JP2734103B2 - Sewing machine work cloth loading device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work cloth loading device for a sewing machine.

[Prior Art] The present applicant previously arranged a work cloth loading means below a work cloth support side of a work cloth support surface of a work table on which a sewing machine body was mounted, finished sewing, and finished the work cloth support surface. The machine provided with a work cloth loading device for loading a work cloth hanging down from one side is disclosed in Japanese Patent Application No. 62-113096 (Japanese Patent Application Laid-Open No. 63-277086). is there.

[Problem to be Solved by the Invention] However, in such a known work cloth loading device, a work cloth having a large cloth thickness, for example, as shown in FIG. In the case of the semi-processed front work cloth K, since the work cloth is thick, even if the work cloth K is sent out from the work cloth support surface to the cloth sending side after finishing the sewing, one end portion Ka is originally. Hangs down from the work cloth support surface and is processed and stacked by the work cloth stacking means. However, since the work cloth K is fed out in a flat state without being bent, a situation occurs in which the work cloth K is not loaded by the work cloth stacking device. did.

In addition, the work cloth K of the front body is formed by sewing a pocket piece on a part which has been assembled and sewn on the front and front wings.

In view of the above, an object of the present invention is to provide a work cloth loading device for a sewing machine capable of sufficiently loading even a work cloth having a large cloth thickness.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a worktable on which a sewing machine main body is mounted, and a worktable which is arranged on one side of a work cloth sending-out side of the worktable, perform sewing. Work cloth loading means for loading the finished work cloth, and the work cloth on which sewing has been completed can be engaged on the work cloth supporting surface on the work cloth sending-out side of the work table adjacent to the work cloth loading means. A cloth feeding means including a cloth feeding roller capable of moving up and down between a lowering position and a rising position apart therefrom, and feeding the work cloth toward the work cloth loading means at the processing position; The work cloth can be moved up and down integrally with the cloth feed roller. When the work cloth is arranged at the lowered position, it engages with the upper surface of the work cloth and one end of the work cloth on the sending side hangs down toward the work cloth stacking means. Guide to And a guide plate for causing it to be provided.

[Operation] For this reason, even if the thickness of the work cloth that has been sewn is large, the work cloth is fed toward the work cloth stacking means when the cloth feed means is arranged at the lowered position, and is processed by the guide plate. One end of the cloth is guided in engagement with the upper surface of the work cloth so as to hang down toward the work cloth loading means.

[Embodiment] An embodiment in which the present invention is embodied in an automatic sewing machine for sewing pocket pieces on a body or the like called a pocket setter will be described below.

On a worktable 2 on which a work cloth support plate 1 constituting a work cloth support surface 1a is fixed upward, a sewing machine main body 3 is placed by a pulse motor (not shown) so as to be movable in the YY direction in FIG. Have been. On the left side of the work table 1, a pocket folding machine 4 for folding the green of the pocket piece and setting it on the front body is arranged. The work cloth K composed of the set front body and the pocket piece is: The workpiece is moved to a needle drop point position of the sewing machine main body 3 by a work cloth pressing plate 5 which is moved by a pulse motor (not shown) on the work cloth support surface 1a in an XX direction orthogonal to the YY direction by a pulse motor (not shown).

A U-shaped mounting frame 6 having an open upper side is fixed on the right front portion of the work cloth support plate 5, and one support shaft 7 is rotatably supported between the open ends. A pair of support arms 8, 9 are fixed to both ends. A roller shaft 11 to which a cloth feed roller 10 for feeding the work cloth K is fixed is rotatably supported between the free ends of the pair of support frames 8 and 9. A forward / reverse rotation air cylinder 12 is fixed on the support arm 9, and a piston rod 12 a thereof is operatively connected to the roller shaft 11 via a rack 13 and a pinion 14. The pair of support arms 8, 9 are connected to a lifting air cylinder (not shown) to move the cloth feed roller 10 between a processing position where the cloth feeding roller 10 can be engaged with the work cloth K and a lifting position separated therefrom. Move to

A mounting plate 15 is fixed to one side of the worktable 2 on the side of a sewing machine worker (a cloth feeding side by the cloth feeding roller 10), and four mounting legs 16, 17, 18, and 19 are fixed. 3 in
A single support shaft 20 is rotatably supported by the mounting legs 16, 17, 18, and a pair of U-shaped support arms 21, 21 are attached to the support shaft 20.
Is fixed at one end, and a holding plate 22 is attached between the other ends. A pressing plate 23 is disposed at a position facing the holding plate 22, and the pressing plate 23 is a piston rod 24 of a pair of pressing plate air cylinders 24, 24 mounted on the mounting plate 15.
a, 24a are installed. The holding plate 22, the pressing plate 23, and the like are arranged below the work cloth sending side of the work cloth support surface 1a of the work table 2, and after sewing is completed, the work cloth is moved from one side of the support surface. One end Ka of the hanging work cloth K
And hold it. Reference numeral 25 denotes an inclined guide plate having an upper end fixed to the mounting plate 15 and a holding plate 22, when the lower end is in an open position,
It is located between the pressing plates 23.

A support shaft 26 is rotatably supported at the free end of the mounting leg 19, and a support arm 27 is fixed at the tip of the support shaft 26.The other end Kb of the work cloth K is provided at an intermediate portion of the support arm 27. A reversing section 28 for reversing is fixed, and a piston rod 29a of a reversing air cylinder 29 mounted on the mounting plate 15 is connected to the tip of the reversing section 28.

Reference numeral 30 denotes a wide work cloth mounting table for mounting the work cloth K inverted by the reversing means in a flat state or a state close to the work cloth K. The work cloth K is formed by bending a plate material into a U-shape. Mounting base body 31 including a horizontal plate portion 31a for mounting, and a pair of upright plate portions 31b, 31b standing upright from both sides thereof;
It comprises a leg 32 of the book and a cloth retaining plate 33 fixed to the horizontal plate 31a of the mounting table main body 31. The cloth retaining plate 33 is composed of a lower plate 33a fixed to the horizontal plate portion 31a, and an upper plate attached to the lower plate 33a so that the vertical position can be adjusted by a plurality of screws and long holes as is apparent from the figure. 33b.

Further, the base end of the swing arm 34 is fixed to the support shaft 20,
Its free end is connected to a piston rod 35a of an evacuation air cylinder 35 mounted on the mounting plate 15.
The retraction air cylinder 35 always keeps the holding plate 22 at the position shown in FIGS. 1 and 7 to 10, and as shown in FIG. The other end K of K
After the is placed, the holding plate 22 is retracted in a direction away from the one end Ka side of the work cloth K in a state where the holding operation by the holding plate 22 and the pressing plate 23 is released.

A guide plate 36 having a shape shown in the figure is attached to the lower surface of the support arm 8 so as to be located near one side of the work cloth support surface 1a on the work cloth sending side. The guide plate 36 is mounted by mounting the right end of the guide plate 36 on the lower surface of the support arm 8 and by attaching a fitting piece fitted to the air ejection pipe 37 fitted and fixed to the boss 8 a of the support arm 8. Installed with 38. As shown in FIG. 5, the leading end of the guide plate 36 hangs down at the lowered position where the cloth feed roller 10 engages with the work cloth K to move one end Ka of the work cloth K on the cloth feed side. It is formed in a curved shape so as to guide between the holding plate 22 and the pressing plate 23 at the release position. At the same time, at the left end of the guide plate 36, even when the work cloth K is guided to the sewing position from the folding machine 4 side even in a flat state, the one end Ka is connected to the guide plate 36 by the work. An inclined guide portion 36a and an inclined guide surface 36b are formed so as to be guided between the cloth support surface 1a and the one end Ka in a bent state.

On the lower surface of the air injection pipe 27, there are seven air injection holes.
37a are formed, and an opening 36c is formed at the position of the guide plate 36 corresponding to them. This helps the work cloth K bend.

Next, the operation will be described. When the pocket is folded by the pocket folding machine 4, the cloth feed roller 10 and the guide plate 36 are operated by the action of the air cylinder for lifting.
1, the holding plate 22 is also at the advanced position shown in FIG. 1, the pressing plate 23 is retracted, and the reversing rod 28 is also at the retracted position below the work cloth support plate 1.

When the folding is completed from this state, the work cloth pressing plate 5 moves to the left in FIG. 2 and goes to pick up the folded work cloth K. When the work cloth K is carried to the sewing position, sewing is performed. Be started. At this time, even if the work cloth K is thick and flat, the one end Ka of the work cloth K is forcibly bent by the inclined guide surface 36b of the guide plate 36. It is reliably guided below the guide plate 36.

At the time of sewing, movement of the sewing machine body 3 in the Y-Y direction;
When the pressing plate 5 is simultaneously moved in the X-X direction and the sewing is completed, the lifting air cylinder is operated to rotate the pair of support arms 8 and 9 counterclockwise in FIG. Roller 1
0 is dropped onto the sewn work cloth K and guide plate 3
6 is also lowered to the position shown in FIG. 5, and even if the work cloth K is thick, one end Ka of the work cloth K is forcibly bent. At the same time, the piston rod 12a of the air cylinder 12 for forward / reverse rotation protrudes, and the cloth feed roller 10 is rotated in the direction of feeding the work cloth K via the rack 13 and the pinion 14. At this time, air is also jetted from the air jet pipe 37, and the one end Ka of the work cloth K tends to hang down from the work cloth support surface 1a.

In such a state, the work cloth K is sent out, and when one end Ka thereof reaches between the holding plate 22 and the pressing plate 23 as shown in FIG. 8, the air cylinder 24 for the pressing plate is operated. Then, the piston rod 24a is projected, and the pressing plate 23 presses and holds the one end Ka as shown in FIG. Thereafter, the piston rod 29a of the reversing air cylinder 29 is operated to protrude, and the reversing rod 28 is largely rotated from the position shown in FIGS. 1 and 9 to the position shown in FIG. As a result, the other end Kb of the work cloth K is turned over, and as shown in FIG.
Is placed on the horizontal plate portion 31a of the mounting table main body 31 of the work cloth mounting table 30 in a state of straddling.

Thereafter, as shown in FIG. 11, at the same time when the reversing rod 28 is returned, first, the air cylinder 24 for the pressing plate is operated to retract the piston rod 24a, and the pressing plate 23 is detached from the holding plate 22. Then, the holding operation of the one end Ka of the work cloth K is released. Subsequently, the evacuation air cylinder 35 is operated, and the holding plate 22 is rotated together with the support arms 21 and 21 together with the support shaft 21, and is withdrawn from one end Ka of the work cloth K. It is mounted on the mounting table main body 31. When the holding plate 22 is retracted, the cloth hooking plate 33 is in contact with the one end Ka of the work cloth K due to friction.
11 acts as a resistance to the work cloth K when it is pulled to the right in FIG. 11, and prevents the work cloth K from slipping off the work cloth mounting table 30. However, the cloth retaining plate 33 basically operates even if it is not installed, and is sufficiently effective.

In the above embodiment, one end Ka of the work cloth K is
The guide plate 36 is used to guide the work cloth loading means including the holding plate 22, the pressing plate 23, etc., but when the work cloth K is fed out, the work cloth is actuated by a member operated by an actuator. Various forms can be considered, such as pressing K, all of which are effective.

[Effects of the Invention] As described in detail above, the present invention sends out a sewn work cloth toward the work cloth stacking means by the cloth feed means when the cloth feed means is disposed at the lowered position. Since one end of the work cloth is guided along the guide plate engaging with the upper surface of the work cloth so as to hang down toward the work cloth loading means, even if the work cloth is thick, the work cloth can be reliably placed on the work cloth loading means. Be loaded.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of the present invention, FIG. 2 is a perspective view of an automatic sewing machine to which a work cloth loading device of the present invention is added, and FIG.
FIG. 4 is a front view showing a guide plate portion, FIG.
The figure is a left side view of the same, FIG. 6 is a view showing an example of the work cloth K, and FIGS. 7 to 11 are operation explanatory views. In the drawing, 1a is a work cloth support surface, 2 is a work table, 3 is a sewing machine main body, K is a work cloth, 22 is a holding plate, 23 is a pressing plate, 28 is a reversing bar, 30 is a work cloth loading table, and 36 is a guide. It is a board.

Claims (1)

(57) [Claims] A work table on which a sewing machine main body is mounted; a work cloth loading means disposed on one side of the work table on a work cloth sending-out side for loading a work cloth which has been sewn; On the work cloth support surface on the work cloth sending-out side of the work table adjacent to the cloth stacking means, it is possible to move up and down between a lowering position capable of engaging with the work cloth which has been sewn and an ascending position separated therefrom. And a cloth feed means including a cloth feed roller for feeding the work cloth toward the work cloth stacking means at the processing position, and the cloth feed roller of the cloth feed means can be moved up and down integrally with the cloth feed means, and is arranged at the lowered position. And a guide plate that engages with the upper surface of the work cloth and guides one end of the work cloth on the sending-out side so as to hang down toward the work cloth stacking means. Cloth loading Place.