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System for controlling a shutter of a plastic material injection system

A technology of plastic material and injection system, applied in the system field of stopper, can solve problems such as reducing the closing precision, and achieve the effect of improving the actuation efficiency and easy to change the actuation energy

Pending Publication Date: 2021-08-06
瑞尼浦斯欧洲公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such systems are subject to considerable thermal expansion, which tends to reduce closure accuracy

Method used

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  • System for controlling a shutter of a plastic material injection system
  • System for controlling a shutter of a plastic material injection system
  • System for controlling a shutter of a plastic material injection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] In a manner known per se, the injection system comprises a stop slidably arranged in the plastic material injection nozzle.

[0065] Nozzles and stoppers are known per se and will not be described in detail. Regarding the general structure of the injection system, those skilled in the art may refer to the description provided in document EP 1 196 274, except for the description concerning the actuation of the stop (document EP 1 196 274 describes hydraulic actuation), document EP 1 196 The description provided in 274 applies to this invention.

[0066] In general, a system (actuator) for controlling a stop consists of a rotary electric motor and a mechanism linking the output shaft of the motor to said stop so that in the closed position of the nozzle and the maximum The stop is slidably actuated between open positions.

[0067] figure 1 is a partial perspective view of the injection system without the actuator.

[0068] The injection system includes a mold (not sho...

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PUM

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Abstract

The invention relates to a system for controlling a shutter (110) slidably arranged in a plastic material injection nozzle (11), comprising a rotary electric motor (M) and a mechanism adapted to couple said motor (M) to the shutter in order to cause it to slide between a position for closing the nozzle and a position of maximum opening of the nozzle, characterized in that said mechanism comprises: an eccentric (21) integral with an output shaft (20) of the motor so as to be driven in rotation by said output shaft, comprising a crank pin (22) parallel to the output shaft, but not coaxial with said shaft (20), a slide (23) adapted to be secured to one end of the shutter (110), and a connecting rod (25), a first end of which is articulated on the crank pin (22) of the eccentric (21) and a second end is articulated on an axle (25b) of the slide (23) such that the rotation of the eccentric causes sliding of the oscillating shutter between the closing position and the maximum opening position.

Description

technical field [0001] The invention relates to a system for controlling an obturator slidably arranged in a plastics material injection nozzle. Background technique [0002] "Hot runner" type injection systems usually include: [0003] - a distributor delimiting a plastic material distribution channel and comprising a thermoplastic material output, said distributor comprising means enabling the temperature of said distributor and of the material transiting in the distribution channel to be maintained At temperatures above the limiting temperature at which the material transitions to a fluid state, [0004] - an injection nozzle defining at least a portion of a relay channel, the input of which is fluidly connected to the output of the distribution channel, and the output of which essentially opens into the molding cavity, [0005] - a stop mounted to slide longitudinally inside the transit channel and occupy its closed and open position alternately, [0006] - Control me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/28
CPCB29C45/281B29C2045/2824B29C2045/2834B29C45/76B29C45/77B29C45/78B29C45/80B29C2045/2865B29C45/7613B29C45/23B29C2945/76006B29C2945/7604B29C2945/76083B29C2945/7621B29C2945/76254B29C2945/76568B29C2945/76688B29C2945/76859
Inventor E·德里切
Owner 瑞尼浦斯欧洲公司