JPS6192694A - Sewing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Purpose of the Invention (Industrial Field of Application) This invention provides a sewing machine, especially a sewing machine α4, in which a can feeding south is disposed in front of the sewing machine, and in particular, a can feed south is provided at the front and one side of the sewing machine α4. This is about a sewing machine that can change the feeder.・51 (Conventional technology)
When performing criss-cross stitching on item 5, it was necessary to change the feed direction of the main feed dog and sub feed dog during sewing. Therefore, skill was required for the C1 operation.

Also, when using a lockstitch sewing machine to sew with uneven stitches,
There was a method in which the thread tension of the sewing machine was adjusted, the processed cloth was made FiI, and after sewing, the thread was pulled to remove the creases, and then it was rolled out with an iron. However, this method required many work steps and was inefficient.

In order to solve these problems, a cam is connected within the range of the swinging lever that gives feed motion to the feed dog, and the number of swing angles of the lever is adjusted to make it work better with the main feed dog. It has been previously proposed that the cutting ray 11 be automatically set by replacing the cloth feed trough with the auxiliary feed dog. However, in this conventional method (for example, as shown in Figures 1 and 2, the proportion of irregularities in each sewing area Δ to F on the work cloth (hereinafter referred to as "in the midst of irregularities") If you want to change the skewer, you have to replace it with the cam of the specified skewer (CIJ), which has a defect that reduces work efficiency.Moreover, in order to make it possible to sew all kinds of skewers, had the drawback that it required many cams corresponding to each spindle, making it very complicated.

(Purpose) The purpose of this invention is to solve the above problems.
Each feed dog feed center is automatically controlled according to the number of stitches.
The present invention is to provide a sewing machine that can improve the efficiency of sewing tasks such as various types of uneven stitching, and that can be easily used even by non-skilled workers.

(Example) Hereinafter, an example of a sewing machine in which the present invention is integrated into four units will be described based on the drawings.

In Figure 3, sewing machine 1 has a start switch 2 at the lower right side.
is fixed to the table 3 on which the needle/l is arranged, and its child jl needle/l cooperates with the double ring looper (not shown) to form a seam forming opening groove, and forms the double ring stitch on the work cloth K. It is supposed to be formed. IiM the needle hole through which 41 t and 14 pass.
The upper surface of the throat plate 5 and the upper surface of the table 3 form a work cloth support surface, and a main feed dog 6 and a sub feed south 7 are projected onto and retracted from the work cloth support surface. The feed teeth 6.7 and the sub-feed teeth 6.7 are grown at the tip of the presser arm 8, and work together with the presser foot (not shown) to feed the work cloth.
A work cloth feeding device 11 is provided for feeding the work cloth in the opposite direction.

A servo sensor 4t is mounted on the arm 9 of the sewing machine 1, which is disposed on the cloth feed side.
'-10 is attached, and the servo sensor 10 consists of a light emitting element 10a such as a light emitting diode and a light receiving element iQb such as a photoreceptor or transistor, and the light from the light emitting element 10a is embedded in the throat plate 5. The light receiving element 11b detects the light through the reflective plate 11. Then, the side edge Ka of the work cloth passing through the −L side of the fouling plate 11 blocks a part of the light from the light projecting element 10a, and the light receiving element 10b detects the side edge Ka of the work cloth according to the amount of light received. 1 (it is designed to detect a.

On the cloth feeding side of the throat plate 5, a part of a rotary wheel 12 is projected onto the work cloth support surface so as to engage with the machining mK, and the rotary wheel 12 is fixed to the lower surface of the daple 3. A servo motor (see FIG. 5) is fixed to the motor shaft of the SM and rotates around an axis substantially parallel to the direction in which the work cloth is fed. When the servo sensor 10 detects that the side edge Ka of 5K coincides with the center line of the fouling plate 11, the servo motor SM is controlled to stop, and the side edge Ka of the work cloth is When Ka is displaced to the left or right with respect to the center line, the servo motor SM is controlled to rotate forward or reverse, and the rotating wheel 12
The processing cloth K is moved from its side edge Ka to the center II of the reflecting plate 11.
Drive control is possible so that it is located on IIllFpA.

The tip of the support lever 15 rotatably supported by the support 14 on the table 3 has a presser 13 attached to it so as to correspond to the rotation wheel 12, and a pusher 13 is attached to the rear end of the support lever 15. It is designed to be moved up and down by the vertical movement of the screw 16 of the connected air cylinder (refer to Figure 55) S.Thus, when the same suppression roller 13 is processed The rotating wheels 12 work together to hold the work cloth K, move the work cloth I in the lateral direction perpendicular to the feeding direction, that is, left and right, and press the When iJ rises, the pressure on the work cloth is released.

Next, the cloth feeding structure of the first feeding dog 6 and the sub feeding dog 7 provided on the lower surface of the table 3 will be explained.

As shown in FIG. 4, the main feed dog 6 and the sub feed 1f
17 are fixed to the tips of the main feed table 21 and the sub feed table 22, respectively. A feed guide sesame 24, which is connected to a guide shaft 23, is fitted into the two prongs at the rear ends of both feed tables 21.22 so as to be movable relative to the longitudinal direction of the feed tables 21.22, and the bottom surface of the tip A vertically feeding centrifugal cam 26 on a sewing machine main shaft 25 driven by a sewing machine motor (see FIG. 5) MM is connected to the four parts of the sewing machine through an eccentric wheel holder 27.

Accordingly, as the main sewing machine 25 rotates, the vertical feeding cam 26 moves eccentrically, and the main support and sub-1 threading threads 6.7 move up and down in unison.

Next, the front and rear j drive of the main and sub feed dog 6.7, one 1>
I will explain the swinging mechanism in the feed direction that determines the feed h) of the fabric.The amount of swing of the first feed dog 6 is fixed so that the feed nose is constant. Since it is essentially the same as the sub-feed dog 7, only the feeding mechanism of the sub-feed dog 7 will be described below.

The side center cam 28 for surface rear feed shown by the two-dot chain line in FIG.
The proximal ends of 9 are connected. On the other hand, the tips of the rods 1 to 29 are connected to the tips of the swing arms 31 fixed to the swing shaft 30 and the shaft 3.
2) J-tied. Therefore, C1 said sewing machine main l1I
When the ll125 is rotated, the rod 29 is moved back and forth by the front cam 28. Co-moved and swayed I
I! 31, the swing @30 is reciprocated within a predetermined rotation range. The arcuate sending arm 33 is fixed to the swing shaft 30 at its base end and is rotated back and forth as the swing shaft 30 swings back and forth.

The Pulsmoke PM is driven in forward and reverse directions by a drive signal from a control circuit, which will be described later.
5 to the adjusting shaft 36. The adjustment lever 37 is fixed to the adjustment lever 36 at its base end, and the adjustment link 38, which is rotated by the drive of the pulse PM, is fixed to the adjustment lever 36 at its lower end. The distal end of the feed arm 33 is fitted into the G insertion and engagement hole 39a of the sliding block 39 which is rotatably connected to the distal end of the adjustment lever 37. The tip of the adjustment link 38 is rotated by the shaft pin 40 "T"
I'if: is connected. A link 42 is rotatably attached at one end to the multiple sides of the learning top 39, and the other end is rotatably connected to the central side wall of the sub-feed table 22 by a shaft pin 41. ing.

Therefore, as the swing shaft 30 rotates, the sliding block 39 is moved back and forth via the feed arm 33, and the sub-feed table 22 is reciprocated in its longitudinal direction, that is, the cloth feeding direction, via the link 42. . Now, when the pulse motor PM is driven to rotate normally in the direction of the arrow, the 1i! ! Since the three lino separators are moved up and down and engaged near the tip of the feed arm 33, the range in which the 1M movable separator 33 is driven increases, and the fabric feed m (m) of the sub-feed dog 7 is increased. growing.

On the other hand, when the pulse heater PM is reversely driven in the direction opposite to the direction of the arrow, the N-first separator 39 is moved by the adjustment link 38 and engaged with the base end portion of the feed arm 33. ,
The driven range of the IN first sesame 39 is small C1
The cloth feed suspension of the sub-feed dog 7 becomes smaller.

Therefore, with respect to the first feed dog 6 in which the cloth feed thread is fixed, the cloth feed suspension of the sub feed dog 7 can drive and control part of the pulses P to 1, making it possible to control the pulse for the workpiece cloth 1 It is possible to include /
evening.

Next, during the period from starting the sewing of the sewing 5K shown in FIG. 1 to the rear of L to finishing sewing the IiI area Fr, the sewing area C. As shown in Fig. 2, D has different sizing rivers. Sewing area B,
1: For normal overlock stitch (1 feed!'!Tl
A control device for driving and controlling the sewing machine 1 so as to continuously perform operations 6 and 7, in which the feed of the sub-feed dog 7 is the same, will be described. (1) There is a seam area >'IJ in the sewing area B of the processed fabric, and in the seam area U there is a seam allowance J rear P that overlaps two widths with the seam allowance Kb, and the seam allowance Kb is A portion protrudes from the side edge Ka of the processed cloth.

Now, the control device is integrated in the roll box CB to the controller 1 installed on the right side of the table 3 shown in FIG.
On the left side of the entire surface are 5 memory selects that are linked to each other.
-Switch MS1. MS2, MS3, MS4, and MS5 are provided. These 5 circuit memory switches MSI to MS5 cooperate with the mode select switch MSS, which will be described later, to the computer MC, which is built in the roll box CB.
For each sewing area A to F where the sewing method is stomach, 1 stitch requires 1 rear seam allowance U, P, 5
Each area Δ to F- in one sewing pattern (for example, fl pattern for women, women, children, etc.).

When programming the number of U and P stitches (hereinafter referred to as the number of stitches) and sew pattern data, select one of the five sewing pattern programs and operate the sewing machine 1 according to that program. When the selection operation is performed. .

6n installed in the center of the front of the N1 Herol Box CB.
η correction switch S~VA, 5WI3゜S~v
c, SWD, SWE, and SWF are digital switches, each of which increases or decreases the Ise stitch data corresponding to each sewing area A-F on the processed cloth that has been grammed, and changes it to each rear △.・'gitJ with any amount of distortion of F
I can do it J, it's becoming a sea urchin. Therefore, if you want to modify the programmed Ise-komi amount data (without erasing the programmed Ise-komi amount data from the programmed area A), teeth,
Including: By operating the Z positive switch SWA, it becomes possible 11L. .

The erroneous correction switch SWU, which is provided above the erroneous correction switch SW△, is a digital switch, and as shown in FIG. Increase/decrease the number of stitches data that was created last year, and set the seam separation area U on the processed fabric.
It is designed to be sewn C.

1- installed on the right side of the open area correction switch fswu.
The part number ↑ 1 number is correct switch, SW T is composed of tenkle switch, and the total number of stitches in each sewing area A-'-F that has been previously set is 1. Enter 1g! to a predetermined ratio to the number of stitches, and then calculate the number of stitches in each of the programmed areas △ to ``according to the ratio, t, j, 7J quick data/!: Replacement correction C.
1 Sewing the processed cloth K and step 17. It's not obvious.

On the other hand, the data selector switch D S S CJ digital switch provided at the center right front side of ] ] boxes 1 to 0 - box C (3 Now it is time to set the number of stitches for R and the setting data for hanging.

Each time the data input switch INS on the left is pressed, the count and input data set by the data selector switch FDSS are programmed into the microcomputer MC, which will be described later. Display device DS consisting of a 7-segment display tube
The f-evening value is displayed at P. In addition, the ♀1 number indication lamp L1 and the ♀I set indication lamp L2 provided above the data input switch INs indicate the number of stitches -γ-
The lighting is controlled alternately when programming data and reset data into the microcomputer MC in sequence.

The mode selector switch MSS consists of a rotary switch, and can be operated in seven ways. Operated when monitored.

In addition, when sewing the machined rffK according to the programmed program (hereinafter referred to as the first sewing), the mode selector switch MSS selects the sewing data for each of the programmed sewing areas Δ to F for each sewing area. Including I
'! The cases manufactured by modifying them based on the selection operations of iE switches SW△ to SW
(referred to as IW), to each programmed sewing area A.
Based on the selection operation of WT, when converting to a predetermined ratio and sewing a piece of work cloth with the converted nail (hereinafter referred to as third sewing), each of the above-mentioned B]cogrammed sewing areas Δ ~・F's ↑4 attack data and set-up lifting data are converted to a predetermined ratio based on the l--tal stitch number correction switch SWT, and processed based on the converted number of stitches and set-up lifting data. /Ii When sewing K (hereinafter referred to as 4th sewing), the programmed sewing stop data of the sewing area △~F is sent to the sewing correction switch SW△~SWF. 11 sheets data of each sewing area A-F and the above-mentioned (r-corrected set-up hanging data) are converted into a predetermined ratio for 13 by the above-mentioned 1 hetal '11 run adjustment switch S W T. Then, process based on the number of stitches and the hanging data (5
Five methods can be selected for sewing 1.

Next, the control circuit built into the control box CB will be explained.

In FIG. 5, the microcomputer MO has a central processing unit (CPU) and a read-only memory (Rea).
d0nly MemorV) ROM, and memory that can be read and written to (Ranrrom A c
cess Memory) RAM and I/'O boat [
It is combined with OP. Each input terminal of the I, , -' O board IOP is provided with the above-mentioned and seventh select switches MS1 to MS5 . MSS, Iset included, open area and total stitch count correction switch - 3WA-8WF, SWU
, SWT, data select and data input switch DS
The output terminals of S, INS, and start-up switch f2 are connected to each other, and to the output terminal of IOP, a sewing machine drive circuit 51 for driving the sewing machine motor MM, and the above-mentioned pulse A pulse motor drive circuit 52 that drives and controls the motor PM, a cylinder drive circuit 53 that drives and controls the air cylinder PS, and the servo motor S.
A servo operator drive circuit 54 that drives M on the drive side (20), a display drive circuit 5 that drives the stitch number indication lamp L1, the setting indication lamp L2, and the display device DSP on the drive side.
5 input terminals are connected. Further, at the input terminal of the I10 boat IOP, there is a needle position detector 56 for detecting the needle position of the sewing needle 4 based on the rotation of the main sewing machine 1M25, etc.
The output terminal of a stitch number counter 57 that counts the number of stitches based on the detection signal of the detector 56 is connected.

On the other hand, the memory RAM that can be read and old
The memory select switch NII 31 =MS
5.7 - Based on the operation of the data input switch DSS and the data input switch INS, five gJ turn sewing programs for the workpiece cloth K are stored in memory, and each sewing area A to F of the same sewing program is stored in memory. Each driving rotation speed of the pulse motor corresponding to the initial lifting data is stored in memory.

Next, the method of using and the operation of the sewing machine constructed as described above will be explained according to the flowchart t--1 of the control program of the microcomputer MC shown in FIGS. 6 to 10.

First, the sewing program (sun boat program) is read out from the microcomputer MC's old memory (
A method of writing to RAM (hereinafter referred to as memory) will be explained.

Now, the control circuit's power supply JQ switch (shown in the diagram)
) on the microcomputer MC, the initialization is I7.
The reset routine 61 resets various registers, flags, and the like. Next, the operator switches the ``L-delect'' switch MSS to the program, and also switches the 5 memory select switches \=+S i-・M S
When the memory select switch N431 of No. 5 is pressed, the memory select signal SGM1 of the reselect switch 1 to switch MS1 is inputted via data and stored in the register. MSSP is input and stored in the register. Based on the gram signal MSSr'1,
7-1 - The program address shown in FIG. 7 is reached through the fL check routine 62 which determines whether the select switch MSS is in the program.

When the program address is reached, a routine 63 in which the central processing unit CPU calculates the main select signal SGMS1 of the memory select switch MSI, stores the calculated value in the register, and selects the main select signal SGMS1 from among the five sewing patterns. 1 - Address PO1 is reached through a routine 64 which stops at switch MSI and instructs the address at which the sewing pattern program is to be written to the RAM.

Then, the control program sequentially stores the predetermined counting technique and cut amount data for each area A to F, tJ, and P shown in Table 1 of the attached sheet at a predetermined address in the memory RAM. First, based on the tightened contents of the display instruction register, which will be described later, routine 65 displays the sewing area for inputting data into the display device DSP (in this case, the display register is initially cleared). Because there are
The display on the display device DSP will be rA'--J) Turn on the wave stitch number indication lamps 1 and 1, and start the Ise-in-instruction run IL2.
A routine 66 that outputs a drive signal to the display drive circuit 55 to avoid turning off the light instructs the operator to input the number of stitches data for the 6-bottom manufacturing area A. Further, the program moves to address PO2, and a routine 67 inputs the set mode selector signal MSSP and memory select signal SGMS1. A check routine 68 to determine whether or not the data select switch DSS and the data input switch INs have been operated, that is, a check to determine whether or not count data has been input to the IJ area 61. The loop continues through routine 69 and back to routine 67.

Then, while continuing to go around this loop, when the operator sets the data select switch DSS to the count in the sewing area A of the work cloth and then presses the data input switch INS, the sewing machine exits the loop and the same data Select switch oss1. :uzu<1;"1 Therefore, the routine 70 stores the data at a predetermined address in the memory RAM, and displays the first shift of the same stitch number data on the display device DSP for a predetermined time (for example, when the number of stitches is 40, [△40J is displayed, and after a predetermined period of time the number (i7+111 disappears and r A-
, -J) routine 71 to the address next to the address of the memory RAM where the needle error data was stored in light C1, and the next 61 yen.
Eli? When the count data in the G2 M area 8 is stored in a predetermined address of the memory RAM in this way, when the routine 72 for storing the data (increment instruction) is reached, the display instruction register to be described later is stored. A routine 73 determines whether the value is 6 or not (in this case, it is cleared to O), and a drive signal is sent to the display drive circuit 55 to turn off the stitch count indicator lamp L1 and turn on the counterclockwise setting indicator lamp L2. The process moves to the PO3 address via the output routine 74.

When moving to address PO3, a routine 75 inputs the mode and memory select signals MSSP and SGMS1, and a check is made to see if there is a switching change of the mode and memory select i-switches MSS and MS1 based on the select signals @vss1 and SGMS1. and a check routine 77 that determines whether or not the data select switch DSS and data input switch INS have been operated, that is, whether or not the uneven hanging data for the sewing area A has been input. The loop continues, returning to routine 75.

Then, while the worker is sewing around the loop, the worker presses the data select switch DSS to the sewing area A of fli K.
According to the pull-up setting, then turn on the data input switch IN.
Press S to exit the loop and go to the same &1 made area △
A routine 78 for storing the amount data of the amount of loss in the memory RAM, and the value of the amount data of the amount of loss is stored in the display device DSP.
for a predetermined period of time (for example, I
Match rA1. ] is displayed, and after a predetermined period of time, only the numerical value disappears and becomes rA--J) 7 routines, memory RAM
The address of P
Return to OIi ground. Then, based on the value of the display instruction register 81 added by the router 65, the display device DSP displays the sewing area B (rB--) to which data will be input next, and the routine 6
At 6, ↑, 1st attack instruction run L1 is lit, Ise-komi indicator 11-2 is turned off, and the progera l\ is again set to P 02 address →]] 03 address - P 01 address > A large loop such as PO2 address is repeated until the number of shifts of 1 in the display instruction register becomes 6.

Then, each switch D
Operate SS and INS to go around this large loop, and during one cycle, sequentially change the number of stitches and the hanging arc from sewing area B to sewing area F in the same way as in the case of sewing 1) 7 above. The information is sequentially stored at predetermined addresses in the memory RAM.

Sewing 1 rear F ↑1 number and early f-evening including ise is memory R
It is stored in AM, that is, it goes around the loop 6 times and returns to PO1.
When the address is reached, in the routine 01, the display instruction register is set to 6 (J+OH), 11n is marked, and the stitching area U is displayed r tJ --J for inputting the next data to the display device DSP. At the same time, in routine 66, the number of stitches display lamp 1-1 is turned on, and the setting indication lamp L2 is turned off.
Move on to the operation of storing the stitching area data of K (J) in the memory ``GΔM''.Then, the operator selects the data select switch...
One! , press the data input switch INS, and
When the 17-digit value is stored in a predetermined address of AM, a routine 73 determines whether the value of the display instruction register is 6, a routine 82 that adds 1 to the display instruction register, and a routine 82 that adds 7i to the display instruction register. The display device D based on the value of the register.
SP displays the seam allowance rear P (display of rP--J) to which data will be input next, and reaches address PO4.

When the control program reaches address PO4, the control program selects the set mode and memory select signals MSS1 and SGMS1.
and both select signals MSSP.
, SGMS1, a check routine 85 for determining whether or not there has been a change in t71 of both 7-tooths and memory select switches MSS and MS1, and a seam allowance 1 by operating the data select switch DSS and data input switch INS. Check loop to determine whether or not the rear P's Sengen Gator has been stored in the memory RAM. 1) Go through 8G and continue the loop returning to routine 3/I.

Then, while going around this loop t-J, the operator presses the data select switch DSS to match the number of z1 placed in the seam allowance area P () on the work cloth, and then presses the data input switch fNs. Then, the routine 87 extracts (-) from the loop and stores the ♀1'' number data based on the data select switch l) at a predetermined address in the memory RAM.
, the value of the same stitch count data is displayed on the display device DSP in the same manner as above.
After a routine 88 for displaying a display for a predetermined time and a routine 89 for clearing a display instruction register after the predetermined time,
Return to the main address and press the memory select switch MSI.
The operation of loading the sewing pattern program based on the above into a predetermined address in the memory RAM is completed.

Similarly, the other four circuit memory select switches MS2 to MS
By sequentially operating 5, sewing patterns based on each memory select switch are stored in the memory RAM as shown in Table 1 above.

Therefore, in this embodiment, there are five P in the memory RAM.
jf, l pattern programs are stored.

Next, read and write memory RAM as described above.
This section explains the case of criss-crossing the workpiece cloth 1 based on the sewing program loaded into the sewing machine.

First, the relay left switch MSI is selected, and the memory select 1 is set to the memory RA by the switch MS1.
A description will be given of the first sewing (If) in which sewing is performed based on the stitch count data and the setting data according to the program of the sewing program written in M.

Now, from the state where the memory relief 1- switch/IS1 is pressed, the operator switches the mode select switch MS S to the first stitch 1ffR+, , :, and then turns on the power to the control circuit main f- (as shown) As shown in Figure 6, J
, sea urchin+if-note-iniji V-rise routine 61 through the check routine 62, the same selection is made based on the mode select signal MSS1 outputted when the mode select switch MSS is switched to the first sewing]・Main The sewing address shown in FIG. 8 is reached through a check routine 90 for determining whether or not 7-M5S is on the monitor.

When the control program reaches address N, the mode select signal MSS1 from the mode select switch MSS is
and a routine 91 for inputting the memory select signal SGM1 from the memory select switch MS'1, both select switches MSS.

The loop continues through a check routine 92 for determining whether or not there has been a switching change of the MSI, and a check routine 93 for determining whether or not the start switch 2 has been pressed, and then returning to the routine 91 again.

Then, when the author turns on the starting switch 2.

One friend () comes out of the loop and outputs the memory select signal S.
A routine 95 for storing the selected signal S GMS 1 is reached via a routine 94 in which GMS 1 is selected. Poppy mates%M
The sewing program is read out in S1. Next, the routine 9G inputs the mode select No. 18 M S Sl, the check routine 97 determines whether or not the sewing is the fifth sewing based on the [-1-ZELEC1~ signal MSSI], and the A check routine f-98 for determining whether the sewing is the fourth sewing or the hundred, a check routine 99 for determining whether the sewing is the third sewing, and a check routine 99 for determining whether the sewing is the second sewing. After passing through a check routine 100 for determining, the program data shown in Table 2 of the attached sheet is created in order to perform the first sewing based on the reading of the sewing program read out. After passing through routine 102, address SO1 is reached.

In addition, sewing completion numerical data XA to X for sewing areas Δ to F
F, Sewing start position stitch count data of sewing area U xU
And the sewing completion position stitch number data of the seam allowance area P x P is XA=Aa.

XB=Aa+Ba.

To XC-a + 1-3a + Ca.

XD-Aa −+-Ba +Ca +l)a
.

XE- to 01-mouth n + Ca + Da + [a
.

XF=△a1-MiQ-ToCa+[)a+'a+
Pa.

X (J = Aa -1-l3aua.

X P ””Aa −) 13a lJa +
Pa.

Aa; Number of stitches data for sewing area A Ba: N"A work") 7B(1)'J=+tXIF
-Ta Ca; Stitch count data for sewing area C Da; Sewing tabby Ea for sewing area D; Stitch count data for sewing area E ``a: Sewing area'' ↑[7゛-ta Ua; Sewing area Number of buttons f-ta Pa; number of stitches in seam allowance area 1] -7 to -ta.

Therefore, from then on, the sewing machine 1 (:1) is driven and controlled according to the data.

When the control program moves to address SO1 as described above, based on the starting switch 2, as shown in FIG.
A routine 103 outputs a drive signal to the sewing machine motor drive circuit 51 to drive the sewing machine motor MM, and when the sewing machine motor MM starts driving, the small data YA to be set in the sewing area is read out, and the same data in the sewing area A is read out. The same pulse motor P is used to drive the pulse smoke PM and make the feed speed of the sub feed dog 7 larger than that of the main feed dog 6 so that the uneven sewing corresponding to YA can be performed.
SO2 is passed through a pulse motor drive subroutine 104 which outputs a control signal for driving and controlling M to the pulse drive circuit 52 and a routine 105 which increments the data and reads out needle instruction data XA for completing sewing 1 stitch.
Reach the street address. Therefore, at the same time when the sewing machine 1 starts driving, criss-cross stitching in area A made of the work cloth I is started.

Then, along with driving the sewing machine motor MM, a routine 106 counts the 11-gk counter l-1 word from the ↑1 fault counter 57 and displays the number of stitches, and data of the number of stitches completed in the sewing area x The loop continues through a check routine 107 in which the count by the counter 57 is compared to determine whether sewing is completed in the sewing area Δ, and then the routine returns to the routine 106 again.

Then, as soon as the sewing of sewing area A is completed, the loop is exited by 11G, the data is incremented, and the erging data YB of sewing area B is read out. YB (In addition, in this embodiment, as shown in FIG. 2, in the sewing area B, 11 offset stitches are not performed, so the operator YB is based on the above 11 offset stitching data YA. A pulse motor drive routine 109 and a pulse motor drive routine 109 for driving and controlling the pulse motor PM based on the normal rotation of the pulse motor PM is returned to the original position. Inflate the data to fit the sewing area U! Yoibuy 1,1 streak data ×
1 is read and reaches address SO3 via routine 110.

When the sewing start position stitch number data -j゛-ta×U and the counter 57
The process continues through a check routine 112 that compares the count with the count of 19717 to determine the start of 61 stitching, and then returns to the routine 111 again in a loop.

Then, as the first stitch of the sewing area B progresses and eventually the sewing of the same stitching area (1 part) is started, the loop 1iFf is pulled out (output). A control signal is sent to the motor drive circuit 54, and a cylinder drive circuit 53 is sent to the cylinder drive circuit 53 to raise the pressure roller 13.
-USO4? l
(on the ground) That is, here, when the work cloth K is fed by the main and sub feed dogs 6, 7, etc. as shown in FIG.
The same processed cloth) Kuno seam division area (J! in 'JJ
Before feeding the work cloth 1 into an upright position 1, the servo sensor 10 detects the side edge Ka of the work cloth, and the pressure roller 13 presses the work cloth K, and at the same time controls the rotation of the rotary wheel 12. The work cloth K is guided to the regular sewing position. However, the 1970 part of the stitching mentioned above! When the sewing starts, the seam allowance +<b protruding from the side edge Ka of the work cloth hits the reflector 11, even though the work cloth K is sent to the normal sewing position. There is a risk that the servo sensor 10 may cause rapid cutting. However, in this embodiment, the rotation wheel 12 is rotated until the seam allowance Kb completely passes through the sewing position, that is, until the seam allowance ball rear P portion II'M is completed.
Therefore, there is no possibility that the loe cloth 1 will be deviated from the normal sewing position due to a malfunction of the servo sensor 10.

When the sewing of the seam 1970 part is started as described above, the stitch number counter 57 counts the f1 count signal to calculate the number of stitches. I completion 11'L stitch count data XP is compared with the 21st count determined by the counter 57 to determine whether sewing of the seam allowance area P is complete.
16 is light, and the loop returns to routine 115 again. Then, sew the seam allowance area P! When the stitching is completed, the loop is exited, the data is incremented, and the sewing complete number data XS of 5m'FJ area B is read out.The size routine 117 and the increased pressure 1
”-The roller 13 is lowered, and the rotary wheel 12 is rotated based on the detection signal of the servo sensor 10, and the work cloth K is lowered.
The control 60 signal is sent to the air cylinder and the Bomoke drive circuit 5, respectively, so that the signal is sent to the normal N74M position.
3. Return to routine 118 to be output to '54, and stitch the VJ stomach in the remaining portion of sewing area B.

Then, based on the routine 119 for reenacting the 21st revision, the number of stitches, and the '61 tear completion z1 attack data XB, etc.
・The loop consisting of the check routine 120 that determines whether sewing of area B is complete is continued.

Sewing - [When the sewing of the rear B part is completed, the above-mentioned loop is removed, and the next sewing area C is crimped and hung r゛-
Routine 121 for reading the data YC!
, and then passes through a pulse motor start-up subroutine 122 which controls the normal rotation of the pulse motor PM, and then proceeds to a routine 123 which reads out the sewing completed nail fetter XC of the next sewing area C. 1π), when the sewing of the workpiece cloth 1 is transferred from the sewing area B to the seam I-seam J-Rear C, the pulse motor PM is immediately controlled to rotate in the forward direction, and the sub-feed is controlled to correspond to the above-mentioned sagging lifting data YC. The feed amount of the teeth 7 is adjusted, and criss-cross stitching is performed on the work cloth K. Then, a loop consisting of a routine 124 that calculates a count based on the number of stitches counter 57, and a check routine 125 that determines whether sewing is completed in the sewing area C based on the same number of stitches and the completed sewing number data xC is executed. Keep spinning.

When the sewing of the sewing area C is completed, f) G SC
Handle the loop () and go to the next sewing area D, 7/
Quick data YD (in this example, sewing jll!j area 1
) is larger than that of sewing area C, so the same unevenness hanging date lZ Y D is set as 1. In routine 126, which generates the same data Yr), the pulse motor PM is adjusted to the increment amount (P1 rotation rotation control i).
After passing through the 1D pulse motor drive subroutine 127,
A routine 128 is reached in which 5 data of the number of completed layers of sewing of the next sewing area D x D are sold. Therefore, when the sewing of the workpiece cloth 1 is moved to the sewing area D, the pulse motor PM is immediately controlled to rotate in the forward direction, and the sub-feeder 7 is adjusted in response to the lifting data YD including the above-mentioned IC. The feed hanger is adjusted, and the sewing is performed on the workpiece cloth K in step 1, and the routine 129 calculates the number of stitches by reading the stitch number counter 57. The loop consisting of a check routine 130 for determining whether sewing of the lower rear D is completed based on xD continues.

When the sewing of the sewing area D is completed, the loop is pulled out and the hanging data YE of the next sewing area E is created.
(In this embodiment, the offset in the sewing area E is the same as the offset in the sewing area C.) Therefore, the data YE for the same offset is calculated by subtracting the increase J1 (, and 1tff as is). Based on the routine 131 that reads out the data YE (which has been set) and the pulse [-
After passing through the pulse drive signal routine 132 for controlling the reverse rotation rotation, a routine 132 is reached for reading data on the number of completed stitches (XE) of the next sewing area F. , t, L, when the sewing of the work cloth 1 is moved to the sewing area E, the pulse motor l) M is the reverse rotation ii + I fa
l+ is applied, and the feed/pull of the sub-j slotted tooth 7 is adjusted according to the above-mentioned set-up amount data Y[4t, and set-up FJ blue is performed on K of the tin I cloth. 1, a routine 1 calculates a count based on the counter 57.
34th and times? The loop consisting of the boo-nick routine 135 that determines whether the sewing of the sewing area E is completed by adding a star to the first attack and the data of the number of completed sewing stitches x 1 is continued.

Then, when f315 and f17 in the sewing area E are completed, the loop is exited and the next Iff %j area E's sewing data YF (in this embodiment, the sewing in the sewing area F is Since this is a normal double chainstitch in which no interlock stitching is performed, the same interlock stitching is performed. Routine 13 for reading out the information (calculated and set for the field required to rotate the pulse motor P~1 in the reverse direction)
6, and the pulse motor drive subroutine 137 for controlling the reverse rotation of the pulse motor PM based on the same data YF, and the next sewing: 4jX completed needle teaching data XF in the dying area F.
() to a routine 138 for reading out the data. Therefore, when the sewing on the work cloth moves to the 61 product area F, the pulse motor PM is immediately controlled to rotate in the reverse direction, and the feed amount of the m1 feeder 7 is changed to that of the main feeder 6 in response to the r sewing data Y. Normal 2Φ chain stitching is performed on the workpiece cloth K by adjusting to match the feed hoisting.Then, 1) a routine 139 for calculating the count based on i1 ↑ 1 failure force unc 57 and the same number of stitches; Based on the completion count data XF and the completion count data XF, the loop consisting of a check routine 140 is continued to determine whether the sewing of the ring area F is completed, that is, the sewing of the work cloth 1 is completed.

Then, when the sewing is completed in the sewing area [1]
The center outputs the loops No. 11 and 1) outputs the stop signal for stopping the sewing machine motor M1 to the sewing machine motor control circuit 51 No. 0, and then outputs the work cloth K. When one stitch of sewing is completed, the machine returns to the main address again and prepares one stitch for sewing the next piece of work cloth.

In addition, in this embodiment, based on the memory select MSI, <
Although the Iff pattern has been described, even if the other memory select switches MS2 to MS5 are appropriately selected, the equation 2 will not be satisfied based on the data program of each sewing pattern stored in the RAM shown in the equation 1 above. 1st as shown
The data for al'ffR is created in the same manner as described above, and the work cloth can be sewn in the same manner as described above.

Therefore, the setting speed of each of the 11 stitches on the work cloth can be set appropriately and for each part, so that the efficiency of the sewing work can be improved and even non-skilled workers can Can be easily used.

Next, the pulse motor drive subroutine 104' for controlling the pulse motor PM will be explained based on FIG.

Now, when the sewing of the sewing area △ is started, the sewing R-meter YA of the sewing area △ stored in the routine 102 is read out, and the microphone input button M is read out.
1 self ↑ is included in the register of C. Now, pulse motor PM
is rotated 6 steps forward from the original position (the rotational position of the pulse motor PM when no erging sewing is performed), the erging ψ deke YA of the sewing worker lift A, that is, the sewing area A1 :If it matches the feed state of sub feed dog 7 in
- He has been tricked and given two orders. Then, the routine 1
At step 03, when the drive of the sewing machine motor MM is opened, a drive signal is outputted to the pulse drive circuit 52 in order to rotate the pulse smoke P to 1 in the forward direction by one step, and F-9 stored in the register straddles the bamboo and decreases by 9
a check routine 142 for detecting a positive potential detection signal output from the needle position detector 56 when the sewing needle 4 reciprocating up and down reaches the uppermost position;
The check routine 1 passes through a routine 143 for counting the number of aM stitches and a check routine 144 for determining whether the number of aM stitches has reached 3 after reaching the irises.
Go around the loop returning to 42. Then, when the sewing needle 4 has sewn three stitches, the loop is handled and the pulse drive circuit 52 drives the drive number 13 that rotates the pulse motor PM one step at a time.
Routine 145.1 ν1 register j゛-
A rubon 146 that correlates 9 values to 11, and a check routine 1 14 that determines whether the subtracted data value is O or not.
7, the loop returns again to the check routine 142 and continues 1-J<;r.

Then, the same step motor P M Lt sewing needle 4 is J33
Each time the needle is sewn, it is rotated by one step, and the rotation is controlled intermittently up to 6 stitches. Therefore, since there is no sudden change in the feed suspension of the /f sub-feed dog 7, JIB r ([J
Kl, make the transition part of the sewing very neatly 1
- can be obtained.

Similarly, each pulse motor drive subroutine 109.1
22,127,132. 137b Stores the lifting data YB, YC, YD, YE, and YF in registers, and rotates the pulse motor PM forward or backward by one step every time the sewing needle 4 sews three stitches based on the same data. As shown in FIG. 11, the rotation is controlled by each predetermined step.

Next, the second sewing is performed, that is, each sewing area Δ...F of each N product program shown in Table 1 stored in the memory RAM.
Based on the above-mentioned operation of each of the above-mentioned Isekomi th PL positive Smeich SWA to SWF,
The case where the pressure cloth K is sewn and pulled will be explained.

Now, the coworker presses the memory select switch MS1, and then slightly corrects the notation of each 51 product area A to F and the data YΔ to YF, and then sews the work cloth 1.
The correction amount is applied to each of the above-mentioned offset switches SWA to SW.
F, then operate the mode select switch MSS for the second sewing, and then press the start switch 2, the specified control program will change to the mode output from the mode 1-select switch \4 SS When the select signal MS$2 is activated, as shown in FIG.
・Ise-included final Masanobu “”i output from ~S W F
Calculated based on S GS W A = S GS W F; Kudzu + E offset amount (±ΔA) ~ (±ΔF)
A routine 151 for creating a data graph shown in the person 33 and a routine 15 for storing the data.
2 and reach the SO1 address. Hereafter, as shown in Table 371
- Based on the data, the same 5゛ as in the case of the first sewing)
The processed cloth I is made of r1.

Therefore, each of the above-mentioned counterclockwise correction switches SWΔ-1SWF
, and set mode select 1 to switch MSS to 2.
By simply switching to sewing, it is possible to easily make various corrections to the sewing areas 8 and 8 of the preset sewing program and tear the pressurized cloth K at t5.

Similarly, other memory select switches tvl S 1-
1-M55 as shown in Table 1"c above, the data tab [J
Based on the gram, +'+rf notation as shown in Table 3.
The data for sewing is made in the same way as above, and the processed cloth is made in the same way as above. ! ! I can do 7 things.

Next, in the 3rd h■, 1) each sewing area Δ of each sewing program shown in Table 1 stored in the memory RAM
Regarding the case where the stitch count data of ~F is converted to a predetermined ratio based on the operation of the 1-tal stitch count correction switch SW, and the processed rliK is sewn based on the converted stitch count. explain.

C1 Now, the worker presses the memory select switch MS1, and then changes XF to a predetermined ratio to the number of stitches i-ta △a''Fa for each sewing area A. Add 1 piece of work cloth to 1 piece of work cloth (%j!
Thereafter, the mode select switch MSS is operated to change to 713 sewing by 1.7J. Then, when the start switch 2 is pressed, the control program is started from the mode select 1 switch MSS.
Based on S3, as shown in FIG. 8, from the nine check routines shown in Table 1 (1-2 of the manufactured program, the total: 1.'7, -f output from the switch SWT) The ratio of performance based on the total correction signal S G S W T (=1+V, '100.V: Lid set in total
), the address S01 (, - is reached through the routine '153 for creating the task program η shown in Table 4 and the routine 15L4 for storing the data).

Thereafter, based on Table 4, the work cloth 1 is sewn in the same manner as in the first sewing described above.

Therefore, according to the above +--Tal modification, (Tchi S W T' is made bI and mode is rectmates-FMSS 3rd.
By simply switching to sewing, the number of stitches, that is, the number of stitches, in each sewing area A to F of the sewing program for a preset workpiece cloth K can be easily adjusted. , processing rj+b with different speeds makes it easy to sew.

Similarly, other Meshireseleku i-Meitch MS2-1~・I
If S5 is selected appropriately, the data for the third sewing will be set as shown in Table 4 based on the data program of each sewing pattern.

'IT 'E' and processed as above
jjfi I can stomach it.

Next, during the fourth sewing, the counting data and the lifting data for each sewing area A to F of each sewing program are Mj.
A case will be described in which the total needle count is converted to a predetermined ratio based on the operation of the positive smeach SWT, and the processed fi K is made b2 based on the converted count and the setting speed.

Now, as in the case of the third sewing, the joint worker uses the memory select switch MS1 and the total number of stitches correction switch SWT.
, then switch to mode select 1 M S S
switch to the 4th sewing mode. Then press start switch 2 to select shipping mode! - Based on the mode select signal MSS4 outputted from the switch MSS, as shown in FIG.
k [7 Positive switch △WT Ratio calculated based on total correction signal 5GSWT output from T (-1±
V,,/100, \51:1~-tal 1;
According to the setting (direct) with the forward switch S W T, Table 5
Routine 155 for creating the data program shown in ! and Routine 1 for storing the data! 5 Ci is light i
Reaching the mountainous area of 801 of record n, 1.Therefore, just operate the 1-1 tal rectification switch 3WT and switch the mode select/7]・switch N, iss to 4th hand; Each of the 4-sewing programs for the predetermined workpiece fabric I<1%-T-F is relatively easy to count and hang up (! [ffl), so it is possible to correct the size. It is possible to easily sew a different processed cloth, and at this time, since the sizing is corrected relative to the number of stitches, if the size changes more than the predetermined processing mK size, the third sewing In this case, it is possible to sew processed cloth without the problem of the stomach becoming loose or tight.

Next, in the fifth sewing section, move to each sewing area 8 of each of the above 6 tapes. The stitch count data of the same areas A to F and the corrected offset amount data are converted to a predetermined ratio based on the above 1 to -tal β positive mei'FSW king. , Part 1
1 Fallen! A case will be explained in which the amount data Jj% is used to sew the F city K.

Now, in the same way as the first adjustment of the second sewing, the co-worker uses the memory select switch MSI and each adjustment switch SWA~
Operate SWF? At the same time, operate the total needle attack and control switch S W T as in the case of 'J Ta, then operate the above-mentioned select switch SW King, and then press the mode select switch~ +SS for the 5th stitch. Then, when you press the start switch 2,
Based on the mode select signal MSS4 output from the mode select switch MSS output from the mode select switch MSS, as shown in FIG. l
o2 '14 program and the erratic step-down 1 word S G from the erratic correction switches SWA to S W F
The previous Ise-komi skewer (±ΔA) to (±ΔF) performed based on △GSWF to SWA and the total number of stitches 9
．． 'j i'E The ratio at which the performance is stopped based on the total Note 1 signal 5GSWT from the SWT (=1±V/10
0. The data program shown in Table 6 is set by
The SO1 address is reached through a routine 157 to create the data and a routine 15B to store the data.

Therefore, the step-down switch SW A-・SWF,
Total number of stitches 1 switch STW and Ti-1)! Just by operating leg 1~switch MSS, the second stitch 1
It is possible to sew a work cloth whose size is significantly different from that of a work cloth that has been ceramed with a ferrule with the same effect as in the fourth sewing.

In this way, set the p shift program for the base 11 (to be the work cloth K), and press the mode select switch M SS
If you select any one of the 1st to 5th stitching specials as appropriate, you can sew a 1111 workpiece fabric of the same size as the standard machining ray bK, and the sewing areas A to F will have different sagging effects. I love how easy it is to sew ray 0.

Note that the present invention is not limited to the above-mentioned embodiments, but can be applied to V:τ
You can increase or decrease the pattern made by rotating the wheel 12 and press 1 cola 1.
Only one of 3 and 3 can be activated 1 all l no 1
It is also possible to make appropriate changes without departing from the spirit of the invention.

As described in detail, according to the present invention, a sewing machine equipped with a pair of double feed teeth in the front and rear of sewing machine A double feed mechanism that gives a difference in the double feed amount of the double feed machine (t) is provided, and a control means is provided to control the differential amount of the double feed machine (t) to a preset value corresponding to the number of stitches. It is possible to improve the efficiency of 81 manufacturing work such as various types of -r Ise-stitching, and 5. It has a '2IJ end that can be easily used even by non-experts.

[Brief explanation of drawings]

Fig. 1 is a front view of a processed cloth for explaining this invention, Fig. 2 is a front view of Ka'U city which has been similarly sewn with uneven stitching, and Fig. 3 is a perspective view of a sewing machine embodying this invention. , FIG. 4 also shows the workpiece cloth feeding mechanism [Main part 731 B? Figure z and Figure 5 are electric block circuit diagrams for controlling the Mosin, Figures 6 to 10 are flow diagrams of the microcomputer, and Figure 11 is a diagram showing the installation of each sewing area of the work cloth. There is an explanatory diagram C showing changes in the suspension. Sewing machine 1, start switch 2, sewing needle 4, ti slot 1°) 1
616, sub-feed dog 7, servo pincer 10, anti-q/j temporary '11, rotating wheel 12, pressure roller 13, main feed base 21,
Sub-feed table 22, sewing machine main shaft 25, vertical feed interval cam 2
6. Eccentric cam 28 for forward and backward feeding, swing shaft 30, swing arm 31
, feed arm 33, adjustment@36, adjustment lever 37, adjustment link 38, sliding block 39, 42, sewing machine motor drive circuit 51, pulse motor drive circuit 52, cylinder drive circuit 53, servo Motor drive circuit 54, display drive circuit 55, needle position detection circuit 56, stitch number counter 57, work cloth 1<, stitch 1 hem area A~[, stitch area IJ
, filtration area P, servo [-switch SM, pulse motor PM, sewing machine motor MM, memory select (-switches MS1 to MS5, mode select switch MSS
, Microphone [Cocomputer MC, Note 1 switch SW to SWF, total number of stitches 4 I switch SWT
, data select switch DSS, data input switch INS, display device ffi DSP, ↑1 instruction) lamp L1, Ise included instruction lamp L2゜Patent applicant Brother E Awa Butsu Shiki Co., Ltd. Agent Patent attorney On 1) Bosen's 1 Table 2 Table 3 Table 4 Table 5 Table 6

Claims (1)

[Scope of Claims] A sewing machine in which a pair of cloth feed teeth is disposed in front and behind a sewing machine needle, a cloth feed mechanism is provided that provides a difference in the amount of cloth feed between the front and rear cloth feed teeth, and A sewing machine characterized in that a control means is provided for controlling the differential amount of a feed mechanism to a preset value corresponding to the number of stitches.