DE3046126A1 - Wind or unwind reel for strip feed to press - consists of standard subassemblies with motor used for wind and core spread operations - Google Patents

Abstract

The reel assembly is intended for winding or unwinding wire or strip material, such as may be used for feeding strip in steps to a punching press. It has a drive motor (17) which can be coupled (14,13) to the hollow winding shaft (2) and is alternatively couplable (14,19) to a central shaft (3) which drives (25,7) the mechanism (6,8) to radially adjust the winding core members (9) for internally tensioning, or adapting to, the wire or strip wound on the reel. The assembly consists of standard sub-assemblies which can be used to build up single or twin-reel units and different possibilities are specified and illustrated.

Description

description

Reel for unwinding and winding up tape or wire The invention relates to a reel for unwinding and winding tape or wire, such as those used for the tape feed is used to a punch.

Such reels are known in various embodiments and depending on the respective application and the scope of the function <j.

With these reels, the tape is either pulled off the reel - and to do this, the reel axle is braked - or the lap bundle is driven by a drive motor, mostly step by step, rotated. Such a drive motor must for the mass acceleration of the winding collar, the high switching frequency and the diameter decrease of the winding collar be laid out when unwinding.

The winding collar is either by means of radially displaceable support arms or carried by support segments supported from the inside. The crag elements are included radially adjustable and tighten the waistband from the inside. By adjusting The support elements are put on barrel coils with different inside diameters and centrically clamped tesLyes.

It is known as the drive motor for the winding process the various To use types of electric motors and hydraulic motors. Starting couplings, Start-up controls and speed regulators are used.

It is also known for spreading the support arms and tensioning the winding collars Use threaded spindles and these by hand, by electric motors or hydraulic motors to drive.

For spreading the support segments, it is known to use the supporting wedges or move lever. This is done either by hand or by means of spindles Adjustment motor or support elements that are operated by hydraulic or pneumatic cylinders are movable.

The known devices for the winding drive and its control are usually expensive and take up a noticeable part of the total costs a reel. In the case of cheap solutions, e.g. unregulated three-phase drives, unwanted bumps and noises accepted.

The known drives for spreading the support elements require also a considerable effort, since the spreader rotates with the reel. In many cases, manual adjustment is sufficient because of the cost.

The different requirements for a reel depending on the purpose and size has resulted in a wide variety of designs. This enables series production, for example, according to a modular system, handicapped.

The invention is based on the object of the devices of the drives to simplify the winding and tensioning and to arrange them so that the Reel can be assembled and varied according to a modular system. Through this should reduce storage, shorten delivery times and reduce costs will. The object is achieved according to the invention in that the same drive used for winding and spreading. For this, either one or the other process is blocked.

According to a further feature of the drive device according to the invention the two functions are driven by separate friction disks, the driven by the same drive pulley. These are friction clutches so (-ufigildet, that the transmittable torques by means of adjustable tXecitsrkr; t e are pre-countered The drive motor is the one provided Adapted torque and can be a cheap squirrel cage motor.

The friction clutch for the reel drive is arranged so that it also serves as a brake on the run-out. The friction clutch for the clamping process transmits the torque for spreading and clamping. When reaching the adjustable, This friction clutch slips with the greatest clamping force. During the spreading process is the Wrapping process blocked by a device; the friction clutch slips for the wrapping process.

Both friction clutches transmit the drive power during the winding process. In the slip phase when starting up, the slip difference between the two independent friction clutches a re-tensioning can be effected.

According to a further embodiment of the invention, the pressing force takes place for the two friction clutches by means of hydraulically or pneumatically operated pressure cells or cylinders. This allows the drive and braking torque through control elements set on a control panel and changed during the rotation of the winding collar will.

The specification of a low drive torque means a gentle one Run-up and run-out. According to the invention, the start-up, i.e. the acceleration, takes place with Slip-on, with a full wrap-around waistband slipping on for a long time and a small one, already partially Unwound wrap band only slips briefly. The drive torque can be specified as small that a full winding collar at start-up is only a fraction of the start-up time the final speed is reached.

Due to the different conclusion, there is a compensation for the Decrease in diameter when unwinding. With the embodiment according to the invention, a Winding drive for constant unwinding speed imitated with the simplest means will.

The "slip drive" avoids shocks and overloads and enables a small drive and a light reel construction. The one when hatching and Frictional heat generated during braking is dissipated, for example via cooling fins.

In a further embodiment according to the invention, the Friction clutches formed by multi-plate clutches, which are operated by means of magnets, compressed air or oil pressure can be actuated.

This version is particularly suitable for automatic control of the reel including the loading process.

In a further embodiment of the inventive solution, the both drives through successively connected friction clutches.

In the drawings are some embodiments of the inventions as well as further details. They show: Fig.1 reel with support arms in a side elevation, partially in section Fig.2 radial guide, three-armed, in elevation Fig.3 radial guide, four-armed, in elevation Fig.4 Arrangement of the slipping clutch in section Fig.5 Slipping clutches with pressurized can in half section Fig.6 Reel with support arms, cutout in section Fig.7 Reel with support segments supported by wedges Fig.8 Reel with lever supported support segments Fig.9 reel with support arms in 2 views Fig.10 double reel in 2 views Fig.1i reel with swivel device The reel according to Fig.1 consists from the bearing housing 1, in which the hollow reel shaft 2 is mounted and the itself the adjustment shaft 3 receives. The reel head 4 is firmly connected to the reel shaft 2 and carries the screwed-on bridges 5. These are shown in Fig.2 with a three-armed one and shown in Fig.3 with a four-armed radial guide. The bridge 5 carries the guide rods 40 and the threaded spindle 6, which are connected to the axial bearing 39 and a bevel gear 7 carries at the inner end.

The outer end is guided by the bearing block 37 and provided with a square 38.

The expanding nut is on the guide rods 40 and the threaded spindle 6 8 radially displaceable and carries the support arm 9 for receiving the winding collar. the on the reel head 4 and the bearing blocks 37 attached washer 10 is used for guidance of the band, not shown.

In the bearing housing 1 there is a spring 11 between the two bearings 12 tensioned and presses the friction disk (winding) 13 against the drive disk 14 the friction linings 15 on both sides are screwed on. This drive pulley 14 is on the reel shaft 2 stored and is supported on the contact collar 16 with which the Spring 11 is tensioned. Friction disk (winding) 13 and drive disk 14 form the Friction clutch for the drive for winding.

The drive pulley 14 is provided with a toothing or carries a ring gear in which a pinion 18 driven by the motor 17 engages. One another friction disk (spreading) 19 is also pressed against the drive disk 14, and by the spring 21, which clamps with the clamping nut 22 and aie counter nut 23 is secured. While the friction disc 13 is slidable on the reel shaft 2, however, is firmly mounted by the feather key 21, the other friction disk 19 is slidable on the adjusting shaft 3 and mounted in a rotationally fixed manner by the feather key 21.

The friction disk 19 and the drive disk 14 form the second friction clutch, whose coupling torque is easily adjustable. The adjusting shaft 3 is supported by the collar 24 against the reel shaft 2. The pinion is on the adjusting shaft 2 25 attached, which engages in the bevel gears 7 of the threaded spindles 6.

tZLe adjusting shaft 2 also carries the slip-on disk 2, which with , e, n Klenunstück 27 is kieinmt and released by the release screw 28 and then can be removed.

A locking pin 35 is slidably mounted in the reel head 4, which can be pushed into a hole 36 on the bearing housing 1 while turning of the reel prevented.

The reel is with the bearing housing on a column 33 or in Fig.1 screwed onto a displacement device 29. This is used for axial displacement of the reel. The rack 30 attached to a plate can be through the pinion 31 can be moved. This is done by a crank or in Fig. 1 a Gear motor 32 rotated. The column 33 itself is attached to a stable foot 34.

Before spreading and tensioning or moving the support arms forward When a winding collar is put on, the reel is turned by hand and by means of of the locking pin 35 locked against rotation. The plug-in washer 26 is removed.

When the motor 17 is switched on, the drive pulley 14 and 14 rotates tries to take both friction disks 13 and 19 with you. The friction disk 13 stops and slips while the adjusting shaft 3 is carried along via the friction disk 19. About the pinion 25 and the bevel gears 7, the thread spindles 6 are rotated. These move the support arms 9 via the expanding nuts 8 after sliding on of a winding bundle, the support arms are first spread and then by the motor the winding collar is stretched until the friction disk 19 also slips.

After switching off the motor 17, the plug-in disk 26 is on inserted, pressed on and the release screws 28 opened so that the clamping piece 27 stuck on the adjusting shaft 3 under the action of a spring (not shown). Now the locking pin 35 is pulled out and the tape in the further system inserted. The system is now ready for operation.

The motor 17 is switched on by a "tape feed" signal.

The drive disk 14 rotates while both friction disks 13 and 19 hatch. The reel starts up gently due to the slip torque of both disks and accelerates. The tape is released from the tape roll with increasing speed abyeveloped.

Since yleictlze y l3and is being processed, the supply takes a noose between reel and consumer initially from un <L then rises until the supply loop is filled up to a certain limit.

The "Halt" signal is now given. The engine stops and stays stop immediately due to self-locking or a holding brake. The reel turns but still further and both friction disks 13 and 19 slip. You work through it as a brake and brake the lap to a standstill. When the sling is almost used up, the same process is started with the "Tape feed" signal.

The unwinding process makes the bandage smaller and lighter. This results in a greater angular acceleration when accelerating with the selected slip torque achieved, and a greater angular velocity is reached at the stop signal. These partially compensates for the decrease in diameter, so that the average belt speed does not change significantly, although the drive motor has a constant speed.

With a certain decrease in diameter, the start-up time is sufficient to to accelerate the winding bundle to full speed and at an even lower speed Diameter is followed by a time after the acceleration time in which the winding collar is handled without slippage at full speed. This inventive process can be influenced by the size of the slip torque.

In the embodiment according to Fig.1, the slip torque is due to the Bias of neither 1 given. This is when the contact collar is fixed in place 16, for example by the length of a coil spring or the number of disc springs, given. The preloaded spring deflection is so great that the change occurs the wear of the friction lining 15 does not yet play a role. The slip torque is preferably fixed according to the torque of the motor.

The slip torque for driving the friction disk (spreading) 19 is Easily changeable in the embodiment according to Fig. through clamping nut 22 and lock nut 23 so that it can be adapted to the size and mass of the winding collar can.

Figure 4 shows the slip clutches according to another application example shown in section. Compared to the example in Fig. 1, the contact collar is missing 16. As a result, both friction disks 13 and 19 are under the action of the same spring tension, and only spring 11 is required. The adjustment of the spring preload by means of the clamping nut 22 and the lock nut 23 both for winding as for tensioning a change in the slip torque and thus an adaptation to the Mass of the wrap band.

In Fig.5 is another embodiment of the slip clutch shown with a pressurized can in half section.

On the bearing housing 1, the bracket 41 is attached to which, for example a pressure cell 43 or a cylinder for compressed air or oil is attached through the connection 44 is supplied with the pressure medium.

The pressure cell 43 presses the friction disk 19 via the axial bearing 42 and the drive disk 14 against the friction disk 15. This rests over the bearings 12 and the spacer washer 45 against the washer 46, which is fastened to the bearing housing 1 is. Due to the pressure with which the pressure cell 43 is applied, the slip torques influences, and it can during the run the winding torque and the tensioning torque to be changed. This is particularly advantageous in automated systems. In In this case, the interlocking of the reel shaft 2 with the bearing housing 1 caused when spreading in a manner not shown by the pressure medium.

Another embodiment of the invention is shown in Fig.6 shown in half section. The adjusting shaft 3 is mounted in the bearing housing 1, which also serves as a reel shaft.

The reel head 4 is rotatably mounted on this. At the reel head 4 the bridges 5, which carry the spindles 6 with the bevel gears 7, are attached. on of the adjusting shaft 3, the drive disk 14 is rotatable and the friction disk 13 is displaceable stored. These disks are pressed against one another by the springs 11 via the friction lining 15 pressed and form a slip clutch and a brake at the same time. The spring force is produced by turning the clamping nut 22 with lock nut 23. It works over the bearing 12, the friction disk 13, the friction lining 15, the drive disk 14, the Reel head 4, the pinion 25 and the collar 24, which is fastened to the adjusting shaft 2 is.

A second pinion 47 is on the adjusting shaft 2, but is rotatable - Arranged, which lies against the driver 48.

A locking pin 35 is displaceable in this driver 48 attached, which can be pushed into a hole 36 of the pinion 47.

There is a further interlock between the reel head 4 and the bearing housing 1 is not shown.

When spreading and tensioning a coil, the reel head 4 locked to the bearing housing 1 and the locking pin 35 pulled out. By a motor, the drive pulley 14 is now rotated forwards or backwards. she takes over the friction lining 15 with the friction disc 13, which via the feather key 20 the Adjusting shaft 3 rotates. With this, the pinion 25 rotates and drives aie bevel gears 7 on which the threaded spindles 6, which are mounted and supported in the back 5, rotates and thus moves the 'support arms radially. The pinion 47 rotates here ! in one direction on the adjusting shaft 3. At start-up and when the clamping torque is reached is, the drive disk 14 slips while the friction disk 13 stops.

When winding the lock of the reel head 4 is released and the Locking pin 35 pushed in so that the driver 48 with the pinion 47 connected is. As a result, the gear is the pinion 25 and 47 as well as the bevel gears 7 blocked.

When the drive disk 14 is driven, the friction disk 13 slips taken along and drives the reel via the adjusting shaft 3 and the reel head 4 at. The wrapping process now corresponds to that of the design according to Figure 1.

Another application example is shown in Fig. 7 with a reel shown with support segments 49 supported on the inside by wedges 50. The support segments 49 are supported with their wedges 50 on the support lugs 51, which are part of the reel shaft 2 are, from.

On the adjusting shaft 3 is the clamping nut 52, which is between Clamping claws 53 grip the support segments 49 and are secured against rotation by them are. When spreading and clamping, the adjusting shaft is, as already described, 3 rotated and screwed the clamping nut 52 inwards or outwards. This takes Via the clamping claws 53 with the support segments 49, which thereby radially on the wedges 50 be moved outwards or inwards.

Another application example is shown in Fig. 8 with a reel shown with support segments 49 supported on the inside by lever 54. The levers 54 are through joints 55 with the reel shaft 2 and through joints 56 with the support segments 49 connected.

The expansion levers 57 connect the support segments 49 to the expansion nut 59 via the joints 58. The expanding nut 59 can be displaced on the reel shaft 2 stored. By rotating the adjusting shaft 3 in the manner already described, the Expanding nut 59 moved and pulls the support segments with the lever 57, which move on an arc of a circle while tensioning the wrapping collar.

Structural details of the tensioning with support segments 49 are inherent known. The new inventive solution uses the drive in those described To shape.

The described facilities for winding and spreading are designed according to the invention so that any combinations and simplifications are possible are. For this purpose, the individual facilities are designed as modules that can be used as desired can be replaced or omitted according to a modular principle. This modular structure is also given for the other facilities, as shown by a few examples will.

In Fig.9, a reel according to the invention is shown in two views. The elevation shows how on the 4 sides of the square bearing housing 1 below the column 33 with the foot 34, above a rotatable boom 60 with a lifting device 61, on the right the motor 17 and on the left a pressing device 62 are attached.

In Fig.1 it is shown how between the bearing housing 1 and the column 33 a displacement device 29 is arranged.

Fig. 10 shows a double reel in elevation and plan.

This double reel is made up of 2 simple reels that are on a rotating device 63 are attached and through this by; 80 ° forwards or backwards can be rotated.

The Aob. 11 shows a reel on a pivot device 64.

This can be swiveled up to 1800 using a crank or motor. Displacement device 29, rotating device 63 and wilting device 64 can also can be combined and thus fit into the modular structure of the reel.

The advantages that can be achieved with the invention are the considerable simplification of the drive, reducing the acceleration and deceleration forces as well due to the universal application thanks to the modular structure. These advantages apply to both the user and the series production of the product the invention.

Claims (17)

Claims 1. Reel for unwinding and winding tape or wire, characterized in that the individual devices and functional elements as Structural units are formed and assembled according to a modular system can. 2. Reel according to claim 1, characterized in that the devices for winding and for spreading or tensioning to a drive unit with e are combined in a drive motor. 3. Reel according to Claims 1 and 2, characterized in that the drive unit with two parallel slip clutches, one for winding and one for spreading or tensioning, and both slip clutches driven by the same drive pulley. 4. Reel according to Claims 1, 2 and 3, characterized in that that with both slip clutches independently of one another by adjustable, tensioned Springs the frictional forces are applied. 5. Reel according to Claims 1, 2 and 3, characterized in that that with both slip clutches by an adjustable, common spring force the frictional forces are applied. 6. Reel according to claims 1, 2, 3 and 4 or 5, characterized in that that the effective friction diameters of the two slip clutches are different. 7. Reel according to Claims 1 and 2, characterized in that the drive unit is equipped with a slip clutch and the effect for winding and spreading or tensioning is switched by gear. 8. reel according to claims 1, 2 and 7 characterized that a bevel planetary gear is arranged in the reel head as a changeover gear, one bevel gear is firmly connected to the shaft as a sun gear, a second bevel gear as a sun gear, however, only via a switchable driver with the same shaft connected is. 9. Reel according to Claims 1, 2 and 3 or 7, characterized in that that the frictional forces of the slip clutches are applied by pressure cells or cylinders operated by means of compressed air or pressurized oil. 10. Reel according to Claims 1, 2 and 9, characterized in that that the pressure media for the actuation of the slip clutches of hand control devices or acted upon and / or changed by control programs. 11. Reel according to claims 1, 2 and 3 or 7, characterized in that that the slip clutches also serve as a brake. 12. Reel according to claims 1, 2 and 3 or 7, characterized in that that the slip clutch for winding during winding temporarily or continuously slips. 13. Reel according to claim 1. characterized in that the spreading device consists of 3 or 4 interchangeable Units that are screwed to the reel head. 14. Reel according to claim 1, characterized in that the bearing housing is provided with screw-on surfaces for the reel shaft as a central component, which It allow you to install various interchangeable devices and the entire Reel on a foot -eventuel with the interposition of other facilities -zu attach. 15. Reel according to Claims 1 and 2, characterized in that the individual devices are designed so that individual functional elements can be changed or exchanged or omitted. 16. Reel according to claims 1 and 2, characterized in that the bearing housings are designed and the various devices are arranged in this way are that you assemble a double reel from two normal single reels can. 17. Reel according to claims 1 and 14, characterized in that as exchangeable units drive for winding and spreading or tensioning, pressing device, Gallows with lifting mechanism as loading aid, shifting device, rotating device for double reel, Pivoting device are arranged.