JPH0133195B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a multi-pattern sewing machine capable of forming a plurality of predetermined patterns.

Prior Art In a multi-pattern sewing machine that can form multiple types of predetermined patterns, the shapes of the patterns that can be formed and corresponding pattern numbers for numerically specifying each pattern are generally displayed on the front of the sewing machine. A desired pattern can be selected and formed based on the displayed pattern image and its corresponding pattern number. In recent years, such multi-pattern sewing machines have seen a rapid increase in the types of patterns that can be formed, even though the pattern display area on the front of the machine that can display the pattern shape and pattern number is limited. As a result, the display of the shapes of these patterns and the corresponding pattern numbers gradually become smaller, resulting in a problem that the displays become difficult to see.

On the other hand, a plurality of display boards are provided corresponding to each of the plurality of pattern groups, and on which figures and corresponding pattern numbers are posted for each pattern in the pattern group;
It includes an operating tool that can be operated to select one of the plurality of display boards, and selects a pattern group corresponding to the selected display board from among the plurality of pattern groups in conjunction with the operation of the operating tool. a pattern group selection device to select;
A sewing machine comprising an input key for inputting a pattern number corresponding to the desired pattern in order to select the desired pattern from the selected pattern group, and a display device for visually displaying the pattern number input by the input key. have been proposed and are beginning to be put into practical use.
For example, a sewing machine employing a pattern display device previously proposed by the applicant in Utility Model Application No. 58-1600 and Japanese Patent Application No. 58-2093 is one such example. According to such a sewing machine, a large number of pattern figures and pattern numbers can be displayed in a sufficiently large size in a limited area.

However, in the above-mentioned sewing machines, conventionally, even when the display board is switched by the operating body,
The pattern number before switching the display board was maintained as is, or it was automatically switched to the number of a specific pattern such as a straight stitch, so the pattern number could be changed to the desired pattern each time the display board was switched. I had to re-enter it accordingly.

Purpose of the Invention The present invention has been made under the above circumstances, focusing on the fact that some specific patterns tend to be repeatedly formed during actual sewing. In a sewing machine equipped with a plurality of display boards as described above, a pattern group selection device including an operating body, input keys, and a display, the desired pattern selected previously in each pattern group is selected. To provide a multi-pattern sewing machine in which selection and display of the pattern number are automatically performed in conjunction with switching of a display board.

Structure of the Invention In order to achieve this object, the multi-pattern sewing machine according to the present invention provides (a) a plurality of display boards that are provided corresponding to each of the plurality of display boards and that temporarily store input signals representing input pattern numbers; (b) memory specifying means for specifying a memory means corresponding to the selected display board in conjunction with the selection of a display board by operating the operating body; and (c) memory means in the designated memory means. (d) pattern selection means for selecting one pattern from the selected pattern group according to the input signal in the designated memory means; The pattern number display and pattern selection are automatically performed in accordance with the specified input signal in the memory means when the display board is selected to be switched by the operation.

Effects of the Invention In the multi-pattern sewing machine configured as described above, when a display board is selected by the operating body, the memory designation means specifies the memory means corresponding to the selected display board. Then, the latest input signal representing the pattern number input by the input key is stored in the designated memory means. On the other hand, the input signal stored in the designated memory means is supplied by the supply means to the display device for visually displaying the pattern number, and the pattern number represented by the input signal is visually displayed. At the same time, the input signal stored in the specified memory means is also sent to the pattern selection means, and according to this input signal, one pattern is automatically selected from the pattern group corresponding to the selected display board. selected. In other words, when a desired display board is switched and selected using the operating body, the memory means specified by the memory specifying means is also switched accordingly, so that the pattern that was selected before the display board switching operation is changed accordingly. Regardless of the pattern number, the previously selected pattern number is selected and displayed again in the memory means corresponding to the display board selected again, according to the input signal last stored in the previous pattern selection. Regarding the previously selected display board, among the patterns listed on that display board, the last selected pattern from the previous time has the highest probability of being sewn again, so in many cases, the pattern will be automatically selected just by switching the display board. It is possible to obtain the state of being.

For example, in the case where several specific patterns are to be repeatedly formed, if the display board determines only one pattern to be selected, the display board may be switched using the operating body. By simply making a selection, both the selected pattern and the visually displayed pattern number can be automatically selected in accordance with the predetermined pattern, thereby eliminating the troublesome operation of specifying pattern numbers one by one. In addition, not only in the case where only one selection pattern is determined for a display board, but also for one display board, the final selected pattern at the time of selecting that display board and the next selected pattern for that display board. This is also effective when the first selected pattern is the same.

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

FIG. 1 is a diagram showing the appearance of a multi-pattern sewing machine which is an embodiment of the present invention. In the figure, reference numeral 10 denotes a bed part, and an upper arm part 14 is supported horizontally at one end by a pillar part 12 erected on the upper surface of the bed part. A head 16 is formed at the other end of the upper arm portion 14, and a needle bar 13 equipped with a sewing needle and a presser foot 15 are provided at the bottom of the head 16. Further, a feed dog 17 for feeding the work cloth is provided near the needle drop point of the sewing needle in the bed portion 10.
is provided. The needle bar 13 is driven laterally by a needle swing actuator 66, which will be described later, while the feed amount and direction of the feed dog 17 can be changed by a feed actuator 68, which will be described later. A desired pattern is formed on the work cloth by the cooperation of the sewing needle fixed to the needle bar 13 and the feed dog 17.

A pattern display window 18 is provided on the front surface of the upper arm portion 14, and a group of patterns as shown in FIGS. 2 and 3 are displayed on the right side of the pattern display window 18. Two movable display boards 20A and a fixed display board 20B on which figures and their corresponding pattern numbers are posted can be selectively switched and displayed. The switching is performed by operating an operating lever 22 as an operating body provided on the upper part of the pillar portion 12 and moving the movable display plate 20A via a switching mechanism (not shown). FIG. 2 shows a state in which the movable display board 20A is stacked on the front side of the fixed display board 20B, and FIG. 3 shows a state in which the movable display board 20A is moved and the fixed display board 20B is exposed to the front. shows. A fixed display board 24 is fixedly provided on the left side of the pattern display window 18 on which a practical pattern figure 28 representing a practical pattern and a pattern number 32 are posted. In other words, the shapes 28 of practical patterns that are likely to be used frequently and their pattern numbers 32 are always the same on the fixed display board 24 on the left side of the pattern display window 18, regardless of the switching of the movable display board 20A. Images 30 of decorative patterns such as kana characters and alphabet letters that are displayed and are used infrequently are posted on the movable display board 20A and the fixed display board 20B, and by switching the display surfaces thereof, a plurality of different groups can be displayed. The display can be switched for each group.
This makes it possible to effectively utilize the pattern display area on the front of the sewing machine. Also, pattern number 32 is for which display board 20A, 20
The content is the same in B, but as will become clear from the explanation below, one pattern is identified by the difference between the display boards 20A and 20B posted in the pattern display window 18. It's summery.

On the other hand, as shown in FIG. 1, a numeric keypad 34 as an input key is provided on the pillar section 12 of the sewing machine, and the desired pattern displayed on the movable display board 20A or the fixed display board 20B is input. By operating the numeric keypad 34 to designate a two-digit corresponding pattern number 32 corresponding to the figure, a desired pattern can be selected and formed. Further, the pillar portion 12 is provided with a display 36 that displays a two-digit number, and the pattern number of the selected pattern is displayed on the display 36. The operator can select a desired pattern or confirm which pattern has been selected by viewing the display on the display 36. In FIG. 1, reference numeral 38 denotes a start/stop switch for starting and stopping the sewing machine.

The sewing machine constructed as described above is equipped with a control circuit shown in FIG.

In this control circuit, reference numeral 40 denotes a limit switch, which is turned ON/OFF by the operating lever 22 in conjunction with the switching position of the movable display plate 20A. When the movable display board 20A shown in FIG. 2 is displayed, it is turned on and generates an H-level display board selection signal PS, which is supplied to each part of the control circuit.

On the other hand, 42 is an encoder which is also equipped with a counter, a one-shot multi-circuit, etc., and when a two-digit pattern number is designated by the numeric keypad 34, an input signal representing the two-digit pattern number is sent.
While converting the SI into a code signal and supplying it to the first latch 44 and the second latch 46, a two-digit operation signal indicating that the two-digit pattern number input operation has been completed.
SO is supplied to one input terminal of the first AND gate 48 and the second AND gate 50, respectively. The display board selection signal PS is supplied directly to the other input terminal of the first AND gate 48 and via the inverter 52 to the other input terminal of the second AND gate 50, so that the pattern display When the movable display board 20A is posted on the window 18, the signal is sent to the first latch 44 via the first AND gate 48, and when the display board 20B is posted, the signal is sent to the second latch 46 via the second AND circuit 50. The two-digit operation signal SO is supplied as a latch signal. and,
The first latch 44 and the second latch 46 are adapted to latch the input signal SI supplied from the encoder 42 when these latch signals are input. That is, the first latch 44 stores an input signal SI representing the latest pattern number selected from a group of pattern numbers displayed when the movable display board 20A is displayed in the pattern display window 18, and The second latch 46 similarly stores an input signal SI representing the latest pattern number selected from a group of pattern numbers displayed by the fixed display board 20B when it is displayed.

Input signals stored in these latches 44, 46
Both SI and SI are supplied to the input port of the multiplexer 54, and are selectively output depending on the presence or absence of the display panel selection signal PS supplied to the port selection terminal thereof. In this multiplexer 54, when the display panel selection signal PS is supplied, the input signal SI stored in the first latch 44 is selected and output, and when the display panel selection signal PS is not supplied, the input signal SI is selected and outputted. The input signal SI stored in the double latch 46 is selectively output. Then, the input signal SI selectively outputted in this manner is supplied to the display operation circuit 56 and the first address memory 58.

The display operating circuit 56 is connected to the multiplexer 54
The input signal SI from the input signal SI is decoded and driving power is supplied to the display 36 to cause the display 36 to numerically display the pattern number represented by the input signal SI.

Further, the start address memory 58 is a memory in which the start address corresponding to each pattern that can be sewn is stored, and the display board selection signal PS is supplied together with the input signal SI from the multiplexer 54. , the start address corresponding to the pattern determined by the pattern number represented by the input signal SI and the presence or absence of the display panel selection signal PS is output. When the display board selection signal PS is supplied, which indicates that the movable display board 20A is displayed on the pattern display window 18, a selection signal is selected from among the first address group corresponding to the pattern group posted on the movable display board 20A or on the fixed display board 20B. is posted on the pattern display window 18. When the display board selection signal PS is not supplied, the pattern corresponding to the pattern number represented by the input signal SI is selected from among the first address group corresponding to the pattern group posted on the fixed display board 20B. The first addresses of each are selectively output. In addition, regarding the practical pattern posted on the fixed display board 24, the display board selection signal PS
Regardless of the presence or absence of supply, the same starting address is selected and output according to the pattern number represented by the input signal SI. The leading address selectively output in this manner is then supplied to the stitch data generating device 60.

The stitch data generation device 60 stores stitch data groups corresponding to each pattern that can be formed, and when a start address is input from the start address memory 58, a series of stitches corresponding to the start address is stored. Data is selected and sequentially outputted in synchronization with a timing signal TS from a timing signal generation circuit 62 that is synchronized with a sewing machine main shaft (not shown). Then, the output stitch data is converted into an analog signal by the actuator actuating circuit 64, power amplified, and supplied to the needle swing actuator 66 and the feed actuator 68. Accordingly, a feed adjuster (not shown) for adjusting the feed direction and feed amount of the needle bar 13 and the feed dog 17 is driven in accordance with the stitch data. As a result, a pattern corresponding to the first address, that is, a pattern determined by the pattern number represented by the input signal SI and the display board posted on the pattern display window 18, is formed on the work cloth. It is. The stitch data is composed of a needle position signal SH representing the swing position of the sewing needle, and a signal SF representing the feed amount and feed direction of the work cloth, and the needle swing actuator 66 and the feed actuator 68 are The needle bar 13 and the feed adjuster are driven based on the needle swing signal SH and the feed signal SF.

Next, in this embodiment, the operation when patterns of "A" and "B" are alternately formed on the work cloth will be explained.

First, to select the "A" pattern, operate the operating lever 22 shown in FIG.
A movable display board 20A is posted inside. At this time,
In the control circuit of FIG. 4, the limit switch 40 is
It is in the ON state, and an H level display board selection signal PS is supplied to each part of the control circuit. Therefore, in this state, if you specify "20", which is the corresponding pattern number for the pattern "A", using the numeric keypad 34, the input signal SI representing the pattern number "20" is sent from the encoder 42 to the first latch 4.
On the other hand, the two-digit operation signal SO is supplied as a latch signal to the first latch 44 through the first AND gate 48, and the pattern number "20" corresponding to the pattern "A" is stored in the first latch 44. an input signal representing
SI is memorized.

Also, a display board selection signal is also sent to the multiplexer 54.
Since PS is supplied, multiplexer 54
The input signal SI representing the pattern number "20" stored in the first latch 44 is selectively outputted from the latches 44 and supplied to the display operating circuit 56 and the leading address memory 58. In other words, the pattern number "20" is displayed on the display 36.
is displayed, and since the display board selection signal PS is supplied to the top address memory 58, the pattern "A" corresponding to pattern number "20" is selected from the pattern group posted on the display board 20A. The first address is selectively output. Then, the start address corresponding to the pattern "A" selected and output from the start address memory 58 is supplied to the stitch data generator 60, so that when the sewing machine is started, a series of stitches corresponding to the pattern "A" are sewn. Eye data (needle position signal SH and feed signal SF) is output to the actuating actuator 64, and the needle swing actuator 6
6 and feed actuator 68, and a pattern "A" is formed on the work cloth.

On the other hand, when forming the pattern "B" following the pattern "A", operate the operating lever 22 to display the fixed display board 20B in the pattern display window 18, and in this state, Input pattern number “21” using the numeric keypad 34. If you do this,
Since the display board selection signal PS is not supplied to each part of the control circuit, the input signal SI representing the pattern number "21" is sent to the second latch 46, contrary to the case where the pattern "A" is formed. be remembered. Further, the multiplexer 54 selectively outputs the input signal SI stored in the second latch 46. As a result, the pattern number "21" corresponding to pattern "B" is displayed on the display 36, and the start address memory 58
Then, the start address corresponding to pattern "B" is selected, and this start address is sent to the stitch data generator 60.
is supplied to In other words, the pattern “B” appears on the processed cloth.
will be formed.

In order to form the pattern "A" again following the formation of the pattern "B", the movable display plate 20A on which the shape of the pattern "A" is displayed on the pattern display window 18 is operated by operating the operating lever 22. It would be good if you could post it. In this way, the multiplexer 54 selectively outputs the input signal SI representing the pattern number "20" already stored in the first latch 44, and as a result, the pattern number "20" is numerically displayed on the display 36. At the same time, the start address memory 58 selectively outputs the start address corresponding to the pattern "A".
In other words, by simply operating the operating lever 22, the pattern number "20" corresponding to the pattern "A" to be formed will be displayed on the display 36, while the pattern number "A" will be displayed on the display 36.
The state is set in such a way that it is possible to form. The same can be said for the case where the pattern "B" is formed following the pattern "A".

As described above, according to this embodiment, when a specific pattern is repeatedly formed and the patterns selected for one display board are closely determined, All you have to do is specify the pattern number, and then simply use the operating lever 22 to move the display board on which the pattern is displayed to the pattern display window 1.
8, and the troublesome operation of specifying each pattern number each time the display board is switched can be omitted. Furthermore, this is not limited to the case where the selected pattern for the display board is fixed to one, but also for the case where the pattern "A", "I", "A" is repeated on the movable display board 20A. Of course, this has the effect of simplifying the input operation of the pattern number by approximately half. In addition,
As is clear from the above explanation, in this example,
The latches 44 and 46 are respectively connected to the display plates 20A, .
It is said to be a memory means compatible with 20B, and also includes a limit switch 40, and gates 48 and 5.
0, an inverter 52, etc. constitute a memory specifying means. Further, the multiplexer 54 and the display operating circuit 56 constitute a supply means, and the leading address memory 58 constitutes a pattern selection means,
Further, the movable display board 20A, the fixed display board 20B,
The operating lever 22 and the like constitute a pattern group selection device.

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

For example, in the embodiment described above, numerical values in the same range are used for the corresponding pattern numbers 32 posted on the display boards 20A and 20B, but numerical values in different ranges may be used for the corresponding pattern numbers 32, respectively.

Further, the memory means may be a memory other than a latch, and the number of display plates is not limited to two, but may be three or more. However, in this case, it is necessary to provide memory means in a number or location corresponding to the number of display boards.

Further, part or all of the portion surrounded by the broken line in FIG. 4 may be configured by a so-called microcomputer.

Furthermore, the input key need not be a numeric keypad, but may be any other device such as a digital switch as long as it allows the numerical designation of the pattern number.

Although not listed in detail, the present invention can of course be implemented with various modifications and improvements based on the knowledge of those skilled in the art without departing from the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a front view showing the appearance of a multi-pattern sewing machine according to an embodiment of the present invention. 2 and 3 are diagrams each showing the display state of the display board used in the embodiment of FIG. 1, and FIG. 4 is a block diagram showing the circuit configuration of the embodiment of FIG. 2. . 18: Pattern display window, 20A: Movable display board (pattern group selection device), 20B: Fixed display board (pattern group selection device), 22: Operation lever (operation body) (pattern group selection device), 34: Numeric keypad (input key), 36: Display, 40: Limit switch (memory specification means),
48, 50: AND gate (memory specification means),
52: Inverter (memory specification means), 44, 4
6: latch (memory means), 54: multiplexer (supply means), 56: display operating circuit (supply means), 58: top address memory (pattern selection means).

Claims (1)

[Claims] 1. Provided corresponding to each of a plurality of pattern groups,
It includes a plurality of display boards on which figures and corresponding pattern numbers are posted for each pattern in the pattern group, and an operating tool that can be operated to select one of the plurality of display boards, and the operating tool can be operated. a pattern group selection device that selects a pattern group corresponding to the selected display board from among the plurality of pattern groups in conjunction with the selected pattern group; In a sewing machine equipped with an input key for inputting a corresponding pattern number, and a display device for visually displaying the pattern number inputted by the input key, a display panel is provided corresponding to each of the plurality of display boards, and a display device for displaying the inputted pattern number. a plurality of memory means for temporarily storing input signals representing pattern numbers; a memory specifying means for specifying a memory means corresponding to the selected display board in conjunction with selection of a display board by operating the operating body; supply means for supplying an input signal in a designated memory means to the display; and pattern selection means for selecting one pattern from the selected pattern group according to the input signal in the designated memory means. A multi-pattern stitch sewing machine, comprising: automatically displaying a pattern number and selecting a pattern according to an input signal in the designated memory means when switching the display board by operating the operating body.