EP0467890A1 - Process and device for screwing fragile parts. - Google Patents
Process and device for screwing fragile parts.Info
- Publication number
- EP0467890A1 EP0467890A1 EP19900903594 EP90903594A EP0467890A1 EP 0467890 A1 EP0467890 A1 EP 0467890A1 EP 19900903594 EP19900903594 EP 19900903594 EP 90903594 A EP90903594 A EP 90903594A EP 0467890 A1 EP0467890 A1 EP 0467890A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw
- parts
- screwing
- screws
- screw 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.)
- Granted
Links
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 screwing parts with low strength, in particular a device for screwing masks, molds, foundry cores, preferably sole and water jacket cores, and a corresponding method.
- Cores from foundry technology are such parts with low strength, so that the problem occurring in practice is explained below using such cores.
- the cores are shaped by hand or with the help of core molding machines in special multi-part core boxes or core sleeves.
- the core is generally made by blowing, plugging and shooting.
- the individual cores are combined or brought together in separate work steps by gluing or nailing, which makes the production process very cumbersome, labor-intensive and time-consuming (DE-PS 35 26 265 and DE-GM 75 15 919).
- DE-PS 35 26 265 and DE-GM 75 15 919 When connecting parts with low strength or when connecting individual cores by nailing or screwing, it has also been found in practice that the material of the parts to be connected breaks easily due to shear forces.
- the present invention is first task zu ⁇ of providing a device for the assembly of parts with clotting ⁇ ger strength, in particular for the assembly of masks,
- casting cores preferably from sole and water jacket cores, specify with the to be combined the Parts - 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 screwed or even a material breakage should be considerably reduced.
- a corresponding method is to be specified.
- the above object is achieved in that a gripping device (3) for gripping the parts to be screwed (1, 2) and at least one screw screw (6) and a drive device for the screw screw are provided.
- the screw spindle is spring-mounted at least in the screw feed direction.
- a spring housing In a particularly advantageous manner for elastic support de screw spindle between the drive means of the screw ⁇ spindle and the screw is formed a spring housing. At least one spring element acting between the drive device and the screw spindle is provided in this spring housing.
- a driving pin which sits on the spring element and thereby represents a link or an operative connection between the spring element and the screw.
- 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 reach the area of the device during screwing are blown out or sucked away by means of a blowing device.
- the screw spindle is also advantageously 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 particularly necessary from the point of view of a fully automatic connection of the parts in question. seen.
- the insertion device has a reflection light barrier for monitoring and regulating these processes.
- the parts to be screwed are first gripped by means of a gripping device and clamped together.
- the parts are then positioned in the work area of a screwdriver.
- the parts or cores are regularly positioned above one or more screwdrivers.
- one or more screws are shot into the screwdriver.
- the parts are screwed together, the screw feed in a particularly advantageous manner to avoid damage to the parts or to prevent brittle fracture, i.e. the screwing speed is balanced without affecting the contact pressure by a resilient bearing of the screw spindle.
- 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.
- FIG. 3 is a top view, schematically, of the device of FIG. 1,
- FIGS. 1 to 3, 5 and 6 show an exemplary embodiment of a device according to the invention of a device according to the invention for screwing parts I, 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 to be screwed, 2 and a screwdriver 10 having a screw spindle 10 and a drive device 11 for the screw spindle 10.
- the screw spindle 10 is at least resiliently mounted 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 1 is arranged with a spring element 13 acting between the drive device 11 and the screw spindle 10. 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.
- any particles of the parts 1, 2 to be screwed that get into the area of the device are blown out by means of a blow-out device 17 or sucked off via a suction device.
- the screw 1 can also be resiliently mounted transversely to the screw feed direction, so that screws 5 can also be easily screwed in, which are not cursed with the original axis of the screw 10.
- 1 and 5 indicate that a shot-in device 4 is provided for shooting in the screws 5 to be screwed in by the screwdriver 6.
- 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 put together or joined and gripped by means of the gripping device 3 and clamped 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 pin 14 serve 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 is.
- the screws are held by the clamping jaws 15, which can be actuated via the pneumatic cylinder 16.
- ball bearings and a bearing bush are designated by the reference numerals 18, 19.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Casting Devices For Molds (AREA)
- Moulds For Moulding Plastics Or The Like (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.A device is useful for screwing fragile parts, in particular for screwing shells, molds and foundry cores, preferably cores with a base and a water jacket. To facilitate the handling of these parts, a gripping device (3) allowing the gripping of these parts (1, 2) to be screwed and at least one screwdriver (6) comprising a threaded spindle (10) and a drive device ( 11) of the latter are provided. In a particularly advantageous embodiment, the threaded pin (10) is resiliently mounted in the direction of advancement of the screw, that is to say in the axial direction, and possibly also in the radial direction.
Description
Claims
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 | ||
DE4004903 | 1990-02-16 | ||
DE19904004903 DE4004903C1 (en) | 1990-02-16 | 1990-02-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0467890A1 true EP0467890A1 (en) | 1992-01-29 |
EP0467890B1 EP0467890B1 (en) | 1993-06-02 |
Family
ID=25879758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900903594 Expired - Lifetime EP0467890B1 (en) | 1989-04-10 | 1990-03-01 | Process and device for screwing fragile parts |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0467890B1 (en) |
JP (1) | JPH07110394B2 (en) |
CA (1) | CA2051421A1 (en) |
ES (1) | ES2043359T3 (en) |
WO (1) | WO1990011848A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112621195A (en) * | 2020-11-30 | 2021-04-09 | 九江市海纳电讯技术有限公司 | Combiner processing is with assembly debugging apron processingequipment |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2549601A1 (en) * | 1975-11-05 | 1977-05-12 | Erich Klesatschke | Mechanical screw driver with head holding chuck - has tube form holder to hold screw head with some radial play to permit alignment |
JPS5784686A (en) * | 1980-11-17 | 1982-05-27 | Hitachi Ltd | Construction of screw driver rotation |
DE3424911A1 (en) * | 1984-07-06 | 1986-01-16 | Audi AG, 8070 Ingolstadt | Method of screwing a screw into thin-walled metal sheets and apparatus for carrying out the method |
JPS61180664A (en) * | 1985-02-04 | 1986-08-13 | Honda Motor Co Ltd | Casting method for siamese type cylinder block stock |
JPS61199551A (en) * | 1985-02-28 | 1986-09-04 | Isuzu Motors Ltd | Casting method for structural body having intricate hollow parts |
DE3614007A1 (en) * | 1986-04-25 | 1987-11-05 | Bosch Gmbh Robert | DEVICE FOR THE AUTOMATIC FEEDING AND TURNING IN OF SCREWS |
JPH0665448B2 (en) * | 1986-07-23 | 1994-08-24 | 本田技研工業株式会社 | Bolt tightening machine |
-
1990
- 1990-03-01 WO PCT/DE1990/000140 patent/WO1990011848A1/en active IP Right Grant
- 1990-03-01 CA CA 2051421 patent/CA2051421A1/en not_active Abandoned
- 1990-03-01 JP JP2503595A patent/JPH07110394B2/en not_active Expired - Fee Related
- 1990-03-01 EP EP19900903594 patent/EP0467890B1/en not_active Expired - Lifetime
- 1990-03-01 ES ES90903594T patent/ES2043359T3/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9011848A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112621195A (en) * | 2020-11-30 | 2021-04-09 | 九江市海纳电讯技术有限公司 | Combiner processing is with assembly debugging apron processingequipment |
CN112621195B (en) * | 2020-11-30 | 2021-10-08 | 九江市海纳电讯技术有限公司 | Combiner processing is with assembly debugging apron processingequipment |
Also Published As
Publication number | Publication date |
---|---|
WO1990011848A1 (en) | 1990-10-18 |
EP0467890B1 (en) | 1993-06-02 |
JPH04506179A (en) | 1992-10-29 |
ES2043359T3 (en) | 1993-12-16 |
JPH07110394B2 (en) | 1995-11-29 |
CA2051421A1 (en) | 1990-10-11 |
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