CN210151359U - Sewing machine's gauge needle adjusts structure - Google Patents
Sewing machine's gauge needle adjusts structure Download PDFInfo
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- CN210151359U CN210151359U CN201920440172.9U CN201920440172U CN210151359U CN 210151359 U CN210151359 U CN 210151359U CN 201920440172 U CN201920440172 U CN 201920440172U CN 210151359 U CN210151359 U CN 210151359U
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Abstract
The utility model provides a structure is adjusted to sewing machine's gauge needle belongs to clothing manufacture equipment technical field. The needle pitch adjusting mechanism solves the technical problems of complex assembly, high noise and the like of the needle pitch adjusting mechanism of the existing sewing machine. The sewing machine comprises a bottom plate, the needle distance adjusting structure comprises a driver and a swinging seat, the driver and the swinging seat are arranged at the bottom of the bottom plate, a connecting shaft is fixedly connected to the output shaft of the driver in the circumferential direction, the driver can drive the connecting shaft to rotate, a swinging crank is fixedly arranged on the connecting shaft, the outer end of the swinging crank extends along the radial direction of the connecting shaft, the outer end of the swinging crank is connected with the swinging seat through a connecting rod, and the connecting rod can drive the swinging seat to swing. The utility model provides a needle pitch is adjusted structure assembly is simple, reliable and stable and can effectively reduce the production of noise.
Description
Technical Field
The utility model belongs to the technical field of the clothing manufacture equipment, a sewing machine, especially a sewing machine's gauge needle is adjusted structure is related to.
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. Some sewing machines on the existing market can not form effective self-locking because the stitch length can not be adjusted when finishing sewing, and the bottom thread and the upper thread end of a thread fall off easily when being pulled, and when finishing trimming after sewing, the end of a thread left on a sewing material can be long and short, which affects the attractiveness of stitches. For example, in a flat seaming machine, because the thread end of the chain stitch is loose after the sewing or sewing, the whole stitch is easy to be loose during water washing or subsequent processing, and the quality of the clothes is affected. Some sewing machines in the market at present are provided with a needle pitch adjusting structure so as to adapt to different needle pitch requirements caused by different sewing materials, sewing methods and other reasons, for example, the needle pitch of a flat seam sewing machine is adjusted through a dial and a needle pitch adjuster, and the adjustment is required when the sewing is stopped, which is not very convenient.
For example, Chinese patent (publication No. CN108611769A, published: 2018-10-02) discloses a sewing machine, which comprises a needle pitch adjusting stud, an adjuster shaft and a needle pitch adjuster fixed on the adjuster shaft, wherein the upper end of a reverse feeding connecting rod is connected to the needle pitch adjuster, the lower end of the reverse feeding connecting rod is connected to a swinging seat, the swinging seat is arranged on a bottom plate in a swinging mode through two positioning pins, a sliding groove is formed in the middle of the reverse feeding connecting rod, one end of a reverse sewing wrench crank is connected with the sliding groove in a sliding mode, the other end of the reverse sewing wrench crank is connected with a reverse sewing wrench shaft, the reverse sewing wrench shaft is connected with a reverse sewing electromagnet through a reverse sewing electromagnet crank, the reverse sewing electromagnet drives the reverse sewing wrench shaft to rotate, and the middle of the reverse feeding connecting rod or the middle of the reverse sewing wrench crank is connected with the bottom plate through a reset tension.
In the patent document, the angle of the swing seat is changed by adjusting the feeding distance of the stud in the front and back directions, so that the needle pitch is changed; the automatic reverse feeding rod set is driven to move by the reverse sewing electromagnet to drive the swing seat to swing so as to realize reverse sewing, so that the adjustment and the use are inconvenient, the movement is not accurate and reliable enough, and the noise is large; in addition, each transmission structure is not accurate and reliable enough, and the installation and the connection are inconvenient.
Disclosure of Invention
The utility model discloses to the above-mentioned problem that prior art exists, provide a sewing machine's gauge needle and adjust structure, the utility model aims to solve the technical problem that: how to provide a needle pitch adjusting structure which is simple and reliable in assembly and can change the needle pitch during sewing.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a structure is adjusted to sewing machine's gauge needle, sewing machine includes the bottom plate, the gauge needle is adjusted the structure and is in including setting up the driver and the swing seat of bottom plate bottom, its characterized in that, circumference has linked firmly the connecting axle just on the output shaft of driver the driver can drive the connecting axle rotates, swing crank has set firmly on the connecting axle, swing crank's outer end is followed the radial direction of connecting axle extends just swing crank's outer end with be connected through the connecting rod between the swing seat, the connecting rod can drive the swing seat swings.
The principle is as follows: the swing seat is connected with a feeding shaft in the sewing machine, the feeding shaft is connected with the tooth frame assembly, during use, the connecting shaft is driven to rotate through the driver, the connecting shaft rotates to drive the swing crank to swing, then the swing seat is driven to move through a connecting rod hinged with one end of the swing crank, and the change of the needle pitch is realized through changing the angle of the swing seat.
When the needle pitch of 0 is needed, the swinging crank is parallel to the vertical surface, the swinging seat forms an angle a with the horizontal surface, and finally the condition of the needle pitch of 0 is formed; when the swinging crank is positioned at the position forming an angle B with the vertical plane, the swinging seat swings to the position forming an angle B with the horizontal plane, and finally the condition of the maximum forward sewing needle distance is formed; when the swinging crank is positioned at the position forming an angle C with the vertical plane, the swinging seat swings to the position forming an angle C with the horizontal plane, and finally the condition of the maximum backstitch needle distance is formed. Similarly, when the swing crank is positioned between the angles B-0-C, the swing seat can be driven to be positioned between the angles B-a-C, so that any needle pitch from the maximum forward sewing to the maximum backward sewing is realized, and the needle pitch adjusting precision of the needle pitch adjusting mechanism is related to the step angle of the driver and the arm length of the swing crank.
The driver is fixed in the bottom of bottom plate among this technical scheme, can avoid like this the whole length or the width that the driver influences the machine, compares in other positions, also realizes grease proofing more easily.
In the technical scheme, the adjustment of the positive and negative sewing and the stitch length can be controlled by one driving source, is not influenced by the working state and can be adjusted at any time; the connecting structure between the driver and the swing seat is simple and reliable, the assembling space is increased, the limitation of the assembling space on the size of the part is properly relaxed, the processing difficulty of the part is reduced, the manual assembling difficulty is reduced to a great extent, the manufacturing cost is saved, and the production benefit is improved; meanwhile, the needle pitch adjusting structure greatly reduces noise generated during needle pitch adjustment, improves the surrounding environment, reduces pressure intensity born by a contact surface, reduces impact force generated by member collision and prolongs the service life of parts on the premise of ensuring that the needle pitch adjusting function is not influenced.
In the needle pitch adjusting structure of the sewing machine, the bottom of the base plate is provided with the boss, the middle of the boss is provided with the mounting groove, the driver is fixedly arranged on the outer side of the boss, the swinging seat and the connecting shaft are positioned in the mounting groove of the boss, the groove wall of the mounting groove is provided with the mounting through hole, and the outer end of the output shaft of the driver is inserted in the mounting through hole.
In the stitch length adjusting structure of the sewing machine, the driver is a stepping motor, a connecting sleeve is arranged at the joint of an output shaft of the stepping motor and the connecting shaft, the connecting sleeve is fixed at the mounting through hole of the boss, and the output shaft of the stepping motor and the connecting shaft are rotatably inserted in the connecting sleeve.
In the stitch length adjusting structure of the sewing machine, the swing seat is U-shaped, pin holes are formed in the middle of two sides of the swing seat, and the bottom plate is provided with bolts inserted into the pin holes. The swing seat can swing around the pin hole. The swing seat can directly use the structure in the prior art.
In the stitch length adjusting structure of the sewing machine, one side of the swing seat is provided with a connecting part, the connecting rod is in a long strip plate shape, one end of the connecting rod is hinged with the outer end of the connecting part through an axial position screw, and the other end of the connecting rod is hinged with the outer end of the swing crank through a pin.
In foretell sewing machine's gauge needle regulation structure, the connecting axle with step motor's output shaft all is rectangular cylinder shaft shape and both diameters are the same, the one end of connecting axle has the connecting portion one that forms after getting rid of one section semicircle post, step motor's output shaft outer end have with connecting portion two that the corresponding matching of connecting portion one. The first connecting part and the second connecting part are in a complementary relation, and are combined to form a complete cylinder and then fixed through the connecting sleeve, so that circumferential fixed connection is formed, the connection is stable and reliable, and the assembly is simple.
In the stitch length adjusting structure of the sewing machine, the connecting shaft is in the shape of a long cylindrical rod, a groove is formed in one end of the connecting shaft inwards along the axial direction of the connecting shaft from the end face, two sides of the groove penetrate through two side faces of the connecting shaft, the outer end of an output shaft of the stepping motor is provided with a flat inserting portion, the inserting portion is inserted into the groove, and planes on two sides of the inserting portion are attached to the side faces of the groove. The structure can be conveniently and quickly assembled, and the stability and the reliability of the connection of the output shaft of the connecting shaft stepping motor are ensured.
Compared with the prior art, the utility model provides a have following advantage:
1. the utility model provides a driver is fixed in the bottom of bottom plate, can avoid the driver to influence the whole length or the width of machine like this, compares in other positions, also realizes grease proofing more easily.
2. The utility model discloses in just can control just backstitch and the regulation of gauge needle (like close stitch etc.) through a driving source, and do not receive operating condition's influence, can adjust at any time.
3. The utility model provides a connection structure between driver and the swing seat is simple reliable, has increased the assembly space, has suitably relaxed the installation space to the restriction of part size, has reduced the processing degree of difficulty of part, and to a great extent has reduced the manual assembly degree of difficulty, has improved the productivity effect.
4. The utility model provides a needle pitch is adjusted the structure and under having guaranteed the unaffected prerequisite of needle pitch regulatory function, great reduction the noise that produces when the needle pitch is adjusted, improved all ring edge borders, also reduced the pressure that the contact surface bore, reduced the impact force that the member collision produced, improved the life of part.
5. The utility model provides a needle pitch is adjusted the structure and is passed through the structural shape who optimizes driver output shaft and connecting axle to through setting up the adapter sleeve, make the assembly simpler, use reliable and stable.
Drawings
Fig. 1 is a schematic view of the installation and use structure of the needle pitch adjusting structure.
Fig. 2 is a schematic perspective view of the present pitch adjustment structure.
Fig. 3 is a schematic structural view of the present pitch adjustment structure in the "0" pitch state.
Fig. 4 is a schematic structural view of the needle pitch adjusting structure in the state of the maximum needle pitch of the down stitch.
FIG. 5 is a schematic view of the present stitch length adjusting structure in a backstitch maximum stitch length state.
Fig. 6 is a partial structural schematic view of the present pitch adjustment structure.
Fig. 7 is a schematic structural diagram of a stepping motor in the pitch adjustment structure according to the first embodiment.
Fig. 8 is a schematic structural view of a connecting shaft in the pitch adjustment structure according to the first embodiment.
Fig. 9 is a schematic view of a connection structure between a connection shaft and an output shaft of a stepping motor in the pitch adjustment structure according to the second embodiment.
In the figure, 1, a bottom plate; 1a, a boss; 1b, mounting grooves; 2. a swing seat; 2a, pin holes; 2b, a connecting part; 3. a connecting shaft; 3a, a first connecting part; 3b, a groove; 4. connecting sleeves; 5. a driver; 51. a stepping motor; 51a and a second connecting part; 51b, a plug part; 6. a swing crank; 7. a connecting rod; 8. an axial screw; 9. a pin.
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.
Example one
As shown in fig. 1 and 2, the sewing machine comprises a bottom plate 1, a stitch length adjusting structure comprises a driver 5 and a swinging seat 2 which are arranged at the bottom of the bottom plate 1, an output shaft of the driver 5 is circumferentially and fixedly connected with a connecting shaft 3, the driver 5 can drive the connecting shaft 3 to rotate, a swinging crank 6 is fixedly arranged on the connecting shaft 3, the outer end of the swinging crank 6 extends along the radial direction of the connecting shaft 3, the outer end of the swinging crank 6 is connected with the swinging seat 2 through a connecting rod 7, and the connecting rod 7 can drive the swinging seat 2 to swing; further, the bottom of the base plate 1 is provided with a boss 1a, the middle of the boss 1a is provided with a mounting groove 1b, the driver 5 is fixedly arranged on the outer side of the boss 1a, the swinging seat 2 and the connecting shaft 3 are positioned in the mounting groove 1b of the boss 1a, a mounting through hole is formed in the groove wall of the mounting groove 1b, and the outer end of the output shaft of the driver 5 is inserted into the mounting through hole; the swinging seat 2 is U-shaped, pin holes 2a are formed in the middle parts of two sides of the swinging seat 2, and a bolt inserted into the pin holes 2a is arranged on the bottom plate 1; the swinging seat 2 can swing around the pin hole 2 a; one side of the swing seat 2 is provided with a connecting part 2b, a connecting rod 7 is in a long strip plate shape, one end of the connecting rod 7 is hinged with the outer end of the connecting part 2b through a shaft position screw 8, and the other end of the connecting rod 7 is hinged with the outer end of the swing crank 6 through a pin 9.
Referring to fig. 3 to 5, when the needle pitch of "0" is required, the swing crank 6 is parallel to the vertical plane, and the swing seat 2 forms an angle a with the horizontal plane, so as to finally form the condition of the needle pitch of "0"; when the swing crank 6 is positioned at the position forming an angle B with the vertical plane, the swing seat 2 swings to the position forming an angle B with the horizontal plane, and finally the condition of the maximum forward sewing needle distance is formed; when the swinging crank 6 is positioned at the position forming an angle C with the vertical plane, the swinging seat 2 swings to the position forming an angle C with the horizontal plane, and finally the condition of the maximum backstitch stitch distance is formed. Similarly, when the swing crank 6 is located at a position between the angles B-0-C, the swing base 2 is driven to be located at a position between the angles B-a-C, so that any needle pitch from the maximum forward sewing to the maximum backward sewing is realized, and the needle pitch adjusting precision is related to the step angle of the driver 5 and the arm length of the swing crank 6.
In the needle distance adjusting structure, the driver 5 is fixed at the bottom of the bottom plate 1, so that the driver 5 is prevented from influencing the whole length or width of the machine, and oil resistance is realized more easily compared with other positions.
The needle pitch adjusting structure can control the adjustment of the positive and negative sewing and the needle pitch through one driving source, is not influenced by the working state and can be adjusted at any time; the connecting structure between the driver 5 and the swing seat 2 is simple and reliable, the assembling space is increased, the limitation of the assembling space on the size of the part is properly relaxed, the processing difficulty of the part is reduced, the manual assembling difficulty is reduced to a great extent, the manufacturing cost is saved, and the production benefit is improved; meanwhile, the needle pitch adjusting structure greatly reduces noise generated during needle pitch adjustment, improves the surrounding environment, reduces pressure intensity born by a contact surface, reduces impact force generated by member collision and prolongs the service life of parts on the premise of ensuring that the needle pitch adjusting function is not influenced.
As shown in fig. 2 and fig. 6, in the present embodiment, the driver 5 is a stepping motor 51, a connecting sleeve 4 is disposed at a connection position between an output shaft of the stepping motor 51 and the connecting shaft 3, the connecting sleeve 4 is fixed at a mounting through hole of the boss 1a, and the output shaft of the stepping motor 51 and the connecting shaft 3 are rotatably inserted into the connecting sleeve 4.
As shown in fig. 7 and 8, the output shafts of the connecting shaft 3 and the stepping motor 51 are both in the shape of a long cylindrical rod and have the same diameter, one end of the connecting shaft 3 is provided with a first connecting part 3a formed after a section of semi-cylinder is removed, the outer end of the output shaft of the stepping motor 51 is provided with a second connecting part 51a correspondingly matched with the first connecting part 3a, the first connecting part 3a and the second connecting part 51a are in a complementary relationship, the two parts are combined to form a complete cylinder, and then the cylinder is fixed through the connecting sleeve 4, so that the circumferential direction is formed and the connection is stable and reliable, and.
Example two
As shown in fig. 9, the present embodiment is substantially the same as the first embodiment, except that a groove 3b is formed in an end surface of one end of the connecting shaft 3 inward along the axial direction thereof, two sides of the groove 3b penetrate through two side surfaces of the connecting shaft 3, the outer end of the output shaft of the stepping motor 51 is provided with a flat insertion portion 51b, the insertion portion 51b is inserted into the groove 3b, and two side surfaces of the insertion portion 51b are abutted to the side surfaces of the groove 3b, so that the structure can be assembled conveniently and quickly, and the stable reliability of the connection of the output shaft of the stepping motor 51 of the connecting shaft 3 is ensured.
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.
Although 1, the bottom plate is used more herein; 1a, a boss; 1b, mounting grooves; 2. a swing seat; 2a, pin holes; 2b, a connecting part; 3. a connecting shaft; 3a, a first connecting part; 3b, a groove; 4. connecting sleeves; 5. a driver; 51. a stepping motor; 51a and a second connecting part; 51b, a plug part; 6. a swing crank; 7. a connecting rod; 8. an axial screw; 9. pins, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (7)
1. The utility model provides a structure is adjusted to sewing machine's gauge needle, sewing machine includes bottom plate (1), the structure is adjusted including setting up driver (5) and swing seat (2) of bottom plate (1) bottom, a serial communication port, circumference has linked firmly connecting axle (3) just on the output shaft of driver (5) can drive connecting axle (3) are rotated, swing crank (6) have set firmly on connecting axle (3), the outer end of swing crank (6) is followed the radial direction of connecting axle (3) extends just the outer end of swing crank (6) with be connected through connecting rod (7) between swing seat (2), connecting rod (7) can drive swing seat (2) swing.
2. The needle pitch adjusting structure of a sewing machine according to claim 1, wherein a boss (1a) is provided at the bottom of the base plate (1), a mounting groove (1b) is provided at the middle of the boss (1a), the driver (5) is fixedly arranged at the outer side of the boss (1a), the swing seat (2) and the connecting shaft (3) are positioned in the mounting groove (1b) of the boss (1a), a mounting through hole is provided on the groove wall of the mounting groove (1b), and the outer end of the output shaft of the driver (5) is inserted into the mounting through hole.
3. The needle pitch adjusting structure of a sewing machine according to claim 2, wherein the driver (5) is a stepping motor (51), a connecting sleeve (4) is arranged at the joint of the output shaft of the stepping motor (51) and the connecting shaft (3), the connecting sleeve (4) is fixed at the mounting through hole of the boss (1a), and the output shaft of the stepping motor (51) and the connecting shaft (3) are rotatably inserted into the connecting sleeve (4).
4. The needle pitch adjusting structure of a sewing machine according to claim 3, wherein the swing seat (2) is U-shaped, a pin hole (2a) is formed in the middle of each side of the swing seat (2), and the bottom plate (1) is provided with a plug pin inserted into the pin hole (2 a).
5. The needle pitch adjusting structure of a sewing machine according to claim 4, wherein the swing seat (2) has a connecting portion (2b) at one side thereof, the link (7) has a long plate shape, one end of the link (7) is hinged to an outer end of the connecting portion (2b) by a shaft screw (8), and the other end of the link (7) is hinged to an outer end of the swing crank (6) by a pin (9).
6. The needle pitch adjusting structure of a sewing machine according to claim 3, wherein the connecting shaft (3) and the output shaft of the stepping motor (51) are both in the shape of a long cylindrical rod and have the same diameter, one end of the connecting shaft (3) is provided with a first connecting portion (3a) formed by removing a section of a semi-cylinder, and the outer end of the output shaft of the stepping motor (51) is provided with a second connecting portion (51a) correspondingly matched with the first connecting portion (3 a).
7. The needle pitch adjusting structure of a sewing machine according to claim 3, wherein the connecting shaft (3) is in the shape of a long cylindrical rod, a groove (3b) is formed in one end of the connecting shaft (3) from an end surface inwards along the axial direction of the connecting shaft, two sides of the groove (3b) penetrate through two side surfaces of the connecting shaft (3), a flat insertion part (51b) is arranged at the outer end of an output shaft of the stepping motor (51), the insertion part (51b) is inserted into the groove (3b), and two side planes of the insertion part (51b) are attached to the side surfaces of the groove (3 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920440172.9U CN210151359U (en) | 2019-04-02 | 2019-04-02 | Sewing machine's gauge needle adjusts structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920440172.9U CN210151359U (en) | 2019-04-02 | 2019-04-02 | Sewing machine's gauge needle adjusts structure |
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| Publication Number | Publication Date |
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| CN210151359U true CN210151359U (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920440172.9U Active CN210151359U (en) | 2019-04-02 | 2019-04-02 | Sewing machine's gauge needle adjusts structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898245A (en) * | 2019-04-02 | 2019-06-18 | 浙江美机缝纫机有限公司 | A kind of needle gage adjustment structure of sewing machine |
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2019
- 2019-04-02 CN CN201920440172.9U patent/CN210151359U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109898245A (en) * | 2019-04-02 | 2019-06-18 | 浙江美机缝纫机有限公司 | A kind of needle gage adjustment structure of sewing machine |
| CN109898245B (en) * | 2019-04-02 | 2024-07-26 | 美机科技集团有限公司 | Needle distance adjusting structure of sewing machine |
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Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |