CN202898688U - Air-jet loom high-speed weft insertion collector device - Google Patents

Abstract

The utility model provides an air-jet loom high-speed weft insertion collector device. A group of fixed main sprayers are additionally arranged between a swing main sprayer and a weft accumulator of an air-jet loom, and air is supplied for the two groups of main sprayers simultaneously by one main spraying magnetic valve. The air-jet loom high-speed weft insertion collector device has the advantages that by means of the method that stressed areas of initial stage of weft insertion of weft yarn are increased, using efficiency of compressed air is improved, traction force bore by per unit length in a main spraying pipe of the weft yarn is reduced, and therefore the good effects that air consumption is reduced and blowing off quantity of the weft yarn by the main sprayers is reduced are achieved when the initial speed of the weft yarn is improved.

Description

A kind of air-jet loom high speed wefting insertion collector device

(1) technical field

The utility model belongs to field of textile machinery, particularly relates to a kind of air-jet loom high speed wefting insertion collector device.

(2) background technology

At present, the domestic air-jet loom of weaving enterprise's production and application, the difference of technology level of its equipment is very large.Roughly can be divided into two large classes: a class is " low speed " air-jet loom---the jet automatic weft thread-leading machine that last century end produced in the past; Another kind of is " at a high speed " air-jet loom---the jet automatic weft thread-leading machine of producing so far the beginning of this century.For " low speed " air-jet loom, because the domestic different situations of respectively using producer, this type loom also was difficult to step down from the stage of history fast within a period of time in the future.And the core in this type of " low speed " air-jet loom---air weft insertion system is compared with novel " at a high speed " air-jet loom and is existed the shortcoming that the air energy consumption is high, output is low.And for the novel high speed loom, the requirement to the weft yarn semi-products under the prerequisite of high speed wefting insertion also is very high, and this has also improved many resultant yarn manufacturing costs to a certain extent.

(3) summary of the invention

The weak point that exists in order to overcome existing air-jet loom high speed wefting insertion, the utility model provides a kind of air-jet loom high speed wefting insertion collector device, and this device custom is called " some dual controls " device.

The main purpose of exploitation " some dual controls " device:

1, under the prerequisite that guarantees the original level of production of production equipment, reduce the consumption level of equipment working state compressed air, reach energy-saving and cost-reducing purpose.

2, because this device has the minimizing air to the effect of weft yarn injury, therefore can reach within the specific limits the purpose of raising loom revolution, the technical scope that enlarges the broadwise yarn count and reduction yarn manufacturing cost.

The technical solution of the utility model is to realize like this.

The air-jet loom high speed wefting insertion collector device of this programme, its structure are to have installed one group of fixedly main burner between the swing main burner of air-jet loom and weft accumulator additional, and these two groups of main burners are simultaneously by a main jet electromagnetic valve air feed.

Usefulness of the present utility model is: this device improves arriving of compressed-air actuated utilization rate by increasing weft yarn in the mode of the lifting surface area of wefting insertion starting stage, reduces simultaneously weft yarn suffered tractive force of unit length in the main jet pipe.Thereby reach and when improving the weft yarn initial velocity, reduce the little consumption of air, minimizing weft yarn are blown the number of times that breaks by main burner good result.

(4) description of drawings

Accompanying drawing 1 is improved structural representation.

Accompanying drawing 2 is the structural representation before transforming.

(5) specific embodiment

Below in conjunction with embodiment the technical solution of the utility model is described further.

One, technology contents

1, improvement and innovative point:

So-called " some dual controls " is exactly to have installed one group ' fixedly main burner ' between ' the swing main burner ' of air-jet loom and weft accumulator additional, and these two groups of main burners carry out air feed by a main jet electromagnetic valve simultaneously.

2, technical process explanation:

The main reforming content of this invention: take " some dual controls " that realize main burner as means, by on the supply air line of one group of main burner, adding again one group of fixedly method of main burner, can satisfy raising weft yarn flying speed and reduce air consumption, reduce the weft yarn injury.

This working of an invention process:

⑴, energy consumption level and the production status of " low speed " air-jet loom before transforming are carried out complete investigation, and survey data is carried out classification analysis.

⑵, random choose board carry out preliminary examination with machine on the device for modifying.

⑶, expanding test board quantity, detail record testing machine number of units certificate; State on the machine of analysis contrast test board, and in testing stand normal operation process, carry out a series of on-line monitoring test.

⑷, analysis be the complete test process relatively, and the compare of analysis of making corresponding test.

3, concrete experimentation:

⑴ the energy consumption data before, the transformation detects and statistical conditions (energy consumption measurement instrument: air gauge)

The test type: Toyota's 500 type air-jet looms,

Testing location: A weaves workshop (this workshop has 600 air-jet looms), B weaves workshop (this workshop has 450 air-jet looms);

Test kind: fine cloth veriety (JC80S, JC60S, JC50S)

Annotate: it is comparatively single that B weaves workshop test kind, take JC80 as main; A weaves and contains above three kinds of yarns in the workshop test kind and knit scope.

The test number of units: A weaves the workshop: the test number of units: 60, and totally 164 of this types, the test ratio accounts for 36.5%.B weaves the workshop: the test number of units: 25, and totally 32 of this types, the test ratio accounts for 78.1%.

Tester table revolution: (rpm)

A weaves the workshop: average revolution 614.7rpm; Maximum speed 641rpm; Minimum revolution 605rpm.

B weaves the workshop: average revolution 614.2rpm; Maximum speed 624rpm; Minimum revolution 605rpm.

Tester table air pressure: (MV: main burner; RV: auxiliary jet)

A weaves the workshop: MV average gas pressure 2.59bar; RV average gas pressure 4.01bar.

B weaves the workshop: MV average gas pressure 2.34bar; RV average gas pressure 3.96bar.

⑵, device for modifying computer experiment process (because that A weaves board number and the variety range in workshop is wider, thus testing location be chosen as one weave carry out)

1. preliminary examination:

Change front state: plane No.: 50#;

Change front state: machine; Change front kind: 01-4; Change front efficient (24h): 92.7%; Transform time spent: 25min; Loom revolution: 632rpm; TO:90 °; TW:225 °; MV:2.2bar; RV:5.12bar; MTt:75 °; RVt:60 °-80 °.

Illustrate: TO: the initial flight time of weft yarn; TW: weft yarn time of advent; MTt: main burner injecting time; RVt: auxiliary jet injecting time.

Change rear state:

Loom revolution: 632rpm; Change rear kind: 01-4; Change behind efficiency (24h): 93.6%; TO:95 °; TW:225 °--227 °; MV:1.9bar; RV:3.54bar; MTt:75 °; RVt:60 °-80 °.

Change rear running and quality condition: in rear 4 days time of transformation, this device 24h continuous operation on machine is all right, without fault midway; Cloth machine average efficiency can maintain the per day efficient of 92.5%(5, comprising once going up axle midway); Lower machine steady quality all reaches the Grade A requirement.

Since on the first chassis the machine process comparatively smoothly and work well, the machine that therefore respectively 105#, 106# has been carried out this transformation again in the time is subsequently tested.Experimentation there is no larger difference with identical and experimental result is also basic identical with the effect that reaches before before on the machine.In addition, because the main jet electromagnetic valve that 105#, 106# belong to JC80 kind and these two looms is through transforming (on the machine or original-pack old type electromagnetic valve), when computer experiment major and minor jet drops amplitude with compare before relative slightly smaller, but its weft yarn state of flight good (stroboscope is observed synchronously); The 24h working order is normal and without lower machine quality problems.

2. many covering devices are gone up the machine situation simultaneously

By the analysis to the preliminary examination effect, prepared again subsequently the needed device for modifying of this project of many covers, and the labor (floor-to-floor time is random choose above two weeks and selected board all) of situation on the Contrast on effect of machine and the machine on when machine carries out multiple computer desk.

28# board: kind: the 93-02(JC60 fine cloth);

88# board: kind: the 03-275(JC80 fine cloth);

137# board: kind: the 93-02(JC60 fine cloth).

Situation, loom running efficiency and lower machine quality all can reach former board level and also improve to some extent than former board on the improved machine of above board.

Below be to transform board, the concrete analysis of correctional effect to these several.

A, this device subtract the consumption effect comparatively obviously and make the weft yarn state of flight stable the step-down that high tolerance consumes board.

Take the 137# loom as example:

Before the transformation: loom efficiency: 88.4%.

Loom revolution: 624rpm	TB1:88°
		M V: 2.95bar	TB2:140°
R V: 4.2bar	TB3:186°
		T O: 80°	TBW:220°
T W: 235°	T W:235°

From upper table, be not difficult to find, loom each yarn circle that weft accumulator detects in the wefting insertion process to put the latitude time difference larger, this flight that has also shown this board weft yarn in the wefting insertion process is to be in a kind of unsure state, it is to rely on larger air-flow that its pressure is escorted weft yarn to going out shed open, and is not to rely between good nozzle act and each nozzle to cooperatively interact.This state is easy to cause the increase of the disconnected number of times of latitude and the appearance of fabric defect.

After the transformation: loom efficiency: 89.6%.

When loom wefting insertion technique not being done any adjustment, directly start the loom button and drive.The TW time of loom has original 235 ° to advance to 223 °, nearly like this time of advent of weft yarn has been shifted to an earlier date about 10ms, and this just provides good condition for the technique adjustment on the machine.

Change rear technique adjustment:

Loom revolution: 624rpm	TB1:90°
		M V: 2.20bar	TB2:136°
R V: 3.5bar	TB3:178°
		T O: 90°	TBW:215°
T W: 227°	T W:227°

From changing rear situation (seeing the above table), weft yarn can evenly be put latitude with the time (10.5ms) of about 40 ° of every weekly intervals, and weft yarn state of flight stable (stroboscope observation).Can draw thus, this device is to lowering the board air consumption, stablizing the weft yarn state of flight and have good effect.After changing, the operating condition in continuous 10 days of this board is stablized fault-free; Average loom efficiency reaches 92.3%; Lower machine quality all is in comparatively stable state, and First Grade Percentage Before Cloth Repairing reaches 95.3%.

B, this device to reduce loom TOOLONG---the broken end number of times of long latitude has good effect.

Take the 28# loom as example:

Before the transformation: loom efficiency: 91.2%.

Loom revolution: 623rpm	TB1:85°
		MV: 2.03bar	TB2:135°
RV: 3.76bar	TB3:183°
		TO: 85°	TBW:225°
TW: 240°	TW:238°

After the transformation: loom efficiency: 94.0%.

After wefting insertion technique is done corresponding the adjustment on the machine

Loom revolution: 623rpm	TB1:86°
		MV: 1.8bar	TB2:134°
RV: 3.5bar	TB3:182°
		TO: 85°	TBW:223°
TW: 237°	TW:237°

Change front loom efficiency:

Date	WFE	WWF	WAR	%
					8-27	29-00:43	49-I:17	8-00:13	89.7%

Change rear cloth machine effect:

Date	WFE	WWF	WAR	%
					8-29	38-1:14	25-00:49	6-00:17	90.6
8-31	30-00:51	19-00:44	11-00:41	89.7
					9-1	33-00:35	24-00:33	5-00:11	94
9-2	33-00:44	6-00:9	18-1:04	91.4
					9-3	26-00:25	10-00:10	5-00:19	96.1

Before top changing and the contrast of the wefting insertion technique after changing, change front and change after the analysis of loom efficiency correction data can find out, the loom efficiency after changing at the broken end number of times of steady and long latitude also in obvious decline.The long latitude broken end number of times that changes rear cloth machine with change before compare fall about 30%.Therefore this device is to solving high long latitude broken end board successful, and the weft yarn brute force is irregular certain effect to solving.

But C, this device Effective Raise cloth machine revolution.

Take the 88# loom as example:

Before the transformation: loom efficiency: 87.4%; MV:1.92bar; RV:3.83bar; TO:90 °; TW:225 °; Revolution: 607rpm.

After the transformation: loom efficiency: 91.4%.

The weft yarn of loom shifts to an earlier date 6 ° the time of advent--and 8 °,

Afterwards technique on the machine is adjusted: MV:1.72bar; RV:3.45bar; TO:90 °; TW:225 °; Revolution: 607rpm.

4, structure forms and distinguishing characteristics

Accompanying drawing 1 is improved structural representation, and wherein No. 2 arrow indication places are exactly ' fixedly main burner ' device that increases in this time transforming.

Accompanying drawing 2 is the structural representation before transforming, and wherein No. 5 arrow indication places are exactly ' balloon breaker ' that will pass when transforming front weft unwinding.

Analyze by reference to the accompanying drawings, the balloon breaker in the accompanying drawing 2 when weft unwinding and the friction between the weft yarn comparatively violent, and this device is large on the injury of weft yarn and the withdrawal speed when affecting weft unwinding; And the effect that ' fixedly main burner ' in the accompanying drawing 1 plays in the weft unwinding process is auxiliary ' swing main burner ' and carry out simultaneously wefting insertion action with it.

Can obtain such result from above analysis: improved " some dual controls " device can improve the flying speed of weft yarn; That is to say that this device can save the air use amount for wefting insertion.

Two, operation principle and the course of work

1, operation principle:

⑴, the mode of lifting surface area improves the flying speed of weft yarn when increasing weft unwinding, thereby reaches the effect of saving air consumption.

⑵, the air major parameter relevant with air consumption when work has: air themperature (℃), air originates pressure (bar), pipe diameter (mm), working time etc.Other each major parameters all remain unchanged because this device just makes this parameter of air pressure be descended behind upper machine, so the energy-saving effect of the present invention is comparatively obvious.

2, the course of work:

The structure of this device and the course of work are comparatively simple, and all action all is by the master control point---the main jet electromagnetic valve is controlled, and to reach " some dual controls " truly, need not to increase more automaton.

Claims (1)

1. air-jet loom high speed wefting insertion collector device, it is characterized in that: the structure of this device is to have installed one group of fixedly main burner between the swing main burner of air-jet loom and weft accumulator additional, and these two groups of main burners are simultaneously by a main jet electromagnetic valve air feed.

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