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High-precision automatic control device for extruder output weight per unit length

An automatic control device and unit length technology, applied in the field of high-precision automatic control devices, can solve problems such as increased cost, difficult maintenance and debugging, and poor control accuracy, so as to reduce manufacturing costs and failure rates, facilitate maintenance and debugging, and improve control accuracy Effect

Inactive Publication Date: 2011-12-14
王根乐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision automatic control device for extruder discharge unit length weight to solve the complex structure, high cost, difficult maintenance and debugging, poor control accuracy, high cost and high failure rate in the prior art. The problem

Method used

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  • High-precision automatic control device for extruder output weight per unit length
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  • High-precision automatic control device for extruder output weight per unit length

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Embodiment Construction

[0018] see figure 1 , the present invention is a high-precision control device that automatically controls the weight per unit length of the extruder. This embodiment includes a controller 18 and a weighing device. The input end of the controller 18 is connected to the weighing device. The controller 18 The output end of the extruder 15 is connected with the driving motor 14 of the extruding screw or the driving motor of the traction roller 16.

[0019] Described weighing device comprises raw material hopper 1, frame 2, weighing hopper 7 and feed connecting pipe 8, and raw material hopper 1 and feeding connecting pipe 8 are installed on the upper end and the lower end of frame 2 respectively, in this raw material hopper 1 The lower outlet is provided with a gate 3 which is connected with a gate drive 4 . The weighing bucket 7 is installed between the raw material bucket 1 and the feed connecting pipe 8, one side of the weighing bucket 7 is connected to one end of a lever 11, ...

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Abstract

A high-precision automatic control device for the weight per unit length of extruder output. The input end of the controller is connected to the weighing device, and the output end of the controller is connected to the drive motor of the extrusion screw of the extruder or the drive of the traction roller. motor connection. The weighing device includes a raw material hopper, a frame and a weighing hopper. The raw material hopper is installed on the upper end of the frame, and a gate is installed at the outlet of the lower end of the raw material hopper; the weighing hopper is installed under the raw material hopper, and one side of the weighing hopper is connected to the One end of a lever is connected, and the other end of the lever is equipped with a fixed counterweight. The fulcrum of the lever is hinged on the frame, and a lower proximity switch is installed under the fixed counterweight; The movable counterweight is vertically slidably supported on a counterweight bracket, and an upper proximity switch is arranged below the movable counterweight; the gate, the upper proximity switch and the lower proximity switch are connected to the controller respectively. The advantages are: the structure is simplified, the cost is reduced, the control principle is simple, and the control precision is improved.

Description

technical field [0001] The invention relates to a high-precision automatic control device for the weight per unit length of extruder discharge, which is mainly used for controlling the length of discharge on film blowing machines, tube pulling machines, wire and cable machines, plastic winding machines and spinning (rod) machines , The uniformity of thickness is controlled. Background technique [0002] A basic method for controlling the uniformity of the discharge of the extruder in the prior art is to use a balance type weighing device to measure and calculate the feed rate (that is, the amount of raw material entering the extruder per unit time), and then Control the rotation speed of the extruding screw or the pulling roller of the extruder according to the feeding speed, so that the feeding speed is inversely proportional to the rotating speed of the extrusion screw, or directly proportional to the rotating speed of the pulling roller, so as to keep the film thickness u...

Claims

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Application Information

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IPC IPC(8): B29C47/92B29C47/70B29C48/395B29C48/92
CPCB29C48/92B29C48/395B29C2948/92142B29C2948/9218B29C2948/92438B29C2948/92638B29C2948/92676B29C2948/92828B29C2948/92923B29B7/60B29B7/728
Inventor 王根乐
Owner 王根乐
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