Mold adjusting and locking device of plastic injection molding machine

Abstract

The invention discloses a mold adjusting and locking device of a plastic injection molding machine, and relates to a direct-pressing gear linkage mold adjusting and locking device suitable for a plastic injection molding machine. The device mainly consists of a fixed template, a movable template, a rear template, a pull rod, a toggle rod mechanism, a die assembly cylinder and a mold adjusting andlocking device, wherein the mold adjusting and locking device consists of a mold locking cylinder, a mold adjusting nut pad I, a mold adjusting nut pad II, a mold adjusting gland, a strut, a mold adjusting big gear ring, a bearing, a small shaft and a power unit. Compared with the prior art, the mold adjusting and locking functions are organically combined, and the toggle rod mechanism is reserved, so 'slow-fast-slow' motion characteristics and force amplification effect are ensured to be realized when a mold is moved; because the mold locking cylinder is integrated on the mold adjusting device, poor mold locking precision of the toggle rod mechanism is avoided by direct mold locking of the mold locking cylinder; and the mold locking force has high repetition precision, and mold locking is stable and reliable. The technology is suitable for a new product, and is also suitable for processing and reforming the conventional injection molding machine.

Description

technical field [0001] The invention relates to a mold adjusting and locking device, in particular to a direct pressure gear linkage mold adjusting and locking device applicable to plastic injection molding machines. Background technique [0002] The mold adjustment and clamping device is one of the important parts of the plastic injection molding machine. Its function is to adjust the position of the movable platen to make the injection molding machine adapt to molds of different thicknesses; to make the mold close to generate elastic deformation of the system to achieve the clamping force and lock the mold. [0003] The most common mold adjustment device for plastic injection molding machines is the gear linkage mold adjustment device. For the clamping device, the most commonly used are the three-plate toggle type and the two-plate direct pressure type. [0004] The three-plate toggle clamping mechanism drives the cross head of the toggle mechanism through the mold clampi...

AI Technical Summary

Problems solved by technology

However, the pressure and speed required for the cylinder when moving the mold must be set in multiple stages according to the process requirements, and it does not have the force amplification function

For the typical clamping block clamping mechanism, there is a clamping block action before the mold is locked, which not only has a complicated structure, but also prolongs the cycle period and reduces the working efficiency.

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