JPH0431267Y2 - - 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,
Although it is desirable to remove the rope-off prevention member during operation of the loom, the work of attaching and removing the rope-off prevention member, which is screwed, is complicated, and the storage of the removed rope-off prevention member is also troublesome.

Structure of the invention (Means for solving the problem) Therefore, in the present invention, the rope is installed at a rope-off prevention position near the contact area between the guide roller and the rope, and at a retracted position away from the rope running path and the rope-off prevention position. The detachment prevention member can be switched and arranged.

(Function) That is, when assembling the rope to the guide roller or adjusting the height position of the heald frame, when the rope becomes loose, the rope detachment prevention member is installed at the rope detachment prevention position, and when the loom is in operation, the rope detachment prevention member is installed at the rope detachment prevention position. Attach the rope detachment prevention member to the retracted position. This prevents the rope from coming off the roller due to rope loosening, avoids contact between the rope traveling at high speed during operation of the loom, and the rope-off prevention member, and solves the problem of storing the rope-off prevention member.

(Example) Hereinafter, examples 1 to 3 that embody 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.

Below the heald frame 23 are support shafts 24, 25, 26,
27, 28 are arranged in the front-rear direction, and guide rollers 29, 30, 31,
32 and 33 are rotatably supported. The number of guide rollers 29 to 33 on each of the support shafts 24 to 28 is the same as the number of heald frames 23, and as shown in FIG.
4 and 35 are arranged in parallel with a spacer 36 interposed therebetween.

Holders 37 and 38 are rotatably supported at the tips of both the front and rear support brackets 34 and 35 by support pins 40 (only one is shown), and a rope detachment prevention rod 39 is installed between both holders 37 and 38. Supported. Elastic locking pieces 37a, 38a are integrally formed on the tip sides of both holders 37, 38, and the recesses 3 on the support brackets 34, 35 side
4a and 35a. The support brackets 34 and 35 have a positioning part 34b (only one shown) recessed in the vicinity of the support pin 40, and the proximal ends of the holders 37 and 38 abut against the positioning part 34b, as shown in FIGS. It can be regulated and held at the chain line position.

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 support brackets 34 and 35, the elastic locking pieces 3
7a and 38a are fitted, and the holders 37 and 38 are held at the positions shown by solid lines in FIGS. 2 and 3. As a result, the gap between the rope detachment prevention rod 39 and the periphery of the guide roller 29 becomes smaller than the diameter of the pull-down rope 17, and the pull-down rope 17 does not come off from 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, the elastic locking pieces 37a, 38a are released from the recesses 34a, 35a. Then, the holders 37, 38 rotate by their own weight toward the positions shown in chain lines in FIGS.
The base end portions of the support brackets 34 and 35 come into contact with the positioning portions 34b of the support brackets 34 and 35, respectively. As a result, the holder 37,
38 is held by its own weight at the position indicated by the chain line in FIGS. 2 and 3, and the rope detachment prevention rod 39 is separated from the traveling path of the pull-down rope 17 and the rope detachment prevention position indicated by the solid line in FIGS. 2 and 3. In this state, the periphery of the guide roller 29 and the rope detachment prevention rod 39 are sufficiently separated, and the guide roller 29
Even when the pull-down rope 17 is lifted from the guide groove 29a due to fluff entering between the pull-down rope 17 and the pull-down rope 17, the pull-down rope 17 traveling at high speed does not come into contact with the rope-disengagement 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 rope detachment prevention position is determined by the elastic locking pieces 37a, 38.
Since only the elastic acting force a is applied, the switching arrangement between the retracted position, which is spaced in the radial direction of the guide roller 29 from the rope detachment prevention position, and the rope detachment prevention position can be easily performed, as in this embodiment. The holders 37 and 38 can be easily attached and detached even in a place where there is little work space, such as below the heald frame 23. Moreover, the rope detachment prevention member consisting of the holders 37, 38 and the rope detachment prevention rod 39 can be kept attached to the support brackets 34, 35 at all times, and storage problems do not occur.

The present invention is, of course, not limited to the above-mentioned embodiment, and the embodiments shown in FIGS. 4 and 5, for example, are also possible. In this embodiment, one support bracket 4
1, a mounting block 42 is rotatably suspended and supported by a support pin 43, and a rope detachment prevention rod 44 is fixed to the support pin 43. The tip of the rope detachment prevention rod 44 reaches the other support bracket 45, and can be fitted into a substantially U-shaped snap spring 46 attached to the support bracket 45, as shown in FIG. Additionally, as shown in FIG.
A similar snap spring 47 is also attached to the base end of the rope, and the base end of the rope detachment prevention rod 44 can be fitted into the snap spring 47. That is, in FIG. 4, the rope detachment prevention rod 44 is held in the rope detachment prevention position, and in FIG. 5, the rope detachment prevention rod 44 is removed from the state shown in FIG.
It shows the state where it has been rotated 90 degrees and retracted. In this embodiment as well, the switching arrangement between the rope detachment prevention position shown in FIG. 4 and the retracted position shown in FIG. 5 is extremely simple.

In addition to the embodiments described above, embodiments shown in FIGS. 6, 7, and 8 are also possible, and in FIG. 6, double snap springs 49 are fixed to the lower ends of a pair of front and rear support brackets 48 (only one is shown). A rope slip-off prevention rod 50 is sandwiched between both double snap springs 49. Rope release prevention rod 50
can be switched between a pair of upper and lower fitting portions of the double snap spring 49, with the upper fitting portion serving as a rope-removal prevention position and the lower fitting portion serving as a retracted position.

In the embodiment shown in FIG. 7, an eccentric rod 51 is rotatably supported between a pair of front and rear support brackets 52 and 53, and is fastened and fixed by a screw 54. It can be switched between a detachment prevention position and a retracted position shown by a chain line. This switching arrangement can also be easily performed by simply loosening the screw 54.

In the embodiment shown in FIG. 8, the rope detachment prevention rod 55
Elastic clamping pieces 56 fixed to both ends of the support bracket 57 sandwich the support bracket 57, and can be switched between the solid line position and the chain line position.

Effects of the Invention As detailed above, the present invention switches the rope detachment prevention member between the rope detachment prevention position near the contact area between the guide roller and the rope and the retracted position away from the rope running route and the rope detachment prevention position. This is an excellent method that can solve problems such as the rope coming off from the roller due to rope loosening, contact between the rope traveling at high speed during loom operation and the rope detachment prevention member, and storage of the rope detachment prevention member. be effective.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment embodying the present invention; Figure 1 is a front view of the opening device, Figure 2 is a front view of the main part, Figure 3 is a side view of the main part, and Figure 4 is a front view of the opening device. FIG. 5 is a side view of the main parts showing the second embodiment, FIG. 5 is a front view of the main parts, FIG. 6 is a front view of the main parts showing the third embodiment, and FIG. 7 is a front view of the main parts showing the fourth embodiment. FIG. 8 is a front view of the main part showing the fifth embodiment. Pull down rope...17, 18, guide roller...29, 30, 31, 32, 33, guide groove...
...29a, a holder constituting a rope-off prevention member...37, 38, and a rope-off prevention rod...39.

Claims (1)

[Scope of utility model registration request] In a shedding device in which a rope that transmits the driving force of a reciprocating drive device to a heald frame using a spring force is guided by a guide roller, a rope detachment prevention position near a contact area between the guide roller and the rope and a rope running position are provided. A rope detachment prevention device in a shedding device of a loom, wherein a rope detachment prevention member is switchably provided in a path and a retracted position spaced apart from the rope detachment prevention position.