CN216809168U

CN216809168U - Feed lifting mechanism of sewing machine

Info

Publication number: CN216809168U
Application number: CN202122983510.3U
Authority: CN
Inventors: 鲍序进; 谢华君
Original assignee: Xiamen Xinhansen Textile And Garment Co ltd
Current assignee: Xiamen Xinhansen Textile And Garment Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-06-24
Anticipated expiration: 2031-12-01

Abstract

The utility model discloses a feed lifting mechanism of a sewing machine, belonging to the technical field of sewing machines, comprising a main shaft, a working box, a feeding shaft and a feed lifting shaft which are arranged in the working box, the main shaft is in transmission connection with the feeding shaft through a first connecting mechanism, the main shaft is in transmission connection with the feed lifting tooth shaft through a second connecting mechanism, the feeding shaft is fixedly connected with a feeding connecting rod, one end of the feeding connecting rod is hinged with a tooth rack, a feed lifting fork-shaped crank is fixedly connected to the feed lifting shaft, a first sliding block is fixedly connected to one end of the feed lifting frame close to the feed lifting shaft, the first slide block is connected with the feed lifting fork-shaped crank in a sliding way, a cleaning device is arranged on one side of the feed lifting fork-shaped crank on the feed lifting shaft, the working box is provided with the working platform above the dental articulator, and the dental articulator has the advantages of automatically cleaning dust, cotton wool and other sundries on the dental articulator and ensuring that the dental articulator can be lifted to the required height in use.

Description

Feed lifting mechanism of sewing machine

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a tooth lifting mechanism of a sewing machine.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material.

The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient. And derives the artistic forms of hand-push embroidery, computer embroidery, etc.

After the existing sewing machine is used for a period of time, dust impurities are easily accumulated on the upper surface of the toothed plate of the feed dog and are filled in a gap between the upper surface of the toothed plate and the lower surface of the working table of the sewing machine, if the dust impurities are not cleaned in time, the dust impurities are more and more accumulated, the distance between the upper surface of the toothed plate and the lower surface of the working table of the sewing machine is enlarged, and finally the feed dog cannot be lifted to the required height, so that the normal use of the sewing machine is influenced.

Based on the above, the utility model designs a sewing machine feed lifting mechanism to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a feed lifting mechanism of a sewing machine, which aims to solve the technical problem.

In order to achieve the purpose, the utility model provides the following technical scheme: a feed shaft and a feed lifting shaft are arranged in the working box, the main shaft is in transmission connection with the feed shaft through a first connecting mechanism, the main shaft is in transmission connection with the feed lifting shaft through a second connecting mechanism, a feed connecting rod is fixedly connected to the feed shaft, one end of a feed rack is hinged to the feed connecting rod, a feed lifting fork-shaped crank is fixedly connected to the feed lifting shaft, a first sliding block is fixedly connected to one end, close to the feed lifting shaft, of the feed lifting rack, the first sliding block is in sliding connection with the feed lifting fork-shaped crank, a cleaning device is arranged on one side, located on the feed lifting shaft, of the feed lifting fork-shaped crank, and a working platform is arranged above the feed lifting rack.

Preferably, the cleaning device comprises a cleaning crank fixedly connected to the feed lifting shaft, a push rod is fixedly connected to the cleaning crank, the push rod is of an inverted-L shape, the top of the push rod is located above one side of the tooth rack, a compressed air outlet device is fixedly connected to the top of the push rod, and the top of the compressed air outlet device is fixedly connected to the inner wall of the working box.

Preferably, the compressed air outlet device comprises a compression box, one side of the compression box, which is close to the tooth rack, is fixedly connected with an air outlet nozzle, a spring is vertically arranged on the compression box, and the spring corresponds to the push rod.

Preferably, the first connecting mechanism is fixedly connected to a first cam on the main shaft, a first fork frame is arranged on the outer side of the first cam, a first crank is fixedly connected to a position, corresponding to the first fork frame, on the feeding shaft, one end, far away from the first cam, of the first fork frame is hinged to the first crank, a second slider is fixedly connected to the side face of the first fork frame, a second fork frame which is obliquely arranged is arranged on the outer side of the second slider, and one end, far away from the second slider, of the second fork frame is fixedly connected to the inner wall of the working box.

Preferably, the main shaft is fixedly connected with a crankshaft corresponding to the position of the second connecting mechanism, the second connecting mechanism comprises a first rocker which is rotatably connected with the crankshaft, one end, far away from the crankshaft, of the first rocker is rotatably connected with a second rocker which is horizontally arranged through a pin shaft, one end, far away from the first rocker, of the second rocker is horizontally and fixedly connected with a transmission shaft, one end, far away from the second rocker, of the transmission shaft is fixedly connected with a second cam, a third fork frame is arranged on the outer side of the second cam, and the third fork frame is fixedly connected with the tooth lifting shaft.

Preferably, the transmission shaft and the feed lifting rock shaft are parallel to each other.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, when the cleaning crank swings upwards, the compression box is pressed to compress the compression box, air in the compression box is sprayed onto the tooth rack from the air outlet nozzle of the compression box, dust and sundries on the tooth rack are blown away, and the tooth rack is kept clean, so that the phenomenon that the dust and sundries are filled in a gap between the tooth plate and the lower surface of the working table of the sewing machine, and the cloth feeding tooth cannot reach the specified height is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an integrated transmission device according to the present embodiment;

FIG. 2 is a schematic view showing the first connecting mechanism and the second connecting mechanism of the present embodiment;

fig. 3 is a schematic sectional structural view of the installation box in the embodiment.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a main shaft; 101. a crankshaft; 2. a first rocker arm; 3. a first cam; 301. a second slider; 4. a first fork frame; 5. a feed shaft; 6. a first crank; 7. a second rocker; 8. a drive shaft; 9. a third fork frame; 901. a feed lifting shaft; 902. a push rod; 903. a feed lifting fork shaped crank; 904. cleaning the crank; 10. a second cam; 11. a dental articulator; 1101. a first slider; 12. A feeding connecting rod; 13. a second fork frame; 14. an air outlet nozzle; 15. a compression box; 16. a spring; 17. A work box; 1701. a working platform.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution:

a feed lifting mechanism of a sewing machine comprises a main shaft 1, a working box 17, a feeding shaft 5 and a lifting tooth shaft 901 which are arranged in the working box 17, wherein the main shaft 1 is in transmission connection with the feeding shaft 5 through a first connecting mechanism, the main shaft 1 is in transmission connection with the lifting tooth shaft 901 through a second connecting mechanism, a feeding connecting rod 12 is fixedly connected on the feeding shaft 5, one end of a tooth frame 11 is hinged on the feeding connecting rod 12, a lifting tooth fork-shaped crank 903 is fixedly connected on the lifting tooth shaft 901, one end of the tooth frame 11 close to the lifting tooth shaft 901 is fixedly connected with a first sliding block 1101, the first sliding block 1101 is in sliding connection with the lifting tooth fork-shaped crank 903, a cleaning device is arranged on one side of the lifting tooth fork-shaped crank 903 on the lifting tooth shaft 901, a working platform 1701 is arranged above the tooth frame 11 on the working box 17, and most parts of the first connecting mechanism, the second connecting mechanism, the feeding shaft 5, the lifting tooth shaft 901 and the main shaft 1 are coated by the working box 17 in the embodiment, the main shaft 1, the feed lifting tooth shaft 901 and the feed shaft 5 are parallel to each other, the first connecting mechanism and the second connecting mechanism are positioned at one end of the main shaft 1, the tooth frame 11 is positioned below the other end of the main shaft 1, the hinge point of the feed connecting rod 12 and the tooth frame 11 is positioned right above the feed shaft 5, the feed lifting tooth fork-shaped crank 903 is horizontally arranged, and the feed lifting tooth fork-shaped crank 903 is in a tuning fork shape; the main shaft 1 drives the feeding shaft 5 through the first connecting mechanism, the feeding shaft 5 drives the feeding connecting rod 12 to swing left and right, and the feeding connecting rod 12 drives the tooth frame 11 to swing left and right; the main shaft 1 drives the feed lifting rock shaft 901 through the second connecting mechanism, the feed lifting rock shaft 901 drives the feed lifting fork-shaped crank 903 to swing up and down, and the feed lifting fork-shaped crank 903 drives the tooth rack 11 to swing up and down.

Preferably, cleaning device includes the clean crank 904 of fixed connection on lifting tooth axle 901, fixedly connected with push rod 902 on the clean crank 904, push rod 902 is the type of falling L, push rod 902 top is located the top of dental articulator 11 one side, push rod 902 top fixedly connected with compression air-out device, the top fixed connection of compression air-out device is in work box 17 inner wall, clean crank 904 in this embodiment is the level setting, push rod 902 is vertical setting, when lifting tooth axle 901 and making certain angle's round trip rotation, drive push rod 902 and do the luffing motion, thereby oppress compression air-out device, make its air-out.

Preferably, the compression air-out device includes a compression box 15, one side of the compression box 15 close to the dental articulator 11 is fixedly connected with an air-out nozzle 14, the compression box 15 is vertically provided with a spring 16, the spring 16 corresponds to the position of the push rod 902, when the compression box 15 in this embodiment is pressed by the push rod 902, the compression box 15 will be compressed, the internal volume of the compression box 15 is reduced, the air in the compression box 15 is ejected from the air-out nozzle 14, blow away dust and sundries on the dental articulator 11, keep the dental articulator 11 clean, when the compression box 15 is pressed, the spring 16 in the compression box 15 is also pressed, when the push rod 902 moves downwards, under the effect of the elastic force of the spring 16, the compression box 15 is rapidly restored to the state before being pressed.

Preferably, the first connecting mechanism is fixedly connected to a first cam 3 on the main shaft 1, a first fork frame 4 is arranged outside the first cam 3, a first crank 6 is fixedly connected to a position, corresponding to the first fork frame 4, on the feeding shaft 5, one end, away from the first cam 3, of the first fork frame 4 is hinged to the first crank 6, a second slider 301 is fixedly connected to the side surface of the first fork frame 4, a second fork frame 13 is obliquely arranged outside the second slider 301, one end, away from the second slider 301, of the second fork frame 13 is fixedly connected to the inner wall of the working box 17, in this embodiment, the first crank 6 is horizontally arranged, the first fork frame 4 and the second fork frame 13 are both in a tuning fork shape, the lower end of the second fork frame 13 faces the second slider 301, when the main shaft 1 drives the first cam 3 to rotate, under the action of the first cam 3, the first fork frame 4 swings in the horizontal direction, and when the first fork frame 4 swings, the second slide block 301 is driven to swing, the second slide block 301 is limited by the second fork frame 13, the second slide block 301 reciprocates along the inclined direction, so that the first fork frame 4 is driven to reciprocate in the inclined direction, the first fork frame 4 drives the first crank 6 to swing up and down, the first crank 6 drives the feeding shaft 5 to do reciprocating rotation with small amplitude, and the feeding shaft 5 drives the feeding connecting rod 12 to swing left and right.

Preferably, the crankshaft 101 is fixedly connected to the position of the main shaft 1 corresponding to the second connecting mechanism, the second connecting mechanism includes a first rocker 2 rotatably connected to the crankshaft 101, one end of the first rocker 2 away from the crankshaft 101 is rotatably connected to a horizontally arranged second rocker 7 through a pin, one end of the second rocker 7 away from the first rocker 2 is horizontally and fixedly connected to a transmission shaft 8, one end of the transmission shaft 8 away from the second rocker 7 is fixedly connected to a second cam 10, a third fork 9 is arranged outside the second cam 10, the third fork 9 is fixedly connected to the tooth lifting shaft 901, the third fork 9 in this embodiment is in a fork shape, the third fork 9 is horizontally arranged, the transmission shaft 8 is installed in the work box 17, the second rocker 7 is in a horizontal state, when the main shaft 1 drives the crankshaft 101 to rotate, the crankshaft 101 drives the first rocker 2 to swing up and down, the first rocker 2 swings up and down drives the second rocker 7 to swing up and down, the second rocker drives the transmission shaft 8 to do reciprocating rotation with a small amplitude, the transmission shaft 8 drives the second cam 10 to do reciprocating rotation with a small amplitude, the second cam 10 drives the third fork frame 9 to do up-and-down swing when rotating, the third fork frame 9 drives the feed lifting shaft 901 to do reciprocating rotation with a small amplitude, and the feed lifting shaft 901 drives the feed lifting fork-shaped crank 903 to do up-and-down swing.

Preferably, the transmission shaft 8 and the feed lifting shaft 901 are parallel to each other, and the transmission shaft 8 in this embodiment is parallel to the feed lifting shaft 901, so that the motion of the transmission shaft 8 can be stably transmitted to the feed lifting shaft 901.

One specific application of this embodiment is:

when the feeding device is used, when the main shaft 1 drives the first cam 3 to rotate, the first fork frame 4 swings in the horizontal direction under the action of the first cam 3, the first fork frame 4 swings to drive the second sliding block 301 to swing, the second sliding block 301 is limited by the second fork frame 13, the second sliding block 301 reciprocates along the inclined direction, so that the first fork frame 4 is driven to reciprocate in the inclined direction, the first fork frame 4 drives the first crank 6 to swing up and down, the first crank 6 drives the feeding shaft 5 to reciprocate in a small amplitude, the feeding shaft 5 drives the feeding connecting rod 12 to reciprocate left and right, and the feeding connecting rod 12 drives the tooth frame 11 to reciprocate left and right; when the main shaft 1 drives the crankshaft 101 to rotate, the crankshaft 101 drives the first rocker 2 to swing up and down, the first rocker 2 swings up and down to drive the second rocker 7 to swing up and down, the second rocker drives the transmission shaft 8 to rotate in a small-amplitude reciprocating manner, the transmission shaft 8 drives the second cam 10 to rotate in a small-amplitude reciprocating manner, the second cam 10 rotates to drive the third fork 9 to swing up and down, the third fork 9 drives the lifting tooth shaft 901 to rotate in a small-amplitude reciprocating manner, the lifting tooth shaft 901 drives the lifting tooth fork-shaped crank 903 to swing up and down, the lifting tooth fork-shaped crank 903 drives the tooth rack 11 to swing up and down in a reciprocating manner, meanwhile, the lifting tooth shaft 901 drives the cleaning crank 904 to drive the push rod 902 to swing up and down, when the push rod 902 moves up, the compression box 15 is squeezed, gas in the compression box 15 is ejected from the air outlet 14, the tooth rack 11 is cleaned, impurities such as dust and the like are prevented from being accumulated on the tooth rack 11, and the tooth rack 11 cannot rise to a required height, when the push rod 902 moves downward, the compression box 15 is restored to a state before being compressed by the spring 16.

In conclusion, the rotation of the main shaft 1 is converted into the small-angle reciprocating rotation of the feeding shaft 5 and the feed lifting shaft 901 through the arrangement of the first connecting mechanism and the second connecting mechanism, the tooth rack 11 is driven to reciprocate through the arrangement of the feed lifting fork-shaped crank and the feed connecting rod 12, and the dust sundries on the tooth rack 11 can be effectively cleaned through the arrangement of the cleaning device, so that the tooth rack 11 is prevented from being lifted to the required height.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate agent, and may be used for communicating the inside of two elements or interacting relation of two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sewing machine feed lifting mechanism, includes main shaft (1), work box (17), sets up pay-off axle (5) and feed lifting shaft (901) in work box (17), its characterized in that: the main shaft (1) is in transmission connection with a feeding shaft (5) through a first connection mechanism, the main shaft (1) is in transmission connection with a feed lifting tooth shaft (901) through a second connection mechanism, a feeding connection rod (12) is fixedly connected to the feeding shaft (5), one end of a tooth frame (11) is hinged to the feeding connection rod (12), a tooth lifting fork-shaped crank (903) is fixedly connected to the feed lifting tooth shaft (901), one end, close to the feed lifting tooth shaft (901), of the tooth frame (11) is fixedly connected with a first sliding block (1101), the first sliding block (1101) is in sliding connection with the tooth lifting fork-shaped crank (903), a cleaning device is arranged on one side, located on the tooth lifting fork-shaped crank (903), of the feed lifting tooth shaft (901), and a working platform (1701) is arranged above the tooth frame (11) of the working box (17).

2. The sewing machine feed lifting mechanism according to claim 1, wherein: the cleaning device comprises a cleaning crank (904) fixedly connected to a feed lifting shaft (901), a push rod (902) is fixedly connected to the cleaning crank (904), the push rod (902) is of an inverted L shape, the top of the push rod (902) is located above one side of a tooth frame (11), a compression air-out device is fixedly connected to the top of the push rod (902), and the top of the compression air-out device is fixedly connected to the inner wall of a working box (17).

3. The sewing machine feed lifting mechanism according to claim 2, wherein: the compression air-out device comprises a compression box (15), one side of the compression box (15) close to the tooth rack (11) is fixedly connected with an air outlet nozzle (14), the compression box (15) is vertically provided with a spring (16), and the spring (16) corresponds to the position of the push rod (902).

4. The sewing machine feed lifting mechanism according to claim 1, wherein: the feeding mechanism comprises a first connecting mechanism and a second connecting mechanism, wherein the first connecting mechanism is fixedly connected with a first cam (3) on a main shaft (1), a first fork frame (4) is arranged on the outer side of the first cam (3), a first crank (6) is fixedly connected to a position, corresponding to the first fork frame (4), on a feeding shaft (5), one end, far away from the first cam (3), of the first fork frame (4) is hinged to the first crank (6), a second sliding block (301) is fixedly connected to the side face of the first fork frame (4), a second fork frame (13) which is obliquely arranged is arranged on the outer side of the sliding block of the second sliding block (301), and one end, far away from the second sliding block (301), of the second fork frame (13) is fixedly connected to the inner wall of a working box (17).

5. The sewing machine feed lifting mechanism according to claim 1, wherein: the main shaft (1) is fixedly connected with a crankshaft (101) corresponding to the position of the second connecting mechanism, the second connecting mechanism comprises a first rocker (2) which is rotatably connected with the crankshaft (101), one end, far away from the crankshaft (101), of the first rocker (2) is rotatably connected with a second rocker (7) which is horizontally arranged through a pin shaft, one end, far away from the first rocker (2), of the second rocker (7) is horizontally and fixedly connected with a transmission shaft (8), one end, far away from the second rocker (7), of the transmission shaft (8) is fixedly connected with a second cam (10), a third fork frame (9) is arranged on the outer side of the second cam (10), and the third fork frame (9) is fixedly connected with a tooth lifting shaft (901).

6. The sewing machine feed lifting mechanism according to claim 5, wherein: the transmission shaft (8) is parallel to the feed lifting shaft (901).