Method and device for connecting objects by means of at least one plasticisable connecting element
AssigneeMaschinenfabrik Spaichingen GmbH
InventorHans-Dieter Braun
Life of this patent
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Abstract
A method and a device for connecting objects by means of a connecting element which can be plasticised by heat, on which connecting element a rivet head is formed by means of a heatable cap having a small-volume configuration. The cap is heated by a heating element which is moveable together with it in the direction of the connecting element and is configured as a large-volume heat store. The heating element is separated from the cap after forming the rivet head but before withdrawal of the cap from the rivet head, in order to enable rapid cooling of the rivet head.
Claims22
A device for connecting objects (30,32) by means of at least one connecting element (31) which can be plasticised by heat, containing a riveting tool which can be moved forwards and backwards in the direction of the connecting element (31) and has a cap (1) for forming a rivet head (36) on the connecting element (31) and a heating element (3) for heating the cap (1), wherein the heating element (3) is disposed on the riveting tool moveably relative to the cap (1) and is separable from the cap (1) before withdrawing the cap (1) from the rivet head (36) in order to accelerate the cooling, and wherein means (11, 18, 19, 23, 42, 45) are provided for generating a force acting between the heating element (3) and the cap (1) in the course of separating the heating element (3) form the cap (1), which force retains the cap (1) in a stationary manner on one of objects (30,32) or on the formed rivet head (36).
A device, for connecting objects (30, 32) by means of at least one connecting element (31) which can be plasticised by heat, containing a riveting tool which can be moved forwards and backwards in the direction of the connecting element (31) and has a cap (1) for forming a rivet head (36) on the connecting element (31) and a heating element (3) for heating the cap (1), wherein the heating element (3) is disposed on the riveting tool moveably relative to the cap (1) and wherein the riveting tool contains two coaxially disposed carrier pipes (2, 4), one of which is mounted telescopically displaceably in the other carrier pipe, and wherein the heating element (3) is provided at one end of one of the carrier pipes (4) and the cap (1) at one end of the other one of the carrier pipes (2) in such a manner that the heating element (3) and the cap (1) can be moved towards each other or removed from each other by relative displacement of the two carrier pipes (2, 4).
Dependencies are inferred from the claim text.