JPS6187580A - Sewing machine with calculation mode - 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 Technical Field The present invention relates to a sewing machine equipped with an arithmetic function for calculating numerical values.

BACKGROUND OF THE INVENTION In order to input the pattern number -υ corresponding to each of a large number of patterns, there is a numeric key on the operating car, a display that visually displays the input pattern number, and various types of sewing machines. A sewing machine is conventionally known that is equipped with a plurality of designation gears that can be operated to designate the operation of the sewing machine, and is configured to form a pattern corresponding to the input pattern number.

Such a sewing machine has a feature that a desired pattern can be formed by a specified operation by operating the number keys and the designation key while viewing the display on the display.

Problems to be Solved by the Invention However, when using such a sewing machine, it is often necessary to know the total number of patterns, area, etc. when performing sewing work. It is necessary to calculate the length, area, etc. based on the unit dimensions of the pattern, but conventional sewing machines were not equipped with arithmetic functions to perform such calculations. Therefore, conventionally, those −
Whenever it was necessary to calculate areas, areas, etc., it was necessary to prepare a calculator each time, which was extremely troublesome.

Means for Solving the Problems The present invention has been made in view of the above circumstances, and its gist is to provide the above-mentioned number keys, seven displays, and a plurality of Press the specified key (A: to form the pattern of the input pattern number) on the sewing machine, and press (8).
) The sewing machine's 'fist' mode is operated between the normal mode in which half a pattern can be input and displayed, and 19 patterns can be formed, and the 'A calculation mode in which various calculations can be performed on numerical values input using the numeric keys. a switching means for switching the mode;
By that switching means? ,′? While the i-arithmetic mode is set, the type of calculation to be performed on the numerical value input by the numeric key is specified by the operation of the plurality of designation keys; and (C) the calculation by the switching means. The present invention further includes display control means for displaying the calculation result by the calculation means on the display while the mode is set.

Functions and Effects In this manner, by setting the sewing machine operation mode to the normal mode using the switching means, a desired pattern can be automatically formed according to the input pattern number, as in the conventional sewing machine. In addition, if the sewing machine operation mode is switched to -t by calculation using the switching means, the type of calculation specified by the designated key (-) will be used to calculate the numerical value entered by the numeric key, so the total number of patterns will be calculated. It is now possible to calculate lengths, areas, etc., and there is no need to prepare a calculator every time you perform a calculation.Furthermore, the numeric keys, designation keys, display, etc. are shared in both modes, so the configuration itself is easy to use. It's easy and cheap.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIG. 3, a footnote part 12 is erected on the bed 10, and an upper arm part 1G having a head 14 at one end is supported horizontally and cantilevered by the pillar part 12. At the bottom of the head 14 are a needle bar 18 that is reciprocated in the vertical direction in synchronization with the rotation of a sewing machine main shaft (not shown), and a presser foot 20 that is operated by the operator to a raised position and a lowered position.
Further, a feed dog 22 is provided near the needle drop point on the bed portion 10. The needle bar 1B is driven laterally by a needle swing actuator 24, which will be described later, and the feed amount and direction of the feed dog 22 can be changed by a feed actuator 26, which will be described later. . The sewing needle fixed to the needle bar 18 and the feed dog 22 work together to form a desired pattern on the work cloth.

The head 14 is provided with a start/stop push button 28 that starts or stops the sewing machine each time it is pressed, and a pattern display section 30 is provided on the front of the upper arm section 1G to display patterns that can be sewn. A figure and a two-digit pattern are displayed (both not shown).

On the other hand, a memory mounting section (not shown) is provided on the side surface of the pillar section 12, and a memory cassette containing an external memory 32, which will be described later, is removably mounted therein.

Furthermore, an operating section 36 is provided on the front surface of the pillar section 12.

As shown in detail in FIG. 2, the operation unit 36 is provided with an eight-digit numerical display 38 consisting of the topmost part LED, etc., and inputted by an input key 44, which will be described later. The numerical values and calculation results are displayed in the calculation mode. Further, below the number display 38, there is a function key (hereinafter simply referred to as the FUN key) 40 as a switching means for selectively switching the sewing machine operation mode between the normal mode and the calculation mode for each press. A mode display LED 42 is provided which indicates that the sewing machine is in the normal mode by turning off the light and by lighting it up to indicate that the sewing machine is in the calculation mode.

In the center of the operation unit 36, there are a plurality of input keys 44 as numeric keys with numbers 04 to 9 engraved on the left side.
and a combination key 46 engraved with a "+" symbol, which is pressed when specifying several patterns in succession in the normal mode - and when specifying addition in the calculation mode; A clear key 48 is provided for canceling the operation of the input key 44 in both calculation modes. Also, right of those keys + ll
++ For ray minutes, program start/stop keys 50゜i, Satui Vl 1 effect setting keys 52. A capsule key/needle swing amount designation key 58 is provided. The program start/stop key 50 is engraved with [-4] on its surface, and in the normal mode, it selectively specifies the start and end of the input when setting the program for each suppression operation, and in the calculation mode. specifies subtraction. Continuous sewing designation key 52
has an "x-1" symbol engraved on its surface, and in the jJ1 normal mode, a single pattern j (alternatively designating 4-way stitching or continuous stitching, /ii.iW mode, 1 (specifies I calculation.

The capsule key 56 has a "÷" symbol engraved on its surface, and in the normal mode, each press operation selectively selects the external memory 32 and the internal memory in the central control device 86, which will be described later. , specifies division in operation mode. In addition, the t1 swing early designation ghee 58 has "-" on its surface.
'' symbol is engraved, and the amount of swing of the needle bar 18 can be set to an amount corresponding to when one sewing needle is attached and when two sewing needles are attached during the suppression operation in the mode ε. This designation instructs execution of the four arithmetic aI calculations in the calculation mode.

Note that the continuous sewing designation key 52, capsule key 56, and feeding swing designation key 58 are equipped with LEDs 6Q. 62 and 64 are provided correspondingly, respectively, and these LEDs 60.

By lighting 62 and 64 in the normal mode, the continuous sewing state, the external memory selection state, and the two-head oscillation amount designation state are respectively displayed.

A needle position adjustment knob 66 is provided at the bottom of the operation section 36.

Feed adjustment knob 68 and sewing machine motor speed adjustment knob 7
0 is placed. The needle position adjustment knob 66 is for manually adjusting the amount of needle oscillation of the sewing needle.
Its manual operation is performed using the manual switch key 72 in normal mode.
It is activated when L E D74 is turned on by the masterpiece. In addition, the manual switching key 72 has a decimal point symbol “・
" is engraved on it, and this key 7 is engraved in the calculation mode.
By pressing 2, the decimal point position of the numerical value input using the input key 44 is determined. The feed adjustment knob 68 is used to manually adjust the feed amount of the work cloth, and this operation is performed by operating the manual switching key 76 in the normal mode.
When D78 is lit, it is changed to "J". In addition, this manual 9J conversion gear 7G is also engraved with the lrfJ record, and when this key 76 is pressed in the 6ij calculation mode ■, 1, it is displayed on the numeric display 38. An operation to find the square root of a number is executed.

The sewing machine motor speed adjustment knob 70 is used to adjust the rotational speed of a sewing machine motor 80, which will be described later, that drives the main shaft of the sewing machine. The sewing machine motor speed adjustment knob 70 is connected to a motor drive circuit 82 that drives the sewing machine motor 80.
The hook position adjustment knob 6 is provided as a part of the
6 and the feed adjustment knob 68 are provided as part of a manual adjustment circuit 84, which will be described later.

The sewing machine constructed as described above is equipped with a control circuit shown in FIG. Zunawara, in Figure 1, 86
is a central control unit mainly composed of a microcomputer, and includes the start/stop button flD28 and the FUN key 40. input key 44
, the master signal from various designated keys including the addition key 46 are supplied to this central control unit 86. Further, signals representing the operation amounts of the needle position adjustment knob 66 and the feed adjustment knob 68 provided in the operation section 36 are converted into digital signals by an A/D converter provided in the manual adjustment circuit 84, and then the central control A device 86 is provided. In addition, the above image adjustment knob 6
Each of the 6.68 manipulated variables is detected as a change in the resistance value of the variable resistor.

Furthermore, the pattern data stored in the external memory 32 is supplied to the central controller 86 from the external memory 32 connected via the connector 88, and the sewing machine is supplied with the pattern data stored in the external memory 32 from the timing signal generator 90. Timing and signals synchronized with the rotation of the main shaft are supplied, and the motor drive circuit 82 also supplies an operating signal representing the operating state. Further, a pattern number memory 92 is connected to the central controller 86, and a pattern number memory 92 is connected to the central controller 86.
When the calculation mode is specified by the UN key 40, the pattern number selected in the previous normal mode or the pattern number 1. a
It is now possible to do so.

Then, the central control device 86 temporarily records the pattern data stored in the internal memory provided therein, the pattern data stored in the external memory 32, and the pattern half-moon in the pattern number memory 92 (1.1).
While using the timing signal from the timing signal generator 90 and the operation signal from the motor drive circuit 82 as necessary, It processes various operation signals and outputs various status display signals, actuate control signals, mork control signals, and numeric display signals obtained as a result of the signal processing, and outputs each L P and D provided in the operation section 3G, respectively. IF, D group 94, actuator drive circuit 96, morph drive circuit 82 on and supplied to display control circuit 98.

Each LED in the LED group 94 lights up in response to a status display signal corresponding to λ1, and the lighting indicates the calculation mode state, the external memory selection state in the 2 normal mode, the continuous sewing state, etc. as described above. Display each status.

The actuator drive circuit 96 sends a drive signal to the needle swing actuator 2 according to the content of the actuator control signal.
4 and feed actuator 26, respectively, and cause actuators 24 and 26 to drive needle bar 18 and feed dog 22 as described above. The actuator control signal consists of a signal for controlling the needle swing actuator 24 and a signal for controlling the feed actuator 26, each of which is supplied in synchronization with the timing signal from the timing signal generator 90. There is.

While the morph control signal is being supplied, the motor drive circuit 82 supplies the sewing machine motor 80 with a drive signal corresponding to the speed adjusted by the sewing machine morph speed adjustment knob 70, and drives the sewing machine motor 80 at the adjusted speed. Also, as described above, while outputting the drive signal, the drive signal is supplied to the central controller 86. The display control circuit 98 includes a multiplexer and outputs a numeric display signal S representing a two-digit pattern number.
MN and a numeric display signal SNC representing an 8-digit calculated value are selectively selected in response to a display switching signal DSL from the central controller 86, and are supplied to the numeric display 38 for display. . That is, when the central control unit 86 is in the normal mode, a two-digit pattern number is displayed, and when it is in the calculation mode, an eight-digit calculation number (1η) is displayed on the number display 38.

Next, the operation of the central control device 86 will be explained based on FIG. The central controller 86 is configured such that when the power is turned on, the sewing machine operation mode is automatically set to the normal mode.

When the power is turned on and the program starts, step S1 is first executed, and it is determined whether or not the FUN key 40 has been pressed. If the result of the determination is negative, the sewing machine control routine in the normal mode is executed at the stem knob S2. That is, in step S2, the number input using the input key 44 is 2.
It is used to designate a digit pattern number, and a numeric display signal SMN is supplied to the numeric display 38 via a display control circuit 98, and the two-digit pattern number represented by the numeric display signal SMN is displayed. Further, the combination key 46 of the operation section 36. Clear key 48. Program start/stop key 50.
Continuous sewing designation key 52. Capsule key 56. When a designated key such as the needle swing amount designation key 582 or the manual switching keys 72 and 76 is pressed, the sewing machine operates in accordance with the normal mode based on the pressed manipulation.

Further, when the start/stop pusher 8T] 2B is pressed, the sewing machine motor 80 is started and stopped in accordance with the pressing operation, and a hair actuator control signal is supplied to the actuator drive circuit 96, and the needle swing actuator 24 Then, the feed actuator 26 is driven to form a specified pattern on the work cloth. This sewing machine control routine in step S2 is repeated until the determination result in step S1 becomes affirmative.

On the other hand, if the determination result in step S1 is affirmative, step S3 is subsequently executed, and it is determined whether or not the pressing operation of the F and UN keys 40 confirmed in step S1 is the second pressing operation. The bow is severed. Zunawaji, it is important to know which mode the sewing machine is in when the pressing operation is performed, and if the pressing operation is performed in the "normal mode", the first pressing operation is performed. If the pressing operation is determined to be a suppression operation, step S4 is executed, or if the pressing operation is performed in the calculation mode, it is determined to be the second pressing operation and step S5 is executed.

In step S4, which is executed when it is determined that the FUN key 4o has been pressed in the normal mode state,
Based on the supply state of the operating signal from the motor drive circuit 82, it is determined whether the sewing machine is operating. If it is determined in step S4 that the vehicle is not in operation, step s6 is immediately executed to save the pattern state in the normal mode, and if it is determined that the pattern is in operation, step S7 is executed. After the driving of the sewing machine motor 80 is stopped, step S6 is executed, and the pattern state in the normal mode is similarly saved. This causes the sewing machine operating mode of the central controller 86 to be switched from the normal mode to the calculation mode.

At this time, the display control circuit 9B receives an 8-digit numerical display signal SN.
A display switching signal DSL for selecting C is supplied, and the display of the pattern number on the third day number display is also stopped. Here, saving the pattern state in step S6 means that the pattern signal corresponding to the pattern selected in the normal mode immediately before switching to the calculation mode is temporarily stored in the pattern number memory 92, and the pattern status is returned to the normal mode again. It tells you to be prepared when something happens.

When the sewing machine operation mode is switched to the calculation mode in step S6, a predetermined calculation is performed in the calculation routine of the subsequent step S8. That is, in this step S8, the numbers input by the input key 44 designate the numerical values for calculation, and the number display signal SNC is supplied to the number display 38 via the display control circuit 98.
The numerical value represented by the numerical display signal SNC is displayed up to eight digits at most. Further, the combination key 46 of the operation section 36, the program start/stop key 50. Continuous sewing designation key 52, capsule key 56. Swing flea designation key 58.

When the manual switching keys 72 and 7G are pressed, operations corresponding to the calculation mode are performed based on the pressing operations, various calculations are performed, and the calculation results are displayed on the numerical display. 38.

In step S9, which is executed following step S8, it is determined whether or not a switch (shell) related to the drive (operation) of the sewing machine, such as the start/stop stamp 28, has been operated, and if the answer is negative, step s1 is executed again. Further, if the answer is affirmative, step SIO is executed and an alarm is generated by an alarm device (not shown), and then step S1 is executed.
is executed. Note that all masterpieces confirmed in step S9 are invalidated.

On the other hand, in step S5, which is executed when it is determined in step S3 that the pressing operation of the FUN key 40 is the second time, the pattern state in the normal mode that was evacuated in step S6 is restored, Thereafter, the sewing machine control routine 1i'l-chin in step S2 is executed. That is, by reading out the pattern number stored in the pattern number memory 92 in step S6, the pattern number immediately before switching to the calculation mode is displayed on the number display 38 again. Therefore, when the sewing machine motor 80 is started by pressing the start/stop push button 28, a pattern is formed on the work cloth based on the setting state in the normal mode before switching to the calculation mode.

As explained above, according to this embodiment, the FUN key 4
By pressing 0, it is possible to perform calculations such as four arithmetic calculations, so it is possible to easily calculate the length and area of the total number of patterns to be formed on the fabric without using a calculator etc. becomes. In addition, the input key used for calculation
44, various designated keys, or numeric display 38, etc.
Since it is also used for forming patterns on work cloth, the structure is simple and economically advantageous.

Moreover, in this embodiment, the pattern state in the normal mode is temporarily saved when switching from the normal mode to the calculation mode, and the normal pattern state that was saved when switching from the normal mode ξ to the 'eX calculation mode The state in the mode is automatically restored, and if switching to the calculation mode is performed while the sewing machine motor 80 is being driven, the sewing machine motor 80 is automatically stopped. Therefore, the calculation can be performed immediately if necessary, and when the calculation is completed, sewing can be continued immediately under the conditions set before the calculation. In addition, in this embodiment, the pattern number that was displayed before calculation is automatically displayed on the number display board 38'' at the same time as the normal mode returns, so that it is possible to know which pattern will be formed next. Another advantage is that it can be checked immediately.

Note that, as is clear from the above description, in this embodiment, a part of the central control device 86 is used as the calculation means. Further, the display control circuit 98 and the pattern number memory 92 constitute a display control means.

Although one embodiment of the present invention has been described above, this is literally an illustration, and the present invention should not be construed as being limited to this specific example.

For example, in the embodiment described above, a dedicated FUN key 40 was provided as a switching means for switching the sewing machine operation mode, but it is not possible to simultaneously press the input key 40 or two of the various designated keys. It is also possible to switch the sewing machine operation mode by.

Further, in the above embodiment, the calculations that can be executed in the calculation mode are the four arithmetic calculations and the root calculation, but it is also possible to provide other calculation functions such as square calculation, and the number of digits displayed on the numeric display 38 can also be changed. It does not necessarily have to be 8 digits.

In addition, in the embodiment described above, when calculating the length and area of the total number of patterns, or when it is necessary to form a pattern with desired dimensions based on these calculations, the needle position adjustment knob 66 and the feed adjustment knob are used. If the dimensions of the pattern have been changed from the standard dimensions due to 68, or if you plan to change them in the future, you will need to try it out and check the dimensions of each pattern. In order to do this, a pattern dimension display function has been added, and the dimensions (width, height) changed according to the adjustment knob 66.08 can be displayed on the numerical display by pressing the specified key. 3
It is also possible to display it in 8"2.

Further, in the above embodiment, the operating section 36 was integrated with the sewing machine main body, but the interworking section 3G is configured to be removable from the sewing machine main body, and the operating section 36 is equipped with a computer f.
It is also possible to incorporate the microcomputer, controller, and battery that control the sewing machine so that calculations can be performed on the operating section 36 that is detached from the sewing machine main body. If it is detached from the main body, the key input operation becomes a knot qr, and operability during calculation can be improved.

However, in this case, it is necessary to provide a switch that detects separation of the operating section 36 from the sewing machine body, and to automatically switch the mode of the operating section 36 to the calculation mode in accordance with the operation of this switch. desirable.

In addition, although not listed, various modifications may be made without departing from the spirit of the present invention.

Of course, the present invention can be implemented in a modified form.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a control circuit provided in the sewing machine of FIG. 3, FIG. 2 is an enlarged view of the operating section of the sewing machine of FIG. 3, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a flowchart for explaining the operation of the control circuit shown in FIG. 1. FIG. 38 Two-digit display 40: Function key (switching means) 44: Input key
(number key)

Claims (2)

[Claims] (1) A number key that can be operated to input the pattern number corresponding to each of a large number of patterns, a display that visually displays the input pattern number, and a display that can be used to specify various operations of the sewing machine. A sewing machine is provided with a plurality of operable designation keys and forms a pattern according to the input pattern number, the sewing machine having a normal mode in which input of the pattern number, display thereof, and pattern formation are possible, and a number key. a switching means for switching the sewing machine operation mode between a calculation mode in which various calculations can be performed on numerical values inputted by the numeric value entered by the numeric keys; a calculation means in which the type of calculation to be performed on the numerical value is designated by operating the plurality of designation keys; and while the calculation mode is set by the switching means, the calculation result by the calculation means is displayed on the display. A sewing machine having a calculation mode, characterized in that it includes a display control means. (2) The display control means has a memory that temporarily stores the pattern number displayed on the display immediately before the switching from the normal mode to the calculation mode, and 2. The sewing machine having a calculation mode according to claim 1, wherein the pattern number in the memory is displayed on the display in connection with switching to the sewing machine.