EP0467890B1 - Procede et dispositif pour visser des parties fragiles - Google Patents

Procede et dispositif pour visser des parties fragiles Download PDF

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Publication number
EP0467890B1
EP0467890B1 EP19900903594 EP90903594A EP0467890B1 EP 0467890 B1 EP0467890 B1 EP 0467890B1 EP 19900903594 EP19900903594 EP 19900903594 EP 90903594 A EP90903594 A EP 90903594A EP 0467890 B1 EP0467890 B1 EP 0467890B1
Authority
EP
European Patent Office
Prior art keywords
screwing
parts
screw
screw spindle
screws
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
EP19900903594
Other languages
German (de)
English (en)
Other versions
EP0467890A1 (fr
Inventor
Werner Landua
Reiner Rommel
Walter Rauscher
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.)
Adolf Hottinger Maschinenbau GmbH
Original Assignee
Adolf Hottinger Maschinenbau GmbH
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
Priority claimed from DE19893911635 external-priority patent/DE3911635C1/de
Priority claimed from DE19904004903 external-priority patent/DE4004903C1/de
Application filed by Adolf Hottinger Maschinenbau GmbH filed Critical Adolf Hottinger Maschinenbau GmbH
Publication of EP0467890A1 publication Critical patent/EP0467890A1/fr
Application granted granted Critical
Publication of EP0467890B1 publication Critical patent/EP0467890B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/103—Multipart cores

Definitions

  • the invention relates to a device for connecting parts with low strength, in particular a device for screwing masks, molds, foundry cores, preferably sole and water jacket cores, and a corresponding method.
  • the cores are formed by hand or with the help of core molding machines in special multi-part core boxes or core bushings.
  • the core is generally produced by blowing, plugging and shooting.
  • the individual cores are combined or brought together in separate operations by gluing or nailing, which makes the manufacturing process very cumbersome, labor-intensive and time-consuming (DE-PS 35 26 265 and DE-GM 75 15 919).
  • the starting point for the device according to the invention or for the method according to the invention is the prior art known from DE-OS 25 22 161. From this document, a method and an apparatus for connecting multi-part, heat-curable foundry cores are known.
  • the foundry cores are connected to one another by means of metal pins, these being knocked into passages and forming an interference fit with the cores.
  • the present invention is therefore initially based on the object of specifying a device for connecting low-strength parts, in particular for connecting masks, molds, foundry cores, preferably sole and water jacket cores, with which the parts to be combined - without any intermediate handling - can be brought directly from the manufacturing site to the screwing station.
  • a device for connecting low-strength parts in particular for connecting masks, molds, foundry cores, preferably sole and water jacket cores, with which the parts to be combined - without any intermediate handling - can be brought directly from the manufacturing site to the screwing station.
  • the risk of damage to the parts to be connected or even breakage of the material should be considerably reduced.
  • a corresponding procedure is also to be specified.
  • the above object is achieved in that a gripping device for grasping the parts to be connected and at least one screwdriver and a drive device for the screwdriver are provided.
  • the screw spindle is spring-mounted at least in the screw feed direction.
  • a spring housing is formed for the resilient mounting of the screw spindle between the drive device of the screw spindle and the screw spindle. At least one spring element acting between the drive device and the screw spindle is provided in this spring housing.
  • a driving pin is further advantageously provided, which sits on the spring element and thereby represents a link or an operative connection between the spring element and the screw.
  • the torque of the drive device or of the screwdriver is determined by a preferably adjustable - automatic - shut-off clutch provided in the drive device.
  • clamping jaws are provided for holding the screws.
  • the holding pressure is generated by means of pneumatic or hydraulic cylinder-piston arrangements.
  • the jaws open to push the screws through.
  • the particles of the parts to be screwed which get into the area of the device during screwing are blown out or sucked away by means of a blow-out device.
  • the screw spindle is also resiliently mounted transversely to the screw feed direction. This creates a slight play of the screw spindle orthogonal to the screw feed direction, as a result of which the screw spindle can tilt slightly.
  • a shooting device for shooting in the screws to be screwed in by the screwdriver is provided, in particular from the point of view of a fully automatic connection of the parts in question.
  • the insertion device has a reflection light barrier to monitor and regulate these processes.
  • the position of the screwdrivers can be changed by means of spindles, as a result of which the screwdrivers are set to different screwing points.
  • the inventive method for connecting parts with low strength in particular for connecting masks, Molds, foundry cores, preferably of sole and water jacket cores, are first grasped, the parts to be connected by means of a gripping device and braced together. The parts are then positioned in the work area of a screwdriver. In the case of foundry cores to be screwed, the parts or cores are regularly positioned above one or more screwdrivers. Then one or more screws are shot into the screwdriver. The parts are screwed together, in a particularly advantageous manner to prevent damage to the parts or to avoid brittle fracture, the screw feed, ie the screwing speed, is compensated for by a resilient mounting of the screw spindle without impairing the contact pressure.
  • the method step of screwing in the screw is advantageously designed such that the torque of the screwdriver is determined or regulated by a preferably adjustable automatic shut-off clutch.
  • FIGS 1 to 3, 5 and 6 show an embodiment of an inventive device of an inventive device for screwing parts 1, 2 with low strength.
  • This is a screwing device for screwing foundry cores, namely sole and water jacket cores 1, 2.
  • the device according to the invention includes a gripping device 3 for gripping the foundry cores 1, 2 to be screwed, and a screwdriver 6 having a screw spindle 10 and a drive device 11 for the screw spindle 10.
  • the screw spindle 10 is spring-mounted at least in the screw feed direction. This is evidently achieved in that for the resilient mounting of the screw spindle 10 between the drive device 11 of the screw spindle 10 and the screw spindle 10, a spring housing 12 with one between the drive device 11 and the screw spindle 10 acting spring element 13 is arranged. A driver pin 14 is seated on the spring element 13.
  • the torque of the drive device 11 or of the screwdriver 6 is determined by an adjustable automatic shut-off clutch provided in the drive device 11.
  • clamping jaws 15 are provided for holding the screws.
  • the required holding pressure is generated by means of pneumatic or hydraulic cylinder-piston arrangements 16.
  • the clamping jaws 15 only open for pushing through the screws 5.
  • Particles of the parts 1, 2 to be screwed possibly reaching the area of the device during screwing, are blown out by means of a blow-out device 17 or sucked off by means of a suction device.
  • the screw 10 can also be resiliently mounted transversely to the screw feed direction, so that screws 5 can also be easily screwed in, which are not aligned with the original axis of the screw 10.
  • the shooting device 4 can have a separating device (not shown in the figures) for separating the screws 5.
  • the mode of operation of the device according to the invention is described below.
  • the parts 1, 2 or the sole core 1 and the water jacket core 2 are plugged together or joined and gripped by means of the gripping device 3 and braced together.
  • the clamped parts 1, 2 are brought over the screwdriver 6.
  • a screw 5 or screws 5 are then pneumatically injected into the clamping jaws 15 by means of the shooting device 4 through the transport hoses 8.
  • the parts 1, 2 are then screwed together.
  • the respective screw position of the spindle 10 can be specified via an adjusting spindle 7.
  • the screw spindles 10 with drive motor 11, spring housing 12, spring 13 and driving pin 14 are used for the gentle screwing of the parts 1, 2, the screw feed or screwing speed being balanced without the contact pressure of the screw spindle 10 on the screw 5 being impaired.
  • the screws are held by the clamping jaws 15, which can be actuated via the pneumatic cylinder 16.
  • reference numbers 18, 19 refer to ball bearings and a bearing bush.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Devices For Molds (AREA)

Abstract

Un dispositif est utile pour visser des parties fragiles, notamment pour visser des carapaces, moules et noyaux de fonderie, de préférence des noyaux à socle et à chemise d'eau. Pour faciliter la manutention de ces parties, un dispositif de préhension (3) permettant la préhension de ces parties (1, 2) à visser et au moins un tournevis (6) comportant une broche filetée (10) et un dispositif d'entraînement (11) de cette dernière sont prévus. Dans un mode de réalisation particulièrement avantageux, la broche filetée (10) est montée élastiquement dans le sens d'avancement de la vis, c'est-à-dire dans le sens axial, et éventuellement également dans le sens radial.

Claims (13)

  1. Dispositif pour réunir des pièces (1,2) de faible solidité, notamment pour réunir des masques, des moules, des noyaux de fonderie, de préférence des noyaux de semelles et de chemises d'eau,
    caractérisé par le fait qu'il est prévu un dispositif de préhension (3) pour saisir les pièces (1,2) devant être réunies, et au moins un dispositif de vissage (10) possédant une tige de vissage (10) et un dispositif (11) d'entraînement de la tige de vissage (10), pour visser les pièces, que le dispositif de vissage (6) est inséré de manière à être réglable à l'aide de broches (7) et que la tige de vissage (10) est montée élastiquement au moins dans la direction d'avance de vissage.
  2. Dispositif selon la revendication 1, caractérisé en ce que pour le montage élastique de la tige de vissage (10), entre le dispositif (11) d'entraînement de la tige de vissage (10) et cette dernière est installé un logement (12) pour ressort qui comporte au moins un élément de ressort (13) agissant entre le dispositif d'entraînement (11) et la tige de vissage (10).
  3. Dispositif selon la revendication 2, caractérisé en ce que l'élément de ressort (13) est réalisé sous la forme d'un ressort de pression.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce qu'un goujon d'entraînement (14) est monté sur l'élément de ressort (13).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le couple du dispositif d'entraînement (11) ou du dispositif de vissage (6) est déterminé au moyen d'un accouplement automatique de débrayage, de préférence réglable, prévu dans le dispositif d'entraînement (11).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le contrôle de la vis (5) devant être vissée est réalisé au moyen d'un dispositif d'exploration lumineux (20) qui réalise une détection, de préférence un dispositif d'exploration lumineux à réflexion.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que, lors de l'insertion automatique des vis (5) il est prévu, pour retenir les vis (5), des mâchoires de serrage (15), que la pression de retenue est produite au moyen de dispositifs pneumatiques ou hydrauliques à cylindre et piston (16) et que les mâchoires de serrage ( 15 ) s'ouvrent, pour le passage des vis (5), sans perte du centrage de cette dernière.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que, lors du vissage des vis (5), des particules, qui parviennent dans la zone au voisinage du dispositif, des pièces (1,2) devant être réunies par vissage sont évacuées par soufflage au moyen d'un dispositif d'évacuation par soufflage (17) ou sont aspirées au moyen d'un dispositif d'aspiration.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que la tige de vissage (10) est également supportée élastiquement transversalement par rapport à la direction d'avance de vissage de sorte que l'on peut visser des vis (5) qui ne sont pas alignées avec l'axe initial de la tige de vissage (10).
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce qu'il est prévu un appareil d'enfoncement (4) servant à enfoncer des vis (5) devant être vissées au moyen du dispositif de vissage (6).
  11. Dispositif selon la revendication 10, caractérisé par le fait que l'appareil d'enfoncement (4) possède un dispositif d'individualisation servant à séparer les vis (5).
  12. Procédé pour réunir des pièces (1,2) présentant une faible solidité, notamment pour réunir des masques, des moules, des noyaux de fonderie, de préférence des noyaux de semelles et de chemises d'eau, caractérisé par les étapes opératoires suivantes :
       saisie et serrage des pièces à réunir (1,2) au moyen d'un dispositif de préhension ( 3 ),
       positionnement des pièces (1,2) dans la zone de travail d'un dispositif de vissage (6), et
       insertion de vis (5) dans le dispositif de vissage (6) et réunion par vissage des pièces (1,2), l'avance de vissage, c'est-à-dire la vitesse de vissage, étant compensée sans perturbation de la pression de serrage, par un montage élastique de la tige de vissage (10).
  13. Procédé selon la revendication 12, caractérisé en ce que, lors du vissage d'une vis (5), le couple du dispositif de vissage (6) est déterminé ou réglé par un accouplement automatique de débrayage, de préférence réglable.
EP19900903594 1989-04-10 1990-03-01 Procede et dispositif pour visser des parties fragiles Expired - Lifetime EP0467890B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893911635 DE3911635C1 (en) 1989-04-10 1989-04-10 Automatic screwing together of foundry cores - allowing cores to be assembled immediately after mfr.
DE3911635 1989-04-10
DE19904004903 DE4004903C1 (fr) 1990-02-16 1990-02-16
DE4004903 1990-02-16

Publications (2)

Publication Number Publication Date
EP0467890A1 EP0467890A1 (fr) 1992-01-29
EP0467890B1 true EP0467890B1 (fr) 1993-06-02

Family

ID=25879758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900903594 Expired - Lifetime EP0467890B1 (fr) 1989-04-10 1990-03-01 Procede et dispositif pour visser des parties fragiles

Country Status (5)

Country Link
EP (1) EP0467890B1 (fr)
JP (1) JPH07110394B2 (fr)
CA (1) CA2051421A1 (fr)
ES (1) ES2043359T3 (fr)
WO (1) WO1990011848A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112621195B (zh) * 2020-11-30 2021-10-08 九江市海纳电讯技术有限公司 一种合路器加工用装配调试盖板加工装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2549601A1 (de) * 1975-11-05 1977-05-12 Erich Klesatschke Schrauber zum einschrauben von schrauben o.dgl.
JPS5784686A (en) * 1980-11-17 1982-05-27 Hitachi Ltd Construction of screw driver rotation
DE3424911A1 (de) * 1984-07-06 1986-01-16 Audi AG, 8070 Ingolstadt Verfahren zum eindrehen einer schraube in duennwandige bleche sowie vorrichtung zur durchfuehrung des verfahrens
JPS61180664A (ja) * 1985-02-04 1986-08-13 Honda Motor Co Ltd サイアミ−ズ型シリンダブロツク素材の鋳造方法
JPS61199551A (ja) * 1985-02-28 1986-09-04 Isuzu Motors Ltd 複雑な内空部を有する構造体の鋳造方法
DE3614007A1 (de) * 1986-04-25 1987-11-05 Bosch Gmbh Robert Vorrichtung zum automatischen zufuehren und eindrehen von schrauben
JPH0665448B2 (ja) * 1986-07-23 1994-08-24 本田技研工業株式会社 ボルト締付機

Also Published As

Publication number Publication date
JPH07110394B2 (ja) 1995-11-29
CA2051421A1 (fr) 1990-10-11
ES2043359T3 (es) 1993-12-16
EP0467890A1 (fr) 1992-01-29
JPH04506179A (ja) 1992-10-29
WO1990011848A1 (fr) 1990-10-18

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