EP1997762B1 - Device for winding and unwinding thread-like winding material - Google Patents

Abstract

The device has a guiding unit (20) that is movable to and fro on a guiding axle (22) in a longitudinal direction of the guiding axle. A winding drum (10) is rotatably supported around a rotation axis (12). A blank holder (40) is formed to be tiltable between two positions, where the blank holder presses a winding material (30) on an outer circumference (24) of the guiding unit in one of positions. The blank holder exhibits a larger distance to the outer circumference of the guiding unit during winding the winding material in another position, where the blank holder is designed as a cover.

Description

The invention relates to a device for winding and unwinding of strand-like winding material, wherein the device comprises a winding drum rotatably mounted about a rotation axis, provided with a cross thread, spaced from the axis of rotation guide axis, on the guide axis in the longitudinal direction of the guide axis back and forth movable guide element and has a hold-down, which presses the winding material on the outer circumference of the guide element at least when rolling the winding material on the winding drum and wherein the guide element is formed as a guide roller, which guides the winding material during winding and unwinding, wherein the winding material during winding and unwinding by frictional engagement with the guide roller engages and these are set in a rotational movement about the guide axis.

From the DE-G 85 26 244 For example, a cable drum for an electric cable is known, which is a rotatable Having mounted winding drum and a guide member which is slidably disposed along a guide axis. In this case, the guide axis is arranged parallel to the axis of rotation of the winding drum. In order to achieve guidance of the winding material, the guide element must be manually moved back and forth along the guide axis. In addition, the winding material grinds both during winding and unwinding over the U-shaped design guide element and a handle axis forming the handle. As a result, an increased wear of the winding material occurs. In addition, the guide element must be manually moved back and forth.

Furthermore, from the DE-G 94 01 104 a hose carriage is known, which has a along a threaded rod designed as a guide axis and forth movable guide element. The winding drum is movable via a hand crank. About gear wheels and a power transmission belt, the guide shaft is rotated in response to the winding drum in rotation and thus causes a displacement of the guide element along the guide axis. This device has the disadvantage of a very complex construction.

A device for winding and unwinding of strand-like winding material of the type mentioned is from the DE 103 00 960 A1 known. In the known device, the hold-down device is designed as a simple rod, which is arranged at a fixed distance from the outer circumference of the guide element. Although it is mentioned in this document that the distance of the hold-down to the guide axis and to the outer periphery of the guide element is adjustable. However, this only serves to adapt the hold-down to winding material of different thickness and thus jumping out of the winding material optimally prevent. The distance of the holddown is at most once adapted to the thickness of the winding material and remains unchanged over the entire useful life of the device, since the wound on the winding drum winding material over the useful life of the device is usually not replaced, especially not exchanged for a winding material with a different thickness becomes. It is not contemplated to adjust the hold-down during the useful life of the device, eg. For easier unwinding of the winding material. That would not even be possible in the known device, since only a retaining element of the blank holder would have to be solved by means of a suitable tool in a time-consuming procedure.

The object of the invention is to design and further develop a device of the type mentioned, on the one hand keeps the winding material during reeling safely and reliably on the outer circumference of the guide member and on the other hand also facilitates the unwinding of the winding material.

Based on a device of the type mentioned, the object is achieved in that the hold-down is formed pivotable between two positions, namely a first position in which the hold-down presses the winding material on the outer periphery of the guide member and a second position in which the hold-down a greater distance from the outer periphery of the guide member than in the first position.

Advantages of the invention

The invention makes it possible during the winding of the winding material to the hold-down in the first position bring and to push the winding material on the guide element, so that it is safely and reliably brought into a rotational movement and reciprocated on the guide shaft. The winding material is rolled up evenly distributed on the winding drum. For unwinding of the winding material of the hold-down is simply brought into the second position, that is, the distance between downholder and outer peripheral surface of the guide element increases. As a result, the winding material can be handled much easier and faster from the winding drum, especially when it is simply pulled to unwind at the unwound end of the winding material. For unwinding, the winding material can be removed completely from the guide element and at the end of unwinding easily reinserted into the guide element, wherein the increased distance between hold-down and guide element greatly simplifies the removal of the winding material and insertion into the guide element. Alternatively, the winding material can be easily left in the guide element, wherein the greater distance between hold-down and guide element allows easier and faster unwinding of the winding material. This is achieved in particular by the fact that the winding material does not rub against the hold-down device and / or the peripheral surface of the guide element in the second position of the hold-down device, but can be unwound almost without resistance.

According to the invention, the hold-down is formed as a cover, which covers an upper peripheral portion of the guide member. This protects the area of the guide shaft and / or the guide roller against dirt and moisture from above. This always ensures a smooth reciprocation of the guide element on the guide shaft. This is Especially when using the device according to the invention in dirt and moisture endangered areas, eg. On a construction site or in the outdoor area of importance.

Advantageously, when viewed from above, the cover completely covers at least the guide axis. It makes sense, at least the areas of the guide axis should be covered, which sweeps over the guide element during its reciprocating motion. This embodiment therefore relates in particular to the width of the proposed cover. Preferably, the cover completely covers at least the guide element when viewed from above. This embodiment therefore particularly concerns the depth of the proposed cover. Preferably, the cover is curved in the manner of a cylinder jacket portion, wherein the imaginary longitudinal axis of the cylinder jacket is parallel to the guide axis.

According to a preferred embodiment, it is proposed that the hold-down device between the first and the second position is pivotable about a pivot axis which extends substantially parallel to the guide axis.

To ensure that the hold-down presses the winding material safely and reliably on the outer peripheral surface of the guide roller, it is proposed that the hold-down device is releasably held at least in the first position. Advantageously, the hold-down is releasably held at least in the first position by means of a latching or snap connection. Preferably, the device has at least one support or holding element, on which the guide axis is fastened and on which the hold-down device is detachably held, at least in the first position. It is suggested that on the support or Holding element is formed at least one resilient projection which engages at least in the first position of the blank holder with a corresponding, formed on the hold-down recess. According to a preferred embodiment, the resilient projection comprises a bore formed in the support or retention element and a ball held in the bore under spring loading.

According to another advantageous embodiment of the invention, it is proposed that the external thread is configured as a cross thread and the cross thread comprises a left-hand thread with a first pitch angle and a right-hand thread with a second pitch angle.

The device makes it possible, for example, to wind and unwind a cable particularly uniformly, by automatically guiding the guide element back and forth over the width of the winding drum during the winding-up or unwinding of the cable. When winding the winding material is evenly distributed on the winding drum. Thus, on the one hand, the so-called winding space available on the winding drum is optimally utilized. On the other hand, it is prevented that on the winding drum entanglements arise such that when unwinding the winding material, a winding is superimposed by a subsequent so that the unwinding is made difficult at this point.

The guide element is designed as a guide roller. In addition, the guide roller on the inner circumference on a rotor which is rotatable about an aligned perpendicular to the guide axis axis of rotation. In this case, an internally threaded portion is formed on the directed to the guide axis surface of the rotor. The internally threaded portion formed on the rotor enables the guide roller on the guide shaft to be moved back and forth along the guide shaft particularly easily by causing the guide roller to rotate about its axis of rotation.

The rotor may assume the first pitch angle and the second pitch angle by rotation about a rotation axis. Reached the rotor and thus the leadership of an outer boundary of the cross thread, the rotor is rotated by a there changing pitch angle of the outer thread of the guide roller along its axis of rotation such that the rotor - and thus the guide roller - a first thread crossing second thread in the now opposite direction to the opposite end of the guide axis follows. This allows in a particularly simple manner, an automatic reciprocating movement of the guide roller when winding and unwinding of the winding material.

Preferably, the first pitch angle has the same amount as the second pitch angle. Thus, the winding material can be particularly evenly wound on the cable drum and. However, it is also conceivable that the pitch angles are different, so that the winding material depending on the direction of movement of the guide member on the guide axis at different speeds, ie different densely wound side by side lying on the winding drum.

Preferably, the outer circumference of the guide roller with the winding material is such frictionally connectable, that the guide roller is brought by the incoming during winding winding material in a rotational movement about the guide axis. This makes it possible in a particularly simple, robust and cost-effective manner to automatically put the guide roller with the winding and unwinding of the winding material in a rotational movement about the guide axis and thus in a reciprocating motion along the guide axis.

Advantageously, the distance of the hold-down to the guide axis in the different positions is adjustable. As a result of this setting possibility, the hold-down device is brought into a first and / or second basic position. Of course, such an adjustable hold-down can be moved between the two basic positions. By adjusting the distance between downholder and outer peripheral surface of the guide element in the first position of the hold-down can be adapted to winding material of different thickness, so that always jumping out of the winding material can be optimally prevented. However, setting the basic position of the hold-down is much more complicated than the almost automatic movement of the hold-down between the various positions. Therefore, the hold-down is set once at the beginning of the service life and adapted to the thickness of the winding material. Thereafter, the setting remains over the entire useful life of the device according to the invention. In contrast, the hold-down is switched at each change between winding and unwinding of the winding material between the positions, preferably for winding in the first position and for unwinding in the second position.

drawings

Other features, applications and advantages of the invention will become apparent from the following description of exemplary embodiments of the invention, which are illustrated in the drawing.

In the drawing show:

FIG. 1

a perspective view of a device according to the invention with a hold-down for the winding material in a first position;

FIG. 1a

a detailed view of the device according to the invention Fig. 1 with the hold-down in a second position;

FIG. 2

a plan view of a device according to the invention;

FIG. 3

a longitudinal section through the guide axis and the guide roller of an embodiment;

FIG. 4

a cross section through the transverse axis and the guide roller;

FIG. 5a

a detail V out Fig. 2 with a snap or latching connection for holding the hold-down in the first position according to a first embodiment in a side view;

FIG. 5b

a detail V out Fig. 2 with a snap or latching connection for holding the hold-down in the first position according to a second embodiment in a side view;

FIG. 6

a plan view from the front of the hold-down in a preferred embodiment with cable cleaner.

In FIG. 1 is the reference numeral 1, a device according to the invention for winding and unwinding strand-like winding material, for example of cables or hoses shown. This comprises a winding drum 10, also referred to as a cable drum, which is mounted on an axis of rotation 12 rotatably mounted on a profile tube 50 and can be set into rotary motion by means of a crank 14. Of course, the winding drum 10 can also be rotated electrically, pneumatically, hydraulically or in another way. At the outer ends of the cable drum 10 side cheeks 11a, 11b are arranged, which prevent lateral slipping of the winding material.

At the cable drum 10 opposite end of the profile tube 50 is provided with a thread 23 guide shaft 22, on which a about the longitudinal axis of the guide shaft 22 rotatable guide roller 20 is mounted. The guide roller 20 has a guide groove 24 on the outer circumference. In addition, a hold-down 40 is shown, which serves as a cover in the form of a Cylinder shell portion is formed. The cover 40 is attached to a pivot axis 90 about this pivotally mounted on the profile tube 50.

In Fig. 1 the cover 40 is shown in its first position in which it presses the winding material 30 on the outer peripheral surface of the guide roller 20. As a result, when winding the winding material 30 causes the roller 20 to rotate about the guide axis 22 and, due to the thread 23, to reciprocate along the guide axis 22 Fig. 1a For example, the cover 40 is shown in its second position, in which it is given away upwards, so that the distance between the cover 40 and the outer periphery of the guide roller 20 is greater than in the first position. More specifically, the side of the cover 40 opposite the pivot axis 90 is at a greater distance from the outer periphery of the guide roller 20 side of the cover 40. The cover 40 may assume the second position, for example, during unwinding of the winding stock 30 from the cable drum 10, especially when unwinding the winding material 30 is simply pulled on the already unwound winding material 30 and the winding drum 10 is thereby set in a rotary motion.

Strictly speaking, the side of the cover 40 lying opposite the pivot axis 90 serves as the actual hold-down for the winding material 30. The remaining part of the cover 40 serves mainly to protect the guide shaft 22 and the guide roller 20 from dirt (eg mortar residues, sawdust, sand, etc.) and moisture (raindrops, water spray, etc.). In order to facilitate the winding of the winding material 30, it is conceivable that the entire side of the cover 40 lying opposite the pivot axis 90 can be rotated about an axis of rotation 46 (cf. Fig. 5 ) is rotatably formed, wherein the rotation axis 46 preferably parallel to the axis of rotation 90 and to the guide axis 22 and / or the axis of rotation 12 of the winding drum 10 extends. For this purpose, for example, a rotatable about the rotation axis 46 roller 48 in the pivot axis 90 opposite side of the cover 40 are integrated.

In order to use the device for winding or unwinding of winding material, the device is held by means of the holding element 60. Alternatively, it is also conceivable to fix the device in a frame provided for this purpose steadfastly.

For example, to wind a cable, the cable 30 is inserted into the guide groove 24 of the guide roller 20. The hold-down 40 is brought into the first position, so that it prevents slipping out of the cable 30 from the guide channel 24 effectively.

If, for example, the cable drum 10 is rotated by means of the crank 14, which is suitable for winding up the cable 30, the guide roller 20 is set into rotary motion by means of the cable 30 and the static friction present between the cable 30 and the guide groove 24.

In this embodiment, it can be clearly seen that a person can hold the cable drum with one hand while operating the crank with the other hand. As a result, for example, an extension cable, which is provided with a plug that is still in a socket, are evenly wound on the way to the socket. This means an increase in comfort and ease of work, since no longer has to go to the socket to remove the plug there and then the cable drum, for example must be held on the ground so that the cable drum can be moved with one hand while the other hand, the cable is guided.

In the FIG. 2 illustrated plan view of a device according to the invention illustrates the emergence of a movement along the longitudinal axis of the guide shaft 22 by the above-described rotational movement of the guide roller 20:

The guide roller 20 is shown in a longitudinal section, so that a rotor 70 is visible, which has an internally threaded portion 71 and by means of a provided with an external thread 84 bolt 80 is adjustable. The guide shaft 22 has a cross thread 23 which has a right-hand thread 23R and a left-hand thread 23L intersecting therewith. At the two ends of the guide shaft 22, the pitches of the left-hand thread 23L and the right-hand thread 23R change so that the profiles of these threads merge into each other.

The guide roller 20 is arranged on the guide shaft 22 such that the internally threaded portion 71 of the rotor 70 is guided in a groove of the cross thread 23. As a result, a rotational movement of the guide roller 20 causes a displacement of the guide roller 20 along the longitudinal axis of the guide axis 22 reaches the guide roller one end of the guide shaft 22 and the runner so far followed, for example, the right-hand thread 23R, so there causes the change in the pitch angle of the outer thread of the guide axis the slider 70 also rotates about its amount about its axis of rotation 86 until it finally assumes the pitch angle of the left-hand thread 23L and is guided by the left-hand thread 23L back to the other end of the guide shaft 22.

The hold-down 40 is in Fig. 2 dashed in its first position to allow a clear view of the underlying components. In the in Fig. 2 V areas are provided with a snap or snap connection to securely and reliably hold the cover 40 in the first position. The snap or locking connection is described below with reference to Fig. 5a and 5b explained in more detail. The snap or locking connection is preferably designed such that the cover 40 when unwinding the cable 30 simply by pulling on the already unwound cable end automatically up to the second position (see. Fig. 1a ) is brought. After unwinding the cover is brought by gentle pressure from above back to the first position and is available for winding the cable 30 ready.

In FIG. 3 is the in FIG. 2 shown section through the guide roller 20 is shown enlarged. An angle 72 lying at the tip of the internal thread section 71 of the rotor 70 is approximately 90 ° here, which allows a particularly good guidance of the internal thread section 71 in the thread 23. The reference numeral 81 denotes a spring which, in cooperation with a pressure surface 82 fastened to the bolt 80, exerts a spring force which can be adjusted by turning the bolt 80 onto the rotor 70. Thereby, a minimum contact pressure of the female threaded portion 71 is ensured to the external thread 23 of the guide shaft 22.

In FIG. 4 is a cross section through the guide shaft 22 and the guide roller 20 is shown. An in FIG. 4 not shown cable 30 is guided in the guide trough 24. An angle 73 of approximately 100 ° denotes the size of a circle segment represented by the rotor 70. Of the Bolt 80, which serves for the adjustment and as an axis of rotation 86 for a rotary movement of the rotor 70 about a fulcrum 85 formed as a recess, is surrounded by the spring 81.

In FIG. 5a the distal end of the profile tube 50 is shown. The cover 40 is shown in its first position. In the bottom of the profile tube 50, a bore 92 is introduced, in which a ball 94 is held spring loaded. The spring is designated by the reference numeral 96. The diameter of the opening of the bore 92 has been at least partially reduced after insertion of the ball 94 such that the ball 94 is held in the bore 92. By pressing on the ball 94 from outside (in the embodiment from below), the ball 94 is pressed against the spring force in the bore 92.

The cover 40 has an extension 42 which is guided downwardly and laterally to below the distal end of the profile tube 50. In the horizontal region of the extension 42, a recess 44 directed in the direction of the profile tube 50 is formed. The recess 44 is positioned so that it is exactly opposite the ball 94 when the cover 40 is in the first position.

When the cover 40 is brought into the first position, the ball 94 is first pressed by the horizontal part of the extension 42 into the bore 92. Once the cover 40 has reached the first position, the ball 94 is pressed by the spring 96 back out and is partially absorbed by the recess 44. The ball 94 and the recess 44 are such in terms of shape and / or surface finish that the cover 40 is securely held in the first position.

In the embodiment of FIG. 5b the bore 92 is formed on the end face of the distal end of the profile tube 50. Accordingly, the extension 42 has only a vertical part and the recess 44 is formed in the direction of the profile tube in the vertical part of the extension 42. Again, the recess 44 is positioned so that it is exactly opposite the ball 94 when the cover 40 is in the first position.

It is further proposed that a cable cleaner 100 be disposed on the cover 40, at least partially surrounding the winding material 30 at least during winding (i.e., when the cover 40 is in the first position). The cable cleaner 100 is guided on the cover 40 so as to follow the reciprocation of the guide roller 20 on the guide shaft 22. It is proposed that on the underside of the cover 40, a guide rail 102 is arranged, on which the cable cleaner 100 is guided back and forth. The cable cleaner 100 is pivoted together with the cover 40 up to the second position. The winding material 30 preferably emerges from the cleaning area of the cable cleaner 100, so that the winding material 30 can then be unwound from the winding drum 10.

As a possible concrete embodiment, a cable cleaner 100 is proposed, which has an annular supporting structure (for example in the form of a wire loop) 104, which is filled with cleaning agents (for example in the form of cleaning bristles) 106. The support or support structure 104 has a passage opening 108 through which the winding material 30 can enter and exit into the interior of the ring or the loop. In FIG. 6 is clearly seen that the cable 30 is surrounded almost over its entire circumference by the cleaning bristles 106 of the cable cleaner 100. In the passage opening 108 also bristles 106 are arranged to prevent inadvertent slipping out of the cable 30.

The reciprocating motion of the cable cleaner 100 may be mechanically coupled to the guide roller 20. For this purpose, the cable cleaner 100 has mechanical gripping elements, which engage around the guide roller 20 on both sides. In this way, movement of the guide roller 20 is transmitted to the cable cleaner 100 via the gripping members. Alternatively, it is also conceivable that the reciprocating motion of the cable cleaner 100 is effected solely by the cable guided therein. The cable 30 is set during rolling by the guide roller 20 in a reciprocating motion. This can cause a reciprocation of the cable cleaner 100 with the cable 30 with a corresponding storage of the cable cleaner 100 in the guide rail 102.

Claims (15)

1. System (1) for the winding and unwinding of thread-like winding material (30), whereby the system (1) comprises a winding drum (10) on a mount that pivots around a rotational axis (12), a guide axis (22) offset from the rotational axis (12) and equipped with a cross winding (23), a guide element (20) that can move back and forth along the length of the guide axis (22), and a downholder (40), in order to press the winding material onto the outer circumference (24) the guide element (20) at least while rolling the winding material (30) onto the winding drum (10), whereby the guide element is implemented as a guide roller (20) and the guide roller (20) guides the winding material (30) during winding and unwinding, whereby the winding material (30) engage with the guide roller (20) by friction during winding and unwinding and sets the guide roller (20) in motion around the guide axis (22), characterized in that the downholder (40) is implemented in such a way that it can pivot between two positions; a first position in which the downholder (40) presses the winding material (30) onto the outer circumference (24) of the guide element (20), and a second position in which the downholder (40) has a greater distance from the outer circumference (24) of the guide element (20) than in the first position, and that the downholder (40) is implemented as a cover which covers an upper circumferential region of the guide element (20).
2. System according to claim 1, characterized in that the cover (40) completely covers at least the guide axis (22) when viewed from above.
3. System according to claim 1 or 2, characterized in that the cover (40) completely covers at least the guide element (20) when viewed from above.
4. System according to one of claims 1 to 3, characterized in that the downholder (4) can pivot between the first and second positions around a pivot axis (90) that runs largely parallel to the guide axis (22).
5. System according to one of claims 1 to 4, characterized in that the downholder (40) is held at least in the first position in such a way that it can be released.
6. System according to claim 5, characterized in that the downholder (40) is held at least in the first position using a ratchet or snap connection (92, 94, 96, 44).
7. System according to claim 5 or 6, characterized in that the system has at least a carrier or holding element (50) on which the guide axis (22) is fastened and on which the downholder (40) is held at least in the first position in such a way that it can be released.
8. System according to claim 7, characterized in that on the carrier or holding element (50) at least one resilient projection (94) is formed, which at least in the first position of the downholder (40) engages with a corresponding depression (44) formed in the downholder (40).
9. System according to claim 7, characterized in that on the downholder (40) at least one resilient projection (94) is formed, which at least in the first position of the downholder (40) engages with a corresponding depression (44) formed on the carrier or holding element (50).
10. System according to claim 8 or 9, characterized in that the resilient projection (94) comprises a bore (92) formed in the carrier or holding element (50) and/or in the downholder (40) and a ball (94) held in the bore (92) under spring force.
11. System according to one of claims 1 to 10, characterized in that the cross winding (23) comprises a left-handed thread (23L) with a first slope angle (L) and a right-handed thread (23R) with a second slope angle (R).
12. System according to one of claims 1 to 11, characterized in that the system is equipped with a cable cleaner (100) which at least partly surrounds the winding material (30) at least in the first position of the downholder (40) and follows the back and forth movement of the winding material (30) across the rotational axis (12) during winding.
13. System according to claim 12, characterized in that the cable cleaner (100) has a roughly ring-shaped carrier or support structure (104) which surrounds the winding material and has cleaning brushes (106) on its inner side oriented in the direction of the outer circumferential surface of the winding material (30).
14. System according to claim 13, characterized in that the ring-shaped carrier or support structure (104) has a penetrating opening (108) through which the winding material (30) can enter into the interior of the carrier or support structure (104) and then leave the interior again.
15. System according to one of claims 12 to 14, characterized in that the cable cleaner (100) is guided on the downholder (40) in such a way that it can be moved back and forth.

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