JPH03141983A - Automatic sewing machine - Google Patents

Abstract

PURPOSE:To make a freely differing sewing locus continuously sewing-workable by controlling the first and second driving means in such a manner that the first sewing is performed for a work cloth held to a retaining plate in one work cloth holding device thereafter the second sewing is performed again for the work cloth held by a retaining plate of the other work cloth holding device. CONSTITUTION:A work cloth, fixedly held to a preliminary position H by a temporary holding means I provided in a table, is moved to a sewing position F of a sewing machine by a retaining plate 9 or 9' of one work cloth holding device B or B', and the first sewing along a needle groove 8 or 8', formed in this retaining plate 9 or 9', is performed, thereafter the cloth is returned again to the preliminary position H and held by the temporary holding means I. The cloth is again held by the retaining plate 9 or 9' of the other work cloth holding device B or B' and moved to the sewing position F with the second sewing performed along the needle groove 8' or 8 formed in the retaining plate 9' or 9. In the sewing position F, by the second driving means C and D, D', relative movement along a sewing locus between a sewing machine A and the cloth is performed, and different sewing locus is sewed automatically and continuously.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to pocket fabric! This invention relates to an automatic sewing machine that performs sewing, etc.

[Jubei's technology J This type of automatic sewing machine is available in Japanese Patent Application Laid-Open No. 63-2! '1509
Japanese Patent No. 4 proposes a work cloth holding device that is provided with two work cloth holding devices for conveying and holding work cloth between a pocket folding pattern and a sewing machine. Each processing cloth holding device! The shapes of the needle grooves of the presser plates that are attached are the same. Even though the expensive pocket folding process is done with just one machine, the Hv process is avoided by the alternate operation of holding and placing the work cloth on two machines, and the cycle time is shortened.

In addition, rather than shortening the cycle time, the U.S. Patent I
In JSP3t930, 454, the member that presses the inside of the pocket fabric is divided into three movable plates, and the movable plates are moved using an air cylinder! A system has been proposed that allows l1lJ. When sewing the outside mW locus, a movable plate is brought close to the second foot of the fixed plate that presses the outside of the pocket fabric to form a thin slit corresponding to the outside sewing locus, and the inside aMJ is
When sewing IIllILwf, the movable plate is moved back to form a wide slit, and the movable plate attempts to press the inner side of the Il[trajectory].

[Problem to be solved by the invention J However, the former automatic sewing machine cannot handle different sewing trajectories such as double row stitching. AI different sewing paths on the inside! When doing so, the movable plate moves while pressing against the pocket fabric.

For this reason, there is a problem in that, particularly in the case of thin fabrics such as shirts, the pocket fabric may be pulled and moved as the movable plate moves, causing the pocket fabric to shift.

Also, when the movable plate is moved back and the inner sewing track is sewn, the gap between the movable plate and the fixed plate is widened, and the fixed plate can only be pressed at a place away from the inner sewing track. When sewing thick fabrics such as shirts, insects are a problem, but when sewing thin fabrics such as shirts, the processed fabric jumps as the sewing machine needle is inserted, and the bevel of the sewing machine hook fails to catch the thread. There was a problem that skipped stitches and thread breakage occurred frequently.

Furthermore, if a part is movable like 1Itll' above, #lIr& becomes complicated, which is disadvantageous in terms of cost and maintenance, and there is also a limit to the change in the awI trajectory. There was a problem.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide an automatic sewing glF1 capable of continuously agl-processing freely different sewing trajectories.
1.

[Means for Solving the Problems 1] In order to achieve the above-mentioned objective, the present invention provides the first embodiment drawings.
As illustrated in the figure, there is a sewing machine A and a sewing position [F and a preparation position lI! A table 4 consisting of a continuous plane H, a temporary holding means (2) provided on the table 4 for temporarily fixing and holding the work cloth at the preparation position H, and needle grooves 8, 8 along different sewing trajectories. A plurality of holding plates 9, 9' each having a `
A plurality of work cloth holding devices B that are movable by leapfrogging with IF.

B' and hold those processed cloths! ! 112B and B' are moved at both positions F and H, and a drive means 112 is provided along the sewing trajectory between D' and the presser plate 9 or 9' installed at the sewing position [F] and the sewing machine A. The second drive hand PIIC and D' generate relative movement, and the workpiece cloth held by the presser plate 9 or 9' of one workpiece cloth holding device B or B' ffI! After the fabrication is completed, the work cloth is moved to the preparation position H, temporarily held on the table 4 by the temporary holding means I, and then held again by the presser plate 9' or 9 of the other work cloth holding device FB' or B. is held and the work cloth is moved to the ag1 position, and the second i! The above-mentioned step 1. An automatic AM machine is provided, characterized in that it is equipped with control means J (see FIG. 6) for controlling v&2 drive means C and D''.

"Function J" In the automatic AM machine configured as described above, the workpiece cloth that is fixedly held at the preparation position H by the temporary holding means I provided on the table is attached to one workpiece cloth holding device MI3W which is attached to the presser plate B'. 9 or 91 to the sewing position WF of the sewing machine, perform the first sewing along the needle m8 or 8' formed on the presser plate 9 or 9', and then return to the semi-horizontal position fi T-T. It is returned and held by the time holding means r.Then, the holding plate 9 or 9' of the other work cloth holding wing flll or D' is
Retained again by the ag1st place lI! Move fS to F,! 1. A second!!v is carried out along the needle groove 8' or 8 formed in the presser plate 9'' or 9. Each presser plate 9 or 9' alternately holds the work cloth and moves it to the first drive means. ,D' moves between the preparation position [8 and the sewing position I!F, and in the a tear position WIF, the second drive!l1lJ means C and D' moves relative to the sewing machine A along the sewing trajectory. By doing this, different a91 trajectories are automatically and continuously sewn.

``Example 1'' An example 1/a of the present invention in which 11 (pHR7JR Iso) was embodied in a pocket seven ivy will be explained with reference to the drawings.

Figure 1 is a flat drawing of the Pocket Nanatsuta, Figure 2 is a perspective view showing the configuration of the movement lfi mechanism C of sewing machine A and the movement mechanism of workpiece cloth holding device B, and Figure 3 is a diagram of sewing machine A and workpiece cloth. FIG. 2 is a perspective view showing the structure and arrangement relationship of a holding device B and a pocket folding fiE.

Note that in FIGS. 2 and 3, the work cloth holding device B' shown on the front side in FIG. 1 is omitted.

As shown in Figure 1, Pocket Nanatsuta consists of a sewing machine A that performs the sewing process, and two workpiece cloth holding devices 1 that are arranged parallel to the X-axis direction on the front side and the opposite side of the sewing machine A.
B, B', and a pocket folding machine E for folding pocket material P (see Figure 15).

In the following explanation, hold the processed cloth! If! B and B' have the same structure, and their moving mechanism and D' have the same mechanism, so the explanation of their structure and operation will be based on one work cloth holding blade (
1B and the moving mechanism, and regarding the other work cloth holding device B' and the moving m-groove D', the corresponding members are designated with "'" in FIG. 1, and the explanation thereof will be omitted. .

This Pocket Nanatsuta has seven frames 50 to which the above-mentioned devices are attached, and the frame 50 has a sewing machine table 4.
is placed. The sewing machine table 4 serves as a common workbench for the pocket folding machine E and the sewing machine A, and also functions as the throat plate of the sewing machine A. On the sewing machine table 4, a working position where the pocket element P is folded by the pocket folding machine E prior to sewing, and then the fabric to be processed is prepared such as being placed 1a on the fabric W such as the front body of a dress shirt. 111G and sewing machine A↓j! aEli that does the manufacturing and processing! Rank r! 11F'
and its working position G and a! ! A preparation position (1) exists between the positions. Preparation position r! In iH, there are many F suction holes 30 on the sewing machine table 4'! r! The cloth W can be temporarily fixed and held by air suction by a vacuum suction device (not shown). Suction hole 30
And vacuum suction not shown! This structure constitutes the temporary holding means I of the present invention.

As shown in FIG. 2, the sewing machine A has an arm part 2 that supports the needle 5 in a vertically movable manner and a bed part 3 that supports the arm W62. It is disposed movably in the Y-axis direction on a base 51 disposed on seven frames 50. The needle 5 is a link mechanism 82
It is driven vertically by a sewing machine motor 80 via an upper shaft 81. Further, inside the bed portion 3, there is a hook 1pJJ52 which rotates in synchronization with the upper shaft 81 by an upper shaft 81 and a timing belt 83 and supports a vertical hook 53 facing the X-axis direction.
arranged parallel to the axis.

As shown in Figure 2, the 1fl movement mechanism C of the sewing machine A mainly consists of track rails 54 and 55 fixed flatly on a base 51 in the direction of force, and a timing belt 56.
and a Y-axis motor 5 that drives the timing belt 56.
It consists of 7. A track rail 5 is provided on the bottom of the bed section 3.
U-shaped bearing bearing 58.59 engaged with 4,55
The timing belt 56 is arranged at a distance of 'iA in the Y-axis direction by timing pulleys 60 and 61. The timing pulley 61 is rotatably attached to the base 51 by a pulley support member 62, and the pulley 60 is rotatably attached to the base 51 by a pulley support member 62.
It is operatively connected to the rotating shaft of a Y transport motor 57 fixedly attached to the Y transport motor 57 . *The timing belt 56 is in one place,
It is connected to the bottom surface of the bed portion 3 by a threaded rim.

In the above #lI, when the Y Tsumugi motor 57 rotates,
The timing belt 56 is driven via the boot 1, 160.
Then, the bed section 3 is moved in the Y-axis direction by the timing belt 56 into the dormitory on the C top 7 rails 54 and 55. In this way, the sewing machine A and hence the needle 5 can be moved in the YIi11 direction at the aw position 111fF on the sewing machine table 4.

At the sewing position [F] J3, the pocket material P clamped by the work cloth holding device B and the cloth W are sewn. The additional cloth holding device i2B is shown in FIG.
As shown in FIGS. 2 and 3, it mainly consists of a clamping sill 71, a feed arm 7, and a presser plate 9 having a needle barrel 8. The feed arm 7 is rotatably supported by a wheel bearing 72 connected to the top n70 m of the sliding member 70, and the rear wheel portion 73 of the feed arm 7 is supported by a clamp fixed to the back surface of the sliding member 70. A presser plate 9 is removably attached to the front end 74 of the feed arm 7.

The needle groove 8 formed in the presser foot iR9 is formed along the first sewing locus on the outside of the blur 71 material P, as shown in FIG. 4(a), and as shown in FIG. 4(b). As shown in FIG.
It is formed along the inner second (first) locus.

Due to the above mt, as the clamping sill 71 is driven in the X-wheel direction, the feeder 17 swings around the bearing 72 as a fulcrum. Therefore, the clamping force 1 is +
When driven in the Z direction, the feed arm 7 swings downward, presses the presser plate 9 (upper material W and pocket material P against the sewing machine table 4 and clamps it!7, and vice versa, the clamping sill 71 - When driven in the Z direction, the feed arm 7 swings upward, and the press plate 9 releases the clamp between the fabric W and the pocket material P.

Work cloth holding device with the above configuration! As shown in FIGS. 1 and 2, B is the movement If! of workpiece cloth holding*mB. Move to the direction of the X wheel due to the i-position! h is done. The moving mechanism mainly includes a sliding member 70, rails 63a and 63b, a timing belt 64, and an X-axis motor 67.

The W4 drive material Ma01 supports the soil feeder 117, and the base 5
Rail support on top of 1? It is slidably supported by members 69m and 69b on rails 63a1631) installed in the X-wheel direction. Further, the timing belt G4 is stretched in the X-axis direction on the base 51 by a timing pulley 65t66, and the timing belt G4 is stretched on the base 51 by a timing pulley 65t66.
i! The timing pulley 66 is operatively connected to the rotating shaft of the X-axis lever 67 provided on the base 51 by means of a bobbin support member 68, and is rotatably arranged on the base 51. In addition, the timing bell) (?, 4 -ct location is connected to the back surface 70b of the sliding member 70 by T1 thread &:j).

In the above configuration, the timing belt 64 is driven by the XM motor 67/) 1171 through the pulley 65, and the ashy material 70 is guided by the timing belt 64 to the rails 63m and 63b, and 8a in the wheel direction. Therefore, the presser plate 9 coupled to the sliding member 70 via the feed arm 7 can move in the X-wheel direction.

As shown in tPJim, the presser plate 9 is attached to the sewing machine.
Bu Pa, A I-, I Yu Seven L1 1 ← t Fya Kasuri C Shika Dairy U 5 layers F Easy tt Preparation position and sewing position 11 [
A moving mechanism is mounted on the base 51 so that the lever with F can be moved.
It is located in

Therefore, it is possible to clamp the pocket material 1 with the fabric W to the sewing machine table 4 and convey it to the sewing position F at the lower position iQ using this moving mechanism. It is also possible to control the X#i force direction of the sewing path.

The presser plate 9 and the presser plate 9' of the other work cloth holding device B' are located above the preparation position H and have a height of H from the sewing machine table 4.
, in the standby position at Hffi (see Figure 9 (&)).
, H, , H, are made different so that the presser plates 9 and 9' do not interfere with each other.

The material W on the presser plate 9 and the presser plate 9' is received and transferred to the gutter shown in FIGS. 9(a) to 9(k).

Molding of pocket material P at work M position G (described later)
When this is completed, the presser plate 9 moves to the working position [G, then descends, presses the fabric W and clamps it #19 (b)),
While in the clamped state, move on the table 4 to the sewing position F and perform the Ml sewing process (QIAI-11) When the first sewing process is completed, the presser plate 9 presses and holds the fabric W until it reaches the ready position L!H. Return (Fig. 9(d)), and there, the fabric W is placed on the table 4 by the F suction of the -BJ holding means ■.
After temporarily holding it in the upper position, the clamp is released and it rises to the standby position at a height H (Fig. 9 (e)), and moves to the working position G (Fig. 9 m).

Next, the presser plate 9' is lowered from the standby position at the height I (,
The fabric W is pressed twice (FIG. 9(g)), and moved on the table 4 to position AV position fiF in the clamped state to perform the second sewing process (FIG. 9(h)).

At this time, the presser foot @9 returns to the standby position while being raised.

When the second sewing process is completed, the presser plate 9' moves to the working position raG in the clamped state (Fig. 9 (1)) and rises to the height H7 position, leaving the work cloth W at the working position fiG. 9 (j)) and return to the standby position (Fig. 9 (k)).

As shown in FIG.
4, the presser plate 19, the bent piece support plate 24, the bent piece 27, and the air cylinders 11, 21, 28, and 25 that drive them.

On the sewing machine table 4, a support member 10 is movably supported by an unillustrated F-sill ring about a horizontal axis 94 (see FIG. 1), and a piston 12 of an F-sill ring 11 mounted on the lower surface of the support member C is supported. Gauge plate support 13 located in front of 10 is shown as [1]. A gauge plate 14 for determining the outer shape of the pocket material P is removably attached to the gauge plate support 13, and the pocket material P is placed on the upper surface thereof. A support shaft 16 extending in the horizontal direction is installed on a shaft support 15 protruding from both ends of the R16 of the support member 10, and a presser plate support 17 is rotatably mounted on the support shaft 16. A press plate 19 is detachably attached to a pair of attachments 11618 protruding from the press plate support 17. A piston 22 of an air cylinder 21 rotatably connected to the upper surface of the support member 10 is connected to a connecting piece 20 protruding from the center of the upper part of the presser plate support 17 . Then, as the piston 22 moves in and out, the presser plate 19
The presser plate 19 is rotated between an active position where the retaining plate 19 overlaps the detent plate 14 and an inactive position where the retaining plate 19 is upwardly separated from the detent plate 14.

A pair of support blocks 23 are rotatably supported at both ends of the support shaft 16, and a bent piece support @24 having a substantially L1 shape is removably attached to the front ends thereof. On the bending piece support plate 24, there are four 5. ? The cylinders 25 are g# and 9PI, and bent pieces 27 are attached to their pistons 26, respectively. and an operating position where the bending piece 27 protrudes below the dage plate 14 as the piston 26 moves in and out;
It is moved outward from the gauge plate 14 to a retracted position a distance fi.

On the other hand, each support block 23 -,! An air cylinder 28 is disposed between the -, tri and both 11 parts of the support member 10, and its base end is rotatably connected to the support member 10, and its piston 29 is connected to the support block 23. connected to the top end.

The operation of the pocket folding fiE having the above structure will be explained with reference to FIGS. 5(a) to 5(h).

The pocket fold fiE is controlled by the control 1IlI! described later. 1)
When the fold start switch 92 is pressed, the respective shillings 28, 11, 21, and 25 are sequentially driven to 1'! ! The pocket material P is dynamically bent.

That is, along with the support member 10, the dage plate 14 and the presser plate 19
Then, the bent piece support plate 24 is raised, and the daisy plate 14 is placed in a standby position separated from the support plate mounting surface 4a of the sewing machine table 4 by a predetermined distance as shown in FIG. Then, the air cylinders 21 and 28 are operated to raise the bent piece support plate 24 and the presser plate 19. In this state, the fabric W is placed on the support plate placement surface 4a below the gauge plate 14, and the pocket material P is placed on the gauge plate 14.

Next, operate the air cylinder 21.2B and press the presser plate 1.
9 and the bending piece support [24] are lowered and the presser plate 19 is superimposed on the gauge plate 14 as shown in FIG. and fold it downward. Then, each air cylinder 25 shown in FIG. 3 is operated, and each bent piece 27 is moved downwardly on the dage plate 14 as shown in FIG. 5(e).
Each of the bending pieces 27 bends the peripheral edge of the pocket material P so as to overlap the lower surface of the gauge plate 14.

Next, as shown in FIG. 5(d), the sewing machine table 4
Each plate 14, 19, and 24 is operated together with the support member 10 so that the distance between the support temporary mounting surface 4a and the dark plate 14 becomes a predetermined amount wld smaller than the distance.
), each folding piece 27 is returned to its original position, and each folding piece 27 is separated from the pocket material P, and then the air cylinders 21 and 28 are operated, as shown in FIG. 5(f). ,
The bent piece support [24] and the presser plate 19 are raised to separate them from the pocket cable material P. At this time, the pocket material P is set on the fabric W together with the gauge plate 14.

FIG. 6 shows the work cloth holding devices B and B' of the sewing machine A1 described above.
Y-axis motor 57 of moving machine W4C of sewing machine A, work cloth holding device B, moving mechanism of B', X-wheel motor 76 of D'
7.67' is a block diagram showing a schematic configuration of a control device J that controls a clamping sill 71 and the like.

The central processing unit (hereinafter referred to as CPU) 85 includes motor drivers 86 and 86' that respectively drive the X-wheel motors 67 and 67', a motor driver 87 that drives the Y transport motor 57, and a clamp for the pocket folding machine E. A driver 88 that drives the air cylinder 71.28.11°21.25 for use, and an l/fiber 89 that drives the electromagnetic pulp 84 for air suction of the vacuum suction device I (not shown), which is the temporary holding means I. are connected. Also, CPU8
5 includes a ROM 90 in which the processing control program is stored, and an RA in which the 111th manufacturing data and the second sewing data are stored.
M91 is connected, and a folding start switch 92 and a sewing start switch 93 for starting the pocket folding machine E are also connected.

FIG. 7 is a 70-chart showing the processing procedure of the CPU 85.

First, pocket fold 8! When the folding start switch 92 which starts the folding machine E is pressed, a pocket folding machine operation routine is executed in step 100. In this routine, pocket fold 1flE is driven and blur? ) The pocket bending process shown in FIGS. 5(&) to (f) is performed on the material P. In step 102, if it is determined that the sewing start switch 93 is turned on, the conveyance and sewing processing of the pocket material P and fabric W in step 104 and subsequent steps are performed.

That is, in step 104, the work cloth is held 11! The holding plate 9 (see FIG. 4(a)) attached to fB is moved from the standby position (a above the preparation position H) to the work position G by the drive of the X transport motor 67 by a predetermined amount. The presser plate 9 is moved from the standby position to the work position G in an unclamped state, the clamp air cylinder 71 is driven in the +2 wheel direction, and the feed plate 9 presses the pocket material P onto the fabric W together with the gauge plate 14. It becomes a clamp state (see Figure 9(b))
[).

Next, the air cylinder 11 is driven, and the gauge plate 14 is moved rearward as shown in FIG.
Next, in step 106, the X-wheel motor 67 is driven by a predetermined amount while maintaining the clamped state, and the presser plate 9 is moved to the ii* position. As a result, the folded pocket material P and fabric W are transported on the sewing machine table 4 to the sewing position 11F (see Fig. 9(c)).
.

In the following step 108, a second sewing pattern is executed.

In other words, the clamped state on the presser plate 9 is maintained *X
The shaft motor 67 and the Y transport motor 57 are rotationally controlled in synchronization with the vertical phase of the needle 5 in accordance with the m1ll data, and sewing is performed along the programmed first sewing trajectory, so that the outer seam of the pocket material P is sewn. is formed.

Next, in step 110, after the im* processing is completed, the presser plate 9 is moved to the clamped state and returned to the preparation position H (see FIG. 9(d)), and then step 112
, and in its preparation position H, turn on the vacuum suction device (1!I
The air suction electromagnetic pulp 84 (not shown) is driven to suction air from the air suction hole 30, and the cloth W on which the pocket material P is sewn is fixedly held. and step 1
At step 14, the presser plate 9 is unclamped and raised (see FIG. 9(e)), and the presser plate 9 is brought to the working position l! G (see FIG. 9 U>), and in the subsequent step 116, the work cloth maintenance W B 'tnW E board 9' (M
Figure (b) 11Jffl) From the full standby position to the ready position 1
[Go down to H and press and clamp the fabric W that is held fixed at -.

Then, the driving of the air suction electromagnetic valve 84 is stopped (see FIG. 9(g)).

In step 118, the X-axis motor 67' is driven to hold the work cloth 1f! 1B' and move the presser plate 9' to the sewing position [F] with the presser plate 9' in the clamped state.

In the following step 120, a second sewing routine is executed.

That is, while the clamped state by the presser plate 9' is maintained, the X-wheel motor 67' and the Y-axis motor 57 are controlled to rotate in synchronization with the vertical phase of the needle 5 according to the #2 sewing data, and the programmed second The sewing process is performed along the sewing trajectory, and the inner seam for the pocket cable material P is shaped rR (see FIG. 9(h)).

Then, in step 122, the presser plate 9' is moved to the working position G (see FIG. 9(i)), the presser plate 9' is raised and retracted, and the pocket material P is sewn with two-ply stitching on the outside and inside. Release the applied fabric W (see Figure 9 (j)) and move the presser plate 9' to the standby position (see Figure 9 (k)).
.

As a result of the above, from No. IIt to No. 2I! After completing a series of sewing processes, the process returns from step 120 to step 100 and waits for the next press of the folding start switch 91.

FIG. 8 shows a state in which the pocket fabric P is sewn to the fabric W using the pocket stitching method of this embodiment with double stitching on the outside and the inside.

The needle grooves 8° 8' formed in the presser plates 9 and 9' of this embodiment need only be formed to have a narrow width necessary for movement of the sewing machine needle 5, so that the vicinity where the sewing machine needle 5 is inserted can be sufficiently pressed. Even if the fabric to be processed is thin, skipped stitches or thread breaks will not occur.

Although the above embodiments have been described using a pocket sew as an example, the present invention is not limited thereto, but is obviously applicable to automatic sewing machines that continuously sew different sewing trajectories.

Effects of the Invention 1 The present invention is provided with a plurality of work cloth holding devices each having the above structure and each presser plate having a different needle groove formed therein. This has the excellent effect of being able to continuously sew different sewing trajectories along the needle groove.

In addition, since each presser plate is simply formed with a single needle groove, it is possible to reliably suppress and hold the left and right vicinity of the drop-off position of the workpiece fabric, allowing different sewing trajectories to be sewn. However, skipped stitches and thread breakage do not occur,
Additionally, since there are no moving parts, manufacturing costs are low and durability is high.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention; Fig. 1 is a plan view of the invention applied to a pocket safeter, and Fig. 2 is a plan view of the invention applied to a pocket safeter.
Shi 17 ＾ 〒★R hook laziness ha slanted m showing the composition of the structure
Figure 3 is a perspective view showing the structure and arrangement relationship of the sewing machine, one of the work cloth holding devices and the pocket folding machine, Figure 4 is a plan view illustrating the needle groove formed in the presser plate, and Figure 5 operates the pocket folding machine and holds the processed cloth! An explanatory diagram showing the operation of If11, Fig. 96 is a schematic block diagram of the control device, Fig. 7 is a 70-chart showing the processing procedure of the CPU of the control device, and Fig. 8 shows how to sew pocket material with double row stitching. FIG. 9, which is a front view of the worn fabric, is an explanatory view showing the operation of the presser plate of the work fabric holding device. A...Sewing machine, B, B'...Work cloth holding device, C.
... ATM disease (second drive means), D, D'... Movement mechanism (first drive means, second drive means), E... Pocket folding machine, F... Sewing position, G. ...Working position, H...
・Preparation position, ■...-time holding means, J...control device (control means), 4...sewing machine table (table),
8.8'...needle groove, 9°9'...pressing plate, 14...
・Dage plate, 19... Holding plate, 24... Bent piece support plate, 24.27... Bent piece, 11... Air sill for clamp, 21, 28, 71... w 9F -I+
"7 J' CJ E C-L '&-17.956.64...Timing belt, 57...X-axis motor, 63m, 63b...Rail, 67...Y-axis motor, 70 ...Sliding member, 60, 61, 65.66.
...Pulley. (b) 4 Figure ( ) 4 (d) Figure (e) -1 Figure Figure

Claims (1)

[Scope of Claims] A sewing machine, a table having a continuous plane between a sewing position by the sewing machine and a preparation position remote from the sewing machine, and a temporary table provided on the table for temporarily fixing and holding a work cloth at the preparation position. a holding means, a plurality of presser plates each having a needle groove formed along different sewing trajectories, and a plurality of workpiece cloth holding devices that respectively support the presser plates and are movable between a preparation position and a sewing position. a first driving means for moving the work cloth holding device between the two positions; and a second driving means for generating relative movement along the sewing trajectory between the presser plate disposed at the sewing position and the sewing machine. After the first sewing is performed on the work cloth held on the presser plate of one work cloth holding device, the work cloth is moved to the preparation position and temporarily held on the table by the temporary holding means,
a control means that controls the first and second driving means so that the work cloth is held again by a presser plate of another work cloth holding device and the work cloth is moved to a sewing position to perform second sewing; An automatic sewing machine characterized by being equipped with.