JPH0665Y2 - Fabric edge travel position correction device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a cloth edge traveling position correcting device for feeding a cloth edge (a cloth edge) into a sewing portion of a sewing machine without positional deviation.

[Conventional technology]

BACKGROUND ART Conventionally, when sewing a cloth edge corresponding to a waist portion of pants or the like with a sewing machine, sewing is performed while adjusting the displacement by hand so that the seam is not displaced.

[Problems to be solved by the device]

However, when the cloth end is fed into the sewing portion of the sewing machine while being manually adjusted, a great deal of skill is required to form the seam straight at the fixed position of the cloth end. Therefore, such sewing work is considered to be a highly difficult work, and even a skilled person has a problem that it is difficult to improve productivity and it is difficult to obtain a sewn product of constant quality.

The present invention has been made in view of the above problems, and makes it possible to correct the running position of the cloth end fed to the sewing portion of the sewing machine, and thus to form a straight stitch at the fixed position of the cloth end. An object of the present invention is to provide a cloth edge traveling position correction device.

[Means for solving problems]

The cloth edge traveling position correcting device according to the present invention is provided with a support base arranged to face a cloth end traveling path from above, and a lateral direction having an axis along a traveling direction of the cloth edge on one side of the support base. A first operation piece whose base end is rotatably supported via a pin;
A second operation piece whose base end portion is rotatably supported on the other side of the support base via a lateral pin having an axis in a direction along the running direction of the cloth end; a first operation piece and the support base; A first spring that is stretched between and constantly pulls the first operation piece upward;
A second spring that is stretched between the second operation piece and the support table to constantly pull the second operation piece upward, and a second spring that is attached to the support table in an inverted shape corresponding to the first operation piece. A first air cylinder and a second air cylinder, which corresponds to the second operation piece and is attached to the support table in an inverted manner, are provided, and the distal end portion of the operating rod of the first air cylinder is pulled by the pulling force of the first spring. The first operating piece is constantly elastically contacted, and when the operating rod of the first air cylinder is retracted, the first operating piece is brought from the downward inclined posture to the horizontal posture, and the operating rod of the first air cylinder is projected. The first operation piece is brought from the horizontal posture to the downward inclined posture so that the free end portion of the first operation piece pushes the cloth end traveling on the traveling path, and the second spring is attached to the tip end portion of the operating rod of the second air cylinder. The second operation piece is constantly elastically contacted by the pulling force, and the second operation piece is brought from the downward inclined posture to the horizontal posture by retracting the operation rod of the second air cylinder. Of the second operation piece from the horizontal posture to the downward inclined posture so that the free end portion of the second operation piece presses the cloth edge traveling on the traveling path. The rotating directions are opposite to each other.

[Action]

In the cloth edge traveling position correcting device having this structure,
When the operating rod of the air cylinder is made to project from the retracted state, the projecting speed is high, so that the first operating piece is instantaneously brought from the horizontal posture to the downward inclined posture against the tensile force of the first spring. 1 The free end of the operation piece presses the cloth edge while traveling on the traveling path. In this case, since the base end portion of the first operation piece is supported by the support base via the lateral pin, and the axis of the lateral pin is in the direction along the running direction of the cloth edge, When the free end portion presses the tip, the cloth end is pushed by the free end portion of the first operation piece in a direction orthogonal to the traveling direction. The same action as this is exhibited when the working rod of the second air cylinder is projected from the retracted state and the free end portion of the working rod pushes the cloth end traveling along the traveling path. Since the first operation piece and the second operation piece rotate in opposite directions, the direction in which the cloth end is pushed by the free end portion of the first operation piece and the free end portion of the second operation piece. The direction in which the cloth edge is pushed is opposite to each other. Therefore, the traveling position of the cloth edge is corrected in the direction orthogonal to the traveling direction by appropriately performing the operation of projecting the operating rod of the first air cylinder or the operating rod of the second air cylinder.

〔Example〕

FIG. 1 is a schematic perspective view showing a cloth end traveling position correcting device T according to an embodiment of the present invention, FIGS. 2 and 3 are explanatory views of the operation of the device T, and FIG. 4 is a use state of the device T. FIG.

As shown in FIG. 1, the traveling position correcting device T includes a support base 38, which is a rectangular parallelepiped member and is disposed to face the travel path L of the cloth end A ′ from above, and one side of the support base 38. Material edge A '
A lateral pin 32 having an axis along the traveling direction X of the
Via a first operation piece 28 whose base end portion 28a is rotatably supported via a horizontal pin 33 having an axis line along the running direction X of the cloth end A'on the other side of the support base 38. A second operation piece 29 having a base end portion 29a rotatably supported;
A first spring 26 that is stretched between the operation piece 28 and the support base 38 to constantly pull the first operation piece 28 upward.
A second spring 27 that is stretched between the second operation piece 29 and the support base 38 to constantly pull the second operation piece 29 upward.
A first air cylinder 30 corresponding to the first operation piece 28 and inverted to the support base 38; and a first air cylinder 30 corresponding to the second operation piece 29 and inverted to the support base 38. 2 air cylinders 31 are provided.

Further, the first operating piece 28 is always elastically contacted with the tip end portion of the operating rod 30a of the first air cylinder 30 by the tensile force of the first spring 26. Similarly to this, the second operation piece 29 is always elastically contacted with the distal end portion of the operating rod 31a of the second air cylinder 31 by the tensile force of the second spring 27. When the operating rod 30a of the first air cylinder 30 is retracted, the first operating piece 28 is brought from the downward inclined posture shown by the phantom line in FIG. 1 to the horizontal posture shown by the solid line in FIG. Due to the protrusion of the operating rod 30a of the air cylinder 30, the first operating piece 28 is brought from the horizontal posture shown by the solid line in the figure to the downward inclined posture shown by the phantom line in the figure, and the free end portion 28b of the first operating piece 28 travels as described above. The cloth edge A'while traveling on the road L is pressed. Similarly, when the actuating rod 31a of the second air cylinder 31 is retracted, the second operating piece 29 is brought from the downward inclined posture shown by the phantom line in the figure to the horizontal posture shown by the broken line in the figure. Due to the projection of the operating rod 31a of the 2 air cylinder 31, the second operation piece 29 is brought from the horizontal posture shown by the broken line in the figure to the downward inclined posture shown by the phantom line in the figure, and the free end portion 29b thereof is the above-mentioned. The cloth end A'while traveling on the traveling path L is pressed. Furthermore, the first operation piece 28 and the second operation piece 29 are turned in opposite directions.

The support base 3 of the traveling position correction device T described with reference to FIG.
Indicated at 8 is an inverted air cylinder 2 for raising and lowering the support base 38 between a standby position which is far from the traveling path L of the cloth end A'and an operating position which is close to the traveling path L of the cloth end A '.
4 working rods 24a are connected.

The operation of the traveling position correction device T having the above structure will be described with reference to FIGS. 2 and 3.

FIG. 2 shows a case where the cloth end A ′ is moved to the right D1 by the first operation piece 28. In this figure, the running direction of the cloth end A ′ is a direction orthogonal to the paper surface. When the operating rod 30a of the first air cylinder 30 is projected from the retracted state, the operating rod 30a projects at high speed because the first air cylinder 30 operates by the air pressure. Therefore, the first spring 26 (see FIG. 1) is pulled against the tensile force of the first
The operating piece 28 is momentarily brought from the horizontal posture shown by the phantom line to the downward inclined posture shown by the solid line about the lateral pin 32 (see FIG. 1), and the free end portion 2 of the first operating piece 28 is moved.
8b presses the cloth edge A'while traveling on the traveling path as shown in FIG. In this case, when the free end portion 28b of the first operating piece 28 presses the cloth edge A ', the cloth edge A'is moved to the first operating piece 28.
Is pushed to the right D1 by the free end 28b of the
Move to.

FIG. 3 shows the case where the cloth end A ′ is moved to the left D2 by the second operation piece 29. In this figure, the running direction of the cloth end A ′ is the direction orthogonal to the paper surface. When the operating rod 31a of the second air cylinder 31 is projected from the retracted state, the operating rod 30a projects at high speed because the first air cylinder 30 operates by the air pressure. Therefore, the second spring 27 (see FIG. 1) is pulled against the second force against the tensile force.
The operation piece 29 is momentarily brought from the horizontal posture shown by the phantom line to the downward inclined posture shown by the solid line about the lateral pin 33 (see FIG. 1), and the free end portion 2 of the first operation piece 29 is moved.
9b presses the cloth edge A'while traveling on the traveling path as shown in FIG. In this case, when the free end portion 29b of the first operating piece 29 presses the cloth edge A ', the cloth edge A'will move to the first operating piece 29.
Is pushed to the left D2 by the free end 29b of the
Move to.

In this way, the cloth end A ′ is pushed to the right D1 by the free end portion 28a of the first operation piece 28, and the free end portion 2 of the second operation piece 29 is pushed.
If the cloth edge A'is pushed to the left D2 at 9a, the position of the cloth edge A'during traveling is appropriately corrected to the right D1 or the left D2 by performing one of the operations. It is possible to

The first air cylinders 30 and 31 for rotating the first operation piece 28 and the second operation piece 29 are adapted to operate based on the detection signal of the sensor 60 shown in FIGS. 2 and 3. There is. The sensor 60 is composed of light emitting elements 61 and 62 arranged vertically above and below the traveling path of the cloth edge A ′, and a light receiving element 63 having a function of separately receiving the light of these light emitting elements 61 and 62. Become. The cloth edge A ′ does not block light traveling from the light emitting element 61 to the light receiving element 63, and the light emitting element 6
It is set so that the proper traveling state is obtained when the vehicle is traveling at a position where the light from the light receiving element 63 from 2 is blocked.
When the light receiving element 63 receives the light from both the light emitting elements 61, 62, the first air cylinder 30 operates as described in FIG. 2 by the detection signal, and the light receiving element 63 determines which of the light emitting elements 61, 62. When the light of 62 is no longer received, the detection signal causes the second air cylinder 30 to operate as described with reference to FIG. As a result, the cloth edge A'is always kept in a proper traveling state.

FIG. 4 shows a state in which the running position of the folded cloth end A'of the annular cloth A is corrected by the operation of the running position correcting device T and the cloth end A'is sewn by the sewing machine 1. . In the figure, 14 and 15 are latching rods provided on the fixed machine frame 10, and 16 and 17 are latching rods provided on the movable machine frame 13, with the movable machine frame 13 relative to the fixed machine frame 10. It is possible to move in the perspective direction. The cloth edge A'of the annular cloth A is the movable machine frame 1
3 is brought closer to the stationary machine frame 10 to bring the respective hooking rods 14, 15 and 1
6, 15 and 1 with the spacing of 6, 17 reduced
6 and 17, the movable machine frame 13 is moved away from the fixed machine frame 10 after the attachment, and the respective locking rods 14, 15 and 16, 1 are attached.
The cloth end A'is tensioned by expanding the interval of 7. The cloth edge A'is folded back to the outside.

When the sewing machine 1 is operated in the state shown in FIG. 4 and the cloth feed roller 8 of the sewing machine 1 and the predetermined latching rods 14, 15, 16 are rotated to move the cloth end A'in the X direction, the cloth end A'is Sewing machine 1
Is continuously fed to the sewn portion provided with the cloth presser 70, and the cloth end A'is sewn. At this time, the displacement of the cloth end A'is detected by the above-mentioned action of the sensor 60, and the traveling position correcting device T receives the detection signal and operates as described with reference to FIGS. Correct the traveling position of the end A'to a proper state. Therefore, the sewing machine 1 forms a straight seam at a fixed position of the cloth edge A '. The sewing machine 1 is equipped with a cloth edge fall prevention roller 22, a cloth edge winding mechanism 34, and the like in addition to the traveling position correction device T. Since the mechanism 34 is not the subject of the present invention, a detailed description of its structure and operation will be omitted.

[Effect of device]

In the cloth edge traveling position correcting device according to the present invention, the first operation piece and the second operation piece are moved downward by the air cylinder.
There is an effect that the traveling position correction can be performed in an extremely short time. In particular, since the traveling position is corrected by pushing the cloth edge with the free ends of the first operation piece and the second operation piece, the cloth edge is pulled at the free ends of the first operation piece and the second operation piece. It has the outstanding effect of not being scratched and fuzzing.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a cloth edge traveling position correcting device according to an embodiment of the present invention, FIGS. 2 and 3 are explanatory views of the operation of the device, and FIG. 4 is an explanatory view of a usage state of the device. is there. T ... Travel position correction device, A '... Fabric edge, L ... Fabric edge traveling path, X ... Fabric edge traveling direction, 26 ... First spring, 27
... second spring, 28 ... first operation piece, 28a ... base end portion of first operation piece, 28b ... free end portion of first operation piece, 29 ...
2nd operation piece, 29a ... Base end part of 2nd operation piece, 29b ... Free end part of 2nd operation piece, 30 ... 1st air cylinder, 30
a ... operating rod of the first air cylinder, 31 ... second air cylinder, 31a ... operating rod of the second air cylinder, 32 ... lateral pin, 33 ... lateral pin, 38 ... support base.

Claims (1)

[Scope of utility model registration request] 1. A support base (38) arranged to face a running path (L) of the cloth end (A ') from above, and a cloth end (A') on one side of the support base (38).
The lateral pin (3 with an axis along the direction of travel (X) of
2) The first operation piece (28) whose base end portion (28a) is rotatably supported via the 2), and the running direction of the cloth end (A ') on the other side of the support base (38).
A second operation piece (29) whose base end (29a) is rotatably supported by a lateral pin (33) having an axis extending in the direction of (X).
And a first spring that is stretched between the first operation piece (28) and the support base (38) and always pulls the first operation piece (28) upward.
(26), a second spring (27) that is pulled between the second operation piece (29) and the support base (38), and constantly pulls the second operation piece (29) upward. Corresponding to the operation piece (28), the above support base (38)
A first air cylinder (30) mounted upside down on the
A second air cylinder (31) which is attached to the support base (38) in an inverted manner corresponding to the second operation piece (29), and the tip of the working rod (30a) of the first air cylinder (30). The first operating piece (28) is constantly elastically contacted to the portion by the pulling force of the first spring (26), and the first operating piece (28a) is retracted by retracting the operating rod (30a) of the first air cylinder (30). 28) is brought to a horizontal posture from the downward inclined posture, and the first operation piece is caused by the protrusion of the operating rod (30a) of the first air cylinder (30).
(28) is brought from the horizontal posture to the downward inclined posture, and its free end portion (28b) presses the cloth end (A ') traveling on the traveling path (L), and the second air cylinder ( The second operation piece (29) is constantly elastically contacted by the pulling force of the second spring (27) to the distal end of the operation rod (31a) of (31) and the operation rod (31a) of the second air cylinder (31). ), The second operation piece (29) is brought from the downward inclined posture to the horizontal posture, and the second operation piece (29) is projected by the operation rod (31a) of the second air cylinder (31).
(29) is brought from a horizontal posture to a downward inclined posture, and its free end portion (29a) presses the cloth end (A ') traveling on the traveling path (L). (28) and a second operation piece (29), wherein the turning directions are opposite to each other, the running position correcting device for the cloth edge.