CN203033551U

CN203033551U - Floating roll feedback type yarn tension control device of one-step warper

Info

Publication number: CN203033551U
Application number: CN2012207194428U
Authority: CN
Inventors: 窦其勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2013-07-03
Anticipated expiration: 2022-12-24

Abstract

The utility model relates to a floating roll feedback type yarn tension control device of a one-step warper. The floating roll feedback type yarn tension control device comprises a framework, a circuit and gas circuit control system, a spinning shaft transmission mechanism and a yarn traction mechanism, and is characterized in that a tension feedback mechanism is arranged between the spinning shaft transmission mechanism and the yarn traction mechanism. A floating roll feedback mechanism is arranged between the spinning shaft transmission mechanism and the yarn traction mechanism, so that a traction roll variable-frequency motor of the yarn traction mechanism drives a traction roll to rotate at constant speed according to set speed; a frequency converter of a spinning shaft variable-frequency motor of the spinning shaft transmission mechanism automatically adjusts rotation speed of the spinning shaft variable-frequency motor according to swing conditions of a floating roll, and accordingly, two variable-frequency motors are synchronous in rotation speed. Further, yarn tension can be adjusted by adjusting air pressure of a floating roll cylinder. Force of the cylinder is kept constant at certain air pressure, so that yarn tension is kept constant, and yarn tension can be constantly and precisely controlled in large range.

Description

The dancer reaction type yarn tension control device of disposable warping machine

Technical field

The utility model relates to a kind of warping machine, especially a kind of dancer reaction type yarn tension control device of disposable warping machine.

Background technology

Existing low and middle-grade disposable warping machine mainly adopts a beam of a loom motor and electromagnetic power brake or spring to control the yarn tension of warping, and its advantage is simple in structure, and cost is low; Its shortcoming is: the tension force control accuracy is low, maximum tension little (less than 1000N), and also inner ring and outer ring tension force are inconsistent;

Though the disposable warping machine of existing top grade also is to adopt double-motor vector converter technology to control the yarn tension of warping, does not have tension feedback mechanism, the output torque by two motors concerns to control yarn tension.Its advantage is that structure is simple relatively, and cost is low; Its shortcoming is: the one, play the foundation as yet of moment moment relation, winding motor is starting earlier, and traction electric machine is just starting after obtaining the torque signals of winding motor, so form the hightension moment of impact when starting, easily yarn is pulled, when requiring hour very difficult control of yarn tension; Cause transmission parts moment overload simultaneously, shortened the transmission part life, the machine-spoiled rate height; The 2nd, the tension fluctuation that roller spare Mismachining tolerance and driving error etc. cause, the adjustment that is reacted to motor speed from the moment relationship change has a time course, and because tension fluctuation is amplified in this hysteresis, so tension fluctuation is big, and the tension force control accuracy is low; The 3rd, realize permanent tension force, the moment relation will change thereupon when the beam of a loom diameter increases, and does not also realize the accurate change of moment relation now fully, and is normally constant, so go out yarn phenomenon tight inside but loose outside.

The utility model content

The purpose of this utility model is to provide a kind of above-mentioned shortcoming that overcomes, make the yarn tension control accuracy height of warping, the tension adjustment scope is big, the beam of a loom inner ring is constant consistent with the outer ring yarn tension, rolling density is even, satisfies the dancer reaction type yarn tension control device of a kind of disposable warping machine that many kinds warping of permanent tension force requires;

For achieving the above object, the technical scheme that the utility model adopts is: this device comprises: frame, circuit and air-path control system, the beam of a loom transmission device, the yarn trailer coupling is characterized in that: lead between the mechanism at beam of a loom transmission device and yarn, be provided with tension feedback mechanism, this mechanism comprises: dancer, dancer arm, dancer pivot shaft, the pivot shaft torque arm, connecting rod, synchronizing shaft torque arm, synchronizing shaft, the dancer cylinder that is connected with the gas circuit control setup, the rotating potentiometer that is electrically connected with circuit control system, potentiometer adapter plate, adapter plate anchor shaft; Two dancer cylinders are the mounting hole by the rear portion respectively, be assemblied in rotationally on the jack-post set on the frame, the rod end of two dancer cylinders, link the lower end two synchronizing shaft torque arm respectively, the middle part of two synchronizing shaft torque arm is contained in the two ends of synchronizing shaft respectively, and synchronizing shaft is contained on the frame by the rolling bearing units seat; One end of two connecting rods, link the upper end two synchronizing shaft torque arm respectively, the other end hinge joint of two connecting rods is in the upper end of two pivot shaft torque arm, the lower end of two pivot shaft torque arm is contained in the outer end of two dancer pivot shafts respectively, the inner that is contained in the dancer pivot shaft respectively of two dancer arms, the dancer pivot shaft is contained on the frame by bearing seat, and two of dancer fits over respectively on the other end of two dancer arms, thereupon swing;

The axle head of rotating potentiometer is connected with an end of a dancer pivot shaft, and rotating potentiometer is contained on the potentiometer adapter plate, and the potentiometer adapter plate is contained on the frame by the adapter plate anchor shaft.

The utility model beneficial effect compared with prior art:

Because leading at beam of a loom transmission device and yarn, this device employing increased the dancer feedback mechanism between the mechanism, the nip rolls variable-frequency motor that makes yarn lead mechanism drives the nip rolls constant speed according to setting speed and rotates, the frequency converter of the beam of a loom variable-frequency motor of beam of a loom transmission device is regulated the rotating speed of beam of a loom variable-frequency motor automatically according to the swing situation of dancer, dancer is to lower swing when beam of a loom variable-frequency motor rotating speed is fast, the electric signal that circuit control system transmits according to rotating potentiometer, by frequency converter the beam of a loom variable-frequency motor is slowed down, vice versa, thereby realize the harmonious of two variable-frequency motor rotating speeds; And the size of yarn tension is regulated by the air pressure size of dancer cylinder, when air pressure size one regularly, though the piston rod of cylinder has flexiblely during the dancer swing, the strength of cylinder remains unchanged, so the yarn tension size also remains unchanged; Start the tension fluctuation of moment and the tension fluctuation that roller spare Mismachining tolerance, driving error etc. cause, eliminate automatically by the swing of dancer, thereby make the steady no impact phenomenon of starting, the constant tension fluctuation is little in the warping process; Like this that the control of the control of speed of beaming and tension force is relatively independent, thus make control more reliable and more stable, yarn tension size adjustment scope is big, and yarn tension control accuracy height is realized on a large scale, the accurate control of permanent tension force yarn tension; Make the beam of a loom inner ring constant consistent with the outer ring yarn tension, rolling density is even, has satisfied many kinds warping requirement of permanent tension force.

Description of drawings:

Fig. 1 is front view of the present utility model;

Fig. 2 be among Fig. 1 A-A to view;

Fig. 3 be among Fig. 1 B-B to view;

Fig. 4 is the birds-eye view of Fig. 1;

Fig. 5 unloads the front view that prior art structure among Fig. 1 shows the utility model structure separately;

Among the figure:

1. sprocket wheel two, and 2. sprocket wheel one, 3. the dancer cylinder, 4. connecting rod, 5. pivot shaft torque arm, 6. synchronizing shaft torque arm, 7. the long roller arm of meter is 8. counted long roller cylinder, and 9. belt wheel two, 10. dancer, 11. nip rolls, 12. long rollers, 13. transmission shaft three, 14. sprocket wheels six, 15. frames, 16. sprocket wheel five, 17. belt wheels three, 18. belt wheels four, 19. the nip rolls variable-frequency motor, 20. synchronizing shafts, 21. beams of a loom, 22. transmission shaft two, 23. beam of a loom joints, 24. beam of a loom pivot shafts, 25. the beam of a loom variable-frequency motor, 26. belt wheels, one, 27. transmission shaft one, 28. bearing seat, 29. dancer pivot shafts, 30. dancer arms, 31. sprocket wheel four, 32. sprocket wheels three, 33. adapter plate anchor shafts, 34. the potentiometer adapter plate, 35. rotating potentiometers, 36. yarns.

The specific embodiment:

Describe the utility model in detail below in conjunction with accompanying drawing:

The dancer reaction type yarn tension control device of disposable warping machine, shown in Fig. 1-4, this device comprises: frame 15, circuit and air-path control system, beam of a loom transmission device, yarn trailer coupling, tension feedback mechanism;

The circuit of this machine, air-path control system are robot control system(RCS)s commonly used at present; In the warping process, pass through Frequency Converter Control two variable-frequency motors by PLC---yarn tension and the speed of beaming of beam of a loom variable-frequency motor 25 and nip rolls variable-frequency motor 19 control warpings, the size of yarn tension is regulated by the air pressure size of dancer cylinder 3;

The beam of a loom transmission device: this mechanism comprises, the beam of a loom variable-frequency motor 25 that is electrically connected with circuit control system, beam of a loom transmission belt wheel 1, belt wheel 29, transmission shaft 1, sprocket wheel 1, sprocket wheel 21, transmission shaft 2 22, bearing seat 28, sprocket wheel 3 32, sprocket wheel 4 31, beam of a loom pivot shaft 24, beam of a loom joint 23, beam of a loom 21, yarn 36; Beam of a loom variable-frequency motor 25 is contained on the frame 15, and belt wheel 1 is contained on the axle of beam of a loom variable-frequency motor 25, and belt wheel 1 rotates with motor shaft; Belt wheel 1 rotates by V-belt driving pulley 29; Sprocket wheel 1 and belt wheel 29 are contained in the two ends of transmission shaft 1 respectively, and both rotate together; Transmission shaft 1 is contained on the frame 15 by rolling bearing units, and is rotatable; Sprocket wheel 1 rotates by chain drive sprocket wheel 21; Sprocket wheel 3 32 and sprocket wheel 21 all are contained in the transmission 2 22, and both rotate together; Transmission shaft 2 22 is contained on the frame by bearing seat 28, and is rotatable; Sprocket wheel 3 32 rotates by chain drive sprocket wheel 4 31, and shaft adapter 23 and sprocket wheel 4 31 all are contained on the beam of a loom bolster 24, and both rotate together; Shaft adapter 23 links together with beam of a loom 21 during warping, drives beam of a loom 21 and rotates, and realizes the driving of 25 pairs of beams of a loom 21 of beam of a loom variable-frequency motor, with yarn 36 around to beam of a loom 21;

The yarn trailer coupling: this mechanism comprises, the nip rolls variable-frequency motor 19 that is electrically connected with circuit control system, nip rolls transmission belt wheel 3 17, belt wheel 4 18, transmission shaft 3 13, sprocket wheel 5 16, sprocket wheel 6 14, nip rolls 11, count long roller 12, the long roller cylinder 8 of the meter that is connected with the gas circuit control setup, the long roller arm 7 of meter; Nip rolls variable-frequency motor 19 is contained on the frame 15, and belt wheel 3 17 is contained on the axle of nip rolls variable-frequency motor 19, rotates with motor shaft; Belt wheel 3 17 rotates by V-belt driving pulley 4 18; Sprocket wheel 5 16 and belt wheel 4 18 all are contained on the transmission shaft 3 13, and both rotate together; Transmission shaft 3 13 is contained on the frame 15 by rolling bearing units, and is rotatable; Sprocket wheel 5 16 rotates by chain drive sprocket wheel 6 14, and sprocket wheel 6 14 is contained on the spindle nose of nip rolls 11 1 ends, drives nip rolls 11 and rotates, and realizes the driving of 19 pairs of nip rolls 11 of nip rolls variable-frequency motor; Count long roller cylinder 8 by the mounting hole at rear portion, be assemblied in rotationally on the jack-post set on the frame; Count the rod end of long roller cylinder 8 with the end hinge joint of counting long roller arm 7 together, count the other end of long roller arm 7 by mounting hole, be assemblied in rotationally on the set jack-post of frame 15 medial surfaces; Count long roller 12 and be contained in the middle part of counting long roller arm 7, the piston rod of counting long roller cylinder 8 stretches out or when withdrawing, drive long roller arm 7 swings of meter, make the long roller 12 of meter leave or press to nip rolls 11, the long roller 12 of meter is pressed to nip rolls 11 during warping, yarn 36 is clipped central, thereby make no relative slip between yarn 36 and the nip rolls 11, the long roller 12 of meter lifts and leaves nip rolls 11 when drawing yarn, conveniently draws yarn;

Tension feedback mechanism, this mechanism comprises: dancer 10, dancer arm 30, dancer pivot shaft 29, pivot shaft torque arm 5, connecting rod 4, synchronizing shaft torque arm 6, synchronizing shaft 20, the dancer cylinder 3 that is connected with the gas circuit control setup, the rotating potentiometer 35 that is electrically connected with circuit control system, potentiometer adapter plate 34, adapter plate anchor shaft 33; Two dancer cylinders 3 are the mounting hole by the rear portion respectively, be assemblied in rotationally on the jack-post set on the frame 15, the rod end of two dancer cylinders 3, link the lower end two synchronizing shaft torque arm 6 respectively, the middle part of two synchronizing shaft torque arm 6 is separately fixed at the two ends of synchronizing shaft 20, dress up an integral body with synchronizing shaft (20), synchronizing shaft 20 is contained on the frame 15 by the rolling bearing units seat, two by two synchronizing shaft torque arm 6 drives synchronizing shaft 20 positive and negative rotations, makes two synchronizing shaft torque arm 6 realize swing synchronously by synchronizing shaft 20; One end of two connecting rods 4, link the upper end two synchronizing shaft torque arm 6 respectively, the other end hinge joint of two connecting rods 4 is in the upper end of two pivot shaft torque arm 5, the lower end of two pivot shaft torque arm 5 is contained in the outer end of two dancer pivot shafts 29 respectively, the inner that is contained in dancer pivot shaft 29 respectively of two dancer arms 30; Pivot shaft torque arm 5, dancer pivot shaft 29 and dancer arm 30 are also dressed up an integral body, can be together around 29 swings of dancer pivot shaft; Dancer pivot shaft 29 is contained on the frame 15 by bearing seat, and two of dancer 10 fits over respectively on the other end of two dancer arms 30, thereupon swing; Like this, the strength of dancer cylinder 3 passes on the dancer 10 by synchronizing shaft torque arm 6, connecting rod 4, pivot shaft torque arm 5, dancer pivot shaft 29, dancer arm 30, the control yarn tension; Because two synchronizing shaft torque arm 6 are rotated synchronously, after above a series of transmissions, still keep dancer 10 two ends to swing synchronously;

The axle head of rotating potentiometer 35 is connected with the right-hand member of a dancer pivot shaft 29 on right side, and rotating potentiometer 35 is contained on the potentiometer adapter plate 34, and potentiometer adapter plate 34 is contained on the frame 15 by adapter plate anchor shaft 33; Dancer 10 is when 29 swings of dancer pivot shaft, and dancer pivot shaft 29 rotates with regard to the axle of driven rotary potentiometer 35, and rotating potentiometer 35 is just passed to circuit control system with dancer 10 swaying directions and oscillating quantity, coordinates the rotating speed of two variable-frequency motors;

Yarn trend: as shown in Figure 3, guide the right-hand of the long roller 12 of meter into from the top of counting long roller 12 from the yarn 36 that creel draws, guide the top of nip rolls 11 again into from the below of counting long roller 12, again around the below to left and the nip rolls 11 of nip rolls 11, guide the upper left side of dancer 10 again into from the lower right of nip rolls 11, walk around the right-hand of the top of dancer 10 and dancer 10, guide the upper left side of beam of a loom 21 into from dancer 10 lower rights at last, around to beam of a loom;

The course of action of dancer: according to the yarn trend as can be known, the tension force of yarn 36 pulls down dancer 10, dancer 10 just pulls down an end of dancer arm 30, because pivot shaft torque arm 5, dancer pivot shaft 29 and dancer arm 30 are dressed up an integral body, strength just passes in the pivot shaft torque arm 5, pivot shaft torque arm 5 is passed to the upper end of synchronizing shaft torque arm 6 by connecting rod 4 with strength again, passes to dancer cylinder 3 from the lower end of synchronizing shaft torque arm 6 again; The thrust of the tension force of yarn 36 and dancer cylinder 3 forms a pair of equilibrium relation like this; When the strength of dancer cylinder 3 changes, equilibrium relation is broken, dancer 10 begins swing, the swing of dancer 10, also drive the correlated parts motion by same path, the rotation of dancer pivot shaft 29 is rotated with regard to the axle of driven rotary potentiometer 35, rotating potentiometer 35 is just passed to circuit control system with dancer 10 swaying directions and oscillating quantity, coordinate the rotating speed of two variable-frequency motors, make dancer 10 remain on midway location as far as possible, thereby change the tension force of yarn 36, set up new equilibrium relation, the tension force that makes yarn 36 keeps a kind of equilibrium relation of correspondence with the thrust of dancer cylinder 3, realizes regulating by the strength that changes dancer cylinder 3 tension force of yarn 36; When causing dancer 10 swings owing to other factors, the signal that circuit control system transmits according to rotating potentiometer 35 too comes the rotating speed of automatic synchronization two variable-frequency motors;

Because two synchronizing shaft torque arm 6 and synchronizing shaft 20 are dressed up an integral body, make the position of two synchronizing shaft torque arm 6 always be consistent, make the pivot shaft torque arm 5, dancer pivot shaft 29 at two ends of dancer 10 and the position of two integral body that dancer arm 30 is formed also always be consistent by connecting rod 4, thereby swing synchronously at the two ends of realizing dancer 10; The effect of synchronizing shaft guarantees that just the two ends of dancer 10 swing synchronously;

As mentioned above, the control of speed of beaming be by two independently variable-frequency motor control the yarn that send of the coiling of beam of a loom 21 and nip rolls 11 respectively, two variable-frequency motors are all by Frequency Converter Control speed, and wherein the frequency converter of nip rolls variable-frequency motor 19 is controlled by PLC, realize that yarn speed is constant; The frequency converter of beam of a loom variable-frequency motor 25 is regulated the rotating speed of beam of a loom variable-frequency motor 25 automatically according to the swing situation of dancer 10, dancer is to lower swing when beam of a loom variable-frequency motor 25 rotating speeds are fast, the electric signal that circuit control system transmits according to rotating potentiometer 35, by frequency converter beam of a loom variable-frequency motor 25 is slowed down, vice versa, thereby realize the harmonious of two variable-frequency motor rotating speeds; And the size of yarn 36 tension force is regulated by the air pressure size of dancer cylinder 3, when one timing of air pressure size, though the piston rod of dancer cylinder 3 has flexiblely during dancer 10 swing, the strength of dancer cylinder 3 remains unchanged, so yarn 36 tension force sizes also remain unchanged; When requiring yarn 36 tension force very big, just can reliably realize as long as air pressure heightened or dancer cylinder 3 changed greatly, when requiring yarn 36 tension force very little, as long as air pressure turned down or dancer cylinder 3 changed and just can realize reliably no matter realization is that small tension receiving coil or hightension can both reliably be controlled accurately for a short time; Start the tension fluctuation of moment and the tension fluctuation that roller spare Mismachining tolerance, driving error etc. cause, eliminate automatically by the swing of dancer 10, thereby make the steady no impact phenomenon of starting, the constant tension fluctuation is little in the warping process;

In sum, this device is relatively independent with tension force control with speed control, and two variable-frequency motors all adopt the speed control principle, coordinate the rotating speed of two variable-frequency motors by dancer 10 feedback signals; Regulate yarn 36 tension force sizes by the strength size of dancer cylinder 3; Automatically eliminate tension fluctuation by the swing of dancer 10; Thereby make control reliable and stable, starting is no impact phenomenon steadily, and yarn 36 tension force size adjustment scopes are big, and yarn tension control accuracy height is realized on a large scale, the accurate yarn tension of controlling of permanent tension force; Make disposable warping machine satisfy the warping requirement of high speed, permanent tension force, many kinds.

Claims

1. the dancer reaction type yarn tension control device of a disposable warping machine, comprise: frame (15), circuit and air-path control system, the beam of a loom transmission device, the yarn trailer coupling is characterized in that: lead between the mechanism at beam of a loom transmission device and yarn, be provided with tension feedback mechanism, this mechanism comprises: dancer (10), dancer arm (30), dancer pivot shaft (29), pivot shaft torque arm (5), connecting rod (4), synchronizing shaft torque arm (6), synchronizing shaft (20), the dancer cylinder (3) that is connected with the gas circuit control setup, the rotating potentiometer that is electrically connected with circuit control system (35), potentiometer adapter plate (34), adapter plate anchor shaft (33); Two dancer cylinders (3) are the mounting hole by the rear portion respectively, being assemblied in frame (15) rotationally goes up on the set jack-post, the rod end of two dancer cylinders (3), link the lower end in two synchronizing shaft torque arm (6) respectively, the middle part of two synchronizing shaft torque arm (6) is contained in the two ends of synchronizing shaft (20) respectively, and synchronizing shaft (20) is contained on the frame (15) by the rolling bearing units seat; One end of two connecting rods (4), link the upper end in two synchronizing shaft torque arm (6) respectively, the other end hinge joint of two connecting rods (4) is in the upper end of two pivot shaft torque arm (5), the lower end of two pivot shaft torque arm (5) is contained in the outer end of two dancer pivot shafts (29) respectively, (30) the inners that are contained in dancer pivot shaft (29) respectively of two dancer arms, dancer pivot shaft (29) is contained on the frame (15) by bearing seat, two of dancer (10) fits over respectively on the other end of two dancer arms (30), thereupon swing;

The axle head of rotating potentiometer (35) is connected with an end of a dancer pivot shaft (29), and rotating potentiometer (35) is contained on the potentiometer adapter plate (34), and potentiometer adapter plate (34) is contained on the frame (15) by adapter plate anchor shaft (33).