JPH0587279B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention has two needle bars each having a needle at the lower end, and a two-needle sewing state in which both needle bars can be driven, and The present invention relates to a sewing machine that is capable of forming two parallel stitch rows each having various lengths by setting a single stitch state in which one needle bar is at rest and only the other needle bar is driven.

[Conventional technology]

Conventionally, for example, diagonal welt sewing machines have two sewing states: a two-needle sewing state in which two needle bars can be driven, and a single-needle sewing state in which one needle bar is paused and only the other needle bar is driven. By setting, Fig. 8 a, b
As shown in the figure, two parallel stitch rows Sa and Sb having various lengths are formed.

As shown in FIGS. 9a and 9b, this sewing machine is equipped with a programming device for setting the lengths of the stitch rows Sa and Sb. When inputting pattern data, first, use the operation panel 41 of the programming device.
By operating the changeover switch 42 located above, the stitch row on either the left or right side is selected at the end of sewing.
Select in advance whether Sa or Sb should be formed and set the length La of one of the selected stitch rows Sa using a predetermined key (not shown)
After inputting the sewing start deviation amount S by which the start point of the other stitch row is shifted forward from the start point of the one stitch row, and the end point of the one stitch row is The amount of deviation at the end of sewing E which deviates backward from the end point of the other stitch row is input.

However, with the above-mentioned device, there are restrictions on the types of sewing patterns that can be programmed.
Not only is it impossible to program the pattern shown in Figure 4, but it is also impossible to program a pattern in which there is no deviation between the end points Pae and Pbe of the left and right stitch rows Sa and Sb, as shown in Figure 4 d and e. However, there was a problem in that it became unclear for which stitch row the stitch length should be set.

This invention was made to solve the above problems, and its purpose is to increase the number of programmable sewing patterns, and to
There is no need to specify in advance the stitch row on which the sewing length should be set, making it easy to input various data, and also being able to reliably know the stitch row for which the sewing length has been set. An object of the present invention is to provide a sewing data programming device for a sewing machine.

[Means for Solving the Problems] In order to achieve the above object, this invention has the following features:
A storage means for storing a plurality of patterns of sequential relationships between the start point and end point of one of the two stitch rows and the start point and end point of the other stitch row; a display means for displaying;
a selection means for selecting an arbitrary pattern from the storage means; a first setting means for setting the length of one of the two stitch rows of the pattern selected by the selection means; a second setting means for setting a deviation amount of the start point of the other stitch row with respect to the start point of the one stitch row whose length is set by the first setting means; a third setting means for setting the amount of deviation of the end point of the other stitch row with respect to the end point of the one stitch row whose length is set by the setting means; and data processing means for creating sewing data for switching the sewing machine between the single-needle sewing state and the double-needle sewing state based on the sewing length and deviation amount set by the setting means of No. 3.

[Effect]

According to this invention, when the selection means selects a pattern representing the sequential relationship between the start point and end point of two stitch rows stored in advance in the storage means, the display means displays the pattern. be done. or,
The first setting means sets the stitch length of one of the two stitch rows of the pattern. And, regarding the problem of one seam row,
The amount of deviation of the starting point of the other stitch row is set by the second setting means. Further, the amount of deviation of the end point of the other stitch row with respect to the end point of the one stitch row is a third
It is set by the setting means of. Then, the data processing means, based on the sewing length and each deviation amount,
Sewing data for switching between the single-needle sewing state and the double-needle sewing state is created. Furthermore, in the present invention, if patterns are displayed in advance, the selection can be made easily, and the selected pattern can be displayed in a manner that distinguishes it from other patterns.

〔Example〕

Hereinafter, an embodiment in which the present invention is embodied in a diagonal welt sewing machine will be described in detail with reference to the drawings.

As shown in FIG. 2, the sewing machine main body 1 is placed on a table 2. A pair of needle bars 3 and 4 are each provided on an arm portion of the sewing machine body 1 so as to be movable up and down, and needles 3a and 4a are respectively attached to the lower ends thereof. A well-known needle bar switching device is used to create a two-needle sewing state in which the two needle bars 3 and 4 can be driven, and a single-needle sewing state in which one needle bar is stopped and only the other needle bar is driven. In each state, the needles 3a and 4a work together with a thread loop catcher (not shown) in the bed of the sewing machine body 1 to create two parallel rows of various lengths on the fabric. form a seam.

As shown in FIG. 2, the clamping device 5 is placed on the table 2 at a preparation position (position shown by chain lines in FIG. 2) closer to the operator than the needles 3a, 4a, and a position where the needles 3a, 4a
It is disposed so as to be movable along a straight line passing through the sewing position near a. As is well known in the art, this clamping device 5 includes a pair of large holding plates 6 that can be raised and lowered to press and hold the body cloth against the upper surface of the table 2, and a body cloth that is folded from both sides of the beaded cloth placed on the body cloth. A pair of folding plates 7 that can be opened and closed laterally to hold the fabric, and a pair of flap pressers that can be raised and lowered to press and hold the flap cloth placed on the welt fabric on the folding plates 7 as necessary. body (not shown)
It is equipped with

The binder 9 is disposed above the table 2 so as to be movable up and down so as to extend from the preparation position of the clamp device 5 to the sewing position. As is well known in the art, this binder 9 has a substantially inverted T-shaped cross section, and after the beading fabric is placed on the body fabric, it is lowered onto the beading fabric prior to the folding operation of the folding plate 7. Then press and hold the welt fabric on the body fabric.

Then, with the clamp device 5 moved to the preparation position shown by the chain line in FIG. The hem cloth and flap cloth are held under pressure on the table 2, and in this held state, as the clamp device 5 moves, each cloth is moved from the preparation position to the sewing position, and the needles 3a, 4 are moved from the preparation position to the sewing position.
A, etc., form a predetermined number of stitches.

The sewing machine of this embodiment is equipped with a control device shown in FIG. 1, which includes a central processing unit CPU11 as a data processing means and a ROM1 as a storage means.
2 and RAM13. The ROM 12 stores a display control program and a sewing machine operation control program as shown in the flowcharts of FIGS. 6 and 7, and also stores the two parallel stitch rows Sa and Sb shown in FIGS. Stitch row on either side
Starting points Pas, Pbs and ending points Pae, Pbe of Sa, Sb
The starting points of the other stitch rows Sb and Sa for each of
The context of Pbs, Pas and end points Pbe, Pae is stored as various sewing patterns P1 to P9.

On the other hand, an operation panel 20 shown in FIG. 3 is disposed on the front surface of the arm portion of the sewing machine main body 1. On the operation panel 20, there are two rows of pattern display bodies 22a, 22b each consisting of a plurality of light emitting diodes arranged in parallel in the vertical direction, and each pattern display body 22a, 2.
A reference display body 23a, 23b consisting of a pair of light emitting diodes arranged in parallel above 2b is arranged,
Both constitute display means.

A sewing length setting switch 24 and a length display section 25 as a first setting means are arranged on the upper part of the operation panel 20, and by operating this sewing length setting switch 24, various settings shown in FIG. 4 a to i are performed. The stitch length L of any one of the stitch rows of the sewing patterns P1 to P9 is a three-digit numerical value in millimeters and is input to the CPU 11 via the input interface 11a. A pattern selection switch 26 and a pattern number display section 27 as selection means are disposed below the sewing length setting switch 24, and when the pattern selection switch 26 is operated, the pattern number "1" of each of the sewing patterns P1 to P9 is selected. ” to “9” are input to the CPU 11 via the input interface 11a.

A sewing start deviation setting switch 28 and a sewing start deviation display section 29 as second setting means are arranged below the pattern selection switch 26, and as the sewing start deviation setting switch 28 is operated, each stitch row Sa , Sb between the starting points Pas and Pbs (see Fig. 5) is input to the PU 11 via the input interface 11a in length in millimeters expressed as a one-digit value. Ru.
A sewing end deviation setting switch 30 and a sewing end deviation display section 31 as third setting means are arranged below the sewing start deviation setting switch 28. Sewing end deviation between end points Pae and Pbe〓
E (see Figure 5) is the length in millimeters expressed as a single digit number, and the length of the input interface 11
It is input to the CPU 11 via a.

A foot switch 32 for driving the clamp device 5 is installed in an operating body 33 disposed below the table 2 shown in FIG. 1, and a start switch 34 for starting the sewing machine is installed.
and via the input interface 11a.
Connected to CPU11. The actuator 35 and the sewing machine motor 36 of the various actuating devices constituting the clamp device 5 are driven by drive circuits 35a and 36, respectively.
36a and through the output interface 11b.
connected to the CPU 11, and each of the switches 32, 3
It is activated in response to an input signal from 4.

The pattern display bodies 22a, 22b, the reference display bodies 23a, 23b, and each display section 25, 27, 2
9 and 31 are connected to the CPU 1 via display circuits 37, 38, 39 and output interface 11b, respectively.
1 and each of the switches 24, 26, 2
When various numerical values are input through operations 8 and 30, the CPU 11 displays those numerical values on the respective display sections 25 and 30.
Displayed on 27, 29, and 31. In addition, the CPU 11 performs predetermined arithmetic processing based on those values,
According to the calculation result, each display body 22a, 22
23a, 23b, and also creates sewing data to be described later for switching the sewing machine between a two-needle sewing state and a single-needle sewing state.

Next, the operation of the sewing data programming device configured as described above will be explained. First, in step S1 (hereinafter simply referred to as S1, the same applies to other steps) shown in FIG. 6, when the standard sewing length L for sewing patterns P1 to P9 is input by operating the sewing length setting switch 24, The CPU 11 temporarily stores it in the RAM 13 (S2).
Next, in order to select sewing patterns P1 to P9, when the pattern selection switch 26 is operated and the pattern number PN is input, the CPU 11 reads the display data of the patterns P1 to P9 corresponding to that number from the ORM 12, and selects the pattern. S3 to S for controlling the display length of the display bodies 22a and 22b
5. As a result, the general shape of the selected pattern is displayed.

Then, in S6, the CPU 11 initializes the values of the sewing start deviation amount S and the sewing end deviation amount E in accordance with the pattern number. That is, when the pattern number is "1", "6", or "7", the deviation amount S is set to "0", and in other cases, it is set to "11". Further, when the pattern number is "1", "4", or "5", the deviation amount E is set to "0", and in other cases, it is set to "1".

Next, when the sewing start deviation amount S is input by operating the sewing start deviation setting switch 28, the CPU
11 is S7, S which stores the numerical value in RAM13.
8. Furthermore, when the sewing end deviation amount〓E is input by operating the sewing end deviation setting switch 30,
The CPU 11 stores the value in the RAM 13.
9, S10.

As described above, when various data inputs are completed, the CPU 11 controls the display of the reference display bodies 23a and 23b in each step after S11. That is, when it is determined in S11 that the previously set pattern number PN is "1", the CPU 11 performs the following according to the pattern number:
Step S12 in which both reference indicators 23a and 23b are turned on to notify that the lengths of both stitch rows Sa and Sb are equal. In addition, in S13, when it is determined that the pattern number is one of the pattern numbers "4", "6", and "8", the CPU 11 accordingly selects the stitch row Sa on the left side from the stitch row on the right side. In order to notify that the row is longer than the row Sb, only the left reference display 23a is turned on at S14.

Further, in S15, when it is determined that the pattern number is one of "5", "7", and "9", the CPU 11 accordingly determines that the stitch row Sb on the right side is the one on the left side. In order to notify that the eye row is longer than Sa, only the right reference display 23b is turned on (S16).

Next, we will explain the case where the pattern number selected first is "2" or "3".
First, in S17, when it is determined that the pattern number is "2", the CPU 11 executes the next S17.
In step 18, it is determined whether the two deviation amounts 〓S, 〓E are equal or not, and if the determination is YES, it means that the lengths of the stitch rows Sa and Sb on both sides are equal.
Returning to S12, the left and right reference display bodies 23a, 2
3b are both turned on.

Also, if the determination in S18 is NO, the next S
In step S19, the CPU 11 determines whether the deviation amount at the start of sewing S is the same as the deviation amount at the end of sewing E. If the determination in S19 is YES, the stitch row Sa on the left side is larger than the stitch row Sa on the right side. Since it will be longer than that, the process returns to S14 and only the left reference display 23a is turned on. The judgment in S19 is
In the case of NO, the stitch row Sb on the right side is longer than that on the left side, and the process returns to S16 and only the reference display body 23b on the right side is turned on.

On the other hand, when it is determined in S20 that the pattern number is "3", in the next S12 the CPU 11 determines whether the two deviation amounts 〓S, 〓E are equal or not, and if the determination is YES, , Returning to S12, the left and right reference display bodies 23a, 23b are displayed.
light up together. If the determination in S21 is NO, the CPU 11 determines in the next S22 whether the deviation amount at the start of sewing S is larger than the deviation amount at the end of sewing E, and if the determination in S22 is YES, the above-mentioned Returning to S16, the reference display body 23 on the right side
Light up only b. If the determination in S22 is NO, the process returns to S14 and the reference display 2 on the left side is
Turn on only 3a.

In addition, when inputting the pattern number, if a numerical value other than the preset pattern number is input, S11, S13, S15, S17 and S
All 20 decisions will be NO, and in this case,
In S23, the occurrence of an error is notified by a warning sound or the like.

After the lighting control of the reference display bodies 23a and 23b is completed, the CPU 11, in S24, sets the sewing machine to the single-needle sewing state and the double-needle sewing state based on the reference sewing length L and the respective deviation amounts 〓S, 〓E. Create sewing data for switching to and from the state. At this time, the reference length L input in S1 is the longer one of the pair of left and right stitch rows (reference display body 23a,
23b) is set as the length of the lit stitch row). This sewing data is composed of the distinction between the needles 3a and 4a to be used in each state, and the number of stitches to be executed in each state, calculated from the numerical values L, 〓S, 〓E, cloth feed pitch, etc. has been done.

After creating this sewing data, press the start switch 3.
4 is operated, the sewing machine is operated together with the clamp device 5 to which the body cloth, beading cloth, etc. are attached in advance.
A predetermined stitch row is formed according to the sewing data. For example, the stitch row of pattern P3 shown in FIG.
When Sa, Sb are formed, the starting point of the stitch row Sb
From Pbs to the starting point Pas of the stitch row Sa, only the right needle 4a is operated. From there the ending point Pbe
Until then, both needles 3a and 4a are operated, and only the left needle 3a is operated from the end point Pbe of the stitch row Sb to the end point Pae of the stitch row Sa.

As described above, in this embodiment, the lengths of the pattern indicators 22a and 22b are changed for the two stitch rows Sa and Sb of the sewing pattern, and the sewing length L and the type (number) of the sewing pattern are changed. ) and the values of each deviation 〓S, 〓E, both stitch rows Sa,
Among Sb, the longer stitch row is the reference display body 23a,
23b, the operator can easily and reliably know the longer stitch row, even if the pattern is difficult for the operator to judge whether it is long or short, and each stitch row Sa, It is possible to prevent the possibility that Sb will be erroneously formed.

Furthermore, in this embodiment, the stitch rows having the patterns P8 and P9 shown in FIG. Therefore, various demands of users can be satisfied.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and may be embodied in, for example, a two-needle sewing machine other than a diagonal welt sewing machine, or in which inputting the sewing length and selecting a pattern are performed in the reverse order. , sewing length L,
The deviation amounts S and E can be input in the form of inputting the number of stitches, or the approximate shape of each pattern P1 to P9 can be displayed in advance on the front of the sewing machine body 1, and based on that, the patterns P1 to P9 can be adjusted. It is also possible to make selections.

〔Effect of the invention〕

As described in detail above, the present invention can increase the number of types of programmable sewing patterns, eliminates the need to specify in advance the stitch row on which the sewing length is to be set, and allows input of various data. This has the excellent effect of being able to easily perform the process, and also being able to reliably know the stitch row for which the stitch length has been set.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a control device for a sewing machine embodying the present invention, FIG. 2 is a perspective view of the sewing machine,
Figure 3 is an enlarged front view of the operation panel, Figures 4 a to i
is a schematic diagram of the sewing pattern, FIG. 5 is an enlarged explanatory diagram of the sewing pattern, and FIGS. 6 and 7 are flowcharts. FIGS. 8a and 8b are explanatory diagrams of a state in which a pattern is created by a conventional apparatus, and FIGS. 9a and 9b are front views of the conventional apparatus in a state in which input data is displayed. 3, 4... Needle bar, 3a, 4a... Needle, 11...
CPU as a data processing means, 12... ROM as a storage means, 22a, 22b... pattern display body, 23a, 23b... reference display body (the above 2
2a, 22b, 23a, and 23b constitute display means), 24...stitch length setting switch as first setting means, 26... pattern selection switch as selection means, 28... 2. Sewing start deviation setting switch as setting means; 3.
0...Sewing end deviation setting switch as third setting means, Sa, Sb...stitch row, Pas, Pbs...start point, Pae, Pbe...end point, 〓S,〓E...deviation amount.

Claims (1)

[Scope of Claims] 1. Two needle bars 3, 4 each having needles 3a, 4a at the lower end, and capable of driving both needle bars 3, 4.
By setting a full-needle sewing state and a single-needle sewing state in which one of the needle bars 3, 4 is stopped and only the other needle bar 3, 4 is driven, parallel threads having various lengths can be created. In a sewing machine that can form two stitch rows Sa and Sb, one of the two stitch rows Sa and Sb.
Starting point of Sa, Sb (Pas, Pbs and ending point Pae,
Storage means 1 for storing a plurality of patterns P1 to P9 of the starting points Pas, Pbs and ending points Pae, Pbe of the other stitch rows Sa, Sb for each of Pbe.
2, and display means 2 for displaying the patterns P1 to P9.
2a, 22b, 23a, 23b, and arbitrary patterns P1 to P from the storage means 12.
a selection means 26 for selecting a pattern P selected by the selection means 26;
A first setting means 24 for setting the length L of one of the two stitch rows Sa and Sb of 1 to P9; Starting points Pas, Pbs of one stitch row Sa, Sb where L is set
In contrast, the starting points Pas, Pbs of the other stitch row Sa, Sb
second setting means 28 for setting the amount of deviation (〓S) of
and the end points Pae, Pbe of one of the stitch rows Sa, Sb whose length L is set by the first setting means 24.
In contrast, the end points Pae, Pbe of the other stitch row Sa, Sb
Third setting means 30 for setting the eccentricity amount (〓E) of
and the first, second and third setting means 24, 2.
data processing means for creating sewing data for switching the sewing machine between the single-needle sewing state and the double-needle sewing state based on the sewing length L and the deviation amount (〓S,〓E) set by 8 and 30; 11. A sewing data programming device for a sewing machine, comprising: