Transmission mechanism of three-needle lockstitch sewing machine
A technology of transmission mechanism and lockstitch sewing machine, which is applied in the direction of sewing machine ring mechanism, sewing machine components, sewing equipment, etc. It can solve the problems of synchronous belt wear and looseness, synchronous belt easy to slip, synchronous belt derailment transmission failure, etc., and achieve meshing transmission Small wear, improved sewing effect, and stable transmission
Inactive Publication Date: 2012-05-02
TAIZHOU JVKE SEWING MACHINE CO LTD
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Problems solved by technology
However, in the above-mentioned lockstitch sewing machine, a synchronous belt is used to complete the transmission connection between the left-handed hook, the right-handed hook and the middle-rotary hook. The synchronous belt between the rotary hooks will be worn and loose due to the service life of its material, and the synchronous belt is easy to slip, which will affect the sewing effect; if the rotary speed of the rotary hook is too high, it will easily cause the synchronous belt to derail and fail, which will affect the normal operation of the machine. work creates danger
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[0016] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0017] Such as figure 1 As shown, the transmission mechanism of the three-needle lockstitch lockstitch sewing machine is mainly composed of a transmission shaft 1, a left shuttle frame 2 and a right shuttle frame 3. A right-hand hook 5 is provided on the top, and a worm gear and worm are respectively arranged on the left shuttle frame 2 and the right shuttle frame 3. The first helical gear 13 is provided on the worm wheel 11, and the second helical gear 14 meshing with the first helical gear 13 is arranged on the worm screw 12. The worm screw 12 in the left shuttle frame 2 and the right shuttle frame 3 is a hollow sleeve, and the rotating shaft of the left-hand hook 2 or the right-hand hook 3 is inserted into the hollow sleeve ...
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The invention provides a transmission mechanism of a three-needle lockstitch sewing machine, which belongs to the technical field of lockstitch sewing machines and is used for solving the problems of wear, looseness and easiness in slipping of a synchronous belt of the conventional three-needle lockstitch sewing machine. The transmission mechanism of the three-needle lockstitch sewing machine comprises a transmission shaft, a left shuttle frame and a right shuttle frame, wherein the left shuttle frame is provided with a left rotating shuttle; the right shuttle frame is provided with a right rotating shuttle; the left shuttle frame and the right shuttle frame are provided with a worm and gear mechanism for driving the left rotating shuttle and the right rotating shuttle to rotate respectively; the transmission shaft is connected with the worm and gear mechanism, and is used for driving the two worm and gear mechanisms to rotate simultaneously; one side between the left shuttle frame and the right shuttle frame is provided with a middle shuttle frame; the middle shuttle frame is provided with a middle rotating shuttle; and a linkage device for driving the middle rotating shuttle to rotate through a gear set synchronously is arranged between the left rotating shuttle and the right rotating shuttle. According to the invention, the engaging transmission wear among gears is smaller,slippage is prevented, and the sewing effect of the sewing machine is enhanced.
Description
technical field [0001] The invention belongs to the technical field of lock stitch sewing machines, and relates to a transmission mechanism of a three-needle lock stitch sewing machine. Background technique [0002] Lockstitch sewing machine mainly uses a sewing thread to form a stitch on the sewing material, so that one or more layers of sewing materials are interwoven or stitched together; usually, there are two sewing purposes for sewing thin and thick materials. Lockstitch sewing machine can sew cotton, hemp, silk, wool, artificial fibers and other products or sewing, leather, plastics, paper and other products; In the loop, a lock stitch is formed. [0003] In recent years, a single-needle or double-needle lockstitch lockstitch sewing machine has appeared on the existing market, such as the Chinese patent No.: "200720003863.X" provides a small-pitch structure of a double-needle lockstitch , its concrete structure comprises the left shuttle frame that is fixed on the s...
Claims
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IPC IPC(8): D05B57/36
Inventor 张金福
Owner TAIZHOU JVKE SEWING MACHINE CO LTD