JP2582567B2 - Race piercing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a race embroidery in which the operation-stop state of each mechanism is automatically set according to pattern data at the time of starting operation or starting an arbitrary point. It is about the machine.

[Summary of the Invention]

At the start of operation, detect the state of operation of each mechanism-pause,
Initial detection described in this detection signal and part of pattern data
This is a race embroidery machine which compares a stop state with a stop state, and when the two are different, generates a switching signal in a predetermined order to automatically set an operation-stop state of each mechanism according to pattern data.

Further, at the start of an arbitrary point, the initial operation-pause state recorded in the pattern data and the desired operation-pause state at the halfway start point are calculated from the contents of the pattern data,
The switching signals are generated in a predetermined order so that the operation-pause state of each mechanism is made to coincide with the calculated operation-pause state.

[Conventional technology]

Conventionally, the operation-pause setting of each mechanism at the start of the operation of the race embroidery machine is performed by the operator operating the manual switch of each mechanism one by one.
There are drawbacks that require a great deal of time and labor and that misjudgments are likely to occur.

Also, in the case of so-called arbitrary point start, in which a part of the pattern is skipped and embroidery is started from an intermediate address, manually set so that the operation-pause operation of the skipped part is correctly connected while viewing the pattern data And sufficient checks were needed to prevent mistakes.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the above-mentioned conventional apparatus, and has an automatic initial setting function for automatically setting the operation-pause of each mechanism according to pattern data at the time of starting operation or starting an arbitrary point. To provide a lace embroidery machine.

[Means for solving the problem]

In order to achieve the above object, a lace embroidery of the present invention is provided with a switching means for switching between operation and suspension of each mechanism of a needle, a shuttle, a first thread tightening, a second thread tightening, a borer, and a borer regulation; Detecting means for detecting an operation-pause state of the mechanism, and means for comparing an output of the detection means with a target operation-pause state and generating a switching signal in a predetermined order when both are different, At the start of operation, the switching means is operated by the switching signal so that the operation-pause state of each mechanism is made to coincide with the target operation-pause state.

Also, the means for generating the switching signal may determine, without operating the machine, an operation-pause state which will be reached when the pattern data is embroidered to an arbitrary stitch, starting from an arbitrary operation-pause state. I have to.

[Action]

With this configuration, the desired operation-pause state of each mechanism is automatically set in accordance with the pattern data, without having to manually set the state at the time of starting operation or starting an arbitrary point.

〔Example〕

A race embroidery machine of a type in which a cloth frame is positioned by a servomotor according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall block diagram, FIGS. 2 (a) and 2 (b) are state tables of each mechanism, FIG. 3 is a flowchart showing a schematic operation procedure at the start of operation, FIG. 4 is a pattern data format, FIG. 5 is a flowchart showing a schematic operation procedure at the start of an arbitrary point, FIGS. 6 (a) and 6 (b) are explanatory diagrams showing the state transition of each mechanism, and FIG. And FIG. 8 is a flowchart showing a procedure for tracing design data.

Needle, shuttle, 1st thread tightening, 2nd thread tightening, borer,
Each mechanism of the bowler regulation is provided with an operation-pause switching device for performing operation-pause switching, and each operation-pause switching device is operated by a switching signal sent from the arithmetic unit to operate each mechanism at a predetermined timing. Run or pause.

Each of the operation-pause switching devices is a well-known device that turns on and off the air cylinder by an electromagnetic valve, and another device such as an electromagnetic clutch can also be used.

Each mechanism is provided with a detection device such as a reed switch, a limit switch, a proximity switch, and the like for detecting an operation-pause state, and a detection signal is input to an arithmetic unit. Further, a rotary encoder for detecting the rotation angle of the main shaft is coupled to the main shaft, and an output signal thereof is input to the arithmetic unit to generate a switching signal.

A pattern data storage device is provided for reading pattern data recorded on well-known recording means such as a crest paper, a magnetic tape, a magnetic card, a floppy disk, and collectively storing the pattern data. Generates a control signal that causes all the sequential readout mechanisms to perform related operations.

As is well known, a race embroidery machine has an operation-rest state as shown in FIG.

The pattern of operation-pause of the shuttle and the first thread tightener is the same and has the opposite relationship to the operation-pause of the borer, and since the needle and the borer do not operate at the same time, the needle, shuttle, The operation-pause state of each mechanism of the first thread tightening, the second thread tightening, and the borer is described in A to A in FIG.
There are 10 types shown in J. However, the states of G to J are temporary states in which only one stitch is continued. Further, there are 13 kinds of states in the bowler regulation as shown in FIG.

FIG. 3 shows a schematic operation sequence of the race embroidery machine at the start of operation.

At the start of operation, the initial operation-pause state recorded in the first part of the pattern data as shown in FIG. 4 is read from the pattern data storage device, and the current operation-pause detected by the detection device of each mechanism. Compare with status. If they are different, a switching signal is generated until the current operation-pause state matches the initial operation-pause state recorded in the pattern data, and the switch signal is sent to the operation-pause switching device of each mechanism. Switching between feed operation and pause is performed.

In the present embodiment, it is assumed that the initial operation-pause state of the pattern is recorded at the head of the pattern data, but the operator may input the pattern from the operation panel.

FIG. 5 shows a schematic operation sequence of the race embroidery machine at the start of an arbitrary point.

In the case of an arbitrary point start, the arithmetic unit sequentially reads out each stitch data from the pattern data storage device, traces the stitch data in the forward direction to the specified address, and there is an operation-pause of each mechanism at the specified address. Calculate the state to be done. Then, a switching signal is sent to the operation-pause switching device of each mechanism, and switching is performed so that the current operation-pause state matches the calculated operation-pause state.

As described above, at the start of operation and at the start of an arbitrary point, processing for setting the current operation-pause state to the target operation-pause is required. The operation at that time will be described with reference to the flowchart of FIG. I do.

The operation-pause state of each mechanism has the types shown in FIG. 2 as described above. In the conventional Jacquard machine,
The transition between these states is the SP-
The processing is performed in the order shown in FIG. 6 according to a code command such as E or NA. Here, one transition is performed in one cycle (one rotation of the spindle).

However, when the solenoid valve and the air cylinder are used as the operation-pause mechanism, each of the operation-pause mechanisms can be independently switched. Can be transferred without sewing unnecessary stitches.

After switching to the target state for bowler regulation, the needle and the borer are switched to the rest side so as not to damage the cloth, then the shuttle and the first thread tightening are switched, and the second thread tightening is switched (C). The needle or borer is switched to the operating side, and the operation shifts to a normal pattern operation.

Each of the processes in the above sequence may be performed in one cycle (one rotation of the main shaft). However, since each switching process is a mechanism executed when the main shaft reaches a predetermined angle, the rotation angle of the main shaft is reduced. It is also possible to sequentially generate switching signals at appropriate timings while monitoring, and to end all of the processes 1 to 2 during the first or second rotation of the main shaft.

Next, a method of tracing the pattern data in the operation sequence at the start of the arbitrary point shown in FIG. 5 to obtain the operation-pause state at the designated address will be described with reference to FIG.

First, the initial operation-pause state is stored in two status storage areas of a needle, a needle relation, and a bowler regulation relation. Next, while reading the pattern stitch data one by one, the data in the status storage area is rewritten in accordance with the operation-pause change command (command code) in the data. When the stitch counter becomes equal to the designated address, the processing is terminated, and the contents of the status storage area at this time indicate the operation-pause state required.

Note that, in the above embodiment, the arithmetic unit is initially operated.
The stitch data read from the pattern data storage circuit starting from the pause state is traced in the forward direction to the designated address and calculated. However, if necessary, the operation at any address-starting from the pause state If it is programmed so that tracing can be performed in both the forward direction and the reverse direction, it is convenient, for example, when embroidering with the handle slightly returned.

In the above embodiment, the cloth frame is driven by a servomotor.
Although the positioning embroidery machine has been described, the present invention is not limited to the case where the machine has a detection mechanism and a switching mechanism of an operation-pause mechanism, and a mechanical jacquard is used as a pattern data input and an arithmetic unit is used instead of a pattern paper. Embroidery machine of the type controlled by the electric signal output from the
No. 47465).

〔The invention's effect〕

As described above, the race embroidery machine of the present invention operates each mechanism at the start of operation or at the start of an arbitrary point.
With the function to automatically set the state of rest according to the pattern data, the time and effort required for starting operation or starting at an arbitrary point are significantly reduced as compared to the conventional equipment, as well as artificial. This has the unique effect of being able to reliably prevent the intervention of a misjudgment.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention. FIG. 2 is a state table of each mechanism. FIG. 3 is an operation flowchart at the start of operation. FIG. 4 is a pattern data format. FIG. Operation flow chart at start FIG. 6... State transition of each mechanism FIG. 7... Flow chart of operation to set operation-pause state of each mechanism FIG. 8...

Claims (2)

(57) [Claims] (A) switching means for switching operation of each mechanism of a needle, a shuttle, first thread tightening, second thread tightening, borer, and borer regulation; and (b) operation of each mechanism. (C) means for comparing the output of the detecting means with a target operation-pause state, and generating a switching signal in a predetermined order when both are different; D) A race embroidery machine wherein the switching means is operated in accordance with the switching signal to make the operation-pause state of each mechanism coincide with the target operation-pause state. 2. A patent wherein starting from an arbitrary operation-pause state, an operation-pause state which will be reached when pattern data is embroidered to an arbitrary stitch is obtained without operating the machine. The lace embroidery machine according to claim 1.