CN113445195A

CN113445195A - Yarn feeder with adjustable yarn feeding speed

Info

Publication number: CN113445195A
Application number: CN202110811091.7A
Authority: CN
Inventors: 陈利; 赵世波; 张一帆; 焦亚男; 陈小明
Original assignee: Tianjin Polytechnic University
Current assignee: Tianjin Polytechnic University
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-09-28
Anticipated expiration: 2041-07-19
Also published as: CN113445195B

Abstract

The invention discloses a yarn feeder with adjustable yarn feeding speed, which comprises an end screw, a bobbin, a driven wheel cover, a bottom plate, a driven wheel, a driving wheel, a mandrel, a coil spring, a friction plate, an embedded block and a locking screw, wherein the end screw is connected with the bobbin; one end of the mandrel is fixed on the bottom plate, and the other end of the mandrel is fixed with an end screw; the driving wheel is positioned in the bottom plate and is rotatably arranged on the mandrel; the spool is rotationally connected with the mandrel; one end of the spool is limited by an end screw, and the other end of the spool is fixedly connected with the driven wheel cover; the driven wheel cover is positioned on the outer side of the driven wheel and is fixedly connected with the driven wheel; the driven wheel is rotatably arranged on the mandrel; the coil spring is arranged in the driven wheel, one end of the coil spring is fixedly connected with the driven wheel, and the other end of the coil spring is fixedly connected with the driving wheel; a plurality of embedded blocks are fixed on the bottom plate, and the embedded blocks are provided with internal threads; the tail end of the locking screw is provided with a friction plate; the locking screw is matched with the internal thread of the embedded block, and the friction plate at the tail end can be contacted with the driving wheel. The invention can manually adjust the yarn feeding tension and the yarn feeding speed.

Description

Yarn feeder with adjustable yarn feeding speed

Technical Field

The invention relates to the technical field of spinning, in particular to a yarn feeder with adjustable yarn feeding speed.

Background

The realization of good unwinding and yarn feeding of the fiber bundle is the first step in the preparation of the preform, and the continuous and stable yarn feeding is beneficial to the forming and weaving of the preform. At present, yarn feeders are various in types and commonly used in knitting equipment, and a motor and a corresponding transmission mechanism are needed to be matched with a common yarn feeder, so that the structure of the yarn feeder is too complex; the traditional yarn feeder has the functions of storing yarn and preventing knotting, and does not emphasize the stability of yarn feeding per se. The document No. 201710741329.7 discloses an automatic yarn feeder, in which a driving device is a brushless dc motor with an outer rotor, a rotor is provided on a stator shaft, and the yarn feeder is driven by the rotor to realize a yarn feeding function, but the manual adjustability of the yarn feeding speed and the axial fixation of the yarn feeding bobbin are not considered, which is the first step of yarn feeding tension control.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to solve the technical problem of providing a yarn feeder with adjustable yarn feeding speed.

The invention provides a yarn feeder with adjustable yarn feeding speed, which is characterized by comprising an end screw, a bobbin, a driven wheel cover, a bottom plate, a driven wheel, a driving wheel, a mandrel, a coil spring, a friction plate, an insert block and a locking screw, wherein the end screw is connected with the bobbin;

one end of the mandrel is fixed on the bottom plate, and the other end of the mandrel is fixed with an end screw; the driving wheel is positioned in the bottom plate and is rotatably arranged on the mandrel; the spool is rotationally connected with the mandrel; one end of the spool is limited by an end screw, and the other end of the spool is fixedly connected with the driven wheel cover; the driven wheel cover is positioned on the outer side of the driven wheel and is fixedly connected with the driven wheel; the driven wheel is rotatably arranged on the mandrel; the coil spring is arranged in the driven wheel, one end of the coil spring is fixedly connected with the driven wheel, and the other end of the coil spring is fixedly connected with the driving wheel; a plurality of embedded blocks are fixed on the bottom plate, and the embedded blocks are provided with internal threads; the tail end of the locking screw is provided with a friction plate; the locking screw is matched with the internal thread of the embedded block, and the friction plate at the tail end can be contacted with the driving wheel.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention manually controls the rotating speed of the driving wheel by controlling the screwing-in degree of the locking screw, realizes manual adjustment of yarn feeding tension and yarn feeding speed, and does not need a motor to control yarn feeding.

(2) The invention has simple structure, light weight, convenience and small volume, and belongs to a miniature yarn feeder; the device has the advantages of quick assembly, strong adaptability, strong operability and strong adjustability; the method is beneficial to the stable and continuous actual production requirement, and is suitable for weaving high-performance fiber preforms such as carbon fibers.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a front elevational view of the overall construction of the present invention with the spool, driven wheel cover and base plate removed;

FIG. 4 is a partial perspective view of FIG. 3 of the present invention;

FIG. 5 is another perspective view of the present invention from a perspective partially in accordance with FIG. 3;

FIG. 6 is a perspective view of the spool of the present invention;

FIG. 7 is a perspective view of the driven wheel cover of the present invention;

FIG. 8 is another angular perspective view of the driven wheel cover of the present invention;

FIG. 9 is a perspective view of the driven wheel of the present invention;

FIG. 10 is a schematic view of a coil spring of the present invention;

fig. 11 is a perspective view of the drive pulley of the present invention.

In the figure, an end screw 1, a bobbin 2, a driven wheel cover 3, a bottom plate 4, a driven wheel 5, a driving wheel 6, a fixing screw 7, a mandrel 8, a coil spring 9, a friction felt 10, a friction plate 11, an insert block 12, a locking screw 13, a groove 201, a first lug 301, a second lug 302 and a slot 501.

Detailed Description

Specific examples of the present invention are given below. The specific examples are only intended to illustrate the invention in further detail and do not limit the scope of protection of the claims of the present application.

The invention provides a yarn feeder with adjustable yarn feeding speed (called yarn feeder for short), which is characterized by comprising an end screw 1, a bobbin 2, a driven wheel cover 3, a bottom plate 4, a driven wheel 5, a driving wheel 6, a fixing screw 7, a mandrel 8, a coil spring 9, a friction plate 11, an embedded block 12 and a locking screw 13;

one end of the mandrel 8 is fixed on the bottom plate 4 through a fixing screw 7, and the other end of the mandrel is fixed with an end screw 1; the driving wheel 6 is positioned in the bottom plate 4 and is rotatably arranged on the mandrel 8 through a bearing; the bobbin 2 is nested outside the mandrel 8 and is rotationally connected with the mandrel 8 through a shaft sleeve; one end of the spool 2 is limited by an end screw 1, and the other end is fixedly connected with a driven wheel cover 3; the driven wheel cover 3 is positioned on the outer side of the driven wheel 5 and is fixedly connected with the driven wheel 5; the driven wheel 5 is rotatably arranged on the mandrel 8 through a bearing; the coil spring 9 is arranged in the driven wheel 5, one end of the coil spring is fixedly connected with the driven wheel 5, and the other end of the coil spring is fixedly connected with the driving wheel 6; a plurality of the embedded blocks 12 are fixed on the bottom plate 4, and the embedded blocks 12 are provided with internal threads; the tail end of the locking screw 13 is provided with a friction plate 11; the locking screw 13 passes through the insert 12 and is matched with the internal thread of the insert 12, and the friction plate 11 at the tail end can be contacted with the driving wheel 6.

Preferably, a groove 201 is opened on the outer surface of one end of the bobbin 2; a first bump 301 is arranged on the outer surface of one end of the driven wheel cover 3; the groove 201 is matched with the first bump 301 to realize the detachable splicing fixed connection of the spool 2 and the driven wheel cover 3 and realize the synchronous movement of the spool 2 and the driven wheel cover.

Preferably, both ends of the bobbin 2 are circular plates, and a groove 201 is formed on the outer surface of one circular plate.

Preferably, the inner surface of the driven wheel cover 3 is circumferentially provided with a second bump 302; the outer surface of the driven wheel 5 is provided with a slot 501 in the circumferential direction; the second projection 302 is matched with the slot 501 to realize the detachable insertion and fixed connection of the driven wheel cover 3 and the driven wheel 5, and realize the synchronous movement of the two.

Preferably, the friction plate 11 is provided at its end with a friction felt 10 for contact with the driving wheel 6 to increase frictional resistance.

Preferably, at least one insert 12 is uniformly fixed to the circumference of the bottom plate 4.

Preferably, the fixing screw 7 is a grub screw.

The working principle and the working process of the invention are as follows:

fixedly placing a yarn drum on a bobbin 2, starting a yarn feeding process, driving the bobbin 2 to rotate by external power, wherein the rotating speed of the bobbin 2 is the yarn feeding speed; the spool 2 rotates to drive the driven wheel cover 3 to rotate, and then drives the driven wheel 5 to rotate, compresses the coil spring 9, compresses to a certain degree until the coil spring 9 is not deformed, the coil spring 9 stores elastic potential energy, and at the moment, the coil spring 9 drives the driving wheel 6 to rotate, so that the yarn feeding process is continued.

When the yarn feeding rotating speed needs to be adjusted, the locking screw 13 is screwed, so that the locking screw 13 moves towards the direction close to the driving wheel 6 along the internal thread of the embedded block 12 and further contacts with the driving wheel 6; the contact degree of the friction felt 10 and the driving wheel 6 is adjusted through the locking screw 13, and further the friction resistance on the driving wheel 6 is adjusted; the rotating speed of the driving wheel 6 is influenced by the friction resistance to change, the rotating speed of the driven wheel 5 is controlled by the driving wheel 6 through the coil spring 9, the rotating speed of the driven wheel cover 3 is controlled by the rotating speed of the driven wheel cover 3, and the rotating speed of the spool 2 is controlled by the rotating speed of the driven wheel cover 3, namely the yarn feeding speed can be adjusted.

Nothing in this specification is said to apply to the prior art.

Claims

1. A yarn feeder with adjustable yarn feeding speed is characterized by comprising an end screw, a bobbin, a driven wheel cover, a bottom plate, a driven wheel, a driving wheel, a mandrel, a coil spring, a friction plate, an insert block and a locking screw;

2. The yarn feeder with adjustable yarn feeding speed as claimed in claim 1, wherein a groove is formed on an outer surface of one end of the bobbin; a first bump is arranged on the outer surface of one end of the driven wheel cover; the groove is matched with the first bump, so that the spool and the driven wheel cover are detachably and fixedly connected, and synchronous movement of the spool and the driven wheel cover is realized.

3. Yarn feeder with adjustable yarn feeding speed according to claim 1 or 2, characterised in that both ends of the bobbin are circular plates, the outer surface of which is provided with grooves.

4. The yarn feeder with adjustable yarn feeding speed as claimed in claim 1, wherein the inner surface of the driven wheel cover is circumferentially provided with a second projection; the outer surface of the driven wheel is circumferentially provided with slots; the second lug is matched with the slot, so that the driven wheel cover and the driven wheel are detachably and fixedly connected, and synchronous movement of the driven wheel cover and the driven wheel is realized.

5. The yarn feeder with adjustable yarn feeding speed according to claim 1, wherein the friction plate is provided at its end with a friction felt for contacting with the driving wheel to increase frictional resistance.

6. The adjustable yarn feed speed yarn feeder of claim 1, wherein at least one insert is uniformly fixed to the circumference of the base plate.