Double-pawl intermittent rotating mechanism

Abstract

The invention discloses a double-pawl intermittent rotating mechanism which is high in acting efficiency and long in service life. The double-pawl intermittent rotating mechanism comprises a swing rod, a first pawl, a second pawl and a ratchet wheel. A supporting shaft is hinged to the middle of the swing rod and the swing rod can swing in a reciprocating manner with the supporting shaft as a fulcrum. The lower end of the swing rod is hinged to the V-shaped first pawl. The middle of the first pawl is connected with a first tension spring. The end face of the first pawl is a slope matched with the toothed face of the ratchet wheel in shape. When the swing rod o swings clockwise, the first pawl can push the ratchet wheel to rotate. The side, the same as the first pawl, of the upper end of the swing rod is hinged to the V-shaped second pawl. The middle of the second pawl is connected with a second tension spring. The end face of the second pawl is a slope matched with the toothed face of the ratchet wheel in shape. When the swing rod swings anticlockwise, the second pawl can push the ratchet wheel to rotate.

Description

technical field [0001] The invention relates to a double pawl intermittent rotation mechanism. Background technique [0002] The intermittent motion mechanism is a mechanism that can convert the continuous motion of the active part into the regular motion and pause of the driven part. It is often used in machine tools, automatic machines and instruments to realize raw material feeding, finished product output, braking, indexing, rotation bit, stepping, overriding or reversing motion. The ratchet mechanism has the advantages of simple structure, convenient manufacture and reliable movement, and the rotation angle of the ratchet can be adjusted according to needs, so the ratchet mechanism can provide functions such as feed, brake, overrun and index indexing in production. The indexing table, indexing plate and indexing head widely use ratchet and pawl mechanisms to achieve intermittent rotation, but the existing ratchet and pawl mechanisms used in the above-mentioned indexing...

AI Technical Summary

Problems solved by technology

The indexing table, indexing plate and indexing head widely use ratchet and pawl mechanisms to achieve intermittent rotation, but the existing ratchet and pawl mechanisms used in the above-mentioned indexing table, indexing plate and indexing head often use a single The pawl moves the ratchet wheel to achieve intermittent movement, but the main disadvantages are: the action efficiency is low, and a ratchet is used to frequently move the ratchet wheel, and the end of the ratchet wears out quickly, which affects the service life

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