KR20010014571A - Device for changing a channel of weft insertion in a water jet loom - Google Patents

Abstract

PURPOSE: To provide a picking water changing equipment for water jet loom, having simple piping arrangement, easily compactifiable and capable of reducing equipment cost. CONSTITUTION: This equipment comprises as follows: A nonmoving body 27 has a pair of feeding canals 36 and 37 and a common drainage 38. An inner tube 29 comprising a slider 28 has plural intermediate canals 291, 292, 297 and 298 and plural intermediate drainage 293, 294, 295 and 296. The intermediate canals 291, 292, 297 and 298 are communicated with picking nozzles 14, 15, 16 and 17. An outlet 361 of the feeding canal 36 is capable of connecting with a pair of intermediate canals 291 and 292 and a pair of intermediate drainage 293 and 294 by vertical motion of the slider 28. An outlet 371 of the feeding canal 37 is capable of connecting with a pair of intermediate drainage 295 and 296 and a pair of intermediate canals 297 and 298.

Description

Weft Insertion Switching Device for Water Spray Weaving Machine {DEVICE FOR CHANGING A CHANNEL OF WEFT INSERTION IN A WATER JET LOOM}

The present invention includes a plurality of weft insertion nozzles for injecting the weft yarn by injection of pressure water, and a plurality of pumps for supplying the pressure water in synchronization with the weft insertion timing, wherein the plurality of weft yarns are in any one of the plurality of pumps. The present invention relates to a weft inserting water switching device in a water spray weaving machine for supplying pressure water to any of the insertion nozzles.

As a water spray weaving machine which weft inserts a plurality of types of weft yarns using a plurality of weft insertion nozzles, there exist some which were disclosed by Unexamined-Japanese-Patent No. 50-48260 and Unexamined-Japanese-Patent No. 3-29344, for example. In the water spray weaving machine of Japanese Patent Application Laid-open No. 50-48260, any one of the pair of weft inserting nozzles is arranged to be switched to the position at which the weft is ejected (weft inserting position). The weft insertion nozzle which is switched to the weft insertion position is connected to the hollow passage for supplying the pressure water, and the pressure water is supplied to the weft insertion nozzle arranged at the weft insertion position. The hollow passage is connected to a single pressure source.

In the water spray weaving machine of Japanese Patent Application Laid-Open No. 3-29344, a pair of floatingly arranged weft insert nozzles are connected to the pump separately through a first control valve. Each pump pumps water in synchronism with the weft insertion timing. Therefore, the pressure water fed from the pump connected to the weft insertion nozzle on the side which does not inject the pressure water at the weft insertion timing, that is, does not eject the weft yarn, is drained through the second control valve.

In the water spray weaving machine of Japanese Patent Application Laid-open No. 50-48260, the pressure water pumped from a single pressure source is necessarily used for one of the pair of weft inserting nozzles. Therefore, the problem of drainage of the pressure water which is not supplied to the weft insertion nozzle does not occur. The weft insert of the weft thread is preferably injected from the weft insert nozzle at a pressure number suitable for the type of weft yarn, and when weft inserting two weft yarns having a large difference in properties, the weft inserting pressure is the number of pressures appropriate for each weft type. It is better to eject from the weft insert nozzle. However, in the water spray weaving machine which has only a single pressure source, the weft insertion method of dividing the number of pressures according to the type of weft is impossible.

In the water-jet weaving machine of Japanese Patent Application Laid-Open No. 3-29344, at least two types of weft yarns can be wefted with a pressure number of pressure corresponding to each type. However, in order to do so, a pair of first control valves and one second control valve are required, and the piping configuration is complicated, which makes it difficult to miniaturize the apparatus and to increase the apparatus cost.

An object of the present invention is to provide a weft inserting water converting device in a water spray weaving machine which is simple in pipe construction, can be easily downsized, and can also reduce apparatus costs.

BRIEF DESCRIPTION OF THE DRAWINGS The 1st Embodiment is shown, (a) is a whole piping figure, (b) is principal part sectional drawing.

The main part front view which shows the weft insertion nozzle.

Fig. 3 is a side view of the main portion showing the selector valve and the weft insertion nozzle;

4A is a cross-sectional view taken along the line Al-Al of FIG. 1B, FIG. 4B is a cross-sectional view taken along the line A2-A2 of FIG. 1B, and FIG. Section BB line.

Fig. 5A is a sectional view showing the main parts of the first specific relative position, Fig. 5B is a sectional view showing the main parts of the second specific relative position, and Fig. 5C is a third Fig. 5 (d) is a sectional view showing the principal parts of the state of a fourth specific relative position.

Fig. 6A is an exploded perspective view of the main part, and Fig. 6B is a exploded perspective view of the main part.

Fig. 7 shows a state in which a separate sliding body is mounted on the floating body, (a) is a sectional view of the main part showing the state of the first specific relative position, and (b) is a sectional view of the main part showing the state of the second specific relative position. . (c) is principal part sectional drawing which shows the state of a 3rd specific relative position, (d) is main part sectional drawing which shows the state of a 4th specific relative position.

8 is a sectional view showing the principal parts of a second embodiment;

9 is an exploded perspective view showing the respective cylinders of the rotor 48.

(A) is a principal part sectional drawing which shows the state of a 1st specific relative position, (b) is a principal part cross section which shows the state of a 2nd specific relative position, (c) is a state of a 3rd specific relative position. Main part sectional drawing which is shown, (d) is main part sectional drawing which shows the state of a 4th specific relative position.

Fig. 11 shows a state in which a separate sliding body is mounted on a floating body, (a) is a sectional view of the main part showing the state of the first specific relative position, and (b) is a sectional view of the main part showing the state of the second specific relative position. (c) is a principal part sectional view which shows the state of a 3rd specific relative position, (d) is a principal part sectional view which shows the state of a 4th specific relative position.

12 is an exploded perspective view showing the respective cylinders of the rotor 48A.

Fig. 13 shows a third embodiment, (a) is a longitudinal sectional view of a main portion showing a state of a first specific relative position, and (b) is a sectional view taken along line C-C in (a).

(A) is sectional drawing of the D-D line of FIG. 13 (a), (b) is sectional drawing of the E-E line of FIG. 13 (a), (c) is sectional drawing of the F-F line of FIG.

(A) is a principal part longitudinal cross-sectional view which shows the state of a 2nd specific relative position, (b) is G-G sectional drawing of (a).

(A) is a principal part longitudinal cross-sectional view which shows the state of a 3rd specific relative position, (b) is H-H sectional drawing of (a).

* Description of the symbols for the main parts of the drawings *

10, 11, 12: pump 14, 15, 16, 17: weft insertion nozzle

26, 51, 73: selector valves 27, 44, 66: floating body to supply

28, 28A, 67: Sliding body to be optional

291, 292, 297, 298: Medium channel

293, 294, 295, 296: intermediate drainage

36, 37: supply channel 38: collective drainage

39, 50: switching motor constituting the switching means

45, 46: supply water 48, 48A: rotor for selection

481, 482, 483, 484: Intermediate channel

485, 486, 487, 488: intermediate drainage

681, 682, 683: Medium channel

684, 685, 686, 687, 688, 689: intermediate drainage

69, 70, 71: water supply

For this reason, the present invention includes a plurality of pumps for supplying pressure water to a plurality of weft inserting nozzles for ejecting the weft yarn by injection of pressure water, and any one of the plurality of weft inserting nozzles is any of the plurality of pumps. A weft inserting water switching device for supplying pressure water to one object is provided, and in the invention of claim 1, the supply unit includes a plurality of supply channels communicating in a 1: 1 manner to the plurality of pumps, and the number of the plurality of weft inserting nozzles. A selection unit having an intermediate channel and an intermediate drainage channel, and one of the plurality of supply channels and one of the plurality of intermediate channels to weft the pressure water in the supply channel through the intermediate channel. And a weft inserting water switching device including switching means for switching relative positions of said supplying portion and said selection portion to supply to an insertion nozzle, A supply channel other than the supply channel communicating with the intermediate channel corresponding to each of the supply portion communicating with one of the plurality of intermediate channels and the specific relative position of the selection unit is in communication with the intermediate drain channel.

If the relative position of the supply section and the selection section is any one of a plurality of specific relative positions at the weft insertion timing, only one of the plurality of weft insertion nozzles injects the pressure water. The pressure water being pumped from a pump other than the pump supplying the pressure water to the weft inserting nozzle spraying the pressure water is drained via the intermediate drain.

In the invention of claim 2, in claim 1,

The intermediate channel and the intermediate drainage channel of the selection section are channels that do not directly couple to an external pipe having a floating section, and the switching means moves the selection section to switch the relative positions of the supply section and the selection section.

Moving the selector to switch the relative positions of the supply and selector is simple in terms of piping configuration.

In the invention of claim 3, in claim 2,

An intermediate drain passage and an aggregate drain passage communicating with a supply channel of pressure water not supplied to the weft inserting nozzle in a state of the plurality of specific relative positions, wherein the supply unit comprises an aggregate drain channel communicating with an intermediate drain channel of the selection unit; To communicate.

The pressure water being pumped from a pump other than the pump supplying the pressure water to the weft inserting nozzle spraying the pressure water is drained via the intermediate drainage channel and the collective drainage passage.

In the invention of claim 4, the supply unit is a floating body according to any one of claims 2 and 3, wherein the supply unit is fixed to the frame side having a plurality of outlets of the plurality of supply passages on the side in a rod shape. Sliding connected to the side of the pipe-like sliding body fitted to move linearly, the outlet is connected to the intermediate channel or the intermediate drain on the inner surface of the sliding body joined to the side of the floating body.

The interposed configuration of the rod-shaped floating body and the pipe-shaped sliding body is advantageous for miniaturization of the device. Moreover, the structure which moves a selection part linearly is simple in the point which smoothly switches the relative position of a supply part and a selection part.

In the invention of claim 5, the plurality of weft inserting nozzles are fixedly mounted on the selector side, and in the state of the plurality of specific relative positions, the plurality of weft inserting nozzles are connected to the supply channel. The weft inserting nozzle supplied with the pressure water was positioned at a predetermined weft inserting position.

The configuration in which the plurality of weft inserting nozzles and the selection unit are integrally moved is suitable in terms of synchronizing the movement of the weft inserting nozzle to be weft inserted and the supply timing of the pressure water with a small device.

In the invention of claim 6, the supply channel communicating with at least one of the plurality of pumps is selectively connected to a plurality of intermediate channels so as to supply pressure water to the plurality of weft inserting nozzles. I could do it.

If the properties of plural weft yarns of different types are not significantly different, there is no problem even when weft weaving of the plural weft yarns is performed under the same pressure. The configuration in which pressure water is supplied to the plurality of weft inserting nozzles from the same pump is effective for weft insertion when the properties of the plurality of weft yarns are not significantly different.

Embodiment of the Invention

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment which actualized this invention is described based on FIGS.

The pumps 11 and 12 shown in FIG. 1A are driven by a cam mechanism (not shown) which is driven in conjunction with a loom spindle (not shown). The pumps 11 and 12 pump water in the water level tank 13, and the pumps 11 and 12 pump the water pumped out of the water level tank 13 at a weft insertion timing during one rotation of the loom. , 16, 17). Charge valves 20 and 21 are interposed on the feed pipes 18 and 19 between the pumps 11 and 12 and the water level tank 13, and water pipes 22 and 23 are connected to the charge valves 20 and 21. It is. The charge valves 20 and 21 are normally closed so that tap water does not flow into the water supply lines 18 and 19 from the water pipes 22 and 23. However, when restarting after stopping the loom for a long time, the charge valves 20 and 21 are switched from the closed state to the open state so that the tap water is inserted into the weft insert nozzles 14, 15, 16 and 17 via the pumps 11 and 12. Supplied to the side. If the water in the weft insertion nozzle dries at the start of weft insertion, the weft insertion failure will occur, but this charge valve (20, 21) switching when restarting after stopping the loom for a long time will cause the water in the weft insertion nozzle at the beginning of weft insertion. Prevent it from drying out.

The selector valve 26 is connected to the downstream water supply pipes 24 and 25 of the pumps 11 and 12. The selector valve 26 consists of a rod-shaped floating body 27 fixed to the side frame 57 (see FIG. 3) and a pipe-like sliding body 28 slidably fitted to the floating body 27. The sliding body 28 consists of the inner cylinder 29 sliding-connected to the side surface of the floating body 27, and the outer cylinder 30 fitted in the inner cylinder 29 and fixed. As shown in FIG. 4, the outer cylinder 30 is fixed to the inner cylinder 29 by tightening the screw 43. By removing the screw 43 from the outer cylinder 30, the inner cylinder 29 can be removed from the outer cylinder 30. As shown in FIG. The rod portion 431 of the screw 43 is inserted into the position regulating recess 301 formed on the outer circumferential surface of the outer cylinder 30, and the rod part 431 inserted into the position regulating recess 301 is the outer cylinder 30. ) And the relative position of the inner cylinder 29 are regulated.

The holder 31 is clamped and fixed to the outer cylinder 30 by the screw 32, and the weft insertion nozzles 14, 15, 16, 17 are attached to the holder 31. As shown in FIG. The height position indicated by R in Figs. 1A, 2 and 3 is a weft yarn in which weft inserting nozzles 14, 15, 16, and 17 for weft inserting the weft yarns Y1, Y2, Y3, and Y4 are located. The insertion position.

As shown in FIG. 2 and FIG. 3, the support plate 58 is fastened and fixed to the side frame 57 of the loom by the bolt 59, and the base 60 is fixedly attached to the support plate 58. As shown in FIG. . The floating body 27 is mounted on the base 60 and fixed. The water supply lines 24 and 25 are pulled in the base 60. A guide rod 61 is placed upright and fixed to the support plate 58. The guide rod 61 is parallel to the floating body 27, and the bracket 62 fixedly mounted to the outer cylinder 30 of the sliding body 28 is slidably connected to the guide rod 61 to be guided up and down. It is. Thereby, the sliding body 28 can move up and down in the state which always made the direction of the weft insertion nozzle 14, 15, 16, 17 constant without rotating in the axial direction of the floating body 27. As shown in FIG.

As shown in Figs. 4A and 4B, in the holder 31, a plurality of water supply passages 311 are formed in correspondence with the weft insertion nozzles 14, 15, 16, 17 and 1: 1. have. (A) of FIG. 4 shows sectional drawing of the line A1-A1 of (b) of FIG. 1, (b) of FIG. 4 shows sectional drawing of the line A2-A2 of (b) of FIG. 1, (c) of FIG. Shows a cross-sectional view taken along the line BB of FIG. Each water supply passage 311 communicates with an annular chamber 33 formed around each of the weft insertion nozzles 14, 15, 16, and 17. The pressure water supplied to the water supply passage 311 is injected from the injection hole 35 via the water passage 341 around the annular chamber 33 and the weft guide needle 34. The weft yarns Y1, Y2, Y3, and Y4 that have passed through the weft guide needle 34 are inserted into the weft opening not shown by the injection of pressure water. In addition, the weft yarn Y1 and the weft yarn Y2 do not have a big difference in the properties (the injection pressure of the pressure water, the traction force with respect to the flow rate), and the weft yarns Y3 and the weft yarn Y4 do not have a big difference in properties.

As shown in FIGS. 1B and 6B, at the lower side of the floating body 27, a first supply channel 36 and a second supply channel 37 of the floating body 27 are provided. It is formed in the axis line L1 direction. On the upper side of the floating body 27, an aggregate drainage passage 38 is formed in the axis L1 direction. A water supply line 24 is connected to the first supply channel 36, and a water supply line 25 is connected to the second supply channel 37. A pair of outlets 361 and 371 and a pair of inlets 381 and 382 are formed on the side of the floating body 27. The outlet 361 is an outlet of the first supply channel 36, and the outlet 371 is an outlet of the second supply channel 37. The pair of inlets 381 and 382 are inlets of the collective drainage path 38.

As shown in (a) and (b) of FIG. 6, the inner cylinder 29 constituting the sliding body 28 has a pair of intermediate channels 291 and 292 and a pair of intermediate drains 293 and 294. ) Are arranged in order from above. Similarly, the inner cylinder 29 is formed with a pair of intermediate drainage channels 295 and 296 and a pair of intermediate drainage channels 297 and 298 arranged in this order from above. The intermediate channel 291 communicates with the annular chamber 33 of the weft insertion nozzle 14 via one of the plurality of water supply passages 311 in the holder 31 shown in FIG. The intermediate channel 292 is connected to the annular chamber 33 of the weft insertion nozzle 15 via one of the plurality of water supply passages 311 in the holder 31 shown in FIG. 4B. The intermediate channel 297 communicates with the annular chamber 33 of the weft insertion nozzle 16 via one of the plurality of water supply passages 311 in the holder 31 shown in FIG. 4C. The intermediate channel 298 communicates with the annular chamber 33 of the weft insertion nozzle 17 via one of the plurality of water supply passages 311 in the holder 31 shown in FIG. 4C. The outlet 361 of the first supply channel 36 shown in FIG. 6B is a pair of intermediate channels 291 and 292 and a pair of intermediate drainage channels by the vertical movement of the sliding body 28 ( 293, 294, respectively. The outlet 371 of the second supply channel 37 is connectable to the pair of intermediate drainage channels 295 and 296 and the pair of intermediate channel 297 and 298 by the vertical movement of the sliding body 28. .

As shown to Fig.1 (a), the drain pipe line 41 is connected to the collective drainage path 38, and the atmospheric open type | mold water storage tank 42 is branch-connected to the drainage pipe 41. As shown to FIG. The water storage tank 42 is provided on the dobby stand 65 (shown in FIG. 2 and FIG. 3) which is installed on the side frame 57. As shown in FIG. The water storage tank 42 is provided with the protruding pipe 421 formed in the lower part, the atmospheric opening hole 422 formed in the upper part, and the shielding plate 423 arrange | positioned under the atmospheric opening hole 422. A branch pipe 411 is connected to the drain pipe passage 41, and the branch pipe 411 is connected to the protruding pipe 421. The drain pipe 41 is connected to the water level tank 13.

As shown in Fig. 3, a side of the side frame 57 is fixedly mounted with a heide guide bracket 63, and an upper portion of the hed guide bracket 63 is fixedly mounted with a hed guide 64. The servo motor type switching motor 39 is formed on the upper part of the head guide bracket 63. A crank disc 391 is fixedly mounted to the output shaft 392 of the switching motor 39. One end of the crank rod 40 is connected to the crank disc 391, and the other end of the crank rod 40 is connected to the bracket 62. When the switching motor 39 rotates, the sliding body 28 moves up and down to switch the relative positions of the sliding body 28 and the floating body 27. The switching motor 39, the output shaft 392, the crank disc 391 and the crank rod 40 constitute switching means for switching the relative positions of the floating body 27 and the sliding body 28. The relative position of the sliding body 28 with respect to the floating body 27 is specified by four relative positions shown to Fig.5 (a), (b), (c), (d).

In the state of the 1st specific relative position of the floating body 27 and the sliding body 28 shown to Fig.5 (a), the outlet 361 of the 1st supply channel 36 and the intermediate channel 291 are In communication with each other, the outlet 371 of the second supply channel 37 and the intermediate drainage passage 295 communicate with each other, and the intermediate drainage passage 295 and the inlet 382 of the collective drainage passage 38 communicate with each other. In the state of the first specific relative position, the weft insertion nozzle 14 is located at the weft insertion position R for weft inserting the weft yarn Y1 into the inclined opening. The pressure water pumped from the pump 11 is supplied to the weft insertion nozzle 14 via the first supply channel 36 and the intermediate channel 291. The pumped pressure water from the pump 12 is returned to the water level tank 13 via the second supply channel 37, the intermediate drainage channel 295, the collective drainage channel 38, and the drainage pipe 41.

In the state of the 2nd specific relative position of the floating body 27 and the sliding body 28 shown to FIG. 5B, the outlet 361 and the intermediate channel 292 of the 1st supply channel 36 are Is communicated with each other, the outlet 371 of the second supply channel 37 and the intermediate drain passage 296 are communicated with each other, and the intermediate drain passage 296 and the inlet 382 of the collective drain passage 38 communicate with each other. In the state of the second specific relative position, the weft insertion nozzle 15 is located at the weft insertion position R for weft inserting the weft yarn Y2 into the inclined opening. The pressure water pressurized from the pump 11 is supplied to the weft insertion nozzle 15 via the first supply channel 36 and the intermediate channel 292. The pressure water pumped from the pump 12 is returned to the water level tank 13 via the second supply channel 37, the intermediate drain channel 296, the collective drain channel 38, and the drain pipe 41.

In the state of the third specific relative position of the floating body 27 and the sliding body 28 shown in FIG. 5C, the outlet 361 and the intermediate drainage path 293 of the first supply channel 36 are In communication with each other, the outlet 371 of the second supply channel 37 and the intermediate channel 297 communicate with each other, while the intermediate drain 293 and the inlet 381 of the collective drain channel 38 communicate with each other. In the state of the third specific relative position, the weft insertion nozzle 16 is located at the weft insertion position R for weft inserting the weft yarn Y3 into the inclined opening. The pressure water fed from the pump 12 is supplied to the weft insertion nozzle 16 via the second supply channel 37 and the intermediate channel 297. The pressure water pumped from the pump 11 is returned to the water level tank 13 via the first supply channel 36, the intermediate drain 293, the collective drain 38 and the drain pipe 41.

In the state of the fourth specific relative position of the floating body 27 and the sliding body 28 shown in FIG. 5D, the outlet 361 and the intermediate drainage path 294 of the first supply channel 36 are The outlet port 371 of the second supply channel 37 and the intermediate channel 298 communicate with each other, and the intermediate channel 294 and the inlet port 381 of the collective drain channel 38 communicate with each other. In the state of the fourth specific relative position, the weft insertion nozzle 17 is located at the weft insertion position R for weft inserting the weft yarn Y4 into the inclined opening. The pressure water pumped from the pump 12 is supplied to the weft insertion nozzle 17 via the second supply channel 37 and the intermediate channel 298. The pressure water pumped from the pump 11 is returned to the water level tank 13 via the first supply channel 36, the intermediate drain channel 294, the collective drain channel 38, and the drain pipe 41.

In addition, a part of the water flowing through the drain pipe passage 41 is ejected into the water storage tank 42 from the branch pipe 411 shown in FIG. 1A, and the shielding plate 423 is used to discharge the water from the atmospheric opening hole 422. Prevent spills. In the water storage tank 42, a predetermined amount of water is soaked, and a part of it is discharged to the water level tank 13 through the drain pipe 41.

In the first embodiment, the following effects are obtained.

(1-1) The pressure water pumped from the pump 11 is supplied or drained to one of the two weft inserting nozzles 14 and 15 via the selector valve 26. The pressure water pumped from the pump 12 is supplied or drained to one of the two weft inserting nozzles 16, 17 via the selector valve 26. That is, the pressure water provided for the weft insertion is returned to the water level tank 13 through the selection valve 26 to drain. The configuration for switching and selecting the pressure water provided for the weft insertion and the pressure water not provided for the weft insertion into the single selection valve 26 results in the simplification, cost reduction, and miniaturization of the piping configuration of the entire weft insertion switching device.

(1-2) The relative position switching between the floating body 27 serving as the supply part and the sliding body 28 serving as the selection part is performed by moving the sliding body 28 up and down. The intermediate channels 291, 292, 297 and 298 and the intermediate drains 293, 294, 295 and 296 in the sliding body 28 are channels which do not directly couple to an external pipe having a floating part. The supply passages 36 and 37 and the collective drainage passage 38 in the floating body 27 are external piping having a floating portion (in the embodiment, the water supply passages 24 and 25 and the drainage passage 41, and the pump 11 12), the channel directly coupled to the reservoir tank 42 becomes a floating part. The structure for moving the sliding body 28 which does not have a channel directly coupled to the external pipe is simpler in configuration than the structure for moving the floating body 27 having the channel directly coupled to the external pipe. In other words, it is not necessary to configure the piping in consideration of problems related to high speed vibration of the external piping (piping damage, piping separation, etc.). Therefore, the structure which switches the relative position of a supply part and a selection part by moving the sliding body 28 which is a selection part is easy in piping construction.

(1-3) The collective drainage path 38 in the floating body 27 guides the pressure water which is not supplied to the weft insertion even when pumped from the pumps 11 and 12 to the water level tank 13. Therefore, only one external piping for drainage needs to be connected to the floating body 27, and a piping structure is simplified.

(1-4) When the pipe-like sliding body 28 is linearly moved, one of a plurality of specific relative positions of the floating body 27 and the sliding body 28 is easily released. The configuration of linearly moving the sliding body 28 as the selection part is simple in terms of smoothly switching the specific relative positions of the floating body 27 as the supply part and the sliding body 28.

(1-5) The fitted structure of the rod-shaped floating body 27 and the pipe-shaped sliding body 28 is advantageous for miniaturization of the weft inserting water switching device.

(1-6) The plurality of weft inserting nozzles 14, l5, 16, 17 arranged in multiple stages above and below are fixed to the sliding body 28 via the holder 31. As shown in FIG. Therefore, when the sliding body 28 is moved, the plurality of weft inserting nozzles 14, 15, 16, and 17 are also integrally moved, and in communication with the supply channels 36 and 37 in the state of the plurality of specific relative positions. The weft insertion nozzle through which the pressure water is supplied from the intermediate channel is located at the predetermined weft insertion position (R). The configuration in which the plurality of weft inserting nozzles 14, 15, 16, 17 and the sliding body 28 are integrally moved is used to synchronize the movement of the weft inserting nozzles to be inserted and the supply timing of the pressure water with a small device. fit.

(1-7) (a), (b), (c), and (d) of FIG. 7 show a state in which the inner cylinder 29A having a shape different from that shown in FIGS. Indicates. In the inner cylinder 29A, the intermediate channel 292 and the intermediate drain channel 296 are reversed from the case of the inner cylinder 29. The state of the specific relative position of FIG. 7A is in the state of supplying the pressure water of the pump 11 to the weft insertion nozzle 14, and the state of the specific relative position of FIG. 7B is the pump 12 Is supplied to the weft insertion nozzle 15. 6B differs in that the pressure water of the pump 11 is supplied to the weft insertion nozzle 15. The state of the specific relative position of FIG. 7C is in the state of supplying the water pressure of the pump 12 to the weft insertion nozzle 16, and the state of the specific relative position of FIG. 7D is the pump 12 Is supplied to the weft insertion nozzle 17. Replacement of the inner cylinder 29 and the inner cylinder 29A is simple by removing the screw 43. Therefore, the replacement of the pressure water supply relationship between the pumps 11 and 12 and the weft insertion nozzles 14, 15, 16 and 17 can be facilitated by replacement of other inner cylinders.

(1-8) When the loom stops, the inside of the drainage pipe 41 located downstream from the water storage tank 42 may be underpressure due to the water flowing to the water level tank 13 side shown in Fig. 1A. When the negative pressure inside the drain pipe 41 downstream of the water storage tank 42 spreads to the weft insertion nozzles l4, 15, 16 and 17, the water inside the weft insertion nozzles 14, 15, 16 and 17 It is absorbed and the good injection of pressure water is inhibited. The presence of the atmospheric open water storage tank 42 prevents the negative pressure inside the drain pipe 41 downstream of the water storage tank 42 from spreading and being absorbed by the weft insertion nozzles 14, 15, 16 and 17.

(1-9) Since the water accumulated in the water storage tank 42 flows slowly into the drain pipe 41 via the branch pipe 411, the interior of the collective drainage channel 38 and the supply channel 36, 37 is always It is filled with water. Therefore, after weaving, especially when weft insertion is carried out with the pressure water from the pumps 11 and 12 after a long period of time, the water in the weft insertion nozzles 14, 15, 16, 17 dries out. Therefore, the water in the weft insertion nozzles 14, 15, 16, 17 dries up, and it is prevented that a defect occurs in the weft insertion.

(1-10) The piping configuration in which the high pressure water pipe (50 to 100 kg / cm 2) is flexible is difficult. The structure in which the floating body 27 for guiding the vertical movement of the plurality of weft inserting nozzles 14, 15, 16, 17 is fixed to the side frame 57 is connected to a pipeline of high pressure water (50-100 kg / cm 2). It enables the piping configuration to be floating.

Next, the second embodiment of (a), (b), (c) and (d) of FIGS. 8, 9 and 10 and (a), (b), (c) and (d) of FIG. Describe the form of. The same code | symbol is attached | subjected to the same structural part as 1st Embodiment.

The selection valve 51 in this embodiment consists of a rod-shaped floating body 44 and a pipe-shaped rotor 48 fitted to the floating body 44. The rotor 48 rotatable about the axis L2 of the floating body 44 has a three-layer structure consisting of three cylinders 52, 53, and 54. The holder 55 is fixedly attached to the rotor 48 by the screw 56, and the weft insertion nozzles 14, 15, 16, and 17 are annularly arranged and fixedly attached to the holder 55. As shown in FIG.

The first supply channel 45 and the second supply channel 46 are formed in the rod-shaped floating body 44, and the outlet 451 and the second supply water of the first supply channel 45 are formed. The outlet 461 of the furnace 46 is formed in the peripheral surface of the floating body 44. The first supply channel 45 is in communication with the pump 11, and the second supply channel 46 is in communication with the pump 12. A drainage passage forming flange 441 is integrally formed on the circumferential surface of the floating body 44, and a drainage passage ring 47 is screwed on the circumferential surface of the floating body 44. The drainage channel forming flange 441 and the drainage channel forming ring 47 form an annular collective drainage channel 442. Two inlets 443 and 444 are formed in the drainage channel forming flange 441 at symmetrical positions about the axis L2. Inlets 443 and 444 are in communication with the collective drainage passage 442. Cogwheel portion 551 is formed on the peripheral surface of holder 55, and drive gear 501 of changeover motor 50 is engaged with cogwheel portion 551.

The position control ring 49 is screwed to the front end side of the floating body 44. The rotor 48 is positioned between the positioning ring 49 and the drainage forming flange 441. Four weft inserting nozzles 14, 15, 16, 17 are arranged and fixed to the rotor 48 around the floating body 44. The rotor 48 is provided with the same number of intermediate channels 481, 482, 483, 484 as the number of weft inserting nozzles 14, 15, 16, 17. The intermediate channels 481, 482, 483, 484 are in correspondence with the weft insertion nozzles 14, 15, 16, 17 by 1: 1. Inlets of the intermediate channels 481, 482, 483, 484 are formed in the barrel 52 constituting the rotor 48. The rotor 48 is formed with intermediate drainage channels 485, 486, 487, and 488 in the same number as the number of weft inserting nozzles 14, 15, 16, and 17. As shown in FIG. 9 shows an exploded perspective view showing the respective cylinders 52, 53, 54 of the rotor 48.

When the switching motor 50 rotates, the rotor 48 rotates, and the relative positions of the rotor 48 serving as the selection unit and the floating body 44 serving as the supply unit are switched. The relative position of the rotor 48 with respect to the floating body 44 is specified by four relative positions shown to (a), (b), (c), (d) of FIG. In this particular relative position state, any one of the intermediate drainage passages 485, 486, 487, and 488 communicates with the collective drainage passage 442 through the inlet 443. Arrows Q in Figs. 10A, 10B, 10C, and 10D are the number of pressures supplied to the weft insertion nozzles 14, 15, 16, and 17 when viewed in the direction of the axis L2. Indicates the flow direction.

In the state of the 1st specific relative position of the floating body 44 and the rotor 48 shown to Fig.10 (a), the outlet port 451 and the intermediate channel 481 of the 1st supply channel 45 are In communication, the outlet 461 of the second supply channel 46 and the intermediate drain channel 485 communicate with each other. In the state of the first specific relative position, the weft insertion nozzle 14 is located at the weft insertion position R. As shown in FIG. The pressure water pressurized from the pump 11 is supplied to the weft insertion nozzle 14 via the first supply channel 45 and the intermediate channel 481. The pressure water pumped from the pump 12 is returned to the water level tank 13 via the second supply channel 46, the intermediate drain channel 485, and the collective drain channel 442.

In the state of the 2nd specific relative position of the floating body 44 and the rotor 48 shown to FIG. 10 (b), the outlet port 451 and the intermediate channel 482 of the 1st supply channel 45 are In communication with each other, the outlet 461 of the second supply channel 46 and the intermediate drain channel 486 communicate with each other. In the state of the second specific relative position, the weft insertion nozzle 15 is located at the weft insertion position R. As shown in FIG. The pressure water pumped from the pump 11 is supplied to the weft insertion nozzle 15 via the first supply channel 45 and the intermediate channel 482. The pressure water pumped from the pump 12 is returned to the water level tank 13 via the second supply channel 46, the intermediate drain 486 and the collective drain 442.

In the state of the third specific relative position of the floating body 44 and the rotor 48 shown in FIG. 10C, the outlet port 451 of the first supply channel 45 and the intermediate drain channel 487 communicate with each other. The outlet 461 of the second supply channel 46 and the intermediate channel 483 communicate with each other. In the state of the third specific relative position, the weft insertion nozzle 16 is located at the weft insertion position R. As shown in FIG. The pressure water pumped from the pump 12 is supplied to the weft insertion nozzle 16 via the second supply channel 46 and the intermediate channel 483. The pressure water pumped from the pump 11 is returned to the water level tank 13 via the first supply channel 45, the intermediate drainage channel 487, and the collective drainage channel 442.

In a state of the fourth specific relative position of the floating body 44 and the rotor 48 shown in FIG. 10D, the outlet 451 of the first supply channel 45 and the intermediate drain channel 488 communicate with each other. The outlet 461 of the second supply channel 46 and the intermediate channel 484 communicate with each other. In the state of the fourth specific relative position, the weft insertion nozzle 17 is located at the weft insertion position R. As shown in FIG. The pressure water pumped from the pump 12 is supplied to the weft insertion nozzle 17 via the second supply channel 46 and the intermediate channel 484. The pressure water pumped from the pump 11 is returned to the water level tank 13 via the first supply channel 45, the intermediate drainage channel 488, and the collective drainage channel 442.

(A), (b), (c), and (d) of FIG. 11 show the state which inserted the other rotor 48A to the floating body 44. FIG. FIG. 12: shows the exploded perspective view which expanded each cylinder 52, 53, 54 of the rotor 48A. In the rotor 48A, the intermediate channel 482 and the intermediate channel 486 are replaced. The state of the specific relative position of FIG. 11A is in the state which supplies the water pressure of the pump 11 to the weft insertion nozzle 14, and the state of the specific relative position of FIG. 11B is the pump 12 Is supplied to the weft insertion nozzle 15. The state of the specific relative position of FIG. 11C is in the state which supplies the water pressure of the pump 12 to the weft insertion nozzle 16, and the state of the specific relative position of FIG. 11D is the pump 12 Is supplied to the weft insertion nozzle 17. Replacement of the rotor 48 and the rotor 48A can be performed simply by removing the positioning ring 49 and the screw 56. Therefore, the replacement of the pressure water supply relationship between the pumps 11 and 12 and the weft insertion nozzles 14, 15, 16 and 17 can be easily performed by replacing other rotors.

Also in this embodiment, the same effects as in (1-1) to (1-3) and (1-5) to (1-7) in the first embodiment can be obtained. Moreover, when the rotor 48 which becomes a selection part rotates, one of the several specific relative positions of the floating body 44 and the rotor 48 which become a supply part will come out easily. The configuration for rotating the selection rotor 48 is easy to smoothly change the specific relative position of the floating body 44 and the rotor 48.

Next, the third embodiment of FIGS. 13 to 16 will be described. The same code | symbol is attached | subjected to the same structural part as 1st Embodiment.

In this embodiment, three weft inserting nozzles 14, 15, 16 and three pumps 10, 11, 12 are used. Three supply channels 69, 70, and 71 are formed in the floating body 66 that forms the selector valve 73 together with the sliding body 67. The inner channel 68 constituting the sliding body 67 together with the outer cylinder 30 is formed with intermediate channels 681, 682, 683 and intermediate channels 684, 685, 686, 687, 688, 689. have.

(A), (b) and (a), (b) and (c) of FIG. 13 supply the pressure water from the pump 10 to the weft insertion nozzle 14 and at the same time the other pump 11, The case of draining the pressure water from 12) is shown. 13B is a sectional view taken along the line CC of FIG. 13A, FIG. 14A is a sectional view taken along the line DD of FIG. 13A, and FIG. 14B is a view of FIG. EE line sectional drawing of FIG. 14, (c) is sectional drawing FF line of FIG. In particular, in the third embodiment, as shown in Figs. 14A, 14B, and 14C, the inner cylinder 68 of the sliding body 67 is different from the first embodiment, and the inner cylinder ( Between the 68 and the outer cylinder 30, a thin cylinder 75 in which a water supply passage 311 part is drilled is interposed.

In the state of the 1st specific relative position of the floating body 66 and the sliding body 67 shown to Fig.13 (a), (b), the outlet port 691 of the supply channel 69, and the intermediate channel ( 681) is communicated. In addition, the outlet 701 of the supply channel 70 and the intermediate drain 684 communicate with each other, and the intermediate drain 684 and the inlet 722 of the collective drain duct 72 communicate with each other. The outlet 711 and the intermediate drainage passage 685 communicate with each other, while the intermediate drainage passage 685 and the inlet 723 of the collective drainage passage 72 communicate with each other. In the state of the first specific relative position, the weft insertion nozzle 14 is located at the weft insertion position R. As shown in FIG. The pressure water pumped from the pump 10 is supplied to the weft inserting nozzle 14 via the supply channel 69, the intermediate channel 681, and the water supply passage 311 with reference to FIG. 14 (a). . Moreover, the pressure water pumped from the pump 11 is refluxed to the water level tank 13 via the supply channel 70, the intermediate drain channel 684, the collective drain channel 72, and the drain pipe 41, and the pump ( The pressure water pumped from 12 is returned to the water level tank 13 via the supply channel 71, the intermediate drain channel 685, the collective drain channel 72, and the drain pipe line 41.

In the state of the 2nd specific relative position of the floating body 66 and the sliding body 67 shown to Fig.15 (a), (b), the outlet port 701 of the supply channel 70 and the intermediate channel ( 682 is communicated. In addition, while the outlet 691 of the supply channel 69 and the intermediate drain 686 communicate with each other, the intermediate drain 686 and the inlet 721 of the collective drain channel 72 communicate with each other. The outlet 711 and the intermediate drainage passage 687 communicate with each other, and the inlet 723 of the intermediate drainage passage 687 and the collective drainage passage 72 communicates with each other. In the state of the second specific relative position, the weft insertion nozzle 15 is located at the weft insertion position R. FIG. The pressure water pressurized from the pump 11 is supplied to the weft insertion nozzle 15 via the supply channel 70, the intermediate channel 682, and the water supply passage 311. In addition, the pressure water pumped from the pump 10 is returned to the water level tank 13 via the supply channel 69, the intermediate channel 686, the collective channel 72, and the drain pipe 41, and the pump ( The pressure water pumped from 12 is returned to the water level tank 13 via the supply channel 71, the intermediate drain channel 687, the collective drain channel 72, and the drain pipe line 41.

In the state of the third specific relative position of the floating body 66 and the sliding body 67 shown to FIGS. 16A and 16B, the outlet 711 and the intermediate channel of the supply channel 71 683) is communicated. The outlet 691 of the supply channel 69 and the intermediate drain 688 communicate with each other, and the intermediate channel 688 and the inlet 721 of the collective drain 72 communicate with each other. The outlet 701 and the intermediate drainage passage 689 communicate with each other, while the intermediate drainage passage 689 and the inlet 722 of the collective drainage passage 72 communicate with each other. In the state of the third specific relative position, the weft insertion nozzle 16 is located at the weft insertion position R. As shown in FIG. The pressure water pumped from the pump 12 is supplied to the weft inserting nozzle 16 via the supply channel 71 and the intermediate channel 683. In addition, the pressure water pumped from the pump 10 is returned to the water level tank 13 via the supply channel 69, the intermediate drain channel 688, the collective drain channel 72, and the drain pipe 41, and the pump ( The pressure water pumped from 11) is returned to the water level tank 13 via the supply channel 70, the intermediate drain channel 689, the collective drain channel 72, and the drain pipe 41.

In the case where the properties of the respective weft yarns passing through the weft inserting nozzles 14, 15, and 16 are significantly different, the configuration in which the pump is shared tends to be disturbed in terms of securing the weft insertion performance and securing the fabric quality. The configuration in which the weft insertion nozzle and the pump correspond to 1: 1 is effective when the properties of each weft thread passing through the weft insertion nozzles 14, 15 and 16 are significantly different.

In the present invention, the following embodiments are also possible.

(1) In the first embodiment shown in Fig. 5, a sliding body having a single intermediate drainage channel in which the intermediate drainage paths 293 and 294 are integrated and a single intermediate drainage path incorporating the intermediate drainage paths 295 and 296 are used. that.

(2) A loom having two or four weft inserting nozzles, wherein one pump is matched to one weft inserting nozzle.

(3) To supply pressure water to the weft inserting nozzle more than the number of pumps by three or more pumps.

(4) The present invention is applied to a loom in which a plurality of weft insert nozzles are fixedly arranged.

As described in detail above, in the present invention, the specific relative position of the supply unit and the selection unit communicating one of the plurality of supply channels and one of the plurality of intermediate channels is set to the same number as the number of intermediate channels. In each of the relative positions, the supply channel other than the supply channel communicating with the intermediate channel corresponding to each of the plurality of specific relative positions is connected to the intermediate drainage channel, so that the piping configuration is simple, miniaturization is easy, and the device cost is also high. It shows the excellent effect of being able to reduce.

Claims (6)

A plurality of weft inserting nozzles 14 to 17 for ejecting the weft yarns Y1 to Y4 by injection of pressure water, and a plurality of pumps 11 and 12 for supplying pressure water in synchronization with the weft inserting timing, In the weft insertion number switching device for supplying pressure water to any one of the plurality of weft insertion nozzle in any one of the plurality of pumps, A supply section 27 having a plurality of supply water passages 36 and 37 in communication with the plurality of pumps in a 1: 1 manner, A selection unit 28 having intermediate channels 291, 292, 297, 298 and intermediate drains 293, 294, 295, and 296 equal to the number of the weft inserting nozzles, and Switching means for switching the relative position of the supply section and the selection section so as to connect one of the plurality of supply channels and one of the plurality of intermediate channels to supply the pressure water in the supply channel to the weft insertion nozzle through the intermediate channel; 39, The supply channel communicating with one of the plurality of supply channels and one of the plurality of intermediate channels and the supply channel other than the supply channel communicating with the intermediate channel corresponding to each of the specific relative positions of the selection unit are intermediate. Weft inserting water switching device in a water spray weaving machine communicating with a drainage channel. 2. The water channel 291, 292, 297, 298 and the water channel 293, 294, 295, 296 of the selector 28 are channels not directly coupled to an external pipe having a floating portion. And said switching means (39) moves said selector to switch relative positions of said supply section (27) and said selector. 3. The supply section 27 according to claim 2, wherein the supply section 27 includes an aggregate drainage passage 38 that is in communication with the intermediate drains 293, 294, 295, and 296 of the selector 28, wherein In the state, weft inserting in the water spray weaving machine characterized in that the intermediate drainage channel communicating with the supply water passages 36 and 37 of the pressure water not supplied to the weft inserting nozzles 14 to 17 and the collective drainage passage are in communication with each other. Number switching device. 4. The floating body 27 according to claim 2 or 3, wherein the supply part is fixed to the frame side having the outlets 361, 371 of the plurality of supply water passages 36, 37 on the side in a rod shape. The selector is a pipe-shaped sliding body 28 fitted to slide in linear connection with the side of the floating body, and the outlet is the intermediate channel 291 on the inner side of the sliding body joined to the side of the floating body. And 292, 297, 298 or the intermediate drainage path (293, 294, 295, 296). 4. The plurality of weft inserting nozzles 14 to 17 are fixedly mounted on the selector 28 side, and in the state of the plurality of specific relative positions, the supply channel 36 And a weft inserting nozzle in the water spray weaving machine, characterized in that the weft inserting nozzle supplied with the pressure water from the intermediate water passages (291, 292, 297, 298) communicating with each other is positioned at a predetermined weft inserting position. 4. The water supply passage communicating with at least one of the plurality of pumps 11 and 12, wherein the plurality of weaving nozzles 14 to 17 supply pressure water to the plurality of weft inserting nozzles 14 to 17. Weft insertion switching device in a water spray weaving machine, characterized in that it can selectively communicate with the intermediate channel (291, 292, 297, 298).