JP2016113719A - Cooling device for water-jet loom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling device capable of cooling a heat generation source by using water used for weft insertion in a water-jet loom without affecting weft insertion.SOLUTION: Water W, which is supplied from a water supply source 2 and flows through a water supply source pipe 3, is divided by a branch joint 4 and flows into a water supply main pipe 5 and a cooling water branch pipe 6. A pipe diameter of the cooling water branch pipe 6 is set depending on a calorific value of a weft engagement member 9. Relatively large amount of water W flowing into the supply main pipe 5 flows into a confluent pipe 8 through a collective joint 7. Relatively small amount of water W flowing into the cooling water brach pipe 6 is supplied into a water channel 14 of a water conduction block 10 on the weft engagement member 9 and cools the weft engagement member 9. The water W that passed through the water channel 14 of the weft engagement member 9 runs through the cooling water branch pipe 6 and joins the confluent pipe 8 through the collective joint 7. The water W joined in the confluent pipe 8 flows into a water supply tank 18 and adequately replenishes water amount consumed in the weft insertion by a weft insertion nozzle 16.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cooling device in a water jet loom.

  In the weft length measuring and storing device provided in the loom, the weft locking member that locks the weft of the storage drum pulls up the electromagnetic pin from the storage drum by the operation of the solenoid to release the weft. Since the solenoid normally operates around 1000 times per minute, it generates a large amount of heat. When the coil temperature rises due to its own heat generation, the solenoid has a problem in that the suction force of the electromagnetic pin is reduced, so that the timing of lifting the electromagnetic pin is deviated and a weft insertion failure occurs.

  Patent Document 1 discloses a cooling device for a pin support device (corresponding to a weft locking member) of a weft length measuring storage device. The weft length measuring and storing device in the jet loom disclosed in Patent Document 1 includes a weft measuring and storing drum, a pin supporting device having a built-in solenoid opposed to the weft measuring and storing drum, and the solenoid moving forward and backward in the pin supporting device. And a pin for entering and leaving the weft length measuring storage drum. A chamber is formed in the pin support device, and an air blowing hole for blowing cooling air from the side is provided in the pin support device so that an aerodynamic force does not act directly in the moving direction of the pin. The air blowing hole and the chamber communicate with each other through a plurality of air communicating holes so that the pressure of the cooling air entering the chamber from the air blowing hole is balanced in the axial direction of the pin.

  Patent Document 2 discloses a cooling device that cools a heat generation source of an air jet loom. The air jet loom of Patent Document 2 has a configuration in which a regulator, an air tank, and an on-off valve are sequentially arranged in an air pipe extending from an air supply source to a weft insertion nozzle. As the heat generation source, a plurality of opening drive motors of an electronic opening device are illustrated. The periphery of the plurality of opening drive motors is covered with a jacket, and a space formed between the periphery of the opening drive motor and the jacket is used as an air passage.

  One end of the air passage is connected to an air supply source by air piping, and the other end of the air passage is connected to a regulator by air piping. The air supplied from the air supply source flows through the air passage around the opening drive motor, thereby exchanging heat between the opening drive motor and the air in the air passage to cool the opening drive motor. The air that has cooled the opening drive motor is supplied to the air tank via the regulator, and is supplied from the air tank to the weft insertion nozzle via the on-off valve.

Japanese Utility Model Publication No. 1-173183 JP 2007-212358 A

  Since Patent Document 1 has a configuration in which cooling air is blown around a solenoid in a pin support device, in a water jet loom, it is assumed that cooling is performed using water used for weft insertion. Impossible. When water enters the pin support device, the coil constituting the solenoid comes into direct contact with the water, which may cause a leakage. Even if measures are taken to prevent leakage, water acts as a resistance to the forward and backward movement of the pin, causing a shift in the operation timing of the pin and affecting the weft insertion.

  Patent Document 2 discloses that, in an air jet loom, before supplying air used for a weft insertion nozzle to an air tank, the entire amount of air supplied from an air supply source is passed through an air passage formed around an opening drive motor. The opening drive motor is cooled. When such a cooling method is applied to a heat generation source of a water jet loom and water used for weft insertion is passed through a water passage formed around the heat generation source, the above-described problem does not occur. However, since the water used for weft insertion bypasses the heat generation source and is supplied to the water supply tank, the water supply path becomes longer, pressure loss in the water supply pipe increases, and water shortage in the water supply tank is reduced. It tends to occur. Water shortage in the water tank greatly affects the weft insertion function of the water jet loom.

  In addition, depending on the installation environment of the water jet loom, it is necessary to cool the water supplied to the water supply tank in order to prevent the propagation of germs and the loss of thread oil. In particular, when the cooled water is passed through a heat generation source as in the invention of Patent Document 2, depending on the temperature difference between the temperature of the cooled water and the outside air temperature, dew condensation occurs on the constituent members of the heat generation source, The drive system of the source may be affected.

  An object of the present invention is to cool a heat generation source using water used for weft insertion of a water jet loom without affecting the weft insertion.

  Claim 1 comprises a water supply tank for storing water sent from a water supply source and a pump for supplying water from the water supply tank to a weft insertion nozzle, and the water supplied by the pump is jetted from the weft insertion nozzle. In a cooling device for cooling a heat generation source of a water jet loom for charging, a water supply main pipe connected to the water supply source is branched into a water supply main pipe and a cooling water branch pipe, and the water supply main pipe is connected to the water supply tank The cooling water branch pipe is connected to the water supply tank through a water flow block that is in contact with the heat generation source.

  According to the first aspect, the heat generation source can be sufficiently cooled by utilizing a part of the water used for weft insertion without causing a shortage of water in the water supply tank. In particular, it is possible to eliminate the problem of dew condensation in the heat generation source even when water is cooled to prevent the propagation of various germs in the water supply tank and the drop of thread oil.

  According to a second aspect of the present invention, the pipe diameter of the cooling water branch pipe is set smaller than the pipe diameter of the water supply main pipe. According to the second aspect, by reducing the diameter of the cooling water branch pipe with respect to the main water supply pipe, the shortage of water in the water supply tank can be prevented more reliably.

  According to a third aspect of the present invention, the heat generation source is a weft locking member of a weft length measuring storage device. According to the third aspect of the present invention, it is possible to eliminate the operation timing shift due to the temperature rise of the weft locking member and to perform stable weft insertion control.

  According to a fourth aspect of the present invention, the heat generation source includes the weft locking member, and a gripper disposed between the weft length measuring storage device and the weft insertion nozzle to sandwich the weft. The pipe is characterized in that the water flow block that contacts the weft locking member and the water flow block that contacts the gripper are connected in series. According to the fourth aspect of the present invention, the structure for cooling can be simplified by connecting the water passage blocks contacting the respective heat generation sources such as the weft locking member and the gripper in series by the cooling water branch pipe. can do.

  The present invention can cool the heat generation source without affecting the weft insertion by using the water used for the weft insertion of the water jet loom.

It is a block diagram which shows the cooling device of the water jet loom in 1st Embodiment. It is a partial cross section front view which shows the cooling path | route in a weft locking member. It is a block diagram which shows the cooling device of the water jet loom in 2nd Embodiment. It is a partial cross section front view which shows the cooling path | route in a gripper.

(First embodiment)
A first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a block diagram showing a water supply path of a cooling device 1 in a water jet loom. In the cooling device 1, a water supply source 2 such as a water supply or a water storage tank is connected to a branch joint 4 by a water supply source pipe 3. The branch joint 4 branches the water supply source pipe 3 into one water supply main pipe 5 and one cooling water branch pipe 6.

  The water supply main pipe 5 is connected to the junction pipe 8 by the collective joint 7. Accordingly, a part of the weft insertion water W flowing through the water supply source pipe 3 passes through the water supply main pipe 5 and the collective joint 7 and is supplied to the junction pipe 8. The cooling water branch pipe 6 connects the branch joint 4 and one end of a water passage block 10 provided in the weft locking member 9 of the weft length measuring and storage device, and the other end of the water passage block 10 and the collective joint 7. Is connected.

  As shown in an enlarged view in FIG. 2, the weft locking member 9 includes a main body 12 having a solenoid 11 and an electromagnetic pin 13 mounted so as to be movable forward and backward in a state of protruding from one end of the main body 12. A water passage block 10 is provided at the other end of the main body 12. When the solenoid 11 is not energized, the electromagnetic pin 13 is advanced to the outside of the main body 12 by the urging force of a spring (not shown) built in the main body 12, and is stored in a storage drum (not shown) of the weft length measuring storage device. The weft is locked by engaging with the peripheral surface.

  When the solenoid 11 is energized, the electromagnetic pin 13 is actuated by electromagnetic force, retracts in a direction away from the storage drum, and releases the weft on the storage drum. The weft on the storage drum is released at the weft insertion start time, but the weft insertion is usually performed about 1000 times per minute, so that the solenoid 11 is energized frequently and the temperature of the weft locking member 9 rises. .

  The water flow block 10 is provided in contact with the other end surface of the main body 12 (the end surface opposite to the one end side where the electromagnetic pins 13 are provided), and the water flow path 14 passes through the water flow block 10. ing. A cooling water branch pipe 6 connected to the branch joint 4 is connected to one end of the water passage 14, and a cooling water branch pipe 6 connected to the collective joint 7 is connected to the other end of the water passage 14. Accordingly, a part of the weft insertion water W flowing through the water supply source pipe 3 is diverted by the branch joint 4, flows through the water passage 14 of the cooling water branch pipe 6 and the weft locking member 9, and is then joined by the collective joint 7. Joined to the junction pipe 8. The water W flowing through the water passage 14 can cool the weft locking member 9 via the water passage block 10.

  As shown in FIG. 1, a weft insertion device 15 of a water jet loom includes a weft insertion nozzle 16 that wefts Y into a warp opening, a pump 17 that supplies water W to the weft insertion nozzle 16 every weft insertion, and a weft A water supply tank 18 for storing a certain amount of water W for filling is provided. The junction pipe 8 connected to the collective joint 7 is connected to a water supply tank 18. During operation of the water jet loom, the pump 17 operates at the weft insertion time to pump water W required for one weft insertion from the water supply tank 18, pressurize the water W and supply it to the weft insertion nozzle 16. Water W is sprayed from the weft insertion nozzle 16 and weft Y is inserted. When the water W in the water supply tank 18 is used for weft insertion, the water W corresponding to the amount of water used is replenished to the water supply tank 18 from the junction pipe 8, and the water W in the water supply tank 18 is always kept at a constant amount. It is comprised so that.

  The water supply source pipe 3 and the junction pipe 8 are set to the same pipe diameter D. The pipe length L2 of the cooling water branch pipe 6 is longer than the pipe length L1 of the water supply main pipe 5. The pipe diameter D1 of the water supply main pipe 5 branched from the water supply source pipe 3 and the pipe diameter D2 of the cooling water branch pipe 6 are set to D = D1 + D2 and D1> D2.

  A part of the water W flowing through the water supply main pipe 3 branched to the cooling water branch pipe 6 has a larger pressure loss than the water supply main pipe 5, but after cooling the weft locking member 9, the collective joint 7 is used. To join the junction pipe 8.

  The pipe diameter D1 of the water supply main pipe 5 and the pipe diameter D2 of the cooling water branch pipe 6 are set according to the amount of heat generated in, for example, the weft locking member 9 serving as a heat generation source, and an appropriate amount of water is set by the cooling water branch pipe 6. The weft locking member 9 can be supplied.

  Depending on the installation state of the water jet loom, the water W supplied to the water supply tank 18 may be cooled in order to prevent the propagation of germs in the water supply tank 18 and the drop of the thread oil. Depending on the temperature difference between the water temperature of the cooled water W and the outside air temperature, dew condensation may occur on the constituent members of the weft locking member 9 and the function of the weft locking member 9 may be impaired. In the present embodiment, the pipe diameter D1 of the water supply main pipe 5 and the pipe diameter D2 of the cooling water branch pipe 6 are appropriate amounts of the water W flowing through the cooling water branch pipe 6 according to the water temperature and the outside air temperature of the water W. Thus, it is possible to prevent condensation on the weft locking member 9.

  In the first embodiment, the water W supplied from the water supply source 2 and flowing through the water supply source pipe 3 having the pipe diameter D is connected to the water supply main pipe 5 having a large pipe diameter D1 and a short pipe length L1 by the branch joint 4. The pipe diameter D2 is a small diameter and the pipe length L2 is branched to the long cooling water branch pipe 6. The pipe diameter D <b> 2 of the cooling water branch pipe 6 is set according to the amount of heat generated by the weft locking member 9.

  A relatively large amount of water W flowing to the water supply main pipe 5 flows to the junction pipe 8 via the collective joint 7. A relatively small amount of water W flowing in the cooling water branch pipe 6 is supplied to the water passage 14 of the water passage block 10 in the weft engagement member 9 to cool the weft engagement member 9. The water W that has passed through the water passage 14 of the weft locking member 9 joins the junction pipe 8 through the joint joint 7 by the cooling water branch pipe 6. The water W merged in the merge pipe 8 flows to the water supply tank 18 and appropriately replenishes the amount of water consumed by the weft insertion nozzle 16.

  In the first embodiment, heat is generated by using a part of the water W used for weft insertion without causing a shortage of water in the water supply tank 18 due to pressure loss of the cooling water branch pipe 6 that cools the heat generation source. The weft thread locking member 9 as a source can be sufficiently cooled. In particular, when the water W is cooled in order to prevent the propagation of germs in the water supply tank 18 and the drop of the oil in the yarn, the weft locking member 9 is cooled by using all the wetting water W as a heat generation source. It is possible to eliminate the problem of dew condensation in the weft locking member 9 that is likely to occur when used.

  Further, by setting the diameter of the cooling water branch pipe 6 to be smaller than that of the water supply main pipe 5, shortage of water in the water supply tank 18 is prevented and the amount of water flowing through the cooling water branch pipe 6 is used as a heat generation source. It can be easily adjusted according to the amount of heat generated by the weft locking member 9. Further, the operation timing shift due to the temperature rise of the weft locking member 9 is eliminated, and stable weft insertion control can be performed.

(Second Embodiment)
3 and 4 show the second embodiment. The same components as those of the first embodiment will be described with the same reference numerals, and detailed description thereof will be omitted. In the second embodiment, the weft locking member 9 and the gripper 19 can be cooled as a heat generation source. The gripper 19 is disposed between the weft length measuring storage device (not shown) and the weft insertion nozzle 16 and has a function of holding the weft Y after the weft insertion.

  As shown in an enlarged view in FIG. 4, the gripper 19 includes a main body 21 with a solenoid 20, a flat plate-like movable gripper 22 movably arranged on one end side of the main body 21, and a flat plate arranged to face the movable gripper 22. And a water passage block 24 fixed to the other end of the main body 21. The fixed gripper 23 is fixed to a part of a frame (not shown) or a mounting bracket (not shown) of the water jet loom.

  The movable gripper 22 has a shaft 25 protruding between the solenoids 20 on the back side, and a gap through which the weft Y passes is formed between the movable gripper 22 and the fixed gripper 23. When the solenoid 20 is energized at the end of weft insertion, the movable gripper 22 is actuated by electromagnetic force and is moved until it is crimped to the fixed gripper 23. The weft Y is clamped by pressing the movable gripper 22 and the fixed gripper 23. When the solenoid 20 is not energized, the movable gripper 22 is moved away from the fixed gripper 23 by a spring (not shown) built in the main body 21, and a gap is formed between the movable gripper 22 and the fixed gripper 23 so that the weft Y Is released. Since the solenoid 20 of the gripper 19 is energized after the weft insertion is completed, like the solenoid 11 of the weft locking member 9, the water jet loom is energized about 1000 times per minute, which causes heat generation.

  The water flow block 24 is fixed to the other end of the main body 21 in contact with the main body 21 in a wide area. The water passage block 24 is provided with a water passage 26 penetrating therethrough. The water flow path 26 of the water flow block 24 is connected to one end side of the cooling water branch pipe 6 connected to the other end of the water flow path 14 of the water flow block 10 in the weft locking member 9 and to the other end side of the collective joint. The cooling water branch pipe 6 connected to 7 is connected. Accordingly, the water passage 14 of the weft locking member 9 and the water passage 26 of the gripper 19 are connected in series by the cooling water branch pipe 6.

  In the second embodiment, the water W supplied from the water supply source 2 and flowing through the water supply source pipe 3 having the pipe diameter D is the water supply main pipe 5 having a large pipe diameter D1 and a short pipe length L1 by the branch joint 4. The pipe is diverted to the cooling water branch pipe 6 having a small pipe diameter D2 and a long pipe length L2. The pipe diameter D2 of the cooling water branch pipe 6 is set according to the amount of heat generated by the weft locking member 9 and the gripper 19.

  A relatively large amount of water W flowing to the water supply main pipe 5 flows to the junction pipe 8 via the collective joint 7. A relatively small amount of water W flowing in the cooling water branch pipe 6 is supplied to the water passage 14 of the water passage block 10 in the weft engagement member 9 to cool the weft engagement member 9. The water W that has passed through the water passage 14 is further supplied to the water passage 26 of the gripper 19 by the cooling water branch pipe 6 to cool the gripper 19.

  The water W that has passed through the water passage 26 of the gripper 19 joins the joining pipe 8 through the joint 7 through the cooling water branch pipe 6. The water W merged in the merge pipe 8 flows to the water supply tank 18 and appropriately replenishes the amount of water consumed by the weft insertion nozzle 16.

  In the second embodiment, in addition to the operational effects of the first embodiment, a plurality of heat generation sources, such as the weft locking member 9 and the gripper 19, are connected in series by the cooling water branch pipe 6, thereby cooling the second embodiment. The configuration for can be simplified.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications are possible within the scope of the gist of the present invention, and can be implemented as follows.

(1) The heat generation source in the water jet loom is not limited to the weft locking member 9 and the gripper 19 shown in the first and second embodiments, but is dedicated to the drive motor and the warp feeding device of the water jet loom. It can be implemented in a motor, a dedicated winding motor of a woven fabric winding device, or another heat generation source.
(2) As shown in the second embodiment, when cooling a plurality of heat generation sources, such as the weft locking member 9 and the gripper 19, the water supply source pipe 3 is connected to the water supply main pipe 5 and the water supply main pipe 5 by the branch joint 4. It is good also as a structure which branches to each cooling water branch pipe 6, and connects each heat generation source in parallel by each cooling water branch pipe 6. FIG.

(3) In the first and second embodiments, the water flow blocks 10 and 24 including the water flow paths 14 and 26 are jackets that cover the entire periphery of the heat generation source such as the weft locking member 9 and the gripper 19. You may comprise by shape.
(4) In the first and second embodiments, the relationship between the pipe diameter D1 and pipe length L1 of the water supply main pipe 5 and the pipe diameter D2 and pipe length L2 of the cooling water branch pipe 6 is D1 = D2, L1 = L2, It is also possible to set a relationship such as D1 <D2 and L1 <L2 or to set each relationship in various combinations.
(5) The water supply main pipe 5 and the cooling water branch pipe 6 may be directly connected to the water supply tank 18 without using the collective joint 7 or the junction pipe 8.

DESCRIPTION OF SYMBOLS 1 Cooling device 2 Water supply source 3 Water supply main pipe 4 Branch joint 5 Water supply main pipe 6 Cooling water branch pipe 7 Collective joint 8 Junction pipe 9 Weft lock member 10, 24 Water flow block 11 Solenoid 13 Electromagnetic pin 14, 26 Water flow path 15 Weft insertion device 16 Weft insertion nozzle 17 Pump 18 Water supply tank 19 Gripper 20 Solenoid 22 Movable gripper 23 Fixed gripper W Water Y Weft

Claims (4)

A water jet that stores water supplied from a water supply source and a pump that supplies water from the water supply tank to a weft insertion nozzle and injects water supplied by the pump from the weft insertion nozzle to perform weft insertion. In the cooling device for cooling the heat generation source of the loom,
The water supply main pipe connected to the water supply source is branched into a water supply main pipe and a cooling water branch pipe, the water supply main pipe is connected to the water supply tank, and the cooling water branch pipe is in contact with the heat generation source. A cooling device in a water jet loom, wherein the cooling device is connected to the water supply tank via a block.   The cooling device for a water jet loom according to claim 1, wherein a diameter of the cooling water branch pipe is set to be smaller than a diameter of the water supply main pipe.   The cooling device for a water jet loom according to claim 1 or 2, wherein the heat generation source is a weft locking member of a weft length measuring storage device.   The heat generation source includes the weft locking member, and a gripper that is disposed between the weft length measuring storage device and the weft insertion nozzle to sandwich the weft, and the cooling water branch pipe includes the weft The cooling device for a water jet loom according to claim 3, wherein the water flow block in contact with the locking member and the water flow block in contact with the gripper are connected in series.

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