CN112055761B

CN112055761B - Bale opener for opening compressed fiber bales

Info

Publication number: CN112055761B
Application number: CN201980029506.6A
Authority: CN
Inventors: J·博斯曼
Original assignee: Trutschler Group Europe
Current assignee: Trutschler Group Europe
Priority date: 2018-05-04
Filing date: 2019-03-05
Publication date: 2023-05-05
Anticipated expiration: 2039-03-05
Also published as: CN112055761A; DE102018110679A1; BR112020018252A2; EP3788190B1; BR112020018252A8; EP3788190A1; WO2019211026A1

Abstract

The invention relates to a bale opener for opening pressed fibre bales, comprising a picking unit and a frame, wherein the frame is configured to be in a door-shaped structure and comprises a first side frame extending vertically and a second side frame extending vertically, the picking unit is vertically and variably received between the first side frame and the second side frame, and the fibre bales can be arranged between the first side frame and the second side frame, so that the picking unit can drive through the fibre bales and pick up fibre materials; the bale opener further has an air suction channel extending in the direction of arrangement, into which suction air can be introduced together with the fibrous material by the suction means, and which air suction channel is covered on the upper side by the cover tape; the bale opener is also provided with a belt lifting unit, and the cover belt can be locally lifted from the upper side of the air suction channel through the belt lifting unit; the belt lifting unit is arranged on the outer side of the first side frame facing away from the pick-up unit, and the suction pipe of the suction mechanism extends from the first side frame into the belt lifting unit.

Description

Bale opener for opening compressed fiber bales

Technical Field

The invention relates to a bale opener for opening pressed fibre bales arranged in a setting direction, comprising a frame and a pickup unit, wherein the pickup unit is arranged vertically variably at the frame, and wherein the frame can be moved in the setting direction, such that the pickup unit can drive through the fibre bales and can pick up fibre material from the fibre bales, wherein a suction channel is provided which extends in the setting direction and into which suction channel suction wind can be introduced together with the fibre material by a suction mechanism, wherein the suction channel is covered on the upper side by a cover belt, and wherein a belt lifting unit is provided, by means of which the cover belt can be lifted locally from the upper side of the suction channel.

Background

DE 3637578 A1 discloses a bale opener for opening pressed fibre bales arranged in a setting direction, having a frame in a gate-like structure, wherein the frame is movable in the setting direction and a pickup unit is received at the frame in a vertically variable manner. If the frame runs in the setting direction, the fibre material can be picked up from the upper side of the fibre package, wherein a suction channel is provided which extends in the setting direction and into which suction air can be led together with the fibre material by the suction means. The suction channel is stationary, and suction wind can be introduced into the suction channel independently of the position of the frame in the installation direction, together with the fibrous material.

EP 0773312 A1 discloses a bale opener for opening pressed fibre bales arranged in a direction of arrangement, a suction channel being arranged on the upper side of a stationary receiving device, into which suction air is introduced together with the fibre material by a pickup unit. In order to achieve the introduction of suction air and fibrous material over the entire length of the suction channel, a belt lifting unit is used, by means of which the cover belt can be lifted locally from the upper side of the suction channel, so that suction air is introduced into the suction channel together with fibrous material by means of the belt lifting unit. The belt lifting unit travels together with the pick-up unit in such a way that the belt lifting unit is directly coupled to the pick-up 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 suction wind together with fibrous material from the pick-up unit into the belt lifting unit is achieved. The vertically constant guidance of the pick-up unit at the upper side requires an expensive structure which is difficult to achieve for a frame of the bale opener in a gate-type or tower-type configuration. If a gantry in a gate-like structure is preferred, a complex hose guide must be installed in order to guide the suction wind together with the fibre material from the pick-up unit into the belt lifting unit. However, this air guidance is complicated in this case and causes unnecessary flow resistance, so that the suction power must be increased accordingly. In the tower structure, the suction wind is guided into the tower approximately sideways, i.e. approximately horizontally, and is conducted therein in the direction of the channels extending at the base. This results in a less than optimal suction airflow for transporting away the separated fibers.

Disclosure of Invention

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

This object is achieved based on a bale opener according to embodiment 1. In other embodiments, advantageous refinements of the invention are provided.

The invention comprises the technical teaching that the frame of the bale opener has a side frame, at which the pick-up unit of the bale opener is arranged vertically variably indirectly or directly. By indirect arrangement is meant that the pick-up unit is not suspended directly at the side frame, but at an intermediate element which itself is mounted directly or indirectly (e.g. by means of a fixed flange) at the same side frame. For bale openers in a portal configuration, such intermediate elements may be horizontally extending fixed profiles mounted at two side frames vertically circumscribing the portal. For a tower bale opener, it has a picking unit overhanging on one side, which is suspended directly at or in the tower. The machine frame can travel in the direction of placement of the fiber packages to be skived (i.e., the fiber package array) in a known manner, so that the pick-up unit can drive through the fiber packages and can pick up the fiber material from the fiber packages. Furthermore, the bale opener according to the invention likewise comprises in a known manner an air suction channel extending in the direction of placement, 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, such as heavy metal separators. That is, suction air and fibrous material may be introduced from the suction mechanism into the suction channel. The suction channels are also covered on the upper side by a cover tape in a known manner. Here, the upper side is the side of the suction channel facing away from the substrate on which the bale opener and the fibre bales are usually arranged. The bale opener also has a belt lifting unit. The belt lifting unit is designed 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 belt is on the suction channel on both sides of the belt lifter. According to the present invention, the belt lifting unit is disposed at the side frame. The suction pipe of the suction mechanism is guided from the side frame into the belt lifting unit. That is, the side frame is an integral part of guiding the fibre air flow from the pick-up unit to the suction channel. This aspect helps to keep the size of such bale openers small. On the other hand, very stable elements of the bale opener or its frame are used for the fibre air flow guidance. The possible hose guidance from the pick-up unit into the belt lifting unit is thus eliminated, and the suction wind can be advantageously guided into the belt lifting unit by the design according to the invention of the suction mechanism with the section through the side frame. In particular, the minimum required installation space is obtained for implementing a bale opener having a frame with side rims. If the frame is travelling, the side frames likewise travel parallel to the extension of the suction channel, and the belt lifting unit can be driven with the movement of the side frames. The design of the frame and the belt lifting unit thus enables the suction wind to be guided inside the machine without additional installation space being required for this purpose. The result is a simple structure with minimal structural space requirements. Furthermore, the suction means can be optimized in terms of flow technology such that a very low flow resistance of the suction wind from the pick-up unit into the suction channel is obtained. The core idea of the invention is thus an advantageous arrangement of the belt lifting unit on one side of the side frame, in combination with an equally advantageous guiding of the suction wind through the side frame directly into the belt lifting unit. The suction means introduce suction air and separated fibrous material into the side frame at the upper side, and preferably from the upper side into the lower region through the side frame, and the side facing away from the side frame is guided into the suction channel by means of a belt lifting unit arranged at the side frame.

Preferably, the belt lifting unit is arranged on the outside of the side frame facing away from the pick-up unit. That is, the belt lifting unit does not increase the vertical dimension of the side frames. The minimum required installation space for carrying out the bale opener with the frame is obtained, and the suction channel is arranged laterally in the installation direction in the travel region of the side frame. Possible hose guiding from the pick-up unit into the belt lifting unit may be eliminated. The suction wind can be advantageously guided into the belt lifting unit by the design of the suction means according to the invention with sections through the side rims. If the frame is running, the side frames also run parallel to the extension of the suction channel, and the belt lifting unit can be driven with the movement of the side frames.

Preferably, the frame is configured in a door-like structure and comprises a vertically extending first side frame as the side frame described above and additionally has a second side frame which also extends vertically. The vertical direction is understood here with reference to a substrate on which an bale opener or a bale to be cut is arranged. In connection with the fiber air flow guidance according to the invention, the side frames can be embodied very narrowly as seen in the installation direction.

It is particularly advantageous if the belt lifting unit has a frame-like shelf, at which the lower rollers 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 passage and covers the opening therein. The suction duct is guided here from the side frame directly into the interior region of the frame-like rack, so that the suction air can likewise be guided from the side frame through the suction duct into the interior region of the frame-like rack together with the fibrous material. The cover belt thus has a polygonal shape, preferably a trilateral or quadrangular shape, in particular a trapezoidal or rectangular shape, in the region of the belt lifting unit. The cover tape is guided by the frame-type shelves such that the cover tape is lifted from the upper side of the suction channel only in the region of the frame-type shelves with the lifting units. The design of the suction pipe can be designed such that, in combination with the frame-like frame, no open flow area is created at the upper side of the suction channel, whereby the secondary air flow into the suction channel is minimized or, for example, in the case of the use of seals, avoided. The frame-like shelf may advantageously be formed by two side elements, each having the polygonal shape described above. The mentioned rollers are freely rotatably mounted at their corners and extend between the side elements. The shape of the frame-like support enables a very simple guidance of the suction line into the interior region of the frame-like support with minimal installation space. The suction duct preferably has a corresponding curvature so as to end with the open end side approximately in the plane of the opening at the upper side of the suction channel. The curvature may be supplemented by a bevel or bevel, or replaced by them.

Further advantageously, the suction pipe can form a mechanical connection between the side frame and the belt lifting unit, so that the suction pipe acts as a driver for the belt lifting unit by movement of the side frame in the installation direction. In this case, it is advantageous if the suction pipe is arranged rigidly on the side frame and the belt lifting unit, although having a connection to the suction pipe, can run along the upper side of the suction channel independently of the machine frame and thus the running movement of the suction pipe. A rigid connection in all spatial directions between the suction pipes with the lifting units, in particular the frame-like shelves, is thus not required; however, a mechanical connection is required so that the movement of the frame and thus the suction pipe in the installation 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 drive frame which forms an open end of the suction pipe and is connected to the receiving opening of the belt lifting unit for transition into the belt lifting unit. The connection between the entraining frame and the receiving opening is in this case carried out non-rigidly. This enables to a certain extent a relative movement of the side frame and the belt lifting unit with respect to each other, which increases the flexibility of use.

In a particularly advantageous manner, the end-side entraining frame can be guided vertically into the receiving opening, so that the entraining frame has a vertical mobility in the receiving opening. For example, the belt lifting unit of the suction pipe may have a height deviation from the guide of the frame along the upper side along which it is guided. The height deviation can be compensated for by the vertical movability of the entraining frame at the end of the suction tube in the receiving opening of the belt lifting unit. The irregularities in the travel path of the bale opener can likewise be compensated for thereby, since they do not have a negative effect on the transport of the fibre air stream.

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

Additionally or alternatively, the belt lifting unit has an adjusting mechanism by means of which the ventilation pipe can be adjusted in the vertical direction at the frame-like shelf and/or the entraining frame can be adjusted in the transverse direction at the frame-like shelf along the axis of rotation of the rollers. This makes it possible to precisely adjust the drive frame and thus the ventilation pipe guided vertically into it, in particular for the transition into the suction channel. Thus, the suction channel may be preassembled at the base, i.e. relatively independent of the position of the side frame relative to the suction channel. The actuating mechanism can orient the drive frame and the ventilation tube in such a way that the ventilation tube is oriented in particular toward the center of the intake air duct formed in the intake air duct, in particular in order to minimize secondary air flow, which can occur between the inner wall of the intake air duct and the ventilation tube. Last but not least, this has a positive effect on avoiding friction between the ventilation tube and the suction wind channel. After the belt lifting unit has been set up, the drive frame can be placed by the adjusting mechanism in a transverse position which corresponds to the configuration of the suction air duct in the suction air duct, so that the ventilation pipe is sealed with its output side as far as possible against the inner wall of the suction air duct. But a seal may be provided as well.

Alternatively or additionally, the belt lifting unit has a horizontal adjustment mechanism (ebeneinstillvorrichtung), by means of which the belt lifting unit can be adjusted relative to a preferably vertically extending suction pipe in the side frame.

In order to achieve an advantageous guiding of the cover belt when the cover belt is lifted locally from the upper side of the suction channel, it is provided that the lower rollers and/or at least one upper roller have a width adapted to the width of the cover belt. The respective rollers have 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 roller and/or at least one upper roller are configured in a bulge. The bulged embodiment in particular brings about a self-centering of the cover belt over the width of the rollers, so that the cover belt is not laterally guided out of the way when the belt lifting unit travels in the installation direction over the suction channel.

Another advantage is achieved if the belt conveyor rollers are arranged on the end sides of the lower rollers, by means of which the belt lifting units are guided over the suction channels. Here, the belt conveying rollers are arranged only at the end sides of the rollers at the lower side to guide the cover belt. However, the belt conveyor rollers are likewise freely rotatable relative to the rollers on the underside and are therefore connected in a rotationally fixed manner to the rollers for guiding the cover belt on the underside. The belt conveyor rollers are configured to roll on the upper side of the suction channel and are received at the frame shelves of the belt lifting unit. In the case of two rollers on the lower side and with two belt conveyor rollers arranged on the end side, four belt conveyor rollers are obtained, which are arranged at the frame-like shelves of the belt lifting unit and by means of which the belt lifting unit can be made to travel 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 for the clip-free threading of the cover tape, which is particularly advantageous for the life of the cover tape. The belt conveyor rollers are freely rotatable relative to the lower rollers due to the larger diameter relative to the lower rollers and the different rotational speeds that accompany them. The belt conveyor rollers and the associated lower rollers can thus be assembled very simply and cost-effectively on the same shaft, which, when present, only has to be mounted at the frame-like shelf described above. This arrangement reduces the risk of friction with the cover tape, which may impair the life of the cover tape.

Particularly advantageously, the lower rollers have a first bearing and the belt conveyor rollers have a second bearing. The bearing is in particular configured as a rolling bearing. The respective bearings are configured separately from one another and are received on a common shaft. Alternatively, the belt conveyor rollers may also be supported by the second bearing on the outside of the lower rollers, so that the lower rollers extend below the belt conveyor rollers and the second bearing. This promotes simple assemblability, in particular on the rest of the belt lifting unit.

At least one upper roller may be provided, which has a limiting ring at its end face. The limiting ring is arranged at most axially displaceably to such an extent on at least one upper roller that excessive slipping of the cover belt from the rolling surface of the rollers of the belt lifting unit is prevented. The limiting ring thus ensures the guidance of the belt lifting unit along the cover belt. Thus, in the present invention, slip occurs substantially along the rotational axis of the rollers of the belt lifting unit. In the context of the present invention, excessive means in particular that the cover belt is prevented from rubbing against the components of the belt lifting unit, which are fixed relative to the belt lifting unit, for example at its longitudinal edges, for example the frame-like shelves described above, and can therefore be subjected to greater wear. This solution thus also contributes to the durability of the cover strip during operation, among other things.

The at least one upper roller and the associated limiting ring are rotatably supported on the shaft by means of a common bearing. This also promotes simple assemblability. Furthermore, the respective rollers and shaft can be made as standard components, which has a favourable effect on the manufacturing costs.

The axes for at least one upper roller and for the lower roller extend parallel to one another and have a polygonal arrangement with respect to one another. In the case of two upper rollers, they preferably have a smaller distance from one another than the lower rollers. The shaft for the upper roller and the shaft for the lower roller preferably connect the two side elements of the frame bracket to one another, whereby the frame bracket is advantageously constructed as a rigid structure. The limiting ring performs the task of a central guide of the cover belt on the upper rollers, wherein the guide of the cover belt is supported by the drums of the upper rollers and the lower rollers.

Preferably, the limiting rings are arranged non-rotatably on the respective at least one upper roller. This promotes the possibility that all components can be made as standard pieces, which can be mounted integrally modularly at the remaining belt lifting units.

The receiving opening, which is structurally connected to the frame rack, is located approximately between the lower rollers in the lower region of the frame rack in a horizontal extension. Preferably, coupled with the receiving opening is the above-mentioned ventilation tube 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 openings together with the ventilation tube form a common component or a common structural unit.

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

The frame-like support is also advantageously covered by means of outer sheet metal elements, wherein the covering can be provided 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 frame and thus the pick-up unit on the fibre bundle in the setting direction can be detected. As a switching element for activating the position switch, a switching element arranged at the suction channel can be used, against which switching element the contact roller can be driven in order to trigger the position switch. For example, in positioning travel (reference zfahrt), the gantry can be moved in a direction until the position switch is activated in order to position the gantry in the installation direction.

A further advantage is that at the belt lifting unit an electrical coupling is arranged which is connected with the drag chain unit of the power and signal connection. The electrical power and signal connection from the stationary junction box to the frame that can travel in the installation direction is thus obtained in a simple manner, wherein the electrical power and signal connection is arranged on the side of the suction channel.

The electrical coupling can advantageously be arranged at the belt lifting unit by coupling plates protruding beyond the sides of the suction channel. The position switch can also be mounted, for example, on the coupling plate. The power and signal connection preferably further comprises a storage tank in which the tow chain unit is received. Advantageously, the storage tank is located outside the suction channel in a laterally arranged manner.

Thus, the belt lifting unit performs various 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 for transferring 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 is used for receiving an electrical coupling part, by means of which the drag chain unit of the power and signal connection part can be coupled with the moving frame. Finally, the belt lifting unit is also adapted to receive at least one position switch to detect the travelling position of the frame in the setting direction.

Drawings

Further measures for improving the invention are further elucidated below together with a description of a preferred embodiment of the invention by means of the accompanying drawings. In the accompanying drawings:

figure 1 shows a first perspective view of an bale opener with a 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 frames of the machine frame,

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

figure 5 shows a detailed view of the cover tape guiding on the rollers at the upper side at the frame-like stand,

figure 6 shows a detailed view of the guiding of the cover belt on the rollers of the underside of the frame-type shelf,

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

fig. 8 shows a detailed view of the belt lifting unit, wherein the suction pipe transitions into the ventilation pipe of the belt lifting unit.

The present invention relates to the following embodiments:

1. an bale opener (1),

for opening a pressed fiber package (100) arranged in a direction of arrangement (10), and

it has

-a pick-up unit (12),

-a frame (11), said frame (11) being configured in a portal configuration comprising

A first side frame (17) extending vertically, and

A vertically extending second side frame (18),

wherein the pick-up unit (12) is received vertically variably between the first side frame (17) and the second side frame (18), and

-the frame (11) can be moved along the direction of placement (10) of the fibre pack (100)

Travel in which

Said fibre pack (100) being able to be positioned between said first side frame (17) and said second side frame (18) and said pick-up unit (12) being able to drive through said fibre pack (100), and

the fibre material of said fibre pack (100) can thus be picked up,

-suction channels (13) extending along the direction of placement (10) of the fibre bales (100),

suction air together with the fibrous material can be introduced into the suction channel by a suction means (14) and

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

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

it is characterized in that the method comprises the steps of,

the suction channel (13) is mounted at a base (42), wherein,

the belt lifting unit (16) is arranged on the outside of the first side frame (17) facing away from the pick-up unit (12), and

-a first suction pipe (19) and a third suction pipe (58) of the suction mechanism (14) are guided into the belt lifting unit (16) transversely from the inner side of the first side frame (17),

So as to

-said first side frame forms part of the fibre air flow guidance from the pick-up unit (12) to the suction channel (13).

2. Bale opener (1) according to embodiment 1, characterized in that,

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

-the first suction duct (19) leads from the first side frame (17) into an interior region of the frame-like shelf (20).

3. Bale opener (1) according to embodiment 2, characterized in that the lower roller (21) and/or the at least one upper roller (22)

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

in the region lying in the middle in the width direction, has a larger diameter than in the region on the edge side.

4. Bale opener (1) according to embodiment 3, characterized in that the lower roller (21) and/or the at least one upper roller (22) are of a bulged construction.

5. Bale opener (1) according to any of the embodiments 2 to 4, characterized in that on the end side of the lower roller (21) there is arranged a belt conveyor roller (25) which is designed to guide the belt lifting unit (16) on the suction channel (13).

6. Bale opener (1) according to embodiment 5, characterized in that,

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 separated from each other and are received on a common shaft (30).

7. Bale opener (1) according to any of embodiments 2-6, characterized in that,

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

8. Bale opener (1) according to embodiment 7, characterized in that the at least one upper roller (22) and the corresponding limiting ring (28) are rotatably supported on the shaft (31) by means of a common bearing (29).

9. Bale opener (1) according to embodiment 8, characterized in that the limiting ring (28) is arranged in a rotationally fixed manner at the at least one upper roller (22).

10. Bale opener (1) according to embodiment 9, characterized in that the suction means (14) comprise a suction hood (51) at the upper side of the pickup unit (12), to which suction hood is coupled a spiral hose (52) guided vertically upwards, and in that the spiral hose (52) is coupled at the upper side to a second suction duct (53) which introduces suction air at the upper side into the first side frame (17) and in that the first side frame (17) is coupled to the third suction duct (58).

11. Bale opener (1) according to any of the embodiments 1-10, characterized in that the suction duct (19) forms a mechanical connection between the first side frame (17) and the belt lifting unit (16) such that the suction duct (19) forms a driver of the belt lifting unit (16) by a movement of the first side frame (17) in the setting direction (10).

12. Bale opener (1) according to embodiment 11, characterized in that the suction duct (19) has an end-side entraining frame (23) for the transition into the belt lifting unit (16), which end-side entraining frame

Forming the open end of the suction duct (19), and

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

13. Bale opener (1) according to embodiment 12, characterized in that the end-side driving frame (23)

Is guided vertically into the receiving opening (24), and

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

14. Bale opener (1) according to

embodiment

12 or 13, characterized in that a breather pipe (32) is coupled to the receiving opening (24), which breather pipe extends into the suction channel (13).

15. Bale opener (1) according to embodiment 14, characterized in that the belt lifting unit (16) has a vertical adjustment device (33) by means of which

-enabling adjustment of the vent pipe (32) in a vertical direction on the frame-type shelf (20), and/or

-enabling adjustment of the entraining frame (23) on the frame-like shelf (20) in a transverse direction.

Detailed Description

Fig. 1 and 2 show in two different perspective views an bale opener 1 for picking up fiber bales 100 from the upper side, which are arranged side by side in a plurality of rows in a placement area 41 on a base 42 in a placement direction 10. In order to shave the upper side of the fiber package 100, a pick-up unit 12 is used, which is received at the frame 11 travelling in a vertical direction. The frame 11 has a first side frame 17 and a second side frame 18, between which two door profiles (door frame profiles) 43 are arranged spaced apart from one another, extending between the two side frames 17 and 18.

The side frames 17 and 18 have rolling rollers (working rollers) 44 and 45, and in order to guide the machine frame 11 in the installation direction 10, slide rails (guide rails) 46 are used, on which the rolling rollers 44 at the first side frame 17 are guided. The lower roller 45 at the second side frame 18 rolls on the base 42, on which the fiber package 100 is likewise mounted, and on which the rail 46 is likewise mounted.

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

rollers

47, 48 extending parallel to each other in a transverse direction 49. Preceding the pick roller 48 is a dust bar 50. If the

rollers

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

The suction mechanism 14 comprises a suction hood 51 at the upper side of the pick-up unit 12, coupled to which is a spiral hose 52 guided vertically upwards. The spiral hose 52 may change its length when the pickup unit 12 travels vertically, and the spiral hose 52 is coupled to an aspiration duct 53 at an upper side, which induces aspiration wind into the first side frame 17 at the upper side. The suction pipe 53 is thus coupled self-supporting to the upper side of the first side frame 17, and the spiral hose 52 is at the end of the suction pipe 53 in a hanging arrangement. The suction air passes through the first side frame 17 and reaches the reprocessing station together with the fiber fleece via the suction channel 13.

Manual control of bale opener 1 is performed by means of a console 54, which is illustratively arranged on the front side of suction channel 13. The power supply of the bale opener 1 is achieved by a junction box 55, which is located at the same front end of the suction pipe 13. The power supply and signal connection to the movable frame 11 can be established by means of a power and signal connection 38 (which comprises a drag chain unit 37), wherein the power and signal connection 38 is laterally to the suction channel 13. The electrical coupling 36 in the form of a driver forms a movable coupling of the drag chain unit 37, and the electrical coupling 36 is coupled to the belt lifting unit 16, which is connected to the first side frame 17 and thus moves together with the movement of the frame 11 in the installation direction 10. The belt lifting unit 16 is for lifting the cover belt 15 that covers the suction duct 13 on the upper side.

At the outer region of the gate profile 43, a bridge element 56 is arranged which extends in the installation direction 10 on the upper side and at which the pickup unit 12 is received suspended by a traction means 57.

In fig. 3, a detailed view of the belt lifting unit 16 arranged outside the first side frame 17 is shown, with the covering element of the first side frame 17 removed. The belt lifting unit 16 runs in the installation 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 installation direction 10.

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

The suction line 58 is likewise located in the first side frame 17 as part of the suction means 14 and is visible as a result of the removal of the external coating. The suction duct 58 transitions into a further suction duct 19 which extends from the first side frame 17 into the belt lifting unit 16. For this purpose, the suction tube 19 has a curved shape and the suction tube 19 opens on the upper side into a entraining frame 23 which forms the open end of the suction tube 19 and is connected to a receiving opening 24 in or at the belt lifting unit 16. Coupled to the lower side of the receiving opening 24 is a ventilation tube which protrudes into the suction channel 13 and is therefore not visible in this illustration.

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

rollers

21 and 22 being received at a frame-like shelf 20 forming the base body of the belt lifting unit 16.

A storage groove 40 is arranged at the outer side of the suction pipe 13, into which the drag chain unit 37 is placed. The drag 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 serves to couple the power and signal connection 38 with the moving part of the bale opener at the same time.

Also on the coupling plate 39 of the belt lifting unit 16 is a position switch 34 which can cooperate with a switching element arranged on the suction channel 13, so that a signal can be generated by the position switch 34 when such a switching element is hit. The position of the frame 11 with the first side frame 17 in the installation direction 10 can be detected by this signal.

Fig. 4 shows a perspective view of a frame-type rack 20, which forms the basic structure of the belt lifting unit 16. The side elements of the frame-like stand 20 are configured approximately trapezoidal in such a way that the horizontal spacing of the upper rollers 22 is smaller than the horizontal spacing of the lower rollers 21 in order to guide the cover strip 15. In order to achieve travel of the frame rack 20 on the upper side of the suction channel, belt conveyor rollers 25 are arranged on the outer side of the rollers 21 on the lower side. 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 independently of the lower rollers 21 at the frame carriages 20.

A limiting ring 28 is arranged on the end face of the upper roller 22, which enables guidance of the cover belt 15 and is configured such that it cannot rotate relative to the upper roller 22.

The lower roller 21 and the upper roller 22 are preferably embodied in a bulged manner. The

rollers

21, 22 each have a width adapted to the width of the cover belt. Furthermore, preferably, all

rollers

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

rollers

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

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

Fig. 6 shows a cross-sectional view of the lower roller 21, which is supported on the shaft 30 by means of the first bearing 26. 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 conveyor roller 25 which is configured to roll on the upper side of the suction channel 13. In order that the belt conveyor rollers 25 can rotate independently of the rotational movement of the lower rollers 21, the belt conveyor rollers are received in a freely rotating manner on the same shaft 30 by means of the second bearing 27.

A position switch 34, which has a contact roller 35, is arranged on the front side of the frame mount 20. The position switch 34 is used to detect the position of the frame 11 of the bale opener 1 in the installation direction 10 in such a way that the contact rollers 35 can strike contact elements, not shown further, 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 course of the cover belt 15 from the upper side of the suction channel 13 via the lower rollers 21 and the upper rollers 22, so that a trapezoidal interior is formed with the frame 20, into which interior the suction duct 19 is guided. The suction duct 19 ends in a entrainment frame 23, which is guided into a receiving opening 24. The receiving opening 24 forms an upper component of the ventilation tube 32, which leads into the suction channel 13. If the first side frame 17 now travels, the suction pipe 19 likewise travels with the first side frame 17. The belt lifting unit 16 is also moved together in the installation direction 10 by a movement of the suction pipe 19 at least in the direction of travel by a positive connection between the entraining frame 23 and the receiving opening 24. Furthermore, the form-fitting connection between the entraining frame 23 and the receiving opening 24 only in the plane allows a vertical movement of the suction tube 19 relative to the receiving opening 24 and thus relative to the belt lifting unit 16. The deviation in the height profile of the upper side of the suction channel 13 can thus be compensated by the movement of the first side frame 17 in the installation direction 10.

Finally, fig. 8 also shows a detailed view of the design of the receiving opening 24, which surrounds the entraining frame 23 on the outside on a section. The vertical position of the ventilation tube 32 and thus of the receiving opening 24 can be adjusted by means of the vertical adjustment device 33, so that the ventilation tube 32 can also be adjusted on the basis of the suction air duct in the suction channel 13, so that a rolling guidance of the ventilation tube 33 by the belt conveyor rollers 25 of the frame-type rack 20 is achieved. On the front side, a cover belt 15 is shown, which partly encloses the rollers 21 on the underside. 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 that is introduced into the suction channel 13 is located to the left behind the roller 21 shown here on the lower left in the direction of the transported fibre air flow or suction wind according to fig. 7 and 8. The ventilation tube 32 is preferably received with its end pointing in this direction in the suction channel 13 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 sealing 59 advantageously lies sealingly against all the inner sides of the suction channel 13 facing the ventilation tube 32 and against the inner or lower side of the cover strip 15 facing the sealing.

The seal 59 can also be dispensed with, since in fig. 7 and 8 the suction air flows to the left and there is therefore less concern about fibrous material adhering to the transition between the ventilation tube 32 and the suction channel 13.

Furthermore, the ventilation tube 32 can be designed in such a way that, although the cover strip 15 is turned in the direction of the preferably and essentially octagonal cross section of the suction channel 13 from a generally rectangular cross section with respect to the interior shape of the entrainment frame 23 or of the suction tube 19 at its end facing the ventilation tube 32, the cross-sectional area of the ventilation tube is unchanged. Thereby reducing the flow resistance of the breather tube 32 and the risk of fibrous material adhering to the breather tube 32. If the surface of the ventilation tube 32 for diverting the fibre air flow or suction air in the direction of the suction channel 13 is curved, this also reduces the risk of fibre material adhering.

The embodiments of the present invention are not limited to the above preferred examples. But variant embodiments are conceivable which use the solution shown even in the case of radically different designs. All features and/or advantages derived from the description and the figures, together with the constructional details or spatial arrangements, are critical for the invention, both alone and in various combinations.

List of reference numerals

1 bale opener

10. Direction of placement

11. Rack

12. Pick-up unit

13. Air suction channel

14. Suction mechanism

15. Cover tape

16. Belt lifting unit

17. First side frame

18. Second side frame

19. First air suction pipe

20. Frame type rack

21. Lower roller

22. Upper roller

23. Driving frame

24. Receiving opening

25. Belt conveying roller

26. First bearing

27. Second bearing

28. Limiting ring

29. Bearing

30. First shaft

31. Second shaft

32. Vent pipe

33. Vertical adjusting device

34. Position switch

35. Contact roller

36. Electrical connection

37. Drag chain unit

38. Power and signal connection

39. Connecting plate

40. Storage groove

41. Placement area

42. Substrate

43. Door profile

44. Rolling roller

45. Rolling roller

46. Sliding rail

47. Support roller

48. Pick roller

49. Transverse direction

50. Dust rod

51. Suction hood

52. Spiral hose

53. Second air suction pipe

54. Operating table

55. Junction box

56. Bridging element

57. Traction device

58. Third air suction pipe

59. Sealing part

100. Fiber package

Claims

1. An bale opener (1),

it has

-a pick-up unit (12),

A first side frame (17) extending vertically, and

a vertically extending second side frame (18),

-the frame (11) is movable along the direction of placement (10) of the fiber package (100), wherein

the fibre material of said fibre pack (100) can thus be picked up,

suction air together with the fibrous material can be guided into the suction channel (13) by a suction mechanism (14) and

the suction channel (13) is covered on the upper side by a cover belt (15), and

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

it is characterized in that the method comprises the steps of,

the suction channel (13) is mounted at a base (42), wherein,

so as to

-said first side frame (17) constitutes a component of said guiding of the fibre air flow from the pick-up unit (12) to said suction channel (13).

2. Bale opener (1) according to claim 1, characterized in that,

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

3. Bale opener (1) according to claim 2, characterized in that the lower roller (21) and/or the at least one upper roller (22)

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

4. A bale opener (1) according to claim 3, characterized in that the lower roller (21) and/or the at least one upper roller (22) are of a bulged construction.

5. Bale opener (1) according to claim 2, characterized in that on the end side of the lower roller (21) there is arranged a belt conveying roller (25) which is designed to guide the belt lifting unit (16) on the suction channel (13).

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

7. Bale opener (1) according to claim 6, characterized in that,

-the first bearing (26) and the second bearing (27) are separate from each other and received on a common first shaft (30).

8. Bale opener (1) according to claim 2, characterized in that,

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

9. Bale opener (1) according to claim 7, characterized in that,

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

11. Bale opener (1) according to claim 8, characterized in that the limiting ring (28) is arranged in a rotationally fixed manner at the at least one upper roller (22).

12. Bale opener (1) according to claim 10, characterized in that the limiting ring (28) is arranged in a rotationally fixed manner at the at least one upper roller (22).

13. Bale opener (1) according to claim 12, characterized in that the suction means (14) comprise a suction hood (51) at the upper side of the pickup unit (12), with which suction hood (51) is coupled a spiral hose (52) guided vertically upwards, and in that the spiral hose (52) is coupled to a second suction duct (53) at the upper side, which second suction duct (53) introduces suction air into the first side frame (17) at the upper side and to the third suction duct (58) in the first side frame (17).

14. Bale opener (1) according to any of claims 1-13, characterized in that the first suction duct (19) forms a mechanical connection between the first side border (17) and the belt lifting unit (16) such that the first suction duct (19) forms a driver of the belt lifting unit (16) by a movement of the first side border (17) in the setting direction (10).

15. Bale opener (1) according to claim 14, characterized in that the first suction duct (19) has an end-side entraining frame (23) for the transition into the belt lifting unit (16), which end-side entraining frame (23)

Forming the open end of the first suction duct (19), and

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

16. Bale opener (1) according to claim 15, characterized in that the end-side driving frame (23)

Is guided vertically into the receiving opening (24), and

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

17. Bale opener (1) according to claim 15 or 16, characterized in that a breather pipe (32) is coupled to the receiving opening (24), which breather pipe (32) extends into the suction channel (13).

18. Bale opener (1) according to claim 17, characterized in that the belt lifting unit (16) has a vertical adjustment device (33) by means of which