CN108315863B

CN108315863B - Weft accumulator

Info

Publication number: CN108315863B
Application number: CN201810427060.XA
Authority: CN
Inventors: 曹海东
Original assignee: Wujiang Jiading Electronic Co ltd
Current assignee: Wujiang Jiading Electronic Co ltd
Priority date: 2018-05-07
Filing date: 2018-05-07
Publication date: 2024-02-20
Anticipated expiration: 2038-05-07
Also published as: CN108315863A

Abstract

The invention discloses a weft accumulator. This store up latitude ware includes motor rotor, motor rotor fixes the code wheel in proper order, the encoder, motor stator, lead yarn subassembly and store up the creel, main shell upside is equipped with the epitheca, main shell upper end front side is equipped with infrared probe subassembly, infrared probe subassembly is located stores up the creel upside, lead yarn subassembly and include the fixing base, the fixing base includes columniform axle sleeve, axle sleeve outer wall symmetry slope is equipped with a pair of columniform fixed cover, every fixed cover axial first rocking arm and second rocking arm include hollow tubular second main arm, the spooler is connected to first rocking arm, the spooler is equipped with the guide hole, the second rocking arm has the unwrapping wire piece, the unwrapping wire piece is equipped with the third through-hole. The rotary arm type yarn winding assembly is easy to dissipate heat and has high production efficiency; the winder can be adjusted to meet different working requirements, and the effect of high signal acquisition precision is achieved.

Description

Weft accumulator

Technical Field

The invention relates to the technical field of textile, in particular to a weft accumulator.

Background

With the continuous development of the textile industry, the weft accumulator has become a main component of textile machinery, and the working principle of the weft accumulator is as follows: the motor drives the yarn winding disc to rotate, the yarn winding disc is provided with a yarn storage drum, the yarn storage drum is driven to rotate by the rotating yarn winding disc, and at the moment, relative motion is generated between the yarn storage drum and the weft yarns, so that the ordered weft yarns are wound on the yarn storage drum. The existing weft accumulator has the following problems: firstly, a yarn inlet is generally arranged on an outer circle of a yarn winding disc, yarns enter the yarn inlet, and part of yarns always lean against the yarn winding disc, so that the yarns are easy to wear, and the quality of the yarns is reduced; secondly, the winding disc is of a fixed structure, different working requirements cannot be met through adjustment, flexibility is poor, use effect is poor, and maximum work efficiency of the weft accumulator cannot be exerted; thirdly, the weft accumulator works, the motor rotates and yarn passes through the yarn winding disc at a high speed, heat can be continuously generated, the yarn winding disc is of an integral structure at present, heat dissipation is poor, weft tension peaks are overlarge, weft breakage easily occurs, production efficiency is further affected, and fourth, the encoder is located on the inner side of the shell and inconvenient to adjust.

Disclosure of Invention

To address one or more of the above problems, the present invention provides a weft accumulator.

The weft accumulator comprises a motor rotor, the motor rotor is sequentially fixed with a code disc, an encoder, a motor stator, a yarn guide assembly and a yarn storage rack, a main shell is arranged on the outer sides of the fixed code disc, the encoder, the motor stator and the yarn guide assembly, an upper shell is arranged on the upper side of the main shell, a cavity is formed between the main shell and the upper shell, an electric appliance control element is arranged in the cavity, a switch is arranged on the outer side of the upper shell, an infrared probe assembly is arranged on the front side of the upper end of the main shell, the infrared probe assembly is positioned on the upper side of the yarn storage rack, the motor stator, the motor rotor, the switch and the infrared probe assembly are electrically connected with the electric appliance control element,

the yarn guide assembly comprises a fixed seat, the fixed seat comprises a cylindrical shaft sleeve, a pair of cylindrical fixed sleeves are symmetrically and obliquely arranged on the outer wall of the shaft sleeve, a first through hole is axially arranged on each fixed sleeve, the first rotating arm comprises a first hollow tubular main arm, the second rotating arm comprises a second hollow tubular main arm, the first through holes can be respectively inserted into and fix one ends of the first main arm and the second main arm, the shaft sleeve is connected with the second main arm, a second through hole is formed on the outer wall of the shaft sleeve,

the other end of the first main arm is horizontally connected with an extension arm, the center of the end head of the extension arm is horizontally connected with a vertical plate, the center of the vertical plate is vertically connected with a screw rod, the other end of the screw rod is in threaded connection with a body of the winder, the outer wall of the body is outwards and vertically extended to form a horizontally arranged lug plate, a guide hole is formed in the center of the lug plate, a nut is further screwed in the middle of the screw rod, the nut is positioned between the body and the vertical plate,

the other end of the second main arm is vertically fixed with a base plate, the surface of the base plate is fixed with a cover plate, the middle part of the cover plate is fixed with a paying-off block, the paying-off block and the winder are made of hard wear-resistant and high-temperature-resistant materials, the paying-off block is provided with a third through hole which is communicated with the inner cavity of the second main arm, the paying-off block and the winder are symmetrically distributed outside a yarn storage roller of the yarn storage rack,

the middle of the motor rotor is provided with a central through hole, and yarns are guided to be retracted and released through the central through hole, the second through hole, the inner hole of the second main arm, the third through hole and the yarn storage roller and bypass the guide hole. The weft accumulator adopts the yarn guiding component with the first rotating arm and the second rotating arm fixed on the fixing seat, and has the beneficial effects that: firstly, the structure is simple, a large cavity exists in the middle, heat dissipation is easy, the phenomenon that the weft yarn is easy to break due to overlarge tension peak value of the weft yarn is solved, production interruption is avoided, and production efficiency is high; secondly, the center of the vertical plate is vertically connected with the screw rod, the other end of the screw rod is in threaded connection with the winder, and the nut is positioned between the winder and the vertical plate; thirdly, each fixing sleeve can be freely inserted into and fix one end of the first main arm and one end of the second main arm, the structure realizes radial adjustability of the first main arm and the second main arm, different working requirements can be met, and the flexibility is good; fourth, the yarn is led through second through-hole, the hole of second main arm, the third through-hole and walks around the guide hole and is received and released, and third through-hole and guide hole are not in the coplanar, therefore, the third through-hole is the yarn inlet, and the yarn is not supported on the second main arm, only partial contact unwrapping wire piece, has reduced the wearing and tearing of yarn, has improved the quality of yarn, and fifthly, the encoder is rear-mounted, convenient maintenance adjustment can obtain higher signal.

Further, the main shell comprises a rear shell, a middle shell and a front shell, wherein the rear shell is sleeved on the outer sides of the coded disc and the encoder, the middle shell is sleeved on the outer sides of the motor stator, the first rotating arm and the second rotating arm, and the front shell seals the front sides of the first rotating arm and the second rotating arm.

Furthermore, the rear end of the yarn storage rack is a conical positioning end, the inclination of the positioning end is the same as that of the first rotating arm and the second rotating arm, and the front end of the paying-off block and the winder extends out of the positioning end to the two symmetrical ends outside the yarn storage roller.

Further, a through shaft hole is formed in the center of the shaft sleeve, and the shaft hole is fixed to the motor rotor.

Further, the first main arm and the second main arm are cylindrical, and the diameters of the first main arm and the second main arm are in transition fit with the diameter of the first through hole. The beneficial effects are as follows: the first main arm and the second main arm are convenient to install and adjust, and the first main arm and the second main arm are prevented from rotating relative to the first through hole.

Further, a plurality of first threaded holes are arranged on the circumference of the fixed sleeve in a displaying way,

the first main arm is provided with a first blind hole, a plurality of set screws are screwed into the first threaded hole and enter the first blind hole to fix the first main arm on one side of the fixed sleeve,

the second main arm is provided with a second blind hole, and a plurality of set screws are screwed into the first threaded hole and enter the second blind hole to fix the second main arm on the other side of the fixed sleeve. The beneficial effects are as follows: the first main arm and the second main arm are fixed through the arrangement, and the adjustable arm has certain adjustability and is convenient to install and adjust.

Further, the middle plate is further arranged between the first main arm and the extension arm, and the first main arm and the extension arm are welded on two sides of the middle plate respectively. The beneficial effects are as follows: the connecting mode is convenient to process, the size and the precision are easy to ensure, and the structural mechanical property is good.

Further, the end of the extension arm is provided with an internal thread hole, and the end of the vertical plate is provided with external threads matched with the internal thread hole. The beneficial effects are as follows: the device is convenient to install, firm in connection, simple in structure, compact in overall structure and small in size.

Further, the inner end of the external thread is also formed with a circular locating plate. The beneficial effects are as follows: the circular locating plate is arranged, so that the installation precision and the dimensional precision of the whole structure are conveniently controlled, and the running stability and reliability are ensured.

Further, the two ends of the base plate are provided with fourth threaded holes, the cover plate is provided with stepped through holes matched with the fourth threaded holes, and the threaded connecting piece fixes the cover plate on the base plate through the stepped through holes. The beneficial effects are as follows: the stepped through holes enable the threaded connecting piece not to exceed the upper surface of the cover plate, the threaded connecting piece is prevented from being exposed outside, yarn winding is disturbed, and the whole structure is more reasonable.

Further, the middle part of the paying-off block protrudes outwards to form a fixed column, the third through hole penetrates through the fixed column, the fixed column is fixed on the cover plate, and the tail end of the fixed column penetrates through the base plate to enter the inner cavity of the second main arm. The beneficial effects are as follows: the fixed column enters the cavity of the second main arm, and the paying-off block enables yarns to directly enter the third through hole from the inner cavity, so that abrasion of the yarns, the base plate and the cover plate is avoided, and the quality of the yarns is further improved.

Further, the middle part of the cover plate protrudes outwards to form a boss, the fixing column is fixed on the boss, and the boss is matched with the pay-off block in shape.

Further, a groove is formed in the middle of the base plate in a concave manner. The beneficial effects are as follows: the grooves are formed, so that the running condition of the yarn can be observed.

Furthermore, the winder and the paying-off block are made of hard wear-resistant and high-temperature-resistant ceramic, the cover plate is made of compressed plastic, the fixing seat is made of aluminum alloy material through integral casting, and the second rotating arm and the first rotating arm are made of medical stainless steel. The beneficial effects are as follows: the surface of the ceramic material is smooth and burr-free, the yarn only contacts with the ceramic material, the abrasion is less, and secondly, the ceramic is high-temperature resistant and fast in heat dissipation, so that local heat accumulation is prevented, high temperature is formed, and the yarn is burnt; the positioning performance of the compression material is higher, and the overall mechanical performance of the fixing seat made of cast aluminum is better.

Drawings

FIG. 1 is a schematic front view of a weft accumulator according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the accumulator of FIG. 1;

FIG. 3 is a three-dimensional schematic view of the accumulator shown in FIG. 2;

FIG. 4 is a partial schematic view (one) of the weft accumulator shown in FIG. 3;

FIG. 5 is a partial schematic view of the accumulator of FIG. 3 (II);

FIG. 6 is a schematic front view of the accumulator of FIG. 3;

FIG. 7 is a schematic cross-sectional view of A-A of the accumulator of FIG. 6;

the motor rotor 01, the central through hole 011, the motor stator 02, the code wheel 03, the encoder 04, the yarn guide assembly 05, the fixing base 1, the shaft sleeve 10, the shaft hole 101, the second through hole 102, the key slot 103, the fixing sleeve 11, the first through hole 111, the first threaded hole 112, the first rotating arm 2, the first main arm 20, the first blind hole 201, the extension arm 21, the inner threaded hole 211, the vertical plate 22, the outer thread 221, the positioning plate 222, the second threaded hole 223, the middle plate 23, the second rotating arm 3, the second main arm 30, the second blind hole 301, the base plate 31, the fourth threaded hole 311, the fourth through hole 312, the groove 313, the screw 4, the winder 5, the body 50, the third threaded hole 501, the lug plate 51, the guide hole 511, the cover plate 6, the stepped through hole 61, the fifth threaded hole 62, the boss 63, the paying-off block 7, the fixing post 71, the third through hole 711, the nut 8, the set screw 9, the yarn storage frame 06, the positioning end 061, the yarn storage roller 062, the infrared probe assembly 07, the main housing 08, the rear housing 081, the middle housing 082, the mounting housing 082, the front housing 083, the front housing 09, and the switch 09.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Fig. 1 to 7 schematically show a weft accumulator according to an embodiment of the invention. As shown in the figure, the device comprises a motor rotor 01, the motor rotor 01 sequentially fixes a code disc 03, an encoder 04, a motor stator 02, a yarn guide assembly 05 and a yarn storage frame 06, a main shell 08 is arranged on the outer sides of the fixed code disc 03, the encoder 04, the motor stator 02 and the yarn guide assembly 05, an upper shell 09 is arranged on the upper side of the main shell 08, a cavity is formed between the main shell 08 and the upper shell 09, an electric appliance control element is arranged in the cavity, a switch 091 is arranged on the outer side of the upper shell 09, an infrared probe assembly 07 is arranged on the front side of the upper end of the main shell 08, the infrared probe assembly 07 is arranged on the upper side of the yarn storage frame 06, the motor stator 02, the motor rotor 01, the switch 091 and the infrared probe assembly 07 are electrically connected with the motor control element,

the yarn guide assembly 05 comprises a fixed seat 1, the fixed seat 1 comprises a cylindrical shaft sleeve 10, a pair of cylindrical fixed sleeves 11 are symmetrically and obliquely arranged on the outer wall of the shaft sleeve 10, a first through hole 111 is axially arranged on each fixed sleeve 11, the first rotating arm 2 comprises a first hollow tubular main arm 20, the second rotating arm 3 comprises a second hollow tubular main arm 30, the first through holes 111 can be respectively and freely inserted into and fix one ends of the first main arm 20 and the second main arm 30, the shaft sleeve 10 and the second main arm 30 are connected, a second through hole 102 is formed on the outer wall of the shaft sleeve 10,

the other end of the first main arm 20 is horizontally connected with the extension arm 21, the center of the end of the extension arm 21 is horizontally connected with the vertical plate 22, the center of the vertical plate 22 is vertically connected with the screw 4, the other end of the screw 4 is in threaded connection with the body 50 of the winder 5, the outer wall of the body 50 extends outwards and vertically to form a horizontally arranged lug plate 51, the center of the lug plate 51 is provided with a guide hole 511, the middle of the screw 4 is also in threaded connection with a nut 8, the nut 8 is positioned between the body 50 and the vertical plate 22,

the other end of the second main arm 30 is vertically fixed with a base plate 31, the surface of the base plate 31 is fixed with a cover plate 6, the middle part of the cover plate 6 is fixed with a paying-off block 7, the paying-off block 7 is provided with a third through hole 711, the paying-off block 7 and the winder 5 are symmetrically distributed outside a yarn storage roller 062 of the yarn storage frame 06,

the middle of the motor rotor 01 is provided with a central through hole 011, and yarns are guided to be wound and unwound by the central through hole 011, the second through hole 102, the inner hole of the second main arm 30, the third through hole 711 and the yarn storage roller 062 and bypassing the guide hole 511. This weft accumulator adopts novel sand guide subassembly, and its beneficial effect is: firstly, the yarn guide assembly adopts a structure that the first rotating arm 2 and the second rotating arm 3 are fixed on the fixed seat 1, the structure is simple, a large cavity exists in the middle, heat dissipation is easy, the phenomenon that the weft yarn is easy to break due to overlarge tension peak value of the weft yarn is solved, production interruption is avoided, and the production efficiency is high; secondly, the center of the vertical plate 22 is vertically connected with the screw rod 4, the other end of the screw rod 4 is in threaded connection with the winder 5, the nut 8 is positioned between the winder 5 and the vertical plate 22, and the arrangement realizes that the winder 5 can axially adjust on the vertical plate 22, can meet different working requirements, has good flexibility and can exert the maximum working efficiency of the weft accumulator; thirdly, each fixing sleeve 11 can be freely inserted into and fix one end of the first main arm 20 and one end of the second main arm 30, the structure realizes radial adjustability of the first main arm 20 and the second main arm 30, different working requirements can be met, and the flexibility is good; fourth, the yarn is guided and is received through second through-hole 102, the hole of second main arm 30, third through-hole 711 and bypass guide hole 511, third through-hole 711 and guide hole 511 are not in the coplanar, consequently, third through-hole 711 is the yarn inlet, the yarn is not supported on second main arm 20, only partial contact unwrapping wire piece 7 has reduced the wearing and tearing of yarn, the quality of yarn has been improved, fifth, encoder 04 and code wheel 03 rear-mounted, the acquisition signal degree of accuracy is high, interference killing feature is high, easy to assemble and adjustment.

Preferably, the main casing 08 includes a rear casing 081, a middle casing 082 and a front casing 083, the rear casing 081 is sleeved outside the code wheel 03 and the encoder 04, the middle casing 082 is sleeved outside the motor stator 02, the first rotating arm 2 and the second rotating arm 3, a mounting seat 0821 is arranged on the lower side of the middle casing 082, and the front casing 083 seals the front sides of the first rotating arm 2 and the second rotating arm 3.

Preferably, the rear end of the yarn storage rack 06 is a conical positioning end 061, the inclination of the positioning end 061 is the same as that of the first rotating arm 2 and the second rotating arm 3, and the front end of the paying-off block 7 and the winder 5 extends out of the positioning end 061 to the two symmetrical ends outside the yarn storage roller 062.

Preferably, the shaft sleeve 10 is formed at the center thereof with a shaft hole 101 therethrough, the shaft hole 101 being fixed to the motor rotor 01,

preferably, the inner hole wall of the shaft sleeve 10 is formed with a key slot 103, and the motor rotor and the shaft sleeve 10 are connected through a transmission key of the key slot 103. The key groove 103 is adopted for connection, so that the structure is simple, and torque and load can be efficiently transmitted.

Preferably, the fixing sleeve 11 is provided with a plurality of first threaded holes 112 in circumferential array,

the first main arm 20 is provided with a first blind hole 201, a plurality of set screws 9 are screwed into the first threaded holes 112 and enter the fixed sleeve 11 of the first blind hole 201 to fix the first main arm 20 at one side,

the second main arm 30 is provided with a second blind hole 301, and a plurality of set screws 9 are screwed into the first threaded holes 112 and enter the second blind hole 301 to fix the second main arm 30 on the other side of the fixing sleeve 11. The first main arm 20 and the second main arm 30 are fixed by the arrangement, and the adjustable device has certain adjustability and is convenient to install and adjust.

Preferably, the first main arm 20 and the second main arm 30 are cylindrical, and the diameters of the first main arm 20 and the second main arm 30 are in transition fit with the diameter of the first through hole 111. This arrangement facilitates the mounting adjustment of the first main arm 20 and the second main arm 30, and prevents the first main arm 20 and the second main arm 30 from rotating relative to the first through hole 111.

Preferably, an intermediate plate 23 is further disposed between the first main arm 20 and the extension arm 21, and the first main arm 20 and the extension arm 21 are welded to both sides of the intermediate plate 23, respectively. The connecting mode is convenient to process, the size and the precision are easy to ensure, and the structural mechanical property is good.

Preferably, the end of the extension arm 21 is provided with an internal threaded hole 211, and the end of the riser 22 is provided with external threads 221 which mate with the internal threaded hole 211. The device is convenient to install, firm in connection, simple in structure, compact in overall structure and small in size.

Preferably, the inner end of the external thread 221 is further formed with a circular positioning plate 222, and the vertical plate 22 is provided with a second threaded hole 223, and the second threaded hole 223 is vertically connected with one end of the screw 4. The circular locating plate 222 is arranged, so that the installation accuracy and the dimensional accuracy of the whole structure are conveniently controlled, and the running stability and reliability are ensured.

Preferably, the body 50 is cylindrical, a third threaded hole 501 is formed in the center of the body 50, and the other end of the screw 4 is fixed to the third threaded hole 501.

Preferably, the base plate 31 is formed with fourth screw holes 311 at both ends, the cover plate 6 is provided with stepped through holes 61 matching the fourth screw holes 311, and the screw connector fixes the cover plate 6 to the base plate 31 through the stepped through holes 61. The stepped through holes 61 prevent the threaded connection from exceeding the upper surface of the cover plate 6, prevent the threaded connection from being exposed outside and interfering with yarn winding, and the overall structure is more reasonable.

Preferably, the middle part of the paying-off block 7 protrudes outwards to form a fixed column 71, a third through hole 711 penetrates through the fixed column 71, a fifth threaded hole 62 is formed in the middle part of the cover plate 6, the base plate 31 is provided with a fourth threaded hole 312, and the fixed column 71 is in threaded connection with the fifth threaded hole 62, penetrates through the fourth threaded hole 312 and enters the inner cavity of the second main arm 30 at the tail end. The fixed column 71 enters the cavity of the second main arm 30, and the paying-off block 7 realizes that the yarn directly enters the third through hole 711 from the cavity, so that the abrasion of the yarn, the base plate 31 and the cover plate 6 is avoided, and the quality of the yarn is further improved.

Preferably, a boss 63 is formed at the middle of the cover plate 6 in an outward protruding manner, the fifth threaded hole 62 penetrates through the whole boss 63, and the boss 63 and the paying-off block 7 are in shape fitting.

Preferably, the base plate 31 is concavely formed with a groove 313 in the middle thereof. The grooves 313 are provided to enable the running of the yarn to be observed.

Preferably, the winder 5 and the paying-off block 7 are made of hard wear-resistant and high-temperature-resistant ceramic, the cover plate 6 is made of compressed plastic, the fixing seat 1 is made of aluminum alloy material through integral casting, and the second rotating arm 3 and the first rotating arm 2 are made of medical stainless steel. The surface of the ceramic material is smooth and burr-free, the yarn only contacts with the ceramic material, the abrasion is less, and secondly, the ceramic is high-temperature resistant and fast in heat dissipation, so that local heat accumulation is prevented, high temperature is formed, and the yarn is burnt; the positioning performance of the compression material is higher, and the overall mechanical performance of the fixing seat made of cast aluminum is better.

Preferably, the guide hole 511 is entirely rounded. Further reducing the abrasion between the yarn and the guide hole 511 and improving the quality of the yarn.

Preferably, circular arc-shaped reinforcing rings are respectively arranged at two sides between the first main arm 20 and the second main arm 30. The reinforcing ring is arranged, so that the integral rigidity can be improved, and yarn breakage caused by sudden vibration in yarn winding movement is prevented.

Preferably, the reinforcement ring is secured between the ends of the first main arm 20 and the ends of the second main arm 30.

What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.

Claims

1. The weft accumulator is characterized by comprising a motor rotor (01), wherein the motor rotor (01) is sequentially fixed with a code disc (03), an encoder (04), a motor stator (02), a yarn guide assembly (05) and a yarn storage rack (06), a main shell (08) is arranged outside the fixed code disc (03), the encoder (04), the motor stator (02) and the yarn guide assembly (05), an upper shell (09) is arranged on the upper side of the main shell (08), a cavity is formed between the main shell (08) and the upper shell (09), an electric appliance control element is arranged in the cavity, a switch (091) is arranged on the outer side of the upper shell (09), an infrared probe assembly (07) is arranged on the front side of the upper end of the main shell (08), the infrared probe assembly (07) is arranged on the upper side of the yarn storage rack (06), the motor stator (02), the motor rotor (01), the switch (091) and the infrared probe assembly (07) are electrically connected with the electric appliance control element,

the yarn guide assembly (05) comprises a fixed seat (1), the fixed seat (1) comprises a cylindrical shaft sleeve (10), a pair of cylindrical fixed sleeves (11) are symmetrically and obliquely arranged on the outer wall of the shaft sleeve (10), each fixed sleeve (11) is axially provided with a first through hole (111), a first rotating arm (2) and a second rotating arm (3) respectively comprise a first main arm (20) and a second main arm (30) which are hollow tubular, the first through holes (111) can be freely inserted into one ends of the first main arm (20) and the second main arm (30), a second through hole (102) is formed on the outer wall of the shaft sleeve (10),

the other end of the first main arm (20) is horizontally connected with an extension arm (21), the center of the end head of the extension arm (21) is horizontally connected with a vertical plate (22), the center of the vertical plate (22) is vertically connected with a screw rod (4), the other end of the screw rod (4) is in threaded connection with a body (50) of a winder (5), the outer wall of the body (50) extends outwards and vertically to form a horizontal lug plate (51), a guide hole (511) is formed in the center of the lug plate (51), a nut (8) is further screwed in the middle of the screw rod (4), the nut (8) is positioned between the body (50) and the vertical plate (22),

the other end of the second main arm (30) is vertically fixed with a base plate (31), the surface of the base plate (31) is fixed with a cover plate (6), the middle part of the cover plate (6) is fixed with a paying-off block (7), the paying-off block (7) is provided with a third through hole (711) communicated with the inner cavity of the second main arm (30), the paying-off block (7) and the winder (5) are symmetrically distributed outside a yarn storage roller (062) of the yarn storage rack (06),

a central through hole (011) is formed in the middle of the motor rotor (01), and yarns pass through the central through hole (011), the second through hole (102), an inner hole of the second main arm (30), the third through hole (711) and the yarn storage roller (062) and bypass the guide hole (511) to be guided and retracted;

the first main arm (20) and the second main arm (30) are cylindrical, and the diameters of the first main arm (20) and the second main arm (30) are in transition fit with the diameter of the first through hole (111);

the fixed sleeve (11) is circumferentially provided with a plurality of first threaded holes (112), the first main arm (20) is provided with a first blind hole (201),

a plurality of set screws (9) are screwed into the first threaded holes (112) and enter the first blind holes (201) to fix the first main arm (20) on the fixing sleeve (11) on one side, the second main arm (30) is provided with a second blind hole (301),

the plurality of set screws (9) are screwed into the first threaded holes (112) and enter the second blind holes (301) to fix the second main arm (30) on the other side of the fixing sleeve (11);

an intermediate plate (23) is further arranged between the first main arm (20) and the extension arm (21), and the first main arm (20) and the extension arm (21) are welded on two sides of the intermediate plate (23) respectively;

the end of the extension arm (21) is provided with an internal thread hole (211), the end of the vertical plate (22) is provided with an external thread (221) matched with the internal thread hole (211), and the inner tail end of the external thread (221) is also provided with a circular positioning plate (222).

2. A pick holder according to claim 1, characterized in that the main housing (08) comprises a rear housing (081), a middle housing (082) and a front housing (083), the rear housing (081) being sleeved outside the encoder wheel (03) and the encoder (04), the middle housing (082) being sleeved outside the motor stator (02), the first swivel arm (2) and the second swivel arm (3), the front housing (083) sealing the front sides of the first swivel arm (2) and the second swivel arm (3).

3. Weft accumulator according to claim 1, characterized in that the rear end of the yarn storage rack (06) is a conical positioning end (061), the inclination of the positioning end (061) is the same as that of the first rotating arm (2) and the second rotating arm (3), and the paying-off block (7) and the winder (5) extend forwards from the positioning end (061) to two symmetrical ends outside the yarn storage roller (062).

4. A pick holder according to claim 1, wherein fourth threaded holes (311) are formed in both ends of the base plate (31), the cover plate (6) being provided with stepped through holes (61) for cooperation with the fourth threaded holes (311), and a threaded connection secures the cover plate (6) to the base plate (31) through the stepped through holes (61).

5. A weft accumulator according to claim 1, characterized in that the middle part of the paying-off block (7) protrudes outwards to form a fixed column (71), the third through hole (711) penetrates through the fixed column (71), the fixed column (71) is fixed on the cover plate (6) and the tail end penetrates through the base plate (31) to enter the inner cavity of the second main arm (30),

the middle part of apron (6) outwards protrudes and is formed with boss (63), fixed column (71) are fixed in boss (63), boss (63) with unwrapping wire piece (7) shape fit, indent is formed with recess (313) in the middle of base plate (31).

6. A pick holder according to claim 1, characterized in that the hub (10) is centrally formed with a through-going shaft hole (101), which shaft hole (101) is fixed to the motor rotor (01).

7. A pick holder according to claim 1, wherein the winder (5) and the payout block (7) are ceramic made of hard wear-resistant and high temperature-resistant material, the cover plate (6) is of compressed plastic, the fixing base (1) is made of aluminum alloy material by integral casting, and the second rotating arm (3) and the first rotating arm (2) are made of medical stainless steel material.