초록 ▼

The invention relates to a novel machining tool and a punching head for use in one such tool. An internal feed channel is formed between the connection for the external feed of components and the readiness position on the joining channel at least over a partial length of a deformable or flexible int

The invention relates to a novel machining tool and a punching head for use in one such tool. An internal feed channel is formed between the connection for the external feed of components and the readiness position on the joining channel at least over a partial length of a deformable or flexible internal feed, so that the run of this feed within the tool and/or the correction of the feed to the external supply can be optimally matched to the respective tool execution.

대표청구항 ▼

1. A punching head for insertion of joining parts into workpieces, the punching head having a loading channel, which is a component of a feed for feeding the joining parts from an external supply unit and which ends at a readiness position formed in a joining channel, the joining channel having a jo

1. A punching head for insertion of joining parts into workpieces, the punching head having a loading channel, which is a component of a feed for feeding the joining parts from an external supply unit and which ends at a readiness position formed in a joining channel, the joining channel having a joining channel inlet at an axial distance from the readiness position, and with a plunger which can be moved between an initial position in which a plunger surface of the plunger is located outside the joining channel and outside the readiness position on a side of the readiness position facing away from the joining opening, and a joining position, in which the plunger with the plunger surface is located in the joining channel, means on the punching head or in the area of the punching head for moving the joining parts within the punching head, wherein the means for moving the joining parts within the loading channel is delivery air produced on the punching head or in the area of the punching head,the loading channel extending impediment free into the readiness position, andspring loaded catches having top sides in the readiness position, the top sides of the catches forming impediment free continuations of the guide surface of the loading channel in the readiness position, such that the top sides of the catches are arranged in a common plane with the at least one guide surface of the loading channel, wherein each catch has a first leg and a second leg and is pivotally supported against the action of a reset spring on the first leg, the second leg projecting laterally into the joining channel, the top side of the second leg forming the continuation of the guide surface of the loading channel in the readiness position. 2. The punching head as claimed in claim 1, further comprising means for blocking of the readiness position. 3. Punching head as claimed in claim 2, wherein the means for blocking the readiness position are formed by the plunger of the punching head or by another mechanical element which can be moved into the readiness position or into the loading channel for blocking. 4. The punching head as claimed in claim 1, wherein the joining parts are supplied via the external feed to the punching head by compressed air wherein there are means for moving the respective joining part within the punching head to the readiness position and wherein the means are formed by the delivery air which is produced on the punching head in an area of the punching head. 5. The punching head as claimed in claim 1, wherein the punching head is formed at least on a partial length by a tube section of a flexible material. 6. The punching head as claimed in claim 1, wherein the punching head is formed by a loading channel which is formed in a housing part of the punching head and which ends at the readiness position and from a guide piece or tube piece of flexible material, which forms a channel for the joining parts. 7. The punching head as claimed in claim 1, wherein the joining parts are supplied individually to the punching head. 8. The punching head as claimed in claim 1, further comprising by control means for shutting off by at least one permanent magnet at least one vacuum opening the delivery air when a joining part is positioned at the readiness position. 9. The punching head as claimed in claim 1, further comprising means for accurate positioning of the respective joining part at the readiness position. 10. The punching head as claimed in claim 9, wherein the means for accurate positioning are formed. 11. The punching head as claimed in claim 1, wherein the plunger surface in the initial position of the plunger is spaced away from the readiness position or from the joining part which is ready at the readiness position. 12. The punching head as claimed in claim 11, wherein a distance of the plunger surface of the plunger located in the initial position from the readiness position or a joining part is greater than one third of the dimension which the joining part has in a direction of the plunger axis (AS). 13. The punching head as claimed in claim 1, wherein on the plunger surface there are means for holding the joining part, the means is at least one permanent magnet or a vacuum opening. 14. The punching head as claimed in claim 1, wherein there are at least two permanent magnets which are radially offset relative to the plunger axis (AS). 15. The punching head as claimed in claim 1, further comprising means for resetting the plunger into its initial position, these means being formed by a pressurized medium, compressed air in the first cylinder space, in which there is a piston which is connected to the plunger to be able to move axially. 16. The punching head as claimed claim 1, further comprising means for moving the plunger out of its initial position into the joining position or for holding the plunger in this joining position, these means being formed by a piston which is connected to the plunger, and which is provided to be able to move in a second cylinder space which can be exposed to a pressurized medium, for example compressed air. 17. The punching head as claimed in claim 1, wherein the joining parts are injected on at least one punching head regardless of the position of the plunger. 18. The punching head as claimed in claim 17, wherein the respective joining part is injected at latest when the plunger has assumed its initial position. 19. The punching head as claimed in claim 1, further comprising a feed or injection means, with an actuating element, with which the joining part can be inserted into a channel of the external feed in a position which is provided in the flow direction of the delivery air after the air inlet nozzles, and means for closing the channel after insertion of the joining part in the flow direction of the delivery air before the air inlet nozzles. 20. A machining tool, for use in a press, comprising at least one punching head as claimed in claim 1,at least two tool parts which can move opposite one another,said at least one punching head on one of said tool parts. 21. A punching head as claimed in claim 1, wherein said plunger can be moved in a direction of a plunger axis (AS), the longitudinal extension of the loading channel extending radial to the plunger axis (AS).