EP4155217A2 - Ejector for strapping machine - Google Patents
Ejector for strapping machine Download PDFInfo
- Publication number
- EP4155217A2 EP4155217A2 EP22197696.2A EP22197696A EP4155217A2 EP 4155217 A2 EP4155217 A2 EP 4155217A2 EP 22197696 A EP22197696 A EP 22197696A EP 4155217 A2 EP4155217 A2 EP 4155217A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tape
- channel
- guide frame
- ejector
- flat
- 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
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 210000003041 ligament Anatomy 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010137 moulding (plastic) Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/185—Details of tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
- B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
- B65B13/10—Carriers travelling completely around the articles while holding the free end of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/02—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes
- B65B13/04—Applying and securing binding material around articles or groups of articles, e.g. using strings, wires, strips, bands or tapes with means for guiding the binding material around the articles prior to severing from supply
- B65B13/06—Stationary ducts or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/22—Means for controlling tension of binding means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B13/00—Bundling articles
- B65B13/18—Details of, or auxiliary devices used in, bundling machines or bundling tools
- B65B13/24—Securing ends of binding material
- B65B13/32—Securing ends of binding material by welding, soldering, or heat-sealing; by applying adhesive
Definitions
- the invention relates to a device for strapping objects using a flat strap, with at least one strap guide frame, a cover frame and an ejector, the strap guide frame having a flat strap channel open on a narrow side, the narrow side of which ends on a first side face of the strap guide frame.
- cover frame is displaceable relative to the tape guide frame between a closed position and an open position, so that in the closed position it rests against the first side surface of the tape guide frame and covers the narrow side of the tape channel and is spaced from the narrow side of the tape channel in the open position, and wherein the ejector is attached to a fastener such that it protrudes into the tape channel from a second side surface of the tape guide frame, the second side surface being opposite the first side surface of the tape guide frame.
- Such devices are commonly called strapping machines.
- the European patent EP 2 051 909 B1 the applicant discloses such a strapping machine with a cover element that can be displaced along the first side surface.
- the ejector here is a pin that can be pushed into the sliver channel.
- the ejector In the DE 33 46 598 A1 the ejector is designed as a barb which engages from above in a slot severing the tape guide frame in the region of the tape channel.
- the ejector is designed as a pivoting arm.
- the print DE 10 2018 127 052 A1 describes a pivoted ejector that moves into the sliver channel when a cover member clears the sliver channel.
- a strapping machine with an ejector which, as described above, protrudes from the second side surface of the strap guide frame into the strap channel is out the U.S. 6,073,425 A known.
- the fastening element consists of a fastening pin and a fastening plate screwed to it, which carries an ejector pin which can be pressed into the ligament channel through through-holes and pushes the ligament out of the ligament channel.
- This construction is complex due to the variety of parts.
- the thin pin that can be moved into the ligament channel is not very stable and can easily deform.
- the object of the invention is to further develop a strapping machine with an ejector that can be moved into the strap channel from the closed side in such a way that the ejector can be manufactured simply and inexpensively and is reliable. Furthermore, the stability of the tape guide frame should be preserved.
- the ejector is a flat component with two legs at an angle to one another, the free end of the first leg being attached to the fastening element and the free end of the second leg protruding into a flat opening with little play , which protrudes through the tape guide frame, extends transversely to the tape channel and whose height is greater than the height of the tape channel transverse to the plane of the tape.
- the ejector is a flat, L-shaped angle part, the two legs of which are preferably connected at right angles at their ends in a corner region.
- the L-shaped ejector can, for example, be manufactured as a stamped part from sheet steel.
- the free end of the first leg of the ejector is attached to the fastener.
- This first leg projects at a distance from the second side surface of the tape guide frame towards the flat opening in the tape guide frame.
- the second leg of the L-shaped flat component extends parallel to the direction of displacement in which the tape guide frame and the cover frame can be displaced relative to one another. The free end of the second leg protrudes into said flat opening with little play.
- the free end of the second leg is pushed into the flat opening.
- the flat opening protrudes through the tape guide frame and extends transversely to the tape channel.
- the height of the shallow opening, and consequently also the height of the free end of the second leg is greater than the height of the ligament channel transverse to the plane of the ligament. This means that the free end of the second leg protrudes above and below the thickness of the strap in the strap channel. This ensures that the strap is safely pushed out of the strap guide channel.
- the ejector designed as a flat angle part has a greater rigidity than the round ejector pin known from the prior art, the diameter of which is limited to the height of the sliver channel. Both the fastener and the L-shaped angle member forming the ejector itself are extremely inexpensive to manufacture and easy to assemble.
- the tape guide frame may have opposing projections on either side of the tape channel in which the flat opening is located.
- the aim is to produce the tape guide frame as light and material-saving as possible.
- the tape guide frame is usually made of a plastic that is easy to process, has the necessary strength to guide the tape and allows the tape to be transported through the tape channel with little friction. Since the flat opening extends transversely to the plane of the sliver channel and is therefore greater in height than the sliver channel, it is advantageous to equip the sling guide frame with two opposing thickenings or projections in the area of the flat opening. This ensures that the sliver guide frame has the required strength despite the flat opening running transversely to the sliver channel.
- the tape guide frame can be composed of straight elements and corner elements, each straight element having a straight section of tie channel and each corner member comprises a curved section of tie channel and wherein each corner member has a flat opening disposed therein.
- the tape guide frame is an essentially closed frame that is only interrupted in the area of the tape drive and the unit for closing the tape loop that is formed.
- the size of the strap guide frame can vary depending on the type of strapping machine. If the belt guide frame consists of straight elements and corner elements, the straight elements can be produced as extruded profiles of any length.
- the corner elements which have the protruding flat openings and optionally the opposite projections in the area of the flat openings, can be manufactured using the injection molding process. Depending on the design of the strapping machine, the straight, extruded elements can be cut to length so that strap guide frames of different dimensions can be produced with uniform components.
- a tape drive can be set up to introduce the tape into the tape channel in a feed direction, the tape channel having a continuously decreasing height in the feed direction in front of the flat opening, so that it opens into the flat opening with the minimum height and in the feed direction widened in a funnel shape behind the opening so that it opens into the flat opening at its maximum height.
- the sliver channel is funnel-shaped in front of the flat opening and behind the flat opening in the supply direction. Before the shallow opening, it narrows from the usual height to a reduced height. Behind the flat opening, it has a height that is greater than the usual height, and the height reduces to the usual value. It should be noted that the height is measured perpendicular to the plane of the strap inserted into the strap channel.
- the fastening element can be a fastening pin, the foot portion of which is connected to the cover frame.
- a screw connection or a rivet connection can be used to attach the foot of the mounting stud to the deck frame.
- the head portion of the attachment pin may have a slot for receiving the free end of the first leg of the ejector.
- the head section of the fastening pin and the free end of the first leg of the ejector can have openings which are aligned with one another and through which a fastening pin projects.
- the slot for accommodating the free end of the leg can be made with a predetermined depth in the material of the attachment pin, e.g. be sawn or milled.
- the narrow edge of the first leg of the ejector then rests essentially flat against the bottom of the slot, so that the ejector is fixed by the fastening pin essentially non-pivotingly on the fastening pin.
- either the tape guide frame or the cover frame may be stationary. If the tape spool is stationary and the cover frame is transverse to the tape spool, i. H. is slidable away from the tape guide frame, the tape located in the tape channel of the tape guide frame is pushed out through the opening narrow side of the tape channel by the ejectors attached to the cover frame. In the open position of the cover frame, the strap is completely outside the strap channel.
- the tape loop produced in this way can be pulled together by the tape drive until it surrounds the object to be strapped with tension. The ends of the strap loop can then be welded together.
- the cover frame is arranged in a stationary manner on the strapping machine and the strap guide frame is moved, the strap remains in place when the strap guide frame is moved, the strap channel of the strap guide frame being pushed over the ejector and the strap channel consequently being pulled away from the strap. Again it's in the open position possible to contract and close the band loop formed.
- the strapping machine 1 shown is used for strapping objects 7 with a strap 2 which is drawn off from a supply roll 3 by a pull-in device 4 and fed to a tape magazine 5 . From there, the strap is fed by a strap conveyor device 6 through a tensioning device 8 to a strap channel 15 in a strap guide frame 9, so that the strap 2 forms a loop. The strapping band 2 is then pulled back by the drive of the band conveyor device 6 so that the band loop lies snugly against the object 7 . Now the clamping device 8 is activated, so that the belt loop with a predetermined high Clamping force around the object 7 is pulled.
- the belt conveyor device 6 and the tensioning device 8 together form the belt drive. They can also be combined to form a drive device.
- the tensioned loop is then cut off from the tape supply.
- the start of the loop is connected to the end of the loop by means of a closing unit 10 .
- the closure unit 10 consists, for example, of a welding device which welds the two ends of the tape loop formed to one another.
- the closure unit 10 welds the foil-like plastic material from which the strapping band 2 is made.
- a conveyor for transporting the article 7 into and out of the strapping zone within the strap guide frame 9 is in figure 1 not shown.
- FIG 1 only an outer protective frame of the tape guide frame 9 can be seen.
- a supporting frame 11 (see 2 ), to which elements 12, 13 are fastened, which form the tape channel 15 of the tape guide frame 9, in which the strapping tape 2 is guided.
- locking devices for the sliver channel 15 and ejectors 14 are arranged on the supporting frame 11 .
- a support frame 11 for the strapping machine described here is in figure 2 shown in side view. It is made from sheet steel by folding and laser cutting. Such a steel sheet typically has a thickness of 3 to 6 mm.
- Corner elements 12 and straight elements 13 are fastened to the support frame 11 .
- An enlarged view of the corner element 12 is in FIG figure 3 shown.
- the corner element 12 has a curved section of the band channel 15 .
- Each straight element 13 has a straight section of the band channel 15 .
- the figure 3 shows a three-dimensional view of a corner element 12 and a cooperating ejector 14.
- the corner element 12 is a curved plastic molding and has a curved portion of the Band channel 15 on.
- the inside figure 3 The beginning of the curved section of the ligament channel 15 visible at the top left runs in the shape of a funnel, i.e. the mouth of the section has a large height on the front side of the corner element 12 in the direction perpendicular to the plane of the belt, which continuously decreases until it reaches the normal height of the curved ligament channel 15 .
- two thickenings or projections 16, 17 can be seen, in which a flat opening 18 is received, which serves to receive the ejector 14.
- the area of the corner element 12 with the two projections 16, 17 is enlarged in figure 4 shown.
- the projections 16, 17 are simple accumulations of material of the plastic material of the corner element 12.
- the feeding direction for the tape through the tape channel is in figure 3 and 4 left to right.
- the sliver channel 15 has a funnel-shaped, narrowing course, ie its height perpendicular to the plane of the sliver reduces toward the opening into the flat opening 18 .
- the ligament channel On the other side of the shallow opening 18, the ligament channel has a large height, which is greater than the normal height of the ligament channel. Consequently, the band channel forms a kind of funnel for the strapping band 2 immediately behind the flat opening 18.
- FIGs 5 and 6 show sectional three-dimensional representations through the corner element 12 of the tape guide frame 9.
- the closed position is shown.
- the tape guide frame 9 is assigned a cover frame 19 which covers the side face of the tape guide frame 9 with the open, narrow side of the tape channel 15 .
- the closed position is shown, in which the side surface of the tape guide frame 9 rests against a leg of the cover frame 19.
- the open position is shown in which the tape guide frame 9 is moved away from the cover frame 19 with the tape channel.
- the ejector 14 moves into the flat opening 18.
- the ejector 14 is attached to the head portion of an elongate, peg-shaped fastener 21, whose foot section is fixed to the cover frame 19 by a screw 22 .
- the ejector 14 is formed as an L-shaped flat angle part. It has a first leg 23 which is fastened to the fastening element 21 .
- the head section of the fastening element 21 has a slot into which the end of the first leg 23 is inserted.
- a mounting pin 25 extends through aligned openings in the head portion of the fastener 21 on either side of the slot and the first leg 23 of the ejector 14.
- the first leg 23 extends in a direction transverse to the plane of the tape to the area of the flat opening 18 in the tape guide frame .
- the second leg 24 running at right angles to the first leg 23 extends at a distance from the fastening element 21 into the flat opening 18 of the corner element 12 . It is particularly in figure 5 it can be seen that the height of the free end of the first leg 23, ie the extension perpendicular to the plane of the tape or the tape channel in the region of the free end of the second leg 24 of the ejector 14 is considerably greater than the height of the tape channel.
- the shallow opening 18 for receiving the ejector 14 thus extends beyond the belt channel on either side in the direction perpendicular to the plane of the belt.
Abstract
Die Erfindung betrifft eine Vorrichtung zum Umreifen von Gegenständen mit einem flachen Band, umfassend einen Bandführungsrahmen, einen Deckrahmen und einen Ausstoßer. der Bandführungsrahmen hat einen flachen, an einer schmalen Seite offenen Bandkanal und der Deckrahmen ist relativ zum Bandführungsrahmen zwischen einer Schließstellung und einer Öffnungsstellung verschiebbar. In der Schließstellung deckt er offene Schmale Seite des Bandkanals ab und und in der Öffnungsstellung weist er einen Abstand hierzu auf. Der Ausstoßer ragt von einer der offenen schmalen Seite gegenüberliegenden zweiten Seitenfläche aus in den Bandkanal.Um eine stabile und kostengünstige Bauweise zu verwirklichen, ist der Ausstoßer (14) ein flaches Bauelement mit zwei einen Winkel zueinander aufweisenden Schenkeln (23, 24), wobei das freie Ende des ersten Schenkels (23) an dem Befestigungselement (21) befestigt ist und das freie Ende des zweiten Schenkels (24) mit geringem Spiel in eine flache Öffnung (18) hinein ragt, die den Bandführungsrahmen (9) durchragt, sich quer zum Bandkanal (15) erstreckt und deren Höhe größer als die Höhe des Bandkanals (15) quer zur Ebene des Bandes ist.The invention relates to a device for strapping objects with a flat strap, comprising a strap guide frame, a cover frame and an ejector. the tape guide frame has a flat tape channel open on one narrow side, and the cover frame is slidable relative to the tape guide frame between a closed position and an open position. In the closed position it covers the open narrow side of the sliver channel and in the open position it is at a distance therefrom. The ejector protrudes into the sliver channel from a second side surface opposite the open narrow side. In order to achieve a stable and cost-effective construction, the ejector (14) is a flat component with two legs (23, 24) at an angle to one another, the free end of the first leg (23) is attached to the fastening element (21) and the free end of the second leg (24) protrudes with little play into a flat opening (18) which protrudes through the tape guide frame (9), transverse to the Tape channel (15) extends and whose height is greater than the height of the tape channel (15) transverse to the plane of the tape.
Description
Die Erfindung betrifft eine Vorrichtung zum Umreifen von Gegenständen mittels eines flachen Bandes, mit mindestens einem Bandführungsrahmen, einem Deckrahmen und einem Ausstoßer, wobei der Bandführungsrahmen einen flachen, an einer schmalen Seite offenen Bandkanal aufweist, dessen schmale Seite an einer ersten Seitenfläche des Bandführungsrahmens mündet, wobei der Deckrahmen relativ zum Bandführungsrahmen zwischen einer Schließstellung und einer Öffnungsstellung verschiebbar ist, so dass er in der Schließstellung gegen die erste Seitenfläche des Bandführungsrahmens anliegt und die schmale Seite des Bandkanals abdeckt und in der Öffnungsstellung einen Abstand zur schmalen Seite des Bandkanals aufweist, und wobei der Ausstoßer an einem Befestigungselement derart befestigt ist, dass er von einer zweiten Seitenfläche des Bandführungsrahmens aus in den Bandkanal ragt, wobei die zweite Seitenfläche der ersten Seitenfläche des Bandführungsrahmens gegenüberliegt.The invention relates to a device for strapping objects using a flat strap, with at least one strap guide frame, a cover frame and an ejector, the strap guide frame having a flat strap channel open on a narrow side, the narrow side of which ends on a first side face of the strap guide frame. wherein the cover frame is displaceable relative to the tape guide frame between a closed position and an open position, so that in the closed position it rests against the first side surface of the tape guide frame and covers the narrow side of the tape channel and is spaced from the narrow side of the tape channel in the open position, and wherein the ejector is attached to a fastener such that it protrudes into the tape channel from a second side surface of the tape guide frame, the second side surface being opposite the first side surface of the tape guide frame.
Derartige Vorrichtungen werden üblicherweise Umreifungsmaschine genannt. Das europäische Patent
Aufgabe der Erfindung ist es, eine Umreifungsmaschine mit einem von der geschlossenen Seite in den Bandkanal hinein bewegbaren Ausstoßer derart weiterzubilden, dass der Ausstoßer einfach und kostengünstig herzustellen sowie zuverlässig ist. Ferner soll die Stabilität des Bandführungsrahmens bewahrt bleiben.The object of the invention is to further develop a strapping machine with an ejector that can be moved into the strap channel from the closed side in such a way that the ejector can be manufactured simply and inexpensively and is reliable. Furthermore, the stability of the tape guide frame should be preserved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Ausstoßer ein flaches Bauelement mit zwei einen Winkel zueinander aufweisenden Schenkeln ist, wobei das freie Ende des ersten Schenkels an dem Befestigungselement befestigt ist und das freie Ende des zweiten Schenkels mit geringem Spiel in eine flache Öffnung hinein ragt, die den Bandführungsrahmen durchragt, sich quer zum Bandkanal erstreckt und deren Höhe größer als die Höhe des Bandkanals quer zur Ebene des Bandes ist.This object is achieved according to the invention in that the ejector is a flat component with two legs at an angle to one another, the free end of the first leg being attached to the fastening element and the free end of the second leg protruding into a flat opening with little play , which protrudes through the tape guide frame, extends transversely to the tape channel and whose height is greater than the height of the tape channel transverse to the plane of the tape.
Mit anderen Worten ist der Ausstoßer ein flaches, L-förmiges Winkelteil, dessen zwei Schenkel vorzugsweise in einem Eckbereich im rechten Winkel mit ihren Enden aneinander verbunden sind. Der L-förmige Ausstoßer kann beispielsweise als Stanzteil aus einem Stahlblech gefertigt werden. Das freie Ende des ersten Schenkels des Ausstoßers ist an dem Befestigungselement befestigt. Dieser erste Schenkel ragt im Abstand von der zweiten Seitenfläche des Bandführungsrahmens zu der flachen Öffnung in den Bandführungsrahmen hin. Der zweite Schenkel des L-förmigen flachen Bauelements erstreckt sich parallel zur Verschieberichtung, in der Bandführungsrahmen und Deckrahmen relativ zueinander verschiebbar sind. Das freie Ende des zweiten Schenkels ragt mit geringem Spiel in die genannte flache Öffnung hinein. Wenn der Bandführungsrahmen relativ zum Deckrahmen verschoben wird, wird das freie Ende des zweiten Schenkels in die flache Öffnung hinein geschoben. Die flache Öffnung durchragt den Bandführungsrahmen und erstreckt sich quer zum Bandkanal. Die Höhe der flachen Öffnung und folglich auch die Höhe des freien Endes des zweiten Schenkels ist größer als die Höhe des Bandkanals quer zur Ebene des Bandes. Das heißt, dass das freie Ende des zweiten Schenkels oben und unten über die Dicke des Bandes in dem Bandkanal hinausragt. Auf diese Weise ist sichergestellt, dass das Band sicher aus dem Bandführungskanal geschoben wird.In other words, the ejector is a flat, L-shaped angle part, the two legs of which are preferably connected at right angles at their ends in a corner region. The L-shaped ejector can, for example, be manufactured as a stamped part from sheet steel. The free end of the first leg of the ejector is attached to the fastener. This first leg projects at a distance from the second side surface of the tape guide frame towards the flat opening in the tape guide frame. The second leg of the L-shaped flat component extends parallel to the direction of displacement in which the tape guide frame and the cover frame can be displaced relative to one another. The free end of the second leg protrudes into said flat opening with little play. If the tape guide frame relative to the Cover frame is moved, the free end of the second leg is pushed into the flat opening. The flat opening protrudes through the tape guide frame and extends transversely to the tape channel. The height of the shallow opening, and consequently also the height of the free end of the second leg, is greater than the height of the ligament channel transverse to the plane of the ligament. This means that the free end of the second leg protrudes above and below the thickness of the strap in the strap channel. This ensures that the strap is safely pushed out of the strap guide channel.
Der als flaches Winkelteil ausgebildete Ausstoßer weist eine größere Steifigkeit als der aus dem Stand der Technik bekannte runde Ausstoß-Stift auf, dessen Durchmesser auf die Höhe des Bandkanals begrenzt ist. Sowohl das Befestigungselement als auch das L-förmige Winkelelement, welches den Ausstoßer selbst bildet, sind äußerst kostengünstig in der Herstellung und leicht zu montieren.The ejector designed as a flat angle part has a greater rigidity than the round ejector pin known from the prior art, the diameter of which is limited to the height of the sliver channel. Both the fastener and the L-shaped angle member forming the ejector itself are extremely inexpensive to manufacture and easy to assemble.
In der Praxis kann der Bandführungsrahmen auf beiden Seiten des Bandkanals einander gegenüberliegende Vorsprünge aufweisen, in denen die flache Öffnung angeordnet ist. Grundsätzlich wird angestrebt, den Bandführungsrahmen so leicht und materialsparend wie möglich herzustellen. Der Bandführungsrahmen wird üblicherweise aus einem Kunststoff gefertigt, der leicht zu verarbeiten ist, für die Führung des Bandes die erforderliche Festigkeit aufweist und es ermöglicht, das Band mit einer geringen Reibung durch den Bandkanal zu transportieren. Da sich die flache Öffnung quer zur Ebene des Bandkanals erstreckt und somit eine größere Höhe aufweist, als der Bandkanal, ist es vorteilhaft, den Bandführungsrahmen im Bereich der flachen Öffnung mit zwei einander gegenüberliegenden Verdickungen oder Vorsprüngen auszustatten. Hierdurch ist sichergestellt, dass der Bandführungsrahmen trotz der quer zum Bandkanal verlaufenen flachen Öffnung die erforderliche Festigkeit aufweist.In practice, the tape guide frame may have opposing projections on either side of the tape channel in which the flat opening is located. Basically, the aim is to produce the tape guide frame as light and material-saving as possible. The tape guide frame is usually made of a plastic that is easy to process, has the necessary strength to guide the tape and allows the tape to be transported through the tape channel with little friction. Since the flat opening extends transversely to the plane of the sliver channel and is therefore greater in height than the sliver channel, it is advantageous to equip the sling guide frame with two opposing thickenings or projections in the area of the flat opening. This ensures that the sliver guide frame has the required strength despite the flat opening running transversely to the sliver channel.
In der Praxis kann der Bandführungsrahmen aus geraden Elementen und Eckelementen zusammengesetzt sein, wobei jedes gerade Element einen geraden Abschnitt des Bandkanals aufweist und jedes Eckelement einen gebogenen Abschnitt des Bandkanals aufweist und wobei in jedem Eckelement eine flache Öffnung angeordnet ist. Diese Ausgestaltung des Bandführungsrahmens ermöglicht es, Standard-Bauelemente zu verwenden. Der Bandführungsrahmen ist ein im Wesentlichen geschlossener Rahmen, der lediglich im Bereich des Bandantriebs und des Aggregats zum Verschließen der gebildeten Bandschlaufe unterbrochen ist. Die Größe des Bandführungsrahmens kann je nach Bauart der Umreifungsmaschine variieren. Wenn der Bandführungsrahmen aus geraden Elementen und Eckelementen besteht, können die geraden Elemente als Strangpressprofile in beliebiger Länge hergestellt werden. Die Eckelemente, welche die hindurchragenden flachen Öffnungen und gegebenenfalls die einander gegenüberliegenden Vorsprünge im Bereich der flachen Öffnungen aufweisen, können im Spritzgießverfahren gefertigt sein. Die stranggepressten geraden Elemente können je nach Bauform der Umreifungsmaschine entsprechend abgelängt werden, so dass Bandführungsrahmen unterschiedlicher Abmessungen mit einheitlichen Bauelementen hergestellt werden können.In practice, the tape guide frame can be composed of straight elements and corner elements, each straight element having a straight section of tie channel and each corner member comprises a curved section of tie channel and wherein each corner member has a flat opening disposed therein. This design of the tape guide frame makes it possible to use standard components. The tape guide frame is an essentially closed frame that is only interrupted in the area of the tape drive and the unit for closing the tape loop that is formed. The size of the strap guide frame can vary depending on the type of strapping machine. If the belt guide frame consists of straight elements and corner elements, the straight elements can be produced as extruded profiles of any length. The corner elements, which have the protruding flat openings and optionally the opposite projections in the area of the flat openings, can be manufactured using the injection molding process. Depending on the design of the strapping machine, the straight, extruded elements can be cut to length so that strap guide frames of different dimensions can be produced with uniform components.
In der Praxis kann ein Bandantrieb dazu eingerichtet sein, das Band in einer Zufuhrrichtung in den Bandkanal einzuführen, wobei der Bandkanal in Zufuhrrichtung vor der flachen Öffnung eine kontinuierlich abnehmende Höhe aufweist, so dass er mit der minimalen Höhe in die flache Öffnung mündet und in Zufuhrrichtung hinter der Öffnung trichterförmig aufgeweitet ist, so dass er mit der maximalen Höhe in die flache Öffnung mündet.In practice, a tape drive can be set up to introduce the tape into the tape channel in a feed direction, the tape channel having a continuously decreasing height in the feed direction in front of the flat opening, so that it opens into the flat opening with the minimum height and in the feed direction widened in a funnel shape behind the opening so that it opens into the flat opening at its maximum height.
Mit anderen Worten ist in Zufuhrrichtung der Bandkanal vor der flachen Öffnung und hinter der flachen Öffnung trichterförmig ausgebildet. Vor der flachen Öffnung verengt er sich von der üblichen Höhe zu einer reduzierten Höhe. Hinter der flachen Öffnung weist er eine Höhe auf, die größer als die übliche Höhe ist, und die Höhe reduziert sich auf den üblichen Wert. Es ist anzumerken, dass die Höhe senkrecht zur Ebene des in den Bandkanal eingeführten Umreifungsbandes gemessen wird.In other words, the sliver channel is funnel-shaped in front of the flat opening and behind the flat opening in the supply direction. Before the shallow opening, it narrows from the usual height to a reduced height. Behind the flat opening, it has a height that is greater than the usual height, and the height reduces to the usual value. It should be noted that the height is measured perpendicular to the plane of the strap inserted into the strap channel.
In der Praxis kann das Befestigungselement ein Befestigungszapfen sein, dessen Fußabschnitt mit dem Deckrahmen verbunden ist. Beispielsweise kann eine Schraubverbindung oder eine Nietverbindung angebracht werden, um den Fuß des Befestigungszapfens an dem Deckrahmen zu befestigen.In practice, the fastening element can be a fastening pin, the foot portion of which is connected to the cover frame. For example, a screw connection or a rivet connection can be used to attach the foot of the mounting stud to the deck frame.
In der Praxis kann der Kopfabschnitt des Befestigungszapfens einen Schlitz zur Aufnahme des freien Endes des ersten Schenkels des Ausstoßers aufweisen. Der Kopfabschnitt des Befestigungszapfens und das freie Ende des ersten Schenkels des Ausstoßers können miteinander fluchtende Öffnungen aufweisen, die von einem Befestigungsstift durchragt werden. Der Schlitz zur Aufnahme des freien Endes des Schenkels kann mit vorgegebener Tiefe in das Material des Befestigungzapfens eingebracht, z.B. eingesägt oder eingefräst werden. Der schmale Rand des ersten Schenkels des Ausstoßers liegt dann im Wesentlichen flach gegen den Grund des Schlitzes an, so dass der Ausstoßer durch den Befestigungsstift im Wesentlichen unschwenkbar am Befestigungszapfen festgelegt wird.In practice, the head portion of the attachment pin may have a slot for receiving the free end of the first leg of the ejector. The head section of the fastening pin and the free end of the first leg of the ejector can have openings which are aligned with one another and through which a fastening pin projects. The slot for accommodating the free end of the leg can be made with a predetermined depth in the material of the attachment pin, e.g. be sawn or milled. The narrow edge of the first leg of the ejector then rests essentially flat against the bottom of the slot, so that the ejector is fixed by the fastening pin essentially non-pivotingly on the fastening pin.
In der Praxis kann entweder der Bandführungsrahmen oder der Deckrahmen ortsfest sein. Wenn der Bandführungsrahmen ortsfest ist und der Deckrahmen quer zum Bandführungsrahmen, d. h. vom Bandführungsrahmen fort verschiebbar ist, wird durch die an dem Deckrahmen befestigten Ausstoßer das in dem Bandkanal des Bandführungsrahmens befindliche Band durch die sich öffnende schmale Seite des Bandkanals hinaus gedrückt. In der Öffnungsstellung des Deckrahmens befindet sich das Band vollständig außerhalb des Bandkanals. Die so hergestellte Bandschlaufe kann durch den Bandantrieb zusammengezogen werden, bis sie mit Spannung den zu umreifenden Gegenstand umgibt. Anschließend können die Enden der Bandschlaufe miteinander verschweißt werden.In practice either the tape guide frame or the cover frame may be stationary. If the tape spool is stationary and the cover frame is transverse to the tape spool, i. H. is slidable away from the tape guide frame, the tape located in the tape channel of the tape guide frame is pushed out through the opening narrow side of the tape channel by the ejectors attached to the cover frame. In the open position of the cover frame, the strap is completely outside the strap channel. The tape loop produced in this way can be pulled together by the tape drive until it surrounds the object to be strapped with tension. The ends of the strap loop can then be welded together.
Wird dagegen der Deckrahmen ortsfest an der Umreifungsmaschine angeordnet und der Bandführungsrahmen verschoben, so verharrt das Band beim Verschieben des Bandführungsrahmens an seinem Platz, wobei der Bandkanal des Bandführungsrahmens über den Ausstoßer geschoben wird und der Bandkanal folglich vom Band fortgezogen wird. Wiederum ist es in der Öffnungsstellung möglich, die gebildete Bandschlaufe zusammenzuziehen und zu verschließen.If, on the other hand, the cover frame is arranged in a stationary manner on the strapping machine and the strap guide frame is moved, the strap remains in place when the strap guide frame is moved, the strap channel of the strap guide frame being pushed over the ejector and the strap channel consequently being pulled away from the strap. Again it's in the open position possible to contract and close the band loop formed.
Weitere praktische Ausführungsformen und Vorteile der Erfindung sind nachfolgend im Zusammenhang mit den Zeichnungen beschrieben.
- Fig. 1
- zeigt eine schematische Seitenansicht einer Umreifungsmaschine.
- Fig. 2
- zeigt eine Seitenansicht eines erfindungsgemäßen Tragrahmens mit Bandführungsrahmen.
- Fig. 3
- zeigt eine dreidimensionale Ansicht eines Eckelements des Bandführungsrahmens und des Ausstoßers.
- Fig. 4
- zeigt eine vergrößerte Ansicht eines Abschnittes des Eckelements mit Öffnung für den Ausstoßer.
- Fig. 5
- zeigt eine dreidimensionale Schnittansicht des Bandführungsrahmens im Bereich des Ausstoßers in der Schließstellung.
- Fig. 6
- zeigt eine der
Fig. 5 entsprechende Ansicht des Bandführungsrahmens im Bereich des Ausstoßers in der Öffnungsstellung.
- 1
- shows a schematic side view of a strapping machine.
- 2
- shows a side view of a support frame according to the invention with a tape guide frame.
- 3
- Figure 12 shows a three-dimensional view of a corner element of the tape guide frame and the ejector.
- 4
- Figure 13 shows an enlarged view of a portion of the corner element with opening for the ejector.
- figure 5
- shows a three-dimensional sectional view of the tape guide frame in the area of the ejector in the closed position.
- 6
- shows one of the
figure 5 Corresponding view of the tape guide frame in the area of the ejector in the open position.
Die in der
Anschließend wird die gespannte Schlaufe vom Bandvorrat abgeschnitten. Der Schlaufenanfang wird mit dem Schlaufenende mittels eines Verschlussaggregats 10 verbunden. Das Verschlussaggregat 10 besteht in der Praxis z.B. aus einer Schweißvorrichtung, welche die beiden Enden der gebildeten Bandschlaufe miteinander verschweißt. Das Verschlussaggregat 10 verschweißt das folienartige Kunststoffmaterial, aus dem das Umreifungsband 2 besteht. Ein Förderer, mit dem der Gegenstand 7 in die Umreifungszone innerhalb des Bandführungsrahmens 9 hinein und daraus heraus transportiert wird, ist in
In
An dem Tragrahmen 11 sind Eckelemente 12 und gerade Elemente 13 befestigt. Eine vergrößerte Ansicht des Eckelements 12 ist in
Die
Der Bereich des Eckelements 12 mit den zwei Vorsprüngen 16, 17 ist vergrößert in
Die
Der zum ersten Schenkel 23 rechtwinklig verlaufende zweite Schenkel 24 erstreckt sich im Abstand zum Befestigungselement 21 bis in die flache Öffnung 18 des Eckelements 12 hinein. Es ist insbesondere in
In den
Selbstverständlich ist es auch möglich, den Bandführungsrahmen 9 ortsfest am Maschinengestell zu befestigen und den Deckrahmen 19 von der Seitenfläche des Bandführungsrahmens, in die der Bandkanal mündet, fortzubewegen.Of course, it is also possible to fasten the
Die in der vorliegenden Beschreibung, in den Zeichnungen sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebigen Kombinationen für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein. Die Erfindung ist nicht auf die beschriebenen Ausführungsformen beschränkt. Sie kann im Rahmen der Ansprüche und unter Berücksichtigung der Kenntnisse des zuständigen Fachmanns variiert werden.The features of the invention disclosed in the present description, in the drawings and in the claims can be essential both individually and in any combination for the realization of the invention in its various embodiments. The invention is not limited to the embodiments described. It can be varied within the scope of the claims and taking into account the knowledge of the person skilled in the art.
- 11
- Umreifungsmaschinestrapping machine
- 22
- Umreifungsbandstrapping
- 33
- Vorratsrollesupply roll
- 44
- Einziehvorrichtungretraction device
- 55
- Bandmagazintape magazine
- 66
- Bandfördervorrichtung, BandantriebBelt conveyor device, belt drive
- 77
- GegenstandObject
- 88th
- Spannvorrichtungclamping device
- 99
- Bandführungsrahmentape guide frame
- 1010
- Verschlussaggregatclosure unit
- 1111
- Tragrahmensupporting frame
- 1212
- Eckelementcorner element
- 1313
- gerades Elementstraight item
- 1414
- Ausstoßerejector
- 1515
- Bandkanal, gebogener AbschnittBand channel, curved section
- 1616
- Vorsprunghead Start
- 1717
- Vorsprunghead Start
- 1818
- flache Öffnungflat opening
- 1919
- Deckrahmendeck frame
- 2020
- Freiraumfree space
- 2121
- Befestigungselementfastener
- 2222
- Schraubescrew
- 2323
- erster Schenkelfirst leg
- 2424
- zweiter Schenkelsecond leg
- 2525
- Befestigungsstiftmounting pin
Claims (8)
dadurch gekennzeichnet, dass
der Ausstoßer (14) ein flaches Bauelement mit zwei einen Winkel zueinander aufweisenden Schenkeln (23, 24) ist, wobei das freie Ende des ersten Schenkels (23) an dem Befestigungselement (21) befestigt ist und das freie Ende des zweiten Schenkels (24) mit geringem Spiel in eine flache Öffnung (18) hinein ragt, die den Bandführungsrahmen (9) durchragt, sich quer zum Bandkanal (15) erstreckt und deren Höhe größer als die Höhe des Bandkanals (15) quer zur Ebene des Bandes ist.Device for strapping objects (7) using a flat strap (2), with at least one strap guide frame (9), a cover frame (19) and an ejector (14), the strap guide frame (9) having a flat surface open on one narrow side Has a tape channel (15), the narrow side of which opens out on a first side face of the tape guide frame (9), the cover frame (19) being displaceable relative to the tape guide frame (9) between a closed position and an open position, so that in the closed position it is against the first side surface of the tape guide frame (9) and covers the narrow side of the tape channel and is at a distance from the narrow side of the tape channel (15) in the open position, and wherein the ejector (14) is attached to a fastening element (21) in such a way that it is a second side surface of the tape guide frame (9) protrudes into the tape channel (15), the second side surface of the first side surface of the tape guide frame (9 ) opposite
characterized in that
the ejector (14) is a flat component with two legs (23, 24) at an angle to one another, the free end of the first leg (23) being attached to the fastening element (21) and the free end of the second leg (24) protrudes with little play into a flat opening (18) which protrudes through the tape guide frame (9), extends transversely to the tape channel (15) and whose height is greater than the height of the tape channel (15) transverse to the plane of the tape.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021125067.6A DE102021125067B4 (en) | 2021-09-28 | 2021-09-28 | Ejector for a strapping machine |
Publications (2)
Publication Number | Publication Date |
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EP4155217A2 true EP4155217A2 (en) | 2023-03-29 |
EP4155217A3 EP4155217A3 (en) | 2023-05-10 |
Family
ID=83457434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP22197696.2A Pending EP4155217A3 (en) | 2021-09-28 | 2022-09-26 | Ejector for strapping machine |
Country Status (3)
Country | Link |
---|---|
US (1) | US20230095472A1 (en) |
EP (1) | EP4155217A3 (en) |
DE (1) | DE102021125067B4 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3346598A1 (en) | 1983-04-06 | 1984-10-11 | Peter P. 6930 Eberbach Lüdtke | Method and apparatus for the tying round of tying material |
US5249518A (en) | 1992-10-02 | 1993-10-05 | Signode Corporation | Stripping mechanism for strapping machine |
US6073425A (en) | 1999-05-24 | 2000-06-13 | Tekpak Corporation | Guide frame of lashing tape of binding machine |
EP2051909B1 (en) | 2006-08-15 | 2010-12-08 | Maschinenfabrik Gerd Mosca AG | Tape strapping machine |
DE102018127052A1 (en) | 2018-10-30 | 2020-04-30 | Mosca Gmbh | Belt guide frame |
DE102020118163A1 (en) | 2019-09-30 | 2021-04-01 | Mosca Gmbh | Fastening means for the band channel of a strapping machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU79160A1 (en) * | 1978-03-03 | 1978-06-28 | Luedtke P | WELDING DEVICE FOR A PACKAGE SEALING MACHINE |
EP1249397B1 (en) * | 2001-04-09 | 2005-01-19 | Nichiro Kogyo Co., Ltd. | Arch type strapping machine |
US6951170B2 (en) * | 2003-06-17 | 2005-10-04 | Illinois Tool Works, Inc. | Strapping machine with improved chute release system |
-
2021
- 2021-09-28 DE DE102021125067.6A patent/DE102021125067B4/en active Active
-
2022
- 2022-09-26 EP EP22197696.2A patent/EP4155217A3/en active Pending
- 2022-09-26 US US17/952,641 patent/US20230095472A1/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3346598A1 (en) | 1983-04-06 | 1984-10-11 | Peter P. 6930 Eberbach Lüdtke | Method and apparatus for the tying round of tying material |
US5249518A (en) | 1992-10-02 | 1993-10-05 | Signode Corporation | Stripping mechanism for strapping machine |
US6073425A (en) | 1999-05-24 | 2000-06-13 | Tekpak Corporation | Guide frame of lashing tape of binding machine |
EP2051909B1 (en) | 2006-08-15 | 2010-12-08 | Maschinenfabrik Gerd Mosca AG | Tape strapping machine |
DE102018127052A1 (en) | 2018-10-30 | 2020-04-30 | Mosca Gmbh | Belt guide frame |
DE102020118163A1 (en) | 2019-09-30 | 2021-04-01 | Mosca Gmbh | Fastening means for the band channel of a strapping machine |
Also Published As
Publication number | Publication date |
---|---|
US20230095472A1 (en) | 2023-03-30 |
DE102021125067B4 (en) | 2023-08-03 |
EP4155217A3 (en) | 2023-05-10 |
DE102021125067A1 (en) | 2023-03-30 |
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