DE1552047A1 - Device for connecting upholstery springs by means of tensioning wires - Google Patents

Description

The invention relates to a device for connecting of the end turns of arranged in parallel rows Upholstery springs by means of cranked bends Bracing wires, each with a row of springs together with those on the end turns of the supplied Spring row of bracing wires resting on it in a feed channel from an admission position to a union division is brought with the adjacent row of feathers,. in which by turning the bracing wires there is a bend between the overlapping end turns of two

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to be connected springs through, whereupon the rows of springs moved apart and the bends tightened.

In the known devices of this type, the End turns of the leather with the help of bracing wires connected, whose training is S-shaped cranked. For this purpose, they are placed in parallel rows in feed chutes leathers arranged together with the bracing wires in a union position with the adjacent one Brought a row of feathers. There the end turns of the springs are placed at an angle to each other and thereby the S-shaped bends intertwined with the end turns by turning back and forth. Then the spring end coils brought back into an approximately parallel arrangement, pulled apart and bent the bends, These devices work due to the manufacturing tolerance of the springs, the height of which does not always match, not completely reliable. This is based in particular on the fact that the end turns of the springs are inclined must, otherwise the weaving of the S-formation will not be possible is possible, and that the bracing wires in several directions need to be rotated.

In addition, the filling of the feed chute prepares the known device into which the springs and bracing wires' be used by hand, difficulties,

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because the upholstery springs are somewhat compressed when inserted -being to compensate for different dimensions.

The invention is now based on the object of a device to create spring cores, in which the connection of the end turns of the springs with Help the bracing wires done in a simple manner can. In particular, the inclination of the end turns of the springs should be avoided and the use of the upholstery springs can be simplified into the feed chute. Furthermore Of course, safe and quick work should be guaranteed.

This object is achieved according to the invention in that the feed chute can be pivoted relative to the ground, has side walls adjacent to the end turns of each, which unfolded when the gutter was being charged and inclined `` slightly against each other in the unification division '' are so that the end turns of the following 3-wire row the end turns of the previous row of springs rest from the inside in approximately parallel planes, and that on the feed chute one of the bracing wires with their in Axial Looks U-shaped cranked and one at the free U-shaped lip, angled, flat lip, showing curvatures with the lip between the two end turns

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through until the turning device pivoting over the level of the inner end turn is arranged, as well as that the bending device deforming the bends at Hammers resting against the bracing wires and with a roller provided, when the spring core is advanced from its trajectory, moving hammers to bend the flat lip of the bends over the inner end turn *

According to the invention, a bracing wire is used, whose bends in the axial view the shape. Bines U with a flat lip adjoining the free leg. This makes it possible to make the bends of the bracing wires without inclining the end turns and weave into the end coils of the feathers while turning once. In the known device required bending process is modified in such a way that the roller of the counter hammers against the pressure the hammers the flat lip over the end turn of the following Row of springs bends. The adjustability of the side walls of the feed channel results in the calibration Advantage that the springs can easily be used. But it is also necessary so that the end turns of the following row of springs so in the union division be brought to bear that one coincides with the windings of the preceding Feather row from the inside in about p & tAlleietl levels issue"

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Preferably, the invention engages on the outside Each swiveling channel wall has an arm of a cam-controlled double lever pair and it acts on the Inside each channel wall a spring-loaded lever to press the spring end turn against the channel wall, The surfaces resting on the side walls of the channel the spring-loaded lever can be used to make a particularly safe To enable gripping of the spring end coils, be sawtooth-like.

According to the invention for holding the bracing wire a spring clip is provided at the outer end of the channel wall. This will facilitate the insertion of the bracing wire into the Feed channel simplified. If several bracing wires are to be fed in, there are of course several spring clips intended. '

It has proven to be particularly advantageous that the turning device when loading the gutter with the springs and Bracing wires can be tensioned by springs. This is possible because the bracing wires only take one step at a time Direction must be rotated.

To facilitate the loading of the feed chute and in particular to accelerate, is according to the invention provided that opposite the feed chute in the pick-up position a loading device with the central parts

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the springs releasably holding grippers and stops for the end turns of the springs is arranged. These The loading device is simply pressed onto the feed chute. The springs and bracing wires are from taken over the feed chute.

In order to make it easier to insert the springs into the loading device by hand, according to the invention the latter points to the stops leading guide surfaces on.

According to a further feature of the invention, the charging device on the tensioning wire that runs along the row of springs engaging magnet members.

Since the upholstery feathers are thinner in the middle than at the Ends are openings on a base plate of the loading device for receiving the protruding parts of the spring end windings intended.

In order to prevent the spring end coils from bending when the lip is bent, every hammer is in accordance with the invention assigned a surface supporting the spring end windings to be connected to one another. ·

Preferably, at the end of the surface supporting the spring windings, teeth protrude, which lift it up

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the overlapping parts of the winding and the bends. the. Prevent bracing wires through the hammer.

As a further safeguard against bending is after the Invention on both sides of the roller a curved curve supporting the end turns of the spring when the lip is bent Wall arranged. When the lip is bent by the roller, these walls run together near the edge of the End coil over.

Since the device for the manufacture of spring cores different Training, especially with various The distance between the rows of leather to serve are advantageously the hammers and counter hammers on parallel rods adjustable. . ■

Finally, it is within the scope of the invention that the extended parts of the successive bracing wires attacking swivel arms for progressive movement of the spring core are provided by the device.

Further features, details and advantages of the invention emerge from the following description of a preferred embodiment and with reference to the drawing. Here show:

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Pig. 1 is a plan view of a part of a mattress spring core

Fig. 2 shows a partial view of a crimping wire { Pig. 3 is a side view of a machine for manufacturing

position of Federkernenj Pig. 4 is a front view of the feeding device in FIG Inside the machine $

Pig. 5 is a partial view of the spring feed chute $ 6 shows a section along YI-YI of Mg. 5 | Fig. 7 is a section according to VII-YII of Pig * 5 Γ Pig. 8 a view in the direction of the arrow VIII of the Pig. * 5f

Pig. 9 is a partial view of a transport loading device j Pig. 10 a plan view according to Pig. 8p Pig. Heine view in direction of arrow XI of Pig. 9y

Pig.12 is a broken away side view of essentials Working members of the machina;

Pig. 13A, 13B, 130 and 13D show the work stages when applying the crank wires and

Pig. Heine's broken plan view d «r fig» 12, die showing the lower ligaments of the feathers.

The one in the Pig. 1 reproduced innerspring shows hot of cushion springs 10 of the tube shape to »parallel to The chain wires run 11, and the end turns of the feathers "which overlap in a small amount"

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ORIGINAL

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are through the crankings 12 of the wires 11 with each other connected. ^^ Öin this arrangement both the upper as auoh dit the lower end turns of the springs of the Crank wires held. In the area of their ends there are Kröpfdränkeι as "indicated at 13, between the end springs "Neighboring lend sheared. Both corner and end binding wires can be provided (not shown).

"In lig, 2 a crank wire 11 is shown in front of the I ¹ I in front of the corridor. When viewed from above on the wire end, the crankings 12 have a U-shape with a downwardly inclined by about 20 to the horizontal, to the free web of the IPa. Adjoining lip 14. The ends 15 of the Kröpfärahtes are bent at right angles to the wire for a later purpose.

The formation of the spring core is described below gend, suit reference to the Pig «3 described.

2Jie leather TO uni Kröpfraht® 11 are used in sufficient quantities of Hst £ d in the 'JJraneportlader 16. The uaa * r vlvä ämn in tine position above the ptdtr feed "runs 17 moved as soon as the trough is in an open position, so that the tread and cranked wire" are in the helper tilief | " fi * hrtf M * Bin »·

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is then rotated 90 ° and forward into the spring receiving part 18 of the machine is moved, where the springs are gripped by the machine, they overlap End turns with the end turns of the previous row of springs. The crank wires are then twisted, to be braided with the overlapping end turns of the springs, and the gutters are then peeled off. The innerspring is then one step forward moved, and the wires attached in the area of their bends 12. The spring core leaves in a number of Step up the rear outlet 19 of the machine where a shear device 20 cuts the ends 15 of the wires.

The machine will now be described in detail first with reference to Figures 5 to 8, select the spring feed chute represent.

The back consists of a flat base plate 21, a pair of side walls 22 pivotally mounted at 23 on the longitudinal sides of the base plate and a pair on the narrow sides of the base plate, running upwards? Indwalls 24 * The walls 22 are attached to the arms 25 and their pivoting movement is controlled by means of the levers articulated at 28. 26 and 27 reached,

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A number of hairy L-shaped levers 29 are attached to the Spring points of the gutter provided. The levers 29 are hinged below the channel at 30 and through the leather 31 loaded so that the outer sides 32 of their vertical Arms "iggen the pivoting side walls of the gutter are pushed. These outsides are for gripping der Peder "EndwindUngen 33 sagged like a saw. A number of half-cylinders 34 protrude from the side walls 22 inward. You pick up the leather used and wear it the spring clip 35 for holding the cranking wires 1t. Perner aind support stirrups 36 are provided, which prevent bolls, that the crank wires get into the interior of the spring clip 35. Angled lips 37 are arranged along the upper edge of each side wall 22, which the crank wires hold in position.

Awei spring loaded ^ are on each end wall 24 of the channel Turning device 38 for gripping the bent end 15 of the 1T crank wires provided. Every turner has one the wire gripping mouth 39 and is provided with external levers 40 by which they are adjusted or tensioned. In the lig. 8 is only the right turner in the cocked position in which he is held by the pivotable pawl 41.

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To get the first row of feathers »as described below, to hold gowns (not shown), e.g. several pairs of profiled thin walls with opposing hook-shaped files can be provided along the base plate of the channel at the locations of the L-shaped levers 29.

The senses are in their open top position through a A pair of supports 42 are held, which are attached to the base plate 21 and are arranged on the horizontal bar 43. As shown in FIG. 3, the bar 43 has at its end Tie rollers 44 with a pair of horizontal rails 45, whereby they back by means of the pivot lever 46 and can be moved.

On the base plate 21 fingers 47 protrude upwards, which into the on the transport loader 16 (see Figures 9 to 11) arranged socket pipes 48 engage.

Several transport loaders are provided, each of which has a base plate 49 of a length corresponding to ämt F "d"? - feed chute 17 and with a box set 50 as reinforcement they grip the upholstery spring 10 by embracing, fie * comparatively narrow central areas thereof. The long sides 52 of the base plate 49

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extend to the inside _v a both sides "to bgeschrägt to serve as guides for a einfaeiiee insertion of the springs." the FeÖerbandarme 51 are semicircular FÜhrungßMgel 53 disposed "11 to facilitate the insertion of wires the goitre.

On the base plate 49 are Magnefblöoke at intervals

54 tefestigtg dl® to accommodate the crank wires 11

55 are provided with recesses. From the Kastenuntereata 50 erstreoJtean & IAH spring arms 56, the spring-lndwindungen the untimely lindringen prevent the in the openings 57, and there are 58 12vorgesehen Führungsblöoke for holding the Braht & röpfuBgtn.

During operation of the loader fran sport Kröpfdrähte 11 each end of the MagnetblöclEe used in dif fluolitenden Ausnehmungsn 55 ^ai1 54 _t where they Wirden duroh set the magnetic Ansiehung. Tölster springs 10 are inserted between the spring band arms 51, the ends of which engage on the j edges 59 of the longitudinal sides 52 that have been removed.

In this position, it is held in place every final turn a weak pressure on the pen »

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practiced. .

Loaders wtMen danti Successively in a © STEL., Lung above aer spring ^ Zuführrinn "spent their

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Side walls 22 are spread outwards, then reversed and moved downwards during a first step until the springs 10 and crank wires 11 penetrate the channel and the angled end turns of the leathers are between the side walls 22 and the L-shaped levers 29 * The side walls 22 the backs are subsequently moved inwards, so that the springs are compressed and their end turns are gripped between the side walls 22 and the like toothed outer sides 32 of the I-shaped levers 29, which under spring action (31) come to rest against the inside of the walls 22 to be brought. During this movement, the upper length of the spring end windings lying against the edge 59 of the longitudinal side 52 is disengaged from this edge, so that they can now penetrate the openings 57. The bath is then moved downwards in a further step, whereupon the crank wires 11 are grasped by the spring clips 35 and the wire ends 15 penetrate into the mouth 39 of the turner 38. The Iranaportloader is then pulled back and moved to a loading position.

During this retraction, the crook wires become and spring due to the stronger grip of the channel links and removed from the loader in this way.

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Positioned in the grooves, the spring knots 60 (see fig, 1) "when looking at the machine, expressed using the example of a clock face, are arranged at 9 o'clock or 3 o'clock. the cranking lips 14 stretching in. The bent ends 15 of the cranking wires are grasped by the mouth of the spring-loaded turner 38, which is adjusted by hand or automatically after loading the channel.

It is of course possible to insert the springs 10 and crank wires 11 into the Rinn® by hand, so that the transport loader is then omitted. In this pail, an actuating rod (not shown) is provided on lever 26 so that the side switch 22 can be manually moved outwards "Inside" can be moved * In a further modification, several channels are provided, which are led out in a row after the machine part 18. It should be noted, however, that the use of a fram sport loader is indicated when a large number is reached and this is not the case should only be determined by the one or two workers **, which® the leather and crank wire should be directly \

■ i cash in the gutter eLttestasia »Similar! Transport loader and; ! "Eder hoof grooves can do other designs; used by machines for spring and spring production, where to connect the snd turns of the springs

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For example, spiral springs are used instead of the cranked wires will. In this case, the loaders and troughs only carry the spring.

The loaded «channel 17 is finally rotated by 90 °, so that it is opened in the direction of the spring-receiving part 18 of the machine, and moves forward against this part under the action of the pivot lever 46, which leads the senses the feathers into the fire-fighting device, whereby the The reference length 33A of the end coils is within the free length 33B of the end coils of the previous row of springs, as in 'Fig. 13A shown. In the area of the overlap of each pair of lower turns, the crankings of Kröpfdrahtββ are arranged in such a way that the U opens to the front and the lip 14 is almost vertical βtentι while the crank wire is exactly behind of the free length 33Ba The wire is then turned in the direction of the arrow in Fig. 8 by about a third of a turn the turner 38 rotated, which by an "organ in .den Clamping pawls 41 are released. The position of the wire shown in FIG. 13B is sufficient the U-shaped part of the crankings pass through the vertical position and the lip 14 extends a little upwards inclined forward. The crank wires chain them together Spring end turns with the end turns of the previous row of springs, so that the length 33A between the free

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length 35B and the stretched part of the wire and the Length 33B 2r ^ i ^ heen. of length 33A and the bracket of the U-shaped rope of the AlDltröpfung 12 lie.

The gutter is then removed during a first stage, and the crank wires are under the action of the .Free lengths 33B of the previous row of leather pulling force exerted from the .. channel. The croup lips 14 overlap the guide lengths 33A of the inner spring shelves, which aneolilizingly grasped by the misshapen area and against the effect of the. aägeartig / rf toothed Lever 29 can be partially withdrawn from the gutter. In this position-wfindan sioh the free and guide lengths the sioh overlapping "windings close together, as Big «13Ö shows«

During the initial removal of the channel, the protruding cranked wires are held in place as follows!

Two sets of claw-förjoigen Sohwenkanaen 61 (Figures 12 and H) would be rotated in opposite directions to grip the claw wires 11 between the springs. You are zieheti άβιν innerspring _t forward whereupon the springs entirely from the channel taken off, then the "intitt further step-AufnahmQStellung spring 'is verbradht to her.

On the upper and lower work surface of the spring holder., 30981770566

BATH ORIGINAL

station are spring fingers 62 to limit the expansion the springs "arranged when moving the gutter.

for the transport of the partially completed innerspring At least two driver fingers (not shown) can be provided on the rear of the machine, -the work in unison with the swivel arms 61 and pull the spring core through the machine.

The leather core is moved forward until the last inserted series of overlapping winding lengths 33A, 33B pass through a series of hammer ramps 63 has to carefully machined on both sides between the hammers 64 and a loan of rotatable counterhammers 65 to become. The hammers 65 are already in low Dimension moved inwards to guide the crankings inwards. In this position (Fig. 130) is the Crank wire has been turned through a small angle, like this that the lips 14 are slightly inclined downwards. The Ag4Be of the U-shaped part of the offset has' straight go through the vertical position, and it must with special For clarity, it should be noted that the angle between this axis and the lip is more than 90 ° amounts to.

Each hammer unit consists of a pair of walls 66, di · have a pair of forward facing teeth 67,

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which hold the indungary overlaps in place. Each counter hammer 65 "also consists of a pair of walls 68, between which an orphan 69 is arranged. The upper and lower hammers rotate in opposite directions, with the lower hammers being moved so that their""rollers 69 do a naeii exert pressure on the adjacent wire lips 14 downwards and backwards in order to make them bend as shown in fig hammers, which are formed kux-venfäsnig _ä press the Kröpfdraht * -having the Hammeraahn and also slide under the resilient guide length 3-3A "a reclining against V @ r ~ bends downward .bilden. after the bending, the zn Hämfer 65 moved under the work surfaces »■ to allow the bent overlaps to move freely.-, -

After bending, the ends of the crimping wire are sheared off by adjustable knives of the device '20 (see Pig. 3), which can be acted upon hydraulically by the pump 70, which in turn is driven by the electric motor 71 serving as the main drive of the machine (si « he S ¹ Ig. 4) «

BAD ORIGINAL 9Q9B17 / 0BB8

The motor 71 drives one of the cam disks 73, 74, 75 and 76 supporting shaft 72 on. In doing so, the cam disk 73 actuates the reciprocating, arranged on the shaft 77 Swivel lever 46, the cam disc 74, the swivel arm 61 mounted on the shaft 78, the cam disc ben 75, the hammer 65 drawn onto the splined shaft 79 (see FIG. 12) and finally drives the cam 76 the hydraulic pump 70 on.

During operation, the machine is set by assigning the hammer and counter hammer units or the heads accordingly 80 set, - carried by square shafts 81 and in position by an eccentrically arranged shaft 82 being held. The shaft 82 locates the units by compressing those provided on the housings of the units Rubber buffer 83 firmly on square shaft 81. The units can be controlled by a final series of Scissor spreads can be moved laterally, so that a uniform distance is given when the total width changes is. The hammers are pivoted and can be used to hold springs and wires of various diameters can be adjusted in terms of position and height by a screw assembly 84 (see Fig. 12). In this Case can be one spring-receiving channel or more than one

ORigi _Nal

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Groove extending from one end to the other is required length can be chosen and positioned.

At the beginning of the operation for the production of a Pederkern the first leg of springs is inserted into the channel 17, the end turns being held between the aforesaid hooks on the base plate of the gutter. Of course, this series of pedals can also be vdm. hand be inserted into the machine.

The first crank wire has a special shape with a crank designed as a simple ü, and this wire is applied by hand, after placing in the gutter if the end turns of the spring 10 are noticeably angled, so that when inserted into the machine, the crank wires outside the levels of the channel walls liqgen and on this Manner can be grasped by the pivot arms 61. The end turns (33A) of a subsequent row of pedals of the L-shaped levers 29 but also outside duroh the Intervention mii; the previous row of leather held, so that they are seized by the Schwekarmen 61.

The machine is fed successive rows of pedals 10 and crank wires 11 fed to the desired length of the feather front sight is made.

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In the case of certain types of cushion, e.g. motor vehicle seats, only the upper or lower end turn the spring crank wires are desirable, and the machine described can by removing the upper hammer and counter hammer units can be modified to produce such pads.

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Claims (13)

- »- ■ 1552U4T" "" 1 claims 1., Device for connecting the end turns of upholstery springs arranged in parallel rows by means of bracing wires provided with cranked bends, in which one row of springs is brought together with the bracing wires resting on the end turns of the supplied row of springs in a feed channel from a receiving position into a union position with the adjacent row of springs is, in which, by turning the bracing wires, a bend engages between the overlapping end turns of two springs to be connected, whereupon the rows of springs are moved apart and the bends are bent, characterized in that the feed channel (17) is pivotable with respect to the bottom (21), the spring-Eadwindungen (33) adjacent side walls (22), which are folded apart when the channel is loaded and inclined slightly against each other in the union position (1 "8), so that the end turns (33 A) of the subsequent row of springs correspond to the end turns ( 33 ^B ) of the previous row of springs rest from the inside in approximately parallel planes, and that on the feed channel one of the bracing wires (ii) with its axially cranked U-shaped lip and a flat lip (14) angled on the free U-leg Bends (12) with the lip between the two end turns (33 A, 33B) through to the level of the inner end turn 9098 17/0566 Disposed (33 A) pivoting turning device (38), _1st; as well as that the bending device resting against the bracing wires (6k) and provided with a roller (69), when the spring core is advanced out of its path of movement, bending the flat lip of the bend over the inner end turn (33 A). 2. Apparatus according to claim 1, characterized in that on the outside of each swiveling channel wall (22) there is a respective arm (25) in a cam-controlled double lever pair (26, 27) engages and on the inside of each channel wall a spring-loaded lever (29) for pressing the spring end turn (33) acts on the channel wall. .A device according to claim 1 or 2, characterized in that a spring clip (35) is provided to hold the bracing wire (11) at the outer end of the channel wall (22). k. Device according to one of Claims 1 to 3, characterized in that the turning device (38) can be tensioned by springs when the channel (17) is loaded with the springs (OK) and tensioning wires (11). 5. Device according to one of claims 1 to 4, characterized in that opposite the feed channel (17) in the receiving position a loading device (16) nit the central parts 909817/056 6 the springs (1O) releasably holding grippers (51) and stops (ty) for the end turn (33) of the springs is arranged. 6. Apparatus according to claim 5, characterized in that the loading device (16) has guide surfaces (52) leading to the stops (59). 7. Apparatus according to claim 5 or 6, characterized in that the loading device (i6) along the bracing wire (11) running along the row of springs (io) having attacking magnetic members (54). 8. Device according to one of claims 5 to 7t characterized in that openings (57) for receiving the protruding parts of the spring end windings (33) are provided on a base plate (49) of the loading device (16) are. 9. Device according to one of claims 1 to 8, characterized in that each hammer (64) one with each other to be connected spring end turns (33) is assigned to supporting surface (63) 10. Apparatus according to claim 9, characterized in that at the end supporting the spring coil windings (33) of the surface (63) protrude teeth (67), a lifting of the 909817/0566 bad original • Prevent the overlapping turn “part” (33 A, 35 B) and the bends (12) of the bracing wires (1 \) with the hammer (6k) . 11. The device according to claim 9 or 10, characterized in that on both sides of the roller (69) each one the Spring end turn (33 A) when bending the lip (14) supporting curved wall (68) is arranged. 12. Device according to one of claims 9 to 11, characterized in that the hammer (6k) and counter hammers (65) are adjustably mounted on parallel rods (81). 13. Device according to one of claims 1 to 12, characterized in that acting on the stretched parts of the successive bracing wires (11) Swivel arm «(6i) from stepwise port movement of the spring cores are provided by the device. 909817/0566