JP2879434B2 - Chest darts seamer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chest dart seamer which can handle a wide variety of chest darts for men's clothing and automates the setting of a patch cloth.

[0002]

2. Description of the Related Art Conventionally, there are a diamond dart A1 and a manipire dart A2 as shown in FIG. 5 as the shape of a chest dart for men's clothing, and the size is also various according to a dart length L and a dart depth D. However, as the chest dart seamer a for chest dart stitching, only the one shown in FIG. 6 is known.

[0003] The chest dart seamer a has one end of a guide rail d having a substantially L-shaped cross section having a side edge b and a guide ridge c formed so as to match a dart line in a feed direction of the material W. A guide part g attached to the lower end of the arm part e that is controlled to move in the lateral direction and provided on the sewing machine head f
The guide rail d is slidable in correspondence with the dart line, and the material W placed on the table h is slid on the table h while being held down by the guide rail d. The dart sewing is performed along the side edge b of the guide rail d during this transfer.

However, as the guide rail d,
The material W must be securely pressed against the table h at least over the dart length L so that the material W does not suffer from a problem such as twisting, and must be moved in front and rear and right and left in a plane so as to match the dart line.

For this reason, the guide rail d is made of a highly rigid metal material by machining such as cutting and bending. In order to satisfy the above conditions, especially the guide rail d is used.
D1 of the bottom surface d1 and the groove d where the roller g1 of the guide g contacts
2. It is necessary to increase the processing accuracy of the side surface d3, the upper end surface d4, etc., and there is no problem at the time of mass production of several thousand darts, but in recent multi-product small quantity (several tens) production. Due to changes in the dart depth D and the dart length L, the production cost and delivery time of the guide rail d are becoming obstacles.
For this reason, chest dart seamer a that can respond to high-mix low-volume production
Is desired.

In the chest dart stitching, the same cutting cloth W2 is simultaneously sewn on the front body W1, but since the sewing (processing) direction is the same, the left and right front bodies W1 are used as shown in FIGS. In addition, the setting position of the backing cloth W2 must be above or below the front body W1, but the above-mentioned chest dart seamer a is not provided with this setting means, so that the worker's manual work is required. At present, workability is poor and automation has been desired.

[0007]

SUMMARY OF THE INVENTION The present invention makes it possible to perform high-quality chest dart stitching by preventing twisting and stitching of a material, and at the same time, eliminates cost problems in the production of many kinds and in small quantities.
Another object of the present invention is to provide a chest dart seamer that completely automates the setting of a patch cloth.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a function of pressing a material against a mounting portion and moving the material in consideration of problems such as adaptation to small-volume production of various kinds and workability of setting a patch cloth based on the above-mentioned prior art. The material pressing plate, which has the following, is connected to the moving body that is controlled to move in the dart processing direction, is connected to the guide plate that is controlled to move in the front-rear direction, and moves the material pressing plate in a plane along the combined trajectory of the XY axes, A chest dart seamer whose main point is to provide a holding cloth holding plate movably in the front-rear direction above the set plate and to hold a part of the holding cloth from the end of the set plate in the same manner as the front body in a hanging state The above-mentioned drawbacks are provided to eliminate the above drawbacks.

The chest dart seamer is composed of a table, a sewing head, a presser fitting, a moving body, a guide plate, a material pressing plate, a guide roller, a set plate, and control means, and the table has a mounting portion for mounting the material. At the same time, the sewing head is provided at the rear of the mounting portion, and a presser fitting for holding a material near a sewing point by the sewing head is provided.

The movable body is controlled to move in the left and right dart processing directions above the table, and a linear guide plate and a material pressing plate are connected to the movable body so as to interlock with each other.

The material pressing plate is controlled to be attached to and detached from the material on the mounting portion, the guide plate is brought into contact with a guide roller, and the guide roller is controlled to move in the front-rear direction.

The control means controls the moving amount of the moving body and the guide roller, and calculates the first and second chest darts calculated from the input values of the two dart lengths and dart depths in the chest dart. It is moved by the inclination angle and length of the two linear portions, respectively.

[0013] The set plate is for placing a material on the mounting portion of the table, is provided at the work position side in front of the table, and is controlled to retreat to the table side.

The set plate absorbs and holds a part of the material, and has a pressing cloth pressing plate provided with a hook-like claw on the tip end above the set plate.

The pressing cloth presser plate is configured to be movable up and down on the distal end side and to be movable back and forth in the front-rear direction on the table side.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a chest dart seamer according to the present invention, in which a table 2 is provided on a machine frame (not shown). A work feeding device 3 for feeding a front body W1 as a material W and a patch W2 onto the table 2 is provided on a work position side in front of the table.

The material feeder 3 comprises a set plate 4 and a material holding mechanism 5, and the set plate 4 comprises a plate body 6 formed in a hollow shape. With a protruding piece 4a
Are provided on the surface, and the set plate 4 is connected to a suction device (not shown) so that the material W on the set plate 4 as the material W on the set plate 4 is removed by the suction action of the suction device. It is made to hold by suction.

The set plate 4 is connected to a pneumatic cylinder 8 provided below the table 2, and the cylinder 8 is operated to move the set plate 4 in the front-rear direction Y.
-Y, and the forward / backward control is performed on the mounting portion 9 of the material W which is the front part of the table 2.

The material holding mechanism 5 has slide portions 10 and 10a on both sides of the surface of the set plate 4 which are controlled to advance and retreat toward the table 2 in the front-rear direction YY.
The support bar 11 is suspended horizontally above the table 2.

The sliding portions 10 and 10a are composed of a pneumatic cylinder 12, a linear guide 13, and a sliding body 14.

Reference numeral 15 denotes a pressing cloth pressing plate for pressing a pressing cloth W2 placed on the front body W1 which is sucked and held by the set plate 4, and the pressing cloth pressing plate 15 is formed in a comb-tooth plate shape by a material having elasticity. A claw piece 15a formed in a hook shape downward is provided at the distal end side, and the base end side of the pressing cloth holding plate 15 is supported by the support bar 11 so that the distal end side is directed to the table 2 side. And can swing freely.

The support bar 11 has a pneumatic cylinder.
The rod 16a of the cylinder 16 is brought into contact with the upper surface of the presser foot presser plate 15, and the cylinder 16 is operated to swing the tip end of the presser foot presser plate 15 up and down. The distal end of the set 15 can freely contact the set plate 4.

Reference numeral 17 denotes a front body W1 mounted on the set plate 4.
The front body presser plate for holding down the front body presser plate 17
Is formed in a plate shape by a material having elasticity, and a sponge member 18 is provided on the distal end side, and the base end side of the front body holding plate 17 is supported by a support bar so that the distal end side is directed to the table 2 side. It is swingable by connecting to 11.

Further, the front body presser plate 17 is provided so as to overlap below the presser foot presser plate 15, and
Is extended from the front end of the front body holding plate 17 to the table 2 side.

Reference numeral 19 denotes a keeper device for holding the material W sent onto the mounting portion 9 of the table 2 by the material feeding device 3. A rectangular plate-shaped sliding plate 20 that is provided on the table 2 at a position rearward of the part 9 and that the projecting piece 4a at the tip of the set plate 4 of the material feeder 3 abuts,
A connecting member 21 is provided movably in the front-rear direction Y-Y, a connecting member 21 is provided on the rear end side of the slide plate 20, and a pneumatic cylinder 22 fixed and provided on the rear side of the table 2 is connected to the connecting member 21. The sliding plate 20 is controlled to move back and forth by the operation of.

Reference numeral 23 denotes a keeper member.
Are a number of pressing pins 24, 24a formed vertically on the tip side.
Are provided, and the keeper member 23 is connected to the connecting member 21 so as to be vertically swingable so that the pressing pins 24, 24a can be attached to and detached from the mounting portion 9 of the table 2 at the front end of the sliding plate 20. doing.

The keeper member 23 is constantly urged upward by the elastic force of the spring 25 and swings downward so as to be seated on the mounting portion 9 of the table 2. It is connected to.

Reference numeral 27 denotes a sewing machine. The sewing machine 27 is provided on the rear side of the mounting portion 9. The sewing machine head 28 of the sewing machine 27 is provided on the left side which is one side of the table 2 so as to face the working position. A sewing point P corresponding to the needle 29 of the head 28 is located behind the mounting portion 9 of the table 2 and a needle hole 30 is provided.

Further, a feed dog 31 for feeding the material W is provided near the sewing point P, and a presser fitting 32 which is vertically movable for holding the material W is provided near the sewing point P.

Reference numeral 33 denotes a material X-axis transfer mechanism for sending the material W set on the mounting portion 9 at the front of the table 2 to the X-axis which is the dart processing direction XX. A linear guide 34 is provided above and below the left and right dart processing directions XX, and is connected to an appropriate drive source (not shown) and is movably controlled by the linear guide 34.
A pair of left and right arms 36, 36a are suspended from the moving bodies 35, 35a.

The arms 36 and 36a are composed of a vertical upper arm 37 and a horizontal lower arm 38. The vertical upper arm 37 has two link rods.
39, 39a are provided in parallel and vertically to form a pair, and the upper ends of the link rods 39, 39a are pivotally attached to the moving bodies 35, 35a,
The lower ends of the link rods 39 and 39a are pivotally connected to the base of a horizontal lower arm 38 extending toward the working position, and the horizontal lower arm 38 is moved in the front-rear direction Y.
-Y can move horizontally.

A pneumatic cylinder 40 is connected to a link rod 39 of one vertical upper arm 37, and the operation of the cylinder 40 controls the movement of the horizontal lower arm 38 in the front-rear direction YY.

An upper mounting portion 43 in which a guide plate 41 and a material pressing plate 42 are detachably mounted between the distal ends of the arms 36 and 36a in the extending direction of the horizontal lower arm 38.
, A lower mounting portion 44 is provided, and the guide plate 41 and the material pressing plate 42 are linked to move with the moving bodies 35 and 35a.

The upper mounting portion 43 has a bracket 45 fixed to the opposing surface of the horizontal lower arm portion 38, and a linear guide plate 41 is suspended between the brackets 45 in a state parallel to the processing direction XX. .

The lower mounting portion 44 is provided with vertical moving bodies 46 and 46a movably up and down on the opposing surface of the horizontal lower arm 38, and a band-shaped lower fixing member is provided between the vertical moving bodies 46 and 46a. The plate 47 is fixed in a horizontal state, and the base on one side of the plate-shaped material pressing plate 42 is fixed to the lower fixing plate 47.

Reference numerals 48 and 48a denote pneumatic cylinders for controlling the vertical movement of a material pressing plate 42 for pressing the material W set on the mounting portion 9 at the front of the table 2.
Reference numerals 8 and 48a are provided vertically from the outer surface of the horizontal lower arm 38 and connected to the lower fixing plate 47.

The material pressing plate 42 is provided with a non-slip member 49 having no slip on the lower surface, and the shape of the side edge portion 42a on the other side does not need to conform to the dart line. In order to suppress the pressure, it is sufficient to form the line roughly near the dart line with a rough processing accuracy.

Reference numeral 50 denotes a material Y-axis transfer mechanism for feeding the material W pressed by the material holding plate 42 to the Y-axis, which is the front-back direction Y-Y. A rotary screw shaft 51 formed as Y is provided on the side of the sewing machine 27, and a motor 52 is connected to the rotary screw shaft 51.

A slide 53 is connected to the rotary screw shaft 51, a base of the support bracket 54 is connected to the slide 53, and a tip 54a is located near the front of the sewing head 28 on the working position side. A guide roller 55 is attached to this tip 54a.
Is mounted rotatably, and the guide roller 55 is brought into contact with the side edge 41a of the guide plate 41.

The movement control of the material Y-axis transfer mechanism 50 and the material X-axis transfer mechanism 33 is controlled by numerical control means (not shown) composed of a computer. First straight part B in chest dart
Numerical value of the dimension from the starting point P1 to the curved point P2, the numerical value of the dimension from the curved point P2 of the second linear portion B2 to the end point P3, and the numerical value of the dimension from the curved point P2 to the side edge Wa of the material W And the numerical value of the dimension from the end point P3 to the side edge Wa of the material W, the numerical control means calculates the angle from the start point P1 to the curved point P2, and the angle from the curved point P2 to the end point P3. The material pressing plate 42 is controlled in the X and Y axes by controlling the amount of movement of the motor 52 of the shaft transfer mechanism 50 and the moving bodies 35 and 35a of the material X-axis transfer mechanism 33.

Next, the operation of the chest dart seamer according to the present invention will be described. First, on the set plate 4, a part of the front body W1, which is the material W, is a projection of the set plate 4.
4a, the front body W1 is placed in a state of hanging down from the front end, and the set body 4 sucks and holds the front body W1 by the suction action of the suction holes 7, 7a.

Next, the patch cloth W2 is set so as to be aligned with the front body W1 on the left and right sides, and to be superimposed on or below the front body W1.

In the former case in the set state, the cylinder 12 of the material holding mechanism 5 is operated to
After the support bar 11 is retracted, the claw 15a of the pressing cloth holding plate 15 is positioned on the protruding piece 4a of the set plate 4, and then the pressing cloth W2 is mounted on the front body W1 of the set plate 4 on the protruding piece 4a. Set so that it does not protrude from the outside.

In the case of the latter, the cylinder 12 of the material holding mechanism 5 is operated in the opposite direction to the above, and the support bar 11 is advanced, so that the claw pieces 15a of the pressing cloth holding plate 15 are moved. After being positioned forward of the protruding piece 4a of the set plate 4, the backing cloth W2 is set on the front body W1 on the set plate 4 so that a part thereof projects outward from the protruding piece 4a.

Thereafter, the cylinder 16 of the material pressing mechanism 5 is operated to apply the claw piece 15a of the pressing cloth pressing plate 15 to the pressing cloth W2 on the set plate 4, or to press the claw piece 15a of the pressing cloth pressing plate 15. In a state of being located outward from the tip of the set plate 4, the claw piece 15a is applied to the patch cloth W2 projecting from the protruding piece 4a of the set plate 4, and a part of the patch cloth W2 is hung down.

Next, the set plate 4 holding the material W is advanced to the table 2 side by the operation of the cylinder 8, and the set plate 4 is moved onto the mounting portion 9 of the table 2, and the material W is folded in two. When the slide plate 20 of the keeper device 19 is moved forward to a predetermined position by the cylinder 22 and stopped beforehand, the set plate 1
The front end abuts, and the material W is set at such a position.

Here, a part of the patch cloth W2 is replaced with the front body W1.
Similarly, when a part is held in a state hanging down from the tip of the set plate 4, the hanging down part enters under the front body W <b> 1 and the patch cloth W <b> 2 is stacked under the front body W <b> 1. It is set on the receiver 9 of the table 2.

Next, the keeper member 23 of the keeper device 19 will be described.
Is pivoted downward by the operation of the cylinder 26, and the pressing pins 24, 24a... Of the keeper member 23 pinch and fix the vicinity of the bent portion of the material W set on the mounting portion 9, and thereafter,
Suction of the suction holes 7, 7a ..., presser foot presser plate 15, front body presser plate
The holding state by 17 is released, the set plate 4 is retracted, and waits at the initial position.

The movement of the moving bodies 35 and 35a in the material X-axis transfer mechanism 33 is controlled by the arms 36 and 36a to a position above the material W of the mounting portion 9 held and fixed by the keeper device 19. The material pressing plate 42 and the guide plate 41 mounted on the lower mounting portion 44 and the upper mounting portion 43 to be moved are moved.

The arm portions 36 and 36a are controlled to retreat by the operation of the cylinder 40, and the side edge 41a of the guide plate 41 is brought into contact with the guide roller 55 of the material Y-axis transfer mechanism 50 while being constantly pressed.

Thereafter, the lower mounting portion 44 is controlled to move downward by the operation of the cylinders 48 and 48a in the material X-axis transfer mechanism 33, and is held and fixed by the keeper device 19 with the material pressing plate 42 mounted on the lower mounting portion 44. Material W of mounting part 9
Hold down.

After releasing the pinching and fixing state by the keeper device 19, the first linear portion B1 and the second linear portion B1 are obtained from the input values of the four types corresponding to the individual chest darts input to the numerical control means. The inclination angle and length of the linear portion B2 are calculated, and the moving members 35 and 35a in the material X-axis transfer mechanism 33 and the guide rollers 55 in the material Y-axis transfer mechanism 50 are controlled to move the material pressing plate 42 into darts. By controlling the movement to the sewing point P on the left side while controlling the XY axes in the direction XX and the front-back direction YY, the material W sent by the material pressing plate 42 follows the synthetic trajectory of the XY axis control. In the process of moving, chest dart sewing of a desired line is performed.

[0053]

In summary, the present invention provides a sewing machine head 28 provided behind the mounting portion 9 at the front of the table 2 on which the material W is mounted, and a presser for holding the material W near the sewing point P by the sewing machine head 28. A moving body 3 provided with a metal fitting 32 and movable above and below the table 2 in left and right dart processing directions XX.
5 and 35a are provided, and a linear guide plate 41 and a material pressing plate 42 are connected to the moving bodies 35 and 35a so as to interlock with each other,
The material pressing plate 42 is controlled to be attached to and detached from the material W of the mounting portion 9, and the side edge 41 a of the guide plate 41 is brought into contact with the guide roller 55, and the guide roller 55 is moved in the dart processing direction X.
And a control means for controlling the movement of the moving bodies 35, 35a and the guide roller 55, the control means comprising two dart lengths L and a dart depth in the chest dart. To move the material pressing plate 42 at the inclination angle and length of the first straight part B1 and the second straight part B2 of the chest dart calculated from the input value of D.
Since the amount of movement of the moving bodies 35 and 35a and the guide roller 55 is controlled, the holding metal 32 can prevent the material W from being twisted and sewn at the sewing location.
However, high-quality chest dart sewing can be performed, and the material pressing plate 42 can move the material W in a desired dart line on the placement section 9 in a plane, so that accurate chest dart sewing can be performed.

Also, since the number of input values to the control device is only four, the input operation is simple, the design can be easily changed and the order can be changed at the time of low-volume, high-mix low-volume production. Chest dart shape,
It becomes possible to correspond to the size.

Further, since the guide plate 41 only needs to have a single function of forming a straight line and maintaining contact with the guide plate 41, the processing cost can be reduced, and the However, since it is only necessary to provide a single function of pressing the material W against the mounting portion 9 to move the material W, the material pressing plate 42 is a simple plate-like member, and the processing cost can be reduced. The reduction can eliminate the cost problem at the time of high-mix low-volume production.

Further, a set plate 4 is provided on the mounting portion 9 of the table 2 for holding a part of the material W by suction at a work position side in front of the table 2 and is controlled to advance and retreat. Pressure plate with hook-shaped claw pieces 15a
15 is provided, and the backing presser plate 15 is configured such that the distal end side can move up and down and move back and forth to the table 4 side. Therefore, on the front body W1 of the set plate 4, like the front body W1, Since the patch cloth W2 can be held in a state where a part thereof hangs down from the tip of the set plate 4, a state in which the patch cloth W2 is stacked under the front body W1 only by moving the set plate 4 onto the mounting portion 9 Since the automatic setting can be performed automatically, the operability can be remarkably improved as compared with the conventional manual operation, and the practical effect is extremely large.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a chest dart seamer according to the present invention.

FIG. 2 is a sectional view of an essential part of the chest dart seamer.

FIG. 3 is an explanatory diagram of an operation of the material feeding device.

FIG. 4 is another operation explanatory view of the material feeding device.

FIG. 5 is a diagram showing various types of chest darts.

FIG. 6 is a partial perspective view of a conventional chest dart seamer.

FIG. 7 is a diagram showing a guide state of a guide rail by a guide unit in the chest dart seamer.

[Explanation of symbols]

 2 Table 4 Set plate 9 Placement section 15 Pressing cloth presser plate 15a Nail piece 28 Sewing head 32 Presser bracket 35, 35a Moving body 41 Guide plate 41a Side edge 42 Material pressing plate 55 Guide roller

Claims (2)

(57) [Claims] 1. A sewing machine head is provided behind a placing portion at a front portion of a table on which a material is placed, a holding metal fitting for holding a material near a sewing point by the sewing head is provided, and left and right dart processing is performed above the table. A movable body that is movable in the direction is provided, and a linear guide plate and a material pressing plate are linked to the moving body so as to interlock with each other. A guide edge of the chest dart, the guide roller being movable in the front-rear direction perpendicular to the dart processing direction, and a control means for controlling the movement of the moving body and the guide roller. The material pressing plate is moved by the inclination angle and length of the first straight part and the second straight part of the chest dart calculated from the input values of the dart length and dart depth. A chest dart seamer characterized in that the moving amount of a moving body and a guide roller is controlled so as to move. 2. The chest dart seamer according to claim 1, wherein a part of the raw material is sucked and held on a work position side in front of the table, and a set plate that is controlled to move forward and backward is provided on a mounting portion of the table. A chest dart seamer characterized in that a pressing cloth presser plate having a hook-like claw piece is provided on the distal end side thereof, and the distal end side of the pressing cloth presser plate is movable up and down, and is movable back and forth to the table side. .