JPH0426460Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a growth prevention device with a single yarn wrapped around a drawing roller in the production of synthetic fiber raw yarn, and more specifically, a device for preventing growth by winding a single yarn around a drawing roller in the production of synthetic fiber yarn. In addition to improving the single yarn curling growth prevention device to reduce the occurrence of single yarn curling growth, even in the event that single yarn curling growth occurs on the roller, the device and the constituent members of the roller etc. The present invention relates to a device for preventing the growth of single yarns with winding, which does not damage the yarn.

[Prior Art] In the production of synthetic fiber staples, a spinning process is first performed, and the spun synthetic fiber yarn is
It is stretched using a stretching roller. FIG. 2 is a partially cutaway explanatory diagram showing an example of the configuration of the stretching roller 3. A support shaft 3a of the stretching roller is rotatably supported on the base 1 via a bearing 2, and the raw yarn is transported to the roller 3. wrapped around. A brush 6 is disposed near the outer periphery of the stretching roller 3 to press the roller periphery along the longitudinal direction. The brush 6 is made by densely flocking pig bristles on the fixture 5, and is pressed against the roller 6 so that the tips of the bristles evenly contact the entire surface of the roller. The brush 6 is housed in a box-shaped brush holder 12, and the brush holder 12 is fixed to the bracket base 4 via a bracket body 13, and the bracket base 4 is attached to the base 1 by a set bolt 10. Fixed. Brush pressure force adjustment bolts 8, 8 are screwed into the brush holder 12, and the back surface of the mounting portion 5 is pressed against the roller side, so that the pressure force of the brush 6 against the roller 3 can be adjusted. Efforts are being made to prevent or prevent curly growth.

[Problems to be solved by the invention] However, as a practical matter, it is difficult to make the contact pressure between the brush 6 and the outer circumferential surface of the stretching roller 3 uniform over the entire length of the roller, and it is difficult to make the contact pressure between the brush 6 and the outer peripheral surface of the stretching roller 3 uniform over the entire length of the roller. Generally, the areas where the contact force of the brush is high and the areas where it is low are randomly distributed. Therefore, in areas where the pressing force is low, the effect of preventing the yarn from wrapping around and growing is poor, and an excessively wrapping portion as shown by 9 in FIG. 2 is often formed. If the stretching device or the like is stopped and the excessively wrapped portion 9 is removed from the roller 3 until the wrapped portion 9 grows large, yarn production can be temporarily interrupted, but the timing of stopping may be If the excessively wrapped portion 9 grows abnormally large, the wrapped portion 9 will get caught between the roller 3 and the brush holder 12, and in the worst case, the brush holder 12 may be damaged or stretched. Eccentricity of the roller support shaft 3a often occurs, and these parts often have to be replaced.

To prevent the above-mentioned situation from occurring, the drawing roller and the yarn wrapping growth preventing member should be in uniform contact with each other to suppress the yarn wrapping and growth as much as possible. It is necessary to provide a device that does not cause damage to rollers, brush holders, etc. even if the curling growth progresses, and the device of the present invention has been made to satisfy these demands.

[Means for Solving the Problems] The coiled growth prevention device of the present invention that achieves the above purpose is a rotating post rotatably fitted on a support shaft protruding from a base substantially parallel to the stretching roller. At the same time,
A bracket body is attached to the rotating post, and a scraping member is provided on the stretching roller side of the bracket body to be evenly pressed against the stretching roller, and a scraping member is provided at the tip of the support shaft between it and the tip surface of the rotating post. The gist is that an adjustment nut is screwed together via a disc spring.

[Operations and Embodiments] FIG. 1A is a partially cutaway side view showing a typical embodiment of the present invention, and FIG. 1B is a sectional view taken along the line B-B' of FIG. 1A. The embodiments of the present invention will be described in detail below based on the examples, but the embodiments of the present invention should not be interpreted as being limited to the examples, and the design changes may be made in accordance with the spirit of the above and below. .

The stretching roller 3 is rotatably supported on the base 1,
A felt scraping member 11 is disposed along the longitudinal direction of the roller 3. The member 11 is the fixture 5
a, and the fixture 5a is held and fixed to the roller 3.
It is held in the brush holder 12 so that it can come into contact with or separate from the brush holder 12. A contact spring 20 is provided on the back of the fixture 5a via a protruding pin 21, so that the scraping member 11 is brought into contact with the circumferential surface of the roller 3 with a constant pressure. The brush holder 12 is fixed to a rotating post 15 via a bracket body 13, and the rotating post is attached so that it can rotate by being inserted through a supporting shaft 14 protruding from the bracket base 4. 14 and the rotary post 15 are connected by inserting a plurality of disc springs 16 into the distal end of the support shaft 14 and screwing a release force adjusting nut 17 onto the distal end thereof. That is, when the disc spring 16 is compressed and the adjustment nut 17 is tightened, the rotation post 15 is firmly held on the bracket base 4, and the freedom of rotation is restricted, making it difficult to wind the yarn. The tightening of the adjusting nut is adjusted so that the scraping member 11 is kept in contact with the roller 3 during normal operation, and the scraping member 11 can be retracted when excessive winding of the yarn occurs. Adjust the release torque of the removal member. A bracket base 4 having a protruding support shaft 14 is attached to the base 1 by a set bolt 19, and a bracket base inclination angle adjustment bolt 18 is screwed into the bracket base 4. Base 4
The installation inclination angle can be changed freely. That is, by changing the inclination angle of the bracket base 4, the brush holder 12 is moved closer to or farther away from the circumferential surface of the roller 3, and the roller contact pressure of the felt scraping member 11 is adjusted. Note that arrow R indicates the rotation direction of the roller 3.

By using a felt scraping member instead of a boar bristle brush, uniform contact pressure is applied to the contact area with the roller over the entire surface, and the contact force is not as strong as with a boar bristle brush. Unbalance does not occur, and therefore, the winding growth of the yarn as described in FIG. 2 is prevented. However, even if winding growth of the raw yarn occurs, the brush holder 12, bracket main body 13, and rotating post 15 can be released and escaped in the direction of the arrow X around the spindle 14 by the rotational force of the roller 3. The rolled yarn caught between the scraping member 11 and the roller does not damage the roller 3 and the like.

The contact pressure between the felt scraping member 11 and the roller 3 is set at 1 kg/kg from the viewpoint of preventing yarn from winding and growing.
It is preferable to set it to cm ² or more, and from the point of view of saving power consumption due to frictional resistance, it is recommended to set it to 2 Kg/cm ² or less.

In addition, the release torque for the rotating post 15 to prevent damage to the brush holder 12 and roller 3 is 1000~
Preferably, the range is 1200 kg-cm.

[Effects of the invention] By using the device of the present invention, it is possible to reduce excessive winding growth of the raw yarn on the drawing roller, and even if excessive winding occurs, the drawing roller can be easily removed. It no longer causes any damage. In addition, since the release torque of the scraping member can be adjusted, there is no need for the scraping member to be released or retracted inadvertently, or to be inoperable when there is an abnormality in yarn winding, so that the scraping member can be reliably retracted. Summer.

[Brief explanation of drawings]

Fig. 1A is a partially cutaway side view showing a typical embodiment of the present invention, Fig. 1B is a sectional view taken along line B-B' of Fig. 1A, and Fig. 2 is a conventional excessive winding method. It is a partially broken explanatory view showing a prevention device. 1...Base, 2...Bearing, 3...Stretching roller,
4... Bracket base, 5... Mounting part, 6... Boar bristle brush, 8... Pressing force adjustment bolt, 9... Excessive winding of raw yarn, 10, 19... Set bolt, 1
DESCRIPTION OF SYMBOLS 1... Felt scraping member, 12... Brush holder, 13... Bracket body, 14... Support shaft, 15... Rotating post, 16... Belleville spring, 17
... Release force adjustment nut, 18 ... Inclination adjustment bolt, 20 ... Contact spring, 21 ... Projection pin.

Claims (1)

[Scope of utility model registration request] A device for preventing the single yarn from winding up and growing on the stretching roller used in the production of synthetic fiber filaments, which prevents the single yarn from winding up and growing on the stretching roller. A rotary post is rotatably fitted on a support shaft projecting approximately in equilibrium, a bracket body is attached to the rotary post, and a scraper is provided on the stretching roller side of the bracket body to be evenly pressed against the stretching roller. 1. A wound growth prevention device for a single yarn, characterized in that an adjustment nut is screwed between the tip of the support shaft and the tip end surface of the rotation post via a disc spring.