimped fibre i.e. flock, there is a tendency for the spaces between adjacent ` '.B '~ .
.; , ' ' . ' . , ~ . . :., . ~ ' . ' :
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- knives to become clogged, requiring the cutting assembly to be stopped and cleared.
An aim of the presen~ invention is to provide a staple cutter which can operate at considerably ~igher peripheral speeds than the above described known form of staple cutter and is able to produce floc without clogging.
According to the present invention there is provided an apparatus for cutting elongate material into predetermined lengths comprising a spool body around which the elongate material can be~wound to provide a layer of elongate material, an annular member located around the spool body and arranged to ` perform a pivotal motion, whereby radialiy inwardly directed fingers of the annular member, which fingers engage in slots - which extend axially in the spool body, advance the layer of elongate material along the spool body as it is wound onto the spool body, and at least one cutter provided in the path of the advancing layer.
In the preferred embodiment of the present invention the spool body is a cylindrical member~ a winding assembly being arranged to rotate around the spool body to deposit a single layer of fibre i.e. elongate material, on the spool body.
In an alternative embodiment the spool body may be rotatable relative to the winding assembly. Further, the spool body may alternatively have a square or rectanguIar transverse cross-section, or any other desired transverse cross-section.
In the preferred embodiment of the present invention the means for advancing the layer of fibre take the form of an annular member which has radially inwardly directed fingers which engage in slots in the spool body, the slots extending axially .
~ - 3 -.. ~ . . ...................................... -~: - , ~86~4~
of the spool body. The annular member is arranged to execute a pivotal movement as the winding assembly moves around the spool body, thus moving the fibres along the spool body - towards spaced apart cutters provided on the spool body.
The number and spacing of the cutters depends upon the desired length of the staple to be cut and preferably the cutters are arranged so thàt the fibre layer is advanced into a V-shaped groove defined on one-side by the spool body and on the other side by the cutting edges of the cutters. Alternatively the cutters may be arranged with their cutting edges angled away from the spool body in the direction of advancing movement of the ibre layer. If desired the cutters may be arranged to execute a reciprocating motion to aid cutting of the tow or single filament.
To retain the fibre wound onto the spool body, as a single layer, and to retain the fibre as it is being cut, retain-ing means are preferably provided and may take the form of a housing which can be fixed wi~h respect to the spool body, the housing being dimensioned to leave only a small, gap i.e. equi-` valent to one fibre layer between the spool body and the housing.
The whole apparatus is preferably located within anouter housing and the cut fibres can be entrained towards a collectionzone by air currents. Further, to drive the winding assembly or the spool body, dependent upon the embodiment under consi~leration, a torque motor may be used to advantage to main-taln a substantia~ly constant tension for the fibre wound onto the spool body.
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The apparatus of the present invention may satisfactor-ily be operated to cut a single fibre, crimped or not, at speeds considerably in excess of the operational speed of the above described kno~n staple cu~ter. The operational speeds of - apparatus according to the present invention may be of the order of 4000 to 6000 revolutions~minute. Slower speeds may be selected if cu~ting a tow of fibres.
The present invention will now be further described, by way of example, with reference to the accompanying drawing, in which -`
Figure 1 shows a cross-sectional vlew of an embodiment of the present invention.
In the accompanying drawing one embodiment of apparatus according to the present invention is illustrated. This apparatus includes an elongate spool body 1 of circular cross-section which is fixedly mounted within a stationary housing body 2, the housing body 2 having an extension 3 part ~ of which is located over the end 5 of spool body 1 to form retaining means which, when the apparatus is in use, retains a layer of fibre on the spool body.
Cutter blades 6 are mounted on the end 5 of spool body 1 with -their cutting edges lying in planes which include the longitudinal axis of spool body l. Mounted for rotation about the spool body ~,~ in the space between the housing body and the spool body, is a winding assembly in the form of a cylindrical member 7 which in-cludes a guideway 8 for the fibre to be cut. The plane of the end 9 o~ the cylindrical member 8 is angled to the longitudinal .is o~ the cylindrical member 8 and carries a bearing 10 which s~lpports aduancing means in the form of an annular member 11.
" ' ,~
,: , The annular member 11 has radially inwardly extending fingers 12 which engage in slots 13 in the spool body 1, the slots 13 extending axially of the spool body.
In use, the fibre is passed along guideway 8 and wound around the spool body 1 in region 14 thereof. The cylindrical member 7 is then rotated drawing further fibre along guideway 8 and winding it onto the spool body 1. As the cylindrical member 7 rotates relative to the spool body 1, so the annular member 11 pivots causing the layer of fibres on the spool body 1 to be ad-vanced towards the cutters 6. Continued operation causes the fibre to be pressed against the cutters 6 and to be cut, the number and spacing of the cutters 6 determining the'length of the cut fibres and the part 4 of extension 3 maintaining the single layer configuration of fibres on the spool body 1. The cut fibres are then entrained away, preferably by air currents, to a collection zone.
The cylindrical member 7 is driven by a motor (not shown) whlch is geared to edge 15 of the cylindrical member.
Alternatively, part 16 of the spool body and the cylindrical member 7, can be constructed as the stator and rotor of an electric motor. Preferably, the cylindrical member 7 is driven by or forms part of a torque motor9 this being advantageous as it will maintain a substantially constant tension for the fibre as it is wound onto the spool body at a constant rate.
A possible modification within the scope of the present invention is the provision of the cutters on the inside surface oE part ~ of extension 3 in Fig. 1. In this case the cutters preferably extend into mating slots in the surface of the spool . . . - . , .
.
, , .. : ~ , , ' ~
.
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body.
It is envisaged that the spool body 1 or the part 4 may be replaced i.e. to change the cutter spacing, to enable ` different length fibres to be produced. Further, as the cutters are preferably parallel to each other there is no danger of clogging when floc is produced.
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Such apparatus when used to cut fibres, is commonly termed a staple cutter and one such known form of commercially used staple cutter is disclosed in British Patent Specification No. 1,204,363 (Eastman Kodak Company). This apparatus comprises a cutting assembly in the form of a wheel having a number of spaced apart knives located in the region of its periphery, the knife edges~projecting radially outwardly with respect to the wheel. In use, the wheel is rotated by a motor and a tow of the fibres to be cut is wound around the wheel on top of the knife edges. When a number of layers have been wound onto the wheel a pressure wheel engages the outermost layer thus pressing the innermost layer against the knife edges and cutting the fibres in this layer. The cut fibres pass between the knives inwardly of the wheel and are conveyed away from the central region of the wheel to a storage zone, preferably by the use of air currents, The main use of such apparatus is in the cutting 20 of crimped fibres, the fibres passing from a crimping machine to the apparatus and being tensioned as they are wound onto the cutter wheel, so that the crimp is removed or virtually removed ; be~ore the fibres are cut. As soon as the fibres are cut the i crimp reduces the length of the cut fibres, :Eacilitating the passage of the fibres between the knives.
Such known staple cutters cut a number of fibres at any ' one time and operate at a relatively slow peripheral speed, " ~urther, if such a staple cutter is used to cut uncrimped fibre i.e. flock, there is a tendency for the spaces between adjacent ` '.B '~ .
.; , ' ' . ' . , ~ . . :., . ~ ' . ' :
' ` , , ' ' . ~"~ ', '' '' ~' '' ' Z
- knives to become clogged, requiring the cutting assembly to be stopped and cleared.
An aim of the presen~ invention is to provide a staple cutter which can operate at considerably ~igher peripheral speeds than the above described known form of staple cutter and is able to produce floc without clogging.
According to the present invention there is provided an apparatus for cutting elongate material into predetermined lengths comprising a spool body around which the elongate material can be~wound to provide a layer of elongate material, an annular member located around the spool body and arranged to ` perform a pivotal motion, whereby radialiy inwardly directed fingers of the annular member, which fingers engage in slots - which extend axially in the spool body, advance the layer of elongate material along the spool body as it is wound onto the spool body, and at least one cutter provided in the path of the advancing layer.
In the preferred embodiment of the present invention the spool body is a cylindrical member~ a winding assembly being arranged to rotate around the spool body to deposit a single layer of fibre i.e. elongate material, on the spool body.
In an alternative embodiment the spool body may be rotatable relative to the winding assembly. Further, the spool body may alternatively have a square or rectanguIar transverse cross-section, or any other desired transverse cross-section.
In the preferred embodiment of the present invention the means for advancing the layer of fibre take the form of an annular member which has radially inwardly directed fingers which engage in slots in the spool body, the slots extending axially .
~ - 3 -.. ~ . . ...................................... -~: - , ~86~4~
of the spool body. The annular member is arranged to execute a pivotal movement as the winding assembly moves around the spool body, thus moving the fibres along the spool body - towards spaced apart cutters provided on the spool body.
The number and spacing of the cutters depends upon the desired length of the staple to be cut and preferably the cutters are arranged so thàt the fibre layer is advanced into a V-shaped groove defined on one-side by the spool body and on the other side by the cutting edges of the cutters. Alternatively the cutters may be arranged with their cutting edges angled away from the spool body in the direction of advancing movement of the ibre layer. If desired the cutters may be arranged to execute a reciprocating motion to aid cutting of the tow or single filament.
To retain the fibre wound onto the spool body, as a single layer, and to retain the fibre as it is being cut, retain-ing means are preferably provided and may take the form of a housing which can be fixed wi~h respect to the spool body, the housing being dimensioned to leave only a small, gap i.e. equi-` valent to one fibre layer between the spool body and the housing.
The whole apparatus is preferably located within anouter housing and the cut fibres can be entrained towards a collectionzone by air currents. Further, to drive the winding assembly or the spool body, dependent upon the embodiment under consi~leration, a torque motor may be used to advantage to main-taln a substantia~ly constant tension for the fibre wound onto the spool body.
, ~. 'i j.
~ .
... .
.
-' - ' ' ' ~
z ;:~
The apparatus of the present invention may satisfactor-ily be operated to cut a single fibre, crimped or not, at speeds considerably in excess of the operational speed of the above described kno~n staple cu~ter. The operational speeds of - apparatus according to the present invention may be of the order of 4000 to 6000 revolutions~minute. Slower speeds may be selected if cu~ting a tow of fibres.
The present invention will now be further described, by way of example, with reference to the accompanying drawing, in which -`
Figure 1 shows a cross-sectional vlew of an embodiment of the present invention.
In the accompanying drawing one embodiment of apparatus according to the present invention is illustrated. This apparatus includes an elongate spool body 1 of circular cross-section which is fixedly mounted within a stationary housing body 2, the housing body 2 having an extension 3 part ~ of which is located over the end 5 of spool body 1 to form retaining means which, when the apparatus is in use, retains a layer of fibre on the spool body.
Cutter blades 6 are mounted on the end 5 of spool body 1 with -their cutting edges lying in planes which include the longitudinal axis of spool body l. Mounted for rotation about the spool body ~,~ in the space between the housing body and the spool body, is a winding assembly in the form of a cylindrical member 7 which in-cludes a guideway 8 for the fibre to be cut. The plane of the end 9 o~ the cylindrical member 8 is angled to the longitudinal .is o~ the cylindrical member 8 and carries a bearing 10 which s~lpports aduancing means in the form of an annular member 11.
" ' ,~
,: , The annular member 11 has radially inwardly extending fingers 12 which engage in slots 13 in the spool body 1, the slots 13 extending axially of the spool body.
In use, the fibre is passed along guideway 8 and wound around the spool body 1 in region 14 thereof. The cylindrical member 7 is then rotated drawing further fibre along guideway 8 and winding it onto the spool body 1. As the cylindrical member 7 rotates relative to the spool body 1, so the annular member 11 pivots causing the layer of fibres on the spool body 1 to be ad-vanced towards the cutters 6. Continued operation causes the fibre to be pressed against the cutters 6 and to be cut, the number and spacing of the cutters 6 determining the'length of the cut fibres and the part 4 of extension 3 maintaining the single layer configuration of fibres on the spool body 1. The cut fibres are then entrained away, preferably by air currents, to a collection zone.
The cylindrical member 7 is driven by a motor (not shown) whlch is geared to edge 15 of the cylindrical member.
Alternatively, part 16 of the spool body and the cylindrical member 7, can be constructed as the stator and rotor of an electric motor. Preferably, the cylindrical member 7 is driven by or forms part of a torque motor9 this being advantageous as it will maintain a substantially constant tension for the fibre as it is wound onto the spool body at a constant rate.
A possible modification within the scope of the present invention is the provision of the cutters on the inside surface oE part ~ of extension 3 in Fig. 1. In this case the cutters preferably extend into mating slots in the surface of the spool . . . - . , .
.
, , .. : ~ , , ' ~
.
~, r----~ 4 Z
body.
It is envisaged that the spool body 1 or the part 4 may be replaced i.e. to change the cutter spacing, to enable ` different length fibres to be produced. Further, as the cutters are preferably parallel to each other there is no danger of clogging when floc is produced.
:. :
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, . .
.. . ..
. ~ ~ . . .. .
' ` ' ' ' ' ' ' , ' . ' . ' . . ~ ` '
Claims (8)
1. An apparatus for cutting elongate material into predetermined lengths comprising a spool body around which the elongate material can be wound to provide a layer of elongate material, an annular member located around the spool body and arranged to perform a pivotal motion, whereby radially inwardly directed fingers of the annular member, which fingers engage in slots which extend axially in the spool body, advance the layer of elongate material along the spool body as it is wound onto the spool body, and at least one cutter provided in the path of the advancing layer.
2. Apparatus according to claim 1, wherein a winding assembly is provided, relative movement between the winding assembly and the spool body, in use, depositing a single layer of elongate material on the spool body and also causing the annular member to perform said pivotal motion.
3. Apparatus according to claim 2, wherein a torque motor produces the required relative movement.
4. Apparatus according to claim 2, wherein the winding assembly is rotatable about the spool body to thus wind a single layer of elongate material onto the spool body.
5. Apparatus according to claim 1, wherein cutter blades are mounted on the spool body, the spool body being cylindrical and the blades both lying on a circumference of the spool body and extending generally radially of the spool body.
6. Apparatus according to claim 5, wherein each cutter blade is arranged with its cutting edge inclined relative to the surface of the spool body and parallel to the longitudinal axis of the spool body.
7. Apparatus according to claim 6, wherein the cutting edge of the cutter blade is inclined against the direction of travel of the elongate material wound onto the spool body and advancing therealong.
8. Apparatus according to claim 1, wherein a housing is mounted over the spool body, the housing being dimensioned to leave a small gap between the spool body and the wall of the housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1103877 | 1977-03-16 | ||
| GB11038/77 | 1977-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1086042A true CA1086042A (en) | 1980-09-23 |
Family
ID=9978899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA298,922A Expired CA1086042A (en) | 1977-03-16 | 1978-03-14 | Modified staple cutter |
Country Status (4)
| Country | Link |
|---|---|
| CA (1) | CA1086042A (en) |
| DE (1) | DE2811491A1 (en) |
| FR (1) | FR2383873A1 (en) |
| IT (1) | IT1103551B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7802576A (en) * | 1977-05-13 | 1978-11-15 | Neumuenster Masch App | METHOD AND DEVICE FOR TREATING FIBER TIRES. |
| DE3105877A1 (en) * | 1981-02-18 | 1982-09-02 | Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster | STACKING FIBER CUTTER |
| DE3108096A1 (en) * | 1981-03-04 | 1982-09-16 | Neumünstersche Maschinen- und Apparatebau GmbH (Neumag), 2350 Neumünster | STACKING FIBER CUTTER |
| US4519281A (en) * | 1983-03-07 | 1985-05-28 | Eastman Kodak Company | Package wind cutter |
| DE9100822U1 (en) * | 1991-01-25 | 1992-02-27 | Neumag - Neumuenstersche Maschinen- Und Anlagenbau Gmbh, 2350 Neumuenster, De | |
| KR101234818B1 (en) * | 2012-09-24 | 2013-02-19 | 송종복 | Textile cutting apparatus |
-
1978
- 1978-03-14 CA CA298,922A patent/CA1086042A/en not_active Expired
- 1978-03-16 FR FR7807585A patent/FR2383873A1/en active Granted
- 1978-03-16 DE DE19782811491 patent/DE2811491A1/en not_active Withdrawn
- 1978-03-16 IT IT48465/78A patent/IT1103551B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7848465A0 (en) | 1978-03-16 |
| FR2383873B3 (en) | 1980-11-07 |
| IT1103551B (en) | 1985-10-14 |
| FR2383873A1 (en) | 1978-10-13 |
| DE2811491A1 (en) | 1978-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |