REPLACEABLE ROLLER

WIPO Patent Application WO/2019/033528

A1

A replaceable roller, comprising a roller body (1), a roller sleeve (2), a locking ring (3), and keys (4); the roller sleeve (2) is sleeved on the roller body (1); first key slots (12) are formed at edges of two ends of a roller base (11) of the roller body (1); second key slots (21) are formed at both ends of an inner wall of the roller sleeve (2) corresponding to the first key slots (12); the first key slots (12) and the second key slots (21) are matched and then inserted with the keys (4), so that the roller body (1) and the roller sleeve (2) cannot rotate relatively, a groove (111) is formed in end faces of two ends of the roller base (11); the groove (111) is provided with threads; a retainer ring (31) is provided at one surface of the locking ring (3); the retainer ring (31) is provided with threads matched with the groove (111). By replacing the roller sleeve (2), the service life of the roller is prolonged, and thus the production cost is reduced. Moreover, the key slots (12, 21) are cooperatively used with the locking ring (3), ensuring the sleeve stability of the roller sleeve (2), and saw teeth of the inner ring of the locking ring (3) match with a locking block (5) to ensure fixation of the locking ring (3).

CAI YOUGEN (CN)

PCT/CN2017/106261

February 21, 2019

October 16, 2017

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JIANGSU RUNFU MECH ROLL MANUFACTURING CO LTD (CN)

B21B27/03

CN106694559A	2017-05-24
CN2938458Y	2007-08-22
CN202683603U	2013-01-23
CN201279524Y	2009-07-29
JP4998822B2	2012-08-15
CN200998733Y	2008-01-02
KR101461759B1	2014-11-13
CN204866840U	2015-12-16
CN206104552U	2017-04-19

LIAN & LIEN IP ATTORNEYS (CN)

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