JP2000027035A - Opening speed controlling apparatus for opening machine for bale-opened cotton - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely detect the upper face of an opened cotton even if the upper face is in fuzzy state. SOLUTION: An opening mechanism 3 is placed at a side of a traveling table holding a number of opened cotton bales, the opening mechanism 3 is provided with a spike roller 10 for opening, the opened cotton is scraped off with the spike roller 10 while moving the traveling table or the opening mechanism 3 and slowly lowering the spike roller 10 of the opening mechanism 3 and the opened cotton is transferred to the subsequent step by a carrier air flow. In an opening machine having the above construction, the opening mechanism 3 is provided with a sensor 32 attached parallel to the spike roller 10 and a swing detector 33 to detect the swing of the sensor 32 and the lowering speed of the opening mechanism 3 is restricted to a prescribed level when the sensor 32 reaches the opened cotton on the table by the lowering of the opening mechanism 3 and the pressure on the cotton reaches a prescribed level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for regulating the opening speed of a opened bale opener for sequentially scraping a large number of opened bale in a spinning mill and supplying the opened bale to the next process.

[0002]

2. Description of the Related Art FIGS. 6 and 7 show an example of the above-described open-fiber bale opener. The opening device 1 uses a rotary table 2 as a table on which the opened bale A is placed, and shows an opening device in which opening operation is performed by an opening mechanism 3 provided on one side thereof. Reference numeral 4 denotes a motor for driving the rotary table 2.

The opening mechanism 3 includes a fixed support frame 5 established on one side of the turntable 2 and an elevating frame 6 supported at one end of the support frame 5 and extending toward the center of the turntable 2. The elevating frame 6 rotatably mounts a fiber opening spike roller 10 at a lower end thereof, and accommodates a suction hood 11 that covers an upper portion of the spike roller 10. Numeral 12 denotes a spike blade, which is circumferentially attached to the rotary roller body at intervals and has a holding bar 13 between the blades. 14 is a spike roller 10
Drive motor. The upper end of the suction hood 11 is connected to a flexible duct 15 and is connected to a next-step cotton mixing machine (not shown) via suction means.

The fixed support frame 5 includes an elevating mechanism 20 for the elevating frame 6. The lifting mechanism 20 includes a vertical screw shaft 22 that is screwed into a screw tube 21 mounted on the base end of the lifting frame 6, and a guide roller 23 that is mounted at a distance above and below both ends of one side of the lifting frame 6. And a guide rail 24 for guiding the
Reference numeral 25 denotes a motor for driving the screw shaft 22, which is mounted with an inverter or the like (not shown) so as to be capable of shifting.

In the above configuration, a large number of open bale cotton wools A are placed on the rotary table 2 and rotated, and the lifting frame 6 is manually lowered to reach the open bale raw wool A as far as possible. When the raw cotton arrives, the operation is switched to the automatic operation, and the fiber descends at a predetermined opening speed and opens.

[0006]

In order to determine whether or not the spike roller 10 of the elevating frame 6 has reached the upper surface of the raw cotton, a visual or electrical determination mechanism is usually used. A photoelectric tube or the like is usually used as the electrical discrimination mechanism. However, since the individual dimensions of the opened raw cotton are different and the upper surface of the raw cotton is fluffy, it is difficult to determine the difference. In view of the above, it is an object of the first invention to reliably determine the upper surface of an open bale even if the upper surface is fluffy. Further, in the second invention, the opening of the bale is advanced in the upper part, and the bale is insufficient and the density tends to be large due to the load of the raw wool itself toward the lower part.
Therefore, when the descending speed of the lifting frame 6 is constant, the opening of the open bale cotton is sufficiently performed, but the opening is insufficient as the lower part of the bale is opened, causing problems such as uneven spots. There is. A second aspect of the present invention aims to prevent the occurrence of unevenness in the opening by adjusting the lowering speed of the lifting frame, that is, the spike roller, even when the density of the opened bale cotton has a difference. .

[0007]

According to a first aspect of the present invention, there is provided an opening speed regulating device for an open-spread raw cotton opener for achieving the above object. The opening mechanism is equipped with a spike roller for opening the fiber, the traveling table or the opening mechanism is run, and the spike roller of the opening mechanism is gradually lowered. In the spreader for transferring to the next process by a carrier airflow, the spreader mechanism includes a sensor mounted in parallel with the spike roller, and a swing detection mechanism for detecting a swing of the sensor, and When the sensor reaches the open bale on the table and reaches a predetermined pressure on the wool, the descent speed of the opening mechanism is regulated to a predetermined speed.

In the present invention having the above structure, the opening detection mechanism is lowered at a high speed, and when the sensor reaches the open bale cotton and the sensor reaches a predetermined pressure against the wool, the swing detection mechanism is activated. A signal is issued to regulate the descent speed of the opening mechanism to a predetermined opening speed, and the fiber is lowered during opening. Therefore, even if the upper surface of the raw cotton is fluffed, the upper surface can be reliably detected without being affected by the fluff.

According to a second aspect of the present invention, the swing detecting mechanism of the sensor includes a cotton density detecting means for detecting a cotton density from a change in the swing angle of the sensor due to a density of the opened cotton bale. It is characterized in that the descending speed of the opening mechanism is regulated according to the change in the density of the raw cotton.

According to the present invention having the above-described structure, the swing angle of the sensor varies depending on the density of the opened raw cotton. This is detected by the cotton density detecting means, and a signal corresponding to the density is issued,
By regulating the descent speed of the opening mechanism based on this, the density of the opened fibers is supplied to the next step as uniform.

[0011]

1 to 4 show a first embodiment of the present invention. The open fiber bale opener 1 uses a rotary table 2 as a table on which the open bale raw cotton similar to the example shown in FIG. 6 is placed, and a fixed support frame 5 established on one side thereof and a support frame 5 thereof. An example in which the present invention is applied to a fiber opening machine 1 having an elevating frame 6 which is supported at one end and extends in the center direction of the rotary table 2 is shown. .

According to the present invention, in the opening device 1, when the opening mechanism 3 is lowered, it is detected that the spike roller 10 has reached the raw cotton on the table, and the opening speed, that is, the descent speed of the spike roller 10, is reduced. Opening speed regulating device 30 for regulating
Is provided. The restricting device 30 includes a swingable sensor 3 around a support shaft 31 mounted in parallel with the spike roller 10.
2 and a swing detection mechanism 33 attached to one end of the support shaft 31 for detecting the swing of the sensor. The sensor 32 has a flat cross section, and the support shaft 31 penetrates one side thereof. Further, the swing detection mechanism 33 has a proximity switch 35 opposed to a swing bar 34 attached to the support shaft 31, and the swing bar 34 is normally drawn downward by a spring 36 and abuts on a receiving base 37. , And is held opposite to the proximity switch 35. However, in this position, the sensor 32 attached to the support shaft 31 is held at the solid line position lowered in FIGS.

In the above arrangement, when opening the opened bale on the table, the rotating table 2 is rotated and the opening mechanism 3 is lowered at a predetermined lowering speed. At this time, the free end of the sensor 32 hangs downward due to its own weight and the spring 36. When the sensor 32 reaches the raw cotton A, the sensor 32 rotates around the support shaft 31. At this time, the upper surface of the raw cotton is not at a constant height and is fluffy. However, when the pressing force applied to the sensor 32 exceeds the pressing force of the spring 36, that is, exceeds the set pressure of the spring 36, the swing bar 34 attached to the support shaft 31 is separated from the proximity switch 35, and the switch is Emits a signal. Therefore, by appropriately setting the spring pressure, the scraping start position can be set without being affected by fluffing on the upper surface of the raw cotton. The pressing force applied to the sensor 32 may be an elastic rubber, an air damper or a hydraulic damper other than a spring.

The signal of the proximity switch 35 is applied to a control mechanism CPU, which reduces the rotation speed of the lowering motor 25 of the fiber opening mechanism 3 to a predetermined fiber opening speed, and raises and lowers the frame 6.
That is, the spike roller 10 is decelerated to a predetermined opening speed, and the drive motor of the spike roller 10 is simultaneously driven (or descends in a pre-driven state) to start the opening operation.

Next, FIG. 5 shows another example of the opening speed regulating device 30 described above. This regulating device 40 uses a differential transformer 41 as a cotton density detecting means for detecting cotton density instead of the proximity switch 35. Reference numeral 42 denotes a connecting rod that connects the swing bar 34 and the differential transformer 41. As is well known, the differential transformer includes two output coils that output in opposite directions. When the movable iron core is at the center, the voltages of both output coils are canceled out, but when the movable iron core is located below,
For example, when a negative phase AC voltage is shifted upward, a positive phase AC voltage is generated.

Originally, the degree of opening of raw cotton is not constant, but the degree of opening is higher in the upper part, and lower in the lower part due to pressurization by its own weight, and the degree of opening is not constant, such as high cotton density. Alternatively, the cotton density varies depending on the type of raw cotton. According to the present invention, the difference in the swing angle of the sensor due to the difference in the cotton density is detected by the differential transformer 41, and the lowering speed of the fiber opening mechanism 3 is adjusted according to the cotton density. Accordingly, when the movable iron core of the differential transformer is located at the center, the lifting frame 6 of the opening mechanism 3, that is, the spike roller 10 is lowered at the set standard opening speed, but the cotton density is lower than that. Thus, when the free end of the sensor 32 is lowered, the lifting frame 6
When the cotton density increases, the sensor 3
When the free end of 2 rises, the descending speed of the lift frame 6 is reduced. The increase or decrease of these speeds is determined by calculation by the control unit CPU and applied to the drive motor 25.

Although the above embodiment has been described with respect to the fiber opening device for placing the opened bale on a rotary table, the opening device is moved along a straight rail to remove the opened bale. The present invention can be similarly applied to the fiber opening mechanism for a fiber opening device that is arranged on the side or both sides and opens.

[0018]

As described above, according to the present invention, the opening device is provided with a speed regulating device in the opening mechanism of the raw cotton, and when the opening mechanism is lowered, the sensor of the regulating device reaches the raw cotton, and the sensor is controlled by the sensor. When the received pressure reaches a predetermined pressure, the opening speed of the opening mechanism, that is, the descending speed of the spike roller is regulated at the predetermined opening speed. No malfunction due to According to the second aspect of the present invention, since the detecting means for detecting a change in the rotation angle of the sensor due to the density of the opened bale is provided, the descent speed of the opening mechanism is regulated according to the rotation angle. Even if the density differs depending on the location of the opened raw cotton, the descent speed of the spike roller is adjusted accordingly, so that the density of the opened fiber can be supplied to the next step as substantially uniform. .

[Brief description of the drawings]

FIG. 1 is an overall explanatory view of an open bale raw cotton opening machine to which the present invention is applied.

FIG. 2 is an overall explanatory view of the opening speed regulating device of the present invention in FIG. 1;

FIG. 3 is a cross-sectional view taken along line XX in FIG.

FIG. 4 is an explanatory diagram of a swing detection mechanism.

FIG. 5 is an explanatory view of a second embodiment of the raw cotton detecting means.

FIG. 6 is an explanatory view of all units of a conventional fiber opening device.

FIG. 7 is a sectional view taken along line YY in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening bale opening device 3 Spreading mechanism 10 Spike roller 30 Spreading speed regulating device 32 Sensor 33 Swing detection mechanism 40 Spreading speed regulating device 41 Cotton density detecting means

Claims (2)

[Claims] An opening mechanism is provided on one side of a traveling table on which a large number of open bale cotton is loaded. The opening mechanism is provided with a spike roller for opening, and the traveling table or the opening mechanism travels to open. The spike roller of the fiber mechanism is gradually lowered, and the open fiber cotton is scraped by the spike roller and transported to the next process by the conveying airflow. And a swing detection mechanism for detecting the swing of the sensor. When the sensor reaches the opened bale on the table by the descent of the opening mechanism and reaches a predetermined pressure on the wool, the opening mechanism is lowered. An opening speed regulating device for an open bale raw cotton opening machine, wherein the speed is regulated to a predetermined speed. 2. A swing detection mechanism for a sensor, comprising: a cotton density detecting means for detecting a cotton density from a change in a swing angle of the sensor due to a density of the opened raw cotton. 2. The opening speed regulating device in the open bale opener according to claim 1, wherein the lowering speed of the opening mechanism is regulated accordingly.