B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
112/41, 66/45
B23D 17/00 (2006.01) B21G 1/06 (2006.01) D04B 35/04 (2006.01) D05B 85/14 (2006.01)
Patent
CA 1308269
ABSTRACT OF THE DISCLOSURE A method and apparatus for producing the latch bearing in a latch needle for textile machines of the type in which a latch is pivotably mounted in a longitudinal slot between two cheeks of a needle shank by a hinge pin passing through mutually aligned transversely extending bores in at least one of the cheeks and a bearing portion of the latch between the cheeks. In accordance with the method a cylindrical wire is provided with transversely extending notches at intervals corresponding to the length of a hinge pin. The notched wire is converted by hot or cold treatment into a brittle, hard state. Individual hinge pins are broken off from the wire at the notches, and are subsequently inserted into the bores in the cheeks and the bearing portion of the latch to be securely fixed there. The apparatus includes a counter support and a clamping jaw respectively disposed on opposite sides of a space, for clamping a partially assembled latch needle in the space and a hole punch at the clamping jaw side of the space for passing in a hole punching direction through the cheeks and the transverse hole in the latch's bearing portion to form transverse bores therein which are axially aligned with the transverse bore in the bearing portion. A slide bearing disposed at the counter support side of the space with the counter support being disposed between the slide bearing and the space, is provided with a counter punch to be slideably advanced toward the counter support. A transfer element between the slide bearing and the counter support is movable transversely to the hole punching direc- tion between a receiving position for receiving a hinge pin, and an insertion position where the hinge pin is axially aligned with the hole punch and the counter punch. An insertion device is provided for inserting a hinge pin into the transfer element when said transfer element is in the receiving position.
588141
Fetherstonhaugh & Co.
Groz-Beckert Kommanditgesellschaft
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