CN101314889A

CN101314889A - Yarn length monitoring apparatus for flat machine

Info

Publication number: CN101314889A
Application number: CNA2007101117012A
Authority: CN
Inventors: 张民
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-02
Filing date: 2007-06-02
Publication date: 2008-12-03

Abstract

The invention discloses a flat-knitting machine yarn length monitor which is formed by electrically connecting a keyboard, a display, a singlechip, a machine head sensor, a yarn length sensor, etc. The perimeter value of the yarn measuring wheel of the yarn length sensor is input by the keyboard; the yarn measuring wheel of the yarn length sensor and a photoelectric switch change the yarn length into electric pulses input into the singlechip; and the machine head sensor changes a particular position of the machine head running into electrical pulses input into the singlechip. The singlechip calculates the yarn length consumed by a reciprocating process of the machine head of the flat-knitting machine according to the cumulative quantity of the electrical pulses of yarn length sensor between the two adjacent electrical pulses of the machine head sensor, and shows the yarn length on the display. The flat-knitting machine yarn length monitor shows the yarn length of the flat-knitting fabric on a real time basis, thereby an operator can adjust a knitting mechanism in time, the yarn length of the fabric is enabled to always accord with the technological requirements, the product quality is improved, and the defective goods caused by the fabric density over standard is avoided.

Description

Yarn length monitoring apparatus for flat machine

Affiliated technical field

The present invention relates to a kind of device that flat machine is carried out the long monitoring of yarn.

Background technology

Yarn length is an important indicator that guarantees the knitted in flat knitting machine amount, and it is long to adopt artificial mode to measure yarn at present.This metering system is inaccurate, and is untimely, often because the long deviation of yarn causes product defective.

Summary of the invention

For yarn progress row monitoring, the invention provides the long device of a kind of real-time demonstration yarn to flat knitting.The present invention solves its technical problem by the following technical solutions:

The present invention is electrically connected by keyboard, display, single-chip microcomputer, head sensor, yarn long pass sensor and forms.Survey yarn wheel perimeter value by keyboard to the single-chip microcomputer input.The survey yarn wheel of yarn long pass sensor and optoelectronic switch are converted into electric pulse input single-chip microcomputer with length of yarn.

During the straight-bar machines operation, head is reciprocating on needle plate.The head sensor is converted into electric pulse with a certain ad-hoc location of head operation.The pulse of head sensor is the starting point of single-chip microcomputer once-through operation and the end point of previous operation.Two adjacent electric pulses of head sensor represent that of head is reciprocal.

Single-chip microcomputer is according to the yarn long pass sensor electric pulse quantity of accumulative total between two adjacent electric pulses of head sensor, and it is long to calculate reciprocal yarn that consumes of flat-knitting machine head, and shows on display.

The invention has the beneficial effects as follows: overall process shows that in real time each reciprocal yarn that consumes of flat machine head is long, the operator can adjust knitting mechanism in time in view of the above, make the yarn length of fabric meet technological requirement all the time, improve the quality of products, avoid Density to exceed standard and cause defective work.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples.

Fig. 1 is an electrical connection schematic diagram of the present invention.

Among the figure: 1, keyboard; 2, the optoelectronic switch of yarn long pass sensor; 3, yarn; 4, the survey yarn of yarn long pass sensor wheel; 5, survey yarn wheel loophole; 6, the head of flat machine; 7, the needle plate of flat machine; 8, head sensor; 9, single-chip microcomputer; 10, display.

Fig. 2 is a program flow diagram of the present invention

In each step or the decision of this flow chart indicating, in the program that reality is carried out, can comprise one Individual or a plurality of steps, each step often self are exactly a complete subprogram. The programming of these steps belongs to In what ordinary procedure person was familiar with, for simplicity, no longer describe in detail.

After setting up procedure 1, step 2 is finished chip port and is initialized, and step 3 is recovered the setting before the power down Value and count value, this is known in those skilled in the art.

Single-chip microcomputer is carried out determining step 4: judged whether the pulse of head sensor, if judged result is negative , then carry out determining step 5: whether the pulse of yarn long pass sensor is arranged, if judged result negates then to return Return determining step 4; If judged result is sure, then carry out accumulation step 6: yarn long pass sensor umber of pulse Add 1, also return then determining step 4. If the judged result of determining step 4 is sure, illustrate knitting The head of straight-bar machines has moved one back and forth, should carry out calculation procedure 7:

The yarn long value of an electric pulse representative of yarn length=yarn long pass sensor

The yarn long pass sensor electric pulse sum of accumulative total between two adjacent electric pulses of * head sensor.

This formula is that those skilled in the art are readily appreciated that. Behind the completing steps 7, follow execution in step 8: more New display buffer, the yarn long value that step 7 is obtained is presented on the display. Carry out then zero clearing step 9: Yarn long pass sensor umber of pulse zero clearing to accumulative total. Get back at last determining step 4, program begins circulation next time.

The specific embodiment

Before straight-bar machines started, the operator surveyed the perimeter value of yarn wheel (4) to single-chip microcomputer (9) input yarn long pass sensor by keyboard (1).

Yarn long pass sensor is the device that length of yarn is converted into electric pulse, forms by surveying yarn wheel (4) and optoelectronic switch (2).The loophole (5) of the some that equidistantly distributing on a concentric circles surveying yarn wheel (4) plane, loophole quantity is advisable with 20 to 50.In the both sides of loophole (5) correspondence position is respectively the element that transmits and receives of optoelectronic switch (2).When yarn (3) drives survey yarn wheel (4) rotation, loophole (5) and the lightproof part of surveying yarn wheel (4) will pass through optoelectronic switch (2) successively, the optical signal switching be replaced, thereby send electric pulse.Survey yarn wheel (4) and rotate a circle, optoelectronic switch (2) sends the electric pulse that equates with loophole (5) quantity, so the quantity of the girth ÷ loophole (5) of the survey yarn of an electric pulse representative of yarn long pass sensor wheel perimeter value=survey yarn wheel.Because yarn (3) contacts with survey yarn wheel (4) and certain angle that holds is arranged, do not slide, so the yarn long value of an electric pulse representative equals the survey yarn wheel perimeter value of an electric pulse representative.

During the straight-bar machines operation, head (6) traction yarn (3) is gone up reciprocating at needle plate (7).Head sensor (8) is converted into electric pulse with a certain ad-hoc location of head (6) operation, and head sensor (8) is selected for use near switch and is advisable.Two adjacent electric pulses of head sensor (8) can represent that of head (6) is reciprocal.

Single-chip microcomputer (9) is according to the yarn long pass sensor electric pulse quantity of accumulative total between (8) two adjacent electric pulses of head sensor, it is long to calculate (6) reciprocal yarns that consume of flat-knitting machine head, and on display (10), show, display should be selected 4 to 5 charactrons or LCDs for use.

The yarn long pass sensor electric pulse sum yarn length of accumulative total is meant the length of yarn that knitted fabric was consumed when one of head (6) operation of flat machine was reciprocal between two adjacent electric pulses of * head sensor.

Claims

A kind of Yarn length monitoring apparatus for flat machine, it comprises display, single-chip microcomputer, keyboard, head sensor, yarn long pass sensor.It is characterized in that: single-chip microcomputer is according to the pulse signal of surveying yarn wheel perimeter value, head sensor and yarn long pass sensor, and it is long to calculate reciprocal yarn that consumes of flat-knitting machine head, and shows by display.