JPS6021928A - Device for detecting position of bobbin rail in roving frame - Google Patents

Abstract

PURPOSE:To control lift drive of bobbin rail by a simple mechanism, by detecting the distance of rise or fall of the bobbin rail as an electric signal, controlling the rise or fall of the bobbin rail with comparing the electric signal with a set value. CONSTITUTION:Both ends of the chain 17 are connected to the end of the bobbin rail 11, and the chain 17 is stretched between the chain wheels 15 and 16. The detector 19 is connected through the gear 18 or the gears 20 and 21 to the chain 17 or the chain wheels 15 and 16. The detector 19 consists of a potentiometer or an encoder. In the case of the former, the distance of rise or fall of the bobbin rail is converted through the A/D converter to a digital signal, and inputted to a calculator, and in the case of the latter it is directly inputted to the calculator. A rise or fall pattern of the bobbin rail is set in ROM prepared in the calculator, and the rise or fall drive of the bobbin rail 11 is controlled while the inputted signal is compared with the signal for ROM.

Description

TECHNICAL FIELD The present invention relates to a roving frame, and more particularly to a novel device for detecting the position of a bobbin rail thereof.

In conventional roving machines, the entire building motion is performed by raising and lowering the bobbin rail while winding the roving onto the bobbin due to the speed difference between the bobbin supported by the bobbin rail and the flyer. The position is important for controlling the entire operation of the rover frame.

For example, conventionally, in order to detect the various vertical positions of the bobbin rail, as shown in Fig. 1, the dogcos provided in the bobbin rail l that moves up and down in the direction of the arrows are placed in the passage area of the dogcoat according to the number of vertical positions to be detected. There is one in which limit switches 3 to 7 are arranged. 3 is an overrun position detection limit switch, evening is a position switch, S is a winding start position detection limit switch, 6 is a bobbin insertion position, and 7 is an overdown position detection limit switch. The rail motor and main motor stop, and the machine performs all of the dotting operations described below by switching back and forth.

(1) When the output signal from the counter is sent and the position switch is pressed while the bobbin rail is rising (full signal) (1) The main motor, pneumatic motor, and flow motor stop due to slow rotation.

(2) The full white lamp and machine stop red lamp are lit.

(3) The unevenness prevention timer counts.

(4) The dotting timer counts.

(1υ When the thin unevenness prevention timer times up (11
The unevenness prevention clutch operates and separates the spinning device from the winding device.

(2) The unevenness prevention timer counts.

When the time has elapsed, (3) the power applied to the clutch is cut off, and the spinning device and the winding device are connected again.

(Town When the dotsfing timer times up (1)
The cone belt motor releases the screw shaft brake, operates the disengagement solenoid, and starts rotating.

(2) When the motor rotates, the cone drum moves and the cone belt tension switch that was pressed is released.

(3) When the cone belt is sufficiently loosened by the movement of the cone drum, the belt is returned to the winding starting position.

(4) At that time, the silicone belt loosening return switch is pressed by the dog attached to the long rack, and the motor stops. At the same time, the pawl release solenoid is disconnected.

(1v) After finishing loosening and returning the cone belt (1)
The bobbin rail motor releases the brake and starts rotating, and the bobbin rail descends.

(2) During the descent, the winding start position switch and bobbin start position switch are pressed, but the bobbin rail continues to descend.

(3) The bobbin rail is over-down switch' (r
Press it to stop the bobbin rail motor.

(V) When the bobbin rail finishes descending +l), the cone belt motor releases the screw shaft brake, operates the disengagement solenoid, and starts rotating.

(2) The cone drum returns to its original position and tensions the belt.

(3) When the belt is tensioned, the cone belt tension switch is pushed by the leg attached to the cone drum, and the motor stops. At the same time, the pawl release solenoid is disconnected.

(After finishing tensioning the Vυ cone belt, performing doffing work, and resetting the counter, press the bobbin rail upper outer push button. (1) The bobbin rail motor releases the brake, starts rotating, and the bobbin rail Rise.

When the bobbin rail reaches the bobbin loading position, the loading position switch is released and the motor stops.

(v19 The bobbin rail stops at the bobbin insertion position,
After removing the empty bobbin, press the bobbin rail upper outer push button (1) The bobbin rail motor releases the brake, starts rotating, and the bobbin rail rises.

(2) When the bobbin rail reaches the winding start position, press the winding start position switch to stop.

(3) The full white lamp goes out.

After the above dotting operation, press the start button again to perform the spinning operation.

On the other hand, in order to perform the building motion, it is necessary to gradually reduce the amount of elevation of the bobbin rail. Conventionally, in order to do this, a mechanism based on the principle schematically illustrated in FIGS. 2(a) and 2(b) has been used.

That is, one end of the cut rack anchor bar g is attached to a member called a double anchor bar (not shown) that moves up and down with the bobbin rail, and a pinion cod is engaged with the other end, so that the cut rack anchor bar g moves up and down as the bobbin rail moves up and down. The bobbin rail is supported so as to be tiltable around the meshing portion with the bobbin rail, and when the bobbin rail is tilted by a predetermined angle θ from the horizontal, the illustrated layer change mechanism is activated to switch the direction of movement of the bobbin rail. Then, each time the layer changes, the pinion 9 rotates a certain amount in the right direction in FIG. As you progress, the layers will decrease layer by layer.

However, as mentioned above, in the case where all limit switches are used to detect the bobbin rail elevation position, a large number of limit switches are required and the structure is complicated.
Furthermore, although the bobbin rail lifting amount is adjusted by the mechanism shown in Figure 2, it is relatively simple in principle, but structurally it is far more complex than shown in the drawings. If a limit switch or the mechanism shown in FIG. 2 is used, the machine cannot be controlled numerically, and a drastic simplification of the mechanism cannot be expected.

Therefore, an object of the present invention is to provide a bobbin rail position detection method that constantly numerically detects the vertical position of the bobbin rail, enables numerical control of the machine base, and thereby achieves a significant simplification of the mechanism. The purpose is to provide equipment.

Structure of the Invention For the above-mentioned purpose, the bobbin rail position detection device according to the present invention is connected to a moving member that moves as the bobbin rail moves up and down, and is connected to be driven by the moving member, so that the bobbin rail position detecting device continuously performs the movement. a detector that detects the position of the bobbin rail, and compares the output signal of the detector with a plurality of preset bobbin rail position set values, and when the output signal matches or exceeds the set value, a corresponding actuation signal is issued. It is equipped with an arithmetic processing unit that outputs the output.The output operation signal of the arithmetic processing unit can be used to perform operations equivalent to conventional limit switches, or to reverse the direction of movement of the bobbin rail. Therefore, the mechanism can be significantly simplified.

Embodiment FIG. 3 is a schematic diagram showing an example of the detector 10 of the bobbin rail position detection device according to the present invention. During the drive via the supported pinion /3, the bobbin rail l/ is raised and lowered.

On the bobbin rail, there is a moving member that moves as the bobbin rail moves up and down, that is, a chain wheel. ,/A
It is hung on a pedestal. The detector 10 includes a wheel ig that engages and is driven by the chain 17, and a well-known encoder or potentiometer 19 that is driven by the wheel l.
Equipped with. When an encoder is used, a pulse train is output as the bobbin rail moves up and down, and when a potentiometer is used, a voltage with a different proportion to the total voltage is output as the bobbin rail moves up and down.

In Figures S (a) and (b), gear 2 is attached to the shaft of wheel/6.
0 is attached to the gear, and an encoder or potentiometer 19 is driven by a gear 21 meshing with the gear.

On the other hand, when the bobbin rail' position detecting device of the present invention uses a potentiometer t as the detector 10, as shown in the block diagram in FIG. It comprises an A/D converter 30 which is connected and converts its output into a digital representation, and an arithmetic processing unit po which compares the digital output signal from the converter with the total bobbin rail position setting value. This arithmetic processing unit qo is generally a microcomputer, and is a central processing unit (OPUJ).
+ /, read-only memory (ROM) II, and input/output device (engineering 10) q3. qlI.

Therefore, the digital output signal of the A/D converter 30 indicating each vertical position of the bobbin rail is sent to the CPU via the Eka'13f.
F/, and in gaptr, ROM4'
The data regarding the set position of the bobbin rail stored in the controller is read out and compared with the digital output signal, and a corresponding signal is output according to the result.

For example, as described with respect to the conventional technology using a limit switch, when the bobbin rail reaches the bobbin insertion position where the bobbin insertion position detection limit switch 6 is installed, this is inputted as a digital signal to the arithmetic processing unit IIO. is compared with the setting data of the bobbin insertion position, and if they match, the arithmetic processing unit HIROO outputs a signal indicating that the bobbin insertion position has been detected via its I10 data, and based on this signal, the bobbin insertion is performed. It is possible to give commands to turn on the designated lamp, stop the motor, start inserting an empty bobbin, etc.

In addition, when using it for building motion, the appropriate bobbin rail lifting amount when changing each layer can be stored in the ROM.
4! If it is set to 2, when the actual bobbin rail position matches the upper and lower limit positions of each set bobbin rail lifting amount, the processing unit lIo will output this and activate the known layer change mechanism. be able to.

Note that FIG. 7 is a diagram showing a bobbin rail position detection device of the present invention in which an encoder is used as the detector 10. Since the encoder is used, the A/D converter 30 in FIG. 6 is not required. In addition to the ROM memory, it also includes a random access memory (RAM) 4 (A;).

- As described above, according to the present invention, the bobbin rail position detection device is connected to a moving member that moves as the bobbin rail moves up and down, and is driven by the moving member. and a detector that continuously detects the movement of the bobbin rail, and compares the output signal of the detector with a plurality of preset bobbin rail position settings, and if the output signal matches or exceeds the set value. It is also equipped with a processing unit that outputs the corresponding operation signal, so the position of the bobbin rail can always be grasped numerically. This makes it possible to greatly simplify the mechanism.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a conventional pobbin rail position detection device using a limit switch, Fig. 2 (a) and (b) are schematic diagrams explaining the principle of conventional building motion, and Fig. 3 is a schematic diagram of a pobbin rail position detection device according to the present invention. FIG. 9 is a front view of the detector shown in FIG. 3; FIG. 9 is a side view and front view of another detector; 6 and 7 are block diagrams of the pobbin rail position detection device according to the present invention. In the figures, IO is a detector, /l is a bobbin rail, 17 is a moving member (chain), 30 is a converter, and lIo is a It is an arithmetic processing device. Patent applicant Toyota Industries Corporation Figure 2 (a) Figure 3 Figure 5 (a) (b)

Claims (1)

[Claims] A moving member that moves as the bobbin rail moves up and down, a detector that is connected to be driven by the moving member and continuously detects the movement, and an output signal of the detector that is set in advance. Compare the multiple bobbin rail position settings set by
A bobbin rail position detecting device for a revolving frame, comprising: an arithmetic processing unit that outputs a corresponding actuation signal when the output signal matches or exceeds the set value.