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Measuring device and method for measuring cloth length during sewing

A measuring device and fabric length technology, which is applied in the field of sewing machines, can solve problems such as inability to guarantee calculation accuracy, large calculation errors, uneven speed, etc., and achieve the effects of improving production efficiency and processing quality, simple structure, and convenient installation and debugging

Inactive Publication Date: 2016-08-17
AVIC SHANGHAI AERONAUTICAL MEASUREMENT CONTROLLING RES INST +1
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  • Application Information

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Problems solved by technology

However, in the actual sewing process, the speed of the sewing machine is not uniform, and the speed range is wide (from a few hundred rpm to four to five thousand rpm). The stitches will change at fast and slow speeds, and the number of turns is calculated separately. The accuracy of the calculation cannot be guaranteed, and large calculation errors often occur

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
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  • Measuring device and method for measuring cloth length during sewing
  • Measuring device and method for measuring cloth length during sewing
  • Measuring device and method for measuring cloth length during sewing

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Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the measuring device 4 is installed on the sewing machine 1, and the operation box 2 provides the necessary calculation and display functions. Such as figure 2 As shown, the detection port 5 is a test port for detecting the presence or absence of cloth and measuring the displacement of the cloth. Such as Figure 4 As shown, when the cloth 14 passes through the detection port, the light source emitted by the light source 11 is blocked to form reflection and refraction of the light, so that the light returns to the device 4 and enters the optical sensor 9, so that the cloth 14 is formed in the optical sensor 9. image information.

[0027] The optical sensor 9 is integrated by a CMOS image sensor and an optical positioning DSP (digital signal processor). The former is responsible for image collection and synchronizing it in...

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
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Abstract

The invention discloses a measuring device (4) used for measuring the length of cloth in the sewing process. The measuring device is installed on a table board (2) of a sewing machine (1), the measuring device (4) comprises a cover plate (6) and a shell (12), a detecting opening (5) is formed in the cover plate (6), a circuit board system (10), a light source (11), a lens system (8) and an optical sensor (9) are installed in the shell (12), the circuit board system (10) is connected with the light source (11) and the optical sensor (9), and the lens system (8) is provided with a set of lenses emitting light to the detecting opening (5) and another set of lenses reflecting reflected light into the optical sensor (9). The measuring device is simple in structure, high in precision, convenient to install and adjust, and capable of greatly increasing the production efficiency and the processing quality when the measuring device is arranged on various sewing devices in a matched mode.

Description

technical field [0001] The invention relates to a sewing machine, in particular to a measuring device for measuring cloth during sewing. Background technique [0002] Various sewing machines currently on the market mainly use the number of turns (number of stitches) to calculate the sewing length of the cloth during the sewing process or for signal input (such as automatic cutting) of third-party equipment. During the sewing process, the requirements for the length of the thread ends or strips produced at the end are relatively high. Generally, they are required to be flush with the steps or reserved according to the required length, so as to avoid manual trimming and improve production efficiency. However, in the actual sewing process, the speed of the sewing machine is not uniform, and the speed range is wide (from a few hundred rpm to four to five thousand rpm). The stitches will change at fast and slow speeds, and the number of turns is calculated separately. The accura...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/04G01P13/00G01P13/02
Inventor 胡云祥宋甲强王锦良
Owner AVIC SHANGHAI AERONAUTICAL MEASUREMENT CONTROLLING RES INST
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