JP2016033277A - Fineness sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fineness sensor whose production and maintenance are facilitated.SOLUTION: In a fineness sensor where two disks 1, 4 where raw silk during reeling is arranged with an insertable gap are freely rotatably arranged, further, the torque reverse to the reeling direction of the raw silk is given, when the raw silk retains the objective fineness, owing to the frictional force of contact, the rotation of the disks by rotational force is prevented, and when the raw silk is made finer than the objective fineness, and the frictional force of the contact with the disks is reduced, the rotation of the disks by the rotational force is allowed, the disks are made of metal, further either disk 1 is projectingly provided with a concentric circular step 2, and the planar surface of the step and the planar surface of the other disk are made to adhere to each other, thus a gap by the height of the step is produced between the planar surfaces of the respective disks.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fineness sensor for use in an automatic spinning machine, and more particularly to a fineness sensor aimed at easy manufacture and maintenance.

  In an automatic reeling machine, the kite thread unwound and pulled out from the kite in the spinning tank is pulled out by the pulling force of the small frame, joined together, gathered, and further composed of Kennel. , Is fed out as raw silk. During this process, it is necessary to replenish new cocoons when the fineness of the raw yarn being wound becomes high, and as a mechanism for that purpose, it is detected whether the yarn being plied matches the target fineness. In addition, a fineness sensor that gives an instruction to connect a new ridge when it does not match is widely used.

  The fineness sensor is configured to freely rotate two discs arranged with a gap in which the raw silk being inserted can be inserted, and to provide a rotational force opposite to the raw silk direction, so that the raw silk has a desired fineness. The disc is prevented from rotating by the rotational force due to the frictional force of contact while the raw silk is thinner than the desired fineness and the frictional force of contact with the disc is reduced by the rotational force. The fineness of raw silk is sensed by allowing the disk to rotate (Patent Documents 1 and 2).

  In other words, when the raw silk is thicker than the target fineness, the disk rotates upward, and when the raw silk is thin, the disk rotates downward, so the lowering of the fineness transmission pin protruding from the eccentric position of the arm fixed coaxially with the disk is searched. And give instructions to join a new kite.

  The basic principle of the fineness sensor is very simple. However, in the actual implementation, securing the accuracy of the gap between the two disks has become a big problem. In other words, if the accuracy of the gap is slightly out of order, the fineness sensor will malfunction, so how to secure a highly accurate gap has become an issue.

  Therefore, in the above-mentioned known invention, the gap between the disks is ensured by interposing a thin plate between the disks, and the material of the disk itself is made of a glass plate having a high hardness that is easy to take a smooth surface. This is the mainstream of current fineness detectors. In this case, the thin plate was tested with various materials, but the required accuracy could not be obtained easily, and finally settled by using terephthalic acid polyester.

  On the other hand, there has also been proposed a fineness sensor that secures a gap by projecting three or more protrusions having a required height on the surface of a disk made of a glass plate instead of a thin plate (Patent Document 3).

Japanese Patent Publication No. 30-1956 Japanese Patent Publication No. 30-6606 Japanese Utility Model Publication 35-26807

  The fineness sensor of the type in which a thin plate is interposed between the above-mentioned circular plates is fixed by fastening two discs with screws, but since the thin plate itself is made of synthetic resin, it is deformed by the screw tightening and the gap is subtly changed. Therefore, skilled work and measuring equipment are required for the work, and it can only be performed by a specialized factory. Even so, variations sometimes occur and the fineness detector sometimes malfunctions.

  In addition, sericin adheres from the raw silk on the surface of the disk that is always in contact with the inserted raw silk, so it is necessary to clean it regularly. For this purpose, the screw is not removed and the two disks are not separated. In such a case, there is a problem that the gap is slightly changed during reassembly. Therefore, there is a problem that cleaning must be sent to a specialized factory.

  In addition, since the disc is made of glass, there is a problem that it is accidentally dropped or damaged when hit by an object.

  On the other hand, the fineness sensor of the type in which three or more protrusions having a required height are provided on the surface of the disk, and the glass protrusion is provided on the surface of the glass disk with high accuracy. This is a very difficult problem in terms of processing technology.

  The present invention has been created for the purpose of providing a fineness sensor that solves the above-mentioned problems.

  That is, the fineness sensor of the present invention is arranged to freely rotate two discs arranged while maintaining a gap in which raw silk being inserted can be inserted, and to give a rotational force opposite to the raw yarn winding direction, While the desired fineness is maintained, the frictional force of the contact prevents the disc from rotating due to the rotational force, and when the raw silk becomes thinner than the desired fineness and the frictional force of contact with the disc decreases. In the fineness sensor that senses the fineness of raw silk by allowing the disc to rotate by the rotational force, the disc is made of metal, and a concentric step is provided on one of the discs. The flat surface and the flat surface of the other disk are brought into close contact with each other so that a gap corresponding to the height of the step is generated between the flat surfaces of the respective disks.

  Further, the fineness sensor according to claim 2 is characterized in that two disks are formed by cutting titanium in the fineness sensor.

  The fineness sensor according to claim 3 is characterized in that two disks are formed by cutting stainless steel in the fineness sensor.

  According to the fineness sensor of the present invention, since the disc is made of metal and a concentric step is protruded from one disc, a gap corresponding to the height of the step can be secured. In this case, for example, if titanium is machined by cutting as in the invention according to claim 2, or stainless steel is machined by cutting as in the invention according to claim 3, the steps and smoothness can be made with extremely high accuracy. The surface can be formed, and the disk has high hardness.

  Therefore, even when the disk of the fineness sensor of the present invention having a high hardness is fixed by tightening two disks with screws, the step is located behind the position where the surface is in close contact with the surface of the other disk. There is no compression deformation, and the gap does not move back and forth when fastened with screws. As a result, a high-precision fineness sensor without variations in the gap between the disks is realized.

  On the other hand, even if the screws are removed for cleaning and the two discs are separated and disassembled, the gap does not move back and forth even if they are screwed and fixed again for assembly as described above. Even if it is not sent to the factory, it can be easily cleaned on the user side.

  Moreover, since it is not made of glass like a conventional disk but is made of a metal that is resistant to impact, a fineness sensor that can be accidentally dropped or damaged even when hit by an object can be realized.

FIG. 3 is an exploded side view of the fineness sensor according to the present invention with a part cut away. Same as above, partially cut away side view. Same as above, front view. The exploded perspective view of a disk same as the above.

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded view showing each member of the fineness sensor of the present invention. The fineness sensor includes a disk 1 and a disk 4 for inserting raw silk being wound, an arm member 7 for transmitting fineness, a weight 11 for applying a rotational force opposite to the direction of raw silk by gravity, these It is comprised from the shaft 14, the nut 13, and the washer 12 for penetrating and fixing.

  FIG. 4 is a diagram showing details of the discs 1 and 4. One disc 1 is provided with a concentric step 2 projecting from its surface, and the planar surface of the step 2 is brought into close contact with the planar surface of the other disc 4 (see FIG. 2). The discs 1 and 4 are made of metal, but here are made by cutting titanium. In this case, the surface of the disc 1 and the surface of the concentric step 2 are cut and polished so that the disc 4 forms an accurate smooth surface. In addition, as titanium, a titanium two-type PL material can be assumed.

  The material of the discs 1 and 4 is not limited to titanium as long as it can form a step and a smooth surface with high accuracy and has high hardness, and may be stainless steel (SUS304 or 303), for example. Good.

  The discs are combined by inserting a boss 5 projecting from the surface of the other disc 4 into a through-hole 3 bored in the center of one disc 1, and the boss 5 has a shaft. Fourteen through holes 6 are drilled.

The gap provided between the disks 1 and 4 is determined by the target fineness of the yarn to be wound. The following is a table showing an example.
┌───┬──────┬──────┬──────┐
│d │Fine fineness │Gap │Tolerance │
├───┼──────┼──────┼──────┤
│90 │90 │0.13 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│60 │60 │0.107 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│42 │41.5 │0.09 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│31 │30.5 │0.081 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│27 │26.5 │0.076 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│21 │20.5 │0.064 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│14 │14 │0.052 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│10 │10 │0.044 │ + -0.5μ│
├───┼──────┼──────┼──────┤
│8 │8 │0.039 │ + -0.5μ│
└───┴──────┴──────┴──────┘

  An arm member 7 and a weight 11 are stacked on the discs 1 and 4, and a shaft 14 having a flange 16 projecting at one end and a male screw 15 engraved at the other end, and a nut 13 screwed into the male screw 15. It is fixed by tightening. In this case, a washer 12 is interposed between the nut 13 and the disc 4 to prevent loosening.

  The arm member 7 is provided with a fineness transmission pin 10 projecting at an eccentric position and rotates together with the disks 1 and 4, and a retrieval fitting (not shown) of an automatic reeling machine (not shown) is rotated as described above. An instruction to catch a new heel is issued when the accompanying decrease in the fineness transmission pin 10 is detected.

  The weight 11 has a configuration in which a weight portion 11A is provided at an eccentric position, is accommodated in the recessed portion 9 provided in the center of the arm member 7, and rotates together with the disks 1, 4 and the arm member 7, A rotational force opposite to the direction of the raw yarn is given to these by gravity (see FIG. 3).

  The fineness sensor according to the present invention having the above-described configuration is put to use by rotating the rotating shafts 14A and 14B projecting from both ends of the shaft 14 to an automatic spinning machine.

DESCRIPTION OF SYMBOLS 1 Disc 2 Level | step difference 4 Disc 7 Arm member 10 Fineness transmission pin 11 Weight 14 Shaft

Claims (3)

  While rotating the two discs arranged with a gap in which raw silk being inserted can be inserted, and rotating the reverse direction of the raw silk, while the raw silk is maintaining the desired fineness The rotating force prevents the disk from rotating due to the frictional force of contact, and when the raw silk becomes thinner than the desired fineness and the frictional force of contact with the disk decreases, the rotating force causes the disk to rotate. In a fineness sensor that senses the fineness of raw silk by allowing the disc, the disc is made of metal and has a concentric step projecting on one disc, and the flat surface of the step and the other disc A fineness sensor characterized in that a gap corresponding to the height of a step is generated between the planar surfaces of the respective disks by closely contacting the planar surfaces.   The fineness sensor according to claim 1, wherein two discs are formed by cutting titanium.   The fineness sensor according to claim 1, wherein two discs are formed by cutting stainless steel.

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