JPH0457774B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a spinning machine having a plurality of draft devices arranged in parallel.

<Prior art> As shown in FIG. 3, a draft device in a conventional spinning machine includes a back roller pair 1 consisting of a back bottom roller 1a and a back top roller 1b, a middle bottom roller 3a equipped with aprons 2a and 2b, A spinning machine is constructed by arranging a plurality of draft devices in parallel on a machine stand, including a pair of middle rollers 3 consisting of a middle top roller 3b, and a pair of front rollers 4 consisting of a front bottom roller 4a and a front top roller 4b. There is. Although not shown, each of the bottom rollers is composed of a single line shaft common to all spindles, and the rotation to each roller is transmitted by a belt or chain that connects the main motor and the line shaft of each bottom roller. , by connecting them through a transmission mechanism such as a gear, and sequentially increases the rotational speed of the middle roller pair 3 and the front roller pair 4 relative to the back roller pair 1, thereby increasing the rotational speed of the middle roller pair 3 and the front roller pair 4, thereby increasing the speed of the fibers supplied to the back roller pair 1. It was common practice for the bundle 5 to be drafted to a predetermined thickness while reaching the front roller pair 4.

Therefore, in conventional spinning machines, it is necessary to stop the roller drive, change the draft rate, etc. for each spindle of the spinning machine.
It is completely impossible to change the speed of the rollers, and if yarn breaks at a certain spindle, there is no choice but to stop all spindles of the spinning machine and change the draft rate for all spindles at the same time. Of course, change gears, belt,
This required complicated work such as replacing chains, etc. Furthermore, when the rotation is transmitted from the main motor to the line shaft of each bottom roller, bumps occur due to belts, chains, gears, etc., and this is also a cause of draft unevenness.

〓Problems to be solved by the invention〓 This invention eliminates bumps due to belts, chains, gears, etc. when transmitting rotation from the main motor to the line shaft of each bottom roller, and prevents the occurrence of draft unevenness. Another object of the present invention is to obtain a spinning machine that can easily change the draft rate.

〓Means for solving the problem〓 In the first invention, in a spinning machine including a plurality of draft devices each having a plurality of rows of roller pairs each consisting of a bottom roller and a top roller, A motor control device in which the bottom rollers of each pair of rollers are separately provided, the output shafts of the respective motors are directly connected to the separately provided bottom rollers, and a storage device is provided that can store the rotational speed of each motor in advance. and a control device is actuated by a signal emitted from the storage device to control the rotation of each of the motors, and in the second invention,
In a spinning machine in which a plurality of draft devices each having a plurality of rows of roller pairs each consisting of a bottom roller and a top roller are arranged in parallel, the bottom roller of each roller pair is separately provided for each draft device, and the individually provided bottom rollers are arranged in parallel. Output shafts of separate motors are directly connected to each of the bottom rollers except for the middle bottom roller, and the middle bottom roller is equipped with an apron and directly connected to the output shaft of a motor other than the aforementioned motor. A motor control device equipped with a storage device capable of storing the rotational speed of the motor in advance is provided, and the control device is actuated by a signal emitted from the storage device,
The configuration is such that the rotation of each of the motors is controlled.

〓Operation〓 In the first invention, by directly connecting each bottom roller to the rotating shaft of the motor, the rotation of the motor and the rotation of the rollers are perfectly matched, and the rotation of each roller is memorized in advance. Rotates without crashing at a predetermined draft rate.

In the second invention, each bottom roller except the middle bottom roller is directly connected to the rotating shaft of the motor,
By mounting an apron on the middle bottom roller and directly connecting the output shaft of a motor other than the above-mentioned motor, the rotation of the motor and the rotation of the roller can be perfectly matched, and the rotation of each roller can be stored at a predetermined time. Due to the draft rate of , it rotates without crashing.

〓Example〓 Hereinafter, an example of the present invention will be described with reference to the drawings.

A first embodiment of the spinning machine of the present invention shown in FIG. 1 has a back roller pair 1 consisting of a back bottom roller 1a and a back top roller 1b, and a middle roller equipped with aprons 2a and 2b, similar to the conventional draft device. Bottom roller 3a, middle top roller 3
The draft device consists of a pair of middle rollers 3 consisting of a front bottom roller 4a and a front top roller 4b, and a plurality of rows of the draft device are arranged on a machine stand to constitute a spinning machine equipped with a draft mechanism. There is no difference between this and a conventional spinning machine.

However, in this first embodiment, the back bottom roller 1a of the back roller pair 1 is connected to the output shaft 7 of the motor 6, the middle bottom roller 3b of the middle roller pair 3 is connected to the output shaft 9 of the motor 8, and the front roller pair 4 The front bottom rollers 4b are each directly connected to the output shaft 11 of the motor 10.

Each of the motors is controlled and driven by a control device 12 equipped with a storage device that sets and stores the respective rotational speeds and rotates the motors based on the storage. Therefore, when drafting, the rotational speeds of back roller pair 1, middle roller pair 3, and front roller pair 4 are determined based on various draft rates, and this data is stored in advance in a storage device, and the desired speed is determined during drafting. A constant rotational speed is provided by extracting the memory, sending a signal from the memory to the control device 12 of each motor, and activating the control device 12 to control the rotation of the motor.

In FIG. 1, the motor 6 of the back roller pair 1, the motor 8 of the middle roller pair 3, and the motor 10 of the front roller pair 4 are all connected to each roller.
Although shown as being installed on the same side, when the back roller pair 1, middle roller pair 3, and front roller pair 4 are so close that the motors cannot be placed side by side, the motor 8 is connected directly to the middle roller pair 3. The output shaft 9 of the motor 8 may be extended to shift the position of the motor 8, or the motor 8 may be placed on the opposite side from the other motors 6 and 10 (on the left side in FIG. 1).

Next, the second embodiment shown in FIG. 2 includes 1 pair of back rollers, 3 pairs of middle rollers, and 4 pairs of front rollers.
This relates to an embodiment in which the motors cannot be arranged side by side due to the close distance between them, and the apron 2a mounted on the middle bottom roller 3a is
Middle bottom roller 3a and output shaft 9 of motor 8
The apron 2a is wound and mounted on both sides, and in addition to its original function as an apron, the apron 2a also functions as a driving belt for the middle bottom roller 3a, and the motor 8 is positioned below the motors 6 and 10. It is something that

Other than that, the configuration is the same as that of the first embodiment, and its operation is the same as that of the first embodiment.

〓Effect of the Invention〓 The first aspect of the present invention is that in a spinning machine including a plurality of draft devices each having a plurality of rows of roller pairs each consisting of a bottom roller and a top roller, each draft device has a plurality of roller pairs. A motor control device is provided, in which bottom rollers are provided separately, output shafts of separate motors are directly connected to the separately provided bottom rollers, and a storage device capable of storing the rotational speed of each motor in advance is provided. The control device is actuated by a signal issued from a storage device to control the rotation of each of the motors, and the second invention includes a plurality of draft devices each having a plurality of rows of roller pairs each consisting of a bottom roller and a top roller. In a spinning machine arranged in parallel, the bottom rollers of each pair of rollers are separately provided for each draft device, and each of the separately provided bottom rollers except for the middle bottom roller is provided with an output of a separate motor. A motor control device having a shaft directly connected to the middle bottom roller, an apron mounted on the middle bottom roller, an output shaft of a motor other than the motor being directly connected, and a storage device capable of storing the rotational speed of each motor in advance. The system is configured to control the rotation of each motor by operating the control device in response to a signal emitted from the storage device, so it is possible to drive the rollers for each spindle, which was impossible with conventional spinning machines. It is now possible to stop, change the draft rate, change the speed of the rollers, etc.
As a result, when thread breakage occurs with a certain weight, the draft device of only that weight is stopped and the other weights are driven as usual, and even when changing the draft rate, it is not necessary to belt, chain,
By controlling the memory device, you can easily and accurately change the draft rate without having to do complicated work such as replacing gears. It is also possible to divide into multiple groups, control the draft rate for each group, and drive the spinning machine.As a result, a single spinning machine can independently produce different types of yarn for each group. You can also. When using the spinning machine of the present invention, the rotational speed of the roller of the draft device is reduced only for the weight when splicing the yarn, and the splicing can be performed smoothly.Furthermore, unlike the conventional spinning machine, the main motor This eliminates bumps that occur when rotation is transmitted from the line shaft to the back bottom roller, middle bottom roller, and front bottom roller through transmission mechanisms such as belts, chains, and gears, ensuring reliable rotation at each draft. It is now possible to transmit information to the back crawler, bottom roller, and front roller of the device.
It was possible to prevent the occurrence of draft spots.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first embodiment of a draft device in a spinning machine according to the present invention, and FIG.
FIG. 3 is a perspective view showing a draft device in a conventional spinning machine. 1... Cross crawler, 2a, 2b... Apron, 3... Middle roller, 4... Front roller, 6, 8, 10... Motor, 7, 9, 11...
Output shaft, 12...control device.

Claims (1)

[Scope of Claims] 1. In a yarn spinning machine including a plurality of drafting devices in which a plurality of roller pairs each consisting of a bottom roller and a top roller are arranged in parallel, the bottom roller of each roller pair is separately arranged for each drafting device. A motor control device is provided, in which separate motor output shafts are directly connected to the separately provided bottom rollers, and a motor control device is provided with a storage device capable of storing the rotational speed of each motor in advance, and a motor control device is provided that is equipped with a storage device that can store the rotational speed of each motor in advance, A yarn spinning machine, characterized in that the rotation of each of the motors is controlled by operating a control device. 2. In a yarn spinning machine in which a plurality of draft devices each having a plurality of rows of roller pairs each consisting of a bottom roller and a top roller are arranged in parallel, the bottom roller of each roller pair is separately provided for each draft device, and the bottom roller of each roller pair is separately provided for each draft device. Output shafts of separate motors are directly connected to each of the bottom rollers except for the middle bottom roller, and an apron is mounted on the middle bottom roller, and the output shaft of a motor other than the above motor is directly connected. and a motor control device including a storage device capable of storing the rotational speed of each motor in advance, and the control device is actuated by a signal issued from the storage device to control the rotation of each of the motors. Yarn spinning machine.