CN112055763B

CN112055763B - Bale opener with improved slide rail for guiding frame

Info

Publication number: CN112055763B
Application number: CN201980029475.4A
Authority: CN
Inventors: J·博斯曼; P·利尔希
Original assignee: Trutschler Group Europe
Current assignee: Trutschler Group Europe
Priority date: 2018-05-04
Filing date: 2019-02-14
Publication date: 2023-05-05
Anticipated expiration: 2039-02-14
Also published as: WO2019211020A1; EP3788192B1; CN112055763A; EP3788192A1; DE102018110798A1

Abstract

The invention relates to a bale opener (1) for opening a pressed fibre bale (100) arranged in a setting direction (10), comprising a pickup unit (12) and a frame (11), which is arranged vertically variably at the frame (11) of the bale opener (1) and which can travel in the setting direction (10) such that the pickup unit (12) can drive through the fibre bale (100) and can pick up fibre material from the fibre bale (100), wherein the frame (11) has a gate-like structure and is guided by means of rolling rollers (53) on a rolling surface of a sliding rail (14) of a sliding rail assembly (13) mounted on a substrate, which surface faces the rollers (53). According to the invention, the rolling surface is curved in the direction of the roller (53) as seen along the longitudinal extension of the rail (14).

Description

Bale opener with improved slide rail for guiding frame

Technical Field

The invention relates to a bale opener for opening pressed fibre bales arranged in a setting direction, having a frame and a pickup unit, wherein the pickup unit is arranged vertically variably at the frame, and wherein the frame is movable 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, and wherein the frame has a gate-like structure and is guided on a rail assembly which is mounted on a base and comprises rails (guide rails).

Background

DE3637578A1 discloses a bale opener for opening pressed fibre bales arranged in a direction of arrangement, having a frame at which a pick-up unit is arranged vertically variably. The frame may travel in the direction of placement of the fibre pack so that the pick-up unit may drive over the fibre pack and may pick up fibre material from the fibre pack. For this purpose, the pick-up unit has a pick-up roller which is set in rotation and in which the fleece is removed from the fleece package and is then transported away by a suction mechanism.

In order to guide the frame in the setting direction, the bale opener has two parallel rails which are arranged on the base or which are embedded in a complex manner in the base and on which the frame is guided in the setting direction and can run. For this purpose, a rotatably mounted roller is provided below each of the side parts, which roller rolls on the respective rail and is also driven accordingly for generating the travel movement. In order to guide the frame in a stable manner, the side parts must be designed with a large width in the installation direction in order to achieve the greatest possible distance of the rollers in the installation direction, since the frame can only be guided in a stable manner laterally on the sliding rail.

DE3734480A1 discloses a further embodiment of slide guiding of a frame of an bale opener. The slide rail has a contour with a base section which can be mounted upright on the base and a vertical section which points vertically upwards, so that the roller can be received at the vertical section. The rollers can also assume a lateral guide function, which enables a reliable guidance of the machine frame in the installation direction.

US4507826a discloses a bale opener having a further embodiment of a frame which is guided by means of corresponding rollers on a rail which likewise has a specific contour. The profiled rail has a central guide section, by means of which the machine frame obtains lateral stability. The disadvantage here is that a profiled rail is produced which has a precision sufficient to achieve a correspondingly precise guidance of the machine frame in the installation direction, and the rail head has to be machined separately for lateral guidance. Furthermore, due to this design, corresponding rails are required below the two side frames of the machine frame, since lateral guidance of the machine frame, which can withstand mechanical loads, cannot be achieved by means of rails below only one side frame.

Disclosure of Invention

The object of the invention is to improve the guiding of the movement of the frame of the bale opener in the setting direction. The rail should be made as simple as possible and be able to be guided vertically as well as laterally.

This object is achieved based on a bale opener according to the description of the present application. Advantageous refinements of the invention are given in the description of the present application.

The invention includes the technical teaching that the sliding rail can be formed from a circular steel body, which has a substantially circular rail cross section.

The core idea of the invention is an bale opener for opening a pressed fibre bale arranged in a direction of arrangement. The bale opener is provided in a known manner with a pick-up unit which is arranged vertically variably at the frame of the bale opener. For this purpose, a frame is provided which can be moved in the installation direction, so that the pick-up unit can be driven over the fiber package and can pick up the fiber material from the fiber package. The bale opener has a gate-type structure and is guided by means of rolling rollers (working rollers) on roller-facing rolling surfaces (working surfaces) of slide rails of a slide rail assembly mounted on a substrate. The rolling surface is curved in the direction of the rollers, as seen along the longitudinal extension of the rail. This has the advantage of having a defined and small (and thus low friction) contact surface with the rolling rollers.

The curvature of the rolling surface preferably corresponds to a part of the circumference of an ellipse or circle. This is a particularly well suited shape, since it enables the bale opener guided thereon to be tilted about an axis extending along the travel path or longitudinal direction of the slide rail. The other side or half of the door does not therefore have to be guided on a rail.

Each of the bale openers mentioned may have guiding wheels. The guide wheels are arranged in a rolling manner on two outer surfaces of the slide rail, which are located opposite one another and adjoin the rolling surfaces on both sides, the axes of rotation of the guide wheels extending parallel to one another and perpendicularly to the axes of rotation of the rolling rollers. This prevents at least excessive slipping of the rolling rollers along the slide rail in the direction of their rotational axis. This improves operational reliability.

Preferably, each rolling roller has a rolling surface, seen transversely to its axis of rotation, which rolling surface has a smaller curvature than the rolling surface of the rail. This enables the above-described tilting to be achieved by engaging a further optimized contact surface with the slide rail.

The frame of the bale opener may have a first side frame and a second side frame opposite to the first side frame. The first side frame has the rolling rollers and is thus guided on a slide rail. According to the invention, the second side frame can be guided in such a way that it stands on the base on which the slide rail assembly is likewise arranged. This aspect simplifies the construction of the bale opener. On the other hand, the fibre pack display can thus be arranged from the longitudinal side of the bale opener, which greatly simplifies the handling of the bale opener.

The sliding rail preferably has a circular cross section and can therefore be formed from a circular steel body, which can be produced simply and at low cost. The rail is suitable for co-acting with the corresponding rolling rollers in order to achieve a horizontal guidance of the machine frame and to provide a lateral guidance, since the roller contact can be achieved not only on the upper side of the round steel body but also in the lateral regions of the rail. The sliding rail according to the invention does not have to be designed with a special contour, which, on the premise of an adaptive rolling process, leads to significantly higher costs. The round steel bodies can be obtained simply and can be used without regard to the rotational position, and for correspondingly long constructional solutions of the sliding rail, a desired number of round steel bodies, respectively having discrete lengths, can be arranged in succession, which form the sliding rail of the sliding rail assembly.

Here, the rail assembly comprises, in addition to the rail, other means for fixing the rail to the base, and means are provided for this purpose for connecting the rails to one another on the end sides. The result is a simple design of the slide assembly which can be flexibly mounted on the base in the same simple manner in order to provide a reliable guidance of the frame for the bale opener. The frame can be configured in a portal configuration, and only one side frame of the frame is guided by the rail assembly, while the opposite side frame can be guided on the base itself without rails. The lateral guidance of the frame can be ensured by the corresponding roller assembly in that the sliding rail in the form of a circular steel body allows for a sufficient lateral guidance of the frame.

The advantage achieved by the embodiment of the slide according to the invention is that the fiber packages can be transported in a simplified manner into the placement area by eliminating the second slide, and the placement area can be freely passed from the side opposite the slide for placing the fiber packages. Thus, despite the door-like structure of the frame, it is possible to realize that the bale opener only requires a single slide rail for guiding the frame, while the second side frame is guided in a simple manner on the base and thus only in the vertical direction. The area of the bale opener lying opposite the slide rail can thus be embodied with a continuous, uninterrupted base, so that the fibre bales can not only be deposited by the depositing channel, but also be delivered to the bale opener from the side with respect to the depositing direction.

It has been shown that a guide of the frame in a portal configuration by means of only one side of the design according to the invention of the rail is sufficient, in particular if two rolling rollers arranged at a distance from one another on the rail are guided and two other rolling rollers received on the second side rail can roll on the substrate without a further rail being necessary for this purpose. Other components of the bale opener, in particular the guide of the suction air, may be arranged on the side of the first side frame, for example parallel to the rail assembly, so that the placement area for placing the fiber bale may be sufficient, for example, with only one boundary marking, without further base construction.

The slide rail assembly may also advantageously have a plurality of foot elements configured to receive the slide rail and may be disposed on the base. The substrate is advantageously a substrate on which the roller rollers of the second side frame likewise roll and which at the same time coincides with the substrate on which the fiber package can likewise be placed in the placement region. The fastening of the rail body to the base by means of the foot elements can be realized in a simple manner and the foot elements can be arranged at discrete distances, so that the rail body for forming the rail extends freely extending between the foot elements which are arranged at a distance. The bending strength of the rail body is designed sufficiently in such a way that no disadvantages are involved in guiding the machine frame. Depending on the length of the slide rail, multiple foot elements may be mounted on the base at discrete distances from one another to receive multiple sections of the slide rail. The distance between the foot elements may be, for example, 500mm to 800mm. The foot element can be embodied in particular as a cast foot, wherein the cast body can be machined in particular for the functional surface.

For screwing the rail onto the foot element, a screw element can be provided, which is guided through a through-hole in the foot element and screwed into a threaded hole in the rail. The threaded element can thus be screwed into the rail body in the radial direction, so that the foot element is fixedly connected to the rail body at the underside thereof. The foot element can then be anchored to the base, for which purpose the foot element can be provided with a threaded element which is guided through the through-hole in the foot element and can be screwed into the base. The rail can be formed from a plurality of sections, which form a corresponding rail body, wherein the sections can be connected to one another on the end face by means of pins. This results in a continuous structure of the rail, which can likewise have a great length, depending on how long the placement area configured for placing the fiber packages extends.

The rail body for forming the rail can be made of structural steel, preferably St60 steel, for example. In this case, in the case of round steel bodies, they can have a diameter of 40mm to 100mm, preferably 50mm to 80mm, particularly preferably 60mm. It has been shown here that the flexural strength of the rail having a circular cross section with a diameter of 60mm is sufficient to ensure a reliable guidance of the machine frame without unnecessarily increasing the structural outlay for forming the rail assembly. Also, when the circular steel body has a diameter of about 60mm, a sufficient guiding function can be established by the roller action of the rolling rollers which can be used to guide the frame accordingly. The diameter may in particular be set to have a value of 55mm to 65 mm.

A further advantage is achieved if the foot element has two receiving surfaces which are oriented approximately V-shaped with respect to one another, wherein the rail body for forming the rail has a line contact with the receiving surfaces and in particular only with the receiving surfaces, so that a technically defined contact is made. On the underside of the foot element, a compensation plate can be arranged, by means of which irregularities in the base can be compensated. The rail is measured in the assembly and a corresponding number of compensation plates can be arranged under each of the foot elements in order to achieve a desired, preferably straight, extension of the rail after fixing the foot elements to the base. In this case, compensation plates of different thickness can be provided in order to also achieve precise adjustment of the orientation of the slide rail.

Finally, the slide rail assembly may have a cover element which is arranged at the foot element and which covers at least the underside and/or the lateral lower region of the slide rail. In particular, dirt and in particular fibrous material is thereby prevented from collecting alongside and below the rail, and cleaning of the area below and alongside the rail assembly is facilitated by the cover element. For example about two-thirds or three-quarters of the circular cross section of the rail can protrude from the upper cover surface of the cover element, so that a sufficient space is created in which the rolling rollers of the machine frame can be arranged for upper-side guidance at the rail and even for lateral guidance.

Preferably, the slide rail is formed from a plurality of segments, which are connected to one another by means of pins. It is thus not necessary to produce a long and therefore unstable rail profile that is difficult to transport. Furthermore, this also enables a variable length ordering and assembly of the slide rail depending on the installation site.

The mentioned rolling rollers are preferably formed of plastic at least in the region of the rolling surface. This is a particularly low loss material that can also be designed to have low friction.

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 drawings of which there are shown,

figure 1 shows a first perspective view of an bale opener having the features of the present invention,

figure 2 shows a second perspective view of the slide rail assembly with the slide rail formed of a circular steel body,

figure 3 shows a perspective view of the slide rail assembly,

fig. 4 shows a perspective detailed view of the slide assembly through two sections of the slide, the two sections being shown separately from each other,

figure 5 shows a cross-sectional view of a slide rail assembly having a slide rail and a foot member,

figure 6 shows a perspective detailed view of the foot element,

figure 7 shows in two views the guiding of the side frames on the slide rail of figure 2,

figure 8 shows the guiding wheel of figure 6 in greater detail,

fig. 9 shows the side frame guided on the slide rail in two states, and

fig. 10 shows the side frames guided on the slide rails in two further states.

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),

it has

-a pick-up unit (12) arranged vertically variably at the frame (11) of the bale opener (1), and

-said frame (11), which frame

Can travel in the setting direction (10) so that

-the pick-up unit (12) can drive through the fibre pack (100), and

-being able to pick up fibrous material from said fibrous pack (100),

has a gate structure, and

is guided by means of rolling rollers (53) on a rolling surface of a rail (14) of a rail assembly (13) mounted on a substrate, said rolling surface facing the rolling rollers (53),

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

-the rolling surface of the sliding rail (14) is configured to curve in the direction of the rolling rollers (53) seen along the longitudinal extension of the sliding rail (14), each rolling roller (53) having a concave rolling surface (68) seen transversely to its axis of rotation, said concave rolling surface having a curvature which is smaller than the curvature of the rolling surface of the sliding rail (14).

2. Bale opener (1) according to embodiment 1, characterized in that the curvature of the rolling surface of the slide rail (14) corresponds to a partial circumference of an ellipse or circle.

3. Bale opener (1) according to any of the above embodiments, characterized in that a guiding wheel (62) is provided,

the guiding wheel is arranged to roll at two outer surfaces of the sliding rail (14) opposite each other, which on both sides abut the rolling surface of the sliding rail (14),

the axes of rotation of the guide wheels extend parallel to each other and perpendicular to the axes of rotation of the rolling rollers (53).

4. Bale opener (1) according to any of the above embodiments, characterized in that,

the frame (11) has a first side frame (15) and an opposite second side frame (16),

the first side frame (15) has the rolling rollers (53) and is guided by them on the sliding rail (14), and

the second side frame (16) can be guided in a manner that it stands on the base (17) on which the sliding rail assembly (13) is likewise arranged.

5. Bale opener (1) according to any of the preceding embodiments, characterized in that the slide rail assembly (13) has a plurality of foot elements (18), which foot elements

Is configured to receive the slide rail (14), and

can be arranged on said substrate (17).

6. Bale opener (1) according to embodiment 5, characterized in that the slide rail (14) is screwed at the foot element (18).

7. Bale opener (1) according to embodiment 6, characterized in that for screwing the slide rail (14) at the foot element (18) a screw element (19) is provided, which screw element

Is guided through a through-hole (20) in the foot element (18), and

screwed into a threaded hole (21) in the slide rail (14).

8. Bale opener (1) according to any of embodiments 5-7, characterized in that,

-the foot element (18) is screwed in the base (17) by means of a screw element (22), and

-a through hole (23) is introduced in the foot element (18), through which hole the threaded element (22) is guided.

9. Bale opener (1) according to any of embodiments 5-8, characterized in that,

the foot element (18) has two receiving surfaces (25) which are oriented approximately V-shaped relative to one another and

-the sliding rail (14) has a line contact with the receiving surface (25).

10. Bale opener (1) according to any of the embodiments 5 to 9, characterized in that a compensation plate (26) is constructed and/or arranged on the underside of the foot element (18) facing away from the rail (14) in order to compensate for irregularities in the base (17) such that the rail (14) extends along a predetermined course.

11. Bale opener (1) according to any of the claims 5-10, characterized in that the slide rail assembly (13) has a cover element (27) which

Is arranged at the foot element (18), and

-covering at least one underside of the sliding rail (14) facing the base (17) and/or a lateral lower region facing the base (17).

12. Bale opener (1) according to any of the preceding embodiments, characterized in that the slide rail (14) is formed of a plurality of sections, which are connected to each other by means of pins (24).

13. Bale opener (1) according to any of the preceding embodiments, characterized in that the sliding rail (14) is made of structural steel.

14. Bale opener (1) according to any of the preceding embodiments, characterized in that the slide rail (14) has a circular cross section.

15. Bale opener (1) according to embodiment 14, characterized in that the cross section of the slide rail (14) has a diameter of 40mm to 100mm, preferably 50mm to 80mm, particularly preferably 60mm.

16. Bale opener (1) according to any of the preceding embodiments, characterized in that the rolling rollers (53) are formed of plastic at least in the region of the concave rolling surface (68).

Detailed Description

Fig. 1 and 2 show an bale opener 1 having the features of the invention in two different perspective views. The bale opener 1 serves for picking up fibre bales 100 from the upper side, which are arranged side by side in a plurality of rows in a placement region 28 on a base 17 in a placement direction 10. For shaving the upper side of the fibre pack 100, a pick-up unit 12 is used, which is received travelling in the vertical direction at the frame 11. The frame 11 has a first side frame 15 and a second side frame 16, and two door profiles (door frame profiles) 48 arranged at a distance from one another extend between the two side frames 15 and 16.

The side frames 15 and 16 have rolling

rollers

53 and 54, and for guiding the machine frame 11 in the installation direction 10, a rail assembly 13 with a single rail 14 is used, on which the rolling rollers 53 at the first side frame 15 are guided. The rolling rollers 54 on the underside of the second side frame 16 run on a base 17 on which the fibre pack 100 is likewise arranged and on which the rail assembly 13 with the rail 14 is fitted.

The pick-up unit 12 has two pick-up rollers 31 and three support rollers 32 on the underside, wherein the pick-up rollers 31 are located between the support rollers 32, and wherein all

rollers

31, 32 extend parallel to one another in the transverse direction 49. Preceding the pick roller 31 is a dust bar 33. If the

rollers

31, 32 are set in rotation, the pick-up roller 31 picks up the flocked component from the pressed fibre bale 100 and the fibre fleece is sucked off by the suction means 46 and fed to its further application.

The suction means 46 comprise a suction hood 34, which is located at the upper side of the pick-up unit 12, to which suction hood is coupled a spiral hose 35 guided vertically upwards. The spiral hose 35 may change length as the pickup unit 12 travels vertically, and the spiral hose 35 is coupled to an aspiration duct 36 at an upper side, which induces aspiration wind into the first side frame 15 at the upper side. The suction pipe 36 is here coupled self-supporting to the upper side of the first side frame 15, and the spiral hose 35 is located in a suspended arrangement at the end of the suction pipe 36. The suction air passes through the first side frame 15 and reaches the reprocessing station together with the fiber fleece via the duct 47.

Manual control of bale opener 1 is performed by means of a console 37, which is illustratively arranged at the front side of the tunnel 47. The power supply of the bale opener 1 is achieved by means of a junction box 38, which is located at the same front end of the channel 47. By means of the power and signal connection 29 comprising the drag chain unit 30, an electrical supply and signal connection with the movable frame 11 can be established, wherein the power and signal connection 29 is laterally to the channel 47 and connected with the junction box 38. The driver 39 forms a movable connection of the channel chain unit 30 and is connected to a belt lifting unit 40, which is connected to the first side frame 15 and thus moves together with the movement of the machine frame 11 in the setting direction 10. The belt lifting unit 40 is for lifting the cover belt 45, which covers the passage 47 on the upper side.

Fig. 3 shows a perspective view of a rail assembly 13 with a rail 14 which can be screwed onto a base, not shown here, by means of a screw element 22 by means of the shown plurality of foot elements 18. The underside of the foot elements 18 is here on the base, while the rail 14 extends in a floating arrangement between the foot elements 18. The rail 14 has an end stop 57 on the end face, which prevents the frame 11 with the rolling rollers 53 from falling off the rail 14. A cover element 27 is also arranged at the foot element 18, by means of which the area underneath the slide rail 14 is covered. Here, the cover element 27 is screwed laterally to the foot element 18.

Fig. 4 shows two

sections

14a and 14b of the slide rail 14 in an overhanging view, which can be connected at the end by a pin 24. For this purpose, receiving openings 59 are provided in the end faces 60 of the

sections

14a and 14b, into which the pins 24 can be introduced, for example, by the length of their respective half. A foot element 18 is shown arranged on the underside below the rail 14, wherein the connection between the

segments

14a and 14b is provided to form the rail 14 continuously over the area of the foot element 18, so that two

segments

14a and 14b connected to one another can be placed on the foot element 18 on the end side in each case. The illustration here also shows a cover element 27 which is arranged on the underside of the section 14a and is fixed to the foot element 18. Another covering element 27 is arranged below the section 14b, which may likewise be arranged at the foot element 18.

Fig. 5 shows a side view of the slide rail 14 in a region in which the two

sections

14a and 14b of the slide rail 14 are connected to one another at the end face by means of the pin 24, wherein the pin 24 is inserted approximately half the length thereof into the receiving opening at the end face 60 of the

sections

14a and 14b in a precisely fitting manner. The threaded element 19 guided through the through hole 20 in the foot element 18 is screwed into the threaded hole 21 in the slide rail 14. For this purpose, the threaded bores extend into the rail in a radial direction transversely to the longitudinal direction of the rail 14. Thus, the foot member 18 is secured to the underside of the sled 14. The cover element 27 is fastened laterally at the foot element 18.

Foot element 18 is screwed into base 17 by means of a further screw element 22, for which purpose screw element 22 also comprises a screw anchor element 58. Two compensation plates 26 are illustratively arranged between the upper side of the base 17 and the lower side of the foot element 18, whereby a vertical adjustment of the foot element 18 can be achieved above the base 17, in particular in order to achieve a straight orientation of the slide rail 14 even when fixedly arranged on the base 17. Instead of or in addition to compensating plates 26 of the same height or thickness, plates 26 may also have height or thickness dimensions that differ from one another.

Finally, fig. 6 shows a perspective view of the foot element 18 with two receiving surfaces 25 which are formed approximately V-shaped to one another. If the rail 14 is placed in the foot element 18 on the upper side, a line contact is obtained between the receiving surface 25 and the rail 14, which is embodied here as a circle. Between the two receiving surfaces 25 there is a through-hole 20 for threading the threaded element 19 and on the outside there is a through-hole 23 for threading the threaded element 22.

Fig. 7a shows the guiding of the side frame 15 of the bale opener 1 on the slide rail 14 in a view from below. The rolling rollers 53 protrude from the side frame 15 through openings, not shown, which are directed in the side frame 15 in the direction of the rail 14, slightly in the direction of the rail 14 and are arranged rolling on the rail 14. Each rolling roller 53 is received in the side frame 15 in a fixed and freely rotatable manner by means of an associated shaft 63. In order to prevent the rolling rollers 53 from moving on the slide rail 14 in particular in the transverse direction 49, four guide wheels 62 are provided here by way of example. The two guide wheels 62 are preferably mounted rotatably on a support 67, which are mounted, for example, on the respective running surfaces or running sides of the side frame 15, which are oriented toward the two running surfaces, or the running sides. The rotation axes of the guide wheels 62 extend parallel to one another and substantially transversely to the rotation axes of the rolling

rollers

53, 53 and transversely to the (guide) plane of the slide rail 14 which is directed in the direction of the side frame 15.

The pick-up unit 12 with the support roller 32 and the two

foot elements

18, 18 with the compensating element 26 respectively are also visible.

Fig. 7b shows a cross section of the side frame 15 with an open end face pointing in the direction of travel. The rear-mounted rolling rollers 53 can thus be seen in the side frames 15. The rolling rollers 53 have, for example, rolling surfaces 68 which are curved and concave in cross section. The curvature of the rolling surface 68 is smaller than the curvature of the rail 14 in the region of the side frame 15 on which the rolling roller 53 rolls. This results in a low-friction, preferably linear, contact between the respective rolling roller 53 and the sliding rail 14.

In this case, a drive section 66 is received on the left side of the roller 53 in the intermediate space with the side frame 15. The drive section is used to couple a drive motor to drive the rolling rollers 53 and thus to move the side frame 15 on the slide rail 14. In the example shown, reference is made to a pulley around which a drive belt, not shown here, is wound. The drive section 66 may have other forms. The drive section can be formed, for example, by means of a transmission gear, with which a further transmission gear meshes.

The rolling rollers 53 and the drive section 66 may be integrally formed or, as shown here, are arranged so as to be non-rotatable relative to one another by means of a connecting section 70.

At least the rolling rollers 53 are freely rotatably arranged on the associated shaft 63 via bearings 69, which shaft itself is arranged inside the side frame 15. The drive section 66 can likewise be arranged here on the left-hand bearing 69. Alternatively, the shaft 63 is thus freely rotatably arranged in the side frame 15 via the bearing 69. That is, the drive section 66 and the rolling rollers 53 may be non-rotatably arranged on the shaft 63. This achieves that the module has only to be inserted into the side frame 15 by means of

bearings

69, 69.

Fig. 8 shows one of the guiding wheels 62 in greater detail. The guide wheel 62 has a rolling surface section 65, by means of which the guide wheel 62 rolls guided along the slide rail 14 with a turn of the unlabeled rolling surface. The guide wheel 62 comprises a shaft 64 arranged freely rotatable with respect to the rolling surface section 65 by means of a bearing 71. The shaft 64 has a fixing opening 61 in the interior, for example in the form of a threaded bore which is preferably open on one side only. The fastening element, not shown, is preferably screwed into the fastening opening 61 from the side of the support 67 facing away from the respective guide wheel 62.

As can be seen, the central axis of the fixed opening 61, which is preferably circular in cross section, does not extend on the axis of rotation of the rolling surface section 65. This makes it possible to change the distance of the roller sections 65 from the rail 14 by means of rotating the roller 62 about the central axis. This is a very simple way of adjusting the guide wheel 62 in situ.

Fig. 9 shows the side frame 15 guided on the slide rail 14 in two states. The second state is shown by means of a dashed line and the relevant reference numerals are correspondingly provided with an apostrophe for better differentiation.

The slide rail 14 preferably has a circular cross section. Since the axes of rotation of the roller rollers 53 and the guide wheels 62 extend substantially transversely to one another and the concave rolling surfaces of the roller rollers 53 illustratively correspond to part of the circumference of a circle having the same diameter as the cross section of the rail 14 or a larger diameter than the cross section of the rail 14, the side rims 15 can be inclined on the rail 14. In fig. 9, the axis about which tilting occurs corresponds to a line which extends perpendicularly to the drawing plane and which contains the center point of the circle of the slide rail cross section.

In the tilted state, the side frame 15' is tilted slightly to the left here with respect to the first state shown with solid lines with the rolling rollers 53', the guide wheels 62' and the axles 63', 64 '. Nevertheless, due to the circular shape of the cross section of the slide rail 14, all guide wheels 62' continue to rest against the slide rail 14. Due to the concavity of the rolling surface of the rolling roller 53', the rolling roller likewise continues to contact the slideway 14. The inclination enables compensation of substrate irregularities along which the side frames 16, not shown here, can be guided. This improves the operational reliability and the use flexibility of the bale opener 1.

Fig. 10 again shows the side frame 15 guided on the rail 14 in two now different states. Similar to fig. 9, the second state is shown by means of a dashed line, and the relevant reference numerals are correspondingly provided with an apostrophe for better differentiation.

As can be seen, the bale opener 1 has illustratively only three guide wheels 62, 62', although any other larger number of guide wheels is possible. At least two guide wheels 62, 62' (here arranged on the left) are arranged on the same side of the slide rail 14, and a third guide wheel 62 is arranged on the opposite side of the slide rail 14.

The straight line of the two left guide wheels 62, 62' which are in contact with each other at the tangential outer side on the side thereof facing the slide rail 14 and the straight line of the right guide wheel 62 which is in contact with each other at the tangential outer side on the side thereof facing the slide rail 14 extend in parallel to each other. The two straight lines have a distance from each other which is greater than the outer dimension of the slide rail 14 as seen along the axis of rotation of the guide wheel 62. That is, one of the guide wheels 62, 62 '(lower left guide wheel 62 or upper left guide wheel 62') does not contact the slide rail 14. This is because it is not necessary to drive the side frame 16. When the rolling roller 53, which is not visible here, is accelerated, delayed activation of the side frame 16 occurs due to the inertia of other parts of the bale opener 1 (in particular the side frame 16 and the pick-up unit 12). A torque thus occurs about an axis which preferably runs parallel to the rotation axis of the guiding wheels 62, 62' and substantially centrally with respect to the bale opener 1. The inertia acts counter to the direction of movement of the side frames 15, 15' which are moved by means of the rolling rollers 53. Here, a state shown by a solid line occurs when accelerating in the movement direction B2, and a state shown by a broken line occurs when accelerating in the movement direction B1.

The spacing between the lines described above enables a seemingly delayed transmission of torque to the rail 14. Only when the side frame 16 moves as well, the left rear guide wheel 62 'or 62 in the traveling direction B1, B2 comes into contact with the slide rail 14, and the front guide wheel 62' or 62 may lose contact accordingly. Here, the driving effect with respect to the slide rail 14 is not affected.

The embodiments of the present invention are not limited to the above preferred examples. Rather, many variants are conceivable, which make it possible to use the solution shown even in a radically different design. All features and/or advantages derived from the description or the figures, together with the constructional details or spatial arrangements, are critical for the invention, both alone and in various combinations.

The number of rolling and guiding wheels 53, 62' and the shape of their rolling surfaces 68 may vary.

The cross section of the slide rail 14 need not be circular. The rail 14 can also be convexly curved in cross section only in the contact area with the rolling rollers 53, the guide wheels 62 at least in sections. Preferably, the cross-section of the peripheral line follows the contour of an ellipse, preferably a circle.

The pins 24 may be provided with a helical thread, so that the

rail sections

14a, 14b to be fastened to each other are screwed to each other. Instead, the stud 24 has a non-circular cross section. Thus, a non-rotatable mounting of the

sections

14a, 14b relative to one another and an orientation relative to one another can be achieved without a separate step being necessary for this purpose. Instead of a corresponding one of the pins 24 per connection, a plurality of pins 24 may also be provided, which have the same advantages.

List of reference numerals

1. Bale opener

10. Direction of placement

11. Rack

12. Pick-up unit

13. Sliding rail assembly

14. Sliding rail

Section of 14a slide rail

Section of 14b slide rail

15. 15' first side frame

16. 16' second side frame

17. Substrate

18. Foot element

19. First screw element

20. First through hole

21. Threaded hole

22. Second screw element

23. Second through hole

24. Pin

25. Receiving surface

26. Compensation plate

27. Covering element

28. Placement area

29. Power and signal connection

30. Drag chain unit

31. Pick roller

32. Support roller

33. Dust rod

34. Suction hood

35. Spiral hose

36. Air suction pipe

37. Operating table

38. Junction box

39. Driving part

40. Belt lifting unit

41. Belt with a belt body

42. Reversing wheel

43. Duct section

44. Hollow chamber

45. Cover tape

46. Suction mechanism

47. Channel

48. 48' door profile

49. Transverse direction

50. Bridging element

51. Driving unit

52. Electric control unit

53. 53' rolling roller

54. 54' rolling roller

55. Maintenance window

56. Traction device

57. End stop

58. Screw anchor element

59. Receiving holes

60. End side

61. Fixed opening

62. 62' guiding wheel

63. 63' shaft

64. 64' shaft

65. Rolling surface section

66. Drive section

67. Support frame

68. Rolling surface

69. Support for a vehicle

70. Connection section

71. Support for a vehicle

100. Fiber package

Claims

1. An bale opener (1),

it has

-a pick-up unit (12), the pick-up unit (12) being vertically variably arranged at a frame (11) of the bale opener (1), and

-said frame (11), which frame (11)

Can travel in the setting direction (10) so that

-the pick-up unit (12) can drive through the fibre pack (100), and

-being able to pick up fibrous material from said fibrous pack (100),

has a gate structure, and

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

-the rolling surface of the sliding rail (14) is configured to curve in the direction of the rolling rollers (53) seen along the longitudinal extension of the sliding rail (14), each rolling roller (53) having a concave rolling surface (68) seen transversely to its rotational axis, the concave rolling surface (68) having a curvature which is smaller than the curvature of the rolling surface of the sliding rail (14).

2. Bale opener (1) according to claim 1, characterized in that the curvature of the rolling surface of the slide rail (14) corresponds to a partial circumference of an ellipse or circle.

3. Bale opener (1) according to claim 1, characterized in that a guiding wheel (62) is provided,

the guiding wheel (62) is arranged to roll at two outer surfaces of the sliding rail (14) opposite each other, which on both sides abut the rolling surface of the sliding rail (14),

the rotation axes of the guide wheels (62) extend parallel to each other and perpendicular to the rotation axis of the rolling rollers (53).

4. Bale opener (1) according to claim 2, characterized in that a guiding wheel (62) is provided,

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

the second side frame (16) can be guided in a manner that it stands on the base (17), the sliding rail assembly (13) being likewise arranged on the base (17).

6. Bale opener (1) according to claim 4, characterized in that,

7. Bale opener (1) according to claim 1, characterized in that the slide rail assembly (13) has a plurality of foot elements (18), the foot elements (18)

Is configured to receive the slide rail (14), and

can be arranged on said substrate (17).

8. Bale opener (1) according to claim 6, characterized in that the slide rail assembly (13) has a plurality of foot elements (18), the foot elements (18)

Is configured to receive the slide rail (14), and

can be arranged on said substrate (17).

9. Bale opener (1) according to claim 8, characterized in that the slide rail (14) is screwed at the foot element (18).

10. Bale opener (1) according to claim 9, characterized in that for screwing the slide rail (14) at the foot element (18) a first screw element (19) is provided, which first screw element (19)

Is guided through a first through hole (20) in the foot element (18), and

screwed into a threaded hole (21) in the slide rail (14).

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

-the foot element (18) is screwed in the base (17) by means of a second screw element (22), and

-introducing a second through hole (23) in the foot element (18), the second threaded element (22) being guided through the second through hole (23).

12. Bale opener (1) according to claim 10, characterized in that,

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

-the sliding rail (14) has a line contact with the receiving surface (25).

14. Bale opener (1) according to claim 12, characterized in that,

-the sliding rail (14) has a line contact with the receiving surface (25).

15. Bale opener (1) according to claim 8, characterized in that a compensation plate (26) is constructed and/or arranged on the underside of the foot element (18) facing away from the slide rail (14) in order to compensate for irregularities in the base (17) such that the slide rail (14) extends in a predetermined course.

16. Bale opener (1) according to claim 14, characterized in that a compensation plate (26) is constructed and/or arranged on the underside of the foot element (18) facing away from the slide rail (14) in order to compensate for irregularities in the base (17) such that the slide rail (14) extends in a predetermined course.

17. Bale opener (1) according to claim 8, characterized in that the slide rail assembly (13) has a cover element (27), the cover element (27)

Is arranged at the foot element (18), and

18. Bale opener (1) according to claim 16, characterized in that the slide rail assembly (13) has a cover element (27), the cover element (27)

Is arranged at the foot element (18), and

19. Bale opener (1) according to any of claims 1-18, characterized in that the slide rail (14) is formed of a plurality of sections, which are connected to each other by means of pins (24).

20. Bale opener (1) according to any of claims 1-18, characterized in that the slide rail (14) is made of structural steel.

21. Bale opener (1) according to any of claims 1-18, characterized in that the slide rail (14) has a circular cross section.

22. Bale opener (1) according to claim 21, characterized in that the cross section of the slide rail (14) has a diameter of 40mm to 100mm.

23. Bale opener (1) according to claim 22, characterized in that the cross section of the slide rail (14) has a diameter of 50 to 80mm.

24. Bale opener (1) according to claim 23, characterized in that the cross section of the slide rail (14) has a diameter of 60mm.

25. Bale opener (1) according to any of claims 1 to 18, characterized in that the rolling rollers (53) are formed of plastic at least in the region of the concave rolling surface (68).