CN214782553U

CN214782553U - Link device for high-speed sewing machine

Info

Publication number: CN214782553U
Application number: CN202120848791.9U
Authority: CN
Inventors: 陈家利
Original assignee: Qiuba Technology Ningbo Co ltd
Current assignee: Qiuba Technology Ningbo Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-19
Anticipated expiration: 2031-04-23

Abstract

The embodiment of the utility model discloses a link means for high rotational speed sewing machine, link means includes: the swing arm assembly is provided with at least one shifting piece. Link assembly locates including sleeve, cover telescopic rotation piece and cover are located the double-end connecting rod of rotation piece and alternate connect in telescopic connecting piece, the connecting piece connect in the plectrum. The outer peripheral wall of the sleeve is configured to be a conical surface, and the conical surface is tightly connected to the inner ring of the rotating part. The surface of the sleeve matched with the rotating part is set to be a conical surface, so that the sleeve and the rotating part are matched tightly and are always in a tight fit structure, and the running stability and the matching clearance are always in an optimal state. The swing arm component is connected with the connecting rod component through the shifting piece so as to achieve a linkage effect, achieve different power transmission and be convenient to connect.

Description

Link device for high-speed sewing machine

Technical Field

The utility model belongs to the technical field of high-speed sewing machine technique and specifically relates to a link means for high rotational speed sewing machine is related to.

Background

The high-speed sewing machine uses one or more sewing threads to form a specific track on cloth, has higher efficiency and better sewing effect compared with the traditional manual sewing, mainly aims at the objects such as cotton, hemp, wool, artificial fiber or leather, and can realize transmission by using a crank-link mechanism when the sewing machine works so as to perform sewing work.

However, the sleeve in the existing link device adopts a cylindrical peripheral wall structure, and along with the long-time operation of the sewing machine, the sleeve is worn and causes the fit clearance between each accessory in the link device to be too large, which causes the noise to be increased, the processing precision to be poor, the system stability to be poor, and the fault to be easily caused, so that the improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the embodiment of the utility model provides a link means for high rotational speed sewing machine.

The utility model provides a link means for high rotational speed sewing machine, include:

the swing arm assembly is provided with at least one shifting piece;

link assembly, locate including sleeve, cover telescopic rotation piece and cover are located the double-end connecting rod of rotating the piece and alternate connect in telescopic connecting piece, the connecting piece connect in the plectrum, telescopic periphery wall configuration is the conical surface, the conical surface support tightly connect in the inner circle of rotating the piece.

In one embodiment, the taper of the sleeve is set to be 1-5 degrees.

In one embodiment, the large end of the conical surface is located at the end of the sleeve, which faces away from the pick.

In an embodiment, the double-end connecting rod comprises a rod body, a first rotating portion and a second rotating portion, the first rotating portion and the second rotating portion are arranged at two ends of the rod body, the first rotating portion comprises a through mounting hole, and the rotating portion is mounted in the first rotating portion and located in the mounting hole.

In an embodiment, the double-end connecting rod further comprises an avoiding portion arranged on the peripheral wall of the first rotating portion, and the avoiding portion faces one side of the swing arm assembly.

In one embodiment, an elastic member is disposed between the sleeve and the connecting member.

In one embodiment, the coupling member includes a locking member and a nut member threadably coupled to the locking member, the locking member passing through the sleeve and the paddle and being lockingly coupled to the nut member defined by the paddle.

In one embodiment, the nut member is provided with a limiting surface, the nut member is inserted into the shifting piece, and the limiting surface and the nut member are mutually limited.

In an embodiment, the swing arm assembly comprises a connecting shaft, a swing arm main body which is rotatably connected with the connecting shaft and a connecting part which is arranged on the side wall of the swing arm main body, the free end of the connecting part and the central line of the swing arm main body are eccentrically arranged, the shifting piece protrudes from the radial direction of the swing arm main body, a long hole is formed in the shifting piece, and the rotating piece is connected with the long hole.

In one embodiment, the swing arm assembly further comprises a fitting and a fastener lockingly connected to the fitting, the connecting shaft passes through the swing arm main body and is connected to the fitting, and a center line of the fastener is perpendicular to a center line of the connecting shaft.

The embodiment of the utility model provides a technical scheme well sleeve and rotation complex surface set up to the conical surface to make sleeve and rotation between the piece cooperation closely, be in closely laminated structure all the time, the stable fit clearance of operation is in the optimum all the time. The swing arm component is connected with the connecting rod component through the shifting piece so as to achieve a linkage effect, achieve different power transmission and be convenient to connect.

Drawings

Fig. 1 is a perspective view of the middle link device of the present invention.

Fig. 2 is an exploded schematic view of the middle link device of the present invention.

Fig. 3 is a schematic view of the cross-sectional enlarged structure of the connecting portion of the connecting rod assembly and the shifting piece of the present invention.

Fig. 4 is a schematic sectional view of the sleeve of the present invention.

Fig. 5 is a schematic structural view of the swing arm main body of the present invention.

In the figure: a connecting-rod assembly 10; a double-ended connecting rod 11; a mounting hole 111; a first rotating section 112; a rod body 113; a second rotating portion 114; a rotor 12; a sleeve 13; a tapered surface 131; a connecting member 14; a nut member 15; a stopper surface 151; a swing arm assembly 20; a paddle 21; a long hole 211; a swing arm main body 22; a connecting portion 221; a connecting shaft 23; a fitting 24; and a fastener 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the following embodiments may be combined without conflict.

See fig. 1, 2 and 3: the utility model discloses a link means for high rotational speed sewing machine, this link means are used for transmission swing power, realize swing linkage function. Wherein, the link device comprises a swing arm assembly 20 and a connecting rod assembly 10, the swing arm assembly 20 is provided with a shifting piece 21, and the connecting rod assembly 10 is connected to the shifting piece 21, so that the connecting rod assembly 10 swings along with the swinging of the shifting piece 21. The swing arm assembly 20 is connected with the connecting rod assembly 10 through the shifting piece 21 so as to achieve a linkage effect, achieve different power transmission and be convenient to connect.

The connecting rod assembly 10 includes a sleeve 13, a rotating member 12 sleeved on the sleeve 13, a double-headed connecting rod 11 sleeved on the rotating member 12, and a connecting member 14 inserted into the sleeve 13, wherein the connecting member 14 is connected to the pick 21. The connecting member 14 functions as a rotating shaft, and the sleeve 13 is sleeved on the connecting member 14, so that the sleeve 13 is connected to the pick 21 through the connecting member 14. The rotation member 12 is located between the double-ended link 11 and the sleeve 13 to improve the flexibility of rotation of the double-ended link 11. Optionally, the rotor 12 is configured as a ball bearing to reduce the radial mounting size of the rotor 12, reducing the overall size of the linkage assembly 10.

The outer peripheral wall of the sleeve 13 is configured as a tapered surface 131, and the tapered surface 131 is connected to the inner ring of the rotor 12 in a tight contact manner. The surface of the sleeve 13 matched with the rotating part 12 is set to be a conical surface 131, so that the sleeve 13 and the rotating part 12 are matched tightly and are always in a tight fit structure, and the running stable fit clearance is always in an optimal state. Furthermore, an elastic part is arranged between the sleeve 13 and the connecting part 14, the sleeve 13 always keeps the outer peripheral wall of the sleeve 13 and the inner ring of the rotating part 12 attached to each other under the action of the elastic force of the elastic part, the combination tightness is high, automatic balance can be realized, and the structural stability is good.

As shown in fig. 3 and 4, the taper size of the sleeve 13 needs to be adapted to the general bearing type parts, and optionally, the taper of the sleeve 13 is set to 1-5 degrees, so as to realize the rotation fit size between the sleeve 13 and the rotating member 12. Specifically, the taper of the sleeve 13 is set to 1 degree, 2 degrees, 3 degrees, 5 degrees, or the like.

The outer peripheral wall of the sleeve 13 is formed as a tapered surface 131, and accordingly, the end of the sleeve 13 having a smaller outer diameter is a smaller end, and the end having a larger outer diameter is a larger end. The sleeve 13 is inserted into the rotor 12 from the small end so that the outer peripheral wall near the large end is in fit connection with the rotor 12, and the large end is always kept in engagement with the rotor 12 by the urging of the connecting member 14, and the connection tightness is high. Optionally, the large end of the tapered surface 131 is located at the end of the sleeve 13 away from the pick 21 so that the resilient member is located in the space between the large end and the pick 21. Alternatively, the large end of the tapered surface 131 is located at the end of the sleeve 13 close to the pick 21, so that the large end is located in the space between the elastic member and the pick 21. Different wear movable fit is realized to different sleeve 13 layout modes, enlarges connecting rod device in different use scenes. Optionally, the elastic member abuts against the large end, so that the rotating member 12 is always in fit connection with the outer peripheral wall of the large end, and the fit clearance is kept stable.

The rotating member 12 is connected to the double-ended link 11 so that the double-ended link 11 is linked with the swing arm assembly 20. The double-headed connecting rod 11 includes a rod body 113, a first rotating portion 112 and a second rotating portion 114 disposed at two ends of the rod body 113, the first rotating portion 112 includes a through mounting hole 111, and the rotating member 12 is mounted on the first rotating portion 112 and is located in the mounting hole 111. The rotating member 12 and the sleeve 13 are disposed in the mounting hole 111 for power transmission. Alternatively, the second rotating portion 114 is used to mount another set of the rotating member 12 and the sleeve 13, so as to achieve the effect of synchronous rotation flexibility. Optionally, the first rotating portion 112 and the second rotating portion 114 are mounted in the same direction of the sleeve 13 to achieve the same direction rotation adjustment. Optionally, the first rotating part 112 and the second rotating part 114 are installed in opposite directions on the sleeve 13, so as to realize automatic centering adjustment of the two ends of the double-headed connecting rod 11.

To further improve the accuracy of mounting the rotor 12 on the first rotor 112, the mounting hole 111 is configured as a stepped hole to define the mounting position of the rotor 12, and the force applied between the sleeve 13 and the first rotor 112 can be increased accordingly to improve the tightness of fit.

The first rotating portion 112 is rotatably connected to the swing arm assembly 20, and optionally, the double-ended connecting rod 11 further includes an avoiding portion disposed on an outer peripheral wall of the first rotating portion 112, and the avoiding portion faces one side of the swing arm assembly 20. The escape portion is configured as a recessed structure such as a groove or an inclined surface to improve the swing range of the double-headed link 11. Alternatively, the escape portion is arranged as an inclined surface extending from the first rotating portion 112 in the direction of the rod body 113.

See fig. 1, 2 and 4: the swing arm assembly 20 is adapted to be coupled to a drive mechanism for swing operation. In one embodiment, the swing arm assembly 20 includes a connecting shaft 23, a swing arm main body 22 rotatably connected to the connecting shaft 23, and a connecting portion 221 disposed on a side wall of the swing arm main body 22, wherein a free end of the connecting portion 221 is disposed eccentrically from a center line of the swing arm main body 22. The paddle 21 protrudes from the radial direction of the swing arm main body 22, the paddle 21 is provided with a long hole 211, and the rotating member 12 is connected to the long hole 211.

The connecting portion 221 is used for connecting to a driving mechanism to swing the swing arm main body 22 and the pick 21. Wherein, connecting portion 221 and swing arm main part 22 eccentric settings, swing arm main part 22 realize the swing at actuating mechanism's the in-process that reciprocates, conversion power direction, plectrum 21 drives the swing of link assembly 10 then along with swing arm main part 22 swing, realizes the linkage operation, and the linkage is effectual.

The paddle 21 is provided with a long hole 211, and the extending direction of the long hole 211 intersects with the projection of the rotation center line of the swing arm main body 22 to realize the swing arm movement. The link 14 is connected to the elongated hole 211 and slidably connected along the length of the elongated hole 211 so that the relative position of the linkage assembly 10 and the swing arm assembly 20 is adjustable. Alternatively, the coupling member 14 comprises a locking member and a nut member 15 screw-coupled to the locking member, the locking member passing through the sleeve 13 and the pick 21 and being lockingly coupled to the nut member 15 defined in the pick 21. The sleeve 13 is sleeved on the locking member, so that the centers of the sleeve 13 and the rotating member 12 are coincident with the center line of the locking member. The locking member is rotatable relative to the sleeve 13 to connect to the nut member 15, which in turn locks the sleeve 13 in one piece with the pick 21. Further, the nut member 15 is provided with a limiting surface 151, the nut member 15 is inserted into the pick 21, and the limiting surface 151 and the nut member 15 are mutually limited. The nut member 15 is inserted into the long hole 211, and the limiting surface 151 and the hole wall of the long hole 211 are matched with each other, so that the nut member 15 cannot rotate relative to the shifting piece 21. The locking member is threadedly locked to the nut member 15 to provide a locking assembly, facilitating assembly of the linkage assembly 10 with the swing arm assembly 20.

Further, the swing arm assembly 20 further comprises a fitting 24 and a fastener 25 connected to the fitting 24 in a locking manner, the connecting shaft 23 penetrates through the swing arm main body 22 and is connected with the fitting 24, and the center line of the fastener 25 is perpendicular to the center line of the connecting shaft 23. The connecting shaft 23 is configured as a shaft-like structure having an end positioning structure, for example, the connecting shaft 23 is configured as a stepped shaft, a pin, or the like. The fitting 24 is lockingly coupled to the connecting shaft 23 with the fastener 25 to limit the range of motion of the swing arm body 22 between the fitting 24 and the end positioning structure, improving the tightness of assembly of the swing arm assembly 20. The assembly 24 can be configured as a device shell, a pipe structural member, and the like, and the fastener 25 locks the connecting shaft 23 and the assembly 24, so that the swing arm assembly 20 is fixedly connected, and the use convenience is improved.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A linkage arrangement for a high speed sewing machine, comprising:

the swing arm assembly is provided with at least one shifting piece;

2. The link apparatus according to claim 1, wherein the taper of the sleeve is set to 1 to 5 degrees.

3. The linkage according to claim 1, wherein a large end of the tapered surface is located at an end of the sleeve facing away from the paddle.

4. The link apparatus according to claim 1, wherein the double-ended link includes a rod body, a first rotating portion and a second rotating portion provided at both ends of the rod body, the first rotating portion includes a through mounting hole, and the rotating member is mounted on the first rotating portion and located in the mounting hole.

5. The link device according to claim 4, wherein the double-ended link further includes an escape portion provided to an outer peripheral wall of the first rotating portion, the escape portion being directed toward a side of the swing arm assembly.

6. A linkage arrangement according to claim 1, wherein a resilient member is provided between the sleeve and the connecting member.

7. The link assembly of claim 1, wherein the coupling member includes a locking member and a nut member threadably coupled to the locking member, the locking member passing through the sleeve and the paddle and being lockingly coupled to the nut member defined in the paddle.

8. The connecting rod device as claimed in claim 7, wherein the nut member is provided with a limiting surface, the nut member is inserted into the pick, and the limiting surface and the nut member are mutually limited.

9. The link device according to claim 1, wherein the swing arm assembly includes a connecting shaft, a swing arm main body rotatably connected to the connecting shaft, and a connecting portion provided on a side wall of the swing arm main body, a free end of the connecting portion is eccentrically provided with a center line of the swing arm main body, the paddle protrudes from a radial direction of the swing arm main body, the paddle is provided with a long hole, and the rotating member is connected to the long hole.

10. The linkage assembly of claim 9 wherein the swing arm assembly further comprises a fitting and a fastener lockingly connected to the fitting, the connecting shaft extending through the swing arm body and being connected to the fitting, the fastener having a centerline that is perpendicular to a centerline of the connecting shaft.