A needle distance adjustment mechanism and sewing machine based on arc-shaped stepping motor
A technology of stepping motor and needle pitch adjustment, applied in sewing machine components, sewing machine control devices, sewing equipment, etc., can solve the problems of poor sewing quality, difficult accurate positioning, large needle pitch error, etc., and achieve volume and weight reduction. , the effect of reducing cost and weight, avoiding wear and tear
Active Publication Date: 2021-07-23
JACK SEWING MASCH CO LTD
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Problems solved by technology
However, this sewing machine has the following defects: when switching between forward stitching and reverse stitching, the rapid movement of the reverse stitching electromagnet will cause impact between the mechanical structures, resulting in a large operating noise, and at the same time due to impact wear and tear during long-term work Finally, it will affect the adjustment accuracy of the sewing machine needle pitch; in addition, because the distribution position of the dial in the sewing machine cannot achieve high-precision adjustment of the needle pitch, the error of the stitch pitch adjustment is large. It is difficult to achieve precise positioning, which eventually leads to problems such as poor sewing quality
Method used
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[0089] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0090] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Therefore, there is no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure of the present invention without affecting the functions and objectives of the present invention. within the scope of technical content. At the same time, terms such as "upper", "lo...
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The invention provides a needle distance adjustment mechanism based on an arc-shaped stepping motor, which includes a main shaft, a tooth frame, a feeding dog, a feeding mechanism, a bottom plate, an oil sealing plate fixed at the lower end of the bottom plate, and an arc-shaped stepping mechanism located in the oil sealing plate. The motor, and the adjustment transmission assembly, the arc-shaped stepper motor includes a stator assembly that is not 360° arc-shaped as a whole, a rotor assembly that matches the stator assembly, and a motor shaft that is fixed to the rotor assembly, and the stator assembly The formed exterior is wrapped with a sealing layer, and the motor shaft is connected to a feeding transmission part in the feeding mechanism by adjusting the transmission assembly; when the arc-shaped stepper motor is powered on, the motor shaft changes the inclination angle of the feeding transmission part by adjusting the transmission assembly to realize needle feeding. pitch adjustment; this application uses an arc-shaped stepping motor as the driving source for stitch pitch adjustment, and the arc-shaped stepping motor will not produce a large working noise when outputting, and it can also avoid wear and tear between mechanical structures and ensure stitch pitch adjustment The precision is beneficial to reduce the cost and weight of the sewing machine.
Description
technical field [0001] The invention relates to a needle distance adjusting mechanism based on an arc-shaped stepping motor. [0002] The present invention also relates to a sewing machine comprising the above-mentioned stitch length adjusting mechanism. Background technique [0003] At present, during the use of sewing machines (such as locket sewing machines), the function of adjusting the stitch length is adjusted by manually turning the stitch length adjustment stud and mechanically combining the dial, and reverse stitching is used during the reverse stitching process. The mechanical mechanism that the electromagnet pulls back and forth makes the needle pitch value switch between positive and negative numbers, such as a sewing machine disclosed in the Chinese invention patent application specification with application number 201810699812.8. However, this sewing machine has the following defects: when switching between forward stitching and reverse stitching, the rapid m...
Claims
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IPC IPC(8): D05B27/22D05B69/10D05B27/02
CPCD05B27/02D05B27/22D05B69/10
Inventor 丁建明潘建国
Owner JACK SEWING MASCH CO LTD