CN1425816A - Pick control method and device - Google Patents
Pick control method and device Download PDFInfo
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- CN1425816A CN1425816A CN 02154373 CN02154373A CN1425816A CN 1425816 A CN1425816 A CN 1425816A CN 02154373 CN02154373 CN 02154373 CN 02154373 A CN02154373 A CN 02154373A CN 1425816 A CN1425816 A CN 1425816A
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
- D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
- D03D47/3026—Air supply systems
- D03D47/3053—Arrangements or lay out of air supply systems
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Abstract
The weft insertion method which controls the jet stream from the weft insertion nozzle by generating a command signal on an opening grade to a throttle valve linked to the weft insertion nozzle according to the set jet-patterns, detects the arrival timing of the weft in flight according to a signal detecting the weft from a weft sensor, and corrects the opening command signal according to a deviation of the detected arrival timing to a standard timing. It is capable of quickly correcting jet a stream from a weft insertion nozzle responding to the state of the weft in flight.
Description
Technical field
The present invention relates to control in the fluid jet type weaving machine that adopts the such pressure fluid of pressure air or press water control device from the fluid jet of Weft insertion nozzle.
Background technology
As one of picking control technology of fluid jet type weaving machine, the method (the Japan Patent spy opens clear 53-10757 communique, special public clear 57-55813 communique) that has the choke valve that adopts cam control that injected jet flow of coming out from Weft insertion nozzle is adjusted.In this background technology, the aperture of choke valve in a picking cycle is by the shape decision of cam, thereby control is from the jet flow of Weft insertion nozzle.
Yet, in the above-mentioned background technology,, have to change cam self in order to change from the spray pattern of the fluid of Weft insertion nozzle injection, therefore change the operation trouble.In addition, because can not freely set spray pattern, so a cam can only be used for the picking control of specific parallel impracticable.
In addition, can consider to utilize selectively a plurality of jet types of freely setting to drive choke valve, thus the method for control jet flow.Yet, in such technology, even set jet type rightly for parallel, because the situation that flies of parallel changes constantly, therefore also can't keep and the corresponding appropriate fluid jet of such variation, fluid that the waste picking uses or because excessive fluid jet and bring shortcoming such as damage to parallel are arranged.
The objective of the invention is to,, can make the jet flow of rapid revisal from Weft insertion nozzle according to the situation that flies of parallel.
Summary of the invention
The picking control method relevant with the present invention is a kind ofly according to the jet type of setting the choke valve that is communicated in Weft insertion nozzle to be sent aperture command signal and the control picking control method from the jet flow of aforementioned Weft insertion nozzle, comprise according to the due in that detects the parallel in the way of flying from the parallel detecting signal of parallel sensor, and the method for carrying out revisal with respect to benchmark deviation constantly according to the due in that is detected.
Picking control apparatus of the present invention is a kind of setting apparatus that is set with from the jet type of the fluid of Weft insertion nozzle that comprises; With the jet type that sets according to this setting apparatus, the choke valve that is communicated in aforementioned Weft insertion nozzle is sent aperture command signal and the control picking control apparatus from the control loop of the jet flow of aforementioned Weft insertion nozzle.Aforementioned control loop comprises, detects the due in of the parallel in the way of flying and calculates the due in that the detects deviation calculation portion with respect to benchmark deviation constantly according to the parallel detecting signal from the parallel sensor; According to the deviation of calculating, send revisal signal generation for the revisal signal of aforementioned choke valve; According to the aforementioned aperture command signal of aforementioned revisal signal correction, will be through the signal of revisal as the correcting section of exporting for the new aperture command signal of aforementioned choke valve.
Here said " aperture command signal " is the signal of the opening degree when instructing choke valve to be in out state, and in other words, jet type does not comprise aperture 0, i.e. full-shut position.
Adopt the present invention, jet type according to the parallel that is suitable for answering picking, control in the same picking cycle injection flow by choke valve from Weft insertion nozzle, therefore can promptly carry out the flow adjustment, and can under the situation of parallel not being brought damage, carry out picking by setting appropriate jet type.In addition owing to be to control jet flow according to the situation of flying of parallel, even thereby the situation of flying of parallel change, the moment that also can make parallel arrive institute's allocation keeps certain, and can adopt appropriate jet flow to carry out picking always.
The parallel sensor can comprise detecting from surveying long storage and stay device to be separated the easypro sensor of separating of easypro parallel, perhaps, is disposed at fly parallel sensor in the path of parallel in the shedding that should detect the parallel in the picking way.
Weft insertion nozzle comprises the nozzle of swimming under the in-position of the parallel front end that is disposed at when detecting due in, and the control of aforementioned jet flow can comprise the method for aperture that is communicated in the choke valve of aforementioned nozzle according to aforementioned aperture command signal adjustment through revisal.
Aforementioned Weft insertion nozzle is included in a plurality of nozzles that leave arranged spaced on the direction that flies of parallel, and the control of aforementioned jet flow can comprise the method for aperture of adjusting the choke valve that is communicated in the nozzle that sprays fluid and being communicated in the choke valve of the nozzle that will spray fluid according to aforementioned aperture command signal through revisal.
The arrival angle detector that the angle of revolution of the main shaft when aforementioned deviation calculation section comprises aforementioned parallel detecting signal input detects as aforementioned due in and the calculation loop that the due in that detects and benchmark are constantly compared and calculated aforementioned departure; Aforementioned revisal signal is sent in the departure that aforementioned revisal signal generation provides according to aforementioned calculation loop and the angle of revolution of aforementioned main shaft, and aforementioned correcting section comprises the controller of the aforementioned aperture command signal that the jet type output that sets according to aforementioned setting apparatus is corresponding with aforementioned main shaft gyration angle and to carrying out the addometer that aforementioned new aperture command signal is exported in add operation from the aperture command signal of this controller with from the aforementioned revisal signal of aforementioned revisal signal generation.
Description of drawings
Fig. 1 is that expression is relevant of the present invention, has been equipped with the figure of an embodiment of the air injection type loom of picking control apparatus.
Fig. 2 is the figure of an embodiment of the control loop of expression picking control apparatus shown in Figure 1.
Fig. 3 is the figure of the jet type embodiment of expression picking control apparatus shown in Figure 1.
Fig. 4 is the figure of an embodiment of the revisal amount set in the representative function setting apparatus.
Fig. 5 is the figure of an embodiment of other revisal amount of setting in the representative function setting apparatus.
Fig. 6 is the figure of expression from an embodiment of the revisal signal of revisal signal generation output.
Fig. 7 is the figure that represents to use by the sub-nozzle group that picking control apparatus carries out the control example of choke valve.
The specific embodiment
With reference to Fig. 1, use the air injection type loom 10 of fluid as picking with compressed air, stay device 16 with twisting in to the long storage of the 14 importing surveys of the parallel on the line body 12, and 1 parallel 14 storage of throwing a spear above length stayed in surveying long storage stay device 16, the parallel 14 kept of storage is throwed a spear to separating and is relaxed out by separating the pin 18 each 1 that relaxes, separated easypro parallel 14 by main burner 20 and a plurality of sub-nozzle 22 pickings in the opening of warp 24, before knitting, made reed by the parallel 14 of picking by reed 26.
The parallel 14 of being made reed the fixed moment cut off (only having drawn 1 among Fig. 1) by the cutteves 30 that are disposed at 28 each end of weaving cotton cloth cutter.By this way, having weaving cotton cloth of institute's Fixed width degree size 28 is knitted to make and.
Whether parallel 14 can be judged according to the detecting signal of the probe more than 1 (not shown) that is disposed at picking side offside by correct picking.Fail the parallel of correct picking, remove from picking side offside by the unillustrated device of removing among the figure.
In the loom 10, the revolution of main shaft 32 is detected by encoder 34, exports the various loops and the device of loom to from encoder 34 with the corresponding angle of revolution of the revolution of main shaft 32 signal θ.
As the compressed air of picking with fluid, be that compressed air source 36 is supplied with main burner 20 through choke valve 38 from common fluid supply source, supply with a plurality of sub-nozzles 22 by a plurality of choke valves 38 simultaneously.Say that in more detail be disposed at the interior sub-nozzle of shedding 22 each configuration place as one group, compressed air is supplied with sub-nozzle 22 by the choke valve 38 that each group is disposed.
Each choke valve 38 is well-known valve system with valve seat and valve body, and valve body is driven by electric controllers such as servo motors.The revolution amount and the speed of gyration of this electric controller are controlled by picking control apparatus 40.
In the loom 10, on the fluid passage between compressed air source 36 and main burner 20 and the sub-nozzle 22, dispose choke valve 38, but do not dispose switch valve.Therefore, the open amount of choke valve 38 is that aperture is controlled by picking control apparatus 40.By this way, the Fluid Volume (air supply) that ejects from main burner 20 and sub-nozzle 22 is adjusted to suitable value.
Parallel 14 is stayed on the cylinder of device 16 around surveying long storage with the form of multi-turn, and the locking of locking pin 18 is opened during picking, and parallel 14 stays the device 16 and drawn from surveying long storage under the injection stream effect of main burner, and picking is in shedding.After this, parallel 14 locks once again by separating the locking pin 18 that relaxes sensor or pass in and out by the predetermined suitable moment, and 1 long parallel of throwing a spear is separated and relaxed out.
In illustrated example, the storage of the parallel of 1 the above length of throwing a spear is stayed the long storage of survey and is stayed on the cylinder of device 16, and 1 long parallel of throwing a spear is separated easypro during picking; Stay the cylinder of device 16 to rotate but also can in picking, make to be involved in to come from, with the part of the parallel that newly is involved in a part as the used parallel of this picking to the long storage of the survey of the parallel of line body 12.No matter under any situation, in picking, parallel 14 is not restrained to the long storage of survey and stays device 16, but can freely fly.
Be subjected to surveying long storage at parallel and stay the constraint of device to fly, under the situation that promptly so-called constraint is flown, parallel can bring damages such as broken string to parallel because constraint is in the overtension state.Yet,, just can not bring such damage to parallel if flying of parallel freely freely flown.
Parallel 14 is subjected to the sedimentation exhalation from Weft insertion nozzle, and each circle is drawn from surveying to grow to store up to stay the device 16.The every circle of derivative parallel once detects by separating the sensor 42 that relaxes.The parallel detecting signal S1 that explains the sensor 42 that relaxes by oneself is supplied to the various loops and the device of picking control apparatus 40 and loom 10.
Stay device 16 to separate the easypro parallel number of turns to be associated from surveying long storage with the front position of parallel, therefore, in illustrated example, explain the parallel detecting signal S1 of the sensor 42 that relaxes by oneself, in picking control apparatus 40, be used as the front end that detects parallel 14 arrives the due in of institute's allocation in the picking way signal.
Picking control apparatus 40 comprises: setting apparatus 44, and it selects signal S2 to set the jet type of the fluid of a plurality of Weft insertion nozzles in the picking cycle to each; Control loop 46, the jet type that its uses setting apparatus 44 to set sends the aperture command signal to a plurality of choke valves 38 that are communicated in Weft insertion nozzle 20,22, and to revise be this aperture command signal of revisal, and control is from the jet flow of Weft insertion nozzle 20,22.
Predefined each jet type S3 represents in a picking cycle Fluid Volume that sprays from main burner 20 and each sub-nozzle 22 degree over time in the setting apparatus 44, the flow that arrives standing state from injection beginning when promptly representing injection beginning increases, or sprays when finishing to arrive from standing state and spray the changes in flow rate degree that the flow that finishes reduces.
Can adopt and specify picking to select signal with the parallel of parallel kind, the tach signal of perhaps representing the delay of weaving machine turning speed is as selecting signal S2.Therefore, select signal parallel of picking (each can) and each tach signal, in setting apparatus 44, set jet type respectively for each parallel.
In addition, in control loop 46,,, preestablished the easypro and locking moment of separating of parallel corresponding to the conditions such as rotating speed of selected parallel and loom by unillustrated setting apparatus among the figure; Control loop 46 sends the driving command signal S4 of control locking pin action according to selection signal of receiving and tach signal θ.
Specifically, control loop 46 at first reads corresponding to the angle of revolution signal θ that is received and selects the jet type S3 of signal S2 from setting apparatus 44, produces the aperture command signal of the aperture of each choke valve 38 of control according to the jet type S3 that is read.
Then, control loop 46 front end that detects parallel 14 according to the angle of revolution and the parallel detecting signal S1 of main shaft 32 arrives the due in of institute's allocation; And calculate the due in that detected and its benchmark departure constantly.
Then, control loop 46 is corresponding to the departure of being calculated, the aperture command signal that jet type S3 according to the foregoing changes in flow rate degree of expression produces is carried out revisal, and will output to each electric controller of main burner 20 and each sub-nozzle 22 through the aperture command signal S5 of revisal.
In this way, within the same picking cycle, main burner 20 and each sub-nozzle 22 are driven, their aperture reaches the delay in the moment of institute's allocation according to the angle of revolution of main shaft 32 and parallel and changes, thereby the jet flow that main burner 20 and each sub-nozzle 22 spray changes rapidly.
Aperture command signal S5 has nothing in common with each other to each choke valve 38.Yet, the choke valve 38 that antithetical phrase nozzle 22 usefulness are all, aperture command signal S5 also can be identical.
Due in can be got and do the moment that the parallel front end arrives the picking half-way.For example, each picking is stayed the occasions of drawing 3 circle parallels the device 16 from surveying long storage, and such due in can be with the detecting signal S1 of the 1st circle or the 2nd circle parallel value as the θ of the angle of revolution signal when separating easypro sensor 42 and be input to control loop 46.The position of separating the sensor 42 that relaxes is not limited to the example among the figure, can be disposed at the optional position on resting barrel surface.
The aperture control of the choke valve 38 that is undertaken by control loop 46 is so that the control of jet flow, is to have carried out having detected in picking cycle of due in that the parallel front end arrives the picking half-way, rather than carries out in its next picking cycle.
Therefore, in the same picking cycle, the due in of parallel is detected, and in view of the above, changes corresponding to the angle of revolution of main shaft 32 and the due in of parallel from the fluid jet amount of main burner 20 and each sub-nozzle 22.
In sum, jet type according to the parallel that is suitable for answering picking, control in the same picking cycle injection flow by choke valve from Weft insertion nozzle, therefore can promptly carry out the flow adjustment, and can under the situation of parallel not being brought damage, carry out picking by setting appropriate jet type.In addition owing to be to control jet flow according to the situation of flying of parallel, even thereby the situation of flying of parallel change, the moment that also can make parallel arrive institute's allocation keeps certain, and can adopt appropriate jet flow to carry out picking always.
By control loop 46 carry out to the control of the aperture of choke valve 38 so that the control of jet flow, also can be configured in the parallel front position that has detected the time of advent under the choke valve 38 that is connected of the more than one sub-nozzle 22 of swimming carry out.
For example, in example shown in Figure 1, stay and draw 3 circle parallels the device 16 from surveying long storage during each picking, separate the sensor 42 that relaxes and send parallel detecting signal S1 when relaxing 1/2 circle parallel separating, at picking 1 circle, parallel arrives the 2nd group of sub-nozzle group's occasion from main burner 20 1 sides, also can carry out the control of aperture and jet flow to choke valve 38 that is connected with the sub-nozzle that is positioned at the 2nd group of sub-nozzle group downstream and the choke valve 38 that is connected with main burner.
But, also can carry out the control of aperture and jet flow to choke valve 38 that is communicated in the nozzle that sprays fluid and the choke valve 38 that is communicated in the nozzle that will spray fluid.Do like this, compare,, can expect to obtain bigger effect as the quantity increase of the choke valve (Weft insertion nozzle) of controlling object with previous example.
No matter be any control mode, the choke valve that carries out flow-control both can be the whole of above-mentioned choke valve as the control object, also can be 1 choke valve or the choke valve more than 2 among these choke valves.
As detecting the parallel sensor that the parallel front end is carved in arriving in the picking way, remove and understand the sensor 42 that relaxes, for example also can use the parallel that is disposed in the shedding to fly in the way on road, detect the parallel sensor of parallel front end.
No matter be any parallel sensor, all can adopt, and accept to be interdicted in the infiltration type sensor that detects parallel any one by parallel from the catoptrical reflective sensor of parallel with by light to the parallel irradiation to the parallel irradiates light.In addition, except above-mentioned optical profile type sensor, also can use other non-contact type sensor as the parallel sensor.
In the above-described embodiments, the present invention is applied to have the air injection type loom 10 of monochromatic weft insertion device, but the present invention also can be applied to have the air injection type loom of 2 looks above so-called polychrome weft insertion device.Under this occasion, parallel that can picking for each is equipped with respectively to the line body, surveys long storage and stays device, main burner and choke valve.
In the above-described embodiments, main burner and sub-nozzle group have been used choke valve respectively, but the present invention also can be only to changing the nozzle use choke valve more than 1 that the fluid jet amount is an amount of restriction in these choke valves.In addition, above-mentioned technology not only is applied to the injection control of Weft insertion nozzles such as main burner or sub-nozzle, can also be applied to the control from the fluid jet of eliminating lax other Weft insertion nozzles such as tensioning nozzle of parallel.
Secondly, with reference to Fig. 2, control loop 46 is described in more details.Represent among Fig. 2 be the present invention in the application examples that has on the air injection type loom of monochromatic weft insertion device, described monochromatic weft insertion device has adopted the choke valve 38 that is used for 1 main burner.
The valve portion that is formed by valve seat 50 and valve body 52 of each choke valve 38 drives the corresponding value of aperture instruction S2 that valve bodies 52 change to the aperture of valve portion to be supplied with control loop 46 by the electric controller 58 of correspondence between input port 54 and delivery outlet 56.
As the compressed air of picking with fluid, from input port 54 process delivery outlets, the 56 arrival Weft insertion nozzles of each choke valve 38, and injected from this Weft insertion nozzle.Being emitted dose from the injected compressed-air actuated spray volume of each Weft insertion nozzle is directly proportional with the aperture of corresponding choke valve 38.
In illustrated example, the valve body 52 with the threaded portion of matching with the female threaded hole of valve seat 50 rotates under the effect of electric controller 58, thereby moves switch valve part relative to valve seat 50 as straight line.But, also can use other choke valve.
Say that in more detail the structure of relevant choke valve promptly drives the mechanism that the relative valve seat of the valve body that should regulate jet flow is advanced and retreat, and also can adopt linear motor that valve body is directly advanced and retreat, and replaces the method for revolution adjusters such as above-mentioned employing threaded portion+motor.In other words, can adopt the well-known choke valve that can carry out jet flow adjusting (aperture adjusting) by the signal of telecommunication.
But electric controller 58 is the adjuster of the control phase as the impulse motor, but the perhaps adjuster of the control position as the servo motor is controlled by control loop 46.
In jet type setting apparatus 44, in a picking cycle, (θ 0 corresponding to each angle of revolution of main shaft for choke valve 38, θ 1, θ 2 ...) aperture (in other words, amount of restriction) be set with form as the jet type S3 of each choke valve 38 corresponding to the function f (θ) of the angle of revolution θ of main shaft 32.
Jet type S3 can suitably set, and for easily broken parallel, sets injection beginning for and the flow change rate when finishing should be mild, and for easily lax parallel, set for before it is about to by the warp constraint and should reduce flow hastily, or the like.
Fig. 3 is the embodiment of 1 jet type during the picking.The aperture fA of choke valve (θ) wherein, fB (θ), fC (θ) ... as each jet type, the angle of revolution of main shaft (θ) is as transverse axis.
The setup parameter of such jet type can comprise, be set in arbitrary value (for example, P1, P2 between 100% and 0%, the aperture of choke valve P3), and change to P1, P2, P3 as aperture with choke valve, the moment of P4 etc. (for example, ON1, ON2, OFF1 etc.) angle of revolution (θ) of the main shaft that is set.
Above-mentioned setup parameter P1, P2, P3, P4, ON1, ON2, ON3, the occurrence of OFF1 etc. can be at each jet type, considers conditions such as the kind of line and loom rotating speed, freely sets.
Pattern A is the rectangle spray pattern that is applicable to not easily broken common parallel.This pattern A for example, can be set at P1=50% and open (ON1) when spending in θ=60, can be set at P2=0% when spending in θ=200 and close (OFF1).
Pattern B is a spray pattern at easily broken weak parallel to E, also can be used for preventing the useless jet flow under the transition turn state when loom starts.
Aperture when pattern B is injection beginning for example, can be utilized ON1 and OFF1 among the pattern A with the example that certain increment rate α changes, and aperture is set from the 0% increment rate α 1 that arrives 50% (P1).
The example of the stepped variation of aperture when pattern C is injection beginning for example, can pass through aperture P1 (25%), P2 (35%), and P3 (50%) and P4 (0%), with the moment ON1 that should reach these opening values, ON2, ON3, OFF1 sets.
Pattern D is opposite with pattern B, aperture when being the injection end for example, can be utilized ON1 and the P1 of pattern A with the example that certain slip β changes, the moment OFF1 that aperture reduces to 0% (P2) since 50% (P1), and aperture arrives 0% slip β from 50% and sets.
Form E is the example that sprays the stepped variation of aperture when finishing, and for example, can pass through aperture P1 (50%), P2 (35%), and P3 (20%) and P4 (0%), with the moment ON1 that should reach these opening values, OFF1, OFF2 and OFF3 set.
About jet type, also can set by the method beyond aforementioned, be not limited to illustrated embodiment.Utilizing parallel to select signal, when switching jet type, also can adopt following pattern according to the kind of parallel.
1. for not easily broken common parallel, use the common pattern as pattern A.
2. for easily broken parallel, use as pattern B, C, D, E is such, begins to spray and changes in flow rate pattern slowly during end injection.
3. for lax easily parallel, use as pattern A the pattern that before being about to, flow is stopped rapidly by the warp constraint.
In addition, utilize tach signal, switch the occasion of jet type, also can use following pattern according to the kind of parallel.
4. under the transition state when starting,, can use C, can prevent from the to break pattern of the damage that brings that D is such as pattern B because the injecting time of the slow nozzle of the rotating speed of loom is elongated.
5. under normal turn state, use as the such pattern of pattern A.
Except the tach signal according to expression actual measurement rotating speed switches the jet type, in the time of can also starting as loom from starting to the time when reaching rated speed, for example the known occasion of number of pick is switched jet type according to the number of pick after starting.
In the above-described embodiments, be according to selecting signal to select kind, and then be the jet type that the rotating speed of loom sets, but also can be only select jet type corresponding in parallel or the rotating speed any one corresponding to parallel.In addition, under the situation of monochromatic picking, also can not use the selection signal, but when changing fabric, consider the kind of parallel, set a jet type according to a certain among above-mentioned jet type A～D, and use this jet type that choke valve 40 is carried out aperture control continuously.
A plurality of jet types of the jet flow rate of change of Fig. 3 when just expression has changed injection beginning and during injection flow, but also can be respectively when injection beginning and spray when finishing and use a plurality of jet types to control choke valve.
Under above-mentioned any one situation, both can set jet type respectively to each choke valve, also can set jet type more than a kind with choke valve to main burner, all choke valves that the antithetical phrase nozzle is used are set jet type shared more than a kind.
But, in the following description, suppose each choke valve set a plurality of jet types.
Again with reference to Fig. 2, control loop 46 comprises calculates that the parallel front end arrives the deviation calculation portion 60 of due in and its benchmark departure Δ θ between constantly in the picking way and to a plurality of throttle valve control portion 62 of each choke valve 38 outfit.
Deviation calculation portion 60 is according to the parallel detecting signal S1 that explains the sensor 42 that relaxes by oneself shown in Figure 1 with from the angle of revolution signal θ of encoder 44, detect the parallel front end by angle detector 64 and arrive due in θ s in the picking way, and calculate departure Δ θ between the benchmark moment θ st that the due in θ s that detected and benchmark configure in the setting apparatus 66 constantly by calculation loop 68.
For example, send expression the 1/2nd circle at the easypro sensor 42 of separating shown in Figure 1, the 3/2nd circle, under the situation of the parallel detecting signal S1 that the 5/2nd circle is wired separately, the value θ s of the angle of revolution signal θ in the time of the parallel detecting signal S1 of the 1/2nd circle or the 3/2nd circle can being issued is as due in θ s.
To each root parallel, set respectively in the setting apparatus 64 constantly for the benchmark of the due in of parallel front end etc.Benchmark can be same value constantly, also can be that various lines are got different values.In illustrated embodiment, all 1 benchmark pattern setting apparatus 64 of throttle valve control portion 62 common uses, but also can benchmark pattern setting apparatus 64 be set respectively to each throttle valve control portion 62.
Each throttle valve control portion 62 comprises with the lower part, shown in one of them: according to angle of revolution signal θ, select signal S3 and jet type S3, corresponding choke valve is produced the controller 70 of aperture command signal P1; Preestablished corresponding to the revisal amount f (Δ θ) of departure and corresponding to the function setting apparatus 72 of the revisal amount g (θ) of main shaft gyration angle; Produce the revisal signal generator 74 of revisal signal delta P; The addometer 76 that the output signal of the output signal of controller 70 and revisal signal generation 74 is carried out add operation; And the amplifier 78 that the output signal of the portion 76 that adds is amplified.
Controller 70 is according to the selection signal S3 of input, read and this selection signal S3 and choke valve 38 corresponding jet type S3 from jet type setting apparatus 44, and according to the jet type S3 that is read to the aperture command signal P1 of addometer 76 output corresponding to angle of revolution signal θ.
The not shown loom CRANK PULSES of expression loom operating condition has been imported into controller 70, therefore controller 70 carries out above-mentioned output when loom turns round, and become the situation of halted state according to the OFF of loom CRANK PULSES identification loom, thereby no matter how the angle of revolution of main shaft all stops jet flow, perhaps, also can be according in order to prevent that parallel from deviating from preestablishing that nozzle carries out and exporting the aperture command signal that should be reduced to micro-jet flow.
Predefined revisal amount f (Δ θ) and g (θ) can be corresponding to the sizes of departure Δ θ in the function setting apparatus 72, be set at the variable function of output level: when departure Δ θ is negative value (due in is early than benchmark constantly), the negative value of revisal quantitative change for corresponding throttle valve opening is reduced; When departure Δ θ for when (due in be later than benchmark constantly), the revisal quantitative change for should make that corresponding throttle valve opening increases on the occasion of.
As Fig. 4 (A) or (B), revisal amount f (Δ θ) can make and departure Δ θ and choke valve 38 corresponding revisal amounts, and the line kind of various possibility picking is set respectively.Fig. 4 (A) is revisal amount f (Δ θ) the function example that straight line changes that is directly proportional with departure Δ θ, and Fig. 4 (B) is the function example that departure f (Δ θ) changes corresponding to the stepped straight line of departure Δ θ.
As shown in Figure 5, revisal amount g (θ) can make corresponding with main shaft gyration angle θ and choke valve 38, is used for the revisal amount of revisal revisal amount f (Δ θ), and the line kind of various possibility picking is set respectively.In the example of Fig. 5, revisal amount g (θ) is such function: being conic section and changing till main shaft gyration angle θ arrives institute's definite value, is certain value subsequently.
Revisal signal generator 74 utilizes the angle of revolution signal θ of input, to each main shaft gyration angle, the corresponding revisal amount of the selection signal S2 f (Δ θ) and the g (θ) that from function setting apparatus 72, read and import, and come the revisal signal delta P of the aperture command signal P1 of self-controller 70 to output in the addometer 76 as revisal the revisal amount f (Δ θ) that read and the product of g (θ).
From the example of the revisal signal delta P of revisal signal generator 74 output as shown in Figure 6.The example of revisal signal delta P has been used revisal amount f (Δ θ) shown in Fig. 4 (A) and revisal amount g (θ) shown in Figure 5 among Fig. 6.Therefore, to conditions such as each parallel kind or loom rotating speeds, can be respectively in function setting apparatus 72, set the function corresponding to the revisal signal delta P of corresponding choke valve 38 of expressing as shown in Figure 6.
In illustrated example, function setting apparatus 72 and revisal signal generator 74 constitute revisal signal generation 80 and work.Not only can be equipped with revisal signal generation 80 respectively, and can in a plurality of throttle valve control portion 62, utilize same revisal signal generation 80 jointly each throttle valve control portion 62.
Under latter event, both can in function setting apparatus 72, set revisal amount Δ (θ) respectively to each throttle valve control portion 62, g (θ) also can utilize common revisal amount Δ (θ), g (θ) to a plurality of throttle valve control portion 62 in function setting apparatus 72.In addition, the revisal signal delta P of each throttle valve control portion 62 can be different value, also can allow a plurality of throttle valve control portion 62 utilize common revisal signal delta θ.
76 couples of P1 of addometer and Δ P two signals carry out add operation.By this way, utilize revisal signal delta P, and according to departure Δ θ, it is revisal that the aperture command signal P1 that comes self-controller 70 is revised.
The output signal of addometer 76 is sent to amplifier 78, and will measure corresponding drive current with the change of aperture instruction and be supplied in the adjuster 58 of corresponding choke valve 38 as new aperture command signal S5.Therefore, adjuster 58 rotations, the aperture of choke valve 38 changes, and consequently comes the jet flow of self-corresponding Weft insertion nozzle to be changed.
In the above-described embodiments, each choke valve 38 is equipped with throttle valve control portion 62 respectively, but also can have used a plurality of choke valves 38 of a throttle valve control portion 62 controls.In this case, aperture command signal S5 can be the value that has nothing in common with each other to each choke valve, also can use identical value to a plurality of choke valves.
The sub-nozzle group who utilizes above-mentioned picking control apparatus 10 with the control example of choke valve 38 as shown in Figure 7.In Fig. 7, (A) be jet type, be (B) (C) to be revised aperture command signal P1+ Δ P by revisal amount Δ P that (D) drive current of using for adjuster (E) is pressure waveform.
In order to alleviate the damage to parallel and warp, in the jet type of Fig. 7 (A), the flow change rate of injection beginning and ending phase is comparatively mild.
For aforesaid jet type,, produce revisal amount Δ P through the detection of parallel front end arrival angle.Say in more detail, if the due in of parallel late, then produce the revisal amount Δ θ shown in the solid line among Fig. 7 (B), the aperture command signal obtains revisal thus, shown in solid line among Fig. 7 (C), thereby the drive current shown in the solid line is supplied to adjuster among Fig. 7 (D), and the variation shown in solid line among Fig. 7 (E) takes place jet flow.
In contrast, if the due in of parallel early, then produce the revisal amount Δ θ shown in the dotted line among Fig. 7 (B), the aperture command signal obtains revisal shown in dotted line among Fig. 7 (C) thus, thereby the drive current shown in the dotted line is supplied to adjuster among Fig. 7 (D), and the variation shown in dotted line among Fig. 7 (E) takes place jet flow.
In sum, by promptly carrying out the flow adjustment, and set appropriate jet type, can under the situation of parallel not being brought damage, carry out picking.In addition, even the situation of flying of parallel changes, the moment that also can make parallel arrive institute's allocation keeps certain, and can adopt appropriate jet flow to carry out picking always.
Present embodiment can have following distortion.The number of the sub-nozzle 22 through organizing into groups can be according to fabric, and the kind of parallel etc. are suitably selected, and desirable way is if each sub-nozzle 22 is provided with choke valve 38 respectively, then can parallel not to be brought the control of damage.In addition, on the contrary, if simplify way, also can a choke valve be set to main burner and a part of choke valve, the Weft insertion nozzle that is controlled and the compound mode of choke valve are without limits.
Be equipped with the situation of the air injection type loom of polychrome weft insertion device, also can carry out the aperture and the jet flow control of choke valve according to the kind of parallel.In addition, control loop 46 can make and use a computer and the structure of software replaces as shown in Figures 1 and 2 hardware configuration.
The revisal amount f (Δ θ) that in the function setting apparatus, sets and (θ) in, both so-called not sensing zone can be set, promptly when due in be in benchmark constantly near the time do not carry out revisal the zone; Also so-called check strap can be set, promptly compare the zone of the very big time restriction revisal of distance amount constantly when due in and benchmark.
In the above-described embodiments, the due in of parallel is to determine as yardstick with the angle signal of main shaft; But also can determine with the time that begins from the main shaft angle that becomes benchmark.In addition, in the above-described embodiments, be to come revisal aperture command signal with respect to benchmark departure constantly according to the due in of parallel; Also can not adopt departure, but only according to due in respect to benchmark be constantly postpone or ahead of time this sooner or later information come revisal aperture command signal, among that this situation is also contained in is aforementioned " revisal of carrying out according to deviation ".For example, as information sooner or later, can in a plurality of scopes of throwing a spear, count with respect to benchmark number of times sooner or later constantly by the due in to parallel, and above-mentioned aperture command signal be carried out revisal according to this count results.
The present invention, in the above-described embodiments, deploy switch valve not on the fluid passage between compressed air source and the nozzle, but, the present invention both can dispose such switch valve on the fluid passage between compressed air source and the nozzle, and use the two control fluid jet amount, also can make during picking by such switch valve in opening aforesaid fluid path.
The invention is not restricted to the foregoing description.Only otherwise break away from its aim, the present invention can have all changes.
Claims (6)
1. one kind according to the jet type of setting, and the choke valve that is communicated in Weft insertion nozzle is sent aperture command signal and control from the picking control method of the jet flow of aforementioned Weft insertion nozzle, it is characterized in that,
Be to comprise according to the due in that detects the parallel in the way of flying from the parallel detecting signal of parallel sensor and come the picking control method of the aforementioned aperture command signal of revisal according to the due in that detects with respect to benchmark deviation constantly.
2. picking control method as claimed in claim 1, it is characterized in that, the parallel sensor comprises detecting from surveying long storage and stays device to be separated the easypro sensor of separating of easypro parallel, perhaps, is disposed at the fly parallel sensor of path of parallel in the shedding that should detect the parallel in the picking way.
3. picking control method as claimed in claim 1 or 2, it is characterized in that, Weft insertion nozzle comprises the nozzle of swimming under the in-position of the parallel front end that is disposed at when detecting due in, and the control of aforementioned jet flow comprises the method for aperture that is communicated in the choke valve of aforementioned nozzle according to aforementioned aperture command signal adjustment through revisal.
4. picking control method as claimed in claim 1 or 2, it is characterized in that, aforementioned Weft insertion nozzle is included in a plurality of nozzles that leave arranged spaced on the direction that flies of parallel, and the control of aforementioned jet flow comprises the method for aperture that is communicated in the choke valve of the nozzle that sprays fluid and is communicated in the choke valve of the nozzle that will spray fluid according to aforementioned aperture command signal adjustment through revisal.
5. one kind comprises and has set the jet type output that sets from the setting apparatus of the jet type of the fluid of Weft insertion nozzle with according to this setting apparatus for the aperture command signal of the choke valve that is communicated in aforementioned Weft insertion nozzle and the control picking control apparatus from the control loop of the jet flow of aforementioned Weft insertion nozzle, it is characterized in that
Aforementioned control loop comprises according to the due in that detects the parallel in the way of flying from the parallel detecting signal of parallel sensor and calculates the due in that the detects deviation calculation portion with respect to benchmark deviation constantly; According to the deviation of calculating, send revisal signal generation for the revisal signal of the aperture of aforementioned choke valve; According to aforementioned aperture command signal of aforementioned revisal signal correction and the correcting section that will export for the new aperture command signal of aforementioned choke valve through the conduct of the signal of revisal.
6. picking control apparatus as claimed in claim 5 is characterized in that, the arrival angle detector that the angle of revolution of the main shaft when aforementioned deviation calculation portion comprises aforementioned parallel detecting signal input detects as aforementioned due in; Compare constantly with benchmark with the due in that will detect, calculate the calculation loop of aforementioned deviation,
Aforementioned revisal signal generation basis comes from the deviation in aforementioned calculation loop and aforementioned revisal signal takes place in the angle of revolution of aforementioned main shaft,
Aforementioned correcting section comprises that the jet type that sets according to aforementioned setting apparatus is exported and the controller of the corresponding aforementioned aperture command signal of aforementioned main shaft gyration angle; With to carrying out add operation and export the addometer of aforementioned new aperture command signal from the aperture command signal of this controller with from the aforementioned revisal signal of aforementioned revisal signal generation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001379738 | 2001-12-13 | ||
| JP2001379738A JP2003183950A (en) | 2001-12-13 | 2001-12-13 | Method of control for weft insertion and device for the same |
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| Publication Number | Publication Date |
|---|---|
| CN1425816A true CN1425816A (en) | 2003-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02154373 Pending CN1425816A (en) | 2001-12-13 | 2002-11-29 | Pick control method and device |
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| Country | Link |
|---|---|
| JP (1) | JP2003183950A (en) |
| CN (1) | CN1425816A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184877B (en) * | 2005-04-25 | 2011-01-26 | 必佳乐有限公司 | Method for introducing a weft thread in a weaving machine |
| CN104805572A (en) * | 2014-01-23 | 2015-07-29 | 津田驹工业株式会社 | Wefting insertion control method for water jet-type loom and wefting insertion control device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5592239B2 (en) * | 2010-11-29 | 2014-09-17 | 津田駒工業株式会社 | Sub nozzle injection period setting method for air jet loom |
-
2001
- 2001-12-13 JP JP2001379738A patent/JP2003183950A/en active Pending
-
2002
- 2002-11-29 CN CN 02154373 patent/CN1425816A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101184877B (en) * | 2005-04-25 | 2011-01-26 | 必佳乐有限公司 | Method for introducing a weft thread in a weaving machine |
| CN104805572A (en) * | 2014-01-23 | 2015-07-29 | 津田驹工业株式会社 | Wefting insertion control method for water jet-type loom and wefting insertion control device |
| CN104805572B (en) * | 2014-01-23 | 2017-12-12 | 津田驹工业株式会社 | The wefting insertion control method and Weft insertion controller of water jet loom |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003183950A (en) | 2003-07-03 |
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