A mold-entry positioning mechanism for glass rods

Abstract

The invention provides a positioning mechanism for placing a glass rod into a die, which can effectively prevent a seamless pipe from driving the heated glass rod to generate axial movement and radial runout, stably and precisely place the glass rod into the die and ensure the pressing processing of the glass rod through the die. The positioning mechanism comprises a track, an electric heating furnace and the pressing die, wherein the track is supported on a support frame through a track wheel, the electric heating furnace and the pressing die are arranged on one side of the track, a track fixing sleeve is arranged on the track, the telescopic seamless pipe is movably arranged in the track fixing sleeve, and the positioning mechanism is characterized in that a U-shaped bracket is arranged on the pressing die, the track wheel on one side is provided with a pawl and ratchet structure, a rack is correspondingly arranged between the electric heating furnace and the pressing die, a gear matched with the rack is arranged on the telescopic seamless pipe, and an inverted U-shaped guide tooth groove matched with the gear is arranged at the upper part of the gear.

Description

technical field [0001] The invention relates to the technical field of auto parts manufacturing, in particular to a mold-entry positioning mechanism for glass rods. Background technique [0002] The production process of glass blanks for automobile lamps includes preheating of glass rods - electric furnace heating of glass rods - mold pressing of glass rods - brittle fracture of blanks. In the production process of glass blanks for automotive lamps, crawlers are used to drive seamless Tube operation, glass rods are placed in seamless tubes, and the processing of glass rods in electric furnaces, molds and brittle breaking mechanisms of blanks is realized through the circular operation of crawlers. Due to the different sizes of glass blanks for automotive lights, processing in the production line Usually, "one rod multi-mode" or "multi-rod multi-mode" is used. When the track wheel stops, due to the inertia of the track, the track at the upper end is tight, so that the heated g...

AI Technical Summary

Problems solved by technology

[0002] The production process of glass blanks for automobile lamps includes preheating of glass rods - electric furnace heating of glass rods - mold pressing of glass rods - brittle fracture of blanks. Tube operation, glass rods are placed in seamless tubes, and the processing of glass rods in electric furnaces, molds and brittle breaking mechanisms of blanks is realized through the circular operation of crawlers. Due to the different sizes of glass blanks for automotive lights, processing in the production line Usually, "one rod multi-mode" or "multi-rod multi-mode" is used. When the track wheel stops, due to the inertia of the track, the track at the upper end is tight, so that the heated glass rod driven by the seamless tube cannot enter accurately. Due to the flexibility of the caterpillar, and in order to prevent the glass rod from drooping during the process of entering the mold, a rack and pinion device is installed between the electric furnace and the mold to make the glass rod rotate, and the seamless tube drives the heated glass rod into the mold. When the mold is molded, the seamless tube will drive the heated glass rod to produce axial movement and radial runout, making the glass rod unstable in the mold and affecting the mold pressing process of the glass rod

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