JP4207851B2 - Waterproof device for depolarization opening device of water jet loom - Google Patents

Description

  The present invention relates to waterproofing of the connecting portion of a wire rope used in a depolarization opening device employed in a water jet loom.

A cam mechanism for driving the frame is installed on the floor, a spring mechanism is arranged on the upper side of the frame, and the cam mechanism, the spring mechanism and the frame are connected by a wire rope to transmit the opening motion to the frame. The negative opening device has been used as an opening device for looms for a long time while undergoing various improvements as disclosed in, for example, Patent Literature 1 and Patent Literature 2.
However, in a water jet loom that performs weft insertion using water jet, a negative opening device has not been put to practical use so far due to the problem of waterproofing.

As an opening device generally used in a water jet loom, there is a so-called positive opening device in which a cam and a frame are linked. Patent Document 3 discloses a technique in which waterproof means is applied to a positive opening device of a water jet loom.
That is, Patent Document 3 discloses a positive opening of a water-jet loom in which a tappet 12 is arranged below the cage frame 3 and the driving force of the tappet 12 is transmitted to the cage frame 3 via the link 15 and the link 14. An apparatus is disclosed. A waterproof plate 24 is installed above the tappet 12 and the link 15 so that water falling from the side of the gutter frame 3 is not directly applied to the tappet 12. Further, a part of the lower frame 3a of the collar frame 3, a connecting portion J1 between the lower frame 3a and the link 14, and a connecting portion J2 between the link 14 and the link 14 and the link 15 are covered with two sheets 26a and 26b. The top and bottom sides of both sheets are closed with woven fasteners 31 and 29, respectively, and the sides of the center are sewn or joined to form a waterproof tube 25, and water droplets scattered from the collar 3 and others are linked. And it is comprised so that a connection part may not be directly applied.
Japanese Utility Model Publication No. 58-97183 Japanese Utility Model Publication No. 2-57978 Japanese Utility Model Publication No. 53-56064

  In the conventional water jet loom, as disclosed in Patent Document 3, since the motion transmission mechanism from the drive mechanism to the eaves frame uses a positive opening device that is configured by link connection, water is applied directly. If it is not soaked directly in water, the grease of the connecting portions J1 and J2 will not flow out, and it was thought that there was no problem. That is, in the waterproof tube 25 of Patent Document 3, due to the structure of the opening device, it is unavoidable to form portions 30 and 27 that are always opened in the lower frame 3a of the frame frame and the cover portion of the link 15, from which moisture is easily formed. It was a structure that can penetrate into.

On the other hand, in the depolarization opening device disclosed in Patent Literature 1 and Patent Literature 2, a rope strong against bending and a rope strong against tension are connected by a caulking member or turned to adjust the length of the rope. It is common to use a buckle. Since these caulking members and turnbuckle materials are made of carbon steel or carbon steel plated, rusting will occur when used in an environment where high humidity and splashed water falls, such as a water jet loom. The problem arises that it occurs early and the strength of the parts decreases and the replacement cycle of the wire rope is accelerated.
Therefore, even if the waterproof tube 25 based on the conventional idea disclosed in Patent Document 3 is used in the depolarization opening device, the waterproof effect cannot be obtained.

  It is also conceivable to apply a resin coating or the like to prevent rusting of the wire rope caulking member or turnbuckle. However, since the caulking member and the wire rope near the turnbuckle are the most bent portions during the opening movement, the coating is easily peeled off, and the coating applied to the wire rope itself may peel off. For this reason, not only the rusting of the caulking member and the turnbuckle, but also the water penetrates into the core part of the wire rope to cause the rust to be generated on the wire. There is a problem.

  In some cases, the turnbuckle is adjusted using a tool or the like during installation of the loom or maintenance of the opening device, but at this time, the wire rope coating may be slightly damaged. As it is, there is no hindrance to the operation of the loom, and it can withstand the use for a predetermined period.However, when used in a water jet loom, the wire rope core material is rusted by the ingress of moisture, so the wire rope There is a problem of shortening the lifetime.

  In view of the above problems, the present invention makes it possible to use a depolarization opening device for a water-jet loom by applying appropriate waterproofing means to connecting portions such as turnbuckles and caulking members of wire ropes.

The invention according to claim 1 attaches a cylindrical cover to a wire rope connecting portion having a larger outer diameter than the wire rope between the wire ropes connecting the rod frame driving mechanism or the spring mechanism and the rod frame, At least the small-diameter portion on the opening end side of the cylindrical cover is formed of an elastic body, the inner diameter of the small-diameter portion is formed smaller than the outer dimension of the wire rope, and the central portion side of the cylindrical cover is smaller than the small-diameter portion. A large diameter portion having a large inner diameter is formed, the inner diameter is formed larger than the outer dimension of the wire rope connection portion, and the wire rope connection portion is accommodated in the non-contact state inside the large diameter portion. And
According to the first aspect of the present invention, the metal connection parts such as the caulking member of the wire rope and the turnbuckle are not directly exposed to the high-humidity environment where the scattered water exists, and the invasion of the scattered water is surely prevented. Therefore, the service life of a wire rope or the like can be maintained at the same level as when used for a loom that does not use water. Further, since a very simple configuration can be added, the depolarization opening device can be used in the water jet loom without greatly changing the conventional configuration. In addition, a gap can be formed between the wire rope connecting part such as a caulking member or a turnbuckle and the inner surface of the cylindrical cover, and even if the wire rope sways during the opening movement of the loom, the rubbing with the inner surface of the cylindrical cover Can be prevented, and damage to the cylindrical cover can be prevented.

The invention according to claim 2 is configured such that the central portion side of the cylindrical cover is formed of a rigid resin, the cylindrical cover is divided at the central portion side, and the divided portion is detachable. Features.
In the invention of claim 2, since the cylindrical cover is not easily recessed, rubbing between the inner wire rope connecting member and the damage due to rubbing can be reduced. Furthermore, if the cylindrical cover is separated at its center and one side is shifted along the wire rope, a turnbuckle will appear and the operation can be performed. Even the connecting portion can be easily adjusted in length.

  As described above, according to the invention of the present application, the water-injection type in a state that can sufficiently withstand the water environment without drastically changing the configuration of the depolarization opening device that has not been used in the water-jet loom due to the conventional measures against water. Can be used for looms.

(First embodiment)
Hereinafter, a first embodiment will be described with reference to FIGS.
FIG. 1 shows an overview of a depolarization opening device. In addition, although the figure shows about one frame, a plurality of frame is actually provided side by side, and the configuration thereof is the same, so the description is omitted.

  A cam 2 that is a drive mechanism of the eaves frame 1 is installed on the floor and is actively rotated by a drive shaft 3 connected to a motor (not shown). The rotation of the cam 2 is converted into a swinging motion of the cam follower 4 and the cam lever 5 and transmitted as a reciprocating motion of the wire ropes 6 and 7. On the other hand, on the side upper side of the flange frame 1, between the jack levers 10 and 11 rotatably supported by the frames 8 and 9 and the spring hangers 12 and 13 of the jack levers 10 and 11 and the frames 8 and 9. A spring mechanism comprising springs 14 and 15 that are latched is provided.

  One end of each of the wire ropes 6 and 7 is connected to the cam lever 5 and the other end is guided upward by a guide roller 16 and connected to the jack levers 10 and 11. Both sides of the saddle frame 1 are fixed to the wire ropes 6 and 7 by metal fittings 17 and 18. The wire ropes 6 and 7 are each provided with a turnbuckle 19 for adjusting the length in the vertical position, and the caulking member 20 connecting the two ropes is exposed at the horizontal position of the wire rope 7. ing.

  FIG. 2 shows details of the cylindrical cover 21 according to the present invention. The cylindrical cover 21 is molded into a cylindrical shape using an elastic material such as chloroprene rubber (CR) or acrylonitrile-butadiene rubber (NBR). Further, the cylindrical cover 21 has a large-diameter portion 22 formed on the center side and small-diameter portions 25 and 26 formed on the openings 23 and 24 at both ends.

The inner diameter D of the large diameter portion 22 is larger than the outer dimension d (see FIG. 3) of the turnbuckle 19, and when the cylindrical cover 21 is attached to the turnbuckle 19 as described later, the turnbuckle 19 is a cylinder. The dimension is set so as not to contact the inner surface of the cover 21. Further, the inner diameter H of the small diameter portions 25 and 26 is formed smaller than the outer dimension h (see FIG. 3) of the wire ropes 6 and 7 in the vicinity of the turnbuckle 19, and the cylindrical cover 21 is formed on the turnbuckle 19 as will be described later. When mounted, the small diameter portions 25 and 26 of the cylindrical cover 21 are dimensioned so that the wire ropes 6 and 7 are strongly tightened by their elasticity.
Although the cylindrical cover 21 is also attached to the crimping member 20, the cylindrical cover 21 for the crimping member 20 is different from that for the turnbuckle 19 in that the length of the cylindrical cover 21 is shortened according to the length of the crimping member 20. Only the same shape, material, etc. are used. Moreover, about the length of this cylindrical cover 21, if it sets to the common length which can cover both the turnbuckle 19 and the crimping member 20, it can be set as a common part and a number of parts can be reduced.

  With reference to FIG. 3, a method of mounting the cylindrical cover 21 will be described. FIG. 3A shows a part of the wire ropes 6 and 7 to which the turnbuckle 19 is attached. Apply grease to the open end 23 or 24 of the cylindrical cover 21 or the tip (not shown) of the wire ropes 6 and 7, and fit the cylindrical cover 21 to the wire rope 6 or 7. The small diameter portions 25 and 26 of the cylindrical cover 21 are smaller in diameter than the outer dimensions of the wire ropes 6 and 7, but can be smoothly fitted by applying grease (see FIG. 3B). FIG. 3C shows a state in which the cylindrical cover 21 is attached to the wire ropes 6 and 7 and the turnbuckle 19 is completely covered. In this state, the small diameter portions 25 and 26 are in close contact with the wire ropes 6 and 7, and the large diameter portion 22 accommodates the turnbuckle 19 in a non-contact state therein.

  FIG. 4 shows a method of attaching the cylindrical cover 21 to the caulking member 20 of the wire rope 7 located below the rod frame 1 shown in FIG. 1, but is the same as the case of the turnbuckle 19. Therefore, detailed description is omitted. 4A shows a state immediately before the cylindrical cover 21 is fitted to the wire rope 7 and attached to the caulking member 20, and FIG. 4B shows a state where the cylindrical cover 21 is attached to the caulking member 20. . In this state, the small diameter portions 25 and 26 are in close contact with the wire rope 7, and the large diameter portion 22 accommodates the caulking member 20 in a non-contact state therein.

  As shown in FIG. 1, the turnbuckle 19 is located on the side of the fence frame 1 and the caulking member 20 is located below the fence frame 1, and turns to impart opening motion to the fence frame 1 during operation of the loom. The buckle 19 reciprocates in the vertical direction, and the caulking member 20 reciprocates in the horizontal direction. On the other hand, pressure water is injected from an injection nozzle (not shown) to perform weft insertion. For this reason, a part of pressure water is scattered and falls on and adheres to a part of the depolarization opening device. However, the turnbuckle 19 and the caulking member 20 are completely covered because the cylindrical cover 21 is attached and the small diameter portions 25 and 26 are in close contact with the wire ropes 6 and 7. For this reason, splashed water does not fall directly on the turnbuckle 19 and the caulking member 20, and water droplets transmitted through the wire ropes 6 and 7 are completely blocked by the small diameter portions 25 and 26. Is prevented from filling and high humidity.

  Therefore, the turnbuckle 19 and the caulking member 20 do not generate rust, and the service life can be maintained as usual even when used in the water jet loom. Further, during the operation of the loom, the vicinity of the turn buckle 19 and the caulking member 20 is most easily bent by the vibration of the wire ropes 6 and 7, and a part of the wire ropes 6 and 7 is easily damaged. There is no effect on the service life. Furthermore, when the turnbuckle 19 is adjusted using a tool or the like, there may be a minute scratch on a part of the nearby wire ropes 6 and 7, but it is also completely covered by the cylindrical cover 21, There is no intrusion of moisture, and there is no effect on the service life.

  In the first embodiment, since the cylindrical cover 21 itself is made of an elastic member such as rubber, it is extremely lightweight and does not affect the power consumption for the reciprocating motion of the wire ropes 6 and 7. Since it is lightweight, the mounting position of the cylindrical cover 21 does not shift even when subjected to reciprocating motion or vibration, and the waterproof function can be maintained over a long period of time.

  The present invention is not limited to the first embodiment described above, and various modifications are possible within the scope of the gist of the invention, and can be carried out as follows.

  FIG. 5A is a cross-sectional view showing a part of an example in which the cylindrical cover 27 according to the second embodiment is attached to the turnbuckle 19. The cylindrical cover 27 is molded of an elastic body such as rubber, and the central portion thereof is formed in a large diameter portion 28 having an inner diameter larger than the outer dimension of the turnbuckle 19, and the outer shapes of the wire ropes 6 and 7 on the opening end 29 side. A small diameter portion 30 having an inner diameter smaller than the dimension is formed. Further, a grease reservoir 31 is formed in a part of the small diameter portion 30. In the present embodiment, the cylindrical cover 27 is fitted to the wire ropes 6 and 7 in a state where the grease reservoir 31 is filled with the grease 32 in advance, and is attached to the turnbuckle 19. Accordingly, the grease 32 of the grease reservoir 31 is not leaked by the small diameter portions 30 located on both sides, and the moisture to be infiltrated through the wire ropes 6 and 7 is surely blocked by the grease 32, and the turnbuckle 19 Never reach.

  FIG. 5B is a cross-sectional view showing a part of an example in which the cylindrical cover 33 according to the third embodiment is attached to the caulking member 20. The cylindrical cover 33 is formed of an elastic body such as rubber, and has the large diameter portion 34 and the small diameter portion 36 on the opening end 35 side as in the above embodiment. In the present embodiment, the grease injection port 37 is formed in a part of the large diameter portion 34. After the cylindrical cover 33 is attached to the caulking member 20, grease 38 is injected from the grease injection port 37 into the large diameter portion 34 and filled. Therefore, even if the moisture transmitted through the wire rope 7 passes through the small diameter portion 36, it is blocked by the grease 38 in the large diameter portion 34 and does not reach the caulking member 20. Further, the periphery of the caulking member 20 is not changed to a high humidity atmosphere. In addition, when this embodiment is attached to the turnbuckle 19, the grease 38 flows out each time the turnbuckle 19 is adjusted, and the grease 38 must be filled each time. Is preferred.

  FIG. 6 is a cross-sectional view showing a part of an example in which the cylindrical cover 39 according to the fourth embodiment is attached to the turnbuckle 19. The cylindrical cover 39 is a combination of the halved covers 40 and 41 divided into two, and is molded of a rigid resin. Each of the half covers 40 and 41 includes large diameter portions 42 and 43 having an inner diameter larger than the outer dimension of the turnbuckle 19 and a portion 45 having a smaller diameter than the large diameter portions 42 and 43 on the opening end 44 side (half split). Since the structure of the opening end side of the cover 41 is the same as that of the half cover 40, illustration and description are omitted). The small-diameter portion 45 is formed with an inner diameter slightly larger than the outer dimensions of the wire ropes 6 and 7 and is configured to be able to move smoothly when fitted to the wire ropes 6 and 7. Further, a seal member 46 made of an elastic material such as rubber is attached to the open end 44 so as to be integrated with the half cover 40. Further, the opening 47 of the seal member 46 is formed with an inner diameter smaller than the outer dimensions of the wire ropes 6 and 7, and functions as a small-diameter part of each of the above embodiments, and is in close contact with the surfaces of the wire ropes 6 and 7 when installed. To do.

  A female screw part 48 is provided on the split side of the large diameter part 42 and a male screw part 49 is provided on the split side of the large diameter part 43. By screwing the male screw part 49 into the female screw part 48, the half covers 40, 41 are provided. Are integrated into a cylindrical cover 39. Therefore, during the operation of the loom, the cylindrical cover 39 completely covers the turnbuckle 19 as in the above embodiment, and exhibits a waterproof function. When the turnbuckle 19 is adjusted, turn the half covers 40, 41 in the opposite direction to remove the screws, and move one of the half covers 40, 41 away from the turnbuckle 19. It can be exposed and can be adjusted. In this embodiment, the amount of movement of the cylindrical cover 39 for exposing the turnbuckle 19 is about half that of the previous embodiment, and the adjustment work can be facilitated.

  FIG. 7A is a cross-sectional view showing a part of an example in which the cylindrical cover 50 according to the fifth embodiment is attached to the turnbuckle 19. This embodiment basically has the same structure as the first embodiment, and the cylindrical cover 50 made of an elastic material has a large diameter portion 51 and a small diameter portion 53 on the opening end 52 side. The small-diameter portion 53 has several annular protrusions 54 on the inner surface thereof, and the annular protrusion 54 comes into close contact with the surfaces of the wire ropes 6 and 7 when the cylindrical cover 50 is attached to the turnbuckle 19. In the present embodiment, the cylindrical cover 50 is fitted to the wire ropes 6 and 7 and the contact portion when moving to the turnbuckle 19 is only the annular protrusion 54 having a small contact area. The cover 50 can be easily attached.

  FIG. 7B is a cross-sectional view showing a part of an example in which the cylindrical cover 55 according to the sixth embodiment is attached to the turnbuckle 19. This embodiment is basically the same structure as the first embodiment, and the cylindrical cover 55 made of an elastic material has a large diameter portion 56 and a small diameter portion 58 on the opening end 57 side. In the configuration different from that of the first embodiment, the ear portion 59 is integrally attached to the outer peripheral portion of the small diameter portion 58. Accordingly, when the tubular cover 55 is fitted to the wire ropes 6 and 7 and attached to the turnbuckle 19, the operator can grasp and move the ear portion 59. Can be facilitated.

  The cylindrical cover of each of the above embodiments includes a large diameter portion having an inner diameter larger than the outer dimensions of the wire rope connecting portion of the turn buckle 19 and the caulking member 20, and this large diameter portion is the wire rope connecting portion. The inner diameter may be the same as or smaller than the outer dimension, and the entire cylindrical cover may be configured with the dimension of the small diameter portion shown in the above embodiments.

  All the embodiments described above are examples implemented in the depolarization opening device that performs the opening movement by the cam shown in FIG. 1, but the cylindrical cover of each embodiment is adopted in the depolarization opening device provided with the dobby mechanism. Can achieve the same effect.

It is the schematic of the depolarization opening apparatus which implements this invention. It is a partial cross section front view which shows the cylindrical cover of 1st Embodiment. It is explanatory drawing which shows the cylindrical cover mounting | wearing method to a turnbuckle. It is explanatory drawing which shows the cylindrical cover mounting | wearing method to a crimping member. (A) is a partial cross section figure which shows 2nd Embodiment. (B) is a partial cross-sectional view showing a third embodiment. It is a partial cross section figure showing a 4th embodiment. (A) is a partial cross-sectional view showing a fifth embodiment. (B) is a partial cross-sectional view showing a sixth embodiment.

Explanation of symbols

綜 絖 Frame 1
Cam 2
Wire rope 6, 7
Spring 14
Turnbuckle as connection 19
Caulking member 20 as connecting part
Cylindrical cover 21, 27, 33, 39, 50, 55
Open end 23, 24, 29, 35, 44, 52, 57
Small diameter part 25, 26, 30, 36, 46, 53, 58
Large diameter part 22, 28, 34, 42, 43, 51, 56
Half cover 40, 41
Female thread 48
Male thread 49

Claims (2)

In the depolarization opening device of the water jet loom configured to cause the reed frame to perform opening movement by the reed frame drive mechanism disposed on the floor and the spring mechanism disposed above the loom, the reed frame drive mechanism or the spring mechanism A cylindrical cover is attached to a wire rope connecting part having a larger outer diameter than the wire rope between the wire ropes connecting the frame and the frame, and at least the small diameter part on the opening end side of the cylindrical cover is formed of an elastic body. In addition, the inner diameter of the small-diameter portion is formed smaller than the outer dimension of the wire rope, and the large-diameter portion having an inner diameter larger than the small-diameter portion is formed on the center side of the cylindrical cover. It is formed to be larger than the outside dimension of the connecting portion, reluctant to open the water jet loom, characterized in that the wire rope connection portion is housed in a non-contact state inside the large diameter portion Waterproof device in the apparatus. Water according to claim 1, the central portion side of the cylindrical cover is formed of a resin having rigidity, dividing the tubular cover at the central portion, characterized by being detachably mounted in the dividing unit Waterproof device for the negative opening device of the jet loom.

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