EP3360805A1 - Strapping device - Google Patents

Abstract

A strapping device for strapping an object with a belt (4) which can be pulled off a belt roll (5) which can rotate about a rotation axis, comprising a frame (2) with a device (3) for conveying and retracting the belt (4) and a holder (9) with a rotary bearing pin (10) forming the axis of rotation for releasably receiving the tape roll (5), wherein the bearing pin (10) extends horizontally in the working position, the holder (9) being laterally pivotable from the frame (2) to a non-working position, in which the bearing pin (10) is pivoted out of the horizontal position.

Description

The invention relates to a strapping device for strapping an object with a stripable from a rotatable about a rotation axis tape roll comprising a frame with a means for conveying and retracting the tape and a holder with a rotary axis forming the rotatable bearing pin for releasably receiving the roll of tape the bearing pin runs horizontally in the working position.

Such a strapping device is known to serve a packaged goods such as a newspaper stack, a package or the like with a band to wrap around and to tighten. For this purpose, the packaged material is supplied to the strapping device, for strapping it lies on a corresponding work table. The tape is first injected by a means for conveying and retracting along a guide device such as a rotating frame and collected with the free end again, after which the tape is pulled out of the frame and is biased back, so is tightened around the packaged. Subsequently, the usually made of plastic band is cut and welded together, so that it is tightly clamped around the packaged. The actual functioning of such a strapping device is well known.

The tape is withdrawn from a tape roll, which is located in the working position mostly within the frame of the strapping device. The tape roll is hereby arranged in or on a holder and stored there on a rotatable bearing pin. In the working position, that is, when the tape is removed continuously as part of the individual strapping operations, the tape roll is vertical, so that the tape can be pulled upwards. That is, the axis of rotation and consequently the axis of rotation forming bearing pin on which the tape roll is pushed, runs horizontally.

If the tape is removed, the tape roll must be changed. In addition to embodiments in which the roll of tape is accommodated in an immovable holder, therefore, so that the roll change quasi done in the frame, embodiments of strapping devices are known in which the holder is pivotally mounted on the machine frame. To change the holder can be swung out of the machine frame, the bearing pin retains its horizontal orientation. After swinging out of the holder, the empty roll of tape is released and removed from the journal. The new roll of tape is pushed onto the horizontal bearing journals, for which purpose the roll of tape must be raised in a vertical position and attached to the journal. For this purpose, the roller bore is first to be aligned with respect to the journal, after which only the delay can be made. Due to the vertical position of the roll of tape during this process, this is cumbersome, since in particular the bore for the person changing the tape rolls is not necessarily visible, therefore, therefore, the positioning of the tape roll is sometimes difficult relative to the journal sometimes difficult. This also against the background, as a full tape roll has a considerable weight. Also, the Aufschiebevorgang, a pure horizontal movement, due to the weight of the roll of tape associated with a considerable effort. Finally, the roll of tape, since standing vertically with their side roller cheeks, also difficult to grip or handle.

The invention is therefore based on the problem to provide a strapping device, which is improved in contrast and allows easier replacement of a roll of tape.

To solve this problem is provided according to the invention in a strapping device of the type mentioned that the holder is pivotable laterally out of the frame in a non-working position, in which the bearing pin is pivoted out of the horizontal position.

In the case of the strapping device according to the invention, the holder can be pivoted out of the frame to the side in such a way that the bearing journal in this case is pivoted from its horizontal position in the direction of the vertical. He stands in non-working position therefore at an angle to the horizontal, ultimately oblique or maximum vertical thereto. As a result of this positioning of the journal in the non-working position consequently the tape roll for re-placement on the journal is no longer, as before, to hold quasi vertical respectively to position, but also tilted to maximum in the horizontal. This, in addition to easier handling, since the tape roll can be well held and moved on a side, tilted roller cheek and moved, also easier to put on, since the operator always the position of the roller bore is visible, so that he much easier with respect to the Positioning pin can position. In addition, due to the inclination or vertical position of the trunnion, the sliding of the tape roll on the bearing pin is much easier, since this movement is supported by the weight of the tape roll. This slips so, as soon as the bearing pin is threaded into the roller bore, almost automatically on the bearing pin when the bearing pin is sufficiently far from the horizontal pivoted, or can be pushed with very little effort, as supported on its own weight.

Thus, the strapping device according to the invention allows a much simpler role change.

The holder is according to an expedient development of the invention by an angle between 30 ° - 90 ° pivotable, preferably at an angle between 45 ° - 75 °. In the non-working position thus takes the bearing pin and thus the pivoted-out axis of rotation at an angle between 30 ° - 90 ° to the horizontal, preferably between 45 ° - 75 °. The touchdown is thus much more comfortable, not least as a result of the fact that the tape roll, as the horizontal tilted, can be used much easier. Because the operator can then easily engage the tape roll on a side cheek and lift, which is just not possible with a horizontal axis of rotation and thus vertically standing tape roll.

The holder itself can according to a development of the invention comprise a tape roll receiving L- or U-shaped support frame, which is rotatably mounted or pivotally mounted on the frame. The bearing axis is located near the frame outside, the L- or U-shaped support frame extends in the working position virtually in the frame inside. If, according to the invention, the mounting frame is then pivoted outwards, it is virtually open to the operator when it is in the non-working position, so that the tape roll can be inserted into it.

In this case, the support frame from each pair provided frame struts may be formed, wherein in the working position vertically extending strut pair via a connection support on which the bearing pin is arranged, is connected to each other. The support frame thus has an upper pair of struts, these two struts are hinged to the machine frame, so there are pivotally mounted. For this purpose, corresponding bearing journals or the like are provided on these two frame struts, which engage in corresponding bearing mounts on the frame in which they are slidable or roller-mounted. These two frame struts can be connected via a cross strut.

At this upper frame struts are followed by two in the working position vertically extending struts, which are interconnected via a connecting bracket. At the connection support of the bearing pin is arranged with a bearing plate usually associated with him, so there recorded rotatably. These two pairs of struts together with the connecting struts or beams form an L-shaped support frame. Close to the vertical pair of struts still two more struts, which, as well as the upper pair of struts, then also extend by 90 ° to the strut pair running vertically in the working position, so a U-shaped frame is formed. Also, this lower pair of struts, which, like the upper, in the working position is horizontal, can be connected to each other via a connecting strut, said connecting strut, whereupon is still received, at the same time in case of need can also represent a handle for a vorzusehmende Halteresverschwenkung.

According to a first alternative of the invention, the holder itself is pivotable on the operator side between a working and a non-working position, that is to say that the operator who wishes to change the band roll himself carries out the pivoting. For this purpose, a user-operated handle for pivoting the holder between the working and the non-working position can be provided. At this handle, the operator thus attacks when he wants to pivot the holder.

With regard to such a handle, different embodiments are conceivable. According to a first alternative of the invention, the handle can be attached to the support frame itself. The support frame itself thus has a corresponding portion which forms a handle on which the operator can attack with the hand or the foot. It is conceivable, for example, in a U-shaped support frame that an outer connecting strut is provided at the lower in the working position, horizontally extending frame struts, on the one hand connects the frame struts together and stiffened, but on the other hand simultaneously represents the handle to be used. This handle may be positioned to protrude laterally beyond the tape roll on the support frame so that the handle can be operated by either hand or foot. In the working position, this handle can be, for example, with the foot Underrides and the holder together with the empty roll of tape are quasi swung open with his foot. Of course, it can also be attacked by hand. For pivoting into the working position of the foot can also be used by being pressed with him on the handle, so that the holder is pivoted back into the frame, which of course can also be done by hand. In addition, such a handle, for example in the form of a horizontal strut, also serve as a personal protection when it protrudes laterally over the tape roll.

As an alternative to an attachment of the handle, for example to the lower frame struts of a U-shaped support frame, it is of course also conceivable to arrange such a handle at a different position in an L-shaped or U-shaped support frame and guide it so that it is in the access area of Operator in both work and non-work position.

As an alternative to the configuration with the handle frame itself attached to the handle, it is conceivable that the handle is coupled to the support frame pivot lever mechanism or coupled to the support frame pedal mechanism. According to this embodiment, therefore, the support frame is a pivot lever, which is to be operated manually, for example, or a pedal which is to be tread, associated with the pivot lever and the pedal via a corresponding mechanism with the support frame. If the pivot lever is pivoted about a corresponding axis of rotation, its pivotal movement is transmitted via the pivot lever mechanism on the support frame, which is swung out and possibly pivoted again when the pivot lever mechanism again, if this is not otherwise done by directly pressing the bracket. Alternatively, if the pedal is stepped on, that is pressed downward, for example, then this movement is also transmitted via the pedal mechanism to the mounting frame, so that it is pivoted open or pivoted in again, unless this is also done in this case via an immediate actuation of the mounting frame ,

In order to further facilitate the pivoting of the holder in operator-side operation thereof for moving from the working to the non-working position, an expedient development of the invention provides that the holder frame is connected to at least one actuating element which builds up a restoring force when pivoting from the non-working position to the working position , If the support frame is swiveled back into the working position after the roll has been changed, then an actuating element coupled to the holding frame is actuated, which builds up a restoring force during this return pivoting movement. The actuator is therefore a force storage. Shall now for a renewed change of roles, the holder can be pivoted into the non-working position, this lateral swiveling movement is supported by the hereby relaxing adjusting means respectively the restoring force stored there. The operator does not have to swing the entire holding and roller weight aside, but rather he is relieved by the supporting restoring force. When pivoting back into the working position, is working in the quasi against the actuator, which builds up the restoring force as described, the operator is supported by the tape roll itself, since it also works with its own weight against the actuator.

As such an actuator preferably at least one gas spring is used. This is fixed frame side with the cylinder or the piston, while the other part of the gas spring, so the piston or the cylinder, is arranged on the support frame. The respective fasteners are pivotally mounted, since the adjusting element during the pivoting movement performs a relative movement to both the frame and the support frame.

An alternative to the invention has been described above, in which the reversible pivoting between the working and the non-working position takes place on the operator side, and therefore the operator moves the holder. An alternative for this purpose is the use of a motor-driven adjusting device for the automatic pivoting of the holder between the working and the non-working position. According to this alternative, therefore, a servomotor or the like is used, which moves the holder together with empty or full roll of tape between the two positions. This servo motor can attack, for example, in the region of the pivotal mounting of the support frame on the frame, or be coupled via a corresponding movement or pivoting mechanism with the support frame. In any case, it allows automatic pivoting without significant operator interaction.

The motorized adjusting device is preferably associated with a control device with associated operating element for controlling the setting device. The means that the operator can initiate the pivoting movement in one direction or the other only by pressing a button or the like. The control device then controls the motorized control operation until reaching the respective end position.

In a further development of the invention, regardless of whether a user-side or automatic pivoting operation is provided, a locking device for locking the holder in the working position and / or the non-working position can be provided. About this locking device, the holder is locked in the respective position, so it can not solve automatically without opening the locking device from this position. This is on the one hand ensures that the holder always remains in the correct working position, therefore, so the tape can take place undisturbed. If, alternatively or additionally, the non-working position is assigned a locking device, it is ensured that this position is also fixed for the strap change. If the gas spring is already sufficient for locking in the non-working position, then no additional locking device is to be provided. The gas spring can be overridden for pivoting by the weight of the tape roll and a lower effort on the part of the operator.

It is conceivable that the locking device, regardless of whether it is assigned to the working position or the non-employment position, automatically closes upon reaching the working or the non-employment position. It can either be opened manually, ie it must be manually unlocked or released by the operator for pivoting. Alternatively, it is also conceivable that the locking device automatically opens by applying pressure for pivoting. Thus, if sufficiently strong pressed against the support for pivoting or worked on the part of the servomotor, the locking device, such as a latching device, opens automatically and releases the holder. In a corresponding manner, the locking device also snaps back automatically when the respective end position is reached.

Fig. 1

eine Prinzipdarstellung einer erfindungsgemäßen Umreifungsvorrichtung,

Fig. 2

eine Teilansicht der erfindungsgemäßen Umreifungsvorrichtung aus Fig. 1 von der Seite mit in der Arbeitsstellung befindlicher Halterung,

Fig. 3

die Ansicht gemäß Fig. 2 mit in die Nichtarbeitsstellung ausgeschwenkter Halterung,

Fig. 4

die Anordnung aus Fig. 3 in perspektivischer Ansicht von der gegenüberliegenden Seite,

Fig. 5

die Anordnung aus Fig. 4 mit neuer, noch aufzusetzender Bandrolle,

Fig. 6

eine Prinzipdarstellung einer Umreifungsvorrichtung einer weiteren Ausführungsform mit einer Pedalmechanik zum Verschwenken der Halterung, und

Fig. 7

eine Prinzipdarstellung einer erfindungsgemäßen Umreifungsvorrichtung in Teilansicht mit einem motorischen Stellelement zum Verschwenken der Halterung.

Further advantages and features of the details of the invention will become apparent from the embodiments described below and with reference to the drawings. Showing:

Fig. 1

a schematic diagram of a strapping device according to the invention,

Fig. 2

a partial view of the strapping device according to the invention Fig. 1 from the side with the holder in the working position,

Fig. 3

the view according to Fig. 2 with holder pivoted out into the non-working position,

Fig. 4

the arrangement Fig. 3 in a perspective view from the opposite side,

Fig. 5

the arrangement Fig. 4 with new, still aufzusetzender tape roll,

Fig. 6

a schematic representation of a strapping device of another embodiment with a pedal mechanism for pivoting the holder, and

Fig. 7

a schematic representation of a strapping device according to the invention in partial view with a motorized actuator for pivoting the holder.

Fig. 1 shows in the form of a schematic diagram of a strapping device 1 according to the invention, comprising a frame 2 with a frame provided on the device 3 for conveying and retightening a tape 4, which is wound on a tape roll 5 and deducted from this. The device 3 for conveying and re-tensioning the belt comprises corresponding conveying and tensioning means for shooting the belt along a frame 6 and pulling it out of this frame and around a packaged goods 7 to be strapped tighten. Furthermore, a device 8 is provided for cutting and connecting the band ends of the clamped band section, usually in the form of a welding unit. The basic structure and function of such a strapping device is known.

On the frame 2, a holder 9 is further provided for the tape roll 5, which has a rotatably mounted bearing pin 10, on which the tape roll 5 is placed. The tape roll 5 is fixed accordingly, so that it sits firmly on the bearing pin 10 and a bearing plate associated therewith, for which purpose a corresponding, not shown in detail screw holder is provided.

The holder 9 comprising a support frame 11 is arranged pivotably about a pivot axis 12 on the frame 2, so it can be pivoted out of the frame and into the frame. In the working position, the tape roll 5 is in the in Fig. 1 shown, quasi-vertical position within the frame 2, in the non-working position for role change, she is herausgeschwen from the frame.

The basic pivoting operation is the Figures 2 and 3 refer to. Fig. 2 shows the holder 9 in the pivoted working position. Obviously, the tape roll 5 is vertical, that is, that the axis of rotation and thus the bearing pin 10 is horizontal. If the tape 4 is deducted from the tape roll 5, it is to be exchanged, including the holder 9, see the Figures 2 and 3 in the in Fig. 3 shown non-working position is swingable, as indicated by the arrow A in Fig. 2 shown. In this, the bearing pin 10 assumes an angular position to the horizontal, wherein the angle between the bearing pin 10 respectively axis of rotation and the horizontal in Fig. 3 is marked with α. This angle is between preferably at least 30 ° and a maximum of 90 °, in the illustrated embodiment, the angle is about 70 °. In this position, the tape roll 5 can now be removed by releasing the roller fixing 13 from the bearing pin 10 and a new roll of tape 5 are placed.

As the Figures 2 and 3 show the support frame 11 and the bracket 9 is connected to an actuator 14 in the form of a gas spring 15 which is fixed at one end to the frame 2 with the other end to the support frame 11. This actuator 14 respectively the gas spring 15 builds during pivoting of the in Fig. 3 shown non-working position along the arrow B in the in Fig. 2 shown working position on a restoring force that supports the re-pivoting movement along the arrow A in the non-working position. During the pivoting into the working position, the restoring force is built up by compressing the gas spring 15, so it supports the operator when re-swinging.

As in particular the perspective view according to Fig. 4 can be seen, the support frame 11 consists of several frame struts. Shown are two upper frame struts 16, which is pivotally mounted on the frame 2 via corresponding bearing pins 17. The bearing pins 17 are rotatably received in corresponding bearing receivers 18 on the frame 2, for example via sliding or roller bearings. Via a connecting strut 19, the frame struts 16 are connected.

At right angles to two further frame struts 20 are provided, which in the working position (see Fig. 2 ) run vertically. There is an in them Fig. 1 arranged in principle connecting carrier 21, on which in turn the bearing pin 10 is arranged respectively rotatably mounted. The bearing pin 10 is connected to a bearing plate 22, see Fig. 5 on which the tape roll 5 is seated.

The L-shape formed from the frame struts 16 and 20 is supplemented in the example shown via two further frame struts 23 to the U-shape. The frame struts 23 are in turn vertical to the frame struts 20. At the free end of the frame struts 23, a handle 24 is arranged in the form of a cross strut, the two frame struts 23 firmly connects. This handle 24 serves at the same time pivoting of the holder 9 after it can be attacked on her with the foot or by hand to the holder along with the roll of tape, whether they are unfilled or filled, in the appropriate Position about the axes of rotation 12, formed on the bearing pin 17, to pivot. Here, as described, the gas spring 15 is actuated simultaneously.

Now, starting from the in Fig. 4 shown non-working position of the tape roll change done, the roll holder 13, here a screw toggle, unscrewed from the corresponding threaded portion of the journal 10, so that the tape roll 5 is released from the bearing pin 10. It can then be deducted due to the inclination of the journal 10 by a corresponding oblique movement.

As Fig. 5 shows, then a new roll of tape 5, which is filled as shown with tape, placed on the bearing pin 10. Due to the inclination of the journal 10 to the horizontal, this is very easy. Because the inclination causes the tape roll 5 is to keep corresponding obliquely, and no longer, as usual, is to be positioned vertically. That is, the two roller cheeks 25 have to be positioned vertically so far to align the bore 26 of the tape roll 5 with respect to the horizontal bearing pin 10. Instead, according to the invention, the roll of tape 5 due to the inclination of the bearing pin 10 to the horizontal also be positioned obliquely, so that the operator the tape roll 5 readily grab by grasping the front roller cheek 25, align and then put on the bearing pin 10. Also, the operator is a much easier orientation for aligning the roller bore 26 with respect to the journal 10 due to its inclination possible.

Then, if the full roll of tape 5 placed on the bearing pin 10 or this introduced into the roller bore 26, so the tape roll slides virtually by its own weight on the bearing pin 10 itself to the stop on the bearing plate 22. A support of the operator is not required or only to a small extent.

Then, only the roll holder 13 is again screwed onto the bearing journal 10, after which the roll of tape 5 is fixed again.

Finally, the holder 9 from the non-working position back into the in Fig. 2 Now, only the threading of the new tape in the means 3 for conveying and retightening follows, so that the next strapping process can follow.

The holder 9 are, in Fig. 1 only shown in principle, associated with corresponding locking means 27 which make the locking of the holder 9 in the working position and / or the non-working position, so that the holder 9 is fixed in the respective end position and can not be moved unintentionally from this position. These locking devices 27 engage, for example, in the region of the axis of rotation 12, that is to say the bearing of the bearing pins 17 in the bearing receptacles 18. For example, they lock automatically when the working position and / or the non-working position is taken, depending on which position it is assigned, whereby both positions can be locked. These locking devices 27 may be either to be solved by the user, that is, the user must solve them manually before he makes the respective pivoting. But they can also be solved automatically, for example, by sufficiently strong pivoting is initiated, that is, they can be suppressed. The locking means 27 can be realized, for example, by means of a latching pin which engages in a corresponding latching receptacle, or in a similar manner.

Fig. 6 shows in the form of a schematic representation of a partial view of a strapping device 1 according to the invention a further embodiment, in which case only a section of the frame 2 and the holder 9 is shown. The holder 9, on the bearing pin 10, in turn, a tape roll 5 is placed, and which is also supported about a rotation axis 12 pivotally mounted on the frame 2, a pedal mechanism 28 is associated with comprising a pedal 29, for example, to operate with the foot is, as well as a corresponding coupling mechanism 30, the pedal with the bracket. 9 respectively coupled to the support frame 11. If the pedal 29, as shown by the arrow C, pressed down, it is due to the coupling of the pedal movement on the coupling mechanism 30 of the support frame 11 and the bracket 9, as shown by the arrow A, pivoted from the working position to the non-working position , The return movement, for example, again be done by manually or with the foot on the handle 24, which is also provided here, is pressed, which also leads to the pedal mechanism 28 is reset. This means that the operator does not necessarily have to bend over to swivel to grab by hand on the handle 24, but the Aufschwenkbewegung can be done solely by a foot movement and pressing the pedal 29, as well as the return pivoting movement done with the foot can be pressed by the foot 24 on the handle.

Instead of such a pedal mechanism 28 would equally be a pivot lever mechanism conceivable that a correspondingly guided pivot lever that can be grasped by hand, and which is in an elevated position, be provided.

Fig. 7 Finally, shows a further embodiment of a strapping device 1 according to the invention in a similar partial view as in Fig. 6 , that is, that here too only in a section of the frame 2 is shown, on which in turn the holder 9 and the support frame 11 is rotatably mounted about the pivot axis 12 shown only dashed lines. The holder 9 is here associated with a motor control element 31, which acts as an example in the swivel axis 12 in the example shown. This can be actuated or controlled via a control element 32 together with associated control device 33. This adjusting element 31, for example a simple electric motor, now rotates in the corresponding direction, depending on which pivoting movement is desired or required. Here, therefore, the holder 9 is automatically pivoted between the working and non-working position and back. An interaction of the operator, except to operate the control element 32, it does not need here. Likewise, it is not necessary any additional locking devices, since the locking in the respective end position on the then blocked actuator 31, so the servomotor is given.

Instead of the arrangement of the motor control element 31 to respectively in the region of the axis of rotation 12, it is of course also possible to arrange the servo motor elsewhere on the frame side and to couple via a corresponding adjusting mechanism with the holder 9 respectively the support frame 11.

Claims (15)

A strapping device for strapping an object with a belt (4) which can be pulled off a belt roll (5) which can rotate about a rotation axis, comprising a frame (2) with a device (3) for conveying and retracting the belt (4) and a holder (9) with a rotation axis forming the rotatable bearing pin (10) for releasably receiving the tape roll (5), wherein the bearing pin (10) extends horizontally in the working position, characterized in that the holder (9) laterally from the frame (2) in a non-working position is pivotable, in which the bearing pin (10) is pivoted out of the horizontal position. Strapping device according to claim 1, characterized in that the holder (9) is pivotable at an angle between 30 ° - 90 °. Strapping device according to claim 2, characterized in that the holder (9) is pivotable at an angle between 45 ° - 75 °. Strapping device according to one of the preceding claims, characterized in that the holder (9) has a roll of tape (5) receiving L- or U-shaped support frame (11) which is rotatably mounted on the frame (2). Strapping device according to claim 4, characterized in that the support frame (11) consists of paired frame struts (16, 20, 23) is formed, wherein in the working position vertically extending strut pair (20) via a connection support (21) on which the Bearing journal (10) is arranged, connected to each other. Strapping device according to one of the preceding claims, characterized in that the holder (9) on the operator side between the working and the non-working position is pivotable. Strapping device according to claim 6, characterized in that a user-side operable handle (24, 28) for pivoting the holder (9) between the working and the non-working position is provided. Strapping device according to claim 7, characterized in that the handle (24) on the support frame (11) is itself attached, or that the handle is a coupled to the support frame (11) pivoting lever mechanism or coupled to the support frame (11) pedal mechanism (28) , Strapping device according to claim 8, characterized in that on the support frame (11) fixed handle (24) laterally beyond the tape roll (5), so that the handle (24), at least for pivoting into the working position with the foot can be actuated. Strapping device according to one of the preceding claims, characterized in that at least one restoring force during pivoting of the holder (9) from the non-working position to the working position constructive actuator (14) is provided. Strapping device according to claim 10, characterized in that the adjusting element (14) is a gas spring (15). Strapping device according to one of claims 1 to 5, characterized in that a motorized adjusting device (31) is provided for automatically pivoting the holder (9) between the working and the non-working position. Strapping device according to claim 12, characterized in that a control device (33) with associated operating element (32) for controlling the adjusting device (31) is provided. Strapping device according to one of the preceding claims, characterized in that a locking device (27) for locking the holder (9) in the working position and / or the non-working position is provided. Strapping device according to claim 14, characterized in that the locking device (27) automatically closes upon reaching the working and the non-working position and is either manually open, or automatically opens by applying pressure for pivoting.

Images