DE29705560U1 - Wire feeder - Google Patents

Description

Wire feeding device

The invention relates to a
Wire feeding device, in particular for winding machines, comprising a wire pay-off stand and optionally a cart.

The current state of the art is that the wire for winding machines is stored in rolls that weigh up to 55 kg. These rolls are clamped in a frame on an axle. The wire is unwound from the roll and fed into a winding machine. To change the rolls, the empty roll is removed from the axle and a new wire roll is put on. Due to the weight of the full wire rolls, this change is very physically demanding, as the roll has to be lifted into the axle holder and inserted in such a way that it does not tilt, i.e. the roll rotates evenly when the wire is unwound. This change is particularly difficult if no lifting device can be used to change the rolls.

The object of the invention is therefore to provide a wire feeding device, in which a simple change of the wire rolls is possible.

The task is solved in that the wire pay-off stand has at least one, preferably two, conical, rotatably mounted receiving bodies for a wire roll. The cone is inserted into the axle hole of the roll and then secured. The conical shape automatically centers the roll. The roll therefore does not have to be fixed exactly in its position when changing.

If the wire pay-off stand and/or the cart has a height-adjustable support frame, the wire roll can be placed on the support frame provided on the cart in the warehouse, for example, and transported to the wire pay-off stand. The support frame of the cart and the support frame on the wire pay-off stand are set to the same height, so that the wire roll can easily be rolled from the cart's support frame into the support frame of the wire pay-off stand. The wire roll, after it has been transferred to the support frame of the wire pay-off stand, only needs to be lifted a few millimeters onto the rotation axis. Since the support frames are height-adjustable, the system can be used for rolls of different diameters.

The roll can be lifted out of the support frame relatively easily when clamping if a clamping device is provided for axially moving and securing the conical holding body. The narrow end of the cone is inserted into the roller's axle hole so that it sits on the conical surface at the top of the circumference. If the cone is pushed further into the axle hole, the roll slides on the conical surface in the direction of increasing diameter and is lifted out of the support frame. This clamping device can, for example, comprise a toggle lever. Due to the leverage, only minimal forces need to be applied to press the cone into the wire spool's axle hole. After turning, the toggle lever is secured.

The wire roll will not continue to roll when the wire removal is stopped if the conical holding body is designed with a brake

and preferably has a driver which can be positively carried by the roller.

A driver, which is firmly connected to the conical holder, engages in a driver hole provided on the wire roll. The rotational movement of the roll is then transferred to the conical holder. The wire roll cannot therefore slip on the cone.

The conical receiving body can be easily adapted to different diameters of the axle holes if the conical receiving body has detachable clamping bodies with different diameters on both sides.

If only two roller sizes with different axle hole diameters are used, the conical mounting body is designed so that it has two conical surfaces. When changing the roller size, the mounting body only needs to be turned over. The cone with the appropriate diameter can therefore be attached without difficulty.

If the support frame on the wire pay-off stand has a height-adjustable locking device, preferably a foldable leg, the support frame can easily be fixed at the desired height.

While the roll is being transferred to the stand, a secure connection between the cart and the wire pay-off stand is ensured if the wire pay-off stand and the cart are designed to be interlocked. The cart can then no longer roll away when the wire roll is being transferred to the wire pay-off stand.

The roll can be secured on the trolley during transport if the trolley has a transport lock on the carrying frame, preferably a pivoting bracket.

The bracket snaps into the axle hole regardless of the diameter of the roller if the bracket is spring-loaded in the direction of the swivel radius.

The roll can easily be raised to the appropriate height if the trolley’s carrying frame is height-adjustable using a lifting device.

A particularly robust design is achieved if the lifting device is designed as a chain drive with a detachable locking mechanism.

The wire feed device can be assigned a shelf or storage system that has a rear handle on at least one side. The cart has a correspondingly adapted safety handle. Even when the roll is transferred to the cart, the cart cannot roll away. The risk of injury is therefore reduced.

The invention is described in a preferred embodiment with reference to a drawing, whereby further advantageous details can be seen from the figures of the drawing. Functionally identical parts are provided with the same reference numerals.

The figures show in detail:

Fig. 1: A side view of the wire pay-off stand;

Fig. 2: a frontal view of the

Wire drain stand;

Fig. 3a,b: a view of the wire pay-off stand from above , showing the different positions of the clamping device;

Fig. 4: a partial view of the wire pay-off stand from the front, with a roll inserted

but is not yet clamped;

Fig. 5: a side view of the cart; Fig. 6: a view of the rear of the cart; Fig. 7: a view of the cart from above;

Fig. 8: a view of the cart, with a roller

is removed from a shelving or storage system;

Fig. 9: a view of the wire feed system when inserting the roll into the wire pay-off stand; and

Fig. 10: The wire drain stand and cart

assembled wire feeding system in a top view.

Fig. 1 shows the wire pay-off stand 1 in an operational state, with wire 2 being fed to a winding machine (not shown). The wire pay-off stand 1 consists of a frame 3 made of square tubes, which is attached to a base plate 4. The frame is supported by a strut 5. Two support frames 6 are slidably mounted on the frame 3. Their height can be fixed by supports 7. The lower part of the supports 7 is designed as a pivoting leg 8. The wire pay-off stand 1 shown is designed for two roll sizes. For larger rolls, the leg 8 is

folded away. The supports 7 are supported on the base plate 4 or the angle 9 attached to the frame 3. The wire rollers 10 are each inserted into conical receiving bodies 11 (not visible). A driver 12 is connected to the roller 10 and transfers the rotary movement of the roller to the cone 11 and the brake drum 13 connected to it. The brake drums 13 are acted upon by brake shoes 14, which are pressed against the brake drum 13 by a spring 15. The braking force can be adjusted using the spindle 16.

The wire 2 unwound from the rollers 10 is fed via guide rollers 17, which are attached to a swivel arm 18, for example to a winding machine.

A safety bracket 19 is provided on the base plate 4, into which a cart (not shown) can engage.

Fig. 2 shows the wire pay-off stand in a frontal view. A clamping device 20 is attached to the frame 3, which has a toggle lever 21 with which the axis 22 can be moved. A conical receiving body 11 is attached to the end of the axis. The receiving body 11 has two conical surfaces 23a, b.

It is therefore made up of two truncated cones whose base surfaces have different diameters and are connected to one another. The receiving body 11 has a central hole (not shown) with which it is placed on the axis 22. Depending on the axis hole of the wire roll 10, the receiving body 11 is fastened in such a way that the appropriate conical surface 23a, b engages in the axis hole. In the wire pay-off stand 1 shown in Figure 2, a wire roll 10 with a small diameter is inserted in the upper holder.

is therefore held by the small conical surface 23b. A wire roll 10 with a large diameter is inserted into the lower holder and is held by the large conical surfaces 23a.

On the opposite side of the frame 3, a bearing 24 is provided in which an axle 22 is rotatably mounted. A conical receiving body 11 is attached to the axle 22. A sleeve 25 connected to the axle is also provided, to which the driver 12 is attached. The driver 12 has two spring-loaded catches 26, each of which engages in the appropriate driver hole of the wire roll 10. The driver 12 transmits the rotary movement of the wire roll 10 to the axle 22. A brake drum 13 is provided at the end of the axle 22 opposite the conical receiving body 11. Brake shoes 14 act on this, which are pressed onto the brake drum 13 by a spring 15. The braking force can be adjusted using the spindle 16.

The brake can prevent the wire roll 10 from continuing to run after the wire removal has been completed.

Fig. 3 shows the wire stand 1 in a view from above, whereby in Fig. 3a the state during the exchange of the wire roll 10 is shown, while in Fig. 3b the wire roll 10 is clamped.

As shown in Fig. 3a, the wire roll is first placed in the support frame 6. The two conical receiving bodies 11 are spaced apart from each other so that the wire roll 10 can be inserted without any problems. Since in the case shown a wire roll 10 with a small diameter is inserted, the conical receiving bodies with their smaller conical surfaces 23b point in the direction of the wire roll 10. The movable conical

The receiving body 11a is retracted into the insertion and removal position by the clamping device 20.

To clamp the wire roll 10, the knee lever 21 is turned over, as shown in Fig. 3b, whereby the axis 22a and the associated conical receiving body 11a are moved in the direction of the wire roll 10. The two conical surfaces 23a are inserted into the axis holes of the wire roll 10. Due to the slope of the conical surface, the wire roll 10 is raised approx. 6 mm from the support frame 6 and can rotate freely. When the drum is rotated, the catch 26 of the driver 12 snaps into the driver hole of the wire roll 10, thereby establishing the connection between the wire roll 10 and the braking device 13, 14.

Finally, the wire is guided from the roll 10 over the guide roll attached to the swivel arm 18.

In Fig. 4, a section of the wire pay-off stand 1 is shown in a frontal view during the roll change. The wire roll 10 rests on the support frame 6. The conical receiving body 11a is retracted into its insertion and removal position by the knee lever 21 connected to the axis 22a, whereby the two conical receiving bodies 11a, b are sufficiently spaced that the wire roll 10 can be easily inserted into the support frame. The axis 27 of the wire roll 10 is not exactly aligned with the axes 22. The axes are spaced apart in the vertical direction by approximately 6 mm. Therefore, if the conical surfaces 23a are inserted into the axis holes 29 of the wire roll 10 by turning the knee lever 21, the wire roll 10 is lifted out of the support frame 6. During the insertion of the wire roll 10, the catches 26 provided on the driver 12 are extended by (not visible) springs. If the

If the wire roll 10 is clamped in, the catches 26 are pushed through the side wall of the wire roll 10 into the driver. If the wire roll 10 is rotated, the corresponding catch 26 snaps into the driver hole provided on the wire roll. In the case shown, a small roll is inserted into the wire pay-off stand 1. The support frame 6 is therefore secured in its upper position by the two legs 8 being positioned vertically and resting on the angles 9.

In Fig. 5, a cart 30 is shown with which the wire rolls 10 can be removed from a shelf or storage system 52 and transferred to the wire pay-off stand 1. The cart 30 has a frame 3 in which a support frame 6 is slidably mounted. The support frame 6 has a horizontal section 6a on which the wire roll 10 is stored during transport and a vertical section 6b with which the support frame 6 is slidably mounted in the frame 3 via the rollers 31. In the horizontal section 6a, a safety engagement 32 is provided, the function of which will be described later. On the vertical section 6b of the support frame, a movable safety bracket 33 is provided which engages in the axle hole 29 of the wire roll 10 during transport and prevents the wire roll 10 from falling off the support frame 6.

Wheels 34 are provided on the lower section of the frame 3 for transport. Furthermore, the frame 3 continues into a horizontal base frame 35, at the front end of which wheels 34 are also provided.

Handles 36 are provided at the upper end of the frame, with which the cart can be moved forward. In order to be able to lift the carrying frame 6, a chain drive 37 is provided. This has a

lower deflection point 38, approximately at the height of the base frame 35, and an upper deflection point 39. The deflection is carried out via gears. The upper deflection point 39 is acted upon by a shaft 40, which is moved by a crank 41. The crank 41 has a handle 42, which can be folded away during transport of the cart. A locking device 43 acts on the crank, so that the chain drive is self-locking.

Fig. 6 shows the cart 30 in a rear view. In the vertical sections of the frame 3, the support frame 6 is guided over the rollers 31. It is attached to the chain drive 37 via a connecting piece 44. The chain drive 37 is guided over a lower deflection point 38, which is attached to the lower horizontal section of the frame 3. The upper deflection point 39, which is attached to the upper horizontal section of the frame 3, is acted upon by a shaft 40, which is moved by a crank 41. The shaft 40 is acted upon by a locking device 43, which consists of a gear ring fixed to the shaft and a pair of claws 46, which engage in the gear ring.

Fig. 7 shows the cart 30 from above. A sliding bearing 47 is attached to the frame 3, in which a safety bracket 33 is mounted. The safety bracket can be pivoted around the axis of the sliding bearing 47 and also moved in a horizontal direction against the force of the spring 48. The safety bracket 33 has a handle 49 with which the safety bracket 33 can be moved in a horizontal direction. A projection 51 is provided on an arm 50, which engages in the axle hole of a wire roll 10 standing on the support frame 6.

Fig. 8 shows the removal of a wire roll 10 from a warehouse and its transfer to the support frame 6 of the cart 30. The support frame 6 is first raised and, after the cart has been moved to the shelf or storage system 52, lowered so far that the safety catch 32 engages in a projection 53 provided on the shelf or storage system 52. The cart 30 is thus secured against rolling away. The horizontal surface of the support frame 6 is at the same height as the shelf or storage system 52. The wire roll 10 can therefore be very easily rolled over a safety bar 54 onto the support frame 6. The wire roll 10 is then secured with the safety bracket 33. The support frame 6 is raised slightly with the chain drive 37 so that the safety catch 32 is released from the projection 53. For further transport, the carrying frame is lowered to the base frame 35 of the cart 30.

To transfer the wire roll 10 from the cart 30 to the wire pay-off stand 1, the support frame 6 of the cart 30 is first raised with the crank 41 via the chain drive 37. The cart 30 is then moved to the wire pay-off stand 1 so that the base frame 35 moves into the safety bracket 19. The support frame 6 of the cart 30 is lowered so far that it engages with the safety catch 32 in the support frame 6 of the wire pay-off stand 1. The cart 30 and the wire pay-off stand 1 are now firmly connected and the cart 30 is secured against tipping over backwards. The two support frames 6 of the cart 30 and the wire pay-off stand 1 now form a common plane so that the wire roll 10 can easily be transferred from the support frame 6 of the cart 30 to the support frame 6 of the wire pay-off stand. For this purpose, the safety bracket 33 is removed from the

Axle hole 29 is loosened and the wire roll 10 is inserted into the
Wire pay-off stand 1 rolled. In Fig. 9 both
The lower position allows the transfer of a large
Wire roll 10 and in the upper, dashed

shown position the transfer of a small wire roll 10 is shown.

In Fig. 10, wire pay-off stand 1 and cart 30 are in the transfer position for a wire roll 10 in the

View from above. The safety catches 32 engage in the support frame 6 of the wire pay-off stand 1. The projection 51 of the safety bracket 33 is pulled out of the axle hole of the wire roll 10 and the roll is thus released. The clamping device 20 is released in the wire pay-off stand 1 so that the
Wire roll 10 between the two conical
Receiving body 11a, b can be rolled.

· 9 · ■

16

List of reference symbols

1 Wire drain 2 wire 3 Frame 4 Base plate 5 strut 6 Carrying frame 7 Support

23a, b conical surface

10

leg

angle

Wire roll

11a, b conical support body 12 driver 32 13 brake drum 33 14 brake shoes 34

15 Spring 3 5

16 spindle 36

17 Guide rollers 37 18 Swivel arm 3 8 19 Safety bracket 39 20 Clamping device 40 Bearing

Sleeve

Rest

axis

Distance

Axle hole

cart

role

21

Knee lever

Security intervention

Safety bracket1

wheel

Base frame

Handle

Chain drive

lower deflection point

upper deflection point

Wave

crank

17

42 Handle

43 Locking device

44 Connector

45 Sprocket 46 Claw

47 plain bearings

48 Spring

49 Handle

50 Arm

51 Lead

52 Shelving or storage system

53 Lead

54 Fuse block

Claims (12)

Protection claims 1. Wire feeding device, in particular for winding machines, comprising a wire pay-off stand (1) and optionally a cart (30), characterized in that the wire pay-off stand (1) has at least one, preferably two, conical, rotatably mounted receiving bodies (11) for a wire roll (10). 2. Wire feed device according to claim 1, characterized in that the wire pay-off stand (1) and/or the cart (39) have a height-adjustable support frame (6). 3. Wire feeding device according to claim 1 or 2, characterized in that a clamping device (20) is provided for axially displacing and securing the conical receiving body (11). 4. Wire feeding device according to claim 1, 2 or 3, characterized in that the conical receiving body (11) is designed to be braked and preferably has a driver (12) which can be carried along by the roller (10) in a form-fitting manner . 5. Wire feeding device according to claim 1, 2, 3 or 4, characterized in that the conical receiving body (11) has releasable clamping bodies with has different diameters on both sides. 6. Wire feeding device according to claim 1, 2, 3, 4 or 5, characterized in that the support frame (6) on the wire pay-off stand (1) has a height-adjustable locking device (7, 8), preferably a foldable leg. 7. Wire feeding device according to claim 1, 2, 2, 3, 4, 5 or 6, characterized in that the wire pay-off stand (1) and the cart (30) are designed to be lockable with one another, preferably the wire pay-off stand (1) has an engagement (19) for the cart (30). 8. Wire feed device according to claim 1, characterized in that the cart (30) has a transport lock (33), preferably a pivotable bracket, on the support frame (6) for securing the roll (10) during transport. 9. Wire feeding device according to claim 8, characterized in that the bracket (33) is in the direction of the Swivel radius is spring-loaded to engage in rollers (10) with different diameters. 10. Wire feeding device according to claim 8 or 10, characterized in that the support frame (6) is height-adjustable by means of a lifting device (37). .U* &id; ·· 11. Wire feeding device according to claim 8, 9 or 10 ₇ , characterized in that the lifting device is designed as a chain drive (37) with a releasable locking device (43) is formed. 12. Wire feed device according to claim 1, characterized in that the wire feed device is assigned a shelf or storage system (52) which has a rear grip (53) on at least one side, into which a correspondingly adapted securing grip (32) of the cart (30) is designed to engage.