EP0819505A1 - Film cutting machine - Google Patents
Film cutting machine Download PDFInfo
- Publication number
- EP0819505A1 EP0819505A1 EP96111729A EP96111729A EP0819505A1 EP 0819505 A1 EP0819505 A1 EP 0819505A1 EP 96111729 A EP96111729 A EP 96111729A EP 96111729 A EP96111729 A EP 96111729A EP 0819505 A1 EP0819505 A1 EP 0819505A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- band
- push piece
- blade
- rotary blade
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
-
- 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
- B26D1/38—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 fixed blade or other fixed member
- B26D1/385—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 fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
-
- 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
- B26D7/08—Means for treating work or cutting member to facilitate cutting
-
- 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
- B26D7/08—Means for treating work or cutting member to facilitate cutting
- B26D2007/082—Guiding or pushing a web into a favorable position by deflector means
Definitions
- the present invention relates to a film cutting machine for use in forming a package film with tear tape such as a cellophane or polypropylene film which is for covering a packaged article such as a package of cigarettes. More particularly, the invention is concerned with a film cutting machine wherein a rotary blade and a fixed backup blade are disposed opposingly so as to sandwich a band-like film feed path, whereby a band-like film being conveyed is held between the rotary blade and the fixed backup blade and is thereby cut linearly in the width direction and is separated from the film band.
- a band-like film with tear tape is continuously fed downward with operation of a pair of feed rollers disposed downstream of a rotary roller and a backup roller, the rotary roller being projectingly provided with a generally U-shaped cutting edge portion, the band-like film passes in a sandwiched fashion between the rotary roller and the backup roller, whereupon the cutting edge portion of the rotary roller is pressed against the backup roller through the film to make a generally U-shaped cut in the film.
- the rotary blade and the fixed backup blade are disposed opposingly to each other, and on a downstream side thereof is provided a transfer path for an article to be packaged perpendicularly to the band-like film feed path.
- the front face of the to-be-packaged article is moved horizontally and pushed against the band-like film which has been fed up to a predetermined position, whereby the band-like film is wound in ⁇ shape around the article while being pulled down.
- the rotary blade and the fixed backup blade sandwich the band-like film therebetween to make a linear cut continuous to the aforesaid generally U-shaped cut, which cut portion is separated from the band- like film.
- the first object of the present invention to hold the front end portion of a band-like film along the film feed path without being entangled after cutting.
- the present invention is characterized in that a push piece for opposition to and abutment with the film front end portion which has been moved after cutting is attached to a rotary holder provided projectingly with a rotary blade so that it is positioned on an upstream side in the rotating direction with respect to the rotary blade, and that there is provided an eject means for ejecting the push piece, with rotation of the rotary holder, toward a band-like film feed path from a rotation track of the rotary blade edge in a predetermined section after passage of the film through the film cutting position between the rotary blade and a fixed backup blade.
- the eject means prefferably have a fixed cam for engagement with a follower connected to the push piece.
- the band-like film which is passing between the rotary blade and the fixed backup blade is cut by both blades, and in a predetermined section after passage of the film through the film cutting position the push piece is ejected from the rotation track of the rotary blade edge toward the band-like film feed path by means of the eject means, so that the push piece strikes against the front end portion of the band-like film being delivered after cutting and separates it from the rotary holder, which film is then conducted to the feed path.
- the front end portion of the band-like film delivered after cutting can be conducted along the film feed path without entanglement.
- the front end portion of a band-like film delivered after cutting may be wound onto the outer periphery of the rotary holder, or the film front end may be adhered to and entangled on the rotary blade edge when the edge speed is lower than the film delivery speed, it is not necessary to urgently stop the operation of the cutting machine for removal of the entangled film, thus permitting continuous operation.
- a hold and transfer means for holding the band-like film delivered after cutting and transferring it in the film delivery direction be disposed on a downstream side in the film delivery direction with respect to the fixed backup blade and along the band-like film feed path so as to become opposed to the film front end pushed by the push piece.
- the hold and transfer means for holding the band-like film delivered after cutting and transferring it in the film delivery direction is disposed on a downstream side in the film delivery direction with respect to the fixed backup blade and along the film delivery path so as to become opposed to the film front end which is pushed by the push piece, the film front end pushed in a direction away from the rotary holder by the push piece is conducted along the film feed path and is delivered to the hold and transfer means.
- the front end portion of the band-like film delivered after cutting can be transferred surely up to the object position while preventing entanglement thereof completely, and consequently it is possible to prevent accidents, e.g. defective package.
- a pair of feed rollers C, C are disposed in a sandwiching relation to a feed path B for a band-like film A, and on the upstream side of the feed rollers C, C are disposed a rotary roller (not shown) and a backup roller (not shown), whereby the band-like film A, which is provided with tear tape A having a generally U-shaped cut D1, is fed downward in a continuous manner.
- a rotary holder 2 provided projectingly with a rotary blade 1 and a fixed backup blade 3
- further downstream of the rotary blade 1 and fixed backup blade 3 is horizontally disposed a to-be-packaged article transfer path (not shown) orthogonal to the feed path B, whereby the front face of the article to be packaged which has been moved horizontally is pushed against the band-like film A which has been fed up to a predetermined position, thereby allowing the film A to be wound in U shape around the body of the article while pulling the film downward.
- the rotary blade 1 and the fixed backup blade 3 sandwich the film A therebetween, make a linear cut D2 therein in the width direction which cut is continuous to the generally U- shaped cut D1.
- the rotary holder 2 is formed in a cylindrical shape, and a push piece 4 for opposition to and abutment with a front end A1 of the band-like film A delivered after cutting with the rotary blade 1 and fixed backup blade 3 is disposed on the rotary holder on an upstream side in the rotating direction of the rotary holder with respect to the position where the rotary blade 1 is mounted movably for adjustment.
- the push piece 4 is projectingly provided horizontally at the base end of the push piece 4 and rotatably in parallel with the rotary blade 1 and a central rotating shaft 2a of the rotary holder 2, whereby the push piece 4 is supported pivotably so that a front end portion 4b thereof pops in and out of a rotation track 1b of an edge 1a of the rotary blade 1.
- the push piece 4 is arranged in a plural number at appropriate intervals in the axial direction of the support shaft 4a.
- an eject means 5 for ejecting the push pieces 4 from the rotation track 1b of the blade edge 1a toward the feed path B in a predetermined section after passage of the film through a film cutting position P where the film is cut by both rotary blade and fixed backup blade 3 with rotation of the rotary holder 2.
- the eject means 5 is composed of a swing lever 5a provided projectingly at one end of the support shaft 4a, a follower 5b, e.g. driven roller, connected to the swing lever 5a, a fixed cam 5c, e.g. plate cam, connected to a bearing portion 2b which supports the rotating shaft 2a of the rotary holder 2, and a resilient member 5d, e.g. spring, for urging the follower 5b toward the fixed cam 5c at all times.
- a swing lever 5a provided projectingly at one end of the support shaft 4a
- a follower 5b e.g. driven roller
- a fixed cam 5c e.g. plate cam
- a resilient member 5d e.g. spring
- the fixed cam 4c controls the position of the follower 5c so that the front end 4b stands by inside the rotation track 1b of the blade edge 1a as in Fig.4.
- the fixed cam 5c controls the position of the follower 5b so that the front end 4b of the push piece 4 is projected little by little toward the feed path B from the rotation track 1b of the edge 1a of the rotary blade 1 as in Figs.1 and 5. And before arrival of the push piece front end 4b from this position again at the film cutting position P the fixed cam 5c controls the position of the follower 5b so that the front end 4b sinks inside the rotation track 1b of the blade edge 1a gradually.
- the hold and transfer means 6 is for holding the band-like film A delivered after cutting and transferring it in the film feed direction. It is disposed along the film feed path B on the downstream side in the film feed direction with respect to the mounted position of the fixed backup blade 3 in such a manner that an upstream end 6a thereof is opposed to the front end A1 of the band-like film A which is pushed with the front end 4b of the push piece 4 ejected by the eject means 5.
- the hold and transfer means is a vacuum belt having a plurality of suction holes 6, as shown in Fig.1, and is arranged in a plural number in the width direction of the band-like film A, whereby the band-like film A which has been fed by the operation of the feed rollers C, C is held by suction and it front end A1 is transferred up to a predetermined position below the transfer path of the article to be conveyed.
- a fixed guide 7 With the film feed path B interposed between it and the upstream end 6a.
- the guide 7 is positioned as close as possible to a projecting rotation track 4c of the front end 4b of the push piece 4 within a range not interfering with the rotation track 4c, as shown in Fig.5.
- the front end 4b of the push piece approaches the film cutting position P.
- the front end 4b since the front end 4b is held inside the rotation track 1b of the edge 1a of the rotary blade 1 by the fixed cam 5c and the follower 5b of the eject means 5, as shown in Fig.4, it passes the position P without abutment with the fixed backup blade 3.
- the front end 4b of the push piece 4 continue to project under the operation of the fixed cam 5c and the follower 5b of the eject means 5, so that a portion A2 near the front end A1 of the band-like film A delivered after cutting is also pushed toward the feed path B.
- the front end A1 of the band-like film A which has been delivered downward along the feed path B gets in between the fixed guide 7 and the upstream end 6a of the hold and transfer means 6 along the feed path B, whereby the film front end A1 is delivered to the hold and transfer means 6.
- the front end A1 of the cut band-like film A is conveyed from the to-be-packaged article transfer path to a predetermined downward position along the feed path B while being held by the hold and transfer means 6. Then, the front face of the article to be packaged strikes against the band- like film A thus transferred, whereby the film is wound in ⁇ shape around the article while being pulled downward.
- the rotary blade 1 and the fixed backup blade 3 sandwich the rear end of the band-like film A and the front end A-1 of the succeeding film A in the film cutting position P and separate the two from each other. Thereafter, the above operations are repeated.
- the construction of the eject means 5 is not limited to the above construction. There may be adopted any construction if only the push piece 4 can project from the rotation track 1b of the edge 1a of the rotary blade 1 toward the film feed path B in a predetermined section after passage through the film cutting position P between the rotary blade 1 and the fixed backup blade 3 with rotation of the rotary holder 2.
- the construction of the hold and transfer means 6 is not limited to the above construction, either, if only the band-like film A delivered after cutting can be held and conveyed in the film transfer direction.
- band-like film A used in the above embodiment has the generally U-shaped cut D1 and the tear tape A' , this constitutes no limitation. There may be used a band-like film not having such cut D1 or tear tape A ' .
Abstract
According to the present invention relating to a
film cutting machine, a band-like film (A) which is
passing a film cutting position (P) is cut by both
rotary blade (1) and fixed backup blade (3), and in a
predetermined section after passage through the film
cutting position (P) a push piece (4) is ejected from a
rotation track (1b) of an edge (1a) of the rotary blade
(1) toward a feed path (B) of the band-like film (A) by
an eject means (5), so that the push piece (4) strikes
against the front end (A1) of the band-like film (A) to
separate the front end (A1) from a rotary holder (2),
which front end is conducted to the feed path (B).
Description
The present invention relates to a film cutting
machine for use in forming a package film with tear tape
such as a cellophane or polypropylene film which is for
covering a packaged article such as a package of
cigarettes. More particularly, the invention is
concerned with a film cutting machine wherein a rotary
blade and a fixed backup blade are disposed opposingly
so as to sandwich a band-like film feed path, whereby a
band-like film being conveyed is held between the
rotary blade and the fixed backup blade and is thereby
cut linearly in the width direction and is separated
from the film band.
According to a conventional film cutting machine
of this type, as disclosed for example in Japanese
Patent Publication No. Sho 29-1349 or Japanese Patent
Laid-Open No. Hei 5-154793, a band-like film with tear
tape is continuously fed downward with operation of a
pair of feed rollers disposed downstream of a rotary
roller and a backup roller, the rotary roller being
projectingly provided with a generally U-shaped cutting
edge portion, the band-like film passes in a sandwiched
fashion between the rotary roller and the backup roller,
whereupon the cutting edge portion of the rotary roller
is pressed against the backup roller through the film
to make a generally U-shaped cut in the film. The
rotary blade and the fixed backup blade are disposed
opposingly to each other, and on a downstream side
thereof is provided a transfer path for an article to be
packaged perpendicularly to the band-like film feed
path. The front face of the to-be-packaged article is
moved horizontally and pushed against the band-like film
which has been fed up to a predetermined position,
whereby the band-like film is wound in ⊃ shape around
the article while being pulled down. At the same time,
the rotary blade and the fixed backup blade sandwich the
band-like film therebetween to make a linear cut
continuous to the aforesaid generally U-shaped cut,
which cut portion is separated from the band- like film.
In such conventional film cutting machine,
however, a guide for the band-like film cannot be
mounted on the rotary blade side because it comes into
abutment with the edge of the rotary blade, so the front
end portion of the band-like film as delivered after
the cutting becomes free, not supported, which free end
may be wound onto the outer periphery of a rotary holder
provided projectingly with the rotary blade. Even when
edge speed of the rotary blade is lower than the film
feed rate, there is a likelihood of the film front end
becoming adhered and wound onto the blade edge.
Upon occurrence of such problems it is necessary
to urgently stop the operation of the cutting machine
for removal of the entangled band-like film. There
also occurs the problem of defect package because the
band-like film cannot be fed along the feed path up to
the to-be-packaged article transfer path which is an
object position.
Accordingly, it is the first object of the
present invention to hold the front end portion of a
band-like film along the film feed path without being
entangled after cutting.
It is the second object of the present invention
to deliver the band- like film after cutting up to an
object position surely while completely preventing the
entanglement of the film front end portion.
In order to achieve the first object mentioned
above the present invention is characterized in that a
push piece for opposition to and abutment with the film
front end portion which has been moved after cutting is
attached to a rotary holder provided projectingly with a
rotary blade so that it is positioned on an upstream
side in the rotating direction with respect to the
rotary blade, and that there is provided an eject means
for ejecting the push piece, with rotation of the
rotary holder, toward a band-like film feed path from a
rotation track of the rotary blade edge in a
predetermined section after passage of the film through
the film cutting position between the rotary blade and a
fixed backup blade.
It is preferable for the eject means to have a
fixed cam for engagement with a follower connected to
the push piece.
According to the above construction, the band-like
film which is passing between the rotary blade and
the fixed backup blade is cut by both blades, and in a
predetermined section after passage of the film through
the film cutting position the push piece is ejected
from the rotation track of the rotary blade edge toward
the band-like film feed path by means of the eject
means, so that the push piece strikes against the front
end portion of the band-like film being delivered after
cutting and separates it from the rotary holder, which
film is then conducted to the feed path.
In this way the front end portion of the band-like
film delivered after cutting can be conducted along
the film feed path without entanglement. Thus, in
comparison with the conventional like cutting machine
wherein the front end portion of a band-like film
delivered after cutting may be wound onto the outer
periphery of the rotary holder, or the film front end
may be adhered to and entangled on the rotary blade edge
when the edge speed is lower than the film delivery
speed, it is not necessary to urgently stop the
operation of the cutting machine for removal of the
entangled film, thus permitting continuous operation.
According to the present invention, in order to
achieve the second object mentioned above, it is
preferable that a hold and transfer means for holding
the band-like film delivered after cutting and
transferring it in the film delivery direction be
disposed on a downstream side in the film delivery
direction with respect to the fixed backup blade and
along the band-like film feed path so as to become
opposed to the film front end pushed by the push piece.
According to the above construction, since the
hold and transfer means for holding the band-like film
delivered after cutting and transferring it in the film
delivery direction is disposed on a downstream side in
the film delivery direction with respect to the fixed
backup blade and along the film delivery path so as to
become opposed to the film front end which is pushed by
the push piece, the film front end pushed in a direction
away from the rotary holder by the push piece is
conducted along the film feed path and is delivered to
the hold and transfer means.
Thus, the front end portion of the band-like
film delivered after cutting can be transferred surely
up to the object position while preventing entanglement
thereof completely, and consequently it is possible to
prevent accidents, e.g. defective package.
An embodiment of the present invention will be
described below with reference to the accompanying
drawings.
According to this embodiment, as illustrated in
Figs.1 to 3, a pair of feed rollers C, C are disposed in
a sandwiching relation to a feed path B for a band-like
film A, and on the upstream side of the feed rollers C,
C are disposed a rotary roller (not shown) and a backup
roller (not shown), whereby the band-like film A, which
is provided with tear tape A having a generally U-shaped
cut D1, is fed downward in a continuous manner.
Further, on the downstream side of the feed rollers C, C
are disposed in a face-to-face relation a rotary holder
2 provided projectingly with a rotary blade 1 and a
fixed backup blade 3, and further downstream of the
rotary blade 1 and fixed backup blade 3 is horizontally
disposed a to-be-packaged article transfer path (not
shown) orthogonal to the feed path B, whereby the front
face of the article to be packaged which has been moved
horizontally is pushed against the band-like film A
which has been fed up to a predetermined position,
thereby allowing the film A to be wound in U shape
around the body of the article while pulling the film
downward. At the same time, the rotary blade 1 and the
fixed backup blade 3 sandwich the film A therebetween,
make a linear cut D2 therein in the width direction
which cut is continuous to the generally U- shaped cut
D1.
In this embodiment the rotary holder 2 is formed
in a cylindrical shape, and a push piece 4 for
opposition to and abutment with a front end A1 of the
band-like film A delivered after cutting with the rotary
blade 1 and fixed backup blade 3 is disposed on the
rotary holder on an upstream side in the rotating
direction of the rotary holder with respect to the
position where the rotary blade 1 is mounted movably for
adjustment.
The push piece 4 is projectingly provided
horizontally at the base end of the push piece 4 and
rotatably in parallel with the rotary blade 1 and a
central rotating shaft 2a of the rotary holder 2,
whereby the push piece 4 is supported pivotably so that
a front end portion 4b thereof pops in and out of a
rotation track 1b of an edge 1a of the rotary blade 1.
In this embodiment, as shown in Fig.3, the push
piece 4 is arranged in a plural number at appropriate
intervals in the axial direction of the support shaft
4a. To the push pieces 4 is connected an eject
means 5 for ejecting the push pieces 4 from the
rotation track 1b of the blade edge 1a toward the feed
path B in a predetermined section after passage of the
film through a film cutting position P where the film
is cut by both rotary blade and fixed backup blade 3
with rotation of the rotary holder 2.
As shown in Figs.2 and 3, the eject means 5 is
composed of a swing lever 5a provided projectingly at
one end of the support shaft 4a, a follower 5b, e.g.
driven roller, connected to the swing lever 5a, a fixed
cam 5c, e.g. plate cam, connected to a bearing portion
2b which supports the rotating shaft 2a of the rotary
holder 2, and a resilient member 5d, e.g. spring, for
urging the follower 5b toward the fixed cam 5c at all
times.
In the position where the front end 4b of the
push piece 4 passes the film cutting position P with
rotation of the rotary holder 2, the fixed cam 4c
controls the position of the follower 5c so that the
front end 4b stands by inside the rotation track 1b of
the blade edge 1a as in Fig.4. Further, in a
predetermined section after passage of the push piece
front end 4b through the film cutting position P, more
specifically, until when the front end A1 of the band-like
film A delivered after cutting reaches a position
opposed to an upstream end 6a of a hold and transfer
means 6 to be described later, the fixed cam 5c controls
the position of the follower 5b so that the front end
4b of the push piece 4 is projected little by little
toward the feed path B from the rotation track 1b of the
edge 1a of the rotary blade 1 as in Figs.1 and 5. And
before arrival of the push piece front end 4b from this
position again at the film cutting position P the fixed
cam 5c controls the position of the follower 5b so that
the front end 4b sinks inside the rotation track 1b of
the blade edge 1a gradually.
The hold and transfer means 6 is for holding the
band-like film A delivered after cutting and
transferring it in the film feed direction. It is
disposed along the film feed path B on the downstream
side in the film feed direction with respect to the
mounted position of the fixed backup blade 3 in such a
manner that an upstream end 6a thereof is opposed to the
front end A1 of the band-like film A which is pushed
with the front end 4b of the push piece 4 ejected by the
eject means 5.
In this embodiment, the hold and transfer means
is a vacuum belt having a plurality of suction holes 6,
as shown in Fig.1, and is arranged in a plural number in
the width direction of the band-like film A, whereby
the band-like film A which has been fed by the operation
of the feed rollers C, C is held by suction and it
front end A1 is transferred up to a predetermined
position below the transfer path of the article to be
conveyed.
In a position opposed to the upstream end 6a of
the hold and transfer means 6, on the downstream side in
the film feed direction with respect to the film
cutting position P, there is disposed a fixed guide 7
with the film feed path B interposed between it and the
upstream end 6a. The guide 7 is positioned as close as
possible to a projecting rotation track 4c of the front
end 4b of the push piece 4 within a range not
interfering with the rotation track 4c, as shown in
Fig.5.
The operation of the film cutting machine
constructed as above will be described below.
First, when the band-like film A with tear tape
is continuously fed downward by the operation of the
feed rollers C, C, the edge 1a of the rotary blade 1
reaches the film cutting position with rotation of the
rotary holder 2 and sandwiches the band-like film A
between it and the fixed backup blade 3, as shown in
Figs.2 and 3, whereby a linear cut D2 continuous to the
generally U-shaped cut D1 is made in the width direction
for separation.
Subsequently, the front end 4b of the push piece
approaches the film cutting position P. At this time,
however, since the front end 4b is held inside the
rotation track 1b of the edge 1a of the rotary blade 1
by the fixed cam 5c and the follower 5b of the eject
means 5, as shown in Fig.4, it passes the position P
without abutment with the fixed backup blade 3.
After the front end 4b of the push piece 4 has
passed the film cutting position P, it is gradually
projected from the rotation track 1b of the blade edge
1a toward the feed path B by the fixed cam 5c and the
follower 5b of the eject means 5, as shown in Fig.1, and
strikes against the front end A1 of the band-like film
A delivered after cutting to push it out away from the
rotary holder 2, with the result that the front end
portion A1 of the band- like film A is delivered
downward along the feed path B.
Also thereafter, the front end 4b of the push
piece 4 continue to project under the operation of the
fixed cam 5c and the follower 5b of the eject means 5,
so that a portion A2 near the front end A1 of the band-like
film A delivered after cutting is also pushed
toward the feed path B. By this time, the front end A1
of the band-like film A which has been delivered
downward along the feed path B gets in between the
fixed guide 7 and the upstream end 6a of the hold and
transfer means 6 along the feed path B, whereby the film
front end A1 is delivered to the hold and transfer
means 6.
Thereafter, the front end A1 of the cut band-like
film A is conveyed from the to-be-packaged article
transfer path to a predetermined downward position
along the feed path B while being held by the hold and
transfer means 6. Then, the front face of the article
to be packaged strikes against the band- like film A
thus transferred, whereby the film is wound in ⊃ shape
around the article while being pulled downward. At the
same time, as shown in Figs.2 and 3, the rotary blade 1
and the fixed backup blade 3 sandwich the rear end of
the band-like film A and the front end A-1 of the
succeeding film A in the film cutting position P and
separate the two from each other. Thereafter, the above
operations are repeated.
The construction of the eject means 5 is not
limited to the above construction. There may be
adopted any construction if only the push piece 4 can
project from the rotation track 1b of the edge 1a of the
rotary blade 1 toward the film feed path B in a
predetermined section after passage through the film
cutting position P between the rotary blade 1 and the
fixed backup blade 3 with rotation of the rotary holder
2. The construction of the hold and transfer means 6 is
not limited to the above construction, either, if only
the band-like film A delivered after cutting can be held
and conveyed in the film transfer direction.
Although the band-like film A used in the above
embodiment has the generally U-shaped cut D1 and the
tear tape A' , this constitutes no limitation. There
may be used a band-like film not having such cut D1 or
tear tape A ' .
Having described specific preferred embodiments
of the invention with reference to the accompanying
drawings, it will be appreciated that the present
invention is not limited to those precise embodiments,
and that various changes and modifications can be
effected therein by one of ordinary skill in the art
without departing from the scope and spirit of the
invention as defined by the appended claims.
Claims (10)
- In a film cutting machine wherein a rotary blade (1) and a fixed backup blade (3) are disposed opposingly to each other in a sandwiching relation to a feed path (B) of a band-like film (A), and the band-like film (A) being fed is sandwiched in between the rotary blade (1) and the fixed backup blade (3), thereby making a linear cut (D2) in the width direction of the film and separating the cut film at a predetermined length, the improvement characterized in that:a push piece (4) adapted to come into opposition to and abutment with a front end (A1) of the band-like film (A) which has been delivered after cutting is mounted on a rotary holder (2) on an upstream side in the rotation direction with respect to the rotary blade (1) which is projectingly provided on the rotary holder (2); andthere is provided an eject means for ejecting the push piece (4) from a rotation track (1b) of an edge (1a) of the rotary blade (1) toward the feed path (B) of the band-like film (A) in a predetermined section after passage of the push piece through a film cutting position (P) between the rotary blade (1) and the fixed backup blade (3) with rotation of the rotary holder (2)
- A film cutting machine according to claim 1, wherein said eject means (5) has a fixed cam (5c) engaged with a follower (5b) which is connected to the push piece (4).
- A film cutting machine according to claim 1 or claim 2, wherein a hold and transfer means (6) for holding the band- like film (A) which has been delivered after cutting and transferring it in the film feed direction is disposed on a downstream side in the film feed direction and along the feed path (B) of the band-like film (A) so as to become opposed to the front end (A1) of the film.
- A film cutting machine according to claim 1, wherein the push piece (4) is supported pivotably on the rotary holder (2) through a support shaft (4a) so that a front end (4b) thereof pops in and out of the rotation track (1b) of the edge (1a) of the rotary blade (1).
- A film cutting machine according to claim 2, wherein said ejector means (5) comprises a swing lever (5a) mounted projectingly on a support shaft (4) of the push piece (4), a follower (5b) connected to the swing lever (5a), the fixed cam (5c) connected to a bearing portion (2b) which supports a central rotating shaft (2a) of the rotary holder (2) rotatably, and a resilient member (5d) for urging the follower (5b) toward the fixed cam (5c) at all times.
- A film cutting machine according to claim 5, wherein in the position where the front end (4b) of the push piece (4) passes the film cutting position (P) with rotation of the rotary holder (2), the fixed cam (5c) controls the position of the follower (5b) so that the front end (4b) of the push piece (4) stands by inside the rotation track (1b) of the edge (1a) of the rotary blade (1), also controls the position of the follower (5b) so that the front end (4b) of the push piece (4) projects little by little from the rotation track (1b) of the rotary blade edge (1a) toward the feed path (B) during the period after passage of the front end (4b) of the push piece (4) through the film cutting position (P) until when the front end (A1) of the band-like film (A) delivered after the cutting reaches a position opposed to an upstream end (6a) of said hold and transfer means (6), and further controls the follower (5b) so that the front end (4b) of the push piece (4) gradually sinks inside the rotation track (1b) of the rotary blade edge (1a) before the front end (4b) moves from that position and again reaches the film cutting position (P).
- A film cutting machine according to claim 3, wherein the hold and transfer means (6) is a vacuum belt having a plurality of suction holes (6b).
- A film cutting machine according to claim 3, wherein in a position opposite to an upstream end (6a) of the hold and transfer means (6) on the downstream side in the film feed direction with respect to the film cutting position (P) there is disposed a fixed guide (7) with the feed path (B) interposed between it and the upstream end (6a) and close to a projecting rotation track (4c) of a front end (4b) of the push piece (4) but in a range not interfering with the rotation track (4c).
- A film cutting machine according to claim 1, wherein the band-like film (A) is provided with a tear tape (A ' ) having a generally U-shaped cut (D1), and feed rollers (C) for feeding the band-like film (A) downward are disposed on the upstream side of the rotary blade (1) and the fixed backup blade (3) in a sandwiching relation to the feed path (B) of the band-like film (A)
- A film cutting machine according to claim 9, wherein a to-be-packaged article transfer path orthogonal to the film feed path (B) is provided horizontally on the downstream side of the rotary blade (1) and the fixed backup blade (3) so that the front face of an article to be packaged which has been moved horizontally is knocked against the band-like film (A) which has been fed up to a predetermined position, thereby allowing the film (A) to be wound in U shape around the body of the article while being pulled downward, and at the same time the rotary blade (1) and the fixed backup blade (3) sandwich the band-like film (A) therebetween to make a linear cut (D2) contiguous to the cut (D1) in the width direction and allow the cut film portion to be separated from the succeeding band-like film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96111729A EP0819505A1 (en) | 1996-07-20 | 1996-07-20 | Film cutting machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96111729A EP0819505A1 (en) | 1996-07-20 | 1996-07-20 | Film cutting machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0819505A1 true EP0819505A1 (en) | 1998-01-21 |
Family
ID=8223014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96111729A Withdrawn EP0819505A1 (en) | 1996-07-20 | 1996-07-20 | Film cutting machine |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0819505A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2460751A1 (en) * | 2009-07-31 | 2012-06-06 | Unicharm Corporation | Cutting and transfer device and cutting and transfer method |
CN107791300A (en) * | 2017-12-05 | 2018-03-13 | 海安交睿机器人科技有限公司 | A kind of film Shou Yao mechanisms |
CN110480735A (en) * | 2019-08-08 | 2019-11-22 | 上海恩捷新材料科技有限公司 | A kind of integral type cutter for basement membrane producing line contained side trimming |
AT521468B1 (en) * | 2019-01-31 | 2020-02-15 | Andritz Ag Maschf | METHOD FOR CROSS-CUTING A MATERIAL TRAIN MOVING ALONG A MOVEMENT DIRECTION, AND DEVICE THEREFOR |
CN113119204A (en) * | 2021-03-31 | 2021-07-16 | 安徽捷迅光电技术有限公司 | Electric pipe placing machine |
CN114368016A (en) * | 2021-12-20 | 2022-04-19 | 深圳市广麟材耀新能源材料科技有限公司 | Plastic-aluminum membrane cuts device and a class production facility of plastic-aluminum membrane |
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GB281772A (en) * | 1926-09-09 | 1927-12-09 | Walter Everett Molins | Improvements in or relating to machines for automatically cutting a moving web of paper or like material into strips |
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US5327702A (en) * | 1991-08-01 | 1994-07-12 | Molins Plc | Wrapping articles |
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1996
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GB262975A (en) * | 1926-01-22 | 1926-12-23 | Walter Everett Molins | Improvements in or relating to mechanism for severing a moving web into lengths |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2460751A1 (en) * | 2009-07-31 | 2012-06-06 | Unicharm Corporation | Cutting and transfer device and cutting and transfer method |
EP2460751A4 (en) * | 2009-07-31 | 2013-07-10 | Unicharm Corp | Cutting and transfer device and cutting and transfer method |
US8714063B2 (en) | 2009-07-31 | 2014-05-06 | Uni-Charm Corporation | Cutting and transferring apparatus and cutting and transferring method |
CN107791300A (en) * | 2017-12-05 | 2018-03-13 | 海安交睿机器人科技有限公司 | A kind of film Shou Yao mechanisms |
AT521468B1 (en) * | 2019-01-31 | 2020-02-15 | Andritz Ag Maschf | METHOD FOR CROSS-CUTING A MATERIAL TRAIN MOVING ALONG A MOVEMENT DIRECTION, AND DEVICE THEREFOR |
AT521468A4 (en) * | 2019-01-31 | 2020-02-15 | Andritz Ag Maschf | METHOD FOR CROSS-CUTING A MATERIAL TRAIN MOVING ALONG A MOVEMENT DIRECTION, AND DEVICE THEREFOR |
WO2020156725A1 (en) | 2019-01-31 | 2020-08-06 | Andritz Ag | Method for cross-cutting a material web moved in a direction of movement, and device therefor |
CN110480735A (en) * | 2019-08-08 | 2019-11-22 | 上海恩捷新材料科技有限公司 | A kind of integral type cutter for basement membrane producing line contained side trimming |
CN110480735B (en) * | 2019-08-08 | 2023-11-17 | 上海恩捷新材料科技有限公司 | A integral type cutter that is used for base film to produce fastener limit side cut |
CN113119204A (en) * | 2021-03-31 | 2021-07-16 | 安徽捷迅光电技术有限公司 | Electric pipe placing machine |
CN114368016A (en) * | 2021-12-20 | 2022-04-19 | 深圳市广麟材耀新能源材料科技有限公司 | Plastic-aluminum membrane cuts device and a class production facility of plastic-aluminum membrane |
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