JPH0512315Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an improvement of a push-up type warp shedding device for a loom.

Prior Art This type of push-up type warp shedding device has a shedding lever attached to each end of a plurality of shedding shafts, as shown in FIGS. The levers are installed offset in the longitudinal direction of the opening shaft, and the tip of each opening lever is pushed up and connected to the corresponding opening frame with a rod.

The number of opening shafts is equal to the number of cycles of the textile structure. Therefore, according to such a connection structure, in a textile structure with a large number of cycles, the connection position of the push-up rod to the opening frame is away from the vertical frame that constitutes the opening frame, and is located at the center of the lower beam of the opening frame. approaching the department. Therefore, the driving force for the opening movement of the opening frame acts near the center of the lower beam of the opening frame. As a result, the lower beam of the opening frame is susceptible to deflection and vibration due to insufficient strength. As the number of cycles of the textile structure increases, the deflections and vibrations of the shedding frame cannot be ignored, thereby also limiting the speed of shedding movement.

Purpose of the invention The purpose of the invention is to position the connection position of the shedding frame and the push-up rod as close to the end of the shedding frame in the weaving width direction as possible to prevent deflection and vibration of the shedding frame during shedding movement. The aim is to prevent this from occurring and enable high-speed movement.

Solution to the invention In view of the above object, the present invention fixes two or more opening levers at the same position in the longitudinal direction of a plurality of opening shafts, and connects each opening lever and the corresponding opening frame with a push-up rod. , a relief part is formed in at least one of the push-up rod of the lower opening lever or the upper opening lever, and the upper opening lever and the lower push-up rod intersect in a non-interfering state at the part of the relief part. That's what I do.

In this way, at least two or more opening levers can be placed at the same position in the weaving width direction, so
The connection position between the push-up rod and the corresponding opening frame is as follows.
Compared to the conventional method, the setting can be concentrated in a narrow range in the weaving width direction at the end of the opening frame.

Structure of the invention FIGS. 1 and 2 show only one end of the push-up type warp shedding device 1 of the invention.

This push-up type warp shedding device 1 includes a plurality of e.g.
Five opening levers 40, 41...44 are provided at each end of the five opening shafts 30, 31...34 to drive the ten opening frames 20, 21...29.
It is equipped with Five opening shafts 30, 31...
...34 are arranged above and below in the horizontal direction parallel to the opening frames 20, 21...29, and support the opening levers 40, 41...44, respectively. According to this embodiment, the opening levers 40, 41, 42 are
They are attached to the opening shafts 30, 31, and 32 in a shifted manner, respectively, and the remaining opening levers 43, 44 integrally form a relief part 5 by a long hole from the base end portion to the distal end portion, The opening lever 4 is connected to the opening shafts 33 and 34.
It is fixed above the same position as 0 and 41.

And each opening frame 20, 21...29
The lower part of the opening levers 40, 41...44 are connected to the tips of the opening levers 40, 41...44 in pairs by push-up rods 60, 61...69, joints 7, 8, and connecting pins 9, 10, respectively. Connected in a rotatable manner. These push rods 6
0, 61...69, the four push-up rods 62, 63, 67, 68 are the upper opening lever 4.
The opening frames 22, 2 pass through the relief portions 5 of 3, 44 and intersect with them without interfering with them.
3, 27, and 28.

In this way, two push-up rods 60, 61...69 are connected to each opening lever 40, 41...44, and push-up rods 60, 62, 65, 67 and push-up rods 61, 63, 66 and 68 overlap each other at the same position in the weaving width direction, so the pitch in the weaving width direction required to connect the 10 push-up rods 60, 61...69 is equal to the pitch of the three push-up rods 6.
The width required for connecting 2, 63, and 64 is sufficient. As a result, all opening frames 20, 21...2
9 is connected to the extent necessary to connect the three push-up rods 62, 63, and 64. As mentioned above, although FIGS. 1 and 2 only show the connection at one end of the opening frames 20, 21...29, the other end is also connected in a symmetrical state. be done.

Effect of the invention The shedding shafts 30, 31...34 are driven by a drive mechanism (not shown) in synchronization with other movements of the loom, and cause the shedding levers 40, 41...44 to swing in a predetermined order. By applying this force, the push-up rods 60, 61...69 are driven in the vertical direction, and the opening frames 20, 21...29 are given reciprocating motion in the vertical direction. In this way, the opening frames 20, 2
1...29 drives healds (not shown) to give the warp threads (not shown) the shedding movement necessary for the woven structure.

At this time, the connecting positions of the opening frames 20, 21...29 and the push-up rods 60, 61...69 are close to the vertical frames constituting the opening frames 20, 21...29 in the longitudinal direction, that is, in the weaving width direction. Therefore, all the opening frames 20, 21...29 do not bend at the connecting portions when receiving the force acting in the vertical direction from the push-up rods 60, 61...69, and do not cause vibrations in the vertical direction. Repeat the reciprocating motion.
Of course, even during such movements, the opening lever 4
0,41...44 and push-up rod 60,6
1...69 do not interfere with each other.

Other Embodiments of the Invention In the above-mentioned embodiment, as the most preferable example, a relief portion 5 formed by a long hole is formed in the opening levers 43 and 44. , the push-up rods 62, 67 may be formed as elongated holes in the longitudinal direction, or, as shown in FIG. It is also possible to configure a shape that does not interfere with each other.

Effects of the invention In this invention, the lifting rod of the lower opening lever and the upper opening lever intersect at the same position without interfering with each other due to the relief part, and the connecting part between the opening frame and the lifting rod is woven. Since it can be set in a narrow range in the width direction, the support positions of multiple opening frames are as close as possible to the vertical frames that make up the opening frame, which prevents deflection due to insufficient strength of the opening frame and vibration when it moves up and down. etc. can be prevented,
As a result, high-speed opening movement becomes possible. Also,
Since a large number of push-up rods can be centrally arranged in the left and right spaces, the positional relationships of other mechanisms are not restricted by the presence of these push-up rods, and the driving portion can be accommodated better.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a push-up type warp shedding device of the present invention, FIG. 2 is a side view of the same device, and FIGS. 3 and 4 are front views of main parts of other embodiments. 1... Push-up type warp shedding device, 20, 21...
...29...Opening frame, 30,31...34...Opening shaft, 40,41...44...Opening lever,
5...Escape part, 60, 61...69...Pushing rod.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of opening shafts are arranged one above the other in a direction parallel to the plurality of opening frames, an opening lever is fixed to each end on both sides of each opening shaft, and each opening lever and In a push-up warp shedding device that connects a corresponding shedding frame with a push-up rod, two or more shedding levers are fixed at the same position in the longitudinal direction of the shedding shaft, and the push-up rod of the lower shedding lever and the push-up rod of the upper shedding lever are fixed at the same position in the longitudinal direction of the shedding shaft. A relief part is formed in at least one of the opening levers, and the push-up rod of the lower opening lever and the upper opening lever intersect with each other in a non-interfering state by the relief part, and the push-up rod of each opening lever is the same for each opening frame. A push-up type warp shedding device characterized by being connected to a certain position. (2) The push-up type warp shedding device according to claim 1, wherein the relief portion is formed as a long hole in the upper shedding lever.