JPH0431268Y2 - - Google Patents

Description

[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a rope slippage prevention device in a passive shedding device of a loom.

(Prior art) This is used when assembling a driving force transmission rope to a guide roller in a passive shedding device that moves the heald frame up and down by the cooperation of a spring action and a reciprocating drive device, or when adjusting the height position of a heald frame. This inevitably causes the rope to become loose. Looseness of the rope may lead to the rope coming off from the guide groove of the guide roller.
This hinders the execution of the above-mentioned tasks. Therefore, for example, as illustrated in Japanese Utility Model Publication No. 51-3260,
A pair of brackets are attached to the guide roller shaft so as to sandwich multiple guide rollers, and a rope detachment prevention member is screwed between the tips of both brackets to prevent the rope from detaching from the guide roller. is taken.

(Problem to be solved by the invention) However, as a large amount of fluff is generated and gets between the guide roller and the rope, it is inevitable that the rope will be lifted up from the guide groove of the guide roller, causing the rope to reciprocate at high speed. The rope and the rope detachment prevention member come into contact. In order to avoid early breakage of the rope, which is subject to wear and tear due to this high-speed sliding,
It is desirable to remove the rope-off prevention member when operating the loom, but the work of attaching and removing the rope-off prevention member, which is screwed on, is complicated, so guide rollers are placed below the heald frame where there is no room for the work spacer. With such a configuration of the opening device, it is particularly troublesome to attach and detach the rope detachment prevention member that is screwed.

Structure of the Invention (Means for Solving Problems) Therefore, in the present invention, a rope detachment prevention member is arranged at a rope detachment prevention position near the contact area between the guide roller and the rope, and the rope detachment prevention member is connected to the rope detachment prevention member. A removable fitting relationship using elastic deformation is established between the device and the holding means for holding the device in a position to prevent it from coming off.

(Function) That is, when a rope is loosened, such as when assembling a rope to a guide roller or when adjusting the height position of a heald frame, a rope detachment prevention member is fitted into the holding means and the rope detachment prevention member is inserted into the rope detachment prevention position. The rope detachment prevention member is removed from the holding means during operation of the loom. This prevents the rope from coming off the roller due to rope loosening, and also avoids contact between the rope that is running at high speed during loom operation and the rope-off prevention member.Furthermore, the attachment and detachment of the rope-off prevention member is done using elastic deformation. It's quite easy depending on the relationship.

(Example) Hereinafter, the first and second examples embodying the present invention will be described.
This will be explained based on the diagram.

Jack levers 5 and 6 are rotatably supported by forked brackets 3 and 4 erected on both side frames 1 and 2 of the loom, and are biased to rotate by tension springs 7 and 8. , 6 are connected to the lower ends of the hanging ropes 9, 10, channel-shaped movable attachment bodies 11, 12 are attached to the hanging connecting members 13, 1.
It is latched and suspended via 4. A reciprocating drive mechanism consisting of a cam 15 and a cam lever 16 that rotates in synchronization with the rotation of the machine is installed on one side of the side frame 1, and pull-down ropes 17 and 18 connected to the cam lever 16 are hooked connecting members. 19,
It is connected to the lower ends of the movable mounting bodies 11 and 12 via 20. Therefore, the rotation of the cam 15 is converted to the vertical movement of the movable mounting bodies 11 and 12 via the pull-down ropes 17 and 18, and the vertical movement of the heald frame 23, which is supported between the movable mounting bodies 11 and 12, is guided. body 2
1 and 22.

Support shafts 24, 25, 26, 2 are provided below the heald frame 23.
7 and 28 are arranged in the front and rear direction, and each support shaft 2
4 to 28 have guide rollers 29, 30, 31, 3
2 and 33 are rotatably supported. Each spindle 2
Guide rollers 29 to 33 on the heald frame 2
3, and a pair of front and rear support brackets 3 fixed to the support shaft 24 as shown in FIG.
4 and 35 are arranged in parallel with a spacer 36 interposed therebetween. One of the support brackets 35 is tightened and fixed by a screw 50 along the support shaft 24 so that its mounting position can be adjusted back and forth.

Snap springs 37, 38 formed by bending elastic plates are provided at the ends of both the front and rear support brackets 34, 35.
is fixedly attached, and a rope slip-off prevention rod 39 can be mounted between the two snap springs 37 and 38.

Pull rope 1 down to guide rollers 29-33
7, 18, or when assembling the heald frame 23.
When adjusting the height position of the snap spring 3
7 and 38, fit the rope detachment prevention rod 39. As a result, the gap between the rope detachment prevention rod 39 and the periphery of the guide roller 29 is reduced and the rope 17 is pulled down.
, and the pull-down rod 17 will not come off the guide groove 29a. Therefore, the assembly work and the height position adjustment of the heald frame 23 can be performed smoothly.

When operating the loom, both snap springs 37,
If the rope detachment prevention rod 39 is removed from the guide roller 29 and the pull-down rope 17, even if fluff gets caught between the guide roller 29 and the pull-down rope 17 and the pull-down rope 17 is lifted from the guide groove 29a, the pull-down rope 17 can still travel at high speed. does not come into contact with the rope detachment prevention rod 39. Therefore, wear and tear of the pull-down rope 17 due to such contact does not occur, and premature breakage of the pull-down rope 17 is avoided.

The holding force of the rope detachment prevention rod 39 in the fitted position with respect to the snap springs 37, 38, that is, the rope detachment prevention rod 39, is only the elastic acting force of the snap springs 37, 38, so that the rope detachment prevention rod 39 is held in the rope detachment prevention position only by the elastic acting force of the snap springs 37, 38. The rope detachment prevention rod 39 can be easily attached and removed from the rope detachment prevention position, and the rope detachment prevention rod 39 can be easily attached and removed from the rope detachment prevention position, even in a place where there is little work space below the heald frame 23 as in this embodiment.
9 is easy to attach and detach.

In this embodiment, the length of the rope detachment prevention rod 42 is set according to the maximum number of guide rollers to be used, and by changing the mounting position of the support bracket 35 as shown by the chain line in FIG. It is possible to add a roller 29A.

The present invention is, of course, not limited to the embodiments described above, and the embodiments shown in FIGS. 3 and 4 are also possible. In this embodiment, both support brackets 40,
Fitting holes 40a and 41a are transparently provided at the lower end of the 41 so as to penetrate from the lower end to the front surface, and a fitting hole 40b of the same shape (only the support bracket 40 side is shown) is located in front and back of the fitting holes 40a and 41a. A fitting body 4 is symmetrically provided and fixed to both ends of the rope detachment prevention rod 42.
3 and 44 have a pair of elastic pieces 43a, 43b and 4.
4a (only one side is shown for the fitted body 44)
are integrally formed in substantially the same shape as the fitting holes 40a, 40b, and 41a. Fit the front and rear elastic pieces 43a, 43b of the fitting body 43 into the holes 40a, 40b.
In order to fit the elastic pieces 43a and 43b into each other, it is only necessary to insert the elastic pieces 43a and 43b so that the spacing between the tips of the elastic pieces 43a and 43b matches the opening spacing between the lower ends of the fitting holes 40a and 40b.
Due to the elastic action of 3b, the insert 43 is removably fixed to the support bracket 40. The other fitting body 44 is fitted in the same manner, so that the rope detachment prevention rod 42 approaches the periphery of the guide roller 29 below the diameter of the pull-down rope 17. To remove the fitting bodies 43, 44 from the support brackets 40, 41, use the rope detachment prevention rod 4.
2. Grasp the handle 42a at the bottom and remove the guide roller 29.
It is only necessary to pull it in the radial direction of the rope, and the rope detachment prevention rod 42 can be easily attached and detached by simply resisting the elastic action.

The embodiment shown in FIG. 5 is also possible as a structure in which the rope detachment prevention rod is held at the rope detachment prevention position by a fitting relationship that utilizes elastic deformation. A U-shaped elastic clamp 45 is fixed, and the elastic clamp 45 is supported with the convex portion 45c on the opposing surfaces of the pair of clamp arms 45a and 45b fitted into the recess 46a on the support bracket 46 side. The bracket 46 is elastically clamped.

Effects of the Invention As detailed above, the present invention includes a rope detachment prevention member that can be placed at a rope detachment prevention position near the contact area between the guide roller and the rope, and a rope detachment prevention member that is placed and held at the rope detachment prevention position. Since a removable fitting relationship using elastic deformation is established between the holding means and the holding means to prevent the rope from coming off the roller due to rope loosening, and the rope traveling at high speed when the loom is running, it is possible to avoid contact between the rope and the rope-off prevention member. This has the excellent effect of making it possible to easily attach and detach the rope detachment prevention member while solving the problem.

[Brief explanation of the drawing]

Fig. 1 is a front view of an opening device showing one embodiment embodying the present invention, Fig. 2 is a side view of the main part, and Fig. 3 is a partially cutaway front view of the main part showing the second embodiment. Similarly, FIG. 4 is a side view of the main part, and FIG. 5 is a front view of the main part showing the third embodiment. Pull down rope...17, 18, guide roller...29, 30, 31, 32, 33, guide groove...
...29a, support bracket as holding means...
34, 35, snap springs constituting the rope-off prevention member...37, 38, and rope-off prevention rod...39.

Claims (1)

[Scope of utility model registration request] In a shedding device that uses a guide roller to guide a rope that transmits the driving force of a reciprocating drive device to a heald frame using a spring force, the shedding device is disposed at a position that prevents the rope from coming off near a contact area between the guide roller and the rope. Rope disconnection in a shedding device of a loom in which a removable fitting relationship using elastic deformation is established between a rope disconnection prevention member and a holding means for arranging and holding the rope disconnection prevention member at the rope disconnection prevention position. Prevention device.