JP2510494B2 - Yarn storage and supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a yarn accumulating and supplying device of the type limited to the preamble of claim 1.

(Prior Art) In this type of yarn accumulating / supplying device, a switching means is used to control a drive part that functions to supply the yarn to the yarn supply part. When the supply amount to the yarn supply unit is reduced to the minimum extent, the supply amount of the yarn is increased again to the maximum amount, and then the drive unit is deenergized. Replenishing the yarn to the yarn supplying section, and the control process is performed so that the yarn replenishment is maintained between the maximum amount and the minimum amount without remaining in either the maximum amount or the minimum amount. Has been done. If the yarn supply amount is either the maximum amount or the minimum amount, this can be regarded as indicating that the yarn storage / supply device is defective, and as a result of such a defect, The switching device not only deactivates the drive of the yarn storage and supply device, but also the associated machinery that cooperates with the yarn storage and supply device. The yarn storage and supply device equipped with a fixed amount of yarn storage body,
Usually, a finger-shaped probe element is used, which is fixed to the outside of the yarn accumulator and one of the ends is projected into the axial recess of the accumulator under the action of the spring displacement force. . The probe element may have contacts that cooperate with the switching device or the probe element itself cooperates with the opposing contacts to generate a signal. When the yarn supply increases by a certain amount, the probe element flexes, resulting in a signal that ceases to further increase the yarn supply. However, a drawback of this known device is that the probe element exerts a certain force on the winding of the thread. As a result, a considerable amount of tension is applied to the yarn when the yarn of the winding portion is pulled out. In the yarn processing industry or the textile industry, it is an essential requirement that the tension of the supplied yarn is not only very low, but also is almost constant, and it was imposed on the yarn storage and supply device to meet this requirement. This is the main issue. As the thread is withdrawn, it forms a closed loop, which must be prevented by externally arranged probe elements. Furthermore, another problem is that the probe element or its spring displaceability has to be adjusted according to the type and characteristics of the yarn to be fed and depending on the yarn thickness. However, a complicated configuration is required to solve this problem. Under the above-mentioned background, the adoption of an optical detection device or an optoelectronic detection device capable of scanning the yarn supplying section without contact of the yarn is increasing. In one of these devices, a beam of light is directed to a stationary reflective surface on the reservoir, which is reflected and then the reflected beam is monitored for intensity and the like. To be done. However, it is very difficult to constantly generate a strong signal that can be monitored in this way.

(Problems to be Solved by the Invention) Therefore, an object of the present invention is a yarn accumulating / supplying device of the type mentioned at the beginning, which is capable of supplying a yarn without interfering with the drawing of the yarn from the yarn accumulating body. An object of the present invention is to provide a yarn storage / supply device that can be controlled or monitored.

(Means and Actions for Solving Problems) In order to achieve the above-mentioned object, a yarn accumulating / supplying device characterized by the configuration described in the characterizing section of the first aspect of the invention is in accordance with the present invention. It was proposed.

The invention makes it possible to use a very lightweight and easily movable probe element which is not subject to external contamination during use and which does not hinder the drawing and advancement of the thread. Because in one position where the probe element protrudes from the surface of the thread reservoir, the thread is lifted off the surface of the thread reservoir onto the probe element or a relatively long distance before reaching the probe element, the thread. Lifted from the surface of the reservoir, in the other position the probe element is flush with the surface of the reservoir under the action of a very weak potential force or of the yarn reservoir so that it is substantially absent from the yarn. This is because it is trapped inside. Since the probe element does not operate direct contacts or switching devices, it does not exert any significant force on the thread. On the other hand, the sensor element responds to the displacement of the probe element without actually touching the probe element,
A reaction signal is generated which represents the displacement of the probe element, which is very large or very small, and the displacement of the yarn feeder associated with this displacement.

Advantageous embodiments are described in the second part of the claims. A proximity indicator detects the displacement of the probe element and produces a signal, for example, in response to a change in the magnetic field generated by the indicator itself. Commercially available proximity indicators are very sensitive to changes in position and can be placed at a sufficient distance from the surface of the yarn reservoir so as not to impede the movement of the yarn. This type of proximity switch is unaffected by other conductive or magnetic elements that are not directly located in its operating area.

The features of the embodiment limited to claim 3 are that the metal leaf spring is lightweight, can be bent into any suitable shape, and can hold a stable return displacement force. It is possible and can be installed in a simpler manner. As a result, it is possible to construct a reliable scanning unit that is lightweight and requires a small space in association with the proximity switch.

According to the fourth aspect of the invention, the position of the magnetic field is changed as a result of the displacement of the probe element, and the change is detected by the sensor element as a change in the strength of the magnetic field, and as a result, a signal is emitted. Another embodiment is limited.

Another important feature of the present invention is as set forth in claim 5. When the return movement of the probe element is not affected by external force, the return displacement force can be kept very low, so that there is no obstacle and the probe is moved from one position to another position against the return displacement force. Elements can be moved conveniently. Therefore, the winding portion of the yarn is only subjected to the action of a force that can be neglected, and the drawing tension of the yarn and the forward movement of the yarn supplying portion are not affected.

Another advantageous embodiment is proposed in claim 6 of the appended claims. The axis around which the probe element pivots is positioned relatively close to the surface of the thread reservoir, and the mass of the probe element containing the permanent magnet is concentrated around said axis, so that It can be easily moved. In this embodiment, the tilting action results in a limited tilting of the magnetic field of the permanent magnet, which tilt is detected by the sensor element as a rapid and relatively sharp change in the strength of the magnetic field. In the case of leaf springs, a tilt axis is determined for each end, so that the long lever arm requires only a weak force to move each end.

A modification of the embodiment described above is disclosed in claim 7. Since this type of bending spring can be constantly loaded with a constant low resistance, a complementary feature of this variant is that the probe element can be used in place in the thread reservoir. Is.

Another advantageous modified embodiment is disclosed in claim 8 of the appended claims. In this case, when the tension spring takes on the role of a bending spring and the detection region is displaced from the yarn supply section, the probe element can be returned to the position where the probe element protrudes from the surface of the yarn storage element.

Another advantageous modified embodiment is described in claim 9. In this embodiment, the probe element is displaced in the return direction not only by a mechanical force but also by a magnetic force. The initial force required to displace the probe element from one position is very weak and accordingly the displacement of said probe element can be easily carried out to have a beneficial effect on the winding of the thread. can do.

Another advantageous modified embodiment is disclosed in claim 10. In the case of this embodiment, the winding element of the yarn causes the probe element to be displaced in the linear direction, and as a result, the weakening of the magnetic field can be detected by the sensor element. A signal is generated. The probe element is advantageously housed in a small hole in the thread reservoir which can be easily protected from contamination.

Another modified embodiment is proposed by claim 11 of the appended claims. In this case, the limited tilt axis of the probe element is not provided in the thread reservoir. Instead, the probe element is held in an unstable equilibrium state by the return displacement force, and the movement of the winding of the yarn can move the probe element from an unstable equilibrium state to a stable equilibrium state. As a result of the oval shape of the disc, the probe element does not project from the surface of the yarn accumulator when the probe element is in the second position.

As another modified embodiment, the advantageous embodiment described in claim 12 may be adopted. in this case,
As a result of the provision of steps in the guide path, the probe element is
It protrudes from the surface in one position, but does not protrude from the surface in the other position.

In this connection, it is advantageous to apply the arrangement according to claim 13 of the claims. This is because, in this embodiment, the end position of the probe element is clearly limited from the beginning, and the position of the magnetic field of the permanent magnet can be accurately detected by the sensor element.

The arrangement as claimed in claim 14 is important in that the wound layer of yarn can easily move the probe element from one position to another.

The sensor element defined in claim 15 is also able to detect very small changes in the strength of the magnetic field.

Another particularly advantageous embodiment is disclosed by claim 16 of the claims. Thanks to the two permanent magnets being arranged with the same polarity, the tilting element can be constrained to follow the tilting of the probe element. The tilting element can easily be designed to operate the switching device effectively or to cooperate with the optoelectronic switching element protected from contamination, the probe element itself, such a thing being impossible. Of course. The probe element only supplies magnetic pulses to move the tilting element to generate a signal.

Particularly advantageous features are obtained with the exemplary embodiment according to claim 17. Because, according to this embodiment, it is possible to dispense with the separate return spring or the separate permanent magnet required to return the probe element, as well as the magnetic field between the permanent magnet of the probe element and the permanent magnet of the tilting element. Because a dynamic interaction can be used to generate the return force for the two members.

The embodiment as claimed in claim 18 has proved to be particularly advantageous in practice. According to the configuration of this embodiment, the probe element has a simple shape so that it can be manufactured at a low cost, and it is easy to position the probe element within the yarn accumulator, and
It is possible to quickly respond to the contact of the winding portion of the yarn. The intrusion of dust and dirt, which may adversely affect the operation of the probe element, can be effectively prevented by the structure described in claim 19 of the claims.

A feature of the embodiment disclosed in claim 20 is that it does not require maintenance. Since the dent containing the probe element is sealed so as not to leak outside, the operation of the probe element is not affected by contamination.

A particularly advantageous feature of the embodiment as claimed in claim 21 is that each probe element processes two different signals which can be processed as analog or digital signals controlling the other components. It is monitoring the limit of the yarn feeding part so that it may occur.

Claim 22 of the claims discloses a structurally simple embodiment in which both probe elements are constituted by simple leaf springs.

Another advantageous embodiment is limited to claim 23. In this embodiment, the movement of the probe element is utilized to deflect a light beam that is directed at the probe element by an external light source. Unlike conventional optical scanning systems, the advantages provided by this embodiment are the ability to use very intense beams,
As a result of the deflection of the beam of light, a very strong signal can be generated. Because the receiver does not conventionally detect changes in the intensity of the reflected beam of light that is relatively weak for some reason, but rather when and when a strongly reflected beam of light is present. This is because it is configured to detect only the difference between the cases where it does not. Therefore, the optical scanning system according to this embodiment is significantly more sensitive and reliable than previously known systems.

Another important feature is set forth in claim 24. The receiver is positioned at a position along the path occupied by the light beam as the probe element moves. The beam of light hits the receiver at one point in the middle of the movement of the probe element, but not in the rest of the movement. The signal generated in this manner is strong.

In another embodiment as set forth in claim 25, the beam of light is moved by the probe element 2
Hit the receiver in one of the two positions. As the probe element moves from its respective position, the reflected beam of light will not hit the supporting receiver upon exiting such movement.

Finally, the importance of the arrangement as claimed in claim 26 is that the direction in which the beam of light is reflected by the probe element can be chosen to set the most appropriate control conditions and / or The designer of the device is free to determine the placement of the various cooperating components within a wide range.

(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings illustrating an example of the present invention.

The yarn accumulating and supplying device 1 including the main body base portion 2 and the supporting arm 3 is shown in FIG. 1 in a partially cut state, and the carrier 4 carrying the yarn withdrawing port 5 is the supporting arm 3 in the previous period. Is mounted on. The main body base portion 2 comprises a drive source (not shown) for driving a tubular thread winding element 6 which rotates together with a drive shaft 7 extending in the axial direction of the device 1. Two drum-shaped yarn accumulating bodies 10 and 11 carrying rods 12 and 13 protruding in a separated state have rotating shafts inclined in opposite directions to each other and have bearings at separate mounting positions. Mounted on the drive shaft 7 by means of parts 8 and 9, said plurality of rods
12 and 13 define a reservoir, ie a substantially cylindrical surface 15 of the yarn reservoir. Although not shown, in some cases the rotational axes of the two yarn accumulators 10 and 11 are eccentric, which results in angular displacement of the rotational axes,
The drive shaft 7 will be axially advanced away from the yarn winding element 6 on which the yarn is wound and towards a yarn supply 26 which is supported on the surface 15.

The thread, indicated by reference numeral 27, is fed through the thread winding element 6 and is wound tangentially on the surface 15,
The winding part of the yarn supplying part 26 is formed. The yarn 27 is continuously pulled out from the yarn supplying section 26 on the head 22 of the yarn reservoir through the yarn outlet 5. The maximum amount of the palpation probe element 18 and the minimum amount of the palpation probe element function to determine the storage amount of the yarn supplying unit
19 is arranged in a recess 16 extending in the longitudinal direction of the thread reservoir defined by the wall 17. The sensor elements 20 and 21, which are spaced from the maximum palpation probe element 18 and the minimum palpation probe element 19 and are oriented towards the maximum palpation probe element 18 and the minimum palpation probe element 19, are While detecting the actual position of each of the mass palpation probe element 18 and the minimum palpation probe element 19,
For example, a signal used to energize or de-energize a drive motor provided in the body base portion 2 may be emitted to wrap more thread onto the surface 15 to provide a thread supply.
Increase 26 or stop winding the thread.

In order to prevent the yarn accumulator from rotating together with the drive shaft 7, the head 22 has a magnet 24,
Another magnet 23 is supported in a carrier ring 25 facing the magnet 24. The drive shaft 7 rotates in the yarn accumulator, as the holding force that results from the interaction between the magnets 23 and 24 holds the yarn accumulator in the fixed state. Thus, the yarn reservoirs 10 and 11 will advance the yarn. The yarn accumulator further comprises a filling body 14 which prevents foreign matter from entering the yarn accumulator and prevents foreign matter from entering the bearing portions 8 and 9.

The yarn supply unit 26 must hold a certain amount of yarn winding, and this amount means that the yarn is wound further by the yarn winding element 6 and that the yarn is pulled out through the yarn outlet 5. Change according to. Therefore, the winding amount of the yarn supplying section changes between the maximum value and the minimum value. Needless to say, the winding amount of the yarn supplying section must not exceed the maximum value and the minimum value. Activating the maximum amount palpation probe 18 shown in FIG. 1 indicates that the yarn supply 26 holds more than the minimum amount of winding, while activation of the minimum amount palpation probe 19 causes It is instructed that the yarn supply unit 26 holds a winding amount smaller than the maximum value.

In the embodiment shown in FIGS. 2a and 2b, the maximum palpation probe element 18 and the minimum palpation probe element 19 are constituted by two ends 65 and 65 'of a metal leaf spring 66. There is. The leaf spring 66 comprises a flat base 67, which is removably fixed in the recess 16 by means of a set screw 68. Vertical leg 71 base towards surface 15
Ends 65 and 6 raised from 67 and bent outwards
5 ', with one outwardly bent end 65 at the winding of the thread 27, i.e. the surface 15 when there is no winding.
It is designed to project upward from. The other end 65 'is connected in an inclined state to the intermediate part 70 and does not project completely from the surface 15 in the relaxed state, but occupies an inclined position with respect to the winding, while being loaded. In the up position, the intermediate portion 70 occupies a substantially flush position with the surface 15 because it is depressed in the recess about the tilt axis 69 '(see Figure 2a). The tilt axis 69 'of the end 65' may be positioned at the lower end of the rear leg 71 at the juncture with the base 67. The tilting shaft 69 of the other end 65 may also be positioned at the juncture with the base 67 of the right leg 71, as shown, or the end 65
It may be positioned at the joint with the leg 71 of the. Sensor element
20 'and 21' are conductive probe elements 28 'that emit signals.
Proximity actuators that produce electromagnetic or eddy current fields that are affected by displacements of and 28 ". Proximity actuators of this type are commercially available in various types with different sensitivities. The device works satisfactorily even in the presence of other metal elements, so that the correct operation of the two sensor elements 20 'and 21' is influenced by the integral construction of the leaf spring 66. There is no.
However, it is of course also possible to use separate leaf springs for the two probe elements 28 'and 28 ". The probe elements 28,28', 28", 39,46 are mechanical sensing elements. The sensor elements 20, 20 ', 21, 21', 58 constitute the sensing element.

In the embodiment shown in FIGS. 3a to 3c, the maximum and minimum palpation probes are each magnetized to a predetermined polarity mounted on a bending spring 30 fixed to a counter bearing 31. A block-shaped probe element 28 with a built-in permanent magnet 29. Bending spring 30
It is made from a soft rubber or elastomer so that when the probe element 28 is pushed down by the winding of the thread supply, it flexes around the point of inflection. As shown in FIG. 1, the probe element is supported on a bending spring extending substantially radially with respect to the axis of the device 1, while
In the embodiment shown in FIGS. 3a to 3c, the probe element is mounted on a generally axially extending bending spring 30. Each bending spring serves to position the probe element 28 in two positions. At one of the two positions positioned under the influence of the return displacement action of the bending spring 30, the wedge shape of the probe element 28 defined by the substantially vertical vertical surface 33 and the inclined inclined surface 32. Tip of
34 protrudes high from the surface for a distance approximately equal to the diameter of the thread. In the other position (see Fig. 3c) the bending spring
30 bends downwards and the tip 34 of the probe element 28 has a surface 15
The winding portion of the yarn supplying section 26 can slide without any resistance.

As shown in FIG. 3b, the probe element 28 is mounted in the recess 16 in an interference fit. The wedge-shaped tip 34 has a convex contour. permanent magnet
29 is mounted in the manner shown in FIG. 3a, so that the magnetic field lines M through the center of the magnetic field are directed straight towards the sensor element 20. The sensor element 20
Is preferably a Hall element that immediately responds to changes in the strength of the magnetic field that produces the signal.

At the position of the probe element 28 shown in FIG. 3c, the magnetic field, that is, the magnetic field line M, is tilted laterally, as is apparent from the figure, so that the sensor element 21 of the minimum quantity palpation probe 19a is It only detects a small part of the magnetic field compared to the position shown in Figure 3a. In this embodiment, the sensor element 20 or 21 can emit a signal in response to a downward displacement of the probe element 28 and / or a return movement.

Minimal amount palpation probe 18 shown in Figures 4a and 4b.
In the embodiment of b, the block-shaped probe element 28 integrally incorporates the permanent magnet 29 and is tiltably displaced about the tilt axis 36 extending substantially parallel to the winding portion of the yarn. It is mounted in the bearing part 37 of the weft thread reservoir. Since the tilting shaft 36 is positioned near the center of gravity of the probe element 28 containing the permanent magnet 29, the force required to tilt the probe element may be relatively weak. It is also possible to position the tilting shaft 36 directly at the center of gravity. In this embodiment, the return displacement force required to return the probe element from the downward tilted position to the position shown in Figure 4a has a polarity opposite that of the permanent magnet of probe element 28. It is generated by another permanent magnet 38 arranged in the yarn accumulator.
As a result of the interaction between the permanent magnets 29 and 38, the probe element 28
Immediately returns to the position shown in Figure 4a as soon as the load acting on the winding of the thread is removed.

In the embodiment shown in FIGS. 5a and 5b, the minimum volume palpation probe 18c and the maximum volume palpation probe 19c each consist of an elliptical disk-shaped probe element 39, the permanent magnet 29 being a probe element 39. It is located in the center of. The return displacement force of each probe element 39 is generated by another permanent magnet of opposite polarity. As shown in FIG. 5b, the width of each probe element is relatively large, so that the probe element will not be on the axially extending guide path 43 formed in the recess 16 of the thread reservoir. You can move smoothly. Due to the action of the permanent magnet 38, the probe element 39 is in an upright position, for example,
A laterally extending grooved surface portion 40 projects from the surface 15 and occupies a position for engaging the winding of the thread 27. This results, for example, in probe element 39 of minimal palpation probe 19a.
Rotates sideways to a position where surface portion 40 is flush with surface 15. The guide path 43 comprises stopper members 41 and 42 which define the two end positions of each probe element.

Minimal amount palpation probe 18 shown in Figures 6a and 6b.
In the embodiment of b, the probe element 46 is constructed in the form of a circular disk with a certain width in which the permanent magnets 29 are integrated. A guide path 44 having a step 45 is recessed in the yarn accumulating body so that the probe element 46 can move along the guide path 44. In one of the positions occupied by the probe element, the probe element 46
Project from the surface 15, while in the other position (shown in dotted lines) the probe element 46 is flush with the surface 15. Probe element in a position protruding from the recessed position
The return displacement force required to return 46 is generated by the second permanent magnet 38. 2 of probe element 46
Stopper members 41 and 42 that determine one end position are formed in the guide path 44. Besides, in order to prevent the probe element 46 from rotating with respect to the guide path 44,
A notch 48 is formed on the probe element 46 which cooperates with a tooth 47 on the 44.

As a modification of this embodiment, it goes without saying that the probe element 46 can also be configured with a spherical contour.

In the embodiment described above, the second permanent magnet 38 can be replaced by a spring that can generate the return displacement force of the probe element.

A minimum quantity palpation probe 18e according to a modified example of the present invention shown in FIGS. 7a and 7b has a permanent magnet integrally incorporated therein, and a bearing of a yarn accumulator so as to tilt about a tilt axis 36. It comprises a block-shaped probe element 28 mounted in a portion 37. Pin with tension spring 48 attached
64 protrudes from the bottom surface of the probe element 28, and the other end of the tension spring 49 is locked to a fixed mounting pin 50 provided on the yarn accumulator. The tension spring 49 is attached to the probe element 28.
It functions to generate the necessary return displacement force.
The thread reservoir is suitably equipped with stopper means (not shown) for limiting the end position of the probe element 28 shown in Figure 7a.

In the embodiment shown in FIG. 8, the minimum quantity palpation probe 19f and the maximum quantity palpation probe 18f are respectively rotated 180 ° with respect to the forward movement of the winding portion of the thread 27 and the position shown in the above embodiment. Block-shaped probe element 28
And the inclined surface 32 of the probe element 28 is oriented against the forward movement. The tip of each probe element 28 is rounded as indicated by reference numeral 51.

Both probe elements 28 are mounted in a radial indentation 52 in the thread reservoir so that they can be moved radially by a push rod 54 which is slidably guided in a retainer plate 53. . The large diameter head portion 55 with which the compression spring 56 engages is the retainer plate 53.
Formed on each push rod 54 below, the other end of the compression spring 56 is supported on a support surface 57. Empty space
52 is sealed by a thin skin layer 58 so as not to leak outside.

In the embodiment shown in FIG. 8, the minimum palpation probe 19f is pushed down by the yarn supply layer, its tip 51 is substantially flush with the surface 15 and the head portion 55 is a retainer. It is released from the engagement with the plate 53. On the other hand, the probe element 28 of the maximal volume palpation probe 18f has a head portion 55 engaging the retainer plate 53 and an inclined surface 32 protruding from the surface 15,
58 is displaced by the compression spring 56 to a position where it extends upward and spreads.

Also in the embodiment shown in FIGS. 9a and 9b, the block-shaped probe element 28 integrally incorporates the permanent magnet 28, and the bearing portion of the yarn accumulator is tilted about the axis 36. Installed in 37. Another permanent magnet 38 provided to generate the return displacement force is shown in FIG. 9a, but this second permanent magnet is not absolutely necessary in this embodiment.

This is a tilting element 58 'in which the sensor element arranged in line with the probe element 28 integrally incorporates a permanent magnet 60 having the same polarity as the permanent magnet of the probe element 28.
Because it is. The tilting element 58 'comprises an upstanding arm 59 cooperating with an optoelectronic sensor 63 as a switching element. The tilting element 58 'is mounted in the bearing portion 62 for tilting about an axis 61 parallel to the tilting axis 36.

The two permanent magnets 26 and 60 pull each other, and when the probe element 28 of the minimum amount of the probe 18g is tilted and displaced (see FIG. 10), the magnetic lines of force of the two magnets try to occupy a state in which they are aligned in parallel. As such, the tilting element 58 'incorporating the permanent magnet 60 similarly tilts about the axis 61, causing the two arms to release from engagement with the optoelectronic sensor 63 which serves to emit a signal. The magnets 29 and 60 cooperate. Thanks to the interaction of the two permanent magnets 29 and 60, as soon as the action of the load tilt probe element disappears,
Both permanent magnets 29 and 60 try to return to the position shown in Figure 9a.

Figures 11a to 11c show maximum palpation probe element
19 shows an example of an optical system applied to 18.

As shown in FIG. 11a, the maximal volume palpation probe element 18 is formed by the elastic end of a leaf spring 60 'secured below the surface 15 of the thread reservoir in a manner not shown. A probe element 28 is provided. Relaxed position I
Ends 65 project diagonally above surface 15, while
When the load is applied by winding the thread, the end
65 occupies position II, which is substantially flush with surface 15. Edge 65
Has a reflective surface 74, for example a mirror surface. For example,
A light-sensitive element cooperating with a light source 72, such as a photodiode, ie a sensor element 20 ″ in the form of a phototransistor, is arranged in the fixing part of the device. The beam of the end 65 reflective surface
The beam of light is reflected in direction 73I when it radiates toward 74 and probe element 28 occupies position I. The sensor element 20 ″ is aligned with the direction 73I of the reflected light peak. Winding the thread leads to position II at end 65.
When is moved, the beam of light 73 reflects in the direction 73II and no longer strikes the sensor element 20 ″.

In the embodiment shown in FIG. 11b, the light source 72 is integrated into the sensor element 20, which in this case receives the light source as well as the beam of light 73. It also has a light receiver. Sensor element 20
Light source emits a beam of light 73 radially with respect to the yarn accumulator and thus at right angles to the surface 15 of the yarn accumulator.
When the end 65 occupies position I, the beam of light 73 reflects in the direction of 73I and as long as it flows in this direction, the beam of light 73 does not hit the sensor element 20. When the end 65 is moved to a position II where it is substantially flush with the surface 15, the beam of light 73 is reflected in a radial direction 73II at a right angle to the surface 15 and the beam of light entirely strikes the sensor element 20. In this example,
The probe element 28, which is used as the maximal palpation probe 18, is used to generate a signal in a second position II, in which the beam of light 73 is a sensor element.
Reflected in direction 73II on 20.

In the embodiment shown in FIG. 11c, the probe element 28
Is mounted for radial movement with respect to the reservoir surface 15 and is formed in the form of a block with an inclined surface 74 'on which the winding of the thread rises, said inclined surface 74' itself being a light source. It has an insert that has the property of reflecting light or has the ability to reflect light. The probe element 28 also forms part of the maximum volume palpation probe 18. A light source 73 is mounted in the fusing portion of the apparatus which emits a beam of light 73 toward a surface 74 'of the probe element 28' in a direction generally perpendicular to the surface 15. At the position I of the probe element 28 'protruding from the surface 15, the beam of light 73 is reflected in the direction 73I and strikes the sensor element. It should be noted that the sensor element 20 is configured as a photodiode or a light-responsive signal generator. At position II, where the probe element 28 'is substantially flush with the surface, the reflected beam of light travels downwards as seen in the drawing and extends in the direction 73II so that the sensor element 20 "
Does not hit

In the embodiment shown in Figures 11a to 11c,
Since the beam of light directed to the probe element flows in a straight line in all directions, take care that reflected light hits the sensor element at a certain position of the probe element and does not hit the sensor element at other positions of the probe element. Just enough. In this connection, the movement of the probe element results in a corresponding movement of the reflected beam of light, and as far as the movement of the beam of light can be detected by the signal-producing sensor, with respect to the surface 15 or In which direction with respect to the axis of the thread reservoir (radially or around an axis extending parallel to the axis of the thread reservoir or the winding of the thread) the probe element must be moved by the winding of the thread It doesn't matter.

[Brief description of drawings]

FIG. 1 is a partially cut side view of a yarn accumulating / feeding device according to the present invention including a maximum / minimum amount palpation probe element for detecting the amount of yarn fed. FIG. 2a is an enlarged partial cross-sectional view of the device showing a first embodiment of the maximum and minimum dose palpation probe element shown in FIG. FIG. 2b is a sectional view taken along line II-II of FIG. 2a. FIG. 3a is a perspective view illustrating a second embodiment of the probe element shown in FIG. Figure 3b shows
Sectional drawing cut | disconnected by III-III of FIG. 3a. 4a and 4b are perspective views illustrating another embodiment of the minimal volume palpation probe element shown in FIG. FIG. 5a is a perspective view illustrating another embodiment using two probe elements. Figure 5b shows
FIG. 5b is a perspective view illustrating the maximum volume palpation probe element shown in FIG. 6a and 6b are perspective views illustrating another embodiment of the probe element. 7a and 7b are perspective views illustrating still another embodiment of the probe element. 8 is a perspective view illustrating another embodiment of the two probe elements shown in FIG. 9a and 9b are perspective views illustrating yet another embodiment of the maximum volume palpation probe element shown in FIG. First
Figure 10 is a perspective view illustrating the maximal volume palpation probe element shown in Figures 9a and 9b in a tilted position. Figures 11a through 11c are perspective views illustrating three embodiments of maximum volume palpation probe elements used in optical monitoring systems. 1 ... Yarn storage and supply device, 2 ... Main body base part, 3 ...
... Support arm, 4 ... Carrier, 5 ... Thread withdrawal port, 6 ...
Thread winding element, 7 ... Drive shaft, 8,9 ... Bearing part, 10,11, ... Yarn accumulator, 12,13 ... Rod, 14 ...
… Filler, 15… Surface, 16… Longitudinal dent, 17… Wall, 18… Maximum amount palpation probe element, 19…
… Minimal amount palpation probe element, 20, 21 …… Sensor element,
22 …… Head of yarn accumulator, 23, 24 …… Magnet, 25 ……
Carrier ring, 26 ... Thread supply part, 27 ... Thread, 28 ... Probe element, 29 ... Permanent magnet, 30 ... Bending spring, 31 ... Counter bearing, 32 ... Inclined surface, 33 ... Vertical surface , 34 ...
… Wedge-shaped tip, 36… Tilt axis, 37… Bearing part, 38… Permanent magnet, 39… Disc-shaped probe element, 40
...... Surface part, 41, 42 …… Stopper member, 43, 44 ……
Guidance path, 45 ……, steps, 46 ……, probe element, 47 ……, teeth,
48 …… notch, 49 …… tensile spring, 50 …… mounting pin, 52
...... Radial cavities, 53 ...... Retainer plates, 54
...... Push rod, 55 …… Head part, 56 …… Compression spring, 57 …… Support surface, 58 …… Skin layer, 58 ′ …… Tilting element, 59 …… Arm, 60 …… Permanent magnet, 61 ・ ・ ・… Axis, 62 ……
Bearing part, 63 …… Photoelectric sensor, 64 …… Pin,
65, 65 '... Edge of leaf spring, 66, 66' ... Leaf spring, 67 ...
… Base, 69, 69 '…… Tilt axis, 70… Intermediate part, 71 ……
Legs, 72 ... light source, 73 ... beam of light, 74 ... reflective surface

Front Page Continuation (56) References Japanese Patent Sho 39-915 (JP, B1) Japanese Public Sho 58-2899 (JP, B2) Actual Japanese Sho 50-42187 (JP, Y2)

Claims (26)

(57) [Claims] 1. A yarn storage / supply device comprising a stationary storage body (10, 11) having a drum shape on the surface of which a yarn storage portion is wound in the yarn feeding direction and the yarn is drawn upward ( In 1), the movable body is movably placed in the reservoir below the surface of the reservoir and moves between the first position (I) and the second position (II) depending on the yarn storage state. Flexible mechanical sensing member (28,2
8 ′, 28 ″, 39, 46), the size of the yarn accumulating portion in the axial direction of the reservoir is monitored, and at the first position (I), the detection member is the reservoir (10, 11). Projecting beyond the surface (15) of the sensor, and in the second position (II), the sensing member is flush with or below the surface (15) and from the second position. The load is applied in the direction toward the first position, and the storage body (10, 11)
Of the sensing element (20, 20 ', 21, 21', which responds to the position of the sensing member without contact at a predetermined radial distance from the surface (15) of
And 58), which is provided outside the storage body (10, 11) in substantially radial alignment with the detection member (28, 28 ', 28 ", 39, 46). Supply device. 2. The detection member (28 ') is made of a conductive or magnetic material such as metal, and the detection elements (20', 21 ') are in the region of the detection member (28'). The yarn accumulating / supplying device according to claim 1, which is a proximity sensor that generates a magnetic field, an electromagnetic field, or an eddy current field that is affected by a position change. 3. The detection member (28 ′, 28 ″) is an end portion (65, 65 ′) of a leaf spring (66) arranged in the reservoir, and the leaf spring (66) is relaxed. The yarn storage and supply device according to claim 1 or 2, wherein the yarn storage and supply device projects from the surface (15) of the storage body at a position. 4. A permanent magnet (2) is attached to the detection member (28, 39, 46).
9) is incorporated, the sensing element (20, 21, 58) is responsive to a change in magnetic field strength caused by a change in the position of the permanent magnet when the detecting member has a change in position. The yarn accumulating and supplying device according to claim 1. 5. The detection member with a force slightly larger than the force required to move most of the detection member (28) containing the permanent magnet (29) from one position to the other position. Is loaded, the yarn accumulating and supplying device according to claim 4. 6. The detection member (28, 28 ', 28 ") tilts in the storage portion around a tilt axis (36, 69) which is substantially parallel to the winding portion (27) in the detection region. The yarn accumulating / supplying device according to any one of claims 1 to 4, which is free. 7. The detecting member (28) is mounted on a bending spring (30), which is preferably rubber, according to any one of claims 1 to 6. The yarn storage and supply device described. 8. The tension spring (49) as the detection member (28).
The yarn accumulating / supplying device according to any one of claims 1 to 6, wherein the yarn accumulating and supplying device is biased substantially tangentially to the tilting shaft (36). 9. The sensing member (28, 39, 46) is free to move and the force exerting a load on the sensing member is applied by a second permanent magnet (38) fitted in the reservoir. The yarn accumulating and supplying device according to claim 4, characterized in that: 10. The detection member (28) has an inclined surface (32) with respect to the winding portion of the yarn (27), and the detection member (28) receives the force of a compression spring (56) with respect to the axis of the reservoir. The yarn accumulating and supplying device according to claim 1 or 4, wherein the yarn accumulating and supplying device displaces in the radial direction. 11. The detection member (39) is configured as an elliptical disk supported on a guide path (43) extending in the axial direction of the storage body so that the detection member (39) can roll. The yarn storage and supply device according to any one of claims 1, 4, and 10, which is characterized. 12. The detection member (39) is configured as a round disc supported on a guide path (44) having a step (45) so that the detection member (39) can roll. The yarn storage / supply device according to any one of claims 1, 4, and 10. 13. The guide path (43, 44) has a stopper member (41, 42) for catching the detection member (39, 46) at both the first and second positions. The yarn storage and supply device according to claim 11 or 12. 14. The surface (40) of the detection member is configured to protrude beyond the surface (15) of the reservoir to one position of the detection member (39, 46). The yarn storage and supply device according to claim 11 or 12. 15. A device according to claim 1 or 4, characterized in that the sensing element (20, 21) is a Hall element aligned with the sensing member (28, 39, 46). Yarn storage and supply device. 16. A switch device as the detection element comprises:
The detection member is rotatable about an axis (61) parallel to the tilt axis (36) and the permanent magnet (28) of the detection member.
And a permanent magnet (60) which has the same polarity as that of the sensor and responds to the tilt of the magnetic field of the detection member (28) by tilting operation, and has a switch element (63) such as a photoelectric switch member.
The yarn accumulating / supplying device according to any one of claims 1, 4, and 15, wherein the yarn accumulating / supplying device. 17. A patent characterized in that the upright force of the detection member (28) and the upright force of the tilting member (tilt element 58) are generated by the magnetic action of the two permanent magnets (29, 60). The yarn storage and supply device according to claim 16. 18. The detection member (28) has a block shape having a wedge-shaped tip (34), and is made of a plastic material in which the permanent magnet (29) is embedded. The yarn accumulating / supplying device according to the fourth item. 19. The detection member (28,28 ′, 28 ″, 39,46)
Claims 1-18, characterized in that it is provided in a recess (16,52) in the reservoir which conforms to the shape of the sensing element or a leaf spring (66) made of metal. 2. The yarn accumulating and supplying device according to any one of 1. 20. The dent (52) is sealed and covered by a thin outer cover (58) made of non-elastic plastic or the like, and the outer cover is arched at one position of the detection member,
The other position is flush with the surface (15) of the storage body, according to any one of claims 1-19.
The yarn storage and supply device according to the item. 21. Two detection members (28,28 ', 28 ", 39,46) for monitoring the minimum and maximum sizes of the yarn storage section,
The yarn accumulating and supplying device according to any one of claims 1 to 20, wherein the yarn accumulating and supplying device is arranged in front of and behind the storage body in the axial direction. 22. The metal leaf spring (66), wherein two detection members (28 ', 28 ") are bent into a substantially U shape with the end portions of the legs turned outward. Claim 3 characterized in that it is formed from both ends (65, 65 ').
The yarn storage and supply device according to the item. 23. The sensing member (28, 28 ') is provided with a light-reflecting characteristic or has a light-reflecting surface, and the sensing element (20 ", 20) is provided with the sensing element (20", 20). Light beam (7) reflected by member (28,28 ')
3I, 73II), which is an optical or photoelectric receiver arranged in a line with the direction of (3I, 73II).
The yarn storage and supply device according to any one of items 3, 6, 7, 8, 10, 11, 12, 13, 19, 21, and 22. 24. The sensing element (20 ″, 20 as a receiver
) Is aligned with one direction of the reflected light beam (73I, 73II) during movement of the sensing member (28, 28 ') at the two positions (I, II). The yarn accumulating / supplying device according to claim 23. 25. The receiver comprises the two positions (I, II).
In one or the other position, the detection member (28,2
Claim 8 characterized in that it is aligned with the direction of the light beams (73I, 73II) reflected by 8 ').
23. The yarn storage and supply device according to any one of 23 or 24. 26. A light source (72), preferably an infrared light source, fixedly provided on the outside of the reservoir has a light beam (2) directed to the detection member (28, 28 ').
3) is provided. Claim 23-2
The yarn storage and supply device according to any one of 5 above.