JPH0649546B2 - Synchronous thread feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a first fixed position engaging means in a first portion of an outer peripheral surface of a yarn feeding drum, which is provided at a corresponding portion of a drive belt. By constructing a proper congruent meshing relationship with the installed second fixed position engaging means, a part of the yarns that presses between the two achieves the purpose of stable yarn feeding with accurate synchronized operation. The present invention relates to a tuning type yarn feeding device.

(2) Conventional Technology As shown in FIG. 11, the conventional yarn feeding device uses a round bar 3 for the feeding drum A.
Are installed side by side on the yarn guide frame S, the belt 9 presses the yarn 9 onto the smooth outer peripheral surface of the feeding drum A, and the friction between the two is used to drive the yarn to drive the yarn. Proceed with the work. or,
On the yarn guide frame S, a ceramic guide hole 8 for feeding and separating the yarn is provided, and the yarn 9 is separately guided to control the attachment / detachment of the belt 2 from the compression range.

Japanese Patent Publication No. 60-23059 discloses a yarn feeding device for a textile machine. This yarn feeding device is provided with a yarn feeding drum and a drive belt, in which protruding portions and concave portions are alternately arranged in the circumferential direction on the outer peripheral portion of the yarn feeding drum, and teeth are provided inside the driving belt. Engage the recesses with the teeth of the drive belt and sandwich the thread between the recesses and the teeth.

Further, Japanese Utility Model Laid-Open No. 56-158454 discloses a yarn supplying or collecting member. This collecting member is
It is equipped with a bottom roller and an apron belt, and a yarn is sandwiched between them to supply or take out.

SUMMARY OF THE INVENTION The biggest drawback of the yarn feeding means such as the yarn feeding device described above is that the yarn supply is unstable. As the number of yarn feedings increases as required, the contact surface between the belt 2 and each of the feeding drums A becomes smaller, and the contact surface between the two does not maintain the sameness. It becomes difficult to maintain stability in which the speed at which the yarn 9 is pressed and driven is always matched. It is difficult to find such a difference state, but there is no means for solving it, so that a situation may occur in which the surface of the woven fabric shows signs of quality deterioration. Regarding this, there is no need for hands to work even among traders, and further, the above-mentioned drawbacks affect the number of thread breaks and work interruptions, resulting in a decrease in efficiency in terms of production. become.

Further, in the one disclosed in Japanese Patent Publication No. 60-23059, the yarn enters between the recess of the yarn feeding drum and the tooth of the drive belt and is driven by the drive belt, so that the yarn is corrugated by the recess and the tooth. It is bent. As a result, there is a problem that the tension of the yarn supplied from the yarn supplying drum tends to become uneven. Further, the yarn that has entered between the recesses and the teeth tends to cause the drive belt to shift axially with respect to the yarn feeding drum, so that there is also a problem that the surface of the yarn that has entered between them tends to become defective due to friction.

Further, in the one disclosed in Japanese Utility Model Laid-Open No. 56-158454, the apron belt is provided with a recessed portion, a cutout portion or a protrusion portion, and the apron belt is pressed against the outer peripheral surface of the bottom roller to prevent friction between them. Since the yarn is supplied by utilizing this, the same problems as those of the yarn feeding device described above occur.

SUMMARY OF THE INVENTION The main object of the present invention is to provide a kind of tunable yarn feeding device, in which the rotational speed of the yarn feeding drum, the driving speed of the driving belt, and the yarn feeding speed are completely combined. In tune with
On the outer peripheral surface of the yarn feeding drum, each yarn is pressed by the same driving belt to run so that the feeding speed and the tension are perfectly matched.

In order to achieve the above-mentioned object, as described in one embodiment of the present invention, a large number of projections or concave portions having an equiangular distribution are formed on the outer peripheral surface of the yarn feeding drum to form a first fixed position. The engaging means, or a concave surface portion (or engaging hole or notch) or a protruding portion is also provided on the corresponding position of the drive belt to serve as the second fixed position engaging means. Achieved synchronized operation by joint drive by mutual meshing,
In addition, the driving speed of the yarn, which the driving belt presses on the outer peripheral surface of the yarn feeding drum, and the driving speed of the driving belt operate in perfect synchronization.

Another object of the present invention is to provide a tunable yarn feeding device in which an elastic member is arranged, and the elastic member is elastically deformed and repelled by the action of an external force so that the yarn to be continued is driven. Corresponding to the pressure of the belt, it shows a larger contact surface and anti-slip property, and by further forming or installing the elastic members of the yarn feeding drum alternately on the protruding part and the concave part, the anti-slip surface And facilitates elastic deformation of the member when the yarn is pressed by the drive belt on the surface of the protrusion of the yarn, and the contact surface between the yarn and the surface of the yarn feeding drum is increased. The anti-slip effect of yarn feeding is increased to achieve stable and accurate yarn feeding.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention provides a yarn feeding frame fixed to a spinning machine main body with a yarn feeding
The drum is installed so as to be rotatable, and the yarn guiding device is installed on the yarn feeding drum so that the yarn guiding device can be moved. The yarn feeding drum has a hard first part on the outer peripheral surface. (1) By providing the fixed position engaging means, the second part of the yarn feeding drum is set so as to receive a part of the entering yarn, and the second part of the yarn feeding drum meshes with the corresponding part of the driving belt. The third part of the feeding drum receives the yarn which does not enter the second part of the yarn feeding drum when the yarn guide device is moved to the third part of the yarn feeding drum by operation. And the second fixed position engaging means is provided on the first portion of the drive belt corresponding to the first portion of the yarn feeding drum, The second portion of the drive belt has a portion of the yarn fed into the second portion of the yarn feeding drum. Sometimes jointly pressing the yarn to achieve yarn feed according to the synchronized operation of the yarn feeding drum and drive belt,
The first fixed-position engaging means of the feeding drum and the second fixed-position engaging means of the drive belt are configured to transmit rotational movement and prevent axial displacement, and the first and second fixed positions thereof. A gist of a tunable yarn feeding device characterized in that a yarn is inserted between the position engaging means and is not driven by a drive belt.

In order to solve the above-mentioned problems, the present invention provides a first fixed position engaging means on the outer peripheral surface first portion of the yarn feeding drum, and uses the second portion as the yarn feeding portion, The first portion of the drive belt, which corresponds to the first portion of the feeding drum, is provided with a second fixed position engaging means that is intermeshing with the first fixed position engaging means of the yarn feeding drum. The feeding drum is driven by the drive belt to rotate at a completely synchronized speed and rotates, and the feeding speed of the yarn is compressed between the second portion of the outer surface of the yarn feeding drum and the second portion of the drive belt. Also, at the same time, the yarns compressed between the same driving belt and the yarn feeding drums by being surely controlled and traveling in perfect synchronism. The feeding work is achieved in perfect synchronization at the synchronized speed, and the disadvantages of feeding speed and tension imbalance caused by the non-coincidence of belt contact surfaces in conventional friction yarn feeding are eliminated. .

Embodiments The above-mentioned and other objects, effects and characteristics of the present invention will be described with reference to the drawings. In each example,
Units that have similar or similar functions are given the same reference number for the purpose of mutual contrast.

The tunable yarn feeder according to the present invention has a basic structure including a yarn feeding drum, a drive belt, a yarn guide frame, a yarn introducing hole, and a yarn introducing hole. However, in order to simplify the description, the yarn guide frame and the yarn lead-out hole portion are omitted in the illustrated example, and the yarn introduction hole portion is also displayed as a symbol.

As a first embodiment of the present invention, as shown in FIGS. 1 and 2, the yarn feeding drum 10 (hereinafter, referred to as
(Drums) is a traditional round
Bar 14, upper lid 12, lower lid 15, transmission shaft 1
In addition to the configuration of 1, a feature of the present invention is to add a cylinder 100 inside the round bar type drum,
In the first portion 101 of the outer peripheral surface, a large number of first fixed position engaging means, such as a large number of protrusions (studs) 13, which are equiangularly distributed, are provided at appropriate positions close to the upper lid 12. The protrusion 13 is formed integrally with the cylinder 100. In the figure, the protrusion 13 is the round bar 1 of the drum 10.
4 between the two bars, that is, the upper portion, that is, the first portion 1 on the outer circumference of the drum
The second fixed position engaging means, for example, the fixed position hole 21 as an engaging hole, which is arranged at the position 01 and corresponds to the first portion biased to the upper part of the drive belt 20, is driven. At that time, the fixed position holes 21 of the drive belt 20 mesh with the protrusions 13 on the circumference of the drum 10 one after another, and the drum 10 and the drive belt 20 rotate in synchronization. Next, as shown in FIG. 2, in the tunable yarn feeding device of the present invention, the yarn 30 is guided by the guide of the yarn guide hole 40 onto the second portion 102 of the drum 10 at the time of yarn feeding and driven. The second portion 22 of the belt 20 is pressed. When the protrusion 13 of the drum first portion 101 sequentially rotates in synchronization with the fixed position hole 21 of the drive belt first portion, the yarn is compressed between the drive belt second portion 22 and the drum second portion 102. 30 inevitably moves in synchronism with the drive belt 20 to achieve stable and accurate yarn feeding. Next, when the yarn does not require feeding or when switching to the depolarizing yarn feed, moving the yarn guide hole 40 downward causes the yarn 30 to be pulled out from the feeding state as shown by a dotted line 40 in the figure. Is released from the pressure position of the second portion of the drive belt, and slides on the third portion 103 of the drum 10,
As indicated by the dotted line in FIG. 2, the yarn 30 is in the state of the yarn feeding stopped or the depolarized yarn feeding.

As a means for simplifying the second embodiment having the structure of the first embodiment, the outer peripheral surface of the drum 10 is formed on the surface 100A as shown in FIG. A plurality of protrusions 13 are provided to engage the transmission of the drive belt 20 in a fixed position in the same manner as shown in FIGS. 1 and 2 to provide the aforementioned tunable yarn fee according to the present invention. Achieve ding.

Next, as a third embodiment, as shown in FIG. 4, the outer peripheral surface of the yarn feeding drum is provided with a tooth-shaped uneven surface 100B.
With the above configuration, and by disposing a large number of projecting protrusions 13 having an equiangular distribution on the first portion of the uneven surface 100B, the same object as in the above-described embodiment can be achieved.

FIG. 5 shows a fourth embodiment of the present invention, in which the protrusion 13A is formed on the first portion of the outer peripheral surface of the yarn feeding drum 10, and the front end portion 130 of the protrusion 13A is formed. Is tapered, the other portion of the drum 10 is formed on the lubrication surface 146, one end of the drive belt 20 corresponding to the first portion of the drum is formed on the cutout 21, and is fitted to the protrusion 13A. While being driven and rotated, the second portion 22 and the drum 10 that do not form the recess of the drive belt 20 are formed.
The yarn is squeezed between the second portion 102 of the outer peripheral surface to achieve a stable and accurate tuned yarn feed.

The creativity and technical means included in the above-described embodiment according to the present invention are represented by the display in FIG. That is, the protrusions 13 are distributed in an equiangular space on the first portion 101 of the outer peripheral surface of the yarn feeding drum, and a part of the protrusions 13 also serves as corresponding fixed-position holes or notches of the drive belt. Achieves synchronized rotation with the yarn feeding drum while meshing or fitting with each other, and the yarn pressed by the drive belt on the outer peripheral surface of the drum advances the feeding in synchronization at the same time, and Achieves fine tuning thread feed.

In addition, as shown in FIG. 7 as a fifth embodiment of the present invention, a protrusion is formed on one surface of the drive belt 20 corresponding to the first portion of the conventionally used round bar type yarn feeding drum 10. 21B and the concave surface portions 210 are alternately arranged at equal intervals, and the gap between the round bars of the drum 10 is just fitted to the protruding portion 21B of the drive belt 20.
0 and the drive belt 20 allow achieving synchronized rotation. This allows the yarn 30 to be fed accurately.

Further, as a means for obtaining a better anti-slip property by increasing the contact surface where the outer peripheral surface of the yarn feeding drum 10 comes into contact with the drive belt 20 and presses the yarn, the second portion 102 of the outer peripheral surface of the drum 10 is provided. The elastic member 50 can also be provided in the. Therefore, a sixth embodiment will be described with reference to FIGS. In this example the yarn
The elastic member 50 is installed on the second portion 102 on the outer peripheral surface of the feeding drum 10, and the elastic member 50 becomes a flat shape at the moment when the drive belt 20 is pressed against the elastic member 50. Since a relatively large pressure contact surface is formed, the contact surface between the yarn 30 and the outer peripheral surface of the drum 10 is also increased, and the slip prevention property is enhanced. Furthermore, as shown in FIGS. 9 and 10, a large number of protrusions 51 and concave portions 52 are alternately arranged on the outer peripheral surface of the elastic member 50,
The outer end surface of the projection 51 serves as the outer peripheral surface of the elastic member 50, and the yarn, the drive belt, and the three contact each other, thereby further improving the stability of the yarn feeding of the yarn feeding drum. You can The operation of the other units is similar to that of the above-mentioned embodiment, and therefore its explanation is omitted.

Regarding the second embodiment of FIG. 3, only the elastic member 50 is added as described above, but other embodiments are also provided with, for example, the second portion of the outer peripheral surface of the drum. A flexible member may be provided, and the effect is exactly the same.
Further, as shown in FIG. 10, when the yarn 30 is guided by the convex surface of the projection 51, the elasticity of the elastic member 50 easily dents in response to the pressure, so that the yarn steadily and closely slips. Since the contact surface is increased by the elastic member 50 that has a flattened shape due to the prevention of the drive belt 20 being compressed, the yarn 30 compressed by the drive belt 20 is increased.
Also, the convex surface of the protrusion 51 is depressed to improve the tightness. Further, since the fixed position hole 21 of the drive belt 20 accurately meshes with the protrusion 13 to drive the drum 10 in synchronism, the yarn 30 is stabilized according to the rotation speed of the drum 10 under the condition that no slip occurs at all. Proceeds yarn feeding to achieve accurate positive yarn feeding.

Next, the specific structure of the present invention will be described with reference to the sixth embodiment. As shown in FIG. 9, the upper half portion 12 of the drum having a large number of protrusions is provided with a large number of concave groove portions 18 in the small diameter portion 111 below the drum portion, and the bearing 114 is provided with the upper half portion 12. It is installed in the central concave tank (not shown). This installed portion just hits the portion where the drive belt 20 is pressed. The elastic member 50 is arranged on the outer peripheral surface of the small diameter portion 111 of the upper half portion 12. A large number of protrusions 57 provided in the inner hole are fitted in the groove 18. A large number of protruding poles 16 installed in the lower half portion 15 are fitted and fixed in holes (not shown) in the upper half portion 12. The elastic member 50 is received and fixed to the upper portion of the third portion 103 of the outer peripheral sliding surface so that the elastic member 50 is stably held between the upper half portion and the lower half portion so as not to slide, and is steadily supported. A tuned yarn feeding drum 10 is formed. As can be seen, the structure of the yarn feeding drum of the present invention is extremely simple, the number of units is small, the installation is simple and convenient for inspection and repair, the rotation operation is light and solid, and the durability is high. The cost is low because it is high.

As described above, in the first fixed position engaging means formed by the first portion of the outer peripheral surface of the yarn feeding drum of the tunable yarn feeder according to the present invention, the protrusions or studs (or concave surfaces) distributed in the equiangular space are formed. Section) and a drive belt having a fixed-position hole or a notch (or a protrusion) in the corresponding second fixed-position engaging means.
The yarn under pressure in the second part between them achieved the purpose of stable yarn feeding with the driving belt exactly in sync speed. This greatly contributes to the improvement of the production efficiency of the spinning machine and the quality of the product.

In addition, the yarn feeding in the above-mentioned embodiment
The description of the facilities such as the first fixed position engaging means on the outer peripheral surface of the drum and the second fixed position engaging means of the drive belt is given only for a part of the specific embodiments of the present invention. It does not limit the scope of the claims of the present invention, and all the applications, modifications, additions, substitutions, and alterations relating to the invention are included in the scope of the claims of the present invention.

EFFECTS OF THE INVENTION According to the present invention, the first fixed position engagement means of the yarn feeding drum and the second fixed position engagement means of the drive belt transmit rotational movement and prevent axial displacement. In addition, since the yarn is inserted between the first and second fixed position engaging means and is not driven by the drive belt, the second yarn feeding drum is provided so that the yarn can be fed in a good condition. The shape of the part can be set. Thereby, for example, the yarn tension is made uniform and the yarn is fed, and the yarn feeding
The synchronized operation of the drum and the drive belt can be performed well. Furthermore, the friction of the drive belt in the axial direction against the yarn can be prevented, and the surface of the yarn can be kept good.

[Brief description of drawings]

FIG. 1 is a front view showing a tuning type yarn feeder according to a first embodiment of the present invention. FIG. 2 is a front view showing a usage state of the tunable yarn feeding device shown in FIG. FIG. 3 is a front view showing a tuning type yarn feeder according to a second embodiment of the present invention. FIG. 4 is a front view and a cross sectional view showing a tunable yarn feeding device according to a third embodiment of the present invention. FIG. 5 is a perspective view showing a tunable yarn feeding device according to a fourth embodiment of the present invention. FIG. 6 is a cross-sectional view showing the state of total contained pressure of the yarn in the fourth embodiment. FIG. 7 is a front view and a partial perspective view showing a tunable yarn feeding device according to a fifth embodiment of the present invention. FIG. 8 is a front view showing a tuning type yarn feeder according to a sixth embodiment of the present invention. FIG. 9 is an exploded perspective view of FIG. 10 is a cross-sectional view taken along the line 10-10 of FIG. FIG. 11 is a front view of a conventional round bar type yarn feeding drum. Explanation of code 10 …… Yarn feeding drum 11 …… Transmission shaft 12 …… Upper lid 13 …… Projection portion 14 …… Round bar 15 …… Lower lid 20 …… Driving belt 21 …… Position hole 30… … Yarn 40 …… Yarn guide hole 100 …… Cylinder

Claims (13)

[Claims] 1. A yarn feed frame fixed to a spinning machine main body,
Install the yarn feeding drum so that it can rotate, and install the yarn guiding device on the yarn feeding drum so that it can move.
The feeding drum is provided with a hard first fixed position engaging means on a first portion of the outer peripheral surface thereof, so that the feeding drum and the corresponding portion of the driving belt are intermeshed with each other.
The second part of the drum is set to receive a part of the entering yarn, and the third part of the yarn feeding drum is moved to the third part of the yarn feeding drum by the operation of the yarn guide device. The first portion of the drive belt corresponding to the first portion of the yarn feeding drum is set to receive the yarn that does not fit in the second portion of the yarn feeding drum.
A second fixed position engaging means is provided in the portion so as to mesh with the first portion of the yarn feeding drum and the first fixed position engaging means, and the second portion of the drive belt is a part of the yarn. When the yarn is fed into the second part of the yarn feeding drum, the yarn is jointly squeezed to achieve the yarn feeding according to the synchronized operation of the yarn feeding drum and the drive belt, and the yarn feeding drum 1
The fixed position engagement means and the second fixed position engagement means of the drive belt are configured to transmit rotational movement and prevent axial displacement, and between the first and second fixed position engagement means. A tunable yarn feeding device characterized in that a yarn is contained and is not driven by a drive belt. 2. The first fixed position engagement means comprises a plurality of engagement projection surfaces, and the second fixed position engagement means comprises a plurality of engagement concave surfaces. The tunable yarn feeding device according to the above-mentioned item 1, characterized in that the interlocking relationship is formed with the engaging projection surface of the means. 3. The first fixed position engaging means comprises a plurality of protrusions, and the second fixed position engaging means comprises a plurality of engagement holes to form an interengaging relationship with the protrusions. The tunable yarn feeding device according to the above item 1, characterized in that 4. A plurality of protrusions arranged between a plurality of recessed grooves installed on the second portion of the outer peripheral surface of the yarn feeding drum, part of which when the joint operation proceeds corresponding to the drive belt. The tunable yarn feeder according to the above-mentioned item 1, wherein the yarn is received to achieve the yarn feeding. 5. A tunable yarn feeder according to claim 1, wherein the outer periphery of the second portion of the yarn feeding drum is constituted by a substantially circular solid surface. 6. The tuned type according to claim 1, wherein slippage during a yarn feeding process can be prevented by forming a rough surface on the outer periphery of the second portion of the yarn feeding drum. Thread feeder. 7. The tunable yarn feeding device according to claim 1, wherein the outer peripheral surface of the second portion of the yarn feeding drum is made of an elastic member. 8. The tunable yarn feeder according to claim 1, wherein the outer peripheral surface of the second portion of the yarn feeding drum includes a main body structure having a large number of concave grooves and protrusions. 9. A yarn feeding drum comprising a plurality of projecting portions as first fixed position engaging means between a plurality of round bars arranged on the outer peripheral surface of the yarn feeding drum. The tunable yarn feeding device according to the above-mentioned item 1, characterized in that it projects from the outer peripheral surface of the drum. 10. The tunable yarn feeder according to claim 3, wherein the tip of each of the individual protrusions provided is formed in a cone shape. 11. The tunable yarn feeding device according to claim 3, wherein an engaging hole formed in the drive belt is provided at an upper portion in a longitudinal direction of the drive belt in a driving direction. 12. The tunable yarn feeder according to claim 3, wherein the protrusion is provided at an upper end position on the outer peripheral surface of the yarn feeding drum. 13. The first and second fixed position engaging means are yarns.
In the axial direction of the feeding drum, the joint engagement rotation proceeds in synchronization with each other, so that the inner surface of the drive belt and the outer peripheral surface of the yarn feeding drum can be aligned at any yarn feeding time. In the tunable yarn feeding device according to the above-mentioned item 1, the surface-to-surface contact with the yarn can be maintained substantially in balance.