An automatic grinding and polishing system for crystal blanks

Abstract

Disclosed is an automatic system for grinding and polishing a crystal blank, comprising a first left and right transfer mechanism and a second left and right transfer mechanism, wherein blanking loading and unloading working position, a plurality of upper hemisphere grinding and polishing working positions and a butt-joint working position are arranged in sequence from left to right along the first left and right transfer mechanism, and a butt-joint working position, a plurality of lower hemisphere grinding and polishing working positions and a loading and unloading working position are arranged in sequence from right to left along the second left and right transfer mechanism; the loading and unloading working position is provided with blanking loading and unloading machinery thereon, all the grinding and polishing working positions are provided with grinding and polishing machineries thereon, and the butt-joint working position is provided with butt-joint machinery thereon. Each left and right transfer mechanism comprises a plurality of transfer manipulators and a track extending in a straight line in a left and right direction; fixture bases which are positioned on the loading and unloading machinery, the grinding and polishing machineries and the butt-joint machinery and used for installing fixtures are arranged in left and right rows in the length direction of the fixtures, and the transfer manipulators push the fixtures to slip between the adjacent left and right fixture bases in the length direction of the fixtures.

Description

technical field [0001] The invention belongs to the field of grinding and polishing processing of crystal products, and relates to an automatic grinding and polishing system for crystal blanks for automatic grinding and polishing processing of crystal blanks. Background technique [0002] In the prior art, the automatic grinding and polishing system (grinding and polishing machine) of crystal blanks includes: a feeding station, which is provided with a feeding mechanism capable of fixing the crystal blanks on the fixture; The upper hemisphere grinding station for grinding the hemisphere and at least one upper hemisphere polishing station for polishing the upper hemisphere of the crystal blank; the docking station is provided with the ability to transfer and fix the crystal blank from a fixture to On the other fixture, a docking mechanism capable of exchanging the positions of the two fixtures; at least one lower hemisphere grinding station for grinding the lower hemisphere o...

AI Technical Summary

Problems solved by technology

[0005] Publication No. CN102366914A discloses a kind of automatic cycle double-clamp jewelry polishing machine in the patent literature, the upper hemisphere grinding and polishing (front grinding and polishing) and the lower hemisphere grinding and polishing (back grinding and polishing) of the crystal blank are performed in the same processing cycle ( That is, the fixture circulation cycle), wherein the fixture seats on each station are arranged in parallel to the left and right along the length direction of the fixture (especially the grinding and polishing station), so that when the left and right transfer mechanism transfers the fixture between the stations, it needs to be extended first. Lift the fixture from the fixture seat of one station and then step over the fixture seat mechanism on the corresponding station, and then send it down and place it on the fixture seat of another station. Cumbersome, prone to failure and high cost

Moreover, the docking bracket (i.e. the adapter assembly part) and the waiting bracket (i.e. the clamp reset assembly part) are both 180 ° rotating structures in its docking mechanism, so there are the following problems: one, because the heating tube in the docking mechanism is generally High-frequency heating tubes or gas flame-throwing tubes are used, so the general heating tubes need to be connected with high-frequency generating equipment or gas supply equipment, etc., and the heating tubes should be installed between the two docking fixtures (seats), that is, installed on the above-mentioned In the adapter assembly, frequent rotations in a wide range of 180 degrees will complicate the connection structure between the heating tube and high-frequency generating equipment or gas supply equipment, and affect the service life; secondly, in order to free up the rotation space of the adapter assembly, The wire brushes and powder discs used for cleaning the upper fixtures and dipping and gluing are set far away from the adapter assembly. Their moving strokes are long and take up a lot of time; Powder gluing and 180-degree rotation are carried out successively, which takes up a lot of time, so that the transfer (docking) station takes longer, the waiting time of other grinding and polishing station mechanisms is prolonged, and the docking efficiency is low. Processing efficiency of automatic cycle

[0007] But the above-mentioned structure is that the fixture seats on each station are arranged parallel to the left and right along the length direction of the fixture (especially the grinding and polishing station), so that when the left and right transfer mechanism transfers the fixture between the stations, it needs to be stretched down from one station to the other. Lift the fixture on the fixture seat of the station, and then step over the fixture seat mechanism on the corresponding station, and then send it down and place it on the fixture seat of another station. Such a left-right transfer mechanism is complicated in structure, cumbersome and easy Faulty and costly

In its docking mechanism, the first front and rear transfer mechanism needs to transfer the belt clamp from the docking bracket to the conversion bracket, and then wait for the conversion bracket to rotate 180 ° after the upper and lower positions are reversed, and then the first front and rear transfer mechanism will transfer the material on the conversion bracket The jig with glue is sent to the docking bracket. During this process, the first front and rear transfer mechanism reciprocates the jig, and the docking bracket can only be in a waiting state, which increases the waiting time of the machine, so further improvements are needed to increase production efficiency.

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