IE74180B1

IE74180B1 - Device for the production of coils for an electrical apparatus

Info

Publication number: IE74180B1
Application number: IE396791A
Authority: IE
Inventors: Hans Peter Mr Stribel
Original assignee: Stribel Gmbh
Priority date: 1990-11-15
Filing date: 1991-11-14
Publication date: 1997-07-16
Also published as: PT99523B; PT99523A; DE59102495D1; ATE109922T1; DE4036384A1; EP0486039A1; ES2064027T3; EP0486039B1; IE913967A1; JPH06151220A

Abstract

For the production of electrical coils of electrical technology apparatuses it is proposed that the coils optionally be stored in an intermediate store after leaving the coil winding machine and before further processing in subsequent stations, and that they be called up optionally from said intermediate store. <IMAGE>

Description

Device for the production of coils for an electrical apparatus The invention relates to coils for an electrical apparatus precharacterising part of Claim 1 a device for the production of having the features of the In a device of this kind known from US Patent Specification 3,938,748, the coils wound in the coil winding machine may be advanced to a downstream workstation by means of a transport device rotatable about an axis. A coil winding step may be carried on on the coils one after another and several additional working steps may be carried out for finishing the work. During the coil winding steps, each lasting approximately 10 seconds, the other coils already located at the downstream workstations must nonetheless wait at the station in question for the entire 10 seconds, even though the working time at these stations may last only approximately 1 second.

It is an object of the invention to develop a device having the features of the preamble to Claim 1 such that a uniform flow of 741 80 - 2 production may be achieved by simple means.

This object is achieved according to the invention by the characterising features of Claim 1.

Advantageous embodiments and modifications of the invention are indicated by the features of the subsidiary claims.

Further advantages and important details of the invention are to be drawn from the following description and the drawings, which show preferred embodiments in schematic representation by way of example.

Figure 1 shows a device according to the invention for the production of coils, and Figure 2 shows an electrical coil produced by the device.

The apparatus or device shown in Figure 1 is provided for the production or manufacture of electrical windings or coils 2, which may be used for electromagnetic relays or other electrical equipment.

The coils (Figure 2) may have a winding or coil body 3 formed preferably from plastics, which has a preferably through hole 4, for example for reception of a winding core not shown here, and two end walls 5, 6, which delimit the ends of the coil winding 8 which is formed from thin wire 7.

At one end wall 5, electrical connecting leads or conductors 9, 10 may be provided, which are bent in such a manner that the one ends 11, 12 of the conductors extend over the coil winding 8, while the other ends 13, 14 of the conductors extend in different directions on the opposite side of the end wall 5 and may be bent in different configurations. 741 80 - 3 The apparatus 1 may suitably have a sorting station 15, in which the coil bodies 3 are so aligned that they take up a defined disposition. From here, the coil bodies 3 come to a position monitoring station 16, in which the disposition of the coil bodies 3 is controlled and any coil bodies 3 which are not perfectly aligned are rejected and removed. The coil bodies 3 which are regulated in regard to their disposition are then fed to a mounting or fixing station 17, in which the connecting conductors 9, 10 are secured in position. The connecting conductors 9, 10, which may be elongated by a wire drawing roll, are here pushed into receiving openings as wire portions which are still straight and have not been bent. The receiving openings are formed in the end wall 5 of the coil body 3. The conductor ends 11, 12, 13, 14 project out on opposite sides of the end wall 5, as shown in symbol form in the fixing station 17.

After the connecting conductors 9, 10 have been fixed, the coil bodies 3 reach the coil winding machine 18, in which the coil wire 7 is wound onto the coil body 3, so that a coil winding 8 is formed, as shown in Figure 2. In the coil winding machine 18, a number of coil bodies 3 may be wound at the same time with the winding wire 7 and finished.

Beside the coil winding machine 18, there is located a temporary store 19, which is provided for reception of the coil bodies 3 provided with the coil windings 8. As can be gathered from the representation in Figure 1, the temporary store 19 may have a storage drum 20, which may consist preferably of two spaced apart end portions or components 21, 22 and transverse struts or members 23 arranged between these. Storage drum 20 is rotatable about an axis 24, which may be horizontally mounted. On the transverse members 23, pin-form winding or coil holders 25 may be provided, which are arranged at a spacing from one another and extend away from the transverse members 23 in the form of spikes. The thickness or the diameter of the coil holders 25 may be a little less than the diameter of the hole 4 of the coil body 3, so that the coil holders - 4 25 may engage in the holes 4 of the coil bodies when the coil bodies 3 are placed on the holders 25. The temporary store 19 may be arranged in such a manner that two or more different kinds of coil may be accommodated. In this regard, it may be desirable to form Ί 5 different kinds of coil holders 25, so that for example coil holders which are thicker and thinner in diameter may be alternately i provided at a spacing from one another on the transverse members 23. The capacity of the temporary store 19 is preferably selected so that a multiplicity of the coils wound in the coil winding machine 18 for each unit of time may be accommodated. It lies within the scope of the invention to equip the temporary store 19 not with the storage drum 20 rotatable about the axis 24, but to provide a storage unit formed in a constructionally different manner, which for example may have a frame, a ring, a linear or flat bed store or the like.

According to the representation of Figure 1, a soldering station 26 may suitably be arranged beside the temporary store 19.

At this location, the ends of the coil wires 7 may be automatically soldered onto the conductor ends 11, 12 of the connecting conductors 20 9, 10. From the soldering station 26, the coils 2 reach a winding wire tensile stress relief station 27, in which the hitherto straight conductor ends 11, 12 of the coil connecting conductors 9, 10 are bent around so that they extend into the coil winding space, as shown in Figure 2. In this manner, the hitherto relatively stretched 25 tensioned end regions of the coil wire 7 are stress relieved, so that breakage of the wire 7 is substantially avoided. As Figure 1 shows, after the winding wire tensile stress relieving station 27, a finishing station 28 may be provided, in which the other conductor ends 13, 14 of the connecting conductors 9, 10 are bent around out of 30 their straight disposition in the manner necessary for subsequent fixing, as is to be gathered from Figure 2. After leaving the finishing station 28, the windings 2 may suitably be fed to a palletising station 29, which may consist of a pallet feed 30, a pallet loading location 31, and a pallet discharge location 32. At 35 the pallet loading position 31, empty pallets fed in from the pallet - 5 feed location 30 are loaded with coils 2 leaving the finishing station 28. This is carried out in such a manner that each individual coil 2 is loaded onto the pallet for further transport in a safe and damage free manner. At the pallet discharge location 32, the pallets loaded with the coils 2 may be stacked. After a s> predetermined height of stacking is reached, the loaded pallets may be transported away. * As shown in Figure 1, the apparatus or device 1 may have a transport device or apparatus 33, which is displaceable to and fro, for example on a railed track, in front of the coil winding machine 18, the temporary store 19 and the soldering station 26. The transport device 33 is provided for reception of the coil bodies 3 and has for this purpose also coil holders 25, which may be formed in the same manner as the coil holders 25 of the temporary store 19.

The device 1 may have a preferably electrical control arrangement, which associates the coil winding machine 18, the temporary store 19 and the downstream work station 26 with one another in such a manner that selective loading of the temporary store 19 and the downstream work station 26 is possible. When the downstream workstation 26 is for example under maintenance or is inactive for other reasons, the coils 2 may be loaded into the temporary store 19 from the coil winding machine 18 by means of the transport apparatus 33. If the coil winding machine 18 or one or more of the stations 15, 16, 17 upstream of it are under maintenance or the like, the coils 2 may be withdrawn from the temporary store 19 by means of the transport apparatus 33 and fed to the downstream workstation 26. If both the coil winding machine 18 and the downstream workstation 26 are active and the temporary store 19 is full, the coils 2 may be transported by the transport apparatus 33 past the temporary store 19 directly to the downstream workstation 26.

The drive control of the device 1 may preferably be so ϊ: arranged that temporary storage and retrieval of coils 2 from the - 6 ' 5 i temporary store 19 takes place in dependence on the speed of production of one or more of the workstations 15 to 18 and 26 to 29 which are associated with one another from the control technology point of view. In addition, it may be desirable to arrange the control in such a manner that both the production speed of the coil winding machine 18 and also the production speed of the downstream workstation 26 may be selectively adjusted in dependence on the number of coils 2 in the temporary store 19.

A substantial advantage resides in that by the selective introduction of the temporary store 19 matched to production conditions, a substantially continuous flow of production may be achieved. In the event of the coil winding machine 18 being inoperative, for example on account of conversion for another design of coil or for loading with winding wire, the workstations 26 to 29 located after the temporary store 19 may continue production without interruption, in that the coils 2 necessary for continued operation are recalled from the temporary store 19 by the transport apparatus 33. In the event of an interruption at one of the stations 26 to 29 located after the temporary store 19, for example by an interruption in soldering, a lack of pallets, machine resetting or repair, the wound coil bodies 3 in the coil winding machine 18 may be loaded without any interruption into the temporary store 19, so that the workstations 15 to 18 located upstream of the temporary store 19 may also continue production without interruption. To this end, it may be advantageous in the normal flow of production to have the temporary store 19 approximately half full, so that in case of necessity, either further filling up with windings or withdrawal of coils may take place. Suitably, the device 1 is controlled in such a manner that the workstations before and after the temporary store 19 may be driven at different speeds, for which purpose suitable control signals may be provided in dependence on store content.

Claims

1. Device for the production of coils for an electrical apparatus, especially electromagnetic relays, the device comprising a coil winding machine (18), at least one finishing station (26 to 29) r for the wound coils (2) and a transport apparatus (33), traversable between the coil winding machine (18) and the finishing station (26 * to 29), characterised in that a temporary store (19) for the coils (2) is disposed between the coil winding machine (18) and the finishing station (26 to 29), and that the coil winding machine (18), the temporary store (19), the finishing station (26 to 29) and the transport apparatus (33) are linked together by a control drive in such a manner that the temporary store (19) and the finishing station (26 to 29) can be fed as desired by means of the transport apparatus (33) in such a manner that the transport apparatus (33), if the finishing station (26 to 29) is inactive and the coil winding machine (18) is active, loads the coils (2) into the temporary store (19), if the finishing station (26 to 29) is active and the coil winding machine (18) is inactive, takes the coils (2) from the temporary store (19) and supplies them to the finishing station (26) and, if the temporary store (19) is full, transfers the coils (2) from the coil winding machine (18) directly to the finishing station (26 to 29).

2. Device according to the preceding claim, characterised in that the storage and calling-up of the coils (2) takes place as a function of the production rate of the coil winding machine (18) and/or of the finishing station (26 to 29).

3. Device according to one or more of the preceding claims, characterised in that the production rate of the coil winding machine (18) and/or of the finishing station (26 to 29) can be influenced by the quantity of coils (2) stored in the temporary store (19). ο

4. Device according to one or more of the preceding claims, characterised in that the temporary store (19) is generally - 8 drum-shaped and rotatable about a preferably horizontal axis (24) and preferably possesses holders (25) for the coils (2) disposed on the periphery of the drum.

5. 5. Device according to one or more of the preceding claims, characterised in that the temporary store (19) possesses transverse members (23) between two spaced apart end components (21, 22), on which transverse members the coil holders (25) are mounted. 10

6. Device according to one or more of the preceding claims, characterised in that the temporary store (19) is provided for receiving the coil bodies (3) provided with coil windings (8).

7. Device according to one or more of the preceding claims, 15 characterised in that the coil holders (25) of the temporary store (19) are of different constructions for receiving different coils (2)

8. Device according to one or more of the preceding claims, characterised in that the finishing station (26), disposed behind the 20 temporary store (19), is constructed as a soldering station for fixing the coil wire ends.

9. Device according to one or more of the preceding claims, characterised in that before the temporary store (19) there are 25 disposed a sorting station (15) and a position monitoring station (16) for the coil bodies (3), a fixing station (17) for coil wire connecting conductors (9, 10) and the coil winding machine (18), and behind the temporary store (19) there are disposed the soldering station (26), a coil wire tension relieving station,(27) and a 30 finishing station (28) for the coil wire connecting conductors (9, 10. ) and also a pallet station (29) for the finished coils (2).

10. Device as defined in Claim 1 for the production of coils, substantially as described herein with reference to the accompanying 35 drawings.