CN218951667U - Needle distance adjusting device of sewing machine - Google Patents
Needle distance adjusting device of sewing machine Download PDFInfo
- Publication number
- CN218951667U CN218951667U CN202320041014.2U CN202320041014U CN218951667U CN 218951667 U CN218951667 U CN 218951667U CN 202320041014 U CN202320041014 U CN 202320041014U CN 218951667 U CN218951667 U CN 218951667U
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- China
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- stitch length
- spring
- length adjusting
- backstitch
- sewing machine
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Abstract
The utility model relates to the field of industrial sewing machines, in particular to a needle pitch adjusting device of a sewing machine, which consists of a knob adjusting component, a needle pitch adjusting seat, a needle pitch adjusting crank, a backstitch shaft, a backstitch fork, a backstitch shaft and a backstitch spring.
Description
Technical Field
The utility model relates to the field of industrial sewing machines, in particular to a needle distance adjusting device suitable for a zigzag sewing machine.
Background
As shown in fig. 2, the stitch length adjusting device of the old-style curved sewing machine can cause the condition that the stitch length adjusting pin a is broken by the stitch length adjusting crank b in the long-term use process.
Disclosure of Invention
In order to solve the defects of the zigzag sewing machine, the utility model provides a needle distance adjusting device of the sewing machine.
The needle distance adjusting device of the sewing machine is characterized by comprising a knob adjusting assembly, wherein the knob adjusting assembly comprises a spring, a stop pin, a needle distance dial positioning plate, a tower-type spring, a needle distance adjusting screw rod, a rubber ring, a needle distance dial, a dial panel, a gasket and a needle distance dial screw, the rubber ring, the needle distance dial, the dial panel and the gasket are arranged on a needle distance adjusting seat through the needle distance adjusting screw rod, the needle distance adjusting screw rod passes through the needle distance dial positioning plate, the needle distance dial positioning plate presses the tower-type spring, the spring and the stop pin are arranged in a pin hole of the needle distance adjusting seat, the needle distance adjusting seat is fixed on a shell, a backstitch shaft is arranged on the shell and can freely rotate, the backstitch fork and a needle distance adjusting crank are respectively fixed on the backstitch shaft, a backstitch rod is arranged on the shell and can freely rotate left and right, a cylindrical pin on the backstitch fork is inserted in a groove, one end of the spring and the spring is arranged on the backstitch rod, one end of the spring contacts with the shell, and the other end of the spring contacts with the shell.
Preferably, the clamping spring is an E-shaped clamping spring.
Preferably, the thread of the gauge needle adjusting screw is a trapezoid thread, the rubber ring is sleeved in the annular groove of the gauge needle adjusting screw, and the spherical surface positioned at the head of the gauge needle adjusting screw is always contacted with the Y-shaped fork inclined surface of the gauge needle adjusting crank.
Preferably, the distance from the shaft hole of the needle pitch adjusting crank to the Y-shaped fork opening is 16mm.
Preferably, the diameter of the trapezoidal thread section of the gauge adjusting screw is 11mm.
The utility model has the beneficial effects that the diameter of the gauge wire adjusting screw rod is 11mm larger than the diameter of the gauge wire adjusting pin shaft a of the old style gauge wire adjusting device by 5mm, and the distance from the shaft hole of the gauge wire adjusting crank to the Y-shaped fork opening of the gauge wire adjusting crank is about one half of that of the old style gauge wire adjusting crank b, so that the gauge wire adjusting screw rod receives smaller impact force when the machine is in backstitch operation, and the gauge wire adjusting screw rod is more firmly matched with the gauge wire adjusting seat by the rubber ring, so that the condition of being broken can not occur in the long-term use process of the machine.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model
FIG. 2 is a schematic view of a stitch length adjusting device of the old style zigzag sewing machine.
Detailed Description
The needle distance adjusting device of the sewing machine is characterized by comprising a knob adjusting assembly, wherein the knob adjusting assembly comprises a spring 3, a stop pin 4, a needle distance dial positioning plate 5, a tower-shaped spring 6, a needle distance adjusting screw rod 7, a rubber ring 8, a needle distance dial 9, a dial panel 10, a gasket 11 and a needle distance dial screw 12, the needle distance dial 9, the dial panel 10 and the gasket 11 are fixed on the needle distance adjusting screw rod 7 through the needle distance dial screw 12, the needle distance adjusting screw rod 7 is arranged on the needle distance adjusting seat 2, threads of the needle distance adjusting screw rod 7 are trapezoid threads, the diameter of a trapezoid thread section is 11mm, the rubber ring 8 is sleeved in an annular groove of the needle distance adjusting screw rod 7, the spring 3 and the stop pin 4 are arranged in a pin hole of the needle distance adjusting seat 2, and a first screw 1 of the needle distance adjusting seat 2 is fixed on a shell, the backstitch shaft 13 is arranged on the shell and can freely rotate, the backstitch shaft 13 can not slide back and forth, the backstitch fork 16 and the needle pitch adjusting crank 14 are fixed on the backstitch shaft 13 through a second screw 17 and a third screw 15, the spherical surface positioned at the head of the needle pitch adjusting screw 7 is always contacted with the Y-shaped fork inclined surface of the needle pitch adjusting crank 14, the distance from the shaft hole of the needle pitch adjusting crank 14 to the Y-shaped fork is 16mm, the backstitch rod (19) is arranged on the shell and can slide left and right, but the backstitch rod 19 can not freely rotate, a cylindrical pin on the backstitch rod 19 is inserted in a groove of the backstitch fork 16, a spring 18 and a clamp spring 20 are arranged on the backstitch rod 19, one end of the spring 18 is contacted with the E-shaped clamp spring 20, and the other end of the spring 18 is contacted with the shell.
When the needle distance mark disc positioning plate 5 is pressed during use, the tower-shaped spring 6 is compressed, the stop pin is simultaneously moved downwards to disengage the needle distance mark disc 9, at the moment, the needle distance adjusting screw rod 7 is moved up and down in the needle distance adjusting seat 2 by rotating the needle distance mark disc 9 clockwise or anticlockwise, the needle distance adjusting crank 14 is enabled to follow and swing for a certain angle under the elastic force of the backstitch spring 18 by the up and down movement of the needle distance adjusting screw rod 7, the aim of adjusting the needle distance of a sewing thread is achieved, the needle distance mark disc positioning plate 5 is released after the adjustment is finished, and the tower-shaped spring 6 and the stop pin 4 are reset in time.
Claims (5)
1. The utility model provides a sewing machine stitch length adjusting device, a serial communication port, including knob adjusting part, knob adjusting part includes the spring, the retaining pin, stitch length scale locating plate, the tower spring, stitch length adjusting screw, the rubber circle, stitch length scale, the scale panel, packing ring and stitch length scale screw, the rubber circle, stitch length scale, scale panel and packing ring pass through stitch length adjusting screw and install on stitch length adjusting seat, stitch length adjusting screw passes stitch length scale locating plate, and stitch length scale locating plate pushes down the tower spring, spring and retaining pin then install in stitch length adjusting seat's pinhole, and stitch length adjusting seat fixes on the casing, the backstitch axle is installed on the casing and can freely rotate, the backstitch fork and stitch length adjusting crank are fixed respectively on the backstitch axle, the backstitch pole is installed on the casing and can freely rotate, the cylindric lock on the backstitch fork is inserted in the groove, spring and jump spring all install on the backstitch pole, the other end of spring and jump spring contact, the other end and the casing of spring.
2. The stitch length adjusting device of a sewing machine of claim 1, wherein the clamp spring is an E-clamp spring.
3. The stitch length adjusting device of a sewing machine of claim 2, wherein the thread of the stitch length adjusting screw is a trapezoidal thread, the rubber ring is sleeved in the annular groove of the stitch length adjusting screw, and the spherical surface at the head of the stitch length adjusting screw is always contacted with the Y-shaped fork inclined surface of the stitch length adjusting crank.
4. A stitch length adjusting apparatus for a sewing machine as recited in claim 3, wherein the distance from the axial bore of the stitch length adjusting crank to the Y-fork is 16mm.
5. The stitch length adjustment apparatus of claim 4, wherein the trapezoidal thread section of the stitch length adjustment screw has a diameter of 11mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041014.2U CN218951667U (en) | 2023-01-08 | 2023-01-08 | Needle distance adjusting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320041014.2U CN218951667U (en) | 2023-01-08 | 2023-01-08 | Needle distance adjusting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218951667U true CN218951667U (en) | 2023-05-02 |
Family
ID=86102077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320041014.2U Active CN218951667U (en) | 2023-01-08 | 2023-01-08 | Needle distance adjusting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218951667U (en) |
-
2023
- 2023-01-08 CN CN202320041014.2U patent/CN218951667U/en active Active
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