DE1941112C - Device for cutting off individual coils or non-coiled pieces of wire as incandescent bodies for electric light bulbs or tubes - Google Patents

Description

The invention relates to a device for cutting off individual incandescent bodies fii Electric incandescent lamps or tubes that serve you or uncoiled E (rahtsHicke from an au

I 941 112

helical wire wound by a core wire or by backward movement. These two movements are one Uncoiled wire by means of a gene are so fast that it is continuous Electromagnet operated knife, whereby the forward movement of the wire is not interrupted Helical wire or the wire is either photoelectric, so that with the device according to the invention or scanned by a feeler lever and in Ab- 5 very many coils of the helical wire or very many depending on which the electromagnet is excited. Pieces of wire from uncoiled wire in time

There is a device of this type known unit, for. B. ten short coils per second, ab- (German Patent specification 645 383), whose light can be cut. Through the immediate tric scanning device, in the direction of movement arrangement of the lever provided with the knife of the wire, relatively far behind the cutting edge on the electromagnet, there is a simple clearing device is located, the with two spaced-saving training of the invention in front of each other arranged knives is provided. Reached by direction.

the two knives are each cut off a helix- electromagnets with bilateral stroke are on

cut. The photoelectric cell then receives if known (German patent specification 912 721). 15 In a further embodiment of the invention, that of the light source can have a low level of irradiation. Only then, electromagnets have two pot magnets, between when an approximately straight, uncoiled intermediate see where the disc-shaped armature is arranged, reaches the area of the photoelectric cell, the one guided in the two pot magnets receives this cell more light, which makes its guide shaft possesses, which is increased to the articulated λ connection the fortune. 20 levers are encompassed by an amplifier. The pot magnets cause large thereby an electromagnet, which over a lifting forces in both directions. This actuates the gear mechanism of the knives. Given the possibility of designing the device in such a way, this gear mechanism works this known that the distances between the central axis of the pivot axis device are relatively slow. In addition, since the scanning device of the cable and the central axis of the knife of the known device behave as 1: 2, so the cutting device is relatively far away, so that the pivoting path of the knife is relatively large with little wire deflection incorrect cuts is not. The pot magnets can be avoided when cutting through. very short electrical impulses with very large ones

Furthermore, a device of the above performance is energized. The bilateral hub of the Kind of known (German patent specification 1 063 270), the new 30 electromagnets, a return spring is saved. A scanning device consisting of a feeler roller. A block can be attached to the electromagnet,

serumen feeler lever. Here, the scanner has a bore into which a cutting nozzle device many helix lengths from the cutting rotatably and displaceably inserted, the one device removed so that the set-up has a hole for guiding the wire and through Whole multiple of the length of the helix is awkward 35 a compression spring in the direction of movement of the wire and incorrect cuts are pressed against the knife if the wire deflection is low. Here the are also unavoidable. Arrangement be made so that the hub of the

In addition, in known devices, the disc-shaped armature and the shaft are concealed, for example the electromagnetically operated knife when cutting is half the diameter of the hole in the the cutting nozzle for so long that the 40 cutting nozzle is. So the stroke of the anchor is so great Wire feed must be interrupted. The wire that just an exact cut of a helix is therefore vo :. a supply roll not evenly, b7w. a piece of wire is achieved, but unwound like a Mick, which means that the core wire can be used in a further embodiment of the invention

can break more often. In addition, the spiral can rewire the two pot magnets within one of them not without damage jerky by a 45 benden ring in the axial direction Annealing furnace are rinsed. arranged and between them and two assembly

The invention was: 'the object of the plates in which the ring is attached, resilient known devices of the type indicated above E ^ ments, z. B. rubber sheets may be provided. This in a simple and space-saving manner to train, resilient elements dampen when you put the that with uninterrupted, even, large 50 anchor shocks. For further cushioning Feed anyway precise and fast cutting is. According to the invention, this object is not achieved on the side opposite the lever solved in that the scanning device is attached directly. As a result of the rubber springs moves bar in front of the knife in relation to the DratbeweguiiR the electromagnet with the one attached to the lever arranged and the knife at the free end of a knife when cutting something in the direction of the wire electromagnet pivoted lever attached to the feed, which compresses the core wire arranges and this lever articulated with the anchor or the uncoiled wire with certainty verdes prevents two-sided stroke having electromagnet is connected. The knife can in a known manner as

The arrangement of the scanning device makes it un- 60 round knife and easily rotatable on the lever be stored indirectly in front of the knife with respect to the wire. Such a circular knife also has the movement results in the advantage that incorrect cuts already mentioned; provided with a sensing lever be avoided with certainty, because yes the known device. With this known pre-cutting immediately next to the scanning device direction, the circular knife is followed on a slide. By using an electro-magnet 05 that is strengthened by the armature of the electromagnet With a bilateral stroke, not only one will be extremely shifted. Due to the rotatable mounting of the rapid forward movement of the knife to the circular knife of the device according to the invention cut, but above all a fast one, the circular knife can turn so that it

" _Igly stressed over the entire circumference" jd jbj,, ulzt is what s.ch cmc 1 oil κ results in the life of this circular knife. The rotation of the customer knife can be started by the fact that the distance of the central axis dcsMiAS * J ™ of the vertical, which is moved from the M'Uclachs ^ of the nozzle to the lever, is about one digit of the knife radius ^D ™ ^u Jfc <Κλ knife relieved. This applies "I ¹ ^ X nozzle, which in the corresponding
is rotatably mounted This drchbd
Messers and the Schnc.ddusc: has info g £ fe ^ mäUigcn wear of both 1c c the advantage ual. thereby the maintenance of the e.hnclui gsgc Maß η V r direction and also the number badly disregarded.Ue ncr helix is reduced

_g £ "der Wendest or the

fe b is passed through, the g

f ^ ^ "^ _{m dcr} cutting nozzle, st.

_durdl ^b _d en _G | _{ühofe "G} e having a predetermined _SC | nvindigkeit hindurchgciührtc Wcndcldralit ode, _nidltg ewendeke wire is switched on immediately after the t Schneidduse of the device

_{fulm and guided through the} device with this Gc- _{| 0} speed. Thereby, the winding b of the annealed wire au _cinc supply reel, so an operation _u saved _{prevented) d cm Brcdl 'cn dcs hcim ülüllcI1 versp} rödeten Kcrn. _Through the regular pre-performance and in the annealing furnace, the, ₅ ^ ^ ^ g _Csch " _lU

Exemplary embodiments of the invention are shown in

simplifies the follow-up
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Simplifies the follow-up Y ^cri ' ^ar ^ ^r polarity reversal of an annealing furnace and cut photoelectric

Adaptation to other wcndcltypcn. By Umpojkn _{Ablaslvorri (} . _Lllu

the back tension can be "" Jj ^ntaL " ^{r N} _d ⁵ _,. · i _g , cinc brü

_{laslvorri (lllu}

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Stands serve as bridging positions ^ · ^{An Slcl} [ ^c ° ^LS _ with an i-olo resistor and

_F j _{7 a} circuit of the Schallgcrälcs de

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Photoresistor can be provided

Uniform load on the Fotow.de »taJjcs

reaches its entire surface and «

of Wcndcltypcn with very different increases

facilitated. Rnt-iiinuni 'the

For quick successive B ^c g ^ur § J, ^Lr . Both pot magnets can be provided with a clektron storage device, which amplifies the bridge, the pannunfe or the photo resistor and converts it into a control pulse, the " ^C ^ J" ™ thyristor, a capacitor with the .M ^ ^ncts J ^{ulc of} the one pot magnet links, nac one by a resistance ^ second thyristor einstelinarun a capacitor nil the coil of the other Topfmagn * th "rbindc simultaneously by a Konde sator the first ^

idh ™ ^cr ^^^^ S the

gg through one
Thyristor and after ™ ^cr .

other kept grazing. Each pot magnet 2 and 3 has a magnetic coil 5 and 6 embedded in it. The ring 1 is embedded in corresponding brackets of mounting plates 7 and 8 and then fastened. Between the mounting plates 7, 8 around ' ¹ the neten 2 and 3 resilient elements, / .. B. 9 and 10, are arranged. The mounting plate 8 is attached by means of rubber springs 11 at. ■ aem (ι ^^ Π 12 od. Like.

On the mounting plate 7 are a bearing block 13 and a block 14 rigidly attached. The bearing block 13 has an axis 14 'on which a Hcdci Ib seli "-ciiknai is stored. The lever 15 sets a ginning 16 of a shaft 17, which with a scucibcnföimigen Armature 18 is rigidly connected, which is located in the gap between the two pot magnets 2 and 3 can move. The shaft 17 is in the two pot

second thyristor gcioscn ^ wiiu. j _shai .

Sehaltgerät ¹ ^ bc. cmcm «laUv E wringency effort impulses vcm more a. ^^

def sSe des z? schneSenS wire determines the strength of the Too ^{Fast "ncl"} "· _{size Kräftc}

to n.ch unnoi g ^ g ^

^ SfelichSlÄ A ta vo SEtüng can by means of Die lichlcltklrisciic jsma> ζ direction of the

an adjusting screw in Bcwcgungsn g wire shifts. A [» _djc

electrical scanning process Kjnn hmstcIlschraulK verseIi thb.jrcr Koma

^fU ™ i'Se'JrpϊΐκηΐΑϋ the device is arranged behind an annealing furnace, at the upper end of the lever 15 is a mess. 19 rotatably mounted, which is designed as a circular knife. The arrangement here is such that du of the center axis of the axle 14 'and the central axis Oc of the knife 19, such as 1 distances from the central axis 21 of the shaft 17: behave. 2

The block 14 has a bore 21 in which a nozzle 22 is attached, which has a bore for passage leadership of a helical wire 24 has. The helical wire 24 is wound onto a core wire forms individual helix 25, between which there are somewhat straight intermediate pieces 25 '. These interim pieces 25 'can also be omitted. A tensioned compression spring 26 is supported on the nozzle 2, the m

acts at the other end on a cutting nozzle 27, which is rotatably and displaceably mounted in the container 21 and by the compression spring 26 against the Knife 19 is printed. The cutting nozzle 27, like the nozzle 22, has the same bore 23, dt-rch which the helical wire 24 is passed through.

As can be seen from Fig. 1, the central axis of the knife 19 from the to the lever 15 through the Central axis of the cutting nozzle 27 drawn verticals a distance 28 which is approximately one tenth of the radius of the knife 19. The hub of the disk-shaped armature 18 is approximately half the diameter of the bore 23 of the cutting nozzle 27.

According to Fig. 3, the device is for separating of coils from a coil wire 24 arranged directly behind an annealing furnace 29. Between the annealing furnace 29 and the device are two transport rollers 30, 31. With the same The filament wire becomes a windy wedge like in the annealing furnace 29 24 inserted into the bore 23 of the nozzle 22 and moved on.

Tn F i g. 3 also shows a photoelectric scanning device. It consists of a light source 32, whose light beams auftrcffen to the filament 25 and back from there through a lens 33 and κ pass auftrefTen to a light receiver 34, which is surrounded by a ground glass 35th The housings 36 and 37 of the light source 32 and the light receiver 34 are connected to one another and to a bracket 38 so that the housings 36, 37 can be adjusted in the direction of movement of the spiral wire 24 when the adjusting screw 38 is retracted. The housing 37 stands with its central axis perpendicular to the coil wire 24, while the housing 36 of the light source 32 encloses an acute angle with its central axis and the coil wire 24. The light receiver can be a gap-shaped photoresistor 39, which has a small time constant and forms a branch of an electrical bridge circuit, the bridge voltage being reversible according to FIG. 4. By reversing the polarity of the bridge voltage, cutting can be easily triggered when changing light – dark or dark – light.

According to FIG. 5 are two photoresistors of the same type, arranged as close as possible in parallel next to one another 40, 41 provided as bridge resistors.

According to FIG. 6, an optical gap 42 is provided instead of a gap-shaped photoresistor, the width of which can be changed by means of an adjusting screw 43. The gap 42 forms an opening a hollow body 44 which is colored white on the inside and which is shown on the right according to FIG. 6 of a grid-shaped Photo resistor 45 is completed.

F i g. 7 shows a switching device which has an amplifier 46, a first thyristor 47, a capacitor 48, an adjustable resistor 49, a second thyristor 50, a further capacitor 51, a further adjustable resistor 52, a third thyristor 53 and a further capacitor 54 . The bridge voltage controlled by the photoresistor is amplified by the amplifier 46 and converted into a control pulse, further control pulses being suppressed for an adjustable time. An undesired second impulse would be triggered if the intermediate pieces 25 'existed between the coils 25 and elongated turns, which, however, can be suppressed with the switching device. The control pulse switches the capacitor 48 via the thyristor 47 to the magnet coil 5 of the pot magnet 2. After a time which can be set by the resistor 49, the capacitor 51 is switched through a thyristor 50 to the magnet coil 6 of the pot magnet 3 and at the same time through the capacitor 54 of the Thyristor 47 is cleared and, after a time which can be set by the resistor 52, the thyristor 50 is cleared by the thyristor 53. When the magnetic coil 5 of the pot magnet 2 is excited, the knife 19 becomes effective and cuts a helix 25 from the helical wire 24. By actuating the knife 19 wire the bore 23 of the cutting nozzle 27 covered only about 2 msec long, so that practically during the cutting of the helical wire 24 can move continuously unhindered and by det cutting a disruption of the movement de; Helical wire 24 does not take place.

List of reference symbols

1 ring

2 pot magnet

3 pot magnet

4 ring

5 solenoid

η η> Λ entity p * tcr \ iilp

7 mounting plate

8 mounting plate

9 rubber plate

10 rubber plates

11 rubber spring

12 frame

13 bearing block

14 block
14 'axis

15 levers

16 opening

17 shaft

18 anchors

19 knives

20 central axis

21 bore

22 nozzle

23 bore

24 helical wire

25 helix

25 'spacers

26 compression spring

27 cutting nozzle

28 distance

29 Annealing Furnace

30 transport roller

31 Transport roller

32 light source

33 lens

34 light receivers

35 focusing screen

36 housing

37 housing

38 Adjustment screw

39 slit-shaped photo resistor

40 photo resistor

41 photo resistor

42 Optical gap

43 Adjustment screw

44 hollow body

ir

10

45 grid photoresistor

46 amplifier

47 first thyristor

48 capacitor

49 adjustable resistance

50 second thyristor

51 capacitor

52 adjustable resistance

53 third thyristor

54 condenser

For this purpose 2 sheets of drawings

Claims (16)

Patent claims: 1. Device for cutting off individual, as a filament for electric light bulbs or Tubes serving coils or uncoiled pieces of wire from a wound on a core wire Reversible wire or an uncoiled wire by means of an electromagnet operated knife, the reversible wire or the wire being either photoelectric or scanned by a feeler lever and, depending on this, the electromagnet is excited is, characterized in that the scanning device (housing 36, 37) directly arranged in front of the knife (19) with respect to the wire · 5 movement and the knife (19) at the The free end of a lever (15) pivotably mounted on the electromagnet is arranged and this Lever (15) articulated to the armature (18) of the bilateral Hi'b having electromagnet ver ao is bound. 2. Device according to claim 1, characterized in that the electromagnet has two pot magnets (2, 3) , between which the disc-shaped anchor (18) is arranged, the one in the be'den pot magnets (2, 3) guided shaft (17 ) has, which engages around the lever (15) for the gelerkigen connection. 3. Of respect according to claim 2, characterized in that that the distances of the central axis of the pivot axis (14 ') of the lever (15) and the Central axis of the knife (19> from the central axis of the shaft (17) behave as 1: 2. 4. Device according to one or more of the preceding claims, characterized in that that on the electromagnet a block (14) is attached which has a bore (21) in the one cutting nozzle (27) is inserted rotatably and displaceably, the one bore (23) for guidance of the wire (24) and by a compression spring (26) in the direction of movement of the wire (24) is pressed against the knife (19). 5. Apparatus according to claim 4, characterized in that that the stroke of the disc-shaped armature (18) and the shaft (17) is approximately equal to half the diameter of the bore (23) of the Cutting nozzle (27) is. 6. Device according to one or more of the preceding claims, characterized in that that the two pot magnets (2, 3) are arranged and displaceable in the axial direction within a ring (1) surrounding them between them (2, 3) and two mounting plates (7, 8) in which the ring (1) is attached, resilient Elements, e.g. B. rubber plates (9,10) are provided. 7. Device according to one or more of the preceding claims, characterized in that that the electromagnet on the side opposite the lever (15) by means of Rubber springs (11) is attached. 8. Device according to one or more of the preceding claims, characterized in that that the knife (19) is designed in a manner known per se as a circular knife and is light is rotatably mounted on the lever (15). 9. Apparatus according to claim 8, characterized in that the distance (28) of the central axis of the knife (19) from the vertical which is precipitated from the central axis of the cutting nozzle (27) on the lever (15), about a tenth d ~ s knife radius is. 10. Device according to one or more of the preceding claims, characterized in that that with photoelectric scanning as a light receiver a gap-shaped photo resistor (39) is provided with small time constants, the eif.i branch of an electrical bridge circuit forms, the bridge supply voltage being polarity reversible int (FIG. 4). 11. The device according to claim 10, characterized in that that immediately next to the photo resistor (40) and parallel to it a second one the same photoresistor (41) is provided and both photoresistors (40, 41) are used as bridge resistors serve (Fig. 5). 12. The device according to one or more of claims 1 to 9, characterized in that an optical gap (42) of different width with a subsequent, inside white colored hollow body (44) and an adjoining grid-shaped photo resistor (45) is provided as a light receiver \ ' · Ηά (V i g. 6). 13. Device according to one or more of the preceding claims, characterized in that an electronic SchJ'cerät provided is that strengthens the bridge voltage of the l'oto resistors and converts it into a Converts control pulse, the via a first thyristor (47) a capacitor (48) with the Magnet coil (5) of a pot magnet (2) connects, after one through a resistor (49) adjustable time via a second thyristor (50) a capacitor (51) with the magnetic coil (6) the other pot magi; ^ th (3) connects, where at the same time by a capacitor (54) the first thyristor (47) and after one by one Resistance (f! 2) adjustable by a time third thyristor (53) of the; wide thyristor (50) is deleted. 14. Device according to one or more of the preceding claims, characterized in that that the photoelectric scanning device (housing 36, 37) by means of an adjusting screw (38) is displaceable in the direction of movement of the wire (24). 15. The device according to claim 14, characterized in that instead of the photoelectric Scanning device (housing 36, 37) a through the adjusting screw (38) displaceable contact to Sensing of the helical wire (24) is provided, 16. Device according to one or more of the preceding claims, characterized in that that it is arranged immediately behind an annealing furnace (29) in which the spiral wire (24) or the non-coiled wire annealed and out at a predetermined speed is carried out, which is equal to the speed of the wire in the cutting nozzle (27).