JPS6233858A - Automatic embroidering machine with boring function - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an embroidery sewing machine equipped with a boring knife,
In particular, the attachment of the boring knife is such that it is possible to accurately perform offset processing in response to positional deviations.

[Conventional technology]

When attaching the boring knife C to the needle bar for making holes in fabric, as shown in Figure 11, unlike when attaching the needle A to the needle bar B, the boring knife C is attached at the needle bar B. Generally, it is shifted in the lateral direction by a certain distance J with respect to the axis of . In an embroidery machine equipped with such a boring knife, in order to prevent the hole position from being misaligned due to this misalignment by adjusting the position of the embroidery frame, this misalignment is added to the position data that determines the position of each stitch on the embroidery hoop. The data including the offset amount corresponding to the offset amount is stored in an external storage device (for example, a paper tape).

More specifically, among the position data, this is for the position data of the stitch immediately after switching from the embroidery operation using a needle bar with a normal needle attached to the drilling operation using a needle bar attached with a boring knife. The data obtained by adding the amount of data according to the direction and size of the deviation is stored in advance,
Furthermore, data obtained by subtracting an amount of data corresponding to the direction and magnitude of this deviation from the stitch position data immediately after the switching from the punching operation to the embroidery operation is stored in advance.

[Problem that the invention seeks to solve]

However, recent embroidery sewing machines have a function that enlarges, reduces, rotates, and inverts data read from an external storage device, and then executes embroidery operations based on the enlarged, reduced, rotated, and inverted data. is provided. For this reason, even the offset amount data, which is normally constant for each embroidery machine, is enlarged, reduced, rotated, and reversed by this function, making it impossible to accurately correct the offset of the hole punching position. The problem arises that it disappears.

The present invention has been made in view of the above-mentioned points, and an object thereof is to provide an embroidery sewing machine in which the offset of the drilling position caused by the mounting position of the boring knife can be corrected accurately at all times.

[Means for solving problems]

The outline of the embroidery sewing machine of the present invention will be explained with reference to FIG.
While the needle bar to which the boring knife is attached is selected by the head, an embroidery frame offset means 21 is provided for offsetting the position of the embroidery frame according to the deviation in the attachment position of the boring knife. As the determination means 20, for example,
It is preferable to use a needle bar position detection device that detects the position of the selected needle bar on the sewing machine head. As another example, it is also possible to make the determination based on the progress of the embroidery sewing sequence program, without directly using the needle bar position detection device. - For example, the embroidery frame offset means 21 is
At the beginning of the period in which the needle bar to which the boring knife is attached is selected, the position of the embroidery frame is moved by an amount corresponding to the displacement amount 2, and at the end of the period, the needle bar with the boring knife is selected. By returning the position to the original position, the position of the core embroidery frame during the selection period of the bowl link knife can be offset. Specifically, based on the output of the determining means 20, it is detected that the needle bar selection position has been switched from Cir 1lf, where the sewing needle is attached, to the position where the boring knife is attached, and vice versa. , In response to this switching detection, the embroidery frame is moved to offset it, and then returned to its original position to cancel the offset.

Further, according to the present invention, the attachment of the bowl link knife is performed in order to offset the position of the embroidery frame in accordance with the positional deviation in the data indicating the content of the embroidery operation which is block-coded in advance and given from an external storage device such as paper tape. offset data invalidating means 22 is provided to invalidate this offset data when the offset data is included.

[Effect]

According to this invention, the needle bar selection position in the sewing machine head is determined, and if it is determined that the needle bar to which the boring knife is attached is selected, the position of the embroidery frame is determined between the two. Since the offset is automatically performed, there is no need to include offset data in the embroidery data provided from an external storage device such as paper tape. Therefore, the boring scalpel can be installed to always accurately offset the embroidery frame according to the positional deviation, without being affected by data conversion processing such as enlarging, reducing, reversing, or rotating the embroidery data. can.

Further, according to the second invention, since the offset data invalidation means is provided, even if offset data is included in the embroidery data, it is invalidated and double offset processing is prevented from being performed. To prevent.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a control block diagram of an embodiment of an automatic stitch a sewing machine with a boring function according to the present invention, and cPXI'1
, H, 0M2, and a working RAM 3, the entire operation of this embroidery sewing machine is controlled by a microcomputer section 4. The operation spring I 5 indicates the position of the embroidery frame 19 for each stitch.

It is used to read out Y data and function data for instructing various operations of the embroidery machine, such as color change and stopping the main shaft of the sewing machine. The electric film motor 7 is connected to each sewing machine head 8.
By sliding a plurality of needle bars 9 provided on the needle in the horizontal direction during electromembrane, one desired needle bar 9 is positioned at the position where the embroidery (or hole punching) operation is to be performed (embroidery operation position). be. In each sewing machine head 8, a boring knife 10 is attached to a predetermined one of the plurality of needle bars 9 at a position shifted by a fixed distance in a fixed direction from the axis, and each of the remaining needle bars Attached to needle 9 are needles 11 through which threads of different colors are threaded. - As an example, in this embodiment, the description will be given assuming that the bowl link knife 10 is attached at a position offset by +12 mm from the axis of the needle bar 9 in the X-axis direction of the embroidery frame 19.

The needle position detection sensor 12 detects which needle bar 9 in each sewing machine head 8 is at the embroidery operation position. The sewing machine main shaft motor 16 rotates the sewing machine main shaft of the embroidery sewing machine.

The rotary encoder 14 detects the rotation angle of the motor 16. The X-axis pulse motor 15 moves each embroidery frame 19 in the X-axis direction, and the Y-axis pulse motor 16 moves each embroidery frame 19 in the X-axis direction. The motors 15 and 16 are driven by an X-axis pulse motor driver 17 and an X-axis pulse motor driver 18, respectively.

An example of the switches provided on the operation panel 5 is shown in FIG. 12. The start switch SW1 is a switch for rotating the main shaft of the sewing machine, and the stop switch SW1 is a switch for rotating the main shaft of the sewing machine.
2 is a switch for stopping the main shaft of the sewing machine. Switch with offset SW3, switch without offset SW
4, the tape data recorded on the paper tape is attached to the embroidery frame 19.
This is a switch for instructing whether or not the data includes offset amount data for position adjustment.

The 0 data set switch SW6 is a switch for making final settings of various data before starting the pricking and drilling operations.

The conversion switch SW7 is a switch for enlarging, reducing, rotating, and reversing the tape data read by the paper tape reader 6. The needle bar order switch SW8 is a switch for setting the needle bar switching order according to each electromembrane timing. The numeric keypad switch SW9 is a switch for inputting various numerical values. step switch SW
IO is a switch for moving the input operation of one type of numerical value to the next step after confirming the input of the different types of numerical value using the numeric keypad switch SW9. The set switch SWt1 is operated when registering numerical data input using the numeric keypad switch SW9.

An example of the embroidery and hole punching operations performed by this multi-needle type peeling sewing machine will now be described with reference to the flowcharts shown in FIG. 3 and subsequent figures.

When the power of the embroidery sewing machine is turned on, as shown in FIG. 3, the process first goes through a predetermined initial routine and then goes to a sewing machine main shaft stop routine. In the sewing machine main shaft stop routine, as shown in FIG. 4, first, the stored contents of the working RAM 3 are cleared in the stop initial routine. Next, it is determined whether the tape read switch SW5 of the operation panel 5 is turned on (step 101). The switch SW5
is inserted, the paper tape reader 6 reads out the tape data (x, y data and function data) one step at a time, and sequentially stores the read data in the auxiliary memo IJG in the CJI (steps 102 to 106). ). When reading and storing are all completed, it is then determined whether or not the needle bar order switch SW8 has been turned on, as shown in FIG. 5 (step 107). When the switch SW8 is turned on, the numeric keypad switch S
The numerical value input through W9 is used as needle bar order data that specifies a specific needle bar 9 among the plurality of needle bars 9 of each sewing machine head 8 that should perform the pricking tAA (g is drilling) operation first. Register in working RAM 3 (step 108
, 109). Thereafter, on the condition that the step switch 5W10 is turned on, new input numerical values are sequentially registered in the working RAM 3 as needle bar order data that designates the needle bar 9 that should perform the embroidery (or punching) operation next (step 110°111.109). If the step switch SW10 is not turned on and the set switch SW11 is turned on, this registration process ends (step 110゜1
12) o This sets the order of the needle bars 9 in each sewing machine head 8 to perform the embroidery (or punching) operation between each electrode film and the next electrode film.

Next, it is determined whether the conversion switch SW7 is turned on (step 116). When the switch SW7 is turned on, the numerical values input by the numeric keypad switch SW9 are stored in each X in the auxiliary memory.

It is registered in the working RAM 3 as magnification data A for setting the degree of expansion or reduction (ie, magnification) of the Y data (step 114). Subsequently, in step 115, the registration of the magnification data is completed on the condition that the set switch SWI1 is turned on, and the process moves to step 116. In step 116, the new input numerical value is
, is registered in the working RAM 3 as rotation angle data θ that determines the rotation angle of the Y data. Furthermore, on the condition that the set switch SW11 is turned on, the process moves to step 118 in FIG.
AM3 (input numerical value "0" indicates positive polarity, and input numerical value "1" indicates negative polarity).

Subsequently, when the set switch 5W11 is turned on, this registration process ends (step 119). This allows each X.

Setting of magnification A1, rotation angle θ, and polarity B for Y data is completed.

Next, after other processes in the sewing machine spindle stop routine are executed, it is determined whether the data set switch SW6 has been turned on (step 120).

If the switch SW6 has never been turned on, it is determined whether the switch SW6 has been turned on (step 121). When the switch SW6 is turned on, it is then determined whether the offset switch SW3 is turned on (step 122).
). When the switch SW3 is turned on (that is, when the tape data read by the paper tape reader 6 includes offset amount data), X, Y in the auxiliary memory
Among the data, from the X and Y data of the stitch immediately after the switching from the embroidery operation using the needle bar 9 with the needle 11 attached to the drilling operation using the needle bar 9 with the boring knife 10 attached, the attachment of the knife 10 is determined. subtracts a value depending on the direction and magnitude of the positional shift. In addition, a value corresponding to the direction and magnitude of the positional deviation of the knife 10 is added to the X and Y data of the switch immediately after the changeover from the drilling operation to the stabbing operation (steps 126 and 124). ). That is, in this embodiment, 1 from the Y data of the X and Y data of the stitch immediately after switching to the punching operation is performed.
2 mm is subtracted, and 12 mm is added to the Y data of the X and Y data of the stitch immediately after switching to the embroidery operation. This removes the data at offset i from the tape data in the auxiliary memory. Next, the auxiliary memory address storing the tape data of the first stitch is designated (step 125).

On the other hand, when the offset switch SW3 is not turned on (that is, when the tape data read from the paper tape reader 6 does not include offset amount data)
In this case, the process proceeds to step 125 without performing the above-mentioned addition/subtraction processing, and the address of the auxiliary memory is specified.

Next, it is determined whether the start switch SW1 has been turned on (step 126). If the switch SW1 has been turned on, the sewing machine main shaft stop routine is completed and the sewing machine main shaft operation routine is proceeded to.

In the sewing machine main shaft operation routine, as shown in FIG. 7, first, the sewing machine main shaft motor 13 is driven to start rotation of the sewing machine main shaft (step 201), and then a predetermined operation initial routine is performed.

While determining whether or not it has been sorted, whether or not an electric membrane code indicating the electric membrane has been given (steps 203 and 204)
, this operation process is continued on the condition that both of them are negative.

When a clock signal is applied from the rotary encoder 14 during the processing of this sewing machine main shaft operation routine, the processing is interrupted each time and the routine proceeds to an encoder clock interwoven subroutine as shown in FIG.

In the encoder clock interwoven subroutine,
After counting and amplifying one encoder counter (step 301), it is sequentially determined to which processing timing the count value corresponds to step 50.
2, 308), performs processing according to each timing. −
For example, at the timing of moving the embroidery frame, it is first determined whether the sewing machine spindle stop request flag is set (step 303). If not set, after reading one stitch worth of tape data (x, y data and function data) from the specified address in the auxiliary memory (step 604), the working R,
Based on the magnification data A1 rotation angle data θ and polarity data B in AM 3, arithmetic processing is performed to enlarge, reduce, rotate, and reverse the X and Y data in the tape data (step 305). Obtained data X'
, Y', the embroidery frame 19 is moved in the X-axis direction and the Y-axis direction by the X-axis pulse motor 15 and the X-axis pulse motor 16, respectively (step 606).

When any of the timing processes in the encoder clock interwoven subroutine is completed, the interrupted process of the sewing machine main shaft operation routine is resumed.

Further, when an origin signal is given from the rotary encoder 14 during processing of the sewing machine main shaft operation routine, the processing is interrupted each time and the process proceeds to the encoder origin interlaced subroutine as shown in FIG. 10, where the encoder counter is reset (step 401). ). When the reset processing is completed, the interrupted processing of the sewing machine main shaft operation routine is resumed.

In this way, each sewing machine head 8 carries out the pricking operation (or drilling) with the needle bar 9 in the first order.

During this piercing (or drilling) operation, if it is confirmed that the read-out function data includes an electric film code (step 204, Fig. 7), the sewing machine spindle stop request flag is set and the stop counter is set. For example, it is set to "2" (step 205), and the sewing machine main shaft motor 16 is decelerated (step 206). Then, at each sewing machine spindle stop timing in the encoder clock interwoven subroutine, the stop counter is counted down one by one and it is determined whether or not the count value has reached zero (steps 608 to 311). When this happens, the sewing machine main shaft motor 16 is stopped and the sewing machine main shaft stop completion flag is set (
step 612). Next, after confirming the cent of this stop completion flag and confirming the existence of the electrical membrane code (7th
In accordance with the needle bar order data in the working RAM 3 (steps 203 and 207), the electromembrane motor 7 slides the needle bar 9 in the next order to the embroidery operation position as shown in FIG. 8 (step 208). Next, if the needle position detection sensor determines whether or not this needle bar 9 in the embroidery operation position is the needle bar 9 to which the boring knife 10 is attached, it is determined whether the embroidery frame 19 is attached or not, and if the knife 10 is attached in the direction of the misalignment. The motors 15 and 16 are moved in the same direction by the same amount as this deviation (step 210). That is, according to the above example, each embroidery frame 19 is moved by +12 mm in the Y-axis direction by the motor 16. If the needle bar 9 selected this time is not the needle bar 9 to which the boring knife 10 is attached, the needle bar 9 that was in the embroidery operation position until just before is set to Bo + IJ Songs 10.
The needle position detection sensor 12 determines whether or not the needle bar 9 should be installed.
The determination is made based on the detection result (step 211). If the boring knife 10 is not attached to the needle bar 9, each embroidery frame 1
9 is moved by the motors 15 and 16 in the opposite direction to the mounting position of the knife 10 by an amount equal to the magnitude of this deviation (step 212). That is, according to the above example, each embroidery frame 19 is moved by 12 circles in the negative direction of the Y-axis by the motor 16. On the other hand, the needle bar 9 that was selected just before is not moved by the boring knife. As described above, the offset adjustment of the position of the embroidery frame 19 when changing the needle bar 9 to which the boring knife 10 is attached is performed accurately in accordance with the positional deviation of the knife 10.

Next, the process returns to the first step of the sewing machine main shaft operation routine to restart the operation of the sewing machine main shaft (step 201), whereupon the embroidery (or punching) operation using this new needle bar 9 is executed in the same manner as described above. If the presence of the electrical film cord is confirmed during this operation, the switching process of the needle bar 9 and the process of adjusting the position of the embroidery frame 19 are performed again in the same manner as described above.

In this way, the boring knife 10 can be attached to the embroidery frame 19 to offset the drilling position caused by the positional deviation.
The embroidery (or punching) operation using each needle bar 9 can be sequentially executed while accurately correcting the positions of the needles.

After determining whether or not offset amount data is included based on the operation status of the offset presence switch SW3 on the operation panel 5, if offset amount data is included, the offset amount data is removed. However, if an embroidery operation is to be performed using only tape data that does not include such offset amount data, this function may not be provided.

Further, in this embodiment, the axis of the needle bar 9 is located at the Y of the embroidery frame 19.
Although the case has been described in which the boring knife is installed at a position shifted by +12 mm in the axial direction, the mounting position of the boring knife may be shifted arbitrarily in terms of direction and distance. In that case, the microcomputer section 4
In the program executed by
The numerical value and coordinate direction of the offset correction data used in steps 210 and 212 of 6° 124 and FIG. 8 may be set to correspond to an arbitrary deviation. In addition, in order to set the offset processing data used in steps 123, 124, 210° 212 in advance in the program, a switch for setting this data is provided on the operation panel 5, and the switch is used to set this data. You may change ζ so that you can change it freely.

〔Effect of the invention〕

As described above, according to the automatic embroidery 6J sewing machine with a boring function according to the present invention, the position of the embroidery frame can always be accurately adjusted according to the positional deviation, so that the installation of the boring knife can be performed accurately. can always accurately correct offsets in the drilling position caused by positional deviations.

Furthermore, if a means for invalidating the offset amount data among the data read from the external storage device is provided, the embroidery operation can be executed using data that already includes the offset amount data. In this case, the offset of the drilling position can be corrected accurately.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram showing an overview of the present invention, FIG. 2 is a block diagram showing the hardware configuration of an embodiment of an embroidery sewing machine with a boring function according to the present invention, and FIGS.
The figure is a flowchart implying an example of a program executed by the microcomputer section of FIG.
The figure is a main flowchart, Figures 4 to 6 are flowcharts showing the sewing machine spindle stop routine in the main flowchart in Figure 3, and Figures 7 and 8 are flowcharts showing the sewing machine spindle operation in the main flowchart in Figure 3. 9 is a flowchart showing the encoder clock interwoven subroutine executed in the sewing machine main shaft operation routine of FIGS. 7 and 8. FIG. 10 is a flow chart showing the sewing machine main shaft operation routine of FIGS. 7 and 8. A flowchart showing the encoder origin interwoven subroutine executed in the operation routine ζ, Figure $11, shows the position of the needle bar and the boring knife attached to the needle bar.
FIG. 12 is a diagram showing an example of the relationship, and FIG. 12 is a diagram showing an example of switches provided on the operation panel of FIG. 2. 101, CP, F, 2... ROM16... Working RAM, 4... Microcomputer section, 5...
Operation panel, 6...Paper tape league, 7...Electric film motor, 8...Sewing machine head, ? ...Needle bar, 10...
- Boring scalpel, 11... Needle, 12... Needle position detection sensor, 16... Sewing machine main shaft morph, 14... Rotary encoder, 15... X-axis pulse motor, 1
6...X-axis pulse motor, 17...X-axis pulse motor driver, 18...X-axis pulse motor driver, 1
9...Embroidery frame, SW'1...Start switch, SW2
...stop switch, SW6...switch with offset, SW'4...switch without offset, SW5...
・Tape lead switch, SW6...Data set switch, SW7...Conversion switch, SW8...Needle bar order switch, 5W999. Numeric keypad switch, 5W1
0...Step switch, SWl 1...Set switch. Applicant: Tokai Kogyo Sewing Machine Co., Ltd. Agent: Yoshihito Iizuka Figure 8

Claims (1)

[Claims] 1. A plurality of needle bars are provided for one sewing machine head, and a boring knife is attached to at least one of the needle bars offset from the center of the needle bar, and one needle bar is provided for each head. An automatic embroidery sewing machine with a boring function that performs a sewing operation or a drilling operation by selecting a needle bar, comprising: a determining means for determining the position of the needle bar selected by the head; and a determining means for determining the position of the needle bar selected by the head; An automatic embroidery sewing machine with a boring function, comprising an embroidery frame offset means for offsetting the position of the embroidery frame according to the deviation in the mounting position of the boring knife while the needle bar to which the knife is attached is selected. . 2. The automatic embroidery sewing machine with a boring function according to claim 1, wherein the determining means comprises a needle bar position detection device for detecting the position of the needle bar selected by the head. 3. A plurality of needle bars are provided for one sewing machine head, and a boring knife is attached to at least one of the needle bars offset from the center of the needle bar, and one needle bar is selected per head for sewing operation. Alternatively, in an automatic embroidery sewing machine with a boring function that performs a hole-drilling operation, determining means for determining the position of the needle bar selected by the head, and a needle bar to which the boring knife is attached in the head according to the output of the determining means. is selected, the embroidery frame offset means for offsetting the position of the embroidery frame in accordance with the deviation in the mounting position of the boring knife, and the data indicating the pre-programmed embroidery operation contents are selected. An automatic embroidery sewing machine with a boring function, comprising offset data invalidating means for invalidating offset data for offsetting the position of the embroidery frame according to the deviation. 4. The offset data invalidation means includes a switch for instructing the presence or absence of the offset data, and is configured to perform a process of invalidating the offset data when the switch indicates the presence or absence of the offset data. An automatic embroidery sewing machine with a boring function according to claim 3.