CN214694594U

CN214694594U - Cloth feeding adjusting device of sewing machine

Info

Publication number: CN214694594U
Application number: CN202021800311.3U
Authority: CN
Inventors: 卢律何
Original assignee: Zhejiang Guanghe Sewing Machine Co ltd
Current assignee: Zhejiang Guanghe Sewing Machine Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2021-11-12
Anticipated expiration: 2030-08-25

Abstract

The utility model provides a sewing machine's work feed adjusting device belongs to sewing machine technical field. The problem that the feeding needle size of an existing sewing machine can be changed when cloth feeding teeth are adjusted is solved. The cloth feeding adjusting device of the sewing machine comprises a cloth feeding motor, a cloth feeding shaft, a cloth feeding seat, cloth feeding teeth, a controller and a four-rod adjusting mechanism arranged between the cloth feeding motor and the cloth feeding shaft, wherein the four-rod adjusting mechanism comprises a motor shaft, a rocker, a connecting rod and a crank of the cloth feeding motor, the crank is fixedly connected to the motor shaft, the rocker is fixedly connected to the cloth feeding shaft, and the rocker and the crank are connected through the connecting rod. The feeding track of the cloth feeding teeth is synthesized by the up-and-down motion controlled by the rocker arm and the horizontal motion controlled by the cloth feeding seat, the up-and-down motion and the sewing machine main shaft have a fixed motion law, the track of the cloth feeding teeth can be changed by controlling the time sequence of the cloth feeding motor, and the single sewing machine can be used for corresponding sewing cloth with different thicknesses.

Description

Cloth feeding adjusting device of sewing machine

Technical Field

The utility model belongs to the technical field of sewing machine, a sewing machine's work feed device is related to, in particular to sewing machine's work feed adjusting device.

Background

At present sewing machine in the use, need use different kinds of sewing cloth, different thickness can appear in these cloths, different smoothness, for make the cloth have better smoothness nature in sewing process, in current sewing machine operation process, often adopt the mode of adjusting the height of cloth feeding tooth to deal with these problems, but the method of adjusting cloth feeding tooth can change the pay-off needle sign indicating number, and it is inconvenient to adjust.

Disclosure of Invention

The utility model aims at solving the problems in the prior art and providing a cloth feeding adjusting device of a sewing machine.

The purpose of the utility model can be realized by the following technical proposal: a cloth feeding adjusting device of a sewing machine comprises a cloth feeding motor, a cloth feeding shaft, a cloth feeding seat, cloth feeding teeth and a controller and is characterized by further comprising a four-rod adjusting mechanism arranged between the cloth feeding motor and the cloth feeding shaft, wherein the four-rod adjusting mechanism comprises a motor shaft, a rocker, a connecting rod and a crank of the cloth feeding motor, the crank is fixedly connected to the motor shaft, the rocker is fixedly connected to the cloth feeding shaft, and the rocker and the crank are connected through the connecting rod.

The cloth feeding motor drives the four-rod adjusting mechanism to drive the cloth feeding seat, and the timing sequence and amplitude of the cloth feeding seat can be controlled by controlling the motor to realize the change of the trace of the cloth feeding teeth.

In the cloth feeding adjusting device of the sewing machine, the rocker is fixedly connected to the rear end of the cloth feeding shaft, the front end of the cloth feeding shaft is fixedly connected with the cloth feeding seat, the cloth feeding seat is connected with the tooth frame, the tooth frame is fixedly connected with the cloth feeding teeth, and the cloth feeding teeth are matched with the cloth feeding seat.

The cloth feeding adjusting device of the sewing machine further comprises a lifting tooth long shaft driven by the sewing machine main shaft to reciprocate, a rocker arm is fixedly connected to the lifting tooth long shaft, one end of the tooth frame is hinged to the cloth feeding seat, and the other end of the tooth frame is hinged to the rocker arm.

In the cloth feeding adjusting device of the sewing machine, the cloth feeding motor is a stepping motor fixedly connected to a shell of the sewing machine, the cloth feeding motor is connected with the controller, and the controller adjusts the motion sequence and the rotation angle.

The cloth feeding adjusting device of the sewing machine further comprises a detector for detecting the thickness of the cloth, the detector is connected with the controller, and the controller adjusts the trajectory of the cloth feeding teeth according to the detection result after detecting the thickness of the cloth.

In the cloth feeding adjusting device of the sewing machine, a base plate of the sewing machine is provided with a first hole site and a second hole site, the first hole site is concentrically matched with a cloth feeding shaft, and the second hole site is concentrically matched with a long shaft of the feed lifting teeth.

In the cloth feeding adjusting device of the sewing machine, two ends of the connecting rod are respectively provided with a third hole site and a fourth hole site, the third hole site is concentrically matched with the fifth hole site on the crank, and the fourth hole site is concentrically matched with the sixth hole site on the rocker.

Compared with the prior art, the utility model discloses synthesize the up-and-down motion of rocking arm control and the horizontal motion of work feed seat control into the pay-off orbit of work feed tooth, and up-and-down motion and sewing machine main shaft have fixed motion law, through the control chronogenesis to the work feed motor, can change the orbit of work feed tooth, can realize that single sewing machine corresponds the sewing cloth of different thickness.

Drawings

Fig. 1 is a schematic view of a sewing machine according to the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic structural diagram of the four-bar adjusting mechanism of the present invention.

Fig. 4 is a schematic diagram of the movement track of the cloth feeding teeth of the present invention.

Fig. 5 is a control schematic diagram of the present invention for sewing the cloth with the boss.

In the figure, 1, a cloth feeding motor; 101. a motor shaft; 2. a rocker; 201. a hole position six; 3. a cloth feeding shaft; 4. a crank; 401. hole site five; 5. a connecting rod; 501. hole site three; 502. a hole site four; 6. a long shaft of the lifting tooth; 7. a cloth feeding tooth; 8. a needle plate; 9. a rocker arm; 10. a cloth feeding seat; 11. a dental articulator; 12. a housing; 13. a base plate; 1301. a first hole position; 1302. and a second hole site.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Referring to fig. 1-3, the present embodiment is a cloth feeding adjusting device of a sewing machine, including a cloth feeding motor 1, a cloth feeding shaft 3, a cloth feeding seat 10, a cloth feeding tooth 7, a long lifting tooth shaft 6 and a controller, and is characterized by further including a four-bar adjusting mechanism arranged between the cloth feeding motor 1 and the cloth feeding shaft 3, where the four-bar adjusting mechanism includes a motor shaft 101 of the cloth feeding motor 1, a rocker 2, a connecting rod 5 and a crank 4, the crank 4 is fixedly connected to the motor shaft 101, the rocker 2 is fixedly connected to the cloth feeding shaft 3, and the rocker 2 and the crank 4 are connected through the connecting rod 5, specifically, a base plate 13 of the sewing machine has a first hole site 1301 and a second hole site 1302, the first hole site 1301 is concentrically matched with the cloth feeding shaft 3, and the second hole site 1302 is concentrically matched with the long lifting tooth shaft 6; two ends of the connecting rod 5 are respectively provided with a hole site three 501 and a hole site four 502, the hole site three 501 is concentrically matched with a hole site five 401 on the crank 4, and the hole site four 502 is concentrically matched with a hole site six 201 on the rocker 2; the rocker 2 is fixedly connected with the rear end of the cloth feeding shaft 3, the front end of the cloth feeding shaft 3 is fixedly connected with a cloth feeding seat 10, a tooth frame 11 is connected onto the cloth feeding seat 10, a cloth feeding tooth 7 is fixedly connected onto the tooth frame 11, and the cloth feeding tooth 7 is matched with the cloth feeding seat 10. The feed lifting tooth long shaft 6 is driven by a sewing machine main shaft to do reciprocating motion, a rocker arm 9 is fixedly connected to the feed lifting tooth long shaft 6, one end of a tooth rack 11 is hinged to a cloth feeding seat 10, and the other end of the tooth rack is hinged to the rocker arm 9.

Preferably, the cloth feeding motor 1 is a stepping motor fixedly connected to a machine shell 12 of the sewing machine, the cloth feeding motor 1 is connected with a controller, and the controller adjusts the motion time sequence and the rotation angle.

Preferably, the sewing machine is also provided with a detector for detecting the thickness of the cloth, the detector is connected with the controller, and the controller adjusts the track of the cloth feeding teeth 7 according to the detection result after detecting the thickness of the cloth.

The working principle of the embodiment is as follows: the sewing machine main shaft drives the feed lifting tooth long shaft 6 to do reciprocating motion, the rocker arm 9 fixed on the feed lifting tooth long shaft 6 does up-and-down reciprocating motion, and finally up-and-down reciprocating motion of the cloth feeding tooth 7 is realized, and the up-and-down reciprocating motion and the sewing machine main shaft are in one-to-one correspondence; the power of the cloth feeding shaft 3 comes from the cloth feeding motor 1, the cloth feeding motor 1 drives the crank 4 to swing according to the preset corresponding relation and drives the rocker 2 to swing through the connecting rod 5, so that the cloth feeding seat 10 is controlled to swing, and the horizontal movement action of the cloth feeding teeth 7 is finally completed; the up-and-down movement controlled by the rocker arm 9 and the horizontal movement controlled by the cloth feeding seat 10 are combined into a feeding track of the cloth feeding teeth 7. The up-and-down motion of the cloth feeding teeth 7 and the main shaft of the sewing machine have a fixed motion rule, and the trajectory of the cloth feeding teeth 7 can be changed by controlling the control time sequence of the cloth feeding motor 1 through the controller, so that the motion trajectory of the cloth feeding teeth 7 is elliptic, rectangular or triangular. As shown in figure 4, the track No. 1 is adopted in common sewing, and the track No. 2 can be used only when the cloth ratio of the sewing machine is thicker, so that the sewing working condition can be better adapted, and the track No. 3 or 4 can be adopted under other working conditions. As shown in figure 5, the sewing adaptation method under the condition of sewing the boss is characterized in that under the condition that a sewing machine controller senses the cloth boss, the cloth feeding teeth 7 are adjusted to be No. 2 tracks from the original tracks, better cloth feeding force is obtained, the sewing quality is improved, and after the cloth boss disappears, the cloth feeding teeth 7 are switched to be the preset tracks.

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 may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A cloth feeding adjusting device of a sewing machine comprises a cloth feeding motor (1), a cloth feeding shaft (3), a cloth feeding seat (10), cloth feeding teeth (7) and a controller, and is characterized by further comprising a four-bar adjusting mechanism arranged between the cloth feeding motor (1) and the cloth feeding shaft (3), wherein the four-bar adjusting mechanism comprises a motor shaft (101) of the cloth feeding motor (1), a rocker (2), a connecting rod (5) and a crank (4), the crank (4) is fixedly connected onto the motor shaft (101), the rocker (2) is fixedly connected onto the cloth feeding shaft (3), the rocker (2) and the crank (4) are connected through the connecting rod (5), the rocker (2) is fixedly connected onto the rear end of the cloth feeding shaft (3), the front end of the cloth feeding shaft (3) is fixedly connected with the cloth feeding seat (10), the cloth feeding seat (10) is connected with a tooth rack (11), and the tooth rack (11) is fixedly connected with the cloth feeding teeth (7), the cloth feeding tooth (7) is matched with the cloth feeding seat (10), the cloth feeding tooth further comprises a long lifting tooth shaft (6) which is driven by a sewing machine spindle to do reciprocating motion, a rocker arm (9) is fixedly connected onto the long lifting tooth shaft (6), one end of a tooth rack (11) is hinged onto the cloth feeding seat (10), the other end of the tooth rack is hinged onto the rocker arm (9), the cloth feeding motor (1) is a stepping motor fixedly connected onto a machine shell (12) of the sewing machine, the cloth feeding motor (1) is connected with a controller, the motion time sequence and the rotation angle are adjusted by the controller, a base plate (13) of the sewing machine is provided with a first hole site (1301) and a second hole site (1302), the first hole site (1301) is in concentric fit with the cloth feeding shaft (3), and the second hole site (1302) is in concentric fit with the long lifting tooth shaft (6).

2. The cloth feeding adjusting device of sewing machine according to claim 1, characterized by further comprising a detector for detecting the thickness of the cloth, the detector being connected to a controller, the controller adjusting the trajectory of the cloth feeding teeth (7) according to the detection result after detecting the thickness of the cloth.

3. Cloth feed adjusting device of sewing machine according to claim 1, characterized in that the two ends of the connecting rod (5) are respectively provided with hole site three (501) and hole site four (502), the hole site three (501) is concentrically fitted with hole site five (401) on the crank (4), and the hole site four (502) is concentrically fitted with hole site six (201) on the rocker (2).