CN217536310U - Antenna station device - Google Patents

Abstract

The utility model provides an antenna platform device, it can improve detection mechanism's reliability and reduce manufacturing cost. The permanent magnet (31) is thin plate-shaped, magnetized in the thickness direction, and attached to the side surface of the housing (10). An electronic circuit board (11) on which the Hall element (32) is mounted with a gap from the side surface. The combination of the permanent magnet (31) and the Hall element (32) forms a sensor that is fixed in a state facing the gap. A shielding plate (34) which can advance and retreat relative to the gap in a non-contact mode at the front end side is formed into a rod shape by bending a ferromagnetic iron plate. The knitting yarn (2) passes through a gap between the detecting section (33 b) of the large detecting lever (33) and the guide plate (35). The adjustment handle (36) is rotated to adjust the gap. When the knitting yarn (2) passes through a knot (2 a) larger than the gap, the state of a tension detection section (33 b) is formed on the front side of the figure and is detected by a sensor.

Description

Antenna station device

Technical Field

The utility model relates to an antenna platform device of knitting yarn supply route setting at flat-bed machine.

Background

In a flat knitting machine, a knitting yarn for knitting a knitted fabric passes through a knitting yarn feeding path from a yarn package to a yarn feeder. The knitting yarn feeding path passes through an antenna base device disposed at an upper portion of a body of the flat knitting machine and a tension device disposed at a body side portion (see, for example, patent document 1). The antenna base device is provided with a tension arm, a knot catcher and a tension disc. The tension disc applies tension to the knitting yarn by sandwiching the knitting yarn. The tension arm has a function of monitoring the broken end, and the knot catcher has a function of monitoring the knot. A device having the same function is also disclosed as a yarn monitoring device for a flat knitting machine (see, for example, patent document 2). Although any patent document does not disclose a specific configuration for monitoring a broken end or a knotted end, a configuration is known in which a lever or a cam that is brought into contact with a knitting yarn and swings when a monitoring target is present is provided, and the swinging of the lever or the cam is detected by opening and closing of a contact of a micro switch.

[ Prior art documents ]

[ patent document ]

[ patent document 1 ] Japanese patent application laid-open No. 8-3844

[ patent document 2 ] Japanese patent application laid-open No. 9-170149

SUMMERY OF THE UTILITY MODEL

A microswitch uses a snap action mechanism using a conductive spring member, and is generally small in size and highly reliable as an electric component. However, in the case of monitoring the knitting yarn, although an external force acts on the micro switch via the lever or the cam as a monitoring target, the force that can act as the external force is small, and is easily affected by variations in electrical properties or physical properties due to individual differences of the micro switch. Since the detection mechanism of the monitoring target using the microswitch is configured to mechanically open and close the contact, there is also a possibility of damage, and the reliability is low. The opening and closing of the contacts requires an electronic circuit board for signal processing as well as for signal processing, but it is difficult to arrange the contacts so that the micro switch is directly mounted on the electronic circuit board. Further, the micro switch is large in size compared with an electronic component mounted on an electronic circuit board, and it is difficult to perform processing or assembly for performing highly accurate detection in a small space, and the manufacturing cost is high.

An object of the utility model is to provide an antenna platform device, it can improve detection mechanism's reliability to make manufacturing cost descend.

The utility model provides an antenna platform device which is arranged on the upper part of a flat knitting machine body and comprises a broken end detection mechanism for carrying out broken end detection and a knot detection mechanism for carrying out knot detection on a knitting yarn supply path from a yarn coil to a yarn feeding port,

at least one of the broken end detection mechanism and the knot detection mechanism comprises:

a sensor which faces a predetermined gap and can detect whether a detection object is present in the gap in a non-contact manner; and

the detection member has an advancing/retreating portion capable of advancing/retreating in a non-contact manner with respect to the gap facing the sensor, and a detection portion that comes into contact with the knitting yarn and detects the presence or absence of a cut or a knot as a detection target, and the advancing/retreating portion is advanced/retreated with respect to the gap in accordance with the detection of the detection target by the detection portion.

The utility model is characterized in that,

the sensor comprises a hall element and a permanent magnet,

the advancing and retreating portion of the detection member blocks the magnetic flux acting on the hall element from the permanent magnet in a state of entering the gap, and releases the blocking of the magnetic flux in a state of retreating from the gap.

The utility model is characterized in that,

the knot detection means comprises a plurality of knot detection means for detecting knots of different sizes,

when the knot is not detected, the advancing/retreating portion of the detection member is brought into the gap,

when the knot is detected, the advancing and retreating part of the detection member is set to be in a state of retreating from the gap,

the knot detection mechanism corresponding to the large knot further comprises a spring.

The utility model is characterized in that,

the advancing/retreating portion of the detection member interrupts the magnetic flux by an end portion in a state of entering the gap between the permanent magnet and the hall element.

The utility model is characterized in that,

the broken end detection mechanism includes a swing shaft and an arm as the detection member, the swing shaft side of the arm is a base end, a tip end of the arm is capable of swinging around the swing shaft,

the detection part is arranged at the front end of the arm and can catch knitting yarn,

the advancing and retreating portion is provided so as to be swingable about a swing shaft in the same manner as the arm,

when the detecting portion catches the knitting yarn, the advancing and retreating portion is in a state of retreating from the gap, and when the catching of the knitting yarn by the detecting portion is released, the advancing and retreating portion is in a state of entering the gap.

[ Utility model effect ] is provided

According to the present invention, the broken end detection mechanism or the knot detection mechanism advances and retreats relative to the gap facing the sensor in the advancing and retreating portion of the detection member in response to the presence or absence of the knot or the broken end of the knitting yarn detected by the detection portion of the detection member. Since the advance and retreat can be detected by the sensor in a non-contact manner, the sensor can be fixed by the breakage detecting mechanism or the knot detecting mechanism, reliability is improved, miniaturization is realized, and manufacturing cost is reduced.

According to the present invention, the detection member is moved forward and backward with respect to the gap in which the magnetic flux generated by the permanent magnet is received by the hall element, and the magnetic flux is blocked by the movement of the detection member, and the blocking of the magnetic flux is released by the movement of the detection member. The sensor detects a change in magnetic flux, and therefore can be less susceptible to the effects of dust adhesion and the like. Since the magnetic flux is generated from the permanent magnet, power supply is not required, and cost reduction can be achieved.

According to the present invention, since the advancing/retreating portion of the detection member receives the magnetic attraction force when entering the gap where the sensor faces, the detection member can be restored by the attraction force as a state when the knot is not detected. When a large knot is detected, the state in which the advancing and retreating portion retreats from the gap can be maintained by the spring, and the return to the undetected state can be avoided.

According to the utility model discloses, can utilize the magnetic flux to concentrate on the characteristic of tip easily.

According to the utility model discloses, broken end detection mechanism can carry out the detection of broken end with high and low-cost reliability.

Drawings

Fig. 1 is a simplified front view showing an overall configuration of an antenna station apparatus 1 according to an embodiment of the present invention.

Fig. 2 is a left side sectional view of the large knot detecting mechanism 13 as viewed from a section line II-II of fig. 1.

Fig. 3 is a partial front view showing the operation of the large knot detection mechanism 13 in fig. 1.

Fig. 4 is a simplified front view showing the configuration and operation of the breakage detection mechanism 14 shown in fig. 1.

Fig. 5 is a simplified front view showing the configuration of the housing 10 of fig. 1.

[ Mark Specification ]

1. Antenna station device

2. Knitting yarn

10. Shell body

11. Electronic circuit board

12. Small knot detection mechanism

13. Large knot detection mechanism

14. Broken end detection mechanism

21 31, 41 permanent magnet

22 32, 42 Hall element

23. Small detection rod

23a,33a,43a oscillating shaft

23b,33b,43b detection part

24 34, 44 shielding plate

25 35 guide plate

33. Large detection rod

37. Plate spring

43. Detection arm

46. Advancing and retreating arm

Detailed Description

Hereinafter, fig. 1 to 5 relate to a configuration and an operation of an antenna base apparatus 1 according to an embodiment of the present invention. Corresponding parts in the drawings are denoted by the same reference numerals, and redundant description may be omitted. For convenience of explanation, parts not shown in the drawings to be explained may be referred to by reference numerals shown in other drawings.

[ examples ] A method for producing a compound

Fig. 1 shows a schematic front structure of an antenna base device 1 according to an embodiment of the present invention. The antenna base device 1 is provided at an upper portion of a body of the flat knitting machine, and is a part of a knitting yarn feeding path from a yarn package as a feeding source of the knitting yarn 2 to a yarn feeder to be fed to a knitting needle. For simplicity of illustration, the entire structure of the weft knitting machine and the like are not illustrated. The antenna base device 1 includes an electronic circuit board 11 incorporated in a housing 10, and 2 detection mechanisms for detecting a size of a knot generated in a knitting yarn 2. That is, the antenna base device 1 includes a small end detection means 12 and a large end detection means 13, and when a small end is detected, the knitting speed is reduced to knit the end into the knitted fabric, and when a large end is detected, the knitting is stopped and the operator waits for the repair. The antenna base device 1 further includes a broken end detection mechanism 14 and a tension plate 15 for applying tension to the knitting yarn 2. The yarn breakage detection means 14 detects the breakage of the knitting yarn 2, stops knitting when the detection is made, and waits for repair. The electronic circuit board 11 electrically processes the detection results of the small end detection mechanism 12, the large end detection mechanism 13, and the broken end detection mechanism 14, and supplies the processing results to the control device of the flat knitting machine. A portion including the electronic circuit board 11 above the knitting yarn 2 is covered with a cover, not shown.

The small knot detecting means 12, the large knot detecting means 13, and the broken end detecting means 14 include a combination of the permanent magnets 21, 31, 41 and the hall elements 22, 32, 42 as a sensor, and include the small detecting lever 23, the large detecting lever 33, and the detecting arm 43 as a detecting member. The sensor is mounted with a gap provided in an inward direction of the drawing between the permanent magnets 21, 31, 41 and the hall elements 22, 32, 42. Such a sensor faces the gap as a predetermined gap, and can detect whether or not the ferromagnetic material to be detected is present in the gap in a non-contact manner. The small detection lever 23, the large detection lever 33, and the detection arm 43 have detection portions 23b,33b, and 43b on the distal end side that swing with the swing shafts 23a,33a, and 43a on the proximal end side as fulcrums. The detecting portions 23b and 33b do not contact the knitting yarn 2 in normal times. When the knot is greater than or equal to a predetermined size, the knot strongly contacts and hooks the detection portions 23b and 33b, and the small detection lever 23 or the large detection lever 33 swings counterclockwise in the figure. The detecting portion 43b of the detecting arm 43 is held at the position in the figure in a state of catching the knitting yarn 2 if there is no end breakage, and the detecting arm 43 swings clockwise in the figure if catching of the knitting yarn 2 is released due to the end breakage. Thus, the small detection lever 23, the large detection lever 33, or the detection arm 43 detects the presence or absence of a knot or a broken end as a detection target. Shielding plates 24, 34, and 44 are provided on the inner side of the drawings on the base end sides of the small detection lever 23, the large detection lever 33, and the detection arm 43 with the swing shafts 23a,33a, and 43a interposed therebetween. The shield plates 24, 34, and 44 are made of ferromagnetic material and can advance and retreat as advancing and retreating portions in a noncontact manner with respect to the gap facing the sensor. The knitting yarn 2 fed from the yarn package is fed from the right side of the figure to the tension device and the yarn feeder from the left side of the figure by capturing the detecting portion 43b of the knitting yarn 2 by the tension disc 15, the detecting portion 33b of the large detecting lever 33, the detecting portion 23b of the small detecting lever 23, and the detecting arm 43.

The detecting portions 23b,33b of the small detecting lever 23 and the large detecting lever 33 that detect the presence or absence of the knot of the knitting yarn 2 face the guide plates 25, 35 attached to the housing 10 with a gap therebetween. The guide plates 25 and 35 are formed by bending a metal plate so as to protrude as portions facing the small detection rod 23 and the large detection rod 33. The gaps between the guide plates 25 and 35 and the small detection lever 23 and the large detection lever 33 are respectively matched with joints having a predetermined size, and are adjusted by the adjustment knobs 26 and 36 from the back side of the housing 10. A leaf spring 37 that performs the operation described in fig. 3 is provided below the swing shaft 33a of the large detection lever 33. The detection arm 43 is made of resin, and the detection portion 43b and the swing shaft 43a pass through the inside of the figure. The base end side of the detection arm 43 is integrally formed with an advancing/retreating arm 46 on the front side of the view with respect to the swing shaft 43 a. The shield plate 44 is embedded in the advancing/retreating arm 46 to form an advancing/retreating portion. The retractable arm 46 may be separate from the detection arm 43, or the shield plate 44 may be provided so as to be directly swingable around the swing shaft 43a without the retractable arm 46. In any case, the advancing and retreating portion including the shielding plate 44 is provided swingably about the swing shaft 43a, similarly to the detection arm 43. The advance/retreat arm 46 is supported by a spring 47 for buffering against a wall surface of the housing 10. The structure of the knot detecting means 13 will be further described with reference to fig. 2, which is a cross-sectional structure viewed from a section line II-II.

Fig. 2 shows the structure of the large knot detection means 13, but the structure of the small knot detection means 12 is basically the same except for the plate spring 37. The permanent magnet 31 is thin plate-shaped, magnetized in the thickness direction, and attached to the side surface of the housing 10. The electronic circuit board 11 on which the hall element 32 is mounted with a gap from the side surface. Thus, the sensor constituted by the combination of the permanent magnet 31 and the hall element 32 is fixed in a state of facing the gap. The shield plate 34, the tip end side of which can advance and retreat with respect to the gap, is formed in a rod shape by bending a ferromagnetic iron plate, and the base end side thereof is connected to the swing shaft 33a of the large detection rod 33. The large detection lever 33 has a swinging shaft 33a made of resin and a detection portion 33b made of metal. The knitting yarn 2 passes through a gap between the detecting portion 33b of the large detecting lever 33 and the guide plate 35. The gap can be adjusted by rotating the adjustment knob 36. If the knot 2a larger than the gap exists in the knitting yarn 2, the knot 2a is in a state of being pulled in the front side pull-up detecting portion 33b in the figure by the passage of the knitting yarn 2. It is preferable that the housing 10 be provided with a support projection 10a for supporting the shield plate 34 from the rear surface side.

Fig. 3 shows the operation of the large knot detecting mechanism 13. The left side shows an undetected state where there is no knot in the knitting yarn 2 or even if there is a knot, the undetected state is smaller than the gap between the detecting section 33b and the guide plate 35. The right side shows a state where the knot 2a as the detection object is present. The large detection lever 33 hangs down substantially vertically in a non-detection state. In the undetected state, the end of the shielding plate 34 is set so as to block the magnetic flux from the permanent magnet 31 to the hall element 32. Although the permanent magnet 31 may be moved without using the shielding plate 34, the change in the magnetic flux received by the hall element 32 when the hall element starts moving from the stationary state is small, and the detection sensitivity is deteriorated. In the present embodiment, the edge effect of the shielding plate 34 made of a ferromagnetic material, that is, the characteristic that magnetic flux is easily concentrated at the end portion is also utilized, so that the change in the electric output from the hall element 32 is increased, and a small movement of the shielding plate 34 is easily detected. If the knot 2a to be detected is present, the detection portion 33b is pressed to the left side in the figure, and the large detection lever 33 is tilted. Even if the knot 2a is smaller than the gap, it may be hooked on the detecting portion 33b, but while the detecting portion 33b is pressed leftward and the large detection lever 33 is tilted, the hooked knot 2a is disengaged from the detecting portion 33b and is separated, and the large detection lever 33 returns to the vertical. When the knot 2a is larger than the gap, the knot is pushed to the left end of the guide plate 35 and then the detection part 33b is disengaged. The plate spring 37 has a projection 37a at the center, and the projection 37a contacts a projection 33c provided on the pivot shaft 33a of the large detection lever 33. If the knot 2a is not large, even if the knot 2a is hooked on the detection portion 33b and the large detection lever 33 is inclined, the protrusion 33c stays at the protrusion 37a, the knot 2a is disengaged, and the large detection lever 33 is returned from the inclined state to the vertical state. In the detection of the large knot 2a, the large detection lever 33 inclines so that the protrusion 33c goes over the protrusion 37a, and the protrusion 33c does not go over the protrusion 37a and stays when the inclination returns after the knot 2a is disengaged. Such a state in which the large knot 2a is detected is a state in which the shield plate 34 is withdrawn from the gap facing the sensor, and is held by the plate spring 37 even after the knot 2a is detached, so that the knot can be prevented from returning to an undetected state.

In the small knot detecting mechanism 12, the plate spring 37 is not used, and the gap between the detecting part 23b and the guide plate is small. The knot passing through the gap is used as a knot which does not obstruct the knitting, and the knitting is continued. When the knot 2a detected by the small knot detecting means 12 is not detected by the large knot detecting means 13, knitting is continued by, for example, reducing the operating speed of the flat knitting machine. Since the shield plate 24 receives a magnetic attraction force when it enters the gap where the sensor faces, it can be restored by the attraction force as a state when the knot is not detected. Instead of the hall elements 22 and 32, magnetoresistive elements may be used. Since the shielding plates 24 and 34 are moved forward and backward with respect to the gaps in which the magnetic fluxes generated by the permanent magnets 21 and 31 are received by the hall elements 22 and 32, etc., and the magnetic fluxes are blocked by the movement, the blocking of the magnetic fluxes is released by the movement, the presence or absence of the detection target can be easily reflected in the electric signal with good responsiveness. Since the sensor detects a change in magnetic flux, it is less likely to be affected by adhesion of dust and the like, and can be directly mounted on the electronic circuit board 11, and therefore, downsizing and cost reduction can be achieved. Since the magnetic flux is generated from the permanent magnets 21 and 31, power supply is not necessary, and cost reduction can be achieved.

Fig. 4 shows the structure and operation of the disconnection detecting mechanism 14 shown in fig. 1. The upper side shows an undetected state in which the knitting yarn 2 passes without breaking, and the lower side shows a detected state in which the breaking is detected. In the undetected state, the detecting part 43b is the knitting yarn 2 is pulled up in a state of being caught, the detection arm 43 is in a substantially horizontal state. The shielding plate 44 is separated from the gap between the permanent magnet 41 and the hall element 42. That is, when the detecting portion 43a catches the knitting yarn 2, the advancing-retreating portion is in a state of retreating from the gap. In the detection state where the knitting yarn 2 is broken, the catching of the knitting yarn 2 by the detecting portion 43b is released, the detecting arm 43 is tilted by swinging counterclockwise by its own weight, and the shielding plate 44 enters the gap. In the breakage detection mechanism 14, the permanent magnet 41 is also mounted on the side surface of the case 10, and the hall element 42 is mounted on the electronic circuit board 11, which is not shown. Therefore, in the present embodiment, the small end detection means 12, the large end detection means 13, and the broken end detection means 14 use sensors that detect magnetic fluxes generated from the permanent magnets 21, 31, and 41 by the hall elements 22, 32, and 42. As another sensor, a sensor that can detect by another non-contact method, for example, an optical sensor, may be used instead. In the optical detection, the detection method of blocking the gap between the light emitting side and the light receiving side is more responsive than the detection method of relatively moving the light emitting side and the light receiving side. However, the optical sensor is susceptible to the influence of dirt adhesion or the like, and dividing the light emitting side and the light receiving side requires a large number of electrical connections.

Fig. 5 shows the configuration of the housing 10 of fig. 1. The permanent magnets 21, 31, 41 are attached to the side surfaces, and stable magnetic flux can be generated even if there is no electrical connection. The support convex portion 10a is provided for the small knot detecting means 12 and the large knot detecting means 13, and the shield plates 24 and 34 can be supported to perform stable operation. The insertion hole 10b is provided for using the adjustment handles 26 and 36. When the detecting portion 43b is raised by the vertical movement of the knitting yarn 2, the spring 47 alleviates the impact with the end of the housing 10 so as not to increase even if the advancing/retreating arm 46 swings clockwise.

In the present embodiment, the detection of the knot 2a is performed in one stage in one detection means in two stages of the small knot detection means 12 and the large knot detection means 13, but the number of stages can be further increased. Since the hall elements 22 and 32 are small, the difference in the inclination angles of the small detection lever 23 and the large detection lever 33 can be detected by disposing the hall elements at a plurality of different positions with respect to the permanent magnets 21 and 31, whereby the difference in the size of the knot 2a can be detected in a plurality of stages by one detection mechanism. Further, in the detection of the knot 2a, the magnitude of the detection may be adjusted by utilizing the presence or absence of the plate spring 37 provided in the large knot detection means 13 and the difference in characteristics such as a spring load.

Claims (6)

1. An antenna stand device provided at an upper portion of a body of a flat knitting machine, including a yarn breakage detecting mechanism for detecting a yarn breakage and a yarn end detecting mechanism for detecting a yarn end on a knitting yarn feeding path from a yarn package to a yarn feeder,

at least one of the broken end detection mechanism and the knot detection mechanism comprises:

a sensor which faces a predetermined gap and can detect whether a detection object is present in the gap in a non-contact manner; and

the detection member has an advancing/retreating portion capable of advancing/retreating in a non-contact manner with respect to the gap facing the sensor, and a detection portion that comes into contact with the knitting yarn to detect the presence or absence of a cut or a knot as a detection target, and the advancing/retreating portion is advanced/retreated with respect to the gap in accordance with the detection of the detection target by the detection portion.

2. Antenna station arrangement according to claim 1,

the sensor comprises a hall element and a permanent magnet,

the advancing and retreating portion of the detection member blocks the magnetic flux acting on the hall element from the permanent magnet in a state of entering the gap, and releases the blocking of the magnetic flux in a state of retreating from the gap.

3. Antenna station arrangement according to claim 2,

the knot detection means includes a plurality of knot detection means for detecting knots of different sizes,

when the knot is not detected, the advancing/retreating portion of the detection member is brought into the gap,

when the knot is detected, the advancing and retreating part of the detection member is set to be in a state of retreating from the gap,

the knot detection mechanism corresponding to the large knot further comprises a spring.

4. Antenna station arrangement according to claim 2,

the advancing/retreating portion of the detection member interrupts the magnetic flux by an end portion in a state of entering the gap between the permanent magnet and the hall element.

5. Antenna station arrangement according to claim 3,

the advancing/retreating portion of the detection member interrupts the magnetic flux by an end portion in a state of entering the gap between the permanent magnet and the hall element.

6. The antenna station apparatus according to any one of claims 1 to 5,

the broken end detecting mechanism includes a swing shaft and an arm as the detecting member, a swing shaft side of the arm is a base end, a tip end of the arm is swingable around the swing shaft,

the detection part is arranged at the front end of the arm and can catch knitting yarn,

the advancing and retreating portion is provided so as to be swingable about a swing shaft in the same manner as the arm,

when the detecting portion catches the knitting yarn, the advancing and retreating portion is in a state of retreating from the gap, and when the catching of the knitting yarn by the detecting portion is released, the advancing and retreating portion is in a state of entering the gap.

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