Mould closing device for plastic forming machine

Abstract

The invention discloses a mould closing device for a plastic forming machine. The mould closing device comprises a first mould plate and a second mould plate which are arranged on a rack, wherein the first mould plate is connected with a mould closing oil cylinder, at least one pair of clamping sleeve drive oil cylinders are arranged at two sides of the first mould plate, each clamping sleeve drive oil cylinder is connected with a clamping sleeve connecting device, clamping head drive oil cylinders in one-to-one correspondence with the clamping sleeve drive oil cylinders are arranged on the second mould plate, and clamping head connecting devices matched with the clamping sleeve connecting devices are arranged on the clamping head drive oil cylinders. In a mould closing process, under the action of the clamping sleeve drive oil cylinders and the clamping head drive oil cylinders, the clamping sleeve connecting devices and the clamping head connecting devices are matched and connected to provide a uniform and stable mould locking pressure for mould closing, and the mould closing oil cylinder can provide no mould closing force or a little mould locking force, so that product quality can be ensured while the load of the mould closing oil cylinder is reduced. The mould closing oil cylinder with small diameter can be adopted, and thus the mould closing speed and the production efficiency are improved.

Description

technical field [0001] The invention relates to a plastic molding machine, in particular to a mold clamping device matched with the plastic molding machine. Background technique [0002] The traditional mold clamping machine has the following disadvantages: 1. In order to ensure sufficient mold clamping force, it must be equipped with a mold clamping cylinder with a relatively large diameter, and the large mold clamping cylinder brings large mold clamping force while the oil pump flow rate is constant. In some cases, the mold clamping speed will be seriously slowed down, and the low mold clamping speed restricts the production efficiency of the plastic molding machine; 2. When producing large-scale plastic hollow molding products, a mold clamping cylinder may have insufficient clamping force The phenomenon, which leads to the phenomenon of mold expansion, the product produced in this way has a poor molding effect at the parting line and is easy to break. Contents of the in...

AI Technical Summary

Problems solved by technology

[0002] The traditional mold clamping machine has the following disadvantages: 1. In order to ensure sufficient mold clamping force, it must be equipped with a mold clamping cylinder with a relatively large diameter, and the large mold clamping cylinder brings large mold clamping force while the oil pump flow rate is constant. In some cases, the mold clamping speed will be seriously slowed down, and the low mold clamping speed restricts the production efficiency of the plastic molding machine; 2. When producing large-scale plastic hollow molding products, a mold clamping cylinder may have insufficient clamping force The phenomenon, which leads to the phenomenon of mold expansion, the product produced in this way has a poor molding effect at the clamping line and is easy to break

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