EP4452803A1 - Verfahren und vorrichtung zum handhaben einer materialbahn - Google Patents
Verfahren und vorrichtung zum handhaben einer materialbahnInfo
- Publication number
- EP4452803A1 EP4452803A1 EP22840048.7A EP22840048A EP4452803A1 EP 4452803 A1 EP4452803 A1 EP 4452803A1 EP 22840048 A EP22840048 A EP 22840048A EP 4452803 A1 EP4452803 A1 EP 4452803A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carriage
- housing
- web
- material web
- negative pressure
- 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.)
- Pending
Links
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
- B65H20/00—Advancing webs
- B65H20/30—Arrangements for accumulating surplus web
- B65H20/32—Arrangements for accumulating surplus web by making loops
- B65H20/34—Arrangements for accumulating surplus web by making loops with rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/50—Machine elements
- B65H2402/53—Guideways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
- B65H2406/31—Suction box; Suction chambers
- B65H2406/311—Suction box; Suction chambers for accumulating a loop of handled material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/21—Accumulators
- B65H2408/215—Accumulators supported by vacuum or blown air
Definitions
- the present invention relates to a device for handling a material web as part of a manufacturing process for producing packaging from or involving the material web, in particular for producing bags from a (film) tubular web and a method for handling such a material web.
- Bags made of plastic film are often used as outer packaging for hygiene items such as diapers, sanitary napkins, etc.
- prefabricated bags can be used as part of the packaging process.
- the bags can also be produced quasi "online" within the packaging process from suitable webs of material, such as plastic films that are available as endless tubular material. It is known to unwind the corresponding tubular web from a bobbin in cycles, to convey it further in cycles by means of a preferential unit and then in the process—also in cycles—to process it into a bag.
- the web of material is subjected to high loads as part of the intermittent deduction or unwinding from the bobbin due to the high inertia of the same, which, among other things, has a negative effect on the material. If necessary, intermediate pendulum systems as intermediate storage cannot sufficiently compensate for these loads, especially with high bobbin weights or very high cycle speeds, so that there are also limits to the process speed.
- a device therefore has a loop store for the material web, which is arranged in particular in a vertical plane and has a preferably box-shaped housing open on one side, in which a carriage for guiding the material web, which is preferably guided in a vertical plane, is arranged
- the housing can be moved back and forth in particular in a straight line in two opposite directions, preferably up and down in a vertical plane, with the respective entrainment of a particular U-shaped section of the web of material.
- It also has a vacuum device which is designed in such a way that it can build up a vacuum in the housing on a vacuum side of the carriage, which exerts a force on the carriage directed in one of the directions of movement, in particular a force directed downwards.
- the carriage is guided laterally to reduce and/or prevent movements transverse to the back and forth movements by longitudinal guides arranged in the housing and interacting with the carriage, in particular by guide grooves into which a guide means of the carriage engages.
- such a loop storage device also withstands high loads, as occurs, for example, when using comparatively wide and heavy material webs, such as tubular webs made of plastic film, and correspondingly heavy bobbins on which the material webs are then each wound up.
- inventive guidance of the carriage in the housing of the loop store by the longitudinal guides enables sufficiently reliable operation.
- a longitudinal guide in particular a guide groove
- a longitudinal guide groove can be arranged on each of two, in particular parallel, spaced opposite inner sides of the housing, which is perpendicular to the material web section guided in the housing or to the flat sides of the material web section guided in the housing Material web section runs.
- one each Longitudinal guide extending parallel to the plane, in particular vertical, in which the reciprocating movement of the carriage takes place.
- the carriage can be designed in such a way that material webs of different widths can be guided along the rotatably mounted deflection roller.
- the carriage can also be designed and adapted to the housing in such a way that it completely or partially seals off a first partial chamber of the housing, which is adjacent to the open side of the housing on the other side of the carriage, in a gas-tight or airtight manner from a vacuum chamber of the housing that is on this side of the carriage between the carriage and the open housing side opposite, closed side of the housing.
- the vacuum side of the carriage can face the vacuum space and have a cavity that is open in the direction of the vacuum space or in the direction of the closed housing side of the housing.
- the carriage can have a cap-shaped end piece on its negative pressure side, which faces the closed side of the housing, the inside of the cap-shaped end piece delimiting one or the open cavity and facing the closed side of the housing.
- a stop piece of a stop for the carriage made of an elastic material, in particular rubber, can be arranged in the movement path of the carriage and at a distance from the closed side of the housing, which stops or prevents further movement of the carriage in the direction of the closed side of the housing .stops.
- the stop piece can be a free end piece of a rubber buffer forming the stop, which is connected to the closed side of the housing, in particular is fastened there, and protrudes into the vacuum chamber.
- the device can also have a sensor device with which the current position of the carriage in the housing can be monitored, in particular one a sensor device comprising a magnetic cylinder sensor, a sensor device using the principle of laser triangulation or a sensor device using ultrasound.
- a sensor device comprising a magnetic cylinder sensor, a sensor device using the principle of laser triangulation or a sensor device using ultrasound.
- the device has a first, continuously operating conveying device, in particular a first, motor-driven advancing unit with at least one motor-driven advancing roller, with which the web of material, which is in particular wound up on a bobbin, is continuously fed for compensation between continuous and intermittent conveying movement can be conveyed, and a second, intermittently operating conveying device arranged downstream of the loop accumulator, in particular a second, motor-driven advancing unit with at least one motor-driven advancing roller, with which the material web is intermittently transported from the loop accumulator to a particularly intermittently operating processing station Processing of the material web can be conveyed.
- a first, continuously operating conveying device in particular a first, motor-driven advancing unit with at least one motor-driven advancing roller, with which the web of material, which is in particular wound up on a bobbin, is continuously fed for compensation between continuous and intermittent conveying movement can be conveyed
- a second, intermittently operating conveying device arranged downstream of the loop accumulator, in particular a second, motor-
- the web of material can, as already indicated above, be a tubular web of film, in particular of plastic film, from which bags can be produced.
- the processing station can have a separating unit, with which a particular front section of the tubular web can be separated from the tubular web, in particular when the tubular web is at a standstill, to form a bag from the tubular web.
- the device can also have a control device which is designed and set up in such a way that it controls and/or regulates the negative pressure in the negative pressure chamber by appropriate control and/or regulation of the negative pressure device in such a way that the web tension of the material web during operation of the device in particular during the conveying movements of the material web, remains constant.
- a control device which is designed and set up in such a way that it controls and/or regulates the negative pressure in the negative pressure chamber by appropriate control and/or regulation of the negative pressure device in such a way that the web tension of the material web during operation of the device in particular during the conveying movements of the material web, remains constant.
- the device has a sensor with which the web tension can be measured, that the actual value of the web tension forms an input value of the control device, and that the vacuum is controlled by the control device by means of the vacuum device is adjusted in such a way that the actual value of the web tension corresponds to a predetermined target value.
- a method according to the invention with the features of claim 14 can preferably be designed to operate the device as described above.
- the material web is continuously unwound from a bobbin and continuously conveyed to the loop storage, in particular by means of one or the first, motor-driven advance unit with at least one motor-driven advance roller, that the material web is guided through the loop storage, which for ensures a balance between continuous and intermittent conveying movement, and that the material web, in particular by means of one or the second motor-driven advancing unit with at least one motor-driven advancing roller, is conveyed intermittently from the loop storage to the processing station, which preferably operates intermittently, at which the material web is processed.
- the negative pressure on the negative pressure side of the carriage is then preferably controlled and/or regulated in such a way that the web tension of the material web remains constant during the conveying movements of the material web.
- the actual web tension of the material web can in particular be measured continuously and/or at predetermined points in time, the vacuum on the vacuum side being controlled and/or regulated in such a way that changes in the actual web tension are counteracted.
- FIG. 1 shows an example of a tubular web, as can be used within the scope of the present invention and handled with the handling device according to the invention, and a bag, as can be produced from this tubular web, in an oblique view
- 2 shows an oblique view of a machine for manufacturing the bags from FIG. 1 and an embodiment of a handling device according to the invention as part of this machine
- FIG. 3 shows part of the machine from FIG. 2 in an enlarged representation, also in an oblique view
- Fig. 4 shows a vertical section through the part of the machine shown in Fig. 3 along the section line IV-IV in Fig. 3,
- FIG. 5 shows a view corresponding to FIG. 4, but in a different working state of the machine
- FIG. 6 shows a horizontal section through the part of the machine shown in FIG. 4 along the section line VI-VI in FIG. 5,
- FIG. 7 shows a horizontal section through the part of the machine shown in FIG. 4 along the section line VII-VII in FIG. 5,
- FIG. 8 is an enlarged perspective view of a detail from FIG. 2, also in a perspective view,
- Fig. 9 shows a vertical section through the part of the machine shown in Fig. 8 along section line IX-IX in Fig. 8,
- Fig. 10 shows a vertical section through the part of the machine shown in Fig. 8 along section line X-X in Fig. 8,
- FIG. 11 shows a section of the handling device according to the invention from FIG. 2 in an enlarged representation
- FIG. 12 shows a section through a loop storage device of the device according to the invention along the section plane XII-XII in FIG. 11, 13 shows a section through the loop storage device perpendicular to the section plane XII-XII.
- FIG. 2-13 shows a machine 10 with which bags 15 (in particular made of plastic) can be produced from a material web 14, in this case a tubular web.
- the handling device 11 for handling the web of material or tubular web 14 is part of the machine 10 and serves in particular to transport and process the tubular web 14 wound onto bobbins 13 as reliably as possible even at high machine speeds.
- it includes, among other things, a loop store 24 through which the tubular web 14 is passed. The details are described in more detail below.
- Fig. 1 the tubular web 14 and a partially finished bag 15 made from it without contents are first shown schematically in an enlarged representation. It can be seen that it is a so-called gusseted bag with gussets 16 arranged on opposite long sides, an opening 17 arranged on a transverse side for receiving products to be packed in the bag 15, such as diapers etc., and an opening 17 bag bottom 18 arranged on the opposite transverse side.
- handling device 11 could also be part of another machine, in particular also another machine for producing other packaging, and correspondingly could also handle material webs other than the tubular web 14 .
- each bag 15 has a (bottom) transverse weld seam 20, which was previously applied to the tubular web 14 at the appropriate point during the manufacturing process in order to connect opposite, superimposed surfaces or sides of the tubular web 14 to one another.
- the handling device 11 for handling the tubular web 14 also includes two bobbins 13, one of which serves as a replacement bobbin in a manner known per se when the material or the tubular web 14 on the bobbin 13 currently in use is exhausted or running low .
- a splicing station 21 is provided, in which the dwindling or expiring tubular track 14 is automatically connected to the new tubular track 14 of the replacement reel 13 in a known manner.
- tubular web 14 is guided along a tubular web buffer store 22, which in the present case is designed as a pendulum store known per se and which, among other things, ensures that the web tension remains as constant as possible even when the speed of the machine 10 etc. changes keep and ensure the smoothest possible operation of the bobbins 13.
- the web transport in the area upstream of the loop store 24 of the handling device 11 takes place continuously, in that a first, motor-driven advancing unit 23 (here comprising a motor-driven advancing roller 23a and a counter-roller 23b, between which the two the tubular track 14 is passed), moves the tubular track 14 from direction the bobbin 13 promotes or pulls under tension in the direction of the loop store 24, and indeed continuously.
- a first, motor-driven advancing unit 23 here comprising a motor-driven advancing roller 23a and a counter-roller 23b, between which the two the tubular track 14 is passed
- moves the tubular track 14 from direction the bobbin 13 promotes or pulls under tension in the direction of the loop store 24, and indeed continuously.
- the tubular web 14 Downstream of the loop store 24 the tubular web 14 is intermittently conveyed in the direction of a processing station 33 for processing the tubular web 14 .
- the loop accumulator 24 serves in particular to compensate for the initially (upstream) continuous and then (downstream) intermittent conveying movement of the tubular track 14 and to avoid excessive loads on the tubular track 14 .
- the intermittent transport downstream of the loop store 24 is effected by a second advancing unit 25, which is correspondingly arranged downstream of the same.
- This second advancing unit 25, which - like the first advancing unit 24 - is also operated cyclically or intermittently and is motor-driven, also has a motor-driven advancing roller 25a and a counter-roller 25b for this purpose, between which the tubular track 14 is guided.
- the second advancing unit 25 conveys the tubular web 14 to the processing station 33 of the machine 10.
- the weld seams 20 are then applied to the tubular web 14 in cycles and, furthermore, the tubular web 14 is separated into the individual bags 15, as will be explained in more detail later.
- the loop storage 24 is designed in a special way:
- the present case is designed as a (foil) loop box with a housing 50 in which a vacuum space 48 or a vacuum chamber is arranged.
- the loop accumulator 24 or the housing 50 has a suction air connection 49 (or alternatively several) in the area of a base, via which the vacuum space 48 can be subjected to a vacuum from a vacuum device 56 .
- the tubular track 14 is guided over an open side 50a of the housing 50 to form a (U-shaped) loop 51 of the tubular track 14 open to the open side 50a in a vertical plane through the loop store 24 or through its housing 50 .
- the negative pressure in the negative pressure chamber 48 provides a force on the loop 51 in the direction of the closed housing side 50b of the housing 50 of the loop storage device 24, which is opposite the open housing side 50a.
- the loop accumulator 24 ensures a corresponding compensation.
- the housing 50 of the loop storage device 24, which is open only on the open housing side 50a, but is otherwise closed, is embodied in the present case as a box with a substantially rectangular cross section, which is aligned in a vertical plane.
- the housing 50 could also be aligned in the horizontal plane or at an angle thereto and/or deviate from a cross-sectionally rectangular shape.
- Both the open housing side 50a and the closed housing side 50b of the loop storage device 24 are each arranged on a narrow side of the housing 50 .
- the housing 50 has an essentially cuboid interior space which is adjacent to the surroundings at the open narrow side 50a.
- a carriage 52 is arranged inside the housing 50 or the interior thereof, which has a deflection roller 53 which is rotatably mounted on it (in the present case by means of a ball bearing) and is designed for different widths of hose webs 14 .
- the tube sheet 24 is introduced into the housing 50 via the open housing side 50a.
- the hose track 24 is guided along the deflection roller 53 to form the (U-shaped) loop 51 (with a corresponding reversal of direction by 180°) which is open in the direction of the open housing side 50a.
- the hose track 14 is then guided out of the housing 50 again via the open housing side 50a.
- two deflection rollers 54a, 54b spaced apart from each other approximately in the width of the loop 51 are arranged outside of the loop store 24 or the housing 50 (in the same vertical plane as the housing 50) in a common horizontal plane.
- the tubular web 14 is guided along the deflection roller 54a, downstream of the loop store 24 or after exiting the same along the deflection roller 54b.
- the carriage 52 can be moved up and down in the vertical plane within the housing 50, entraining the hose track 14 or the loop 51 thereof, see the double arrow in Fig. 12 or 13.
- a suction or negative pressure opening 55 of the negative pressure device 56 which has a negative pressure or vacuum pump (not shown), is arranged below the carriage 52, specifically in the present case in the lower area of the negative pressure chamber 48.
- the vacuum chamber 48 located below the carriage 52 on a vacuum side 57 of the carriage 52 can be subjected to vacuum via the suction opening 55, and a corresponding force can be exerted on the carriage 52 in the direction of the closed housing side 50b or a downward force.
- this negative pressure ensures that there is a controlled or controllable (additional) force on the carriage 52 downwards or in the direction of the suction opening 55.
- the cross-sectional contour of the housing 50 is adapted to the carriage 52 (on its outer contour) in such a way that between the carriage 52 and the (upright) inner surface or inner side 59 of the housing 50 surrounding the carriage 52 there is only a narrow (here circumferential ) gap 58 is present.
- the inner surface 59 is part of one or more, in the present case, upright side or housing walls 60 of the loop storage 24 or the housing 50, which extend (in the present case running perpendicularly to them) between the open loop storage side 50a and the closed loop storage side 50b.
- the carriage 52 is guided laterally in the housing 50 by means of two upright longitudinal guides 66a and 66b which cooperate with the carriage 52.
- Each longitudinal guide 66a or 66b is assigned to one of two opposite, here parallel, upright side walls 60 and cooperates with one of two guide means 67a or 67b of the carriage 52 arranged on opposite sides of the carriage 52 .
- the longitudinal guides 66a and 66b can be designed as upright guide grooves 70a and 70b, in which the guide means 67a and 67b of the carriage 52, for example lateral projections 69a and 69b of the carriage adapted to the width of the guide grooves 70a and 70b 52, engage or in which they are guided (laterally) during the back and forth movements of the carriage 52.
- Such a loop store 24 also withstands high loads, such as can occur when using wide hose webs 14 and correspondingly heavy bobbins 13 .
- the aforementioned guidance of the carriage 52 in the housing 50 of the loop store 24 by the longitudinal guides 66a, 66b or the guide means 67a, 67b enables sufficiently reliable operation.
- the carriage 52 within the loop storage 24 moves automatically upwards or down.
- the current position of the carriage 52 in the housing 50 can be influenced, among other things, by using a control device (not shown) to determine the current (rotational) speed of the motor-driven first and/or second advancing unit 23 or 25 and thereby the conveying speed of the hose track 14 is set.
- the speed of the hose track 14 is regulated in such a way that the carriage 52 is located as centrally as possible within the housing 50 .
- a sensor device 61 is assigned to the loop storage device 24 for this purpose.
- this has an elongated magnetic position sensor 62 which is positioned outside of the housing 50 parallel to the housing 50 or parallel to the direction of movement of the carriage 52 .
- the magnet position sensor 62 interacts with a (permanent) magnet 63 arranged on the carriage 52 and can detect the current position of the (permanent) magnet 63 or correspondingly the carriage 52 and report it to a control device.
- the control device preferably controls and/or regulates the negative pressure on the negative pressure side 57 of the carriage 52 or in the negative pressure chamber 48 in such a way that the web tension of the tubular track 14 remains constant during the conveying movements of the tubular track 14 .
- the actual web tension of the tubular web 14 can preferably be measured in particular continuously and/or at predetermined times by means of a sensor for measuring such a web tension (well known to those skilled in the art), and the negative pressure in the negative pressure chamber 48 can be controlled and/or regulated in such a way that that changes in the actual web tension are counteracted.
- control device automatically adjusts the web tension of the tubular web 14 to a predetermined value by changing the negative pressure in the negative pressure chamber 48, in particular after measuring the current actual value of the web tension and depending on this actual value.
- the control device In order to prevent the carriage 52 from sinking so far down on its way down to the closed housing side 50b when the loop storage 24 is in operation that it covers the suction opening 55 and thus at least partially blocks it, in the lower area of the loop storage 24 (in the path of movement of the carriage 52) an (elastic) stop piece 64 of a stop 65 for the carriage 52 extending (also) transversely to the direction of movement of the carriage 52 is arranged.
- the stop 65 is attached or arranged on the closed housing side 50b and protrudes (vertically) into the housing 50.
- the stop piece 64 is placed above the suction opening 55, so that the carriage 52 would also hit the stop piece 64 above the suction opening 55 and would come to rest at a position above the suction port 55.
- the stop 65 is a (substantially cylindrical) pin.
- the entire stop 65 including the stop piece 64 consists of elastic material, in this case rubber.
- the stop 65 can also be designed in a different form and/or can be arranged at a different point in the housing 50 . It is important that on the one hand it ensures that the movement of the carriage 52 ends as far above the suction opening 55 as possible. On the other hand, that it impedes the build-up of the negative pressure as little as possible, i.e. has the smallest possible dimensions.
- the carriage 52 has a cavity 68 which is open in the direction of the vacuum space 48 or in the direction of the closed housing side 50b of the housing 50 .
- This open cavity 68 or the cap-shaped end piece 69 allows a longer travel path until the end piece 69 hits the stop 65 in comparison to a straight end piece, for example.
- the tubular web 14 Downstream of the loop store 24, in the region of the processing station 33, the tubular web 14 is first deflected by the rollers 25a, 25b from a previously horizontal conveying plane to a vertical conveying plane, with a front section 27 of the tubular web 14, which later forms the bag 15 that will be separated, being successively moved in cycles is brought into a processing position immediately downstream of the rollers 25a, 25b, in which it is directed downwards or hung downwards, so that this front section 27 is accordingly also arranged in the vertical.
- the transverse weld seam 20 forming the bottom weld of the bag 15 of an im Working cycle of the bag 15 following the bag 15 to be separated is applied to the tubular web 14 or of a section 27 forming the following bag 15.
- This application is carried out by two welding elements 28a, 28b of a welding unit 29 which are arranged on opposite sides of the tubular track 14 and are each driven by motor drives 31 and move back and forth in cycles (here horizontally), each of which can be moved from a non-welding position, cf. Fig. 4, in which they are each at a distance from the tubular sheet 14, are moved into a welding position, see FIG.
- the transverse weld seam 20 is applied in a region of the tubular web 14 directly upstream of an imaginary dividing line, along which the section 27 forming the bag 15 currently to be produced is basically simultaneously separated.
- the transverse weld seam 20 is therefore applied to the section 27 or bag 15 to be separated in the subsequent work cycle. Separation takes place by means of a separating element 30, in this case a separating knife, which moves back and forth in cycles together with the welding element 28a.
- the conveying movement of the tubular web 14 to the processing station 33 takes place with the assistance of a position sensor 41, in this case a print mark sensor, which detects the current position of the tubular web 14 using position or print marks 26 applied to the tubular web 14.
- the conveying movement is controlled in such a way that the tubular web 14 is conveyed in the direction of the processing station 33 by the length of a bag 15 per work, production or machine cycle, or in the present case is pulled forward by means of the second advancing unit 25 .
- the section 27 of the tubular web 14 is held in the processing position.
- a discharge conveyor 32 which holds the bag 15 in an area below the imaginary dividing line and which, after it has been separated, transports it away, in the present case in a vertical conveying plane transverse to the (horizontal) conveying plane along which the tubular web 14 is conveyed to the processing station 33.
- the (motor-driven) discharge conveyor 32 is designed as a belt conveyor with opposing, revolving conveyor belts 34a, 34b, between which the respective bag 15 is clamped in the area mentioned below the imaginary dividing line in order to keep the bag 15 free during the To keep separating and then to be able to carry it away for removal or transport.
- the respective bag 15 is then suspended in the vertical conveying plane to a compensating conveyor 35, which is also designed as a belt conveyor with opposite conveyor belts 36a, 36b transported, which then takes over the respective bag 15, conveys it further along its conveying section - also in one or the same vertical plane - and transfers it to a subsequent (motor-driven) twist conveyor 37, which rotates the opposite, circulating conveyor section, in particular along the conveying section, in each case about its respective longitudinal axis or twisted conveyor belts 38a, 38b (vertically aligned at the entrance of the twist conveyor 37, horizontally aligned at the exit of the twist conveyor 37), between which the bag 15 is clamped during transport along the conveying path of the twist conveyor 37.
- a compensating conveyor 35 which is also designed as a belt conveyor with opposite conveyor belts 36a, 36b transported, which then takes over the respective bag 15, conveys it further along its conveying section - also in one or the same vertical plane - and transfers it to a subsequent (motor-driven) twist conveyor 37, which rotate
- the (motor-driven) compensating conveyor 35 is used to compensate for any fluctuations in conveying speed between the discharge conveyor 32 and the twist conveyor 37 by accelerating and/or decelerating movements, which take place in addition to the regular clocked acceleration and/or decelerating movements.
- the compensating conveyor 35 or its speed is suitably controlled.
- the discharge conveyor 32, the compensating conveyor 35 and the twist conveyor 37 can be controlled in particular in such a way that successive bags 15 in a conveying sequence are at the same distance from one another in the conveying direction, while they are being conveyed by the twist conveyor 37 along its conveying path.
- twist conveyor 37 changes the plane of conveyance along which the bag 15 is conveyed as the bag 15 is conveyed along the conveying path thereof.
- the bag 15 is transferred to the twist conveyor 37 in a vertical conveying plane, whereby the bag 15, however, at least a larger part thereof, then leaves the twist conveyor 37 in a horizontal conveying plane, cf. Fig. 8.
- This change in the conveying plane from the vertical to the horizontal is brought about by the bag 15 being guided by the twisted or twisted conveyor belts 38a, 38b along at least one guide profile 39, in this case a guide plate, during its movement along the conveying path of the twist conveyor 37.
- the guide profile 39 has a support section 45 that widens continuously (in the transverse direction to the vertical) along the conveying path and runs transversely to the vertical is converted from a vertical orientation to a horizontal orientation, the remaining part of the bag 15, which is not clamped and initially hangs downwards, is thereby guided in a sliding manner along the widening support section 45 or is supported by it, as a result of which - an ever larger or wider section of the Bag 15 - rests slidably there and is accordingly aligned in the transverse direction to the vertical or is erected overall in the horizontal.
- the aforementioned, widening support section 45 initially runs somewhat inclined to the horizontal at the entrance of the twist conveyor 37 and finally horizontally at the exit of the twist conveyor 37 .
- the above-mentioned clamping effect between the circulating conveyor belts 38a, 38b of the twist conveyor 37 is also supported by a guide bar 44b arranged laterally next to the conveyor belt 38b (see Fig. 9) and engaging in a circumferential groove 43b of the conveyor belt 38b, presses against the opposite conveyor belt 38a (one-sided clamping effect).
- a guide strip 44a assigned to the other conveyor belt 38a can be provided as an alternative or in addition, which in turn engages in a circumferential groove 43a of the conveyor belt 38a and correspondingly presses the conveyor belt 38a against the conveyor belt 38b (two-sided clamping effect ).
- the respective bag 15 is then transferred to a suction conveyor 40 with a horizontal conveying plane for further handling.
- the bags 15 are filled with the products for which they are intended (not shown) via the bag opening 17, and then closed, for example by applying a further transverse weld seam in the area of the bag opening 17.
- a perforation station 42 should also be mentioned, which is arranged between the second tubular web intermediate store 24 and the processing station 33 and which introduces the tear-open perforations 19 running transversely to the longitudinal extent of the tubular web 14 .
Landscapes
- Advancing Webs (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021133985.5A DE102021133985A1 (de) | 2021-12-21 | 2021-12-21 | Verfahren und Vorrichtung zum Handhaben einer Materialbahn |
| PCT/EP2022/086312 WO2023117743A1 (de) | 2021-12-21 | 2022-12-16 | Verfahren und vorrichtung zum handhaben einer materialbahn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4452803A1 true EP4452803A1 (de) | 2024-10-30 |
Family
ID=84901697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22840048.7A Pending EP4452803A1 (de) | 2021-12-21 | 2022-12-16 | Verfahren und vorrichtung zum handhaben einer materialbahn |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4452803A1 (de) |
| DE (1) | DE102021133985A1 (de) |
| WO (1) | WO2023117743A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202200018891A1 (it) * | 2022-09-15 | 2024-03-15 | P I T S R L | Apparecchiatura per il controllo dell’alimentazione di materiale in nastro a macchine automatiche |
| CN220886323U (zh) * | 2023-09-19 | 2024-05-03 | 江苏迈征智能装备有限公司 | 一种料带尾料暂存机构 |
| CN118205261A (zh) * | 2024-04-02 | 2024-06-18 | 东莞市和信包装制品有限公司 | 袋料切割装置及袋体的制造方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4787544A (en) * | 1986-05-05 | 1988-11-29 | Jones Charles R | Dancer roller |
| DE10018497C2 (de) * | 2000-04-14 | 2002-11-14 | Melzer Maschinenbau Gmbh | Verfahren und Vorrichtung zum Fördern einer Materialbahn |
| DE102004017763A1 (de) | 2004-04-10 | 2005-11-03 | Ingenieurgesellschaft Röhrig GmbH | Verfahren und Vorrichtung zur Herstellung eines Folienbeutels |
| DE102018003793A1 (de) | 2018-05-03 | 2019-11-07 | Focke & Co. (Gmbh & Co. Kg) | Verfahren und Vorrichtung zum Handhaben einer Aufreißstreifenbahn |
| EP3569531B1 (de) * | 2018-05-03 | 2021-09-15 | Focke & Co. (GmbH & Co. KG) | Verfahren und vorrichtung zum handhaben einer aufreissstreifenbahn |
-
2021
- 2021-12-21 DE DE102021133985.5A patent/DE102021133985A1/de active Pending
-
2022
- 2022-12-16 WO PCT/EP2022/086312 patent/WO2023117743A1/de not_active Ceased
- 2022-12-16 EP EP22840048.7A patent/EP4452803A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021133985A1 (de) | 2023-06-22 |
| WO2023117743A1 (de) | 2023-06-29 |
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