US20060191452A1

US20060191452A1 - Sequin device

Info

Publication number: US20060191452A1
Application number: US11/360,917
Authority: US
Inventors: Kyung Jo
Original assignee: Sunstar Precision Co Ltd
Current assignee: Sunstar Precision Co Ltd
Priority date: 2005-02-25
Filing date: 2006-02-23
Publication date: 2006-08-31
Also published as: CN1824869A; KR100597201B1; CN1824869B

Abstract

A sequin device which is mounted on a side portion of a head of a sewing machine in order to draw a sequin from a sequin roll and place the sequin on an object to be sewn while performing a cutting operation with respect to the sequin is disclosed. The sequin device can stably feed a sequin from a sequin roll provided on a support plate with a simple structure and simplify the manufacturing process and reduce manufacturing costs thereof.

Description

BACKGROUND OF THE INVENTION

1. Field of the invention
The present invention relates to a sequin device, which is mounted on a side portion of a head of a sewing machine in order to draw a sequin from a sequin roll and place the sequin on an object to be sewn while performing a cutting operation with respect to the sequin, and more particularly to a sequin device, which can stably feed a sequin from a sequin roll provided on a support plate with a simple structure and simplify the manufacturing process and reduce manufacturing costs thereof.
2. Description of the Prior Art
As generally known in the art, a sequin (or a spangle) is made of a synthetic resin film having a predetermined width and is fabricated in a circular shape formed at a center thereof with a hole having a predetermined size. A sequin roll used for sewing work is obtained by combining plural sequins in series. Sequins drawn from the sequin roll are cut one by one by means of a sequin sewing device in such a manner that the sequins can be fixed to an object to be sewn.
Japanese Unexamined Patent Publication No. 2004-167097 discloses a conventional sequin sewing device.
The conventional sequin sewing device disclosed in the above Japanese Unexamined Patent Publication places sequins on the upper surface of a support plate by releasing the sequins from a sequin roll wound around a reel and feeds the sequins in a predetermined pitch unit corresponding to the size of one sequin according to the operation of a transfer lever. In addition, the conventional sequin device cuts the sequins drawn from the sequin roll one by one in combination with the up/down movement of a needle bar of the sewing device and applies the sequins to an object to be sewn.
FIG. 1 is a view illustrating the conventional sequin sewing device 1 attached to a head part of a sewing device disclosed in the above Japanese Unexamined Patent Publication, and FIG. 2 is a partially enlarged perspective view illustrating the detailed structure of the sequin device 5 provided in the sequin sewing device 1 shown in FIG. 1. As shown in FIGS. 1 and 2, the sequin sewing device 1 includes a base block 3, which is installed on a side portion of a head 2 of the sewing device using bonding units and a plurality of link structures, a reel holder 4 rotatably installed at an upper portion of the base block 3 so as to fix a reel, around which a sequin roll is wound, and the sequin device 5, which is installed at the lower portion of the base block 3 so as to feed sequins released from the reel in a predetermined pitch unit using a plurality of mechanical devices.
The sequin sewing device 1 is installed using a plurality of link structures and cylinders in such a manner that the sequin sewing device 1 can reciprocate up and down with respect to the head 2 of the sewing device. The sequin sewing device 1 is lifted such that typical embroidery work is not interrupted when sequin sewing work is not performed, or is pulled down when the sequin sewing work is performed.
As shown in FIG. 2, the sequin device 5 installed at a lower end portion of the base block 3 includes a support block 6 installed at the lower portion of the base block 3 using a coupling unit, a support plate 7 horizontally installed at the lower end portion of the support block 6 in order to place a sequin thereon, and a bracket 8 attached to one side portion of the support block 6 using a bonding unit.
The support plate 7 is fabricated in the form of a rectangular plate and is formed at the center thereof with an elongated slot (not shown) having a predetermined width.
The bracket 8 is fabricated in the form of a rectangular plate having a bending part such as an inclined surface formed at one side portion of the support block 6. A sequin press leaf spring 10 and a guide part 11 are installed on front and rear lower end portions of the bracket 8 by using coupling units, respectively.
In addition, a sequin feeding mechanism, which actually transfers and feeds sequins drawn from the sequin roll, is installed on an inner portion of the support block 6, in which the sequin feeding mechanism mainly includes a driving motor 12 installed at the rear lateral portion of the support block 6 so as to provide a driving force for operating the sequin feeding mechanism, an actuating arm 13, an upper end portion of which is fixedly coupled to a driving shaft of the driving motor 12 such that it can be rotated in the forward or backward direction corresponding to the rotation degree of the driving shaft, a transfer lever 16, which is rotatably coupled to the lower end portion of the actuating arm 13 by means of a hinge 14 such that the transfer lever 16 can rotatably move up and down and is provided at a front end portion thereof with a first hook part 15, which engages with a center hole of a sequin, in order to transfer the sequins in a predetermined pitch unit according to the forward or backward action thereof when the sequins released from the reel are placed on the upper surface of the support plate 7 through the guide part 11, a lock lever 18 provided at a free end portion thereof with a second hook part 17, which can engage with the center hole of the sequin, and a lock lever support block 19, which supports the lock lever 18 in such a manner that the lock lever 18 can move up and down in the vicinity of the transfer lever 16. Herein, when the transfer lever 16 has transferred the sequin in a predetermined pitch unit, the lock lever support block 19 allows the second hook part 17 of the lock lever 18 to engage with the center hole of the sequin aligned next to the sequin having the center hole engaged with the first hook part 15 of the transfer lever 16, thereby preventing the sequin from moving. In addition, when the transfer lever 16 moves back after the transfer operation for the sequin, the lock lever support block 19 allows the first hook part 15 of the transfer lever 16 to engage with the center hole of the sequin and releases the engagement between the second hook part 16 of the lock lever 18 and the center hole of the sequin until the sequin is transferred again.
In addition, a sequin cutter 20, which is used for cutting sequins one by one when the sequins are drawn from the sequin roll through the sequin feeding mechanism, is installed at a front end portion of the support plate 7 such that the sequin cutter 20 may rotatably move up and down.
The sequins released from the reel are introduced into the support plate 7 through the guide part 11 installed at the rear side portion of the bracket 8 by means of a plurality of guide rollers. In addition, the center hole of the sequin is aligned corresponding to a slot hole of the support plate 7 by moving the position of the guide part 11 to left or right.
When the first hook part 15 and the second hook part 17 formed at the front end portion of the transfer lever 16 and the lock lever 18 engage with the center hole of the sequin placed on the support plate 7, the slot hole of the support plate 7 is adapted to receive front end portions.
The driving shaft of the driving motor 12 protrudes out of the center part of the support block 6 in such a manner that the driving shaft can be rotated clockwise or counterclockwise, the upper end portion of the actuating arm 13 is fixed to the front end portion of the driving shaft using a coupling unit, and the transfer lever 16 engaging with the center hole of the sequin is rotatably coupled to the lower end portion of the actuating arm 13 by means of a hinge 14.
In addition, the sequin cutter 20 for cutting one by one the sequins drawn from the sequin roll, which is provided through the sequin feeding mechanism, is mounted on the front end portion of the support plate 7 such that the sequin cutter 20 may rotatably move up and down.
In addition, one end of a fourth torsion spring (not shown) is fixed to the sequin cutter 20 so that the sequin cutter 20 is always maintained in a retracted position because it is upwardly biased by means of the fourth torsion spring. The sequin cutter 20 moves down in corporation with the downward movement of a needle bar so as to perform cutting work for the sequins, and is moved up to the retracted position due to the elastic force of the forth torsion spring when the needle bar is lifted up according to the completion of the cutting work for the sequins.
One end of a first torsion spring (not shown) wound around the driving shaft is fixed to the support block 6, and the other end of the first torsion spring is coupled with the actuating arm 13, so the actuating arm 13 is pressed in the counterclockwise direction due to the elastic force of the first torsion spring.
One end of a second torsion spring (not shown) wound around the hinge part 14 provided at the lower end portion of the actuating arm 13 is fixed to the middle portion of the actuating arm 13, and the other end of the second torsion spring is coupled with the transfer lever 16, so the transfer lever 16 is pressed in the clockwise direction due to the elastic force of the second torsion spring. Accordingly, the first hook part 15 provided at the front end portion of the transfer lever 16 is always biased toward the support plate 7.
In addition, one end of a third torsion spring (not shown) installed in the lock lever support block 19 mounted on an inner lower portion of the support block 6 is coupled with the lock lever support block 19, and the other end of the third torsion spring is coupled with the lock lever 18, so the lock lever 18 is biased clockwise due to the elastic force of the third torsion spring. Accordingly, the second hook part 17 provided at the front end portion of the lock lever 18 is always biased toward the support plate 7.
According to the conventional sequin device disclosed in the Japanese Unexamined Patent Publication having the above structure, an elongated hole (H) must be formed in the center portion of the transfer lever so as to receive the second hook part. However, it is very difficult to precisely form the elongated hole in the center portion of the transfer lever when the transfer lever is manufactured. For this reason, the number of manufacturing processes increases, so manufacturing costs for the sequin device also increase.
In addition, when the transfer lever is retracted in order to transfer the next sequin in the process of sequin sewing work, the lock lever is rotatably moved upward in corporation with the transfer lever. At this time, the sequin may interfere with the second hook part of the lock lever, which is being rotatably moved upward, so that the sequin may be slightly dragged backward, so it is necessary to frequently adjust or change the mechanical setting values in order to feed the sequins onto an accurate position, which may cause inconvenience to workers.
In addition, the second hook part of the lock lever may be worn out when the sequin device has been used for a long time, so it is difficult to firmly support the sequin hole when the sequins are cut by the sequin cutter. In this case, the sequin is excessively moved toward the sequin cutter because a needle pulls the sequin, so the sequin may be abnormally cut. In addition, when the error occurs in the sequin device, it is difficult to easily repair the sequin device due to its complex structure, so the productivity of the sequin device may be lowered.
In order to solve the above problems, applicant of the present invention has filed a patent application disclosing the sequin device 5 having the structure shown in FIG. 3 with Korean Intellectual Property Office, which is now registered as Korean Utility Model Registration No. 373160. The utility model discloses a sequin sewing device 1 including a base block 3, which is installed on a side portion of a head 2 of the sewing device using bonding units and a plurality of link structures, a reel holder 4, which is rotatably installed at an upper end portion of the base block 3 so as to fix a reel, around which a sequin roll is wound, and a sequin device 5, which is installed at the lower end portion of the base block 3 so as to feed sequins released from the reel in a predetermined pitch unit. The sequin device 5 includes a driving motor 12, which provides a driving force used for operating the sequin device 5, an actuating arm 13, which is coupled with a driving shaft of the driving motor 12 so as to rotate in a forward direction or a backward direction, a transfer lever 16, which is rotatably coupled to the lower end portion of the actuating arm 13 by means of a hinge 14, and is provided at a front end portion thereof with a first hook part 15, which engages with a center hole of a sequin making the sequin roll, in order to transfer the sequins in a predetermined pitch unit according to the forward or backward action thereof when the sequins released from the reel are placed on the upper surface of the support plate 7, a lock lever 18 provided at a free end portion thereof with a second hook part 17, which can engage with the center hole of the sequin making the sequin roll, a lock lever support block 19, which supports the lock lever 18 in such a manner that the lock lever 18 can move up and down, is provided with the second hook part 17 of the lock lever 18, which engages with a center hole of a sequin next to the sequin having the center hole engaging with the first hook part 15 of the transfer lever 16, and securely locks the sequins when the transfer operation of the sequins is completed by the transfer lever 16, and engages the first hook part 15 of the transfer lever 16 with the center hole of a sequin when the transfer lever 16 moves back after the completion of a transfer operation of the sequins and releases the engagement of the second hook part 16 of the lock lever 18 and the center hole of the sequin until the movement of the sequins resumes, and a sequin cutter 20, which is mounted on the front end portion of the support plate 7 such that the sequin cutter 20 can rotatably move up and down and is used for cutting the moved sequins. According to the utility model, differently from the Japanese unexamined patent, since it is unnecessary to form an elongated hole, into which the second hook part 17 of the lock lever 18 is inserted, at the center part of the transport lever 16, a manufacturing process is simplified, manufacturing costs are lowered, and it is easy to re-mount the sequin roll, so a user can conveniently perform a sequin embroidery work.
However, the sequin device disclosed in the Korean Utility Model having the above-described structure must exactly match the first hook part of the transfer lever and the second hook part of the lock lever with center holes of the sequins when a worker sets an initial working environment for sequin sewing work in order to transfer the sequins. However, it is difficult for a novice to precisely set such an initial working environment.
Accordingly, there are many demands for a sequin sewing device including a sequin device having an improved structure capable of solving problems existing in the conventional sequin device.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a sequin device having a structure requiring no additional device for fixing sequins, thereby simplifying the structure and a manufacturing process of the sequin device and reducing the number of required parts, so that it is possible to reduce manufacturing costs.
Another object of the present invention is to provide a sequin device having a simple structure allowing a worker to easily set an initial working environment when sequin sewing work is performed.
Still another object of the present invention is to provide a sequin device having a structure, which allows a worker to easily install and adjust the sequin device within a short period of time, thereby improving the workability and repair and maintenance work for the sequin device.
To accomplish the above object, according to one aspect of the present invention, there is provided a sequin device of a sequin sewing device, which is installed at a side portion of a head of a sewing machine in order to release sequins from a sequin roll and perform a cutting operation for the sequins, the sequin device including a driving motor for providing a driving force used for operating the sequin device, an actuating arm coupled with a driving shaft of the driving motor so as to rotatably move in a counterclockwise direction or a clockwise direction, a transfer lever rotatably installed at a lower end portion of the actuating arm and provided at a front end portion of the transfer lever with a first hook part, which engages with a center hole of the sequin, in order to transfer the sequins in a predetermined pitch unit according to forward or backward action of the transfer lever, and a transfer lever support bar for securely fixing the sequins by downwardly biasing the transfer lever which transfers the sequins in a predetermined pitch unit.
The transfer lever support bar is mounted on a predetermined position of a support block such that the transfer lever support bar is movable in the forward and backward direction, and is provided with a pressing part which biases the transfer lever downwardly.
The pressing part of the transfer lever support bar securely fixes the sequins by downwardly biasing the hook part of the transfer lever.
The transfer lever has a smoothly-curved protrusion part making contact with a pressing part of the transfer lever support bar.
The pressing part of the transfer lever support bar is provided at one side thereof with a stopper.
The sequin device further comprises a pressing roller capable of performing rolling movement, wherein the pressing roller is provided on the stopper formed at one side of the pressing part of the transfer lever support bar.
The pressing part of the transfer lever support bar is equipped with a pressing roller capable of performing roller movement.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view illustrating the conventional sequin sewing device attached to a head part of a sewing device;
FIG. 2 is a partially enlarged perspective view illustrating the detailed structure of a sequin device in a conventional sequin sewing device shown in FIG. 1;
FIG. 3 is a partially enlarged perspective view illustrating the detailed structure of a sequin device of a conventional sequin sewing device constructed in order to solve a problem derived from the structure shown in FIG. 2;
FIG. 4 is a perspective view illustrating a sequin sewing device according to an embodiment of the present invention;
FIG. 5 is a perspective view illustrating a sequin sewing device shown in FIG. 4 attached to a head part of a sewing device;
FIG. 6 is a partially enlarged perspective view illustrating the detailed structure of a sequin device according to an embodiment of the present invention;
FIGS. 7 a and 7 b are views illustrating the operational states of a sequin device according to an embodiment of the present invention; and
FIGS. 8 a and 8 b are views illustrating a detailed structure of a sequin device according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 4 is a view illustrating a sequin sewing device according to an embodiment of the present invention, FIG. 5 is a view illustrating the sequin sewing device (shown in FIG. 4) attached to a head part of a sewing device, and FIG. 6 is a partially enlarged perspective view illustrating the detailed structure of the sequin device according to an embodiment of the present invention.
As shown in FIGS. 5 to 6, a sequin sewing device 100 includes a base block 300, which is mounted on a side portion of a head of a sewing device using bonding units and a plurality of link structures, a reel holder 200, rotatably installed at an upper portion of the base block 300 so as to fix a reel, around which a sequin roll is wound, and the sequin device 400, which is installed at the lower portion of the base block 300 so as to feed sequins released from the reel in a predetermined pitch unit using a plurality of mechanical devices.
The sequin sewing device 100 is installed using a plurality of link structures and cylinders in such a manner that the sequin sewing device 10 can reciprocate up and down with respect to the head of the sewing device. The sequin sewing device 100 is lifted such that typical embroidery work is not interrupted when sequin sewing work is not performed, or is pulled down when the sequin sewing work is performed.
As shown in FIG. 5, the sequin device 400 installed at a lower end portion of the base block 300 includes a support block 420, which is installed at the lower end portion of the base block 300 using a coupling unit, a support plate 430 horizontally formed in order to place a sequin roll on the lower end portion of the support block 420, and a bracket 440 installed at one side portion of the support block 420 using a bonding unit.
The support plate 430 is fabricated in the form of the shape of a rectangular plate and is formed at the center thereof with an elongated slot (not shown) having a predetermined width.
The bracket 440 is fabricated in the form of a rectangular plate having a bending part such as an inclined surface formed at one side portion of the support block 420. A sequin press leaf spring 444 and a guide part 442 are installed on front and rear lower end portions of the bracket 440 by using coupling units, respectively.
In addition, a sequin feeding mechanism for actually transferring and feeding sequins is formed at an inner portion of the support block 420, and the sequin feeding mechanism includes a driving motor 410 mounted on a rear side portion of the support block 420 and providing a driving force used for operating the sequin feeding mechanism, an actuating arm 450 having the upper end portion fixedly coupled with a driving shaft 412 of the driving motor 410 so as to rotatably move by the rotation degree of the driving shaft 412 in a counterclockwise direction or a clockwise direction, a transfer lever 460 installed at the lower end portion of the actuating arm 450 such that it can rotate using a hinge shaft 470 in an upward direction or in a downward direction, and is provided with a hook part 462, which engages with a center hole of a sequin, positioned at the front end portion of the transfer lever 16 in order to transfer sequins, which are extracted from the reel and placed on the upper side of the support plate 430 through the guide part 442, in a predetermined pitch unit through a forward operation or a backward operation, and a transfer lever support bar 490 securely fixing the sequin by biasing the transfer lever 460 downwardly with the completion of the transport operation of the sequin by the transfer lever 460.
In addition, a sequin cutter 480, which is used for cutting sequins, which are provided through the sequin feeding mechanism, one by one, is installed at a front end portion of the support plate 430 such that the sequin cutter 480 may rotatably move up and down.
Furthermore, the sequin cutter 480 has an elastic member (not shown) wound around the sequin cutter 480, so the sequin cutter 480 is always maintained in a retracted position because it is upwardly biased by means of the elastic member. The sequin cutter 480 moves down in corporation with the downward movement of a needle bar 700 so as to perform cutting work for the sequins, and is moved up to the retracted position due to the elastic force of the elastic member when the needle bar is lifted up according to the completion of the cutting work for the sequins.
The sequins released from the reel are introduced into the support plate 430 through the guide part 442 installed at the rear side portion of the bracket 440 using a plurality of guide rollers 310 and 320. In this case, the center hole of the sequin is aligned corresponding to a slot hole of the support plate 430 by moving the position of the guide part 442 to left or right.
The guide part 442 installed on the rear portion of the bracket 440 is not used for placing the sequin roll on a predetermined position of the support plate 430 but used for accurately positioning at the center hole of the sequin corresponding to the slot hole of the support plate 430.
The slot hole of the support plate 430 is used for allowing the front end portion of the transfer lever 460 to be inserted into the slot hole such that a hook part 462 provided at the front end portion of the transfer lever 460 can engage with the center hole of the sequin placed on the support plate 430.
A driving shaft 412 of a driving motor 410 providing a driving force for the sequin feeding mechanism protrudes out of the center part of the support block 420, an upper end portion of the actuating arm 450 is fixed to the front end portion of the driving shaft 412 using a coupling unit, and the transfer lever 460 engaged with the center hole of a sequin is rotatably connected to a lower end portion of the actuating arm 450 by means of a hinge shaft 470.
In addition, an elongated slot hole 422 having a predetermined length is formed at the inner lower portion of the support block 420. A transfer lever support bar 490, which is provided with a pressing part 492 protruding downward from a lower end of the transfer lever support bar 490 so as to securely fix a sequin roll by downwardly biasing the transfer lever 460 after the transfer lever 460 has transferred the sequin roll in a predetermined pitch unit, is installed in the slot hole 422 using a coupling unit in such a manner that the position of the transfer lever support bar 490 can be adjusted in the forward or backward direction. Although the present invention does not limit the shape of the transfer lever support bar 490, the transfer lever support bar 490 preferably has a reverse-L shape as shown in FIGS. 5 to 8 b.
If necessary, the pressing part 492 of the transfer lever support bar 490 may be equipped with a pressing roller performing the rolling movement in order to minimize friction between the transfer lever 460 and the pressing part 492.
In addition, an elastic member (not shown) is wound around the driving shaft 412 of the driving motor 410, so one end of the elastic member is fixed on the support block 420, and the other end of the elastic member is locked with the actuating arm 450, thereby biasing the actuating arm 450 counterclockwise.
Furthermore, an elastic member (not shown) is wound around the hinge shaft 470 provided at the lower end portion of the actuating arm 450. One end of the elastic member is fixed to a middle part of the actuating arm 450 and the other end of the elastic member is coupled with the transfer lever 460, so the transfer lever 460 is biased clockwise due to an elastic force of the elastic member. Accordingly, the hook part 462 provided at the front end portion of the transfer lever 460 is always biased toward the support plate 430.
Hereinafter, the operation of the sequin device according to the present invention having the above-described structure will be described in detail. First, a worker draws the sequin roll wound around the reel. The first sequin of the sequin roll drawn from the reel is placed on the support plate 430 through a plurality of guide rollers 310 and 320 and the guide part 442 and then moves back the hook part 462 of the transfer lever 460 by handling a driving shaft control handle 414 provided at the rear side of the driving motor 410 such that the hook part 462 may engage with the center hole of the first sequin. After the hook part 462 has engaged with the center hole of the first sequin, the sequin roll is moved by rotating the driving shaft control handle 414 such that the foremost sequin of the sequin roll makes contact with the front end portion of the support plate 430.
When the sequin roll has transferred in a predetermined pitch unit through the transfer operation of the transfer lever 460, the sequin roll must be securely fixed using the transfer lever support bar 490 mounted on a predetermined position of the support block 420. This operation will be described below in detail with reference to FIGS. 7 a and 7 b. If the hook part 462 of the transfer lever 460 moves forward in order to transfer the sequin roll in a state in which the hook part 462 of the transfer lever 460 is engaged with the sequin hole, a smoothly-curved protrusion part 464 of the transfer lever 460 makes contact with the pressing part 492 of the transfer lever support bar 490 when the sequin roll has been transferred in a predetermined pitch unit. At this time, the pressing part 492 of the transfer lever support bar 490 downwardly biases the protrusion part 464 of the transfer lever 460, so the hook part 462 of the transfer lever 460 can securely support the sequin roll.
Thereafter, when the transfer lever 460 moves backward in order to transfer the next sequin, the engagement between the hook part 462 and the center hole of the sequin is released. At this time, the protrusion part 464 of the transfer lever 460 is separated from the pressing part 492 of the transfer lever support bar 490, thereby releasing the sequin roll.
When the sequin roll has been transferred to the front end portion of the support plate 430 through the above procedure, the head 600 of the sewing device is operated so that the needle bar 700 moves down. Thus, the sequin cutter 480 moves down in corporation with the needle bar 700, thereby cutting the sequin. The sequin cut by the sequin cutter 480 is applied to an object to be sewn.
In contrast, if the needle bar 700 is lifted up, the sequin cutter 480 is upwardly retracted due to an elastic force of an elastic member, and the transfer lever 460 moves back in order to transfer a new sequin.
Hereinafter, a sequin device according to another embodiment of the present invention will be described with reference FIGS. 8 a and 8 b. According to another embodiment of the present invention, the hook part 462 of the transfer lever 460 can directly make contact with the pressing part 492 of the transfer lever support bar 490 after the transfer lever 470 has transferred the sequin roll in a predetermined pitch unit, in such a manner that the transfer lever 460 is downwardly biased to fix the sequin roll. Otherwise, a stopper 494, which is fabricated in the form of a cylindrical rod, protrudes from a predetermined position of the pressing part 492 of the transfer lever support bar 490, and makes contact with the hook part 462 of the transfer lever 460, thereby downwardly biasing the transfer lever 460.
If necessary, the stopper 494 of the transfer lever support bar 490 may be equipped with a pressing roller performing the rolling movement in order to minimize friction between the transfer lever 460 and the pressing part 492.
As described above, according to the present invention having the above structure, since the sequin roll is transferred in a predetermined pitch unit according to transfer operation of the transfer lever in the forward and backward directions, and then the transfer lever fixes the sequin roll by means of the transfer lever support bar, it is unnecessary to employ an additional device used for fixing the sequin roll. In addition, since a rotation degree of the actuating arm can be adjusted by a worker by simply adjusting backward and forward positions of the transfer lever support bar, it is unnecessary to employ the conventional stopper for the actuating arm and the conventional contact-point adjustment screw for adjusting the degree of rotation of the actuating arm. Accordingly, the structure of the sequin device can be simplified, thereby simplifying the manufacturing process of the sequin device. In addition, since the number of parts used for manufacturing the sequin device can be reduced, it is possible to remarkably reduce manufacturing costs for the sequin device.
In addition, since the sequin device according to the present invention employs only one transfer lever so as to feed the sequins, it is easy to set the working environment of the sequin device, so even a novice can perform sequin sewing work. In addition, since a time required for the setting up and the control of the sequin device can be reduced, it is possible to remarkably improve the productivity of a sequin sewing work. Furthermore, it is easy to perform the maintenance of the sequin device when an error occurs in the sequin device, so it is possible to previously prevent the degradation of the productivity of the sequin device due to the error of the sequin device.
Although a preferred embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A sequin device of a sequin sewing device, which is installed at a side portion of a head of a sewing machine in order to release sequins from a sequin roll and perform a cutting operation for the sequins, the sequin device comprising:

a driving motor for providing a driving force used for operating the sequin device;

an actuating arm coupled with a driving shaft of the driving motor so as to rotatably move in a counterclockwise direction or a clockwise direction;

a transfer lever rotatably installed at a lower end portion of the actuating arm and provided at a front end portion of the transfer lever with a first hook part, which engages with a center hole of the sequin, in order to transfer the sequins in a predetermined pitch unit according to forward or backward action of the transfer lever; and

a transfer lever support bar for securely fixing the sequins by downwardly biasing the transfer lever which transfers the sequins in a predetermined pitch unit.

2. The sequin device as claimed in claim 1, wherein the transfer lever support bar is mounted on a predetermined position of a support block such that the transfer lever support bar is movable in the forward and backward direction, and is provided with a pressing part which biases the transfer lever downwardly.

3. The sequin device as claimed in claim 2, wherein the pressing part of the transfer lever support bar securely fixes the sequins by downwardly biasing the hook part of the transfer lever.

4. The sequin device as claimed in claim 1, wherein the transfer lever has a smoothly-curved protrusion part making contact with a pressing part of the transfer lever support bar.

5. The sequin device as claimed in any one of claims 1 to 4, wherein the pressing part of the transfer lever support bar is provided at one side thereof with a stopper.

6. The sequin device as claimed in claim 5, further comprising a pressing roller capable of performing rolling movement, wherein the pressing roller is provided on the stopper formed at one side of the pressing part of the transfer lever support bar.

7. The sequin device as claimed in one of claims 1 to 4, wherein the pressing part of the transfer lever support bar is equipped with a pressing roller capable of performing roller movement.