CN110714262A

CN110714262A - Weft accumulator sensing assembly and weft accumulator

Info

Publication number: CN110714262A
Application number: CN201911067716.2A
Authority: CN
Inventors: 徐建良
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-01-21
Anticipated expiration: 2039-11-05
Also published as: CN110714262B

Abstract

The invention discloses a weft accumulator sensing assembly and a weft accumulator, which comprise a sensor seat, a short feeler lever, a middle feeler lever, a long feeler lever, detection contact sheets and a motor control panel, wherein three groups of photoelectric sensors are arranged on the motor control panel, a mounting groove is arranged on the upper side of the sensor seat, the short feeler lever, the middle feeler lever and the long feeler lever are arranged in the mounting groove in parallel, the middle parts of the short feeler lever, the middle feeler lever and the long feeler lever are hinged with the left side of the mounting groove through rotating pins, the left side, the middle part and the right side of the bottom of the mounting groove are respectively provided with a left feeler hole, a middle feeler hole and a right feeler hole, one ends of the right ends of the short feeler lever, the middle feeler lever and the long feeler lever, which are positioned in the mounting groove, are respectively connected with the detection contact sheets, the detection contact sheets downwards correspondingly penetrate through the left feeler. The on-off and the rotating speed of the motor are controlled by detecting the state sensed by the contact pieces at the right ends of the short probe rod, the middle probe rod and the long probe rod.

Description

Weft accumulator sensing assembly and weft accumulator

Technical Field

The invention belongs to the technical field of bags and bags, and particularly relates to a weft accumulator sensing assembly and a weft accumulator.

Background

At present, the fixed drum type weft accumulator at home and abroad basically adopts the technology similar to CN99200896.4, the number of parts is less, and the structure is more compact. However, with the development of high-elastic fabrics of a novel large circular knitting machine, the original drum type yarn feeder specially matched with the circular knitting machine cannot meet the requirements, and a fixed drum type weft accumulator with higher performance is required to be adopted to adapt to the manufacture of high-elastic spandex yarns. In addition, due to the improvement of the weft insertion rate of the economical rapier loom, the originally large number of matched drum type weft accumulators are more and more difficult to meet the increasing requirements, and a plurality of novel economical rapier looms have to select the large fixed drum type weft accumulators with high price. In fact, the requirements of the circular loom and the economical rapier loom on the weft supply rate of the weft accumulator are not very high except for high requirements on tension stability, twist change and yarn stacking, but are only slightly higher than the highest speed of the movable drum type weft accumulator and far lower than the upper limit of the weft supply rate of the fixed drum type weft accumulator. Especially, the circular knitting machine is limited by space, and a large number of large fixed drum type weft accumulators cannot be installed at all. The technical problem of further reducing the volume is also existed due to the structural limitation of the traditional fixed drum type weft accumulator.

The winding amount detection device for the electronic weft accumulator is arranged in an electronic weft accumulator seat body, a driving mechanism is arranged in the middle of the inside of the electronic weft accumulator seat body, a turntable of a yarn guide channel is arranged at the other end of the electronic weft accumulator seat body, the driving mechanism and the turntable are both arranged on a hollow shaft, the hollow shaft is arranged in the electronic weft accumulator seat body through a bearing, weft yarns are led out from a port of an outlet ceramic yarn guide piece through a middle hole of the hollow shaft and the yarn guide channel in the turntable, the led weft yarns are wound and stored in the yarn storage mechanism, a Hall sensor is fixedly arranged on the electronic weft accumulator seat body, and a plurality of magnetic steel matched with the Hall sensor is coaxially fixed on the hollow shaft. The magnetic steel is not only a trigger magnetic field for triggering the Hall element, but also a part for generating detection pressure, and the detection pressure is difficult to adjust. If the detection pressure is changed, the trigger magnetic field of the Hall element is changed at the same time, and the detection failure of the Hall element is possibly caused.

Disclosure of Invention

The invention aims to solve the technical problem of providing a weft accumulator sensing assembly and a weft accumulator.

The invention is realized in such a way, and provides a weft accumulator sensing assembly, which comprises a sensor seat, a short probe rod, a middle probe rod, a long probe rod, a detection contact piece and a motor control panel, wherein three groups of photoelectric sensors are arranged on the motor control panel, a mounting groove is arranged on the upper side of the sensor seat, the short probe rod, the middle probe rod and the long probe rod are arranged in the mounting groove in parallel, the middle parts of the short probe rod, the middle probe rod and the long probe rod are hinged with the left side of the mounting groove through rotating pins, the left side, the middle part and the right side of the bottom of the mounting groove are respectively provided with a left probe hole, a middle probe hole and a right probe hole, one ends of the right ends of the short probe rod, the middle probe, and each detection contact piece downwards respectively and correspondingly penetrates through the left probing hole, the middle probing hole and the right probing hole, the left ends of the short probing rod, the middle probing rod and the long probing rod are respectively provided with a blocking piece, and each blocking piece is respectively and correspondingly arranged above the space between the transmitter and the receiver of the three groups of photoelectric sensors.

Furthermore, the mounting groove upper cover is equipped with the closing cap, and the downside of closing cap is equipped with buffer spring piece, and buffer spring piece includes the main part and is connected and three group's reeds that correspond respectively with short probe rod, well probe rod and long probe rod right-hand member upside with the main part, and the main part is connected with the closing cap.

Furthermore, two spiral holes are respectively arranged on the sealing cover, one of the spiral holes is opposite to the end, connected with the main body, of the reed corresponding to the short feeler lever, the other spiral hole is opposite to the right side of the main body, the reed corresponding to the middle feeler lever and the long feeler lever is connected with the right side of the main body, the left side of the main body is connected with the sealing cover, the spiral holes are respectively screwed with a spiral shaft, a reset spring is sleeved between one end of the lower side of the spiral shaft and the sealing cover, the upper end of the reset spring is connected with an adjusting knob, and the axial position of the spiral shaft.

Furthermore, the left side of the mounting groove is provided with an adjusting component with an adjustable longitudinal position, and the middle parts of the short probe rod, the middle probe rod and the long probe rod are hinged with the adjusting component through rotating pins.

Furthermore, the adjusting assembly comprises a longitudinal adjusting block, a longitudinal adjusting screw rod, a reset spring and an adjusting support frame, the longitudinal adjusting block is connected with the mounting groove in a longitudinal guiding mode, a containing groove is formed in the lower end of the longitudinal adjusting block, a rotating pin penetrates through the two ends of the short probe rod, the middle probe rod and the long probe rod after the middle of the two ends of the two.

Furthermore, the upper sides of the left ends of the short probe rod, the middle probe rod and the long probe rod are respectively provided with a gravity block.

Furthermore, the left ends of the short probe rod, the middle probe rod and the long probe rod are downwards provided with connecting pieces, and one end of each blocking piece is connected to the left side or the right side of each connecting piece.

Furthermore, the right ends of the short probe rod, the middle probe rod and the long probe rod are respectively provided with a longitudinal jack, the upper ends of the detection contact pieces are respectively provided with an insertion part, the insertion parts are inserted into the longitudinal jacks, and the end parts of the right ends of the short probe rod, the middle probe rod and the long probe rod are respectively and obliquely screwed into screws downwards to enable the insertion parts to be connected into the longitudinal jacks in a positioning mode.

Furthermore, through holes are respectively arranged on the motor control board at the lower side between the transmitter and the receiver of each photoelectric sensor,

the utility model provides an use weft accumulator of weft accumulator sensing subassembly, including the motor protective housing, including a motor, an end cap, a controller, and a cover plate, the winding dish, store up the yarn drum, the guard shield, the motor sets up in the motor protective housing, motor protective housing right side is equipped with the winding dish, and with the storage yarn drum that is connected around the yarn dish, motor protective housing upside is connected with the guard shield to storing up yarn drum top, sensor seat connection is in the guard shield, motor control board connects and leans on motor protective housing one side in the guard shield, the control end and the motor control board electric connection of motor, the short feeler lever, the detection contact of well feeler lever and long feeler lever right-hand member is visited the hole by a left side, well feeler hole and right feeler hole are visited and are distributed in the radial upside that stores up the yarn drum.

Furthermore, the middle part of the motor protective shell is provided with an inward arc-shaped notch convenient to take.

Furthermore, a yarn inlet is formed in the left end of the motor protective shell, a hollow spindle of the motor is located in the yarn inlet, and a sealing check ring is packaged between the yarn inlet and the hollow spindle.

Compared with the prior art, the weft accumulator sensing assembly and the weft accumulator detect the states sensed by the contact pieces through the short feeler lever, the middle feeler lever and the right end of the long feeler lever, the blocking pieces at the left ends of the short feeler lever, the middle feeler lever and the long feeler lever are respectively matched with the three groups of photoelectric sensors on the motor control board, and the motor control board is electrically connected with the motor, so that the on-off and the rotating speed control of the motor are controlled by sensing different states of the three groups of photoelectric sensors;

the distance between each reed and the right ends of the short feeler lever, the middle feeler lever and the long feeler lever is controlled by adjusting the position of each reed on the buffer spring piece, so that the phenomenon that each detecting contact piece greatly jumps when yarn is discharged, a given signal is unstable, and a motor control board cannot accurately judge the running state is avoided;

when yarn is discharged, the detection contact piece is driven to swing until the left end baffle of the short probe rod, the middle probe rod or the long probe rod swings to the photoelectric sensor at the corresponding position, namely the baffle swings to a position between a transmitter and a receiver of the photoelectric sensor, so that the photoelectric sensor receives signals, and a motor control panel makes corresponding motor control signals to control the on, off and rotating speed of the motor;

the middle parts of the short feeler lever, the middle feeler lever and the long feeler lever are hinged with the adjusting component through rotating pins, and the adjusting component can adjust the longitudinal position, so that the distances between the short feeler lever, the middle feeler lever and the long feeler lever and the buffer spring piece and between the short feeler lever, the middle feeler lever and the long feeler lever and the yarn storage drum are further integrally adjusted, the use of different yarns is met, the redundant swing of the feeler lever when the weft accumulator uses spun yarns or rough yarns can be avoided, the weft accumulator can stably run, and the tension of the yarns is constant.

The gravity block is arranged for adjusting the detection sensitivity of the short probe rod, the middle probe rod and the long probe rod;

the right end parts of the short probe rod, the middle probe rod and the long probe rod are respectively and obliquely screwed downwards into screws so that the insertion parts of the detection contact pieces are positioned and connected into the longitudinal jacks, so that the insertion parts of the detection contact pieces and the corresponding longitudinal jacks can be effectively prevented from being deviated, the service life is prolonged, the longitudinal jacks at the right end parts of the short probe rod, the middle probe rod and the long probe rod are effectively prevented from being damaged, and unstable or ineffective sensing reaction caused by fluctuation of the insertion parts of the detection contact pieces is avoided;

one end of each detection contact piece, which is close to the yarn storage drum, is arc-shaped, and the arc-shaped faces the right side of the yarn storage drum, namely the yarn outlet direction, so that yarn outlet is smoother;

through holes are respectively formed in the motor control board on the lower side between the transmitter and the receiver of each photoelectric sensor, and the purpose of the through holes is to prevent the blocking pieces at the left ends of the short probe rod, the middle probe rod and the long probe rod from touching the motor control board when jumping, but the blocking pieces can penetrate through the through holes.

The setting of sealing ring, its aim at weft accumulator during operation prevents that water, oil, dust etc. on the yarn from getting into in the motor protective housing through the clearance between yarn mouth and the hollow main shaft to the protection motor is not burnt out, guarantees the normal operating of motor.

Drawings

FIG. 1 is a schematic plan view showing the connection of the feelers and the related parts of the pick storer sensor assembly according to the present invention;

FIG. 2 is a schematic view of the probe of FIG. 1 after the probe is separated;

FIG. 3 is a schematic view of the positions of the probes and the photoelectric sensors on the motor control board in FIG. 1;

FIG. 4 is a schematic view of the probe contacts of FIG. 1 connected to the right ends of the probe rods;

FIG. 5 is a schematic cross-sectional view of the pick storer sensing assembly;

FIG. 6 is an enlarged view of the direction A in FIG. 5;

FIG. 7 is a schematic view showing the positions of the probes and the buffer springs on the cover in FIG. 5;

FIG. 8 is a view of the buffer spring plate shown in FIG. 7;

FIG. 9 is a schematic perspective view of a weft accumulator sensor assembly;

FIG. 10 is a schematic view of the motor control board and the positions of the photo-sensors shown in FIG. 5;

FIG. 11 is a schematic perspective view of the weft accumulator;

fig. 12 is a schematic structural view of fig. 11.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1: please refer to fig. 1-12. The invention discloses a weft accumulator sensing assembly which comprises a sensor seat 1, a short probe rod 2, a middle probe rod 3, a long probe rod 4, detection contact sheets 5 and a motor control board 6, wherein three groups of photoelectric sensors 7 are arranged on the motor control board 6, a mounting groove 11 is arranged on the upper side of the sensor seat 1, the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are arranged in the mounting groove 11 in parallel, the middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are hinged with the left side of the mounting groove 11 through rotating pins 7, the corresponding middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are provided with through holes 10 through which the rotating pins 7 can conveniently penetrate, the left probe hole 110, the middle probe hole 111 and the right probe hole 112 are respectively arranged on the left side, the middle part and the right side of the bottom of the mounting groove 11, one ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4, which are positioned in the mounting groove 11, And the middle detecting hole 111 and the right detecting hole 112, and the left ends of the short detecting rod 2, the middle detecting rod 3 and the long detecting rod 4 are respectively provided with a baffle 8, and each baffle 8 is respectively and correspondingly arranged above the space between the transmitter 71 and the receiver 72 of the three groups of photoelectric sensors 7. The blocking pieces at the left ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are respectively matched with the three groups of photoelectric sensors 7 on the motor control board 6, and the motor control board 6 is electrically connected with the motor 30, so that the on-off and the rotating speed control of the motor 30 are controlled by sensing different states of the three groups of photoelectric sensors 7; when yarn is discharged, the detection contact piece 5 is driven to swing until the left end baffle of the short probe rod 2, the middle probe rod 3 or the long probe rod 4 swings to the photoelectric sensor 7 at the corresponding position, the baffle 8 swings to a position between the transmitter 71 and the receiver 82 of the photoelectric sensor 7, and the photoelectric sensor 7 receives signals and the motor control board 6 makes corresponding motor control signals to control the on/off and rotating speed control of the motor 30;

the cover 9 is covered on the mounting groove 11, the buffer spring piece 12 is arranged on the lower side of the cover 9, the buffer spring piece 12 comprises a main body 121 and three groups of reeds 122 which are connected with the main body 121 and respectively correspond to the upper sides of the right ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4, and the main body 121 is connected with the cover 9.

Two spiral holes 91 are respectively arranged on the sealing cover 9, wherein one spiral hole 91 is opposite to the end of the reed 122 corresponding to the short probe rod 2, which is connected with the main body 121, the other screw hole 91 is opposite to the right side of the main body 121, the middle probe rod 3 and the long probe rod 4 are connected with the right side of the main body 121 corresponding to the spring leaves 122, the left side of the main body 121 is connected with the sealing cover 9, the screw holes 91 are respectively screwed with the screw shafts 92, a return spring 93 is sleeved between one end of the lower side of the screw shafts 92 and the sealing cover 9, the upper end of the screw shaft is connected with an adjusting knob 94, the axial position of the screw shaft 92 is adjusted by rotating the adjusting knob 94 to adjust the position of each reed 122, namely, the distances between each reed 122 and the right ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are controlled, so that the phenomenon that each detecting contact piece 5 greatly jumps when yarn is discharged, so that the given signal is unstable, and the motor control board 6 cannot accurately judge the running state is avoided;

the left side of the mounting groove 11 is provided with an adjusting component 13 with adjustable longitudinal position, and the middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are hinged with the adjusting component 13 through a rotating pin 14. The middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are hinged with the adjusting component 13 through the rotating pin 14, wherein the adjusting component 13 can adjust the longitudinal position, so that the distances between the short probe rod 2, the middle probe rod 3 and the long probe rod 4 and the buffer spring piece 12 and the distance between the long probe rod and the yarn storage drum 50 can be further integrally adjusted, the use requirements of different yarns can be met, the redundant swing of each probe rod of the weft accumulator when spun yarns or rough yarns are used can be avoided, the weft accumulator can stably run, and the yarn tension is constant.

The adjusting assembly 13 comprises a longitudinal adjusting block 131, a longitudinal adjusting screw 132 and an adjusting support frame 133, the longitudinal adjusting block 131 is longitudinally guided and connected with the mounting groove 11, the lower end of the longitudinal adjusting block 131 is provided with an accommodating groove 130, the rotating pin 14 penetrates through the middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4, the two ends of the rotating pin 14 are connected with the longitudinal adjusting block 131, the middle parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are positioned in the accommodating groove 130, the adjusting support frame 133 is arranged above the left side of the mounting groove 11, the middle part of the adjusting support frame 133 is provided with a screw hole 134, the lower end of the longitudinal adjusting screw 132 is connected with the middle part of the longitudinal adjusting block 131, the upper end of the longitudinal adjusting screw is connected with the screw hole 134, and the longitudinal adjusting screw 142 is driven by the longitudinal adjusting screw; the two sides of the lower end of the longitudinal adjusting block 131 are respectively abutted against the bottom of the sensor seat 1 through a return spring 134, so that the longitudinal adjusting block 131 is always kept stable in the adjusting process. And the upper sides of the left ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are respectively provided with a gravity block 15. The left ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are downwards provided with a connecting piece 16, and one end of the baffle 8 is connected to the left side or the right side of the connecting piece 16.

The right ends of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are respectively provided with a longitudinal jack 17, the upper ends of the detection contact pieces 5 are respectively provided with an insertion part 51, the insertion parts 51 are inserted into the longitudinal jacks 17, and the right end parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are respectively and obliquely screwed into the screws 18 downwards so that the insertion parts 51 are positioned and connected into the longitudinal jacks 17. The screws 18 are screwed into the right end parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 respectively in an inclined downward mode to enable the inserting parts 51 of the detection contact pieces 5 to be connected in the longitudinal inserting holes 17 in a positioning mode, so that the inserting parts 51 of the detection contact pieces 6 and the corresponding longitudinal inserting holes 17 can be effectively prevented from being deviated, the service life is prolonged, the longitudinal inserting holes 17 of the right end parts of the short probe rod 2, the middle probe rod 3 and the long probe rod 4 are effectively prevented from being damaged, and unstable or invalid sensing reaction caused by fluctuation of the inserting parts 51 of the detection contact pieces 5 is avoided;

example 2: please refer to fig. 1-12. A weft accumulator using the weft accumulator sensing assembly comprises a motor protective shell 20, a motor 30, a winding disc 40, a yarn storage drum 50 and a shield 60, wherein the motor 30 is arranged in the motor protective shell 20, the winding disc 40 is arranged on the right side of the motor protective shell 20, the yarn storage drum 50 is connected with the winding disc 40, the shield 60 is connected to the upper side of the motor protective shell 20 and above the yarn storage drum, the weft accumulator is characterized in that a sensor seat 1 is connected in the shield 60, a motor control panel 6 is connected to one side, close to the motor protective shell 20, in the shield 60, a control end of the motor 30 is electrically connected with a motor control panel 6, a control button is electrically connected with the motor control panel 6 and arranged outside the motor protective shell 20, a detection contact piece 5 at the right end of a short feeler lever 2, a middle feeler lever 3 and a long feeler lever 4 is extended out from a left feeler hole 110, a middle feeler hole 111 and a right feeler lever 112 and distributed on the radial upper side of the, and is curved towards the right of the storage drum 50. One end of each detection contact piece 5, which is close to the yarn storage drum 50, is arc-shaped, and the arc-shaped faces the right side of the yarn storage drum 50, namely the yarn discharging direction, so that yarn discharging is smoother;

the middle part of the motor protection shell 20 is provided with an inward arc-shaped notch 201 which is convenient to take. The weft accumulator aims at facilitating an operator or installing the weft accumulator to take conveniently, and solving the problem that the weft accumulator in the prior art is difficult to take due to structural limitation;

the left end of the motor protection shell 20 is provided with a yarn inlet 200, a hollow main shaft 301 of the motor 30 is positioned in the yarn inlet 200, and a sealing retainer ring 300 is packaged between the yarn inlet 200 and the hollow main shaft 301, so that water, oil, dust and the like on the yarn are prevented from entering the motor protection shell 20 through a gap between the yarn inlet 200 and the hollow main shaft 301 when the weft accumulator works, the motor 30 is protected from being burnt, the normal operation of the motor 30 is ensured, and after the yarn penetrates through the hollow main shaft 301, the yarn is partially acted by a rotor part of the motor 30 and wound on the yarn winding disc 40 and then is wound on the yarn storage drum 50 in a ring mode.

The circuit design of the motor control board 6 in the above embodiments is not described in detail in the present application, and a yarn storage amount photoelectric detection device of a weft accumulator has been disclosed in the prior art, and the principle of the motor control board 6 in the present application is substantially the same as that of the photoelectric detection device, and it should be noted that the motor control board 6 in the present application is provided with through holes 61 on the lower side of the motor control board 6 between the transmitters 71 and the receivers 72 of the three sets of photoelectric sensors 7, and the through holes 61 are designed to prevent the blocking sheet 8 at the left ends of the shorting bar 2, the middle probing bar 3 and the long probing bar 4 from touching the motor control board when jumping, and thus the blocking sheet can penetrate through the through holes 61.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A weft accumulator sensing assembly is characterized by comprising a sensor seat (1), a short feeler lever (2), a middle feeler lever (3), a long feeler lever (4), a detection contact piece (5) and a motor control panel (6), wherein three groups of photoelectric sensors (7) are arranged on the motor control panel (6), a mounting groove (11) is formed in the upper side of the sensor seat (1), the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) are arranged in the mounting groove (11) in parallel, the middle parts of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) are hinged with the left side of the mounting groove (11) through rotating pins (7), a left feeler hole (110), a middle feeler hole (111) and a right feeler hole (112) are respectively formed in the left side, the middle part and the right side of the bottom of the mounting groove (11), one ends of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever, and each detection contact piece (5) downwards respectively and correspondingly penetrates through the left probing hole (110), the middle probing hole (111) and the right probing hole (112), the left ends of the short probing rod (2), the middle probing rod (3) and the long probing rod (4) are respectively provided with a blocking piece (8), and each blocking piece (8) is respectively and correspondingly arranged above the space between the transmitter (71) and the receiver (72) of the three groups of photoelectric sensors (7).

2. A pick storer sensing assembly as claimed in claim 1, wherein the mounting groove (11) is covered with a cover (9) at the upper side, a buffer spring leaf (12) is arranged at the lower side of the cover (9), the buffer spring leaf (12) comprises a main body (121) and three groups of spring leaves (122) which are connected with the main body (121) and respectively correspond to the upper sides of the right ends of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4), and the main body (121) is connected with the cover (9); the upper sides of the left ends of the short probe rod (2), the middle probe rod (3) and the long probe rod (4) are respectively provided with a gravity block (15); the left ends of the short probe rod (2), the middle probe rod (3) and the long probe rod (4) are downwards provided with a connecting piece (16), and one end of the blocking piece (8) is connected to the left side or the right side of the connecting piece (16).

3. A pick storer sensing assembly as claimed in claim 2, wherein the cover (9) is provided with two screw holes (91), one of the screw holes (91) is opposite to the end of the short feeler lever (2) corresponding to the reed (122) connected to the main body (121), the other screw hole (91) is opposite to the right side of the main body (121), the middle feeler lever (3) and the long feeler lever (4) corresponding to the reed (122) are connected to the right side of the main body (121), the left side of the main body (121) is connected to the cover (9), screw shafts (92) are screwed into the screw holes (91), a return spring (93) is sleeved between one end of the lower side of the screw shaft (92) and the cover (9), the upper end of the return spring is connected to an adjusting knob (94), and the axial position of the screw shafts (92) is adjusted by rotating the adjusting knob (94) to adjust the position of each reed (122).

4. A pick storer sensor assembly according to claim 2, characterized in that an adjusting assembly (13) with adjustable longitudinal position is arranged on the left side of the mounting groove (11), and the middle parts of the feeler lever (2), the middle lever (3) and the long lever (4) are hinged with the adjusting assembly (13) through a rotating pin (14).

5. A weft accumulator sensing assembly according to claim 4, characterized in that the adjusting assembly (13) comprises a longitudinal adjusting block (131), a longitudinal adjusting screw (132), a return spring (134) and an adjusting support frame (133), the longitudinal adjusting block (131) is connected with the mounting groove (11) in a longitudinal guiding manner, the lower end of the longitudinal adjusting block (131) is provided with an accommodating groove (130), a rotating pin (14) penetrates through the two ends of the rear middle parts of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) to be connected with the longitudinal adjusting block (131), the middle parts of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) are positioned in the accommodating groove (130), the adjusting support frame (133) is arranged above the left side of the mounting groove (11), the middle part of the adjusting support frame (133) is provided with a screw hole (134), the lower end of the longitudinal adjusting screw (132) is connected with the middle part of the, the position of the rotating pin (14) is adjusted by adjusting the screwing position of the longitudinal adjusting screw rod (142) and the screw hole (134) and driving the longitudinal adjusting block (131) by the longitudinal adjusting screw rod (142), and two sides of the lower end of the longitudinal adjusting block (131) are respectively propped against the bottom of the sensor seat (1) through the reset spring (134).

6. A pick storer sensing assembly as claimed in claim 1, wherein the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) are provided at their right ends with longitudinal insertion holes (17), the upper ends of the detecting contacts (5) are provided with insertion portions (51), the insertion portions (51) are inserted into the longitudinal insertion holes (17), and the right ends of the short feeler lever (2), the middle feeler lever (3) and the long feeler lever (4) are respectively screwed into the screws (18) obliquely downwards to position and connect the insertion portions (51) in the longitudinal insertion holes (17).

7. A storage pick sensing assembly as claimed in claim 1, characterized in that the lower motor control board (6) between the transmitter (71) and the receiver (72) of each photoelectric sensor (7) is provided with a through hole (61) respectively.

8. A weft accumulator applying the weft accumulator sensing assembly as claimed in any one of claims 1 to 7, comprising a motor protective housing (20), a motor (30), a yarn winding disc (40), a yarn storage drum (50) and a shield (60), wherein the motor (30) is arranged in the motor protective housing (20), the yarn winding disc (40) is arranged on the right side of the motor protective housing (20), the yarn storage drum (50) is connected with the yarn winding disc (40), the shield (60) is connected to the upper side of the motor protective housing (20) and above the yarn storage drum, the weft accumulator is characterized in that the sensor base (1) is connected in the shield (60), the motor control panel (6) is connected to one side of the motor protective housing (20) in the shield (60), the control end of the motor (30) is electrically connected with the motor control panel (6), a control button electrically connected with the motor control panel (6) is arranged outside the motor protective housing (20), and the feeler lever (2), The detection contact pieces (5) at the right ends of the middle feeler lever (3) and the long feeler lever (4) are extended out from the left feeler hole (110), the middle feeler hole (111) and the right feeler hole (112) and distributed on the radial upper side of the yarn storage drum (50), and one ends of the detection contact pieces (5) close to the yarn storage drum (50) are all arc-shaped, and the arc faces the right side of the yarn storage drum (50).

9. A prewinder according to claim 8, characterized in that the motor protecting casing (20) is provided with an inwardly curved recess (201) in the middle for easy access.

10. A prewinder according to claim 8, characterized in that the motor protective casing (20) is provided at its left end with a yarn inlet (200), the hollow spindle (301) of the motor (30) is located in the yarn inlet (200), and a sealing collar (300) is enclosed between the yarn inlet (200) and the hollow spindle (301).