JP4482358B2 - Sequin feeder - Google Patents

Description

  The present invention relates to a sequin supply device that supplies sequin to a sewing position of a sewing machine.

  Conventionally, a technique for sewing sequins (also called sequins) to a work cloth using an embroidery sewing machine is known. For example, Patent Document 1 describes a technique for preventing the turnover of sequins accompanying cloth feeding by retracting the needle bar from the needle bar with a jump solenoid and tightening the upper thread with a balance while sewing sequins. ing. Patent Document 2 describes a technique for setting sewing data necessary for sequin sewing with a controller of an embroidery sewing machine.

Conventionally, there has been known an apparatus that feeds a tape having sequins connected thereto, cuts the leading sequin from the tape, and supplies the cut sequin to the sewing position of the sewing machine. For example, Patent Document 3 describes an apparatus including a guide rail that guides a tape so as not to be displaced in the width direction. Patent Document 4 describes an apparatus including means for adjusting the distance between the left and right guide rails in accordance with the width of the tape so as to cope with sequin size change.
Japanese Patent Laid-Open No. 2-144094 Japanese Patent Laid-Open No. 5-220284 West German Utility Model No. 9209964 Specification European Patent Application No. 0768417

  By the way, when the sequin size changes, not only the tape width but also the tape feed amount changes, and the sequin cutting position also changes accordingly. For this reason, conventionally, after adjusting the corresponding member of the supply device according to the size of the sequin, press the button on the controller to operate the tape feed motor, send out the tape for trial, and change the shape of the first sequin. Inspection, adjustment, delivery, and inspection work were repeated until a regular shape sequin was obtained.

  However, in a multi-head type sewing machine, the controller is only installed at one end of the machine frame, even though the machine frame is horizontally long because a plurality of sewing machines are arranged side by side. Conventionally, an operator has to go back and forth between each sewing machine and the controller many times. In addition, since the supply device is attached to each sewing machine, for example, it takes a lot of time and effort to complete the adjustment work of all the supply devices with a 20-head sewing machine.

  Further, conventionally, the feeding amount of the tape 17 is adjusted by changing the rotation speed of the motor, so that the feeding member is caused by uncertain factors such as an assembly error of the movable part between the motor and the feeding member and inertia. It was difficult to accurately determine the forward end position. For this reason, the cutting position of the tape 17 is likely to be inaccurate. In particular, in the case of a small sequin S having a diameter of about 5 mm, there is a problem that cutting defects are conspicuous and the quality of the sewn product is lowered.

  Further, as shown in FIG. 10, the tape with the sequins connected is easy to flutter and return during the feeding because the connecting portion between the sequins is narrow. Although the conventional sequin supply device can move the tape 17 straight by the guide rail, it is difficult to suppress the behavior of the tape 17 in the thickness direction. For this reason, the cutting position of the tape 17 is likely to be inaccurate, and the sequin S as a decorative part is cut in an irregular shape and sewn to a work cloth.

  The objective of this invention is providing the sequin supply apparatus which can position the connection part of a sequin accurately to a cutting member, solving the said subject, suppressing the behavior of the thickness direction of a tape.

  Another object of the present invention is to provide a sequin supply device that can accurately determine the forward end position of the delivery member and reliably prevent sequin cutting failure when the sequin size is changed.

In order to solve the above problems, the present invention drives a guide member that guides a tape with sequins toward a sewing position of the sewing machine, a delivery member that feeds the tape along the guide member, and a delivery member. And an actuator for cutting the leading sequin from the tape , and a pressing means for pressing the tape against the guide member near the cutting member at the time of cutting, and the engaging member engages with the hole (h) of the sequin. It includes a joint portion (33), and the pressing means includes a cam portion that moves the engaging portion toward the guide member at the forward end position of the delivery member .

Sequin feeding device comprises an adjustment member for adjusting the cutting position of the leading sequin, a regulating portion for regulating the forward end position of the delivery member to the adjusting member, the adjusting section for positioning the regulating portion in the feeding direction of the tape Is preferably provided .
It is more preferable to provide a member that adjusts the position of the retracting end of the delivery member when the order of the sequin hole from which the engaging portion is engaged is changed with the sequin size change .

  In each of the above means, the kind of the sewing machine is not particularly limited, and various sewing machines capable of sewing sequins such as an embroidery sewing machine, a straight stitch sewing machine, and a chain stitch sewing machine can be used. The shape of sequin is not particularly limited, and examples thereof include a perfect circle, an ellipse, a rounded quadrangle, a star, and a rhombus. The tape in which sequins are connected is a strip-like material in which sequins are connected in a daisy chain, and a reel, bobbin, container, or the like can be used as a supply source.

  As the tape guide member, for example, a member having a guide groove for guiding the tape straight can be used. In addition, it is preferable to provide a pair of guide plates so that the distance between the guide plates can be adjusted so that the sequin size can be changed. Further, both guide plates may be connected by an interlocking member so as to be movable in parallel so that the distance between the pair of guide plates can be adjusted without changing the center of the guide groove.

  Examples of the tape feeding member include a rotating member, a swinging member, a linear moving member, a combined motion member combining linear movement and swinging, and the like. For example, a motor, a solenoid, an air cylinder, or the like can be used as the actuator that drives the delivery member. As the motor, a stepping motor is preferable in that the amount of tape fed can be easily controlled.

  The cutting member is a member that cuts the connecting portion between the first sequin and the next sequin. Specifically, the cutting member shears the connecting portion to cut the first sequin from the tape, or pulls the first sequin. A member to be separated from the tape can be used. Further, the cutting member may be driven by a dedicated actuator, or may be driven using a sewing machine movable portion.

  An actuator such as a solenoid or an air cylinder can be used as the pressing means, but a cam is preferably used because it can be configured simply and compactly. Specifically, an engaging portion that engages with a sequin hole is provided on the sending member, and a cam portion that pushes the engaging portion toward the guide member at the forward end position of the sending member may be provided on the pressing means. The engaging portion can be an elongated member such as a pin or a rod, and the cam portion can be an oblique cam such as an inclined surface or an inclined groove.

  As the adjusting member, a member that adjusts the position of the cutting member may be used, or a member that adjusts the tape feed amount may be used. However, in the former case, if the amount of movement of the delivery member changes due to the vibration of the sewing machine or the like, the cutting position may be shifted, and the sequin may not be cut into a regular shape (for example, a perfect circle). On the other hand, in the latter case, there is an advantage that the connecting part of the sequin can be accurately positioned on the cutting member by adjusting the moving amount of the delivery member, and the sequin as the decorative part can be cut with good appearance. Specifically, it is preferable to provide the adjusting member with a restricting portion for restricting the forward end position of the delivery member and an adjusting portion for adjusting the position of the restricting portion in the tape feeding direction.

  In particular, by adjusting the position of the regulating portion of the adjusting member in the tape feeding direction, the forward end position of the feeding member can be accurately determined when the sequin size is changed. When a cam is used as the pressing means, the supply device can be configured in a small and simple manner by providing the cam on a part of the adjustment member or the delivery member. Specifically, an engaging portion that engages with the sequin hole is provided on the delivery member, and a cam portion that pushes the engaging portion toward the guide member at the forward end position of the delivery member is provided on the pressing means. It is good to form in either one or both of a delivery member and a control part.

According to the sequin supply device of the inventions according to claims 1, 2 and 3, since the tape is pressed against the guide member when the sequin is cut, the behavior of the thickness direction of the tape is suppressed and the sequin connecting portion is accurately used as the cutting member. Can be positioned.
According to the sequin supply device of the inventions according to claims 2 and 3 , the regulation member is provided with the regulation part for regulating the forward end position of the delivery member and the adjustment part for adjusting the position of the regulation part. At this time, it is possible to accurately determine the forward end position of the delivery member and reliably prevent sequin cutting failure.
According to the sequin supply device of the invention according to claim 3 , the retreat end of the sending member when the order of the sequin hole from which the engaging portion of the sending member is engaged is changed with the change in the size of the sequin. Since a member for adjusting the position is provided, it is possible to cope with a change in sequin size.

  FIG. 7 shows the best mode for carrying out the present invention. This sequin supply device feeds the tape along the guide members 44 and 45 (bottom plate, guide plate) having guide grooves 46 for guiding the tape 17 connected with the sequin S toward the sewing position of the sewing machine, and the guide member. A feeding member 31, a stepping motor 36 (see FIG. 2) as an actuator for driving the sending member, a cutting member 41 for cutting the leading sequin from the tape, an adjusting member 58 for adjusting the cutting position of the leading sequin, An oblique portion 64 is provided as a cam portion that presses the tape against the bottom surface of the guide groove 46 near the cutting member 41 when the sequin is cut.

  The adjusting member 58 is provided with a restricting portion 62 that restricts the forward end position of the delivery member 31 and an adjusting portion 61 (adjustment bolt: see FIG. 6) that adjusts the position of the restricting portion 62 in the tape feeding direction. The feed member 31 is provided with an L-shaped feed pin 33 as an engaging portion that engages with a sequin hole, and a cam portion 64 is formed in the regulating portion 62 of the adjustment member 58 in a downward oblique shape. The cam portion 64 is configured to push down the lower end of the engaging portion 33 toward the bottom surface of the guide groove 46 at the forward end position of the delivery member 31.

  Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a plurality of (for example, 20) embroidery sewing machines 3 are juxtaposed in the machine casing 2 of the multi-head sewing machine 1. Each embroidery sewing machine 3 includes a head 4, a tension base 5, and a bed 6, and a sequin supply device 7 is attached to one side of the head 4. A table 8 is installed on the machine frame 2 at the same height as the bed 6, and an embroidery frame 10 that holds a work cloth 9 is placed on the table 8. One controller 11 is installed at one end of the table 8, and the controller 11 controls the embroidery sewing machine 3 and the sequin supply device 7 of all heads synchronously.

  As shown in FIGS. 2 and 3, the sequin supply device 7 includes a frame 13 attached to the head 4. A slide cover 14 is supported on the frame 13 by an air cylinder 15 through a linear guide 16 so as to be able to move up and down obliquely. The slide cover 14 has a reel 18 for storing a tape 17 (see FIG. 7 for details) in which sequins S are connected in series, a plurality of rotors 19 for guiding the tape 17, and the tape 17 is sewn to the embroidery sewing machine 3. A supply mechanism 21 for supplying the position (below the needle bar 20) is provided.

  The supply mechanism 21 is disposed at an operating position approaching the work cloth 9 when the air cylinder 15 is extended (see FIG. 3a), and is disposed at a rest position away from the work cloth 9 when the air cylinder 15 is contracted. (See FIG. 3b). The slide cover 14 is provided with a projection 22, and the frame 13 is provided with a locking plate 23 and a solenoid 24 for rotating the locking plate 23. The controller 11 designates the embroidery sewing machine 3 that does not perform sequin sewing, the solenoid 24 of the sequin supply device 7 corresponding to the sewing machine 3 is excited, the protrusion 22 is locked to the locking plate 23, and the supply mechanism 21. Is held in the rest position.

  As shown in FIG. 4, a rod 28 is held by a block 27 on a substrate 26 of the supply mechanism 21, and a slider 29 is supported on the rod 28 so as to be movable back and forth. A feed member 31 is pivotally supported on the slider 29 by a bolt 30 so as to swing up and down, and is urged downward by a spring 32. An L-shaped feed pin 33 protrudes downward from the front end of the delivery member 31, and a slope 34 is formed on the rear side of the lower end. When the slider 29 moves forward, the delivery member 31 inserts the lower end of the feed pin 33 into the hole h of the sequin S, and feeds the tape 17 toward the sewing position of the embroidery sewing machine 3. When the slider 29 moves backward, the delivery member 31 swings upward by the action of the inclined surface 34, and the feed pin 33 is detached from the tape 17.

  A stepping motor 36 is installed on the back surface of the substrate 26 (the surface opposite to the delivery member 31), and its output shaft 37 is connected to the slider 29 via an arm 38 and a link 39. During the sewing operation, the stepping motor 36 is controlled in synchronization with the main shaft (not shown) of the embroidery sewing machine 3, the slider 29 is driven back and forth with the forward and reverse rotation of the output shaft 37, and the tape is 17 leading sequins S are supplied to the lower side of the needle bar 20. A cutting member 41 is supported at the front end of the substrate 26 so as to be pivotable up and down by a shaft 40. When the needle bar 20 is lowered, the needle stopper 42 (see FIG. 2) steps down the cutting member 41, and the cutting member 41 cuts the leading sequin S from the tape 17. For the cutting member 41, a cutter that is long in the left-right direction (a direction perpendicular to the tape feeding direction) is used.

  As shown in FIGS. 5 and 6, a pair of left and right guide plates 45 are placed on the bottom plate 44 of the supply mechanism 21, and the tape 17 is guided linearly toward the sewing position on the relative surface of each guide plate 45. A guide groove 46 is formed. The bottom plate 44 constitutes a guide member together with the guide plate 45, and the bottom plate 44 forms the bottom surface of the guide groove 46. The right guide plate 45 is attached to the bottom plate 44 by a screw 48 passing through the long hole 47 so that the position of the right guide plate 45 can be adjusted in the left-right direction. The left guide plate 45 is held by two front and rear width plates 49 so as to be parallel to the right guide plate 45. An interlocking plate 51 is pivotally supported by a bolt 50 on the front width plate 49, and a pin 53 of the guide plate 45 is fitted into a notch 52 of the interlocking plate 51. Then, as shown in FIGS. 6A and 6B, by rotating the interlocking plate 51, the distance between the guide grooves 46 does not change its center, and the width of the tape 17 (diameter of the sequin S) is changed. Adjusted.

  Between the left and right guide plates 45, a slit 55 into which the lower end of the feed pin 33 is fitted is formed in the bottom plate 44 long in the front-rear direction. On the right side of the slit 55, a column 56 is fixed on the bottom plate 44 with screws 57, and an adjustment member 58 is assembled to the column 56 with bolts 59. The adjustment member 58 is provided with a long hole 60 inserted into the column 56, an adjustment bolt 61 that is screwed into the column 56, and a regulation piece 62 that protrudes in front of the delivery member 31. The regulating piece 62 functions as a regulating portion that regulates the forward end position of the delivery member 31, and the adjustment bolt 61 adjusts the position of the regulating piece 62 in the feeding direction (front-rear direction) of the tape 17 within the length range of the long hole 60. Functions as an adjustment unit. As a result, the adjustment member 58 is configured so as to adjust the cutting position of the leading sequin S in accordance with the diameter of the tape 17 by adjusting the feeding amount of the tape 17.

As shown in FIG. 7, inclined portions 63 and 64 are formed on the relative surfaces of the delivery member 31 and the regulating piece 62, and the delivery member 31 is restricted from swinging at the forward end position by the engagement of the oblique portions 63 and 64. Thus, the feed pin 33 is prevented from being lifted by vibrations of the embroidery sewing machine 3 or the like. The oblique portion 63 on the delivery member 31 side is formed upward, and the oblique portion 64 that is a cam portion as pressing means on the regulating piece 62 side is formed downward. When the delivery member 31 reaches the forward end position, the oblique portion 63 on the delivery member 31 side engages with the oblique portion 64 on the regulating piece 62 side, and the oblique portion 64 moves the delivery member 31 downward. swings, depressed toward the feeding pins 33 on the bottom of the guide groove 46, the lower end of the feed pin 33 is adapted to press the tape 17 on the bottom of the guide groove 46.

  Accordingly, the connecting portion between the leading sequin S and the next sequin S can be accurately positioned at the cutting position in a state in which the tape 17 is prevented from moving backward by the feed pin 33. Further, the tape 17 is pressed against the bottom plate 44 at the lower end of the feed pin 33 to prevent flapping of the tape 17 beyond this portion, and the connecting portion of the sequin S can be accurately cut by the cutting member 41. Therefore, it is possible to reliably prevent the sequin S, which is a decorative part, from being cut and to sew the sequin S having a regular shape on the work cloth 9 so that a high-quality sewn product can be processed with good quality.

  A stop bolt 65 that contacts the slider 29 is screwed to the rear block 27, and the retracted end position of the delivery member 31 is adjusted by the bolt 65. On the lower side of the block 27, a leaf spring 66 for holding the tape 17 against the bottom plate 44 before the guide groove 46 and a bolt 67 for adjusting the tip height of the leaf spring 66 are provided.

  Further, on the tension bases 5 (see FIG. 1) of all the embroidery sewing machines 3, a switch 69 for operating the stepping motor 36 in the sequin supply device 7 combined with each sewing machine 3 is arranged. The position of the switch 69 is within a range that can be reached by an operator standing in front of each embroidery sewing machine 3. When the operator operates the switch 69 while the sewing operation is stopped, the stepping motor 36 rotates forward and backward only once, the feed member 31 reciprocates once, and the feed pin 33 feeds the tape 17. Therefore, when the size of the sequin S changes, the operator can immediately send out the tape 17 without going to the controller 11. It should be noted that the switch 69 of this embodiment also has a function of temporarily stopping the corresponding embroidery sewing machine 3 when operated during the sewing operation.

Next, the adjustment work accompanying the sequin size change will be described. FIG. 7 shows a state in which the supply mechanism 21 supplies, for example, sequin S having a diameter of 5 mm during normal operation of the multi-head sewing machine 1. In this case, the feed pin 33 of the feed member 31 engages with the hole h of the sequin S that is ranked fifth from the top of the tape 17. In this state, the stepping motor 36 is controlled in synchronization with the main shaft of the embroidery sewing machine 3 and rotates with the number of steps set in the controller 11. Then, the delivery member 31 advances from the retracted end position shown in (a) to feed out the tape 17 by 5 mm, stops at the advanced end position shown in (b) abutting against the regulating piece 62, and the leading sequin S is moved to the bottom plate. 44 is sent forward. Immediately after this, the needle bar 20 descends, the needle stopper 42 steps down the cutting member 41, and the cutting member 41 separates the leading sequin S from the tape 17.

FIG. 8 shows an adjustment method of the supply mechanism 21 when the diameter of the sequin S is changed to 9 mm. In this case, the feed pin 33 of the feed member 31 engages with the hole h of the sequin S, which is ranked third from the top of the tape 17. In changing the size, the controller 11 first sets the number of steps of the stepping motor 36 to a value equivalent to 9 mm while all the embroidery sewing machines 3 are stopped. Next, in the supply mechanism 21, the guide plate 45 is opened to adjust the distance between the guide grooves 46, and the adjusting member 58 is advanced to adjust the position of the regulating piece 62 (see FIG. 6b). Subsequently, the switch 69 is pressed, the stepping motor 36 is operated, the delivery member 31 is driven, and the tape 17 is trial-fed. Then, the cutting member 41 is pushed down with the fingertip, the leading sequin S is cut, the shape thereof is inspected, and if there is a defect, readjustment and refeeding are repeated to obtain a normal shape sequin S.

FIG. 9 shows an adjustment method of the supply mechanism 21 when the diameter of the sequin S is changed to 7 mm. Also in this case, the adjustment work can be performed in the same procedure. However, in the case of 7 mm, it is retracted end position of the delivery member 31 when the feed pins 33 of the delivery member 31 is engaged with the hole h of the sequin S is 4 th order from the beginning of the tape 17, the 5mm of , 9 mm, it is necessary to adjust the origin position of the slider 29 by turning the stop bolt 65. After the adjustment, the switch 69 is pressed, the tape 17 is fed out, the leading sequin S is cut, the shape is inspected, and readjustment and refeeding are repeated to obtain a regular sequin S. Therefore, when changing to any size, the operator can easily adjust the feed amount of the tape 17 while standing in front of each sewing machine 3.

  Further, in this adjustment work, the forward end position of the delivery member 31 is regulated by the regulation piece 62 of the adjustment member 58, and therefore the influence of the assembly error or inertia of the movable parts such as the arm 38, the link 39, the delivery member 31 and the like. The connection part of the sequin S can be accurately positioned on the cutting member 41 without receiving. For this reason, even in the case of a small sequin S having a diameter of about 5 mm, it is possible to reliably prevent cutting defects and sew sequins having a regular shape to the work cloth 9. Since the regulating piece 62 mechanically regulates the forward end position of the delivery member 31, the controller 11 may set the number of steps of the stepping motor 36 to a value that makes the delivery member 31 slightly overrun. .

  Next, in the present embodiment, each embroidery sewing machine 3 is provided with a switch 71 for operating the air cylinder 15 of the sequin supply device 7 on the tension base 5. The position of the switch 71 is also within a range that can be reached by an operator standing in front of each embroidery sewing machine 3. Therefore, by operating the switch 71 in front of each sewing machine while the sewing operation is stopped, the supply mechanism 21 corresponding to the operated sewing machine 3 can be switched to the rest position or the operating position independently.

The present invention is not limited to the above-described embodiments. For example, as described below, the present invention can be appropriately modified and embodied without departing from the spirit of the invention.
(1) As shown in FIG. 1, a switch rod 70 is installed between both ends of the machine casing 2 on the lower side of the table 8. This switch rod 70 is used as a switch for starting and stopping all the embroidery sewing machines 3 simultaneously when the multi-head sewing machine 1 is in operation, and when the multi-head sewing machine 1 is stopped, the stepping motors 36 of all the sequin supply devices 7 are simultaneously used. It is used as a switch for operating. In this way, when changing the sequin size, the operator can operate the switch bar 70 while standing in front of each sewing machine 3, and after adjusting the whole head supply device 7, the operator can operate the switch rod 70 once. The tapes 17 can be sent all at once.

(2) A switch (not shown) for operating the solenoid 24 of each sequin supply device 7 within the range of each embroidery sewing machine 3 or the vicinity thereof and within the reach of the operator standing in front of each embroidery sewing machine 3 It is configured so that the supply mechanism 21 corresponding to the sewing machine 3 in which this switch is operated can be independently held at the rest position during the sewing operation.
(3) In each embroidery sewing machine 3, two right and left sequin devices 7 are installed on the head 4.

(4) In the sequin supply device 7 shown in FIG. 7, either one of the delivery member 31 and the regulating piece 62 is provided with an oblique cam portion, and the other is supported by a roller, and the delivery is performed by contact between the cam portion and the roller. The forward end position of the member 31 is restricted.

1 is a front view of a multi-head sewing machine according to an embodiment of the present invention. It is a side view which shows the sequin supply apparatus with which the multi-head type sewing machine of FIG. 1 was equipped. It is a side view which shows the raising / lowering mechanism of the sequin supply apparatus of FIG. It is a side view which shows the supply mechanism of the sequin supply apparatus of FIG. It is the VV sectional view taken on the line of FIG. FIG. 6 is a sectional view taken along line VI-VI in FIG. 5. It is a side view which shows the tape feeding operation | movement by the supply mechanism of FIG. It is a side view which shows the adjustment method adapted to the sequin of a different size from FIG. It is a side view which shows the adjustment method adapted to the sequin of a different size from FIG. It is a top view of the tape explaining the problem by the conventional sequin supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Embroidery sewing machine 7 Sequin supply device 17 Tape 31 Delivery member 33 Feed pin 36 Stepping motor 41 Cutting member 44 Bottom plate 45 Guide plate 46 Guide groove 51 Interlocking plate 58 Adjustment member 61 Adjustment bolt 62 Restriction piece 63 Inclination part 64 Inclination part S Sequin h hole

Claims (3)

Guide members (44, 45) for guiding the tape with the sequin (S) connected toward the sewing position of the sewing machine, a delivery member (31) for feeding the tape along the guide member, and an actuator for driving the delivery member ( 36), a cutting member for cutting the leading sequin from the tape (41), and a pressing means for pressing the guide member tapes near the cutting member during the cutting (64), the delivery member of the sequin hole (h ), And a pressing means includes a cam portion (64) that pushes the engaging portion toward the guide member at the forward end position of the delivery member. . The sequin supply device includes an adjustment member (58) that adjusts the cutting position of the leading sequin, a regulation portion (62) that regulates the advance end position of the delivery member on the adjustment member, and a regulation portion that is positioned in the tape feeding direction. The sequin supply device according to claim 1, further comprising an adjustment section (61) for adjustment . The sequin supply device is a member that adjusts the retracted end position of the delivery member (31) when the order of the sequin hole (h) with which the engaging portion is engaged from the top of the tape is changed with the sequin size change ( The sequin supply device according to claim 2, wherein 65) is provided .

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