CN112055761A

CN112055761A - Bale opener for opening compressed fiber bales

Info

Publication number: CN112055761A
Application number: CN201980029506.6A
Authority: CN
Inventors: J·博斯曼
Original assignee: Trutzler Ltd And Joint Venture
Current assignee: Trutschler Group Europe
Priority date: 2018-05-04
Filing date: 2019-03-05
Publication date: 2020-12-08
Anticipated expiration: 2039-03-05
Also published as: DE102018110679A1; BR112020018252A2; EP3788190B1; BR112020018252A8; CN112055761B; EP3788190A1; WO2019211026A1

Abstract

The invention relates to a bale opener (1) for opening a compressed fiber bale (100) arranged in a setting direction (10), having a pick-up unit (12) and a machine frame (11) having a column element (17) at which the pick-up unit (12) is arranged vertically variably indirectly or directly, the pick-up unit being movable in the setting direction (10) such that the pick-up unit (12) can be moved over the fiber bale (100) and in the process can pick up fiber material from the fiber bale (100); the bale opener also has a suction channel (13) extending in the installation direction (10), into which suction air can be introduced together with the fibre material by a suction mechanism (14) and which is covered on the upper side by a cover belt (15); the bale opener also has a belt lifting unit (16), by means of which the cover belt (15) can be lifted partially from the upper side of the suction channel (13). According to the invention, the belt lifting unit (16) is arranged at the pillar element (17), and the suction duct (19) of the suction mechanism (14) extends from the pillar element (17) into the belt lifting unit (16).

Description

Bale opener for opening compressed fiber bales

Technical Field

The invention relates to a bale opener for opening a compressed fiber bale arranged in a setting direction, having a machine frame and a pickup unit, wherein the pickup unit is arranged vertically at the machine frame in a variable manner, and wherein the machine frame can be moved in the setting direction such that the pickup unit can be moved over the fiber bale and can pick up fiber material from the fiber bale, wherein a suction channel extending in the setting direction is provided, into which suction channel suction air can be introduced together with the fiber material by a suction mechanism, wherein the suction channel is covered on the upper side by a cover tape, and wherein a tape lifting unit is provided, by means of which the cover tape can be lifted partially from the upper side of the suction channel.

Background

DE 3637578 a1 discloses a bale opener for opening a compressed fiber bale arranged in a setting direction, which bale opener has a frame in a door-shaped configuration, wherein the frame can be moved in the setting direction and a pickup unit is accommodated in the frame in a vertically variable manner. If the frame travels in the setting direction, the fibrous material can be picked up from the upper side of the fibre bale, wherein a suction channel extending in the setting direction is provided, into which suction air can be introduced together with the fibrous material by the suction mechanism. The suction channel is mounted stationary and the suction wind can be introduced into the suction channel together with the fibrous material, independently of the position of the machine frame in the setting direction.

From EP 0773312 a1, a bale opener for opening a compressed fiber bale arranged in a setting direction is known, in which an air suction channel is arranged on the upper side of a stationary receiving device, into which suction channel suction air is conducted together with the fiber material by a pick-up unit. In order to achieve the introduction of the suction wind and the fiber material over the entire length of the suction channel, a belt lifting unit is used, by which the cover belt can be lifted locally from the upper side of the suction channel, so that the suction wind is introduced into the suction channel together with the fiber material by the belt lifting unit. The belt lifting unit travels together with the pickup unit in such a way that the belt lifting unit is directly coupled to the pickup unit.

Due to the arrangement of the upper side of the suction channel and the constant vertical position of the pick-up unit, a direct transfer of the suction wind together with the fibre material from the pick-up unit into the belt lifting unit is achieved. The vertically constant guidance of the pick-up unit on the upper side requires an expensive construction which is difficult to achieve with frames of the bale opener in the form of a portal or tower construction. If a frame in the form of a gantry is preferred, complex hose guides have to be installed in order to guide the intake air together with the fibre material from the pick-up unit into the belt lifting unit. However, such an air guidance is complicated here and causes unnecessary flow resistance, so that the suction power must be increased accordingly. In the tower structure, the intake air is guided approximately laterally, i.e. approximately horizontally, into the tower and is conducted therein in the direction of the channel running at the base. This results in a non-optimal suction airflow for carrying away the separated fibers.

Disclosure of Invention

The object of the invention is to improve a bale opener having a machine frame, wherein a simple arrangement and embodiment of the belt lifting unit should be provided, by means of which an assembly of the base side of the suction channel can be achieved and a lower flow resistance of the suction air from the pickup unit to the suction channel can be achieved.

This object is achieved in accordance with the preamble of claim 1 in combination with the features of the characterizing portion. Advantageous developments of the invention are given in the dependent claims.

The invention comprises the technical teaching that the frame of the bale opener has a pillar element at which the pickup unit of the bale opener is arranged vertically variably indirectly or directly. An indirect arrangement means that the pickup unit is not suspended directly at the pillar element, but at an intermediate element which itself is mounted directly or indirectly (e.g. via a fixing flange) at the same pillar element. For bale openers of the portal type, such intermediate elements can be horizontally extending fixed profiles, which are mounted on two vertical portal columns enclosing a portal. For tower bale openers, they have a pickup unit cantilevered on one side, which is suspended directly at or in the tower. The machine frame can be moved in a known manner in the direction of arrangement of the fibre bales to be cut (i.e. the fibre bale array) in such a way that the pick-up unit can be moved over the fibre bales and can pick up fibre material from the fibre bales. Furthermore, the bale opener according to the invention likewise comprises, in a known manner, an air suction channel extending in the mounting direction, through which the fibre material separated from the fibre bale by the pick-up unit is transported away from the bale opener by means of suction air to downstream machines, for example heavy metal separators. That is, the suction air and the fibrous material may be directed from the suction mechanism into the suction channel. The suction channel is likewise covered on the upper side in a known manner by a cover tape. The upper side is the side of the suction channel facing away from the base on which the bale opener and the fiber bale are usually arranged. The bale opener also has a belt lifting unit. The belt lifting unit is set up to lift the cover belt locally, i.e. in the region of the belt lifter, from the upper side of the suction channel. This means that the cover tape is on the suction channel on both sides of the tape lift. According to the invention, the belt lifting unit is arranged at the above-mentioned pillar element, i.e. at the side wall of the pillar element facing the base or at the side wall extending generally perpendicular to the base. In this case, the suction duct of the suction device is guided from the pillar element into the belt lifting unit. That is, the strut element is an integral part of directing the fiber air flow from the pickup unit to the suction channel. This aspect helps to keep the size of such an opener small. On the other hand, very stable elements of the bale opener or its frame are used for fiber air flow guidance. A possible hose guide from the pick-up unit into the belt lifting unit is thus dispensed with, and the suction wind can be advantageously guided into the belt lifting unit by the inventive design of the suction mechanism with sections passing through the strut elements. In particular, the minimum required installation space is obtained for the implementation of a bale opener having a frame with a supporting column element. If the machine frame is travelling, the prop element likewise travels parallel to the extension of the suction channel, and the belt lifting unit can be entrained/driven with the movement of the prop element. The structural design of the machine frame and the belt lifting unit thus enables the intake air to be guided within the machine without additional installation space being required for this purpose. The result is a simple construction with minimal installation space requirements. Furthermore, the suction mechanism can be optimized in terms of flow technology, so that a very low flow resistance of the suction air from the pickup unit into the suction channel is achieved. The core idea of the invention is therefore the advantageous arrangement of the belt lifting unit on one side of the pillar element in combination with the likewise advantageous guidance of the intake air directly into the belt lifting unit through the pillar element. The suction mechanism thereby introduces the suction wind with the separated fiber material into the strut element at the upper side and is preferably guided through the strut element from the upper side into the lower region and the side which leaves the strut element enters the suction channel by means of a belt lifting unit arranged at the strut element.

Preferably, the belt lifting unit is arranged on the outside of the prop element facing away from the pickup unit. I.e. the belt lifting unit does not increase the vertical dimension of the prop element. The minimum required installation space for implementing the bale opener with the machine frame is obtained, and the air suction channel is arranged laterally in the travel region of the column element in the mounting direction. Possible hose guiding from the pick-up unit into the belt lifting unit can be dispensed with. The suction wind can be advantageously guided into the belt lifting unit by the inventive design of the suction mechanism with sections passing through the strut elements. If the machine frame is moved, the supporting elements are also moved parallel to the extension of the suction channel, and the belt lifting unit can be moved with the movement of the supporting elements.

Preferably, the frame is constructed in a portal-type structure and comprises, as the above-mentioned pillar element, a first side frame extending vertically and, additionally, a second side frame extending also vertically. The vertical direction can be understood here with reference to a base on which the bale opener or the fiber bale to be cut is placed. In conjunction with the fiber air flow guidance according to the invention, the side frames can be implemented very narrowly, as seen in the installation direction.

It is particularly advantageous if the belt lifting unit has a frame-like frame, at which a lower roller and at least one, preferably two, upper rollers are arranged for lifting and guiding the cover belt. The cover tape is located on the upper side of the suction channel and covers the opening therein. In this case, the suction ducts lead directly from the support element into the interior region of the frame, so that the suction air and the fibrous material can likewise be led from the support element through the suction ducts into the interior region of the frame. The cover belt thus has a polygonal shape in the region of the belt lifting units, preferably a triangular or quadrangular, in particular trapezoidal or rectangular, shape. The cover belt is guided by the frame-type frame such that the cover belt is lifted from the upper side of the suction channel only in the area of the frame-type frame of the belt lifting unit. The design of the suction duct can be designed such that the frame-like frame does not form an open flow region on the upper side of the suction channel, thereby minimizing the secondary air flow into the suction channel or avoiding the secondary air flow into the suction channel, for example, if a seal is used. The frame-like shelf can advantageously be formed by two side elements, which each have the above-mentioned polygonal shape. The mentioned rollers are freely rotatably mounted at their corners and extend between the side elements. The shape of the frame makes it possible to achieve a very simple guidance of the suction ducts into the interior region of the frame with minimal installation space. The suction pipe preferably has a corresponding curvature so as to end with the open end side approximately in the plane of the opening on the upper side of the suction channel. The bending may be supplemented by or replaced by angling or beveling.

Further advantageously, the suction duct can form a mechanical connection between the pillar element and the belt lifting unit, so that the suction duct acts as a catch for the belt lifting unit by a movement of the pillar element in the setting direction. In this case, it is advantageous if the suction pipes are arranged rigidly on the strut elements and if the belt lifting unit has a connection to the suction pipes, it can nevertheless travel along the upper side of the suction channel independently of the machine frame and therefore of the travel movement of the suction pipes. Rigid connections in all spatial directions between the suction ducts of the belt lifting unit, in particular the frame-like support, are therefore not required; however, a mechanical connection is required so that the movement of the machine frame and thus of the suction duct in the setting direction can be transmitted to the belt lifting unit.

In order to achieve a certain decoupling of the suction pipe from the belt lifting unit, the suction pipe has an end-side entrainment frame for the transition into the belt lifting unit, which entrainment frame forms the open end of the suction pipe and is connected to the receiving opening of the belt lifting unit. The connection between the entrainment frame and the receiving opening is not rigidly implemented here. This enables a relative movement of the pillar element and the belt lifting unit with respect to each other to a certain extent, which increases the flexibility of use.

Particularly advantageously, the end carrier frame can be guided vertically into the receiving opening, so that the carrier frame has a vertical mobility in the receiving opening. For example, the upper side of the suction pipe, along which the belt lifting unit is guided on, can have a height offset from the guidance of the machine frame. This height deviation can be compensated by the vertical movability of the entrainment frame at the end of the suction duct in the receiving opening of the belt lifting unit. Unevenness in the travel path of the bale opener can likewise be compensated for in this way, since they have no negative effect on the fiber air stream transport.

Preferably, in both of the last-mentioned solutions, coupled to the receiving opening is a ventilation tube which extends into the suction channel. This enables the suction duct to be designed independently of the shape of the suction channel. The vent tube forms a type of adapter so that the suction channel can be formed standardized, which helps to reduce manufacturing costs.

In addition or alternatively, the belt lifting unit has an adjusting mechanism by means of which the air duct can be adjusted in the vertical direction at the frame rack and/or the moving frame can be adjusted in the transverse direction along the axis of rotation of the roller at the frame rack. This makes it possible to precisely adjust the entrainment frame and thus the air duct guided vertically into it, in particular with regard to the transition into the suction channel. Thus, the suction channel can be preassembled at the base, i.e. relatively independent of the position of the strut element relative to the suction channel. The entrainment frame and the air duct can be oriented by the adjusting mechanism in such a way that the air duct is oriented, in particular, toward the center of the suction air channel formed in the suction air channel, in particular in order to minimize a secondary air flow which can occur between the inner wall of the suction air channel in the suction air channel and the air duct. Last but not least, this has a positive effect on avoiding friction between the snorkel and the suction air duct. After the belt lifting unit has been set up, the carrier frame can be positioned by the adjusting mechanism in a transverse position which corresponds to the configuration of the suction air channel in the suction channel, so that the ventilation tube is sealed with its outlet side as close as possible to the inner wall of the suction air channel. But a seal may be provided as well.

Alternatively or additionally, the belt lifting unit has a horizontal adjusting mechanism (ebeeneinstelvorrichtung) by means of which the belt lifting unit can be adjusted relative to a preferably vertically running suction pipe in the pillar element.

In order to achieve an advantageous guidance of the cover tape when the cover tape is lifted partially from the upper side of the suction channel, it is provided that the lower rollers and/or at least one of the upper rollers have a width adapted to the width of the cover tape. In this case, the respective roller has a larger diameter in the region in the middle in the width direction than in the region on the edge side. In particular, the lower rollers and/or at least one upper roller are designed to bulge. The raised embodiment in particular causes a self-centering of the cover belt over the width of the roller, so that the cover belt does not leave the guide in the lateral direction when the belt lifting unit travels in the setting direction on the suction channel.

A further advantage is achieved if a belt conveyor roller is arranged on the end side of the lower roller, by means of which the belt lifting unit is guided on the suction channel. In this case, the belt conveyor rollers are arranged only on the end side of the lower rollers in order to guide the cover belt. However, the belt conveyor roller is likewise freely rotatable relative to the roller on the underside and is therefore connected in a rotationally fixed manner to the roller for guiding the underside of the cover belt. The belt conveying roller is configured to roll on an upper side of the suction channel and is received at a frame type rack of the belt lifting unit. In the case of two lower rollers, each of which has two belt conveyor rollers arranged on the end side, four belt conveyor rollers are obtained, which are arranged at the frame-like frame of the belt lifting unit and by means of which the belt lifting unit can be made to run on the upper side of the suction channel. The belt conveyor rollers enable a horizontal gap between the lower rollers and the suction channel. According to the invention, the gap allows a clip-free passage of the cover tape, which is particularly advantageous for the life of the cover tape. The belt conveyor roller is freely rotatable relative to the lower roller due to the larger diameter relative to the lower roller and the concomitant different rotational speeds of the belt conveyor roller and the lower roller. The belt conveyor rollers and the associated rollers on the underside can thus be fitted very simply and cost-effectively on the same shaft, which, when present, only has to be mounted at the above-mentioned frame-like shelves. This arrangement reduces the risk of rubbing against the cover tape, which can impair the life of the cover tape.

Particularly advantageously, the lower roller has a first bearing and the belt conveyor roller has a second bearing. The bearing is in particular designed as a rolling bearing. The respective bearings are designed separately from one another and are received on a common shaft. Alternatively, the belt conveying roller may also be supported outside the lower roller by the second bearing, so that the lower roller extends below the belt conveying roller and the second bearing. This facilitates simple assembly, especially on the rest of the belt lifting unit.

For at least one upper roller, provision can be made for the upper roller to have a limiting ring on its end face. The limiting ring is arranged at least on one upper roller in an axially displaceable manner to such an extent that the cover tape is prevented from sliding off the rolling surface of the roller of the tape lifting unit. The restraining ring thus ensures the guidance of the belt lifting unit along the cover belt. Thus, in the present invention, the slip occurs substantially along the axis of rotation of the rollers of the belt lifting unit. In the context of the present invention, excessive means, in particular, that the covering belt is prevented from rubbing, for example at its longitudinal edges, against components of the belt lifting unit which are fixed relative to the belt lifting unit, for example the frame-type shelves described above, and can therefore be subjected to greater wear. This solution therefore also contributes to the durability of the covering strip, in particular during operation.

In this case, the at least one upper roller and the associated limiting ring are preferably mounted rotatably on the shaft by means of a common bearing. This also facilitates simple assembly. Furthermore, the respective rollers and shafts can be manufactured as standard components, which has a favorable effect on the manufacturing costs.

In this case, the axes for at least one upper roller and for a lower roller run parallel to one another and have a polygonal arrangement with one another. In the case of preferably two upper rollers, they preferably have a smaller distance from one another than the lower rollers. Here, the axle for the roller on the upper side and the axle for the roller on the lower side preferably connect the two side elements of the frame rack to each other, whereby the frame rack is advantageously constructed as a rigid structure. The limiting ring fulfills the task of a central guidance of the cover belt on the upper rollers, wherein the guidance of the cover belt is supported by the crowning of the upper rollers and the lower rollers.

Preferably, the limiting ring is arranged in a rotationally fixed manner on the respective at least one upper roller. This facilitates the possibility that all components can be made as standard parts, which can be installed integrally at the remaining belt lifting units in a modular manner.

The receiving opening, which is structurally connected to the frame rack, is located approximately between the rollers on the lower side in the lower region of the frame rack in the horizontal extension. Preferably, coupled with the receiving opening is the above-mentioned air duct, which extends downwards, i.e. in the direction of the base and in the direction of the longitudinal extension of the suction channel, and is thus guided into the suction channel. The receiving opening forms a common component or a common structural unit together with the ventilation pipe.

Particularly advantageously, the suction pipe is detachable, which extends between a section of the suction device in the pillar element and the ventilation pipe with the upper receiving opening. The belt lifting unit can also be detached from the frame.

The frame is advantageously also covered by means of an outer sheet element, wherein the covering can be arranged in particular on the front side.

A further advantage is obtained if a position switch is arranged at the belt lifting unit, which position switch has a contact roller by means of which the travel position of the machine frame and thus of the pick-up unit on the fibre bales in the placement direction can be detected. As a switching element for activating the position switch, a switching element arranged at the suction channel can be used, to which the contact roller can be guided in order to trigger the position switch. For example, in the case of a positioning travel (refrenzfahrt), the gantry can be moved in one direction until a position switch is triggered in order to position the gantry in the positioning direction.

A further advantage is that at the belt lifting unit an electrical coupling is arranged, which is connected with the towline unit of the power and signal connection. This allows power and signal connections to be obtained simply from the stationary terminal box to the frame which can be moved in the installation direction, the power and signal connections being arranged on the side of the suction channel.

The electrical connection can advantageously be arranged at the belt lifting unit by means of a coupling plate which projects beyond the side of the suction channel. Here, for example, a position switch can also be mounted on the connecting plate. The power and signal connection preferably also includes a storage slot in which the tow chain unit is received. Advantageously, the storage tank is located laterally outside the suction channel.

Thus, the belt lifting unit performs a variety of functions. In one aspect, the belt lifting unit is used to lift the cover belt from the upper side of the suction channel. On the other hand, the belt lifting unit is simultaneously used to transfer the suction air from the frame into the suction channel in such a way that the suction duct is arranged in the belt lifting unit. Furthermore, the belt lifting unit serves to receive an electrical connection via which the drag chain unit of the power and signal connection can be coupled to the moving machine frame. Finally, the belt lifting unit is also adapted to receive at least one position switch to detect a travel position of the machine frame in the setting direction.

Drawings

The following description of preferred embodiments of the invention together with further measures for improving the invention are explained further with the aid of the drawings. In the drawings:

figure 1 shows a first perspective view of a bale opener with a belt lifting unit according to the invention,

figure 2 shows a second perspective view of the bale opener,

figure 3 shows a detailed view of the belt lifting unit in a manner arranged at the side frame of the machine frame,

figure 4 shows a detailed view of a frame-type rack with a lifting unit,

figure 5 shows a detailed view of the cover tape guided over the rollers at the upper side of the frame rack,

figure 6 shows a detailed view of the cover tape guided over the rollers on the underside of the frame shelves,

FIG. 7 shows a cross-sectional view of a belt lifting unit, and

fig. 8 shows a detailed view of the belt lifting unit, in which the suction duct merges into the ventilation duct of the belt lifting unit.

Detailed Description

Fig. 1 and 2 show a bale opener 1 for cutting fibre bales 100 on the upper side, which are arranged in a plurality of rows next to one another in an arrangement direction 10 in a placement region 41 on a base 42, in two different perspective views. For cutting the upper side of the fiber package 100, a pick-up unit 12 is used, which is accommodated in a vertically movable manner at the machine frame 11. The machine frame 11 has a first side frame 17 and a second side frame 18, between which two door profiles 43 (door frame profiles) extend, which are arranged at a distance from one another.

The side frames 17 and 18 have rolling rollers (working rollers) 44 and 45, and for guiding the machine frame 11 in the installation direction 10, a slide rail (guide rail) 46 is used on which the rolling roller 44 at the first side frame 17 is guided. The lower rolling roller 45 at the second side frame 18 rolls on a base 42, on which the fibre bales 100 likewise rest and on which the running rails 46 likewise fit.

The pick-up unit 12 has three supporting rollers 47 and two pick-up rollers 48 on the underside, wherein the pick-up rollers 48 are between the supporting rollers 47 and all

rollers

47, 48 run parallel to one another in the transverse direction 49. Before the pick roller 48 is a dirt bar 50. If the

rollers

47, 48 are set in rotation, the picking roller 48 picks up the flocked component from the pressed fibre bale 100 and the fibre fleece is sucked off by the suction device 14 and fed to its further use.

The suction mechanism 14 comprises a suction hood 51, which is located on the upper side of the pickup unit 12, to which a spiral hose 52 is coupled, which is directed vertically upwards. The spiral hose 52 can change its length while the pickup unit 12 travels vertically, and the spiral hose 52 is coupled at the upper side with an air suction duct 53 that introduces suction air into the first side frame 17 at the upper side. Thus, the air suction duct 53 is self-supporting coupled to the upper side of the first side frame 17, and the spiral hose 52 is at the end of the air suction duct 53 in a suspended arrangement. Here, the suction air passes through the first side frame 17 and reaches the reprocessing station together with the fiber pile through the suction passage 13.

Manual control of the bale opener 1 is performed by means of an operating console 54, which is arranged, for example, on the front side of the suction channel 13. The power supply of the bale opener 1 is effected by a terminal box 55, which is located at the same front end of the suction pipe 13. The power supply and signal connections to the movable frame 11 can be established via power and signal connections 38 (which include a tow chain unit 37), wherein the power and signal connections 38 are lateral to the suction channel 13. The electrical connection 36 in the form of a driver forms a movable connection of the drag chain unit 37, and the electrical connection 36 is connected to the belt lifting unit 16, which is connected to the first lateral frame 17 and thus moves together with the movement of the machine frame 11 in the setting direction 10. The belt lifting unit 16 serves to lift the cover belt 15 covering the suction channel 13 on the upper side.

At the outer region of the portal profile 43, a bridging element 56 is arranged which is located on the upper side and extends in the setting direction 10 and at which the pickup unit 12 is accommodated in a suspended manner by means of a pulling device 57.

Fig. 3 shows a detailed view of the belt lifting unit 16 arranged on the outside of the first side frame 17, wherein the covering element of the first side frame 17 is removed. The belt lifting unit 16 runs in the setting direction 10 on the upper side of the suction channel 13, wherein the belt lifting unit 16 has a connection to the first side frame 17, and the belt lifting unit 16 runs together when the first side frame 17 runs in the setting direction 10.

The belt lifting unit 16 serves to partially lift the cover belt 15, which covers the upper side of the suction channel 13 and is guided by the frame-type frame 20 of the belt lifting unit 16. The lifting of the cover belt 15 by the belt lifting unit 16 serves to transmit the suction wind from the pickup unit into the suction channel 13. For guiding the intake air, a suction device 14 is used, which is shown with a further suction pipe 58, which is coupled to the suction pipe 53 according to fig. 1 and 2 in the first side frame 17.

The suction pipe 58 is also located in the first side frame 17 as a component of the suction device 14 and becomes visible due to the removal of the outer covering. The air suction pipe 58 merges into a further air suction pipe 19, which extends from the first side frame 17 into the belt lifting unit 16. For this purpose, the suction duct 19 has a curved shape, and the suction duct 19 opens on the upper side into a entrainment frame 23 which forms an open end of the suction duct 19 and is connected to a receiving opening 24 in or at the belt lifting unit 16. Coupled to the receiving opening 24 on the underside is a ventilation tube which projects into the suction channel 13 and is therefore not visible in this illustration.

For guiding the cover tape 15, a lower roller 21 and an upper roller 22 are used, the

rollers

21 and 22 being received on a frame-type frame 20 forming the base of the tape lifting unit 16.

On the outside of the suction pipe 13, a storage groove 40 is arranged, into which the drag chain unit 37 is inserted. The tow chain unit 37 forms an integral part of the power and signal connection 38 and is coupled with the electrical coupling 36. The electrical coupling 36 is coupled with a coupling plate 39 of the belt lifting unit 16. Thus, the belt lifting unit 16 simultaneously serves to couple the power and signal connection 38 with the moving portion of the bale opener.

At the coupling plate 39 of the belt lifting unit 16 there is also a position switch 34 which can co-act with a switching element arranged at the suction channel 13, so that a signal can be generated by the position switch 34 upon hitting such a switching element. The position of the machine frame 11 with the first side frame 17 in the placement direction 10 can be detected by this signal.

Fig. 4 shows a perspective view of a frame-type shelf 20, which forms the foundation structure with the lifting unit 16. The side elements of the frame rack 20 are approximately trapezoidal in configuration, so that the horizontal spacing of the rollers 22 on the upper side is smaller than the horizontal spacing of the rollers 21 on the lower side in order to guide the cover tape 15. In order to achieve travel of the frame-type shelves 20 on the upper side of the suction channel, a belt conveying roller 25 is arranged on the outside of the lower roller 21. On the upper side of the suction channel, there is a rolling surface on which the belt conveyor rollers 25 can roll. For this purpose, the belt conveyor rollers 25 are rotatably received at the frame stand 20 independently of the lower rollers 21.

On the end side of the upper roller 22, a limiting ring 28 is arranged, which enables the cover belt 15 to be guided and is configured so as to be non-rotatable relative to the upper roller 22.

The lower roller 21 and the upper roller 22 are preferably embodied so as to bulge. Here, the

rollers

21, 22 each have a width adapted to the width of the cover tape. Furthermore, it is preferred that all

rollers

21, 22 have a larger diameter in the middle region than in the edge-side regions in both directions. This causes the cover tape 15 to be guided centrally on the

rollers

21, 22 by means of the drum shape of the rollers and to prevent lateral slipping to some extent.

Fig. 5 shows a sectional view of the frame rack 20 in the region of the rollers 22 on the upper side received on the shaft 31. The shaft 31 forms an integral part of the frame-like shelf 20 and connects the two trapezoidal side parts to each other. On the upper side of the upper roller 22, a section of the cover belt 15 is shown, which is guided on the upper roller 22 shown in section. The upper roller 22 is mounted on a shaft 31 by means of a bearing 29. The limiting ring 28 is located on a bearing 29 in a rigidly arranged manner and is connected in a rotationally fixed manner to the associated upper roller 22. Here, the illustration shows the lateral guidance of the cover tape 15 by the limiting ring 28, wherein the crowning of the upper roller 22 is not visible due to the small diameter change of the middle and outer regions.

Fig. 6 shows a sectional view of the lower roller 21, which is supported on the shaft 30 by means of the first bearing 26. Here, the shaft 30 likewise forms a connection of the two trapezoidal side parts and thus also forms a structural component of the frame 20 with the lifting unit.

On the outside of the lower roller 21, there is a belt conveying roller 25 configured to roll on the upper side of the suction channel 13. In order that the belt conveyor roller 25 can rotate independently of the rotational movement of the lower roller 21, it is freely rotatably received on the same shaft 30 solely by the second bearing 27.

At the front side of the frame rack 20, a position switch 34 is arranged, which has a contact roller 35. The position switch 34 serves to detect the position of the frame 11 of the bale opener 1 in the setting direction 10 in such a way that the contact roller 35 can strike against a contact element, not shown in detail, at the suction channel 13.

Fig. 7 shows a sectional view of the belt lifting unit 16 arranged at the first side frame 17, wherein the belt lifting unit 16 rolls on the upper side of the suction channel 13. The sectional view shows the cover tape 15 turning from the upper side of the air suction channel 13 via the lower roller 21 and the upper roller 22, so that a trapezoidal interior is formed with the frame-type support 20, into which the air suction duct 19 leads. The suction pipe 19 terminates in a entrainment frame 23 which leads into a receiving opening 24. The receiving opening 24 forms an upper component of the air duct 32, which leads into the suction channel 13. If the first side frame 17 now runs, the suction pipe 19 also runs with the first side frame 17. By means of the positive connection between the entrainment frame 23 and the receiving opening 24, the belt lifting unit 16 is also moved together in the setting direction 10, at least in the direction of travel, by the movement of the suction duct 19. Furthermore, the form-fitting connection between the entrainment frame 23 and the receiving opening 24 only in a plane allows a vertical movement of the air suction duct 19 relative to the receiving opening 24 and thus relative to the belt lifting unit 16. This allows deviations in the height profile of the upper side of the suction channel 13 to be compensated for by a movement of the first side frame 17 in the setting direction 10.

Fig. 8 finally shows a detailed view of the design of the receiving opening 24, which surrounds the carrier frame 23 on the outside in a section. The vertical position of the air duct 32 and thus of the receiving opening 24 can be adjusted by means of the vertical adjustment device 33, so that the air duct 32 can also be adjusted on the basis of the suction air channel in the suction channel 13, so that a guidance of the air duct 33 by the rolling movement of the belt conveyor rollers 25 of the frame rack 20 is achieved. On the front side, a cover strip 15 is shown, which partially surrounds the lower roller 21. The suction pipe 19 is also shown in a sectional view, wherein the ventilation pipe 32 is also shown in section.

The end of the ventilation tube 32 which leads into the suction channel 13 is at the left rear of the roller 21 on the lower left side shown here in the direction of the conveyed fiber air stream or suction wind according to fig. 7 and 8. The ventilation tube 32 is preferably received in the suction channel 13 by means of its end pointing in this direction in the same region behind the roller 21 on the left in fig. 7 and 8. Advantageously, this end is sealingly received by means of a seal 59, preferably formed by means of a brush. The seal 59 advantageously bears sealingly against all of the inner side of the suction channel 13 facing the ventilation duct 32 and against the inner side or underside of the cover tape 15 facing the seal.

The seal 59 can also be eliminated because the suction wind flows to the left in fig. 7 and 8, and therefore there is less concern that fibrous material will adhere at the transition between the breather pipe 32 and the suction channel 13.

Furthermore, the air duct 32 can be designed such that, although the cover tape 15 is turned from the generally rectangular cross section with respect to the inner shape of the entrainment frame 23 or the air suction duct 19 at its end facing the air duct 32 in the direction of the preferably and substantially octagonal cross section of the air suction channel 13, the cross-sectional area of the air duct is unchanged. Thereby reducing the flow resistance of the breather tube 32 and the risk of fibrous material adhering in the breather tube 32. If the face of the snorkel 32 that is used to divert the flow of fibrous air or suction air towards the suction channel 13 is curved, this also reduces the risk of fibrous material sticking.

The embodiments of the present invention are not limited to the preferred embodiments described above. But rather a modified embodiment is conceivable which uses the solution shown even in the case of fundamentally different designs. All the features and/or advantages, together with details of construction or spatial arrangement, which are evident from the claims, description and drawings, are essential to the invention, both individually and in various combinations.

List of reference numerals

1 bale opener

10 direction of arrangement

11 frame

12 pick-up unit

13 air suction channel

14 suction mechanism

15 cover belt

16-belt lifting unit

17 first side frame

18 second side frame

19 air suction pipe

20 frame type frame

21 lower side roller

22 upper side roller

23 drive frame

24 receiving opening

25 belt conveying roller

26 first bearing

27 second bearing

28 confinement ring

29 bearing

30-shaft

31 axle

32-type breather pipe

33 vertical adjusting device

34 position switch

35 contact roller

36 electric connection

37 drag chain unit

38 power and signal connection

39 coupling plate

40 storage tank

41 placement area

42 substrate

43 door type profile

44 rolling roller

45 rolling roller

46 slide rail

47 support roller

48 pick-up roller

49 transverse direction

50 dust rod

51 suction hood

52 spiral hose

53 air suction pipe

54 operating table

55 terminal box

56 bridging element

57 traction device

58 air suction pipe

59 sealing part

100 fiber bag

Claims

1. A bale opener (1),

for opening a pressed fibre bale (100) arranged in an arrangement direction (10), and

it has

-a pick-up unit (12),

-a frame (11) which frame is provided with a plurality of rollers

Having a pillar element (17) at which the pickup unit (12) is vertically variably arranged indirectly or directly, and

can travel along the installation direction (10) such that

Said pick-up unit (12) being able to drive through said fibre package (100), and

-being able to pick up fibre material from the fibre bale (100),

-a suction channel (13) extending in the seating direction (10),

the suction wind together with the fiber material can be guided into the suction channel by a suction mechanism (14), and

the suction channel is covered on the upper side by a cover tape (15), an

A belt lifting unit (16) by which the cover belt (15) can be partially lifted from the upper side of the suction channel (13),

it is characterized in that the preparation method is characterized in that,

the belt lifting unit (16) is arranged at the pillar element (17), and

-an air suction duct (19) of the suction mechanism (14) is guided from the pillar element (17) into the belt lifting unit (16).

2. Bale opener (1) according to claim 1, characterized in that the belt lifting unit (16) is arranged on the outside of the column element (17) facing away from the pickup unit (12).

3. Bale opener (1) according to claim 1 or 2, characterized in that the frame (11) is configured in a door-shaped structure and comprises

A first side frame (17) extending vertically, which forms the pillar element (17), and

a second side frame (18) extending vertically.

4. Bale opener (1) according to one of the preceding claims,

the belt lifting unit (16) has a frame-type frame (20) on which a lower roller (21) and at least one upper roller (22) are arranged for lifting and guiding the cover belt (15), and

the air suction duct (19) leads from the strut element (17) into the interior region of the frame-type frame (20).

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

Has a width matching the width of the cover tape (15), and

a larger diameter in the region located in the middle in the width direction than in the region located on the edge side.

6. Bale opener (1) according to claim 5, characterized in that the lower roller (21) and/or the at least one upper roller (22) are/is of a bulged configuration.

7. Bale opener (1) according to any of claims 4 to 6, characterized in that a belt conveyor roller (25) is arranged in each case at the end side of the lower roller (21), which is designed to guide the belt lifting unit (16) on the suction channel (13).

8. Bale opener (1) according to claim 7,

the lower roller (21) has a first bearing (26) and the belt conveyor roller (25) has a second bearing (27), and

the respective bearings (26, 27) are separate from each other and are received on a common shaft (30).

9. Bale opener (1) according to any of claims 4 to 8,

at the end side of the at least one upper roller (22), the associated limiting ring (28) is arranged so as to be displaceable in the axial direction at most to such an extent that an excessive slipping off of the cover belt (15) from the running surface of one of the rollers (21, 22) of the belt lifting unit (16) is prevented.

10. Bale opener (1) according to claim 9, characterized in that the at least one upper roller (22) and the respective limiting ring (28) are rotatably supported on a shaft (31) by means of a common bearing (29).

11. Bale opener (1) according to claim 9 or 10, characterized in that the limiting ring (28) is arranged at the at least one upper roller (22) in a relatively non-rotatable manner.

12. Bale opener (1) according to one of the preceding claims, characterized in that the air suction duct (19) forms a mechanical connection between the pillar element (17) and the belt lifting unit (16), such that the air suction duct (19) forms a catch of the belt lifting unit (16) by a movement of the pillar element (17) in the seating direction (10).

13. Bale opener (1) according to claim 12, characterized in that the air suction pipe (19) for the transition into the belt lifting unit (16) has an end-side entrainment frame (23) which has an end-side entrainment frame

Forming an open end of said suction duct (19), and

is connected to a receiving opening (24) of the belt lifting unit (16).

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

Is guided into the receiving opening (24) from the vertical direction, and

-having a vertical movability in the receiving opening (24).

15. Bale opener (1) according to claim 13 or 14, characterized in that a ventilation tube (32) is coupled to the receiving opening (24), which ventilation tube extends into the suction channel (13).

16. Bale opener (1) according to claim 15, characterized in that the belt lifting unit (16) has an adjusting mechanism (33) by means of which it is possible to adjust the belt tension

-the ventilation pipe (32) can be adjusted in a vertical direction on the frame-type shelf (20), and/or

The carrier frame (23) can be adjusted in the transverse direction on the frame-like support (20).