Mould opening and closing drive mechanism of blow mould

Abstract

The invention discloses a mold opening and closing drive mechanism of a blowing mold. The mold opening and closing drive mechanism of the blowing mold comprises a rotating shaft, a rocker arm, a left connecting rod and a right connecting rod, wherein the center of the rocker arm is fixedly connected with the rotating shaft; two ends of the rocker arm are respectively hinged with one end of each of the left connecting rod and the right connecting rod; the other end of the left connecting rod is hinged with a mold closing middle plate; the other end of the right connecting rod is hinged with a mold closing rear plate; the mold closing rear plate and a mold closing front plate of the blowing mold are fixedly connected together through a plurality of spindles. An existing gear and rack meshing mechanism is replaced by a rotary rocker mechanism, so that the mold opening and closing drive mechanism has the characteristics of small abrasion, long service life, low noise, easy machining, and high fitting accuracy, and installing and adjusting procedures of the mold can be effectively simplified.

Description

technical field [0001] The invention relates to a blowing mould, in particular to a driving mechanism for opening and closing the blowing mould. Background technique [0002] Such as figure 1 and 2 As shown, the existing blow mold mainly includes a front plate 1' for clamping, a middle plate 2' for clamping and a rear plate 3' for clamping. The three are arranged side by side in sequence and can slide along the track. To realize normal mold opening and closing processing, it is necessary to ensure that the front plate 1' of mold clamping and the middle plate of mold clamping 2' are centered on the sealing cylinder 4', and the direction of movement of the two is opposite, and the distance and speed are the same. [0003] In the existing blow mold, the opening and closing drive mechanism of the mold clamping front plate 1' and the mold clamping middle plate 2' adopts a rack and pinion synchronous mechanism, which includes a set on the mold clamping middle plate 2' and the mo...

AI Technical Summary

Problems solved by technology

[0005] Although the synchronous drive mechanism with gear and rack can also realize the mold opening and closing operation of the mold clamping front plate 1' and the mold clamping middle plate 2', due to the direct contact and extrusion of the meshing teeth in the meshing transmission of the rack and pinion, there are Defects such as large wear, easy breakage of the rack, loud noise, high processing difficulty, and gear gaps in the rack and pinion

[0006] The main disadvantage is that it is inconvenient to install and adjust. When installing the mold, the thickness of the mold is caused by processing errors. In order to ensure the accuracy of mold opening and closing, it is necessary to adjust the distance between the front plate 1' and the middle plate 2' to the center of the sealing cylinder 4' , in this process, it is necessary to take out the driving gear 51', push the entire clamping frame, adjust the distance first, then rotate the rack fixing seat, adjust the positions of the upper and lower racks 52', 53' properly, and finally install Drive gear 51', the whole installation process is very troublesome, which brings great inconvenience to actual use and later maintenance

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