EP0707906A1 - Machine automatique pour la fabrication de joints - Google Patents

Machine automatique pour la fabrication de joints Download PDF

Info

Publication number
EP0707906A1
EP0707906A1 EP94203075A EP94203075A EP0707906A1 EP 0707906 A1 EP0707906 A1 EP 0707906A1 EP 94203075 A EP94203075 A EP 94203075A EP 94203075 A EP94203075 A EP 94203075A EP 0707906 A1 EP0707906 A1 EP 0707906A1
Authority
EP
European Patent Office
Prior art keywords
unit
tape
feed
tapes
roller
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.)
Granted
Application number
EP94203075A
Other languages
German (de)
English (en)
Other versions
EP0707906B1 (fr
Inventor
Gian Piero Barozzi
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.)
Aisa SpA
Original Assignee
Aisa SpA
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 Aisa SpA filed Critical Aisa SpA
Priority to EP19940203075 priority Critical patent/EP0707906B1/fr
Priority to DE69426628T priority patent/DE69426628D1/de
Publication of EP0707906A1 publication Critical patent/EP0707906A1/fr
Application granted granted Critical
Publication of EP0707906B1 publication Critical patent/EP0707906B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/16—Making other particular articles rings, e.g. barrel hoops
    • B21D53/18—Making other particular articles rings, e.g. barrel hoops of hollow or C-shaped cross-section, e.g. for curtains, for eyelets

Definitions

  • the object of this invention is an automatic machine for the production of front-sealing gaskets obtained by simultaneous spiral winding on a centring ring of a backing tape of high mechanical strength and a tape made of material of high insulating characteristics superimposed on one another.
  • the present invention provides an automatic machine for the production of gaskets obtained by spiral winding of tapes of different physical and mechanical characteristics on a supporting and centring ring, comprising means for feeding such supporting rings to a rotary mandrel, a unit exerting radial pressure on such rings, a unit for welding one of such tapes to the ring, a unit for feeding a tape of high mechanical characteristics, a unit for feeding a second tape of sealing material and a unit for controlling and synchronizing the feed to the mandrel of such backing and sealing tapes interposed between the respective feed units, there being furthermore provided means for the relative movement of the sealing tape feed unit with respect to the synchronizing unit in a direction transversal to the direction of feed of the said tapes to the mandrel, as well as means for moving the synchronizing unit in a direction normal to the other two directions for the alignment of the direction of feed of the tapes at a tangent to the preset circumference of the gasket and means for maintaining such alignment as the outside
  • the machine according to the invention is essentially comprised of a control and programming part 2 capable of controlling the rotation of a mandrel 3 the axis of rotation of which constitutes the fixed reference for all the moving parts of machine 1, which are in turn controlled according to programmed working sequences.
  • Such moving and operating parts are substantially comprised of a feeder 10 for inner rings 11 which are applied to mandrel 3 in order to support the gasket both during the formation of the latter and on completion of the gasket; a unit 20 exerting radial pressure on such rings 11; a welding unit 30 set against such pressure unit 20; a unit 40 for feeding a steel tape 41; a unit 50 for feeding tapes 51 made of insulating material and a unit 70 for control and relative positioning with respect to the mandrel, as well as for the synchronization and cutting of backing tape 41 and insulating tape 51, interposed between respective feed units 40 and 50.
  • Unit 10 for the feeding of inner rings 11 is substantially comprised of a reservoir 12, moving on horizontal plane 12a, and an articulated arm 13 capable of taking a ring 11 from the reservoir and positioning it coaxially to mandrel 3, which is equipped with grippers 3a moving radially under control, capable of making ring 11 integral with mandrel 3 which may thereby cause to rotate ring 11 for the formation of the gasket.
  • Above mandrel 3 acts a pressure unit 20 consisting of an idle roller 21 operated in translation by a piston 22 which brings about its descent into contact with supporting ring 11 thereby generating pressure on the said ring and therefore on the gasket during its formation.
  • a welding unit 30 - which is self-evident and therefore only shown schematically in the figures and not described in detail - which may be controlled in translation until it placed in contact with the gasket for the weld to be applied between inner ring 11 and the profiled steel at the start of formation of the gasket, and on outer ring 5b of the gasket 5 for the stable locking of the spiral on completion of formation of the gasket.
  • Unit 40 for the feeding of steel backing tape 41 substantially consists of a tensioning and regulating device comprising an idle roller 42 for the return of tape 41, a swivel arm 43 and an idle return roller 44.
  • Unit 50 for the feeding of insulating tape 51 is substantially comprised of a supporting arm 52 carrying a flange 52a, transversally to which is located a pin 53 on which may rotate a multiplicity of reels 51a of insulating tape 51 from which is unwound the said tape in order to feed mandrel 3.
  • Unit 50 for the feeding of insulating tape 51 may be made to rotate around a pin 55 in order to obtain the overturning of arm 52 so as to provide access both to the said feed unit and to underlying synchronizing unit 70.
  • arm 52 is centred by means of two pins 56a and 57a actuated by respective cylinders 56b, 57b, which pins cooperate with corresponding holes 56c and slots 57c for the centring in a direction parallel to feed direction Y-Y of tape 51 and for the movement in direction Z-Z transversal thereto of the arm with respect to the synchronizing unit (fig. 1).
  • Locking in the working position is performed by means of a hook 58 rotating around a pin 58a against the opposing action of a spring 58b.
  • arm 52 may be moved via a slide 57d in a transverse sense Z-Z with respect to direction Y-Y of feed of tape 51 in order to feed to gasket 5 the insulating tape of a particular reel from the number located on transverse pin 53, thus making possible the preselection of tapes 51 of different materials in relation to the characteristics required for the specific gasket being produced.
  • a pulley 59 to control the continuity of movement of insulating tape 51 during the formation of the gasket, on which acts in a radial sense a counteracting roller 60 out of a number of rollers pivoted to a fixed shaft supported by shoulders 52.
  • Such pulley 59 provided with its own front surface of slots 59a, is operated by a lever 59b integral therewith, pivoted at 59c and actuated by counteracting roller 60 via spring 59d.
  • a cylinder 59e provides via hook 59f for wheel 59 to be moved away from roller 60 during the change of reel 51a of insulating tape 51.
  • a sensor 59g is provided to indicate the stoppage of movement of the pulley in the event of breakage of insulating tape 51 or unavailability thereof due to depletion of the reel. This is made possible by the fact that, during rotation, pulley 59 presents to sensor 59g slots 59a alternating with sections of solid area, such alternation bringing about the emission of an intermittent signal by the movement-indicating sensor, while the continuous presence of a void or solid area would bring about a continuous signal corresponding to lack of movement of the pulley.
  • Longitudinal spring 64 secured to a support block 63, is fork-shaped so that the two separate legs act on pin 65a supporting a roller 65.
  • Such pin 65a is operated in translation by a roller 71 controlling the feed of tape 51.
  • Roller 65 acts via spring 64 to oppose roller 71 in the phase of feeding of insulating tape 51.
  • Synchronizing unit 70 interposed between the two feed units 40 and 50 comprises a first roller 71 controlling the feed of tape 51, on which it acts directly when pushed into the operating position by a connecting rod 71a pivoted to the centre of roller 73 and actuated by a cylinder 71b the rod of which brings about, in the retracted position, the movement of roller 71 away from tape 51 and, in the extended position, the movement of roller 71 toward tape 51.
  • Roller 71 is made to rotate by indented wheel 72 driven by a belt 72a attached to the hub of roller 73, which constitutes the male drawing roller of tape 41 and cooperates with a second roller 74 constituting the female drawing roller.
  • tape 41 may assume the arrangement shown in figures 4a, 4b, 4c, suitably designed to ensure efficient sealing of the gasket.
  • lower drawing roller 74 may be positioned by means of an eccentric device 75.
  • both tapes 41 and 51 may be fed to respective guide channels 41b and 51b, the mandrel end of which is comprised of a substantially pointed component 81 traversed by two channels 41b and 51b and capable of rotating around a fixed pin 82 to carry common outlet 81a of the two superimposed tapes 41 and 51 in a direction tangential to ring 11 on which they are to be spirally wound.
  • a spring 83 By means of such rotation against the return action of a spring 83 it is possible for the direction of exit of the tapes arriving from the feed units to be maintained at all times tangential to gasket 5 which, during its formation, continuously increases its outside diameter and correspondingly shifts the line of tangency.
  • synchronizing assembly In the synchronizing assembly are also provided components 76 and 77 for the cutting of tapes 41 and 51, respectively operated by relevant pneumatic or like actuators 76a and 77a.
  • Synchronizing unit 70 is also provided with a device 90 (figs. 2 and 5) for regulating the position of the entire unit 70 in a vertical sense with respect to the axis of rotation of mandrel 3.
  • such device is substantially comprised of a screw 91 capable of being rotated via suitable means 91a made integral at its upper free end and cooperating with nut 92 integral with plate 93 of unit 70.
  • arm 13 takes from reservoir 12 a ring 11 and positions it on grippers 3a of mandrel 3 for locking and rotation.
  • Tape 41 is fed in a preset length capable of moving the leading edge of backing tape 41 from the cutter unit to the point of contact with ring 11.
  • Welding unit 30 is therefore moved upward until it comes into contact with backing tape 41 against ring 11 and initiates the operation of welding between the two parts (fig. 4b).
  • the mandrel restarts and winds the insulating tape 51 remaining in guide 51b together with backing tape 41. After a present number of turns in which only backing tape 41 is wound, the mandrel comes to a halt, welding unit 30 is moved upward until it contacts tape 41 wound on the gasket and cutting device 77 is actuated. Lastly, the mandrel is caused to rotate and unit 30 carries out welding of the end of backing tape 41, thus completing the gasket which in this way is perfectly matched both to the inside diameter and to the outside diameter and is capable of maintaining such diametrical dimensions.
  • Mandrel 3 then comes to a halt, units 20 and 30 return to their original positions and grippers 3a release the inner ring from the gasket, which may then be unloaded by an appendage of arm 13 and the machine then set for a further cycle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gasket Seals (AREA)
EP19940203075 1994-10-22 1994-10-22 Machine automatique pour la fabrication de joints Expired - Lifetime EP0707906B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19940203075 EP0707906B1 (fr) 1994-10-22 1994-10-22 Machine automatique pour la fabrication de joints
DE69426628T DE69426628D1 (de) 1994-10-22 1994-10-22 Automatische Vorrichtung zum Herstellen von Dichtungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19940203075 EP0707906B1 (fr) 1994-10-22 1994-10-22 Machine automatique pour la fabrication de joints

Publications (2)

Publication Number Publication Date
EP0707906A1 true EP0707906A1 (fr) 1996-04-24
EP0707906B1 EP0707906B1 (fr) 2001-01-24

Family

ID=8217303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940203075 Expired - Lifetime EP0707906B1 (fr) 1994-10-22 1994-10-22 Machine automatique pour la fabrication de joints

Country Status (2)

Country Link
EP (1) EP0707906B1 (fr)
DE (1) DE69426628D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943848A3 (fr) * 1998-03-17 2000-07-05 Nippon Pillar Packing Co. Ltd. Procédé de fabrication d'une garniture d'étanchéité spiralée et appareillage pour la production de celle-ci
ITMI20111497A1 (it) * 2011-08-05 2013-02-06 Gsket S R L Apparecchiatura di saldatura di nastri continui avvolti su un anello di supporto.
IT201600095770A1 (it) * 2016-09-23 2018-03-23 Gsket S R L Macchina per la produzione di guarnizioni spiralizzate
CN110203738A (zh) * 2019-05-27 2019-09-06 慈溪市宝翔机械有限公司 一种石墨上料机构及一种缠绕垫片自动缠绕机
WO2019234577A1 (fr) * 2018-06-04 2019-12-12 GSKET S.r.l. Appareil compact pour souder des bandes enroulées sur un anneau de support
US12304759B1 (en) * 2024-02-24 2025-05-20 Guangzhou Dongshan South Seals Company Ltd. Automatic graphite conveying device and winding machine for spiral wound gasket

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102107357B (zh) * 2010-11-30 2012-05-30 蔡企胜 密封件专用不锈钢卷带成型机
KR101273079B1 (ko) 2012-11-09 2013-06-10 이미숙 스파이럴형 개스킷의 제조장치

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361335A (en) * 1980-05-06 1982-11-30 Nuovo Pignone S.P.A. Annular gasket for static sealing for very high temperatures and small pressure drops, and method of making
US4946088A (en) * 1989-07-14 1990-08-07 Chuang Shyue S Bushing forming machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361335A (en) * 1980-05-06 1982-11-30 Nuovo Pignone S.P.A. Annular gasket for static sealing for very high temperatures and small pressure drops, and method of making
US4946088A (en) * 1989-07-14 1990-08-07 Chuang Shyue S Bushing forming machine

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943848A3 (fr) * 1998-03-17 2000-07-05 Nippon Pillar Packing Co. Ltd. Procédé de fabrication d'une garniture d'étanchéité spiralée et appareillage pour la production de celle-ci
CN1106517C (zh) * 1998-03-17 2003-04-23 日本皮拉工业株式会社 涡旋形垫圈的制造方法及制造装置
ITMI20111497A1 (it) * 2011-08-05 2013-02-06 Gsket S R L Apparecchiatura di saldatura di nastri continui avvolti su un anello di supporto.
EP2554324A1 (fr) 2011-08-05 2013-02-06 GSKET S.r.l. Appareil pour souder des bandes continues enroulées sur un anneau de support
US20130032579A1 (en) * 2011-08-05 2013-02-07 GSKET S.r.l. Apparatus for Welding Continuous Strips Wound on a Support Ring
US9346133B2 (en) * 2011-08-05 2016-05-24 GSKET S.r.l. Apparatus for welding continuous strips wound on a support ring
IT201600095770A1 (it) * 2016-09-23 2018-03-23 Gsket S R L Macchina per la produzione di guarnizioni spiralizzate
CN107866500A (zh) * 2016-09-23 2018-04-03 格斯凯特有限责任公司 用于生产缠绕垫片的机器
EP3323522A1 (fr) * 2016-09-23 2018-05-23 GSKET S.r.l. Machine pour la production de joints enroulés
US10207311B2 (en) 2016-09-23 2019-02-19 GSKET S.r.l. Machine for the production of coiled gaskets
CN107866500B (zh) * 2016-09-23 2020-03-10 格斯凯特有限责任公司 用于生产缠绕垫片的机器
WO2019234577A1 (fr) * 2018-06-04 2019-12-12 GSKET S.r.l. Appareil compact pour souder des bandes enroulées sur un anneau de support
CN110203738A (zh) * 2019-05-27 2019-09-06 慈溪市宝翔机械有限公司 一种石墨上料机构及一种缠绕垫片自动缠绕机
US12304759B1 (en) * 2024-02-24 2025-05-20 Guangzhou Dongshan South Seals Company Ltd. Automatic graphite conveying device and winding machine for spiral wound gasket

Also Published As

Publication number Publication date
DE69426628D1 (de) 2001-03-01
EP0707906B1 (fr) 2001-01-24

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