JPH0797724A - Rotary flat driving device for card - Google Patents

Abstract

PURPOSE:To prevent a rotary flat from starting in a suspended state of a cylinder in starting the cylinder in a card for driving the cylinder and the rotary flat by different motors. CONSTITUTION:A revolution detector 14 for discovering revolving speed of a cylinder is connected to a cylinder driving system 15 and a control device 20 is equipped with a setting device 21 for setting a revolving speed of the cylinder in starting and stopping of a rotary flat. When a signal set in the setting device 21 from the revolution detector 14 reaches a revolving speed of the cylinder set in the setting device during starting and accelerating the cylinder, a signal to start a flat driving motor M is outputted from the control device 20. Consequently, the rotary flat 9 is started after revolution of the cylinder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary flat drive device for cards.

[0002]

2. Description of the Related Art There is a conventional card in which the flat drive is separated from the main motor of the cylinder drive system and only the flat drive system is independently driven. In this way, when the flat drive is performed by a single drive motor, the flat drive is configured such that the flat drive motor power source is energized at the same time when the cylinder is activated.

[0003]

With the conventional main motor and flat drive motor separated from each other, when the cylinder does not rotate for some reason when the machine is started, for example, the belt of the cylinder drive system comes off. Even when the flat drive motor drives the flat independently, the cotton that collects between the flat and the cylinder gets into the flat needle when the cylinder is started next time when the flat is driven. There was a problem that I couldn't drive. In this invention, the main motor and the drive motor for the flat are separately provided, so that the flat does not start when the cylinder is not rotating, thereby eliminating the trouble that cotton is caught between the flat and the cylinder. It is to obtain a flat drive device that smoothly starts up the machine base.

[0004]

In order to solve the above-mentioned problems, according to the present invention, a drive motor for driving a rotary flat drive system separately from a main motor of a cylinder drive system is independently driven,
In a card rotation flat drive device that runs a rotation flat along the top of the cylinder, a rotation detector that detects the cylinder rotation speed is connected to the cylinder drive system, and a setting device that sets the cylinder rotation speed for starting the rotation flat is provided. A control device for activating the flat drive motor when the signal from the rotation detector reaches the cylinder rotation speed set in the setting device while activating and accelerating the cylinder is provided.

[0005]

When the signal from the rotation detector reaches the rotation speed for activating the rotation flat set in the setting device while the cylinder rotation speed at cylinder startup is increasing, the flat drive motor is activated to rotate the rotation flat. Therefore, the rotary flat is driven after the cylinder starts to rotate, and it does not rotate when the cylinder does not rotate due to trouble during start-up acceleration, so the cotton that has accumulated between the cylinder and the cylinder will bite into the needle of the rotary flat at the next cylinder startup. Can be prevented and the machine base can be started up smoothly.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 1 is a cylinder, 2 is a doffer, and 3 is a take-in roller, which are rotatably supported on a frame (not shown). A flat device 4 is provided above the cylinder 1. In the flat device 4, a flat drive shaft 5 is rotatably supported on an upper portion of a flexible bend (not shown) fixed on the frame. Flat drive sprockets 6 are wedged at both ends of the flat drive shaft 5 in the machine width direction. A large number of rotary flats 9 are connected endlessly by connecting both ends of the machine flat width direction to flat chains 8 on the left and right sides of the machine base width direction, respectively, and the endless rotary flats 9 are directly wound around the chain sprocket 6. is there. Reference numeral 7 is a circular ring that guides an endless rotating flat 9. Therefore, when the chain sprocket 6 is rotated, a large number of rotating flats 9 run in the direction of the arrow in the drawing along the guide surface of the upper portion of the flexible bend in the upper portion of the cylinder 1 and between the cylinder 1 and the take-in roller. It is designed to remove foreign matters, nep, leaf scum, and the like in the fiber supplied via 3 and perform a fiber-opening action to comb the fiber in a certain direction.

The cylinder shaft 10 of the cylinder 1 has a gear,
Alternatively, a cylinder drive system 15 composed of a belt transmission system or the like is connected to the cylinder drive system 15, and a constant speed main motor MM is connected to the cylinder drive system 15. A rotation detector 14 for detecting the rotation speed (rotation speed) of the cylinder 1 is connected to the cylinder drive system 15. On the other hand, a rotary flat drive system 16 separated from the cylinder drive system 15 is connected to the flat drive shaft 5, and the rotary flat drive system 16 is also composed of a gear or a belt transmission device. A drive motor M as a flat motor is connected to 16.

Next, the control device 20 comprises a setting device 21 and a calculation storage unit 22. As shown in FIG. 2, the setter 21 indicates the cylinder rotation speed when the rotation flat 9 is started while the cylinder 1 is accelerating and the cylinder rotation speed at which the rotation flat 9 is stopped when the cylinder 1 decelerates toward the stop. It is set as the same value P. The cylinder rotation speed P for flat start and stop is lower than the normal rotation speed N of the cylinder 1, and during the deceleration, the cylinder 1 reaches the cylinder rotation speed P until it stops.
The flat stop command output when the rotation speed P is reached is set to a value at which the flat 9 completes the stop, and in this embodiment, it is set to 10 RPM. The arithmetic storage unit 22 outputs a flat start command when the cylinder rotation speed input from the rotation detector 14 reaches the cylinder rotation speed P set by the setter 21 during the cylinder 1 startup, and the cylinder 1 decelerates toward the stop. When the cylinder rotation speed P is reached, a flat stop command is output to the drive motor M.

The operation of the card rotation flat drive device configured as described above will be described. A rotation speed P for starting and stopping the rotation flat 9 with respect to the normal rotation speed N of the cylinder 1 is set in the setting device 21 prior to the activation of the card. When the main motor MM is started, the rotation of the cylinder 1 is accelerated toward the normal rotation N as shown by the line B in FIG. When the cylinder 1 rotates, the rotation detector 14 detects the rotation speed B of the cylinder 1 and transmits it to the control device 20.

In the control device 20, the current rotation speed of the cylinder 1 transmitted to the arithmetic storage unit 22 is compared with the cylinder rotation speed P of the setter 21, and the cylinder rotation speed is flat for starting and stopping. When it becomes P, a flat start command is output to the drive motor M of the rotary flat 9. As a result, the rotary flat 9 is started during acceleration of the cylinder and is always driven immediately after the cylinder is started. Therefore, when the cylinder 1 is not rotated, the rotary flat 9 does not start and cotton is not accumulated between the cylinder 1 and the rotary flat 9 and there is no bite. Cylinder 1
Smooth driving.

When a stop command is given to the main motor MM driving the cylinder 1, the cylinder 1 having the normal rotation speed N starts decelerating rotation due to its inertia. The rotation speed of the rotation detector 14 is the cylinder rotation speed P during deceleration.
In this case, similarly to the above, the arithmetic storage unit 22 outputs a rotation flat stop command to the drive motor M of the rotation flat 9.
As a result, the rotary flat 9 stops just before the cylinder 1 stops. As described above, when the cylinder 1 is decelerated, the rotary flat 9 is driven until just before the cylinder 1 is stopped. Therefore, even when the cylinder 1 and the rotary flat 9 are driven by separate motors, the cylinder 1 and the rotary flat 9 are decelerated. The opening action that takes place between the two is not impaired.

[0012]

As described above, according to the present invention, in the case where the rotation of the cylinder and the flat is performed by another motor, the rotation of the rotary flat is started when the cylinder rotation speed at the cylinder start is set in the setter. Since it is performed when the speed is reached, the rotating flat is not started independently when the cylinder does not rotate, and it is possible to eliminate the trouble that cotton gets caught between the flat and the cylinder, and start the machine base. Can be done smoothly.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of the present invention.

FIG. 2 is a diagram showing a starting state and a stopping state of a cylinder and a rotary flat.

[Explanation of symbols]

1 cylinder, 4 flat device, 9 rotation flat, 14 rotation detector, 15 cylinder drive system, 1
6 rotary flat drive system, 20 control device, 21 setting device, A flat rotary speed, B cylinder rotary speed, M flat drive motor, MM main motor, P flat start / stop cylinder rotary speed

Claims (1)

[Claims] 1. A rotary flat drive device for a card, wherein a drive motor for driving a rotary flat drive system separately from a main motor of a cylinder drive system is independently driven to drive the rotary flat along an upper portion of the cylinder. Connect a rotation detector that detects the cylinder rotation speed to
Equipped with a setting device that sets the cylinder rotation speed for rotation flat start, and starts the flat drive motor when the signal from the rotation detector reaches the cylinder rotation speed set in the setting device while the cylinder is accelerating. A rotary flat drive device for a card, which is provided with a control device for controlling.