JPH04263644A - Pattern-controller in dobby unit of weaving machine - Google Patents

Abstract

PURPOSE:To enable the same woven pattern using only one input pattern by each of two shedding motions even if the dobby-shedding motion is a heald frame-drawing up type or a heald frame-drawing down type. CONSTITUTION:A switch 6 for changing from reversion mode-directing position to non-reversion mode-directing position is connected to a pattern-control computer (C). In case the switch 6 is switched to the non-reversion mode-directing position, a pattern input by an input-setting unit 5 is outputted without reversion by the pattern-control computer (C). In case the switch 6 is switched to the reversion mode-directing position, the pattern input by the input-setting unit 5 is outputted after reversion by the pattern-control computer (C).

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pattern pattern control device for a dobby device of a loom.

0002

[Prior Art] Based on reading of a handle pattern stored in advance, a command is sent from a central processing unit to an electric drive system (for example, an electromagnetic solenoid) that constitutes a dobby device. An electronic dobby device that performs individual drive control is disclosed in JP-A-58-41932. That is, the dobby drive mechanism uses the rotational driving force of the loom drive motor as its drive source, but when the electrical drive system is turned on, the dobby drive mechanism and the heald frame side are mechanically connected, and the loom is driven. The rotational driving force of the motor is transmitted to the heald frame side via the dobby drive mechanism. With such an electronic dobby device, it is possible to easily change the handle pattern.

0003

However, there are two types of dobby shedding devices: a type that pulls up the heald frame and a type that pulls down the heald frame.The electronic dobby shedding device is driven based on the set pattern pattern. However, the weaving patterns in the two types of dobby shedding devices are different. That is, the ON state of the electromagnetic solenoid in the pull-up type dobby opening device corresponds to the OFF state of the electromagnetic solenoid in the pull-down type dobby opening device, and the handle pattern used in the pull-up type dobby opening device corresponds to the OFF state of the electromagnetic solenoid in the pull-down type dobby opening device. It will be used as an inverted pattern. Therefore, even in the case of the same pattern, separate pattern inputs are required for the pull-up type and the pull-down type, making pattern pattern input a complicated and error-prone task.

SUMMARY OF THE INVENTION An object of the present invention is to provide a handle pattern control device for an electronic dobby device which can easily input a handle pattern in both pull-up type and pull-down type dobby opening devices and can take out a desired handle pattern. shall be.

[0005]

[Means for Solving the Problems] To this end, in the present invention,
a pattern control means for storing a pattern pattern and instructing the electric drive system to operate or deactivate based on reading of the stored pattern pattern; and a pattern pattern for inputting and setting the pattern pattern to the pattern pattern control means. A pattern pattern control device is constituted by a pattern input device and a pattern pattern switching device capable of switching between an inverted pattern pattern and a non-inverted pattern pattern as a pattern pattern outputted from the pattern output control device.

[0006]

[Operation] As the pattern pattern switching means, there is a method of switching the memory pattern read out by the pattern output control means between inverted and non-inverted, and a method of switching the pattern pattern input to the pattern output control means between inverted and non-inverted. There are two ways to input the information. In the former method, if the pattern switching means is switched to the inversion mode, the pattern output from the pattern output control means will be an inversion of the stored pattern. If the mode is switched to the non-inversion mode, the pattern pattern output from the pattern output control means is the same as the stored pattern pattern.

In the latter method, the pattern pattern to be stored is input as either an inverted pattern or a non-inverted pattern depending on the switching mode of the pattern switching means.

[0008]

[Example] Hereinafter, an example embodying the present invention is shown in Figs.
This will be explained based on FIG. 6. FIG. 1 shows a pull-down type dobby shedding device, in which a plurality of heald frames 1 are urged upward by a shedding spring 2. Forming an opening by vertically moving a plurality of heald frames 1 is performed by an electronic dobby device comprising a dobby drive mechanism 3, an electromagnetic magnet 4, and a handle control computer C for each heald frame 1. An input setting device 5, a changeover switch 6, and a rotary encoder 7 for detecting the rotation angle of the machine are connected to the patterning control computer C, and the fabric pattern is input and set to the patterning control computer C by the input setting device 5. Ru.

As shown in FIG. 2, a patterning cam 8 is operatively connected to the loom drive motor M. Each dobby drive mechanism 3 is in a relationship capable of transmitting an action to the handle cam 8, and an electromagnetic magnet 4 is incorporated in each dobby drive mechanism 3. When the electromagnetic magnet 4 is in a demagnetized state, the dobby drive mechanism 3 holds the heald frame 1 in the upward movement position, and when the electromagnetic magnet 4 is excited, the dobby drive mechanism 3 changes the heald frame 1 from the top to the bottom.

FIG. 3 shows a pattern pattern P input to the pattern control computer C by the input setting device 5. The numbers in the horizontal row represent the frame rank of heddle frame 1, and the numbers in the vertical column represent the weft insertion rank. The x mark represents the excitation of the electromagnetic magnet 4, and the blank square represents the demagnetization of the electromagnetic magnet 4. The change-over switch 6 can be switched between a reversal mode command position and a non-reverse mode command position, and when the change-over switch 6 is switched to the reversal mode command position, the pattern control computer C operates every rotation of the machine. In response to the reference signal obtained from the rotary encoder 7, the stored pattern pattern P is read out, inverted, and output. When the changeover switch 6 is switched to the non-inversion mode command position, the pattern control computer C outputs the read pattern P without inverting it.

FIG. 4 shows an excitation/demagnetization pattern Q+ output from the pattern pattern control pattern C. The numbers in the bottom horizontal row represent the heddle frame ranking, and the numbers in the leftmost vertical column represent the weft insertion ranking. The other numbers 0 and 1 represent excitation and demagnetization of the electromagnetic magnet 4, with the number 1 corresponding to excitation and the number 0 corresponding to demagnetization. Similar to FIG. 4, FIG. 6 shows an excitation/demagnetization pattern Q-.

The excitation/demagnetization pattern Q+ shown in FIG. 4 is output from the pattern control computer C when the changeover switch 6 is switched to the non-inversion mode command position. The excitation/demagnetization pattern Q- in FIG. 6 is output from the pattern control computer C when the changeover switch 6 is switched to the reverse mode command position. Assuming that the excitation/demagnetization pattern Q+ is applied to the pull-down type dobby opening device of FIG. 1, the excitation/demagnetization pattern Q- of FIG. 6 is applied to obtain the handle pattern P of FIG. 3 in the pull-up type dobby opening device of FIG. It is necessary to use Switching between the use of such excitation/demagnetization patterns Q+ and Q- can be done by simply switching the selector switch 6. For example, the handle pattern applied to the pull-down type dobby opening device shown in FIG. 1 is stored in the handle control computer C. Once this is determined, selection of the same pattern pattern in the pull-up dobby opening device shown in FIG. 5 can be made by simply switching the changeover switch 6 to the reversal mode command position. Therefore, in both the pull-up type and pull-down type switching shedding devices, pattern pattern input can be performed without worrying about the difference in shedding methods, and errors in input settings are also reduced.

The pattern output control program in the embodiment described above outputs the stored pattern as either an inverted pattern or a non-inverted pattern, but the pattern pattern input by the input setting device is output as either a non-inverted pattern or a non-inverted pattern. It is also possible to implement a design control program in which any pattern of inversion is stored. Further, the present invention can be implemented by a circuit configuration instead of program control.

[0014]

Effects of the Invention As detailed above, in the present invention, the pattern pattern outputted from the pattern control device can be switched to either an inverted pattern or a non-inverted pattern by the pattern pattern switching device. By switching the switching means, the pattern pattern that has been input and set to be applied to either the dobby opening device or the pull-down method can be easily reversed, eliminating the complexity of pattern pattern input and setting work and eliminating input errors. This has the excellent effect of reducing the amount of

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a pull-down type dobby opening device and an electronic dobby device.

FIG. 2 is a schematic plan view of the electronic dobby device.

FIG. 3 is a pattern diagram showing a pattern pattern input to a pattern control computer.

FIG. 4 is a diagram of an excitation/demagnetization pattern corresponding to a pattern pattern.

FIG. 5 is a schematic side view showing a pull-up dobby opening device and an electronic dobby device.

FIG. 6 is a diagram of an excitation/demagnetization pattern corresponding to a reversal pattern of a handle pattern.

[Explanation of symbols]

4... Electromagnetic magnet constituting an electric drive system, 5... Input setting device, 6... Changeover switch, C... Pattern pattern control computer.

Claims (1)

[Claims] 1. A dobby device that controls the individual shedding of a plurality of heald frames by activating and inactivating an electric drive system, which stores a handle pattern and performs a dobby operation based on read-out of the stored handle pattern. A pattern output control means for commanding the operation and non-operation of the electric drive system, a pattern input means for inputting and setting a pattern pattern to the pattern generation control means, and a pattern pattern output from the pattern generation control means. A pattern pattern control device in a dobby device of a loom, comprising a pattern switching means capable of switching between an inverted pattern pattern and a non-inverted pattern pattern.