JP2006034695A - Differential feeding sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a differential feeding sewing machine capable of manufacturing clothes adaptable to various requirements and capable of storing individual pattern data in the grading. <P>SOLUTION: The differential feeding sewing machine comprises a storing means for storing basic data in which various parameters for contraction sewing are set and size data for determining the quantity of variation for modifying prescribed parameters of the basic data according to standard sizes which gradually sets sizes of clothes, a selection means for selecting a standard size, a sewing means for performing the contraction sewing according to the standard size selected by the selection means, a variation quantity adjusting means capable of arbitrarily determining the quantity of variation for each gradually set standard size, and a control means for modifying prescribed parameters of the basic data based on the quantity of variation corresponding to the selected standard size and controlling the sewing performance based on the modified basic data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a differential feed sewing machine.

  Conventionally, in a differential feed sewing machine that performs sewing with a difference in the amount of feed between the upper cloth and the lower cloth, so-called false sewing, the stitched portion is divided into a plurality of sections in order, and for each section. A differential feed sewing machine which can arbitrarily set the section length and the amount of squeeze is used. A differential feed sewing machine has been developed that can register a plurality of sewing pattern data set with various parameters necessary for sewing including the section length and the amount of squeezing for each section and back it up to the EEPROM of the internal storage device. (For example, refer to Patent Document 1).

  Here, “sewing stitches” means, for example, a fabric that becomes an outer side of a fabric that is sewn in two layers (an upper fabric, a fabric on a sleeve side) when sewing a three-dimensional portion such as a shoulder of a sleeve of a clothes. ) Is set to be larger than the feed amount of the inner fabric (the lower fabric, the body fabric), so that the outer fabric is sewn so as to have a margin.

  This embroidery stitching is not necessarily applied uniformly throughout the series of sewing parts.For example, in the case of sleeve attachment, the amount of crease increases as it becomes the sleeve crest, and conversely, the crease increases as it becomes the sleeve lower part. It is common to sew with a reduced amount. In addition, the “weighing amount” indicates a difference in the feed amount between the upper cloth and the lower cloth per one stitch (first stitch, one pitch).

In such a differential feed sewing machine, for example, as shown in FIG. 11, in the stitched portion of the sleeve and the body, it is possible to set the amount of urging on the shoulder side and the side side separately, and so on. 3D and stretchable clothes can be made. In addition, parameters that change according to the amount of each part that has been registered once, the sewing distance, and the size number, for example, a multiplication value that is multiplied by the length of the region, etc., are stored in the internal storage device as a series of patterns. Therefore, by calling this pattern from the internal storage device again and multiplying the predetermined parameter by the magnification, for example, when manufacturing clothes of the same design with different sizes / numbers, the same pattern can be easily obtained. It is possible to perform an urging operation.
JP 2002-307623 A

By the way, it is necessary to sew clothes by changing the dimensions of each part with the same design for each standard size determined in stages (for example, No. 5, No. 6, No. 7, etc.).
Therefore, a technique called grading has been conventionally performed. “Grading” means, for example, when No. 5 is set as a reference size, the value of the sewing pattern data of No. 5 size suitable for the design of this garment is adopted, and other sizes are used in this reference size. With respect to a predetermined parameter of sewing pattern data applied to a certain number 5, every time the number increases, for example, adjustment is performed by multiplying by a magnification value that increases by 3%. On the other hand, when the number is lowered, the multiplication value reduced by 3% is multiplied.
Thereby, it is possible to perform sewing corresponding to a plurality of sizes with one sewing pattern data.

  However, since only a fixed value is proportionally increased or decreased in proportion to the magnification value multiplied for each size, there is a problem that it does not accurately correspond to the actual standard size or cannot be adjusted according to various modes.

  Accordingly, an object of the present invention is to provide a differential feed sewing machine that can manufacture clothing that can meet various needs and can store individual sewing pattern data when grading is performed. .

  In order to solve the above-mentioned problem, the invention according to claim 1 is a differential feed sewing machine that performs sewing by providing a difference in the respective feed amounts of the upper cloth and the lower cloth by the upper feed device and the lower feed device. Sewing means for performing the operation of shampooing, basic data in which various parameters for shampooing are set, and a standard size in which the size of the garment is determined in stages for the predetermined parameters of the basic data Storage means for storing size data for each of the standard sizes, each of which is a value corrected so as to correspond or a variation amount for correction, and size data input means for setting the size data for each of the standard sizes Selecting means for selecting the standard size; and control means for controlling a sewing operation based on the basic data and the size data corresponding to the selected standard size , Characterized by having a.

In the first aspect of the invention, in the differential feed sewing machine, the basic data in which various parameters for performing the sew-on sewing are set, and the garment size is determined individually corresponding to the standard size. Size data composed of values corrected for predetermined parameters of the basic data is stored by the storage means, and the sewing operation is controlled based on the size data corresponding to the standard size selected by the selection means. .
At this time, predetermined parameters are individually set for each of a plurality of standard sizes by the size data input means. Then, when the size is selected by the selection means, the control means reads the size data corresponding to the size selected from the basic data and the size data, and controls the sewing means based on these data to perform the sewing. Execute.

Here, the “predetermined parameter” refers to a parameter that fluctuates with a change in the standard size, for example, a parameter related to the size of the sewing product or a parameter that specifies a sewing range.
In addition, the above-mentioned “size data” is a corrected predetermined parameter value itself developed for each standard size, but works on a predetermined parameter value in the basic data (for example, addition / subtraction / multiplication / division). The variation amount for correction to a value suitable for the standard size may be used as the size data.
The “variation amount” is, for example, a magnification by which the parameter is multiplied for each size, an addition / subtraction value to be added to the parameter for each size, or an increase / decrease value for increasing / decreasing the magnification to be multiplied by the parameter for each size. A general value that can be modified individually.

  According to a second aspect of the present invention, in the differential feed sewing machine according to the first aspect, the storage means includes an external storage device that can be attached and detached in addition to the built-in type internal storage device. To do.

  In the invention according to claim 2, in the differential feed sewing machine according to claim 1, the basic data in which the amount of stuffing or the like is set, and the size determined for each standard size that determines the size of the clothing step by step In addition to the storage area in the internal storage device built in the differential feed sewing machine, the data is also recorded in the storage area in the removable external storage device.

  According to a third aspect of the present invention, in the differential feed sewing machine according to the second aspect, the basic data is recorded in the internal storage device, and the size data is recorded in the external storage device. And

  According to a third aspect of the present invention, in the differential feed sewing machine according to the second aspect, for example, basic data is recorded in the internal storage device by a processing unit that manages each data, and the external storage device The size data is recorded, and the area stored for each data type is sorted.

  According to a fourth aspect of the present invention, in the differential feed sewing machine according to the second aspect, the storage area selecting means for selecting the basic data and the size data so as to be stored in either the internal storage device or the external storage device, respectively. It is characterized by having.

  According to a fourth aspect of the present invention, in the differential feed sewing machine according to the second aspect, each data is stored in either the internal storage device or the external storage device so that the data can be stored by the operator through the storage area selection means. For example, each data is stored in the selected storage device by the processing means that controls the processing of each data.

  According to a fifth aspect of the present invention, in the differential feed sewing machine according to any one of the first to fourth aspects, the basic data includes an urging amount set for each of a plurality of sewing sections that are switched at the time of sewing. The size data input means can set the correction value or variation amount of a predetermined parameter for each sewing section in the size data for each standard size.

  According to a fifth aspect of the present invention, in the differential feed sewing machine according to any one of the first to fourth aspects, the basic data is set with an urging amount for each of a plurality of sewing sections that are switched at the time of sewing. The size data input means sets a predetermined parameter correction value or fluctuation amount for each sewing section with respect to the size data for each standard size. That is, the correction value or the variation amount of the number of sewing sections is individually set in the size data for each standard size.

  According to the first aspect of the present invention, in the differential feed sewing machine that performs sewing by providing a difference in the respective feed amounts of the upper cloth and the lower cloth by the upper feed device and the lower feed device, Since the correction value or variation amount of a predetermined parameter can be set individually for each size, sewing that conforms to a desired standard size can be performed with an arbitrary correction value or variation amount according to the setting. For this reason, it is possible to perform sewing in which the dimensions of each part correspond faithfully for each standard size as compared to the conventional size, or it is possible to manufacture clothing that flexibly responds to size changes.

  According to a second aspect of the present invention, in the differential feed sewing machine according to the first aspect, since the storage means has an external storage device in addition to the internal storage device, a larger amount of sewing pattern data than in the prior art. Can be recorded.

According to the third aspect of the present invention, in the differential feed sewing machine according to the second aspect, the basic data is recorded in the internal storage device, so that the basic pattern is called even if the external storage device is removed. As a result, it is possible to perform at least sewing without grading, and it is also possible to perform sewing at each size by correcting predetermined parameters.
Further, by recording the size data in the external storage device, it is possible to secure a sufficient area for recording the basic pattern data that is the basis of the sewing pattern in the internal storage device. This makes it possible to reproduce basic pattern data, which is important basic data, as needed.
Furthermore, by increasing the capacity of the external storage device, it is possible to record a large amount of size data, and when performing sewing corresponding to various sizes, a complicated operation for corresponding to the size is performed each time. There is no need, and the working time can be greatly reduced.

  According to a fourth aspect of the present invention, in the differential feed sewing machine according to the second aspect, the basic pattern data or the size data can be selected so as to be stored in either the internal storage device or the external storage device, respectively. For example, in the data that you want to record, highly important data or frequently used data is recorded in the internal storage device or external storage device. The recording location can be freely selected. By doing so, when sewing clothes of the same design, it becomes possible to quickly call pattern data stored and stored in advance, and work efficiency can be greatly improved.

  According to a fifth aspect of the present invention, in the differential feed sewing machine according to any one of the first to fourth aspects, the size data input means is switched to size data for each standard size at the time of sewing. A correction value or fluctuation amount of a predetermined parameter can be set and input for each of a plurality of sewing sections. Therefore, since the basic data and the size data are stored not only in the built-in type internal storage device but also in the removable external storage device, pattern data applied to various standard sizes can be stored. Since the numerical value of the predetermined parameter can be varied individually for each sewing section, desired sewing can be performed flexibly in response to various size enlargements.

(Overall configuration of the embodiment)
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The differential feed sewing machine 1 according to the present embodiment is a sewing machine that performs sewing while performing bulging by providing a difference in the respective feed amounts of an upper cloth and a lower cloth to be sewn. It is used for sewing, etc., in which a sleeve fabric as an upper fabric is sewed on the body fabric.

  As shown in FIGS. 1 and 2, the differential feed sewing machine 1 includes a needle movement mechanism that sews an upper cloth and a lower cloth that are respectively fed at a predetermined feed amount, and an upper cloth that is fed at a predetermined feed amount. It has a feed mechanism section and a lower feed mechanism section that feeds the lower cloth with a predetermined feed amount. The needle driving mechanism portion, the upper feed mechanism portion, and the lower feed mechanism portion constitute a sewing drive portion 2 that is a sewing means of the differential feed sewing machine 1.

  The needle movement mechanism unit includes a sewing machine motor 11 that is a drive source, a needle bar 110 that moves up and down in accordance with the rotational drive of the sewing machine motor 11, a sewing needle 111 that is detachably attached to the needle bar 110, and the like. Then, the upper cloth and the lower cloth are stitched together by a sewing thread (not shown) supplied via the sewing needle 111 or the like.

  Here, the direction in which the sewing needle 111 moves up and down is defined as the Y-axis direction (vertical direction), and one direction orthogonal thereto is defined as the X-axis direction (front-rear direction), which is orthogonal to both the Y-axis direction and the X-axis direction. The direction to be defined is defined as the Z-axis direction (left-right direction).

  The lower feed mechanism section includes a lower feed motor 12 that is a drive source, and a lower feed belt 120 that is driven by the rotational motion of the lower feed motor 12 being transmitted through a pulley or the like. Then, as the lower feed belt 120 is driven, the lower cloth is fed in the direction of arrow A along the X-axis direction in FIG.

  The upper feed mechanism section includes an upper feed motor 13 that is a drive source, and an upper feed belt 130 that is driven by the rotational motion of the upper feed motor 13 being transmitted through a pulley or the like. Then, according to the driving of the upper feed belt 130, the upper cloth is fed in the direction of the arrow A along the X-axis direction in FIG.

  Note that the differential feed sewing machine 1 according to the present embodiment is configured to feed the lower cloth with a difference in the feed amount of the upper cloth. That is, when the feed amount (pitch) of the lower feed belt is set, the feed amount of the upper feed belt is set to the difference (feed amount) of the feed amount with respect to the lower feed belt.

(Differential feed sewing machine control system)
As shown in FIG. 3, the differential feed sewing machine 1 also includes a sewing machine motor 11 that drives the needle bar 110, a lower feed motor 12 that drives the lower feed belt 120, and an upper feed motor that drives the upper feed belt 130. 13 and a yarn tension solenoid 14 for applying tension to a sewing thread (not shown). Between the control unit 10 and the above-described sewing machine motor 11, lower feed motor 12, upper feed motor 13, and thread tension solenoid 14, drive circuits 11a and 12a for transmitting drive control signals to the motors and solenoids. , 13a, and 14a are provided.

  The differential feed sewing machine 1 includes a sewing machine starting pedal 15 for operating the differential feed sewing machine 1, and an input circuit 15a for sending a drive input signal to the control unit 10 based on the operation of the sewing machine starting pedal 15. The operation panel 18 includes a display device that displays various setting switches and the like, and a touch panel that detects a position signal based on the coordinates of the various setting switches instructed to be touched.

  Further, the differential feed sewing machine 1 has a step changeover switch for manually switching sections (steps) in which the squeeze amounts described later are individually set in order, and a changeover input based on the operation of the step changeover switch. And an input circuit 16 a for sending a signal to the control unit 10.

  Further, the differential feed sewing machine 1 includes an external storage device 17 to be described later and an external interface circuit 17a for reading data stored in the external storage device into the control unit 10. This external storage device 17 is a so-called flash memory, is easy to handle in that it can be read and written simply by being installed in a slot (not shown) provided in the control unit 10, has a high speed and a relatively large storage capacity, It can be removed from the differential feed sewing machine 1 and replaced.

  The sewing machine motor 11 rotates a sewing machine main shaft (not shown) based on a drive control signal sent from the control unit 10 (MPU 10a) via the drive circuit 11a based on the operation of the sewing machine starting pedal 15. The sewing machine main shaft is connected to the needle bar 110 via a conversion mechanism that converts rotational motion into reciprocating motion. When the sewing machine spindle is rotated by the sewing machine motor 11, the sewing needle 111 provided at the tip of the needle bar 110 is reciprocated along with the needle bar 110 to sew the workpiece (upper cloth and lower cloth). It is designed to drive.

  The lower feed motor 13 is drive-controlled based on a drive control signal sent from the control unit 10 (MPU 10a) via the drive circuit 13a so as to have a predetermined pitch based on the detected rotational speed of the sewing machine motor 11. . The lower feed motor 13 drives the lower feed belt 130 for feeding the lower cloth based on the drive control.

Further, the upper feed motor 12 is drive-controlled based on a drive control signal sent from the control unit 10 (MPU 10a) via the drive circuit 12a so that a difference corresponding to the amount of squeezing occurs in the feed pitch of the lower feed motor. . The upper feed motor 12 drives the upper feed belt 120 that feeds the upper cloth based on the drive control.
As described above, the upper and lower cloths are fed by the predetermined feed amounts by the upper feed belt 120 and the lower feed belt 130, and sewing is performed. Here, the upper cloth can be tempered by sewing the upper cloth with a difference in feed amount of the lower cloth. That is, the amount of squeezing can be adjusted by changing the difference in the amount of feeding between the upper and lower fabrics, and the amount of squeezing can be increased as the difference in the amount of feeding with respect to the lower fabric is increased. .

  The yarn tension solenoid 14 is a drive source of a yarn tensioner device (not shown) that sandwiches the yarn and applies tension to the yarn, and operates based on a drive control signal sent from the control unit 10 (MPU 10a) via the drive circuit 14a. As a result, a predetermined magnitude of tension is applied to the yarn held by the yarn holding portion.

  The sewing machine starting pedal 15 is an operation switch for an operator to operate the sewing machine motor 11. The sewing machine activation pedal 15 gives commands such as start, drive speed, and stop according to the operator's pedal depressing operation and depressing amount via an input circuit 15a that converts the operation of the activation pedal 15 into an electric signal. A drive input signal is output to the control unit 10 (MPU 10a) to drive the sewing machine motor 11.

The operation panel 18 includes a display device such as an LCD as a display unit and a touch panel as an input unit provided on the surface of the display device.
The display device is set for various sewing information output from the control unit 10 (MPU 10a) (for example, a sewing pitch amount (bottom feed amount) relating to the sewing pattern data, a thread tension (thread tension), and a sewing section described later). The display amount (section graphic, etc.) showing the amount of stitching and the sewing section in graphic form, various switches (setting switch, input switch), etc. are displayed.
The touch panel detects coordinates instructed by a touch reading principle such as an electromagnetic induction type, a magnetostriction type, and a pressure sensitive type, and outputs the detected coordinates to the control unit 10 (MPU 10a) as a position signal.

That is, the operation panel 18 displays various information, data, and the like, and associates position information of various switches displayed on the display device of the operation panel 18 with position information of coordinates detected by a touch instruction on the touch panel. The inputted input instruction is output to the control unit 10.
For example, on the operation panel 18, via a set value input key (not shown) as a set value input means, as a set value of a desired sewing pattern, a lower feed amount for feeding the lower cloth, and a differential of the upper feed amount with respect to the lower feed amount An amount such as an amount of obscuration is input. The input lower feed amount and squeeze amount are output to the control unit 10 and stored in an EEPROM 10d or an external storage device 17 described later as sewing pattern data.

(Control processing)
Here, the control unit 10 that is mounted on the differential feed sewing machine 1 according to the present embodiment and controls each part of the differential feed sewing machine 1 will be described in more detail.
The control unit 10 includes an MPU 10a, which is a microcomputer, a ROM 10b, a RAM 10c, and an EEPROM 10d.

  The MPU 10a operates each part according to various control programs for the differential feed sewing machine stored in the ROM 10b according to the drive input signal input from the activation pedal 15 and various signals and data input from the operation panel 18. Centralized control is performed, and the processing result is stored in a work area in the RAM 10c, and display data is generated and displayed on the operation panel 18 (display device thereof). Then, the processing result stored in the RAM 10c is stored in the EEPROM 10d. As described above, the MPU 10a has a function of controlling the driving of various actuators included in the differential feed sewing machine 1, and also a function of display control means for controlling the display of the operation panel 18 (display device thereof).

In the ROM 10b, a control program and control data for the differential feed sewing machine 1 and data relating to various types of sewing are written and stored.
The RAM 10c is provided with various work memories, counters, etc., and is used as a work area during the sewing operation. Various data relating to selection processing of sewing pattern data, display processing related to the sewing pattern data, and false sewing processing are also stored in the RAM 10c. Is remembered.

  The EEPROM 10d is sewing pattern data composed of various sewing condition setting values (for example, a sewing section length (number of stitches), a feed amount (pitch), a squeeze amount, a thread tension, etc.) set in correspondence with a sewing step. Remember. Further, sewing pattern data is input to the EEPROM 10d via the operation panel 18 as storage means.

(Sewing pattern data and basic data)
Here, “sewing pattern data” means the lower feed amount for feeding the lower cloth, the length of each section when the sewing range is divided into a plurality of sewing sections (steps), the amount of squeeze for each section, the thread This is numerical data relating to sewing necessary for performing sew-in sewing such as tension and the number of stitches. In the sewing pattern data, data corresponding to each parameter in a standard size (No. 5 in the present embodiment), which will be described later, is used as basic data.
The “sewing section” refers to each section obtained by dividing the entire sewing area into a plurality of sections, and each sewing section can individually set a sewing section length and a squeeze amount. .

  FIG. 5 is a setting screen for basic data as sewing pattern data. A circular figure displayed at the approximate center of the display screen indicates the entire sewing range of the sleeve. Then, a state in which the section graphic 31 to 38 is divided from the circular figure is displayed, and the entire sewing range is divided into eight for each section (sewing step) indicated by each section graphic 31 to 38. Indicates the state.

  The setting of each sewing section is performed by setting and inputting a section length, and a plurality of sewing sections of each section length are set by a plurality of setting inputs. After that, for example, various parameters such as the amount of intrusion are set. Then, setting is performed for each section. Further, when a series of parameters such as each section length, each squeeze amount, pitch, and thread tension is set, it can be selectively stored in the EEPROM 10d or the external storage device 17 as one sewing pattern data (basic data). it can.

(Size data)
By the way, standard sizes (for example, Nos. 5, 6, 7...) Of clothing are determined in stages, and the above-described basic data is set with numerical values suitable for No. 5, which is a standard size. . Therefore, in order to perform sewing corresponding to other sizes, only a part of parameters of the basic data (in this embodiment, “section length” is subject to correction, but correction is necessary for each size. A correction process called “grading” is performed for a large number of parameters.

  Here, “grading” is a standard size when a standard size (eg, No. 5, No. 6, No. 7,...), For example, No. 5 (gentle size No. 5) is used as a reference size. This means that another size development is performed by using, as a new parameter, a correction value obtained by appropriately increasing or decreasing the sewing section length set in No. 5 according to each size.

  That is, the basic data applied to the standard size and the size data for each standard size indicating the section length value modified to be suitable for each standard size are recorded in the EEPROM 10d or the external recording unit 17, Sewing is performed by calling parameters from these storage means as necessary and creating parameters to be applied to a desired size.

  As described above, in the sewing pattern data, the entire sewing range is divided into a plurality of sewing sections, and a section length is set for each section. Therefore, the control unit 10 can individually set a correction value for each of the above-described sewing sections with respect to the size data of each standard size.

  For example, a new section length can be set for one sewing section separately from the other sewing sections. That is, for one piece of sewing pattern data, a section length corrected for each section in each standard size (for example, No. 1 to 15) is set. A set of corrected section length values for all sewing sections in the entire sewing range is used as one size data for sewing control. The size data is set for each standard size.

(Internal and external storage devices)
The external storage device 17 is an external storage means provided in the differential feed sewing machine 1 so as to be detachable and replaceable, and can record data relating to a sewing pattern in the same manner as the ROM 10b and the EEPROM 10d which are built-in internal storage devices. It is possible.
Here, the storage area in the external storage device 17 in the present embodiment will be described in detail with reference to FIG.

  FIG. 4 is a schematic diagram showing an outline of the storage area of the storage means provided in the differential feed sewing machine 1 according to the present embodiment. As shown in FIG. 4, the EEPROM 10d as the internal storage means and the external storage device 17 as the external storage means are both configured to be able to store and save data relating to the sewing pattern in the same manner.

  The external storage device 17 is preferably a device capable of storing a large amount of information, such as a flash memory. However, the present invention is not necessarily limited to these, and any information storage medium that can electrically and magnetically store information on the created sewing pattern is applicable.

  External storage data management information is written in a part of the storage area of the EEPROM 10d. This external storage data management information indicates, for example, an identification code indicating the presence or absence of address (stored location) data in the external storage device 17 for basic data and size data stored in the external storage device 17. is there.

  Further, the unit storage device 17 may be reused for other types of sewing machines due to its versatility. Accordingly, an identification code is written in a part of the storage area of the external storage device 17 so that it can be identified how much of the recording area exists for which type of sewing machine. This identification code indicates an identification code for specifying the sewing machine of each model in the external storage device 17 and the range or remaining amount (memory remaining amount) of an area that can be stored for the sewing machine.

  For this reason, the MPU 10a that reads basic data and size data stored in the EEPROM 10d and the external storage device 17 and performs control so that the sewing means performs sewing is performed on each sewing storage stored in the internal storage area and the external storage area. Data can be handled in the same manner regardless of which storage means stores the data.

  The external storage device 17 according to the present embodiment is an information recording medium in which basic data and size data of various sewing pattern data can be written, stored, and read as needed, and grading after creating a new sewing pattern. Thus, data for enabling sewing of all sizes created from the basic pattern as a basis can be stored and saved.

  Then, in response to an input instruction when an input key for selecting sewing pattern data on the operation panel 18 is pressed, the control unit 10 functions as a storage unit based on a selection signal (press signal) corresponding to the input key. Control is performed to select desired sewing pattern data from a plurality of sewing pattern data stored in the ROM 10b, the EEPROM 10d, and the external storage device 17.

  Further, based on the size data input on the operation panel 18 (see FIG. 5), the control unit 10 serving as a selection unit includes a plurality of ROMs 10b and EEPROM 10d serving as storage units and a plurality of memories stored in the external storage device 17. Control is performed to select sewing pattern data specified as sewing pattern data of that size from the sewing pattern data.

(Processing associated with input work)
Next, a display screen when selecting sewing pattern data in the differential feed sewing machine 1 according to the present embodiment will be described with reference to FIGS. The display screen examples shown in FIGS. 5 to 9 are displayed on the operation panel 18 of the differential feed sewing machine 1.

The display screen shown in FIG. 5 is an editing screen for displaying the sewing pattern data whose sewing pattern data number is “01”. A display graphic 30 simulating a substantially circular sleeve shape is provided at the approximate center of the editing screen. In this embodiment, the display graphic 30 is composed of eight section graphics 31 to 38 corresponding to eight regions (sections, sewing steps). By showing eight section graphics, it can be seen that there are eight sewing steps in the sewing pattern data.
Further, a selection screen switching key 40 for performing input for selecting sewing pattern data (basic data) and switching to a selection screen (not shown) is displayed. When the selection screen switching key 40 is pressed, keys for designating various sewing pattern data are displayed, and new sewing data can be called by selection input.

The display graphic 30 (section graphics 31 to 38) corresponds to the bottom of the sleeve and the top of the display graphic 30 to the top of the sleeve, and the length of the section graphics 31 to 38 in the circumferential direction is the sewing of each sewing step (sewing section). It is displayed at a ratio according to the length.
Sewing is started from the bottom, and the section graphics are displayed in order from the section graphics 31 to the section graphics 38 so as to correspond to the respective sewing steps in the sewing area of the sewing product in a counterclockwise direction. A state is shown in which the amount of intrusion is set to “8, 0, 8, 33, 35, −1, 0, 1” from the corresponding section graphic 31 to the section graphic 38. It should be noted that the squeeze amount displayed on the display graphic 30 is based on the sneak amount of the sewing pattern data stored in the EEPROM 10 d and the external storage device 17.

  Further, the display graphic 50 shown in FIG. 5 includes the sewing distance in the entire area to be sewn (the entire circumference of the section graphic 30) and the area selected in the setting screen shown in FIG. Equivalent)) is shown in millimeters and is displayed to the first decimal place.

  FIG. 6 is a display screen when setting and inputting values of parameters in grading in the present embodiment. Adjustment of the section length in the section graphic 31 is performed by pressing the variation setting key 41a. An arbitrary value can be set for each standard size. Alternatively, the section length can be set directly by the section length input key 41b. That is, a process for storing the data set by the input of the variation amount setting key 41a or the section length input key 41b as size data in the internal storage means 10d or the external storage device 17 is performed.

  FIG. 7 shows a display screen after the setting input screen is shifted from No. 5 to No. 6, which is the reference size. It can be seen that the section length of the section 31, which is the sewing section set and selected in the present embodiment, is 5.0 mm larger than the reference size (No. 5) shown in FIG.

  In addition, even if the standard size mentioned above is generally the same size, for example, men's clothing and women's clothing have different numbers, and the size corresponding to the same size (sewing distance) also in each country. It is customary to use different names. Therefore, a conversion table for making these correspond to each other is stored in the ROM 10b in advance. For example, when the selection screen of FIG. 9 is called by the input of the standard conversion key 42 shown in FIG. 8 and the female key 43 or the country key 44 is input, the standard size for women or the standard size for each country is set. The input is accepted and the size data of the corresponding size is read with reference to the conversion table.

  Further, the size to be sewn is selected by pressing the UP key 5b or the DOWN key 5c in the size data input key 5, and the control unit 10 as the selection means corresponds to the input numerical value of the size. The size data is selected from the EEPROM 10d as the storage means or the external storage device 17. If size data is not selected, the basic size No. 5 is selected.

(Data processing by the control unit)
Next, processing operations relating to selection of sewing pattern data in the differential feed sewing machine 1 according to the present embodiment will be described based on the flowchart shown in FIG.

  First, after the differential feed sewing machine 1 is powered on, if new basic pattern data is created on the display screen described above (step S101), a new pattern is registered (step S102). Note that the basic data created in steps S101 and S102 is developed on the RAM 10c, which is a work area, and is not yet recorded in the recording means.

  Next, it is determined whether or not the new sewing pattern data created in step S102 is developed (graded) to another size (step S103). Such a determination is made based on whether or not sewing for a size other than the basic size is selected. Grading is not required for basic size sewing. When grading is performed (step S103; Yes), a setting input of size data for each size is received (step S104).

  When the created basic data is not graded (step S103; No), and after grading is selected and size data is set and input in step S104, it is determined whether or not a storage location is designated (step S105).

  Here, in the present embodiment, the EEPROM 10d, which is an internal storage device, and the external storage device 17 can be selected as storage locations for basic data and size data separately.

  In the case where the storage location is designated (step S105; Yes), here, as an example, when it is designated that the basic data is stored in the internal storage device and the size data is stored in the external storage device, Then, it is determined whether or not the internal storage capacity is sufficient to store the basic data (step S106). At this time, if the internal storage capacity is insufficient (step S106; No), an error display process for displaying an error display on the display device is performed (step S111), and the operation is terminated. If the internal storage capacity is sufficient (step S106; Yes), a process of writing basic data to the EEPROM 10d, which is an internal storage device, is performed (step S107).

  After the basic data is written in the internal storage device, it is determined whether or not an identification code is written (step S108). That is, in the external storage device 17 used for the first time by the sewing machine, since the identification code is not yet written by the MPC 10a, first, the presence / absence of the identification code is determined. When the identification code is described (step S108; Yes), it is determined whether or not the external storage capacity is sufficient (step S110). When the identification code is not described (step S108; No), an external storage area securing process is performed (step S109). That is, the external storage area securing process is a process for newly writing an identification code in the external storage device 17 and is executed by designating the sewing machine model name and a capacity for data storage. Then, it is determined whether or not the external storage capacity is sufficient to store the size data (step S110).

  If the external storage capacity is sufficient (step S110; Yes), a process of writing size data to the external storage device 17 is performed (step S112). If the external storage capacity is insufficient (step S110; No), an error display process for displaying an error display on the display device is performed (step S111), and then the operation is terminated.

  If the storage location is not designated in step S105 (step S105; No), both the basic data and the size data are written in either the internal storage device or the external storage device (internal priority). Process.

  First, it is determined whether or not the internal storage capacity is sufficient (step S113). If the internal storage capacity is sufficient (step S113; Yes), a process of writing all newly created sewing pattern data (basic data and size data) to the EEPROM 10d, which is an internal storage device, is performed (step S119).

  When the internal storage capacity is insufficient (step S113; No), it is determined whether an identification code is written in the storage area of the external storage device 17. Here, when the identification data is not described in the storage area of the external storage device 17 (step S114; No), after performing the external storage area securing process (step S115), whether or not the external storage capacity is sufficient A determination is made (step S116). Further, when an identification code is written in the storage area of the external storage device 17 in step S114 (step S114; Yes), it is determined whether or not the external storage capacity is sufficient (step S116).

  If the external storage capacity is insufficient (step S116; No), error display processing for displaying an error display on the display device is performed (step S117), and then the operation is terminated, as in step S111. If the external storage capacity is sufficient (step S116; Yes), a process of writing all newly created sewing pattern data (basic data and size data) to the external storage device 17 is performed (step S118).

  In this way, the processing operation relating to the recording of the sewing pattern data in the differential feed sewing machine 1 according to the present embodiment is performed.

(Effect of embodiment)
As described above, according to the differential feed sewing machine 1 according to the present embodiment, since the size data can be set for each standard size by the variation amount adjusting unit, a desired standard size can be set with an arbitrary variation amount according to the setting. Sewing suitable for can be performed. For this reason, it is possible to perform sewing in which the dimensions of each part correspond appropriately for each standard size as compared with the conventional case, and it is possible to manufacture clothing that flexibly responds to size changes.

  Further, since the storage means has an external storage device in addition to the internal storage device, a large amount of sewing pattern data including size data formed by grading can be recorded in addition to the basic data. . This is particularly effective when a large amount of data is required, such as when size data is set for each standard size.

  In addition, since basic data is basically recorded in the internal storage device, even if the external storage device is removed, it is possible to perform sewing if a predetermined parameter is modified by calling the basic pattern. It becomes possible.

  Further, by recording the size data in the external storage device, it is possible to secure a sufficient area for recording the basic pattern data that is the basis of the sewing pattern in the internal storage device. This makes it possible to reproduce basic data, which is more important basic data, as needed.

  Furthermore, by increasing the capacity of the external storage device, a large amount of size data can be recorded, and when performing sewing corresponding to various sizes, a complicated operation for corresponding to the desired size each time. There is no need to perform the operation, and the working time can be greatly reduced.

  In addition, since the basic pattern data or size data can be selected so as to be stored in either the internal storage device or the external storage device, for example, among the data to be recorded, It is possible to freely select the recording location according to the user's request, such as recording frequently used data in the internal storage device or the external storage device. In this way, it becomes possible to quickly call pattern data stored in advance when sewing clothes of the same design, and work efficiency can be greatly improved.

  Further, according to the differential feed sewing machine according to the present embodiment, the size data input means sets and inputs the section length for each standard size as the size data for each standard size and for each of the plurality of sewing sections that are switched at the time of sewing. Therefore, the numerical value of the predetermined parameter can be varied individually for each sewing section, so that desired sewing can be performed flexibly corresponding to various size expansions.

(Other)
In the above embodiment, a set of correction values of section lengths suitable for the corresponding standard size is handled as size data, but the present invention is not limited to this. For example, a set of fluctuation amounts such as a magnification and an increase / decrease amount for conversion to a section length suitable for the standard size corresponding to the section length in the basic data may be used as the size data. In that case, a process of calculating the section length of the basic data or the actually used correction value based on the fluctuation amount included in the basic data size data is required in advance at the time of sewing.

It is a perspective view of a differential feed sewing machine according to the present invention. It is an enlarged view around the upper feed mechanism of the differential feed sewing machine according to the present invention. It is a block diagram which shows the principal part structure of the differential feed sewing machine which concerns on this real invention. It is explanatory drawing which shows the outline | summary of the storage area of the internal storage device and the external storage device in the differential feed sewing machine according to the present invention. It is explanatory drawing which shows an example of the edit screen in the differential feed sewing machine which concerns on this real invention. It is explanatory drawing which shows an example of the edit screen in the differential feed sewing machine which concerns on this real invention. It is explanatory drawing which shows an example of the edit screen in the differential feed sewing machine which concerns on this real invention. It is explanatory drawing which shows an example of the edit screen in the differential feed sewing machine which concerns on this real invention. It is explanatory drawing which shows an example of the edit screen in the differential feed sewing machine which concerns on this real invention. It is a flowchart which shows the outline | summary of the whole processing operation regarding recording of the sewing pattern data in the differential feed sewing machine which concerns on this actual invention. It is explanatory drawing for demonstrating the grading in the conventional differential feed sewing machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Differential feed sewing machine 2 Sewing drive part 5 Size data input key 10 Control part 10a MPU
10b ROM
10c RAM
10d EEPROM
11 sewing machine motors 11a, 12a, 13a, 14a drive circuit 12 lower feed motor 13 upper feed motor 14 thread tension solenoid 15 sewing machine starting pedal 16 step changeover switch 17 external storage device 18 operation panels 31, 32, 33, 34, 35, 36 37, 38 Section graphic 41a, 41b Fluctuation amount setting key 42 Standard conversion key 43 Ladies key 44 Country key 110 Needle bar 111 Sewing needle 120 Lower feed belt 130 Upper feed belt

Claims (5)

A differential feed sewing machine that performs sewing by providing a difference in the respective feed amounts of the upper cloth and the lower cloth by the upper feed device and the lower feed device,
Sewing means for performing the operation of masquerade sewing,
Basic data in which various parameters for performing false stitching are set, and a value corrected to correspond to a standard size in which the size of the garment is determined in a stepwise manner for the predetermined parameter of the basic data Storage means for storing size data for each of the standard sizes consisting of fluctuation amounts of
Size data input means for setting size data for each stepwise standard size;
Selecting means for selecting the standard size;
Control means for controlling a sewing operation based on the basic data and the size data corresponding to the selected standard size;
A differential feed sewing machine characterized by comprising:   2. The differential feed sewing machine according to claim 1, wherein the storage means includes an external storage device that can be attached and detached in addition to a built-in internal storage device.   3. The differential feed sewing machine according to claim 2, wherein the basic data is recorded in the internal storage device, and the size data is recorded in the external storage device.   3. The differential feed sewing machine according to claim 2, further comprising storage area selecting means for selecting the basic data and the size data so as to be stored in either the internal storage device or the external storage device, respectively. .   In the basic data, the squeeze amount is set for each of a plurality of sewing sections that are switched at the time of sewing, and the size data input means adds the correction value of a predetermined parameter for each sewing section to the size data for each standard size. The differential feed sewing machine according to any one of claims 1 to 4, wherein a variable amount can be set.

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