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Sewing machine and flexible medium presser foot driving mechanism

A driving mechanism and sewing machine technology, which is applied in the field of sewing machines, can solve the problems of large casing and inconvenient maintenance, and achieve the effects of reducing maintenance-based, convenient maintenance, and reducing volume

Pending Publication Date: 2014-04-30
张章生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the presser foot driving mechanism in the sewing machine has a relatively large casing and is inconvenient for maintenance.

Method used

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  • Sewing machine and flexible medium presser foot driving mechanism
  • Sewing machine and flexible medium presser foot driving mechanism
  • Sewing machine and flexible medium presser foot driving mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 2 with image 3As shown, the first motor 1 in the driving mechanism of the flexible intermediate presser foot is fixed on the outer surface of the casing. The machine needle spindle of the sewing machine is driven by a second motor, and the second motor is fixed on the casing. The middle presser foot is driven by an independent first motor, the needle spindle of the sewing machine is driven by an independent second motor, and an encoder (second encoder) is also provided on the second motor, and the first motor and the second motor are respectively controlled The unit control moves synchronously according to the corresponding motion trajectory preset in the program. Since the intermediate presser foot and the needle main shaft are driven by two independent motors, the movement of the intermediate presser foot has nothing to do with the movement of the mechanical part of the needle main shaft.

[0038] For the sake of safety, a motor cover 22 is arrange...

Embodiment 2

[0042] Such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the first motor 1 in the flexible middle presser driving mechanism is fixed on the inner side wall of the casing.

[0043] Specifically, the first motor is fixed on the motor mounting bracket, and the motor bracket is fixed on the inner side wall of the casing near the end where the sewing machine head is located.

[0044] In order to ensure the vertical movement of the presser bar 14, the connecting block 12 is provided with an anti-deflection slide block 121, and the anti-deflection slide block 121 fixes the presser bar 14 on the link block 12 through the presser bar screw 11. A vertical chute 18 is provided, and the free end of the anti-deflection sliding block 121 is slidably arranged in the chute 18 .

[0045] The sewing machine provided by the present invention has a flexible driving mechanism for the intermediate presser foot. The intermediate presser foot is driven by an...

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PUM

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Abstract

The invention discloses a sewing machine and a flexible medium presser foot driving mechanism. The flexible medium presser foot driving mechanism comprises a presser foot rod and a driving device; the driving device is used for driving the presser foot rod to move up and down; the driving device comprises a first motor and a control unit; a first encoder is arranged on the first motor; an output shaft is connected with a connection block through a rod swinging mechanism; the connection block is fixedly connected to the presser foot rod; and the control unit is used for controlling the first motor to rotate clockwise or anticlockwise circularly and repeatedly according to a feedback signal of the encoder, so that the connection block is driven to move up and down. According to the sewing machine and the flexible medium presser foot driving mechanism, the medium presser foot is driven by an independent motor without relevance with the movement of a machine needle spindle; meanwhile, an output shaft of the motor is connected with the connection block through a rod swinging mechanism; the motor of the medium presser foot mechanism can be placed in a shell of the sewing machine or placed out of the shell of the sewing machine, so that the volume of the shell of the sewing machine can be reduced; and the sewing machine is simple in structure and convenient to maintain, so that the maintenance cost is reduced.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a flexible intermediate presser foot mechanism of the sewing machine. Background technique [0002] When the traditional sewing machine lifts the needle on the sewing material, the needle is easy to lift the sewing material together, causing the problem of thread jumping. In order to realize the anti-jumping function of the sewing machine, the existing method is to add a middle presser mechanism on the sewing machine, but the structure of the existing sewing machine middle presser mechanism is complex, there are many parts, the cost of manufacturing and maintenance is high, and there are the following Some flaws: [0003] (1) The up and down driving device of the intermediate presser is attached to the needle transmission shaft, so that as long as the needle moves, the intermediate presser will move up and down. However, in actual work, depending on the sewing fabric and process , sometimes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D05B29/02D05B69/02
Inventor 张章生
Owner 张章生