Apparatus for inserting a part into a foundry core to be completed to a core assembly

• US 5,758,710 A
• Filed: 03/12/1997
• Issued: 06/02/1998
• Est. Priority Date: 09/12/1994
• Status: Expired due to Fees

• Current Assignee: Adolf Hottinger Maschinenbau GmbH
• Original Assignee: Adolf Hottinger Maschinenbau GmbH
• Inventors: Pichler, Werner, Landua, Werner
• Primary Examiner(s): Lin, Kuang Y.
• Application Number:
  US08/793,951
• Time in Patent Office: 447 Days
• Field of Search: 164/28, 164/168, 164/186, 164/200, 164/228, 164/230, 164/231, 164/339
• US Class Current: 164/200
• CPC Class Codes: B22C 9/103 Multipart cores
• CPC Class Codes: B22C 9/12 Treating moulds or cores, e.g. drying, hardening

Abstract

An apparatus for inserting a part (6) into a foundry core (1) that is to be completed to a core assembly between two core shooting stations (2) is designed and constructed for a fully automatic handling of the part (6) such as to include a magazine (7) for making available the part (6), a manipulator (8) for receiving the part from magazine (7) and delivering the part (6) to the foundry core (1), and a transfer device (9) for moving the manipulator (8) between the magazine (7) and the foundry core (1).

Claims

1. An apparatus for producing foundry core assemblies comprising

a plurality of core shooting stations,

at least one conveyor plate which is adapted to be transferred serially between the shooting stations and receive a foundry core at each shooting station to form a foundry core assembly, and

means for assembling a part onto said foundry core which is positioned on said one conveyor plate at a location between two of said shooting stations, said assembling means comprising

a) a magazine for storing a plurality of said parts;

and

b) a manipulator for receiving a part from said magazine and delivering the part to the foundry core which is positioned on said one conveyor plate at said location.

2. The apparatus as defined in claim 1 wherein said magazine comprises at least one vertically arranged container for receiving a plurality of the parts therein in a vertical stack, and a lifting mechanism positioned to enter said one container from below and lift the stack of parts so that the uppermost part is lifted to a delivery position.

3. The apparatus as defined in claim 2 wherein said lifting mechanism comprises a vertically movable lifting rod having a lifting plate at the upper end thereof for engaging the stack of parts.

4. The apparatus as defined in claim 2 wherein said magazine further comprises a sensor positioned for detecting the presence of a part at said delivery position, and means controlled by said sensor for actuating said lifting mechanism.

5. The apparatus as defined in claim 1 wherein said manipulator comprises a receiving device for picking up a part from the magazine, and a transfer device for moving the receiving device between the magazine and the foundry core.

6. The apparatus as defined in claim 5 wherein the manipulator further comprises a sensor for detecting a part picked up by said receiving device.

7. The apparatus as defined in claim 5 wherein said parts are magnetic, and wherein the receiving device comprises a receiving plate and at least one holding magnet.

8. The apparatus as defined in claim 7 wherein the one holding magnet is located outside of a plane defined by said receiving plate and spaced therefrom such that upon contacting a part by the receiving plate, only a single part can be retained.

9. The apparatus as defined in claim 8 wherein the receiving plate is resiliently mounted so as to permit it to be pushed against a part in a resilient manner.

10. The apparatus as defined in claim 7 wherein said magnet is mounted to a retraction device which permits the magnet to be selectively removed from the receiving plate.

11. The apparatus as defined in claim 5 wherein the receiving plate mounts an engagement device for accurately positioning the received part on the receiving plate.

12. An apparatus for producing foundry core assemblies comprising

a plurality of core shooting stations, with each station being configured for producing at least two side by side foundry cores on a conveyor plate which is adapted to be transferred serially between the shooting stations, and

means for assembling a part onto each of the two side by side foundry cores which are positioned on the conveyor plate at a location between two of the shooting stations, said assembling means comprising

a) at least two magazines, each for storing a plurality of said parts, and

b) a manipulator for receiving a part from each of said magazines and delivering the parts to respective ones of the foundry cores which are positioned on said conveyor plate at said location.

13. The apparatus as defined in claim 12 wherein said two magazines are spaced apart along a line which parallels the spacing between said two foundry cores which are positioned on the conveyor plate at said location.

14. The apparatus as defined in claim 13 wherein said assembling means further comprises a revolving support mounted for rotation about a vertical axis, and wherein said at least two magazines comprise a plurality of magazines arranged in a concentric circle on said revolving support so that selected pairs of magazines may be aligned along said line.

15. The apparatus as defined in claim 14 wherein said plurality of magazines are arranged on said revolving support so that the selected pairs of magazines are spaced apart a distance substantially equal to the spacing of said two foundry cores which are positioned on the conveyor plate at said location.

16. The apparatus as defined in claim 14 wherein said revolving support comprises a stationary bridge, and an index table rotatably mounted to said bridge for rotation about said vertical axis, and wherein said plurality of magazines are mounted to said index table.

17. The apparatus as defined in claim 14 wherein each of said magazines comprises a vertically arranged container for receiving a plurality of the parts therein in a vertical stack.

18. The apparatus as defined in claim 17 wherein said assembling means further comprises a pair of lifting mechanisms positioned to enter respective ones of the containers from below and lift the stack of parts therein when the containers are spaced apart along said line.

19. The apparatus as defined in claim 16 wherein said bridge mounts a pair of feed tubes which are spaced apart along said line, and such that a selected pair of said magazine containers may be positioned below respective feed tubes and parts can be lifted from the selected pair of magazine containers by said pair of lifting mechanisms and such that the uppermost part is lifted to a delivery position located in the respective feed tube.

20. The apparatus as defined in claim 19 wherein a senior is associated with each of said feed tubes for detecting the presence of a part at the feed tube, and means controlled by said sensors for vertically moving the pair of lifting mechanisms.

21. The apparatus as defined in claim 18 wherein said manipulator comprises a pair of receiving devices which are spaced apart a distance corresponding to the spacing of the pair of magazines which are aligned along said line, and a transfer device for simultaneously moving the pair of receiving devices between such pair of magazines and the two side by side foundry cores on the conveyor plate at said location.

22. The apparatus as defined in claim 21 wherein the pair of receiving devices are rigidly interconnected via a bridge, and wherein the manipulator further comprises a lifting mechanism mounted to the bridge.

23. The apparatus as defined in claim 22 wherein the manipulator further comprises a linear guiding unit, to which the lifting mechanism of the manipulator is connected.