JPS6132932Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic yarn cutting and suction device that collects, cuts, and sucks running yarn when an abnormality such as yarn breakage occurs in the spinning process.

Generally, when yarn breaks during spinning, the yarn gets wrapped around a rotating body such as a take-up roller, and if the breakage is delayed, various problems such as damage to mechanical parts can occur. Furthermore, in order to rethread the yarn, it is necessary to perform a troublesome operation such as once stopping the rotating take-off roller, removing the wound yarn, and starting the take-off roller again.

For this purpose, a yarn converging device, an aspirator, and a yarn cutter are arranged upstream of the take-up roller, and these are linked with a yarn breakage detection device to bundle the yarn and operate the yarn cutter at the same time as yarn breakage is detected. An automatic cutting and suction device has been proposed that cuts the yarn and suctions it with an aspirator.

Among such devices, FIG. 1 shows one in which the cutting and suction device is positioned upstream of the oil application device in order to facilitate suction of the yarn. In the figure, a plurality of spun yarns Y are cooled in a spinning tube 1, contacted with an oil application device 2 and applied with an oil agent, and then passed through take-up rollers 3, 3' and wound up on a winder (not shown). If the yarn breaks due to some reason, the take-up roller 3'
The yarn breakage detection device 4 arranged on the downstream side of the yarn detects this and operates the aspirator 5 and yarn cutter 6 placed between the spinning tube 1 and the oil application device 2, and the yarn Y is cut by the yarn cutter 6. At the same time as the aspirator 5
This prevents troubles such as the yarn Y being wrapped around the take-up rollers 3 and 3'.

Conventionally, in these automatic cutting processing devices, when cutting yarn, it is necessary to converge a plurality of yarns, but as a method for this convergence, a tapered guide plate and a method described in JP-A-49-47637 have been used. Tokuko Showa 51-
A combination of a focusing guide and a regulating guide described in 46176 has been proposed.

In the case of these focusing methods, the threads are focused at the center while sliding along the slope of the guide plate (or focusing guide), but the sliding force for focusing the threads is due to the slope of the guide plate (or focusing guide) is generated by the component force in the direction of inclination of the guide plate of the force that moves in the yarn direction and pushes the yarn.

In other words, in the conventional focusing method, it is essential that the guide plate moves in the yarn direction, and in general, the component force in the inclination direction passes over the yarn passing surface of the guide provided above and below the cutting suction device, and the force in the inclination direction is applied to the guide plate. It was necessary to move until the frictional force of the surface became greater. In these conventional focusing methods, when the distance between the ends of multiple threads is short, the guide plate can be tilted greatly, so the component force in the direction of inclination is also large, making it possible to focus.However, recently, equipment rationalization has been Therefore, it is necessary to have multiple spindles for winding a large number of threads at the same time, and as a result, the distance between both ends of the plurality of threads becomes long, making it impossible to collect them using conventional focusing devices. Furthermore, even when the tension of the yarn was low, no sliding force was generated to resist the frictional force of the inclined surface, so that it was not possible to bundle the yarn.

As mentioned above, with the conventional focusing device, it was not possible to collect multiple yarns with long inter-yarn distances or low tension yarns with one focusing device, so it was necessary to install multiple cutting and suction devices. Ta.

The present invention has a function of converging such a large number of yarns into one, and thus, it has become possible to process a large number of yarns, which could not be conventionally converged, with one cutting and suction device.

The present invention will be explained below with reference to the drawings. FIG. 2 is a schematic layout diagram showing an embodiment of the present invention.

In the figure, reference numeral 10 denotes a converging device disposed between the yarn cutter 6 and the oil application device 2, and other symbols are the same as in FIG. 1. Here, the focusing device 10
has the configuration shown in FIG. That is, two focusing plates 1 are attached to an upright shaft 18 protruding from a bracket 17.
1 is rotatably supported. A guide groove 12 is bored in the focusing plate 11 in the longitudinal direction.
2, the fluid pressure cylinder 13 (the bracket 17
A vertically protruding pin 16 is slidably inserted into the tip of a U-shaped rod 15 connected to the plunger 14 of Focusing plate 1
1 is in an open state and when the plunger 14 protrudes, the pin 16 moves forward along the guide groove 12 so that the focusing plates 11 come close and face each other.

In the apparatus having such a configuration, when the yarn breakage detection device 4 detects a yarn breakage, the cylinder 13 is actuated by the signal, and the rod 15 is activated as shown in FIG.
stands out. In this case, since the pin 16 slides along the guide groove 12, the focusing plates 11 rotate around the upright shaft 18, and the focusing plates 11 are brought close to each other and closed as shown by the two-dot chain line in FIG. It becomes a state. Therefore, the plurality of yarns Y running in the front position of the focusing plate 11 which was in the open state before operation are focused at the front position of the upright shaft 18 by the movement of the focusing plate 11. At the same time, the yarn cutter 6 and the aspirator 5 are moved forward by the operation of the fluid pressure cylinder 7, and when the suction port of the aspirator 5 approaches or comes into contact with the bundled yarn Y (two-dot chain line in FIG. 4), the yarn is cut. The device 6 operates, and the yarn Y is cut and sucked into the aspirator 5. Incidentally, it is preferable to arrange a yarn path guide 23 from above below the converging plate 11 to prevent the yarn from swinging or the like. Further, as shown in FIG. 5, thread guides 19 and 20 are provided above and below the cutting and suction devices 5 to 6, and the thread guides 19 and 20 are provided at the same time as the aspirator 5, etc., or instead of the aspirator 5, etc.
9 and 20 may be moved to the aspirator 5 side. In order to reliably cut and suck the bundled yarn Y, it is preferable to bring the yarn Y sufficiently close to or press the aspirator 5 as described above.

The above example has been described in which the converging device 10 is provided below the yarn cutter 6, but the aspirator 5
It may also be provided above, and in this case it is preferable from the standpoint of further improving the focusing performance. Furthermore, aspirator 5
Alternatively, it goes without saying that in addition to the converging device, guides for fixing or introducing the thread (thread path) that move together with the cutter 6 may be provided above and below the cutter 6 and the like.

As explained above, according to the present invention, a single cutting and suction device can simultaneously and reliably suction process a large number of threads, reduce equipment investment, and reduce the space occupied by the equipment.Furthermore, the number of installed aspirators can be reduced. Compressed air consumption can be reduced, which is effective in saving energy.

[Brief explanation of drawings]

Figure 1 is a schematic layout diagram showing a conventional embodiment;
The figure is a schematic layout diagram showing an embodiment of the present invention, Figure 3 is a plan view of the focusing device shown in Figure 2, Figure 4 is an explanatory diagram of the operation, and Figure 5 is a schematic diagram showing another embodiment. . 5... Aspirator, 6... Yarn cutter, 10
... Focusing device, 11, 11'... Focusing plate, 12...
...Guide groove, 13...Fluid pressure cylinder, 15...U
Letter-shaped rod, 16...pin.

Claims (1)

[Scope of utility model registration request] In a device for simultaneously cutting and suctioning a plurality of traveling yarns using a yarn suction device and a cutting device provided below the yarn suction device, the device is arranged below or above the yarn cutting device and facing the traveling path of the group of yarns; A pair of focusing plates are provided which are rotatably mounted around a support shaft disposed parallel to the running path, and a guide groove is carved in the longitudinal direction of the focusing plates, and a running path for the yarn group is provided. A U-shaped rod connected to a driving means for moving forward and backward in the direction is provided, and pins are provided at the tips of the rods so as to protrude orthogonally to each other, and the pins are slidably inserted into the guide grooves of the focusing plate. A yarn cutting and suction device characterized in that a plurality of yarns are bundled by rotating focusing plates to positions facing each other as the rod moves forward.