Single-cylinder parallel mold closing mechanism

Abstract

The invention discloses a single-cylinder parallel mold closing mechanism. The single-cylinder parallel mold closing mechanism comprises an oil cylinder connecting base fixedly connected to a frame of an injection molding machine, and a mold opening / closing oil cylinder fixedly connected to the oil cylinder connecting base, wherein the front end of a piston rod of the mold opening / closing oil cylinder is connected with a pushing arm through a screw rod; guide rods are respectively arranged on the two edges of the pushing arm; the two ends of the pushing arm are respectively connected with one end of a connecting rod; the other end of the connecting rod is connected with one end of a pushing rod; the middle and the other end of the pushing rod are respectively connected with elbow rods; and the two ends of the elbow rods are respectively connected with a mold frame assembly. The single-cylinder parallel mold closing mechanism adopts single cylinder to drive left and right mold frames to perform mold opening / closing actions; the mold opening / closing actions are synchronous and stable, so that shoe products do no clamp uppers when molds are closed for bottoming; and shoe lasts are prevented from being collided and damaged when the molds are opened for lifting the shoe lasts, so that the product quality is guaranteed, and the service life of the molds is prolonged.

Description

technical field [0001] The invention relates to a mold clamping mechanism, in particular to a single-cylinder parallel mold clamping mechanism of an injection molding machine for shoes. Background technique [0002] The clamping mechanism is the main part of the injection molding machine and the key device to complete the injection molding process. In the current shoe-making industry, there are many forms of mold clamping mechanisms for injection molding machines, and the parallel mold clamping mechanism usually used in the "disc type shoe upper injection molding machine" is a double-cylinder parallel mold clamping mechanism. Two hydraulic cylinders respectively drive the left and right mold frames to complete the mold opening and closing actions. In actual use, this parallel mold clamping mechanism driven by twin cylinders has the following disadvantages: [0003] One is that the mold opening and closing actions cannot be completely synchronized. During the driving proce...

AI Technical Summary

Problems solved by technology

[0003] One is that the mold opening and closing actions cannot be fully synchronized

During the driving process, due to the damping produced by the left and right oil cylinders and the processing errors of related parts, the mechanism cannot be completely synchronized when the mold opening and closing action is completed, resulting in the mold frame actions on the left and right sides being out of sync.

[0004] Second, it is easy to damage the mold, and the product quality cannot be guaranteed

During the mold closing process, due to the asynchronous movement of the left and right mold frames, mold clamping is easy to occur, resulting in clamping of shoe products, affecting quality and appearance

In the process of mold opening, due to the asynchronous movement of the left and right mold frames, it is easy to damage the quality of the shoe last and shoe products when the mold is opened and the last is lifted.

[0005] Third, it is difficult to adjust, time-consuming and labor-intensive

When the size required for opening and closing the mold changes according to the needs of production, it is necessary to separately debug the mold frames on the left and right sides to make them as synchronous as possible, so the adjustment takes a long time and the effect is not good

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