CN219908052U

CN219908052U - Small-space installation type rotating shuttle feeding tooth structure and sewing machine

Info

Publication number: CN219908052U
Application number: CN202321416535.8U
Authority: CN
Inventors: 王忠军; 石永波
Original assignee: Ningbo Aikesiman Sewing Machine Co ltd
Current assignee: Ningbo Aikesiman Sewing Machine Co ltd
Priority date: 2023-06-05
Filing date: 2023-06-05
Publication date: 2023-10-27
Anticipated expiration: 2033-06-05

Abstract

The utility model discloses a small-space installation type rotating shuttle feeding tooth structure and a sewing machine, comprising a rotating shuttle assembly and a feeding tooth assembly, wherein the feeding tooth assembly comprises a feeding tooth and a lifting tooth shaft, the feeding tooth assembly further comprises a transmission shaft and a linkage assembly, the lifting tooth shaft and the transmission shaft are rotatably installed on a bottom plate, the feeding tooth is coupled with the transmission shaft, one end of the transmission shaft is positioned in a stitch box, and the other end of the transmission shaft extends out of the stitch box and is coupled with the lifting tooth shaft by the linkage assembly; the linkage assembly realizes linkage of the transmission shaft and the feed lifting shaft, and the transmission shaft rotates to drive the feed feeding teeth to move. By adopting the scheme, the small-space installation type rotating shuttle feeding tooth structure is provided, and the structure in the stitch box is reduced by replacing the linkage of the lifting tooth shaft and the feeding tooth through the transmission shaft.

Description

Small-space installation type rotating shuttle feeding tooth structure and sewing machine

Technical Field

The utility model belongs to the field of sewing machines, and particularly relates to a small-space installation type rotating shuttle feeding tooth structure and a sewing machine.

Background

A Sewing machine (Sewing machine) is a machine that uses one or more Sewing threads to form one or more stitches on a material to interweave or stitch one or more layers of material.

The existing sewing machine can refer to a sewing machine disclosed in chinese patent No. cn202122543546.X, wherein a rotating shuttle is one of important mechanisms of the sewing machine, and is connected to the left end of the lower shaft 34 to move under the driving action of the lower shaft 34 so as to match with threading of other structures in order, in addition, a feed dog 19 is another important mechanism of the sewing machine and is located above the rotating shuttle, and the vertical movement of the feed dog 19 is realized by the action of a feed dog shaft 37 (connected with a power source, which not only provides power for the feed dog shaft 37 but also provides power for other actions of the sewing machine) and a feed dog fork 38, and the front-back movement of the feed dog 19 is realized by the linkage of the feed dog 16, a feed dog seat 17 and a feed dog 18, so as to finally realize continuous sewing of cloth in the sewing process.

In addition, in order to ensure that the rotating shuttle and the feed dog 19 do not interfere with the outside under high-speed movement, a stitch box (not shown in the above patent) is generally provided to internally mount the rotating shuttle, the feed dog 19, the feed dog fork 38, the feed dog seat 17 and the feed dog frame 18, and the lower shaft 34, the feed dog shaft 37 and the feed dog shaft 16 are sequentially inserted into the stitch box from the right side to the left side of the stitch box and are mounted in corresponding structures.

However, since the right end of the lifting shaft needs to be connected with a power source to drive the lifting shaft to rotate, and in order to ensure the effectiveness of transmission, the lifting shaft needs to have a certain distance (enough installation space) between 1 and a diameter (enough torque) and 2 and the lower shaft, so that the lifting shaft can extend into the stitch box to move in parallel with the feed dog, the volume of the stitch box is easy to be large, and the adaptation of a sewing machine with a small volume of the stitch box cannot be met.

In addition, the setting of the lifting tooth shaft can be omitted, and the motor is directly and independently arranged on the lifting tooth fork rod, so that the problems of the scheme are that the power sources of the sewing machine are too many, and the electric control error is easy to occur due to poor mechanical linkage.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a small-space installation type rotating shuttle feeding tooth structure which reduces the structure in a stitch box by replacing the linkage of a lifting tooth shaft and a feeding tooth through a transmission shaft.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the small-space installation type rotating shuttle feeding tooth structure comprises a rotating shuttle assembly and a feeding tooth assembly, wherein the feeding tooth assembly comprises a feeding tooth and a lifting tooth shaft, the feeding tooth assembly further comprises a transmission shaft and a linkage assembly, the lifting tooth shaft and the transmission shaft are used for being rotatably installed on a bottom plate, the feeding tooth is coupled with the transmission shaft, one end of the transmission shaft is positioned in a stitch box, and the other end of the transmission shaft extends out of the stitch box and is coupled with the lifting tooth shaft by the linkage assembly; the linkage assembly realizes linkage of the transmission shaft and the feed lifting shaft, and the transmission shaft rotates to drive the feed feeding teeth to move.

The utility model is further provided with: the lifting tooth shaft and the transmission shaft are arranged in parallel.

The utility model is further provided with: the linkage assembly comprises a first crank, a second crank and a conversion connecting rod, the tooth lifting shaft, the first crank, the conversion connecting rod, the second crank and the transmission shaft are sequentially connected, and the conversion connecting rod is hinged with the first crank and the second crank respectively.

The utility model is further provided with: the first crank is provided with a first installation jack for inserting the lifting tooth shaft along the axial direction of the lifting tooth shaft in a penetrating manner, and the second crank is provided with a second installation jack for inserting the transmission shaft along the axial direction of the transmission shaft in a penetrating manner.

The utility model is further provided with: the diameter of the transmission shaft is smaller than that of the tooth lifting shaft.

The utility model is further provided with: the rotating shuttle assembly comprises a rotating shuttle and an input shaft for driving the rotating shuttle to rotate, the input shaft is rotatably arranged on the bottom plate, and the transmission shaft is positioned between the input shaft and the lifting tooth shaft.

The utility model is further provided with: the feeding tooth assembly further comprises a tooth frame positioned in the pin box, and the feeding tooth is arranged on the tooth frame; the tooth frame is provided with a tooth lifting pin, and the transmission shaft is provided with a tooth lifting fork matched with the tooth lifting pin; or, the tooth frame is provided with a tooth lifting fork, and the transmission shaft is provided with a tooth lifting pin matched with the tooth lifting fork.

The utility model is further provided with: the feeding tooth assembly further comprises a tooth frame seat and a feeding shaft, the feeding shaft is rotatably arranged on the bottom plate, the tooth frame seat is arranged in the pin box, and the tooth frame seat is respectively connected with the feeding shaft and the tooth frame; the feeding shaft rotates to swing the dental articulator.

Through adopting above-mentioned technical scheme, 1, under the effect of linkage subassembly, the transmission shaft rotates with lifting the feed dog axle linkage, and drive other spare part drive to the feed dog subassembly and realize driving feed dog up-and-down motion through the transmission shaft rotation, 2, because the transmission shaft is closer to the input shaft, make and need not to carry out spare part setting on the lifting the feed dog axle that the interval is farther and come the linkage feed dog and lift the feed dog, but can carry out the setting of spare part on the transmission shaft and come the linkage feed dog and lift the feed dog, vacate the space of transmission shaft front side and make the structure volume at rotating shuttle and feed dog department smaller, and inseparabler, thereby be applied to the whole volume of sewing machine that corresponds the design is smaller or can realize that the sewing machine vacates more space for more structural design

A sewing machine comprises the small-space installation type rotating shuttle feeding tooth structure.

By adopting the technical scheme, the formed sewing machine has smaller overall volume or can realize the design that the sewing machine vacates more space for more structures.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an assembly view of a first embodiment of the present utility model;

FIG. 2 is an assembly view of a first embodiment of the present utility model;

FIG. 3 is an exploded view of an embodiment one;

FIG. 4 is an exploded view of a rotary hook assembly and a feed dog assembly in accordance with an embodiment;

FIG. 5 is an exploded view of a lifter shaft, drive shaft and linkage assembly in accordance with an embodiment I;

FIG. 6 is an exploded view of a first crank, a second crank, and a transfer link according to an embodiment I;

fig. 7 is an enlarged view of a in fig. 4.

Reference numerals: 1. a bottom plate; 11. a needle plate seat; 12. a needle plate; 2. a rotating shuttle assembly; 21. a rotating shuttle; 22. an input shaft; 3. a feed dog assembly; 31. feeding teeth; 32. a tooth lifting shaft; 33. a transmission shaft; 34. a linkage assembly; 35. a dental frame; 36. a dental frame base; 37. a feeding shaft; 341. a first crank; 342. a second crank; 343. a conversion connecting rod; 344. a first mounting receptacle; 345. a second mounting jack; 4. a stitch cassette; 41. a box cover; 42. a cover plate; 51. a lifting tooth pin; 52. and lifting the tooth fork.

Detailed Description

The utility model will be described in detail below with respect to certain specific embodiments thereof in order to better understand the utility model and thereby to more clearly define the scope of the utility model as claimed. It should be noted that the following description is only some embodiments of the inventive concept and is only a part of examples of the present utility model, wherein the specific direct description of the related structures is only for the convenience of understanding the present utility model, and the specific features do not naturally and directly limit the implementation scope of the present utility model. Conventional selections and substitutions made by those skilled in the art under the guidance of the inventive concept should be considered as being within the scope of the claimed utility model.

Embodiment one:

as shown in fig. 1-7, the utility model discloses a small space installation type rotating shuttle feeding tooth structure, which comprises a bottom plate 1, wherein a rotating shuttle assembly 2, a feeding tooth assembly 3 and a stitch box 4 are installed at the lower end of the bottom plate 1, the rotating shuttle assembly 2 comprises a rotating shuttle 21 and an input shaft 22, the input shaft 22 is rotatably installed on the bottom plate 1 in a shaft sleeve manner and axially along the left-right direction, the rotating shuttle 21 is fixedly installed on the left side of the input shaft 22 in a clamping manner, a bolt manner and the like and is positioned in the stitch box 4, in addition, the feeding tooth assembly 3 comprises a feeding tooth 31, a lifting tooth shaft 32, a transmission shaft 33 and a linkage assembly 34, the feeding tooth 31 is positioned in the stitch box 4 and is positioned above the rotating shuttle 21, the lifting tooth shaft 32 and the transmission shaft 33 are rotatably installed on the bottom plate 1 in a shaft sleeve manner, the lifting tooth shaft 32 is positioned on the front side of the input shaft 22, the left end of the transmission shaft 33 is inserted into the stitch box 4 towards the left side and is coupled with the feeding tooth 31, the right end is positioned on the outer side of the stitch box 4 in a clamping manner, and the dynamic element 34 is connected with the lifting tooth shaft 32 in a manner, and the power source is required to be coupled with the lifting tooth shaft 32.

Therefore, 1, under the condition that no additional power source is added, the power source drives the lifting tooth shaft 32, under the action of the linkage assembly 34, the lifting tooth shaft 32 is linked to realize the rotation of the transmission shaft 33, and drives other parts of the feeding tooth assembly 3 to drive the feeding tooth 31 to move up and down through the rotation of the transmission shaft 33, 2, as the lifting tooth shaft 32 does not need to extend into the feeding tooth 31 in the stitch box 4 to drive, the position of the transmission shaft 33 can be adjusted according to the actual design requirement of the stitch box to align the stitch box 4 with smaller volume, and the stitch box 4 is inserted into the linkage with the other parts of the feeding tooth assembly 3, so that the adaptability is higher.

Preferably, the transmission shaft 33 in this embodiment is located between the input shaft 22 and the lifting tooth shaft 32, so, since the transmission shaft 33 is closer to the input shaft 22, it is not necessary to perform component arrangement on the lifting tooth shaft 32 with a further distance to link the lifting tooth of the feeding tooth 31, but component arrangement can be performed on the transmission shaft 33 to link the lifting tooth of the feeding tooth 31, so that the space in front of the transmission shaft 33 is emptied, so that the structure at the rotating shuttle 21 and the feeding tooth 31 is smaller and more compact, and the whole volume of the sewing machine applied to the corresponding design is smaller or more space can be saved for the more structural design of the sewing machine.

Preferably, the diameter of the transmission shaft 33 in this embodiment is smaller than the diameter of the lifting shaft 32, so that the diameter of the transmission shaft 33 is reduced as much as possible to achieve the reduction of the overall volume while ensuring sufficient bearing torque.

In addition, if the space is enough, the diameter of the transmission shaft 33 can be larger than the diameter of the tooth lifting shaft 32 according to the actual requirement.

Preferably, the lifting shaft 32 and the transmission shaft 33 in this embodiment are disposed parallel to each other, so that the linkage assembly 34 is more convenient to set between the parallel lifting shaft and the transmission shaft, and the mounting of the sewing machine is more convenient based on the parallel lifting shaft 32 and the transmission shaft 33, and the left and right relative positions of the lifting shaft 32 and the transmission shaft 33 are adjusted more conveniently.

Specifically, the linkage assembly 34 in this embodiment includes a first crank 341, a second crank 342, and a conversion link 343, where the lifting shaft 32 is sleeved with one end of the first crank 341 and is fastened by a bolt, the other end of the first crank 341 is hinged with one end of the conversion link 343 by a bolt, the other end of the conversion link 343 is hinged with one end of the second crank 342 by a bolt, and the other end of the second crank 342 is sleeved with the periphery of the transmission shaft 33 and is fastened by a bolt, so that the lifting shaft 32 and the transmission shaft 33 can synchronously rotate under the action of the linkage assembly 34.

Preferably, the first crank 341 is provided with a first mounting insertion hole 344 for inserting the lifting shaft 32 along the axial direction of the lifting shaft 32, and the second crank 342 is provided with a second mounting insertion hole 345 for inserting the transmission shaft 33 along the axial direction of the transmission shaft 33, so that the lifting shaft 32 can be axially adjusted in position under the cooperation of the first mounting insertion hole 344, and the transmission shaft 33 can be axially adjusted in position under the cooperation of the second mounting insertion hole 345, so that the adjustment is more convenient.

In addition, in this embodiment, the lower side of the base is provided with the stitch box 4 by adopting a bolt or the like, so that a cavity is formed between the stitch box 4 and the base, and the rotating shuttle 21 and the feeding teeth 31 are correspondingly arranged in the cavity, and the lifting teeth 32 are arranged outside the cavity, so that the rotating shuttle 21 and the feeding teeth 31 are covered by the cavity, and when in operation, the rotating shuttle 21 and the feeding teeth 31 move at a high speed and are not easy to interfere with the outside, thereby realizing high-precision sewing operation.

The feeding tooth assembly 3 in this embodiment further includes a tooth frame 35 located in the pin box 4, and the feeding tooth 31 is fixedly mounted on the tooth frame 35 by adopting a bolt manner; in addition, the frame 35 is provided with a lifting pin 51, and correspondingly, the transmission shaft 33 is provided with a lifting fork 52 matched with the lifting pin 51

The feeding tooth assembly 3 in this embodiment further includes a tooth rack seat 36 and a feeding shaft 37, the feeding shaft 37 is rotatably mounted on the bottom plate 1 in a shaft sleeve manner and is located at the rear side of the input shaft 22, the tooth rack seat 36 is disposed in the cavity and is located at the rear side, in addition, one end of the tooth rack seat 36 is sleeved at the left end of the feeding shaft 37 and is tightened by adopting a bolt manner, and the other end is hinged with the tooth rack 35 in a bolt manner; therefore, the feed shaft 37 can rotate to realize the forward and backward swinging of the tooth frame 35 through the tooth frame seat 36, and the linkage movement can be realized by matching with the tooth lifting work of the upper transmission shaft 33 to automatically feed the cloth in the sewing process.

Preferably, the stitch cassette 4 in this embodiment includes a separate cassette cover 41 and cover plate 42, and the cover plate 42 is located at the left side of the cassette cover 41, in addition, the left side of the bottom plate 1 is provided with a pin plate seat 11 connected by bolts and a pin plate 12 mounted on the pin plate seat 11 by bolts, the cassette cover 41 is mounted on the pin plate seat 11 and the bottom plate 1 respectively by bolts, and the cover plate 42 is mounted at the left side of the pin plate seat 11 by bolts, so if the damage of the components occurs in the stitch cassette 4, the stitch cassette 4 can be detached for internal observation and maintenance, and the cover plate 42 can be detached alone for replacing the needle thread after the needle thread on the rotating shuttle 21 is practically used.

In addition, the above scheme can be realized in a better way by selecting gears and materials of the tooth lifting shaft 32 and the transmission shaft 33.

Embodiment two:

the small space installation type rotating shuttle feeding tooth structure has the main structure the same as that of the first embodiment, except that the linkage assembly 34 adopts a gear set, a belt pulley and other modes for linkage.

Embodiment III:

the main structure of the small-space installation type rotating shuttle feeding tooth structure is the same as that of the first embodiment, and the difference is that the tooth frame 35 is provided with a tooth lifting fork 52, and the transmission shaft 33 is provided with a tooth lifting pin 51 matched with the tooth lifting fork 52, so that the setting objects of the tooth lifting fork 52 and the tooth lifting pin 51 are exchanged, and the tooth lifting work of the feeding tooth 31 can be completed by the cooperation of the transmission shaft 33 and the tooth frame 35.

Embodiment four:

the utility model discloses a sewing machine, which comprises a small-space installation type rotating shuttle feeding tooth structure in any one of the first embodiment to the third embodiment.

Therefore, the sewing machine formed by adopting the small-space installation type rotating shuttle feeding tooth structure has the design that the whole volume is smaller or the sewing machine can vacate more space for more structure.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a little space installation formula rotating shuttle feed dog structure, includes rotating shuttle subassembly (2) and feed dog subassembly (3), feed dog subassembly (3) include feed dog (31) and lift tooth axle (32), its characterized in that:

the feeding tooth assembly (3) further comprises a transmission shaft (33) and a linkage assembly (34), the feed lifting tooth shaft (32) and the transmission shaft (33) are rotatably arranged on the bottom plate (1), the feeding tooth (31) is coupled with the transmission shaft (33), one end of the transmission shaft (33) is positioned in the stitch box (4), and the other end of the transmission shaft extends out of the stitch box (4) and is coupled with the feed lifting tooth shaft (32) through the linkage assembly (34);

the linkage assembly (34) realizes linkage of the transmission shaft (33) and the lifting tooth shaft (32), and the transmission shaft (33) rotates to drive the feeding tooth (31) to move.

2. The small space-mounted rotary hook feed tooth structure as claimed in claim 1, wherein: the lifting tooth shaft (32) and the transmission shaft (33) are arranged in parallel.

3. The small space-mounted rotary hook feed tooth structure as claimed in claim 1 or 2, wherein: the linkage assembly (34) comprises a first crank (341), a second crank (342) and a conversion connecting rod (343), the tooth lifting shaft (32), the first crank (341), the conversion connecting rod (343), the second crank (342) and the transmission shaft (33) are sequentially connected, and the conversion connecting rod (343) is hinged with the first crank (341) and the second crank (342) respectively.

4. A small space-mounted rotary hook feed dog structure according to claim 3, wherein: the first crank (341) is provided with a first mounting jack (344) for inserting the lifting shaft (32) along the axial direction of the lifting shaft (32), and the second crank (342) is provided with a second mounting jack (345) for inserting the transmission shaft (33) along the axial direction of the transmission shaft (33).

5. The small space-mounted rotary hook feed tooth structure as claimed in claim 1, wherein: the diameter of the transmission shaft (33) is smaller than that of the lifting tooth shaft (32).

6. The small space-mounted rotary hook feed tooth structure as claimed in claim 1, wherein: the rotating shuttle assembly (2) comprises a rotating shuttle (21) and an input shaft (22) for driving the rotating shuttle (21) to rotate, the input shaft (22) is rotatably arranged on the bottom plate (1), and the transmission shaft (33) is positioned between the input shaft (22) and the lifting tooth shaft (32).

7. The small space-mounted rotary hook feed tooth structure as claimed in claim 1, wherein: the feeding tooth assembly (3) further comprises a tooth frame (35) positioned in the stitch box (4), and the feeding tooth (31) is arranged on the tooth frame (35);

a lifting tooth pin (51) is arranged on the tooth frame (35), and a lifting tooth fork (52) matched with the lifting tooth pin (51) is arranged on the transmission shaft (33); or alternatively, the first and second heat exchangers may be,

the tooth frame (35) is provided with a tooth lifting fork (52), and the transmission shaft (33) is provided with a tooth lifting pin (51) matched with the tooth lifting fork (52).

8. The small space-mounted rotary hook feed dog structure according to claim 7, wherein: the feeding tooth assembly (3) further comprises a tooth frame seat (36) and a feeding shaft (37), the feeding shaft (37) is rotatably arranged on the bottom plate (1), the tooth frame seat (36) is positioned in the stitch box (4), and the tooth frame seat (36) is respectively connected with the feeding shaft (37) and the tooth frame (35);

the feed shaft (37) rotates to swing the dental frame (35).

9. A sewing machine, characterized in that: comprising the small space-mounted rotary hook feed tooth structure of any one of claims 1 to 8.