US 11,951,531 B2
Method and device for producing a hose nipple
Dominik Kempf, Frankfurt (DE); Harald Jung, Auenwald (DE); and Eugen Kositza, Romrod (DE)
Assigned to ContiTech Techno-Chemie GmbH, Karben (DE)
Appl. No. 17/596,725
Filed by ContiTech Techno-Chemie GmbH, Karben (DE)
PCT Filed May 6, 2020, PCT No. PCT/EP2020/062500
§ 371(c)(1), (2) Date Dec. 16, 2021,
PCT Pub. No. WO2020/254033, PCT Pub. Date Dec. 24, 2020.
Claims priority of application No. 10 2019 208 854.6 (DE), filed on Jun. 18, 2019.
Prior Publication US 2022/0152688 A1, May 19, 2022
Int. Cl. B21J 5/12 (2006.01); B21J 5/02 (2006.01); B21J 13/02 (2006.01); B21K 1/16 (2006.01); B21K 21/12 (2006.01)
CPC B21J 5/12 (2013.01) [B21J 5/025 (2013.01); B21J 13/025 (2013.01); B21K 1/16 (2013.01); B21K 21/12 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for producing profiled hose nipples, the method comprising:
providing an apparatus having first and second tool halves, each having a first region and an end region and defining a tooth like profile having projecting teeth and grooves;
assembling the first and second tool halves and defining a cavity having the tooth like profile and a parting joint;
forming a hose nipple using the assembled first and second tool halves where ring-shaped webs are formed without coming into contact with surfaces of the grooves of the tooth like profile to form the ring-shaped webs without burrs at least in the parting joint, and where a burr-free run-on bevel is formed on an end of the hose nipple by the end regions of the first and second tool halves;
wherein each of the projecting teeth of the tooth-like profile of each tool half includes a semi-annular oblique surface that is inclined radially inwardly toward the respective end regions of the first and second tool halves,
wherein the semi-annular oblique surfaces of the projecting teeth form annular oblique surfaces in the hose nipple that define annular tapered troughs between the ring-shaped webs,
wherein all of the annular oblique surfaces of the hose nipple that are formed by the projecting teeth are inclined radially inwardly toward the end of the hose nipple having the burr-free run-on bevel, and
wherein during the forming, burrs are formed on the annular oblique surfaces of the annular tapered troughs at the parting joint.