CN211665344U - Machine head for embroidery machine - Google Patents

Abstract

The utility model discloses a head for embroidery machine, including aircraft nose main shaft, a plurality of bearing frame, balancing piece, cantilever body, the needle bar frame, take-up lever drive assembly, needle bar drive assembly and the presser foot drive assembly that are equipped with needle bar subassembly, presser foot subassembly and take-up lever subassembly, the aircraft nose main shaft passes through the bearing frame and establishes on the cantilever body, be equipped with the balancing piece on the aircraft nose main shaft, the front end of cantilever body is equipped with the needle bar frame through the slide, the front end of cantilever body is equipped with the look actuating mechanism that trades of drive needle bar frame, aircraft nose main shaft drive take-up lever drive assembly, needle bar drive assembly and presser foot drive assembly compare with prior art, can reduce vibrations and noise, and convenient to use improves stability and work efficiency.

Description

Machine head for embroidery machine

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of embroidery machine, especially a technical field of aircraft nose for embroidery machine.

[ background of the invention ]

The embroidery machine is also called as a computer embroidery machine, is the most advanced embroidery machine of the present generation, can realize the high speed and high efficiency of the traditional manual embroidery, can also realize the requirements of multi-level, multi-function, uniformity and perfection which can not be met by the manual embroidery, is an electromechanical product which embodies various high and new technologies, and along with the replacement of the manual embroidery by the computer embroidery, the computer embroidery machine also becomes the main machine type of the embroidery industry.

At present, the computerized embroidery machine is not dedicated for a factory, a plurality of household small computerized embroidery machines are arranged on the market at present, the requirement of family embroidery of people is met, but the conventional small computerized embroidery machine has the defects of large vibration and large noise when in use, influences the family embroidery mood of people, and has the defects of inconvenient use, poor stability and improvement on working efficiency.

[ Utility model ] content

The utility model aims at solving the problem in the prior art, providing a head for embroidery machine, can reduce vibrations and noise, convenient to use improves stability and work efficiency.

In order to achieve the purpose, the utility model provides a head for an embroidery machine, which comprises a head main shaft, a plurality of bearing seats, a balance block, a cantilever body, a needle bar frame provided with a needle bar component, a presser foot component and a take-up lever component, a take-up lever transmission component, a needle bar transmission component and a presser foot transmission component, the machine head main shaft is arranged on the cantilever body through a bearing seat, a balance block is arranged on the machine head main shaft, the front end of the cantilever body is provided with a needle bar frame through a slideway, the front end of the cantilever body is provided with a color changing driving mechanism for driving the needle bar frame, the machine head main shaft drives the take-up lever transmission component, the needle rod transmission component and the presser foot transmission component, the needle rod frame is provided with a middle thread passing device and an isolation mechanism, the isolation mechanism comprises an upper mounting plate positioned above the middle wire passing device and a lower mounting plate positioned below the middle wire passing device, the upper mounting plate is provided with an inserting piece which is detachably and fixedly connected and separates a wire passing area above and below the middle wire passing device from the outside.

Preferably, trade look actuating mechanism including trade the look motor, trade the look cam, a plurality of trade look rollers and rotation sensor, trade and be equipped with the trade look cam in the axis of rotation of look motor, be equipped with interval align to grid on the needle bar frame and trade the look roller with trade the screw thread form cam slot matched with of look cam, rotation sensor and the rotation axis connection who trades the look motor.

Preferably, the rear end of the machine head main shaft is provided with two bearing seats, a synchronous belt pulley, an optical coupling induction sheet and an angle indication ring which are arranged between the two bearing seats in sequence from front to back, the machine head main shaft further comprises an angle pointer matched with the angle indication ring and an optical coupling sensor matched with the optical coupling induction sheet, and the front end of the machine head main shaft is sequentially provided with a main driving cam, a bearing seat, a balance block and a presser foot cam from front to back.

Preferably, the presser foot transmission assembly comprises a presser foot assembly driving seat, a connecting rod I, a rotating shaft I, a connecting rod II and a connecting rod III, the rear end of the rotating shaft I is connected with a roller in a cam groove of the presser foot cam through the connecting rod I, the front end of the rotating shaft I is connected with one end of the connecting rod III through the connecting rod II, the other end of the connecting rod III is connected with the presser foot assembly driving seat, the presser foot assembly driving seat is sleeved on two guide rods fixedly arranged in the front end of the cantilever body, the needle rod transmission assembly comprises a connecting rod IV and a needle rod assembly driving seat, one end of the connecting rod IV is eccentrically connected with the front end of the main driving cam, the other end of the connecting rod IV is connected with the needle rod assembly driving seat which is slidably arranged on the two guide rods, the take-up rod transmission assembly comprises a connecting rod V, a rotating shaft II, a swing arm and a roller, one end of the rotating shaft, the other end of the rotating shaft II is provided with a swing arm, and a roller matched with a connecting groove of the take-up lever assembly is arranged on the swing arm.

Preferably, the presser foot assembly driving seat comprises a transmission slide block, two sliding sleeves, an input transmission rod and an output transmission body, the transmission slide block is provided with two guide holes, slide sleeves are arranged in the guide holes, guide rods are arranged in the slide sleeves in a penetrating way, an input transmission rod fixedly connected with the transmission slide block through a fixing screw is inserted into the front end of the transmission slide block, the rear end of the transmission slide block is provided with an output transmission body, the front end of the input transmission rod is provided with a blind hole, the blind hole is internally provided with an oil guide wool felt, the circumferential surface of the input transmission rod is provided with a plurality of oil outlets communicated with the blind hole, the output transmission body is provided with a buffer block, the central axes of the working ends of the input transmission rod and the buffer block are both positioned between the central axes of the two guide rods, and the input transmission rod is provided with a groove for fixing the screw to tightly push the input transmission rod.

As preferred, the inserted sheet is including keeping off the body and the grafting cell body, be equipped with on the mounting panel down with the grafting cell body one-to-one and insert the internal baffle of grafting cell, the upper end of keeping off the body is equipped with elastic buckle, the front end lower part of keeping off the body is equipped with the location hook, the front end upper portion of keeping off the body is equipped with the location body, the right side of keeping off the body is equipped with the line groove, is equipped with respectively with elastic buckle, the location body and location hook matched with slotted hole I, slotted hole II and slotted hole III on going up the mounting panel, be equipped with on going up the mounting panel with take-up lever one-to-one and matched with notch, the both ends of.

Preferably, the middle wire passing device comprises a support body, a wire passing blocking piece and a tension adjusting device, the wire passing blocking piece and the tension adjusting device are arranged on the support body, the tension adjusting device is positioned below the wire passing blocking piece, the wire passing blocking piece comprises wire passing blocking pieces which are sequentially arranged from front to back, the tension adjusting device comprises wire passing torsion springs and wire passing rods which are in one-to-one correspondence with the wire passing blocking pieces, wire passing hooks are formed at free ends of the wire passing torsion springs, and the wire passing rods are positioned below the wire passing hooks.

Preferably, the tension adjusting device further comprises a connecting shaft, a plurality of torsion spring sleeves, an installation sleeve and an adjusting mechanism, the connecting shaft is rotatably arranged on connecting lugs at two ends of the support body, the installation sleeve and the torsion spring sleeve positioned behind the installation sleeve are fixedly sleeved on the connecting shaft between the two connecting lugs, a wire passing torsion spring is arranged in each torsion spring sleeve, one end of the wire passing torsion spring is fixedly connected with the torsion spring sleeve, the other free end of the wire passing torsion spring extends out of a groove hole in the torsion spring sleeve, the adjusting mechanism fixedly connected with the connecting lug at the rear end is arranged at the rear end of the connecting shaft, the wire passing separation blocking piece further comprises connecting seats integrally formed with all the wire passing separation blocks, and the free end of the wire passing separation block is provided with an inserting part inserted into the inserting groove body.

As preferred, adjustment mechanism includes fixed tooth cover, moves tooth cover, spring, adjustment handle and stop collar, the rear end of connecting axle is by back to preceding cover in proper order be equipped with adjustment handle, stop collar, spring and move the tooth cover, the front end that moves the tooth cover is equipped with the cover body that is located between the engaging lug of connecting axle and rear, the cover body goes up the cover and is equipped with the fixed tooth cover with the engaging lug fixed connection at rear, it is equipped with the clearance to move between the rear end of tooth cover and the stop collar, the rear end of fixed tooth cover is connected with the front end meshing that moves the tooth cover, it is equipped with the wire rod on tooth cover and the installation cover to move the tooth cover, but wire rod and moving tooth cover sliding connection, the position of twisting of adjustment handle is outside the side cover, adjustment handle and stop collar and connecting axle fixed connection, the rear end of adjustment handle is equipped with the fixed orifices closing cap.

Preferably, the wire guide mechanism is arranged on the lower mounting plate and located below the partition plate, and comprises a wire guide rod, a seat body and a fixed elastic buckle, wherein the rear end of the wire guide rod is rotatably connected with the mounting seat body, the front end of the wire guide rod can be separated from the fixed elastic buckle for fixed connection, a avoiding groove for avoiding the wire guide rod is arranged on the side cover, the fixed elastic buckle comprises a base, a groove and two elastic clamping bodies, the base is provided with the groove matched with the front end of the wire guide rod, the base is provided with the elastic clamping bodies for clamping the front end of the wire guide rod on two sides of the groove, each elastic clamping body comprises a body, one end of the body, close to the groove, is provided with an inclined clamping part, and the free end of the clamping part is outwards bent to form an inclined leading-in part.

The utility model has the advantages that: the utility model discloses a be equipped with two guiding holes on the transmission slider, all be equipped with the sliding sleeve in the guiding hole, all be equipped with the guide bar in the sliding sleeve, adopt two guiding holes, can improve life, operating stability and reliability; the input transmission rod fixedly connected with the transmission slide block through the fixing screw is inserted into the front end of the transmission slide block, so that the transmission slide block and the input transmission rod are simpler to process, and the processing precision and the assembly precision of each part are higher; the central axes of the input transmission rod and the working end of the buffer block are positioned between the central axes of the two guide rods, so that the pressure foot transmission assembly is reasonably stressed, the overturning moment is small, the operation stability is improved, and the noise is reduced;

the upper mounting plate is provided with the inserting pieces which are detachably and fixedly connected and separate the threading areas above and below the middle threading device from the outside, and each path of embroidery thread is separated from the outside through the inserting pieces, so that the influence of external factors on the embroidery thread is prevented, and the safety and the threading stability are improved; the inserting pieces are detachably and fixedly connected with the upper mounting plate and can be detached singly without influencing other embroidery threads, and the independent inserting piece design is matched with the open design of the thread passing device, so that more convenient and faster manual thread passing can be realized (note: the inserting pieces do not need to be detached during thread passing, and the embroidery threads can slide between the partition plate and the inserting groove body); inserting the inserting part and the partition plate into the inserting groove body to ensure that the relaxation and swing of the embroidery thread cannot swing out of a specified area in the embroidering process; the free end of the wire torsion spring is provided with the wire passing hook, and the wire passing barrier piece, the wire guide device and the wire passing rod are matched, so that the traditional wire passing hole is eliminated, the threading is simple, and the working efficiency is improved;

the machine head main shaft is arranged on the cantilever body through the plurality of bearing seats, the balance block is arranged on the machine head main shaft, the bearing seats are arranged at multiple points for supporting according to the load of the machine head main shaft and the eccentric distribution of the rotation inertia, the supporting rigidity and the rotation stability of the machine head main shaft are increased, the balance block is additionally arranged at a proper position, the eccentric influence of the rotation inertia caused by the balance load and a mass eccentric part is achieved, the dynamic balance effect is achieved, the machine can still work stably when running at a high speed, basically no vibration occurs, the angle indicating ring is matched with the angle pointer, and the installation, the maintenance and the debugging are convenient.

Compared with the prior art, can reduce vibrations and noise, convenient to use improves stability and work efficiency.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic structural view of a head for an embroidery machine according to the present invention;

FIG. 2 is a schematic structural view of a color changing driving mechanism;

FIG. 3 is a schematic view of a part of the structure of a head for an embroidery machine according to the present invention;

FIG. 4 is a schematic view of the drive base of the presser foot assembly;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic perspective view of the middle thread passing device and the isolation mechanism arranged on the needle bar frame;

FIG. 7 is a side view of FIG. 6 with portions of the insert sheet removed;

FIG. 8 is a cross-sectional view C-C of FIG. 7;

FIG. 9 is a view of the mating mounting of the upper mounting plate with the insert;

FIG. 10 is a schematic view of the construction of the insert;

FIG. 11 is a schematic structural view of a wire-passing torsion spring;

FIG. 12 is a schematic structural view of a mid-span line device;

FIG. 13 is a partial cross-sectional view of the mid-span apparatus;

FIG. 14 is a schematic view of a fixed resilient clip;

fig. 15 is a schematic structural view of the wire guide mechanism.

In the figure: 41-a machine head main shaft, 42-a bearing seat, 43-a balance block, 44-a cantilever body, 45-a needle bar frame, 46-a thread take-up lever transmission assembly, 47-a needle bar transmission assembly, 48-a presser foot transmission assembly, 49-a main driving cam, 50-a middle thread passing device, 60-an isolation mechanism, 70-a color changing driving mechanism, 80-embroidery thread, 410-a presser foot cam, 411-a guide rod, 412-an angle indicating ring, 413-an angle pointer, 414-an optical coupling induction sheet, 415-an optical coupling sensor, 416-a synchronous pulley, 417-a slideway, 418-a connecting groove, 701-a color changing motor, 702-a color changing cam, 703-a color changing roller, 704-a rotation sensor, 461-a connecting rod V, 462-a rotating shaft II, a rotating shaft II, 463-swing arm, 464-roller, 471-connecting rod IV, 472-needle bar component driving seat, 480-presser foot component driving seat, 481-connecting rod I, 482-rotating shaft I, 483-connecting rod II, 484-connecting rod III, 4801-transmission sliding block, 4802-sliding sleeve, 4803-input transmission rod, 4804-output transmission body, 4805-groove, 4806-blind hole, 4807-oil guide wool felt, 4808-oil outlet hole, 4809-buffer block, 48010-fixing screw, 50-middle wire passing device, 61-upper mounting plate, 62-inserting sheet, 63-lower mounting plate, 64-partition plate, 65-notch, 66-side cover, 611-notch I, 612-notch II, 613-notch III, 621-baffle body, 622-plug slot body, 623-elastic buckle, 624-positioning hook, 625-positioning body, 626-wire passing slot, 51-support body, 52-wire passing barrier piece, 53-tension adjusting device, 531-wire passing torsion spring, 532-wire passing rod, 533-connecting shaft, 534-torsion spring sleeve, 535-fixed gear sleeve, 536-movable gear sleeve, 537-spring, 538-adjusting handle, 539-limit sleeve, 5310-mounting sleeve, 5311-slotted hole, 5312-gap, 5313-sleeve body, 5314-fixed hole cover, 521-wire passing barrier piece, 522-connecting seat, 53110-wire passing hook, 500-wire guide mechanism, 501-wire guide rod, 502-support body, 503-fixed elastic buckle, 5031-base, 5032-groove-shaped barrier piece, 5033-elastic card body, 50331-body, 50332-holding part, 50333-introduction part.

[ detailed description ] embodiments

Referring to fig. 1 to 15, the head for an embroidery machine of the present invention includes a head spindle 41, a plurality of bearing seats 42, a balance block 43, a cantilever 44, a needle bar frame 45 having a needle bar assembly, a presser foot assembly and a thread take-up assembly, a thread take-up transmission assembly 46, a needle bar transmission assembly 47 and a presser foot transmission assembly 48, wherein the head spindle 41 is disposed on the cantilever 44 through the bearing seats 42, the head spindle 41 is provided with the balance block 43, the front end of the cantilever 44 is provided with the needle bar frame 45 through a slide 417, the front end of the cantilever 44 is provided with a color changing driving mechanism 70 for driving the needle bar frame 45, the head spindle 41 drives the thread take-up transmission assembly 46, the needle bar transmission assembly 47 and the presser foot transmission assembly 48, the needle bar frame 45 is provided with a middle thread passing device 50 and an isolation mechanism 60, the isolation mechanism 60 includes an upper mounting plate 61 above the middle thread passing device 50 and a lower mounting plate 63 below the middle thread passing device 50, the upper mounting plate 61 is provided with an inserting sheet 62 which is detachably and fixedly connected and separates a thread passing area above and below the middle thread passing device 50 from the outside, the color changing driving mechanism 70 comprises a color changing motor 701, a color changing cam 702, a plurality of color changing rollers 703 and a rotating sensor 704, the rotating shaft of the color changing motor 701 is provided with the color changing cam 702, the needle bar frame 45 is provided with the color changing rollers 703 which are uniformly arranged at intervals and matched with the thread-shaped cam grooves of the color changing cam 702, the rotating sensor 704 is connected with the rotating shaft of the color changing motor 701, the rear end of the handpiece spindle 41 is provided with two bearing seats 42 and a synchronous pulley 416, an optical coupling induction sheet 414 and an angle indication ring 412 which are arranged between the two bearing seats 42 and are sequentially arranged from front to back, and further comprises an angle pointer 413 matched with the angle indication ring 412 and an optical coupling sensor 415 matched with the optical coupling induction sheet 414, the front end of the machine head spindle 41 is provided with a main driving cam 49, a bearing seat 42, a balance block 43 and a presser foot cam 410 from front to back in sequence, the presser foot transmission assembly 48 comprises a presser foot assembly driving seat 480, a connecting rod I481, a rotating shaft I482, a connecting rod II483 and a connecting rod III484, the rear end of the rotating shaft I482 is connected with a roller in a cam groove of the presser foot cam 410 through the connecting rod I481, the front end of the rotating shaft I482 is connected with one end of the connecting rod III484 through the connecting rod II483, the other end of the connecting rod III484 is connected with the presser foot assembly driving seat 480, the presser foot assembly driving seat 480 is sleeved on two guide rods 411 fixedly arranged in the front end of the cantilever body 44, the needle rod transmission assembly 47 comprises a connecting rod IV 471 and a needle rod assembly driving seat 472, one end of the connecting rod IV 471 is eccentrically connected with the front end of the main driving cam 49, and the other end is connected with the needle rod assembly, the thread take-up lever transmission assembly 46 includes a connecting rod v 461, a rotating shaft II462, a swing arm 463 and a roller 464, one end of the rotating shaft II462 is connected with a roller in a cam groove on the peripheral surface of the main driving cam 49 through the connecting rod v 461, the other end of the rotating shaft II462 is provided with the swing arm 463, the swing arm 463 is provided with the roller 464 matching with the connecting groove 418 of the thread take-up lever assembly, the presser foot assembly driving seat 480 includes a transmission slider 4801, two sliding sleeves 4802, an input transmission rod 4803 and an output transmission body 4804, the transmission slider 4801 is provided with two guide holes, the guide holes are respectively provided with the sliding sleeves 4802, the sliding sleeves 4802 are respectively provided with a guide rod 411, the front end of the transmission slider 4801 is inserted with the input transmission rod 4803 fixedly connected with the transmission slider 4801 through a fixing screw 48010, the rear end of the transmission slider 4801 is provided with an output transmission body 4804, the front end of the input, be equipped with in blind hole 4806 and lead oily wool felt 4807, input transfer line 4803 global be equipped with a plurality of oil outlet 4808 with blind hole 4806 intercommunication, be equipped with buffer block 4809 on the output transmission body 4804, the central axis of input transfer line 4803 and buffer block 4809's work end all is located between the central axis of two guide bars 411, be equipped with on the input transfer line 4803 and be used for set screw 48010) top groove 4805 of tightly inputting transfer line 4803, inserted sheet 62 is including keeping off body 621 and plug groove body 622, be equipped with on the mounting panel 63 down with plug groove body 622 one-to-one and insert the baffle 64 in the plug groove body 622, the upper end of keeping off the body 621 is equipped with elastic buckle 623, the front end lower part that keeps off the body 621 is equipped with location hook 624, the front end upper portion that keeps off the body 621 is equipped with the location body 625, the right side that keeps off the body 621 is equipped with line groove 626, be equipped, The positioning body 625 and the positioning hook 624 are matched with a slotted hole I611, a slotted hole II612 and a slotted hole III613, the upper mounting plate 61 is provided with notches 65 which are corresponding to and matched with the take-up levers one by one, two ends of the upper mounting plate 61 are provided with side covers 66, the middle wire passing device 50 comprises a support body 51, a wire passing barrier 52 and a tension adjusting device 53, the support body 51 is provided with the wire passing barrier 52 and the tension adjusting device 53 positioned below the wire passing barrier 52, the wire passing barrier 52 comprises wire passing barriers 521 which are sequentially arranged from front to back, the tension adjusting device 53 comprises wire passing torsion springs 531 and wire passing levers 532 which are corresponding to the wire passing barriers 521 one by one, the free ends of the wire passing torsion springs 531 are provided with wire passing hooks 53110, the wire passing levers 532 are positioned below the wire passing hooks 53110, the tension adjusting device 53 further comprises connecting shafts 533, a plurality of torsion spring sleeves 534, mounting sleeves 5310 and adjusting mechanisms, the connecting shaft 533 is rotatably arranged on the connecting lugs 511 at two ends of the support body 51, a mounting sleeve 5310 and a torsion spring sleeve 534 behind the mounting sleeve 5310 are fixedly sleeved on the connecting shaft 533 between the two connecting lugs 511, a wire-passing torsion spring 531 is arranged in each torsion spring sleeve 534, one end of each wire-passing torsion spring 531 is fixedly connected with the torsion spring sleeve 534, the other free end of each wire-passing torsion spring 531 extends out of a slot 5311 on the torsion spring sleeve 534, an adjusting mechanism fixedly connected with the connecting lug 511 behind is arranged at the rear end of the connecting shaft 533, the adjusting mechanism comprises a fixed gear sleeve 535, a movable gear sleeve 536, a spring 537, an adjusting handle 538 and a limiting sleeve, an adjusting handle 538, a limiting sleeve 539, a spring 537 and a movable gear sleeve 536 are sequentially sleeved at the rear end of the connecting shaft 533 from back to front, a sleeve body 53913 between the connecting lug 533 and the connecting lug 511 behind is arranged at the front end of the movable gear sleeve 536, and a fixed gear sleeve 535 fixedly connected with the connecting lug 511 behind is sleeved on the sleeve body 5313, a gap 5312 is arranged between the rear end of the movable tooth sleeve 536 and the limiting sleeve 539, the rear end of the fixed tooth sleeve 535 is engaged with the front end of the movable tooth sleeve 536, the movable tooth sleeve 536 and the mounting sleeve 5310 are provided with a wire passing rod 532, the wire passing rod 532 is slidably connected with the movable tooth sleeve 536, the screwing part of the adjusting handle 538 is positioned outside the side cover 66, the adjusting handle 538 and the limiting sleeve 539 are fixedly connected with the connecting shaft 533, the rear end of the adjusting handle 538 is provided with a fixed hole sealing cover 5314, the wire passing barrier 52 further comprises a connecting seat 522 integrally formed with all the wire passing barriers 521, the free end of each wire passing barrier 521 is provided with an inserting part 523 inserted into the inserting seat 622, the wire guide mechanism 500 is arranged on the lower mounting plate 63 and positioned below the partition 64, the wire guide mechanism 500 comprises a wire guide rod 501, a seat body 502 and a fixed elastic buckle 503, and the rear end of the wire guide rod 501 is rotatably connected with the mounting seat body 502, the front end of the wire rod 501 is detachably and fixedly connected with the fixed elastic buckle 503, the side cover 66 is provided with an avoiding groove 67 for avoiding the wire rod 501, the fixed elastic buckle 503 comprises a base 5031, a groove 5032 and two elastic clamping bodies 5033, the base 5031 is provided with the groove 5032 matched with the front end of the wire rod 501, the base 5031 is provided with the elastic clamping bodies 5033 for clamping the front end of the wire rod 501 at two sides of the groove 5032, the elastic clamping bodies 5033 comprise a body 50331, one end of the body 50331 close to the groove 5032 is provided with an inclined clamping part 50332, and the free end of the clamping part 50332 is bent outwards to form an inclined guiding part 50333.

The utility model discloses the working process:

the utility model relates to a aircraft nose for embroidery machine is in the course of the work, and the embroidery line through thread trapper assembly output passes through in proper order that the line crosses and separates the right side that keeps off 521, cross line hook 53110, cross the left side that the line separates fender 521, the take-up lever, cross the left side that the line separates fender 521, the outside of wire pole 532, the inboard of wire pole 501 and lower line subassembly, finally to the embroidery needle.

When tension is adjusted, the adjusting handle 538 is rotated clockwise or counterclockwise, the adjusting handle 538 drives the torsion spring sleeve 534, the mounting sleeve 5310 and the movable gear sleeve 536 to rotate through the connecting shaft 533, the mounting sleeve 5310 and the movable gear sleeve 536 drive the wire passing rod 532 to move, one or more teeth are jumped between the movable gear sleeve 536 and the fixed gear sleeve 535 for matching, and the torsion spring sleeve 534 drives the wire passing torsion spring 531 to rotate clockwise or counterclockwise, so that tension adjustment is realized.

The synchronous belt wheel 416 is driven by a driving mechanism and drives the machine head main shaft 41 to rotate, the machine head main shaft 41 drives the main driving cam 49 and the presser foot cam 410 to rotate, the presser foot cam 410 drives the connecting rod I481 to swing in a reciprocating mode, the connecting rod I481 drives the connecting rod II483 to swing through the rotating shaft I482, the connecting rod II483 drives the presser foot assembly driving seat 480 to move up and down through the connecting rod III484, and the presser foot assembly driving seat 480 drives the presser foot assembly to work; the main driving cam 49 drives the needle bar assembly driving seat 472 to move up and down through the connecting rod IV 471, and the needle bar assembly driving seat 472 drives the needle bar assembly to work; the main driving cam 49 drives the connecting rod V461 to swing in a reciprocating way, the connecting rod V461 drives the swinging arm 463 to swing through the rotating shaft II462, and the swinging arm 463 drives the take-up lever assembly to work through the roller 464.

The color changing motor 701 drives the color changing cam 702 to rotate, and the color changing cam 702 drives the needle bar frame 45 to move through the color changing roller 703, so that color changing is realized.

When the thread is manually led, the thread guiding rod 501 is firstly pulled to rotate by 90 degrees, after the threading is completed, the thread guiding rod 501 is pulled again, so that the front end of the thread guiding rod 501 is fixed in the groove 5032, at the moment, the embroidery thread is naturally positioned at the inner side of the thread guiding rod 501, and the convenience is improved.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims (10)

1. A head for an embroidery machine, characterized in that: comprises a machine head main shaft (41), a plurality of bearing seats (42), a balance block (43), a cantilever body (44), a needle bar frame (45) provided with a needle bar assembly, a presser foot assembly and a thread take-up bar assembly, a thread take-up bar transmission assembly (46), a needle bar transmission assembly (47) and a presser foot transmission assembly (48), wherein the machine head main shaft (41) is arranged on the cantilever body (44) through the bearing seats (42), the machine head main shaft (41) is provided with the balance block (43), the front end of the cantilever body (44) is provided with the needle bar frame (45) through a slideway (417), the front end of the cantilever body (44) is provided with a color changing driving mechanism (70) for driving the needle bar frame (45), the machine head main shaft (41) drives the thread take-up bar transmission assembly (46), the needle bar transmission assembly (47) and the presser foot transmission assembly (48), the needle bar frame (45) is provided with a middle thread passing device, isolation mechanism (60) are including last mounting panel (61) that are arranged in wire passing device (50) top and lower mounting panel (63) that are arranged in wire passing device (50) below, upward be equipped with on mounting panel (61) can dismantle fixed connection and with wire passing device (50) about with in wire passing device (50) cross regional with external spaced inserted sheet (62).

2. A head for an embroidery machine as defined in claim 1, characterized in that: trade look actuating mechanism (70) including trade look motor (701), trade look cam (702), a plurality of trade look roller (703) and rotation sensor (704), trade and be equipped with on the axis of rotation of look motor (701) and trade look cam (702), be equipped with interval align to grid on needle bar frame (45) and trade look roller (703) with the screw thread form cam slot matched with of trading look cam (702), rotation sensor (704) and the rotation axis connection who trades look motor (701).

3. A head for an embroidery machine as defined in claim 1, characterized in that: the rear end of aircraft nose main shaft (41) is equipped with two bearing frames (42) and is located synchronous pulley (416), optical coupling response piece (414) and angle indicating ring (412) that two bearing frames (42) set gradually after to by the front, still includes angle pointer (413) with angle indicating ring (412) matched with and optical coupling response piece (414) matched with optical coupling sensor (415), the front end of aircraft nose main shaft (41) is equipped with main drive cam (49), a bearing frame (42), balancing piece (43) and presser foot cam (410) by preceding after to in proper order.

4. A head for an embroidery machine as defined in claim 1, characterized in that: the presser foot transmission assembly (48) comprises a presser foot assembly driving seat (480), a connecting rod I (481), a rotating shaft I (482), a connecting rod II (483) and a connecting rod III (484), the rear end of the rotating shaft I (482) is connected with a roller in a cam groove of a presser foot cam (410) through the connecting rod I (481), the front end of the rotating shaft I (482) is connected with one end of the connecting rod III (484) through the connecting rod II (483), the other end of the connecting rod III (484) is connected with the presser foot assembly driving seat (480), the presser foot assembly driving seat (480) is sleeved on two guide rods (411) fixedly arranged in the front end of a cantilever body (44), the needle rod transmission assembly (47) comprises a connecting rod IV (471) and a needle rod assembly driving seat (472), one end of the connecting rod IV (471) is eccentrically connected with the front end of a main driving cam (49), and the other end of the connecting rod IV (471) is connected with the needle rod assembly driving seat (472) slidably arranged on the two, the take-up lever transmission assembly (46) comprises a connecting rod V (461), a rotating shaft II (462), a swinging arm (463) and a roller (464), one end of the rotating shaft II (462) is connected with a roller in a cam groove on the peripheral surface of a main driving cam (49) through the connecting rod V (461), the other end of the rotating shaft II (462) is provided with a swinging arm (463), and the swinging arm (463) is provided with the roller (464) matched with a connecting groove (418) of the take-up lever assembly.

5. The head for an embroidery machine as claimed in claim 4, wherein: the presser foot component driving seat (480) comprises a transmission sliding block (4801), two sliding sleeves (4802), an input transmission rod (4803) and an output transmission body (4804), wherein the transmission sliding block (4801) is provided with two guide holes, the sliding sleeves (4802) are arranged in the guide holes, guide rods (411) penetrate through the sliding sleeves (4802), the input transmission rod (4803) fixedly connected with the transmission sliding block (4801) through a fixing screw (48010) is inserted into the front end of the transmission sliding block (4801), the output transmission body (4804) is arranged at the rear end of the transmission sliding block (4801), a blind hole (4806) is arranged at the front end of the input transmission rod (4803), an oil guide wool felt (4807) is arranged in the blind hole (4806), a plurality of oil outlet holes (4808) communicated with the blind hole (4806) are formed in the peripheral surface of the input transmission rod (4803), and a buffer block (4809) is arranged on the output transmission body (4804), the central axis of the work end of input transfer line (4803) and buffer block (4809) all is located between the central axis of two guide bars (411), be equipped with on input transfer line (4803) and be used for set screw (48010) to push up recess (4805) of input transfer line (4803).

6. A head for an embroidery machine as defined in claim 1, characterized in that: the inserting piece (62) comprises a blocking body (621) and a plug-in groove body (622), the lower mounting plate (63) is provided with partition plates (64) which are in one-to-one correspondence with the plug-in groove body (622) and are inserted into the plug-in groove body (622), the upper end of the blocking body (621) is provided with an elastic buckle (623), the lower part of the front end of the blocking body (621) is provided with a positioning hook (624), a positioning body (625) is arranged at the upper part of the front end of the blocking body (621), a wire passing groove (626) is arranged at the right side of the blocking body (621), a slotted hole I (611), a slotted hole II (612) and a slotted hole III (613) which are respectively matched with the elastic buckle (623), the positioning body (625) and the positioning hook (624) are arranged on the upper mounting plate (61), the upper mounting plate (61) is provided with notches (65) which correspond to the take-up levers one by one and are matched with the take-up levers, and two ends of the upper mounting plate (61) are provided with side covers (66).

7. A head for an embroidery machine as defined in claim 1, characterized in that: the middle wire passing device (50) comprises a support body (51), a wire passing blocking piece (52) and a tension adjusting device (53), wherein the wire passing blocking piece (52) and the tension adjusting device (53) located below the wire passing blocking piece (52) are arranged on the support body (51), the wire passing blocking piece (52) comprises wire passing blocking pieces (521) which are sequentially arranged from front to back, the tension adjusting device (53) comprises wire passing torsion springs (531) and wire passing rods (532) which are in one-to-one correspondence with the wire passing blocking pieces (521), wire passing hooks (53110) are formed at free ends of the wire passing torsion springs (531), and the wire passing rods (532) are located below the wire passing hooks (53110).

8. The head for an embroidery machine as claimed in claim 7, wherein: tension adjusting device (53) still include connecting axle (533), a plurality of torsional spring cover (534), installation cover (5310) and adjustment mechanism, connecting axle (533) is rotatable to be established on engaging lug (511) of pedestal (51) both ends, two fixed cover is equipped with installation cover (5310) and torsional spring cover (534) that is located installation cover (5310) rear on connecting axle (533) between engaging lug (511), every be equipped with one in torsional spring cover (534) and cross line torsional spring (531), cross the one end and torsional spring cover (534) fixed connection of line torsional spring (531), slotted hole (5311) on torsional spring cover (534) are stretched out to another free end, the rear end of connecting axle (533) is equipped with the adjustment mechanism with engaging lug (511) fixed connection at rear.

9. A head for an embroidery machine as defined in claim 8, wherein: the adjusting mechanism comprises a fixed gear sleeve (535), a movable gear sleeve (536), a spring (537), an adjusting handle (538) and a limiting sleeve (539), the adjusting handle (538), the limiting sleeve (539), the spring (537) and the movable gear sleeve (536) are sequentially sleeved at the rear end of the connecting shaft (533) from back to front, a sleeve body (5313) positioned between the connecting shaft (533) and a connecting lug (511) at the rear is arranged at the front end of the movable gear sleeve (536), the sleeve body (5313) is sleeved with the fixed gear sleeve (532) fixedly connected with the connecting lug (511) at the rear, a gap (5312) is arranged between the rear end of the movable gear sleeve (536) and the limiting sleeve (539), the rear end of the fixed gear sleeve (535) is meshed and connected with the front end of the movable gear sleeve (536), a wire passing rod (532) is arranged on the movable gear sleeve (536) and the mounting sleeve (5310), and the wire passing rod (532) is connected with the movable gear sleeve (536) in a sliding manner, the adjusting handle (538) is screwed outside the side cover (66), the adjusting handle (538) and the limiting sleeve (539) are fixedly connected with the connecting shaft (533), the rear end of the adjusting handle (538) is provided with a fixing hole sealing cover (5314), the wire passing barrier piece (52) further comprises a connecting seat (522) integrally formed with all the wire passing barrier pieces (521), and the free end of the wire passing barrier piece (521) is provided with an inserting part (523) inserted into the inserting groove body (622).

10. A head for an embroidery machine as claimed in any one of claims 1 to 9, characterized in that: the wire guiding device further comprises a wire guiding mechanism (500) which is arranged on the lower mounting plate (63) and is positioned below the partition plate (64), the wire guiding mechanism (500) comprises a wire guiding rod (501), a seat body (502) and a fixed elastic buckle (503), the rear end of the wire guiding rod (501) is rotatably connected with the mounting seat body (502), the front end of the wire guiding rod (501) is detachably and fixedly connected with the fixed elastic buckle (503), an avoiding groove (67) which avoids the wire guiding rod (501) is arranged on the side face shield (66), the fixed elastic buckle (503) comprises a base (5031), a groove (5032) and two elastic clamping bodies (5033), the base (5031) is provided with a groove (5032) which is matched with the front end of the wire guiding rod (501), the base (5031) is provided with elastic clamping bodies (5033) which clamp the front end of the wire guiding rod (501) on two sides of the groove (5032), the elastic clamping bodies (5033) comprise a body (50331), an inclined clamping part (50332) is formed at one end of the body (50331) close to the groove (5032), and an inclined lead-in part (50333) is formed by outwards bending the free end of the clamping part (50332).

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