JP2563139Y2 - Automatic sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention [Industrial Application Field] The present invention relates to an automatic sewing machine having a function of setting the number of stitches in each step of a selected sewing pattern and displaying the number of stitches.

[Prior Art] Conventionally, an automatic sewing machine for automatically sewing a selected sewing pattern has been known. In this automatic sewing machine, a sewing pattern to be sewn is selected by a pattern selection switch 10 to 13 provided on an operation panel unit 9 as shown in FIG. 7, and the number of stitches in each step for forming the selected sewing pattern is reduced. The number of stitches is set to be increased or decreased by the stitch number setting switches 22 to 29. Here the pattern selection switch 10
13 shows a sewing pattern, and letters of alphabets A to F on the sewing pattern indicate respective steps of forming the sewing pattern. The letters indicating these steps correspond to the letters A to F provided below and above the stitch number display sections 18 to 21, respectively, and the number of stitches in each step is indicated by each of the display sections 18 to 21. Will be displayed. For example, the pattern selection switch 10
When the fixed stitch pattern at the start of sewing is selected by the step A, the step A set by the stitch number setting switches 22 and 26
The number of stitches is displayed on the display unit 18 and the number of stitches in step B set by the stitch number setting switches 23 and 27 is displayed on the display unit 19.
Similarly, when the stop sewing pattern at the end of sewing is selected by the pattern selection switch 11, the number of stitches in step C is displayed on the display unit 20, and the number of stitches in step D is displayed on the display unit 21, respectively.
When a sewing pattern for performing a so-called naming operation or the like is selected by the pattern selection switch 13, the number of stitches in step E is displayed on the display units 20 and 21, and the number of stitches in step F is displayed on the display units 18 and 19. Each is displayed as a two-digit number. Here, the sewing pattern shown in FIG. 8 shows a pattern when front and rear stop sewing is performed using the pattern selection switches 10 and 11, and the number of stitches in each of the processes 50a to 50d is indicated by the display unit 18 to 50. 21 respectively.

[Problems to be solved by the invention] However, the following problems have been considered in the conventional automatic sewing machine.

That is, when the sewing operation such as the naming shown in FIG. 9 is performed by using the pattern selection switch 13 after performing the above-mentioned front and rear stop sewing operation,
The number of stitches of e and 51f are displayed on the display units 18 to 21 respectively (FIG. 10). If the number of stitches in each of these steps is a two-digit number, the display state at the time of front and rear stop sewing is shown. Since no distinction is shown, there is a possibility that the number of stitches may be illusioned. For this reason, the problem of setting an incorrect number of stitches was considered. To solve this problem, the display 18
It is also conceivable to turn on the letters A to F provided below and above 21 to correspond to the pattern selection switches 10 to 13, but this complicates the construction and increases the cost. Inviting the problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic sewing machine that solves the above-described problem and can easily and clearly determine the number of displayed stitches in which process.

[Means for Solving the Problems] In order to solve the above problems, the automatic sewing machine of the present invention
As illustrated in FIG. 1 in connection with a manual operation, a pattern selecting means for selecting an arbitrary sewing pattern from among a plurality of sewing patterns including stop sewing, and When a fixed stitch pattern is selected, a first display section for individually displaying the number of stitches of each step related to the fixed stitch at the beginning of the sewing among the steps for forming the fixed stitch pattern, and a manual operation related to the manual operation The first stitch number setting means for setting the number of stitches of each step displayed on the first display section, and the first display section are formed separately, and the stop is performed by the pattern selecting means. When a sewing pattern is selected, a second display unit for individually displaying the number of stitches of each step related to the stop stitching at the end of the stitching by numerically among the respective steps for forming the same stitching pattern;
A second stitch number setting unit configured to be separate from the first stitch number setting unit and for setting a stitch number of each step displayed on the second display unit in association with a manual operation; In the automatic sewing machine provided, the plurality of sewing patterns include a sewing pattern including a plurality of steps in which the number of stitches can be individually set as a sewing pattern other than the fixed sewing, and the sewing pattern other than the fixed sewing pattern is selected by the pattern selecting unit. When the sewing pattern is selected, the process name of the sewing pattern is displayed on the first display unit or the second display unit with a symbol other than a numeral, and the number of stitches in the process is displayed on the second display unit or the first display unit.
When a sewing pattern other than the stitch pattern is selected by the pattern selection means by the display function switching means for displaying a number on the display unit, the first stitch number setting means or the second stitch number setting means is manually operated. And setting function switching means for functioning as a step changing means for changing a step name displayed on the first display section or the second display section.

[Operation] In the automatic sewing machine of the present invention configured as described above, an arbitrary sewing pattern can be selected from a plurality of sewing patterns including stop sewing by manually operating the pattern selecting means. When the fixed stitch pattern is selected by the pattern selecting means, the first display unit displays the number of stitches of each step related to the fixed stitch at the beginning of sewing among the respective steps of forming the fixed stitch pattern by a number. I do. At this time, the second display unit formed separately from the first display unit indicates the number of stitches in each step related to the stop stitching at the end of sewing among the steps forming the same stitch pattern. To display. For this reason, the number of stitches in each step related to the stop sewing at the start of sewing and the number of stitches in each step related to the stop sewing at the end of sewing can be simultaneously determined at a glance.

Further, when the stitching pattern is selected, the first stitch number setting means or the second stitch number setting means separately formed from each other is manually operated, so that the first display section or the second display section is displayed. The number of stitches displayed for each process can be set individually.

Here, the number of stitches at the beginning of sewing and the end of sewing are similar to each other, and when both are displayed by switching a switch or the like using the same display section, the number of stitches at the beginning of sewing and the number of stitches at the end of sewing are displayed. You may have an illusion of a number. in this case,
The desired sewing product cannot be obtained. On the other hand, in the present invention, the number of stitches at the start of sewing and the number of stitches at the end of sewing are displayed on the display units separately formed from each other, and the number of stitches formed separately from each other is displayed. Since the number of stitches can be set by the setting means, such an illusion can be prevented.

On the other hand, the present invention includes a sewing pattern including a plurality of steps in which the number of stitches can be individually set as a sewing pattern other than the stop sewing. When a sewing pattern other than the fixed stitching pattern is selected by the sewing pattern selecting means, the display functions of the respective display sections are switched by the display function switching means as follows. That is, the first display unit (or the second display unit) displays the process name of the sewing pattern with a symbol other than a numeral, and the second display unit (or the first display unit) displays the number of stitches of the process with a numeral. Will be displayed.

When a sewing pattern other than the stitching pattern is selected, the setting function of the first stitch number setting means (or the second stitch number setting means) is switched by the setting function switching means as follows. That is, the first stitch number setting means (or the second stitch number setting means) is a step changing means for changing the step name displayed on the first display section (or the second display section) in association with the manual operation. Will function as
In this case, the process name displayed on the first display unit (or the second display unit) can be changed by manually operating the first stitch number setting unit (or the second stitch number setting unit). Then, in response to the change of the process name, the second display unit (or the first display unit) displays the number of stitches of the process after the change by a numeral. At this time, if the second stitch number setting means (or the first stitch number setting means) is manually operated, the number of stitches displayed on the second display section (or the first display section), that is, the first display section ( Alternatively, the number of stitches of the process displayed on the second display unit) can be individually set.

For this reason, in the present invention, it is not necessary to provide a display unit for displaying the process name or a means for changing the process name, and the members used for the display and setting of the fastening pattern are used as they are. The display and setting relating to the process name of another sewing pattern and the number of stitches in the process can be performed. Further, the first display unit (or the second display unit) displays the process name with a symbol other than a numeral. For this reason, it is obvious at a glance whether the display unit displays the number of stitches or the process name of the sewing pattern. That is, when the process name is displayed by a number, the number may be illusioned with the number of stitches of the stitching pattern. In the present invention, such a situation can be avoided.

Therefore, in the present invention, it is possible to satisfactorily prevent an illusion of data displayed on each display unit from performing an undesired sewing, and to display a display unit or a process name for displaying a process name. It is not necessary to newly provide a means for changing the parameter.

Embodiment Next, a preferred embodiment for further clarifying the configuration of the automatic sewing machine of the present invention will be described with reference to the drawings.

As shown in FIG. 2, on the table 1, a sewing machine main body 2 is arranged. A pulley 3 fixed axially rearward (rightward in FIG. 2) of a sewing machine main shaft (not shown) of the main body 2 is connected to a motor 4 arranged below the table 1 via a belt (not shown). The pulley 3 has a built-in needle position detecting device 6 for detecting the rotational phase of the main shaft corresponding to the vertical position of the needle 5 of the sewing machine. The motor 4 is driven and controlled by an electronic control device, which will be described later, incorporated in the control box 8 in connection with the front, rear, and release operations of the foot pedal 7 below the table 1.
An operation panel 9 shown in FIG.
Is provided. The operation panel 9 includes pattern selection switches 10 to 13 as pattern selection means for selecting a sewing pattern to be sewn,
A display unit 18 to 21 for displaying the number of stitches of each step forming the sewing pattern selected by 10 to 13, a stitch number setting as a stitch number setting unit for incrementing or decrementing each time the number of stitches of each step is pressed down Switches 22 to 29,
Etc. are provided. The selection switches 10 to 13 are
When turned on, each LED lamp 10a to 13a is turned on. The power lamp 30 is turned on when a power switch (not shown) is turned on. The patterns on the pattern selection switches 10 to 13 are the same as those described in the section of [Prior Art], and the letters of the alphabet in the steps A to D correspond to the letters of the alphabet above the display units 18 to 21. Yes, it is.

As shown in FIG. 4, an electronic control device 40 as a control means built in the control box 8 is a known device.
The CPU 40a, the ROM 40b, and the RAM 40c are mainly used, and the input interface 40d and the output interface 40e are connected to the bus 40.
They are connected to each other by f, and are configured as a logic operation circuit including a motor drive circuit 40g, a display drive circuit 40h, a solenoid drive circuit 40i, and the like.

The needle interface detecting device 6, the pattern selection switches 10 to 13, the needle number setting switches 22 to 29, the start switch 41, and the thread cutting switch 42 are connected to the input interface 40d. Start switch 41
Is turned on when the pedal 7 is depressed forward, and generates a start signal of the sewing machine. The thread trimming switch 42 is turned on when the pedal 7 is depressed rearward, and the thread trimming signal is turned on. Is to occur. These two
The two switches 41 and 42 are built in the control box 8.

The output interface 40e has a motor drive circuit 4
The display unit 18 through the display unit 21 through the display driving circuit 40h, the reverse rotation solenoid 43, and the thread cutting solenoid 44 through the solenoid driving circuit 40i are connected to the motor 4 via a display driving circuit 40g, respectively. The reverse rotation solenoid 43 is used for reversing the feed direction of the work cloth when performing so-called reverse stitching. The thread trimming solenoid 44 is used when a known thread trimming device (not shown) is operated to perform thread trimming. What is used.

The operation of the present embodiment having the above configuration will be described together with the "number of stitches display processing routine" shown in FIG. This “number of stitches display processing routine” includes only the processing of displaying the number of stitches of each step of forming each sewing pattern selected by the pattern selection switches 10 to 13 among the various kinds of processing performed by the electronic control device 40. This is executed periodically by a method such as a hard interrupt.

When the process proceeds to this routine, first, it is determined whether or not the pattern selection switches 10 to 13 have been pressed (step S100). Here, if an affirmative determination is made that the button has been pressed, subsequently, it is determined whether a sewing pattern other than the lock stitch has been selected, that is, whether or not the pattern selection switches 12 to 13 have been pressed (step S110). Here, if an affirmative determination is made with a sewing pattern other than stop sewing, a process name for forming a sewing pattern is displayed on the display unit 19, and the number of stitches is displayed on the display units 20 and 21. (Step S120). This processing will be described in detail below.

When the pattern selection switch 13 is pressed and selected as a sewing pattern other than the stop sewing, for example, as shown in FIG. 3, the process name E is displayed on the display unit 19, and the number of stitches (12 in this embodiment) is displayed. Is displayed on the display units 20 and 21. At this time, when the stitch number setting switch 27 is depressed, as shown in FIG. 6, the process name F is displayed on the display unit 19, and the number of stitches (25 in this embodiment) is displayed on the display units 20 and 21. Display processing is performed. The number of stitches displayed corresponding to these process names E and F is set in RAM 40c
The number of stitches stored in the or stitch number setting switches 24, 25, 28 and
This is the number of stitches set and changed using 29 etc. Step F
When the number-of-stitches setting switch 23 is pressed in a state where the number of stitches is displayed, the process returns to the process of displaying the number of stitches in step E.

On the other hand, if a negative determination is made in the step S110 that the stitch pattern is formed, a process of displaying the number of stitches in each step of forming the stitch pattern on the display units 18 to 21 is performed (step S130). This processing has been described in detail in the section of [Prior Art] and will not be described.

Next, in the automatic sewing machine according to the present embodiment, the operation of the sewing machine when performing the front and rear stop sewing shown in FIG. 8 and the operation of the sewing machine when performing the naming sewing shown in FIG. 9 will be described. When the front and rear stop sewing shown in FIG. 8 is performed, first, the pattern selection switches 10 and 11 are depressed by the operator, and the number of stitches in each of the steps A to D is set by the stitch number setting switch 22.
Or 29 At this time, the operation panel 9
The set number of stitches is displayed on the display units 18 to 21 as shown in FIG. Next, the worker goes to table 1
After that, the work cloth is set, and then the pedal 7 is stepped forward. Thus, the CPU 40a performs sewing processing of the four stitches by controlling the drive of the motor 4 via the motor drive circuit 40g (step 50a in FIG. 8). After the four stitches are sewn, the reverse stitching of the four stitches is performed by, for example, driving the reverse solenoid 43 via the solenoid drive circuit 40i (step 50b). When the reverse stitching of the four stitches is completed, the reverse rotation solenoid 43 is driven again, and thereafter, the routine shifts to a normal sewing process (Step 50b and Step 5).
Step between 0c). At this time, when the operator releases the foot from the pedal 7, the needle 5 of the sewing machine stops at the needle lower position. Thereby, the operator can change the direction of the work cloth without shifting the sewing position.

When the normal sewing process is completed, the operator steps on the pedal 7 rearward. As a result, reverse stitch sewing of three stitches is performed by driving the reverse rotation solenoid 43 (step 50c). When the reverse stitch sewing of the three stitches is completed, the reverse rotation solenoid 43 is driven to perform the sewing process of the three stitches (step 40d). Thereafter, the thread trimming solenoid 44 is driven to perform a thread trimming process, and the control is stopped by setting the needle 5 to the needle upper position.

On the other hand, when performing the naming sewing shown in FIG. 9, first, the pattern selection switch 13 is pressed by the operator, and the number of stitches in steps E and F is set to the stitch number setting switches 24, 25, 28 and
Set using 29. At this time, the set number of stitches is displayed on the display units 19 to 21 as shown in FIG. 3 and FIG. Next, the operator sets the work cloth on the table 1 and thereafter steps forward the pedal 7. Thereby, the CPU 40a performs the process of sewing 12 stitches with the point P1 shown in FIG. 9 as the sewing start point (step 51e in FIG. 9).
At the point P2, the needle 5 is set to the needle lower position, and the sewing process is stopped. As a result, the operator releases his / her foot from the pedal 7 and changes the direction of the work cloth around the point P2 to set the direction of the work cloth to an appropriate position and then depress the front of the pedal 7. When the front depression of the pedal 7 is performed, the CPU 40a performs sewing processing of 25 stitches again (step 51f). When the sewing process of the 25 stitches is completed, the needle 5 is moved to the needle lower position at the point P3, and the sewing process is stopped. Thereby, the worker changes the direction of the work cloth by performing the same operation as the operation performed at the point P2. Thereafter, the same processes and operations as those described above are repeated. That is, 12 needle stitches from point P3 to point P4 (step 51e) and 25 stitches from point P4 to point P1
Needle sewing (step 51f) is performed. When the sewing processing up to the point P1 is completed, the CPU 40a performs the thread trimming processing, moves the needle 5 to the needle upper position, and stops the control, as in the case of the above-described front and rear stop sewing.

As described above, according to the automatic sewing machine of the present embodiment, the number of stitches in each step of forming a sewing pattern other than the stitching pattern is displayed on the display unit 19 that displays the number of stitches in each step of forming the stitching pattern. It is displayed on 20 and 21 together with the process name. Therefore, there is an excellent effect that the number of stitches can be clearly recognized without illusion of the displayed number of stitches with the number of stitches in each step of the stitching pattern. Further, since the process names are displayed in alphabets, there is no illusion of the process names with the number of stitches. Further, there is no need to newly provide a display unit for displaying the process name or a means for changing the process name, and the configuration can be made by using the operation panel 9 which has been conventionally used, as it is. In which the number of stitches display processing routine is written
It is only necessary to replace M by one chip, and the automatic sewing machine already used in the market can be easily remodeled. Further, in the present embodiment, the display of the steps E and F is changed by using the stitch number setting switches 23 and 27, so that the structure can be further simplified.

In the above embodiment, the pattern selection switch 10
13 to the pattern selection means, the display portions 18 and 19 to the first display portion, the stitch number setting switches 22, 23, 26 and 27 to the first stitch number setting means, and the stitch number setting switches 23 and 27 thereof. Is the process changing means, the display units 20 and 21 are the second display unit, the stitch number setting switches 24, 25, 28, and 29 are the second stitch number setting means, and the processing of S110 in FIG. 18-21
The processing related to the control of step (a) corresponds to the display function switching means, and the processing of S110 and the processing related to the reading of the signals from the stitch number setting switches 22 to 29 in S120 correspond to the setting function switching means.

[Effects of the Invention] According to the automatic sewing machine of the present invention, the number of stitches in each step of the sewing pattern other than the stop stitching pattern can be determined with a simple configuration without illusion of the number of stitches in each step of the stop stitching pattern. Has an excellent effect of being able to clearly recognize. As a result, it is possible to preferably remove the adverse effect of incorrectly setting the number of stitches. Further, since the process name is indicated by a symbol other than a number, the process name is not illusioned with the number of stitches. Further, there is no need to newly provide a display unit for displaying the process name or a means for changing the process name, and an excellent effect that the operation panel conventionally used can be used as it is. Having.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating the basic configuration of the automatic sewing machine of the present invention, FIG. 2 is an overall schematic diagram showing an automatic sewing machine according to an embodiment of the present invention, and FIG. FIG. 4 is a block diagram showing the electronic control unit 40, and FIG.
FIG. 6 is a flow chart showing the processing of the "number of stitches display processing routine". FIG.
FIG. 7 is an explanatory view showing the states displayed on 20 and 21. FIG. 7 is an explanatory view showing the state in which the number of stitches in each step of the stop sewing is displayed on the conventional operation panel. FIG. FIG. 9 is an explanatory view showing a sewing pattern with a name, FIG. 10 is an explanatory view showing a state in which the number of stitches of steps E and F are displayed on a conventional operation panel, It is. 2 ... sewing machine body, 3 ... pulley, 4 ... motor, 7 ... foot pedal, 8 ... control box, 9 ... operation panel, 10, 11, 12, 13 ... pattern selection switch, 18, 19, 20, 21
... Display unit, 22,23,24,25,26,27,28,29 Stitch number setting switch, 40 ... Electronic control device

Claims (1)

(57) [Scope of request for utility model registration] 1. A pattern selecting means for selecting an arbitrary sewing pattern from a plurality of sewing patterns including a fixing sewing in connection with a manual operation, and the fixing sewing pattern is selected by the pattern selecting means. A first display unit for individually displaying the number of stitches in each step related to the first stop sewing in the respective steps of forming the first stop sewing pattern by a numeral; First stitch number setting means for setting the number of stitches of each process displayed on the section; and the first display section is configured separately from the first stitch number, and when the stitch pattern is selected by the pattern selecting means. And a second display unit for individually displaying the number of stitches of each step related to the stop stitching at the end of sewing among the respective steps of forming the same stitch pattern, and the first stitch number setting unit separately. Configured and related to manual operation And a second stitch number setting means for setting the number of stitches of each process displayed on the second display section. The automatic sewing machine further comprising: The pattern includes a sewing pattern composed of a plurality of steps in which the number of stitches can be individually set, and when a sewing pattern other than the fixed stitching pattern is selected by the pattern selecting means, the step name of the sewing pattern is set to the first name. A display function switching unit for displaying a number other than a number on the display unit or the second display unit and displaying the number of stitches in the same step as a number on the second display unit or the first display unit; When a sewing pattern other than the fixed stitching pattern is selected, the first stitch number setting means or the second stitch number setting means is changed to the first display section or the second stitch number in association with a manual operation. An automatic sewing machine comprising: a setting function switching unit that functions as a process changing unit for changing a process name displayed on a display unit.