JPS62268851A - Warp and weft structure synchronous confirming apparatus of multicolor loom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a device for synchronizing a weft thread selection device of a multicolor loom and a dobby device for warp shedding control, that is to say a device for checking the warp and warp structure of a woven fabric.

In prior art multicolor looms, the weft movement is carried out by a multicolor weft insertion device. This multi-colored weft insertion device sequentially inserts various types of weft yarns into the warp yarn opening based on a predetermined weft insertion pattern for each rotation of the loom in response to instructions from the weft selection device. The shedding movement of the warp threads is then controlled by a mechanical or electrical dobby device. Since both the weft selection device and the dobby device are synchronized with the rotation of the loom, the warp and weft of the woven fabric are periodically interlaced in a predetermined warp and weft structure.

By the way, if the structure of the weft and warp yarns becomes misaligned due to some reason, such as defective weft insertion or warp yarn breakage, it becomes impossible to weave the desired structure, resulting in defective products. Become. Therefore, it is necessary to discover the deviation of the U-weave at an early stage before starting the loom or even during the weaving process after starting the loom.

On the other hand, for example, the invention of JP-A No. 58-104248 and the invention of JP-A No. 59-26556 disclose that selection of weft yarn, mispick, etc. are confirmed, and necessary control is performed at that time.

However, in these inventions, only the weft insertion pattern and the rotation of the loom are synchronized, and the relationship with the warp yarns is not considered in either case.

OBJECT OF THE INVENTION Therefore, an object of the present invention is to check the synchronization state of the weft selection device and the dobby device, that is, the misalignment of warp and weft Ml weaving, before starting the loom and during weaving after starting, and to detect defective products. The aim is to prevent the occurrence of

SUMMARY OF THE INVENTION Therefore, the present invention provides 7
By attaching a count storage section such as a sop-down counter and displaying the count contents of each count storage section independently, or by checking the count contents with a comparator, it is possible to control the rotation of the loom, that is, the weft thread selection device and the dobby. The synchronization status with the device can be checked electrically.

Such counting and checking operations can be implemented using electrical proximity switches, counters, displays, comparison circuits, etc., but they can also be implemented in the field of software by using dedicated or other computer functions. realizable.

Embodiment 1 FIG. 1 shows a synchronization confirmation device 1 for a multicolor loom assembled using dedicated circuit elements. This synchronization confirmation device 1 includes a weft selection device 2 for controlling the selection of weft yarns and a dobby device 3 for controlling the shedding pattern of the warp yarns.
It assumes the existence of

The weft selection device 2 is for setting a selected weft to a state in which it can be inserted based on a preset weft insertion pattern, and operates in synchronization with the main shaft 4 of the loom. That is, the two proximity switches 6a and 6b of the rotation detecting section 5 detect the dog 7 of the main shaft 4 at different positions, thereby determining the rotation direction from the phase difference.
The rotation state is detected, one pulse signal is generated at a predetermined rotation angle, and this is sent to the weft selection counter 8.

During this time, the weft selection counter 8 counts the pulse signal as the output of the rotation detection section 5 for each revolution of the loom, adding or subtracting it depending on the forward or reverse direction, and sends the counted value to the weft selection command circuit 9. Send it in. The weft selection command circuit 9 reads the step contents corresponding to the count value from a preset weft insertion pattern according to the count contents of the weft selection counter 8, and selects the weft yarn to be wefted based on the step contents. A corresponding drive signal is generated to drive the multicolor filling device 40 by the drive amplifier 10.

On the other hand, the dobby device 3 reads each step of the warp pattern from a card by rotating the dobby shaft 11 which is mechanically interlocked with the rotation of the main shaft 4 of the loom.
Alternatively, it is read out from the electronic memory, and the opening state of the warp yarn group is controlled based on the step content after reading out. The forward and backward steps of this dobby device 3 are controlled by the dobby detection unit 12.
The proximity switch 13 connected to the dog 1 of the dobby shaft 11
By electrically detecting 4, the reversing switch 1
By detecting the rotation direction while also determining the on/off state of 5, a pulse signal is extracted at a predetermined rotation angle.

The pulse signals from the rotation detecting section 5 and the dobby detecting section 12 are input to the counting storage sections 17 and 18, respectively. These counting storage units 17 and 18 are up-down type counters that store each pulse signal while counting, and display the counting contents on the corresponding weft selection step display 19 and shedding step display 20. send it to
It is also sent to the respective input terminals of the comparator 21 for automatic confirmation.

! Before starting the tli machine, the count storage unit 17 represents the current step of the weft selection pattern by counting the past rotational state of the main shaft 4 of the loom, and the count storage unit 18 represents the current step of the weft selection pattern by counting the past rotational state of the main shaft 4 of the loom. The past operating state, that is, the steps of the vertical unopened pattern are counted to represent the current step. Therefore, the display contents of the displays 19, 20 directly correspond to the current step of the weft thread selection pattern and the current step of the warp shedding pattern, respectively.

Therefore, the weaver can confirm the synchronization state of the weft thread selection device 2 and the dobby device 3, that is, the synchronization state of the warp and weft weaving, by visually confirming the failure of the display contents of both. .

When the synchronization check section 16 does not include the comparator 21, the synchronization state can be checked using the indicators 19 and 20 as described above.
This is done by visually confirming the displayed contents, but if this comparator 21 is provided, the synchronization state can be automatically confirmed before starting the loom. In other words, when the count contents of the count storage sections 17 and 18 do not match, the comparator 21
confirms the mismatch and immediately generates an "L" level signal, which is inverted by the knot circuit 22 and output to the loom control device as an "H" level operation prohibition signal. In this way, the comparator 21
6, if a synchronization error occurs between the weft selection device 2 and the dobby device 3, the control device of the machine will receive an operation prohibition signal and will be unable to start the loom. .

Of course, after the weaving, but before starting the continuous operation of the loom, the weft selection device 2 and the dobby device 3 are set to the first step "1" of each pattern, and the contents of the count storage 17.18 are also set. is set to the state of "1". However, even if the necessary parts are set to the initial state each time the loom is finished and the loom starts operating, the weft thread selection may be changed for some reason afterwards.
IF, a deviation may occur between the step of the weft thread selection pattern of the device 2 and the step of the shedding pattern of the dobby device 3.

That is, for example, when the power of the loom is turned off and raking is performed to restore scratches, the count values in the count storage sections 17 and 18 of the weft thread selection device 2 side and the dobby device 3 side, even if - Regardless, there may be a problem that the actual multicolor wefting device 40 and the dobby device 3 are not synchronized.

Such inconvenience is caused by the weft selection device 2 and the dobby device 3.
This can be solved by, on the side, generating a pulse with the first step in one repeat of the textile structure and forcibly presetting the respective count stores 17, 18 to the initial value "1". In this way, it is possible to detect errors within at least one repeat of the textile structure.

First, in FIG. 4, a switch 23 for detecting the leading step is provided inside the Dobby device 3, and the output of this switch 23 is passed through a carryover counter 28, and the output of the cough counter 28 is stored in the count storage section 18 as "1". ” is preset. Note that this switch 23 can be automatically operated by, for example, adding a peck indicating the first step to the card of the Dobby device 3.

Similarly, in FIG. 5, a switch 43 for detecting the leading step is provided inside the weft thread selection device 2, and the output of this switch 43 is passed through a carryover counter 47 to an acid counter 4.
The case where "1" is preset in the count storage section 17 with the output of 7 is shown. In addition, when the weft selection device 2 is configured electronically by a microcomputer or the like, it is possible to easily generate a signal at the first step through program processing.

Here, the carry-over counters 28.47 divide the first step signal, which is emitted for each first step of each repeat of the vertical and horizontal tissues, by a predetermined ratio, and
A signal is output to the count storage section 18.17 only at each first step in one repeat of the material structure, and "1" is preset.

In this way, for some reason, the actual control outputs of the weft thread selection device 2 and the dobby device 3 and the respective count storage units 17.1
Even if there is a deviation between the
It will be found within the repeat.

Next, FIG. 6 shows an example in which the count storage section 18 is constituted by a presettable counter 24, and the preset state of the counter 24 is set by a preset control circuit 25.

In this case, the maximum step as the maximum value of the count value in the count storage section 18 can be set by a maximum step setter 26. Also, this preset control circuit 25
sets the counter 24 to a preset state when it receives a signal of "1" corresponding to the first step.

Note that when the zero detection circuit 27 detects the count value "0" of the counter 24 when the loom is reversed, it acts on the preset control circuit 25 to preset the maximum step value. In this way, even if a reverse operation is performed at address 1, the counter 24 can pre-centre to the final step.

Note that the count storage section 17 may also have a configuration similar to that described above.

What is shown in FIG. 2 is an example showing the count contents of each count storage section 18.17 for the opening pattern and the horizontal insertion pattern. The opening pattern has one repeat from step 1 to step N, and the horizontal insertion pattern has one repeat from step 1 to step M. Then, 2 repeats of the opening pattern (3 repeats if it is a horizontal pattern)
repeat) to form one repeat of the textile structure. The number of steps in one repeat of this textile structure is the least common multiple of the number of repeat steps in the opening pattern and the number of repeat steps in the weft pattern.

In the illustrated example, each count store day, 17 maximum steps corresponds to 2N (= 3 M
) is set.

Further, the carry-over counter 28 outputs a signal at a rate of once every two times of the first step signal of the opening pattern, and the carry-over counter 47 outputs a signal once every third time of the first step signal of the horizontal insertion pattern. to output a signal. In this way, "1" is preset in each count storage section 17 only at each leading step in one repeat of the Mi weave.

In the above embodiment, if either the weft thread selection device 2 or the dobby device 3 is configured electronically by a microcomputer or the like, the contents of the internal selection counter and the contents of the count storage section are as follows. Of course, they're in sync. For example, as shown in FIG. 1, when the weft selection device 2 is configured electronically, the contents of the weft selection counter 8 and the contents of the count storage section 17 are synchronized, and no deviation occurs. . Therefore, especially in this case, the operation of presetting "1" in the count storage section using the first step signal as described above can be performed on the dobby device 3 side. Further, the maximum step per day of each count storage unit 17.1 may be set based on one repeat of the opening pattern of the dobby device 3.

Note that FIG. 3 shows the relationship between each pattern and the count value of each count storage section 17, 18. When the final step M of the weft insertion pattern of the weft selection device 2 is the maximum step knob N of the shedding pattern of the dobby device 3, the count storage section 17
The counting contents are set to repeat as shown in FIG. 3(a). Further, in the case of final step M-maximum step N, the count contents of the count storage sections 17 and 18 directly correspond to the steps of each pattern, as shown in FIG.

Conversely, when the final step M is the maximum step N, the contents of the count storage section 17 are set to an integral multiple of the number of steps in the weft insertion pattern, as shown in FIG. Set to match the step. By setting in this way, the count storage section 17.
The count contents of 18 will always match. In this way, the counting contents (counter) on the weft thread selection device 2 side are set at the step of the weft thread selection device 2 so that the pattern setting can be performed in the shortest repeat between the weft thread selection device 2 and the dobby device 3. It is set to be defeated by the step on the Dobby device i3 side, not by itself.

Embodiment 2 Next, the embodiment shown in FIG. 7 shows an example in which the above counting, storing, displaying and comparing functions are performed using a microcomputer.

Each part of the rotation detecting section 5 and the Dobby detecting section 12 is connected to the CPU 30 through the input boat 29 and the bus 29a. R
OM31, RAM with t source 33 for bar 7-/bu
32 etc.

Further, these CPU 30 and the like are connected to the weft selection command circuit 9 through an output port 35 and to an operation prohibition circuit of the control device of the loom through an inactivation switch 36. Incidentally, the inactive switch 36 is used to prohibit the output of the driving prohibition signal when the synchronization of the history and history has not yet been performed, such as when on a rocky boat. In addition, the display 19.2
0 is a console interface 34 along with a keyboard 37, forward switch 38, reverse switch 39, etc.
It is connected to the bus 29 via.

Now, normally, the switching timing of the warp yarn spacing pattern is set earlier than the switching timing of the weft insertion pattern. Therefore, if the count contents are displayed at different timings, the timings will be different, making it difficult to confirm the synchronization state. Therefore, it is convenient if such display switching is made to coincide with the display switching timing of the weft thread selection device 2, for example, so that both can be performed at the same time.

FIGS. 8 and 9 show a series of processing steps in relation to the weft selection timing and the shedding switching timing. Note that the counter in the following process is
30, which is an abstract counter for purposes of explanation, but may also be each of the concrete counters described above.

As shown in FIG. 8, at the timing of weft thread selection, it is first determined whether or not the rotation is in the normal direction, and a counter for weft thread selection is incremented or decremented depending on the state of normal rotation or the state of reverse rotation. Subsequently, the step counter is incremented or decremented. After both counters have been incremented, a determination is made as to whether the weft selection counter has exceeded its final value and a NO
If YES, the weft selection counter is reset to "1". After that, a judgment is made as to whether or not the maximum step has been exceeded for the step counter, and if the answer is NO, it will jump to the next step, but if it is YES, it will be set to "1" by operating the [Step Counter Maximum Step]. will be reset. In addition, when the weft selection counter and step counter are decremented, it is then determined whether [weft selection counter = 0], and if the answer is No, the process jumps to the next step, but if it is YES, the [weft selection counter Final value], and then it is determined whether the step counter is O or not.
When S, [Stenbu counter=maximum stepco is set. Following the above process, the weft selection I command is output, and then the contents of the step counter and the dobby counter of the dobby device 3 are displayed. and,[
Dobby Counter Step Counter] judgment is made,
When the answer is YES, the process jumps to the next step, but when the answer is NO, it is determined that the synchronization state is out of sync, and a signal prohibiting operation is output.

On the other hand, as shown in FIG. 9, in the aperture switching control of the dobby device 3, at the time of the aperture switching timing, a judgment is made as to whether or not the rotation is in the forward direction.If YES, the dobby counter is incremented, and then the maximum step A judgment is made as to whether or not the value exceeds 1. If the answer is NO, the process moves to the step described below, but if it is YES, [Dobby counter = 1]
is set, and then it is determined whether there is a first step signal, and if YES, it moves to the next step, but
When the answer is No, a driving prohibition signal is output. Also, if NO in the judgment process of forward or reverse rotation, the Dobby counter is decremented, and then a judgment is made as to whether it is "0" or not. If NO, the process jumps to the next step, but if YES , the Dobby counter is set to the maximum step. Next, it is determined whether or not there is a first step signal, including the case where the maximum step is not exceeded during normal rotation as described above. If NO, the process jumps to the next step, but if YES, the [Dobby counter = 1]
is set to

In this way, in any operation process, it is first determined whether or not the rotation is normal, and the counter value is set in the appropriate direction based on that, so the rotation direction of the dobby device 3 and the main shaft 4 of the loom is According to the synchronous RFI authentication device 1,
You can always check the synchronization.

In this second embodiment, the CPU 30, ROM 31 and RA
M32 and the like achieve the functional elements of the synchronization confirmation section 16 together with the aforementioned program, and therefore are substantially the same as the functional elements of the first embodiment.

Note that such computer functions are not limited to a dedicated computer, but can also be realized using the functions of a computer for controlling a loom.

Effects of the Invention In the present invention, the synchronization state of the weft selection device and the dobby device, that is, the synchronization state of the warp and weft Mi weaves of the fabric, can be checked before or after starting the multicolor weft insertion loom. Because it can be confirmed visually or automatically,
Since startup in an incorrectly synchronized state or operation in an out-of-synchronization state is eliminated, incorrect weaving can be prevented.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the synchronization confirmation device of the present invention according to Embodiment 1, FIGS. 2 and 3 are explanatory diagrams of the correspondence between the maximum step on the dobby device side and the final step on the weft selection side, and FIG. The figure is a circuit diagram of the pre-sent part of the counter on the dobby device side, Fig. 5 is a circuit diagram of the preset part of the counter on the weft thread selection device side, Fig. 6 is a block diagram of the preset part of the counter, and Fig. 7 is according to the second embodiment. FIG. 8 is a block diagram of the synchronization confirmation device, FIG. 8 is a flowchart of the weft thread selection operation (synchronization confirmation operation), and FIG. 9 is a flowchart at the time of switching the shedding pattern. 1. Multicolor textile machine's 3tll confirmation device, 2. Weft selection device, 3. Dobby device, 4. Main shaft of loom, 5.
Rotation detection section, 8. Weft selection counter, 9. Weft selection instruction circuit, 11. Dobby shaft, 12. Dobby detection section, 15. Reverse rotation switch, 16. Synchronization confirmation section, 17
．． 18...Count storage section, 19.20...Display unit, 21.
- Comparator, 24... Counter, 25... Preset control circuit, 28.47... Counter for carryover, 30...
CPU, 31..ROM', 32..RAM. Figure 2 Figure 3 (a) (b) (c) Figure 7, ? Figure 9 Figure 8 Strategy

Claims (5)

[Claims] (1) In a loom that uses a weft thread selection device to select a weft thread based on a weft insertion pattern and also uses a dobby device to control the shedding pattern of the warp threads, a dobby detection unit that detects advance and retreat of steps in the shedding pattern. , a counting storage section that counts and stores the number of steps in the shedding pattern based on the output signal from this dobby detection section; a rotation detection section that detects the rotational state of the main shaft of the loom; The present invention is characterized by comprising a count storage section that counts and stores the number of selection steps, and a synchronization confirmation section that confirms the synchronization state of the weft thread selection device and the dobby device from the counts of both of the count storage sections. A device for confirming the synchronization of weft and structure of multicolor looms. (2) The synchronization confirmation device for a multicolor loom according to claim 1, wherein the synchronization confirmation section includes a display that displays each count value of both count storage sections. (3) Claims characterized in that the synchronization confirmation section includes a comparator that compares the count values of the two count storage sections, and a circuit that outputs an operation prohibition signal when the count values do not match. A device for confirming warp and weave structure synchronization of a multicolor loom according to item 1 or 2. (4) Each of the count storage units includes a counter that counts the corresponding number of steps, a setting device that sets the maximum value of the count value,
A multicolor loom according to claim 1, 2 or 3, further comprising a preset control circuit that presets the counter to "1" when the counted value exceeds the maximum value. History and organization synchronization confirmation device. (5) The above maximum value is set to the least common multiple of the number of 1 repeat steps of the opening pattern and the number of 1 repeat steps of the horizontal inserting pattern, and the preset control circuit is configured to issue a signal from the corresponding device for each of the above least common multiples. 5. The weft and weave structure synchronization confirmation device for a multicolor loom according to claim 4, wherein the counter is preset to "1" also by a leading step signal.