JPS636227Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a thread breakage detection device for a heddle frame.

(Prior Art) A dropper has been used as a means for detecting thread breakage in a heald frame, but as the shedding motion of the heald frame becomes faster, the dropper has a drawback that it is difficult to achieve the purpose.

(Problem to be Solved by the Invention) The inventor of the present invention found that during opening movement, the relationship between the heald bar and the heald is such that when ascending, the heald contacts the top surface of the heald bar, and when descending, the heald contacts the top surface of the heald bar due to the tension of the thread. Focusing on the fact that the healds do not touch each other, if the yarn breaks during descent, the healds will come into contact with the heald bars.
By detecting this, thread breakage can be detected.

It is an object of the present invention to provide a thread breakage detection device for a heald frame that can easily and reliably detect thread breaks by utilizing the properties of the shedding motion.

[Structure of the invention] (Means for solving the problem) The thread breakage detection device for the heald frame in the present invention is formed on one end edge of the inner end surface of the lower cross beam that is suspended horizontally on the side stay of the heald frame. A plurality of synthetic resin holders are fixed to the inside of the side wall at predetermined intervals so as to be located below the locking part of the heald that is locked to the heald bar fixed to the inside of the side wall. An opening is provided at the upper end of the gripping portion, and a detection rod installed parallel to the heald bar is held within the gripping portion with its upper surface exposed.

(Function) In the present invention, when the warp threads of the heddle located above the grip part 1 of the holder break when the holder is lowered, the tension of the threads that was acting to lift the heddle upward is lost. , the locking part of the heald lowers due to its own weight. Then, the lower end of the locking portion will sit on the upper surface of the detection rod exposed at the opening of the gripping portion of the holder. Therefore, thread breakage can be detected by passing current through the detection rod only during the descent.

(Example) Hereinafter, the present invention will be specifically described based on an example shown in the drawings.

FIG. 1 is a front view of a thread breakage detection device for a heald frame showing one embodiment of the present invention, and FIG. 2 is a right side view thereof.

In the figure, 1 is the grip part, 2 is the holder body,
The grip portion 1 and the holder main body 2 are integrally molded from synthetic resin, and constitute the holder H of the present invention. Reference numeral 3 denotes an opening formed by cutting out the upper end 5 of the gripping part 1, which is shaped like an annular ring, by an expanded width of 90° passing through the center of the annular ring. When the detection rod 4, which is smaller than the diameter of the rod 4, is pushed into the opening 3 of the grip part 1, the opening 3 of the grip part 1 made of synthetic resin expands, and the detection rod 4 is inserted into the approximately annular grip part 1. When the detection rod 4 is inserted and held, and the detection rod 4 is pulled up, the opening 3 expands and the detection rod 4
can be removed from inside the grip part 1. Next, reference numeral 6 denotes a long hole for screwing, which is provided through the holder body 2 on the left and right sides of the rib 7 with the rib 7 connecting the holding part 1 and the holder body 2 sandwiched therebetween. Detection rod 4 held in part 1
The hole shape is perpendicular to the longitudinal direction of the heald, that is, the hole is elongated in the longitudinal direction of the heald.

Figure 3 shows the holder H of the present invention having the above configuration.
Fig. 4 is a partial front view showing the state in which the detection rod is attached to the heald frame using the
FIG. 3 is a cross-sectional view taken along a line.

In the figure, reference numeral 8 denotes a lower cross beam that is suspended horizontally on the side stays of the heald frame, and is formed by drawing aluminum material, and a hollow portion 9 is provided inside to reduce weight. Reference numeral 10 denotes an inner end surface that the horizontal beams 8 that are horizontally suspended in parallel face each other, and one end edge (right side in FIG. 4) of the inner end surface 10 has a side extending in the direction of the inner end surface 10 (not shown) of the opposing cross beam 8. A wall surface 11 is provided. Reference numeral 12 denotes a protrusion formed along the longitudinal direction of the cross beam 8 on the inside of the side wall surface 11, and a belt-shaped heald bar 13 is abutted and fixed on the end face of the protrusion. 14 is a heald having a warp hole 15 in the center, and the heald 14 has C at each end.
It has a letter-shaped locking portion 16, which is loosely fitted onto the heald bar 13 as shown in FIG. 4, and is locked so as to be slidable along the heald bar 13. Reference numeral 17 denotes a center stay that is attached to the approximately central portion of the cross beam 8 in the longitudinal direction.
It is attached to the inner end surface 10 of.

By the way, the holder H of the present invention has a holder main body 2.
is brought into contact with the inside of a side wall surface 11 provided on the cross beam 8 and fixed by a set screw 20 screwed into the elongated hole 6. Reference numeral 4 denotes a detection rod held in the grip part 1 of the holder H fixed to the inside of the side wall surface 11 of the cross beam 8;
When the heald frame is operating normally, pass the warp threads through the warp holes 15 of the heald 14 directly below the locking part 16 of the heald 14, which is locked to the heald 14. The lower end of the locking part 16 of 14 is held parallel to the heald bar 13 so as not to contact the detection rod 4. Note that since the opening 3 is provided in the upper end 5 of the grip part 1 of the holder H, the upper surface of the detection rod 4 held in the grip part 1 is
It is held in an exposed state in the opening 3.

Therefore, if the warp threads of the heald 14 located above the gripping part 1 of the holder H break when descending, the tension of the threads that was acting to lift the heald 14 upward is lost, and the heald 14 Due to its own weight, the locking portion 16 of the heald 14 locks into the heald bar 1.
It will be lowered by the amount of free fitting width in the vertical direction that is locked in 3. Then, the lower end of the locking part 16 of the heald 14 will be seated on the upper surface of the detection rod 4 exposed in the opening 3 of the grip part 1 of the holder H. Therefore, yarn breakage can be detected by applying current to the detection rod 4 only during the downward movement. Similarly, yarn breaks in other healds 14 can be detected electrically and reliably via the detection rod 4 while the heald frame is in operation.

Also, when attaching the detection rod 4 to the heald frame,
The detection rod 4 is connected to the long hole 6 provided in the holder body 2.
It is possible to adjust the horizontality of the heald 14 and the predetermined distance S from the lower end of the locking part 16 of the heald 14, so even if there are dimensional errors or assembly errors in the heald frame, the detection rod can be moved to the optimal position accordingly. 4 can be installed. Furthermore, since the holder H is made of synthetic resin, the detection rod 4 can be inserted into or removed from the grip 1 through the opening 3 of the grip 1, making it extremely easy to replace the detection rod 4. Therefore, it can be done for a short time.

In the embodiment described above, long holes for screwing are provided in the longitudinal direction, but this is for adjusting the mounting position, and if this is ignored, a round hole would suffice.

In this embodiment, the inside of the gripping part 1 of the holder H is approximately annular, but its shape and dimensions can be arbitrarily changed depending on the cross-sectional shape and dimensions of the detection rod 4 to be held.

Furthermore, since the center stay 17 is attached to the inner end surface 10 of the cross beam 8, the detection rod 4 held in the grip part 1 of the holder H is positioned so that it does not come into contact with the center stay 17. Needless to say, this is taken into consideration.

[Effects of the invention] As specifically explained above, in the present invention, the detection rod is provided below and parallel to the heald bar, so when thread breakage occurs, the heald lands on the detection rod. Therefore, yarn breakage can be reliably detected by passing current during the descent.

In addition, the holder is made of synthetic resin and has an opening at the upper end of the grip to expose the upper surface of the detection rod held within the grip, so there is no possibility of thread breakage in the heald located above the grip of the holder. It has many advantages, such as being able to detect thread breakage as reliably as other heald thread breaks, allowing the detection rod to be replaced in a short time, and having a simple structure that can be manufactured at low cost. It is possible to provide a thread breakage detecting rod holder for a heald frame that is far superior in functionality and extremely convenient in practice.

[Brief explanation of drawings]

Fig. 1 is a front view of a detection rod holder used in a heald frame thread breakage detection device showing one embodiment of the present invention, Fig. 2 is a right side view thereof, and Fig. 3 is a detection rod holder using the holder of the present invention. FIG. 4 is a sectional view taken along the line A--A in FIG. 3. FIG. DESCRIPTION OF SYMBOLS 1... Gripping part, 2... Holder main body, 3... Opening, 4... Detection rod, 5... Upper end part, 6... Long hole,
7...Rib, 8...Horizontal beam, 9...Hollow part, 10...
...Inner end surface, 11...Side wall surface, 12...Protrusion, 1
3... Heald bar, 14... Heald, 15... Warp hole, 16... Locking part, 17... Center stay, 18... Leg part, 19... Set screw, 20... Set screw.

Claims (1)

[Scope of utility model registration request] A predetermined position is placed below the locking part of the heddle that is locked to the heald bar fixed to the inside of the side wall surface formed at one end edge of the inner end surface of the lower cross beam that is suspended horizontally on the side stay of the heald frame. Multiple synthetic resin holders are fixed at intervals inside the side wall surface, and an opening is provided at the upper end of the grip of the holder to expose the top surface of the detection rod, which is installed parallel to the heald bar, inside the grip. A thread breakage detection device for a heald frame, characterized in that the heald frame is held so as to