CN102888733A - Method for controlling gram weight of knitted fabric based on setting machine - Google Patents
Method for controlling gram weight of knitted fabric based on setting machine Download PDFInfo
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- CN102888733A CN102888733A CN2012104146003A CN201210414600A CN102888733A CN 102888733 A CN102888733 A CN 102888733A CN 2012104146003 A CN2012104146003 A CN 2012104146003A CN 201210414600 A CN201210414600 A CN 201210414600A CN 102888733 A CN102888733 A CN 102888733A
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Abstract
The invention relates to the technical field of fabric gram weight methods, and particularly relates to a method for controlling the gram weight of a knitted fabric based on a setting machine. According to the method, the overfeeding value is known in advance to control the setting overfeeding amount according to the actual situations of a fabric, so that the production overfeeding value is reasonably controlled, and the gram weights of an unknown fabric and a known fabric can be stably controlled; and a textile worker can conveniently convert the setting technological parameters according to the off-loom gram weights of fabrics during operation. With the method, the fluctuation of the gram weight can be prevented and known in advance, and the method is economic and practical.
Description
Technical field
The present invention relates to fabric grammes per square metre method and technology field, be specifically related to the method for setting machine control knit fabric grammes per square metre.
Background technology
When open-width predetermined needles knitted fabric, the patent door width of cloth and overfeed ratio have determined the grammes per square metre of the lower machine of typing.Take the spandex kind as example, the purpose that it is put in order through pre-setting: be to eliminate the internal stress of not dying cloth on the one hand, make the quality index such as the fabric door width of cloth, Gram Mass controlled; Make on the other hand goods possess outstanding size constancy (washing shrinkage), correcting fiber is subject in the fabrication processes distortion, wrinkle, elimination weaves in the processing inside of fabric to make supporting movement to cut off enemy power irregular, cloth cover is smooth when guaranteeing dyeing, prevents from breeding in the dyeing course generation barriness, folding line and shank trace etc.The process control of pre-setting just seems and is even more important like this, and the finished product grammes per square metre CCP of grey cloth is just in the pre-setting operation.
In the normal productive process, the control of the grammes per square metre of spandex undershirt cloth is default by overfeed ratio, gets grammes per square metre behind the lower machine of predetermined grey cloth typing, and overfeed ratio is revised again, and the control method of grammes per square metre is in the Passive Control state.Production process can occur because of the overfeed ratio adjustment, and the unstable of grammes per square metre occur, and process control procedure is in fully passive.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can predict in advance the value of overfeed ratio according to the fabric actual conditions, the typing overfeed ratio is controlled, thereby so that the method for the setting machine control knit fabric grammes per square metre of technical process is stablized, is easy to control to grammes per square metre.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: the method for setting machine control knit fabric grammes per square metre, and the step that comprises has: the speed of a motor vehicle of (1) described setting machine is 15 m/mins;
(2) according to the grammes per square metre of described knit fabric, converse the vertical close PaH of lower machine of described knit fabric, described PaH span 23.4 coils/centimetre～37.1 coils/centimetre;
(3) before the first overfeed roller of described setting machine, measure into the vertical close PbJ of cloth, the span of described PbJ 21.8 coils/centimetre～33 coils/centimetre;
(4) the vertical close PaH of the lower machine in the described step (2) indulges close PbJ divided by the cloth that advances in the described step (3), converses rate of change, and the span of described rate of change is 98.2%～121.7%;
(5) described rate of change converses ratio divided by correction factor 1.04;
(6) 15 m/mins of the speed of a motor vehicle of described setting machine multiply by the linear velocity that described ratio obtains described the first overfeed roller, and the span of the linear velocity of described the first overfeed roller is at 13.7 m/mins～21.58 m/mins.
The present invention has following beneficial effect: the method for setting machine control knit fabric grammes per square metre of the present invention, according to the fabric actual conditions, predict in advance the value of overfeed ratio, the typing overfeed ratio is controlled, so that produce the control of overfeeding value rationally, the grammes per square metre of unknown fabric and known fabric is controlled more tended towards stability; The spinner is in operating process, and various fabrics can according to lower machine demand grammes per square metre, converse the setting process parameter easily.Utilize the method can take precautions against in advance and predict the fluctuation of grammes per square metre, more economical and practical.
Description of drawings
Fig. 1 is that knit fabric of the present invention advances cloth control schematic diagram.
Fig. 2 is the schematic diagram of knit fabric coil among the present invention.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
The method of setting machine control knit fabric grammes per square metre of the present invention, the step that comprises has: the speed of a motor vehicle of (1) described setting machine is 15 m/mins;
(2) according to the grammes per square metre of described knit fabric, converse the vertical close PaH of lower machine of described knit fabric, described PaH span 23.4 coils/centimetre～37.1 coils/centimetre;
(3) before the first overfeed roller of described setting machine, measure into the vertical close PbJ of cloth, the span of described PbJ 21.8 coils/centimetre～33 coils/centimetre;
(4) the vertical close PaH of the lower machine in the described step (2) indulges close PbJ divided by the cloth that advances in the described step (3), converses rate of change, and the span of described rate of change is 98.2%～121.7%;
(5) described rate of change converses ratio divided by correction factor 1.04;
(6) 15 m/mins of the speed of a motor vehicle of described setting machine multiply by the linear velocity that described ratio obtains described the first overfeed roller, and the span of the linear velocity of described the first overfeed roller is at 13.7 m/mins～21.58 m/mins.
Because the adjustment of typing overfeed ratio can change the proportionate relationship of wet cloth work feed speed and the speed of a motor vehicle, thereby reaches the grammes per square metre that changes machine under the pre-setting.Take Bruckner open-width setting machine as example, as shown in Figure 1.
Generally in the pre-setting process, the speed of a motor vehicle of typing, advance cloth rewinder roll A1 and to advance cloth rewinder roll B2 overfeed ratio relative fixing, only change and advance cloth rewinder roll C3 overfeed ratio, thereby reach the purpose of adjusting grammes per square metre.Under typing speed of a motor vehicle fixing situation, set the value of different overfeed roller C3, measure the corresponding with it linear velocity of advancing cloth rewinder roll A1.Analyze ratio such as following table one between different overfeed ratios and the change speed:
(ratio=the advance cloth rewinder roll A linear velocity ÷ typing speed of a motor vehicle * 100%)
When producing with veriety, the cloth density that advances of grey cloth is relatively stable.Just by changing the value of typing machine overfeed ratio, change the density behind the upper machine of typing.Be that overfeed ratio is larger, the density value behind the upper machine is larger, and the grammes per square metre of the lower machine of typing is heavier; Otherwise overfeed ratio is less, and the density behind the upper machine is less, and the grammes per square metre of the lower machine of typing is lighter.Secret degree under cloth density and the typing is advanced in the measurement of A place before advancing cloth rewinder roll, and the ratio of density should become certain corresponding relation with this position linear velocity ratio.
The present invention washs spandex undershirt cloth as example take the cotton spandex undershirt cloth of 40sJC+20D, the cotton spandex undershirt cloth of 30sJC+30D, 75D+30D respectively, sets respectively three kinds of different overfeed ratios, and test comparison is measured machine density value under density and the typing, test data such as following table two advancing Bu Chu:
Table one is as follows with table two binding analysis:
In the situation of same overfeed ratio, the PaH/Pbj ratio of different fabrics approaches;
Ratio in ratio and the table one in the table two is compared, in the situation of overfeeding term harmonization, the certain proportion relation is arranged between the two, two table Data Comparisons: ratio/ratio=1.04 are set as correction factor with it;
Table one ratio data is converted rate of change such as following table three after revising: (rate of change=ratio * 1.04) by correction value
Because proportional between density and the grammes per square metre, in the certain situation of the door width of cloth, vertical close value is larger, grammes per square metre is larger, and vertical close value is less, and grammes per square metre is lighter, proportional relation.As shown in Figure 2, be 1cm
2The coil schematic diagram does not change in the situation of fabric and lateral density, and grammes per square metre only becomes corresponding relation with density.
Can according to the lower machine grammes per square metre condition of lower machine demand, extrapolate corresponding lower machine demand density.Projectional technique is as follows, take knitting latitude plane material as example.
The present invention converses the density of machine needs under the needs by known weaving process condition, yarn count and predetermined fabric width according to machine grammes per square metre under setting.It is as follows to convert:
Grammes per square metre=vertical is close * horizontal close * single coil weight * (1-coefficient) ÷ 100 ÷ ratios
Grammes per square metre: machine grammes per square metre under the pre-setting, the g/m of unit
2
Vertical close and horizontal close: be expressed as the unit line number of turns in the 1cm, unit is line/cm;
Single coil weight: according to weave parameter, yarn count thickness converts;
Coefficient: type-approval process regain and finish volatilization loss rate;
Ratio: this raw material proportion.
By the exchange of formula actual density and grammes per square metre, set lower machine grammes per square metre and the door width of cloth, needing can obtain lower secret degree.
Typing preparation, the present invention is measured before overfeed roller A1 into cloth density PbJ, converses the density PaH of lower machine according to corresponding grammes per square metre, converses rate of change: rate of change=PaH/PbJ, in table three, find with it corresponding overfeed ratio setting value, guarantee the grammes per square metre value that lower machine obtains presetting.
The overfeeding value of typing is set the limiting value that is in fabric, and when excessive or excessively low such as the overfeeding value, this conversion method need adjust in addition.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. setting machine is controlled the method for knit fabric grammes per square metre, and it is characterized in that the step that comprises has: the speed of a motor vehicle of (1) described setting machine is 15 m/mins;
(2) according to the grammes per square metre of described knit fabric, converse the vertical close PaH of lower machine of described knit fabric, described PaH span 23.4 coils/centimetre～37.1 coils/centimetre;
(3) before the first overfeed roller of described setting machine, measure into the vertical close PbJ of cloth, the span of described PbJ 21.8 coils/centimetre～33 coils/centimetre;
(4) the vertical close PaH of the lower machine in the described step (2) indulges close PbJ divided by the cloth that advances in the described step (3), converses rate of change, and the span of described rate of change is 98.2%～121.7%;
(5) described rate of change converses ratio divided by correction factor 1.04;
(6) 15 m/mins of the speed of a motor vehicle of described setting machine multiply by the linear velocity that described ratio obtains described the first overfeed roller, and the span of the linear velocity of described the first overfeed roller is at 13.7 m/mins～21.58 m/mins.
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| CN201210414600.3A CN102888733B (en) | 2012-10-25 | 2012-10-25 | Method for controlling gram weight of knitted fabric based on setting machine |
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| CN201210414600.3A CN102888733B (en) | 2012-10-25 | 2012-10-25 | Method for controlling gram weight of knitted fabric based on setting machine |
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| CN102888733A true CN102888733A (en) | 2013-01-23 |
| CN102888733B CN102888733B (en) | 2014-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894793A (en) * | 2015-04-15 | 2015-09-09 | 华侨大学 | Real-time control method of gram weight of knitted fabric in thermoforming and system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040229538A1 (en) * | 2003-05-15 | 2004-11-18 | Love Franklin S. | Woven stretch fabrics and methods of making same |
| CN201512681U (en) * | 2009-09-10 | 2010-06-23 | 绍兴中纺院江南分院有限公司 | Pilot test setting machine with overfeed device |
| CN102435762A (en) * | 2011-09-19 | 2012-05-02 | 江苏金辰针纺织有限公司 | Method for measuring and calculating overfeeding by using density ruler |
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2012
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040229538A1 (en) * | 2003-05-15 | 2004-11-18 | Love Franklin S. | Woven stretch fabrics and methods of making same |
| CN201512681U (en) * | 2009-09-10 | 2010-06-23 | 绍兴中纺院江南分院有限公司 | Pilot test setting machine with overfeed device |
| CN102435762A (en) * | 2011-09-19 | 2012-05-02 | 江苏金辰针纺织有限公司 | Method for measuring and calculating overfeeding by using density ruler |
Non-Patent Citations (1)
| Title |
|---|
| 魏福宝: "经编织物干克重控制的探讨", 《针织工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894793A (en) * | 2015-04-15 | 2015-09-09 | 华侨大学 | Real-time control method of gram weight of knitted fabric in thermoforming and system thereof |
| CN104894793B (en) * | 2015-04-15 | 2017-03-22 | 华侨大学 | Real-time control method of gram weight of knitted fabric in thermoforming and system thereof |
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| CN102888733B (en) | 2014-06-25 |
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Address after: The road north of the city streets Rugao Yishou road 226500 city in Jiangsu province Nantong City No. 666 Patentee after: Jiangsu Tamus Textile Technology Co., Ltd Address before: 226572 Jiangsu city of Nantong province Rugao city town longevity Road No. 666 Patentee before: Nantong Times Clothing Co., Ltd. |
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