JPS6065128A - Method for detecting abnormal insertion of bobbin in spinning machine - Google Patents

Abstract

PURPOSE:To detect the abnormal insertion of bobbins with certainty, by traveling light, etc. in parallel to the longitudinal direction of a bobbin rail on the side of an inserted bobbin, and turning a bobbin wheel with the inserted bobbin one revolution. CONSTITUTION:Light or ultrasonic waves are made to travel in parallel to the longitudinal direction of a bobbin rail 8 on the side of a bobbin 5 put normally on a bobbin wheel 4, and detecting apparatuses (PH1) and (PH2), e.g. a photoelectric device or ultrasonic sensor, are provided. After putting a bobbin 5 on the bobbin wheel 4, the bobbin wheel 4 is rotated at least one revolution to detect the bobbin 5 put thereon in the titled state with the detecting apparatuses.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for detecting abnormal insertion of a bobbin in a spinning machine.

Prior Art Conventionally, in a roving frame, bobbin insertion after doffing was reliably performed manually, so there was no need to detect abnormality in bobbin insertion. However, due to automation of doffing work and bobbin insertion work, as shown in FIG. In some cases, the bobbin 5 is inserted obliquely. That is, bobbin 5
As shown in FIGS. 2 and 3, a stepped portion 6 is formed at the bottom of the bobbin wheel 4, and a pair of locking pieces 4a protruding from the outer peripheral surface of the upper end of the bobbin wheel 4 slide on the lower edge of the stepped portion 6. A plurality of adjacent pairs of inclined surfaces 7a that can be contacted and fitting grooves 7b that can be engaged with the locking piece 4a are formed, and in some cases, the locking piece 4
There may also be cases where the device is held in an obliquely inserted state with a and the inclined surface 7a in contact with each other. If the bobbin rail 8 is raised to the unwinding position with the bobbin 5 inserted diagonally in this way, the top of the bobbin will come into contact with the lower end of the spindle 10 of the fly V79, causing damage to the bobbin 5 or the flyer 9. In addition, there was a problem that it caused trouble in winding the braided yarn. Therefore, before the bobbin rail 8 rises, the bobbin 5
It is necessary to detect insertion abnormalities.

Purpose This invention has been made in view of the above-mentioned problems, and its purpose is to provide a method for detecting abnormal bobbin insertion in a spinning machine, which can reliably detect abnormal insertion of a bobbin with a simple configuration. be.

Structure of the Invention In order to achieve the above-mentioned object, in the first invention, light and ultrasonic waves are made to travel along the longitudinal direction of the bobbin rail along the side of the bobbin normally inserted onto the bobbin wheel of the bobbin rail. A detection device such as a photoelectric device or an ultrasonic sensor is provided, and after the bobbin is inserted onto the bobbin wheel, the bobbin wheel is rotated at least once, and the bobbin inserted into the bobbin wheel in an inclined state is detected by the detection device. I decided to do so. Further, in the second invention, after the bobbin is inserted onto the bobbin wheel of the bobbin rail, the bobbin rail is raised until the top of the bobbin reaches a predetermined position above the lower end of the spindle that is formed to be retractable, and then the bobbin rail is The wheel is rotated at least once, and the bobbin inserted into the bobbin wheel in an inclined state is exposed to light and ultrasonic waves along the longitudinal direction of the bobbin rail. In order to increase the speed of detection, we installed photoelectric devices, ultrasonic sensors, and other detection devices.

Example 1 The first example in which this invention is embodied in a roving frame will be described below as the fourth example.
．． This will be explained according to Figure 5. This roving frame differs from the conventional roving frame in that it is provided with a separate motor (not shown) for driving the drive shaft 1 independently of the elevating mechanism of the draft part and bobbin rail. The configuration is the same. In addition, as shown in FIG. 4, the roving frame is equipped with a detection device so that the light travels along the longitudinal direction of the bobbin rail 8 on the side of the bobbin that has been correctly inserted onto the bobbin wheel 4 of the bobbin rail 8. Light emitters and receivers PH1 and PH2 of the photoelectric device are provided.

Now, as shown in FIG. 5(d), when the bobbin 5 is inserted with an inclination towards the light beam emitted from the light emitter/receiver PH1, the light beam is blocked by the bobbin 5 and an abnormality in the bobbin is detected. However, if the bobbin 5 is tilted in the opposite direction to the light beam as shown by the solid line in Figure 5, or if it is tilted in the direction parallel to the light beam as shown in Figures 5(a) and (C), the bobbin 5 No.5 insertion abnormality is detected. Therefore, after inserting the bobbin 5 into the bobbin wheel 4, the other motor is driven to rotate the bobbin wheel 4 at least once at a low speed. As a result, bobbin 5 rotates once at low speed with bobbin wheels 4 and 5-, and the tip side of bobbin 5 rotates once at low speed.
Since the bobbin 5 is largely rotated about the same axis as the bobbin 5, the light beams from the light emitter/receiver PH1 and PI-12 are blocked during the rotation, and abnormal insertion of the bobbin 5 is reliably detected.

Although this embodiment has been described with reference to a roving frame, the present invention can also be applied to other types of spinning machines such as spinning frames and twisting machines.

Example 2 Next, an example embodying the second invention will be described with reference to FIGS. 5 to 9. The roving machine in this example has spindle 1
This embodiment differs from the previous embodiment in that the lower end of the 0 is movable, and the other configurations are the same as in the previous embodiment. As shown in FIG.
A housing hole 11 is formed at the lower end of the housing, and a guide pin 13 is inserted into the housing hole 11 and is always urged in the projecting direction by a spring 12.

Now, when detecting a bobbin insertion abnormality in this roving frame, after the bobbin 5 is inserted onto the bobbin wheel 46-, the top of the bobbin 5 is connected to the lower end of the spindle 10, that is, the guide, as shown in FIG. The bobbin rail 8 is raised until it reaches a predetermined position above the pin 13. As a result, the guide pin 13 is inserted into the spindle insertion hole of the bobbin 5 which has been inserted in the normal position. Further, the top of the bobbin 5 inserted into the bobbin wheel 4 in an abnormally inserted state, that is, in a tilted state, comes into contact with the guide pin 13, and the guide pin 13 is pushed up against the force of the spring 12. Next, when the bobbin wheel 4 is rotated once at a low speed, the top of the bobbin 5 is largely rotated as in the case of the previous embodiment, but during this rotation, the guide pin 13 is inserted into the spindle insertion hole of the bobbin 5 or at the flange portion 5a. move outside. Therefore, some of the bobbins 5 with abnormal insertion will be in a normal state during rotation, and the others will be in a state that is more inclined than the normal state. Therefore, since the difference between the normal state and the abnormal state becomes large, the bobbin 5 in the abnormally inserted state is reliably detected by the light emitter/receiver P)-11, PH2. Furthermore, since some of the bobbins 5 with abnormal insertion are corrected to the normal position, the effort to repair the bobbins 5 with abnormal insertion after the abnormal insertion of the bobbin is detected is reduced. Moreover, the bobbin 5, which is normally inserted, can be easily returned to its normal state by pushing up the guide pin 13.

Note that instead of providing the guide pin 13 so that it can be retracted into the accommodation hole 11, the guide pin 13 formed of an elastic member may be provided at the lower end of the spindle 10.

Further, the light projector/receiver pH1, PI-12 may be disposed immovably at a predetermined height position, or may be disposed movably integrally with the bobbin rail 8. Furthermore, an ultrasonic sensor may be provided instead of the photoelectric device as the bobbin detection device.

Furthermore, in each of the above embodiments, only the drive shaft 1 of the bobbin wheel 4 is driven by a separate motor to rotate the bobbin wheel 4, that is, the bobbin 5 at a low speed when an abnormality in bobbin insertion is detected. The bobbin wheel 4 may be rotated by inching the motor.

Effects As detailed above, according to the present invention, abnormal insertion of the bobbin inserted onto the bobbin wheel can be reliably detected with a simple configuration, so that damage to the bobbin or flyer or support for thread winding work can be avoided. It has the excellent effect of never causing

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a conventional roving frame, Fig. 2 is a partially sectional view showing the relationship between the bobbin wheel and the bobbin, Fig. 3 is a bottom view of the bobbin, and Fig. 4 is the first invention. FIG. 5 is a schematic plan view showing the operation; FIG. 6 is a partially cut-away side view of a spinning machine embodying the second invention; FIG. 7 is a lower end of the spindle. A sectional view showing the part,
Figure 8.9 is a side view showing the operation. Bobbin wheel 4, bobbin 5, bobbin rail 8, flyer 9, spindle 10, guide pin 13, light emitter/receiver PH
1, PI-(2゜Patent Applicant: Agent of Tajiki Loom Works Co., Ltd.
Patent Attorney On 1) Hiroshi Nobu 9-

Claims (1)

[Claims] 1. Lighting the side of the bobbin correctly inserted onto the bobbin wheel of the bobbin rail along the longitudinal direction of the bobbin rail,
A detection device such as a photoelectric device or an ultrasonic sensor is provided so that the ultrasonic waves advance, and after inserting the bobbin onto the bobbin wheel 4, the bobbin wheel is rotated at least once, and the bobbin wheel is inserted into the bobbin wheel in an inclined state. A method for detecting abnormal insertion of a bobbin in a spinning machine, comprising detecting a bobbin with the detection device. 2. After inserting the bobbin onto the bobbin wheel of the bobbin rail, raise the bobbin rail until the top of the bobbin reaches a predetermined position above the lower end of the retractable spindle, then rotate the bobbin wheel at least once. The bobbin, which is inserted into the bobbin wheel in an inclined state, is moved by a photoelectric sensor installed so that light and ultrasonic waves travel along the longitudinal direction of the bobbin rail along the side of the bobbin that has been correctly inserted into the bobbin wheel. 1. A method for detecting abnormality in bobbin insertion in a spinning machine, characterized in that detection is performed using a detection device such as a device or an ultrasonic sensor.