JP2549462Y2 - Work cloth folding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] In the present invention, a cloth piece formed by bending a periphery protruding from the outer periphery of a support plate toward the back side of the support plate along the outer shape of the support plate is fed. The present invention relates to a work cloth folding apparatus that presses a support plate against a table with a plate, pulls out the support plate from under the cloth piece, and then moves the cloth piece and the base cloth to a sewing position defined on the table to sew the work cloth. .

[Prior art] Conventionally, as this kind of bending apparatus, there is Japanese Utility Model Laid-Open No.
Is described in Japanese Patent Application Publication No.

In this apparatus, after a pocket piece as a work cloth is placed on a support plate provided on a table, a bending press plate is overlapped on the support plate from above the pocket piece, and the peripheral edge of the pocket piece is placed on the support plate. Bending the pocket piece to the back side of the support plate by bending downward along the outer circumference and moving the plurality of bent pieces provided on the bent piece support from outside to inside of the support plate Has become. The pocket piece is held between the table and the support plate.

[Problem to be Solved by the Invention] However, after the pocket piece is folded three or more times, the periphery of the pocket piece including that part is further folded, or the bent part bent at the periphery of the pocket piece cloth Is further bent, a bent overlapping portion is formed in the bent portion of the pocket piece, where the thickness is partially increased. In particular, when a thick material or jeans is used as a material, in the above-described apparatus, the bent overlap portion on the back surface of the support plate contacts the table,
Other bent parts float from the table. In this state, if the bent piece or the support plate is separated from the pocket piece, the bent piece will hook the bent part floating from the table and pull it out of the pocket piece, or the support plate will There was the inconvenience of getting caught inside the pocket piece.

Then, this invention aims at solving the said subject, and it aims at providing the work cloth bending apparatus which prevented bending failure.

[Means for Solving the Problems] In order to solve the above problems, according to the present invention, a table on which a base cloth to be sewn with a piece of cloth is placed, and the table is horizontally movable in a plane separated from the table by a predetermined distance upward. A support plate that is provided and determines an outer shape of the cloth piece after being bent; and a peripheral edge of the cloth piece placed on the support plate, the back surface of the support plate being arranged along the outer shape of the support plate. Peripheral bending means for bending to the side, the cloth piece whose peripheral edge has been bent by the peripheral bending means is pressed against the table together with the support plate, and the support plate is horizontally moved from under the cloth piece. And a feed plate for moving the cloth piece and the base cloth to a sewing position defined on the table after extracting the support plate. Partial when the piece is bent When the cloth piece and the support plate are pressed against the table by the feed plate in accordance with the position where the bending overlap portion having an increased thickness is formed, the bending overlap portion is released downward from the table surface. A recess having a depth capable of being provided was provided on the table.

[Operation] In the work cloth folding apparatus configured as described above, the periphery of the piece of cloth placed on the support plate is bent toward the back surface of the support plate along the outer shape of the support plate, thereby forming a bent portion. Is done. At this time, a bent overlap portion in which the thickness of the bent portion is partially increased is also formed. Thereafter, the feed plate presses the support plate and the bent portion against the table. On the other hand, the concave portion provided on the upper surface of the table allows the thickness of the overlapping portion to escape downward from the surface of the table.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 to 4 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a work cloth folding apparatus and a sewing machine according to the first embodiment, and FIG. FIG. 3 is an explanatory view showing the relationship between the support plates from a plane and a cross section, FIG. 3 is an explanatory view showing a bent overlap portion of the pocket piece, and FIG. 4 is an explanatory view showing a bent state of the outer periphery of the pocket piece.

As shown in FIG. 1, a sewing machine 11 provided on a table 14 is provided.
The arm unit 12 includes an arm unit 12 and a bed unit 13, and a needle bar 16 having a needle 16a at a lower end is supported on the arm unit 12 so as to be vertically movable. A thread catcher (not shown) constituting a stitch forming device together with the needle 16a is arranged in the bed portion 13.

A feed arm 17 is provided on the table 14 so as to be movable in the X and Y directions in FIG. 1, and a feed plate 19 having a needle guide groove 18 is detachably mounted at a front portion thereof. The cloth W such as the front body and the pocket piece P as a work cloth sewn to the cloth W are pressed against the table 14 by the feed plate 19.

A support member 20 is rotatably supported by a support shaft 20a on an auxiliary table 15 protruding from the table 14, and the support member 20 rotates based on the operation of an air cylinder 21 mounted on the auxiliary table 15. Is done. A support plate support 23 is provided on the piston 22a of the air cylinder 22 mounted on the lower surface of the support member 20.
Is installed. A pocket piece P is placed on the support plate support 23, and a support plate 24 for determining the outer shape of the pocket piece P is detachably mounted at a base end thereof.

A pair of pivots 25 projecting from the support member 20 have a pivot
A folding press plate support 27 is rotatably mounted on the support shaft 26. A bending press plate 28 is detachably attached to the support 27 at its base end.
Piston rod 30 of air cylinder 29 provided on support member 20
Are connected.

A pair of support blocks 31 rotatably provided at both ends of the support shaft 26 are provided with a bent piece support 32 formed in a substantially U-shaped plane by a plate material, and detachably attached at a base end thereof. Have been. To be located on the outer periphery of the bending press plate 28,
Five air cylinders 33 are mounted on the bending piece support 32, and bending pieces 35 are mounted on the air cylinder 33 at the ends of the piston rods so that the vertical position can be adjusted.

On the other hand, an air cylinder 36 is disposed between the upper end of each support block 31 and both side portions of the support member 20, and its base end is rotatably connected to the support member 20, and its piston rod 37 is It is connected to the upper end of the support block 31.
The support plate 2 is provided by the air cylinders 21, 22, 29, and 36.
4.The folding holding plate 28 and the bending piece support 32 are
A driving device E for approaching / separating from the vehicle is configured.

Generally, when the pocket piece P is formed, the pocket piece P is folded in two or more in order to border the upper portion of the pocket piece P as shown in FIG. Next, the periphery of the pocket piece P including the portion is bent as shown in FIG. 3 (b). Further, when the periphery of the pocket piece P is bent as shown in FIG. 3 (c), the portion M protruding from the upper portion of the pocket piece P is further inwardly provided as shown in FIG. 3 (d) as necessary. Turn it over and chamfer it.

The pocket piece P thus formed has a bent portion 70 in which only the upper portion or the peripheral edge of the pocket piece is bent, and the bent portion 70 is further bent or folded to form a portion of the bent portion 70. A bent overlapping portion 80 having an increased thickness is formed.

When the pocket piece P is placed on the support plate 24, folded in the procedure described later, and superimposed on the cloth W, a recessed part of which is partially recessed from the upper surface of the table 14 at an opposing position facing the folding overlap part 80.
50 are provided. The concave portion 50 is set to have such a depth that the bent overlapping portion 80 can escape downward from the surface of the table 14 when the bent portion 70 of the pocket piece P and the support plate 24 are pressed against the table 14 by the feed plate 19. At the same time, the bent overlap portion 80 has a width and a length that do not stick out.

On the other hand, an inclined portion 53 is provided on the sewing machine 11 side of the concave portion 50 so that the bottom surface of the concave portion 50 is raised toward the upper surface of the table 14.

A pair of chamfered plates 55 facing the support plate 24 are swingably mounted on the bent piece support 32. As shown in FIG. 3 (d), the chamfering plate 55 is of a known type in which the protruding portion M of the pocket piece P is folded inward, and the chamfering plate 55 which is swung by the air cylinder 56 folds the protruding portion M inward. It has been like that.

Work cloth folding apparatus and sewing machine configured as above
A procedure for sewing the pocket piece to the cloth W using the reference numeral 11 will be described.

First, the upper portion of the pocket piece P is folded in three as shown in FIG. 3 (a), and it is folded as shown in FIG. 2 (a).
And is mounted on the support plate 24. As shown in FIG. 4 (a), the peripheral edge of the pocket piece P is overlapped with the supporting plate 24 by the action of the driving device E so that the folded edge of the pocket piece P is placed on the supporting plate 24. Bend to the back side along the outer circumference of.

Then, as shown in FIG. 4 (b), each bent piece 35 is moved to below the support plate 24, and bent so that the peripheral edge of the pocket piece P is overlapped on the lower surface of the support plate 24. At this time, before the bent piece 35 is moved, the air cylinder 56 is placed above the protruding portion M so that the bent portion 70 does not protrude to the outer periphery of the pocket piece P as shown in FIG. It is operated to swing the chamfered plate 55 so that the chamfered plate 55 comes into contact, and the chamfered plate 55 is bitten by the protruding portion M, and is folded back inside the pocket piece P as shown in FIG. 3 (d). At this time, a bent overlap portion 80 is formed at the peripheral portion of the upper portion of the pocket piece P, which has been bent in advance into two or more portions, and particularly at the portion where the protruding portion M is folded inward.

Next, as shown in FIG. 4 (c), the members 24, 28 and 32 together with the support member 20 are lowered onto the table 14 by the action of the driving device E.

At this time, the bent portion 70 of the pocket piece P is sandwiched between the bent piece 35 and the support plate 24.

Thereafter, as shown in FIG. 4 (d), each bent piece 35 is separated from the pocket piece P, and further, as shown in FIG. 4 (e), the bent piece support 32 and the bending press plate 28 are formed. And separate them from the pocket pieces P.

In this state, the pocket piece P is pressed against the cloth W together with the support plate 24 by the feed plate 19 shown in FIG.

Then, the bent portion 70 is pressed against the table 14 together with the support plate 24, but the bent overlap portion 80 located between the concave portion 50 and the support plate 24 can release its thickness downward from the table surface.

Next, the air cylinder 22 shown in FIG. 1 is operated to horizontally move the support plate 24 rearward and away from the pocket piece P. When the support plate 24 is moved, the thickness of the bending overlapped portion 80 escapes downward from the table surface by the concave portion 50. Therefore, when the support plate 24 is horizontally moved rearward and is separated from the pocket piece P, it is folded. The bending overlap portion 80 is not pulled out of the pocket piece P, and the pocket piece P and the cloth W do not shift.

After moving the support plate 24, the feed plate 19 is moved to the needle drop point which is the sewing position of the table 14 of the pocket piece P.
During this movement, the bending overlap section 80 moves without being hooked by the inclined section 53 provided in the concave section 50. When the sewing machine 11 is operated and the feed plate 19 is moved in the X and Y directions, the pocket pieces P are sewn to the cloth W.

As described above, in the present embodiment, the concave portion 50 is provided on the table 14, and the thickness of the bent overlap portion 80 is released by the concave portion 50, so that the pocket piece P can be pulled out when the support plate 24 moves, The displacement of the pieces P and the cloth W can be prevented.

 Next, a second embodiment of the present invention will be described.

FIG. 5A is an explanatory view showing a second embodiment of the present invention from a plan view, and FIG. 5B is an explanatory view showing a cross section thereof.

As shown in the drawing, an air cylinder 91 is mounted on a frame 90, and an end of an interlocking plate 93 is connected to an end of a piston rod 92. The other end of this interlocking plate 93 is
It is swingably supported on the lower surface of a table 94 provided above.

On the other hand, the table 94 is provided with a hole 95 of the same size at the same place as the concave portion 50 of the first embodiment, and the convex portion 96 formed in a size to fit into the hole 95 from below is provided with the interlocking plate 93. Upper hole
It is provided at the position where it fits with 95.

When the hole 95 and the convex portion 96 are fitted, when the upper surface of the convex portion 96 is recessed from the upper surface of the table 94, the concave portion 100 of the second embodiment is formed. The protrusion 96 can be raised to the same height as the upper surface of the table 94, and at this time, the entire surface of the table 94 becomes flat.

In order to form the concave portion 100, an air cylinder 91 mounted on a frame 90 is moved from a table 94 having a flat surface.
To move the interlocking plate 93 down,
Lower 96. Then, the upper surface of the convex portion 96 is recessed from the upper surface of the table 94, and the concave portion 100 is formed.
The depth of the recess 100 can be adjusted as appropriate by changing the amount of swing of the interlocking plate 93 by the air cylinder 91. This depth is set to a depth at which the thickness of the bending overlap portion 80 can escape from the table surface.

By releasing the thickness of the bent overlap portion 80 in the recess 100 formed in this way, the same support plate 24 as in the first embodiment can be used.
When moving the pocket piece P, pull out the pocket piece P
And the displacement of the cloth W can be prevented.

As described above, in the second embodiment, the convex portion 96 can be lowered by the operation of the air cylinder 91, so that the concave portion 100
Can be appropriately adjusted, and the bent overlapped portion 80 can correspond to pocket pieces P having different thicknesses.

Various modifications can be freely made in the present invention without departing from the gist thereof.

[Effects of the Invention] In the present invention, a concave portion is provided corresponding to the position where the bent overlap portion of the work cloth is formed, and the thickness of the bent overlap portion is released in the concave portion, so that the movement of the support plate can be improved. It is possible to prevent the work cloth from being pulled out and the work cloth or the base cloth from being displaced.

[Brief description of the drawings]

1 to 4 show a first embodiment of the present invention.
FIG. 1 is a perspective view showing a work cloth folding apparatus and a sewing machine according to a first embodiment, and FIG. 2 shows the relationship between a table, a concave portion, and a support plate. 3) is an explanatory view showing a cross section taken along line AA of FIG. 3, FIG. 3 is an explanatory view illustrating a bent overlapping portion of the pocket piece, FIG. 4 is an explanatory view showing a bent state of the outer periphery of the pocket piece, and FIG. FIG. 6A shows a concave portion in the second embodiment of the present invention, wherein FIG.
It is explanatory drawing which showed the -B cross section. Table… 14, Support plate …… 24, Bending press plate …… 28 Bending piece …… 35, Recessed part …… 50, 100, Bending part …… 70 Bend overlapping part …… 80, Frame… 90 , Interlocking plate ... 93 holes ... 95, convex ... 96

Claims (1)

(57) [Scope of request for utility model registration] 1. A table on which a base cloth to be sewn with a cloth piece is placed, and the table is provided so as to be horizontally movable in a plane separated from the table by a predetermined distance upward, and determines the outer shape of the cloth piece after bending. A supporting plate to be bent, a peripheral bending means for bending a peripheral edge of the cloth piece placed on the supporting plate toward a back side of the supporting plate along an outer shape of the supporting plate, and a peripheral bending means. The cloth piece whose peripheral edge has been bent is pressed against the table together with the support plate, and the support plate is horizontally moved to extract the support plate from under the cloth piece. And a feed plate for moving the cloth piece to a sewing position determined on the table, wherein the thickness is partially increased when the cloth piece is bent by the peripheral edge bending means. Corresponds to the position where the fold overlap section is formed A concave portion having a depth that allows the bent overlapped portion to escape downward from the table surface when the cloth piece and the support plate are pressed against the table by the feed plate. Characteristic work cloth folding device.