KR20040099025A - Thread feeding apparatus for an automatic embroidering machine - Google Patents

Abstract

PURPOSE: An upper yarn supplying device for an automatic embroidering machine is characterized by having simple structure and reducing working hours. CONSTITUTION: An upper yarn supplying device for an automatic embroidering machine comprises: a head stem(7) installed in a needle operating part(90); a yarn supplying part(10) containing a yarn guiding path(11) supplying one selected from upper yarns(3) having different colors; a guide pipe assembly(50) which is set on condition that the same is separated from the yarn guiding path(11) according to an axial direction of the yarn guiding path(11), containing a guide pipe(51) taking the upper yarn from the yarn guiding path(11) and guiding the upper yarn to the needle operating part(90); and a yarn tension controlling part(60) containing a movable part passed through an intervals between the yarn guiding path(11) and the guide pipe(51) and contacted with the upper yarn and a driving part driving the movable part in a horizontal direction of an upper yarn supplying direction. The movable part detours a supplying path of the upper yarn, so tension of the upper yarn is controlled.

Description

Upper thread feeder for automatic embroidery machine {THREAD FEEDING APPARATUS FOR AN AUTOMATIC EMBROIDERING MACHINE}

The present invention relates to an upper thread supply apparatus for an automatic machine, and more particularly, to an upper thread supply apparatus for an automatic machine, in which the upper thread supply structure is improved.

An automatic embroidery machine is a kind of automatic sewing machine which automatically embroiders a predetermined pattern and trademark by using a thread of various colors and is automatically embroidered by a program pre-woven on a label of clothing or shoes.

In general, the automatic embroidery machine includes a head stem provided in front of the fixed frame, a upper thread feeder which is attached to the head stem and supplies upper threads of different colors from a plurality of failures in a direction in which embroidery work is performed, and the upper threads supplied in this way. It includes a needle working portion for sewing embroidery work.

In addition, the automatic machine is classified into a single needle and a multi needle according to the number of needles mounted on the upper thread feeder and the needle working part.

The single needle embroidery machine has an upper thread feeder for selectively feeding one of several different colors of upper thread from a plurality of failures to the needle work, and one needle for sewing the upper thread to be embroidered. It includes a needle working part.

The multi-needle embroidery machine has a needle feeder for feeding needle threads of various different colors from a plurality of failures, and a needle having a plurality of needles so that one of the plurality of needle threads is sewn and one of them is embroidered. Includes a working part.

In the following description, an automatic embroidery machine for a single needle will be described.

The invention of the conventional single needle automatic machine is disclosed in "Upper thread feeding device for automatic machine" in Korean Patent Laid-Open No. 2002-0068028.

Such a conventional embroidery machine upper thread supply device, the head stem having a needle working portion; A yarn supply unit for supplying any one selected from a plurality of yarns having different colors; The first guide tube receiving the thread from the thread supply portion, and the upper end is provided in the head stem and the lower end is a predetermined distance interval along the axial direction with respect to the first guide tube, the lower end is adjacent to the needle working part A guide tube assembly having a second guide tube; The rocking lever oscillating in a plane parallel to the supply path of the seal and the free end portion of the rocking lever are transversely coupled to the rocking direction of the rocking lever through the spacing according to the rocking motion of the rocking lever. Including a thread take-up member having a thread-hanging member that reciprocates and relaxes the thread, it is possible to eliminate the curved path to the supply path of the yarn while unifying the headstem to smoothly supply the yarn.

In addition, the upper thread supply apparatus of the conventional automatic embroidery machine further includes a mounting tension holding unit which is provided on the upper side of the head stem to adjust the supply tension of each upper thread extending from a plurality of failures.

However, the mounting force holding part of the upper thread supply device for the conventional automatic embroidery machine is provided to adjust the supply tension of all of the plurality of upper threads extending from failure, and the configuration is not only complicated, but also the user combines each upper thread with the mounting force holding unit one by one. There is a problem that the work time increases because it should be.

Accordingly, it is an object of the present invention to provide an upper thread feeder for an automatic embroidery machine which is simple in structure and can shorten working time.

1 is a perspective view showing an upper thread supply apparatus for an automatic machine according to the present invention;

2 is an enlarged perspective view of the seal supply unit of FIG. 1;

3 is an enlarged perspective view of the mounting force adjusting part of FIG. 1;

4 is an enlarged perspective view of the guide tube assembly of FIG.

5 and 7 is a perspective view of the operation of the upper thread supply apparatus for an automatic machine according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: upper thread supply device 3: upper thread

7: Headstem 9: Failure

10: thread supply unit 11: thread guide

20: actual capacity control unit 21: seal holding unit

22: actual distribution port 24: actual air volume control bar

25: thread tension bar 26: seal holder

27a, 27b: actual air holding bar 28: actual holding holder

30: actual supply block 31: actual institution

35: air supply 40: connector

43: auxiliary air spray pipe 45: support pipe

50: guide tube assembly 51: guide tube

52: operation guide 53: 1st inner house

54: first connection bracket 55: the second intermediate inner tube

56: second connection bracket 58: fixed bracket

59: support bracket 60: mounting force adjusting unit

61: movable body 63: real contact

65: elastic member 67: connecting member

68: locking portion 69: rotating shaft

71: support 72: hook receiving portion

75: thread feed member 76: real part

78: real bracket 80: transfer means

81: pulley 83: belt

90: needle work part 91: needle

92: needle support 100: thread take-up

101: thread hanger 103: rotation arm

105: arm support bracket 106: link assembly

110: thread machine 113: loop transfer bar

115: loop 117: loop transfer unit

The object is, according to the present invention, the upper thread supply apparatus for an automatic machine, a head stem equipped with a needle work unit; A thread supply unit having a thread guide path for supplying any one selected from a plurality of upper threads having different colors; A guide tube assembly provided on the head stem and having a guide tube spaced along an axial direction of the thread guide path to receive the upper thread from the thread guide path and guide the needle thread to the needle work part; Movable interval between the thread guide path and the guide tube in the transverse direction of the upper thread supply direction to contact the upper thread, and the movable body in contact with the upper thread to bypass the supply path of the upper thread to adjust the tension of the upper thread It is achieved by the upper thread supply device for an automatic machine, characterized in that it comprises a mounting force adjusting unit having a drive unit for moving the movable body in the transverse direction of the supply direction of the upper thread.

Here, the mounting force adjusting unit may further include a thread transfer member for transferring the upper thread in the direction of the movable body so as to increase the contact length of the upper thread in contact with the movable body.

The mounting force adjusting unit may further include a connecting member having one side rotatably coupled to the movable body and the other side coupled to the driving unit, and the driving unit including an elastic member for rotating the connecting member with a predetermined elastic force. .

The movable body is provided with a circular cross section, and the outer circumferential surface thereof is preferably provided with a seal contact portion formed to receive and contact the upper thread.

The mounting force adjusting unit is integrally coupled to the connecting member, and further includes a rotating shaft rotatably coupled to the head stem, and the rotating shaft is coupled to the elastic member and rotated by the elastic member. Do.

The guide tube assembly further has a movable guide tube movably provided between the thread guide path and the guide tube, and further includes a transfer means for transferring the movable guide tube so that the thread guide path and the guide tube are connected and spaced apart from each other. It is desirable to.

The conveying means includes a pair of pulleys spaced apart along the longitudinal direction of the movable guide tube; A belt coupled to the pair of pulleys and coupled to the movable guide tube to transfer the movable guide tube; It is preferable to include a drive motor for driving the pulley.

The mounting force adjusting unit may further include a locking unit extending to the other side of the connection member, and the locking unit may be limited in rotation by a support provided to be movable in combination with one side of the belt.

The thread transfer member is preferably provided to be movable in combination with the other side of the belt.

Preferably, the movable guide tube includes a first intermediate inner tube and a second intermediate inner tube which are coupled to one side and the other side of the belt and move to face each other.

It is preferable that any one of the first and second inner tubes is receptably coupled to the other.

Preferably, the movable body passes a spaced interval between the thread guide path and the first intermediate inner tube.

It is preferable to further include a thread take-up which takes the upper thread located in the spaced space between the first intermediary inner tube and the guide tube.

The thread take-up unit, and the thread hook portion penetrates to receive the second inner tube; A rotating arm having one side integrally coupled to the thread-hanging portion and the other side rotatably coupled to the head stem; One side is coupled to the rotating arm, the other side is preferably coupled to the belt including a link assembly for rotating the rotating arm by the movement of the belt.

Hereinafter, with reference to the accompanying drawings as an embodiment of the automatic needle machine for a single needle will be described in detail.

As shown in Figures 1 to 4, the upper thread supply device 1 for an automatic machine according to the present invention, the fixed frame 5, the head stem 7 coupled to the front of the fixed frame 5, The thread supply part 10 is provided between the thread supply part 10 provided on the front of the head stem 7, the needle work part 90 provided below the head stem 7, and the thread supply part 10 and the needle work part 90. Guide tube assembly 50 for guiding the upper thread (3) supplied from the (10) to the area adjacent to the needle work portion 90, and the upper thread located in the separation interval between the thread supply portion 10 and the guide tube assembly (50) (3) includes a mounting tension adjusting unit 60 for adjusting the supply tension of the upper thread (3).

In addition, the upper thread supply device 1 for an automatic embroidery machine according to the present invention is a thread sewing device for binding the upper thread 3 guided by the guide tube assembly 50 to the needle 91 provided in the needle work unit 90 ( 110 and a thread take-up device 100 which tensions and relaxes the upper thread 3 by taking part of the upper thread 3 passing through the guide tube assembly 50.

The fixed frame 5 is mounted on a horizontal surface such as the ground, or is coupled to a wall or other mechanical device to serve to support the head stem 7 and the like.

The head stem (7) is coupled to the back of the fixed frame (5), the front of the thread supply unit 10, the guide tube assembly 50, the needle work unit 90 and the thread sewing device 110, etc. It is preferable to have a substantially rectangular plate shape, but may be provided in various shapes to support the seal supply unit 10 and the like.

The thread supply unit 10 includes a thread guide path 11 for supplying any one selected from the plurality of upper threads 3 having different colors. In addition, the thread supply unit 10 includes a plurality of connecting pipes 40 for supplying the end portions of the upper threads 3 supplied from the plurality of failures 9 having different colors to the needle work unit 90, and the failures ( It is installed between the 9 and the connecting pipe 40, the actual air volume control unit 20 for adjusting the air volume of the upper thread (3), a plurality of upper threads (between the actual air volume control unit 20 and the connecting pipe 40 ( 3) are respectively connected to the actual supply unit 30 and the actual supply unit 30 of the actual supply unit 30 and the actual supply unit 30 of the actual supply unit 30 is provided to be waiting for each of the actual unit 31 Air supply unit 35 for selectively transferring any one of the plurality of upper thread (3) received in the direction of the connecting pipe 40, and a plurality of connecting pipes 40 and the connection point of the thread guide path (11) The support pipe 45 for supporting the connection pipe 40 and the thread guide path 11 in communication with each other, and the upper thread 3 coupled to the support pipe 45 and transferred through any one of the plurality of connection pipes 40. To thread guide (11) It further comprises a secondary air injection pipe 43 for injecting the air for transferring preferred.

The actual air volume control unit 20 is installed between the failure (9) and the thread supply block 30, the stand of the upper thread (3) waiting for the actual engine 31 of the thread supply block 30 or the connecting pipe (40) Adjust your skills. The actual air volume control unit 20 includes a seal holding unit 21 disposed above the thread supply block 30, and a plurality of actual air volume control bars 24 installed at the rear of the seal holding unit 21. Include.

The seal holding portion 21 is formed with a plurality of seal distributors 22 corresponding to the actual engines of the seal supply block 30, and the center of each thread distributor 22 is formed on the front surface of the seal holding portion 21. A seal holder having a thread tension bar 25 coupled to traverse an area in the left and right direction, and a pair of thread waiting state maintaining bars 27a and 27b which are approached and spaced apart from upper and lower edges of the thread distribution opening 22. (26) is provided. And behind the seal holding part 21, a seal holder driving part (not shown) is provided for approaching and separating the seal holder 26 from the upper and lower edges of the seal distributor 22.

The actual air volume control bar 24 is installed to reciprocate back and forth toward the seal holding portion 21, and the front end portion of each actual air volume control bar 24 partially passes through each actual distribution port 22 when moving forward. The ground holder 28 is coupled. In addition, the actual air volume control bar 24 is connected to the actual air volume control bar driver (not shown) so as to be able to reciprocate back and forth toward the seal holding portion 21.

The thread holding holder 28 is provided in a pair so that the upper and lower portions are positioned at the upper and lower portions of the thread tension bar 25 when the thread distribution port 22 passes, and the upper thread 3 passes through the upper thread 3 at each end portion thereof. The ball 29 is formed.

The connecting pipe 40 is configured to accommodate and hold the upper thread 3 so that the upper thread 3 passing through the thread capacity adjusting bar 24 and the thread supply block 30 is supplied in the direction of the needle work part 90. Has a predetermined length. In one example, the length of each connector 40 is preferably about 100 mm.

It is preferable that the thread supply block 30 is provided in a substantially rectangular block shape, and the plurality of thread organs 31 are preferably formed through the path through which the upper thread 3 is supplied.

The air supply unit 35 is connected to each of the plurality of large organs 31 so as to inject air, and selectively opens and closes to transfer any one of the upper threads 3 that are queued to the plurality of large organs 31. It is preferable to include the opening and closing means.

Preferably, the auxiliary air injection pipe 43 is supported by the support pipe 45 at one end thereof in the same direction as the plurality of connection pipes 40, and the other end thereof is connected to a compression means such as a compressor (not shown). It is preferable that air can be injected in the advancing direction of the upper thread 3. At this time, the auxiliary air injection pipe 43 is more preferably positioned in the center of the plurality of connecting pipe 40 is supported by the support pipe 45.

Thus, the air injected by the air supply unit 35 supplies any one of the plurality of upper thread (3) to the support tube 45 through the connecting pipe 40, the upper thread (3) thus supplied is auxiliary air powder Air is injected to the position adjacent to the needle working portion 90 through the thread guide path 11 and the guide tube assembly 50 by the air injection of the pipe 43.

The guide tube assembly 50 is provided on the head stem 7, and receives the upper thread 3 from the thread guide path 11 of the thread supply part 10 to guide the needle work part 90 to the needle work part 90. And a guide tube 51 spaced apart along the axial direction of 11). In addition, the guide tube assembly 50 may further include a movable guide tube 52 provided to be movable between the thread guide path 11 and the guide tube 51 of the thread supply unit 10.

Guide tube 51 is provided in a long tubular shape to accommodate the upper thread (3), it is preferable to be installed in a position close to the needle work portion 90 is separated from the thread guide path (11). And the guide pipe 51 is integrally supported by the fixing bracket 58 to the head stem (7).

The movable guide pipe 52 is installed along the supply path of the upper thread 3 in the space between the thread guide path 11 and the guide pipe 51. In addition, the movable guide tube 52 is coupled to one side 83a and the other side 83b of the belt 83 of the transfer means 80, which will be described later, respectively. It is preferable that it is the inner pipe | tube 55 two-way.

The first intermediate inner tube 53 is provided between the thread guide path 11 and the second intermediate inner pipe 55, and is preferably provided to be movable along the axial direction of the thread guide path 11. In addition, the second intermediate inner tube 55 is provided between the first intermediate inner tube 53 and the guide tube 51, and is preferably provided to be movable along the supply path of the upper thread 3.

It is preferable that any one of the first intermediate inner tube 53 and the second intermediate inner tube 55 is receptably coupled to the other, and in the embodiment of the present invention, the first intermediate inner tube 53 is movable second. Receivably coupled to the guide tube (55). The first intermediate inner tube 53 and the second intermediate inner tube 55 are movably supported by the support bracket 59.

The upper thread supply apparatus 1 according to the embodiment of the present invention is a conveying means 80 for transporting the movable guide tube 52 so that the thread guide passage 11 and the guide tube 51 of the thread supply part 10 are connected and spaced apart. It is preferable to further include).

The transfer means 80 is coupled to the pair of pulleys 81 and the pair of pulleys 81 provided along the longitudinal direction of the movable guide tube 52 and coupled to the movable guide tube 52 to guide the operation. It includes a belt 83 for conveying the tube 52, and a drive motor (not shown) for driving the pulley 81.

Pulleys 81 are provided in pairs in the vertical direction, which is the longitudinal direction of the movable guide tube 52, on the front surface of the head stem 7 to be spaced a predetermined distance apart.

The belt 83 is mounted on the pair of pulleys 81 and provided to be movable by the rotation of the pulleys 81, and one side 83a of the first inner tube 53 and the first connecting bracket 54 are provided. The other side 83b is coupled by the second movable bracket 55 and the second connecting bracket 56. Accordingly, as the belt 83 moves, the first movable bracket 53 and the second movable bracket 55 are linked together to connect and space the thread guide path 11 and the guide tube 51.

A drive motor (not shown) is preferably mounted on the back of the head stem 7 to drive one of the pair of pulleys 81.

The thread tension adjusting unit 60 contacts the upper thread 3 by passing a spaced interval between the thread guide path 11 and the guide pipe 51 of the thread supply unit 10 in the horizontal direction of the supply direction of the upper thread 3. The movable body 61 and the movable body 61 are in contact with the upper thread 3 to bypass the supply path of the upper thread 3 to adjust the supply tension of the upper thread 3 to the upper thread 3. It includes a drive unit for moving in the horizontal direction of the supply direction of. The mounting force adjusting unit 60 transfers the thread transfer member 75 for transferring the upper thread 3 in the direction of the movable body 61 so as to increase the contact length of the upper thread 3 in contact with the movable body 61. It is preferable to further include. In addition, the mounting force adjusting unit 60 preferably further includes a connecting member 67 having one side rotatably coupled with the movable body 61 and the other side coupled with the driving unit, and integrally with respect to the connecting member 67. It is preferable to further include a rotating shaft 69 is coupled to and rotatably coupled to the head stem (7).

The movable body 61 is provided with a circular cross section, and the outer circumferential surface thereof is preferably provided with a seal contact portion 63 recessed to receive and contact the upper thread 3. And, the central portion of the movable body 61 is rotatably coupled to one side of the connecting member 67. In addition, the movable body 61 passes through the separation interval between the thread guide path 11 of the thread supply unit 10 and the first inner inner tube 53 in the horizontal direction of the supply direction of the upper thread 3, the upper thread 3 Is preferred.

It is preferable that the drive part moves the movable body 61 in the horizontal direction of the supply direction of the upper chamber 3, and can limit the movement of the movable body 61. FIG. In addition, the driving unit may include an elastic member 65 coupled to the other side of the connecting member 67 to rotate the connecting member 67 with a predetermined elastic force. And, as a means for limiting the movement of the movable body 61 is preferably a locking portion 68 and the support 71 to be described later to limit the rotation of the connecting member 67, the movement of the movable body 61 Of course, it is also possible to provide a locking means for preventing the rotation of the connecting member 67 in contact with one region of the connecting member 67 to be limited.

The elastic member 65 is one end is coupled to the pivot shaft 69 rotatably coupled to the connecting member 67, the other end is a coil spring (Coil Spring) coupled to the head stem (7) desirable. In addition, the elastic member 65 adjusts the number of windings of the coil spring and the like to adjust the elastic force for rotating the connecting member 67 to supply the upper thread 3 in contact with the thread contact portion 63 of the movable body 61. Can be adjusted.

Accordingly, the connecting member 67 is rotatable by the elastic member 65 as the driving unit, and the movable member 61 is connected between the thread guide path 11 and the guide tube 51 by the rotation of the connecting member 67. The spacing of the can pass in the transverse direction of the supply direction of the upper thread (3).

The connecting member 67 has a long rod shape, one side of which is rotatably coupled to the movable body 61, and the other side thereof is preferably integrally coupled to the rotation shaft 69. The other end of the connecting member 67 is provided with a locking portion 68 extending at a predetermined angle.

The locking portion 68 is limited to the rotation of the support member 71 coupled to the transfer means 80 to be movable to limit the rotation of the connecting member (67).

The support 71 is integrally movably coupled to one side 83a of the belt 83 of the conveying means 80 in an elongated rod shape, and an upper end thereof contacts the locking portion 68 so that the locking portion 68 Limit the rotation. In addition, the support 71 is preferably coupled to one side 83a of the belt 83 by the second connecting bracket 56. In addition, the support 71 is preferably provided with a hook receiving portion 72 to accommodate the locking portion 68 in the upper contact with the locking portion 68, the head stem by a plurality of support brackets (59) It is preferable to be movably supported with respect to (7). Accordingly, the movement of the movable body 61 can be restricted by limiting the rotation of the connecting member 67 by the locking portion 68 and the support 71.

The thread transfer member 75 includes a real part 76 for accommodating the upper thread 3 so as to increase the contact length of the upper thread 3 in contact with the movable body 61, and the real part 76 to be movable. It includes a real bracket (78) extending from the molten portion 76 and coupled to the other side (83b) of the belt (83).

The real part 76 moves the lower region of the upper thread 3 in contact with the thread contacting portion 63 of the movable body 61 upward while the movable body 61 moves and contacts the upper thread 3. The contact length of the upper thread 3 which contacts the seal contact part 63 of the movable body 61 is increased.

The thread take-up 100 tensions and relaxes the upper thread 3 by filling the upper thread 3 located in the spaced space between the second inner inner tube 55 and the guide tube 51. And, the thread take-up 100 is a thread hook portion 101 that is receivably penetrating the second inner tube 55, one side is integrally coupled to the thread hook portion 101 and the other side head stem (7) Rotating arm 103 rotatably coupled with respect to, and one side is coupled to the rotation arm 103 and the other side is coupled to the belt 83 to rotate the rotation arm 103 by the movement of the belt 83. And link assembly 106. In addition, the thread take-up 100 preferably further includes an arm support bracket 105 for rotatably supporting the pivoting arm 103 to the head stem 7.

The link assembly 106 has one side coupled to the arm support bracket 105 together with the rotation arm 103 to rotate the rotation arm 103 and the other side coupled to the second link member 106b. ) And a second link member 106b rotatably coupled to the first link member 106a and coupled to the other side 83b of the belt 83. Accordingly, the second link member 106b moves integrally with the belt 83 to rotate the first link member 106a, and the pivot arm 103 rotates by the rotation of the first link member 106a. do.

The arm support bracket 105 has the upper thread 3 corresponding to the embroidery work of the needle work unit 90 while the thread hanger 101 is rotated while holding the upper thread 3 by the rotation of the pivoting arm 103. It is preferable that an arm driving unit (not shown) for driving the pivoting arm 103 is provided to relax and relax the arm. The arm drive unit (not shown) is preferably composed of a motor, a cam device, or the like.

The needle work part 90 is provided at the lower end of the head stem 7 so as to be reciprocated vertically, the needle 71 for performing embroidery work, the needle support 92 for supporting the needle 71, and the needle 71. And a presser foot (not shown) for pressing the embroidery fabric along the advancing direction of the needle 71 and the needle driver (not shown) for vertically reciprocating the needle 71 during the embroidery operation. Here, the needle driver (not shown) may use a motor, a cam device, or the like, and may use a hydraulic cylinder, a pneumatic cylinder, a solenoid, or the like.

The thread sewing device 110 moves forward toward the needle hole formed in the needle 71 by the loop feed part 117 provided at the lower part of the head stem 7 adjacent to the needle work part 90 and the loop feed part 117. The retracted loop transfer bar 113 and the loop 115 of an elastic body having a substantially rhombus shape and coupled to the distal end of the loop transfer bar 113 are included.

The loop 115 is positioned close to the lower end of the guide tube 51 by elastically passing through the hole of the needle 71 when the loop transfer bar 113 is advanced, and is transferred through the guide tube 51. The end region of the upper thread 3 is received. And, when the loop transfer bar 113 retreats, the loop 115 elastically exits the hole of the needle 71 to bind the end region of the upper thread 3 to the needle hole. Here, the loop transfer unit 117 may use a hydraulic cylinder, a pneumatic cylinder or a solenoid.

The upper thread supply apparatus 1 for an automatic embroidery machine according to an embodiment of the present invention has a control object such as a driving motor (not shown) for supplying the upper thread 3 from the plurality of failures 9 to the needle work unit 90. It is preferable to further include a control unit (not shown) for controlling the things.

The controller (not shown) controls the actual air volume control bar driving unit (not shown), a compression means (not shown) and a driving motor (not shown) for supplying compressed air. The controller (not shown) controls the operation of the needle driver (not shown) and the arm driver (not shown) of the thread take-up 60 and the loop feeder 117.

By this configuration, looking at the operation of the upper thread supply device (1) for the automatic machine according to the present invention.

First, the actual air volume control bar 24 is moved forward so that the front end of the plurality of thread distribution ports 22 and thread tension bars 25 in which the front end portions of the actual grip holders 28 are formed in the seal holding portion 21. To protrude. Thereafter, the ends of the upper thread 3 of various colors from the plurality of failures 9 are passed between the upper thread waiting state holding bar 27a and the seal holding part 21, and the through holes 29 of the respective grip holders 28 are formed. Pass). At this time, the upper thread 3 of the region between the through hole 29 of the actual grip holder 28 is located in front of the thread tension bar 25, and the seal holder 26 is advanced forward.

Then, an end of each upper thread 3 that has passed through the thread passing hole 29 of each thread holder 28 is passed between the lower thread waiting state holding bar 27b and the thread holding part 21, and the thread supply block ( Each of them is housed in a plurality of actual engines 31 provided in 30). And, the actual air volume control bar 24 is retracted to the rear, at this time, the upper actual air holding state bar (27a) of the seal holder 26, the thread holding portion 21 and the predetermined so that the upper thread (3) is pulled backward To maintain the spacing. Further, the lower thread waiting state holding bar 27b is in contact with the thread holding part 21 while pressing the upper thread 3 so that the upper thread 3 is not pulled backward. Thereby, the edge part of each upper thread 3 will hold | maintain the state waiting by the said large engine organ 31 (refer FIG. 2).

In addition, the first intermediate inner tube 53 and the second intermediate inner tube 55 connect the thread guide passage 11 and the guide tube 51 of the thread supply unit 10 to supply the upper thread 3. Preparatory work is completed (see FIG. 5).

Then, by turning on the power of the automatic embroidery machine and supplying air to the air supply unit 35 and the auxiliary air injection pipe 43, selectively one of the plurality of upper threads (3) and the thread guide path (11) The first and second intermittent inner tubes 53 and 55 and the guide tube 11 are supplied to the position close to the needle work unit 90. Then, the end of the supplied upper thread 3 is received by the loop 115 waiting to pass through the hole of the needle 91, and when the loop 115 exits the hole of the needle 91, the upper thread 3 ) End portion is inserted into the hole of the needle 91 (see Fig. 6). At this time, the length of the end region of the upper thread 3 inserted into the hole of the needle 91 is the moving section of the movable part 61 of the thread hook portion 101 of the thread take-up 100 and the thread tension adjusting unit 60. It should be longer than the length, in order to prevent the upper thread (3) from coming out of the hole of the needle 91 during the initial operation of the thread take-up 100 and the mounting force adjusting unit 60.

After the end of the upper thread 3 is inserted into the hole of the needle 91, the controller (not shown) moves one side 83a of the belt 83 downward while the other side 83b of the belt 83 Drives a drive motor (not shown) of the transfer means 80 to move upward. Then, the first intermediary inner tube 53 coupled to one side 83a of the belt 83 moves downward to be accommodated in the second intermediary inner tube 55 and simultaneously engages with the other side 83b of the belt 83. The second intermediate inner tube 55 is moved upward. At the same time, the support 71 coupled to one side 83a of the belt 83 is moved downward to move the movable member 61 by the elastic member 65 so that the upper thread 3 is connected to the thread contact portion 63. The real part 76 of the thread transfer member 75 coupled with the other side 83b of the belt 83 moves upward to contact the upper thread 3 with the thread contact portion 63 of the movable body 61. Increase length Then, the thread hanger 101 of the thread take-up 100 rotates upward to fill up the upper thread 3 (see FIG. 7).

Thus, the upper thread supply device 1 of the automatic machine according to the present invention is supplied to the needle work unit 90 without using the mounting tension holding unit for adjusting the supply tension of the plurality of upper threads like the upper thread supply device of the conventional automatic machine. The structure is simple by providing a mounting tension adjusting unit 60 to adjust the supply tension of the selected one upper thread (3), the user has to combine all the plurality of upper threads like the upper thread supply of the conventional automatic embroidery machine You can save time because you do not need to.

In addition, the upper thread supply device 1 of the automatic machine according to the present invention includes the first and second intermediary inner pipes 53 and 55 and the mounting force adjusting unit 60 and the thread take-up 100 of the guide tube assembly 50. By operating by using the transfer means 80, there is no need to provide a separate drive means can be simplified in structure.

As described above, according to the present invention, the structure is simple and the working time can be shortened.

Claims (14)

In the upper thread feeder for an automatic embroidery machine, A head stem equipped with a needle work part; A thread supply unit having a thread guide path for supplying any one selected from a plurality of upper threads having different colors; A guide tube assembly provided on the head stem and having a guide tube spaced along an axial direction of the thread guide path to receive the upper thread from the thread guide path and guide the needle thread to the needle work part; Movable interval between the thread guide path and the guide tube in the transverse direction of the upper thread supply direction to contact the upper thread, and the movable body in contact with the upper thread to bypass the supply path of the upper thread to adjust the tension of the upper thread Upper thread supply device for an automatic machine, characterized in that it comprises a mounting force adjusting unit having a drive unit for moving the movable body in the transverse direction of the supply direction of the upper thread. The method of claim 1, The thread tension adjusting unit further comprises a thread feed member for transferring the upper thread in the direction of the movable body so as to increase the contact length of the upper thread in contact with the movable body. The method of claim 2, The mounting force adjusting unit, One side is further rotatably coupled to the movable body and the other side has a connection member coupled to the drive unit, The driving unit upper thread supply apparatus for an auto embroidery machine, characterized in that it comprises an elastic member for rotating the connecting member with a predetermined elastic force. The method of claim 3, The movable body is provided with a circular cross section, the upper thread supply apparatus for an automatic machine, characterized in that the outer circumferential surface is provided with a thread contact portion formed to receive and contact the upper thread. The method of claim 4, wherein The mounting force control unit is integrally coupled to the connection member, and further has a rotation shaft that is rotatably coupled to the head stem, The rotating shaft is coupled to the elastic member is rotated by the elastic member, the upper thread supply device for an automatic machine. The method according to any one of claims 3 to 5, The guide tube assembly further has a movable guide tube provided to be movable between the thread guide path and the guide tube, The upper thread supply apparatus for an automatic embroidery machine, characterized in that it further comprises a conveying means for transporting the movable guide tube so that the thread guide path and the guide tube are connected and spaced apart. The method of claim 6, The transfer means, A pair of pulleys spaced apart along the longitudinal direction of the movable guide tube; A belt coupled to the pair of pulleys and coupled to the movable guide tube to transfer the movable guide tube; Upper thread supply device for an automatic machine, characterized in that it comprises a drive motor for driving the pulley. The method of claim 7, wherein The mounting force adjusting portion further has a catch portion extending to the other side of the connecting member, The hooking portion of the upper thread supply device for an automatic machine, characterized in that the rotation is limited by the support provided to be movable coupled to one side of the belt. The method of claim 8, The thread transfer member is upper thread supply device for an automatic embroidery machine, characterized in that coupled to the other side of the belt is provided to be movable. The method of claim 9, The movable guide tube is connected to one side and the other side of the belt, respectively, the upper thread feeding device for an automatic machine, characterized in that it comprises a first inner inner pipe and a second inner inner pipe moving to face each other. The method of claim 10, The upper thread supplying device for an automatic machine according to claim 1, wherein any one of the first middle inner tube and the second middle inner tube is receptably coupled to the other. The method of claim 10, The movable body of the upper thread supply apparatus for an automatic machine, characterized in that passing through the separation interval between the thread guide path and the first intermediate inner tube. The method of claim 10, The upper thread supplying device for an automatic embroidery machine further comprising a thread take-up which takes an upper thread located in a spaced space between the first intermediate inner tube and the guide tube. The method of claim 13, The thread take-up, A thread hanger portion for receiving the second intermediate inner tube therethrough; A rotating arm having one side integrally coupled to the thread-hanging portion and the other side rotatably coupled to the head stem; One side is coupled to the rotating arm, the other side is coupled to the belt comprising a link assembly for rotating the rotating arm by the movement of the belt upper thread supply apparatus for an automatic machine.