CN220724502U - Lifting tooth structure of sewing machine - Google Patents

Abstract

The utility model provides a lifting tooth structure of a sewing machine, and belongs to the field of clothing sewing. The problem that the height adjusting range of the lifting tooth of the existing sewing machine is smaller is solved. The feed lifting structure of the sewing machine comprises a feed lifting unit, a feed feeding unit and a feed feeding unit, wherein the feed lifting unit comprises a feed lifting shaft, a transition shaft arranged below the feed lifting shaft in an inclined mode and a connecting rod mechanism used for connecting the feed lifting shaft and the transition shaft, a tooth frame is fixed below the feed feeding unit, and the tooth frame is provided with a first connecting part used for connecting the feed feeding unit, a second connecting part used for connecting the feed feeding unit and a third connecting part used for connecting the feed lifting unit. The utility model has the advantages of large height adjusting range of the lifting teeth, suitability for sewing various fabrics with different thicknesses, and difficulty in slipping or clamping the fabric.

Description

Lifting tooth structure of sewing machine

Technical Field

The utility model belongs to the field of clothing sewing, relates to a sewing machine, and in particular relates to a lifting tooth structure of the sewing machine.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on the sewing material to interweave or stitch one or more layers of sewing material, and is generally composed of a machine head, a machine seat, a transmission part and an accessory, wherein the transmission part is composed of a frame, a transmission part, a hand crank or a motor and the like.

In order to meet the diversified demands of sewing products in the market, sewing machine equipment manufacturers develop and manufacture various improved transmission modes, so that a sewing machine has diversified sewing material patterns, and can adapt to different types of sewing materials, for example, patent application number is 202122388189.4 disclosed in patent literature, the patent name is a feeding mechanism of the sewing machine and an utility model patent of the sewing machine with the feeding mechanism, the utility model discloses a feeding mechanism of the sewing machine and the sewing machine with the feeding mechanism, the feeding mechanism comprises a dental frame, a feed tooth and a needle plate, and also comprises a main shaft driving mechanism, wherein the main shaft driving mechanism is connected with one end of the dental frame and drives the dental frame to do reciprocating translational motion; the device also comprises a lifting tooth driving mechanism which is connected with the other end of the tooth frame; the lifting tooth driving mechanism comprises a lifting tooth driving motor, a lifting tooth crank and a lifting tooth shaft, wherein the lifting tooth crank comprises an upper connecting section, a middle connecting section and a lower connecting section, the upper connecting section is connected with the tooth frame, the middle connecting section is rotatably sleeved on the lifting tooth shaft, the lifting tooth shaft is parallel to a motor shaft of the lifting tooth driving motor, and the lower connecting section is connected with the lifting tooth driving motor. The structure improves the precision and stability of the sewing machine, but as the driving motor is additionally arranged below the lifting tooth shaft, the installation position of the lifting tooth shaft in the vertical direction is deviated, the height range of the lifting tooth action is reduced, the sewing machine is not suitable for sewing thicker cloth, and the problems of fabric slipping, thread clamping and the like are easily caused.

Therefore, a lifting structure of a sewing machine with a wide range of height adjustment of the lifting teeth is currently required.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a lifting tooth structure of a sewing machine with a larger lifting tooth height adjusting range.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a sewing machine lifts tooth structure, includes lifts the tooth unit, feed unit and pay-off tooth, its characterized in that, lift the tooth unit contain lift the tooth axle, set up in lifting the transition axle of tooth axle inclined below and be used for connecting and lift the link mechanism of tooth axle and transition axle, pay-off tooth below be fixed with the tooth frame, the tooth frame have be used for connecting the first connecting portion of feed unit, be used for connecting the second connecting portion of feed unit, and be used for connecting the third connecting portion of lifting the tooth unit.

In the above-mentioned structure of lifting the feed of sewing machine, the link mechanism include first swing seat, second swing seat and connecting rod, first swing seat one end be fixed in and lift the feed epaxially, second swing seat one end be fixed in on the transition axle, first swing seat be connected through the connecting rod with the second swing seat.

In the above-mentioned structure of lifting the thread of sewing machine, the cloth feeding unit comprises a cloth feeding shaft and a cloth feeding seat fixedly connected to one end of the cloth feeding shaft, and the other end of the cloth feeding seat is hinged to the first connecting part of the thread frame.

In the above-mentioned structure of lifting the teeth of a sewing machine, the lifting unit also has a lifting fork fixedly connected to one end of the transition shaft, the other end of the lifting fork is provided with a chute, a slider capable of moving back and forth along the extending direction of the chute is mounted in the chute, and the slider is fixedly connected with the third connecting part of the tooth frame.

Compared with the prior art, the lifting tooth structure of the sewing machine has the following advantages: through increasing a transition axle and connecting through link mechanism in lifting the tooth axle below, make the mounted position of tooth frame more lower than traditional structure, can not appear interfering with other spare parts when the tooth frame is done great range swing, and then improved the accommodation of lifting the tooth height, make the sewing machine can make the cloth of multiple different thickness, be difficult for causing the surface fabric to skid, problem such as card line.

Drawings

Fig. 1 is a schematic perspective view of a feed lifting structure of the sewing machine.

Fig. 2 is a schematic perspective view of a dental floss carrier.

Fig. 3 is a schematic perspective view of the link mechanism.

Fig. 4 is an enlarged partial schematic view of the attachment portion of the lifting fork.

In the figure, 1, a tooth lifting unit; 2. a cloth feeding unit; 3. feeding teeth; 4. a tooth lifting shaft; 5. a transition shaft; 6. a link mechanism; 7. a dental frame; 8. a first connection portion; 9. a second connecting portion; 10. a third connecting portion; 11. a first swing seat; 12. a second swing seat; 13. a connecting rod; 14. a cloth feeding shaft; 15. a cloth feeding seat; 16. lifting a tooth fork; 17. a chute; 18. a sliding block.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, 2, 3 and 4, the feed-lifting structure of the sewing machine comprises a feed-lifting unit 1, a feed-feeding unit 2 and a feed-feeding unit 3, wherein the feed-lifting unit 1 comprises a feed-lifting shaft 4, a transition shaft 5 arranged below the feed-lifting shaft 4 and a connecting rod mechanism 6 used for connecting the feed-lifting shaft 4 and the transition shaft 5, a feed-lifting frame 7 is fixed below the feed-feeding unit 3, and the feed-lifting frame 7 is provided with a first connecting part 8 used for connecting the feed-feeding unit 2, a second connecting part 9 used for connecting the feed-feeding unit 3 and a third connecting part 10 used for connecting the feed-lifting unit 1.

Preferably, the link mechanism 6 comprises a first swinging seat 11, a second swinging seat 12 and a link 13, one end of the first swinging seat 11 is fixed on the lifting tooth shaft 4, one end of the second swinging seat 12 is fixed on the transition shaft 5, and the first swinging seat 11 is connected with the second swinging seat 12 through the link 13.

Further, the cloth feeding unit 2 comprises a cloth feeding shaft 14 and a cloth feeding seat 15 fixedly connected to one end of the cloth feeding shaft 14, the other end of the cloth feeding seat 15 is hinged to the first connecting portion 8 of the dental frame 7, and the cloth feeding shaft 14 swings back and forth along the axis of the cloth feeding shaft to drive the other end of the cloth feeding seat 15 to swing synchronously, so that the dental frame 7 and the feeding teeth 3 fixed on the dental frame 7 are driven to reciprocate back and forth.

Further, the tooth lifting unit 1 is further provided with a tooth lifting fork 16 fixedly connected to one end of the transition shaft 5, a sliding groove 17 is formed in the other end of the tooth lifting fork 16, a sliding block 18 capable of moving back and forth along the extending direction of the sliding groove 17 is installed in the sliding groove 17, the sliding block 18 is fixedly connected with the third connecting portion 10 of the tooth rack 7, the tooth lifting shaft 4 swings back and forth along the axis of the tooth lifting shaft and can drive the other end of the tooth lifting fork 16 to swing synchronously through the transition shaft 5, and the sliding block 18 in the sliding groove 17 moves back and forth along the extending direction of the sliding groove 17 cooperatively, so that the tooth rack 7 and the feeding tooth 3 fixed on the tooth rack 7 can reciprocate up and down.

When the sewing machine works, a driving motor positioned above the sewing machine and a main shaft connected with the driving motor drive the cloth feeding shaft 14 and the lifting tooth shaft 4 to reciprocate, so as to drive the tooth frame 7 and the feeding tooth 3 connected with the tooth frame 7 to reciprocate back and forth; meanwhile, the feed lifting shaft 4 transmits the self reciprocating motion to the transition shaft 5 through the connecting rod mechanism 6, the transition shaft 5 drives the feed lifting fork 16 at the tail end of the transition shaft to synchronously swing, and the sliding block 18 in the feed lifting fork 16 is cooperated to reciprocate along the direction of the sliding groove 17, so that the tooth frame 7 and the feed feeding teeth 3 connected with the tooth frame 7 are driven to reciprocate up and down, and the sewing motion is realized by combining the forward and backward reciprocating motion and the up and down reciprocating motion of the feed feeding teeth 3 and the up and down reciprocating motion of a needle above the feed feeding teeth 3.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as the feed lifting unit 1, the feed feeding unit 2, the feed feeding unit 3, the feed lifting shaft 4, the transition shaft 5, the link mechanism 6, the frame 7, the first connection part 8, the second connection part 9, the third connection part 10, the first swing seat 11, the second swing seat 12, the link 13, the feed feeding shaft 14, the feed feeding seat 15, the feed lifting fork 16, the chute 17, the slider 18 are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims (4)

1. The utility model provides a sewing machine lifts tooth structure, includes lifts tooth unit (1), feed unit (2) and pay-off tooth (3), its characterized in that lifts tooth unit (1) contain lift tooth axle (4), set up in lifting the transition axle (5) of tooth axle (4) oblique below and be used for connecting lifting tooth axle (4) and connecting rod (13) mechanism (6) of transition axle (5), pay-off tooth (3) below be fixed with tooth frame (7), tooth frame (7) have be used for connecting first connecting portion (8) of feed unit (2), be used for connecting second connecting portion (9) of pay-off tooth (3), and be used for connecting third connecting portion (10) of lifting tooth unit (1).

2. The lifting tooth structure of the sewing machine according to claim 1, wherein the connecting rod (13) mechanism (6) comprises a first swinging seat (11), a second swinging seat (12) and a connecting rod (13), one end of the first swinging seat (11) is fixed on the lifting tooth shaft (4), one end of the second swinging seat (12) is fixed on the transition shaft (5), and the first swinging seat (11) is connected with the second swinging seat (12) through the connecting rod (13).

3. The lifting tooth structure of the sewing machine according to claim 1, wherein the cloth feeding unit (2) comprises a cloth feeding shaft (14) and a cloth feeding seat (15) fixedly connected to one end of the cloth feeding shaft (14), and the other end of the cloth feeding seat (15) is hinged to the first connecting part (8) of the tooth frame (7).

4. The lifting tooth structure of the sewing machine according to claim 1, wherein the lifting tooth unit (1) is further provided with a lifting tooth fork (16) fixedly connected to one end of the transition shaft (5), a sliding groove (17) is formed in the other end of the lifting tooth fork (16), a sliding block (18) capable of moving back and forth along the extending direction of the sliding groove (17) is installed in the sliding groove (17), and the sliding block (18) is fixedly connected with a third connecting portion (10) of the tooth frame (7).