EP3788190A1

EP3788190A1 - Bale opener for opening pressed fiber bales

Info

Publication number: EP3788190A1
Application number: EP19714097.3A
Authority: EP
Inventors: Johannes Bossmann
Original assignee: Truetzschler GmbH and Co KG
Current assignee: Truetzschler Group SE
Priority date: 2018-05-04
Filing date: 2019-03-05
Publication date: 2021-03-10
Anticipated expiration: 2039-03-05
Also published as: BR112020018252A8; WO2019211026A1; BR112020018252A2; DE102018110679A1; EP3788190B1; CN112055761B; CN112055761A

Abstract

The present invention relates to a bale opener (1) for opening pressed fiber bales (100) placed in a placement direction (10), the bale opener comprising a removing unit (12) and a machine frame (11), which has a pillar element (17), on which the removing unit (12) is indirectly or directly arranged in such a way that the height of the removing unit can be varied, the removing unit being movable in the placement direction (10) such that the removing unit (12) can be moved over the fiber bales (100) and, in the process, fiber material can be removed from the fiber bales (100), and comprising a suction-air channel (13) which extends in the placement direction (10) and into which the suction air together with the fiber material from a suctioning device (14) can be introduced and which is covered at the top by a covering belt (15), and comprising a belt-lifting unit (16), by means of which the covering belt (15) can be locally lifted from the top side of the suction-air channel (13). According to the invention, the belt-lifting unit (16) is arranged on the pillar element (17), and a suction-air shaft (19) of the suctioning device (14) extends from the pillar element (17) into the belt-lifting unit (16).

Description

Bale opener for opening pressed fiber bales

The invention relates to a bale opener for opening pressed and erected in an erection fiber bale, with a machine frame and with a pickup unit, wherein the pickup unit is vertically adjustable on the machine frame and wherein the machine frame is movable in an installation direction, so that the fiber bales are traversable with the pickup unit and fiber material is detachable from the fiber bales, wherein a suction air passage extending in the erecting direction is provided, into which the suction air with the fiber material can be introduced from a suction device, wherein the suction air passage is covered with a cover tape on top, and wherein a Bandhebeeinheit is provided with the cover strip can be lifted locally from the top of the suction air duct.

From DE 36 37 578 A1 a bale opener for opening pressed and set up in a Aufstellrichtung fiber bale is known, and the bale opener has a machine frame in a gantry design, wherein the machine frame is movable in the installation direction, and the pickup unit is vertically adjustable on the machine frame added. If the machine frame moves in the installation direction, then fiber material can be removed from the upper side of the fiber bales, wherein a suction air duct extending in the installation direction is provided, in which the suction air can be introduced with the fiber material from a suction device. The suction air duct is installed dormant, and the suction air can be introduced with the fiber material, regardless of the position of the machine frame in the direction of installation in the suction air duct.

EP 0 773 312 A1 discloses a bale opener for opening pressed fiber bales erected in an erecting direction, and the suction air duct is installed on the upper side on a stationary receiving device, wherein the suction air with the fiber material is introduced from the pickup unit into the suction air duct. To over the entire length of the suction air duct with the introduction of the suction air To enable the fiber material, a band lifting unit, with a masking tape can be raised locally from the top of the suction air duct to initiate the suction air with the fiber material in the suction air channel via the Bandhebeeinheit. The Bandhebeeinheit moves with the pickup unit by the Bandhebeeinheit is directly coupled to the pickup unit.

Due to the top-side arrangement of the suction air duct and the constant height position of the pickup unit, a direct transfer of the suction air with the fiber material from the pickup unit into the band lifting unit is made possible. The constant height, top-side management of the pickup unit requires a complex construction, which is not readily feasible for machine frames of bale openers in portal or tower construction. If a gantry-type machine frame is preferred, expensive hose guides must be installed in order to guide the suction air with the fiber material from the pickup unit into the belt lifting unit. However, such air ducts are complicated and cause an unnecessary flow resistance, so that the suction power must be increased accordingly. In the case of the type of construction, the suction air is, as it were, led sideways, ie approximately horizontally, into the tower and forwarded there in the direction of a channel running on the floor. This leads to a non-optimal suction air flow for transporting the detached fibers.

The object of the invention relates to the improvement of a bale opener with a machine frame, a simple arrangement and execution of a Bandhebeeinheit should be provided with a bottom-side mounting of Saugluftkanals is possible and with a lower flow resistance of the suction air can be achieved by the pickup in the suction air duct can.

This object is achieved on the basis of a bale opener according to the preamble of claim 1 in conjunction with the characterizing features. Advantageous developments of the invention are specified in the dependent claims. The invention includes the technical teaching that the machine frame of a bale opener has a pillar element on which a pickup unit of the bale opener is arranged directly or indirectly adjustable in height. Arranged indirectly means that the pickup unit is not suspended directly on the pillar element but on an intermediate element, which in turn is attached directly or indirectly (for example via fastening flanges) to the same pillar element. In a portal-style bale opener, such an intermediate element could be a horizontally extending attachment profile that is attached to both the gantry portal enclosing the portal vertically. In a tower bale opener, which has a cantilevered pickup unit, the pickup unit would be suspended directly on or in the tower. The machine frame is in a known manner in the installation direction of the abzufräsenden fiber bales (ie the fiber bale show) is movable, so that the fiber bales are run over with the pickup unit while fiber material can be removed from the fiber bales. Furthermore, the bale opener according to the invention also comprises, in a known manner, a suction air channel extending in the installation direction, via which the fiber material detached from the fiber bales by the pickup unit is transported away from the bale opener by means of suction air to downstream machines such as a heavy metal separator. Ie. In the suction air duct suction air with the fiber material from a suction device can be introduced. The suction air duct is also covered on the top side in a known manner with a cover strip. The top is the side facing away from the bottom of the suction air duct, on which the bale opener and the fiber bales are usually placed. The bale opener also has a band lifting unit. This is arranged to lift the masking tape locally, ie in the area of the belt lifter, from the upper side of the suction air duct. This means that the cover strip rests on both sides of the tape lifter on the suction air duct. According to the invention, the band lifting unit is arranged on the abovementioned column element, that is to say on a side wall of the column element which faces the floor or which is usually perpendicular to the floor. A suction air duct of the suction device is from the column element in the Bandhebeeinheit led into it. Ie. the column element is part of the fiber air flow guide from the pickup unit to the suction air duct. This helps to keep the size of such a bale opener low. On the other hand, a very stable element of the bale opener or its machine frame is used for fiber air flow guidance. This eliminates any hose guides from the pickup unit into the band lifting unit, and the suction air can be advantageously guided into the band lifting unit by the inventive design of the suction device with a section through the column member. In particular, there is a minimum necessary space for the execution of the bale opener with a machine frame with column element. Moves the machine frame, so also moves the column member parallel to the extension of the suction air duct, and the Bandhebeeinheit can be carried along with the movement of the column member. The structural design of the machine frame and the Bandhebeeinheit thus allows a masch inen internal leadership of the suction, without requiring additional space would be required. The result is a simple construction with a minimum required space. In addition, the suction device can be fluidly optimized so that there is a very low flow resistance of the suction air from the pickup unit into the suction air channel inside. The core idea of the invention is therefore an advantageous arrangement of the band lifting unit on one side of the column element in conjunction with an equally advantageous guidance of the suction air through the column element directly into the band lifting unit. The suction device introduces the suction air with the detached fiber material on the upper side in the column element, is guided by the column member preferably from an upper side to a lower portion and enters from the side of the column member in the arranged on the column element Bandhebeeinheit in the suction air channel.

The band lifting unit is preferably arranged on an outer side of the column element facing away from the pickup unit. Ie. the band lifting unit does not increase the vertical dimension of the column member. This results in a minimal necessary space for the execution of the bale opener with a machine frame, and the Suction air duct is located in the lateral arrangement of the travel range of the column element in the installation direction. It can account for any hose guides from the pickup unit in the band hebeein unit into it. The suction air can be advantageously guided by the inventive design of the suction device with a section through the column member through in the Bandhebeeinheit. Moves the machine frame, so also moves the column member parallel to the extension of the suction air duct, and the Bandhebeeinheit can be carried along with the movement of the column member.

Preferably, the machine frame is formed in a gantry design and comprises, as the aforementioned pillar member, a vertically extending first side cheek and in addition a likewise vertically extending second side cheek. Perpendicular is to be understood in relation to the ground on which the bale opener is placed or the fiber bales to be scoured are placed. In conjunction with the fiber air flow guide according to the invention, the side cheeks, seen in the installation direction, are made very narrow.

Particularly advantageously, the band lifting unit has a frame on which lower-side rollers and at least one, preferably two upper-side rollers for raising and guiding the cover band are arranged. The masking tape is located on the top of the suction air duct and covers an opening there. In this case, the suction air duct is guided out of the column element directly into the inner region of the frame, so that the suction air can be guided with the fiber material from the column member through the suction air shaft in the inner region of the frame. Thus, in the region of the band lifting unit, the cover band has a polygonal shape, preferably in the form of a triangle or quadrilateral, in particular a trapezoid or a rectangle. The cover strip is guided over the frame so that a lifting of the cover strip from the top of the suction air duct only in the region of the frame of the Bandhebeeinheit takes place. The design of the suction air shaft can be provided in such a way that, in conjunction with the frame, there is no open flow region on the upper side of the suction air channel, whereby a secondary air flow in the suction air channel is minimized or avoided, for example, by using a seal. The frame can be advantageously formed from two side elements, each having the aforementioned polygonal shape. In the corners of said rollers are mounted freely rotatable and extend between the side elements. This shape of the frame allows a very easy to lead the suction air shaft into the interior of the frame with minimal space. The suction air duct preferably has a corresponding curvature in order to end with an opening end side approximately in the plane of the opening on the upper side of the suction air duct. The curvature can be supplemented by corners or bevels or replaced by them.

With further advantage, the suction air duct can form a mechanical connection between the pillar element and the band lifting unit, so that the suction air duct serves as a driver of the band lifting unit with a movement of the pillar element in the erecting direction. It is advantageous if the suction air duct is rigidly arranged on the column member and the band lifting unit, although having a connection with the suction air duct, but can move independently of the movement of the machine frame and thus the Saugluftschachtes on top of the suction air duct. Thus, a rigid connection in all directions between the Saugluftschacht Bandhebeeinheit, in particular the frame, is not necessary, however, a mechanical connection is required insofar as that the movement of the machine frame and thus the Saugluftschachtes can be transmitted in the Aufstellrichtung on the Bandhebeeinheit.

In order to achieve a certain decoupling of the suction luftsch achtes for Bandhebeeinheit, the suction air duct for the transition into the Bandhebeeinheit a Endident Mitnehmerrahmen, which forms an open end of the Saugluftschachtes and is in communication with a receiving opening of the Bandhebeeinheit. The connection between the driver frame and the receiving opening is not rigid. This allows a certain amount of relative movement of the column member and Bandhebeeinheit to each other, which increases the versatility.

With particular advantage, the end-side driver frame can be guided out of a vertical into the receiving opening, so that the driver frame has a height mobility in the receiving opening. For example, the top of the Saugluftschachtes on which the Bandhebeeinheit is guided along, have height deviations for guiding the machine frame. These differences in height can be compensated in the vertical mobility of the driver frame at the end of the suction air shaft in the receiving opening of the band lifting unit. This also makes it possible to compensate for unevenness in the path of the bale opener, since they do not affect the fiber air flow transport negative.

Preferably, in the case of the two last-mentioned solutions, a snorkel joins the receiving opening, which snorkel extends into the suction air channel. This makes it possible to design the suction air duct regardless of the shape of the suction air duct. The snorkel forms a kind of adapter, so that the suction air duct can be formed standardized, which helps reduce the manufacturing costs.

Additionally or alternatively, the band lifting unit has an adjusting device with which the snorkel in a height direction on the frame and / or the carrier frame in a transverse direction along the axes of rotation of the aforementioned rollers on the frame is adjustable or are. This makes it possible to precisely adjust the driver frame and thus the snorkel guided vertically therein, in particular with regard to the transition into the suction air duct. Thereby For example, the suction air duct may be mounted in advance on the ground, and relatively independent of the position of the column member with respect to the suction air duct. With the adjustment driver frame and snorkel can be aligned so that the snorkel is aligned in particular to the center of a Sauglufttunnels formed in the suction air duct, in particular to minimize a secondary air flow, which may result between the inner wall of the suction air duct in the Sauglufttunnel and the snorkel. Last but not least, this has a favorable effect on the avoidance of friction between the snorkel and the suction air tunnel. After the band lifting unit is set up, the driving frame can be brought into a transverse position with the adjusting device, which corresponds to the formation of the suction air tunnel in the suction air duct, so that the snorkel seals with its output side as possible against the inner wall of the Sauglufttunnels. But it can also be provided a seal.

Alternatively or additionally, the band lifting unit has a level adjustment device with which the band lifting unit can be adjusted with respect to the preferably vertical suction air shaft in the column element.

In order to achieve an advantageous guidance of the cover strip during local lifting off from the upper side of the suction air duct, it is provided that the lower-side rollers and / or the at least one upper-side roller have a width which is adapted to the width of the cover strip. In this case, the respective roller in a widthwise middle region has a larger diameter than in peripheral areas. In particular, the underside rollers and / or the at least one upper-side roller are / are crowned. In particular, the crowned design leads to a self-centering of the cover strip over the width of the rollers, so that the cover strip does not run out laterally from the guide when the tape lifting unit moves in the direction of installation above the suction air duct.

A further advantage is achieved if at the end sides of the lower side rollers each a belt carriage roller is arranged with which the Bandhebeeinheit on the Suction duct is guided. The tape carriage rollers are arranged only on the end sides of the underside rollers for guiding the cover strip. However, the tape carriage rollers are also freely rotatable relative to the underside rollers and thus not rotatably connected to the underside rollers for guiding the cover strip. The tape carriage rollers are designed to roll on top of the suction air duct and received on the frame of the Bandhebeeinheit. In two underside rollers, each with two ends arranged band carriage rollers, four tape carriage rollers, which are arranged on the frame of the band lifting unit and with which the band lifting unit can move on top of the suction air channel. The tape reel wheels allow the realization of a horizontal gap between the lower side rollers and the suction air duct. This gap allows according to the invention a clamping-free passage of the cover strip, which benefits the service life of the cover strip in particular. That the tape carriage rollers are freely rotatable relative to the underside rollers, lies in the larger diameter with respect to the lower side rollers and, consequently, in the resulting different speeds of the belt carriage rollers and the lower side rollers. As a result, tape carriage roll and associated lower side roller can be very easily and inexpensively mounted on one and the same axis, which only has to be attached to the aforementioned frame in the presence. This arrangement reduces the risk of friction with the cover strip, which could affect its life.

With particular advantage, the lower side rollers have first bearings and the belt carriage rollers second bearings. The bearings are designed in particular as rolling bearings. The respective bearings are formed separately from each other and received on a common axis. Alternatively, it is also possible to store with second bearings, the tape carriage rollers on an outer side of the lower-side rollers, with the lower-side rollers thus extend under the tape carriage rollers and the second bearing inside. This promotes the ease of mounting, especially on the other band lifting unit. For the at least one upper-side roller can be provided that it has limiting rings on their end sides. The limiting rings are arranged axially displaceable at most so far on the at least one upper-side roller that excessive slipping of the cover strip is prevented by a running surface of the rollers of Bandhebeeinheit. The limiting rings thus ensure the guidance of the band lifting unit along the cover strip. Slipping takes place in the context of the invention thus substantially along the axes of rotation of the rollers of the band lifting unit. Excessively in the context of the invention means that the cover is prevented in particular from, for example, at its longitudinal edges at fixed with respect to the Bandhebeeinheit components of Bandhebeeinheit, such as to grind the aforementioned frame, and thus be exposed to increased wear. This solution is therefore also the longevity of the cover in particular during operation.

In this case, the at least one upper-side rollers and the associated limiting rings are preferably rotatably mounted on an axle by means of common bearings. This also promotes easy mounting. In addition, the respective role can be made with axis as a standard component, which has a favorable effect on the manufacturing cost.

The axes for the at least one upper-side roller and the axes for the lower-side rollers each extend parallel to each other and have a polygon-shaped arrangement to each other. In the case of preferably two-sided rollers, these preferably have a smaller distance from each other than the underside rollers to each other. The axles for the upper-side rollers and the axles for the lower-side rollers preferably connect two side elements of the frame to one another, whereby the frame is advantageously designed as a rigid structure. The limiting rings perform the task of centrally guiding the cover strip over the upper-side rollers, the guidance of the cover strip being supported by the crowning of the upper-side rollers as well as the lower-side rollers. The limiting rings are preferably arranged in a rotationally rigid manner on the respective, at least one upper-side roller. This promotes the possibility of producing the entire part as a standard part, which can be attached to the other band lifting unit as a whole in a modular manner.

The receiving opening, which is structurally connected to the frame, is located in a horizontal extent in a lower portion of the frame approximately between the lower side rollers. The aforementioned opening is preferably followed by the abovementioned snorkel, which extends downwards, that is to say in the direction of the floor, and in the direction of the longitudinal extent of the suction air channel and thus is guided into the suction air channel. The receiving opening forms with the snorkel a common component or a common unit.

With particular advantage, the suction air shaft, which extends between the portion of the suction device within the column member and the snorkel with the upper-side receiving opening, removable. As a result, the band lifting unit can be detached from the machine frame.

The frame is covered with further advantage by means of outside sheet metal elements, the panel may be provided in particular front side.

Yet another advantage is achieved if a position switch with a contact roller is arranged on the hoisting unit, with which a movement position of the machine frame and thus of the pickup unit can be detected in the installation direction via the fiber bale. As a switching element for activating the position switch can be used on the suction air duct arranged switching elements against which the contact roller can move to trigger the position switch. For example, during a reference run, the machine frame can in one direction Move until the position switch triggers to refer to the position of the machine frame in the installation direction.

With even more advantage, an electrical connection, which is connected to a cable chain unit of a power and signal connection, is located in arrangement on the band lifting unit. This results in a simple way an electrical power and signal connection of a dormant terminal box to the movable in the installation direction machine frame, wherein the electrical power and signal connection is arranged laterally on the suction air duct.

By a side of the suction duct superior connection plate is advantageously created a way to arrange the electrical connection to the Bandhebeeinheit. In this case, for example, the position switch can be attached to the connection plate. The power and signal connection preferably further comprises a storage tray in which the cable chain unit is received. The storage tray is located with advantage in lateral arrangement on the outside of the suction air duct.

Thus, the band lifting unit fulfills several functions. First, it serves to lift the cover strip from the top of the suction air duct. On the other hand, it also serves to transfer the suction air from the machine frame in the suction air duct by the suction air duct is disposed within the Bandhebeeinheit. In addition, the band lifting unit serves to receive the electrical connection, via which the cable chain unit of the power and signal connection can be connected to the moving machine frame. Finally, the Bandhebeeinheit still serves to accommodate at least one position switch for detecting the driving position of the machine frame in the installation direction. Further, measures improving the invention will be described in more detail below together with the description of a preferred embodiment of the invention with reference to FIGS. It shows:

1 is a first perspective view of a bale opener with an inventively designed Bandhebeeinheit,

2 is a second perspective view of the bale opener,

3 is a detail view of the band lifting unit in arrangement on a side cheek of the machine frame,

4 shows a detailed view of a frame of the band lifting unit,

5 shows a detailed view of the guide of the cover strip over an upper-side roller on the frame,

6 is a detailed view of the guide of the cover strip over a bottom role on the frame,

Fig. 7 is a sectional view through the Bandhebeeinheit and

8 shows a detailed view of the band lifting unit with a suction-air shaft in transition into a snorkel of the band-lifting unit.

Figures 1 and 2 show in two different perspective views of a bale opener 1, which serves for the top-side milling of fiber bales 100, which are placed in a set-up area 41 on a floor 42 in a plurality of rows side by side in a set-up direction 10. For milling off the upper side of the fiber bales 100, a pickup unit 12, which is movably received on a machine frame 11 in a height direction, is used. The machine frame 11 has a first side wall 17 and a second side wall 18, and between the two side walls 17 and 18, two spaced apart portal profiles 43 extend.

The side cheeks 17 and 18 have rollers 44 and 45, and for guiding the machine frame 1 1 in the installation direction 10 is a running rail 46, on which the rollers 44 are guided on the first side wall 17. The rollers 45, which are located on the underside of the second side wall 18, run over the bottom 42, on which the fiber bales 100 are placed, and on which also the running rail 46 is mounted.

The pickup unit 12 has on a lower side three support rollers 47 and two pickup rollers 48, wherein the pickup rollers 48 are located between the support rollers 47, and wherein all rollers 47, 48 parallel to each other in a transverse direction 49. If the rollers 47, 48 are rotated, take the pickup rollers 48 flake-like components of the pressed fiber bales 100 and the fiber flakes are sucked through the suction device 14 and fed to their further use.

The suction device 14 comprises a suction hood 51, which is located on the upper side of the pickup unit 12 and to which a vertically upwardly leading spiral tube 52 connects. In a vertical process of the pickup unit 12, the spiral tube 52 may change in length, and the spiral tube 52 is connected on top of a suction air duct 53, which introduces the suction air in the first side wall 17 on the upper side. Thus, the suction air duct 53 is connected self-supporting at the top of the first side wall 17, and the spiral tube 52 is in a hanging arrangement at the end of Saugluftschachtes 53. The suction air passes through the first side wall 17 and passes through a suction air duct 13 together with the fiber flakes a processing station. The manual control of the bale opener 1 via a control panel 54, which is set up by way of example on a head side of the suction air duct 13. The electrical supply of the bale opener 1 via a connection box 55, which is located at the same head of the Saugluftschachtes 13. Via a power and signal connection 38, comprising a cable chain unit 37, an electrical supply and a signal connection with the movable machine frame 1 1 can be produced, wherein the power and signal connection 38 is laterally on the suction air duct 13. An electrical connection 36 in the form of a driver forms the movable connection of the cable chain unit 37, and the electrical connection 36 is connected to a Bandhebeeinheit 16 which is connected to the first side wall 17 and consequently with the movement of the machine frame 1 1 in the installation direction 10 is moved , The Bandhebeeinheit 16 serves to lift a cover strip 15, which covers the suction air duct 13 on the upper side.

At the outer regions of the portal profiles 43 bridge elements 56 are arranged on the upper side, which extend in the installation direction 10 and on which the pickup unit 12 is suspended with traction means 57.

In Fig. 3 is a detail view of the arrangement of the band lifting unit 16 on the outside of the first side wall 17 is shown, wherein lining elements of the first side wall 17 are removed. The Bandhebeeinheit 16 runs on the top of the suction air duct 13 in an installation direction 10 along, wherein the Bandhebeeinheit 16 has a connection with the first side wall 17, and in a method of the first side wall 17 in the installation direction 10 moves the Bandhebeeinheit 16 with.

The Bandhebeeinheit 16 serves for locally lifting a cover strip 15, which covers the top of the suction air duct 13 and is guided over a frame 20 of the Bandhebeeinheit 16. The lifting of the cover 15 by the Band lifting unit 16 serves to transfer the suction air from the pickup unit in the suction air duct 13. To guide the suction air is the suction device 14, the air duct 58 is shown with a further suction, which adjoins the suction air duct 53 as shown in FIG. 1 and FIG. 2 within the first side wall 17.

The suction air shaft 58 as part of the suction device 14 is also still within the first side wall 17 and is visible due to the removed outer panel. The suction air duct 58 merges into a further suction air duct 19, which extends from the first side wall 17 into the band lifting unit 16. For this purpose, the shape of the suction air duct 19 has a curvature, and the suction air duct 19 opens on the upper side into a driver frame 23 which forms an open end of the suction air duct 19 and communicates with a receiving opening 24 in or on the band lifting unit 16. On the underside of the receiving opening 24, a snorkel connects, which projects into the suction air duct 13 and therefore is not visible in this illustration.

To guide the cover strip 15 are underside rollers 21 and top rollers 22, and the rollers 21 and 22 are accommodated on a frame 20, which forms a main body of the band lifting unit 16.

On the outside of the suction air duct 13, a storage tray 40 is arranged, in which a cable chain unit 37 rests. The cable chain unit 37 forms part of a power and signal connection 38 and is connected to an electrical connection 36. The electrical connection 36 is connected to a connection plate 39 of the band lifting unit 16. Thus, the Bandhebeeinheit 16 is also used to connect the power and signal connection 38 to the moving part of the bale opener. On the connecting plate 39 of the band lifting unit 16 is still a position switch 34 which can cooperate with arranged on the suction air duct 13 switching elements, so that with the position switch 34 at a start against such a switching element, a signal can be generated. About this signal, the position of the machine frame 1 1 with the first side wall 17 in the installation direction 10 can be detected.

FIG. 4 illustrates a perspective view of the frame 20 that forms the basic structure of the band lifting unit 16. The side members of the frame 20 are approximately trapezoidal in shape, so that the horizontal distance of the upper side rollers 22 is smaller than the horizontal distance of the lower side rollers 21 for guiding the cover 15. In order to allow the frame frame 20 to run down on the top of the suction air duct, are on the outside arranged on the lower side rollers 21 belt carriage rollers 25. On the top of the suction air duct is a tread on which the belt carriage rollers 25 can roll. For this purpose, the tape carriage rollers 25 are independently of the underside rollers 21 rotatably received on the frame 20.

At the end sides of the upper-side rollers 22 limiting rings 28 are arranged, which allow a guide of the cover 15 and are torsionally rigid with the upper side rollers 22 are formed.

Both the lower-side rollers 21 and the upper-side rollers 22 are preferably crowned. In this case, the rollers 21, 22 each have a width which is adapted to the width of the cover strip. Further, preferably all rollers 21, 22 and in a middle direction in both directions have a larger diameter than in the peripheral areas. As a result, the cover tape 15 is guided centered on the rollers 21, 22 by means of its crowning and is prevented from slipping sideways to a certain extent. 5 shows a sectional view through the frame 20 in the region of an upper-side roller 22, which is accommodated on an axle 31. The axis 31 forms a part of the frame 20 and connects the two trapezoidal side parts together. On the upper side of the upper-side roller 22, a portion of the cover strip 15 is shown, which is guided on the upper-side roller 22 shown cut. The upper-side roller 22 is mounted on the axle 31 by means of bearings 29. The limiting rings 28 are in a rigid arrangement on the bearings 29 and are torsionally rigidly connected to the associated upper-side roller 22. The figure shows a lateral guidance of the cover strip 15 with the boundary rings 28, wherein the crown of the upper side rollers 22 is not visible due to the small diameter variation of the middle and the outer regions.

6 shows a sectional view through a lower-side roller 21, which is mounted with first bearings 26 on the axle 30. The axis 30 also forms a connection of the two trapezoidal side parts and thus also a structural component of the frame 20 of the band lifting unit.

On the outside of the underside roller 21 are belt carriage rollers 25, which are designed to roll on an upper side of the suction air duct 13. Thus, the tape carriage rollers 25 can rotate independently of the rotational movement of the underside rollers 21, they are separately recorded with second bearings 27 on the same axis 30 freely rotating.

At the front of the frame 20, a position switch 34 is arranged with a contact roller 35. The position switch 34 is used to detect the position of the machine frame 1 1 of the bale opener 1 in the installation direction 10 is used by the contact roller 35 can approach against a not shown in detail contact element on the suction air duct 13. 7 shows a sectional view through the band lifting unit 16 arranged on the first side wall 17, wherein the band lifting unit 16 unrolls on the upper side of the suction air channel 13. The sectional view shows the course of the cover strip 15 from the top of Saugluftkanals 13 in deflection over the lower rollers 21 and the upper side rollers 22, so that a trapezoidal interior is formed with the frame 20, in which the suction air duct 19 is guided. The suction air duct 19 ends with a driver frame 23, which is guided into a receiving opening 24. The receiving opening 24 forms an upper part of a snorkel 32, which is guided into the suction air duct 13. If the first side wall 17 now moves, then the suction air shaft 19 is also moved with the first side wall 17. About the positive locking connection between the driver frame 23 and the receiving opening 24 at least in the direction of travel with the movement of the suction air duct 19 and the band lifting unit 16 is moved in the installation direction 10. In addition, the only in the planar plane-closing connection between the driver frame 23 and the receiving opening 24 allows a vertical movement of the Saugluftschachtes 19 relative to the receiving opening 24 and thus relative to Bandhebeeinheit 16. This allows deviations in the height profile of the top of Saugluftkanals 13 from the movement of the first side cheek 17 are compensated in the installation direction 10.

Finally, FIG. 8 also shows a detailed view of the configuration of the receiving opening 24, which surrounds the driver frame 23 on the outside via a section. About a height adjustment 33, the height position of the snorkel 32 and thus the receiving opening 24 can be adjusted so that the snorkel 32 can be adjusted to the Sauglufttunnel in Saugluftkanal 13, so that the leadership of the snorkel 33 is made possible by rolling the belt carriage rollers 25 of the frame 20 , On the front side, the cover tape 15 is shown, which partially wraps around the underside roll 21. Furthermore, the suction air shaft 19 is shown in a sectional view, wherein the snorkel 32 is shown cut. Introduced into the suction air duct 13 end of the snorkel 32 is located in the direction of the transported fiber air flow or the suction air according to Figures 7 and 8 to the left behind the left side roller 21 shown here. The snorkel 32 is accommodated in the same area behind the left in Figures 7 and 8 roller 21 by means of his pointing in this direction end in the suction air duct 13. Advantageously, this end is received sealed by means of a preferably formed by brush seal 59. The seal 59 is sealingly at all the snorkel 32 facing inner sides of the suction air duct 13 and the facing her inner or underside of the cover 15 sealingly.

The seal 59 can also be omitted, since the suction air flows to the left in Figures 7 and 8 and thus adhesion of fiber material at the transition point between snorkel 32 and suction air duct 13 is rather less to be feared.

The snorkel 32 may also be designed so that its cross-sectional area despite its transition from the usually rectangular cross-section with respect to the inner shape of the driver frame 23 and the Saugluftschachts 19 at its end facing the snorkel 32 in the direction of the preferably and substantially 8-cornered cross-section of the suction air duct 13 with masking tape 15 does not change. This reduces the flow resistance of the snorkel 32 and the risk of clinging fiber material in the snorkel 32. If the surfaces of the snorkel 32 for deflecting the fiber air flow or the suction air in the direction of the suction air duct 13 arc-like, this also reduces the risk of adherence of fiber material.

The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, an embodiment of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of execution. All of the claims, the Spelling and the drawings resulting features and / or advantages, including constructive details or spatial arrangements may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

I bale opener

10 installation direction

I I machine frame

12 pickup unit

13 suction air duct

14 suction device

15 masking tape

16 band lifting unit

17 first side cheek

18 second side cheek

19 suction air shaft

20 frame

21 underside roll

22 top roll

23 driver frame

24 receiving opening

25 tape roll

26 first camp

27 second camp

28 limit ring

29 bearings

30 axis

31 axis

32 snorkels

33 height adjustment device

34 position switch

35 contact role

36 electrical connection 37 cable chain unit

38 Power and signal connection

39 Connecting plate

40 storage tray

41 installation area

42 floor

43 Portal profile

44 roller

45 roller

46 track rail

47 back-up roll

48 doffer roller

49 transverse direction

50 grate

51 suction hood

52 spiral hose

53 suction air shaft

54 control panel

55 terminal box

56 bridge element

57 traction means

58 suction air shaft

59 seal

100 fiber bales

Claims

claims

1. Bale opener (1)

• To open pressed and set up in an installation direction (10) fiber bale (100), and

• With

a pickup unit (12),

- A machine frame (11), the

a column element (17), on which the pickup unit (12) is arranged directly or indirectly height-adjustable, and in the installation direction (10) is movable, so

o the fiber bales (100) are traversable with the pickup unit (12) and

o fiber material is detachable from the fiber bales (100),

- A in the erecting direction (10) extending suction air duct (13) into which the suction air with the fiber material from a suction device (14) can be introduced, and

which is covered with a cover strip (15) on the top, as well

- A Bandhebeeinheit (16), with which the cover strip (15) from the top of the suction air duct (13) is locally raised,

characterized in that

• the band lifting unit (16) is arranged on the column element (17) and

A suction-air shaft (19) of the suction device (14) is guided by the column element (17) into the belt lifting unit (16).

2. bale opener (1) according to claim 1, characterized in that the band lifting unit (16) on one of the pickup unit (12) facing away, outside of the pillar member (17) is arranged.

3. bale opener (1) according to claim 1 or 2, characterized in that the machine frame (11) is formed in a gantry design, comprising A vertically extending first side wall (17) which forms the column element (17), and

A vertically extending second side cheek (18).

4. bale opener (1) according to one of the preceding claims, characterized in that

• the Bandhebeeinheit (16) aulgestell a frame (20) on which the lower side rollers (21) and at least one upper side roller (22) for raising and guiding the cover strip (15) are arranged, and

• the suction air shaft (19) of the column member (17) in an inner region of the frame (20) is guided into it.

5. Bale opener (1) according to claim 4, characterized in that the underside rollers (21) and / or the at least one upper-side roller (22)

• has a width that is adapted to the width of the cover strip (15), and

• Have a larger diameter in a widthwise middle area than in peripheral areas.

6. bale opener (1) according to claim 5, characterized in that the underside rollers (21) or at least one upper-side roller (22) is formed crowned / are.

7. bale opener (1) according to one of claims 4 to 6, characterized in that at end sides of the underside rollers (21) each a belt carriage roller (25) is arranged to guide the Bandhebeeinheit (16) on the suction air duct (13) ,

8. bale opener (1) according to claim 7, characterized in that

• the lower side rollers (21) have first bearings (26) and the belt carriage rollers (25) second bearings (27) and • the respective bearings (26, 27) are formed separately from each other and received on a common axis (30).

9. bale opener (1) according to one of claims 4 to 8, characterized in that

• At the end sides of the at least one upper-side roller (22) associated limiting rings (28) are axially displaced at most so far that prevents excessive slipping of the cover strip (15) of a running surface of one of the rollers (21, 22) of the band lifting unit (16) is.

10. bale opener (1) according to claim 9, characterized in that the at least one upper-side roller (22) and the associated limiting rings (28) by means of common bearings (29) are rotatably mounted on an axis (31).

1 1. Bale opener (1) according to claim 9 or 10, characterized in that the limiting rings (28) are arranged rotationally rigidly on the at least one upper side roller (22).

12. bale opener (1) according to any one of the preceding claims, characterized in that the suction air shaft (19) forms a mechanical connection between the column member (17) and the Bandhebeeinheit (16) such that the suction air shaft (19) has a driver of Bandhebeeinheit (16) with a movement of the column member (17) in the erecting direction (10).

13. bale opener (1) according to claim 12, characterized in that the suction air shaft (19) for transition into the band lifting unit (16) has an end-side driving frame (23), the

• forms an open end of the suction air shaft (19) and

• with a receiving opening (24) of the band lifting unit (16) is in communication.

14. bale opener (1) according to claim 13, characterized in that the end-side driving frame (23)

^{• is guided} from a vertical into the receiving opening (24) and

^• in the receiving opening (24) has a height mobility.

15. bale opener (1) according to claim 13 or 14, characterized in that adjoins the receiving opening (24) a snorkel (32) which extends into the suction air duct (13) into it.

16. bale opener (1) according to claim 15, characterized in that the band lifting unit (16) has an adjusting device (33), with the

^• the snorkel (32) in a height direction on the frame (20) is adjustable and / or

^• The driver frame (23) in a transverse direction on the frame (20) is adjustable.