EP3453660A1 - Method and apparatus for splicing webs - Google Patents
Method and apparatus for splicing webs Download PDFInfo
- Publication number
- EP3453660A1 EP3453660A1 EP17306156.5A EP17306156A EP3453660A1 EP 3453660 A1 EP3453660 A1 EP 3453660A1 EP 17306156 A EP17306156 A EP 17306156A EP 3453660 A1 EP3453660 A1 EP 3453660A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- cutting
- during
- station
- advancement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
- B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
- B65H19/1826—Flying splicing, i.e. the expiring web moving during splicing contact taking place at a distance from the replacement roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/46—Splicing
- B65H2301/461—Processing webs in splicing process
- B65H2301/4615—Processing webs in splicing process after splicing
- B65H2301/4617—Processing webs in splicing process after splicing cutting webs in splicing process
- B65H2301/46174—Processing webs in splicing process after splicing cutting webs in splicing process cutting both spliced webs separately
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/46—Splicing
- B65H2301/462—Form of splice
- B65H2301/4621—Overlapping article or web portions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/515—Cutting handled material
- B65H2301/5153—Details of cutting means
- B65H2301/51532—Blade cutter, e.g. single blade cutter
Landscapes
- Replacement Of Web Rolls (AREA)
Abstract
Description
- The present invention relates to a method for splicing webs, in particular webs of labeling material. In particular, the present invention relates to a method for splicing a web in use with a new web without reducing the advancement speed of the web in use.
- Furthermore, the present invention relates to an apparatus for splicing webs, in particular webs of labeling material. In particular, the present invention relates to an apparatus for splicing a web in use with a new web without reducing the advancement speed of the web in use.
- It is known in the art, that there are different types of labeling machines for applying label sheets onto receptacles, such as bottles, containers or the like.
- Furthermore, it is known that there are different kinds of label types.
- One typical label type is the so called "self-stick label", which is directly wrapped around at least part of the respective receptacle and glued thereto. The application of this kind of label typically relies on advancing a web of labeling material towards a cutting station at which the single labels are obtained from the web of labeling material by cutting the web of labeling material at the cutting station. These labels are often also referred to as roll-fed-labels.
- Another typical label type, used with in particular beverage bottles or vessels, is the label commonly known as "sleeve label", which is formed in a tubular configuration and then applied onto the respective article. The "sleeve label" is obtained from cutting a web of labeling material at a respective cutting station. Finally, after application of the "sleeve label" a heat shrinking operation is carried out to make the labels adhere onto the respective receptacles.
- A further typical label type, are the "pressure-sensitive labels" (PLS), which are removably attached on a base web and which are detached from the base web prior to being applied onto the respective receptacles.
- Typically, independently of the label type, a labeling machine comprises a labeling apparatus adapted to receive the web of labeling material, adapted to obtain single label sheets from the web of labeling material and adapted to apply the single label sheets onto the receptacles and a web conveying apparatus for providing for and for conveying the web of labeling material to the labeling apparatus.
- A typical web conveying apparatus comprises a first reel unit for containing a first reel of wound-up web of labeling material and a conveying device for conveying the web of labeling material along a web advancement path from the first reel to labeling apparatus. In other word, the conveying device is adapted to convey a web in use to the labeling apparatus.
- During a typical labeling process the quantity of web of labeling material wound-up onto the first reel is sufficient for labeling receptacles for about 20 to 30 minutes. This is, why typically, a web conveying apparatus also comprises a second reel unit for containing a second reel of wound-up web of labeling material and a splicing unit for splicing the web of labeling material in use (the web of labeling material from the first reel) with a new web of labeling material (the web of labeling material from the second reel).
- A typical splicing unit comprises a cutting assembly for cutting the web in use at a cutting station and a bonding assembly for bonding the new web of labeling material and the web of labeling material in use with one another at a bonding station. The bonding station being arranged downstream from the cutting station along the web advancement path.
- The bonding assembly comprises e.g. two pad elements one adapted to interact with the web in use and the other one adapted to interact with the new web. As well, each pad element is fluidically connected to an aspiration source. Furthermore, the pad elements are adapted to linearly move from a rest position to an operative position for bringing the web of labeling material in use and the new web of labeling material into contact with one another.
- In use, prior to the actual bonding operation an operator fixes a bi-adhesive tape onto the trailing edge of the new web of labeling material and places the trailing edge of the new web onto the respective pad element, which retains the new web of labeling material in the area of the trailing edge by means of aspiration. Then, by moving simultaneously the two pad elements from the respective rest position to the respective operative position, the web in use and the new web are bonded to one another by means of the bi-adhesive tape. After the bonding, the web in use is cut at the cutting station and the new web is advanced to the labeling apparatus (the new web becomes the web in use).
- A drawback is that it is required to slow down the advancement of the web in use (and therewith the labeling process) for executing the bonding of the web in use and the new web with one another. The slowing down is undesired as the overall production time increases.
- This becomes even more critical with respect to the new compact receptacle processing machines, which have become popular in the recent years. Typically, such machines comprise a blow molding apparatus for producing the receptacles, a filling apparatus for filling the receptacles, a labeling apparatus for labeling the receptacles and a capping apparatus for closing the receptacles, all of which operating at the same processing speed (they are in a blocked configuration).
- The latter drawback has been intended to be circumvented by providing for that the pad elements are adapted to rotate around a respective rotation axis so that, in use, the pad elements perform an arc-shaped movement when getting into contact with the web in use and the new web during the bonding.
- Even though such an approach allows higher web advancement speeds during web splicing compared to the first web conveying apparatus described above, there is the need to achieve even higher web advancement speeds.
- It is therefore an object of the present invention to provide a method to overcome, in a straightforward and low-cost manner, at least one of the aforementioned drawbacks.
- According to the present invention, there is provided a method as claimed in
claim 1. - Preferred embodiments of the present invention are claim in the respective dependent claims.
- One non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which:
-
Figure 1 is a schematic top view of a labeling machine having a web advancement and splicing apparatus according to a first embodiment and according to the present invention, with parts removed for clarity; -
Figure 2a to 2e is a schematic view of the web advancement and splicing apparatus ofFigure 1 during differing operational steps, with parts removed for clarity; -
Figure 3 is a perspective view of a detail of the web advancement and splicing apparatus ofFigure 1 andFigures 2a to 2e , with parts removed for clarity; -
Figure 4 is a perspective view of a further detail of the web advancement and splicing apparatus ofFigure 1 andFigures 2a to 2e , with parts removed for clarity; -
Number 1 inFigure 1 indicates as a whole a labeling machine adapted to apply label sheets onto receptacles 2 advancing along an advancement path P. - The
labeling machine 1 comprises: - a web conveying and
splicing apparatus 3 adapted to convey a web of labelingmaterial 4 or a web of labelingmaterial 5 to adelivery station 6 and being adapted to splice, in particular in the case of exhaustion of respectivelyweb 4 orweb 5,web 5 toweb 4 orweb 4 toweb 5; - a
labeling apparatus 7 adapted to receiveweb 4 orweb 5 atdelivery station 6 and adapted to obtain single label sheets fromweb 4 orweb 5 and for applying, in use, the single label sheets onto receptacles 2 during their advancement along path P. - In the present case,
web 4 andweb 5 each comprises a repeated pattern (not shown), in particular the repeated pattern defining the single label sheets obtainable from respectivelyweb 4 andweb 5. More specifically,web 4 andweb 5 are provided with the same repeated pattern. In other words,web 4 andweb 5 allow for application of the same label sheets onto receptacles 2. - Furthermore, in the present description,
web 4 andweb 5 are of the type for providing for label sheets of the self-stick type, which become applied to receptacles 2 by means of an adhesive applied directly onto the label sheets and/or onto receptacles 2. - However, it must be understood that the description will refer to this kind of web without any limitative scope. It must be further understood, that the present invention can be executed also with any other kind of web, in particular any kind of web of labeling material, such as e.g. a web of labeling material having a base layer and a plurality of label sheets removably attached to the base layer (commonly known as "pressure-sensitive labels") or with a web of labeling material being of a heat-shrinkable material (for "sleeve lables").
- In more detail, labeling
apparatus 7 comprises: - a conveyor device, in particular a conveying carousel 8 adapted to advance receptacles 2 along path P, in particular path P being arc-shaped;
- a
cutting unit 9 for cutting the label sheets fromweb 4 orweb 5; and - a
transfer device 10 adapted to transfer the label sheets to a label application station at which the label sheets are applied onto respective receptacles 2; and - a
glue application unit 11 adapted to apply a pattern of glue onto the backside of the label sheets and/or onto the outer surface of receptacles 2 prior to the application of the label sheets onto the receptacles 2. - With particular reference to
Figures 2a to 2e , web conveying andsplicing apparatus 3 is adapted to splice a web in use and a new web to one another. In the particular example shown inFigures 2a to 2e ,web 4 is the web in use andweb 5 is the new web. However, it must be understood that after any splicing process the new web becomes the web in use, as specifically shown inFigure 2e . - In the following, we refer for reasons of simplicity to web in
use 4 andnew web 5. However, it must be considered that the description also refers toweb 5 being the web in use andweb 4 being the new web. - In more detail, web conveying and
splicing apparatus 3 comprises: - a
web magazine unit 15 for providing for web inuse 4 andnew web 5; - an
advancement device 16 adapted to at least continuously advance the web inuse 4 at a working advancement speed along a working advancement path Q from arespective storing station 17 todelivery station 6 and being adapted to advancenew web 5 along an auxiliary path R, in particular from the respective storingstation 17 to acollection station 18; and - an
application device 19 adapted to apply abonding element 20, in particular a bi-adhesive tape, onto (a segment of)new web 5 at anapplication station 21, inparticular application station 21 being interposed between the respective storingstation 17 andcollection station 18 along path R; - a
bonding device 22 adapted to adhesively bond web inuse 4 together withnew web 5 at abonding station 23 by attachingbonding element 20 also to (a segment of) web inuse 4, inparticular bonding station 23 being arranged betweenstation 17 and respectivelystation 6 andstation 18 along respectively path Q and path R, even moreparticular station 23 is positioned downstream ofapplication station 21 along path R;
and - a
cutting device 24 adapted to cut web inuse 4 at afirst cutting station 25, in particular cuttingstation 25 being arranged upstream ofbonding station 23 along path Q; and being adapted to cutnew web 5 at a second cutting station 26, in particular second cutting station 26 being positioned downstream ofbonding station 23 along path R and/or path Q. - Preferentially,
apparatus 3 also comprises acontrol unit 27 adapted to control at least operation ofapparatus 3 itself. - In particular,
control unit 27 is at least adapted to detect the respective pattern and/or a respective mark provided on web inuse 4 andnew web 5. Furthermore,control unit 27 is adapted to detectbonding element 20 applied tonew web 5. As will be explained in more detail further below,control unit 27 is also adapted to activatebonding device 22 in function of an analysis on whether a possible activation ofbonding device 22 leads to a correct or incorrect bonding ofnew web 5 with web inuse 4. - With particular reference to
Figures 2a to 2e ,web magazine unit 15 is adapted to removably receive afirst reel 30 carrying wound-upweb 4 and asecond reel 31 carrying wound-upweb 5. In particular,unit 15 is adapted to receive and to housereel 30 and reel 31 at therespective station 17 and such thatreel 30 and reel 31 are rotatable around respective central axes A, in particular axes A having a vertical orientation. - With particular reference to
Figures 2a to 2e ,advancement device 16 is configured such that path R is distinct from path Q, in particular prior to bondingnew web 5 with web inuse 4. In other words, path R and path Q are distinct from one another, in particular prior to activation ofbonding device 22. - Preferably, path R and path Q are parallel to each other at least in the area of
bonding station 23. - Preferentially,
advancement device 16 is adapted to advance web inuse 4 at a working advancement speed of 20 to 320 meters per minute, in particular of 60 to 280 meters per minute. -
Advancement device 16 is furthermore adapted to advance, in use,new web 5 at a splicing advancement speed equal to the working advancement speed of web inuse 4. - In particular,
device 16 is adapted to accelerate, in use,new web 5 to the splicing advancement speed equal to the working advancement speed. - Even more particular,
device 16 is adapted to accelerate, in use,new web 5 to the splicing advancement speed equal to the working advancement speed from a resting position ofnew web 5 as will be described in more detail further below. - Preferably,
device 16 is adapted to accelerate, in use,new web 5 to the advancement speed equal to the working advancement speed so that, in use, during activation ofbonding device 22 web inuse 4 andnew web 5 advance at the same speed, in particular at the same speed and the same pitch, along respectively path Q and path R. - Preferably,
advancement device 16 is also configured to advance web inuse 4 andnew web 5 at the same pitch (i.e. oncenew web 5 and web inuse 4 are bonded to one another, the patterns provided on web inuse 4 andnew web 5 overlap one another). - Preferentially,
advancement device 16 is also configured such that prior or during acceleration ofnew web 5 to the respective advancement speed the working advancement speed of web inuse 4 is (substantially) not altered. In particular, by accelerating, in use,new web 5 to the splicing advancement speed equal to the unaltered working advancement speed it is possible to splice, in use,new web 5 to web inuse 4 without influencing operation oflabeling apparatus 7. - In further detail,
advancement device 16 comprises at least a first drive unit, in particular an electrical motor (not shown) and at least a second drive unit, in particular an electrical motor (not shown), each one adapted to actuate rotation of respectively reel 30 and reel 31 around the respective axis A. - Furthermore,
device 16 comprises at least one collection device arranged atstation 18 and being adapted to advancenew web 5, in particular in collaboration withunit 15, along path R and to collectnew web 5. - In particular, the collection device comprises a wind-up
roller 32 arranged atstation 18 and being rotatable around a central axis B. The collection device also comprises at least one drive assembly, in particular an electrical motor (not shown), adapted to actuate rotation ofroller 32 around axis B. - More specifically
roller 32 is adapted to receive anew web 5, in particular a leading edge ofnew web 5.Roller 32 is also adapted to, in use, wind-upnew web 5 withnew web 5 advancing along path R. - In particular,
new web 5 extends fromreel 30 positioned at therespective station 17 toroller 32. In other words, reel 31 positioned at therespective station 17 androller 32 at least partially define in collaboration path R. - Preferably, the drive assembly and the second drive unit are adapted to control and/or actuate advancement of
new web 5 along path R, in particular by simultaneously actuating rotation of respectivelyroller 32 around axis B and reel 31 around axis A. - Preferentially,
advancement device 16 also comprises adeflection assembly 33 adapted to deviate/deflect web inuse 4 at a deflection station 34 downstream ofbonding station 23 along path Q and/or to deviate/deflectnew web 5 at deflection station 34 downstream ofbonding station 23 along path R. - In particular,
deflection assembly 33 is adapted to deviate/deflect, in use, in particular prior to activation of cuttingdevice 24 cuttingnew web 5 at station 26, web inuse 4 so as to define a main portion Q1 of path Q and an auxiliary portion Q2 of path Q downstream of portion Q1 along path Q. Even more particular, portion Q2 and portion Q1 define anobtuse angle 35. - In further detail,
deflection assembly 33 comprises at least a guide element, in particular adeflection roller 36, adapted to guide at least web inuse 4 at deflection station 34. - Preferentially, the guide element, in
particular deflection roller 36, is arranged, in particular rotatably arranged, at station 34. - Preferably, web in
use 4 is in position against the guide element, inparticular deflection roller 36, at deflection station 34. - Preferentially,
deflection assembly 33 also comprises acontrol group 37, in particular a pair ofdeflection rollers 38; and an actuation group (not shown) adapted to movecontrol group 37, in particular the pair ofguide rollers 38 into a direction D. Preferably, direction D being transversal to axes A (and to axes B); and direction D being also transversal to web inuse 4. In other words, direction D is also transversal to the direction of advancement of web inuse 4. - More specifically, the actuation group is adapted to control
control group 37, in particular the pair ofdeflection rollers 38 between at least twolateral positions 39 and at least acentral position 40. - In other words,
deflection assembly 33, in particular the actuation group, is adapted to at least partially define path Q, in particular to define portion Q2, by defining the exact position ofcontrol group 37. - In further detail,
advancement device 16 also comprises a plurality ofauxiliary rollers 41 interposed betweenstations 17 and respectivelystation 6 andstation 18 along respectively path Q and path R. - With particular reference to
Figures 2a to 2e ,application device 19 is configured to apply therespective bonding element 20 ontonew web 5 withnew web 5 being at rest (i.e.new web 5 is not advanced along path R, but extends between therespective station 17 and station 18). - In more detail,
application device 19 comprises adeposition assembly 43 containing or adapted to receive at least one, preferably a plurality, ofbonding elements 20 and being adapted to place at least onebonding element 20 ontonew web 5. In particular,deposition assembly 43 is adapted to be controlled between a rest configuration at whichdeposition assembly 43 is idle (on rest) and an operative configuration at whichdeposition assembly 43 is designed to place therespective bonding element 20 ontonew web 5. - Preferentially,
application device 19 also comprises acounter surface 44 adapted to cooperate withdeposition assembly 43 for securely applying therespective bonding element 20 ontonew web 5. In particular,counter surface 44 anddeposition assembly 43 are arranged such thatnew web 5 is interposed betweencounter surface 44 anddeposition assembly 43. Furthermore,deposition assembly 43 when being in the operative configuration is adapted to applybonding element 20 tonew web 5 and to exert a force towardscounter surface 44 so as to bringnew web 5 into contact withcounter surface 44. - With particular reference to
Figures 2a to 2e ,bonding device 22 comprises at least afirst interaction assembly 45 adapted to interact with web inuse 4 and at least asecond interaction assembly 46 adapted to interact withnew web 5. - More specifically,
interaction assembly 45 andinteraction assembly 46 are adapted to approach in collaboration with one another web inuse 4 andnew web 5 towards one another atstation 23 and to sandwich web inuse 4,bonding element 20 andnew web 5 in between themselves for adhesively coupling web inuse 4 andnew web 5 to one another. - Even more specifically,
interaction assembly 46 is adapted to movenew web 5 towards web inuse 4 andinteraction assembly 45 is adapted to at least contact web inuse 4 and, preferably, to also move web inuse 4 towardsnew web 5, in particular for coupling, in use,bonding element 20 also to web inuse 4. - In further detail,
interaction assembly 45 andinteraction assembly 46 each comprise arespective interaction roller 47 rotatable around a respective central axis C and arespective actuation group 48 adapted to move therespective interaction roller 47 to or away frombonding station 23, in particular for moving respectively web inuse 4 andnew web 5 towardsbonding station 23. - Preferably,
interaction assembly 45 andinteraction assembly 46 each comprise a respective driving assembly configured to rotate therespective interaction roller 47 around the respective axis C, in particular such that the surface speed of the respective interaction roller 47 (substantially) equals the working advancement speed of web in use 4 (and the advancement speed of new web 5). - With particular reference to
Figures 2a to 2e ,3 and4 ; cuttingdevice 24 comprises: - a
first cutting assembly 50 adapted to cut web inuse 4 at cuttingstation 25; and/or - a
second cutting assembly 51 adapted to cutnew web 5 at cutting station 26. - In more detail, with particular reference to
Figure 3 , cuttingassembly 50 comprises: - at least one
carrier structure 55 rotatable around a rotation axis E; - at least one
blade element 56 connected to (carried by)carrier structure 55 and extending at least partially parallel to axis E; and - a respective actuation group (not shown) adapted to actuate rotation of
carrier structure 55 around axis E so as to actuate rotation ofblade element 56 around axis E. - In further detail, actuation group is adapted to accelerate
blade element 56 to a speed (substantially) equal to the working advancement speed, in particular so thatblade element 56, in use, cuts web inuse 4 when advancing at a speed being at least substantially identical to or higher than the working advancement speed of web inuse 4, preferentially the speed being substantially identical to the working advancement speed. - In this way, unwanted forces possibly acting on web in
use 4 during the cutting are significantly reduced as the interaction ofblade element 56 with web inuse 4 during the cutting does not lead to a deceleration action on the advancing web inuse 4. - Preferably, each cutting
assembly 50 is also configured in such a manner that therespective blade element 56 advances in the moment of cutting web inuse 4 at cuttingstation 25 into a direction, which is substantially identical to the advancement direction of web inuse 4. Thereby, therespective blade element 56 does not necessarily advance parallel to the advancement direction of web inuse 4. - Preferentially, cutting
assembly 50 also comprises acounter surface element 57, in use, arranged in the area of cuttingstation 25 and adapted to cooperate withblade element 56 for cutting, in use, web inuse 4 at cuttingstation 25. - In more detail,
carrier structure 55 comprises arotatable shaft portion 58 being coaxially arranged to axis E and being coupled to the actuation group ofassembly 24; and - at least one
wing portion 59carrying blade element 56 and being connected to and protruding radial away from shaft portion 58 (i.e.wing portion 56 protrudes away from axis E). - Preferentially,
carrier structure 55 also comprises afurther wing portion 60 connected toshaft portion 58 and protruding away fromshaft portion 58. In particular,wing portion 60 is similar towing portion 59 and is designed such to guarantee that the center of gravity ofcarrier structure 55 is substantially positioned along axis E. - In more detail,
blade element 56 comprises a plurality ofjaws 61 defining a jaw-like structure of blade element 53. - In further detail,
counter surface element 57 comprises a plurality ofgrooves 62 adapted to cooperate withjaws 61. In particular,grooves 62 are complementary tojaws 61. In other words,grooves 61 define a grooved structure ofsurface element 57 complementary to the jaw-like structure ofblade element 56. Thus, in use, whenblade element 56 cuts web inuse 4 eachjaw 61 at least partially enters (penetrates) onerespective groove 62. - Preferentially, cutting
assembly 50 also comprises a displacement assembly (not shown) adapted to movecarrier structure 55 to or away from cuttingstation 25 for movingcarrier structure 55 between a base position at which therespective blade element 56 is detached from cutting station 25 (blade element 56 is positioned such that any contact between web inuse 4 andblade element 56 is avoided) and a cutting position at which therespective blade element 56 is placed at cutting station 25 (blade element 56 is adapted to cut web inuse 4 at cutting station 25). - In particular, the displacement assembly of cutting
assembly 50 is adapted to move, in use,carrier structure 55 into a direction transversal, even more particular perpendicular, to web inuse 4. - In more detail,
control unit 27 is adapted to control cuttingassembly 50 at least into an active configuration, at which cuttingassembly 50 is configured to cut web inuse 4, or into an inactive configuration, at which cuttingassembly 50 is detached from cutting station 25 (i.e.blade 56 is, in use, spaced apparat from web inuse 4, so as not to cut web in use 4) by controlling the displacementassembly cutting assembly 50. - In particular, cutting
assembly 50 is controlled into its active configuration withcarrier structure 55 being positioned at the cutting position; and cuttingassembly 50 is controlled into its inactive configuration withcarrier structure 55 being positioned at the base position. - Preferably, cutting
assembly 50 also comprises a positioning assembly (not shown) adapted to movecounter surface element 57 to or away from cuttingstation 25, in particular into a direction transversal, even more particular perpendicular, to web inuse 4. In other words, positioning assembly 64 is adapted to movecounter surface element 57 to or away from web inuse 4. In particular, the positioning assembly is activated for defining the (correct) relative position betweencounter surface element 57 andblade element 56, in particular so that, in use, eachjaw 61 penetrates into onerespective groove 62 during the cutting of web inuse 4. - Preferentially,
control unit 27 is adapted to set cuttingassembly 50 into at least a first operation mode and into a second operation mode. - In a first operation mode,
control unit 27 is configured to control cuttingassembly 50 into the inactive configuration prior to activation of cuttingassembly 50 and into an intermediate configuration prior to controlling cuttingassembly 50 into the active configuration. When cuttingassembly 50 is controlled into the intermediate configuration, the actuation assembly of cuttingassembly 50 is activated forrotating blade element 56 around axis E andblade element 56 is still distanced from web inuse 4. In other words,blade element 56 rotates, but does not cut web inuse 4. This allows, in use, to accelerateblade element 56 to the respective advancement speed being at least equal to the working advancement speed while allowing for continuously rotatingblade element 56 around axis E. - In more detail, in the first operation mode, cutting
assembly 50 is controlled such that prior to the cuttingcarrier structure 55 is moved to the base position, the actuation assembly actuates rotation ofcarrier structure 55, in particular so that the advancement speed ofblade 56 substantially equals the working advancement speed, and thencarrier structure 55 is moved to the cutting position so thatblade 56 cuts web inuse 4. - In the second operation mode,
control unit 27 is configured to control cuttingassembly 50 such that prior to activation of rotation of blade element 56 (and of carrier structure 55),carrier structure 55 is arranged at the cutting position. Then, controlunit 27 controls the actuation assembly to actuate rotation ofblade element 56 around axis E. In particular, whencarrier structure 55 is arranged at the cutting position,blade element 56 is arranged at an axial position (at a rest position), which allows to accelerateblade element 56 to the advancement speed substantially equal to the working advancement speed. - Preferably,
control unit 27 is also configured such that after cutting web inuse 4 at cutting station 25 (both in the first operation mode and the second operation mode; i.e. independent of the operation mode)blade element 56 is decelerated, inparticular blade element 56 is set to rest, even more preferablyblade element 56 is decelerated by reducing the rotation speed ofblade element 56 around axis E until the complete interruption of rotation ofblade element 56 around axis E. - With particular reference to
Figures 2c ,2d and4 , cuttingassembly 51 is configured such to cutnew web 5 in the area of, in particular at, deflection station 34, in particular while cooperating withdeflection assembly 33, even more particular while cooperating with the guide element, inparticular deflection roller 36. - In other words, cutting station 26 is arranged in the area of deflection station 34, in particular cutting station 26 and deflection station 34 are substantially identical.
- It must be noted, that, in use, (shortly) prior to cutting
assembly 51 cuttingnew web 5 at cutting station 26,new web 5 being spliced to web inuse 4 atbonding station 23 comprises anauxiliary web portion 68, which is transversally oriented with respect to web inuse 4, in particular, which extends from cutting station 26 (or deflection station 34) tocollection station 18. - In other words,
auxiliary web portion 68 protrudes away, in use, from web inuse 4. - In even other words, in use,
new web 5 is deflected at cutting station 26 such thatauxiliary web portion 68 protrudes away from web inuse 4. - It should be noted that
auxiliary web portion 68 being transversally oriented with respect to web inuse 4 guarantees the presence of a vertex (a cutting edge) so as to cutnew web 5 at cutting station 26 at the vertex (and, thereby avoiding to cut web in use 4). In particular, the vertex evolves in the area ofdeflection roller 36. Even more particular, the vertex is at least partially defined by cooperation of web inuse 4 withdeflection roller 36. - It should be furthermore noted that as web in
use 4 andnew web 5 are bonded to one another,new web 5 also comprises amain web portion 67 being at least partially parallel to web inuse 4 betweenbonding station 23 and cutting station 26. - In particular, in use, at the moment of cutting
assembly 51 cuttingnew web 5 at cutting station 26,auxiliary web portion 68 extends from cutting station 26 tocollection station 18 andmain web portion 67 extends betweenbonding station 23 and cutting station 26. - In other words,
main web portion 67 andauxiliary web portion 68 define a respective angle and the respective vertex is positioned at station 26 (and/or station 34). - It must be further noted, that as a result of the splicing of web in
use 4 andnew web 5, path R of new 5 is dynamic (i.e. path R varies due to the advancement of web inuse 4 along path Q, the coupling ofnew web 5 to web inuse 4 and to the collection device, in particular toroller 32. - In more detail, cutting
assembly 51 comprises: - at least one
blade member 69 adapted to cutnew web 5 at cutting station 26; and - an
acceleration assembly 70 adapted to accelerateblade member 69 from a rest position towards and through cutting station 26 for cuttingnew web 5. - In particular,
acceleration assembly 70 is adapted to accelerateblade member 69 such thatblade member 69 cuts, in use,new web 5 tangential todeflection roller 36 at deflection station 34 and/or cutting station 26. - Even more particular,
acceleration assembly 70 is configured such that the advancement speed ofblade member 69 is at least equal to the splicing advancement speed (advancement speed of new web 5), preferably larger than the splicing advancement speed ofnew web 5 at the moment of cuttingnew web 5. - Preferably,
acceleration assembly 70 is also adapted to decelerateblade member 69 after cutting ofnew web 5. - In even more detail,
acceleration assembly 70 comprises: - a
linear motor 71 adapted to accelerate andadvance blade member 69 along a rectilinear path S; and - a
support structure 72, in particular having an L-like shape, coupled tolinear motor 71 and carryingblade member 69. - In particular,
linear motor 71 is adapted to accelerate and to advancesupport structure 72 for accelerating and advancingblade member 69. - Preferably,
support structure 72 comprises a longitudinalmain portion 73 extending parallel to amain body 74 oflinear motor 71; and atransversal portion 75 transversally arranged tomain portion 73 and carryingblade member 69. - Furthermore,
control unit 27 comprises at least afirst detection sensor 77 adapted to detect a pattern and/or a mark provided onnew web 5 at adetection station 78 upstream ofbonding station 23 along path R. - Preferentially,
control unit 27 also comprises at least asecond detection sensor 79 adapted to detect a pattern and/or a mark provided on web in use at adetection station 80 upstream ofbonding station 23 along path Q. - In further detail,
detection sensor 77 is also adapted to detectbonding element 20 applied ontonew web 5. - Preferentially,
control unit 27 is adapted to calculate and/or to predict: - based on the pattern and/or mark detected by
detection sensor 77 and thebonding element 20 detected bydetection sensor 77, in particular the relative position ofbonding element 20 with respect to the pattern and/or the mark; - the working advancement speed of web in
use 4; and - the advancement speed of
new web 5; - It must be noted that preferably a correct splicing is a splicing of
new web 5 and web inuse 4 so that the respective patterns of web inuse 4 andnew web 5 correctly or incorrectly overlap. The correct overlap is when the respective patterns substantially match each other and the incorrect overlap is when the patterns do not match each other. In other words, web inuse 4 andnew web 5 have the same pitch. -
Control unit 27 is also adapted to calculate and/or to predict the correct or incorrect splicing based on the pattern and/or mark detected, in use, bydetection sensor 79. - Furthermore,
control unit 27 is adapted to activatebonding device 22 for splicing web inuse 4 andnew web 5 with one another in case of calculating and/or to predicting a correct splicing and it is adapted not to activatebonding device 22 in the case of calculating and/or to predicting an incorrect splicing. In this way, it is ensured that, in use, no erroneous splicing occurs. - Preferentially,
control unit 27 is also adapted not to activate cuttingdevice 24, in particular cuttingassembly 50 and cuttingassembly 51, in the case ofcontrol unit 27 calculating and/or to predicting, in use, an incorrect splicing. - In use,
machine 1 applies label sheets onto receptacles 2 advancing along path P. In particular,apparatus 7 advances receptacles 2 along path P and simultaneously receives web inuse 4 atstation 6, cuts web inuse 4 into single label sheets and applies the single label sheets on the respective receptacles 2. - In particular,
apparatus 3 advances web inuse 4 todelivery station 6. Even more particular, web inuse 4 advances along path Q fromstation 17 tostation 6. - Web in
use 4 is provided withinmagazine unit 15, in particular web inuse 4 is wound-up ontoreel 30. As after a given time web inuse 4 exhausts, in order to extend operation ofmachine 1 without interruption, a splicing process ofnew web 5 to web inuse 4 is activated. - Advantageously, with particular reference to
Figures 2a to 2e , the splicing process ofnew web 5 to web inuse 4 comprises: - a first advancement phase during which web in
use 4 is continuously advanced at the working advancement speed along advancement path Q, in particular from therespective station 17 tostation 6; - a second advancement phase during which
new web 5 is advanced along path R at the splicing advancement speed being substantially equal to the working advancement speed; and - a bonding phase during which web in
use 4 andnew web 5 are adhesively bonded to one another atbonding station 21. - The splicing process also comprises:
- a web in use cutting phase during which the web in
use 4 is cut by means of therespective blade element 56 at cuttingstation 25 while therespective blade element 56 advances at a respective advancement speed being at least equal to the working advancement speed; and/or - a new web cutting phase during which
new web 5 is cut by means of therespective blade member 69 at a respective cutting station 26 while therespective blade member 69 advances at a respective advancement speed being at least equal to the working advancement speed, preferentially being larger than the working advancement speed. - Preferentially, the splicing comprises the web in use cutting phase and the new web cutting phase.
- Preferably, the splicing process also comprises:
- an arrangement phase during which
new web 5 is arranged, in particular between therespective station 17 andstation 18, such that at least a portion ofnew web 5 is spaced apart and adjacent to the advancing web inuse 4 in the area ofbonding station 23; and - an application phase during which
bonding element 20 is applied ontonew web 5 atapplication station 21. - In more detail, during the first advancement phase,
advancement device 16 advances web inuse 4 along path Q. In particular, the first drive unit ofadvancement device 16 actuates rotation ofreel 30 around the respective axis A. - Preferentially, during the first advancement phase the working advancement speed remains substantially unvaried.
- Furthermore, during the first advancement phase also a deflection sub-phase is executed during which
deflection assembly 33 is controlled such that web inuse 4 is deflected at station 34 so that web inuse 4 advances portions Q1 and Q2 which define anobtuse angle 35. In particular, the deflection sub-phase is at least executed prior to the new web cutting phase. - In further detail, during the deflection
sub-phase control group 37 is positioned such that web inuse 4 is in contact withdeflection roller 36 at deflection station 34. - In more detail, the second advancement
phase advancement device 16 advancesnew web 5 at the splicing advancement speed along path R. - Preferably, during the second advancement phase an acceleration sub-phases is executed during which
new web 5 is accelerated to the splicing advancement speed along path R. In particular, the acceleration sub-phase is executed during start of the second advancement phase. - In more detail, during the acceleration
sub-phase advancement device 16 acceleratesnew web 5 to the splicing advancement speed which is substantially identical to the working advancement speed andadvancement device 16 advancesnew web 5 along path R. - In particular, during the second advancement phase
new web 5 is wound-up fromreel 31 and is wound-on ontoroller 32. - In even more detail, the second drive unit of
advancement device 16 actuates rotation ofreel 31 around the respective axis A and the drive assembly of the collection device actuates rotation ofroller 32 around axis B. - During the second advancement phase and prior to the bonding phase
new web 5 is continuously advanced at the splicing advancement speed being substantially identical to the working advancement speed. - Preferably, the splicing advancement speed equals the working advancement speed during the execution of the bonding phase.
- In more detail, the bonding phase is executed such that the respective patterns of
new web 5 and web inuse 4 match one another after bonding ofnew web 5 and web inuse 4. - In particular, with particular reference to
Figure 2b , during the bonding phase web inuse 4 andnew web 5 are bonded to one another by attachingbonding element 23 also to web inuse 4 atbonding station 23. - In more detail, during the bonding
phase bonding device 22 approaches web inuse 4 andnew web 5 atbonding station 23 to one another until bondingelement 20 also adheres to web inuse 4. - In further detail, during the bonding
phase interaction assembly 45 andinteraction assembly 46 move web inuse 4 andnew web 5 towards one another, inparticular interaction assembly 45 moves web inuse 4 towardsnew web 5 andinteraction assembly 46 movesnew web 5 towards web inuse 4. - In even further detail, during the bonding phase the
respective interaction rollers 47 rotate around the respective axes C and therespective actuation group 48 moves therespective interaction rollers 47 towards one another. In particular,interaction rollers 47 rotate at speeds so that the respective surface speeds equal the working advancement speed and the splicing advancement speed. - In more detail, with particular reference to
Figure 2c , the web in use cutting phase is executed during or after the bonding phase. - In particular, during the web in use cutting
phase cutting assembly 51 cuts web inuse 4 at cuttingstation 25 by therespective blade element 56. - Preferably, during cutting web in
use 4 at the respective cuttingstation 25blade element 56 advances at the respective advancement speed being at least substantially equal to the working advancement speed, preferentially being equal to the working advancement speed. - Preferentially, during the web in use cutting
phase blade element 56 advances at least during the cutting of web inuse 4 into a direction, which is substantially identical to the advancement direction of web inuse 4. Thereby, therespective blade element 56 does not necessarily advance parallel to the advancement direction of web inuse 4. - More specifically, during the web in use cutting
phase blade element 56 rotates around axis E, in particular at a rotation speed so that therespective blade element 56 advances at the speed being at least substantially identical to the working advancement speed. - Even more specifically, during the web in use cutting phase the actuation assembly of cutting
assembly 50 actuates rotation ofcarrier structure 55 around axis E so thatblade element 56 cuts web inuse 4, in particular in cooperation withcounter surface element 57. - In particular, during the web in use cutting
phase cutting assembly 50 is controlled bycontrol unit 27 to operate in the first operation mode or the second operation mode. - In the first operation mode, cutting
assembly 50 is controlled such that prior to the cutting of web inuse 4carrier structure 55 is moved to the base position, the actuation assembly actuates rotation of carrier structure 55 (cuttingassembly 50 is set into the intermediate configuration), in particular so that the respective advancement speed ofblade 56 substantially equals the working advancement speed, and thencarrier structure 55 is moved to the cutting position so thatblade 56 cuts web inuse 4. - In the second operation mode,
control unit 27controls cutting assembly 50 such that prior to activation of rotation of blade element 56 (and of carrier structure 55),carrier structure 55 is arranged at the cutting position. Then, controlunit 27 controls the actuation assembly to actuate rotation ofblade element 56 around axis E. In particular, whencarrier structure 55 is arranged at the cutting position,blade element 56 is arranged at the axial position so that the acceleration ofblade element 56 leads to the respective advancement speed of theblade element 56 being substantially equal to the working advancement speed at least in the moment of cutting web inuse 4. - Preferably, after cutting web in
use 4 at cutting station 25 (both in the first operation mode and the second operation mode; i.e. independent of the operation mode)blade element 56 is decelerated, inparticular blade element 56 is set to rest, even more preferablyblade element 56 is decelerated by reducing the rotation speed ofblade element 56 around axis E until the complete interruption of rotation ofblade element 56 around axis E. - In more detail, with particular reference to
Figures 2b and2c , the new web cutting phase is executed during or after the bonding phase, preferentially after the bonding phase. - In particular, during the new cutting
phase cutting assembly 51 cutsnew web 5 at cutting station 26. - Even more particular, during the new web cutting
phase blade member 69 is accelerated, in particular byacceleration assembly 70, from the respective rest position towards and through cutting station 26, in particular so thatblade member 69 advances at an advancement speed being at least equal to, preferentially higher than the splicing advancement speed of new web 5 (and the working advancement speed of web in use 4) at the moment of cuttingnew web 5 at station 26. - In more detail, during the new web cutting
phase blade member 69 is accelerated along path S, in particular being linear, into a direction being substantially identical to the advancement direction of web inuse 4. During advancement ofblade member 69 along path S,blade member 69 is not necessarily parallel to web inuse 4. This leads to a significant reduction of detachingbonding element 20 fromnew web 5 and/or web inuse 4 when compared to a cutting against the advancement direction of web inuse 4 andnew web 5. - Preferentially, during the new web cutting phase and at least after the cutting of
new web 5 at cutting station 26,blade member 69 advances parallel to web inuse 4. In particular, after the cutting ofnew web 5 at cutting station 26blade member 69 advances parallel to web inuse 4 for a certain time needed to decelerateblade member 69. - In further detail, during the new web cutting phase and at the moment of cutting
new web 5 at cutting station 26new web 5 hasauxiliary web portion 68 being transversal to web inuse 4 andblade member 69 cutsnew web 5 at the vertex, which results fromauxiliary web portion 68 protruding away from web inuse 4 at cutting station 26. In particular,new web 5 is cut byblade member 69 at the vertex while cooperating withdeflection roller 36. - In other words,
new web 5 is deflected away from web inuse 4 at cutting station 26. - In the particular example shown in
Figure 2e , during a first sub-phase of the new web cuttingphase blade member 69 advances transversal to portion Q1 of path Q and during a second sub-phase of the new web cuttingphase blade member 69 advances parallel to portion Q2 of path Q. - In particular, during the new web cutting phase at the moment of
blade member 69 cuttingnew web 5,main web portion 67 andauxiliary web portion 68 define the respective angle with one another and the respective vertex is positioned at cutting station 26 (and at deflection station 34). I.e.blade member 69 cutsnew web 5 at the respective vertex from whichauxiliary web portion 68 andmain web portion 67 extend. - Preferably,
blade member 69 cutsnew web 5 tangential toroller 36 at deflection station 34. In other words,blade member 69 cutsnew web 5 at deflection station 34 whenauxiliary web portion 68 extends from station 34 tocollection station 18. - More specifically,
linear motor 71 accelerates and advancesblade member 69 along path S, in particular path S being substantially parallel to portion Q2 of path Q. Even more specifically,linear motor 71 acceleratesblade member 69 by acceleratingsupport structure 72. - Preferably, the splicing operation further comprises an analyzes phase, in particular executed prior to the bonding phase, during which it is calculated and/or predicted whether after execution of the bonding phase the new web and the web in use would result in a correct or incorrect splicing.
- In particular, during the analyzes
phase control unit 27 calculates and/or predicts whether the respective patterns ofnew web 5 and web inuse 4 would match if the bonding phase is executed (correct splicing) or they would not match if the bonding phase is executed (incorrect splicing). - In more detail, during the analyzes phase at
least detection sensor 77 detects the pattern and/or the mark onnew web 5 andbonding element 20, in particular the relative positioning ofbonding element 20 with respect to the pattern and/or the mark. - Furthermore, preferentially, during the analyzes
phase control unit 27 calculates and/or predicts whether execution of the bonding phase would result in a correct or incorrect splicing, in particular whether the respective patterns of web inuse 4 andnew web 5 would match one another or not: - based on the pattern and/or the mark detected by
detection sensor 77 and thebonding element 20 detected by thedetection sensor 77, in particular the relative position betweenbonding element 20 and the pattern and/or the mark; - the working advancement speed of web in
use 4; and - the splicing advancement speed of
new web 5. - Preferably, the calculation and/or the prediction is also based on the pattern and/or mark detected by
detection sensor 79. - Preferably, if during the analysis phase it is predicted and/or calculated that the execution of the bonding phase would result in an incorrect splicing, the bonding phase will not be executed. In such a case also the web in use cutting phase and the new web cutting phases will not be executed. Then, the splicing operation will be repeated until web in
use 4 andnew web 5 are bonded to one another. - In the case that a correct splicing is predicted and/or calculated, the bonding phase and the web in use cutting phase and the new web cutting phase are regularly executed.
- Preferentially, the splicing operation also comprises a positioning phase executed after the application phase and prior to the acceleration and advancement phase during which
new web 5 is advanced to positionbonding element 20 at a starting position, in particular upstream ofbonding station 23, even more particular interposed betweenbonding station 23 and therespective station 17, along path R. - Preferably,
control unit 27 controls positioning ofbonding element 20, in particular based on the relative position of the pattern and/or the mark onnew web 5 andbonding element 20 as detected bydetection sensor 77. - In more detail, the starting position is chosen such to guarantee that the respective patterns of web in
use 4 andnew web 5 match once web inuse 4 andnew web 5 are bonded to one another. Preferably, the starting position is also chosen such that the splicing advancement speed ofnew web 5 is identical to the working advancement speed of web inuse 4 when executing the bonding phase. - In other words, positioning of
bonding element 20 is such that execution of the bonding phase and the execution of the acceleration and advancement phase lead to a bonding of web inuse 4 andnew web 5 such that the respective patterns match. - In even other words, positioning of
bonding element 20 is to ensure that the risk that the calculation and/or prediction of an incorrect splicing during the prediction phase is limited. - With particular reference to
Figure 2e , after splicing ofnew web 5 to web inuse 4,web 4 becomes the web in use and is further advanced tostation 6. - Preferably, a loading phase is executed during which a
new reel 30 having a wound-upweb 4 is placed at therespective station 17. Thenweb 4 is arranged in the manner as described above betweenstation 17 andstation 18 so thatweb 4 is ready to be spliced toweb 5. In other words,web 4 becomes the new web. The splicing ofweb 4 toweb 5 is then executed according to the above described phases at the appropriate moment. - The advantages of
apparatuses 3 according to the present invention will be clear from the foregoing description. - In particular, an advantage of
apparatuses 3 resides in cutting of web inuse 4 andnew web 5 by respectively cuttingassembly 50 and cuttingassembly 51, which reduce tensional forces acting on respectively web inuse 4 andnew web 5 at the moment of cutting, in particular as the respective blade cutting web inuse 4 and new 5 advance at a speed themselves which equals at least the working advancement speed. - Another advantage is that as
blade element 56 of cuttingassembly 50 cutting web inuse 4 advances in the moment of cutting at the same speed as the web inuse 4 it is possible to perform the splicing process without reducing the working advancement speed (and the splicing advancement speed). - A further advantage is that as
blade member 69 advances at the moment of the cutting ofnew web 5 at a speed being higher than the splicing advancement speed (and therewith also of the working advancement speed) guaranteeing thereby to maintain the splicing advancement speed and the working advancement speed. - Furthermore, as
blade member 56 advances at the moment of cutting web inuse 4 into the same direction as web inuse 4 no forces into the opposite direction act onto web inuse 4 during its cutting. - Additionally, as
blade member 69 advances during the new web cutting phase into the direction of new web 5 (and web in use 4) no forces act ontonew web 5 into the direction opposite of the advancement direction. This also avoids therisk bonding element 20 detaching fromnew web 5 and/or web inuse 4 when compared to a cutting against the advancement direction of web inuse 4 andnew web 5. - Furthermore, as the cutting of web in
use 4 and/ornew web 5 is such to have no influence on the advancement of web inuse 4 andnew web 5 the working advancement speed can be maintained constant. This is particularly advantageous in the new compact receptacle processing machines, which are known to operate in a blocked configuration (i.e. the varying treatment machines of the compact receptacle processing machine operate at the same processing speed), as in these machines a reduction of the working advancement speed of web inuse 4 would have significant influence on operation of the other treatment machines. - Clearly, changes may be made to
apparatus 3 as described herein without, however, departing from the scope of protection as defined in the accompanying claims.
Claims (16)
- Method of splicing a new web (5, 4) to a web in use (4, 5) comprising:- a first advancement phase during which the web in use (4, 5) is advanced at a working advancement speed along a working advancement path (Q);- a second advancement phase during which the new web (5, 4) is advanced along an auxiliary path (R) at a splicing advancement speed being substantially equal to the working advancement speed; and- a bonding phase during which the web in use (4, 5,) and the new web (4, 5) are adhesively bonded to one another at a bonding station (21);the method further comprises:- a web in use cutting phase during which the web in use (4, 5) is cut by means of a respective blade element (56) at a respective cutting station (25) and during which the respective blade element (56) advances, at least during the cutting of the web in use (4, 5) at a speed being at least equal to the working advancement speed; and/or- a new web cutting phase during which the new web (5, 4) is cut by means of a respective blade member (69) at a respective cutting station (26) while the respective blade member (69) advances, at least at the moment of cutting the new web (5, 4)at a speed being at least equal to the working advancement speed.
- The method according to claim 1, wherein during the web in use cutting phase the blade element (56) advances at least during the cutting of the web in use (4, 5) into a respective direction, which substantially equals the advancement direction of the web in use; and/or
wherein during the new web cutting phase the blade member (69) advances at least during the cutting of the new web (5, 4) into a respective direction, which substantially equals the advancement direction of the web in use (4, 5). - The method according to claim 1 or 2, wherein during the web in use cutting phase the respective blade element (56) cooperates with a respective counter surface (57) for cutting the web in use (4, 5).
- The method according to claim 3, wherein the blade element (56) comprises a plurality of jaws (61) and the respective counter surface (57) comprises a plurality of grooves (62) complementary to the jaws (61);
wherein during the web in use cutting phase and at the moment of cutting web in use (4, 5) each jaw (61) penetrates into one respective groove (62). - The method according to any one of the preceding claims, wherein during the web in use cutting phase the respective blade element (56) rotates around a respective rotation axis (E) at a rotation speed ensuring that at the moment of cutting the web in use (4, 5) the speed of the respective blade element (56) is at least substantially equal to the working advancement speed.
- The method according to claim 5, wherein during the web in use cutting phase the blade element (56) is accelerated from a rest position so as to advance at the moment of cutting web in use (4, 5) at a speed being at least substantially equal to the working advancement speed.
- The method according to claim 5, wherein during the web in use cutting phase a carrier structure (55) carrying the blade element (56) is moved to a base position so that the blade element (56) is detached from the cutting station (25), the blade element (56) is set to rotate around the rotation axis (E) by rotating the carrier structure (55) around the rotation axis (E) and the rotation speed is accelerated such that the advancement speed of the blade element (56) is at least substantially equal to the working advancement speed and, then, the carrier structure (55) is moved to a cutting position so that the blade element (56) cuts the web in use (4, 5) at the cutting station (25).
- The method according to any one of the preceding claims, wherein during the new web cutting phase the blade member (69) advances along a linear path (S) through the respective cutting station (26).
- The method according to claim 8, wherein during the new web cutting phase the blade member (69) is accelerated along the linear path (S), in particular by means of a linear motor (71), so that the advancement speed of the blade member (69) is at least substantially equal to the working advancement speed when cutting the new web (5, 4) at the respective cutting station (26).
- The method according to claim 9, wherein during the new web cutting phase and after the cutting of the new web (5, 4) at the respective cutting station (26), the blade member (69) is decelerated.
- The method according to any one of the preceding claims, wherein during the new web cutting phase and after the cutting of the new web (5, 4) at the respective cutting station (26), the blade member (69) advances at least for a certain time parallel to the web in use (4, 5).
- The method according to any one of the preceding claims, wherein during the new web cutting phase and during the cutting of the new web (5, 4) at the respective cutting station (26) the new web (5, 4) and/or the web in use (5, 4) are advanced along respectively the working advancement path (Q) and the auxiliary advancement path (R) such at least an auxiliary portion (68) of the new web (5, 4) is transversal to the web in use (4, 5) at the cutting station (26) and a vertex is present between the web in use (4, 5) and the new web (5, 4) at the cutting station (26);
wherein the blade member (69) cuts the new web (5, 4) at the vertex. - The method according to any one of the preceding claims, wherein during the advancement phase the web in use (4, 5) and/or the new web (5, 4) is/are deflected at a deflection station (34) downstream of the bonding station (23) along respectively the web advancement path (Q) and the auxiliary advancement path (R); and
wherein during the new web cutting phase the blade member (69) is accelerated towards and through the deflection station (34) so that the blade member (69) cuts the new web (5, 4) at the deflection station (34). - The method according to claim 13, wherein during the new web cutting phase the web in use (4, 5) is guided at the deflection station (34) by a guide element arranged at the deflection station (34).
- The method according to claim 13 or 14, wherein during the new web cutting phase the blade member (69) cuts the new web (5, 4) tangential to a deflection roller (36) arranged at the deflection station (34).
- The method according to any one of the preceding claims, wherein during the second advancement phase an acceleration sub-phase is executed during which the new web (5, 4) is accelerated to the splicing advancement speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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EP17306156.5A EP3453660B1 (en) | 2017-09-07 | 2017-09-07 | Method for splicing webs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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EP17306156.5A EP3453660B1 (en) | 2017-09-07 | 2017-09-07 | Method for splicing webs |
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EP3453660A1 true EP3453660A1 (en) | 2019-03-13 |
EP3453660B1 EP3453660B1 (en) | 2020-12-02 |
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EP17306156.5A Active EP3453660B1 (en) | 2017-09-07 | 2017-09-07 | Method for splicing webs |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109989972A (en) * | 2019-04-17 | 2019-07-09 | 嘉兴济铭商贸有限公司 | A kind of backlight module clamping mechanism |
CN112141780A (en) * | 2019-06-26 | 2020-12-29 | 虹霓机械制造有限公司 | Device and method for connecting two material webs respectively unwound from bobbins |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1601601A2 (en) * | 2003-03-13 | 2005-12-07 | Fabio Perini S.p.A. | An unwinder device for reels of web-like material with temporary accumulator members for the material unwound in the phase of reel substitution and relative method |
US6978816B1 (en) * | 2004-12-17 | 2005-12-27 | The Procter & Gamble Company | Method and apparatus for splicing a web material |
EP1694592A1 (en) * | 2003-11-28 | 2006-08-30 | RENT S.r.l. | Double unwinder unit for rolls of sheet-like material provided with a device for splicing the sheets being unwound |
-
2017
- 2017-09-07 EP EP17306156.5A patent/EP3453660B1/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1601601A2 (en) * | 2003-03-13 | 2005-12-07 | Fabio Perini S.p.A. | An unwinder device for reels of web-like material with temporary accumulator members for the material unwound in the phase of reel substitution and relative method |
EP1694592A1 (en) * | 2003-11-28 | 2006-08-30 | RENT S.r.l. | Double unwinder unit for rolls of sheet-like material provided with a device for splicing the sheets being unwound |
US6978816B1 (en) * | 2004-12-17 | 2005-12-27 | The Procter & Gamble Company | Method and apparatus for splicing a web material |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109989972A (en) * | 2019-04-17 | 2019-07-09 | 嘉兴济铭商贸有限公司 | A kind of backlight module clamping mechanism |
CN112141780A (en) * | 2019-06-26 | 2020-12-29 | 虹霓机械制造有限公司 | Device and method for connecting two material webs respectively unwound from bobbins |
EP3757046A1 (en) * | 2019-06-26 | 2020-12-30 | Hauni Maschinenbau GmbH | Device and method for joining two sheets of material each running from a reel |
EP4282797A3 (en) * | 2019-06-26 | 2024-01-10 | Körber Technologies GmbH | Device and method for joining two sheets of material each running from a reel |
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