A kind of automatic reset device of sewing machine bottom thread detection sensor and sewing machine

A detection sensor, automatic reset technology, applied in the direction of bobbin winding, sewing equipment, sewing machine components, etc. in sewing machines, can solve the problems of sensor signal reception deviation, easy to touch the sensor, affecting detection accuracy, etc., to ensure accuracy. , the effect of reducing labor intensity and improving accuracy

Active Publication Date: 2020-01-31
JACK SEWING MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this technical scheme, its sensor is fixedly installed on the bracket, and the bracket is fixedly installed on the base plate, so that the sensor is located in front of the light-transmitting hole of the bobbin case and keeps a certain distance. There are some problems in it: due to the distance between the sensor and the bobbin Closer (because if the installation distance is longer, it will cause the deviation of the sensor signal reception and affect the detection accuracy), then the space left between the two is small, and when the user changes the shuttle due to the small operable space, it is difficult to change the shuttle. It is very inconvenient and the hand is easy to touch the sensor when changing the shuttle and damage the sensor

Method used

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  • A kind of automatic reset device of sewing machine bottom thread detection sensor and sewing machine
  • A kind of automatic reset device of sewing machine bottom thread detection sensor and sewing machine
  • A kind of automatic reset device of sewing machine bottom thread detection sensor and sewing machine

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 , 2 As shown in and 3, the sewing machine includes a bottom plate 1 and a rotary hook 2, the rotary hook 2 includes a bobbin case and a bobbin, and there is a gap on the bobbin case. The sensor 3 and the reset mechanism on 4, the reset mechanism can put the sensor 3 in the detection state or the shuttle change state. The detection state is that the sensor 3 is close to and facing the notch of the bobbin case to detect the bobbin thread margin on the bobbin. The state of changing the hook is that the sensor 3 and the sensor holder 4 are away from the rotary hook 2 for a period of time so as to reserve a large space for changing the hook.

[0036] Reset mechanism comprises reset transmission structure, controller and the electromagnet that is connected with controller, and the electromagnet of present embodiment is push-pull type electromagnet-5, and the controller of present embodiment is the electric control box of sewing machine, certainly its control...

Embodiment 2

[0040] Such as Figure 4 and 5 As shown, the difference between the structure of this embodiment and the first embodiment is that the reset transmission structure includes a rotating bracket 15, an eccentric wheel 16, a reset torsion spring 18 and a pull wire 14, and the rotating bracket 15 is fixedly installed on the bottom plate 1 and its The rotating shaft 17 that can rotate relative to the rotating bracket 15 is installed on the top, the sensor holder 4 is fixedly sleeved and connected with the rotating shaft 17, and the eccentric wheel 16 is fixedly installed on one end of the rotating shaft 17 (its eccentric wheel 16 and the rotating shaft 17 can also be One-piece structure), the electromagnet is a push-pull electromagnet 13, and the two ends of the backguy 14 are fixedly connected with the push-pull electromagnet 13 and the eccentric wheel 16 respectively through the stay wire connecting plate, and one end of the reset torsion spring 18 is connected to the rotating brac...

Embodiment 3

[0044] Such as Figure 6 and 7 As shown, the structure difference between this embodiment and Embodiment 1 is that the reset transmission structure includes a limit bracket 23 and a reset torsion spring 24, the electromagnet is a rotating electromagnet 22, and one end of the sensor holder 4 is fixedly connected to the rotating electromagnetic On the output shaft of iron 22, the limit bracket 23 is fixedly installed on the base plate 1, and the rotating electromagnet 22 is installed on the limit bracket 23, and the limit bracket 23 has a limit support plate one 231 and a limit support plate two 232, reset One end of the torsion spring three 24 is connected to the sensor holder 4, and the other end is connected to the above-mentioned limit support plate one 231, and the reset torsion spring three 24 has the torsional force that makes the sensor holder 4 close to the rotary hook 2. When the sensor 3 is located In the detection state, the sensor fixing frame 4 just abuts against ...

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PUM

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Abstract

The invention provides an automatic reset device of a baseline detection sensor of a sewing machine and the sewing machine, belongs to the technical field of mechanical sewing machines, and aims at solving the problem that a rotating hook is inconvenient to change due to the fact that the space between a sensor and the rotating hook is small in an existing baseline detection device. The automatic reset device of the baseline detection sensor of the sewing machine comprises a sensor fixing frame, a sensor arranged on the sensor fixing frame, and a reset mechanism, wherein the reset mechanism is capable of making the sensor in a detection state or a hook changing state; the detection state is that the sensor is close to and opposite to the rotating hook; and the hook changing state is that the sensor and the sensor fixing frame are far away from the rotating hook for a period of time to make space for changing the hook. The automatic reset device of the baseline detection sensor of the sewing machine has the advantages that the hook is convenient to change and the baseline allowance detection accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of mechanical sewing machines, and relates to an automatic reset device for a bottom thread detection sensor of a sewing machine. Background technique [0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the fabric to interweave or sew one or more layers of fabric. When the sewing machine is sewing the fabric, the rotary hook and the needle of the sewing machine cooperate with each other to interweave the bottom thread and the upper thread and sew them on the fabric to form stitches. The upper thread is passed through the needle eye of the machine needle, and the machine needle moves up and down; the rotary hook is composed of a bobbin case and a bobbin, the bobbin is accommodated in the bobbin case, and the bottom thread is wound on the bobbin. The upper thread is generally longer, 3000m-4000m, and the user can observe the amount of upper thread at any...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D05B59/02D05B59/04
CPCD05B59/02D05B59/04
Inventor 许君辉马鸣岚潘建国
Owner JACK SEWING MASCH CO LTD
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