EP2343257A1 - Device for regulating the lateral offset of at least one web of material with variable adjustment ratio - Google Patents

Abstract

The device has a roller (1) rotatably mounted around an axis (A) and including bars (2). A control drive (4) is connected with a bar shifting unit (3) by a connecting device (5) i.e. lever, to adjust the drive with respect to adjustment of the unit such that a material web lying on the bars is shifted towards the axis. The connecting device makes adjustments of the control drive and the shifting unit with each other in a certain ratio that is variably adjusted. The connecting device adjusts the unit with respect to pivoting around a pivot axis (D) relative to a fixed part (10).

Description

The present invention relates to a device for regulating the lateral displacement of at least one material web comprising a roller rotatably mounted about an axis.

In certain applications, particularly in the textile industry for the manufacture or processing of textile webs, the roller comprises battens which extend in the direction of the axis and are arranged in the circumferential direction of the roller. The slats can be moved in this case in the direction of the axis, so that a displacement of the slats results in a lateral displacement of the material web, for example, for web guide or Bahnausstreifung. Such a device is for example in DE 100 60231 C1 or in EP 1 149 790 A2 disclosed.

Summary of the invention

A device for controlling the lateral displacement of at least one material web comprises at least one roller rotatably mounted about an axis, which comprises slats which extend in the direction of the axis and are arranged in the circumferential direction of the roller, each slat being displaceably mounted in the direction of the axis. The apparatus further comprises at least one slat shifting means for displacing the slats in the direction of the axis, and at least one actuator. The actuator is connected to the slat displacement means by at least one connecting means such that an adjustment of the actuator results in an adjustment of the slat displacement means to offset the at least one resting on the slats web during operation in the direction of the axis. The connecting means is adapted such that the adjustment of the Actuator and the adjustment of the slat displacement means in a certain ratio (also called adjustment ratio V) to each other.

According to the invention, the ratio is variably adjustable. The variable setting of the ratio allows individual adaptation to the particular application of the device. It can thus different strengths or gains of the lateral displacement can be achieved with otherwise the same control of the actuator. In particular, the strength or reinforcement of the lateral displacement can thus be adapted in a simple manner to the type of material web, for example textile web or rubber web.

The relationship can be through
V = Adjustment of actuator: Adjustment of slat shifting device
be designated. The ratio may be less than or equal to 1 and / or greater than or equal to one. For example, the ratio may be in the range from 1: 1 to 1:10, in particular 1: 1 to 1: 5, and / or in a range from 10: 1 to 1: 1, in particular 5: 1 to 1: 1 , The ratio may be discrete or continuously adjustable. In addition, the ratio may be while the roller rotates or be constant during operation of the device or be variably adjustable.

The device may further comprise a detection means for detecting the position of the material web, for example an edge sensor and / or a camera. Also, the device may include a control means for controlling the lateral displacement. The control device can be connected to the detection means and the actuator. The control device can evaluate signals of the detection means and control the actuator accordingly to regulate the lateral displacement of the material web. In this case, by varying the ratio, the amount of lateral offset gain can be varied and controlled, with detection by the detection means and actuation of the actuator by the controller unchanged. This allows a simple change in the strength or amplification of the lateral displacement.

The connecting means may be adapted such that the adjustment of the actuator results in a pivoting of the connecting means about a pivot point relative to a stationary part of the device. In this case, the connecting means may be adapted such that the ratio is defined by a first lever arm between the actuator and the pivot point and a second lever arm between the pivot point and the slat shifting means. The connecting means may be a pivot lever. The pivot lever may be connected at one end to the actuator and connected at another end to the slat shifting means. The connection of the connecting means with the actuator may be fixed or articulated. The connection of the connecting means to the slat shifting means may be solid or articulated. This structure with pivot lever allows easy and cost-effective adjustment.

The device may comprise at least one adjustment means for adjusting the ratio. The adjustment means may be adapted to shift the pivot point of the connection means. The adjustment means may be adapted to translate the pivot point in a direction perpendicular to the axis.

A displacement of the pivot point can be achieved in that the adjusting means comprises at least one recess in the connecting means, by which at least two different pivot points can be defined. The adjusting means may further comprise at least one fastening means, for example a bolt or a screw with locking ring. The connecting means may be pivotally connected by means of the fastening means through the at least one recess with a fixed part of the device. This structure enables a simple and inexpensive way of adjusting the ratio.

The adjusting means may be adapted to displace the pivot point of the connecting means by a removable bolt connection. In this case, the bolt connection allows the pivoting of the connecting means about the pivot point relative to a fixed part the device. This structure allows a simple and inexpensive way of pivoting.

The adjusting means may comprise a recess in the form of a slot through which at least two different pivot points are defined. This allows the ratio to be continuously adjustable.

Alternatively, the adjusting means may comprise at least two recesses in the connecting means, by which at least two different pivot points are defined, namely a pivot point is defined by a respective recess. In this case, the adjusting means may further comprise at least two recesses in the fixed part of the device. The connecting means may then be pivotally connected to the fixed part of the device such that the fastening means is disposed through one of the recesses in the fixed part and a corresponding recess in the connecting means. So the ratio can be set discretely.

For shifting the slats in the direction of the axis, the slat shifting means may comprise at least one support means for each slat. The bearing means may be adapted such that each lath is slidably mounted in the direction of the axis. The slat shifting means may further comprise at least one steering wheel. The steering wheel can cooperate with the bearing means of the slats such that an adjustment of the steering wheel results in a displacement of at least one of the slats in the direction of the axis. The steering wheel can be arranged in a plane perpendicular to the axis. An adjustment of the steering wheel is then a pivoting of the steering disc to the axis. The slat shifting means may be disposed in the interior of the roller. This allows a compact design.

The storage means of a slat may comprise at least two rollers. The rollers can be ball-bearing, so that a lower friction and thus a low wear occurs. This is particularly advantageous in a dry environment, such as tire manufacturing. Alternatively, the roles can also be slippery, for example, in a wet environment, such as in textile production. In addition, the rollers may be lightweight castors having a reduced rolling resistance so that a low friction slidable mounting of the slats is possible. The rollers may have a curved (crowned) tread. This allows that when adjusting the steering wheel, the rollers always optimally contact the steering wheel.

The rollers may be connected to the bar and be arranged on the two sides of the steering disc in the direction of the axis such that the bar is displaceable in the direction of the axis. The displacement of the slat displacement means may thus be a pivoting of the steering disc and a displacement of the rollers in the direction of the axis, so that the bar is displaced in the direction of the axis. By providing the rollers on both sides of the steering wheel, it is possible that the rollers do not have to be braked when the direction of lateral displacement reverses in the direction of the axis. Thus, a wear of the rollers is reduced and therefore increases the life of the device.

The actuator can be adapted so that the adjustment of the actuator takes place in a direction substantially parallel to the direction of the axis. For example, the actuator can be a linear actuator with a linear actuator. The actuator can be operated electrically, hydraulically or pneumatically. The actuator can be arranged within a housing of the device, so that it is not directly accessible from the outside and thus protected.

The roller may comprise at least one slat guide on which the slidable slats are guided, the slat guide comprising for each of the slats a corresponding slat guide section. The roller may comprise at least one slat securing means adapted to secure the slats against detachment of the slats from the device upon failure of the respective slat guide sections, the slat securing means comprising a respective slack securing section for each of the slats. It is thus ensured a higher safety of the device during operation. In particular, you can Machine damage and injury to operating personnel can be avoided by slipping off of the high speed rotating roller.

The slats can be continuous. Alternatively, the slats may be split, each slat comprising a first slat area and a second slat area in the direction of the axis, wherein the first slat area and the second slat area are slidable relative to each other (split slats).

In the case of split battens, the roller may comprise at least one protection means for a batten disposed between the first batten region and the second batten region inside the batten, and is adapted to provide a gap between the first batten region and the second batten region in the direction of the axis bridged. It is thus ensured a higher safety of the device during operation. In particular, injuries to the operator can be avoided or reduced by accidental intervention of the operator, for example, with the finger, in the gap between the first and the second lath area and it can also no other items, such as insertion aids (eg straps or ropes) in the Gap.

The roller may comprise a roller body, for example a tube, on which the slats can be guided. The roller or the roller body can be rotatably supported by roller bearing means about the axis. The roll bearing means may be located outside of the area of the roll enclosed by the slats (outside the interior of the roll) and / or outside of the fixed part of the apparatus so as to allow easier maintenance or replacement of the roll support means without dismantling the apparatus.

The device can be operated continuously. This has the advantage that the production process is accelerated and thus costs are saved. Alternatively, the device can be operated discontinuously, for example with stop intervals for cutting the material web.

The material web can be, for example, a textile web, a paper web, a plastic web or a rubber web, in particular for the production of tires.

The present invention also relates to a tire-building or tire-working equipment which comprises one of the above-described devices for regulating the lateral displacement of at least one material web.

Brief description of the figures

Fig. 1

shows a perspective view of the device with a roller in a first construction;

Fig. 2

shows a perspective view of one end of the device;

Fig. 3

shows a cutaway side view of one end of the device;

Fig. 4

shows a cross section of a roller;

Fig. 5a

shows a cross section of a lath;

Fig. 5b

shows a cross section of a slat guiding means

Fig. 5c

shows a cross section of a lattice securing agent;

Fig. 6

shows a perspective view of a part of the roller in a second construction;

Fig. 7

shows a side view of the in Fig. 6 represented part of the roller in a second construction;

Fig. 8

shows a cutaway side view of the in Fig. 6 represented part of the roller in a second construction;

Fig. 9a

shows a cross section of a protective means;

Fig. 9b

shows a side view of a protective means;

Fig. 9c

shows a plan view of a protective means;

Fig. 9d

shows a perspective view of a protective means.

Detailed description of the figures

Fig. 1 shows a perspective view of the device for controlling the lateral displacement of at least one material web. The device comprises a roller 1 rotatably mounted about an axis A. The roller 1 comprises slats 2 which extend in the direction of the axis A and are arranged in the circumferential direction of the roller 1. The slats 2 are slidably mounted in the direction of the axis A. In the in Fig. 1 shown construction seven slats in the circumferential direction of the roller 1 are provided. Generally, the number of slats depends on the diameter of the roll and the width of the slats. In addition, a safety distance should be maintained between the slats 2, so that the slats 2 do not touch each other. However, this safety distance should be low enough so that the material web can rest well on the roller and so that no injuries to the operator by intervention in the space between the arranged in the circumferential direction of the roller slats can occur. The slats can be made, for example, of metal, in particular stainless steel. The slats may have a coating which is adapted to the particular application.

In a first construction of the roller, the slats may be continuous, as in FIG Fig. 1 shown. In this construction, a web guide can be made possible in that the material web is offset laterally and thus there is a change in the positional position of the material web. The material web can be guided exactly in this way. It can be a regulation to the center of the web or a regulation by web edge. The two ends of the roller can both be connected to a single actuator.

In a second construction of the roller, the slats may be divided, as in FIG Fig. 6 to 8 shown. Here, each slat 2 has a first slat region 31 and a second slat region 32 in the direction of the axis A, the first slat region 31 and the second slat region 32 being displaceable relative to one another. The division then forms a gap between the first slat region 31 and the second slat region 32. It can be provided a symmetrical division of the slats, in which the slats 2 in the middle of the roller. 1 divided or an asymmetrical pitch of the slats, in which the slats 2 offset from the center of the rollers 1 are divided. In the in Fig. 6 to 8 As shown construction is both a web guide and a Bahnausstreifung possible. In Bahnausstreifung the web is stretched over its width, for example, to prevent the material web folds wrinkles. The two ends of the roller can in this case both be connected to a single actuator, so that the first slat areas 31 and the second slat areas 32 of the slats 2 are displaced by the same actuator. However, the two ends of the roller can also be connected to two different actuators so that the first slat areas 31 and the second slat areas 32 of the slats 2 are displaced independently of each other by different actuators. In the event that two different actuators are provided, the in Fig. 6 to 8 shown construction also be used to control the lateral displacement of two webs independently.

As in Fig. 2 and Fig. 3 1, the roller 1 comprises a roller base 24 in the form of a tube, on which the slats 2 are guided. The roller 1 is rotatably supported by roller bearing means 11 about the axis A. In particular, the roller base body is rotatably supported by the roller bearing means 11 on the fixed part of the device. The roller bearing means 11 are as shown in FIG Fig. 2 can be seen, outside the area of the roller 1 enclosed by the slats 2 and outside of the fixed part 10 of the device (so-called outer storage), so that easier maintenance or replacement of the roller bearing means without disassembly of the device is made possible. However, it may also be provided an inner storage within the roller.

Fig. 2 shows a perspective view of a part of the device and Fig. 3 shows a cutaway side view of the device. In the Fig. 2 and Fig. 3 The device shown comprises a slat shifting means 3 for displacing the slats 2 in the direction of the axis A. Furthermore, the device comprises an actuator 4. The in Fig. 2 and Fig. 3 Slat shifting means shown comprises a steering wheel 7 and for each bar. 2 Bearing means 6. The slat shifting means 3 is arranged in the interior of the roller 1, or the steering wheel 7 and the bearing means 6 are arranged in the interior of the roller 1, that is, within the space enclosed by the slats 2. The actuator 4 is connected to the slat-shifting means 3 by a connecting means 5 such that an adjustment of the actuator 4 results in an adjustment of the slat-shifting means 3 to offset the lying on the slats 2 material web during operation laterally in the direction of the axis A. Here are the adjustment of the actuator 4 and the adjustment of the slat shifting means 3 in a certain ratio (also called adjustment ratio V) to each other.

In the in Fig. 2 and Fig. 3 The apparatus shown results in the adjustment of the actuator 4 in a pivoting of the connecting means 3 about a pivot point D relative to a fixed part 10 of the device. The ratio will thus be defined by a first lever arm between the actuator 4 and the pivot point D and a second lever arm between the pivot point D and the slat shifting means 3. This in Fig. 2 and Fig. 3 illustrated connecting means 5 is a pivot lever. The pivot lever is connected at one of its ends to the actuator 4 by a hinge 12 and connected at the other end to the slat shifting means 3.

The slat shifting means 3 comprises for each slat 2 bearing means 6. In Fig. 2 and Fig. 3 the bearing means 6 is formed in the form of two rollers, so that each bar is slidably mounted in the direction of the axis A. The rollers are lightweight castors which have a reduced rolling resistance, so that a low-friction sliding support of the slats is possible. In addition, the rollers are ball bearings so that less friction and thus less wear occurs. This is particularly advantageous in a dry environment, such as tire manufacturing. Alternatively, however, the rollers may also be slide-mounted, for example in a wet environment, such as in textile production. In addition, the rollers have a curved (crowned) tread. This allows that when adjusting the steering wheel, the two rollers always optimally contact the steering wheel. When rolling with a flat tread would be used, so the distance between the two rollers should be chosen to be larger each other, so that the rollers can not always optimally contact the steering wheel.

In Fig. 2 and Fig. 3 The slat shifting means 3 further comprises a steering disc 7. The connecting means 5 in the form of the pivot lever is fixedly connected to the steering disc 7. The steering disc 7 is - in a starting position - arranged in a plane perpendicular to the axis A, that is, the steering disc 7 forms a right angle with the axis A. An adjustment of the steering disc 7 is therefore a pivoting of the steering disc 7 to the axis A back, the means the steering wheel 7 is - either to the right or to the left in the direction of the axis A - placed at an angle less than 90 ° to the axis A. The steering disc 7 interacts with the rollers of the slats 2 such that an adjustment of the steering disc 7 results in a displacement of the slats 2 in the direction of the axis. The belonging to a bar 2 roles are firmly connected to the bar 2. The rollers are arranged on the two sides of the steering wheel 7 in the direction of the axis A, so that the bar 2 is displaceable in the direction of the axis A. As the roller 1 rotates, the rollers so rotate around the steering wheel 7 in the circumferential direction. The displacement of the slat displacement means 3 here is thus a pivoting of the steering disc and a displacement of the rollers in the direction of the axis A. By providing the rollers on the two sides of the steering disc 7 is allowed that the rollers do not have to be braked when the direction the lateral displacement reverses in the direction of the axis. Thus, a wear of the rollers is reduced and therefore increases the life of the device.

Alternatively, the bearing means of a lath could comprise only one roller, which is connected to the batten and which is arranged between two steering discs, wherein a clearance between the roller and the steering discs is provided. In this case, however, the roller is braked when the direction of lateral displacement reverses in the direction of the axis, and thus a higher wear of the roller occurs.

The in Fig. 2 and Fig. 3 shown actuator 4 is a linear actuator with a linear adjustment and is arranged such that the adjustment of the actuator 4 takes place in a direction substantially parallel to the direction of the axis A. The actuator can be operated electrically, hydraulically or pneumatically. The actuator 4 is disposed within a housing of the device or the fixed part of the device, so that it is not directly accessible from the outside and thus protected.

In the in Fig. 2 and Fig. 3 The adjusting means 8 is adapted to displace the pivot point D of the connecting means 5 (or the pivoting lever) in a direction perpendicular to the axis A. The displacement of the pivot point D thereby becomes achieved that the adjusting means 8 comprises at least one recess in the connecting means 5, by which, as in Fig. 2 and Fig. 3 represented, different pivot points D are defined. The adjusting means 8 further comprises a fastening means 9, for example in the form of a bolt or a screw with locking ring. The connecting means 5 is pivotally connected by means of the fastening means 9 through the recess or recesses with the fixed part 10 of the device. As in Fig. 2 illustrated, the adjusting means 8 also includes recesses in the fixed part 10 of the device. The connecting means 5 is here pivotally connected to the fixed part 10 of the device by the fastening means 9 through one of the recesses in the fixed part 10 and a corresponding recess in the connecting means 5 is arranged. The pivot point D of the connecting means 5 can be displaced by a detachable bolt connection so as to variably set the displacement ratio. The bolt connection allows the pivoting of the connecting means 5 about the pivot point D relative to a fixed part 10 of the device. This structure provides a simple and inexpensive way of pivoting and a simple and inexpensive adjustment of the ratio available.

This in Fig. 2 and Fig. 3 Adjusting means 8 shown comprises three recesses in the connecting means 5 and three corresponding recesses in the fixed part 10 of the device, by which three different pivot points D are defined, so that the adjustment ratio can be set discretely. However, only two pivot points or recesses or more than three pivot points or recesses may be provided. A pivot point D is defined by a respective recess.

Alternatively, the adjusting means 8 may comprise only a single recess in the form of a slot through which different pivot points D are defined. This allows the ratio to be continuously adjustable.

In the in Fig. 2 and Fig. 3 As shown, prior to operation of the device, the detachable bolt connection can be manually arranged in another recess and thus displaced. The displacement ratio is constant while the roller 1 rotates or during operation of the device. However, it is also conceivable that the adjustment ratio is variably adjustable while the roller rotates or during operation of the device, for example by a drive or automatically by a controller.

In the in Fig. 2 and Fig. 3 The adjustment ratio is usually smaller than 1, usually in a range of 1: 1-1: 5, about 1: 1 or 1: 2. Only as an example, with a ratio of 1: 2 and an adjustment of the actuator of 0.5 mm, the adjustment of the slat shifter (or the rollers and thus also the slats) 1.0 mm. For example, the ratio can be adjusted from 1: 1 to 1: 2 or vice versa.

Due to the variable adjustability of the adjustment ratio, different strengths or reinforcements of the lateral displacement of the slats 2 can be achieved with otherwise identical control of the actuator 4. Thus, the strength or amplification of the lateral displacement of the slats 2 in a simple manner to the type of material web, For example, textile or rubber track, be customized and an individual adaptation to the respective Application of the device is made possible by the variable adjustment of the ratio.

Fig. 4 shows a cross section of a roller. The roller 1 comprises a slat guide means 20 on which the slidable slats 2 are guided. The slat guide is also in Fig. 2 . Fig. 3 and Fig. 6 shown. The slat guide means 20 comprises a respective slat guide section 21 for each of the slats 2.

The roller 1 comprises in Fig. 4 a slat securing means 22 which is adapted to secure the slats 2 against detachment of the slats 2 from the device upon failure of the respective slat guiding regions 21. The slate securing means 22 is also in Fig. 6 shown. The slat securing means 22 comprises a respective slat securing area 23 for each of the slats. Thus, a higher safety of the device during operation is ensured. In particular, machine damage and injury to the operating personnel can be avoided by slats 2 detaching from the high-speed rotating roller 1.

In Fig. 4 the corresponding slat securing region 23 for a slat 1 is arranged within the respective slat 2. The lath securing region 23 for a lath 2 here comprises a head region 23a which is suitable for securing the lath 2 against detachment from the device in the event of a defect in the corresponding lath guiding region 21. This allows the head portion 23a of the slat securing means 22 to catch the slat 2 as the slat 2 detaches from the apparatus and is thrown radially as a result of the centrifugal forces. The defect of the slat guide portion 21 may be wear or breakage of the slat guide portion 21 from the slat guide means 20 here.

Fig. 5b shows a cross section of a slat guiding means and Fig. 5c shows a cross section of a lattice securing agent. This in Fig. 5b Slat guiding means 20 shown is annular, and has a substantially star shape. The slat guide means 20 is integrally formed. The Slat guide portions 21 each include a head portion 21a and a neck portion 21b. The head portion 21a is polygonal. The slat guide portion 21 for a slat 2 comprises two recesses 21c between the head portion 21a and the neck portion 21b. The recesses 21 c are adapted to slidably receive the slat 2 to guide the slat 2 on the slat guide means 20. In this case, a clearance between the slat 2 and slat guide region 21 is preferably provided in the region of the recess 21c, so that the slat 2 can be slidably received. The batten 2 and the slat guide portion 21 are arranged such that detachment of the slat 2 from the device during normal operation is prevented.

This in Fig. 5c shown slate securing means 22 is annular and has a substantially star shape. The slat securing means 22 is integrally formed. The slat securing means includes slat securing portions 23 each including a head portion 23a and a neck portion 23b. The lath securing portion 23 also includes two notches 23c which are larger than the corresponding notches 21c of the lath guide portion 21. This allows the lath securing means 22 to catch the lath 2 as the lath 2 disengages from the device. It is also prevented that the slat 2 and the slate securing means 22 come into contact during normal operation of the device, that is, when there is no defect of the slat guide portion 21.

In the in Fig. 4 As shown, the slat guide means 20 is made of a first material, such as plastic, and the slat securing means 22 is made of a second material, such as metal, which has a higher hardness and / or abrasion resistance than the first material. In particular, plastic is suitable for guiding the displaceable slats 2, and metal is suitable for securing the slats 2 against detachment of the slats 2 from the device in the event of the defect of the corresponding slat guide regions 21. However, plastic has a higher wear than metal. Wear can occur for example due to excessive web tension and a corresponding bending of the geometry or the cross section of the slats. Thus, there is an increased risk that the recesses 21 c of the slat guide portion 21, which the Latte 2 slidably absorb by wear to the extent that the bar 2 can be detached from the device, or there is a risk that it even comes to cancel the whole or at least a sufficient part of the slat guide area 21, so that the bar 2 from the device can solve.

• einen mittleren Auflagebereich 2a zum Aufliegen der mindestens einen Materialbahn,
• einen Seitenbereich 2b an jeder Seite des mittleren Auflagebereiches 2a, bezüglich einer in radialer Richtung verlaufenden Senkrechten S, und
• einen Haltebereich 2c angrenzend an jeden der Seitenbereiche 2b, wobei der Haltebereich 2c im Wesentlichen im rechten Winkel (wie z.B. 90° ± 10°) zu der Senkrechten S verläuft.

Fig. 5a shows a cross section of a crossbar 2. The crossbar 2 is polygonal in cross section. In particular, the crossbar 2 can comprise the following areas in cross section:

• a middle support region 2a for resting the at least one material web,
• a side region 2b on each side of the central support region 2a, with respect to a vertically extending vertical S, and
• a holding portion 2c adjacent to each of the side portions 2b, wherein the holding portion 2c extends at substantially right angles (such as 90 ° ± 10 °) to the perpendicular S.

The vertical S is, as in Fig. 4 shown, through the center of the roller 1 (or the axis A) and the center of the central support area 21 a of the bar 2 extending straight line. The bar 2 is symmetrical with respect to the vertical S.

As in Fig. 5b The recesses 21c extend substantially at right angles (such as 90 ° ± 10 °) to the vertical S. The recesses 21c are adapted to support the retaining portions 2c of FIG Latte 2 - which also extend substantially at right angles to the vertical S - slidably accommodate to guide the bar 2 on the slat guide means 20. The holding portions 2 c and the recesses 21 c are therefore arranged such that a detachment of the bar 2 is prevented by the device in the radial direction during normal operation.

As in Fig. 6 The device comprises at least one protection means 30 for a slat 2, which is arranged between the first slat region 31 and the second slat region 32 in the interior of the slat 2. The protection means 30 bridges a gap 33 between the first slat portion 31 and the second slat portion 32 in the direction of the axis A. Thus, a higher safety of the device is ensured in operation. In particular, injuries to the operating personnel can be avoided or reduced by accidental intervention of the operating personnel, for example with the finger, in the gap 33 between the first and the second bar area and no other objects, such as insertion aids (eg straps or ropes), in get the gap. If the thickness of the bar is low, for example in the range of 0.5 to 3 mm, in particular about 1.5 mm, then an accidental intervention of the operator only leads to minor injuries, such as slight bruising of the finger. The protection means 30 in this case prevents serious injury, such as loss of all or a significant portion of the finger.

The gap 33 between the first slat portion 31 and the second slat portion 32 may be substantially S-shaped, as in FIG Fig. 6 and Fig. 7 shown. The first slat portion 31 and the second slat portion 32 each include a protrusion 31 a, 32 a extending in the direction of a longitudinal axis of the slat 2. The protrusion 31 a of the first slat portion 31 and the protrusion 32 a of the second slat portion 32 are arranged to each other such that the substantially S-shaped gap 33 is formed between the first slat portion 31 and the second slat portion 32. The protrusion 31 a of the first slat portion 31 and the protrusion 32 a of the second slat portion 32 each extend only over a part of the width of the slat 2 and are arranged on opposite sides with respect to the longitudinal axis of the slat 2. Since the gap 33 is substantially S-shaped, optimum guidance of the split slats 2 on the roll 1 and optimum guidance of the slat regions relative to one another can be achieved. Alternatively, the gap may also be straight so that the first slat area and the second slat area can be butted against each other.

As in Fig. 6 shown, the protective means 30 may be a fitting. The protection means 30 has such an outer shape and length that the protection means 30 can be arranged floating inside the slat 2. In particular, the protective means 30 has an outer shape which is adapted to the contours of the slat 2. This allows the protection means 30 to move in the direction of the axis A in the interior of the slat 2 so as to bridge the gap 33 between the first slat portion 31 and the second slat portion 32 in the direction of the axis A. Due to the shape and / or length of the protection means 30, no additional attachment of the protection means 30 to the device is required.

Alternatively, the protection means may also be fixedly connected to a part of the device. For example, the protective means may be attached to either the first slat area or the second slat area of the slat. If the roller, as in Fig. 2 As shown, a roller body 24, for example a tube, on which the slats 2 can be guided, the protection means may be fixed to the roller body.

This in Fig. 6 . Fig. 7 and Fig. 8 shown protection means 30 has a length which is greater than a maximum gap 33 between the first slat portion 31 and the second slat portion 32, or the length of the protection means 30 is greater than a maximum displacement of the first slat portion 31 and the second slat portion 32 in opposite directions during operation. Thus, it is ensured that operator injury due to accidental intervention of the operator in the gap 33 at any time during operation of the device can be avoided or reduced and that no other objects can get into the gap, since the protection means 30 at any time in operation the device bridges the gap.

• einen mittleren Bereich 30a, welcher geeignet ist die Lücke 33 zwischen dem ersten Lattenbereich 31 und dem zweiten Lattenbereich 32 in Richtung der Achse A zu überbrücken, und
• einen Seitenbereich 30b an jeder Seite des mittleren Bereiches 30a bezüglich einer Senkrechten S.

As in Fig. 6 and Fig. 9a shown d , the protective means 30 comprises in cross-section the following areas:

• a central portion 30a which is adapted to bridge the gap 33 between the first slat portion 31 and the second slat portion 32 in the direction of the axis A, and
• a side portion 30b on each side of the central portion 30a with respect to a vertical S.

The vertical S passes through the center of the central region 30a of the protection means. When the protection means 30 is arranged in the slat 2, the perpendicular S extends in the radial direction through the center of the roller 1 and the center of the central region 30a of the protection means 30. The in Fig. 9a represented by cross-section is to ensure that the protective means 30 bridges the gap 33 at any time during operation of the device, and an optimal, in particular floating, arrangement of the protection means 30 provided within the bar 2 becomes.

The movement of the protective means 30 in the direction of the axis A may be limited so that the protective means 30 does not slip through the bar 2 in the direction of the axis A and then the gap 33 can no longer bridge. This in Fig. 9a, Fig. 9b and Fig. 9d shown protection means comprises a nose 34 which is adapted to limit a movement of the protective means 30 in the direction of the axis A. The nose 34 extends across the width of a side region 30b of the protection means 30 and is arranged outside the center of the protection means in the longitudinal direction. As in Fig. 8 shown, the nose 34 is disposed within the gap 33. The thickness or height of the nose 34 is in the region of the thickness or slightly larger than the thickness of the slat 2. The width of the nose is equal to or smaller than the minimum adjustable distance between the first slat portion 31 and the second slat portion 32 in the direction of the axis A. The nose 34 is disposed on the axis A side facing the protection means 30. The nose 34 allows the movement of the protection means 30 in the direction of the axis A to be limited. Additionally or alternatively, at least one lug on the side facing away from the axis, the side which faces the material web, may be arranged. This nose can then have a shape that corresponds to the shape of the gap.

This in Fig. 9a - protective means 30 d shown has an outer shape corresponding to the contours of the support portion 2a, the side portions 2b and 2c of the retaining portions of the slat. 2 By this outer shape of the protection means 30, an optimal, in particular floating, arrangement of the protection means 30 can be provided within the bar 2 and it is ensures that the protective means bridges the gap 33 at any time during operation of the device, while minimizing friction between the protective means 30 and the bar 2.

This in Fig. 6 to 9 Protective means 30 shown is made of plastic. This allows a cost-effective production, and at the same time the noise is minimized by the arranged in the bar 2 protection means 30. The protection means 30 may also be made of a different material suitable for enabling cost-effective manufacture, minimizing noise and / or minimizing friction between the guard and the batten.

In the Fig. 1 to Fig. 9 shown device is particularly useful in a plant for tire manufacturing or tire processing The web is then a rubber sheet. In a tire manufacturing plant, the speed of the web (eg in the range of 50 m / min) is typically less than the speed of the web in a textile manufacturing line (eg in the range of 200 m / min). Since the tire manufacturing takes place in a dry environment, the device should be adapted accordingly. For example, ball-bearing rollers may be used in the device. Also, a corresponding coating of the slats may be provided, for example, a non-stick coating.

The device may also be operated continuously, that is, the lateral displacement control is performed while the roller is rotating. This is the case, for example, when the device is used in the area of the rewinder, the extruder, and / or the calender in the tire manufacturing plant. Alternatively, however, the device may also be operated discontinuously, that is, the lateral displacement control is performed at stop intervals in which the roller does not rotate. This is the case, for example, when the device is used in the region of the cutting device in the tire manufacturing plant, wherein during the stop intervals the material web is cut by the cutting device.

The device can also be used in other applications, such as in a textile manufacturing or textile processing plant, the web then being a textile web. The apparatus may also be used in a papermaking or papermaking plant, the web then being a paper web, or in a plant for plastic film production or plastic film processing, the web then being a plastic web.

The device may include a detection means (not shown) for detecting the position of the web of material. Also, the apparatus may include control means (not shown) for controlling lateral displacement. The control device is then connected to the detection means and the actuator 4 such that the control device evaluates signals of the detection means and controls the actuator accordingly to regulate the lateral displacement of the material web. The detection means may be a web edge sensor which detects the edge of the material web by means of a light barrier, and / or a camera. However, other types of detection means may be provided.

Claims (15)

Device for controlling the lateral displacement of at least one material web, the device comprising - At least one roller (1) which is rotatably mounted about an axis (A), wherein the roller (1) slats (2) which extend in the direction of the axis (A) and arranged in the circumferential direction of the roller (1) are each slat (2) in the direction of the axis (A) is slidably mounted, - At least one slat shift means (3) for moving the slats (2) in the direction of the axis (A), and - At least one actuator (4) which is connected to the slat displacement means (3) by at least one connecting means (5) such that an adjustment of the actuator (4) in an adjustment of the slat displacement means (3) results in the at least one on the To move slats (2) laterally in the direction of the axis (A) during operation,
wherein the connecting means (5) is adapted such that the adjustment of the actuator (4) and the adjustment of the slat displacement means (3) in a certain ratio (V) to each other, wherein the ratio (V) is variably adjustable. Apparatus according to claim 1, wherein the connecting means (5) is adapted such that the adjustment of the actuator (4) results in a pivoting of the connecting means (5) about a pivot point (D) relative to a fixed part (10) of the device. Device according to claim 2, wherein the connecting means (5) is adapted such that the ratio (V) is defined by a first lever arm between the actuator (4) and the pivot point (D) and a second lever arm between the pivot point (D) and the slat shifting means (3) is defined. Apparatus according to claim 2 or 3, further comprising at least one adjustment means (8) for adjusting the ratio (V), the adjustment means (8) being adapted to displace the pivot point (D) of the connection means (5). Apparatus according to claim 4, wherein the adjusting means (8) comprises at least one recess in the connecting means (5) defining at least two different pivot points (D), and wherein the adjusting means (8) comprises at least one fixing means (9) the connecting means (5) by means of the fastening means (9) by the at least one recess with a fixed part (10) of the device is pivotally connected. Apparatus according to claim 5, wherein the adjusting means (8) comprises at least two recesses in the fixed part (10), the connecting means (5) being pivotally connected to the fixed part (10) such that the fixing means (9) passes through one of the Recesses in the fixed part (10) and a corresponding recess in the connecting means (5) is arranged. Device according to one of claims 2 to 6, wherein the adjusting means (8) is adapted to displace the pivot point (D) in a direction perpendicular to the axis (A). Device according to one of the preceding claims, wherein the connecting means (5) is a pivot lever. Device according to one of the preceding claims, wherein the lath displacement means (3) comprises at least one bearing means (6) for each lath (2) which is adapted such that each lath (2) is slidably mounted in the direction of the axis (A). Apparatus according to claim 9, wherein the slat-shifting means (3) comprises at least one steering disc (7), wherein the steering disc (7) cooperates with the bearing means (6) of the slats (2) such that an adjustment of the steering disc (7) in a displacement at least one of the slats (2) in the direction of the axis (A) results. Apparatus according to claim 9 or 10, wherein the bearing means (6) of a bar (2) comprises at least two rollers which are connected to the bar (2) and on the two sides of the steering disc (7) in the direction of the axis (A) are arranged, that the bar (2) in the direction of the axis (A) is displaceable. Apparatus according to claim 10 or 11, wherein the steering disc (7) is arranged in a plane perpendicular to the axis (A) and wherein an adjustment of the steering disc (7) is a pivoting of the steering disc (7) to the axis (A) out. Device according to one of the preceding claims, wherein the actuator (4) is adapted such that the adjustment of the actuator (4) takes place in a direction substantially parallel to the direction of the axis (A). Device according to one of the preceding claims, wherein the actuator (4) is a linear actuator with a linear displacement. Plant for tire manufacturing or tire processing, comprising a device according to one of the preceding claims.

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