CN201483856U - Mechanical structure of tension control system of plastic film compounding machine - Google Patents

Abstract

The utility model discloses a mechanical structure of the tension control system of a compounding machine. In the technical scheme, a floating roller type (Dancer. Arm) tension detection and tension control is used to substitute the original mechanical structure of the control system, and the tension floating roller system is added based on the original tension sensor. The utility model improves the tension control performance, and achieves the high control accuracy. Moreover, since the floating roller type tension detection device is an energy storage structure, the utility model has good absorbing and buffering effect on the large-scale tension fluctuation under the redundancy of the structure, and simultaneously weakens the influence of changes in the material roll eccentricity (ellipse) and speed on the tension.

Description

Plastic sheeting compounding machine tension control system frame for movement

Technical field:

The utility model relates to packages printing industry equipment, is a kind of compounding machine tension control system frame for movement specifically.

Background technology:

Compounding machine is a visual plant in the packages printing industry, process characteristic according to the dry method compounding machine, tension force control to equipment requires comparatively strict, at film when equipment moves, must control face and can not produce breakage, wrinkling and stretcher strain etc., also will guarantee that phenomenons such as the lax or volume heart of film is wrinkling can not take place the finished product (rolling) that produces simultaneously because of tension variation.The control of the tension force of dry method compounding machine requires control system can control plastic sheeting running tension on equipment enduringly, and this control all must be remained valid to any speed of service of machine, comprises the acceleration, deceleration of machine and at the uniform velocity.Even under the situation of stopping in emergency, it also has the ability to guarantee that film does not produce a bit breakage, wrinkling and stretcher strain.

Existing dry compound machine operation principle is as shown in Figure 1:

In this system, the reel of film or paper enters the gluing carry-over pinch rolls by the unwinding rack of first unreeling structure, carries out heat treated then in compound baking oven, carry out compoundly through doubling roller with other layer of material (by second unreeling structure control) again, carry out rolling by rolling-up mechanism at last.

Existing Tension Control of Dry Compound Machine block diagram such as Fig. 2, shown in Figure 3:

Wherein the unwinding tension system adopts NIRECO TC640 tension controller, and the operator is according to wide cut, thickness, technological requirement and the operating experience of raw material, and the height of manually adjusting the tension controller output voltage is controlled the output torque of blowing magnetic powder brake device.

The rolling tension system adopts NIRECO TC440 tension controller, directly measure the actual tension value of film by tension pick-up, then tension data is converted to tension signal and feed back to tension controller, by this signal and the predefined tension value contrast of controller, calculate control signal, go to control automatically DC MOTOR CONTROL plate unit, and export by DC MOTOR CONTROL plate unit controls d.c. motor voltage, the actual tension value is equated, to reach the tension stability purpose with default tension value.

Existing tension control system pluses and minuses show:

Advantage: the manufacturing process maturation, cost is low, and control is simple.

Shortcoming: unwinding tension control is coarse, and rolling tension force control accuracy is low, and response speed is slow, can not absorb the peak value of tension force, and the acceleration and deceleration of machinery are difficult to handle, and is not easy to realize to switch at a high speed characteristics such as volume.Therefore, when the tension control system that is in poised state was subjected to stronger interference, system had little time to react moment, and the range value of tension variation can be bigger on the strip, and it is unfavorable that tension force control is reentered poised state as early as possible.

In addition, the magnetic powder brake device of material drain system and the direct current motor system of material-receiving system are through long-play, mechanical performance and electric parameter all can not reach the situation of ordinary production, and unit consumption, equipment failure rate occupy height always, and the tension system of equipment can not satisfy present production requirement.

The utility model content:

For solving the problem that prior art exists, the utility model provides a kind of compounding machine tension control system frame for movement, the tension force control mode that adopts floating roller type (Dancer Arm) tension force to detect substitutes original control system, utilizes original tension pick-up, increases tension force dancer system.

The technical solution adopted in the utility model:

Plastic sheeting compounding machine tension control system frame for movement, comprise first unreeling structure, gluing carry-over pinch rolls and gluing motor, baking oven, second unreeling structure, doubling roller and applying motor, rolling-up mechanism, first unreeling structure, gluing carry-over pinch rolls and gluing motor, baking oven, second unreeling structure, doubling roller and applying motor, rolling-up mechanism be order arrangement successively backward in the past; It is characterized in that:

Described first unreeling structure is positioned at the baking oven front end, be by first unwinding rack, first precision potentiator, first fork, first dancer, the first accurate cylinder, the one MB25B tension pick-up is formed, above first unwinding rack, has a frame fixing point M1, frame fixing point M1 top is equipped with first precision potentiator, there is first fork upper end to be movably installed in the swing of fixing point M1 place, the first fork lower end is connected with first dancer, top, first fork upper end leans against on first precision potentiator, and first fork middle part is fixedly attached to the piston end of the first accurate cylinder;

Described second unreeling structure is positioned at the baking oven rear end, be by second unwinding rack, second precision potentiator, second fork, second dancer, the second accurate cylinder, the 2nd MB25B tension pick-up is formed, above second unwinding rack, has a frame fixing point M2, frame fixing point M2 top is equipped with second precision potentiator, there is second fork upper end to be movably installed in the swing of fixing point M2 place, the second fork lower end is connected with second dancer, top, second fork upper end leans against on second precision potentiator, and second fork middle part is fixedly attached to the piston end of the second accurate cylinder;

Described rolling-up mechanism is positioned at the second unreeling structure rear end, form by rolling frame, rolling precision potentiator, rolling fork, rolling dancer, the accurate cylinder of rolling, rolling MB25B tension pick-up, above the rolling frame, has a frame fixing point M3, frame fixing point M3 top is equipped with the rolling precision potentiator, there is rolling fork upper end to be movably installed in the swing of fixing point M3 place, rolling fork lower end is connected with the rolling dancer, top, rolling fork upper end leans against on the rolling precision potentiator, and rolling fork middle part is fixedly attached to the piston end of the accurate cylinder of rolling.

Advantage of the present utility model:

The compounding machine tension control system that the utility model provides, the tension force control performance improves, the control accuracy height, and because the floating roller type tension detecting apparatus itself is a kind of energy storing structure, utilize the heavy surplus effect of himself, large-scale tension force saltus step there is good absorption cushioning effect, also can weakens simultaneously the influence of the off-centre (ellipse) of material volume and velocity variations tension force.

Description of drawings:

Fig. 1 is the old-fashioned tension control system fundamental diagram of dry compound machine;

Fig. 2 is the utility model compounding machine tension control system fundamental diagram;

Fig. 3 is the dancer structural representation;

Fig. 4 is the tension value before the system reform;

Fig. 5 is the tension value after the system reform;

Fig. 6 is the unit consumption figure before and after the system reform.

The specific embodiment:

The compounding machine tension control system, comprise first unreeling structure, gluing carry-over pinch rolls and gluing motor 4, baking oven 5, second unreeling structure, doubling roller and applying motor 9, rolling-up mechanism: first unreeling structure, gluing carry-over pinch rolls and gluing motor 4, baking oven 5, second unreeling structure, doubling roller and applying motor 9, rolling-up mechanism be order arrangement successively backward in the past;

Described first unreeling structure is positioned at the baking oven front end, be by first unwinding rack 1, first precision potentiator 14, first fork 13, first dancer 15, the first accurate cylinder 16, the one MB25B tension pick-up 3 is formed, above first unwinding rack, has a frame fixing point M1 (2), frame fixing point M1 (2) top is equipped with first precision potentiator 14, there are first fork, 13 upper ends to be movably installed in fixing point M1 (2) and locate swing, first fork, 13 lower ends are connected with first dancer 15, top, first fork, 13 upper end leans against on first precision potentiator 14, and first fork, 13 middle parts are fixedly attached to the piston end of the first accurate cylinder 16;

Described second unreeling structure is positioned at the baking oven rear end, be by second unwinding rack 6, second precision potentiator, second fork, second dancer, the second accurate cylinder, the 2nd MB25B tension pick-up 8 is formed, above second unwinding rack, has a frame fixing point M2, frame fixing point M2 top is equipped with second precision potentiator, there is second fork upper end to be movably installed in the swing of fixing point M2 place, the second fork lower end is connected with second dancer 7, top, second fork upper end leans against on second precision potentiator, and second fork middle part is fixedly attached to the piston end of the second accurate cylinder;

Described rolling-up mechanism is positioned at the second unreeling structure rear end, be by rolling frame 12, the rolling precision potentiator, the rolling fork, the rolling dancer, the accurate cylinder of rolling, rolling MB25B tension pick-up 10 is formed, above the rolling frame, has a frame fixing point M3, frame fixing point M3 top is equipped with the rolling precision potentiator, there is rolling fork upper end to be movably installed in the swing of fixing point M3 place, rolling fork lower end is connected with rolling dancer 11, top, rolling fork upper end leans against on the rolling precision potentiator, and rolling fork middle part is fixedly attached to the piston end of the accurate cylinder of rolling.

Claims (1)

1. plastic sheeting compounding machine tension control system frame for movement, comprise first unreeling structure, gluing carry-over pinch rolls and gluing motor, baking oven, second unreeling structure, doubling roller and applying motor, rolling-up mechanism, first unreeling structure, gluing carry-over pinch rolls and gluing motor, baking oven, second unreeling structure, doubling roller and applying motor, rolling-up mechanism be order arrangement successively backward in the past; It is characterized in that:

Described first unreeling structure is positioned at the baking oven front end, be by first unwinding rack, first precision potentiator, first fork, first dancer, the first accurate cylinder, the one MB25B tension pick-up is formed, above first unwinding rack, has a frame fixing point M1, frame fixing point M1 top is equipped with first precision potentiator, there is first fork upper end to be movably installed in the swing of fixing point M1 place, the first fork lower end is connected with first dancer, top, first fork upper end leans against on first precision potentiator, and first fork middle part is fixedly attached to the piston end of the first accurate cylinder;

Described second unreeling structure is positioned at the baking oven rear end, be by second unwinding rack, second precision potentiator, second fork, second dancer, the second accurate cylinder, the 2nd MB25B tension pick-up is formed, above second unwinding rack, has a frame fixing point M2, frame fixing point M2 top is equipped with second precision potentiator, there is second fork upper end to be movably installed in the swing of fixing point M2 place, the second fork lower end is connected with second dancer, top, second fork upper end leans against on second precision potentiator, and second fork middle part is fixedly attached to the piston end of the second accurate cylinder;

Described rolling-up mechanism is positioned at the second unreeling structure rear end, form by rolling frame, rolling precision potentiator, rolling fork, rolling dancer, the accurate cylinder of rolling, rolling MB25B tension pick-up, above the rolling frame, has a frame fixing point M3, frame fixing point M3 top is equipped with the rolling precision potentiator, there is rolling fork upper end to be movably installed in the swing of fixing point M3 place, rolling fork lower end is connected with the rolling dancer, top, rolling fork upper end leans against on the rolling precision potentiator, and rolling fork middle part is fixedly attached to the piston end of the accurate cylinder of rolling.

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