DE102019109648B4 - CONNECTING DEVICE - Google Patents

Abstract

Connection device (1) for connecting a tubular film to a device, the connection device (1) comprising: a base body (2) which forms a channel (21), the channel (21) extending along a channel axis (A) and ends at an opening in the base body (20a) and opens out to the outside; a clamping device (3) which surrounds the opening of the base body and is designed to clamp the tubular film after being pulled over the base body (2) in a clamping space (310) in such a way that that the tubular film is fastened in a sealed manner and a product can be transferred between the base body (2) and the tubular film without contamination; an insertion means (8) that at least partially encompasses the base body (2) and the tubular film drawn over the base body (2) runs around and both in a circumferential direction (UR1) that encircles the channel axis (A) and in a circumferential direction (UR2) opposite to the circumferential direction t is movable that (i) when moving in the circumferential direction (UR1) it moves radially to the channel axis (A) into the clamping space (310) and thereby transfers the tubular film constricting radially into the clamping space (310), and (ii ) when moving in the opposite circumferential direction (UR2) is displaced radially to the channel axis (A) out of the clamping space (310); andan annular insertion holder (4) which surrounds the clamping device (3) around the channel axis (A) and has an annular space (48) which the insertion means (8) when moving in the circumferential direction (UR1) and when moving in the opposite direction Circumferential direction (UR2) at least partially leads; anda pulling device (5) to which a fastening section (81) of the insertion means (8) is attached and which is set up to (i) exert a force (F +) on the insertion means (8) in such a way that it causes the movement in the circumferential direction ( UR1) executes, and (ii) exerting on the insertion means (8) a force (F-) opposite to the force (F +) in such a way that it executes the movement in the opposite circumferential direction (UR2); wherein the pulling device (5) is arranged to apply the force (F +) and the opposing force (F-) to the insertion means (8) tangentially to the annular insertion holder (4).

Description

The invention relates to a connection device for connecting a tubular film to a device, in particular a connection device for the contamination-free transfer of powder / granulate-like substances between the tubular film and the device.

Connection devices for connecting tubular foils are generally known from the prior art.

For example, the European patent application shows EP 3 428 080 A1 a connecting device for connecting a tubular film.

The connection device shown there contains a clamping device in which a tubular film for emptying / filling a container can be clamped.

The clamping device defines a clamping space in which the tubular film is tied together by means of a rope and then clamped by axially displacing a clamping ring.

To implement the clamping, the rope used is inserted into an annular space of an insertion holder by means of a cable insertion element until it exits to the outside again after passing through the annular space and completely running around the tubular film. Both ends of the rope can then be grasped from the outside by a user and can be tightened using a lever so that the rope, together with the film, can be moved into the clamping space and the film can then be clamped by the clamping ring.

On the one hand, the user has to repeat this process for each tubular film to be connected, which in particular takes time. On the other hand, the corresponding cable insertion element and the lever for pulling the cable are structurally complex.

Other alternatives to the rope mentioned in the European patent application are also structurally complex in that devices for the radial displacement of insertion elements have to be provided at very short intervals along the insertion holder.

Further prior art can be found in U.S. 1,362,517 A .

Against this background, the object of the invention is to create a connection device which has a simpler structural design. At least the object of the invention is to create an alternative connection device.

This object is achieved with a connection device according to patent claim 1. Preferred embodiments are the subject of the dependent claims.

• einen Grundkörper, der einen Kanal ausbildet, wobei der Kanal sich entlang einer Kanalachse erstreckt und an einer Öffnung des Grundkörpers endet und nach Außen mündet;
• eine Klemmeinrichtung, die die Öffnung des Grundkörpers umläuft und eingerichtet ist, die schlauchförmige Folie nach Überziehen über den Grundkörper in einem Klemmraum derart festzuklemmen, dass die schlauchförmige Folie abgedichtet befestigt ist und ein, insbesondere pulver-/granulatförmiges, Produkt zwischen dem Grundkörper und der schlauchförmigen Folie kontaminationsfrei überführt werden kann; und
• ein Einführmittel, das den Grundkörper und die über den Grundkörper gezogene schlauchförmige Folie zumindest teilweise umläuft und sowohl in einer die Kanalachse umlaufenden Umfangsrichtung als auch einer zu der Umfangsrichtung entgegengesetzten Umfangsrichtung derart bewegbar ist, dass es
• (i) bei Bewegung in der Umfangsrichtung sich radial zu der Kanalachse in den Klemmraum versetzt und hierdurch die schlauchförmige Folie radial zusammenschnürend in den Klemmraum überführt, und
• (ii) bei Bewegung in der entgegengesetzten Umfangsrichtung sich radial zu der Kanalachse aus dem Klemmraum heraus versetzt.

According to one aspect of the invention, a connection device for connecting a tubular film / tubular film to a device has the following features:

• a base body which forms a channel, the channel extending along a channel axis and ending at an opening in the base body and opening out to the outside;
• a clamping device that runs around the opening of the base body and is set up to clamp the tubular film after being pulled over the base body in a clamping space in such a way that the tubular film is fastened in a sealed manner and a product, in particular powder / granular product, between the base body and the tubular Foil can be transferred contamination-free; and
• an insertion means which at least partially surrounds the base body and the tubular film drawn over the base body and can be moved both in a circumferential direction surrounding the channel axis and in a circumferential direction opposite to the circumferential direction in such a way that it
• (i) when moving in the circumferential direction, it is displaced radially to the channel axis into the clamping space and thereby transfers the tubular film constricting radially into the clamping space, and
• (ii) when moving in the opposite circumferential direction, it is offset radially to the channel axis out of the clamping space.

In the bulk goods manufacturing or processing industry, it is necessary to transfer products in powder / granular form from a container to a device or from a device to a container. Here, tubular films are often used, which connect the device and the container to one another.

The tubular films used can either be part of the container itself, such as the inlet / outlet of a big bag or the inner bag of a barrel, or can be tubular film pieces cut from a tubular film supply, which are attached to the device on the one hand and to the container on the other attached so that the product can be transferred.

For example, the connection device according to the invention is dimensioned in such a way that tubular foils with diameters of 420 mm to 600 mm can be connected.

• eine Produktionsanlage oder Silo, in die ein Bigbag oder Fass zu entleeren ist,
• eine Produktionsanlage oder Silo, aus der heraus das Produkt in einen Bigbag oder ein Fass zu füllen ist, und
• einen Isolator, an dem ein zu entleerendes Fass zu befestigen ist.
• Vor diesem Hintergrund handelt es sich bei der erfindungsgemäßen Anschlussvorrichtung bevorzugt um eine Vorrichtung zum Befüllen und/oder Entleeren von Behältern, die mit der schlauchförmigen Folie - wie im Vorhergehenden erläutert - ausgestattet sind.

The devices for which the connection device according to the invention is suitable or on which the connection device is preferably mounted can be - not conclusively - for example:

• a production plant or silo into which a big bag or barrel is to be emptied,
• a production plant or silo from which the product is to be filled into a big bag or barrel, and
• an insulator to which a barrel to be emptied is to be attached.
• Against this background, the connection device according to the invention is preferably a device for filling and / or emptying containers which are equipped with the tubular film - as explained above.

The connection device is preferably installed using a mounting flange on which, after installation, the channel opens into the device via an opening.

According to the invention, the clamping device is designed in such a way that the tubular film is fastened in a sealed manner, for example in a gas-tight manner, and thus the product can be transferred without contamination or the container can be emptied / filled without contamination.

According to the invention, the clamping means along the circumference of the base body, d. H. in the circumferential direction and the circumferential direction opposite thereto, in order to move it radially to the channel axis into the clamping space or out of the clamping space. On the one hand, the clamping means can remain installed in a stationary manner and, on the other hand, it can be of simple construction, because devices that move the clamping means radially do not have to be arranged in several positions around the base body.

The channel axis can preferably correspond to the longitudinal axis of the base body and / or, if the channel is symmetrical, to the corresponding axis of symmetry. The channel is preferably circular in section perpendicular to the channel axis, so that the channel axis preferably corresponds to the central axis.

The insertion means and the clamping device can be designed in such a way that the insertion means remains in the clamping space after the tubular film has been inserted and is only removed again when a new tubular film is to be connected, or immediately removed from the clamping space after the tubular film has been inserted becomes.

The clamping device is preferably set up to open the clamping space and to close it again after the radial insertion of the tubular film in order to clamp the tubular film firmly in the clamping space.

The clamping device is set up in particular to open the clamping space in the direction of the channel axis in such a way that the clamping space is open radially to the channel axis to the outside and closed to the inside (for example by an outer surface of the base body), and after the radial insertion of the tubular film in To close the direction of the channel axis again in order to clamp the tubular film in the clamping space.

The clamping device of the connection device can preferably be at least one inflatable seal which can be expanded / expanded in the direction of the channel axis, the clamping device being set up to actuate the inflatable seal to open and close the clamping space. The base body of the connection device preferably has a first fastening flange and a second fastening flange, the inflatable seal being arranged on one of the two fastening flanges and being expandable in the direction of the channel axis in such a way that it closes the clamping space located between the first and second fastening flange and against the presses the other mounting flange.

As a result of this configuration, the tubular film can be clamped in the clamping space by the inflatable seal.

• eine ringförmige Einführhalterung, die die Klemmeinrichtung um die Kanalachse herum umläuft und einen Ringraum aufweist, der das Einführmittel bei der Bewegung in der Umfangsrichtung und der Bewegung in der entgegengesetzten Umfangsrichtung zumindest teilweise führt; und
• eine Zugvorrichtung, an der ein Befestigungsabschnitt des Einführmittels befestigt ist und die eingerichtet ist, (i) auf das Einführmittel eine Kraft, bevorzugt eine Zugkraft, derart auszuüben, dass es die Bewegung in der Umfangsrichtung ausführt, und (ii) auf das Einführmittel eine zu der Kraft entgegengesetzte Kraft, bevorzugt eine entsprechende Druckkraft, derart auszuüben, dass es die Bewegung in der entgegengesetzten Umfangsrichtung ausführt; wobei
• die Zugvorrichtung eingerichtet ist, die Kraft und die entgegengesetzte Kraft auf das Einführmittel tangential zu der ringförmigen Einführhalterung aufzubringen.

The connection device according to the invention also has:

• an annular insertion holder which surrounds the clamping device around the channel axis and has an annular space which at least partially guides the insertion means during the movement in the circumferential direction and the movement in the opposite circumferential direction; and
• a pulling device to which a fixing section of the insertion means is fixed and which is set up (i) a force, preferably a pulling force, on the insertion means in this way exerting that it executes the movement in the circumferential direction, and (ii) exerting on the insertion means a force opposite to the force, preferably a corresponding compressive force, in such a way that it executes the movement in the opposite circumferential direction; in which
• the pulling device is set up to apply the force and the opposing force to the insertion means tangentially to the annular insertion holder.

The pulling device is preferably attached to the insertion bracket.

The insertion means can slide in the annular space during the movement in the circumferential direction and the corresponding opposite circumferential direction, and during the processes in which it is shifted into the clamping space or back out of it again, by means of side walls that form the annular space in the direction of the channel axis or limit it radially to this, is guided so that it can be reliably displaced between the annular space and the clamping space.

The pulling device of the connection device according to the invention is preferably a motorized pulling device which is set up to exert the forces uniformly and continuously on the clamping means. Drives for the motorized pulling device can be, for example, pneumatic or electric drives.

The tangential alignment of the pulling device in relation to the ring-shaped insertion holder enables the insertion means to be guided well, in particular when it is designed as a rope, band or chain, as will be explained below.

The fastening section of the insertion means is preferably a section via which the insertion means can be releasably fastened to the pulling device. For example, the fastening section enables a screw connection between the pulling device and the insertion means.

1. (i) bei Aufbringen der Kraft, vorzugsweise der Zugkraft, auf das Einführmittel durch die Zugvorrichtung das Einführmittel einerseits durch die Befestigungseinrichtung gehaltert wird und andererseits durch die Zugvorrichtung derart gezogen wird, dass es die Bewegung in der Umfangsrichtung ausführt und sich aus dem Ringraum heraus radial zu der Kanalachse in den Klemmraum versetzt, und
2. (ii) bei Aufbringen der entgegengesetzten Kraft, vorzugsweise der Druckkraft, auf das Einführmittel durch die Zugvorrichtung das Einführmittel einerseits durch die Befestigungseinrichtung gehaltert wird und andererseits durch die Zugvorrichtung derart gedrückt wird, dass es die Bewegung in der entgegengesetzten Umfangsrichtung ausführt und sich aus dem Klemmraum heraus radial zu der Kanalachse in den Ringraum versetzt.

A further fastening section of the insertion means is preferably fastened to a fastening device which is provided on the insertion holder in such a way that the insertion means extends from the fastening device through the annular space to the pulling device; in which

1. (i) when the force, preferably the tensile force, is applied to the insertion means by the pulling device, the insertion means is held on the one hand by the fastening device and on the other hand is pulled by the pulling device in such a way that it executes the movement in the circumferential direction and radially out of the annular space offset to the channel axis in the terminal space, and
2. (ii) when the opposite force, preferably the compressive force, is applied to the insertion means by the pulling device, the insertion means is held on the one hand by the fastening device and on the other hand is pressed by the pulling device in such a way that it executes the movement in the opposite circumferential direction and emerges from the clamping space offset out radially to the channel axis in the annulus.

The further fastening section is preferably also designed in such a way that the insertion means can be fastened in a detachable manner, for example via a screw connection.

The fastening device and the pulling device are preferably fastened to the insertion holder, the insertion means running through corresponding openings in the insertion holder into / out of the annular space and being fastened outside the insertion holder to the fastening device or the pulling device. The fastening device can be, for example, a fixed fastening device provided on the insertion holder or, alternatively, a further pulling device.

The insertion means is preferably a rope, an elastic band or a chain made of rigid elements rotatably mounted with respect to one another, which is pulled and pushed by the pulling device.

The mentioned insertion means are preferably dimensioned so that when the opposite force is applied, d . H. a preferred compressive force, the corresponding insertion means performs the desired movement in the opposite circumferential direction and moves out of the clamping space into the annular space.

The rope is, for example, a metal rope that has a corresponding inherent rigidity.

1. (i) bei Aufbringen der Kraft, insbesondere der Zugkraft, auf das Einführmittel durch die Zugvorrichtung das Einführmittel einerseits durch die Befestigungseinrichtung gehaltert wird und andererseits durch die Zugvorrichtung derart gezogen wird, dass es die Bewegung in der Umfangsrichtung zu einem solchen Ausmaß ausführt, dass der Kreuzungsabschnitt in den Klemmraum versetzt wird, und
2. (ii) bei Aufbringen der entgegengesetzten Kraft, insbesondere der Druckkraft, auf das Einführmittel durch die Zugvorrichtung das Einführmittel einerseits durch die Befestigungseinrichtung gehaltert wird und andererseits durch die Zugvorrichtung derart gedrückt wird, dass es die Bewegung in der entgegengesetzten Umfangsrichtung zu einem solchen Ausmaß ausführt, dass der Kreuzungsabschnitt wieder aus dem Klemmraum heraus versetzt wird.

The insertion means, for example the rope, the elastic band or the chain, is preferably fastened on the one hand to the fastening device, runs through the base body through the annular space preferably completely in such a way that it crosses at a crossing section, and on the other hand is fastened to the pulling device, whereby

1. (i) when the force, in particular the tensile force, is applied to the insertion means by the pulling device, the insertion means is held on the one hand by the fastening device and, on the other hand, is pulled by the pulling device in such a way that the movement in the Executes circumferential direction to such an extent that the crossing portion is displaced into the clamping space, and
2. (ii) when the opposite force, in particular the compressive force, is applied to the insertion means by the pulling device, the insertion means is held on the one hand by the fastening device and on the other hand is pressed by the pulling device in such a way that it executes the movement in the opposite circumferential direction to such an extent, that the crossing section is moved out of the terminal space again.

The pulling device preferably includes a linearly guided pulling element to which the fastening section of the insertion means is attached and is designed to exert the force and the opposing force on the insertion means by displacing the pulling element in a linearly guided manner; and
the pulling device is arranged in such a way that the corresponding pulling element can be displaced tangentially to the annular insertion holder.

The pulling element is preferably a pneumatically operated slide that slides linearly on a guide. Because the tension element can be displaced linearly and tangentially to the annular insertion holder, the compressive force can be exerted particularly well on the insertion means in the form of a rope, so that it performs the desired movement.

• eine Dichtung, die den Grundkörper umläuft und eingerichtet ist, eine neue schlauchförmige Folie abgedichtet zu befestigen, wobei die Dichtung derart angeordnet und ausgestaltet ist, dass die neue schlauchförmige Folie so befestigt/abgedichtet wird, dass sie auf einen in dem Klemmraum festgeklemmten schlauchförmigen Folienrest, der von einer zuvor angeschlossenen schlauchförmigen Folie stammt, gedrückt wird und die Dichtung eine solche Dichtkraft auf die neue schlauchförmige Folie und den schlauchförmigen Folienrest ausübt, dass der Folienrest, bevorzugt manuell, herausgezogen werden kann, ohne eine durch die Dichtkraft erzielte Dichtwirkung zu verlieren.

The connection device according to the invention preferably also has:

• a seal which runs around the base body and is set up to fasten a new tubular film in a sealed manner, the seal being arranged and configured in such a way that the new tubular film is fastened / sealed in such a way that it is attached to a tubular film residue clamped in the clamping space, which comes from a previously connected tubular film, is pressed and the seal exerts such a sealing force on the new tubular film and the tubular film residue that the film residue can be pulled out, preferably manually, without losing a sealing effect achieved by the sealing force.

Preferably, the insertion holder can be moved in the direction of the channel axis by a guide device and the seal is attached to the insertion holder in such a way that when the insertion holder moves up to the base body, it brushes the new tubular film over the remaining film, thereby applying the sealing force radially to the channel axis on the new tubular Foil and the remainder of the foil exercises.

The seal can be formed, for example, by a first sealing lip and a second sealing lip, which exert their sealing force radially to the channel axis. The clamping space is preferably located between the sealing lips when the insertion holder has moved as close as possible to the base body. As an alternative to this, the seal can also be formed, for example, by a first inflatable seal and a second inflatable seal, which exert their sealing force radially to the channel axis, whereby in this case too the clamping space is preferably located between the sealing lips when the insertion bracket is moved as close as possible to the base body.

The insertion bracket preferably carries a sealing flange with a seal by means of which the tubular film can be sealed at an end face of the base body pointing in the direction of the channel axis when the insertion bracket is moved as close as possible to the base body. Alternatively, the insertion holder can carry a sealing ring, by means of which the tubular film, when the insertion holder is moved as close as possible to the base body, can be sealed on a surface of the base body facing the channel axis in the radial direction, preferably flush with an edge defining the opening.

The seal of the sealing flange / sealing ring is preferably an inflatable seal which can be actuated for sealing the tubular film.

The guide device is preferably formed from one or a plurality of lifting cylinders which can be extended and retracted for moving the insertion holder.

The insertion bracket can seal the sealing flange / sealing ring, which can seal the tubular film axially / radially to the channel axis via its seal on the base body, both in the event that the connection device is intended for emptying a container, as well as in the event that the connection device is intended for filling a container.

• Wenn es sich nicht um den aller ersten Anschluss einer schlauchförmigen Folie handelt, ist in dem Klemmraum ein Folienrest festgeklemmt, der von einer zuvor angeschlossenen schlauchförmigen Folie stammt.

Proper use of the connection device according to the invention is as follows:

• If it is not the very first connection of a tubular film, a remnant of film is clamped in the clamping space, which comes from a previously connected tubular film.

In a first step, the insertion holder is removed from the base body, for example by extending the lifting cylinder.

The user can now pull a new tubular film to be connected over the base body, so that it protrudes beyond the clamping space over the base body.

The new tubular film is now sealed off from the base body, for example by moving the insertion bracket closer, whereby the sealing lips / inflatable seals brush the new tubular film over the remaining film and press both films together against the base body.

In the next step, the user can open the clamping space and remove the remainder of the film by pulling it away from under the new tubular film.

To remove the remainder of the film, the base body can have a lateral engagement, wherein such a lateral engagement can be provided in particular when the connection device is provided for big bags. However, if the connection device is mounted on a device which itself has interventions, such as an insulator with gloves, the engagement (of the base body) is not necessary.

In this state, the user now activates the pulling device, as a result of which the insertion means constricts the new tubular film in the clamping space.

The user then closes the clamping space, for example by activating the inflatable seal, which expands in the direction of the channel axis and clamps the tubular film. The insertion means can remain in the clamping space or be removed beforehand.

The seal of the sealing flange / sealing ring is then preferably additionally actuated in order to fix the tubular film in a sealed manner on the end face / the edge of the base body.

The powdery / granular product to be transferred can now be transferred between the tubular film and the base body, for example by emptying or filling the big bag or a film sack accommodated in a barrel.

The tubular film is then tied twice and severed between the tying points. The part of the severed tubular film that remains on the base body forms the remainder of the film, which is removed again when a tubular film is reconnected.

• 1A zeigt die erfindungsgemäße Anschlussvorrichtung in einer perspektivischen Ansicht, wobei eine Einführhalterung über eine Führungseinrichtung maximal an einen Grundkörper der Anschlussvorrichtung herangefahren ist;
• 1B zeigt die erfindungsgemäße Anschlussvorrichtung ebenfalls in einer perspektivischen Ansicht, wobei die Einführhalterung durch die Führungseinrichtung von dem Grundkörper entfernt ist bzw. die Führungseinrichtung maximal ausgefahren ist;
• 1C zeigt die erfindungsgemäße Anschlussvorrichtung von oben, gesehen entlang einer Kanalachse eines durch den Grundkörper definierten Kanals;
• 2 zeigt den Grundkörper der erfindungsgemäßen Anschlussvorrichtung in einer Seitenansicht;
• 3A zeigt perspektivisch eine Einführhalterung und eine Zugvorrichtung der erfindungsgemäßen Anschlussvorrichtung in einem Schnitt senkrecht zur Kanalachse der Anschlussvorrichtung, wobei ein Einführmittel in Form eines Seiles sichtbar ist;
• 3B zeigt die Schnittansicht aus 3A, gesehen in Richtung der Kanalachse;
• 3C zeigt eine Schnittansicht der erfindungsgemäßen Anschlussvorrichtung entlang der Kanalachse, wobei ein durch die Klemmeinrichtung definierter Klemmraum und ein Ringraum der Einführhalterung, in dem das Seil angeordnet ist, sichtbar sind;
• 3D zeigt den in 3C eingekreisten Bereich in einer vergrößerten Darstellung;
• 4A zeigt eine bevorzugte Variante der erfindungsgemäßen Anschlussvorrichtung, die zum Anschließen von BigBags dient, in einer perspektivischen Ansicht, wobei die Einführhalterung maximal an den Grundkörper der Anschlussvorrichtung durch die Führungseinrichtung herangefahren ist;
• 4B zeigt die bevorzugte Variante der erfindungsgemäßen Anschlussvorrichtung aus 4A, wobei die Einführhalterung durch die Führungseinrichtung maximal von dem Grundkörper entfernt ist bzw. weggefahren ist;
• 5A zeigt eine Fassentleerungseinrichtung, bei der die erfindungsgemäße Anschlussvorrichtung auf der Rückseite eines Isolators montiert ist; und
• 5B zeigt die Fassentleerungsvorrichtung aus 5A von vorne.

In the following, a preferred embodiment of a connection device according to the invention is explained with reference to the accompanying figures.

• 1A shows the connection device according to the invention in a perspective view, with an insertion holder being moved up to a base body of the connection device via a guide device;
• 1B shows the connection device according to the invention also in a perspective view, the insertion holder being removed from the base body by the guide device or the guide device being extended to the maximum;
• 1C shows the connection device according to the invention from above, seen along a channel axis of a channel defined by the base body;
• 2 shows the base body of the connection device according to the invention in a side view;
• 3A shows in perspective an insertion holder and a pulling device of the connection device according to the invention in a section perpendicular to the channel axis of the connection device, an insertion means in the form of a rope being visible;
• 3B shows the sectional view from 3A seen in the direction of the channel axis;
• 3C shows a sectional view of the connection device according to the invention along the channel axis, wherein a clamping space defined by the clamping device and an annular space of the insertion holder, in which the cable is arranged, are visible;
• 3D shows the in 3C circled area in an enlarged view;
• 4A shows a preferred variant of the connection device according to the invention, which is used to connect BigBags, in a perspective view, the insertion holder being moved as far as possible to the base body of the connection device by the guide device;
• 4B shows the preferred variant of the connection device according to the invention 4A wherein the insertion holder is maximally removed or moved away from the base body by the guide device;
• 5A shows a drum emptying device in which the connection device according to the invention is mounted on the back of an insulator; and
• 5B shows the drum emptying device 5A from the front.

In 1A is a connection device according to the invention 1 shown.

The connection device 1 includes a body 2 , a clamping device 3 , an insertion bracket 4th , a pulling device 5 , and a guide device 6th .

1A and 1B are each a perspective view of the connection device according to the invention 1 and differ in that the insertion bracket 4th by the guide device 6th to the main body 2 has moved in or out.

1C shows the connection device according to the invention 1 from above, viewed along a canal axis A. .

The connection device 1 serves according to the invention for connecting a tubular film to a device, for example to connect a container to the device.

In the bulk goods industry, for example, powder / granulate products from facilities such as production plants or silos are filled into containers such as so-called big bags or barrels. The filled containers are then emptied in facilities such as processing plants or silos on the part of the bulk goods processing industry in order to subject the product to further processing or to store it for later processing.

In both processes, i.e. when filling or emptying, the containers are preferably connected to the corresponding device via a tubular film. The tubular film can be part of the container itself or a simple tubular connecting film which extends between the container and the device.

For example, the tubular film can be the inlet / outlet of a big bag or the inlet / outlet of an inner bag of a barrel.

The connection device according to the invention 1 allows such a tubular film to be connected reliably and securely.

(Basic body 2 )

2 shows the main body 2 the connection device according to the invention 1 in a perspective side view, the clamping device 3 , Insertion bracket 4th , Pulling device 5 and guide device 6th are not mounted.

The basic body 2 forms a channel in its interior 21 from, which runs along the already mentioned canal axis A. extends. The base body is made of a metal, for example. The canal axis A. corresponds to the longitudinal axis of the main body 2 . The diameter of the canal 21 is, for example, 0.5m.

When the connection device according to the invention is used as intended 1 can move the product in the direction of the channel axis A. through the main body 2 or the channel 21 be transferred through.

The channel 21 opens at a connection end of the connection device 1 , to which the tubular film is to be connected as intended, via an opening 20a of the main body 2 in the external environment of the connection device 1 .

At an opposite end of the body 2 there is a mounting flange 22nd via which the connection device 1 can be attached to the corresponding device, for example by means of screw connections. The channel 21 opens at the opposite end after assembly of the connection device 1 in the said facility.

The basic body 2 also includes a first mounting flange 23 and a second mounting flange 24 that are the basic body 2 and for fastening the clamping device explained below 3 to serve.

(Clamping device 3 )

The clamping device 3 is used in particular for fastening and sealing a tubular film to be connected.

The clamping device 3 revolves around the body 2 completely as it is in 1B is shown.

The clamping device 3 is in this embodiment an inflatable seal, which by applying pressure in the direction of the channel axis A. can be expanded by adding a medium, such as a gas, in particular compressed air, into the inflatable seal 3 is initiated. In 2 is the corresponding valve connection 32 shown for a pneumatic pressure line.

The clamping device 3 , i.e. the inflatable seal, is on the in 1B and 2 second mounting flange shown 24 arranged and can be expanded so far in the direction of the channel axis by the introduction of the gas that it against the in 1B and 2 shown first mounting flange 23 presses.

The arrangement of the inflatable seal 3 can in principle also be the other way round, ie the inflatable seal could be on the first fastening flange 23 be arranged and by introducing the gas so far in the direction of the channel axis A. are expanded so that they are against the second mounting flange 24 presses.

The arrangement of the inflatable seal 3 on the second mounting flange 24 is in a longitudinal section along the channel axis A. corresponding sectional view in 3D good to see. The inflatable seal 3 is intended to be used for the sealed clamping of a tubular film, which will be discussed in detail below.

(Insertion bracket)

The connection device according to the invention 1 also includes the introducer bracket 4th that referring to 1A to C. , and 3A to 3D is described.

The insertion bracket 4th has a ring section 41 on, which is dimensioned so that it has the clamping device 3 preferably circulates completely.

The insertion bracket 4th is about guide sections 42 in the circumferential direction of the ring section 41 are formed at a certain distance from one another, on a guide device 6th who have favourited two lift cylinders 61 has attached. The lifting cylinders 61 are in the direction of the canal axis A. for example, pneumatically adjustable, making the insertion bracket 4th axial to the channel axis A. can be proceeded.

In 1A is the insertion bracket 4th maximum to the main body 2 moved up or are the lifting cylinders 61 withdrawn to the maximum.

1B on the other hand, shows a state in which the insertion holder 4th at most from the main body 2 is moved away or in which the lifting cylinder 61 are extended to the maximum.

The insertion bracket 4th further includes arm sections 43 attached to the ring section 41 attach and a sealing ring 44 holders that are in the in 1A shown condition to the opening 20a of the main body 2 is approached and over which a tubular film at the opening 20a radial to the canal axis A. can be sealed.

The sealing ring 44 carries this on the base body 2 facing side, for example, an inflatable seal 45 that is responsible for said sealing against the opening 20a can be operated. The corresponding inflatable seal 45 is in 3C and 3D good to see.

The arm sections 43 hold the sealing ring 44 in relation to the channel axis A. in such a position that the lifting cylinders are fully retracted 61 the sealing ring 44 with one the opening 20a defining end face of the base body 2 running in the direction of the channel axis A. points, flush. The user can use one via the base body 2 whipped tubular film at the opening 20a sealed fix by holding the inflatable seal 45 activated, which then moves radially to the canal axis A. expands to such an extent that it attaches the tubular film to the base body radially to the channel axis 2 presses. One for the inflatable seal 45 required valve connection 46 for a pressure pipe, for example, is in 1A-C shown.

The ring section 41 carries on the clamping device 3 facing side a seal consisting of a first sealing lip 47 and a second sealing lip 49 is constructed.

The first sealing lip 47 and the second sealing lip 49 are axial to the channel axis A. arranged at a distance from one another, with an annular space between them 48 is trained. The sealing lips 47 , 49 serve to put a new tubular film to be connected over a piece of film that passes through the inflatable seal 3 is clamped to strip. The corresponding function is explained in detail below.

In the terminal room 48 is a clamping element 8th included, which is explained below.

(Introducer and pulling device)

That in the terminal room 48 recorded clamping means 8th is in this embodiment a rope, in particular a metal rope, which has a cross-sectional diameter of 4mm, for example.

3A and 3B Figure 11 shows a sectional view of the introducer mount 4th and the pulling device 5 , where the cutting plane is perpendicular to the channel axis A. runs.

The rope 8th includes an attachment portion 81 attached to a guide element 51 is attached. The fastening section 81 of the rope 8th can for example have a thread onto which nuts are screwed for fastening.

The guide element 51 the pulling device 5 is, for example, a pneumatic slide that rests on a linear guide 52 can be proceeded. Corresponding pneumatic valve connections 53 , 54 for the connection of pressure lines are in 3A , 3B shown.

The rope 8th also includes a further fastening section 82 attached to a fastening device 9 is attached. The fastening can in turn be realized, for example, by a screw connection.

• - Das Seil 8 verläuft ausgehend von dem Führungselement 51 der Zugvorrichtung 5 durch einen Durchbruch, der in einer den Ringraum 48 in zu der Kanalachse A radialer Richtung begrenzenden Außenwand des Ringabschnitts 41 gebildet ist, in den Ringraum 48;
• - von dort aus verläuft das Seil 8 in dem Ringraum 48 soweit, bis es die Kanalachse A vollständig umlaufen hat und sich an dem Kreuzungsabschnitt 83 überschneidet;
• - letztendlich durchläuft das Seil 8 nach dem Kreuzungsabschnitt 83 noch einen weiteren Durchbruch, der ebenfalls in der den Ringraum 48 begrenzenden Außenwand des Ringabschnitts 41 gebildet ist, und von dort zu der Befestigungseinrichtung 9, an der es befestigt ist.

The pulling device 5 and the fastening device 9 are arranged so that it is in the annulus 48 located rope 8th at an intersection 83 overlaps, whereby the course or the leadership of the rope 8th represents as follows:

• - The rope 8th runs starting from the guide element 51 the pulling device 5 through an opening in one of the annulus 48 in to the channel axis A. outer wall of the ring section delimiting the radial direction 41 is formed in the annulus 48 ;
• - from there the rope runs 8th in the annulus 48 until it is the canal axis A. has completely revolved and is at the intersection section 83 overlaps;
• - in the end the rope goes through 8th after the intersection 83 yet another breakthrough, which is also in the annulus 48 limiting outer wall of the ring section 41 is formed, and from there to the fastening device 9 to which it is attached.

In other words, the fastening section is 81 of the rope 8th on the guide element 51 and the further fastening section 82 on the fastening device 9 attached in such a way that there is a loop of rope 8th within the annulus 48 is located.

The pulling device 5 is on the ring section 41 the insertion bracket 4th attached so that it covers the corresponding opening and the rope 8th from the guide element 51 starting tangentially to the outer wall delimiting the annulus into the annulus 48 entry. In other words, the rope runs 8th from the guide element 51 straight through the opening and comes immediately after passing through the opening with the outer wall of the ring section delimiting the annular space 41 in contact and is accordingly starting from there in the annulus 48 steered on its path.

The fastening device 9 is similar to the pulling device 5 on the ring section 41 the insertion bracket 4th so attached that they are the other in the the annulus 48 limiting outer wall formed breakthrough covered. The further fastening section 82 of the rope 8th is like that on the fastener 9 that attached the rope 8th the further breakthrough in a straight line and tangential to the the annulus 48 bounding outer wall passes through.

• 3A und 3B zeigen eine Ausgangsstellung, in der sich das Seil 8 in dem Ringraum 48 befindet.

The function of the pulling device 5 is shown below:

• 3A and 3B show an initial position in which the rope is 8th in the annulus 48 is located.

When the user pulls the pulling device 5 actuated, the guide element is 51 or the pneumatic slide along the guide 52 offset in a straight line. The pneumatic slide 51 exerts a force (F ⁺ ), ie a tensile force, on the rope 8th out.

The rope 8th moves through this exercise of the force (F ⁺ ) within the annulus 48 in the circumferential direction UR1 (Counterclockwise), whereby the loop of the rope in the annulus is located 8th tied up and the rope in the terminal room 310 is moved. Moving the rope 8th takes place when the pneumatic slide is moved 51 successively, which is why it is ensured that the rope 8th reliably in the terminal room 310 led crosses.

When the pneumatic slide 51 has moved to the maximum, the rope is 8th so tied together that also the intersection section 83 in the terminal room 310 is located.

To the rope 8th then back into the annulus 48 to move, the user operates the pulling device 5 and moves the pneumatic slide 51 back in his in 3B Starting position shown.

The sled 51 exerts a force (F ^- ), i.e. a compressive force, on the rope during this movement 8th out. The rope 8th moves in the opposite circumferential direction when this compressive force is exerted UR2 and is thereby returned to the annulus 48 offset. The radial displacement of the rope 8th takes place here again successively.

• 3D zeigt eine vergrößerte Darstellung des Bereiches 3D aus 3C.

The purpose of the introducer or rope 8th is referring to 3C and 3D described showing a longitudinal section of the connecting device 1 along the canal axis A. demonstrate.

• 3D shows an enlarged representation of the area 3D out 3C .

When the insertion bracket 4th by the guide device 6th or the lifting cylinder 61 maximum to the main body 2 approached and the terminal room 310 by adjusting the inflatable seal 3 is in its open state, the annulus is 48 in to the canal axis A. axial direction at the level of the terminal space 310 or lies in the radial direction to the channel axis the clamping space 310 across from.

In 3C and 3D is the rope 8th in its starting position as it is referring to 3A and 3B has been described in which there is the annulus 48 runs through and thus the terminal space 310 opposite in the radial direction.

One beforehand on the main body 2 drawn, tubular film that is in 3C-D is not shown, is located between the clamping device 3 and insertion bracket 4th .

If the user pulls the pulling device in this position 5 activated and the pneumatic slide 51 shifted, the rope is 8th by the tensile force (F ⁺ ) in the circumferential direction UR1 pulled and thereby tied up. The rope 8th here, as explained, gradually enters the terminal space 310 over, the tubular film equally together with the rope 8th in the terminal room 310 is pulled.

The user then operates the pulling device again 5 to the pneumatic slide 51 back to its original position. The one during the displacement of the pneumatic slide 51 on the rope 8th exerted opposite force (F ^- ), ie the compressive force, pushes the rope 8th through the opening back into the annulus 48 , making the rope 8th , as already explained, gradually back into the annulus 48 transgresses.

The connection device according to the invention 1 is suitable for connecting various types of containers, such as big bags or barrels.

4A and 4B show a variant of the connection device according to the invention 1 , which is intended for connecting big bags, with 4A from 4B differs in that in 4A the insertion bracket 4th maximum to the main body 2 has pulled up and in 4B the opposite case is shown in which the introducer 4th from the main body 2 is maximally removed.

In the 4A and 4B shown variant of the connection device 1 is particularly via its mounting flange 22nd mounted on a facility. The facility can be a production facility or a silo from which the product is to be filled into the big bag or into which the big bag is to be emptied. The assembly of the connection device 1 takes place, for example, via screw connections.

The variant of the connection device 1 includes a side intervention 7th that on the base body 2 is trained.

The side intervention 7th serves to put one in the terminal room 310 to remove clamped film residue, which comes from a previously connected tubular film. The side access enables the removal of the remaining film without contamination 7th attaching a foil bag or preferably an endless tubular film.

The user can remove the endless tubular film in sections from the side engagement 7th pull off and thereby into the base body 2 through the side engagement 7th intervene through to the remainder of the film after opening the clamping space 310 from the main body 2 to be pulled out and to be enclosed in the peeled-off endless tubular film by a first closure. The endless tubular film can then be tied off again using a second fastener.

To dispose of the film residue, the endless tubular film is cut through between the first and second closure.

The side intervention 7th can preferably be closed by a lid which ensures that no product collects in the lateral engagement.

Furthermore, as an alternative, the connection device according to the invention can be used for emptying barrels. A corresponding device is for example in 5A and 5B shown.

The connection device according to the invention 1 is like in 5A shown on the back of an insulator a arranged. The assembly of the connection device 1 is done by the mounting flange 22nd by means of its screw connections on the back of the isolator a is screwed tight.

In the 5A The device shown also includes a lifting device b that is set up a barrel to be emptied F. lift it up and turn it so that it is on the connection device 1 can be connected. The barrel F. can in the in 5A position shown by releasing a brake d horizontally, ie in the direction of the connecting device 1 be moved. The barrel F. can be offset so far that the front edge of the barrel F. himself in the canal 21 of the Connection device is located. Preferably can in the channel 21 a roll-out seal or inflatable seal 10 (please refer 1A and 5A) be arranged over the edge of the barrel F. can be additionally sealed after connecting the tubular film.

There is a plastic bag in the barrel F. , the outlet of which forms the tubular film to be connected.

The isolator a points on its front, which in 5B shown is glove openings 7a in which a user can intervene and via which the user has one in the clamping device 3 can remove stuck film residue. The isolator a Ergo has such dimensions that the user can handle the gloves 7a required activities in the interior of the isolator a can perform, in particular can reach the barrel connected to the rear.

Since the in 5A and 5B shown isolator the glove openings 7a anyway, it is not necessary to have the basic body 2 the connection device 1 with a side entry, as in 4A and 4B is shown to equip.

The isolator a has a funnel on its underside c into the one in the barrel F. contained powder or granular product can be poured. The funnel c can be connected to one connector c1 For example, it can be connected to a pneumatic conveyor system or a device (e.g. production system or a silo) for forwarding / further processing of the product.

The following is an intended use of the connection device according to the invention 1 referring to 4A , 4B and 5A , 5B explained. The connection of a BigBag or a barrel is basically carried out in the same way for both devices.

In a first step, the introducer holder 4th by activating the guide device 6th proceed in such a way that the insertion bracket 4th from the opening 20a of the main body 2 maximally removed. This is done by actuating the lift cylinder 61 carried out.

It is assumed that the connection of the big bag / barrel F. is not the very first time you connect a container. For this reason, a film residue (not shown), which comes from a previously handled container, closes the opening 20a in the main body 2 by being in the closed terminal room 310 between inflatable seal 3 and mounting flange 23 is clamped in a sealed manner.

The user introduces the new tubular film (outlet BigBag / outlet in the barrel F. contained foil bag) of the currently handled container through the sealing ring 44 through and pulls the new tubular film so far over the base body 2 that they - running over the remainder of the film - the main body 2 covers.

In this state, the user operates the guide device 6th and moves the insertion bracket 4th maximum to the main body 2 approach. This is done by retracting the lifting cylinders.

The sealing lips 47 and 49 strip the tubular film to be connected over the one in the terminal space 310 stuck film residue. When the insertion bracket 4th the maximum to the base body 2 When the moved-up position is reached, the sealing lip presses 47 the tubular film to be connected and the remainder of the film together against the fastening flange 23 . The sealing lip presses in the same way 49 the tubular film and the remainder of the film together against the further fastening flange 24 or the outer surface of the inflatable seal 3 . The position of the insertion holder that has now been reached 4th corresponds to that from 3C and 3D .

The sealing lip 47 and the sealing lip 49 exert such a sealing force on the said foils radially to the channel axis A. that develops a sufficient sealing effect, and thus the channel 21 is sealed against the outside environment.

The next step is the inflatable seal 3 deactivated, ie relaxed, by the valve connection 32 is opened and the gas contained in it flows out. This releases the clamping of the remainder of the film.

The user then removes the remainder of the film by grasping the remainder of the film and from the opening 20a peeled off, the remainder of the film being pulled out from under the new tubular film without losing the sealing effect. This is done with the in 4A and 4B shown device by engaging in the side engagement 7th and at the in 5A and 5B shown device by engaging in the glove grips 7a .

Accordingly, the sealing force is the sealing lip 47 and the sealing lip 49 dimensioned so that on the one hand a seal is guaranteed, but on the other hand the user can pull away the remainder of the film from under the new tubular film to be connected.

In the next step, the user activates the pulling device 5 , whereby the rope the tubular film in the clamping space 310 tied together, as explained above. The tubular film is now located in the clamping space 310 and can by activating the inflatable seal 3 be clamped.

The rope 8th is preferred beforehand by resetting the pulling device 5 from the terminal room 310 removed again, but could also be in the terminal room 310 remain and will only be removed at a later point in time.

Subsequently or before the introduction of the tubular film into the clamping space 310 can the inflatable seal 45 that is in the sealing ring 44 sits, are actuated and thereby the tubular film of the container on the base body 2 be fixed in a sealed manner.

At the in 5A and 5B The user then releases the brake d and moves the barrel F. so far in the canal 21 until the edge of the barrel F. of poetry 10 opposite. The user then activates the seal 10 who then put the tubular film running over the edge of the barrel onto the edge of the barrel F. pressed and additionally sealed.

In this state now reached, the container can either be emptied or filled.

The connected tubular film of the container can then be closed twice by means of two closures and severed between the closures, with the in 5A and 5B The device shown previously applied the brake d again loosened and the barrel into the in 5A The position shown is withdrawn, in which the tubular film between the barrel F. and the connection device 1 is accessible.

The connection device 1 now reaches its initial state.

(Modifications)

The insertion means does not necessarily have to be a rope, but can also be an elastic band that, for example, has a rectangular or round cross-section. Furthermore, as an alternative to the rope, the insertion means can be a chain of rigid elements which are connected to one another in a rotatable manner. Such a chain can be in the annulus 48 for example, be used in such a way that the rigid elements of the in 3B The openings shown extend around the channel axis and the respective elements arranged at the end of the chain are connected to the fastening section via a connecting element 82 or the pneumatically operated slide 51 are connected. When the slide is moved, the rigid elements located at the end of the chain lie next to one another between the openings, with sections of the rigid elements pointing in the direction of the channel axis being located within the clamping space 310 are located.

The clamping device 3 can as in the European patent application EP 3 428 080 A1 be disclosed.

Claims (7)

Connection device (1) for connecting a tubular film to a device, the connection device (1) comprising: a base body (2) which forms a channel (21), the channel (21) extending along a channel axis (A) and ends at an opening in the base body (20a) and opens outwards; a clamping device (3) which runs around the opening of the base body and is set up to clamp the tubular film after being pulled over the base body (2) in a clamping space (310) in such a way that the tubular film is fastened in a sealed manner and a product is between the base body ( 2) and the tubular film can be transferred contamination-free; an insertion means (8) which at least partially surrounds the base body (2) and the tubular film drawn over the base body (2) and both in a circumferential direction (UR1) running around the channel axis (A) and in a circumferential direction (UR2) opposite to the circumferential direction ) is movable in such a way that (i) when moving in the circumferential direction (UR1) it moves radially to the channel axis (A) into the clamping space (310) and thereby transfers the tubular film constricting radially into the clamping space (310), and ( ii) when moving in the opposite circumferential direction (UR2), it is displaced radially to the channel axis (A) out of the clamping space (310); and an annular insertion holder (4) which surrounds the clamping device (3) around the channel axis (A) and has an annular space (48) which the insertion means (8) during the movement in the circumferential direction (UR1) and the movement in the opposite circumferential direction (UR2) at least partially leads; and a pulling device (5) to which a fastening section (81) of the insertion means (8) is attached and which is set up to (i) exert a force (F ⁺ ) on the insertion means (8) in such a way that it causes the movement in the Executes circumferential direction (UR1), and (ii) exerting on the insertion means (8) a force (F ^{- ) opposite to the force (F +} ) in such a way that it executes the movement in the opposite circumferential direction (UR2); wherein the pulling device (5) is set up to apply the force (F ⁺ ) and the opposite force (F ^- ) to the To apply insertion means (8) tangential to the annular insertion holder (4). Connection device (1) according to Claim 1 , wherein a further fastening section (82) of the insertion means (8) is fastened to a fastening device (9) which is provided on the insertion holder (4) in such a way that the insertion means (8) from the fastening device (9) through the annular space (48 ) runs through to the pulling device (5); wherein (i) when the force (F ⁺ ) is applied to the insertion means (8) by the pulling device (5), the insertion means (8) is held on the one hand by the fastening device (9) and on the other hand is pulled by the pulling device (5) in such a way, that it executes the movement in the circumferential direction (UR1) and moves out of the annular space (48) radially to the channel axis (A) into the clamping space (310), and (ii) when the opposite force (F ^- ) is applied to the Insertion means (8) by the pulling device (5) the insertion means (8) is held on the one hand by the fastening device (9) and on the other hand is pressed by the pulling device (5) in such a way that it executes the movement in the opposite circumferential direction (UR2) and is offset from the clamping space (310) radially to the channel axis (A) in the annular space (48). Connection device (1) according to Claim 2 wherein the insertion means (8) is a rope, an elastic band or a chain of rigid elements rotatably mounted to one another, which is pulled and pushed by the pulling device (5). Connection device (1) according to Claim 3 , the rope or the elastic band being fastened on the one hand to the fastening device (82), the base body (2) running completely through the annular space (48) in such a way that it crosses at a crossing section (83), and on the other hand to the pulling device (5) is attached; wherein (i) when the force (F ⁺ ) is applied to the rope or tape by the pulling device (5), the rope or tape is held on the one hand by the fastening device (9) and on the other hand is pulled by the pulling device (5) in such a way that it the movement executes in the circumferential direction (UR1) to such an extent that the junction portion is placed in the terminal compartment (310) (83), and (ii) upon application of the opposing force (F ^-) on the rope or tape by the pulling device (5) the rope or tape is held on the one hand by the fastening device (9) and on the other hand is pressed by the pulling device (5) in such a way that it executes the movement in the opposite circumferential direction (UR2) to such an extent that the intersection section (83 ) is moved out of the terminal space (310) again. Connection device (1) according to one of the Claims 1 to 4th , wherein the pulling device (5) includes a linearly guided pulling element (51), to which the fastening section (81) of the insertion means (8) is fastened, and is designed to apply the force (F ⁺ ) and the opposing force (F ^- ) to exercise the insertion means (8) by displacing the pulling element (51) in a linearly guided manner; and the pulling device (5) is arranged in such a way that the corresponding pulling element (51) can be displaced tangentially to the annular insertion holder (4). Connection device (1) according to one of the Claims 1 to 5 , further comprising: a seal (47, 49) which runs around the base body (2) and is set up to secure a new tubular film in a sealed manner, the seal (47, 49) being arranged and configured in such a way that the new tubular film is attached in such a way that it is pressed onto a tubular film residue clamped in the clamping space, which comes from a previously connected tubular film, and the seal (47, 49) exerts such a sealing force on the new tubular film and the tubular film residue that the Foil residue can be pulled out without losing a sealing effect achieved by the sealing force. Connection device (1) according to Claim 6 , wherein the insertion holder (4) can be moved in the direction of the channel axis (A) by a guide device (6) and the seal (47, 49) is attached to the insertion holder (4) in such a way that when the insertion holder (4) is approached it is attached to the base body (2) brushes the new tubular film over the remainder of the film and thereby exerts the sealing force radially to the channel axis (A) on the new tubular film and the remainder of the film.

Images