EP1626823A2

EP1626823A2 - Holding device

Info

Publication number: EP1626823A2
Application number: EP04734173A
Authority: EP
Inventors: Franz Krasser
Original assignee: E-Ventures Blechschnittsystem GmbH; VENTURES BLECHSCHNITTSYSTEM GM
Current assignee: e-ventures automation GmbH
Priority date: 2003-05-23
Filing date: 2004-05-21
Publication date: 2006-02-22
Anticipated expiration: 2024-05-21
Also published as: WO2004103598A3; DE502004004443D1; EP1626823B1; ES2291878T3; EP1479459A1; AT414219B; DE20309739U1; ATE367873T1; ATA8032003A; WO2004103598A2

Abstract

The machine has a pair of side rails (40) carrying a transport frame (41) for a coil spindle (4), and there are bearing blocks (43) at intervals along the rails. There are U-shaped frames (5) with clamps which grip stub axles (9) on the ends of the spindles. There are guides for the metal strip leaving the reels.

Description

Holding device 1

The invention relates to a holding device for the end of a sheet web wound into a coil according to the preamble of claim 1.

Problems arise when handling wound sheet metal webs, in particular when feeding sheet metal webs of this type to cutting machines. Due to the elasticity of the rolled sheet, it tries to unwind from the coil and develops considerable forces. Without an appropriate mounting of the end of the sheet metal web, it rolls up or causes difficulties when threading the sheet metal web into the feed devices for processing machines.

Such coils are usually stored on support units which comprise a support shaft located in the middle, tensioning devices being provided between this support shaft and the inner surface of the coil or being mounted on the support shaft, which e.g. can be tensioned manually with a crank and thus fix the coil on the support unit or the support shaft.

In order on the one hand to prevent the sheet metal web from unwinding from the coil and on the other hand to achieve a defined position of the end of a sheet metal web wound into a coil, the features specified in the characterizing part of claim 1 are realized in a device of the type mentioned at the beginning.

The had device according to the invention comprises a fastening unit with which the bracket unit is fixed on the support unit, in particular is secured against rotation about the support shaft, the part of the bracket unit protruding from the support shaft carrying or having a clamping unit which detects the end of the sheet metal web. After the ironing unit has been placed on the support unit and fixed against rotation, the end of the sheet web can be inserted into the clamping unit and held there. Since the bracket unit is secured against rotation on the support unit, unwinding or rolling up of the sheet web is prevented; at the same time the end of the sheet metal web is held in a defined position and the feeding of the sheet metal web to a machine processing the sheet metal web is facilitated. If the sheet metal is relatively stiff, it is preferable to first insert the end of the sheet between the clamping parts of the clamping unit and, with the clamping unit open, to attach the fastening units to the support unit. Only then is the bracket unit fixed or secured on the carrying unit by closing the clamping unit, followed by closing the clamping unit to determine the end of the web.

The features of claim 3 are advantageous for fitting and removing the bracket unit. After the clamping unit has been opened at least partially, the fastening unit also opens and the end of the wound sheet metal web can be inserted into the clamping unit and the bending unit can be placed on the carrying unit. shortly before the clamping unit assumes the clamping position, the fastening unit of the Locked bracket unit and thus fixed the bracket unit on the support unit. It can be advantageous if the clamping unit can be opened a little without the fastening unit changing its fixed or secured position. Different thicknesses of the held material web can thus be met or taken into account; it is then only possible to loosen the fastening unit after a defined displacement or loosening of the clamping unit.

The clamping unit advantageously comprises a fixed and a relatively displaceable clamping part, in particular a clamping jaw and one with the latter. interacting pinch roller.

An advantageous interaction of the clamping unit and the fastening unit results from the features of claims 7 to 14.

The invention further relates to a coil of a sheet metal web stretched on a support unit, which is characterized in that the end of the sheet metal web is held in place with a device according to the invention which is fixed on the support unit. Coils of this type designed with a fixed end of the sheet metal web can be better stored are kept or delivered in this state and form units that are easy to handle. Already during the production or winding of a sheet metal sheet into a coil, the finished sheet metal sheets or the coils placed on a corresponding support unit can be provided with the device according to the invention and remain in this state until they are put to use. This measure also makes it possible to change a coil more quickly in a processing machine for sheet metal webs, and the downtime of such sheet metal processing machines is reduced.

It should be noted that the device according to the invention can be used not only for holding the ends of a sheet metal sheet wound into a coil, but also for holding plastic sheets or sheets made of more or less rigid elastic materials. Depending on the elasticity and rigidity of the material, the unit according to the invention will offer more advantages in terms of the defined retention of the end of the wound web or more advantages in terms of preventing an unwanted winding of a coil.

The invention is explained in more detail below with reference to the drawing.

Fig. 1 shows schematically a processing device for sheet metal webs that are wound into coils. FIG. 2 shows a side view of a coil provided with an ironing unit, FIG. 2a shows a top view of the ironing unit and FIG. 2b shows a front view of the ironing unit. 3, 3a, 3b and 3c show different operating states of the holding devices according to the invention. FIG. 3d shows a top view of an ironing unit according to FIG. 3 and FIG. 3e shows a front view. FIG. 4a shows a sheet metal roll arranged on a bearing block with an area of the machine inserted into a processing machine Ironing unit with closed clamping unit. FIG. 4b shows an arrangement according to FIG. 4a with the clamping unit open and the released end of a beak path.

5 to 8, a system for storing coils is shown according to two embodiments.

1 shows a system which includes a processing device 101 for material webs, in particular for sheet metal webs 102. Such a device 101 can e.g. be a slitter for sheet metal webs 102. Upstream of this device 101 is a storage device 105, which comprises a transport device 114, with which the sheet metal webs 102 wound into coils 104 are fed to an unwinding point 103 and are placed there in a defined position. The storage device 105 comprises a series of bearing blocks 112 on which clamping devices 107 are mounted, on which the coils 104 are placed and fixed or clamped with the clamping devices 107. With the transport device 114, the coils 104 can be lifted off the bearing blocks 112 and placed on the unwinding point 103. It can also be seen holding devices 126 which are placed on the support axles 108 and hold the front end 127 of the sheet metal webs.

Clamping devices 107 and bearing blocks 112 for coiles clamped on the clamping devices 107 are known per se in principle.

Fig. 2 shows a side view of a holding device according to the invention. The device comprises an ironing unit 5, which is essentially U-shaped. The legs of the U, which are advantageously formed by rectangular hollow profile tubes 6, carry clamping parts 11, 12 or are connected to the base 19 via clamping parts 11, 12. At most, a strut could also be provided in this area, as indicated at 32, in order to carry the clamping parts and / or to give the stirrup unit S appropriate rigidity or to form the base of the U. The bracket unit 5 is attached to the support unit 4, in particular a range 9, with fastening units 7 which are firmly connected to the legs 6 or are attached at the ends thereof. A carrier 23 is fixedly connected to the base distal end of the leg 6, and can be fixed on the support shaft 9 with clamping jaws 13 and 14 against rotation and secured against a decrease. In the end of the leg 6 facing away from the fastening unit 7, ie in the base region of the U-shaped bracket unit 5, clamping parts 11, 12, advantageously at least one clamping jaw 11 and at least one clamping roller 12, are provided. One clamping part, in the present case the clamping jaws 11, is mounted on the leg 6 or the hollow profile tube forming this leg by means of a supporting part 45. The pinch roller 12 is mounted displaceably on a guide tube 16 relative to the hollow profile 6 or the pinched element 11. The guide tube is guided on or in the leg 6. An end 2 of a sheet-metal web 3 drawn off from a coil 1 can be held between the clamping jaws 11 and the clamping roller 12; unwinding of the sheet metal web 3 from the coil 1 is prevented since the fastening parts or clamping jaws 13, 14 prevent the leg 6 from rotating in the circumferential direction of the coil 1 spanned on the support 9. The clamping parts 11, 12 advantageously extend over the entire width of the bracket unit 5 or span the coil 1.

The manner of fixing the leg 6 on the support unit 4 can be selected differently. Advantageously, it is a releasable attachment or an attachment by force and / or positive connection. In the present case, it is a non-positive, in particular frictional connection with the use of clamping jaws 13, 14, which exert corresponding pressure on the surface of the support shaft 9 and prevent rotation of the leg 6 relative to the support shaft 9. The pressure required for this frictional engagement is achieved by a spring 20, shown schematically in FIG. 3, which acts on the fastening parts or brake shoes 13, 14 or acts between the clamping jaws 14 and the clamping roller 12, so that the spring 20 has a double-acting function , In principle, it would also be possible to attach the fastening parts 13, 4 with an independent actuating unit, e.g. to determine a compression spring or a hydraulic or pneumatic unit on the range 9 and independently of it to adjust the clamping parts 11, 12 with another possibly similar actuation unit or to press them against each other in order to be able to insert or clamp the end 2 of the sheet metal web 3 between these clamping parts. The circumferential shape of the support shaft 9 can be circular; in principle, the circumferential shape could be corrugated or in the form of a polygon with corresponding straight sections for contacting corrugated or straight-shaped fastening parts 13, 14. In the present case, the friction or Clamping surfaces of the fastening parts 13, 14 are adapted to the circumferential shape of the shaft 9 and advantageously have corresponding friction linings.

The bracket unit 5 is placed on the support unit 4 in such a way that the recess 36 of the carrier 23 is placed in the direction of the support shaft 9 which points to the inner surface of the sheet-metal web 3 to be removed. This makes it easier to catch the end 2 of the sheet metal web 3 to be clamped.

2 and 3, contact surfaces or contact areas 34, which are formed on the bracket unit 5 and serve to allow the fastening unit 5 to assume a defined position in the bearing jaw 43 and / or the feed block 42. Corresponding abutments or support surfaces 35 are formed on the feed block 42 for these contact surfaces 34, which make it possible for the clamping parts 11, 12 or the end 2 of the sheet metal sheet 3 to assume a defined position.

It is advantageous if the pinch roller 12 rests on the inside 38 of the sheet metal web 3, since the pinch roller can be formed with a friction lining and thus does not damage the visible side of the sheet metal web 3 forming the outside 33, whereas the clamping part or jaws 11 with one the surface not impairing the clamping surfaces 33, for example a rubber covering, can be equipped. 3 shows a view of the bracket unit 5 according to the invention essentially in section through a leg 6. The leg 6 formed by a hollow profile is connected to the carrier 23. The carrier 23 carries a positionally fixed brake shoe 13 and a brake shoe 14 slidably guided in a recess 31 of a bearing 46. The brake shoe 14 is fastened on a guide part 47 which is connected to a guide shoulder 18. The guide shoulder 18 supports a compression spring 20, which is mounted in the guide tube 16, which is connected in the region close to the brake shoe 14 with a guide sleeve 17 or forms this, which is displaceably or slidably mounted on the guide heel 18. The end of the guide tube 16 which is removed from the guide sleeve 17 carries the clamping roller 12 and is displaceably mounted in the leg or hollow profile 6 in a guide 48. The spring 20 thus presses the clamping roller 12 at the end of the guide tube 16 in contact with the inclined friction surface 33 of the clamping jaw 11, which is mounted on a carrier 45, which carrier 45 is firmly connected to the hollow profile 6. The spring 20 thus causes a narrowing of the clamping gap 21 (FIG. 3b), which can be formed between the clamping roller 12 and the clamping jaws 11, as long as the guide tube 16 is pressed in the direction of the support shaft 9.

The guide tube 16 can be stiffened against the action of the spring 20 in various ways, e.g. by means of a hydraulic, mechanical, pneumatic or electrical actuating unit 22 which either on the hollow profile 6 (FIG. 3b) or on the support unit 4 (FIG. 3c) or on the bearing block 42 (FIG. 3d) or on the processing machine 39 (FIG. 3d) can be arranged. In principle, a manually operated steep lever could also be provided, which on the hollow professional! 6 is mounted, as is shown schematically in Fig. 3b.

A similar actuating unit 22, as designated by 22 in FIGS. 3b, 3c and 3d, could also be provided in order to adjust the brake shoes 14 relative to the carrier 23 and thus to fasten or release the ironing unit or the hollow profile 6 or to reach from the support shaft 9.

3, 3a, 3b and 3c, a special and simple embodiment of a double-acting device is described, which at the same time enables the fastening unit 7 to be detached from the support unit 4 when the clamping gap 21 is enlarged, insofar as the guide tube 16 is in the direction of an enlargement of the clamping gap 21 is moved with an actuating or adjusting unit 22. For this purpose, a bearing 26 for a ball ring 27 is formed on the carrier 23 or the guide 46 for the brake shoes 14. A counter bearing 28 is formed on the guide shoulder 18, which is connected to the clamping jaw 14. Furthermore, the end region 29 of the guide sleeve 17, which is remote from the pinch roller 12, is provided with an internal bevel 30 which can be moved onto the ball ring 27 from the outside and thereby presses the balls inwards. An adjustment of the balls of the ball ring 27 inwards between the bearing 26 and the Counter bearing 28, as shown in FIG. 3a, begins as soon as the foremost end region of the bevel 30 comes into contact with the ball ring 27. The Kugelriπg 27 is of special design. In the position shown in Fig. 3a, the facing surfaces of the bearing 26 and the counter bearing 28 touch and the balls of the ball ring 27 are pressed outwards. These balls enclose just over 50% of the circumference of the two bearings. As soon as the two bearings 26 and 88 are adjusted apart, as in FIG. 3c, by pushing the balls radially inward, they rest on the connecting pin 65, which runs between the brake shoe 14 or the guide part 17 and the guide shoulder 18, or are close to each other or touch each other. This position determines the possible number and diameter of the balls. This is the position in which the balls 27 'of the ball ring 27 keep the bearing 26 and the thrust bearing 28 pressed apart the most. It can be seen that when the balls are moved from this inner position into a circumferential position around the bearing 26 and around the counter bearing 28, the full circumferential space around the two bearings can no longer be occupied. However, it is provided that these balls cover more than 50% of the circumference, in particular in order to allow the chamfer 30 of the guide sleeve 29 to run open.

With a further adjustment of the guide tube 16 against the pressure of the spring 20 in the direction of the carrier 23, as shown in FIG. 3b, the balls of the ball ring 27 are pressed radially inward and remove the bearing 26 from the counter bearing 28.

Due to the pressure exerted on the bearing 26, the radially inwardly displaced balls of the spherical ring 27 cause the carrier 23 to be adjusted to the left by the distance A relative to the clamping jaw 14, as shown in FIG. 3b. The distance A, by which the clamping jaw 13 can move away from the supporting shaft 9, is predetermined by a stop 25, against which a contact surface 24 formed in the end region of the carrier 23 comes into contact. This stop 25 is fixed, i.e. it is located on the bearing block 42 or is formed by a corresponding stop which is formed on the machine 39.

According to FIG. 3b, the widening of the bevel 30 on the ball ring 27 causes an adjustment of the carrier 23 due to the sliding or displacement of the bearing 46 on or relative to the guide part 47 of the clamping jaw 14, namely a defined lifting of the clamping jaw 13 by the distance A. , which is predetermined by the distance between the contact surface 24 and the stop 25.

With a further adjustment of the guide sleeve 17 in the direction of the fastening unit 7 or the carrier 23, the balls of the ball ring 27 continue to enter between the bearing 26 and the counter bearing 28, however, the carrier 23 cannot be displaced further due to the stop 25. According to FIG. 3b, the bearing 26 and the counterbearing 28 have been further removed from one another without the carrier 23 having been displaced in the direction of the stop 25, since the balls of the ball ring 27 remove the guide shoulder 8 against the pressure of the spring 20 from Push the range 9 away. Since the clamping jaw 14 is connected to the guide shoulder 18 via the guide part 47, the clamping jaw 14 lifts off the support shaft 9 (FIG. 3c).

3c, the two jaws 13 and 14 are thus lifted off the support shaft 9; furthermore, the clamping gap 21 is designed with a maximum width 21. In this position, the bracket unit 5 according to the invention can be placed on a support unit 4. After moving the guide tube 16 away from the support shaft 9, the bracket unit 5 can be fixed by placing the brake shoes 13 and 14 on the support shaft 9 and the position shown in FIG. 3a can be reached. 3c, the end 2 of a web 3 can be inserted between the clamping jaws 11 and the clamping roller 12. If the actuating or actuating unit 22 has returned to its clamping position according to FIG. 3 a, the spring 20 acts and presses the clamping roller 12 away from the supporting shaft 9 as far as the thickness of the sheet metal web 3 permits, the inclined position of the friction surface 33 of the clamping part 11 a considerable frictional engagement between the clamping roller 12, the material web 3 and the clamping jaws 11 is achieved.

The actuating or actuating devices 22 are only shown schematically. These actuating units 22 can be of any design and are used to adjust the guide tube 16 with the guide sleeve 17 and the clamping roller 12 mounted thereon in a corresponding direction towards the support shaft 9 or away from it. In principle, these units could also replace the spring 20.

The jaws 11 and pinch roller 12 could also be interchanged. A plurality of clamping jaws or lockable clamping jaws could also be provided.

As can be seen from FIG. 3a, the ball ring 27 is provided in a bearing basket 26 with correspondingly hardened bearing surfaces, the front end region 29 of the guide sleeve 17 being fitted exactly into the bearing basket and the bevel 30 being chosen such that it is the balls of the ball ring 27 can grasp from the outside and press radially inwards.

The design of the leg 6 is chosen to be as resistant to bending and torsion as possible, in order to be able to resist the sometimes considerable holding forces.

The carrier 23 is advantageously made of gray cast iron with corresponding weight-saving recesses 50. The support surfaces 34 and the stop surface 24 are advantageously made with hard materials and / or correspondingly large areas, since exact bearings and dimensions are necessary here. The receiving surfaces 34 also serve to counteract the forces exerted on the gill parts 11 and 12 when the sheet metal web 3 is removed from the coil 1 during its processing.

4a shows a detailed view of the arrangement shown in FIG. 1, specifically the area of the bearing block 42 and the entry area into a processing device 39. In a bearing unit 66 of the bearing block 42 there is a receptacle 67 for the supporting shaft 9 of the supporting unit 4 of the coil 2 formed or built on, in which receptacle 67 the coil 1 is inserted with the transport routes 41. The bracket unit 5 is placed in such a way that it comes to rest with the legs 6 in the entrance area of the device 39. The distance A is formed or maintained between the end region 24 remote from the base and a bearing block fixed stop 25, as can be seen in FIG. 3a. In the position shown in FIG. 4a, the bending unit 5 is in a position which corresponds to the position according to FIG. 3.

The actuation unit 22, which has an actuation device 61, e.g. a pneumatic or hydraulic cylinder, the actuating rod 34 of which is connected to a U-shaped actuating lever 62, 63 pivotably mounted on the housing 39. When the adjusting rod 34 extends, the free end or a stop surface 64 of the leg part 63 presses against the guide rod 16 of the bracket unit 5 and displaces this guide rod 16 in the direction of the supporting shaft 4 of the coil 1. In FIG. 4b, the U-shaped lever is 62, 36 is shown pivoted and one can see the guide tube 16, which has been displaced into the leg or the hollow profile 6 and which, in this position, has caused the end stop 24 of the bracket unit 5 to lie against the bearing block-fixed stop 25, while at the same time lifting the Clamping jaw 13 is carried out by the support shaft 4, as was described in connection with Fig. 3b. At the same time, the clamping jaw 1 is still in contact with the supporting shaft 4 and when the U-shaped bracket 62, 63 is pivoted further or the guide tube 16 is pressed further into the hollow profile 6 in the direction of the supporting shaft 4, this clamping jaw 14 also lifts from the scope 4 from.

In the raised position of the clamping jaws 13 and 14, it is possible to rotate the coil 1 on its support 66 in its receptacle 67 unhindered by the bracket unit 5 and to pull off the wound material web 3 through the clamping parts 11, 12 which are spaced apart from one another into the device 39 ,

When the U-shaped bracket 62, 63 or the guide tube 16 is readjusted by a predetermined amount, the track 1 is fixed between the clamping parts 11, 12 and the bracket unit 5 is fixed or secured again on the supporting shaft 4

The sheet metal web drawn off by the clamping parts 11, 12 is first fed to a straightening section 60 in the device 39 and then subjected to further processing, for example a cutting process. It is entirely possible to also place the coil 1 with the fastening unit 5 in a position on the bearing block 42, in which the support 23 faces away from the bearing block 42. For this reason, the bearing surfaces 34 are formed symmetrically to the axis running through the guide tube 16 to enable defined support here by the contact surface 35 formed on the support bearing or stop 25.

4a also shows a support roller or support unit 34 with which the guide tube 16 is supported in its section emerging from the hollow profile 6 in order to be able to resist corresponding pressures of the actuation unit 22.

In principle, it is also possible to place an actuation unit 22 similar to that of the actuation unit shown on the bearing block 42 or on the bracket unit 5 itself and to effect an adjustment of the guide tube 16 with this actuation unit.

The invention further relates to a system for storing two or more material webs, in particular sheet metal webs, each wound into a coil, preferably before processing, such as before processing by cutting off pieces of material of a predetermined length and / or width.

It is known, in particular for devices for the longitudinal cutting and / or transverse cutting of material webs, such as for strip shears for the longitudinal and / or transverse cutting of sheet metal webs, for the processing of different material spools, each of which is wound into a coil, to store these coils on fixed and adjacent unwinding units and from each coil a material web via its own guide device to the processing point, i.e. to the strip scissors (AT 006.462 Ul).

A system of this type is extremely complex in terms of construction, especially since the unwinding units are mounted on the fly and a large number of unwinding units are to be provided, which necessitates a high investment outlay. Furthermore, a guide device is required for each material web from each coil to the strip shears, which also requires a high level of construction, especially since considerable distances have to be overcome for coils arranged further away from the strip shears. Apart from this, the number of different material webs is limited by the number of unwinding units provided, so that it may still be necessary to replace a material web that is arranged on a unwinding unit with another material web. For this, the material web to be exchanged has to be rewound over a greater distance, which is cumbersome and time-consuming. Then the new material web must be placed on the empty unwinding unit and the free end of the material spell must be guided to the strip shears via a guide device.

It is also known internally to provide only a single unwinding unit on the processing system, for example on a strip cutter, and to store the material webs to be processed wound in coils in a separate warehouse, etc. on wooden planks arranged on pallets in the warehouse. A coil is then moved from this warehouse to the unwinding unit by means of a crane, where it is threaded and processed. However, since it is always only necessary to process a longitudinal section of a material web of a coil that is relatively small compared to the total length of the material web, the coils have to be exchanged frequently, which requires laborious and time-consuming manipulations with the risk of damage to a coil. The invention aims at avoiding these disadvantages and difficulties and has as its object to create a system of the type described in the introduction, in which a large number of coils of different material webs can be stored in an orderly arrangement, although in spite of the basically unlimited number of coils in each coil undamaged for a short time, ie with the greatest possible protection of its material web, can be brought to a delivery point, in particular at a processing plant. Furthermore, it should not be necessary to transfer a coil to an unwinding unit.

According to the invention, this object is achieved by the combination of the following features: a storage device with storage spaces for two or more coils arranged in at least one row, each coil being attachable to a tensioning device and - bearing blocks provided at each storage space with a holding device in the wound state for supporting the tensioning device of a coil and a transport device for transporting a coil together with its tensioning device and holding device from a storage point to a delivery point, in particular adjacent to a processing device, and back.

The bearing blocks of the storage spaces are preferably designed for placing the coils with axes that are parallel to one another and at a horizontal distance from one another. This means that the coils are arranged in a row, so that the transport device can be implemented in a particularly simple manner.

The transport device is expediently equipped with a lifting and lowering device for a coil and with support receptacles for gripping ends of the tensioning device which project over the sides of a coil, thereby ensuring particularly gentle treatment of a material web.

According to a preferred embodiment, the transport device can be moved to the delivery point with a coil in the raised state, specifically transversely to the axis of the coil.

The tensioning device is preferably equipped with a support axis and tensioning strips which are radially adjustable with respect to the support axis. A space-saving construction is characterized in that the bearing blocks are arranged on running rails for the transport device, preferably are rigidly connected to the running rails.

According to a preferred embodiment, the carrying mounts of the lifting and lowering devices can be pivoted from a lower to an upper position and back by means of a pivot mechanism, or the carrying mounts of the lifting and lowering device can be moved in a straight line in the vertical direction, preferably by means of spindles.

To save space, the coils can expediently be placed on the storage bins with the holding device pointing downwards or upwards.

The system for storing coils is explained in more detail in the drawing, in which Fig. 1 is an overall view together with a processing device, etc. shows a device for the longitudinal and / or transverse cutting of sheet metal. FIG. 5 illustrates a plant in side view, FIG. 6 in plan according to a first embodiment and FIGS. 7 and 8 show a further embodiment in a representation analogous to FIGS. 5 and 6.

According to the embodiment shown in FIGS. 1, 5 and 6, a processing device 101 for the longitudinal and / or transverse cutting of a sheet metal sheet 102 is illustrated, in which an unwinding point 103 is provided immediately adjacent, with which the sheet metal sheet 102 wound into a coil 104, which coil 104 can be placed on the unwinding point 103, can be unwound and thus the sheet web 102 can be fed to the processing device 101. Upstream of the unwinding point 103 is a storage device 105 with a plurality of storage spaces 106 for a plurality of coils 104 arranged in a row. Each coil is attached to a tensioning device 107, which is formed by a support axis 108 and tensioning bars 109 which are radially adjustable relative to the support axis 108, the tensioning bars 109 lie against the coil on its inner surface 110.

The support axes 108 each project over the width 111 of a sheet metal strip 102, i.e. over the coil 104 laterally, so that a rotatable support on bearing blocks 112, which are provided at each storage location 106 of the storage device 105, is possible.

The bearing blocks 112 are arranged on rails 113 of a transport device 114, which is used to transport a coil 104 from a storage location 106 to the unwinding point 103, that is to say rigidly mounted on these rails 113. The transport device 114 has a U-shaped one and laterally spans the storage places 106 and their bearing blocks 112 Support frame 115, the free height 116 of which exceeds at least twice the maximum diameter 117 of a coil 104.

A lifting and lowering device 120 for a coil 104 is provided on the vertical side uprights 118, the lower ends of which are guided on the running rails 113 by rollers 119 which can be driven by a motor 119 '. 1, the lifting and lowering device 120 has spindles 121 which are arranged on the vertical side uprights 118 of the U-shaped support frame and can be driven synchronously by means of a motor 122, with which spindles 121 support receptacles 123 for detecting over the sides of a coil 104 protruding ends 124 of the support axis 108 of a clamping device 107 are movable in the vertical direction, which ends 124 also protrude laterally beyond the bearing blocks 106.

In Fig. 5, the transport device 114 is illustrated once with full lines at the location of a storage space 106, etc. with a coil 104 brought into the transport position and once with dashed lines at the unwinding point 103 with a coil 104 already deposited at the unwinding point. FIG. 5A shows the unwinding point 103 without transport device 114, and it can be seen that the conditions of the unwinding point 103 for the Support axes 108 can be raised and lowered in order to be able to feed the sheet metal sheet 102 straight to the processing device 101, that is to say without bending the sheet metal sheet 102.

7 and 8, the support receptacles 123 of the transport device 114 are provided on levers 125 which are pivotably arranged on the vertical side stands 118 and are used to raise and lower a coil 104.

Each coil 104 has a holding device 126 for fixing the free end 127 of the sheet metal web 102 of each coil. This holding device 126 is U-shaped and is pivotably mounted on the support axis 108, with one leg 128 of the U lying to the side of the coils 104, so that the holding device 126 is moved with the coil 104, i.e. during its transport from a storage place 106 to the unwinding point 103. The holding device 126 at the unwinding point 103 is deactivated by means of an unlocking device 129, so that the coil 104 can be unwound.

Claims

Expectations:

1. Holding device for the end (2) of a material web, in particular sheet metal web (3), wound into a coil (1), the coil (1) on a support unit (4), in particular a support shaft (9), preferably with a coil tensioning unit ( IO) is stored, characterized in that

- That in its entirety essentially U-shaped bending unit (5) is provided, which at the free ends of its two, in particular tubular legs (6) each have at least one fastening unit (7) for support or fastening to the respective one from the coil (1) protruding, preferably cylindrical, end region (9) of the support unit (4) and

- That on the ironing unit (5) at a distance from the fastening unit (7), preferably in the base region or in the region close to the base, at least one leg (6), a clamping unit (8) that detects and holds the end (2) of the sheet metal web (3). located or trained

2. Device according to claim 1, characterized in that the fastening unit (7) with the projecting end region (9) of the support unit (4) can be connected positively and / or non-positively, in particular with frictional engagement, or to this end region (9) against a relative one Rotation relative to the support unit (4) or the coil (1) is designed to be securely attachable.

3. Device according to claim 1 or 2, characterized in that the clamping unit (8) is operatively coupled to the fastening unit (7) and an opening of the clamping unit (8) or an opening movement of at least one of its clamping parts (11, 12) an opening the fastening unit (7) or opening movement initiates or conducts at least one of its fastening parts (13, 14).

4. Device according to one of claims 1 to 3, characterized in that the fastening unit (7) with a steeping device (15) acting on its fastening parts (13, 14), which is connected to at least one of the clamping parts (11, 12), eg an adjusting rod or an adjusting tube, is adjustable in the fastening position or in the release position.

5. Device according to one of claims 1 to 4, characterized in that the clamping unit (8) a fixed or relative to the fastening unit (7) immobile or fixed on the leg (6), in particular in the base region (19) or in the course of the base (19) of the stirrup unit (5), arranged or forming this base (19) Klernmeii (11), in particular Backeπteäl, and a relatively adjustable, in particular in a direction parallel to the leg (6) of the U- Shaped bow unit (5) adjustable, preferably mounted in or on the leg (6) adjustable, clamping part (12), in particular a clamping roller.

6. Device according to one of claims 1 to 5, characterized in that at least one of the two clamping parts (11, 12) extends over the width of the coil (1) and / or that at least one of the two clamping parts (11, 12) over the entire base (19) of the fastening unit (5) runs or forms this base (19)

7. Device according to one of claims 1 to 6, characterized in that at least one of the clamping parts (11, 12), preferably the clamping roller, is pressed with a spring (20) in the clamping position.

8. Device according to one of claims 1 to 7, characterized in that the fastening unit (7) with respect to its contact surface to the circumferential shape of the support shaft (9) of the support unit (4) adapted, preferably two diametrically opposite jaws with respect to the shaft axis (13, 14), of which one of the clamping jaws (14) is mounted so that it can be displaced radially to the span (9) in a carrier (23), which preferably only partially spans the supporting shaft (9), and the other clamping jaws (13) are held in position on the carrier (23) is.

9. Device according to one of claims 1 to 8, characterized in that between the adjustable clamping part (12) of the clamping unit (8) and the adjustable clamping jaws (14) of the fastening unit (7) a double-acting compression spring (20) is used, which this presses the two elements (12, 14) apart or prestresses against each other.

10. Device according to one of claims 1 to 9, characterized in that each leg (6) of the U-shaped bracket unit (5) is formed by a hollow profile which is fixedly connected to the carrier (23) of the fastening unit (7), wherein in the hollow profile (6) a guide tube (16) is slidably mounted in the longitudinal direction, in which the pressure spring (20) is optionally arranged, which is connected to the adjustable clamping part (12) and, preferably, that with a guide sleeve (17), is slidably mounted on a guide shoulder (18) which is connected to the radially adjustable clamping jaw (14).

11. Device according to one of claims 1 to 10, characterized in that an actuating or actuating unit (22) for a displacement of the guide tube (16) or the associated adjustable clamping part (12) relative to the leg (6) or is provided for the carrier (23) which engages on the guide tube (16) and is preferably fastened or mounted on the carrier (23) and / or on the hollow profile (6) or that, if appropriate, the guide tube (16) and / or at least one of the two clamping parts (11, 12), preferably clamping roller (12), the fixedly mounted actuating unit (22) to achieve a relative movement between the two clamping parts (11, 12) or to adjust them to an open position or to form a clamping gap ( 21) is assigned between the clamping parts (11, 12)

12. Device according to one of claims 1 to 11, characterized in that the area of the carrier (23) of the fastening unit (7), which is located away from the guide tube (6) and the support area of the guide tube (6) on the range (9 ) diametrically opposite, is designed as a stop or stop surface (24) for a stationary abutment (25), a distance A being formed between the stop surface (24) and the abutment (25) provided in the clamping position of the fastening parts (13, 14) ,

13. Device according to one of claims 1 to 12, characterized in that

- That on the carrier (23) a bearing (26) for a ball ring (27) is arranged, wherein the counter bearing (28) in the carrier (23) facing end region (29) of the guide shoulder (18) is formed and

- That the guide tube (16) or the guide sleeve (17) in its end region facing the carrier (23) has an outside on the ball ring (27) and this pushing inward and thus the bearing (26) and the opposing bearing (28th ) has urging bevel (30).

14. Device according to one of claims 1 to 13, characterized in that the clamping jaws (14), which are adjustable relative to the carrier (23) or are supported in the latter, are adjustably mounted in its bearing recess (31) in the longitudinal axis of the guide tube (16), and that the central axis of the hollow profile (6) and / or of the guide tube (16) run through the axis of the support unit (4) or the span (9).

15. Device according to one of claims 1 to 17, characterized in that the bracket unit (5) is designed as a one-piece, as rigid as possible component, optionally with a connecting strut (32) connecting the hollow profiles (6).

16. Device according to one of claims 1 to 15, characterized in that a Kiemmteil is formed by a fixed on the bracket unit (5) brake pad (11), the braking surface (33) for adjusting the direction of the guide tube (16) or the pinch roller ( 12) runs inclined and protrudes into the adjustment path of the circumference of the pinch roller (12).

17. Device according to one of claims 1 to 16, characterized in that on the legs (6) and / or on the guide tube (16) and on the carrier (23) on the same side of the bracket unit (5) bearing surfaces (34) for contacting Supporting units (35) which are provided and are fixed in position or fixed and which support the coil (1) or the device, in particular of machine arrangements.

18. On a support unit, in particular range, optionally with the aid of a tensioning unit, spanned coil of a sheet metal web, characterized in that the end of the sheet metal web is held with a holding device according to one of claims 1 to 17.

19. Coil according to claim 18, characterized in that the carrier (23) of the fastening unit (7) with its recess (36) partially spanning the supporting shaft (9) in the direction of the inside (37) of a sheet metal strip drawn off from the coil (1) (3) is placed, the outside (38) of the sheet metal web (3) advantageously facing the pinch roller (12).

20. System for storing two or more material webs, in particular sheet metal webs (102), each wound into a coil (104), preferably before processing, such as before processing by cutting off pieces of material of a predetermined length and / or width, characterized by the combination of the following features: a storage device (105) with storage spaces (106) for two or more coils (104) arranged in at least one row, each coil (104) being attachable to a tensioning device (107) and having a holding device (126) wound in it Condition is stable, bearing blocks (112) provided at each storage location (106) for supporting the

Tensioning device (107) of a coil (104) and a transport device (114) for transporting a coil (104) together with it

Clamping device (107) and holding device (126) from a storage point (106) to a delivery point (103), in particular adjacent to a processing device

(101), and back.

21. Plant according to claim 20, characterized in that the bearing blocks (112) of the storage spaces (106) for placing the coils (104) are designed with axes parallel to one another and at a horizontal distance from one another.

22. System according to claim 20 or 21, characterized in that the transport device (114) with a lifting and lowering device (120) for a coil (104) and with support receptacles (123) for detecting over the sides of a coil (104) projecting ends (124) of the tensioning device (107).

23. System according to one or more of claims 20 to 22, characterized in that the transport device (114) with a coil (104) can be moved to the delivery point in the raised state, specifically transversely to the axis of the coil (104).

24. System according to one or more of claims 20 to 23, characterized in that the clamping device (107) is equipped with a support axis (108) and radially adjustable clamping bars (109) with respect to the support axis (108).

25. Plant according to one or more of claims 20 to 24, characterized in that the bearing blocks (112) on rails (113) for the transport device (114) are arranged, preferably rigidly connected to the rails (113).

26. Plant according to one or more of claims 20 to 25, characterized in that the carrying receptacles (123) of the lifting and lowering devices (120) can be pivoted from a lower to an upper position and back by means of a pivoting mechanism.

27. Plant according to one or more of claims 20 to 26, characterized in that the support receptacles (123) of the lifting and lowering device (120) can be moved in a straight line in the vertical direction, preferably by means of spindles (121).

28. Plant according to one or more of claims 20 to 27, characterized in that the coils (104) on the storage spaces (106) can be deposited with the holding device (126) directed downwards or upwards.

29. Plant according to one or more of claims 20 to 28, characterized in that the dispensing point is designed as a unwinding point (106) and is equipped with an unlocking device (129) for the holding device (126).