Template of injection molding machine

Abstract

An injection molding machine template, at least including a code template for mold installation, an upper hinge seat and a lower hinge seat located on the back of the code template, and guide seats distributed with the four corners of the code template. The flange on the surface and the back of the code template are provided with a continuous and closed back rib, and the guide seat is connected to the back rib; there is also a diagonal rib with an angle between the upper hinge seat, the lower hinge seat and the code template. There is also a back plate connected between the upper hinge seat and the lower hinge seat; the lateral stress area of ​​the template is concentrated in the middle, and the longitudinal mold clamping force is transmitted to the middle part of the mold through the upper and lower hinge seats, which greatly improves the quality of the template and the mold. Reduce or avoid the bending deformation of the template and the mold, improve the service life of the template and the mold, improve the qualified rate of the product, improve the controllability of the template movement, and help realize high-precision mold protection; at the same time, ensure that the template has Sufficient rigidity, and relatively less material.

Description

technical field [0001] The invention relates to an accessory of an injection molding machine, in particular to a template of an injection molding machine. Background technique [0002] In industrial production, injection molding is mostly used to make plastic products with a certain shape. [0003] In the existing injection molding machines, the mold clamping mechanism is used to provide mold clamping force and ejection force for the mold. The existing mechanical hinged mold clamping system is mainly composed of a fixed platen, a movable platen, a tail plate, a hinge and a guide column. The formwork is an important part of the clamping mechanism, and its deformation directly affects the plastic product. Quality and mold life. [0004] At present, in the hinged mold clamping system, the movable platen is usually designed as Figure 1a , 1b The horizontal "U"-shaped structure shown is to meet the assembly and force requirements of the mechanism. The force conditions are as ...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of structure is that the clamping force transmitted by the machine hinge to the mold will finally act on the two ends of the template and the mold, resulting in large bending deformation of the template and mold after being stressed, which will cause flash defects in plastic products. At the same time, it also has a great impact on the service life of the template and the mold; when using a mold with poor rigidity (such as a PET preform mold), the above-mentioned defects are particularly prominent, and it is even impossible to guarantee that the product is qualified, which seriously affects the life of the mold and reduces the quality of the finished product. pass rate, and increased production costs

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