Sewing machine base plate with constant pressure

Abstract

The invention discloses a sewing machine base plate with constant pressure, which relates to the technical field of sewing machine equipment, and adopts the technical scheme that the sewing machine base plate comprises a connecting frame, the bottom of the connecting frame is movably connected with a presser foot, the left end part of the presser foot is detachably connected with a head-up seat assembly, a roller groove is formed in the center of the bottom of the presser foot, and the inner wall of the roller groove is rotatably connected with a rotating shaft; the lifting device comprises a lifting seat, a rectangular inserting block is arranged in the lifting seat, two sets of rotating shafts are arranged in a bilateral symmetry mode, rolling wheels are fixedly installed on the outer walls of the two sets of rotating shafts, anti-skid lines are arranged on the outer walls of the rolling wheels, and the outer walls of the rolling wheels are tangent to the bottom of a pressing foot. The distance between the two groups of head-up seats can be conveniently adjusted according to the sewing material, so that the pressing angle of the head-up seats on the sewing material can be conveniently adjusted, and the stability of the presser foot when the presser foot moves on the top of the sewing material is improved.

Description

technical field [0001] The invention relates to the technical field of sewing machine equipment, in particular to a sewing machine base plate with constant pressure. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing materials. The sewing machine can sew cotton, hemp, silk, wool , artificial fiber and other fabrics and leather, plastic, paper and other products, the stitches are neat and beautiful, flat and firm, the sewing speed is fast, and the use is easy, and it is derived from hand-push embroidery and computer embroidery. When using a sewing machine with high safety requirements and poor craftsmanship, there may be problems of thread jamming and thread breakage, which will affect the sewing efficiency and sewing quality. [0003] The existing technology has the following disadvantages: when the existing sewing machine is wo...

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Problems solved by technology

[0002]The sewing machine uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing materials are interwoven or stitched The sewing machine can sew fabrics such as cotton, linen, silk, wool, and artificial fibers and products such as leather, plastic, and paper. The stitches are neat and beautiful, flat and firm, and the sewing speed is fast and easy to use. Art forms such as hand push embroidery and computer embroidery are derived. Sewing machines have high requirements for smoothness when using them. When using sewing machines with poor craftsmanship, there may be problems of thread jamming and thread breaking, which will affect sewing efficiency and sewing quality.

[0003] The prior art has the following disadvantages: when the existing sewing machine is working on the base plate, in order to maintain the smoothness of the base plate, a sewing machine presser foot with constant pressure must be used , the existing sewing machine presser foot structure cannot flexibly adjust the interval between the two sets of head-up seats according to the requirements of the sewing material. At the same time, when the sewing material moves at the bottom of the sewing machine presser foot, the pressure may not be constant due to the unsteady movement. Problems that affect the normal use of the sewing machine

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