CN1789518A - Yarning device in water loom - Google Patents

Abstract

To provide a weft insertion apparatus in a water jet loom, which controls degradation of the wave form of injection pressure. A branch pipe 35 is connected to a discharge pipe 19 between a weft insertion pump 11 and a weft-inserting nozzle 20 and a bypass nozzle 36 is connected to the end of the branch pipe 35. The passage cross-section area at the jet orifice of the weft-inserting nozzle 20 can be changed and the passage cross-section area at the jet orifice of the bypass nozzle 36 can be changed. The height position of the jet orifice of the weft-inserting nozzle 20 is made equal to that of the jet orifice of the bypass nozzle 36. A waterway length from a branch part 53 to the jet orifice of the weft-inserting nozzle 20 is made uniform to a waterway length from the branch part 53 to the jet orifice of the bypass nozzle 36.

Description

Weft inserting device in the water jet looms

Technical field

The present invention relates to a kind ofly spray by the weft inserting device of going into water that the latitude pump supplies with and the water jet looms of parallel being gone into latitude from going into weft inserting nozzle.

Background technology

In water jet looms, widely used weft inserting device comprises: the pump that is made of plunger, pressure cylinder, control lever system etc.; The cam mechanism, pressurization that drive this pump are with helical spring, pipe arrangement and go into weft inserting nozzle.The action of weft inserting device is following to be carried out: by have the ram type pump of check-valves before and after the pressure cylinder chamber, go into latitude at every turn and all a certain amount of water is attracted, pressurizes and ejects from going into weft inserting nozzle, parallel is by spraying latitude in shedding from the water of going into weft inserting nozzle.

In water jet looms, be necessary with the weaving condition (specifically, loom rotating speed, line kind, knit wide) accordingly, to the sectional area Aj of speed Vj, the water spray of water spray, and the length L of water spray adjust.In ram type pump, these 3 characteristic value Vj, Aj, L by plunger thrust F, plunger sectional area Ap, ram travel s and go into weft inserting nozzle the jet place pass through sectional area An decision.Regard water spray as water column, the loss of ignoring pipeline and going into the weft inserting nozzle place if plunger thrust F is set at certain value, then has following relation between characteristic value Vj, Aj, L.

[several 1]

Vj＝〔2×g×F/(Ap×γ)〕 ^1/2…(1)

Aj＝An …(2)

L＝s×Ap/An …(3)

In addition, g is an acceleration of gravity, and γ is the proportion of water.

Change in the weaving of the flimsy material such from taffeta under the situation of weaving of the such heavy weave of air bag, the rugosity of line becomes about 10 times.Owing under the situation of this thick line, be necessary with wrapping into around the line line to be flown away with powerful injection, thus select bore bigger go into weft inserting nozzle with the water spray that obtains thick brute force (selection by sectional area An bigger go into weft inserting nozzle).Be replaced with bore bigger go into weft inserting nozzle after, if plunger sectional area Ap remains unchanged, then according to formula (3) spray penetration L deficiency as can be known, so for this is compensated, being necessary increases ram travel s and the sectional area An that passes through that goes into the weft inserting nozzle place pro rata.For the increase of ram travel s, because there is the upper limit in mechanism, so under the required water yield is situation more than the boundary value, be altered to the bigger pump of plunger sectional area Ap.Again,, be necessary to increase plunger thrust F (being added to the expulsion pressure at weft inserting nozzle place), increase helical spring decrement, but under the situation of decrement deficiency, replace to the bigger helical spring of spring constant according to formula (1) in order to keep the speed Vj of water spray.

In the polychrome weft inserting device of real fair 1-24152 communique, following by-pass structure is disclosed, promptly, go into pipeline between weft inserting nozzle and the pump go into weft inserting nozzle near be provided with choke valve, be provided with the type variable choke valve at upstream bypass line along separate routes from this choke valve.The part of the water under high pressure of discharging from pump is got back to the tank via bypass line and type variable choke valve.In aforementioned documents, record is to be adjusted into the weft inserting device of purpose to the expulsion pressure of going into the weft inserting nozzle place by the aperture operation of type variable choke valve.

In aforementioned documents, bypass line directly is connected with tank.Such structure is brought the problem of the following stated.

In pump, the cam lever that constitutes cam mechanism is in the moment of the constraint that breaks away from cam, and helical spring thrust directly acts on the plunger, and rising with this rapid thrust makes the hydraulic pressure in the pressure cylinder sharply raise accordingly.At this moment, excessive pressure wave transmits in pipeline with velocity of sound.During disclosed bypass constitutes in aforementioned documents, pressure wave shunt portion punish towards the direction of going into weft inserting nozzle, with direction towards the type variable choke valve, towards the pressure of type variable choke valve by the type variable choke valve towards tank.When arriving the port of export, produce back wave towards the pressure wave of going into weft inserting nozzle, towards pressure wave generation back wave when arriving the port of export of type variable choke valve.These back waves adverse current in pipeline turns back in the pump, and then reflects repeatedly.The pressure wave of Chan Shenging is overlapping like this, causes the pulsation of expulsion pressure.

In the device of aforementioned documents, the export department of type variable choke valve is positioned at than tank by the top, from go into weft inserting nozzle not injection water during in, the pressure of the export department of type variable choke valve becomes less than atmospheric pressure (negative pressure).Thus, if loom stops for a long time, then the water in the pipeline falls, and is full of air in the pipeline.When loom turns round, be necessary to carry out following operation: pedal is operated, made the pump action, make to be full of water in the pipeline.In the pipeline of going into the weft inserting nozzle side, remove air simply by the water several times injection, but in the bypass line of variable throttle valve, because the influence of buoyancy, air is docked to the top in the bypass line, so the air of bypass pipe trackside can promptly not be discharged to the tank side.If the state that remains in the bypass line from air begins to make the loom running, then through after a while, residual air is forced out and flows away, change successively but the pulsating waveform of expulsion pressure is corresponding with residual bubbles volume, finally reach stable state, still, in this process, the injection instability of water spray is easy to generate into latitude not good.

Even to quiet rum, air bubble problem can not eliminated yet.Even a spot of air dissolves in the water, the export department of variable throttle valve also can bad student's locality negative pressure, the phenomenon of bubbleization or water evaporation so produce inevitably that air dissolves in the water.If variable throttle valve is in state less than atmospheric pressure (negative pressure) by the downstream, then the bubble of Chan Shenging can be directly not soluble in water, but disperse finely and sneak in the pipeline.Even the bubble mixed volume is (for example 1%) seldom,, pressure rolling land spread speed is reduced significantly because the compressibility of bubble can make the volume modulus as fluid reduce significantly.The generation of the reduction meeting echo,delayed of pressure-wave propagation speed makes the pulsation period elongated.The increase of pulsation period can make the rising response of pressure waveform reduce, and causes into latitude not good.

As described above, in aforementioned documents in the disclosed device, the phenomenon that can not avoid for weft inserting device, not wishing occurring, promptly, spray the increase of the disorder of the pressure waveform after just having begun or the water pulsation phenomenon between injection period.

Summary of the invention

The object of the present invention is to provide the weft inserting device in a kind of water jet looms of deterioration of the waveform that suppresses expulsion pressure.

In order to realize aforementioned purpose, the present invention will be spraying from going into weft inserting nozzle that to carry out the weft inserting device that parallel goes into the water jet looms of latitude be object by going into water that the latitude pump supplies with.The present invention has can be with water from going into the latitude pump to aforementioned diversion mechanism of going into the water supply path shunting of weft inserting nozzle from aforementioned.Aforementioned diversion mechanism is characterised in that, has the bypass nozzle, sprays towards atmospheric pressure region from the water of aforementioned bypass nozzle ejection.

Make water from the bypass nozzle ejection towards the formation that atmospheric pressure region is sprayed, because the export department of bypass nozzle can be less than atmospheric pressure (negative pressure), so avoid the deterioration of the pressure waveform that causes because of the bubble in the pipeline.

In preferred example, aforementioned diversion mechanism has from aforementioned water supply path shunt water route along separate routes, aforementioned bypass nozzle is connected on the end of aforementioned shunt water route, the length of the part from the shunt portion of aforementioned water supply path and aforementioned shunt water route to aforementioned water supply path of going into weft inserting nozzle, with identical to the length of the shunt water route of bypass nozzle from aforementioned shunt portion.

The length of part from shunt portion to the water supply path of going into weft inserting nozzle, and the length of shunt water route from shunt portion to the bypass nozzle difference more little, suppress the deterioration of the pressure waveform that water sprays more.The length of part from shunt portion to the water supply path of going into weft inserting nozzle, with the identical formation of length of shunt water route from shunt portion to the bypass nozzle, the inhibition of the deterioration of the pressure waveform that sprays for water is particularly preferred.The length of the part from shunt portion to the water supply path of going into weft inserting nozzle, the state identical with the length of shunt water route from shunt portion to the bypass nozzle also comprise following situation: the scope that the deterioration of the pressure waveform that water sprays is allowed, there is difference in the length of these water routes.

In a preferred embodiment, being provided with anti-sealing states the water that falls into weft inserting nozzle and aforementioned bypass nozzle in the past and falls anti-locking mechanism.

When loom stops, if water is from going into weft inserting nozzle or the bypass nozzle falls, entrained air in the pipeline then, the deterioration that brings the waveform of expulsion pressure.Utilize anti-sealing from going into the structure that weft inserting nozzle and bypass nozzle fall, prevent that air from sneaking in pipeline.

In a preferred embodiment, aforementioned water falls anti-locking mechanism and constitutes, dispose and aforementionedly go into the jet of weft inserting nozzle and the jet of aforementioned bypass nozzle, so that the height and position of the jet of the height and position of aforementioned jet of going into weft inserting nozzle and aforementioned bypass nozzle is in the relation that water falls that do not produce.

If it is bigger poor to exist on the height and position of the jet of going into weft inserting nozzle and the jet of bypass nozzle, then because both water-heads can make water fall, the interior entrained air of pipeline, the waveform deterioration of expulsion pressure.Height and position at the jet of jet of going into weft inserting nozzle and bypass nozzle does not exist under the situation of bigger difference, because the surface tension of water water can not take place falls phenomenon.

In a preferred embodiment, aforementioned water falls anti-locking mechanism and constitutes, and goes into the jet of weft inserting nozzle and the jet of aforementioned bypass nozzle is configured on the sustained height position with aforementioned.

It is effective especially for avoiding sucking air from the jet of the jet of going into weft inserting nozzle or bypass nozzle that the jet that will go into the jet of weft inserting nozzle and bypass nozzle is configured in the locational formation of sustained height.

In a preferred embodiment, the height and position of the jet of aforementioned bypass nozzle than the height and position of aforementioned jet of going into weft inserting nozzle more by the top, aforementioned water falls anti-locking mechanism and has: the water from aforementioned bypass nozzle ejection can be stored in than the height and position of aforementioned jet of going into weft inserting nozzle more by the discharge person in charge of below, be responsible for the discharge looped pipeline that is connected at the aforementioned height and position place of going into the jet of weft inserting nozzle with aforementioned discharge, water storage face during the exhaust of the injection oral-lateral of close aforementioned bypass nozzle is responsible for, and be to be responsible for the air section that coats between the jet of bypass nozzle by aforementioned discharge, water storage face in being responsible for away from the exhaust of the injection oral-lateral of aforementioned bypass nozzle opens at atmospheric pressure region, exceeds the water that aforementioned discharge is responsible in being responsible for the aforementioned discharge of the height and position of the connecting portion of discharging looped pipeline and flows to the aforementioned discharge looped pipeline from aforementioned connecting portion.

Water storage face in being responsible near the exhaust of the injection oral-lateral of bypass nozzle is an atmospheric pressure region with air section between the jet of bypass nozzle, and is identical with the height and position of the jet of going into weft inserting nozzle away from the height and position of the water storage face among the exhaust person in charge of the injection oral-lateral of bypass nozzle.Therefore, air can more not suck by the jet of last bypass nozzle from the height and position than the jet of going into weft inserting nozzle.

In a preferred embodiment, the height and position of the jet of aforementioned bypass nozzle than the height and position of aforementioned jet of going into weft inserting nozzle more by the top, aforementioned water falls anti-locking mechanism and has: accept from the discharge of the water of bypass nozzle ejection be responsible for, above more leaning on, be responsible for the discharge looped pipeline that is connected with aforementioned discharge than aforementioned height and position of going into the jet of weft inserting nozzle, be arranged on be responsible for than aforementioned discharge and aforementioned discharge looped pipeline between connecting portion more lean on the check-valves of upstream side, aforementioned connecting portion opens at atmospheric pressure region.The interior water of the aforementioned discharge person in charge that exceeds the height and position of aforementioned connecting portion flow into the aforementioned discharge looped pipeline from aforementioned connecting portion.

Check-valves prevents that air from sneaking into its upstream side.Therefore, air can more not suck by the jet of last bypass nozzle from the height and position than the jet of going into weft inserting nozzle.

In a preferred embodiment, the aforementioned sectional area that passes through of going into the jet place of weft inserting nozzle is modifiable, and the sectional area that passes through at the jet place of aforementioned bypass nozzle is modifiable.

In the variable formation of going into weft inserting nozzle and variable bypass nozzles combine by sectional area, easily to carrying out suitable adjustment with the corresponding injection water yield of going into the weft inserting nozzle place of the change of weaving condition by sectional area.For example, do not changing the loom rotating speed and knitting wide and make under the situation of parallel chap, for increasing the rugosity of water spray, can make the sectional area that passes through become big, and make the sectional area that passes through at the jet place of bypass nozzle correspondingly reduce amount into the increase of passing through sectional area at the jet place of weft inserting nozzle into the weft inserting nozzle place.That is, adjust, make that the sectional area sum of passing through into the jet place that passes through sectional area and bypass nozzle at the jet place of weft inserting nozzle is that certain value gets final product.Again, for example, at the rugosity that does not change parallel and loom rotating speed and increase and knit under the wide situation, go into weft inserting nozzle the jet place to pass through sectional area constant, the sectional area that passes through of adjusting the jet place that makes the bypass nozzle reduces to get final product.With to knit wide increase corresponding, increase the water yield that is transported to into weft inserting nozzle thus.

In a preferred embodiment, the aforementioned sectional area that passes through of going into the jet place of weft inserting nozzle changes by the 1st electric driver, and the jet place of aforementioned bypass nozzle passes through sectional area for to change by the 2nd electric driver.

Changing into the formation of passing through sectional area at the jet place that passes through sectional area and bypass nozzle at the jet place of weft inserting nozzle by electric driver is favourable to the automation of weft inserting device.

The aforementioned variable range of passing through sectional area of going into the jet place of weft inserting nozzle is preferably 1.2mm ²～5mm ²Scope.

The variable range of passing through sectional area at the jet place of aforementioned bypass nozzle is preferably 0mm ²～5mm ²Scope.

In a preferred embodiment, aforementioned water expulsion pressure of going in the latitude pump takes place to comprise the fluid spring mechanism that the pressure with compressible gasiform fluid uses as spring force with drive source.

The expulsion pressure of going into the weft inserting nozzle place is to deduct the value that pressure reduces gained from the pressure of being determined by the sectional area Ap of thrust F that acts on plunger and plunger (F/Ap), and it is owing to the frictional resistance of the channel wall in the way, and go into the flow losses at the choke valve place that weft inserting nozzle is connected in series and the inertia effect of water produces that described pressure reduces.The increase that produces flow velocity as the result who shunts increases pressure reduction amount, and its influence involves the water expulsion pressure.Adopt following structure in aforementioned documents in the disclosed device: by to adjusting with going into the weft inserting nozzle choke valve that is provided with of connect, be altered to the flow losses till the weft inserting nozzle, the water expulsion pressure at weft inserting nozzle place is gone in adjustment thus.But, can not avoid by throttle operation in theory, and aqueous jet amount and these two while of water expulsion pressure into the weft inserting nozzle place are changed linkedly variable throttle valve.That is, in aforementioned documents in the disclosed device, even thereby in variable throttle valve, have and make the current shunting reduce the function that is transported to the discharge in the weft inserting nozzle, can not play the function of on one's own initiative the water expulsion pressure being adjusted yet.

According to the water expulsion pressure of going in the latitude pump formation of fluid spring mechanism takes place to comprise with drive source, can adjust the pressure of compressible gasiform fluid, adjust the water expulsion pressure into the weft inserting nozzle place, this adjustment is easier to.

Description of drawings

Fig. 1 (a) is the overall diagram of the weft inserting device in the water jet looms of the 1st embodiment that the present invention is specialized.

Fig. 1 (b) is the partial top view of Fig. 1 (a).

Fig. 2 (a) and Fig. 2 (b) are the cutaway views of going into weft inserting nozzle 20 in the weft inserting device of presentation graphs 1 (a).

Fig. 3 (a) and Fig. 3 (b) are the cutaway views of the bypass nozzle 36 in the weft inserting device of presentation graphs 1 (a).

Fig. 4 (a) is the overall diagram of the weft inserting device of Fig. 1 (a).

Fig. 4 (b) is the cutaway view of going into latitude pump 11 in the weft inserting device of presentation graphs 4 (a).

Fig. 5 (a)～Fig. 5 (c) is the chart of the example of the pressure waveform in the weft inserting device of the 1st embodiment shown in the presentation graphs 1 (a).

The chart of the example of the pressure waveform of Fig. 5 (d)～Fig. 5 (f) situation that to be expression connect with steel tube bypass nozzle 36 and tank 18.

Fig. 6 is the chart that is illustrated in the example of the pressure waveform when sneaking into bubble under the situation that bypass nozzle 36 and tank 18 are connected with steel tube.

Fig. 7 is to output of going into weft inserting nozzle 20 and chart to the distribution ratio of the output of bypass nozzle 36 in the weft inserting device of presentation graphs 1.

Fig. 8 is other routine cutaway views of expression bypass nozzle.

Fig. 9 is the schematic diagram of the weft inserting device of expression the 2nd embodiment of the present invention.

Figure 10 is the schematic diagram of the weft inserting device of expression the 3rd embodiment of the present invention.

Figure 11 is the overall diagram of the weft inserting device of expression the 4th embodiment of the present invention.

Figure 12 is the partial top view of the weft inserting device of expression Figure 11.

Figure 13 is the schematic diagram of decompression gradient regulator 69 in the weft inserting device of expression Figure 11.

Figure 14 is the chart of the relation of the interior pressure in volume and the balancing gate pit 221 of the balancing gate pit 221 in the weft inserting device of expression Figure 11.

The specific embodiment

Below, based on Fig. 1 (a)～Fig. 7, the 1st embodiment that the present invention specialized is described.

Weft inserting device in Fig. 1 (a) and Fig. 4 (a) expression water jet looms, Fig. 4 (b) expression constitutes the internal structure of going into latitude pump 11 of weft inserting device.

Shown in Fig. 4 (b), water storage room forms pressure cylinder 13 and forms with constituting the pump case 12 of going into latitude pump 11, and plunger 14 is housed in water storage room slidably and forms in the pressure cylinder 13.

On pump case 12, be formed with suction inlet 121 and outlet 122, between suction inlet 121 and outlet 122, form water storage room 123.Between water storage room 123 and the suction inlet 121, and between water storage room 123 and outlet 122, be folded with check-valves 15,16.Shown in Fig. 1 (a), the suction line 17 that is connected on the suction inlet 121 is communicated with tank 18, be connected on the outlet 122 discharge pipe 19 with go into weft inserting nozzle 20 and be connected.Discharge pipe 19 is the water supply paths that are used for supplying to from the water of going into latitude pump 11 force feeds into weft inserting nozzle 20.

On pipe base 21, bellows (bellows) 22 is installed.On bellows 22, be installed with displacement carrier 23.On the joint 24 that links with plunger 14, be rotatably mounted with rotor 25.Displacement carrier 23 and rotor 25 butts, the pressure of the balancing gate pit 221 in the bellows 22 (diagram among Fig. 4 (a)) passes to plunger 14 via displacement carrier 23, rotor 25 and joint 24.Bellows 22 and balancing gate pit 221 constitute will compressible gasiform fluid (air) pressure as the fluid spring mechanism (going into the water expulsion pressure generation drive source in the latitude pump 11) of spring force.

Plunger 14 is connected with cam lever 26 via joint 24.Cam lever 26 can contact or leave via cam-follower 261 with cam 27.Cam lever 26 with the rotation of loom synchronously with certain angular speed along under the acting in conjunction of the cam 27 of the direction rotation of the arrow Z of Fig. 1 (a) and Fig. 4 (a) and the pressure in the bellows 22, carry out reciprocally swinging.Plunger 14 moves back and forth integratedly by the reciprocally swinging of cam lever 26.

If cam lever 26 is that the center turns left with fulcrum 262, then plunger 14 is to moving toward moving direction shown in the arrow Q of Fig. 4 (b).Plunger 14 is to carrying out when mobile toward moving direction shown in the arrow Q, and the volume of water storage room 123 increases, and the water in the tank 18 are inhaled in the water storage room 123.Plunger 14 is to carrying out when mobile toward moving (toward Move) direction shown in the arrow Q, the volume reducing of balancing gate pit 221, and the pressure in the balancing gate pit 221 begin to rise.After this, the pressure in the balancing gate pit 221 rises toward moving with plunger 14, and in the past moving finish time of plunger 14, it is maximum that the pressure in the balancing gate pit 221 reaches.Check-valves 15 is opened in water storage room 123 suction, and check-valves 16 cuts out during this period, the water in the discharge pipe 119 can adverse current in water storage room 123.

Behind the maximum gauge position Ma of cam-follower 261 by the cam surface 271 of cam 27, cam lever 26 is that the center turns right with fulcrum 262, and plunger 14 moves to the double action direction shown in the arrow R of Fig. 4 (a) by the pressure of the air in the balancing gate pit 221.Plunger 14 is after the double action shown in the arrow R (Complex Move) direction moves, and the water in the water storage room 123 is pressurized.Pressurized water in the water storage room 123 is pressed in the weft inserting nozzle 20.The water that is sent in the weft inserting nozzle 20 sprays from going into weft inserting nozzle 20, and parallel Y (shown in Fig. 1 (b)) is gone into latitude.The cam-follower 261 that leaves from the cam surface 271 of cam 27 abut to cam surface 271 or the retainer 28 of the injection water yield restriction usefulness that is provided with in addition on, finish thereby the water of 1 circulation is sprayed.

Retainer 28 comprises: be configured to motionless internal thread body 281; The external screw thread body 282 that combines with internal thread body 281 screw threads; The locking nut 283 that combines with external screw thread body 282 screw threads.External screw thread body 282 is fixed on the internal thread body 281 by the fastening of locking nut 283.Be screwed into the position if change the screw thread with respect to internal thread body 281 of external screw thread body 282, then can change the final end position of the vibration-direction of cam lever 26.If change this final end position, then can change water and spray the finish time.Be screwed into the position as if the screw thread that makes external screw thread body 282 with respect to internal thread body 281 and deepen, then the water injection concluding time can postpone, and is screwed into the position as if the screw thread that makes external screw thread body 282 with respect to internal thread body 281 and shoals, and then the water injection concluding time can shift to an earlier date.

The bellows 22 interior balancing gate pits 221 that constitute fluid spring mechanism are connected on the air pressure source 30 via air pipe line 29.On air pipe line 29, be folded with the pressure-regulating valve 31 and the check-valves 32 of (relief) function that has overflow.Between pressure-regulating valve 31 and balancing gate pit 221, be provided with throttling path 34 in the mode in parallel with check-valves 32.Between pressure-regulating valve 31 and check-valves 32, on air pipe line 29, be connected with pressure gauge 33.Pressure gauge 33 is used for the air pressure between gaging pressure adjustment valve 31 and the check-valves 32.By pressure-regulating valve 31 being adjusted operation, the air pressure between pressure-regulating valve 31 and the check-valves 32 is set while observing pressure gauge 33.Pressure-regulating valve 31 with relief function remains at the air pressure between pressure-regulating valve 31 and the check-valves 32 pressure of setting by pressure-regulating valve 31.That is, the pressure of setting by pressure-regulating valve 31 feeds through to the balancing gate pit 221 of bellows 22.

Shown in Fig. 1 (b), going into latitude pump 11 and going between the weft inserting nozzle 20, on discharge pipe 19, be connected with by-pass tube 35, be connected with bypass nozzle 36 at the end of by-pass tube 35.By-pass tube 35 is from the discharge pipe 19 shunt water route along separate routes as water supply path.By-pass tube 35 and bypass pipe 36 constitute can be in the future since going into the diversion mechanism that latitude pump 11 is shunted to the water of going into the discharge pipe 19 between the weft inserting nozzle.

Fig. 2 (a) and (b) are represented the internal structure into weft inserting nozzle 20.On the support holes 381 of base 38, embed the nozzle body 39 that tubular is arranged.Screw thread is screwed with cap 40 on the outer peripheral face of the front of nozzle body 39.Nozzle body 39 is sandwiched between the flange part 391 and cap 40 of the rear end side that is formed at nozzle body 39 by the fastening of cap 40, thereby is fixedly installed on the base 38.Support holes 381 around the nozzle body 39 is connected with water supply path 382 in the base 38, and the outer peripheral face of nozzle body 39 is communicated with water supply path 382 with annular chamber 41 between the support holes 381.

In the tube of nozzle body 39, embedding has parallel guiding pin 42.Adjust screw element 43 and be pressed into and be fixed to the parallel guiding with on the rearward end of pin.Become parallel guiding and be combined on the interior week of flange part 391 with adjustment screw element 43 screw threads of the part of pin 42, the large-diameter portion 421 that parallel leads with pin 42 is fitted on the endoporus 392 of nozzle body 39.Parallel leads with the water route 44 of the ring-type between the inner peripheral surface of the endoporus 392 of the minor diameter part 422 of pin 42 and nozzle body 39, is communicated with annular chamber 41 via a plurality of inflow entrances 393.Parallel guiding with the minor diameter part 422 of pin 42 around, on nozzle body 39, be formed with inflow entrance 393 in the mode of uniformly-spaced arranging.The outer peripheral face of minor diameter part 422 is tapered a little.

The jet organizator 45 of tubular be pressed into and be fixed on nozzle body 39 leading section the tube in.On the inner peripheral surface of the jet organizator 45 of a part that becomes nozzle body 39, be formed with bellmouth 451.Bellmouth 451 for along with from the rear end of jet organizator 45 towards the shape of front end undergauge, bellmouth 451 refer on every side from jet organizator 45 the rear end, to the step 452 of the centre of the rear end of jet organizator 45 and front end.The parallel guiding runs through jet organizator 45 with the minor diameter part 422 of the front of pin 42 with the inboard of passing bellmouth 451, the mode that surpasses step 452.Become throttling path 453 between the outer peripheral face of the inner peripheral surface of bellmouth 451 and minor diameter part 422.The front end of throttling path 453 becomes the jet 201 into weft inserting nozzle 20.

In the water route 44 of ring-type, dispose a plurality of commutators 46.

If change the screw thread binding site of adjusting screw element 43 with respect to nozzle body 39, then make the parallel guiding axially produce displacement along it with pin 42, change the sectional area that passes through that sprays 201 places.Fig. 2 (a) expression is adjusted screw element 43 and is entered the darkest state with respect to nozzle body 39.In this state, adjust screw element 43 and parallel guiding and be fixed with respect to nozzle body 39 with pin 42, jet 201 places pass through sectional area minimum (＞0).The state that passes through the sectional area maximum at Fig. 2 (b) expression jet 201 places.At the distance piece 37 of adjusting the ring-type that folder is established between screw element 43 and the nozzle body 39, be fixed on the nozzle body 39 by adjusting the fastening of screw element 43, adjust screw element 43 and pin 42 and also be fixed on the nozzle body 39.

The sectional area that passes through at jet 201 places can be at 1.2mm ²To 5mm ²Scope in the change.Again, the parallel guiding uses the inside diameter D of pin 42 more than 1.3mm.The value of inside diameter D is 1.3mm, in general be can with the corresponding value of rugosity of the maximum of the parallel that uses.

Flow into the water route 44 via water supply path 382, annular chamber 41 and inflow entrance 393 from the water of going into latitude pump 11 force feeds.Flow into water in the water route 44 by between the adjacent commutator 46 and throttling path 453, spray from jet 201.Pass the parallel guiding and spray latitude in shedding by the water that comes self-injection 201 with the parallel Y in the pin 42.

Fig. 3 (a) and (b) are represented the internal structure of bypass nozzle 36.In nozzle body 47, form have family 471, discharge channel 472, and jet 473, chamber 471 is connected by jet 473 with discharge channel 472.Chamber 471 is communicated with by-pass tube 35.On nozzle body 47, embed pin 48 is arranged.The outer peripheral face of the leading section 481 of pin 48 is tapered, and leading section 481 enters into jet 473 by chamber 471.

Adjusting screw element 49 is pressed into and is fixed on the rearward end of pin 48.The adjustment screw element 49 that becomes the part of pin 48 combines with nozzle body 49 screw threads.Locking nut 52 screw threads are combined in to be adjusted on the screw element 49.Adjusting screw element 49 is fixed on the nozzle body 47 by the fastening of locking nut 52.Adjust the screw thread binding site of screw element 49 with respect to nozzle body 47 if change, then pin 48 axially produces displacement along it, thereby changes the sectional area that passes through at jet 473 places.

Pointer 54 is installed on nozzle body 47, and the operation plectane 491 of adjusting screw element 49 is marked with scale (diagram slightly).Utilize pointer 54 and scale to understand the sectional area that passes through at jet 473 places, the scale consistent with pointer 54 represent jet 473 places reality pass through sectional area.

Fig. 3 (a) expression is adjusted screw element 49 and is entered the darkest state with respect to nozzle body 47.Under this state, the sectional area that passes through at jet 473 places is zero.The state that passes through the sectional area maximum at Fig. 3 (b) expression jet 473 places.Jet 473 places pass through sectional area can from zero to 5mm ²Between the change.

In discharge channel 472, embed the joint 50 that tubular is arranged, on joint 50, be connected with flexible flexible pipe 51.The end of flexible pipe 51 is directed in the tank 18.Top in the side of nozzle body 47 is formed with passage 474 in the mode that is communicated with discharge channel 472.In the discharge channel 472 is atmospheric pressure region.

Passing through under the non-vanishing situation of sectional area of jet 473 places of bypass (by pass) nozzle 36, flow in the chamber 471 from going into the water that latitude pump 11 is sent to the by-pass tube 35.The water that flow in the chamber 471 sprays towards discharge channel 472 from jet 473.The water that sprays to discharge channel 472 flows into tank 18 via flexible pipe 51.

Shown in Fig. 1 (b), the water route length from discharge pipe 19 and by-pass tube 35 shunt portion 53 along separate routes to the jet 201 of going into weft inserting nozzle 20, with the water route same length (identical) of jet 473 from shunt portion 53 to bypass nozzle 36.The jet 473 of bypass nozzle 36 is configured on the position of equal height with the injection 201 of going into weft inserting nozzle 20.

In the 1st embodiment, can obtain following effect.

(1-1) water that sprays from bypass nozzle 36 sprays towards discharge channel 472.Discharge channel 472 is communicated with atmosphere zone via passage 474, and discharge channel 472 is an atmospheric pressure region.Make the water that sprays from bypass nozzle 36 to the structure that atmospheric pressure region is sprayed, the jet 473 of bypass nozzle 36 can be less than atmospheric pressure (negative pressure).Therefore, avoid since the jet 473 of bypass nozzle 36 less than atmospheric pressure (negative pressure), and discharge pipe 19 in, in the by-pass tube 35, go in the water route of weft inserting nozzle 20 inside, reach the problem of generation bubble in the water route of inside of bypass nozzle 36.That is, avoid the deterioration of the pressure waveform that causes with the bubble that the jet 473 (export department) by bypass nozzle 36 produces less than atmospheric pressure.

Fig. 5 (a) and (b), (c) are illustrated under the situation of passing through sectional area at jet 473 places of bypass nozzle 36 of the weft inserting device that changes present embodiment, the test example that the pressure waveform at jet 201 places of going into weft inserting nozzle 20 is measured.Curve G1 among Fig. 5 (a) represents that the sectional area that passes through at jet 473 places of bypass nozzle 36 is a pressure waveform under zero the situation.Curve G2 among Fig. 5 (b) represents that the sectional area that passes through at jet 473 places of bypass nozzle 36 is the maximum pressure waveform that passes through 20% situation of sectional area.Curve G3 among Fig. 5 (c) represents that the sectional area that passes through at jet 473 places of bypass nozzle 36 is the maximum pressure waveform that passes through 50% situation of sectional area.

Fig. 5 (d), (e), (f) be illustrated in and connect with steel tube bypass nozzle 36 and tank 18, change under the situation of passing through sectional area at injection 473 places of bypass nozzle 36 of the weft inserting device that the discharge channel 472 that makes bypass nozzle 36 is not communicated with atmospheric pressure region, the test example that the pressure waveform at jet 201 places of going into weft inserting nozzle 20 is measured.Curve K1 among Fig. 5 (d) represent bypass nozzle 36 jet 473 places pass through the pressure waveform that sectional area is zero situation.Curve K2 among Fig. 5 (e) represents that the sectional area that passes through at jet 473 places of bypass nozzle 36 is the maximum pressure waveform that passes through 20% situation of sectional area.Curve K3 among Fig. 5 (f) represents that the sectional area that passes through at jet 473 places of bypass nozzle 36 is the maximum pressure waveform that passes through 50% situation of sectional area.The test of Fig. 5 (d), (e), (f) is not sneaked in guaranteeing pipeline under the situation of bubble and is carried out.

If observe comparative pressure waveform G1, G2, G 3 and pressure waveform K1, K2, K3, then the sectional area that passes through at jet 473 places of bypass nozzle 36 is under zero the situation, does not have difference between apparent pressure waveform G1 and the pressure waveform K1.But in connecting with steel tube the weft inserting device of bypass nozzle 36 and tank 18, along with the increase of passing through sectional area at jet 473 places of bypass nozzle 36, the disorder of pressure waveform increases.Relative therewith, in the weft inserting device (bypass nozzle 36 is to the structure of atmospheric pressure region water spray) of present embodiment, along with the sectional area that passes through at injection 473 places of bypass nozzle 36 increases, pressure waveform maintains the water injection and has just begun rising waveform afterwards, injecting time shortens, pressure waveform disorderly less.

Fig. 6 be illustrated in connect with steel tube bypass nozzle 36 and tank 18, bypass nozzle 36 discharge channel 472 not with weft inserting device that atmospheric pressure region is communicated with in, in pipeline, sneak under the situation of bubble the test example that the pressure waveform at jet 201 places of going into weft inserting nozzle 20 is measured.Pressure waveform Ko represents the generation of rapid pulsation, under the situation that produces such pressure waveform Ko, is ball shape from the water spray of going into weft inserting nozzle 20 injections, and diffusion also becomes sharply, can not carry out the stable latitude of going into.

But,,, can carry out the stable latitude of going into because the pressure of discharge channel 472 that prevents bypass nozzle 36 makes and do not produce bubble in the pipeline less than atmospheric pressure according to present embodiment.

(1-2) as described above in the accompanying drawing of document disclosed like that, compare in the structure of long a lot (about two double-lengths) the pressure fluctuation composition that the increase cycle is long in the pipeline length of the length and the pump of bypass line-go between the weft inserting nozzle.In this case, produce the problem of the rising response reduction of expulsion pressure waveform.Again, the shape of pressure waveform self also becomes complicated.

In the present embodiment, from discharge pipe 19 and by-pass tube 35 shunt portion 53 along separate routes to the water route length of going into weft inserting nozzle 20, with water route same length (identical) from shunt portion 53 to bypass nozzle 36.The equalization of such water route length has suppressed complicated (deterioration of pressure waveform) of the shape of pressure waveform effectively.

(1-3) the height and position of the jet 201 of going into weft inserting nozzle 20 than the higher situation of the height and position of the jet 473 of bypass nozzle 36 under, because both water-heads, air is sucked from the jet 201 of going into weft inserting nozzle 20, and the water that makes same volume drip from the jet 473 of bypass nozzle 36.The height and position of the jet 201 of going into weft inserting nozzle 20 than the lower situation of the height and position of the jet 473 of bypass nozzle 36 under, because both water-heads, air is sucked from the jet 473 of going into bypass nozzle 36, and the water of same volume is dripped from the jet 201 of going into weft inserting nozzle 20.Like this, make bubble be blended in the pipeline of water (in the discharge pipe 19, in the by-pass tube 35, water route, the water routes in the bypass nozzle 36 gone in the weft inserting nozzle 20 medium), thereby make expulsion pressure waveform variation.Be configured in the locational structure of sustained height at the jet 473 of the jet 201 that will go into weft inserting nozzle 20, can effectively avoid because water-head and suck air from the jet 201 of going into weft inserting nozzle 20 or the jet 473 of bypass nozzle 36 with bypass nozzle 36.

(1-4) Fig. 7 be expression parallel Y rugosity d, knit wide, whenever go into latitude 1 time from the water yield Wy that goes into weft inserting nozzle 20 and spray, whenever go into 1 chart of latitude from the relation between the water yield Wb of bypass nozzle ejection.Transverse axis is represented the rugosity d of parallel Y, and the longitudinal axis is represented water yield Wy.D1 represents the minimum rugosity of the parallel Y that uses in the loom, and d2 represents the rugosity of the maximum of the parallel Y that uses in the loom.Water yield Wy and water yield Wb sum (Wb+Wy) with whenever go into latitude 1 time and equate from the supply water yield Wo that goes into latitude pump 11 force feeds.Supply with water yield Wo and the double action by plunger 14 water storage room 123 in [among Fig. 4 (a) ,] and the volume of discharging is equal to moving of the direction of arrow R.Supply with the rugosity d2 that water yield Wo depends on the maximum of knitting line Y of knitting wide H2 and use of the maximum of being supposed.

Line E1 is illustrated in the wide H1 of knitting of the minimum of allowing in the loom and carries out under the situation of weaving, with the rugosity d of parallel Y in water yield Wy during change and the allocation proportion between the water yield Wb in [d1, d2] scope.Line E2 is illustrated in the wide H2 of knitting of the maximum of allowing in the loom and carries out under the situation of weaving, with the rugosity d of parallel Y in water yield Wy during change and the allocation proportion between the water yield Wb in [d1, d2] scope.Line E3 be illustrated in than knitting of maximum wide little, carry out under the situation of weaving than the minimum roomy wide H 3 that knits that knits, with the rugosity d of parallel Y in a water yield Wy during change and an example of the allocation proportion between the water yield Wb in [d1, d2] scope.

Do not change the loom rotating speed and knit wide (for example H3), and parallel Y (parallel of for example thick than d1, thinner than d2 rugosity d3) is become thicker parallel (parallel of for example thin than d2 rugosity d4).In this case, as shown in Figure 7, the allocation proportion of water yield Wy and water yield Wb is from an X1 (allocation proportion Wy1: Wb1) become X2 (allocation proportion Wy2: Wb2).In order to carry out this change, adjust operation, the sectional area that passes through into jet hole 201 places of weft inserting nozzle 20 is increased, and correspondingly make the sectional area that passes through at jet 473 places of bypass nozzle 36 reduce (jet 201 places pass through the amounts that sectional area increases).Before and after this adjustment operation, the sectional area sum of passing through of passing through sectional area and jet 473 places at jet 201 places does not change, but increases from the rugosity of the water spray of going into weft inserting nozzle 20 injections.

Do not change the rugosity (for example d4) of loom rotating speed and parallel Y, change to the maximum wide H2 that knits and for example will knit wide H 3.In this case, as shown in Figure 7, the allocation proportion of water yield Wy and water yield Wb is from an X2 (allocation proportion Wy2: Wb2) become an X3 (allocation proportion Wy3: Wb3).In order to carry out this change, adjust operation, the sectional area that passes through into jet 201 places of weft inserting nozzle 20 is remained unchanged, the sectional area that passes through at jet 473 places of bypass nozzle 36 is reduced.Thus, increase to the water quantity delivered of going into weft inserting nozzle 20.

Like this, made up the structure of the bypass nozzle 36 of going into the weft inserting nozzle 20 and the variable injection water yield of the variable injection water yield, carry out easily and the corresponding adjustment of going into the injection water yield at weft inserting nozzle 20 places of the change of weaving condition (specifically, loom rotating speed, line kind, knit wide).

(1-5) variable range of passing through sectional area of going into jet 201 places of weft inserting nozzle 20 is preferably 1.2mm ²～5mm ²Scope.Again, the variable range of passing through sectional area at jet 473 places of bypass nozzle 36 is preferably 0mm ²～5mm ²Scope.

(1-6) increase not changing the loom rotating speed and knit under the wide situation, be necessary to increase from going into the jet velocity of the water that weft inserting nozzle 20 sprays.For this reason, can adjust operation, make that the pressure in the balancing gate pit 221 of bellows 22 improves, thereby improve the expulsion pressure of going in the weft inserting nozzle 20.

According to aforementioned formula (1), for example the loom rotating speed is risen under 1.2 times the situation, the pressure in the balancing gate pit 221 of bellows 22 can be become 1.44 times (1.2 square).Can carry out this pressure adjustment simply by pressure-regulating valve 31 is adjusted operation.

(1-7) in water jet looms in the past, under the situation that the rugosity of parallel changes in the scope of 50 DENIER (denier)～900 DENIER significantly, unavoidably can constitute helical spring replacing into the latitude pump, go into latitude pump integral body replacing, go into the replacing of weft inserting nozzle etc.In present production plant, under the situation of the change that is contemplated to big weaving condition, taked the following measure of Denging: in order to change, in the storehouse, prepared in advance diameter of plunger different go into the different helical spring of latitude pump, spring constant and drift, the different weft inserting nozzle etc. of going into of bore goes into the latitude parts.But, according to circumstances when being not used in the parts of replacing, have to take the following measure of Denging: know obviously uneconomically, also use the necessary above water yield to go into the thinner parallel of latitude; Or know obviously the reduction that can cause fabric quality and running rate, also go into the thicker parallel of latitude with the less water yield; Or have to reduce the loom rotating speed and turn round.

In the present embodiment, drive source takes place to use as the water expulsion pressure of going in the latitude pump 11, use fluid spring mechanism, can to the jet 473 of the bypass nozzle 36 that will spray to atmospheric pressure region from the water of discharge pipe 19 shuntings pass through sectional area, with jet hole 201 places of going into weft inserting nozzle 20 pass through sectional area adjustment.Its result has removed when the change of weaving condition is big, has to carry out the problem of part replacement in order to adjust the water expulsion pressure.

In the present embodiment, newly appended new parts, but if consider the required component count of weaving in all scopes of weaving condition in the prior art, then the component count in the present embodiment is than reduced significantly in the past.Loom in the less volume and more variety production that is used for the multiple weaving condition of processing rapidly, if utilize the present invention, then can expect has following multiple effect: function increases, the adjustment time shortens, stock's parts reduce, and its cost performance is compared very high with conventional art.

Then, the bypass nozzle 36A for Fig. 8 different with bypass nozzle 36 some structure in the 1st embodiment describes.The formation portion identical with the 1st embodiment uses identical Reference numeral.

Pin 48A can move with respect to nozzle body 47A along the vertical direction by the rotating operation of the operation plectane 491 of adjustment screw element 49.Water by jet 473A sprays towards the discharge channel 472A that connects along the vertical direction with respect to nozzle body 47A.Discharge channel 472A is communicated with atmospheric pressure region by passage 474.Bypass nozzle 36A plays and the identical effect of bypass nozzle 36 in the 1st embodiment.

Then, the 2nd embodiment that is schematically shown among Fig. 9 is described.The formation portion identical with the 1st embodiment uses identical Reference numeral.

The height and position of the jet 361 of bypass nozzle 36B than the height and position of the jet 201 of going into weft inserting nozzle 20 by last, jet 361 directed downwards.The discharge that is connected with U word shape on bypass nozzle 36B is responsible for 55, is connected with in the side of discharging the person in charge 55 and discharges looped pipeline 56.Discharge looped pipeline 56 and be responsible for 55 both connecting portions on the height and position of the jet 201 of going into weft inserting nozzle 20 with discharging, discharge and be responsible in 55, can water storage till discharging looped pipeline 56 and the connecting portion of discharging between the person in charge 55.Water storage face h1 in being responsible near the exhaust of jet 361 sides of bypass nozzle 36B, with the jet 361 of bypass nozzle 36B between serve as reasons and discharge the air sections of being responsible for 55 coatings.Water storage face h2 in being responsible for than the exhaust of distally (away from jet 361 sides of bypass nozzle 36B) apart from the jet 361 of bypass nozzle 36B utilizes passage 474 and opens at atmospheric pressure region, exceeds to discharge looped pipeline 56 and the discharge of discharging the height and position of being responsible for 55 connecting portion and be responsible for water in 55 and flow to from aforementioned connecting portion and discharge the looped pipeline 56.Flow out to the water of discharging in the looped pipeline 56 and flow back into tank 18[with reference to Fig. 1 (a)] via pipe 51.

To be responsible for 55 length from bypass nozzle 36B to the discharge of aforementioned connecting portion and be made as the length that pressure fluctuation is not exerted one's influence.Under discharge being responsible for the minimum situation of flow resistance in 55, can regard the air section between the jet 361 of water storage face h1 and bypass nozzle 36B as atmospheric pressure region, be ejected into atmospheric pressure region from the water of jet 361 injections of bypass nozzle 36B.That is, when loom running stopped, water can not fall from the jet 201 of going into weft inserting nozzle 20 or the jet 361 of bypass nozzle 36B, can air be sneaked in the pipeline owing to water falls.Discharge looped pipeline 56 and fall anti-locking mechanism with the discharge person in charge 55 formation water.

In the polychrome weft inserting device, use under the situation of the present invention, be subjected to being provided with the restriction in space, have the situation that can not obtain desirable configuration (will go into the jet 201 of weft inserting nozzle 20 and the jet of bypass nozzle is configured on the sustained height) about the height and position of going into weft inserting nozzle 20 and bypass nozzle.It is effective in this case that the water of the 2nd embodiment falls anti-locking mechanism.

Then, the 3rd embodiment that is schematically shown among Figure 10 is described.The formation portion identical with the 1st embodiment uses identical Reference numeral.

By last, jet 362 points to horizontal directions than the height and position of the jet 201 of going into weft inserting nozzle 20 for the height and position of the jet 362 of bypass nozzle 36C.Be connected with to discharge on bypass nozzle 36C and be responsible for 57, acceptance is responsible for 57 from the discharge of the injection water of bypass nozzle 36C and is comprised horizontal component and vertical component, and vertical component extends upward.Be connected with discharge looped pipeline 58 in the side of the vertical component of discharging the person in charge 57.More be provided with check-valves 59 than discharging the person in charge 57 with the connecting portion of discharging looped pipeline 58 by upstream side.Check-valves 59 utilizes the deadweight of valve body 591 that valve opening 592 is closed.Discharge looped pipeline 58 and open at atmospheric pressure region by passage 474 with the connecting portion of discharging the person in charge 57.Exceed discharge looped pipeline 58 with discharge the height and position of being responsible for 57 connecting portion, discharge the water of being responsible in 57 and flow to from aforementioned connecting portion and discharge the looped pipeline 58.Flow out to the water of discharging in the looped pipeline 58 and flow back into tank 18[with reference to Fig. 1 (a)] via pipe 51.

Check-valves 59 prevents the water adverse current in the drain header 57.Therefore, when loom running stopped, water can not fall from the jet 201 of going into weft inserting nozzle 20 or the jet 362 of bypass nozzle 36C, can air be sneaked in the pipeline owing to water falls.Discharge to be responsible for 57, to discharge looped pipeline 58, and check-valves 59 constitute water and fall anti-locking mechanism.The water of the 3rd embodiment falls anti-locking mechanism and can not obtain under the situation of desired configuration about the height and position of going into weft inserting nozzle 20 and bypass nozzle, with the 2nd embodiment similarly be effective.

In addition, can be by spring force with the valve body 591 of check-valves 59 the direction application of force to close valve orifice 592.In this case, wish that spring force is minimum.

Then, Figure 11～the 4th embodiment shown in Figure 14 is described.The formation portion identical with the 1st embodiment uses identical Reference numeral.

The 1st electric driver 66 of servo motor type as shown in figure 11 is driven into the parallel guiding of weft inserting nozzle 20 and uses pin 42[with reference to Fig. 2 (a) and (b)], the pin 48[that the 2nd electric driver 67 of servo motor type drives bypass nozzles 36 makes with reference to Fig. 3 (a) and (b) l. the 1st electric driver 66 and adjusts screw element 43[with reference to Fig. 2 (a) and (b)] rotate, change the sectional area that passes through into jet 201 places of weft inserting nozzle 20.The 2nd electric driver 67 makes adjusts screw element 43[with reference to Fig. 3 (a) and (b)] rotate, become bypass nozzle 36 jet 473 places pass through sectional area.

Going into to be assembled with potentiometer 77 on the weft inserting nozzle 20, on bypass nozzle 36, be assembled with potentiometer 78.Potentiometer 77 output and parallel guiding with pin 42[with reference to Fig. 2 (a) and (b)] the corresponding signal of telecommunication in position, potentiometer 78 is exported pin 48[with bypass nozzle 36 with reference to Fig. 3 (a) and (b)] the corresponding signal of telecommunication in position.

As shown in figure 12, going on the parallel path nearby of weft inserting nozzle 20, be provided with the line tension meter 60 and the anchor clamps 61 of strain detecting type.Behind the line pilot hole (diagram is slightly) of parallel Y by line tension meter 60, fixedly controlling sheet (diagram is slightly) and movably controlling between the sheet (diagram is omited) by anchor clamps 61.In that parallel Y is non-when going into latitude, movably control chip bonding and fixedly controlling on the sheet, parallel Y is movably controlled sheet being held in and is fixedly controlled between the sheet.When parallel Y is gone into latitude, movably control sheet and leave from fixedly controlling sheet, parallel Y breaks away from the effect of controlling of anchor clamps 61.The parallel Y that has broken away from the effect of controlling of anchor clamps 61 sprays latitude by the water of going into weft inserting nozzle 20.Because the load that the tension force of parallel Y produces acts on the line tension meter 60, the corresponding signal of telecommunication of load that 60 outputs of line tension meter and tension force by parallel Y produce.

Going into the latitude end side, disposing the injection top (Xian Head of strain detecting type) arrival detector 62.Arrival detector 62 in injection top is in from the jet path of the water of going into weft inserting nozzle 20 injections.From going into the water spray and 62 collisions of injection top arrival detector that weft inserting nozzle 20 sprays.Spray top and arrive detector 62 outputs and the corresponding signal of telecommunication of load that produces by the impact of spraying water.

On the retainer 28 of the final end position of the double action direction that limits cam lever 26, detectors of load 63 is installed.The corresponding signal of telecommunication of impact shock acceleration when detectors of load 63 output and cam lever 26 strike on the external screw thread body 282 of retainer 28.Detectors of load 63 detects from going into this situation of end of weft inserting nozzle 20 injection waters.

The signal of telecommunication that arrives detector 62, detectors of load 63 outputs from potentiometer 77,78, line tension meter 60, injection top is transported to the monitor-control apparatus 64.Monitor-control apparatus 64 has signal processing part 641 and operational part 642. Potentiometer 77,78, line tension meter 60, injection top arrive detector 62, detectors of load 63 signals are connected on the signal processing part 641, and signal is connected with the rotary encoder 65 that the loom anglec of rotation detects usefulness on signal processing part 641.

Signal processing part 641 is based on the signal of telecommunication that transports from potentiometer 77, detects to pass through sectional area N1 into injection 201 places of weft inserting nozzle 20.Signal processing part 641 is based on the signal of telecommunication that transports from potentiometer 78, detect bypass nozzle 36 jet 473 places pass through sectional area N2.The loom anglec of rotation that signal processing part 641 transports based on the signal of telecommunication that transports from line tension meter 60 and from rotary encoder 65 detects information, detects the θ p finish time that freely flies away that freely flying away of parallel Y finish (the parallel Y that flies away from the state that freely flies away to becoming the loom anglec of rotation of restraining when flying away state).Signal processing part 641 detects from the water spray top arrival of going into weft inserting nozzle 20 injections and sprays the moment θ j that top arrives the position of detector 62 based on arriving the signal of telecommunication and the aforementioned loom anglec of rotation detection information that detector 62 transports from spraying top.Again, signal processing part 641 detects information based on the signal of telecommunication that transports from detectors of load 63 and the aforementioned loom anglec of rotation, detects from the injection θ finish time e of the water of going into weft inserting nozzle 20 injections.

Signal processing part 641 with the detected θ p finish time that freely flies away, and detected injection top due in θ j output to operational part 642.Again, signal processing part 641 will go into weft inserting nozzle 20 places detection the detection of passing through sectional area N1, bypass nozzle 36 places pass through sectional area N2, and the water that detects spray finish time θ e and output to output control instruction device 76.

The monitor-control apparatus 64 that comprises signal processing part 641 constitutes the checkout gear finish time that freely flies away of the θ p finish time that freely flies away of the end of freely flying away that detects parallel Y with line tension meter 60 and rotary encoder 65.Monitor-control apparatus 64 arrives detector 62 and rotary encoder 65 with spraying top, and formation detects the injection top due in checkout gear that arrives the injection top due in of preposition from the injection top of the water of going into weft inserting nozzle 20 injections.Monitor-control apparatus 64 constitutes and detects the injection checkout gear finish time that water sprays the finish time with detectors of load 63 and rotary encoder 65.Monitor-control apparatus 64 passes through the sectional area checkout gear with the 1st of the sectional area that passes through that potentiometer 77 constitutes jet 201 places of detecting weft inserting nozzle 20.Monitor-control apparatus 64 passes through the sectional area checkout gear with the 2nd of the sectional area that passes through that potentiometer 78 constitutes jet 473 places of detecting bypass nozzle 36.

The result that operational part 642 is handled based on the signal at signal processing part 641 places, calculate expression from the state that freely flies away to the injection of restraining the loom anglec of rotation θ p when the flying away state transitions length L p that goes ahead of the rest.Spraying in advance, (going ahead of the rest) length L p is the applicant is willing to record among the 2003-145355 (spy opens 2004-346457) according to the spy computational methods (being willing to the computational methods of Fig. 5 of 2003-145355 based on the spy) calculating.The monitor-control apparatus 64 that comprises operational part 642 is the injection of calculate the spraying first line length length computation devices of going ahead of the rest.

Formation is sprayed generation as water and is connected with air pressure source 30 via air pipe line 29 with the balancing gate pits 221 in the bellows 22 of the fluid spring mechanism of drive source.Below, the pressure of balancing gate pit 221 is also referred to as adapt air spring pressure.On air pipe line 29, clamped expulsion pressure regulator 68.Expulsion pressure regulator 68 is for adjusting the so-called empty electric conversion means of restriction by calutron.

Between expulsion pressure regulator 68 and bellows 22, on air pipe line 29, be connected with decompression gradient regulator 69.Based on Figure 13 the formation of decompression gradient regulator 69 is described.

On air pipe line 29, be connected in parallel to three electromagnetic opening and closing valves 70,71,72, on each electromagnetic opening and closing valve 70,71,72, connect a pair of accumulator 73,74,75 respectively.If electromagnetic opening and closing valve 70,71,72 is carried out excitation makes it become out state, then accumulator (accumulator) 73,74,75 is communicated with air pipe line 29.If electromagnetic opening and closing valve 70,71,72 is carried out demagnetization make it become the state of closing, then disconnect being communicated with between accumulator 73,74,75 and the air pipe line 29.

The minimum volume S of the balancing gate pit 221 in the volume of accumulator 73 and the bellows 22 equates.The volume of accumulator 74 is made as 2 times of volume 2S of the volume S of accumulator 73, and the volume of accumulator 75 is made as 3 times of volume 3S of the volume S of accumulator 73.The combination of the switching of the volume of the summation of the accumulator 73,74,75 that is communicated with air pipe line 29 by electromagnetic opening and closing valve 70,71,72 can be carried out 7 kinds of selections till 0～6S.Below, the volume of the summation of the accumulator 73,74,75 that will be communicated with air pipe line 29 is called the concubine volume.

Curve Pa in the chart of Figure 14 represents the volume of balancing gate pit 221 and the relation between the pressure in the balancing gate pit 221.Pressure P i is the pressure of the volume of balancing gate pit 221 when maximum, and pressure P m is the volume pressure hour of balancing gate pit 221.If the volume of balancing gate pit 221 increases, then the pressure in the balancing gate pit 221 like that, reduces pressure in the mode of advancing along curve Pa shown in the arrow U2 of Figure 14.Like that, the degree of the decompression variation of degree that the decompression of pressing along the air in the balancing gate pit 221 that curve Pa advances changes and the water expulsion pressure of going into weft inserting nozzle 20 places equates shown in the arrow U2 of Figure 14.

The degree that the decompression of the pressure in the balancing gate pit 221 that represents with curve Pa changes diminishes greatly along with the concubine volume becomes.Below, the degree that the decompression of the pressure in the balancing gate pit 221 that will represent with curve Pa changes is called the decompression gradient.The decompression gradient can be adjusted according to the combination of the switching that changes electromagnetic opening and closing valve 70,71,72.

Shown in Figure 11,12, expulsion pressure regulator 68, electric driver 66,67 accepted the control of the control instruction device 76 that is made of computer.

Pass through sectional area N1, N2, the injection length L p that goes ahead of the rest with what obtain in the monitor-control apparatus 64.Freely fly away the θ p finish time, spray each information N1, N2, Lp, θ p, θ j, the θ e that top due in θ j and water sprays the θ e finish time and be transported in the control instruction device 76.In control instruction device 76, import and set the desired value N1o by sectional area N1, the desired value N2o that passes through sectional area N2, the injection desired value Lpo of length L p in advance in advance.Desired value θ po, the desired value θ jo that sprays top due in θ j, and the desired value σ o that disperses of the θ p finish time that freely flies away of the θ p finish time freely fly away, control instruction device 76 is corresponding to the deviation between discrete and each desired value N1o, N2o of the mean value of each information N1, N2, Lp, θ p, θ j and the θ p finish time that freely flies away, Lpo, θ po, θ jo, the σ o, to the adjustment state of the adjustment state of expulsion pressure regulator 68, decompression gradient regulator 69, and the adjustment state of electric driver 66,67 carry out FEEDBACK CONTROL.The mean value of each information N1, N2, Lp, θ p, θ j and the θ p's finish time that freely flies away is discrete, be meant certain during in 1 minute the mean value of sampled data for example.

The adjustment state of so-called expulsion pressure regulator 68 is meant that expulsion pressure regulator 68 is adjusted into certain pressure status with adapt air spring pressure.The adjustment state of so-called decompression gradient regulator 69 is meant that decompression gradient regulator 69 is adjusted into the concubine volume state of certain volume (in these 7 kinds of volumes of 0～6S 1).The adjustment state of so-called the 1st electric driver 66 is meant that the 1st electric driver 66 will go into the sectional area that passes through at injection 201 places of weft inserting nozzle 20 and be adjusted into certain state by sectional area.The adjustment state of so-called the 2nd electric driver 67 is meant that the 2nd electric driver 67 is adjusted into certain state by sectional area with the sectional area that passes through at jet 473 places of bypass nozzle 36.Go into jet 201 places of weft inserting nozzle 20 the passing through sectional area N2, spray length L p in advance of injection 473 places that pass through sectional area N1, bypass nozzle 36, the θ p finish time that freely flies away, spray top due in θ j and water and spray finish time θ e and become the object of FEEDBACK CONTROL.These control objects are adjusted control to the parallel guiding of going into weft inserting nozzle 20 with position, adapt air spring pressure and the concubine volume of the pin 48 of the position of pin 42, bypass nozzle 36.If the change adapt air spring pressure then can change the water expulsion pressure.If change the concubine volume, then can change the decompression gradient of water expulsion pressure.Can spray the θ e finish time by changing water, the variation of water between injection period when compensation change water expulsion pressure grade and decompression gradient.Jet 473 places by change bypass nozzle 36 pass through sectional area, make water spray the θ e change finish time.

Control instruction device 76 carries out following control, promptly to during certain for example one minute the injection length data of going ahead of the rest take a sample, adjust repeatedly one by one.

In the 4th embodiment, can obtain following effect.

(4-1) can by change go into weft inserting nozzle 20 jet 201 places pass through sectional area, change the sectional area of the water spray corresponding with the rugosity of parallel Y.Can change the sectional area that passes through by the adjustment state of change the 1st drive unit 66 into jet 201 places of weft inserting nozzle 20.The 1st electric driver 66 carries out self-adjusting device for the sectional area that passes through to jet 201 places of going into weft inserting nozzle 20 effectively.

(4-2) can by change go into weft inserting nozzle 20 jet 201 places jet 473 places that pass through sectional area and bypass nozzle 36 pass through sectional area, change the water yield to the supply of weft inserting device 20 sides.Can change water and spray the finish time by the adjustment state of change the 2nd electric driver 67 again.If change water sprays the finish time, the first line length of then variable injection.

Can be by the adjustment state of change the 2nd electric driver 67, change bypass nozzle 36 injection 473 places pass through sectional area.The 2nd electric driver 67 is effectively the sectional area that passes through at jet 473 places of bypass nozzle 36 to be carried out self-adjusting device.

(4-3) variable water expulsion pressure changes the water jet velocity.Can change the water expulsion pressure by the adjustment state of change expulsion pressure regulator 68.The speed that can utilize adjustment to spray water is adjusted the first line length of injection and is freely flown away the finish time.The expulsion pressure regulator is 68 effectively to spraying first line length and carrying out self-adjusting device the finish time of freely flying away.

(4-4) the decompression gradient of the pressure waveform of variable water expulsion pressure changes the speed into the water spray in latitude later stage.Can change the decompression gradient by the adjustment state of change decompression gradient regulator 69.If change decompression gradient, then because the jet velocity of the second half of water spray changes, and the speed of flying away of latter half of parallel changes, institute is so that produce speed difference between parallel and the injection water, thus the first line length of variable injection.Can utilize the adjustment of decompression gradient, adjust and spray first line length, decompression gradient regulator 69 is to carry out self-adjusting device to spraying first line length effectively.

(4-5) in the past, owing to need carry out the decomposition of device, the replacing of parts, assembling, screw element are fastening etc. had to rely on artificial operation, so be difficult to be implemented in fully in the automation of the weft inserting device in the water jet looms.But, in the present embodiment, be configured for full-automatic weft inserting device, comprise that the weaving of the gamut of weaving condition can be finished under the aforesaid dependence manual work not carrying out.

Also can be following such embodiment in the present invention.

(1) in aforementioned the 1st embodiment, the height and position of jet 201 of going into weft inserting nozzle 20 is identical with the height and position of the jet 473 of bypass nozzle 36, even but the height and position of jet 201 of going into weft inserting nozzle 20 sometimes is different with the height and position of the jet 473 of bypass nozzle 36, also the situation that water falls can not take place.This is because the surface tension of water can not fall water, as long as go into difference between the height and position of jet 473 of the height and position of jet 201 of weft inserting nozzle 20 and bypass nozzle 36 in 10cm, hardly the phenomenon that water falls can take place.Promptly, fall in the scope in that water does not take place, the height and position of going into the jet 473 of the height and position of jet 201 of weft inserting nozzle 20 and bypass nozzle 36 exists difference also passable.That is, configurablely go into the jet 201 of weft inserting nozzle 20 and the jet 473 of bypass nozzle 36, make that the height and position into the jet 473 of the height and position of the jet 201 of weft inserting nozzle 20 and bypass nozzle 36 is in the relation that water falls that do not produce.

(2) in aforementioned the 1st embodiment, water route length from shunt portion 53 to the jet 201 of going into weft inserting nozzle 20, identical with the water route length of jet 473 from shunt portion 53 to bypass nozzle 36, but, in the scope that the deterioration of the pressure waveform that water sprays is allowed, make these water route length exist difference also passable.

(3) can use and go into the nozzle of weft inserting nozzle 20 same structures as the bypass nozzle.

(4) wish that the internal diameter of discharge pipe 19 is identical with the internal diameter of by-pass tube 35.Sameization of such internal diameter is effective for the raising of the pulse characteristic of pressure.

(5) wish that the material of discharge pipe 19 is identical with the material of by-pass tube 35.If discharge pipe 19 is different with the material of by-pass tube 35, then the expansion characteristics of discharge pipe 19 is different with the expansion characteristics of by-pass tube 35.The different deteriorations that bring the pulse characteristic of pressure of discharge pipe 19 and the expansion characteristics of by-pass tube 35.The inhibition of the unitized pulse characteristic to pressure of the material of discharge pipe 19 and by-pass tube 35 is effective.

(6) the bypass nozzle can be packed on the base 38 of weft inserting nozzle 20.That is, water is shunted to the bypass nozzle from the water supply path 382 in the base 38.Like this, the pipeline long (water route length) of going between weft inserting nozzle 20 and the bypass nozzle becomes extremely short.For long pressure fluctuation composition this point of inhibition cycle, hope can be shortened the water route length from the shunt portion 53 of discharge pipe 19 and by-pass tube 35 to water route length of going into weft inserting nozzle 20 and the jet from shunt portion 53 to bypass nozzle 36 473 as far as possible.

(7) situation that can not cover the gamut of weaving condition is also arranged, for example, the loom rotating speed is arranged and to knit wide change amplitude less, only change the situation that parallel kind (line rugosity) gets final product.In this case, will there is no need to change significantly the water expulsion pressure to the distribution ratio of going into weft inserting nozzle 20 the sides water yield of supplying with and the water yield of supplying with to bypass nozzle 36 sides as main adjustment object.Therefore, in this case, can use and utilize the helical spring latitude pump of going into.

(8) can use linear solenoid to go into the electric driver of the position of the parallel guiding usefulness pin 42 in the weft inserting nozzle 20 as change.

(9) can use the electric driver of linear solenoid as the position of the pin 48 in the change bypass nozzle 36.

Claims (12)

1. the weft inserting device in the water jet looms sprays by going into the water that the latitude pump is supplied with from going into weft inserting nozzle, thereby parallel is gone into latitude, it is characterized in that,

Having can be with water from going into the latitude pump to aforementioned diversion mechanism of going into the water supply path shunting of weft inserting nozzle from aforementioned, and aforementioned diversion mechanism has the bypass nozzle, sprays towards atmospheric pressure region from the water of aforementioned bypass nozzle ejection.

2. the weft inserting device in the water jet looms as claimed in claim 1, aforementioned diversion mechanism has from aforementioned water supply path shunt water route along separate routes, aforementioned bypass nozzle is connected on the end of aforementioned shunt water route, the length of the part from the shunt portion of aforementioned water supply path and aforementioned shunt water route to aforementioned water supply path of going into weft inserting nozzle, with identical to the length of the shunt water route of bypass nozzle from aforementioned shunt portion.

3. as the weft inserting device in claim 1 or the described water jet looms of claim 2, be provided with anti-sealing and state the water that falls into weft inserting nozzle and aforementioned bypass nozzle in the past and fall anti-locking mechanism.

4. the weft inserting device in the water jet looms as claimed in claim 3, aforementioned water falls anti-locking mechanism and constitutes, dispose and aforementionedly go into the jet of weft inserting nozzle and the jet of aforementioned bypass nozzle, so that the height and position of the jet of the height and position of aforementioned jet of going into weft inserting nozzle and aforementioned bypass nozzle is in the relation that water falls that do not produce.

5. the weft inserting device in the water jet looms as claimed in claim 4, aforementioned water fall anti-locking mechanism and constitute, and go into the jet of weft inserting nozzle and the jet of aforementioned bypass nozzle is configured on the sustained height position with aforementioned.

6. the weft inserting device in the water jet looms as claimed in claim 3, the height and position of the jet of aforementioned bypass nozzle than the height and position of aforementioned jet of going into weft inserting nozzle more by the top,

Aforementioned water falls anti-locking mechanism and has: the height and position that the water from aforementioned bypass nozzle ejection can be stored in aforementioned jet of going into weft inserting nozzle is responsible for and the discharge looped pipeline that is connected with the aforementioned discharge person in charge at aforementioned height and position of going into the jet of weft inserting nozzle by the discharge of below

Water storage face in being responsible near the exhaust of the injection oral-lateral of aforementioned bypass nozzle, with the jet of aforementioned bypass nozzle between be the air section of being responsible for coating by aforementioned discharge,

Water storage face in being responsible for away from the exhaust of the injection oral-lateral of aforementioned bypass nozzle opens at atmospheric pressure region, exceed aforementioned discharge be responsible for the height and position of the connecting portion of aforementioned discharge looped pipeline, the water of aforementioned discharge in being responsible for, flow to the aforementioned discharge looped pipeline from aforementioned connecting portion.

7. the weft inserting device in the water jet looms as claimed in claim 3, the height and position of the jet of aforementioned bypass nozzle than the height and position of aforementioned jet of going into weft inserting nozzle more by the top,

Aforementioned water falls anti-locking mechanism and has: accept to be responsible for, to be responsible for the discharge looped pipeline that is connected and to be arranged on than aforementioned discharge with aforementioned discharge above more leaning on than aforementioned height and position of going into the jet of weft inserting nozzle and be responsible for the check-valves that more leans on upstream side with the connecting portion of aforementioned discharge looped pipeline from the discharge of the water of bypass nozzle ejection

Aforementioned connecting portion opens at atmospheric pressure region, and interior water is responsible in the aforementioned discharge that exceeds the height and position of aforementioned connecting portion, flow into the aforementioned discharge looped pipeline from aforementioned connecting portion.

8. as the weft inserting device in claim 1 or the described water jet looms of claim 2, the aforementioned sectional area that passes through of going into the jet place of weft inserting nozzle is modifiable, and the sectional area that passes through at the jet place of aforementioned bypass nozzle is modifiable.

9. the weft inserting device in the water jet looms as claimed in claim 8, the aforementioned sectional area that passes through of going into the jet place of weft inserting nozzle changes by the 1st electric driver, and the sectional area that passes through at the jet place of aforementioned bypass nozzle changes by the 2nd electric driver.

10. the weft inserting device in the water jet looms as claimed in claim 8, the aforementioned sectional area that passes through of going into the jet place of weft inserting nozzle can be at 1.2mm ²～5mm ²Change in the scope.

11. the weft inserting device in the water jet looms as claimed in claim 8, the sectional area that passes through at the jet place of aforementioned bypass nozzle can be at 0mm ²～5mm ²Change in the scope.

12. as the weft inserting device in claim 1 or the described water jet looms of claim 2, aforementioned water expulsion pressure of going in the latitude pump takes place use drive source, comprises the pressure of the compressible gasiform fluid fluid spring mechanism as the spring force use.

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