CN215051226U

CN215051226U - Needle bar driver

Info

Publication number: CN215051226U
Application number: CN202022301333.1U
Authority: CN
Inventors: 王亮; 曹万里; 李春鹏; 王磊
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: 2021-12-07
Anticipated expiration: 2030-10-15

Abstract

The utility model belongs to the technical field of the embroidery machine, especially, relate to a needle bar driver. The utility model discloses, including the lift slide, be equipped with the lift slide that needle bar lift power connection structure and axial link up on the lift slide, the lift slide on be equipped with rather than axial positioning and circumference rotatable coupling's drive separation and reunion piece, the drive separation and reunion piece on be equipped with the needle bar separation and reunion structure that can separate with the needle bar after drive separation and reunion piece circumferential direction. The utility model discloses a set up the lift slide, drive separation and reunion piece and needle bar separation and reunion structure, when lift slide axial motion, needle bar separation and reunion structure can be connected with the needle bar and drive the needle bar and carry out the whereabouts, when the tapered end is out of work as needs, through rotating drive separation and reunion piece, make needle bar and needle bar separation and reunion structure break away from, the needle bar is no longer lower, avoid high-speed needle bar striking presser foot, damage machine part, realize the locking of needle bar driver, the locking is simple and convenient, the breaking away from and connection switching of needle bar is simple and convenient, the practicality is stronger.

Description

Needle bar driver

Technical Field

The utility model belongs to the technical field of the embroidery machine, a needle bar driver is related to.

Background

In the computerized embroidery machine, the needle bar driver is an important component and plays an important driving role in the embroidery process. The needle bar of the existing needle bar mechanism generally moves synchronously along with a needle bar driver, when the presser foot is at the highest point, if a lock motor fails, the needle bar can fall down, and the condition that the needle bar impacts the presser foot and damages other mechanical parts is easily caused. Therefore, the existing needle bar driver is not reasonable in design and is easy to break down.

In order to overcome the defects of the prior art, people continuously explore and propose various solutions, for example, a chinese patent discloses a novel needle bar driver of a computerized embroidery machine [ application number: CN201320894997.0 ]. It has solved the easy wearing and tearing scheduling problem of current computerized embroidery machine needle bar driver. Including the driver support body, the driver support body on be equipped with the drive sliding sleeve that is the tube-shape, the cover is equipped with the driving block just on the drive sliding sleeve and driving block between be equipped with the axle sleeve, its characterized in that, drive sliding sleeve tip be equipped with annular step, annular step on be equipped with the oil filler point, the inner wall of drive sliding sleeve be equipped with the oil storage tank that is linked together with the oil filler point, annular step and driving block between be equipped with the torsional spring that the cover was located on the drive sliding sleeve. Compared with the prior art, the novel needle bar driver of the computerized embroidery machine has the advantages that: simple structure is reasonable, and stability is strong, and difficult wearing and tearing can realize tapered end and jump needle through mechanical system, light in weight, small in noise, long service life.

However, the needle bar driver of the scheme still works independently of the presser foot, a lock motor needs to be configured, the connection with the presser foot cannot be established, and when the lock presser foot is at the highest point, the situation that the high-speed needle bar impacts the presser foot and damages other mechanical parts is easily caused.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a needle bar driver.

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

the utility model provides a needle bar driver, includes the lift slide, is equipped with the lift slide that needle bar lift power connection structure and axial link up on the lift slide, the lift slide on be equipped with rather than axial positioning and circumference rotatable coupling's drive separation and reunion spare, drive separation and reunion spare on be equipped with the needle bar separation and reunion structure that can separate with the needle bar after drive separation and reunion spare circumferential direction, lift slide and drive separation and reunion spare between be equipped with thereby the circumferential direction reset spring that can make the drive separation and reunion spare after the circumferential direction reset with the needle bar again continuous, the drive separation and reunion spare on be equipped with along drive separation and reunion spare axial extension and can push drive separation and reunion spare circumferential direction's linkage portion under the exogenic action that the presser foot driver provided.

In the needle bar driver, the external force is from the presser foot driver in a lifting state, the length of the linkage part is not less than the stroke of the lifting slide seat, and the linkage part is in a linkage state with the presser foot driver when the presser foot driver is at a stroke high point and the lifting slide seat is at the stroke high point.

In the needle bar driver, the linkage part is columnar and is arranged at one side of the driving clutch piece, and two ends of the linkage part respectively exceed the end part of the driving clutch piece.

In the needle bar driver, a rotation limiting structure is arranged between the lifting slide seat and the driving clutch piece, and the limiting direction of the rotation limiting structure is opposite to the circumferential rotation direction of the driving clutch piece.

In the needle bar driver, the rotation limiting structure comprises a limiting body fixed on the lifting sliding 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 the circumferential rotation reset spring, and the needle bar clutch structure is in a state of being connected with the needle bar when the limiting body and the limiting surface are mutually abutted.

In the needle bar driver, the driving clutch piece is further provided with a lock head motor pushing part, the lock head motor pushing part is columnar and is arranged on the other side of the driving clutch piece, and two ends of the lock head motor pushing part respectively exceed the end parts of the driving clutch piece.

In the above needle bar drive, the drive clutch member is made of plastic.

In the needle bar driver, the lifting slide seat comprises a U-shaped seat and a barrel-shaped body with a lifting slide way, the two arms of the U-shaped seat are respectively provided with a positioning hole, and the two ends of the barrel-shaped body are respectively fixedly connected with the two arms of the U-shaped seat and the central axes of the lifting slide way and the two positioning holes coincide.

In the needle bar driver, the circumferential direction reset spring comprises a torsion spring, a torsion spring seat is fixed between one end of the cylindrical body and the arm of the U-shaped seat, an annular groove is formed in the torsion spring seat, the torsion spring sleeve is arranged in the annular groove, a foot of the torsion spring is connected with a notch in the torsion spring seat, and the other end of the torsion spring is connected with the driving clutch piece.

In the needle bar driver, the needle bar lifting power connecting structure comprises a swing arm shaft arranged on a lifting sliding seat; the needle bar clutch structure comprises a bayonet arranged on the driving clutch piece, the bayonet transversely extends, and two ends of the bayonet are communicated.

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

1. the utility model discloses a set up the lift slide, drive separation and reunion piece and needle bar separation and reunion structure, when lift slide axial motion, needle bar separation and reunion structure can be connected with the needle bar and drive the needle bar and go up and down, when the needle bar does not fall when needs, rotate drive separation and reunion piece through the power that comes from the presser foot, make needle bar and needle bar separation and reunion structure break away from, the needle bar is no longer lower needle, avoid high-speed needle bar striking presser foot, damage machine part, realize the locking of needle bar driver, the locking is simple and convenient, the breaking away from and the connection switching of needle bar are simple and convenient, the practicality is stronger.

2. 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 needle bar separation and reunion structure and needle bar realize zonulae occludens under the continuous state.

3. The utility model discloses be equipped with tapered end motor promotion portion, the tapered end motor realizes electronic separation and reunion control to the drive clutch spare, uses the presser foot driver to realize mechanical control to the drive clutch spare as power in addition to further improve control stability and use flexibility.

4. The utility model discloses a set up the torsional spring, can drive the rotation of drive clutch spare to initial position, accomplish automatic re-setting after drive clutch spare circumferential direction through the torsion effect of torsional spring.

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 structural view in another direction of the present invention.

FIG. 3 is a schematic view of the drive clutch configuration.

Fig. 4 is an exploded view of the drive clutch.

Fig. 5 is a structural schematic diagram of a needle bar lifting power connecting structure.

In the figure: the needle bar lifting mechanism comprises a lifting slide seat 1, a needle bar lifting power connecting structure 2, a lifting slide way 3, a driving clutch part 4, a needle bar 5, a needle bar clutch structure 6, a circumferential rotation reset spring 7, a presser foot driver 8, a linkage part 9, a rotation limiting structure 10, a limiting body 11, a limiting surface 12, a lock head motor pushing part 13, a U-shaped seat 14, a barrel-shaped body 15, a positioning hole 16, a torsion spring seat 17, an annular groove 18, a notch 19, a swing arm shaft 20, a bayonet 21, a swing arm abutting part 22, a transmission shaft 23 and a needle bar connecting pin 24.

Detailed Description

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

As shown in fig. 1-5, a needle bar driver comprises a lifting slide base 1, a needle bar lifting power connection structure 2 and an axially through lifting slide way 3 are arranged on the lifting slide base 1, the lifting slide base 1 is provided with a driving clutch member 4 which is axially positioned and circumferentially and rotatably connected with the lifting slide base, the driving clutch member 4 is provided with a needle bar clutch structure 6 which can be separated from a needle bar 5 after the driving clutch member 4 rotates circumferentially, a circumferential rotation reset spring 7 which can reset the driving clutch member 4 after circumferential rotation so as to be connected with the needle bar 5 again is arranged between the lifting slide base 1 and the driving clutch member 4, and the driving clutch member 4 is provided with a linkage part 9 which extends axially along the driving clutch member 4 and can push the driving clutch member 4 to rotate circumferentially under the external force provided by a presser foot driver 8.

In this embodiment, the needle rod lifting power connection structure 2 can drive the lifting slide base 1 to move, the lifting slide base 1 can drive the driving clutch member 4 to reciprocate axially along the transmission shaft 23, when the lifting slide base 1 moves axially, the needle rod clutch structure 6 and the needle rod 5 are in a connection state, the driving clutch member 4 drives the needle rod 5 to fall down, when the lock is required to be out of work, the needle rod 5 is separated from the needle rod clutch structure 6 by lifting the presser foot driver 8, abutting and matching with the swing arm abutting member 22 and driving the swing arm abutting member 22 to swing, through the abutting effect between the swing arm abutting member 22 and the linkage portion 9, the linkage portion 9 and the driving clutch member 4 are driven to rotate circumferentially, the lifting slide base 1 and the driving clutch member 4 still move linearly and reciprocate axially, the needle rod 5 is not dropped, the high-speed needle rod is prevented from striking the presser foot, the mechanical part is prevented from being damaged, and the locking of the needle rod driver is realized, the locking is simple and convenient, when the needle needs to fall, the needle rod clutch structure 6 is rotated to the initial position, so that the needle rod 5 is reconnected with the needle rod clutch structure 6, the needle rod can be continuously driven to fall, the separation and connection of the needle rod are switched simply and conveniently, and the practicability is high.

As shown in fig. 1 and 2, the external force is from the presser foot driver 8 in a lifted state, the length of the linkage part 9 is not less than the stroke of the lifting slide 1, and the linkage part 9 is in a linkage state with the presser foot driver 8 when the presser foot driver 8 is at a stroke high point and the lifting slide 1 is at the stroke high point.

In this embodiment, the length of the linkage portion 9 is not less than the stroke of the lifting slide base 1, so as to ensure that when the lifting slide base 1 reciprocates axially, the linkage portion 9 is always driven by the presser foot driver 8 and drives the linkage portion 9 and the driving clutch member 4 to rotate, and when the presser foot driver 8 is at the stroke high point and the lifting slide base 1 is at the stroke high point, the linkage portion 9 is in a linkage state with the presser foot driver 8, and at this time, the needle rod can be separated from or connected to perform state switching.

As shown in fig. 2 and 3, the linkage portion 9 is columnar and disposed on one side of the driving clutch member 4, and two ends of the linkage portion 9 respectively exceed the end portions of the driving clutch member 4.

In this embodiment, the linkage portion 9 is columnar, so as to be convenient for abutting and matching with the swing arm abutting piece 22, and two ends of the linkage portion 9 respectively exceed the end portions of the driving clutch piece 4, so as to ensure that the swing arm abutting piece 22 keeps a linkage state with the linkage portion 9 during swinging.

As shown in fig. 3 and 4, a rotation limiting structure 10 is arranged between the lifting slide 1 and the driving clutch 4, and a limiting direction of the rotation limiting structure 10 is opposite to a circumferential rotation direction of the driving clutch 4.

In this embodiment, the rotation limiting structure 10 can limit the circumferential rotation of the driving clutch member 4, so as to prevent the driving clutch member 4 from excessively rotating in the direction opposite to the circumferential rotation direction of the driving clutch member 4, and ensure that the needle rod clutch structure 6 and the needle rod 5 are tightly connected in a connected state.

As shown in fig. 3 and 4, the rotation limiting structure 10 includes a limiting body 11 fixed on the lifting slide 1 and a limiting surface 12 disposed on the driving clutch member 4, the limiting body 11 and the limiting surface 12 abut against each other under the action of the circumferential rotation return spring 7, and the needle bar clutch structure 6 is in a state of being connected with the needle bar 5 when the limiting body 11 and the limiting surface 12 abut against each other.

In this embodiment, when the needle bar clutch structure 6 rotates to the state where the needle bars 5 are connected, the limiting surface 12 on the driving clutch member 4 is in abutting fit with the limiting body 11, so that the driving clutch member 4 can not rotate in the direction opposite to the circumferential direction of the driving clutch member 4, the driving clutch member 4 is limited, and the needle bar clutch structure 6 and the needle bars 5 are tightly connected in the state where they are connected.

As shown in fig. 1-4, the driving clutch member 4 is further provided with a locking head motor pushing portion 13, the locking head motor pushing portion 13 is columnar and is disposed on the other side of the driving clutch member 4, two ends of the locking head motor pushing portion 13 respectively exceed the end portions of the driving clutch member 4, and the driving clutch member 4 is made of plastic.

In this embodiment, tapered end motor accessible promotes tapered end motor promotion portion 13 and drives drive clutch 4 along circumferential direction, and drive clutch 4 is made by plastics, reduces the impact sound that produces when promoting the butt, noise abatement and cost of maintenance. Through tapered end motor promotion portion 13, the tapered end motor realizes electronic separation and reunion control to drive clutch spare, uses the presser foot driver to realize mechanical control as power to drive clutch spare in addition to further improve control stability and use flexibility.

As shown in fig. 4, the lifting slide 1 includes a U-shaped seat 14 and a tubular body 15 having a lifting slide 3, two arms of the U-shaped seat 14 are respectively provided with a positioning hole 16, two ends of the tubular body 15 are respectively fixedly connected with the two arms of the U-shaped seat 14, and central axes of the lifting slide 3 and the two positioning holes 16 coincide.

In this embodiment, the transmission shaft 23 penetrates through the lifting slide rail 3 and the positioning holes 16 of the tubular body 15, so that the lifting slide base 1 can perform axial reciprocating motion along the transmission shaft 23, two ends of the tubular body 15 are fixedly connected with two arms of the U-shaped seat 14 respectively, the central axes of the lifting slide rail 3 and the two positioning holes 16 coincide, and the axial motion trajectories coincide.

As shown in fig. 4 and 5, the circumferential return spring 7 includes a torsion spring, a torsion spring seat 17 is fixed between one end of the tubular body 15 and the arm of the U-shaped seat 14, an annular groove 18 is formed on the torsion spring seat 17, the torsion spring is sleeved in the annular groove 18, one leg of the torsion spring is connected with a notch 19 on the torsion spring seat 17, and the other end of the torsion spring is connected with the driving clutch member 4.

In this embodiment, the torsion spring seat 17 is used to fixedly mount a torsion spring, the annular groove 18 is convenient for placing and sleeving the torsion spring, and the torsion spring can drive the driving clutch member 4 to rotate to an initial position under the torque action of the torsion spring after the driving clutch member 4 rotates, so as to complete automatic reset.

As shown in fig. 1, 2 and 5, the needle bar lifting power connection structure 2 includes a swing arm shaft 20 disposed on the lifting slide 1; the needle bar clutch structure 6 comprises a bayonet 21 arranged on the driving clutch part 4, and the bayonet 21 transversely extends and two ends of the bayonet are communicated.

In this embodiment, the swing arm shaft 20 can drive the lifting slide carriage 1 to perform a reciprocating linear motion along the axial direction of the transmission shaft 23, and the bayonet 21 is used for inserting the needle bar 5 and can be conveniently buckled with or separated from the needle bar connecting pin 24 on the needle bar 5.

The utility model discloses a theory of operation is:

the needle bar lifting power connecting structure 2 can drive the lifting slide seat 1 to move, the lifting slide seat 1 can drive the driving clutch part 4 to reciprocate axially along the transmission shaft 23, when the lifting slide seat 1 moves axially, a bayonet 21 on the needle bar clutch structure 6 and a needle bar connecting pin 24 of the needle bar 5 are in a connecting state, the driving clutch part 4 drives the needle bar 5 to fall down, when a lock head is required to be out of work, the needle bar 5 is separated from the needle bar clutch structure 6 by lifting the presser foot driver 8, abutting and matching with the swing arm abutting part 22 and driving the swing arm abutting part 22 to swing, through the abutting effect between the swing arm abutting part 22 and the linkage part 9, driving the linkage part 9 and the driving clutch part 4 to rotate circumferentially, the lifting slide seat 1 and the driving clutch part 4 still do reciprocating linear motion along the axial direction, the needle bar 5 does not drop a needle, and the high-speed needle bar is prevented from impacting the presser foot, damage mechanical parts, realize the locking of needle bar driver, the locking is simple and convenient, when the needle falls to needs, rotates needle bar separation and reunion structure 6 to initial position for

needle bar

5 and 6 reconnection of needle bar separation and reunion structure can continue to drive the needle bar whereabouts, and the breaking away from of needle bar is switched simple and convenient with connecting, and the practicality is stronger.

When the needle rod clutch structure 6 rotates to the state that the needle rods 5 are connected, the limiting surface 12 on the drive clutch part 4 is in butt fit with the limiting body 11, so that the drive clutch part 4 can not rotate to the direction opposite to the circumferential rotation direction of the drive clutch part 4 any more, the limit of the drive clutch part 4 is realized, and the needle rod clutch structure 6 is in tight connection with the needle rods 5 in the state that the needle rods 5 are connected.

The torsion spring seat 17 is used for fixedly mounting a torsion spring, the annular groove 18 is convenient for placing and sleeving the torsion spring, and the torsion spring can drive the driving clutch part 4 to rotate to an initial position under the torsion action of the torsion spring after the driving clutch part 4 rotates, so that automatic reset is completed.

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.

Although the terms of the lifting slide 1, the needle bar lifting power connecting structure 2, the lifting slideway 3, the driving clutch member 4, the needle bar 5, the needle bar clutch structure 6, the circumferential rotation return spring 7, the presser foot driver 8, the linkage part 9, the rotation limiting structure 10, the limiting body 11, the limiting surface 12, the lock motor pushing part 13, the U-shaped seat 14, the barrel-shaped body 15, the positioning hole 16, the torsion spring seat 17, the annular groove 18, the notch 19, the swing arm shaft 20, the bayonet 21, the swing arm abutting part 22, the transmission shaft 23, the needle bar connecting pin 24, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. A needle bar driver comprises a lifting slide seat (1), a needle bar lifting power connecting structure (2) and a lifting slide way (3) which is axially communicated are arranged on the lifting slide seat (1), the lifting slide seat (1) is provided with a driving clutch piece (4) which is axially positioned and circumferentially and rotatably connected with the lifting slide seat, the drive clutch piece (4) is provided with a needle rod clutch structure (6) which can be separated from the needle rod (5) after the drive clutch piece (4) rotates in the circumferential direction, a circumferential rotation reset spring (7) which can reset the driving clutch piece (4) after circumferential rotation so as to be connected with the needle rod (5) again is arranged between the lifting slide seat (1) and the driving clutch piece (4), the device is characterized in that the driving clutch piece (4) is provided with a linkage part (9) which extends along the axial direction of the driving clutch piece (4) and can push the driving clutch piece (4) to rotate in the circumferential direction under the action of external force provided by the presser foot driver (8).

2. A needle bar drive as defined in claim 1, wherein the external force is from the presser foot drive (8) in a raised state, the length of the interlocking portion (9) is not less than the stroke of the lifting slide (1), and the interlocking portion (9) is in an interlocking state with the presser foot drive (8) when the presser foot drive (8) is at the stroke high point and the lifting slide (1) is at the stroke high point.

3. A needle bar drive as claimed in claim 1 or 2, wherein the linkage part (9) is cylindrical and is arranged on one side of the drive clutch member (4), and both ends of the linkage part (9) respectively extend beyond the end of the drive clutch member (4).

4. A needle bar drive as claimed in claim 1 or 2, characterized in that a rotation limiting structure (10) is provided between the lifting slide (1) and the drive clutch member (4), the limiting direction of the rotation limiting structure (10) being opposite to the circumferential direction of the drive clutch member (4).

5. The needle bar drive according to claim 4, characterized in that the rotation limiting structure (10) comprises a limiting body (11) fixed on the lifting slide carriage (1) and a limiting surface (12) arranged on the drive clutch member (4), the limiting body (11) and the limiting surface (12) are abutted against each other under the action of the circumferential rotation return spring (7), and the needle bar clutch structure (6) is in a state of being connected with the needle bar (5) when the limiting body (11) and the limiting surface (12) are abutted against each other.

6. A needle bar driver as claimed in claim 3, wherein the driving clutch member (4) is further provided with a locking head motor pushing portion (13), the locking head motor pushing portion (13) is columnar and is arranged on the other side of the driving clutch member (4), and two ends of the locking head motor pushing portion (13) respectively exceed the end portions of the driving clutch member (4).

7. A needle bar drive as claimed in claim 1 or 2, characterized in that the drive clutch member (4) is made of plastic.

8. A needle bar drive as claimed in claim 1 or 2, characterized in that the lifting carriage (1) comprises a U-shaped seat (14) and a cylinder (15) having a lifting slide (3), wherein two arms of the U-shaped seat (14) are respectively provided with a positioning hole (16), two ends of the cylinder (15) are respectively fixedly connected with the two arms of the U-shaped seat (14), and the central axes of the lifting slide (3) and the two positioning holes (16) coincide.

9. A needle bar driver as claimed in claim 8, wherein the circumferential return spring (7) comprises a torsion spring, a torsion spring seat (17) is fixed between one end of the cylindrical body (15) and the arm of the U-shaped seat (14), an annular groove (18) is formed in the torsion spring seat (17), the torsion spring is sleeved in the annular groove (18), one leg of the torsion spring is connected with a notch (19) in the torsion spring seat (17), and the other end of the torsion spring is connected with the driving clutch member (4).

10. Needle bar drive as in claim 8, characterized in that the needle bar lifting power connection (2) comprises a swing arm shaft (20) arranged on the lifting carriage (1); the needle rod clutch structure (6) comprises a bayonet (21) arranged on the driving clutch piece (4), and the bayonet (21) transversely extends and two ends of the bayonet are communicated.