CN214060896U

CN214060896U - Embroidery machine head

Info

Publication number: CN214060896U
Application number: CN202022301292.6U
Authority: CN
Inventors: 张丁元; 魏大江; 陈信宝; 王亮; 曹万里; 王淡军
Original assignee: Zhuji Maya Electric Appliance Machinery Co ltd
Current assignee: Zhuji Maya Electric Appliance Machinery Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-08-27
Anticipated expiration: 2030-10-15

Abstract

The utility model belongs to the technical field of the embroidery machine, especially, relate to an embroidery machine aircraft nose. The utility model discloses, including the aircraft nose casing, be provided with the guide arm at the vertical fixed of aircraft nose casing front portion, axial interval activity is provided with presser foot driver and needle bar driver on the guide arm, the needle bar driver link to each other with needle bar actuating mechanism, the presser foot driver link to each other with presser foot actuating mechanism. The utility model discloses a connect the state switching that falls the needle and break away from not falling the needle to the needle bar when embroidering at high speed, when the needle bar is no longer underhung to needs, make the needle bar break away from with the needle bar driver mutually, avoid high-speed needle bar striking presser foot, damage machine part, it can only to rotate to initial position with clutch structure to reconnect the needle bar and make the needle bar whereabouts again, continue the whereabouts through needle bar driver drive needle bar, degree of automation is higher, and the connection of needle bar or break away from the switching simple fast, practicality and stability are stronger, reduce the loss that causes the needle bar to fall the needle because tapered end motor fault.

Description

Embroidery machine head

Technical Field

The utility model belongs to the technical field of the embroidery machine, a embroidery machine aircraft nose is related to.

Background

The main movement of the computerized embroidery machine is similar to that of a sewing machine, and the main embroidery action is divided into the movement of an upper thread and a lower thread. The needle bar moves up and down according to a certain movement rule, and a presser foot is connected to the needle bar in the traditional embroidery machine, and the needle bar is driven by a needle bar driving mechanism to move. The needle bar mechanism in the computer embroidery machine is an important component, generally adopts a needle bar driver to drive a needle bar to reciprocate up and down to drop a needle, and generally realizes control by a tapered end motor in the prior art. However, if the lock motor breaks down, the needle bar falls down, the needle bar is easy to impact the presser foot and damage other mechanical parts, the stability and the convenience of the lock motor for controlling the needle bar are poor, and the failure rate is high.

In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a chinese patent discloses a high-speed head assembly for a computerized embroidery machine [ application No.: 201410326776.2], including aircraft nose mechanism, fixture and needle bar frame, the needle bar frame is installed on aircraft nose mechanism through the slide, install fixture on needle bar frame and the aircraft nose mechanism, compare with prior art, the utility model discloses not only can prevent to deviate from in the pinhole under the effect of external force, the embroidery thread can be loosened again during the start and the embroidery thread normally works, can stand wear and tear moreover, long service life, reduction in production cost, and the transmission is steady, can also the same style of mixed embroidery of different footpaths to do not influence production. But stability and the convenience of the tapered end motor control needle bar in this scheme are still relatively poor, and the fault rate is higher, causes the condition of needle bar striking presser foot and damaging other machine parts easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above problem, provide an embroidery machine aircraft nose.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

an embroidery machine head comprises a head shell, a guide rod is vertically and fixedly arranged at the front part of the head shell, a presser foot driver and a needle bar driver are axially and alternately arranged on the guide rod, the needle bar driver is connected with a needle bar driving mechanism, the presser foot driver is connected with the presser foot driving mechanism, the needle rod driver is connected with the needle rod through a clutch structure, a linkage type clutch control structure which is powered by the presser foot driver so as to control the action of the clutch structure is arranged between the presser foot driver and the needle rod driver, the linkage type clutch control structure controls the clutch structure to act when the presser foot driver is in a lifting state and the needle bar driver is in a lifting state so as to enable the needle bar driver to be mutually separated from the needle bar, and when the presser foot driver descends, the clutch structure resets so as to connect the needle bar driver and the needle bar with each other.

In the embroidery machine head, the presser foot driving mechanism is an independent driving mechanism arranged on the machine head shell and comprises a presser foot driving motor which is fixed outside the cavity of the machine head shell and positioned at the back of the machine head shell, a power shaft of the presser foot driving motor penetrates into the machine head shell and is connected with a presser foot driving transmission structure which converts rotary power into vertical reciprocating power, and the presser foot driving transmission structure is connected with a presser foot driver.

In the embroidery machine head, the presser foot driving motor is arranged on one side of the back of the machine head shell; the guide rod is arranged in the transverse middle of the front part of the machine head shell; the presser foot driving transmission structure penetrates through the cavity of the machine head shell from the rear part of the machine head shell to the transverse middle part of the front part of the machine head shell; the presser foot drive transmission structure comprises a rigid coupling component and a power reversing component, one end of the rigid coupling component is connected with a presser foot drive motor, the other end of the rigid coupling component is connected with the power reversing component, and the power reversing component is connected with a presser foot driver; the side of the machine head shell is provided with a shaft seat which is integrated with the machine head shell, and the power reversing assembly penetrates through the shaft seat.

In the embroidery machine head, the machine head shell comprises a shell seat with an integrated structure, the shell seat comprises a back plate, the lower end of the back plate is provided with an inclined bottom plate, one side of the back plate and the inclined bottom plate is provided with a full side plate, the other side of the back plate and the inclined bottom plate is provided with a half side plate, a cantilever is arranged above the half side plate, the cantilever and the upper part of the full side plate are both connected with a guide rail seat which is transversely arranged, an opening is formed between the cantilever and the half side plate, the back plate, the inclined bottom plate, the full side plate, the half side plate, the cantilever and the guide rail seat are connected into a whole, the upper part of the full side plate is provided with a main shaft mounting hole, and the main shaft mounting hole is opposite to the opening; the top of the half side plate is provided with a protruding shaft seat, the shaft seat is provided with a transmission shaft hole which is through from front to back, and the shaft seat is positioned in the middle of the top of the half side plate and is connected with the half side plate into a whole; the opening is provided with a sealing side plate, the sealing side plate comprises at least one spliced side plate, a main shaft through hole is formed in the sealing side plate, and the main shaft through hole is superposed with the central axis of the main shaft mounting hole; the sealing side plates comprise a plurality of splicing side plates, wherein two splicing side plates are respectively provided with a half hole, and the two half holes are spliced to form the main shaft through hole; one side of the shaft seat, which is close to the back plate, is provided with an installation gap, the other side of the shaft seat is provided with a abdication gap, and a sealing plate is detachably fixed at the installation gap; the power reversing assembly penetrates out of the abdicating notch when in work.

In the embroidery machine head, the needle bar driving mechanism comprises a driving cam fixed on the main shaft, a circular ring sleeve is sleeved on the periphery of the driving cam, a handle part is arranged at the outer end of the circular ring sleeve and is hinged with the middle part of the driving arm, the rear end of the driving arm is rotationally connected with a cylinder on the fixed machine head shell, the front end of the driving arm is rotationally connected with one end of a small connecting rod, and the other end of the small connecting rod is rotationally connected with the needle bar driver.

In the embroidery machine head, the needle rod driver is connected with the needle rod through the clutch structure, the needle rod axially movably penetrates through the needle rod frame arranged at the front part of the machine head shell, the axial anti-falling structure is arranged between the needle rod frame and the needle rod frame, the needle rod is sleeved with the compression spring, one end of the compression spring acts on the needle rod frame, the other end of the compression spring acts on the needle rod, and when the clutch structure is in a state that the needle rod driver is separated from the needle rod, the needle rod is lifted by the compression spring so that the needle rod is in a position locking state.

In the embroidery machine head, the linkage type clutch control structure comprises a transmission mechanism arranged on one side of the guide rod, the power input end of the transmission mechanism is connected with the presser foot driver in a lifting state, and the power output end of the transmission mechanism acts on the needle rod driver so as to control the clutch structure; the transmission mechanism comprises a transmission piece, the middle part of the transmission piece is rotatably connected to the machine head shell, the transmission piece is shaped, a supported part is arranged at the lower end of the transmission piece, a pushing part acting on the needle rod driver is arranged at the upper end of the transmission piece, and a pushing part for lifting the supported part when the presser foot driver is in a lifting state is arranged on the presser foot driver; the pushing and lifting part is arranged on the presser foot driver and transversely extends, and the pushing and lifting part and the presser foot driver are connected into a whole; the supporting part is fixed at the lower end of the transmission part through a pin extending transversely, and the supporting part extends forwards; the pushing and lifting part is positioned above the supported part, and the vertical projections of the pushing and lifting part and the supported part are mutually crossed; the pushing part is cylindrical and transversely extends to the front side of the needle bar driver; the driving medium set up on the aircraft nose casing through the pivot, the cover is equipped with the return torsional spring in the pivot, the return torsional spring act on respectively on driving medium and aircraft nose casing.

In the embroidery machine head, the needle bar driver comprises a lifting slide seat sleeved on the guide rod, the lifting slide seat is provided with a driving clutch piece which is axially positioned and circumferentially and rotatably connected with the lifting slide seat, a clutch structure which can be separated from the needle bar after the driving clutch piece circumferentially rotates is arranged between the driving clutch piece and the needle bar, a circumferentially rotating reset spring which can reset the circumferentially rotated driving clutch piece so as to enable the needle bar driver to be connected with the needle bar again is arranged between the lifting slide seat and the driving clutch piece, the driving clutch piece is provided with a presser foot linkage part which axially extends along the driving clutch piece, and the pushing part is in sliding contact or rolling contact with the presser foot linkage part.

In the embroidery machine head, the presser foot linkage part is columnar and is arranged on one side of the driving clutch piece, and two ends of the presser foot linkage part respectively exceed the end part of the driving clutch piece; the opposite side of drive separation and reunion piece be equipped with motor promotion portion, the both ends of motor promotion portion surpass the tip of drive separation and reunion piece respectively, be equipped with motor pushing mechanism in the outside of motor promotion portion, motor pushing mechanism including fixing the motor at the aircraft nose casing, the output shaft of motor on be fixed with the swing arm, the swing arm outer end be fixed with the push rod, push rod and motor promotion portion sliding contact or rolling contact.

In the embroidery machine head, the pushing part is positioned at the front side of the presser foot linkage part, and the push rod is positioned at the rear side of the motor pushing part; a rotation limiting structure is arranged between the lifting slide seat and the driving clutch piece, the limiting direction of the rotation limiting structure is opposite to the circumferential rotation direction of the driving clutch piece, the rotation limiting structure comprises a limiting body fixed on the lifting slide seat and a limiting surface arranged on the driving clutch piece, the limiting body and the limiting surface are mutually abutted under the action of a circumferential rotation reset spring, and the clutch structure is in a state that the needle rod driver is connected with the needle rod when the limiting body and the limiting surface are mutually abutted; the push rod comprises a rod body and a rolling body rotatably connected to the outer end of the rod body, and the rolling body is in contact with the motor pushing part; the driving clutch piece is made of plastic; the circumferential rotation return spring comprises a torsion spring, one foot of the torsion spring is connected with the lifting sliding seat, and the other foot of the torsion spring is connected with the driving clutch piece; the clutch structure comprises a bayonet arranged on the driving clutch piece and a chuck arranged on the needle rod, the bayonet transversely extends, two ends of the bayonet are communicated, and the chuck can be clamped into or separated from the bayonet when the driving clutch piece rotates circumferentially.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a connect the state switching that falls the needle and break away from not falling the needle to the needle bar when embroidering at high speed, when the needle bar is no longer underhung to needs, make the needle bar break away from with the needle bar driver mutually, avoid high-speed needle bar striking presser foot, damage machine part, it can only to rotate to initial position with clutch structure to reconnect the needle bar and make the needle bar whereabouts again, continue the whereabouts through needle bar driver drive needle bar, degree of automation is higher, and the connection of needle bar or break away from the switching simple fast, practicality and stability are stronger, reduce the loss that causes the needle bar to fall the needle because tapered end motor fault.

2. The utility model discloses a set up rigidity coupling subassembly and power switching-over subassembly, connect the transmission to presser foot driving motor and presser foot actuating mechanism, this connected mode can make presser foot driving motor's output shaft need not the overlength, has improved presser foot driving motor's output shaft's rigidity in the course of the work, has improved presser foot actuating mechanism's work precision, and the dismouting is also comparatively simple simultaneously, conveniently connects, and cost of maintenance and the degree of difficulty are lower.

3. The utility model discloses a set up the installation breach, can make things convenient for the fixed axle bed of staff's installation, the operable space when providing the dismouting, the breach of stepping down plays the effect of stepping down, can better rational utilization space.

4. The utility model discloses a set up spacing face and spacing body, when needle bar separation and reunion structure rotated to the needle bar continuous state, spacing face and spacing body looks butt cooperation on the drive separation and reunion piece for the drive separation and reunion piece can not carry out excessive rotation to the opposite direction of the circumferential direction of drive separation and reunion piece again, realizes spacing to the drive separation and reunion piece, and makes separation and reunion structure and needle bar realize zonulae occludens under the continuous state.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

Fig. 3 is an exploded schematic view of fig. 2.

Fig. 4 is a schematic structural view in another direction of the present invention.

Fig. 5 is a partial structural schematic diagram in another direction of the present invention.

Fig. 6 is a schematic structural view of the needle bar driver.

Fig. 7 is a schematic structural view in another direction of the present invention.

Fig. 8 is a partial structural schematic view in another direction of the present invention.

Fig. 9 is a partial structural schematic view in another direction of the present invention.

Fig. 10 is a schematic structural view in another direction of the present invention.

Fig. 11 is a schematic structural view of the needle bar drive mechanism.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-11, an embroidery machine head comprises a head housing 35, a guide rod 30 is vertically and fixedly arranged at the front of the head housing 35, a presser foot driver 8 and a needle bar driver 31 are axially and movably arranged on the guide rod 30 at intervals, the needle bar driver 31 is connected with a needle bar driving mechanism 130, the presser foot driver 8 is connected with a presser foot driving mechanism 60a, the needle bar driver 31 is connected with a needle bar 5 through a clutch structure 32, a linkage type clutch control structure 33 which is powered by the presser foot driver 8 and controls the clutch structure 32 to act is arranged between the presser foot driver 8 and the needle bar driver 31, the linkage type clutch control structure 33 controls the clutch structure 32 to act when the presser foot driver 8 is in a lifting state and the needle bar driver 31 is in a lifting state so as to mutually separate the needle bar driver 31 and the needle bar 5, and the clutch structure 32 is reset after the presser foot driver 8 is lowered to interconnect the needle bar driver 31 and the needle bar 5.

In this embodiment, the presser foot driver 8 and the needle bar driver 31 can make reciprocating linear motion along the axial direction of the guide rod 30, the linkage type clutch control structure 33 can drive the clutch structure 32 to make circumferential rotation along the axial direction of the guide rod 30, and further complete the state switching of connection or disconnection between the needle bar driver 31 and the needle bar 5 through the rotation of the clutch structure 32, when the lock is required to be out of work, the needle bar 5 can be disconnected from the needle bar driver 31 through the linkage type clutch control structure 33, the needle bar 5 is not dropped, the high-speed needle bar is prevented from impacting the presser foot, the mechanical parts are damaged, the needle bar 5 is reconnected and the needle bar 5 falls down again only by rotating the clutch structure 32 to the initial position, the needle bar 5 is driven to fall down continuously through the needle bar driver 31, the needle bar driving mechanism 130 is used for driving the needle bar driver 31 to move, the presser foot driving mechanism 60a is used for driving the presser foot driver 8 to move, the degree of automation is high, the connection or disconnection switching of the needle rod is simple and quick, and the practicability and the stability are high;

namely, the electric control of the lock motor and the mechanical control of the linkage type clutch control structure 33 taking the presser foot driver 8 as power can realize the clutch control of the needle rod driver 31 and the needle rod 5, thereby further improving the control stability and the use flexibility.

As shown in fig. 1-11, the presser foot driving mechanism 60a is an independent driving mechanism disposed on the machine head housing 35, and includes a presser foot driving motor 2a fixed outside the cavity of the machine head housing 35 and located at the back of the machine head housing 35, a power shaft of the presser foot driving motor 2a penetrates into the machine head housing 35 and is connected to a presser foot driving transmission structure 61a for converting a rotary power into a vertical reciprocating power, and the presser foot driving transmission structure 61a is connected to the presser foot driver 8.

In this embodiment, when the presser foot driver 8 needs to be driven to work, the presser foot driving motor 2a is started, the presser foot driving transmission structure 61a is driven to move by the presser foot driving motor 2a, and then the presser foot driver 8 is driven to axially reciprocate by the presser foot driving transmission structure 61 a.

As shown in fig. 1, the presser foot driving motor 2a is disposed on the back side of the head housing 35; the guide rod 30 is arranged in the transverse middle of the front part of the machine head shell 35; the presser foot driving transmission structure 61a penetrates through the cavity of the machine head shell 35 from the rear part of the machine head shell 35 to the transverse middle part of the front part of the machine head shell 35; the presser foot driving transmission structure 61a comprises a rigid coupling component 5a and a power reversing component 6a, one end of the rigid coupling component 5a is connected with the presser foot driving motor 2a, the other end of the rigid coupling component is connected with the power reversing component 6a, and the power reversing component 6a is connected with the presser foot driver 8; the side of the machine head shell 35 is provided with a shaft seat 112 integrally arranged with the machine head shell 35, and the power reversing component 6a penetrates through the shaft seat 112.

In the embodiment, when the presser foot driving part 3a needs to be driven by the presser foot driving motor 2a to work, the output shaft of the presser foot driving motor 2a is inserted into the rigid coupling component 5a, the presser foot driving motor 2a and the presser foot driving mechanism 60a are connected and driven by the rigid coupling component 5a and the power reversing component 6a, the connection mode can ensure that the output shaft of the presser foot driving motor 2a does not need to be overlong, the rigidity of the output shaft of the presser foot driving motor 2a is improved in the working process, the working precision of the presser foot driving mechanism 60a is improved, meanwhile, the dismounting is simple, the connection is convenient, the maintenance cost and the difficulty are low, wherein the power reversing component 6a can convert the rotating power generated by the output shaft of the presser foot driving motor 2a into the vertical reciprocating power so as to drive the presser foot driving mechanism 60a to vertically reciprocate, the cloth pressing machine has the functions of transmission and movement direction change, and is used for pressing cloth.

The rigid coupling assembly 5a comprises a rigid coupling 7a positioned in the machine head shell 35, one end of the rigid coupling 7a is connected with the presser foot driving motor 2a, the other end of the rigid coupling is connected with one end of a transmission shaft 8a, and the other end of the transmission shaft 8a is connected with the power reversing assembly 6 a; the rigid coupling 7a is provided with a longitudinally through opening 9a, a power shaft 10a of the independent presser foot driver 8 is arranged at one end of the rigid coupling 7a in a penetrating way, one end of the transmission shaft 8a is arranged at the other end of the rigid coupling 7a in a penetrating way, and at least one locking screw 11a which draws the opening 9a in a penetrating way so as to fasten the power shaft 10a and the transmission shaft 8a is arranged on the rigid coupling 7a in a penetrating way; the side of the machine head shell 35 is provided with a shaft seat 112 integrally arranged with the machine head shell 35, the transmission shaft 8a is rotatably arranged in the shaft seat 112 in a penetrating way, and at least one bearing 13a is arranged between the shaft seat 112 and the transmission shaft 8 a; the power reversing assembly 6a comprises a driving piece 16a, the driving piece 16a is fixedly connected with a transmission shaft 8a, a transmission connecting rod 17a is rotatably connected at the position, deviating from the central axis of the transmission shaft 8a, of the driving piece 16a, the other end of the transmission connecting rod 17a is rotatably connected with the presser foot driver 8, and a vertical sliding guide mechanism 18a is arranged between the presser foot driver 8 and the machine head shell 35. The vertical sliding guide mechanism 18a includes a sliding rod 19a disposed on the head housing 35, and the presser foot driver 8 is slidably sleeved on the sliding rod 19 a. The presser foot driver 8 comprises a sliding sleeve 20a, the sliding sleeve 20a is sleeved with the sliding rod 19a in a sliding manner, a lateral extension part 21a is arranged on the side part of the sliding sleeve 20a, a sliding groove 23a is arranged at the outer end of the lateral extension part 21a, and the sliding groove 23a is sleeved with the guide rod 30 in a sliding manner. A presser foot rod 24a is vertically arranged at the front part of the machine head shell 35, and a clutch transmission structure is arranged between the presser foot rod 24a and the transverse extension part 21 a; the clutch transmission structure comprises a clamping groove 25a arranged on the front surface of the transverse extension part 21a and a presser foot driving slide block 26a fixedly arranged on the presser foot rod 24a, and a clamping head 43 horizontally entering the clamping groove 25a is arranged on the presser foot driving slide block 26 a.

In the embodiment, the output shaft of the presser foot driving motor 2a is connected with the transmission shaft 8a through the rigid coupling 7a to keep better coaxiality, and then the transmission shaft 8a drives the power reversing assembly 6a to rotate so as to drive the presser foot driving piece 3a to move up and down to change the movement direction and further realize cloth pressing, the output shaft of the presser foot driving motor 2a is the power shaft 10a, the opening 9a is used for facilitating the power shaft 10a and the transmission shaft 8a to be inserted into the rigid coupling 7a, one end of the rigid coupling 7a is in clearance fit with the power shaft 10a of the presser foot driving motor 2a, the other end of the rigid coupling 7a is in clearance fit with the transmission shaft 8a and locked by the locking screw 11a to ensure synchronous rotation, the shaft seat 12a is used for placing the bearing 13a, the inner ring of the bearing 13a is in clearance fit with the transmission shaft 8a, the outer ring of the bearing 13a is in transition fit with the inner hole of the handpiece shell 35, the bearing 13a is used for bearing radial load and axial load, is responsible for supporting the transmission shaft 8a, and improves the transmission precision and the service life of the transmission shaft 8 a; when the transmission shaft 8a rotates, the driving piece 16a and the transmission connecting rod 17a can be synchronously driven to rotate, the transmission connecting rod 17a is arranged at the position, deviated from the central axis of the transmission shaft 8a, of the driving piece 16a, and the transmission connecting rod 17a can rotate, so that the presser foot driving piece 3a is driven to do reciprocating linear motion along the vertical direction, the vertical sliding guide mechanism 18a plays a role in limiting and preventing deviation on the presser foot driving piece 3a, the phenomenon that the presser foot driving piece 3a generates angle deviation in the up-and-down moving process is avoided, and the displacement accuracy is improved; the presser foot driving part 3a is sleeved on the sliding rod 19a in a sliding manner, so that the presser foot driving part 3a is ensured to move vertically along the axial direction of the sliding rod 19a in the up-and-down moving process;

slide bar 19a slides and wears to locate in spout 23a and the sliding fit between sliding sleeve 20a and the slide bar 19a, play two-way spacing to sliding sleeve 20a, avoid sliding sleeve 20a to take place skew and rotation on the horizontal circumference face, through inserting dop 43 to draw-in groove 25a, be connected presser foot drive slider 26a and presser bar 24a, the dismouting is comparatively convenient, presser bar 24a bottom is connected with the presser foot, be equipped with the presser foot packing ring on the presser foot, the presser foot packing ring can effectually play the presser foot and cushion in the high-speed motion from top to bottom, inhale the effect of shaking.

As shown in fig. 8-10, the handpiece housing 35 includes a housing base 100 of an integrated structure, the housing base 100 includes a back plate 101, the lower end of the back plate 101 has an inclined bottom plate 102, one side of the back plate 101 and the inclined bottom plate 102 has a full side plate 103, the other side has a half side plate 104, a cantilever 105 is arranged above the half side plate 104, the cantilever 105 and the upper portion of the full side plate 103 are both connected with a guide rail base 106 arranged transversely, an opening 107 is formed between the cantilever 105 and the half side plate 104, the back plate 101, the inclined bottom plate 102, the full side plate 103, the half side plate 104, the cantilever 105 and the guide rail base 106 are connected into a whole, a spindle mounting hole 108 is arranged on the upper portion of the full side plate 103, and the spindle mounting hole 108 is opposite to the opening 107; the top of the half side plate 104 is provided with the protruded shaft seat 112, the shaft seat 112 is provided with a transmission shaft hole 114 which is through from front to back, and the shaft seat 112 is positioned in the middle of the top of the half side plate 104 and is connected with the half side plate 104 into a whole; a sealing side plate 115 is arranged at the opening 107, the sealing side plate 115 comprises at least one splicing side plate 116, a main shaft through hole 117 is formed in the sealing side plate 115, and the main shaft through hole 117 is overlapped with the central axis of the main shaft mounting hole 108; the sealing side plate 115 comprises a plurality of splicing side plates 116, wherein two splicing side plates 116 are respectively provided with a half hole 118, and the two half holes 118 are spliced to form the main shaft through hole 117; an installation notch 119 is formed in one side, close to the back plate 101, of the shaft seat 112, an abdicating notch 120 is formed in the other side of the shaft seat 112, and a sealing plate 121 is detachably fixed at the installation notch 119; the power reversing component 6a partially penetrates out of the abdicating notch 120 in work.

In this embodiment, the spindle mounting hole 108 and the opening 107 are convenient for the worker to mount and fix the driving member, the housing is of a semi-open type opening structure, after the machine head and the driving part are placed on the shell seat 100, the full side plate 103 and the half side plate 104 are fixedly connected with the shell seat 100, so that the disassembly and the assembly of workers are convenient, the difficulty of installation and maintenance is reduced, the maintenance cost caused by the damage of integrated parts is reduced, the maintenance cost is controlled, the maintenance and the detection of the internal structure are convenient, the shaft seat 112 is used for installing and fixing a transmission shaft, the transmission shaft can penetrate through the transmission shaft hole 114, the transmission shaft is positioned through the transmission shaft hole 114, the shaft hole 113 of the presser foot driving motor is used for penetrating through the rotation shaft of the presser foot driving motor, and the central axis of the shaft hole 113 of the presser foot driving motor is superposed with the central axis of the transmission shaft hole 114, so that the high efficiency and the precision of power transmission are ensured, and the purpose of coaxially transmitting power is achieved; the sealing side plate 115 is used for shielding the sealing cover opening 107, the main shaft through hole 117 is used for positioning and penetrating through the main shaft, and the main shaft through hole 117 is overlapped with the central axis of the main shaft mounting hole 108, so that the main shaft is ensured not to incline when being mounted and fixed, and the main shaft is ensured to be placed in a horizontal state;

the main shaft through hole 117 is formed by splicing two half holes 118 after being close to each other by two spliced side plates 116, adopts a symmetrical structure, is relatively accurate in alignment, and the installation notch 119 facilitates workers to install the fixed shaft seat 112, provides an operable space during disassembly and assembly, and the abdicating notch 120 plays an abdicating role, and can better and reasonably utilize the space.

As shown in fig. 11, the needle bar driving mechanism 130 includes a driving cam 132 fixed on a main shaft 131, a circular sleeve 133 is sleeved on the periphery of the driving cam 132, a handle 134 is disposed at the outer end of the circular sleeve 133, the handle 134 is hinged to the middle of a driving arm 135, the rear end of the driving arm 135 is rotatably connected to a cylinder 136 on a fixed handpiece housing 35, the front end of the driving arm is rotatably connected to one end of a small connecting rod 137, and the other end of the small connecting rod 137 is rotatably connected to the needle bar driver 31.

In this embodiment, when the needle bar driver 31 needs to be driven to axially reciprocate along the guide rod 30, the driving cam 132 is rotated to drive the circular sleeve 133 and the handle 134 to reciprocate, and drive the transmission arm 135 and the small link 137 to synchronously reciprocate, so as to drive the needle bar driver 31 to axially reciprocate.

Needle bar driver 31 and needle bar 5 between link to each other through separation and reunion structure 32, needle bar 5 axial activity wear to locate to set up at the anterior needle bar frame of aircraft nose casing 35 and be equipped with axial anti-disengaging structure 50 between the two, the cover is equipped with compression spring 51 on needle bar 5, compression spring 51 one end act on the needle bar frame, the other end acts on needle bar 5, and when separation and reunion structure 32 was in needle bar driver 31 and needle bar 5 separation state needle bar 5 thereby the lift of compression spring 51 make needle bar 5 be in position locking state.

In this embodiment, the presser foot driver 8 and the needle bar driver 31 can do reciprocating linear motion along the axial direction of the guide rod 30, the linkage type clutch control structure 33 can drive the clutch structure 32 to do circumferential rotation along the axial direction of the guide rod 30, and further complete the state switching of connection or disconnection between the needle bar driver 31 and the needle bar 5 through the rotation of the clutch structure 32, when the lock is required to be out of work, the needle bar 5 can be disconnected from the needle bar driver 31 through the linkage type clutch control structure 33, the needle bar 5 is not required to be dropped, the high-speed needle bar is prevented from impacting the presser foot, mechanical parts are prevented from being damaged, the needle bar 5 is reconnected and the needle bar 5 is allowed to drop again only by rotating the clutch structure 32 to the initial position, the needle bar 5 is driven to continuously drop through the needle bar driver 31, the axial anti-dropping structure 50 can prevent the needle bar 5 from being penetrated in the needle bar frame, and the needle bar 5 from axially dropping in the working process, the compression spring 51 is used for connecting the needle bar 5, and ensures that the needle bar 5 is lifted by the compression spring 51 when the clutch structure 32 is in a state that the needle bar driver 31 is separated from the needle bar 5, so that the needle bar 5 is in a position locking state, and the self-locking of the needle bar is completed.

The linkage type clutch control structure 33 comprises a transmission mechanism 34 arranged on one side of the guide rod 30, the power input end of the transmission mechanism 34 is connected with the presser foot driver 8 in a lifting state, and the power output end of the transmission mechanism 34 acts on the needle rod driver 31 to control the clutch structure 32; the transmission mechanism 34 comprises a transmission piece 36 with the middle part rotatably connected with the machine head shell 35, the transmission piece 36 is V-shaped, a supported part 37 is arranged at the lower end of the transmission piece 36, a pushing part 38 acting on the needle bar driver 31 is arranged at the upper end of the transmission piece 36, and a pushing part 39 lifting the supported part 37 when the presser foot driver 8 is in a lifting state is arranged on the presser foot driver 8; the pushing and lifting part 39 is arranged on the presser foot driver 8 and transversely extends, and the pushing and lifting part 39 and the presser foot driver 8 are connected into a whole; the supported part 37 is fixed at the lower end of the transmission piece 36 through a pin 40 extending transversely, and the supported part 37 extends forwards; the pushing and lifting part 39 is positioned above the supported part 37, and the vertical projections of the two parts are crossed; the pushing part 38 is cylindrical and extends transversely to the front side of the needle bar driver 31; the driving medium 36 set up on the aircraft nose casing 35 through pivot 41, the cover is equipped with return torsional spring 42 on pivot 41, return torsional spring 42 act on driving medium 36 and aircraft nose casing 35 respectively.

In this embodiment, when the presser foot driver 8 is lifted upwards, the pushing part 39 on the presser foot driver 8 abuts against the supported part 37 at the lower end of the transmission member 36 and drives the supported part 37 to rotate, the pushing part 38 is synchronously driven to rotate and drive the clutch structure 32 on the needle bar driver 31 to rotate circumferentially along the axial direction of the guide rod 30 during the rotation of the supported part 37, so as to complete the separation between the needle bar driver 31 and the needle bar 5, the transmission member 36 is V-shaped, so as to ensure that the pushing part 38 can rotate towards one end close to the needle bar driver 31 when the pushing part 39 is lifted upwards, the pushing part 39 is arranged on the presser foot driver 8 and extends transversely, the supported part 37 extends forwards, the pushing part 39 is arranged above the supported part 37 and the vertical projections of the two intersect with each other, and this arrangement ensures that the pushing part 39 always abuts against the supported part 37 during the lifting process and drives the supported part 37 to rotate, can drive in step in the rotation process of portion 37 by the support portion 38 to rotating near needle bar driver 31 one end, the portion 38 that pushes away is cylindric and transversely extends to needle bar driver 31 front side, can ensure that the portion 38 that pushes away is in the butt state with needle bar driver 31 all the time in the rotation process, driving medium 36 sets up on aircraft nose casing 35 through pivot 41, make driving medium 36 can rotate along 41 axle center directions of pivot, the cover is equipped with return torsional spring 42 on the pivot 41, after the portion 39 descends pushing away to rise, driving medium 36 can turn around to initial position automatically through return torsional spring 42's torsion effect, need not manual reset.

The needle bar driver 31 comprises a lifting slide seat 1 sleeved on a guide rod 30, the lifting slide seat 1 is provided with a driving clutch part 4 axially positioned and circumferentially and rotatably connected with the lifting slide seat, a clutch structure 32 capable of being separated from the needle bar 5 after the driving clutch part 4 circumferentially rotates is arranged between the driving clutch part 4 and the needle bar 5, a circumferentially rotating reset spring 7 capable of resetting the circumferentially rotated driving clutch part 4 so as to enable the needle bar driver 31 to be connected with the needle bar 5 again is arranged between the lifting slide seat 1 and the driving clutch part 4, the driving clutch part 4 is provided with a presser foot linkage part 9 axially extending along the driving clutch part 4, and the pushing part 38 is in sliding contact or rolling contact with the presser foot linkage part 9.

In this embodiment, the circumferential direction reset spring 7 can play a role of automatic reset when the initial state needs to be restored after the drive clutch member 4 rotates, the lifting slide seat 1 is used for fixing the drive clutch member 4, the lifting slide seat 1 can drive the drive clutch member 4 to axially reciprocate along the guide rod 30, when the lifting slide seat 1 axially moves, the clutch structure 32 is in a connection state with the needle rod 5, the drive clutch member 4 drives the needle rod 5 to fall down, when the lock does not work, the needle rod 5 can not be inserted into the needle, the push part 38 drives the presser foot linkage part 9 and the drive clutch member 4 to circumferentially rotate, so that the needle rod 5 is separated from the clutch structure 32, the lifting slide seat 1 and the drive clutch member 4 still linearly reciprocate along the axial direction, the needle rod 5 can not be inserted into the needle, the high-speed needle rod is prevented from impacting the presser foot, mechanical parts are damaged, and the locking of the needle rod driver is realized, the locking is simple and convenient, when the needle needs to fall, the clutch structure 32 is rotated to the initial position, so that the needle rod 5 is reconnected with the clutch structure 32, the needle rod can be continuously driven to fall, the separation and connection switching of the needle rod are simple and convenient, and the practicability is strong.

As shown in fig. 7, the presser foot linkage part 9 is columnar and is arranged at one side of the driving clutch member 4, and two ends of the presser foot linkage part 9 respectively exceed the end part of the driving clutch member 4; the other side of drive clutch 4 be equipped with motor promotion portion 13, the both ends of motor promotion portion 13 exceed the tip of drive clutch 4 respectively, be equipped with motor pushing mechanism 52 in the outside of motor promotion portion 13, motor pushing mechanism 52 including fixing at the motor 53 of aircraft nose casing 35, the output shaft of motor 53 on be fixed with swing arm 54, swing arm 54 outer end be fixed with push rod 55, push rod 55 and motor promotion portion 13 sliding contact or rolling contact.

In this embodiment, the presser foot linkage part 9 is columnar so as to be in butt fit with the pushing part 38, and two ends of the presser foot linkage part 9 respectively exceed the end parts of the driving clutch members 4, so as to ensure that the pushing part 38 keeps a linkage state with the linkage part 9 during swinging; two ends of the motor pushing part 13 respectively exceed the end parts of the driving clutch parts 4, so that the lock motor can always keep a linkage state with the motor pushing part 13;

when it is necessary to avoid driving the clutch member 4 to continue to rotate in the counterclockwise direction after the initial state is recovered, the motor 53 is started, and the rotating shaft of the motor 53 drives the swing arm 54 and the push rod 55 to rotate, so that the push rod 55 abuts against the motor pushing portion 38, and the continuous counterclockwise rotation of the motor pushing portion 38 is avoided, thereby achieving a limiting effect.

The pushing part 38 is positioned at the front side of the presser foot linkage part 9, and the push rod 55 is positioned at the rear side of the motor pushing part 13; a rotation limiting structure 10 is arranged between the lifting slide seat 1 and the driving clutch part 4, the limiting direction of the rotation limiting structure 10 is opposite to the circumferential rotation direction of the driving clutch part 4, the rotation limiting structure 10 comprises a limiting body 11 fixed on the lifting slide seat 1 and a limiting surface 12 arranged on the driving clutch part 4, the limiting body 11 and the limiting surface 12 are mutually abutted under the action of a circumferential rotation reset spring 7, and when the limiting body 11 and the limiting surface 12 are mutually abutted, the clutch structure 32 is in a state that the needle rod driver 31 is connected with the needle rod 5; the push rod 55 comprises a rod body 56 and a rolling body 57 rotatably connected to the outer end of the rod body 56, and the rolling body 57 is in contact with the motor pushing part 13; the driving clutch 4 is made of plastic; the circumferential rotation return spring 7 comprises a torsion spring, one foot of the torsion spring is connected with the lifting sliding seat 1, and the other foot of the torsion spring is connected with the driving clutch part 4; the clutch structure 32 comprises a bayonet 21 arranged on the driving clutch part 4 and a chuck 43 arranged on the needle rod 5, the bayonet 21 transversely extends, two ends of the bayonet are communicated, and the chuck 43 can be clamped into or separated from the bayonet 21 when the driving clutch part 4 rotates in the circumferential direction.

In this embodiment, when the clutch structure 32 rotates to a state where the needle rods 5 are connected, the limit surface 12 on the driving clutch member 4 is in abutting fit with the limit body 11, so that the driving clutch member 4 cannot rotate in a direction opposite to the circumferential rotation direction of the driving clutch member 4, the limit of the driving clutch member 4 is realized, and the clutch structure 32 and the needle rods 5 are in tight connection in a connected state; when the driving clutch 4 needs to be prevented from continuously rotating in the counterclockwise direction after the driving clutch 4 is restored to the initial state, the motor 53 is started, the swing arm 54, the rod body 56 and the rolling body 57 are driven to rotate through the rotating shaft of the motor 53, so that the rolling body 57 is abutted to the motor pushing part 38, the continuous counterclockwise rotation of the motor pushing part 38 is avoided, and a limiting effect is achieved; the torsion spring can drive the driving clutch part 4 which rotates in the circumferential direction to rotate to an initial position, the bayonet 21 is used for inserting the clamping head 43 on the fixed needle rod 5, the needle rod 5 is connected, and after the driving clutch part 4 rotates, the clamping head 43 on the needle rod 5 can be separated from the bayonet 21, and the separation of the needle rod is completed.

The utility model discloses a theory of operation is:

the presser foot driver 8 and the needle bar driver 31 can do reciprocating linear motion along the axial direction of the guide rod 30, the clutch structure 32 can be driven by the linkage type clutch control structure 33 to do circumferential rotation along the axial direction of the guide rod 30, further the connection or disconnection state switching between the needle bar driver 31 and the needle bar 5 is completed by the rotation of the clutch structure 32, when a lock is required to be out of work, the presser foot driver 8 is lifted upwards, the pushing part 39 on the presser foot driver 8 is abutted with the supported part 37 at the lower end of the transmission piece 36 and drives the supported part 37 to rotate, the pushing part 38 is synchronously driven to rotate in the rotation process of the supported part 37 and drives the clutch structure 32 on the needle bar driver 31 to do circumferential rotation along the axial direction of the guide rod 30, the disconnection between the needle bar driver 31 and the needle bar 5 is completed, the transmission piece 36 is V-shaped, and when the pushing part 39 is ensured to be lifted upwards, the pushing part 38 can rotate to one end close to the needle bar driver 31, the clamping head 43 on the needle bar 5 can be separated from the buckle 21 to complete the separation of the needle bar, the needle bar 5 is not inserted, the high-speed needle bar is prevented from impacting a presser foot to damage mechanical parts, the needle bar 5 is reconnected, the needle bar 5 falls again only by rotating the clutch structure 32 to the initial position, and the needle bar 5 is driven to fall continuously by the needle bar driver 31.

The torsion spring can drive the driving clutch part 4 which rotates in the circumferential direction to rotate to the initial position.

When the clutch structure 32 rotates to the state that the needle bar 5 is connected, the limit surface 12 on the drive clutch member 4 is in butt fit with the limit body 11, so that the drive clutch member 4 can not excessively rotate in the direction opposite to the circumferential rotation direction of the drive clutch member 4, the limit of the drive clutch member 4 is realized, and the clutch structure 32 is tightly connected with the needle bar 5 in the state that the needle bar 5 is connected.

When it is necessary to avoid driving clutch 4 to continue to rotate in the counterclockwise direction after returning to the initial state, motor 53 is started, and rotating shaft of motor 53 drives swing arm 54, rod body 56 and rolling element 57 to rotate, so that rolling element 57 abuts against motor pushing portion 38, and avoids continuing to rotate in the counterclockwise direction toward motor pushing portion 38, thereby achieving a limiting effect.

Meanwhile, the presser foot driving motor 2a is arranged outside the cavity of the machine head shell 35, so that the mounting head distance of the machine head shell is shortened, the mounting space is saved, the structure is compact, the distance between heads is reduced, and the embroidering efficiency of large-breadth embroidery is greatly improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the spirit of the invention.

Claims

1. An embroidery machine head comprises a head shell (35), a guide rod (30) is vertically and fixedly arranged at the front part of the head shell (35), a presser foot driver (8) and a needle rod driver (31) are axially and movably arranged on the guide rod (30) at intervals, the needle rod driver (31) is connected with a needle rod driving mechanism (130), the presser foot driver (8) is connected with a presser foot driving mechanism (60a), and the needle rod driver (31) is connected with a needle rod (5) through a clutch structure (32), the embroidery machine head is characterized in that a linkage type clutch control structure (33) which is powered by the presser foot driver (8) to control the clutch structure (32) to act is arranged between the presser foot driver (8) and the needle rod driver (31), and the linkage type clutch control structure (33) controls the clutch structure (32) to act when the presser foot driver (8) is in a lifting state and the needle rod driver (31) is in a lifting state, so that a needle can be driven by the clutch structure (32) to act The rod driver (31) and the needle rod (5) are mutually separated, and the clutch structure (32) is reset after the presser foot driver (8) descends so as to mutually connect the needle rod driver (31) and the needle rod (5).

2. The embroidery machine head as claimed in claim 1, characterized in that the presser foot drive mechanism (60a) is an independent drive mechanism provided on the head housing (35), and comprises a presser foot drive motor (2a) fixed outside the cavity of the head housing (35) and located at the back of the head housing (35), wherein a power shaft of the presser foot drive motor (2a) penetrates into the head housing (35) and is connected with a presser foot drive transmission structure (61a) for converting a rotary power into a vertical reciprocating power, and the presser foot drive transmission structure (61a) is connected with the presser foot driver (8).

3. The embroidery machine head as claimed in claim 2, characterized in that the presser foot drive motor (2a) is provided on a back side of the head housing (35); the guide rod (30) is arranged in the transverse middle of the front part of the machine head shell (35); the presser foot driving transmission structure (61a) penetrates through the cavity of the machine head shell (35) from the rear part of the machine head shell (35) to the transverse middle part of the front part of the machine head shell (35); the presser foot driving transmission structure (61a) comprises a rigid coupling component (5a) and a power reversing component (6a), one end of the rigid coupling component (5a) is connected with the presser foot driving motor (2a), the other end of the rigid coupling component is connected with the power reversing component (6a), and the power reversing component (6a) is connected with a presser foot driver (8); the side of the machine head shell (35) is provided with a shaft seat (112) which is integrally arranged with the machine head shell (35), and the power reversing component (6a) penetrates through the shaft seat (112).

4. The embroidery machine head according to claim 3, wherein the head housing (35) comprises a housing seat (100) of an integrated structure, the housing seat (100) comprises a back plate (101), an inclined bottom plate (102) is arranged at the lower end of the back plate (101), a full side plate (103) is arranged on one side of the back plate (101) and the inclined bottom plate (102), a half side plate (104) is arranged on the other side of the back plate (101), a cantilever (105) is arranged above the half side plate (104), the cantilever (105) and the upper part of the full side plate (103) are connected with a guide rail seat (106) which is transversely arranged, an opening (107) is formed between the cantilever (105) and the half side plate (104), the back plate (101), the inclined bottom plate (102), the full side plate (103), the half side plate (104), the cantilever (105) and the guide rail seat (106) are connected into a whole, a main shaft mounting hole (108) is arranged at the upper part of the full side plate (103), the main shaft mounting hole (108) is opposite to the opening (107); the top of the half side plate (104) is provided with the protruding shaft seat (112), the shaft seat (112) is provided with a transmission shaft hole (114) which is through from front to back, and the shaft seat (112) is positioned in the middle of the top of the half side plate (104) and is connected with the half side plate (104) into a whole; a sealing side plate (115) is arranged at the opening (107), the sealing side plate (115) comprises at least one splicing side plate (116), a main shaft through hole (117) is formed in the sealing side plate (115), and the main shaft through hole (117) is overlapped with the central axis of the main shaft mounting hole (108); the sealing side plates (115) comprise a plurality of splicing side plates (116), wherein the two splicing side plates (116) are respectively provided with a half hole (118), and the two half holes (118) are spliced to form the main shaft through hole (117); an installation notch (119) is formed in one side, close to the back plate (101), of the shaft seat (112), an abdicating notch (120) is formed in the other side of the shaft seat, and a sealing plate (121) is detachably fixed at the installation notch (119); the power reversing assembly (6a) penetrates out of the abdicating notch (120) when in work.

5. The embroidery machine head according to claim 1, 2, 3 or 4, characterized in that the needle bar driving mechanism (130) comprises a driving cam (132) fixed on a main shaft (131), a circular sleeve (133) is sleeved on the periphery of the driving cam (132), a handle part (134) is arranged at the outer end of the circular sleeve (133), the handle part (134) is hinged with the middle part of a transmission arm (135), the rear end of the transmission arm (135) is rotatably connected with a cylinder (136) on a fixed machine head shell (35), the front end of the transmission arm is rotatably connected with one end of a small connecting rod (137), and the other end of the small connecting rod (137) is rotatably connected with the needle bar driver (31).

6. The embroidery machine head according to claim 1 or 2 or 3 or 4, characterized in that the needle bar driver (31) is connected with the needle bar (5) through a clutch structure (32), the needle bar (5) is axially movably arranged on a needle bar frame arranged at the front part of the machine head shell (35) in a penetrating way, an axial anti-dropping structure (50) is arranged between the needle bar frame and the needle bar frame, a compression spring (51) is sleeved on the needle bar (5), one end of the compression spring (51) acts on the needle bar frame, the other end acts on the needle bar (5), and when the clutch structure (32) is in a state that the needle bar driver (31) is separated from the needle bar (5), the needle bar (5) is lifted by the compression spring (51) so as to enable the needle bar (5) to be in a position locking state.

7. The embroidery machine head as claimed in claim 6, characterized in that the linkage type clutch control structure (33) comprises a transmission mechanism (34) arranged at one side of the guide rod (30), a power input end of the transmission mechanism (34) is connected with the presser foot driver (8) in a lifting state, and a power output end of the transmission mechanism (34) acts on the needle rod driver (31) so as to control the clutch structure (32); the transmission mechanism (34) comprises a transmission piece (36) with the middle part rotatably connected to the machine head shell (35), the transmission piece (36) is V-shaped, a supported part (37) is arranged at the lower end of the transmission piece (36), a pushing part (38) acting on the needle rod driver (31) is arranged at the upper end of the transmission piece (36), and a pushing and lifting part (39) for lifting the supported part (37) when the presser foot driver (8) is in a lifting state is arranged on the presser foot driver (8); the pushing and lifting part (39) is arranged on the presser foot driver (8) and transversely extends, and the pushing and lifting part (39) and the presser foot driver (8) are connected into a whole; the supported part (37) is fixed at the lower end of the transmission piece (36) through a pin (40) extending transversely, and the supported part (37) extends forwards; the pushing and lifting part (39) is positioned above the supported part (37), and the vertical projections of the pushing and lifting part and the supported part are mutually crossed; the pushing part (38) is cylindrical and transversely extends to the front side of the needle bar driver (31); driving medium (36) set up on aircraft nose casing (35) through pivot (41), the cover is equipped with return torsional spring (42) on pivot (41), return torsional spring (42) act on driving medium (36) and aircraft nose casing (35) respectively.

8. The embroidery machine head according to claim 7, characterized in that the needle bar driver (31) comprises a lifting slide (1) sleeved on the guide rod (30), the lifting slide (1) and a driving clutch member (4) axially positioned and circumferentially and rotatably connected with the lifting slide, a clutch structure (32) capable of separating from the needle bar (5) after the driving clutch member (4) circumferentially rotates is arranged between the driving clutch member (4) and the needle bar (5), a circumferentially rotating reset spring (7) capable of resetting the circumferentially rotated driving clutch member (4) so as to enable the needle bar driver (31) to be connected with the needle bar (5) again is arranged between the lifting slide (1) and the driving clutch member (4), a presser foot linkage part (9) axially extending along the driving clutch member (4) is arranged on the driving clutch member (4), the pushing part (38) is in sliding contact or rolling contact with the presser foot linkage part (9).

9. The embroidery machine head according to claim 8, characterized in that the presser foot linkage part (9) is columnar and is arranged at one side of the driving clutch piece (4), and two ends of the presser foot linkage part (9) respectively exceed the end part of the driving clutch piece (4); the opposite side of drive clutch (4) be equipped with motor promotion portion (13), the both ends of motor promotion portion (13) surpass the tip of drive clutch (4) respectively, be equipped with motor pushing mechanism (52) in the outside of motor promotion portion (13), motor pushing mechanism (52) including fixing motor (53) at aircraft nose casing (35), the output shaft of motor (53) on be fixed with swing arm (54), swing arm (54) outer end be fixed with push rod (55), push rod (55) and motor promotion portion (13) sliding contact or rolling contact.

10. The embroidery machine head as claimed in claim 9, characterized in that the pushing portion (38) is located at a front side of the presser foot interlocking portion (9), and the push rod (55) is located at a rear side of the motor pushing portion (13); a rotation limiting structure (10) is arranged between the lifting sliding seat (1) and the driving clutch piece (4), the limiting direction of the rotation limiting structure (10) is opposite to the circumferential rotation direction of the driving clutch piece (4), the rotation limiting structure (10) comprises a limiting body (11) fixed on the lifting sliding seat (1) and a limiting surface (12) arranged on the driving clutch piece (4), the limiting body (11) and the limiting surface (12) are mutually abutted under the action of a circumferential rotation reset spring (7), and when the limiting body (11) and the limiting surface (12) are mutually abutted, the clutch structure (32) is in a state that a needle rod driver (31) is connected with a needle rod (5); the push rod (55) comprises a rod body (56) and a rolling body (57) rotatably connected to the outer end of the rod body (56), and the rolling body (57) is in contact with the motor pushing part (13); the driving clutch piece (4) is made of plastic; the circumferential rotation return spring (7) comprises a torsion spring, one foot of the torsion spring is connected with the lifting sliding seat (1), and the other foot of the torsion spring is connected with the driving clutch piece (4); clutch structure (32) including setting up bayonet socket (21) on drive clutch spare (4) and dop (43) of setting on needle bar (5), bayonet socket (21) transversely extend and both ends link up, when drive clutch spare (4) circumferential direction dop (43) can block in or break away from bayonet socket (21).