EP0515581B1 - Dispositif de fabrication de rouleaux en un tissu d'acier a ressorts - Google Patents

Dispositif de fabrication de rouleaux en un tissu d'acier a ressorts Download PDF

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Publication number
EP0515581B1
EP0515581B1 EP91914185A EP91914185A EP0515581B1 EP 0515581 B1 EP0515581 B1 EP 0515581B1 EP 91914185 A EP91914185 A EP 91914185A EP 91914185 A EP91914185 A EP 91914185A EP 0515581 B1 EP0515581 B1 EP 0515581B1
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EP
European Patent Office
Prior art keywords
winding
knit fabrics
station
coil
winding spindle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91914185A
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German (de)
English (en)
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EP0515581A1 (fr
Inventor
Hans Kühl
Jörg WEINSCHENK
Martin Hoffmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hutchinson Stop Choc GmbH and Co KG
Original Assignee
Stop Choc Schwingungstechnik GmbH and Co KG
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Publication date
Application filed by Stop Choc Schwingungstechnik GmbH and Co KG filed Critical Stop Choc Schwingungstechnik GmbH and Co KG
Priority to AT9191914185T priority Critical patent/ATE105217T1/de
Publication of EP0515581A1 publication Critical patent/EP0515581A1/fr
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Publication of EP0515581B1 publication Critical patent/EP0515581B1/fr
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F33/00—Tools or devices specially designed for handling or processing wire fabrics or the like
    • B21F33/002—Coiling or packing wire network
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/32—Tongs or gripping means specially adapted for reeling operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5198—Continuous strip

Definitions

  • the invention relates to a device for producing coils from spring steel fabric.
  • DE-A-3 012 297 describes a winding device according to the preamble of claim 1, in which the cutting station is provided at the rear end of a carriage, over which the band to be wound runs to the winding mandrel.
  • the carriage can be moved towards and away from the winding mandrel by two independent servo drives and can also be adjusted in height so that the tape transport plane is essentially tangent to the finished winding when the tape is cut off at the end of a winding process.
  • the beginning of a new band section is taken along by an empty winding mandrel by frictional entrainment.
  • Spring steel knit coils are an intermediate product in the manufacture of all-metal spring cushions. So far, the knitted fabric has been cut to length manually and wound up. The outer end of the knitted piece is fixed by hand with a steel wire to the layers below. This fixation must be so firm that the outermost knitted fabric not only remains reliably firm not only during the step of compacting the knitted fabric in a press but also later when the spring cushion is used, so that the spring cushion does not wind up or there is no risk of injury.
  • the present invention is intended to provide a device which enables the automated production of coils from spring steel knitted fabric.
  • the gripping means automatically come into engagement with the knitted fabric when moving the transport arm in one direction while the withdrawal of the transport arm in the other direction automatically leads the gripping means out of the knitted fabric.
  • the gripping means can slide on the spring steel knitted fabric and do not need to be completely lifted off the knitted fabric. This allows the returning transport arm to tension and brake the knitted fabric, which is advantageous in terms of a clean and uniform winding of the knitted fabric.
  • the development of the invention according to claim 4 is advantageous in terms of a secure grip and a good alignment of the gripped portion of the spring steel knitted fabric on the movement plane of the transport arm. If areas of the knitted end were to hang down, it would be difficult to apply the knitted end to the winding mandrel.
  • the transport arm can still slide on the knitted fabric when the first knitted layers are applied to the winding mandrel and can press it on.
  • the increase in diameter of the winding is compensated for by pivoting the end section of the transport arm.
  • the transport arm When pulling back into the starting position, the transport arm then runs under sliding friction on the top of the knitted fabric, the pivotable end section increasingly returning to the position in alignment with the main section of the transport arm.
  • the pivotable end section which carries the gripping means, tightens and spreads the knitted fabric and thus contributes to a uniform winding.
  • the front and rear end positions of the transport arm can be adjusted in a simple manner. A readjustment of these end positions is always necessary when changing from one type of winding to another.
  • the development of the invention according to claim 8 has the advantage that winding mandrels of different diameters can be used. It is thus possible to produce sleeve-shaped coils with different inner diameters on the same device, and all that is required for the changeover is to pivot the common frame of the cutting station and the transport arm guide in such a way that the transport arm runs essentially tangentially onto the winding mandrel.
  • fixing heads of a fixing station engage between the pressing fingers of the pressing device, and in this way it is possible to fix the outermost knitted fabric layer in the immediate vicinity of its end. So you only have a very short section of the knitted fabric projecting beyond the fixing point. This is simple in terms of Handling the knitted fabric and advantageous in terms of avoidance.
  • a device has the advantage, on the one hand, that the power supply for the micro welding heads can be small, since it only needs to provide the current required by a micro welding head. Since only one current path is produced at a given point in time, the various micro-welding points are also welded equally well, whereas if all micro-welding heads were subjected to current at the same time, different resistance values of the material in the vicinity of the micro-welding points would lead to different quality of the welding points.
  • a device according to claim 19 is mechanically particularly simple and can also be used on knitted fabrics which are not suitable for micro-welding due to the choice of material and / or the mesh size.
  • a finished winding is reliably and reproducibly pulled down from the winding mandrel equipped with gripping means. This facilitates a defined feeding of the finished roll to a downstream work station, e.g. a weighing station.
  • the winding mandrel is simultaneously driven in the direction of rotation when winding the opposite winding direction when the finished winding is pulled down by the stripping body, this greatly facilitates the pulling down of the finished winding.
  • the end piece of the knitted tape which after cutting from the continuous bank lies between the cutting station and the winding mandrel, results in a predetermined, possibly also odd number of knitted layers on the winding, for different ones Outside winding diameter.
  • 10 denotes a knitted belt which is fed from the left by a conveyor device, which is not yet shown in FIG. 1.
  • the knitted band is produced by knitting a hose from spring wire, compressing the hose into a double-layered bench and providing this band with a waffle pattern (embossing).
  • Such a knitted fabric is porous and flexible, but has a certain inherent rigidity.
  • This tape is supported by a guide plate 12, the end of which also serves as a shear bar for an intermittently operated knife bar 14.
  • FIG. 1 a shows schematically the operating state of a machine for producing windings, which contain a predetermined length of knitted fabric, at the beginning of a winding cycle.
  • a winding mandrel 16 which is arranged at a predetermined distance y in front of the end face of the guide plate 12 is empty, and the front edge 18 of the knitted belt 10 produced by the last actuation of the knife bar 14 is flush with the end face of the guide plate 12.
  • a transport arm designated as a whole by 20, which can be moved to the right and left in FIG.
  • the transport arm 20 has a long plate-shaped main section 22 which carries a front arm end section 26 via a hinge 24.
  • the hinge 24 is arranged above the plane of the main section 22, and the opposing end faces 28, 30 of the main section 22 and arm end section 26 thus form a stop which defines the precisely aligned position of the arm end section 26.
  • a leaf spring 34 is fastened to the main section 22 by means of a screw 32, the free end of which slidably engages the arm end section 26 and thus elastically prestresses it into the position shown in FIG. 1a).
  • the underside of the arm end section 26 is occupied at the front arm end with gripping wires 36 which run obliquely forwards and downwards. Their length and the distance between the transport arm 20 and the guide plate 12 are matched to one another in such a way that the gripping wires 36 in the starting position shown in FIG.
  • FIG. 1 b shows the state shortly before the front end of the knitted belt reaches the winding mandrel 16. In this position, the knitted tape end is already in the path of hook-shaped gripping wires 38, which are arranged axially one behind the other along a surface line of the winding mandrel 16.
  • the winding mandrel 16 is simultaneously rotated clockwise, and since the position of its axis of rotation is chosen so that the lateral surface is at the same height as the top of the guide plate 12, the knitted fabric 10 runs tangentially onto the winding mandrel.
  • the obliquely angled end sections of the hook-shaped gripping wires 38 work into the front end of the knitted belt 10 and take it with them when the transport arm 20 is then stopped in the position shown in FIG. 1b).
  • the inclined position of the gripping wires 36 now also makes it easier for the knitted tape 10 to slide down from the gripping wires 36. These are now under the pretension of the leaf spring 34 on the upper side of the knitted tape 10 when it is wound onto the winding mandrel 16.
  • the transport arm 20 is initially left to stand still for some time until a few layers of the knitted belt 10 are wound onto the winding mandrel 16, an operating state is achieved as shown in FIG. 1c).
  • the arm end section 26 is now pivoted upward with further tensioning of the leaf spring 34 and serves as an elastic pressing rake which ensures that the first layers are neatly wound onto the winding mandrel 16.
  • the winding up of additional layers is then less critical, and within that for completion of the winding required winding time, the transport arm 20 can already be moved back to its starting position, as shown in Figure 1d). During this retraction, the gripping wires 36 slide again on the upper side of the knitted fabric 10 and tighten it and lay it wide.
  • FIG. 1d is also schematically designated a pressure spring, generally designated 40, which presses the wound material against the winding towards the end of the winding process.
  • Figure 1e shows the situation after the complete return of the transport arm 20 to its starting position and immediately before the knitted tape 10 is cut by the cutter bar 14.
  • Figure 1f shows the situation immediately after cutting the knitted fabric; it can be seen that an end section of the knitted belt, designated 42, takes on a spiral shape after the tension has been removed due to its flexibility and bending stiffness.
  • the length of the end section 42 is dimensioned such that it just results in a predetermined number of layers on the outside of the winding, in the exemplary embodiment considered here a little more than 5/4 layers.
  • FIG. 1g) and 1h) now show the last two final steps in the production of a tightly closed knitted tape roll.
  • these two steps are carried out in a different work station of the machine than the winding shown in the sub-figures 1a) -1f).
  • the winding mandrel 16 is carried together with the winding carried by it into this other work station, the fixing station.
  • the pressure spring 40 is rotated counterclockwise, in which case it then places the end section 42 over the support body 44 and then winds it up again somewhat more than 360 °. This state shown in FIG.
  • 1h thus comprises two layers of knitted fabric lying one above the other over the support body 44. These can then be firmly connected to one another by a fixing head 46, which is only schematically indicated in FIG. 1 and which can be, for example, a micro welding head, as will be described in more detail later.
  • the support body 44 generates the reaction force necessary to fix the two outermost winding layers. If the fixing head is a welding head, the support body 44 can also represent the counter electrode.
  • the pressure spring 40 In order to be able to leave the pressure spring 40 above the support body 44 even when the outermost winding layers are fixed, the pressure spring 40 has a plurality of pressure fingers 48 lying axially one behind the other, and the fixing heads 46, which produce a plurality of fixing points one behind the other along a surface line perpendicular to the drawing plane through the spaces between the pressure fingers 48 access to the outer layers of the roll.
  • FIG. 2 shows details of a fixing head 46 which connects the two layers of the knitted tape lying one above the other via the support body 44 by needles.
  • the fixing head has a punch 50 which is movable in a guide 52 in the vertical direction and separates clips from a clip rod (not shown in more detail) and moves them downward.
  • a clip rod not shown in more detail
  • two deflection grooves 54, 56 are provided, which cooperate with the free ends of the clamps 58 and deflect them, albeit somewhat more than with conventional needles. On in this way the ends of the staple legs pass through the two knitted layers a second time.
  • the support body 44 can be pulled axially out of the finished winding 60 and the winding can be pulled off the winding mandrel 16 , as will be described in more detail later.
  • FIG. 3 shows a modified fixing head which is provided with a discharge channel 62 for hot melt adhesive.
  • the adhesive released by the fixing head 46 penetrates the two outermost layers of the knitted fabric and arrives in a longitudinally arcuate groove 64 in the upper side of the support body 44. If the fixing head 46, which is provided on the axial side surfaces with recesses 66 of the discharge channel 62, is moved, in the direction perpendicular to the plane of FIG. 3, an adhesive joint similar to a weld seam is obtained overall, which is mechanically resilient.
  • the finished winding 60 is removed in a manner similar to that described with reference to FIG. 2 above.
  • FIG. 4 accomplishes both the take-up of the main length and the end section 42 of the knitted fabric, to which reference was made above with reference to FIGS. 1 a) -1f) and 1g) and 1h), respectively .
  • the winding mandrel 16 has a fastening flange 68 which is attached to a shaft flange 72 by means of screws 70.
  • the latter is integrally formed on a shaft 74 which is mounted in a housing 80 via bearings 76, 78.
  • the shaft 74 carries a bevel gear 82 which meshes with a smaller bevel gear 84.
  • the latter sits on the end of a vertical drive shaft 86, which is mounted in the housing 80 by means of bearings 88, 90 and carries a drive gear 92 at the lower end. This can be brought into engagement with the pinion of a drive motor, not shown in FIG. 4, which is provided at the winding station of the winding production machine shown overall in FIG. 9.
  • the end of the shaft 74 on the right in FIG. 4 cooperates with an electromagnetically actuated brake 96 via a wedge 94.
  • the pressure spring 40 sits on a rod 98, which is placed on a cup-shaped drive body 100 by means of a mounting plate 102 and screws 104 in an elongated hole in the circumferential direction.
  • the drive body 100 has a sleeve-shaped hub section 106 which is mounted on the shaft 74 with the interposition of a slide bearing bush 108.
  • a gear 110 is rotatably mounted, which meshes with a free-running larger diameter gear 112.
  • the latter is mounted on the housing 80 via a short fixed axis 114 and bearings 116, 118.
  • the gear wheel 112 meshes with a toothed rack 120, which is guided in the housing 80 to be displaceable in the horizontal direction and is provided with a locking groove 122 on its underside.
  • This works together with an elastically pre-tensioned locking ball 124 and thus precisely defines the position of the pressure spring 40 in which it is furthest inner section is substantially above the highest point of the finished roll.
  • the end of the rack 120 located on the right in FIG. 5 carries a coupling head 126 which can be brought into and out of engagement with a counter-coupling piece 128 by moving in the direction perpendicular to the plane of the drawing in FIG. 5, which is not one in FIG. 5 at the end of the piston rod Working cylinder shown is attached, which serves to rotate the pressure spring 40 about the axis of the winding mandrel 16.
  • a lower mounting flange 132 of the housing 80 is used.
  • Figures 6 and 7 show details of the transport arm 20 and the arrangement of gripping wires 36 on the arm end portion 26 on a larger scale.
  • the gripping wires 36 are arranged in two rows, which are 5 mm apart in a practical embodiment.
  • the distance between the gripping wires 36 within a row increases from top to bottom in FIG. 7, since more gripping wires are not required in proportion to the bandwidth for securely gripping wide knitted bands.
  • the gripping wires 36 each have a vertical fastening section 134 which is inserted into an associated bore 136 in the arm end section 26 with soft solder.
  • a gripping section 138 of the gripping wire 36 projecting beyond the underside of the arm end section 26 is angled at 30 ° to the underside of the arm end section 26.
  • the length of the gripping section 138 is 3.5 mm.
  • the main section 22 of the transport arm 20 has an upwardly angled rear end 140. This facilitates the relative movement between the transport arm 20 and knitted fabric 10 when the latter is pulled under the stationary transport arm or the transport arm 20 is adjacent to the winding mandrel 16 front position is moved over the knitted fabric 10 to the rear position adjacent to the cutter bar 14.
  • the main section 22 of the transport arm 20 also has a lateral raised fastening section 142 which is connected to the driven part of a controllable linear motor, as will be described in more detail later.
  • a drive carriage 144 is shown, to which the fastening section 142 of the transport arm 20 is attached.
  • the drive carriage 144 runs on a threaded spindle 146, which can be rotated in both directions of rotation by an electric motor 150 via a toothed belt 148.
  • the actual position of the drive carriage 144 is measured by a linear position transmitter (not shown in more detail), and the electric motor 150 is excited by a control circuit (also not shown in more detail) in such a way that the actual position corresponds to a desired position specified by a central controller.
  • the guide plate 12 and the cutter bar 14 actuated by a compressed air cylinder 152 sit on a subframe 154, which is adjustable in the conveying direction of the knitted fabric 10 by means of a manually operated threaded spindle 156.
  • Bearing eyes 158 for the threaded spindle 156 sit on a second subframe 160 which is pivotably attached to a main frame 164 of the machine via a pivot pin 162.
  • a further manually operated threaded spindle 166 which is mounted on the main frame 164 and whose end engages the second subframe 160, is used to adjust the inclination of the second subframe 160.
  • the inclination of the subframe 160 is adjusted so that the plane of movement of the transport arm 20 is essentially tangential to the outer surface of the winding mandrel 16 used in each case.
  • a storage unit designated overall by 168, which, when the knitted strip 10 is continuously removed from a supply roll 170, compensates for the intermittent and rapid strip movement during winding.
  • the removal of the knitted fabric 10 from the supply roll 170 at a continuous feed rate is provided by a spiked drive roller 172 which cooperates with a rubber counter-roller 174.
  • the temporary storage of knitted fabric in the storage unit 168 is provided by two dancer rolls 176, 178, which work in a known manner via a light barrier with a control for an electric motor (not shown) that rotates the drive roller 172.
  • a reserve supply roll 180 lies over a supply roll 170 that has just been unwound, and an automatic splicing station 182 upstream of the storage unit 168 automatically connects the beginning of the reserve supply roll to the knitted band end of the supply roll that has previously been unwound, in order to enable the machine to work continuously.
  • FIG. 9 In the right part of Figure 9 is a schematic Turntable 184 is drawn, which carries four winding units 130 at an angular distance of 90 °, as explained above with reference to FIGS. 5 and 6.
  • An electric motor 186 can also be seen in FIG. 9, the output pinion of which meshes with the drive gear 92 of a winding unit 130 in the winding station and can thus drive the winding mandrel 16.
  • a welding station 188 is shown schematically in FIG. 9, with which the two outermost layers of a knitted tape roll are firmly connected to one another by means of micro-welding spots, and also an ejection station 190.
  • An electronic scale 192 is arranged under the ejection station 190, onto which the finished rolls are stripped fall from a winding mandrel 16. The finished coils are then pushed down to the right or left in FIG. 9 by the scale 192, depending on whether their weight is within the prescribed weight range or outside this range.
  • FIG. 10 shows details of the welding station 182.
  • a station frame 194 is seated on a carriage 196 which can be adjusted in the vertical direction by means of a spindle 198.
  • the bearing 200 of the threaded spindle 198 is supported on the main frame 164 of the machine, and to guide the station frame 194, the slide 196 runs in a vertical guide 202, which is also connected to the main frame 164.
  • the station frame 194 carries five adjacent compressed air cylinders 204, the piston rods 206 of which each carry a micro-welding head, designated overall by 208.
  • the welding heads 208 each have a truncated cone-shaped electrode 210, which is firmly inserted into a sleeve part 212. The latter overlaps a head part 214 which is connected to the piston rod 206.
  • a spring 216 the electrode 210 is resiliently biased downwards in the drawing, a pin 218 provided in the head part 214 together with elongated holes 220 provided in the sleeve part 212 limiting the spring travel.
  • the thin support body 44 is shown in its fully extended working position, which engages under the outer winding layers.
  • the support body 44 is fastened by screws 222 to a carriage 224 which runs on guide rails 226 which are attached to the station frame 194.
  • the end of the piston rod 228 of a double-acting compressed air cylinder 230 is attached to the carriage 224 and serves to move the support body 44 between the working position shown in FIG. 10 and a rest position to the left in FIG. 10.
  • the micro welding heads 208 are moved one after the other against the support body 44, so that there is only a single path for the welding current, which leads over the respective welding point. In this way, load-bearing micro-welds can also be produced that have inherently poor electrical conductivity, e.g. due to oil residue on the knitted ribbon or the like.
  • FIG. 11 shows details of the ejection station 190.
  • a station frame designated overall by 232, carries an upper, vertical compressed air cylinder 234 which works on an angle lever 236 which is mounted on the station frame 232 via a pivot pin 238.
  • the driving end of the angle lever 236 engages with a drive pin 240 in an elongated hole 242, which is provided in an extension 244 of a stripper body, designated overall by 246.
  • the latter is on its sloping bottom studded with spikes that can be pressed into a finished knitted band wrap.
  • a circular trough 250 is provided below the spikes 248 on the wiper body 246.
  • the rounded end of the piston days 252 of a further compressed air cylinder 254 also acts on the wiper body 246.
  • the stripping body 246 in FIG. 11 can thus be moved to the right and left or pivoted about an axis perpendicular to the plane of the drawing in FIG.
  • the stripping body 246 can be moved with its spikes against a finished knitted tape winding, and when the entire mechanical system described above is then moved by pressurizing a further compressed air cylinder 256 in the direction perpendicular to the plane of the drawing in FIG used, the axis of which would also be conceivable in FIG. 11 perpendicular to the plane of the drawing.
  • an electric motor 258 is also provided in the ejection station 190 (cf. FIG. 9), the output pinion of which is in engagement with the drive gear 92 of a winding unit at this station.
  • this electric motor is rotated in the opposite direction of rotation as the electric motor of the winding station, so that the inclined end portions of the hook-shaped gripping wires 38 provided on the winding mandrel 16 are moved out of the inner surface of the winding.
  • FIG. 12 schematically shows the electronic scale 192 together with a roll 60 lying on its weighing pan.
  • the output signal of the scale 192 reaches the first input of a comparator 260, the second input of which is a signal assigned to the target weight of the roll 60 receives, which is specified for example by setting a potentiometer 262.
  • the error signal provided at the output of the comparator 260 is fed to a controllable monostable trigger circuit 264, the pulse width of which specifies the time period over which the electronic motor 186 provided in the winding station operates. In this way, a total weight of the roll is obtained, which is independent of fluctuations in width and changes in density of the knitted fabric.
  • a spring cushion base body 1 ' is shown, which is of circular cylindrical design and consists of a knitted fabric 2' made of steel wire and having stitches.
  • the knitted fabric 2 ' has an endless or tubular cross-section and is wound spirally, with the layers 3' to 6 'touching.
  • An end piece 7 'on the outer circumference 8' of the spring cushion base body 1 ' is connected to the adjacent layer 4' by welding.
  • the layers 3 'and 4' are connected to one another, the weld connection being represented by a plurality of spaced-apart welding points 9 '.
  • a device for producing the base body comprises a computer 11 'which is connected to the following devices: a roller device 12', a connecting device 13 'with a first welding device 14', a storage device 15 ', a measuring device 16' with a cutting device 17 ', a first winding device 18' , an electrode device 19 ', a second winding device 20', a second welding device 21 'and a weighing device 22'. It is also possible to link only a part of the above devices to the computer 11 '.
  • the roller device 12 ', the connecting device 13' with the welding device 14 ', the storage device 15' and the measuring device 16 'with the cutting device 17' of the device 10 ' are arranged on a conveyor belt 23' which is connected radially to a rotary table 24 'connects.
  • the rotary table 24 ' carries the first and second winding device 18', 20 ', the electrode device 19' and the second welding device 21 '.
  • the weighing device 22 ' is connected downstream of the rotary table 24', which comprises four stations 25 ', 26', 27 'and 28'.
  • the roller device 12 ' (FIG. 16) is formed by two superimposed rollers 29', 30 ', the tangential knitted fabric extensions 31', 32 'of which run adjacent to one another in the direction B-B of the conveyor belt 23'. Centers 33 ', 34' of the rollers 29 ', 30' lie on a common vertical plane C-C.
  • the connecting device 13 ' is provided with a sensor 35' which on the one hand has a rear end piece, e.g. 36 'of the knitted fabric 37', which is pulled off the roll 30 ', in the area of the welding device 14'; the roll 30 'is therefore fully unwound.
  • the sensor 35 ' causes a front end piece 38' of the knitted fabric 39 'of the roller 29' to be conveyed to the welding device 14 '.
  • the two end pieces 36 'and 38' are aligned overlapping and connected to one another by the welding device 14 ', which has a plurality of spot welding electrodes.
  • the storage device 15' is indicated, which is constructed in the manner of a dancer roll and has a first and a second motor 41 ', 42' of electrical design and deflection rolls 43 ', 44 and 45'.
  • the measuring device 16 ' which is seen behind the second motor 42' in the belt running direction D, has two measuring rollers 46 ', 47' attached to both sides of the knitted fabric 39 '. Between the measuring rollers 46 ', 47' and the first and the second winding device 18 ', 20', the cutting device 17 'is arranged, which takes effect as a function of the measuring device 16'.
  • the first winding device 18 ' (FIG. 18), which, like the second winding device 20', is attached to the rotary table 24 ', comprises a winding mandrel 48', which can be provided, for example, with hooks 49 'which act as a driver in the direction of winding of the knitted fabric E, but in FIG opposite direction, the knitted fabric can be designed releasing.
  • the second winding device 20 ' has a comb 50' for the knitted fabric 39 'which can be rotated about the winding mandrel 48' against the knitted winding direction E by means of a gear mechanism 51 '.
  • the electrode device 19 comprises an electrode 52' which is arranged transversely to the winding mandrel 48 'and can be actuated by means of a pneumatic actuator 53' (FIGS. 17 and 19); it can be inserted between two layers 4 ', 5' of the spring cushion base body.
  • the second welding device 22 ' (FIG. 19) comprises a plurality of spot welding electrodes 54', 55 ', 56', 57 ', 58' which are movable perpendicularly to the electrode 52 'and to the winding mandrel 48', and for low-inertia repositioning during the spot welding process interact with springs 59 '.
  • the weighing device 21 ' determines whether the finished spring cushion base body 1' lies within an allowable tolerance range.
  • the manufacturing process for every feather pillow body proceeds as follows: knitted fabric 37 'is continuously pulled off the roll 30'. If the sensor 35 'detects the rear end piece 36', it is fixed in the area of the first welding device 14 '. In addition, a front end 38 'of the knitted fabric 39' is conveyed to the welding device 14 '; both end pieces 36 'and 38' overlap. The end pieces 36 'and 38' are then connected to one another by the welding device 14 ', which essentially corresponds to the second welding device 21'. The overlapping end pieces 36 'and 38' are trimmed by the cutting device 17 'in such a way that only the knitted fabric 39' is conveyed to the first winding device 18 '.
  • the winding mandrel 48 'winds up the knitted fabric 39' until the measuring device 16 'receives a pulse from the computer 11', which on the one hand interrupts the winding process by the first winding device 18 'and on the other hand gives a pulse to the cutting device 17', the knitted fabric (39 ') to separate.
  • the second winding device with the comb 49 'acting counter to the knitting-out direction E causes the part 60' to be wound up.
  • the spring cushion base body has the final shape shown in Figure 1.
  • the spot welding electrodes 54', 55 ', 56', 57 ', 58' are brought into active connection with the electrode 52 'individually or independently of one another.
  • the finished spring cushion base body 1 ' is conveyed to the weighing unit 22'. It is determined whether its weight is within an allowable tolerance range. In the event of a deviation from this, the computer stops the production process and regulates itself via the measuring system until the weight of the respective spring cushion base body conforms to tolerance.

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  • Vibration Dampers (AREA)

Abstract

Un dispositif de fabrication automatique de rouleaux en un tissu d'acier à ressorts comprend une station de coupe (14), un mandrin d'enroulement (16) et un bras de transport (20) capable d'effectuer un mouvement de va-et-vient entre la station de coupe et le mandrin d'enroulement (16). Le bras de transport est pourvu sur sa face inférieure de fils métalliques (36) d'accrochage du tissu inclinés en avant.

Claims (24)

  1. Dispositif pour fabriquer des rouleaux de produits tricotés en acier à ressort, comprenant un poste de déroulement du produit tricoté (168 à 182), un poste de découpage (14) à fonctionnement intermittent et un mandrin d'enroulement (16) entraîné par un moteur (186), caractérisé par le fait que le mandrin d'enroulement (16) présente sur sa surface périphérique des moyens de préhension du produit tricoté (38), et qu'un bras transporteur (20) qui est muni de moyens de préhension du produit tricoté (36) peut être déplacé linéairement en va-et-vient entre le poste de découpage (14) et le mandrin d'enroulement (16).
  2. Dispositif selon la revendication 1, caractérisé par le fait que les moyens de préhension du produit tricoté (36, 38) sont constitués par des morceaux de fil à ressort.
  3. Dispositif selon la revendication 2, caractérisé par le fait que les extrémités des morceaux de fil à ressort (36, 38) qui coopèrent avec le produit tricoté (10) sont inclinées d'un angle de 30° environ par rapport au plan de déplacement.
  4. Dispositif selon la revendication 2 ou 3, caractérisé par le fait qu'une pluralité de morceaux de fil à ressort (36, 38) est disposée sur une ou plusieurs rangées transversales.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que le bras transporteur (20) comporte une partie de bras terminale (26), laquelle peut pivoter autour d'un axe qui est situé dans le plan de déplacement et qui est transversal par rapport à la direction du déplacement.
  6. Dispositif selon la revendication 5, caractérisé par le fait que la partie de bras terminale (26) est rappelée par un ressort (34) vers le plan principal du bras transporteur (20).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que le bras transporteur (20) est relié à la partie d'entraînement d'un servomoteur linéaire (144 à 150).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que le poste de découpage (14) et un guidage (144, 146) destiné au bras transporteur (20) sont disposés sur un châssis auxiliaire commun (160) qui peut pivoter autour d'une direction (162) perpendiculaire à la direction de déplacement du produit tricoté (10).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait qu'un dispositif de serrage (40) est associé au mandrin d'enroulement (16), et qu'il s'étend en cédant élastiquement sur la couche extérieure du rouleau de produit tricoté (60) qui est en train de prendre naissance.
  10. Dispositif selon la revendication 9, caractérisé par le fait que le dispositif de serrage (40) comporte une pluralité de doigts de serrage (48) qui se suivent à distance dans le sens axial.
  11. Dispositif selon la revendication 10, caractérisé par un poste de fixation de l'extrémité du produit tricoté (188) comportant au moins une tête de fixation (46 ; 208) qui est mobile entre les doigts de serrage (48).
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait qu'un poste de fixation de l'extrémité du produit tricoté (188) coopère avec un corps d'appui plat (44) qui peut être enroulé sous une ou plusieurs couches extérieures du rouleau (60).
  13. Dispositif selon la revendication 12, caractérisé par le fait qu'il est prévu un entraînement (230) qui est destiné à déplacer axialement le corps d'appui (44) pour l'amener dans le rouleau (60) et hors du rouleau, ainsi qu'un deuxième entraînement (110 à 128) qui est destiné à faire tourner le dispositif de serrage (40) autour de l'axe du mandrin d'enroulement (16).
  14. Dispositif selon l'une des revendications 11 à 13, caractérisé par un servofrein (96) qui est associé au mandrin d'enroulement (16).
  15. Dispositif selon l'une des revendications 11 à 14, caractérisé par le fait que le poste de fixation (188) peut être déplacé (196, 198) perpendiculairement à l'axe du mandrin d'enroulement.
  16. Dispositif selon l'une des revendications 11 à 15, caractérisé par le fait que les têtes de fixation sont des têtes de microsoudage (208).
  17. Dispositif selon la revendication 16, caractérisé par le fait que les têtes de microsoudage (208) comportent des électrodes (210) qui sont rappelées élastiquement vers une position où elles sont sorties.
  18. Dispositif selon la revendication 16 ou 17, caractérisé par le fait que les têtes de microsoudage (208) sont déplacées individuellement les unes après les autres vers la surface extérieure du rouleau (60) grâce à des entraînements asservis (204) qui leur sont associés.
  19. Dispositif selon l'une des revendications 11 à 15, caractérisé par le fait que les têtes de fixation sont des têtes d'agrafage ou d'aiguilletage (50, 52).
  20. Dispositif selon l'une des revendications 11 à 15, caractérisé par le fait que les têtes de fixation (46) comportent des canaux de distribution de colle (62).
  21. Dispositif selon l'une des revendications 1 à 20, caractérisé par un poste d'éjection (190) qui comporte un corps d'extraction (246) pourvu de moyens de préhension du produit tricoté (248) et un dispositif d'entraînement (234, 254, 256) destiné à amener le corps d'extraction (246) contre la surface extérieure d'un rouleau fini (60) et à déplacer ensuite le corps d'extraction (246) dans le sens axial.
  22. Dispositif selon la revendication 21, caractérisé par le fait que le poste d'éjection (190) comporte un autre entraînement (258) au moyen duquel le mandrin d'enroulement (16) est entraîné dans le sens de rotation qui est opposé à l'enroulement.
  23. Dispositif selon la revendication 21 ou 22, caractérisé par le fait que le poste d'éjection (190) comporte une balance (192) qui est disposée sous le trajet du corps d'extraction (246), sur laquelle un rouleau (60) tombe après qu'il a été retiré du mandrin d'enroulement (16) et qui est reliée à un comparateur (260), celui-ci fournissant un signal d'erreur qui est associé à l'écart entre le poids réel d'un rouleau et son poids de consigne, et par le fait qu'au moyen de ce signal, on agit sur la longueur d'une portion de bande tricotée qui constitue un rouleau (60).
  24. Dispositif selon l'une des revendications 1 à 23, caractérisé par le fait que le poste de découpage (14) peut être déplacé (156) dans la direction de déplacement de la bande tricotée (10).
EP91914185A 1990-02-12 1991-02-05 Dispositif de fabrication de rouleaux en un tissu d'acier a ressorts Expired - Lifetime EP0515581B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9191914185T ATE105217T1 (de) 1990-02-12 1991-02-05 Vorrichtung zum herstellen von wickeln aus federstahlgewirk.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4004187 1990-02-12
DE4004187A DE4004187C2 (de) 1990-02-12 1990-02-12 Stoßdämpfer-Grundkörper, sowie Verfahren und Vorrichtung zur Herstellung desselben
PCT/EP1991/000218 WO1991012100A1 (fr) 1990-02-12 1991-02-05 Dispositif de fabrication de rouleaux en un tissu d'acier a ressorts

Publications (2)

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EP0515581A1 EP0515581A1 (fr) 1992-12-02
EP0515581B1 true EP0515581B1 (fr) 1994-05-04

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EP91914185A Expired - Lifetime EP0515581B1 (fr) 1990-02-12 1991-02-05 Dispositif de fabrication de rouleaux en un tissu d'acier a ressorts

Country Status (5)

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US (1) US5319833A (fr)
EP (1) EP0515581B1 (fr)
CA (1) CA2075800C (fr)
DE (2) DE4004187C2 (fr)
WO (1) WO1991012100A1 (fr)

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DE4417815C1 (de) * 1994-05-20 1995-10-12 Inventa Ag Filter für Polymerlösungen und Polymerschmelzen
US6607841B2 (en) * 2001-10-16 2003-08-19 Albert Chow Silicon steel sheet
CN102862055A (zh) * 2012-09-28 2013-01-09 信源电子制品(昆山)有限公司 料带焊接机
CN104647039B (zh) * 2015-01-14 2017-08-08 佛山市固高自动化技术有限公司 一种自动卷板焊接设备
CN108942243B (zh) * 2017-05-27 2024-08-27 太仓市智鑫自动化设备有限公司 一种高速焊接装置
CN107717438B (zh) * 2017-09-27 2024-08-06 鸿日达科技股份有限公司 一种手机卡座连接器的自动组装生产线和工艺方法
US20220204296A1 (en) * 2020-12-28 2022-06-30 Papeltec Overseas, Inc. Method and apparatus for separating and spooling a paper web
CN114952311B (zh) * 2022-07-08 2024-06-21 上海磐云科技有限公司 一种料带式组装焊接裁切一体机
CN116830891B (zh) * 2023-06-09 2024-01-26 九方泰禾国际重工(青岛)股份有限公司 一种玉米摘穗辊及其加工装置

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FR1064768A (fr) * 1952-08-04 1954-05-18 Robinson Aviat Perfectionnements aux ensembles amortissant les vibrations
DE1041902B (de) * 1956-05-17 1958-10-30 Wafios Maschinen Wagner Vorrichtung zum haspelfreien Aufwickeln von Drahtgeflecht mit viereckigen Maschen
CH386801A (de) * 1961-07-28 1965-01-15 Schlatter Ag Maschine zum Aufwickeln von Drahtgittern und Drahtnetzen
CH434098A (de) * 1964-10-13 1967-04-15 Schlatter Ag Verfahren zum Aufwickeln von Drahtgitter oder Drahtnetz und zum Umschnüren des aufgewikkelten Drahtgitters bzw. Drahtnetzes, Einrichtung zur Durchführung des Verfahrens und nach dem Verfahren aufgewickeltes und umschnürtes Drahtgitter bzw. Drahtnetz
GB1109582A (en) * 1965-09-15 1968-04-10 Barnards Ltd A machine for winding up chain link fencing
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US3812640A (en) * 1972-10-05 1974-05-28 Coatings Eng Corp Method and apparatus for packaging wire mesh material
DE2346554C3 (de) * 1973-09-15 1979-04-05 Friedrich Kocks Gmbh & Co, 4000 Duesseldorf Vorrichtung zum Wickeln von langem, stabförmlgem Gut, insbesondere von Rohren
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DE3710143A1 (de) * 1987-03-31 1988-10-13 Jagenberg Ag Bahneinzugsvorrichtung an rollmaschinen

Also Published As

Publication number Publication date
DE4004187A1 (de) 1991-08-14
EP0515581A1 (fr) 1992-12-02
WO1991012100A1 (fr) 1991-08-22
DE4004187C2 (de) 1999-03-11
US5319833A (en) 1994-06-14
DE59101578D1 (de) 1994-06-09
CA2075800A1 (fr) 1991-08-13
CA2075800C (fr) 2000-11-28

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