A sewing machine for manually adjusting the stroke of the thread take-up lever
A technology of manual adjustment and thread take-up lever, which is applied in the direction of sewing machine components, sewing machine thread take-up device, sewing equipment, etc., can solve the problem of changing the thread supply amount of the thread take-up lever, and achieve reduced procurement costs, improved adaptability, and simple structure Effect
Active Publication Date: 2021-02-02
JACK SEWING MASCH CO LTD
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to provide a sewing machine with manual adjustment of the stroke of the thread take-up lever to solve the problem that the existing sewing machine cannot change the amount of thread supplied by the thread take-up lever according to the thickness of the sewing fabric
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] refer to Figure 1-3 , this embodiment provides a sewing machine for manually adjusting the stroke of the thread take-up lever, which includes a casing 1, a thread take-up link pin 6, a needle bar crank 7, a main shaft 8, a bearing 9, a thread take-up lever 10, and a thread take-up link 11 , eccentric pin connecting rod 12 and screw auxiliary mechanism.
[0040] Wherein, one end of the needle bar crank 7 is hinged with the casing 1 , and the other end ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a sewing machine for manually adjusting the stroke of a thread take-up lever. The thread take-up link pin is hinged with the casing; one end of the thread take-up link is hinged with the thread take-up lever, and the other end of the thread take-up link is hinged with the thread take-up link pin; a pin is installed on the rear side wall connecting the column pin, The pin is hinged with the other end of the eccentric pin connecting rod, and the other end of the eccentric pin connecting rod is hinged with the thread take-up connecting rod pin; the stroke adjustment knob is rotated and inserted into the connecting pin; the stroke adjustment knob is installed on the casing, and the stroke The lower end of the adjusting knob is rotated and inserted into the connecting pin. The present invention changes the eccentric position of the thread take-up link pin by manually controlling the movement of the stroke adjustment knob, so as to adjust the thread take-up movement track of the thread take-up lever, thereby causing the change of the thread supply amount. The change range of the thread supply amount of the thread take-up lever of the present invention is larger and finer.
Description
technical field [0001] The invention relates to the technical field of stroke adjustment of a thread take-up lever of a sewing machine, in particular to a sewing machine for manually adjusting the stroke of a thread take-up lever. Background technique [0002] The adaptability of the traditional sewing machine to the thickness of the sewing fabric is related to the stroke of the thread take-up lever in the thread take-up mechanism. However, due to the fixed size of the thread take-up mechanism and its accessories, the amount of thread supplied by the thread take-up lever cannot be adjusted, or the adjustment range is very limited. Some thread take-up levers change the stroke of the thread take-up lever by setting multiple holes, but the number of holes is limited, and the change in the amount of thread supply is not very large. Or by increasing the positioning plane of the thread take-up link pin, the purpose of adjusting the thread take-up stroke can be achieved, but the p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): D05B49/00
Inventor 刘强许君辉王军刘洁林晓晓
Owner JACK SEWING MASCH CO LTD