WO2002092495A1 - Procede et dispositif de transport de ressorts ensaches vers un dispositif de montage de carcasse de ressorts - Google Patents

Procede et dispositif de transport de ressorts ensaches vers un dispositif de montage de carcasse de ressorts Download PDF

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Publication number
WO2002092495A1
WO2002092495A1 PCT/CH2002/000231 CH0200231W WO02092495A1 WO 2002092495 A1 WO2002092495 A1 WO 2002092495A1 CH 0200231 W CH0200231 W CH 0200231W WO 02092495 A1 WO02092495 A1 WO 02092495A1
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WO
WIPO (PCT)
Prior art keywords
spring
area
spring coil
springs
feed
Prior art date
Application number
PCT/CH2002/000231
Other languages
German (de)
English (en)
Inventor
Marco Frangi
Original Assignee
Spühl AG St. Gallen
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spühl AG St. Gallen filed Critical Spühl AG St. Gallen
Priority to EP02717928A priority Critical patent/EP1387814A1/fr
Publication of WO2002092495A1 publication Critical patent/WO2002092495A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G9/00—Placing upholstery springs in pockets; Fitting springs in upholstery

Definitions

  • the invention relates to a method for transporting pocketed springs according to the preamble of patent claim 1.
  • the subject matter is also a device for transporting pocketed springs according to the preamble of patent claim 8.
  • Spring core inserts usually comprise a certain number of spring rows arranged next to one another and connected to one another from a plurality of springs arranged in line and connected to one another.
  • the rows of springs are welded into a tube made of thermoplastic material in separate pockets.
  • the endlessly produced pockets filled with springs are divided into predetermined length sections of, for example, thirty springs in order to be able to produce the corresponding spring core therefrom.
  • a known device (WO 96/27553) on Three spring coiling machines arranged side by side, each with a downstream device for pocketing the springs produced on the spring coiling machine, introduced the endlessly produced pocket spring coils in three tracks into a magazine arranged in front of an automatic spring assembly machine.
  • This known device has the advantage that the delivery of pocket spring coils from three spring coiling machines enables continuous work on the assembly machine, even if a temporary interruption occurs in one of the three spring coiling machines. It has turned out to be a disadvantage, however, that spring snake sections of unequal length due to differences in tolerance do not exist in this known device can be compensated. Such length deviations, if they are additive, can also lead to length deviations in the spring cores produced therefrom, which can significantly exceed the specified target values.
  • the present invention is based on the object of providing a method and a device for transporting spring coils, which enables spring coils to be fed to a spring mounting device in a precise manner and with a certain amount of variable length with little effort.
  • Another object of the invention is to create the possibility of changing the hardness of the spring core as a whole or in certain zones by changing the distances between the springs and / or spring lines with springs of different diameters. This object is achieved by a method with the features of claim 1 and a device with the features of claim 8.
  • endlessly produced spring serpents even those that have been temporarily stored, can be transported in the correct position and presented to the assembly device in an exactly predetermined length.
  • the changeover of the device for spring snakes with a different spring dimension or different length of the spring snake sections can be carried out partly via the control of the machine and / or with a few simple steps.
  • zones of the spring core can be made softer or harder than adjacent zones of the spring core.
  • FIG. 2 the front end of the spring snake is gripped by the feed conveyor belt
  • FIG. 3 the spring snake is drawn in in the feed conveyor belt up to the subsequent transport or transfer area C,
  • Figure 4 shows the required number of springs, i.e. a desired spring snake section length is counted and is separated from the endless spring snake by the cutting device
  • FIG. 5 the separated spring snake section has left the feed area B and is led via transfer / transport area C to the insertion area D,
  • FIG. 6 the spring snake section has reached the insertion area D
  • FIG. 7 the insertion area D is pivoted through 90 °, the pocket spring axes are now ready to be inserted into the assembly device; the following spring snake section has already arrived in the transfer / transport area C,
  • Figure 8 is a plan view of the device
  • FIG. 9 shows a pull-in device which can be adapted to the diameter of the springs.
  • the device according to the invention is shown in Divided sections. These are sections A to D, section A representing the insertion area, section B the feed area, section C the transfer or transport area and section D the insertion area.
  • the insertion area A comprises a slide guide 1, on which the front end of an endless spring coil 3, which is introduced into the device, is guided.
  • a hold-down device 5 is mounted at a distance from the front end 2 of the slide guide 1, which is preferably horizontal and runs in a straight line, for example an elongated rail with an insertion section 7 which is expediently bent upward on the inlet side.
  • the hold-down device 5 serves to hold the spring coil 3 to guide with the springs 9 inserted into it on the sliding guide 1.
  • the hold-down device 5 can be adjusted and adjusted in the vertical direction by suitable means, not shown, so that its position can be adapted to the diameter of the springs 9 that are being processed.
  • a first sensor 11 is arranged above the hold-down device 5 or at another point, by means of which the number of springs 9 pocketed in the spring coil 3, which are guided past the sensor 11, can be counted.
  • the recooler 13 is pivotable about a pivot axis S and resiliently mounted, so that its front end 13 'is partially insertable between two adjacent springs 9 in the spring coil 3 and can be removed therefrom.
  • a device 15 for separating and welding the separation points of the endless coil spring 3 into individual spring coil sections 3 'of a predetermined length L or a predetermined number of springs 9 is arranged so as to be vertically displaceable.
  • the first sensor 11 is inserted between the retainer 13 and the device 15 for welding and separating the spring coil 3. This arrangement of the first sensor 11 means that differences in length of the spring snake sections 3 'cannot influence the counting device.
  • pliers 19 are mounted as a retractable element which is displaceable in the transport direction T.
  • the drive means 17 for moving the pliers 19 are only shown schematically for the sake of clarity.
  • the drive means 17 can be operated pneumatically or electrically.
  • the feed area B comprises two conveyor belts 21 ′ and 21 ′′, which together form the feed device 21.
  • the overhead conveyor belt 21 ′′ can be pivoted about the axis X of the deflection roller 23 located at the front in the direction of the arrow P by an invisible drive.
  • the swiveling movement enables a temporary enlargement the inlet-side distance of the two bands 21 'and 21 "when inserting the front end of the spring coil 3 with the pliers 19th
  • the distance between the axis X of the front deflection roller 23 with respect to the axis of rotation Z of the front deflection roller 24 of the conveyor belt 21 can also be set.
  • the adjustment of the distance between the strands of the conveyor belts 21 ′, 21 ′′ is preferably carried out with the aid of a servo drive 26 and enables spring coils 3 with springs 9 of different diameters to be processed without long conversion work.
  • the device can only be adapted to different spring diameters in sections A. and B.
  • the springs 9 are held axially on their end rings in the remaining sections C and D.
  • spring coils 3 with springs 9 with a smaller diameter and consequently also a larger number of springs 3 per unit length of the spring coil 3 results in a spring core Increased hardness If springs 9 with a larger diameter are used, the number of springs 9 per unit length and thus also the hardness is reduced accordingly.
  • cam-shaped transport rollers, or camshafts 25 for short, which are arranged about axes of rotation perpendicular to the image plane is drivable.
  • the distance between the axes of rotation of the two camshafts 25 is adjustable and always larger than the diameter of the springs 9 and the distance between the two vertices of the cams on the camshafts 25 is normally smaller than the diameter of the processed springs 9. This enables the vertices of the cams to engage between two successive springs 9 in the spring coil 3.
  • Positioning and auxiliary transport rollers or belts 27 arranged in pairs can lie essentially in the same plane as the camshafts 25.
  • Rubber beads for example in O-rings inserted into grooves, are preferably attached parallel to one another on their peripheries, which effect an essentially slip-free advance of the spring coil sections 3 'guided between the two positioning and auxiliary transport rollers or belts 27.
  • the positioning and transport rollers 27 are driven by contact wheels or rollers 31 (indicated by broken lines) between the positioning and auxiliary transport rollers 27 and the two conveyor belts 29 'and 29 "of a conveying device 29.
  • the insertion area D comprises two circumferential insertion tapes 35 'and 35 ", which are arranged analogously to those in the transport area C.
  • the two insertion tapes So and 35" are pivotally mounted on a swivel support 41.
  • the axis Y on the swivel support 41 is at right angles to the direction of conveyance of the insertion belts 35 ', 35 ".
  • Installation device 45 inserted and connected to the spring snake sections 2 'already present there.
  • the connection can be made by laterally gluing the spring snake sections 3 'or with the aid of nonwovens resting on the end rings on the end rings
  • the following is the method of transporting the initially endless spring coil into the spring core assembly 45 and adjusting the length L of the Spring snake sections 3 'explained.
  • the front end of a spring coil 3 is inserted, it is inserted between the sliding guide 1 and the hold-down device 5 until the retainer 13 engages between the front and second front springs 9 (FIG. 1).
  • This step is usually done manually; if desired, it can also be automated. It is only necessary if a new spring coil is fed into the system.
  • the pliers 19 are moved in the direction of the hold-down device 5.
  • the pliers 19 previously grips at least the two springs 9 lying in the front in the spring coil 3 at their end rings and pushes or pulls them in the direction of the arrow Z between the two bands 21 ′′ and 21 ′ of the pull-in device 21.
  • the first springs 9 between the strands of the two feed belts 21 'and 21 lie, the end 22, which was previously slightly lifted to facilitate pulling in in the direction of arrow P, pivots downward, so that the two runs essentially parallel.
  • the pliers 19 open as soon as the spring coil 3 has been gripped by the feed belts 21 and 21 ".
  • the spring coil 3 With the feed belts 21 'and 21", the spring coil 3 is now transported through the entire feed area B into the transport area C.
  • the front end of the spring coil 3 enters the transport area C can be pushed by the cams of the camshaft 25 with each rotation of the shaft, the respectively arriving spring 9 between the two conveyor belts 29 'and 29 "of the transport device 29.
  • the spring coil 3 is widened by the two positioning and auxiliary transport rollers 27 lying in the same vertical plane
  • the desired number n of springs 9, which is to be contained in a spring snake section 3 ', is counted with the first sensor 11.
  • the spring snake section 3 then arrives from there into the Insertion area D. After passing through the camshaft pair 25 and the positioning and auxiliary transport rollers or belts 27, if there are any, the mutual spacings of the springs 9 in the spring coil sections 2 'are balanced, that is to say they are all at an equal distance from one another on.
  • the front end of the endless spring snake 3 as described with reference to FIGS. 1 and 2, is inserted into the feed area B by the pliers 19.
  • the insertion area D or the insertion straps 35 ', 35 "rotating around it takes place about the axis Y.
  • the springs 9, which are now clamped with vertical axes between the two insertion straps 35' and 35" can be moved by a translational movement an insertion device can now be transferred to the assembly device 45.
  • the spring coil sections 2 ' can be inserted into the spring mounting device 45 in an exactly aligned manner. If the spring snake sections 2 'are laterally displaced by a spring radius, the density of the Springs 9 per unit area of a spring core can be enlarged (no illustration).
  • the influencing of the distances between the individual springs 9 within the spring coil sections 3 'and consequently the total length of the individual spring coil sections 3' can be influenced by different speeds of the subsequent conveyor belts 29 ', 29 ";35',35” in the areas C and D of the plant can be reached.
  • the spring snake 3 is drawn from the insertion area A into the feed area B by the conveyor belts 21 'and 21 ", the spring snake 3 is initially stretched moderately. The stretching is supported by the retainer 13, which from above onto the springs 9 pocketed in the spring snake 3
  • the spring coil 3, with the springs 9 now arranged at regular intervals, is guided by the conveyor belts 21 and 21 "through the feed area B into the transfer area C.
  • the front and rear ends of the spring coil 3 are detected by a second sensor 51 arranged there, and the actual length of the spring coil section 2 ′ is determined together with the measurement data obtained.
  • the spring coil 3 is guided or drawn in up to the second sensor 51, the length of the first spring coil section 2 ′ is checked manually and as the reference length R saved.
  • the reference length R is used to continuously record extraordinary deviations during the working process of the system and to stop the machine. Extraordinary deviations occur, for example, if no spring 9 is inserted in a pocket or if the seam between two springs 9 is missing.
  • a control makes a comparison of the measured actual length with the desired length for each spring-snake section 3, which must be present in the insertion area D before being inserted into the assembly device 45. If the ACTUAL length is too large, a reduction in the speed v D of the conveyor belts 35 ', 35 "in the transfer area D results in a corresponding compression of the spring coil section 3' entering this area D. This spring coil section 3 then points the desired SHOULD length in the insertion area D. Similarly, by increasing the speed v D, the length of the spring coil section 3 'can be increased if this should initially be too short.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)

Abstract

Le présent dispositif comporte quatre zones de transport (A à D), à travers lesquelles est acheminé un serpentin (3) de ressorts, initialement délivré en continu puis séparé en sections (3') de serpentin d'une longueur (L). Les ressorts (9) contenus dans ces sections (3') de serpentin peuvent être alignés par rapport à leur écartement. L'écartement de chaque ressort (9) ou la longueur (L) du serpentin (3) de ressorts peut être modifié par compression ou par étirage.
PCT/CH2002/000231 2001-05-16 2002-04-25 Procede et dispositif de transport de ressorts ensaches vers un dispositif de montage de carcasse de ressorts WO2002092495A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02717928A EP1387814A1 (fr) 2001-05-16 2002-04-25 Procede et dispositif de transport de ressorts ensaches vers un dispositif de montage de carcasse de ressorts

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH914/01 2001-05-16
CH9142001 2001-05-16
CH2011/01 2001-11-02
CH20112001 2001-11-02

Publications (1)

Publication Number Publication Date
WO2002092495A1 true WO2002092495A1 (fr) 2002-11-21

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ID=25738806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2002/000231 WO2002092495A1 (fr) 2001-05-16 2002-04-25 Procede et dispositif de transport de ressorts ensaches vers un dispositif de montage de carcasse de ressorts

Country Status (2)

Country Link
EP (1) EP1387814A1 (fr)
WO (1) WO2002092495A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524895A1 (fr) 2011-05-20 2012-11-21 Spühl AG Dispositif et procédé destinés au transport d'une serie de ressorts
CN105220445A (zh) * 2015-10-19 2016-01-06 安吉县龙威家具有限责任公司 一种袋装弹簧装袋封切结构
CN105292582A (zh) * 2015-10-19 2016-02-03 绍兴市华建床垫机械有限公司 一种用于传输袋装弹簧串的装置
EP3415463A1 (fr) * 2017-06-15 2018-12-19 AGRO Holding GmbH Ensemble de parties d'un serpentin de ressorts pour la fabrication d'un noyau à ressorts

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624545A1 (fr) * 1993-05-14 1994-11-17 Toledo Fjederindlaeg A/S Procédé de fabrication d'un ressort inséré
WO1996027553A1 (fr) 1995-03-05 1996-09-12 New Technology I Lidköping Ab Appareil pour la fabrication de constructions a ressorts

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624545A1 (fr) * 1993-05-14 1994-11-17 Toledo Fjederindlaeg A/S Procédé de fabrication d'un ressort inséré
WO1996027553A1 (fr) 1995-03-05 1996-09-12 New Technology I Lidköping Ab Appareil pour la fabrication de constructions a ressorts

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2524895A1 (fr) 2011-05-20 2012-11-21 Spühl AG Dispositif et procédé destinés au transport d'une serie de ressorts
WO2012159717A1 (fr) 2011-05-20 2012-11-29 Spühl Ag Dispositif et procédé pour transporter une queue de ressort
CN103502137A (zh) * 2011-05-20 2014-01-08 施普尔公司 用于传输弹簧串的装置和方法
JP2014512317A (ja) * 2011-05-20 2014-05-22 スピュール アーゲー Ｓ字形スプリングを搬送する装置および方法
CN103502137B (zh) * 2011-05-20 2015-04-08 施普尔公司 用于传输弹簧串的装置和方法
US9327933B2 (en) 2011-05-20 2016-05-03 Spuhl Ag Device and method for conveying a spring string
CN105220445A (zh) * 2015-10-19 2016-01-06 安吉县龙威家具有限责任公司 一种袋装弹簧装袋封切结构
CN105292582A (zh) * 2015-10-19 2016-02-03 绍兴市华建床垫机械有限公司 一种用于传输袋装弹簧串的装置
EP3415463A1 (fr) * 2017-06-15 2018-12-19 AGRO Holding GmbH Ensemble de parties d'un serpentin de ressorts pour la fabrication d'un noyau à ressorts

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Publication number Publication date
EP1387814A1 (fr) 2004-02-11

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