CN214736592U

CN214736592U - Thread trimming, presser foot lifting and needle pitch adjusting integrated structure of sewing machine

Info

Publication number: CN214736592U
Application number: CN202120886755.1U
Authority: CN
Inventors: 阮善兵; 邱威铭; 肖锦阳; 王宇航
Original assignee: Zhejiang Xinshunfa Sewing Machine Technology Co ltd
Current assignee: Zhejiang Xinshunfa Sewing Machine Technology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-16
Anticipated expiration: 2031-04-27

Abstract

The utility model relates to a sewing machine's trimming, lift integrated configuration that presser foot and gauge needle were adjusted relates to a sewing machine, belongs to sewing equipment technical field, and it is including fixed main shaft, pay-off axle and the trimming axle in the shell, the outside of shell is provided with a motor, and the motor shaft of this motor stretches into and has cup jointed a multifunctional camshaft in the shell, be provided with the gauge needle adjusting disc on the multifunctional camshaft, lift presser foot cam and trimming cam, the gauge needle adjusting disc is connected with the pay-off axle through the gauge needle subassembly, lift presser foot cam and presser foot structural connection through lifting the presser foot subassembly, the trimming cam is connected with the trimming axle through the trimming subassembly, just it is located between gauge needle adjusting disc and the trimming cam to lift presser foot cam, the utility model aims at providing a simple structure can simplify sewing machine inner structure to lift trimming, presser foot and the trimming of the sewing machine of gauge needle set on an axis body, And the pressure foot lifting and the needle pitch adjusting are integrated.

Description

Thread trimming, presser foot lifting and needle pitch adjusting integrated structure of sewing machine

Technical Field

The utility model belongs to the technical field of sewing machine, a sewing machine is related to, refer in particular to a sewing machine's trimming, lift the integrated structure of presser foot and gauge needle regulation.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material to enable one or more layers of the sewing material to be interwoven or sewn, and the sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewn stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.

At present can need to use following three kinds of functions in sewing machine's use often, it is the function of trimming, lifting the presser foot and adjusting the gauge needle respectively, and present sewing machine realizes these three kinds of functions mostly through adopting a plurality of motors or multiple solitary structure for sewing machine is inside crowded impatiently, and leads to sewing machine's inner structure complicated, and transmission efficiency is lower.

Disclosure of Invention

The utility model aims at providing a simple structure can simplify sewing machine inner structure to with the trimming, lift the trimming of presser foot and the set of accent gauge needle sewing machine on an axis body, lift the integrated structure that presser foot and gauge needle were adjusted.

The purpose of the utility model is realized like this:

the integrated structure comprises a main shaft, a feeding shaft and a thread shearing shaft which are fixed in a shell, wherein a motor is arranged on the outer side of the shell, a multifunctional cam shaft is sleeved in the motor shaft of the motor, a thread distance adjusting disc, a thread lifting presser foot cam and a thread shearing cam are arranged on the multifunctional cam shaft, the thread distance adjusting disc is connected with the feeding shaft through a thread distance adjusting assembly, the thread lifting presser foot cam is connected with a thread shearing shaft through a thread lifting presser foot assembly, the thread shearing cam is connected with the thread shearing shaft through a thread shearing assembly, and the thread lifting presser foot cam is positioned between the thread distance adjusting disc and the thread shearing cam.

In the integrated structure of thread trimming, presser foot lifting and stitch length adjustment of the sewing machine, the stitch length adjusting component comprises a fixed shaft, a stitch length adjusting crank, a roller structure, a connecting plate and a swinging seat structure, one end of the fixed shaft is connected with the inner wall of the shell, the other end of the fixed shaft is fixed in the shell through a fixed seat, one end of the stitch length adjusting crank is sleeved in the fixed shaft, the other end of the stitch length adjusting crank is connected with one end of the connecting plate, the other end of the connecting plate is connected with the swinging seat structure, the swinging seat structure is connected with the feeding shaft through a connecting crank, the roller structure is arranged at the middle end part of the stitch length adjusting crank, and a chute for the roller structure to move inside is formed in the stitch length adjusting disc.

In the integrated structure of the thread trimming, the presser foot lifting and the stitch length adjusting of the sewing machine, the roller structure comprises a roller pin and a roller, the roller is of a hollow structure, and the roller is sleeved in the roller pin.

In the integrated structure of the thread trimming, the presser foot lifting and the stitch length adjusting of the sewing machine, the sliding groove is of a special-shaped structure.

In the integrated structure of trimming, presser foot lifting and stitch length adjustment of the sewing machine, the trimming assembly comprises a bearing shaft, a trimming swing seat and a trimming connecting rod, two bearing seats for fixing the bearing shaft are arranged on the shell, the bearing seats are respectively arranged at the left end and the right end of the bearing shaft, the trimming swing seat is sleeved in the bearing shaft, two ends of the trimming connecting rod are respectively connected with the trimming swing seat and the trimming shaft, the trimming cam is provided with the trimming crank, and the trimming crank can rotate in the trimming swing seat.

In the integrated structure of trimming, presser foot lifting and stitch length adjustment of the sewing machine, the trimming swing seat is of a hook-shaped structure and is respectively provided with a long hook and a short hook, one end of the trimming connecting rod is connected with the end part of the short hook through a pin shaft, and the other end of the trimming connecting rod is connected with the trimming shaft through a crank.

In the integrated structure of thread cutting, presser foot lifting and stitch length adjustment of the sewing machine, the inner side surface of the long hook is arc-shaped, and the thickness of the long hook is smaller than that of the short hook.

In the integrated structure of trimming, presser foot lifting and stitch length adjustment of the sewing machine, the presser foot lifting assembly comprises a pull rod frame, a swing plate, a first pull rod, an L-shaped pull plate and a second pull rod, the pull rod frame is fixed on the shell, one end of the swing plate is hinged on the pull rod frame, the other end of the swing plate is connected with one end of the first pull rod, the middle end of the L-shaped pull plate is hinged on the shell, the other end of the first pull rod is connected with one end of the L-shaped pull plate, the other end of the L-shaped pull plate is connected with the second pull rod, the second pull rod is connected with the presser foot structure, and the presser foot structure is provided with a reset spring.

In the integrated structure of the thread trimming, the presser foot lifting and the stitch length adjusting of the sewing machine, the middle end part of the swing plate is vertically provided with the limiting groove, and the pull rod frame is provided with the limiting rod matched with the limiting groove.

In the integrated structure of the thread cutting, the presser foot lifting and the stitch length adjusting of the sewing machine, the guide frame is formed on the pull rod frame in a bending mode, and the first pull rod penetrates through the guide frame and is connected with the swinging plate and the L-shaped pull plate respectively.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses can drive corresponding thread trimming mechanism, lift presser foot mechanism or the motion of accent needle pitch mechanism, carry out the thread trimming action, lift presser foot action or accent needle pitch action, realize the thread trimming promptly by a cam, lift the presser foot and three kinds of functions of accent needle pitch, can simplify the structure greatly, make simple structure compact, transmission efficiency is high, and stability is good.

Drawings

Fig. 1 is one of the schematic structural diagrams of the present invention;

fig. 2 is a second schematic structural diagram of the present invention;

fig. 3 is one of the schematic internal structural diagrams of the present invention;

fig. 4 is a second schematic view of the internal structure of the present invention;

FIG. 5 is a schematic view of the multi-function camshaft, gauge adjustment crank and roller arrangement of the present invention;

fig. 6 is a schematic structural view of the multifunctional camshaft of the present invention;

FIG. 7 is a schematic structural view of the tie bar bracket and the swing plate of the present invention;

fig. 8 is a schematic structural diagram of the trimming swing seat of the present invention.

The reference numerals in the figures denote the meanings:

1-a housing; 2-a main shaft; 3-a feeding shaft; 4-a shear spool; 5, a motor; 6-a multifunctional camshaft; 22-pendulum

A movable seat structure;

61-gauge dial; 62-lifting the presser foot cam; 63-trimming cam; 610-a fixed seat; 611-a fixed shaft;

612-a pitch adjusting crank; 613-roller structure; 614-connecting plate; 615-a chute; 621-a pull rod rack;

622-swing plate; 623-a first pull rod; 624-L-shaped pulling plate; 625-a second pull rod; 630-trimming crank;

631-a load bearing shaft;

632-trimming swing seat; 633-shear link; 6131-ball pin; 6132-roller; 6211-a guide frame; 6221-a limiting groove; 6222-a stop lever; 6321-long hook; 6322-short hook.

Detailed Description

The invention will be further described with reference to specific embodiments below:

as shown in fig. 1-8: an integrated structure of trimming, presser foot lifting and stitch length adjusting of a sewing machine comprises a main shaft 2, a feeding shaft 3 and a trimming shaft 4 fixed in a shell 1, wherein a motor 5 is arranged at the outer side of the shell 1, a multifunctional camshaft 6 is sleeved in the shell 1 by a motor shaft of the motor 5, a stitch length adjusting disc 61, a presser foot lifting cam 62 and a trimming cam 63 are arranged on the multifunctional camshaft 6, the stitch length adjusting disc 61 is connected with the feeding shaft 3 through a stitch length adjusting assembly, the presser foot lifting cam 62 is connected with the presser foot structure through the presser foot lifting assembly, the trimming cam 63 is connected with the trimming shaft 4 through the trimming assembly, the presser foot lifting cam 62 is positioned between the stitch length adjusting disc 61 and the trimming cam 63, and a feeding connecting rod is arranged between the main shaft and the feeding shaft, the utility model can drive a corresponding trimming mechanism, presser foot mechanism or stitch length adjusting mechanism to move, the thread trimming device performs thread trimming, presser foot lifting or needle pitch adjusting, namely, three functions of thread trimming, presser foot lifting and needle pitch adjusting are realized by one cam, so that the structure can be greatly simplified, the structure is simple and compact, the transmission efficiency is high, and the stability is good.

In the above-mentioned integrated structure of trimming, presser foot lifting and stitch length adjustment of the sewing machine, the stitch length adjusting assembly includes a fixed shaft 611, a stitch length adjusting crank 612, a roller structure 613, a connecting plate 614 and a swing seat structure 22, one end of the fixed shaft 611 is connected with the inner wall of the housing 1, the other end is fixed in the housing 1 through a fixing seat 610, one end of the stitch length adjusting crank 612 is sleeved in the fixed shaft 611, the other end is connected with one end of the connecting plate 614, the other end of the connecting plate 614 is connected with the swing seat structure 22, the swing seat structure 22 is connected with the feeding shaft 3 through a connecting crank, the roller structure 613 is arranged at the middle end of the stitch length adjusting crank 612, a chute 615 for the roller structure 613 to move inside is arranged on the stitch length adjusting plate 61, two ends of the fixed shaft are respectively connected with the housing and the fixing seat, and two ends are fixed to avoid one-side bending of the fixed shaft, and the cover is equipped with the latch segment on the fixed axle, guarantees the gauge needle like this and adjusts the position of crank at fixed epaxial, the utility model discloses a limiting plate then can not produce not hard up in order to guarantee the connecting plate, avoids the connecting plate to break away from the possibility of gauge needle adjusting crank and swinging seat structure from the source.

In the integrated structure of thread trimming, presser foot lifting and stitch length adjustment of the sewing machine, the roller structure 613 includes a ball pin 6131 and a roller 6132, the roller 6132 is a hollow structure, the roller 6132 is sleeved in the ball pin 6131, the chute 615 is a special-shaped structure, and the designed ball pin and roller are used for facilitating the connection of the stitch length adjusting crank and the stitch length adjusting disk and facilitating the position adjustment of the stitch length adjusting crank.

In the integrated configuration that the trimming of foretell sewing machine, lift presser foot and gauge needle were adjusted, the trimming subassembly includes bearing axle 631, trimming swing seat 632 and trimming connecting rod 633, be provided with the bearing seat 634 that two places were used for fixed bearing axle 631 on the shell 1, bearing seat 634 is located bearing axle 631 both ends about respectively, trimming swing seat 632 cover is established in bearing axle 631, just the both ends of trimming connecting rod 633 are connected with trimming swing seat 632 and trimming axle 4 respectively, be provided with trimming crank 630 on the trimming cam 63, trimming crank 630 can be rotary motion in trimming swing seat 632, the utility model discloses a fixing base is located the both ends of bearing axle, avoids the probability that bearing axle warp through the length that shortens bearing axle.

In the above-mentioned integrated structure of thread cutting, presser foot lifting and stitch length adjustment of the sewing machine, the thread cutting swing seat 632 is a hook-shaped structure, which is respectively provided with a long hook 6321 and a short hook 6322, one end of the thread cutting connecting rod 633 is connected with the end of the short hook 6322 through a pin shaft, the other end thereof is connected with the thread cutting shaft 4 through a crank, the inner side surface of the long hook 6321 is arc-shaped, the thickness dimension of the long hook 6321 is smaller than that of the short hook 6322, specifically, the bearing shaft is a step shaft structure, after passing through the thread cutting swing seat, one side surface of the bearing shaft abuts against the thread cutting swing seat, the bearing shaft comprises a large end connecting section and a small end connecting section, an external thread is provided on the large end connecting section or the small end connecting section, an internal thread adapted to the external thread is provided in the fixing seat, specifically, the thread on the bearing shaft is generally provided on the large end connecting section, can guarantee like this that bearing shaft and fixing base are connected stability, it is concrete, long collude mainly to play the guide effect, and short colludes and bears trimming crank pivoted power.

In the integrated structure of thread trimming, presser foot lifting and stitch length adjustment of the sewing machine, the presser foot lifting assembly includes a pull rod holder 621, a swing plate 622, a first pull rod 623, an L-shaped pull plate 624 and a second pull rod 625, the pull rod holder 621 is fixed on the housing, one end of the swing plate 622 is hinged on the pull rod holder 621, the other end thereof is connected with one end of the first pull rod 623, the middle end of the L-shaped pull plate 624 is hinged on the housing 1, the other end of the first pull rod 623 is connected with one end of the L-shaped pull plate 624, the other end of the L-shaped pull plate 624 is connected with the second pull rod 625, the second pull rod 625 is connected with the presser foot structure, and the presser foot structure is provided with a return spring.

In the above-mentioned integrated structure of thread trimming, presser foot lifting and stitch length adjustment of the sewing machine, the middle end of the swing plate 622 is vertically provided with a limit groove 6221, and the pull rod frame 621 is provided with a limit rod 6222 adapted to the limit groove 6221.

In the above-mentioned integrated structure of the thread trimming, the presser foot lifting and the stitch length adjustment of the sewing machine, the guide frame 6211 is formed on the pull rod frame 621 in a bending manner, and the first pull rod 623 penetrates through the guide frame 6211 and then is respectively connected with the swing plate 622 and the L-shaped pull plate 624.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an integrated structure that sewing machine's trimming, lift presser foot and gauge needle were adjusted which characterized in that: the thread trimming device comprises a main shaft (2), a feeding shaft (3) and a thread trimming shaft (4) which are fixed in a shell (1), wherein a motor (5) is arranged on the outer side of the shell (1), a motor shaft of the motor (5) extends into the shell (1) and is sleeved with a multifunctional cam shaft (6), a needle distance adjusting disc (61), a presser foot lifting cam (62) and a thread trimming cam (63) are arranged on the multifunctional cam shaft (6), the needle distance adjusting disc (61) is connected with the feeding shaft (3) through a needle distance adjusting assembly, the presser foot lifting cam (62) is connected with a presser foot structure through a presser foot lifting assembly, the thread trimming cam (63) is connected with the thread trimming shaft (4) through the thread trimming assembly, and the presser foot lifting cam (62) is located between the needle distance adjusting disc (61) and the thread trimming cam (63).

2. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 1, characterized in that: the needle distance adjusting assembly comprises a fixing shaft (611), a needle distance adjusting crank (612), a roller structure (613), a connecting plate (614) and a swinging seat structure (22), one end of the fixing shaft (611) is connected with the inner wall of the shell (1), the other end of the fixing shaft is fixed in the shell (1) through a fixing seat (610), one end of the needle distance adjusting crank (612) is sleeved into the fixing shaft (611), the other end of the needle distance adjusting crank is connected with one end of the connecting plate (614), the other end of the connecting plate (614) is connected with the swinging seat structure (22), the swinging seat structure (22) is connected with the feeding shaft (3) through a connecting crank, the roller structure (613) is arranged at the middle end part of the needle distance adjusting crank (612), and a sliding groove (615) for the roller structure (613) to move inside is formed in the needle distance adjusting disc (61).

3. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 2, characterized in that: the roller structure (613) comprises a roller pin (6131) and a roller (6132), the roller (6132) is of a hollow structure, and the roller (6132) is sleeved in the roller pin (6131).

4. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 2, characterized in that: the sliding groove (615) is of a special-shaped structure.

5. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 1, characterized in that: the trimming subassembly includes bearing axle (631), trimming swing seat (632) and trimming connecting rod (633), be provided with bearing seat (634) that two departments are used for fixed bearing axle (631) on shell (1), both ends about bearing seat (634) is located bearing axle (631) respectively, trimming swing seat (632) cover is established in bearing axle (631), just the both ends of trimming connecting rod (633) are connected with trimming swing seat (632) and trimming axle (4) respectively, be provided with trimming crank (630) on trimming cam (63), rotary motion can be done in trimming swing seat (632) to trimming crank (630).

6. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 5, wherein: trimming swing seat (632) are colluding the shape structure, and it is provided with long colluding (6321) and short colluding (6322) respectively, the one end of trimming connecting rod (633) is connected with the tip of short colluding (6322) through the round pin axle, and its other end is connected with trimming axle (4) through the crank.

7. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 6, wherein: the inner side surface of the long hook (6321) is arc-shaped, and the thickness of the long hook (6321) is smaller than that of the short hook (6322).

8. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 1, characterized in that: the presser foot lifting assembly comprises a pull rod frame (621), a swinging plate (622), a first pull rod (623), an L-shaped pull plate (624) and a second pull rod (625), the pull rod frame (621) is fixed on the shell, one end of the swinging plate (622) is hinged to the pull rod frame (621), the other end of the swinging plate (622) is connected with one end of the first pull rod (623), the middle end of the L-shaped pull plate (624) is hinged to the shell (1), the other end of the first pull rod (623) is connected with one end of the L-shaped pull plate (624), the other end of the L-shaped pull plate (624) is connected with the second pull rod (625), the second pull rod (625) is connected with the presser foot structure, and a reset spring is arranged on the presser foot structure.

9. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 8, wherein: the middle end of the swing plate (622) is vertically provided with a limit groove (6221), and the pull rod frame (621) is provided with a limit rod (6222) matched with the limit groove (6221).

10. The integrated structure of trimming, presser foot lifting and stitch length adjustment of a sewing machine according to claim 9, wherein: the pull rod rack (621) is bent and formed with a guide rack (6211), and the first pull rod (623) penetrates through the guide rack (6211) and then is respectively connected with the swinging plate (622) and the L-shaped pull plate (624).