JPH0114335B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an embroidery sewing machine equipped with a boring knife, and in particular to one that can accurately perform offset processing in response to deviations in the mounting position of the boring knife. Regarding.

[Conventional technology]

When attaching the boring knife to the needle bar for making holes in the fabric, as shown in Figure 11,
Unlike the case where the boring knife C is attached to the needle bar B, the attachment position of the boring knife C is generally shifted laterally by a certain distance l with respect to the axis of the needle bar B. 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 is conventionally used in the position data that determines the position of each stitch on the embroidery frame. The data including the amount of offset corresponding to the deviation is stored in an external storage device (for example, paper tape). Specifically, among the position data, this is 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. Data obtained by adding an amount of data corresponding to the direction and size of the deviation is stored in advance, and the direction and size of this deviation can be determined from the stitch position data immediately after switching from the punching operation to the embroidery operation. The data obtained by subtracting the amount of data corresponding to the amount of data is stored in advance.

[Problem that the invention seeks to solve]

However, recent embroidery sewing machines have the ability to enlarge, reduce, rotate, and invert data read from an external storage device, and then execute embroidery operations based on the enlarged, reduced, rotated, and inverted data. It is equipped with functions. For this reason, even the offset amount data, which is originally constant for each embroidery sewing machine, is changed by being enlarged, reduced, rotated, and reversed by this function, making it difficult to accurately correct the offset of the hole punching position. The problem arises that it becomes impossible to do so.

This invention was made in view of the above points,
It is an object of the present invention to provide an embroidery sewing machine that can always accurately correct the offset of a hole drilling position caused by a deviation in the mounting position of a boring knife.

[Means for solving problems]

The outline of the embroidery sewing machine of the present invention will be explained using FIG. An embroidery frame offset means 21 is provided which offsets the position of the embroidery frame in accordance with the deviation in the mounting position of the boring knife while the attached needle bar is selected. 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 in the sewing machine head. Also,
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. As an example, the embroidery frame offset means 21 moves the position of the embroidery frame by an amount corresponding to the deviation l of the attachment position of the boring knife at the beginning of the period in which the needle bar to which the boring knife is attached is selected, By restoring the embroidery hoop position at the end, the embroidery hoop position can be offset during selection of the boring scalpel. Specifically, determining means 2
Based on the output of 0, it is detected that the needle bar selection position has been switched from the position where the sewing needle is attached to the position where the boring knife is attached, and vice versa. , move the embroidery frame to offset it, and return it to its original position to cancel the offset.

Furthermore, according to the present invention, an off-set for offsetting the position of the embroidery frame in accordance with a deviation in the mounting position of the boring knife is included in the data indicating the content of the embroidery operation programmed in advance, which is provided from an external storage device such as a paper tape. If set data is included, offset data invalidating means 22 is provided to invalidate this offset data.

[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 automatically adjusted between the two. Since the embroidery data is offset automatically, there is no need to include offset data in the embroidery data provided from an external storage device such as a paper tape. Therefore, the embroidery frame can always be offset accurately in accordance with the deviation in the mounting position of the boring knife, without being affected by data conversion processing such as enlarging, reducing, reversing, or rotating the embroidery data. .

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

[Embodiment] Hereinafter, an 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 embroidery machine with a boring function according to the present invention, and the entire operation of this embroidery machine is controlled by a microcomputer section 4 including a CPU 1, ROM 2, and working RAM 3. . The operation panel 5 includes various operation switches and the like. The paper tape reader 6 receives tape data recorded on the paper tape (X, which 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. Color change motor 7
is a plurality of needle bars 9 provided in each sewing machine head 8.
By sliding horizontally when changing colors,
A desired needle bar 9 is positioned at a position where an embroidery (or hole punching) operation is to be performed (embroidery operation position). In each sewing machine head 8, one predetermined needle bar 9 out of a plurality of needle bars 9 has a boring knife 1 located at a predetermined distance in a predetermined direction from the axis.
0 is attached, and each of the remaining needle bars 9 is attached with a needle 11 through which thread of a different color is threaded. As an example, this embodiment will be described below assuming that the boring knife 10 is mounted at a position offset by +12 mm from the axis of the needle bar 9 in the Y-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 13 rotates the sewing machine main shaft of the embroidery sewing machine.
The rotary encoder 14 detects the rotation angle of the motor 13. 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 Y-axis direction. Said motor 1
5 and 16 are driven by an X-axis pulse motor driver 17 and a Y-axis pulse motor driver 18, respectively.

An example of the switches provided on the operation panel 5 is shown in FIG. 12. Start switch SW
1 is a switch for rotating the main shaft of the sewing machine, and a stop switch SW2 is a switch for stopping the main shaft of the sewing machine. Switch with offset
SW3 and no offset switch SW4 are switches for instructing whether or not the tape data recorded on the paper tape includes offset amount data for adjusting the position of the embroidery frame 19.
Tape read switch SW5 is a switch for causing paper tape reader 6 to read tape data. Data set switch SW6 is
This is a switch for making final settings for various data before starting embroidery and punching operations.

The conversion switch SW7 enlarges, reduces, and rotates the tape data read by the paper tape reader 6.
This is a switch for performing reversal. The needle bar order switch SW8 is a switch for setting the needle bar switching order according to each color change timing. Numerical key switch SW9 is a switch for inputting various numerical values. Step switch SW10
is a switch for confirming the input of a certain type of numerical value using the numeric keypad switch SW9 and then moving the operation of inputting the same type of numerical value to the next step. The set switch SW11 is operated when registering numerical data input using the numeric key switch SW9.

An example of the embroidery and punching operations performed by this multi-needle embroidery 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 a sewing machine main shaft stop routine. In the sewing machine main shaft stop routine, as shown in FIG. 4, first, the memory contents of the working RAM 3 are cleared in the stop initial routine. Next, it is determined whether or not the tape read switch SW5 of the operation pulse 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 stitch at a time, and sequentially stores the read data in the auxiliary memory in the CPU 1 (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 numerical value inputted by the numeric key switch SW9 is used to select a specific needle bar among the plurality of needle bars 9 of each sewing machine head 8 on which the embroidery (or punching) operation is to be performed first. 9 is registered in working RAM 3 as needle bar order data that specifies needle bar order data (step 10).
8,109). Below, step switch SW10
is entered, the new input value is used as needle bar order data that specifies the needle bar 9 on which the embroidery (or punching) operation should be performed next.
Register in RAM3 (steps 110 and 11)
1,109). If step switch SW10 is not turned on and set switch SW11 is turned on, this registration process ends (steps 110 and 11).
2). As a result, the order of the needle bars 9 in which the embroidery (or punching) operation is to be performed in each sewing machine head 8 between each color change and the next color change is set.

Next, it is determined whether the conversion switch SW7 is turned on (step 113). The switch SW
If 7 is set, numeric key switch SW9
The numerical values input by
Degree of expansion or reduction of Y data (i.e. magnification)
Working as magnification data A for setting
Register in RAM3 (step 114). continue,
At step 115, the registration of the magnification data is completed on the condition that the set switch SW11 is turned on, and the process moves to step 116. Step 11
In step 6, the new input numerical value is registered in the working RAM 3 as rotation angle data θ that determines the rotation angle of the X, Y data. Furthermore, on the condition that the set switch SW11 is turned on, the sixth
Moving on to step 118 in the figure, enter the new input value,
Polarity data B that sets the polarity of the X, Y data
(Input numerical value "0" indicates positive polarity, and input numerical value "1" indicates negative polarity.) Subsequently, when the set switch SW11 is turned on, this registration process ends (step 119). As a result, each X,
Setting of magnification A, rotation angle θ, and polarity B for Y data is completed.

Next, after executing other processes in the sewing machine spindle stop routine, turn the data set switch SW
It is determined whether 6 has already been entered (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).
If the switch SW3 is turned on (that is, if the tape data read by the paper tape reader 6 includes offset amount data), the needle bar to which the needle 11 is attached is selected from among the X and Y data in the auxiliary memory. Immediately after switching from the embroidery operation by 9 to the drilling operation by the needle bar 9 to which the boring knife 10 is attached, the X and Y data of the stitch is determined according to the direction and magnitude of the deviation in the attachment position of the knife 10. Subtract a value. Further, a value corresponding to the direction and magnitude of the deviation in the installation position of the knife 10 is added to the X and Y data of the switch immediately after the switch from the punching operation to the embroidery operation (step 123,
124). That is, in this embodiment, the stitch X, Y immediately after switching to the drilling operation is
Subtract 12mm from the Y data of the data, and then
Add 12mm to the Y data of the data. This removes the offset amount of data from the tape data in the auxiliary memory. Next, the address of the auxiliary memory storing the tape data of the first stitch is designated (step 125). On the other hand,
If the offset switch SW3 is not turned on (that is, if the tape data read from the paper tape reader 6 does not include offset amount data), the process proceeds to step 125 without performing the above adjustment process, and the data is stored in the auxiliary memory. The address is specified.

Next, it is determined whether the start switch SW1 has been turned on (step 126). The switch SW
If 1 is entered, the sewing machine main shaft stop routine is terminated and the routine proceeds to the sewing machine main shaft operation routine.

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 rotating the sewing machine main shaft (step 201).
A predetermined operation initial routine is processed.
Next, various operating processes of the embroidery sewing machine are started (step 202). Then, while determining whether or not the sewing machine spindle stop completion flag has been set and whether or not a color change code instructing a color change has been given (steps 203 and 204), this is done on the condition that both are negative. Continue the driving process.

If a lock 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 the encoder clock interrupt subroutine as shown in FIG.

In the encoder clock interrupt subroutine, after incrementing the encoder counter by one (step 301), it is sequentially determined which processing timing the count value corresponds to (steps 302 and 308), and each timing is Perform processing accordingly. 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 304), the magnification data A in the working RAM 3,
Based on the rotation angle data θ and polarity data B, arithmetic processing is performed to enlarge, reduce, rotate, and reverse the X and Y data in the tape data (step 305). Then, the resulting data X′,
Based on Y', the X-axis pulse motor 15 and the Y-axis pulse motor 16 move the embroidery frame 19 in the
They are moved in the axial direction (step 306).

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

Furthermore, 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 interrupt 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 performs the embroidery (or punching) operation using the needle bar 9 in the first order.

During this embroidery (or punching) operation, if it is confirmed that the color change code is included in the read function data (step 20
4. FIG. 7) The sewing machine main shaft stop request flag is set and the stop counter is set to, for example, "2" (step 205), and the sewing machine main shaft motor 13 is decelerated (step 206). Then, at each sewing machine spindle stop timing in the encoder clock interrupt subroutine, the stop counter is counted down one by one and it is determined whether the count value has reached zero (step 3).
08-311), when the count value reaches zero, the sewing machine main shaft motor 13 is stopped and a sewing machine main shaft stop completion flag is set (step 312).
Next, after confirming the setting of this stop completion flag and confirming the existence of the color change code (steps 203 and 207 in FIG. 7), the needle bar sequence data in the working RAM 3 is followed as shown in FIG. The needle bar 9 in the next order is slid to the embroidery operation position by the color change motor 7 (step 208). continue,
It is determined 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, based on the detection result of the needle position detection sensor 12 (step 209). If the needle bar 9 has a boring knife 10 attached to it, the embroidery frame 19 is moved by the motors 15 and 16 in the same direction as the displacement of the attachment position of the knife 10 and by the same magnitude as the displacement. 210). That is, according to the above example, each embroidery frame 19 is moved by plus 12 mm in the Y-axis direction by the motor 16. If the currently selected needle bar 9 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
It is determined whether or not this is the needle bar 9 to which the boring knife 10 is attached, based on the detection result of the needle position detection sensor 12 (step 211). bowling scalpel 1
If there is a needle bar 9 with 0 attached, each embroidery frame 19 is moved by the motors 15 and 16 in the opposite direction to the attachment 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 mm in the negative direction of the Y-axis by the motor 16. On the other hand, if the needle bar 9 that has been selected just before is not the needle bar 9 to which the boring knife 10 is attached, the answer in step 211 is NO, and the process of moving the embroidery frame 19 in step 212 is not performed. 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 accurately performed in accordance with the deviation in the attachment position of the knife 10.

Next, the process returns to the first step of the sewing machine main shaft operation routine to restart the sewing machine main shaft operation (step 201), and thereafter, the embroidery (or hole punching) operation using this new needle bar 9 is performed in the same manner as described above. If the existence of a color change code is confirmed during this operation, the needle bar 9 switching process and the position adjustment process of the embroidery frame 19 are performed again in the same manner as described above.

In this way, the embroidery (or drilling) operation using each needle bar 9 is sequentially performed while accurately correcting the offset of the drilling position caused by the misalignment of the mounting position of the boring knife 10 by adjusting the position of the embroidery frame 19. Can be running.

In this embodiment, whether or not the tape data read by the paper tape reader 6 includes offset amount data for adjusting the position of the embroidery frame 19 is determined based on the operation status of the offset switch SW3 on the operation panel 5. After making a judgment, if the offset amount data is included, it is equipped with a function to remove the offset amount data, but it is possible to use only tape data that does not include such offset amount data. When performing an embroidery operation, this function may not be provided.

Furthermore, in this embodiment, a case has been described in which the boring knife is installed at a position offset by +12 mm from the axis of the needle bar 9 in the Y-axis direction of the embroidery frame 19. It may be arbitrary in terms of direction and distance. In that case, in the program executed by the microcomputer section 4, steps 123 and 1 in FIG.
The numerical values and coordinate directions of the offset correction data used in steps 24 and 210 and 212 in FIG. 8 may be set to correspond to an arbitrary deviation. Further, the steps 123, 124, 21
Instead of setting the data for offset processing used in 0, 212 in advance in the program, a switch for setting this data is provided on the operation panel 5, and this data can be freely changed using the switch. You can do it like this.

〔Effect of the invention〕

As described above, according to the automatic embroidery sewing machine with a boring function according to the present invention, the position of the embroidery frame can always be accurately adjusted in accordance with the deviation in the installation position of the boring knife. It is possible to always accurately correct the offset of the drilling position caused by.

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. Even in this case, the offset of the drilling position can be corrected accurately.

[Brief explanation of drawings]

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. 3 to 10 are as shown in FIG. FIG. 3 is a main flowchart, and FIGS. 4 to 6 are flowcharts showing an example of a program executed by the microcomputer section of FIG. 7 and 8 are flowcharts showing the sewing machine main shaft operation routine in the main flowchart of Fig. 3, and Fig. 9 is a flowchart showing the sewing machine main shaft operation routine in the main flowchart of Fig. 7 and 8. Flowchart showing the encoder clock interrupt subroutine executed, No. 10.
The figure is a flowchart showing the encoder origin interrupt subroutine executed in the sewing machine main shaft operation routine of Figures 7 and 8, and Figure 11 shows the positional relationship between the needle bar and the boring knife attached to the needle bar. FIG. 12 is a diagram showing an example of a switch provided on the operation panel of FIG. 2. 1...CPU, 2...ROM, 3...Working
RAM, 4...Microcomputer section, 5...
Operation panel, 6... Paper tape reader, 7... Color change motor, 8... Sewing machine head, 9... Needle bar, 10
... Boring knife, 11 ... Needle, 12 ... Needle position detection sensor, 13 ... Sewing machine main shaft motor, 1
4...Rotary encoder, 15...X-axis pulse motor, 16...Y-axis pulse motor, 17...
X-axis pulse motor driver, 18...Y-axis pulse motor driver, 19...Embroidery frame, SW1...Start switch, SW2...Stop switch, SW3...
...Switch with offset, SW4...Switch without offset, SW5...Tape lead switch,
SW6...Data set switch, SW7...Conversion switch, SW8...Needle bar order switch, SW
9...Ten key switch, SW10...Step switch, SW11...Set switch.

Claims (1)

[Scope of Claims] 1. A plurality of needle bars are provided for one sewing machine head, 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 for each head. An automatic embroidery sewing machine with a boring function that performs sewing or drilling operations includes a determination means for determining the position of the needle bar selected by the head; and a determination means for determining the position of the needle bar selected by the head; An automatic embroidery sewing machine with a boring function, comprising 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 mounted needle bar 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 that detects the position of the needle bar selected by the head. 3 A plurality of needle bars are provided for one sewing machine head, 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 one needle bar for sewing operation or drilling. In an automatic embroidery sewing machine with a boring function that performs the operation, a determination means for determining the position of the needle bar selected by the head, and a needle bar to which the boring knife is attached is selected by the head according to the output of the determination means. embroidery frame offset means for offsetting the position of the embroidery frame according to the deviation in the mounting position of the boring scalpel; 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 accordingly. 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.