EP0266903B1 - Board treatment apparatus - Google Patents
Board treatment apparatus Download PDFInfo
- Publication number
- EP0266903B1 EP0266903B1 EP87308788A EP87308788A EP0266903B1 EP 0266903 B1 EP0266903 B1 EP 0266903B1 EP 87308788 A EP87308788 A EP 87308788A EP 87308788 A EP87308788 A EP 87308788A EP 0266903 B1 EP0266903 B1 EP 0266903B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll pair
- sprocket
- discs
- blanks
- feed
- 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 - Lifetime
Links
- 238000000926 separation method Methods 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 210000001699 lower leg Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/002—Precutting and tensioning or breaking
-
- 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
- B65H35/10—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 devices for breaking partially-cut or perforated webs, e.g. bursters
Definitions
- This invention relates to board treatment apparatus for use in the production of discrete separated blanks out of larger blanks or from web material, This is done by cutting substantially through the board around the perimeter of the required blanks, so as to separate the blanks from the remainder or scrap. It is conventional to make the cuts incomplete or discontinuous so as to retain a connection, whilst the original blank or web proceeds through the treatment apparatus, and only effect separation at the end of the treatment.
- the connected blanks may be arranged successively along the feed direction, that is to say two or more blanks may have been created in succession out of the original blank or from a continuous web, and possibly also there may be two or more blanks laterally of the feed direction.
- the connections between these continuous blanks are not disturbed by the scrap removal apparatus and it is the object of the present invention to separate such continuous blanks wholly and completely from one another.
- Patent GB 1 008 152 A discloses a web severing mechanism for a continuous web with cross perforations, in which the web is fed along a arcuate guide between feed rolls and accelerator rolls.
- the two sets of rolls are driven by radially extending chains from a common drive shaft located generally at the centre of the curvature of the arcuate guide.
- Adjustment to suit different blank lengths between perforations is effected within narrow limits by swinging one pair of rolls to vary the length of the arc between the two sets of rolls, up to a 90 ° maximum.
- Apparatus for board treatment comprising a feed roll pair and a separator roll pair coupled together so that the separator pair has a higher surface speed than the feed roll pair, whereby blanks passing successively through the nips of both pairs will be linearly accelerated by the separator pair, together with means for adjusting the spacing between the two pairs in the feed direction so as to achieve a distance between said nips which is less than twice the length of a discrete blank and at least substantially equal to the length of a discrete blank, is characterised in that one of said separator pair has a pulley or sprocket connected by an endless belt or chain to further pulley or sprocket on a shaft at one end of a mainly sliding link of which the other end carries said separator pair, another pulley or sprocket on said shaft is connected by a second belt or chain to a pulley or sprocket on an intermediate shaft, and a further pulley or sprocket on said intermediate shaft is connected by
- the invention recognises that the spacing between the nips is critical. If contrary to the invention a distance of more than twice the length of a blank being treated exists between the two nips it would be possible for the leading end of a first blank to be engaged by the acceleration rollers when the trailing end of the immediately following blank had passed the feed rollers, and hence two successive blanks could be drawn through the acceleration rollers together and that would prevent the desired separation being achieved. On the other hand if the distance between the nips is substantially less than the length of a single discrete blank, it will be possible for one and the same blank to be seized by the feed rolls and driven forwardly at one speed, whilst also being seized by the acceleration rolls trying to drive the same blank forward at a different speed. This might damage a blank particularly a relatively fragile one made of thin card rather than heavier board. However it is possible for the spacing between the two nips to be slightly less than unit length especially where it is heavier board or a less fragile blank which is concerned.
- the feed rolls comprise generally cylindrical rollers geared together to be driven at the same speed, and with adjustment means for dealing with different thicknesses, or possibly spring loading to give a required nip pressure.
- the acceleration rolls comprise pairs of discs the two discs of each pair being co-planar, and a plurality of discs being provided adjustably along the length of a pair of parallel shafts which are geared together for synchronous drive, the discs being adjusted to positions so that, for example, two laterally spaced pairs of discs engage each blank as it passes through the nip.
- the discs being adjusted to positions so that, for example, two laterally spaced pairs of discs engage each blank as it passes through the nip.
- a first one of these may be contacted at its laterally opposite marginal edges by a pair of discs on the upper of the two shafts, that is the one which is physically vertically above the feed plane, assuming the feed plane to be horizontal, the centre blank of the three by a pair of discs on the second shaft and which is below the feed plane, and the third blank by a further pair on the first shaft of the feed plane.
- the two outer blanks will be deflected downwardly from the feed plane whilst the centre blank is deflected upwardly from the feed plane and this will achieve the complete separation required, and ensure that the remaining connection between the contiguous blanks is broken.
- these references are to three blanks, the invention is useful with any number from two upwardly, in longitudinal or longitudinal and transverse directions.
- All four shafts may be coupled together in a common gear train to maintain synchronisation of the upper and lower discs and of speed of all of them relative to an input.
- This gear train may be coupled to the feed rollers so as to maintain speed synchronisation between the feed rollers and said gear train, so that if the speed rolls speed up or slow down, then the gear train does likewise.
- the invention may be provided in the form of an attachment to an existing machine such as a diecutter using the feed rolls of the latter as those required by the present invention.
- the invention may be put into effect in apparatus provided with its own feed rolls, including the possibility of providing the invention as the final stage in a complex apparatus including those feed rolls.
- said gear train with the associated shafts is mounted on a subframe which is movable relative to the feed rolls.
- the movement may be achieved by a rack and pinion or equivalent.
- the drive between the feed rolls and the gear train may be by way of an endless belt or chain and according to a feature of the invention, jockey wheels and adjusters are avoided by using a linkage comprising three links of fixed length, pivoted together end to end, with the first link being journalled on the feed roll axis from which the drive is derived, and the third link being slidable, for example parallel to the feed plane and being fixed to the drive input shaft of said gear train at one end and to the other links of the set at its other end.
- the first and second links can swing in position as the third link slides during movement of the gear train towards and away from the feed roll.
- Appropriate sprockets or pulleys are journalled on the pivotal axes of the links, and looped by corresponding belts or endless chains.
- the invention is applied as an add-on attachment comprising a subframe 18 providing journals for shafts carrying the acceleration discs 20 22 and the lateral separation or side tie breaker discs 24 26. These are all geared together by intermediate gear pinions 28 30 and drive is taken to a sprocket on the shaft carrying the acceleration discs 20 by a chain 34 (also) looped about a sprocket on axis 36 at the end of a (mainly) sliding link connecting axis 36 with the axis of the shaft carrying accelerator disc 20.
- a second chain 36 loops the sprocket on axis 36 with one on axis 40 at the end of a swinging link connecting axes 36 and 40 and another chain 42 connects that sprocket with one on the axis of the drive roll 16.
- the adjustment means for varying the spacing along the feed path 12 in the feed rolls 14 16 and the subframe 18, or more effectively between the feed rolls and the shafts carrying the acceleration discs 20 22, in this instance, comprises a fixed length of roller chain 46 carried by the subframe, and a meshed drive sprocket 48 mounted on an extension from the main frame 50.
- the subframe and the main frame are connected by extensible bellows or gaiter 52 to enclose the chain drive.
- the gap between the two frame is bridged by a series of wires 56 which are held in tension by a springloaded reel 58, so that as the subframe is moved away from the main frame, the wires are fed out to provide a support for blanks across the gap.
- Nip adjustment is provided by an adjuster mechanism 60 shown diagrammatically.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Description
- This invention relates to board treatment apparatus for use in the production of discrete separated blanks out of larger blanks or from web material, This is done by cutting substantially through the board around the perimeter of the required blanks, so as to separate the blanks from the remainder or scrap. It is conventional to make the cuts incomplete or discontinuous so as to retain a connection, whilst the original blank or web proceeds through the treatment apparatus, and only effect separation at the end of the treatment.
- Various kinds of apparatus are known for separating the scrap from the blanks, but the present invention is concerned with a different problem: that of separating contiguous blanks one from the next. The connected blanks may be arranged successively along the feed direction, that is to say two or more blanks may have been created in succession out of the original blank or from a continuous web, and possibly also there may be two or more blanks laterally of the feed direction. The connections between these continuous blanks are not disturbed by the scrap removal apparatus and it is the object of the present invention to separate such continuous blanks wholly and completely from one another.
- Patent GB 1 008 152 A discloses a web severing mechanism for a continuous web with cross perforations, in which the web is fed along a arcuate guide between feed rolls and accelerator rolls. The two sets of rolls are driven by radially extending chains from a common drive shaft located generally at the centre of the curvature of the arcuate guide. Adjustment to suit different blank lengths between perforations is effected within narrow limits by swinging one pair of rolls to vary the length of the arc between the two sets of rolls, up to a 90° maximum.
- This solution is not useful for heavier boards because of the curvature imparted to the web in guides, nor is it useful for a wide variation in length of blanks because of the 90° limit.
- According to the invention, Apparatus for board treatment comprising a feed roll pair and a separator roll pair coupled together so that the separator pair has a higher surface speed than the feed roll pair, whereby blanks passing successively through the nips of both pairs will be linearly accelerated by the separator pair, together with means for adjusting the spacing between the two pairs in the feed direction so as to achieve a distance between said nips which is less than twice the length of a discrete blank and at least substantially equal to the length of a discrete blank, is characterised in that one of said separator pair has a pulley or sprocket connected by an endless belt or chain to further pulley or sprocket on a shaft at one end of a mainly sliding link of which the other end carries said separator pair, another pulley or sprocket on said shaft is connected by a second belt or chain to a pulley or sprocket on an intermediate shaft, and a further pulley or sprocket on said intermediate shaft is connected by a third belt or chain to a pulley or sprocket carried by one of said feed roll pair.
- By making the three belts or chains of suitable length, and in particular the mainly sliding link of suitable length, blanks of a wide range of lengh can be dealt with. Moreover the blanks effectively remain in a single plane without need for curvature.
- The invention recognises that the spacing between the nips is critical. If contrary to the invention a distance of more than twice the length of a blank being treated exists between the two nips it would be possible for the leading end of a first blank to be engaged by the acceleration rollers when the trailing end of the immediately following blank had passed the feed rollers, and hence two successive blanks could be drawn through the acceleration rollers together and that would prevent the desired separation being achieved. On the other hand if the distance between the nips is substantially less than the length of a single discrete blank, it will be possible for one and the same blank to be seized by the feed rolls and driven forwardly at one speed, whilst also being seized by the acceleration rolls trying to drive the same blank forward at a different speed. This might damage a blank particularly a relatively fragile one made of thin card rather than heavier board. However it is possible for the spacing between the two nips to be slightly less than unit length especially where it is heavier board or a less fragile blank which is concerned.
- Preferably the feed rolls comprise generally cylindrical rollers geared together to be driven at the same speed, and with adjustment means for dealing with different thicknesses, or possibly spring loading to give a required nip pressure.
- Preferably the acceleration rolls comprise pairs of discs the two discs of each pair being co-planar, and a plurality of discs being provided adjustably along the length of a pair of parallel shafts which are geared together for synchronous drive, the discs being adjusted to positions so that, for example, two laterally spaced pairs of discs engage each blank as it passes through the nip. Thus if a particular blank configuration requires three laterally associated blanks, three pairs of such discs will be provided, and so on.
- The arrangement described so far provides for separation of blanks along the feed length. In order to provide, additionally, lateral separation, we provide a second set of discs, with in this case the two discs of each pair laterally juxtaposed instead of so planar and with said two discs overlapped. These discs may be of larger diameter than the acceleration discs, and these are to be adjusted along the length of their shafts (which extend parallel to the feed rolls and the shafts carrying the acceleration discs) so that the lateral margins of each blank encounter two axially spaced discs which contact the blank on the same face. Thus for example; if three contiguous blanks are laterally disposed, a first one of these may be contacted at its laterally opposite marginal edges by a pair of discs on the upper of the two shafts, that is the one which is physically vertically above the feed plane, assuming the feed plane to be horizontal, the centre blank of the three by a pair of discs on the second shaft and which is below the feed plane, and the third blank by a further pair on the first shaft of the feed plane. Hence, the two outer blanks will be deflected downwardly from the feed plane whilst the centre blank is deflected upwardly from the feed plane and this will achieve the complete separation required, and ensure that the remaining connection between the contiguous blanks is broken. Whilst these references are to three blanks, the invention is useful with any number from two upwardly, in longitudinal or longitudinal and transverse directions.
- All four shafts, that is to say the two carrying the acceleration discs which achieve the longitudinal separation along the feed plane, and the two carrying the larger discs which achieve the lateral separation across the feed plane, may be coupled together in a common gear train to maintain synchronisation of the upper and lower discs and of speed of all of them relative to an input. This gear train may be coupled to the feed rollers so as to maintain speed synchronisation between the feed rollers and said gear train, so that if the speed rolls speed up or slow down, then the gear train does likewise.
- In general, the invention may be provided in the form of an attachment to an existing machine such as a diecutter using the feed rolls of the latter as those required by the present invention. Alternatively the invention may be put into effect in apparatus provided with its own feed rolls, including the possibility of providing the invention as the final stage in a complex apparatus including those feed rolls.
- Preferably, said gear train with the associated shafts is mounted on a subframe which is movable relative to the feed rolls. The movement may be achieved by a rack and pinion or equivalent.
- The drive between the feed rolls and the gear train may be by way of an endless belt or chain and according to a feature of the invention, jockey wheels and adjusters are avoided by using a linkage comprising three links of fixed length, pivoted together end to end, with the first link being journalled on the feed roll axis from which the drive is derived, and the third link being slidable, for example parallel to the feed plane and being fixed to the drive input shaft of said gear train at one end and to the other links of the set at its other end. Hence the first and second links can swing in position as the third link slides during movement of the gear train towards and away from the feed roll. Appropriate sprockets or pulleys are journalled on the pivotal axes of the links, and looped by corresponding belts or endless chains.
- The invention is more particularly described with reference to the accompanying drawing wherein the sole figure is a diagrammatic elevation of an apparatus according to the invention showing a
stripper drum 10 as the final stage of a die cutting apparatus, delivering blanks along thefeed path 12 to a pair offeed rolls 14 16. - In this instance, the invention is applied as an add-on attachment comprising a
subframe 18 providing journals for shafts carrying theacceleration discs 20 22 and the lateral separation or sidetie breaker discs 24 26. These are all geared together byintermediate gear pinions 28 30 and drive is taken to a sprocket on the shaft carrying theacceleration discs 20 by a chain 34 (also) looped about a sprocket onaxis 36 at the end of a (mainly) slidinglink connecting axis 36 with the axis of the shaft carryingaccelerator disc 20. Asecond chain 36 loops the sprocket onaxis 36 with one onaxis 40 at the end of a swinginglink connecting axes chain 42 connects that sprocket with one on the axis of thedrive roll 16. - The adjustment means for varying the spacing along the
feed path 12 in thefeed rolls 14 16 and thesubframe 18, or more effectively between the feed rolls and the shafts carrying theacceleration discs 20 22, in this instance, comprises a fixed length ofroller chain 46 carried by the subframe, and a mesheddrive sprocket 48 mounted on an extension from themain frame 50. The subframe and the main frame are connected by extensible bellows orgaiter 52 to enclose the chain drive. The gap between the two frame is bridged by a series ofwires 56 which are held in tension by aspringloaded reel 58, so that as the subframe is moved away from the main frame, the wires are fed out to provide a support for blanks across the gap. Nip adjustment is provided by anadjuster mechanism 60 shown diagrammatically.
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB868626179A GB8626179D0 (en) | 1986-11-01 | 1986-11-01 | Board treatment apparatus |
GB8626179 | 1986-11-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0266903A1 EP0266903A1 (en) | 1988-05-11 |
EP0266903B1 true EP0266903B1 (en) | 1990-08-01 |
Family
ID=10606698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87308788A Expired - Lifetime EP0266903B1 (en) | 1986-11-01 | 1987-10-05 | Board treatment apparatus |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0266903B1 (en) |
DE (1) | DE3764066D1 (en) |
GB (1) | GB8626179D0 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5735443A (en) * | 1993-09-08 | 1998-04-07 | Moore Business Forms Inc | Single part burster |
CN105328739B (en) * | 2015-11-23 | 2017-07-04 | 四川省青城机械有限公司 | Positive feed mechanism is clamped based on vertical shaft subdivision saw discharge end |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1008152A (en) * | 1963-03-13 | 1965-10-27 | Lamson Paragon Ltd | Improvements in or relating to paper and the like web severing mechanisms |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1231100B (en) * | 1964-12-01 | 1966-12-22 | Eberhard Tilger Dipl Ing | Arrangement for actuating the separating device for separating webs made of paper, plastic or the like provided with weakening lines in a tube drawing machine |
GB1333161A (en) * | 1970-01-30 | 1973-10-10 | Windmoeller & Hoelscher | Severing apparatus for severing lengths of tube from flattened scored tubing |
FR2247099A5 (en) * | 1973-10-04 | 1975-05-02 | Sodern | Automatic tearing device for perforated paper - has inlet and outlet roller pairs, each with drive and press roller |
DE3220892A1 (en) * | 1982-06-03 | 1983-12-08 | Icoma Packtechnik GmbH, 7590 Achern | DISCONNECTOR FOR SEPARATING PERFORATED PAPER HOSE SECTIONS |
-
1986
- 1986-11-01 GB GB868626179A patent/GB8626179D0/en active Pending
-
1987
- 1987-10-05 EP EP87308788A patent/EP0266903B1/en not_active Expired - Lifetime
- 1987-10-05 DE DE8787308788T patent/DE3764066D1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1008152A (en) * | 1963-03-13 | 1965-10-27 | Lamson Paragon Ltd | Improvements in or relating to paper and the like web severing mechanisms |
Also Published As
Publication number | Publication date |
---|---|
DE3764066D1 (en) | 1990-09-06 |
GB8626179D0 (en) | 1986-12-03 |
EP0266903A1 (en) | 1988-05-11 |
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