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Method for controlling novel open-head pinch roll and apparatus thereof

A control method and technology of pinch rollers, which are applied in the directions of transportation and packaging, coiling strips, and thin material handling, etc., can solve the problems of large unit equipment and complicated control, etc.

Inactive Publication Date: 2008-12-10
CHINA NAT HEAVY MACHINERY RES INSTCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the unit must also be equipped with tension pinch rollers to pinch the strip, which makes the unit equipment huge and complicated to control.

Method used

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  • Method for controlling novel open-head pinch roll and apparatus thereof
  • Method for controlling novel open-head pinch roll and apparatus thereof
  • Method for controlling novel open-head pinch roll and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The following is the calculation of the motor torque for six different operating states of the pinch roller at the beginning.

[0046] 1. When the unit adopts tension uncoiling, the upper and lower pinch rollers are driven by hydraulic cylinders and pressed as pinch rollers. In order to achieve smooth unwinding, the pinch roller must generate a pinch tension of 6KN.

[0047] figure 1 is an analysis diagram of the torque applied to the roller in this case.

[0048] In the figure: I. Strip on uncoiler reel; II. Lower pinch roll; III. Upper pinch roll.

[0049] As shown in the figure, when the unit is threading the belt, the electric torque M on one roller d for:

[0050] m d ≥PR / 2+Jε z +(T+G)df d / 2(1)

[0051] In the formula: M d - electric torque on one roller, N m;

[0052] T-the pressing force applied by the oil cylinder between the upper and lower rollers, N;

[0053] G-the gravity of the upper roller, N;

[0054] d-the equivalent diameter of the bearing,...

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Abstract

The invention belongs to a piece of equipment of a continuous finishing unit in a recoiling unit, namely a novel control method and device for pinch rollers at the opening. Its characteristic is: it adopts double-roller transmission. When the unit is wearing the belt, the upper roller lifts and presses the oil cylinder to drive the synchronous mechanism to drive the upper pinch roller to press down. At this time, the upper pinch roller and the lower pinch roller are pressed tightly. Driven by the gear box, the tension uncoiling is realized, and the upper and lower rollers act as pinch rollers; when the unit is in linkage operation, the upper roller lifting cylinder drives the synchronous mechanism to drive the upper pinch roller to lift, and the upper pinch roller and the lower pinch roller open , The upper pinch roller or the lower pinch roller play a guiding role to realize the upper uncoiling or lower uncoiling of the uncoiler. It also has the function of upper uncoiling or lower uncoiling, as well as multiple functions of guide roller and pinch roller, and eliminates the occurrence of scratches on the strip surface, and also makes the unit compact in structure and easy to control.

Description

Technical field [0001] The invention belongs to a piece of equipment of a continuous finishing unit in a recoiling unit, namely a novel control method and device for pinch rollers at the opening. Background technique [0002] At present, the recoiling unit usually adopts the upper uncoiling or the lower uncoiling method, and is driven by a single roller. In order to ensure that there is no slippage between the guide roller and the strip during the operation of the unit, the guide roller must have a large enough wrap angle to form a large enough friction force between the guide roller and the strip to overcome the speed-up and quick-stop of the unit. And the inertial force caused by the moment of inertia of the guide roller during the emergency braking process, so as to avoid the phenomenon of slippage between the guide roller and the strip and scratch the strip. At the same time, the unit must also be provided with tension pinch rollers to pinch the strip, which makes the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65H23/16B65H16/02
Inventor 张勇安景群平万保平卢进莉李智学
Owner CHINA NAT HEAVY MACHINERY RES INSTCO
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