CN2303014Y

CN2303014Y - Improved elastic thread feeding device

Info

Publication number: CN2303014Y
Application number: CN 97202904
Authority: CN
Inventors: 吴泗沧
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-03
Filing date: 1997-04-03
Publication date: 1999-01-06
Anticipated expiration: 2007-04-03

Abstract

The utility model relates to an improved elastic yarn thread feeding device, which is mainly characterized in that an auxiliary yarn feeding roller wheel is additionally arranged between the output yarn end of a main yarn feeding roller wheel and a tension detect stopping device to prolong the contacting length of the elastic yarn thread and the outer peripheral surface of the auxiliary yarn feeding roller wheel, ensure that the elastic yarn thread can be driven by the yarn feeding roller wheel, and realize the aim of the stable yarn feeding.

Description

Improved elastic yarn yarn-feeding device

The utility model relates to a kind of improved elastic yarn yarn-feeding device, refers to a kind of yarn-feeding device that is useful in knitting machine especially, and it carries a side of elastomeric yarn running roller that one auxiliary yarn-feeding roller wheel is set, with the stable yarn-feeding device that send the elastomeric yarn of yarn.

Elastomeric yarn is owing to have the character of the yarn of rubbery or other elastic reaction, difficulty on general inelastic yarn possesses skills in yarn-feeding process, because yarn all has tension force when being sent yarn, and elastomeric yarn basically when sending yarn can not to the generation progradation, making it to be able to decide uniformly under the tension force stable confession yarn volume is drawn out of and is primary problem, because the rubber-like cause of elastomeric yarn own, can not be under the static state at the yarn volume and be extracted out, so in the yarn-feeding process of elastomeric yarn, must have driving capability in order to the running roller itself of supporting the elastomeric yarn volume, make elastomeric yarn be drawn out of send yarn when, the elastomeric yarn of make suring is not subjected to any tension force effect in fact, and in the stability of sending the appropriate to the occasion maintenance yarn tension of yarn, this point send the yarn operation most important for elastomeric yarn.

For further understanding the details that elasticity is sent the yarn operation, now send the yarn sketch that it is described in conjunction with the elasticity of Fig. 1, as seen from the figure, elastomeric yarn volume Y is placed in to have two home roll wheel R1 that drive power, on the R2, the weight of yarns Y 1 all adds all in two home roll wheel R1, on the R2, when sending yarn home roll wheel drive, the yarns Y 1 of yarn volume Y just is sent by the side of running roller R2 successively, S is admitted in the weaving of weaving loom intracardiac continuously through the tension force perceptron, weight owing to yarn volume Y is about about 400 g in the past, elastomeric yarn Y1 is by being held in running roller R1, the gravity effect on the surface of R2 is little, and yarn still can be stable smoothly send yarn.But cost of labor significantly improves recently, meet artificial shortage again, the dealer is the transition that overcome objective environment, the weight of elastomeric yarn volume have to be increased to 1000 g by 400 g, to organize elastomeric yarn volume under the situation be two home rolls wheels when driving this, and following problem has just taken place:

1, after yarn volume weight significantly increases, friction force between elastomeric yarn and drive roller wheel increases, the peripheral distance with the center of yarn volume widens, if it is careless slightly that yarn twists in the winding process, just very easily make upper strata yarn circle be absorbed in lower floor even more in the yarn circle of lower floor, make the yarns Y 1 can not be very smooth in the drawn work operation of running roller R2 and yarn cigarette synapsis F, occasionally pause and transition in rhythm or melody is arranged and make yarn that unusual variation take place to cause and send the yarn instability, the cloth cover homogeneous quality of weaving cotton cloth generates the influence of deterioration.

2, because after the increase of yarn coil diameter, the yarn volume is changed the frequency of using and is reduced, be shelved on the warehouse, the time that (refers to by the warehouse between board) in the storage and transport process is also all more in the past for long, around here the lubricant of yarn (yarn oil) the volatilization time longer, and cause separation property difficulty comparatively between yarn and running roller, also can make the space F between yarn volume Y and running roller R often have a bit of yarn to be attached on the running roller, the subsequent segments yarn is formed bloat shape and do not driven, cause the unsettled phenomenon of yarn tension by running roller.

3, owing to the preceding paragraph reason, after adding that yarn volume weight improves, the chance that elastomeric yarn the is attached to running roller shape of healing increases, again because of the contact area of running roller R2 and yarns Y 1 only reach running roller periphery length three minutes one a little less than, running roller R2 is weakened for it to the yarn ability of sending of yarns Y 1, cause and send the yarn disadvantage, cause the woven fabric quality of elastomeric yarn and go from bad to worse, therefore, the yarn ability of sending that how to strengthen running roller just becomes the important topic that the elastomeric yarn yarn-feeding device improves.

Therefore, the inventor is in order to improve the above-mentioned shortcoming of commonly using the elasticity yarn-feeding device, and provide a kind of improved elastic yarn yarn-feeding device, between yarn-feeding roller wheel and boundary member, increase by an auxiliary yarn-feeding roller wheel, to make elastomeric yarn under the contact length that is not subjected under the progradation to increase with auxiliary running roller periphery, make yarn be reached the stable purpose of sending yarn smoothly.

Another purpose of the present utility model is to provide a kind of elastomeric yarn yarn-feeding device of improvement, the length that its auxiliary running roller contacts with yarn at least greater than the contact length of home roll wheel more than three times, to guarantee yarn stable smoothly yarn that send in yarn-feeding process.

The utility model is in order to reach above-mentioned purpose, effect and characteristics, its technological means of taking is included in an auxiliary yarn-feeding roller wheel is set between two main yarn-feeding roller wheels and the boundary member, and make its diameter be equal to or greater than main yarn-feeding roller wheel at least, making the length of elastomeric yarn winding on auxiliary running roller is more than three times of main yarn-feeding roller wheel at least, commonly uses the shortcoming of elastomeric yarn yarn-feeding device with certain improvement.

Graphic simple declaration:

Fig. 1 is a simple and easy schematic diagram of commonly using the elastomeric yarn yarn-feeding device;

Fig. 2 is the simple and easy schematic diagram of the utility model elastomeric yarn yarn-feeding device;

Fig. 3 is the simple and easy schematic diagram of the utility model elastomeric yarn yarn-feeding device transmission mechanism.

Now consult Fig. 2 and Fig. 3 simultaneously with regard to the explanation of improved elastic yarn yarn-feeding device of the present utility model structure, as shown in Figure 3, the utility model comprises that a support 20, is located at the fixed part 29 of support one end, support 20 can be fixed on the ring (not shown) on the frame of weaving loom; One is located at the driving mechanism of base inner, comprise the belt pulley 28 that is located at the support end face, the bevel reduction gear set (not shown) of the main wheel 28A lower end of belt pulley, one is the main drive gear set 26 that bevel reduction gear set drove, and is located at the driven wheel 21A and the 22A of two main yarn-

feeding roller wheels

21 and 22 of below; One tension force that is located at the support below detects boundary member 30.Improved characteristics of the present utility model is, the one yarn-feeding roller wheel of these two main yarn-feeding roller wheels and tension force detect an auxiliary yarn-feeding roller wheel 23 are set between the boundary member, this yarn-feeding roller wheel 23 is via main driven wheel 26, the driving of first idle pulley 24 and second idle pulley 25 and rotating, by among the figure as can be known, first and second idle pulley diameter and the number of teeth are identical, but direction of rotation, thereby make the linear velocity and the main driven wheel 26 of auxiliary yarn-feeding roller wheel 23 synchronous, also synchronous simultaneously with the linear velocity of two main yarn-feeding roller wheels, make the yarn that send of auxiliary yarn-feeding roller wheel not generate any progradation to elastomeric yarn, with strengthen two main yarn feeding wheels to elastomeric yarn send the yarn ability, and reach the smooth and stable yarn purpose of sending.

What should illustrate around here is, the transmission of the 22 mat odontoid belts that the power resources of auxiliary yarn-feeding roller wheel 23 also can be directly one of be taken turns by two main yarn-feeding rollers also belongs to feasible, then can omit need not for two

idle pulleys

24,25, so how transmission of the power resources of auxiliary yarn-feeding roller wheel, unimportant to this case, the important techniques means are that the linear velocity of auxiliary yarn-feeding roller wheel should be identical with main yarn-feeding roller wheel, and its external diameter will equal main yarn-feeding roller wheel at least, takes turns greater than main yarn-feeding roller so that yarns Y is centered around the periphery length of auxiliary running roller.Through inventor's result of the test, the diameter of auxiliary running roller is being good greater than 3 times of main yarn-feeding roller wheel diameters.

In sum, auxiliary yarn-feeding roller wheel of the present utility model can be rolled up elastomeric yarn weight and increase the back is easy to be attached to the yarn-feeding roller wheel in yarn-feeding process shortcoming and improved, make elastomeric yarn be able to be issued to the smoothly stable yarn purpose of sending, the improvement of quality of textile products is had much value in the situation of not extending.

Claims

1, a kind of improved elastic yarn yarn-feeding device comprises:

One support;

One is located at the fixed part of support one end;

One is located at the driving mechanism of casing inside;

Send two main yarn-feeding roller wheels of yarn;

One tension force of being located at the casing below detects boundary member;

It is characterized by: set up an auxiliary yarn-feeding roller wheel between one of these two yarn-feeding roller wheels yarn yarn-feeding roller wheel and the boundary member.

2, improved elastic yarn yarn-feeding device according to claim 1 is characterized in that, the circumference of this auxiliary yarn-feeding roller wheel is equal to or greater than the circumferential length of two main yarn-feeding roller wheels.

3, improved elastic yarn yarn-feeding device according to claim 1 is characterized in that, the linear resonance surface velocity of this auxiliary yarn-feeding roller wheel and two main yarn-feeding roller wheels are synchronously.