CN1926275A - Sequin feeder - Google Patents

Abstract

A decorative piece feeding device feeds decorative piece connectors (60) drawn from a reel and placed on the upper surface of a support plate (8) at predetermined intervals corresponding to the size of one decorative piece. When the needle bar (31) descends due to a sewing action, the needle pierces the hole (61) of the top decorative piece (S'), and a movable blade (27) is applied downward force by abutting against the needle bar (31) or a member (32) connected to the needle bar (31) to cut off the top decorative piece (S'). The thickness of the decorative piece cutting portion (27a) on the movable blade (27) is made thinner than the thickness of the abutting portion (27b) that abuts against the needle bar (31) or the member (32) connected to the needle bar (31), to ensure strength. For example, the thickness of the portion (27a) corresponding to the needle drop position is reduced. When the movable knife (27) is in the position before contacting the needle bar (31) or the linkage member (32), the upper part (u) of the thickness-reduced portion (27a) of the movable knife (27) is located below the uppermost part (T) of the un-thinned portion (27b) of the movable knife, thereby forming the shape of the movable knife (27).

Description

Decorative sheet feeding device

Technical field

The present invention relates to a decorative sheet feeding device in a sewing machine. The sewing machine cuts the decorative sheet from the decorative sheet connecting body and at the same time sews the decorative sheet to the body to be sewn. The decorative sheet feeding device used for the decorative sheet connecting body composed of decorative sheets.

Background technique

As a conventional decorative sheet feeding device, for example, devices shown in the following Patent Document 1, Patent Document 2, or Patent Document 3 are known. This decorative sheet feeding device has the following feeding mechanism: the decorative sheet connected body is drawn out from a reel on which a decorative sheet connected body formed by connecting a large number of decorative sheets (spangol) is wound and accommodated, and the decorative sheet connected body is placed on the support plate. On the upper surface, the decorative sheet connected body is sent out at a predetermined pitch corresponding to the size of one decorative sheet by the forward or backward action of the feed rod, and 1 Cut off a decorative piece, and sew the decorative piece to the body to be sewn.

Patent Document 1: German Utility Model Registration No. G9209764.2

Patent Document 2: U.S. Patent No. 5,755,168

Patent Document 3: German Patent No. DE19538084 (corresponding to Patent Document 2)

The top of the feeding rod engages and moves forward with the central hole of the decorative sheet to send out the connected body of the decorative sheet, and then retreats to make the top of the feeding rod engage with the central hole of another subsequent decorative sheet. In order to reliably engage the top end of the feeding rod with the central hole of the decorative sheet, a slot for allowing the top end of the feeding rod to bite is provided on the support plate. Cutting of the decorative sheet is performed by a movable knife rotatably arranged at the end of the support plate and a fixed knife fixed at the end of the support plate. Due to the sewing action of the needle bar, the needle bar descends, and after the sewing needle penetrates into the center hole of the sent out decorative sheet, the needle clamper arranged at the lower end of the needle bar abuts against and pushes the movable knife to make the movable knife rotate , cut off the decorative piece.

Fig. 12 is a schematic view of a conventional decorative sheet feeding device, (a) is a side view, and (b) is a plan view. 100 is a support plate, 100a is a groove, 100b is a fixed knife, 101 is a feeding rod, 102 is a movable knife, 103 is a needle bar, 104 is a sewing needle, 105 is a needle clamp, 106 is a connecting body of a decorative sheet, S is a decorative sheet, 106a is the center hole of the decorative sheet S, and S1 is a joint of the decorative sheet S. In the past, such a decorative sheet feeding device could not sew extremely small (eg, 3mm in diameter) decorative sheets. Fig. 12 shows the occasion where it is desired to sew an extremely small decorative sheet with a diameter of 3 mm. The reason why the extremely small decorative sheet cannot be sewed will be explained below.

As shown in FIG. 12( b ), the delivery of the decorative sheet S is carried out with the joint portion S1 between the first and second decorative sheets S at the front of the decorative sheet connector 106 located at the knife edge position of the fixed knife 100b. Yes, the sewing needle 104 is inserted into the central hole 106a of the decorative sheet S being sent out. In this way, when the diameter of the decorative sheet is 3mm, the distance from the tip of the knife 100b shown in A of Figure 12(a) to the needle drop position of the sewing needle 104 is 1.5mm, in the state shown in Figure 12(a) Next, once the needle bar descends, the needle point of the sewing needle 104 will hit the movable knife 102. Therefore, it is practically impossible to perform such an extremely small decorative sheet S sewing.

Considering the feeding mechanism, there are also the following problems. When the feeding rod 101 advances to send out the decorative sheet S, in the past, the top end of the feeding rod 101 is engaged with the center hole 106a of the second decorative sheet S from the front of the decorative sheet connecting body 106. Therefore, in order to send out The decorative sheet S having a diameter of 3 mm must extend the cut groove 100a to the movable knife 102 side. However, since the hard fixed blade 100b is attached to the movable blade side end of the support plate 100, it is impossible to extend the cut groove 100a. Thus, for this reason, it is impossible to feed and sew an extremely small decorative sheet S in the conventional decorative sheet feeding device.

Contents of Invention

The present invention is made in view of the above-mentioned problems, and provides a decorative sheet feeder capable of sewing a connected decorative sheet composed of extremely small decorative sheets.

The decorative sheet feeding device of the present invention includes: a feeding mechanism and a movable knife, and the feeding mechanism sends out the connected body of decorative sheets drawn from the reel and placed on the upper surface of the support plate at a predetermined pitch corresponding to the size of one decorative sheet and when the needle bar descends due to the sewing action of the sewing machine, after the sewing needle penetrates into the hole of the decorative sheet sent out by the feeding mechanism, the movable knife is resisted by a member that is linked with the needle bar or with the needle bar. The decorative sheet is then cut by being forced downward, and it is characterized in that the thickness of the part for cutting the decorative sheet on the movable knife is made in a ratio that is against the needle bar or the member that moves with the needle bar. The thickness of the contact part is thin.

For example, by reducing the thickness of the part of the movable knife corresponding to the needle drop position, the part for cutting the decorative sheet is formed. In the posture before the contact of the members, the upper portion of the portion for cutting the decorative sheet where the thickness of the movable blade is reduced is located below the uppermost portion of the contact portion where the thickness of the movable blade is not reduced.

In this way, by making the thickness of the portion for cutting the decorative sheet on the movable knife thinner than the thickness of the abutting portion of the needle bar or a member that moves with the needle bar, the position of the sewing needle (that is, the position of the needle bar) ) is at a position closer to the movable knife than before, and the sewing needle does not collide with the movable knife. Therefore, since the sewing needle does not collide with the movable knife even when a very small decorative piece is sewn, it can be Smaller (ie, extremely small) decorative pieces are sewn on. In addition, since only the portion for cutting the decorative sheet of the movable knife is thinned, and the thickness of other parts is the same as before, the thickness of the movable knife mounting portion can be easily ensured for mounting strength. That is, it is preferable that the thickness of the abutting portion of the movable knife that abuts against the needle bar or the member fixed to the needle bar be the same as conventionally. Thus, during one sewing operation, when the needle bar is driven to descend, although the needle bar or the member fixed on the needle bar abuts against the abutting part of the movable knife, the abutting part can move. Since the abutting portion of the knife is a portion where the thickness of the movable knife is not reduced, it can easily withstand the impact at the time of abutting without damaging the movable knife.

In addition, the decorative sheet feeding device of the present invention is characterized in that the feeding mechanism sends the decorative sheet through the forward and backward movements of the feeding rod, and the top end of the feeding rod is in contact with the decorative sheet on the support plate. The hole of at least one decorative sheet of the sheet connecting body is engaged, and the feeding action is performed by advancing the feeding rod. When the feeding rod is advanced, the position where the top of the feeding rod should engage with the hole of the decorative sheet can be according to The size of this decorative sheet is changed.

In this way, due to the following structure: when the feeding rod advances, the position where the top of the feeding rod should engage with the hole of the decorative sheet can be changed according to the size of the decorative sheet. The hole of the second decorative sheet from the front or the hole of the third decorative sheet from the front of the sheet connecting body is engaged, and the decorative sheet is sent out. In this way, when sewing a very small decorative sheet, by engaging the top end of the feeding rod with the hole of the third decorative sheet connecting body from the front, the groove of the support plate is not extended or the fixing is not hindered. In the case of knives, very small decorative pieces can be sent out.

Like this, adopt the present invention, can obtain following excellent effect: in order to keep the required strength of movable knife, by thinning the thickness of movable knife at necessary part, and also done improvement to the shape of movable knife (making The portion where the thickness of the movable knife is thinned is located below the abutment portion where the thickness of the movable knife is not reduced), and only by reducing the thickness of the movable knife to a certain extent, can the decorative sheet be sewed with a smaller size than before. The decorative sheet connector.

A brief description of the attached drawings

Fig. 1 is an external perspective view showing an embodiment of an embroidery sewing machine embodying a decorative sheet feeding device according to the present invention.

Fig. 2 is an enlarged side view showing part of a decorative sheet sewing unit of the same embodiment.

Fig. 3 is a further enlarged side view showing a part of the decorative sheet feeding device in the decorative sheet sewing unit of the same embodiment.

Fig. 4 is a partially cutaway perspective view showing a further enlarged main part of the decorative sheet feeding device shown in Fig. 3 .

Fig. 5 is a partial sectional side view and a schematic plan view of the main parts of the decorative sheet feeding device showing the state in which one decorative sheet feeding operation is completed when the feed rod advances to the front.

6 is a partial sectional side view and a schematic plan view of the main part of the decorative sheet feeding device showing the state immediately after the hook portion is pulled out from the center hole of the decorative sheet when the feed rod is retracted.

Fig. 7 is a partially sectional side view and a schematic plan view of main parts of the decorative sheet feeding device showing the state where the feed rod is retracted to the rearmost position.

8 is a partial sectional side view and a schematic plan view of the main part of the decorative sheet feeder, showing the state at which the hook portion engages with the center hole of the decorative sheet when the feed rod advances.

9 is a partial sectional side view and a schematic plan view of the main part of the decorative sheet feeding device showing the moment when the edge of the through hole of the feed rod is separated from the locking rod when the feed rod advances.

Fig. 10 shows an example of the feeding action of the tiny decorative sheet according to this embodiment, and shows the main part of the decorative sheet feeding device in the state where the feeding operation of one tiny decorative sheet is completed when the feed rod advances to the front, (a) is its part Sectional side view, (b) is a schematic top view, and (c) is a partially cut perspective view.

Fig. 11 is a partial cross-sectional side view of the state in which the needle bar is lowered and the needle gripper at the lower end of the needle bar and the movable knife are just abutted against in the end state of the feeding operation shown in Fig. 10 .

Fig. 12 is a side view and a plan view showing problems in the conventional decorative sheet feeding device.

                                                         

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 shows an embodiment of the present invention in a 4-head embroidery sewing machine having 4 sewing machine heads. The needle bar case 2 is provided corresponding to each sewing machine head, and the needle plate 50 is arranged below the needle bar of each sewing machine head.

Decorative piece sewing unit 1 is respectively installed in the left side and/or the right side of each needle bar box 2, only is installed in the left side in the present embodiment. Each needle bar box 2 is made up of multiple needles, when the decorative piece sewing unit 1 is installed on the left side of the needle bar box 2 as in this embodiment, the leftmost needle in the needle bar box 2 is used as the needle for sewing the decorative piece. needle to use. As is well known, the embroidery frame 51 is driven in the lateral direction (X direction) and front-rear direction (Y direction) according to sewing data.

FIG. 2 is an enlarged side view of the decorative sheet sewing unit 1 . FIG. 3 is a further enlarged side view showing a portion of the decorative sheet feeding device 6 in the decorative sheet sewing unit 1 . FIG. 4 is a partially cutaway perspective view showing a further enlarged main part of the decorative sheet feeding device 6 .

As shown in FIG. 2 , the decorative sheet sewing unit 1 supports the reel 5 on which the decorative sheet connecting body 3 is wound on the mounting base 4 , and also supports the decorative sheet feeding device 6 . Mounting base 4 is installed relative to needle bar box 2 by the connecting rod not shown in figure and can move up and down. Fig. 2 and Fig. 3 show the attitude of the state where the mounting base 4 is lowered to the lowered position and can be used for sewing decorative pieces. When not performing decorative piece sewing, the mounting base 4 retreats to the upper position, so as not to hinder normal embroidery sewing. This lifting drive is simultaneously performed on each machine head by an air cylinder not shown. When the embroidery sewing machine is a single-head sewing machine with a small number of heads, it can also be manually raised and lowered.

The reel 5 around which the decorative sheet connector 3 is wound is rotatably and detachably supported on the upper end of an arm portion 4 a formed on the upper portion of the mounting base 4 . The decorative sheet connecting body 3 is formed by punching a synthetic resin sheet of a predetermined width and then connecting many circular decorative sheets S through the joint part S1. A hole for needle penetration is formed in the center of each decorative sheet S. (central hole) 3a (refer to FIG. 4).

Next, a structural example of the decorative sheet feeding device 6 will be described in detail. The decorative sheet feeding device 6 is assembled on the support plate 7 installed under the mounting base 4 . A support plate 8 for supporting the decorative sheet is formed horizontally at the lower end of the support plate 7 . The decorative sheet connecting body 3 drawn out from the reel 5 hangs down along the mounting seat 4 through the tension roller 45 and the turning roller 46, and is guided to the support plate 8 through the guide 12 installed at the back of the bracket 11, from the front of the embroidery sewing machine. Look to the rear to send. In addition, in the following description of the decorative sheet sewing unit 1, the front-back direction is described as being opposite to that of the embroidery sewing machine. That is, the forward direction of the feeding direction of the decorative sheet (the rear viewed from the front of the embroidery sewing machine) is defined as the front.

On the support plate 8, a notch 8a having a predetermined length and an appropriate width is provided along the front-rear direction (Y direction) from the front position to the center position (see FIG. 5( a )). By adjusting the position of the guide 12 in the left-right direction (X direction), the central hole 3a of each decorative sheet S of the decorative sheet connecting body 3 is aligned with the notch 8a. That is, the guide 12 mounted on the back of the bracket 11 is a member for aligning the central hole 3a of each decorative sheet S of the decorative sheet connecting body 3 with the notch 8a of the support plate 8, rather than for connecting the decorative sheet. The body 3 is positioned at a predetermined position on the support plate 8 . As will be described later, the slot 8a of the support plate 8 is for engaging the hook portion 18a at the top end of the feed rod 18 and the engaging claw 33a of the lock lever 33 with the center hole 3a of the decorative sheet S on the support plate 8. It is provided so as to allow the tip end portions 18a and 33a to bite into.

As shown in FIG. 3 , a pivot shaft 15 whose axis is rotatable in the left-right direction (X direction) is supported at the central portion of the support plate 7 . The swing rod 16 is fixed on the rotation shaft 15 by a screw 17, and the free end of the swing rod 16 is rotatably supported by a shaft 19 through a feed rod 18 having a hook portion 18a formed at the tip. Also, on the rotating shaft 15, a screw 21 is used to fix the driven lever 20, and the driven lever 20 is adjacent to the swing lever 16. As a result, the driven lever 20 and the swing lever 16 are integrated into a bell crank shape. .

One end of the torsion spring 22 embedded in the rotating shaft 15 is fixed on the support plate 7, and the other end is hung on the driven rod 20, whereby the swing rod 16 swings counterclockwise in FIG. 3 and applies force. Also, one end of the torsion spring 23 embedded in the shaft 19 is fixed to the swing rod 16, and the other end is hung on the feed rod 18, whereby the feed rod 18 rotates clockwise to apply force. In this way, the hook portion 18a at the tip of the feed rod 18 is always biased in a direction approaching the support plate 8 .

The feeding rod 18 engages the hook portion 18a at its top end with the central hole 3a of the decorative sheet S of the decorative sheet connecting body 3 placed on the upper surface of the support plate 8, so that the feeding rod 18 moves forward and the decorative sheet is The connected bodies 3 are delivered forward at a predetermined pitch. To be described in detail, the feed rod 18 moves forward and backward following the swing of the swing rod 16, and sends out the decorative sheet connectors 3 sequentially at a predetermined distance. The swing rod 16 and its swing mechanism are equivalent to making the feed rod 18 move forward and backward. Feeding mechanism for backward action. The free end of the driven rod 20 integrated with the swing rod 16 is connected to the free end of the driving rod 38 through a connecting rod 37 . The driving rod 38 is fixed on the output shaft 40 of the motor 36 , and the motor 36 is fixed on the left side of the mounting base 4 . Driven by the motor 36, the driving rod 38 is driven to reciprocate and swing within a predetermined angle range, so as to carry out the sending action of the decorative sheet connecting body 3 .

The swing lever 16 that swings and exerts force in the counterclockwise direction stops in the posture shown in FIGS. . Fig. 5(a) is an enlarged partial cross-sectional side view showing the main part of the decorative sheet feeding device 6 in the state where the decorative sheet connected body 3 has been fed out, and (b) is a schematic plan view thereof. That is, in the finished state of sending out the decorative sheet connecting body 3, as shown in FIGS. The joint portion S1 between the first decorative sheet S and the second decorative sheet S is located at the knife edge position of the fixed knife 8b formed by the front end edge of the support plate 8 .

The stopper 25 is constituted by a screw screwed to a bracket 26 fixed to the support plate 7 , and its rear end abuts on the swing lever 16 . The screw is locked by tightening the nut.

As is clear from FIGS. 3 and 4 , the movable knife 27 is rotatably supported on the lower part of the support plate 7 by the pin 28 , and is always held in a retracted position above the fixed knife 8 b by the torsion spring 30 . On the movable knife 27, a tip portion 27a with a thin plate thickness is formed as a part for cutting the decorative sheet. The thickness of the contact portion 27b is thin. That is, the upper part u of the distal end part 27a of the movable knife 27 is formed in an inclined shape so that the thick part 27b of the movable knife 27 becomes the uppermost part T when the movable knife 27 is in the retracted posture. The movable knife 27 is pushed by the needle holder 32 at the lower end of the needle bar 31 when it descends. Once it is pushed by the needle holder 32, it will swing against the elastic force of the torsion spring 30, and cooperate with the action of the fixed knife 8b to hold the decorative sheet. The joint S1 of S is cut off. At this time, since the upper part u of the distal end portion 27a of the movable knife 27 is cut into an inclined shape, so that the thick plate portion 27b becomes the uppermost part T, the lowered needle holder 32 and the uppermost part T of the movable knife 27 are aligned with each other. The contact of the thick plate portion 27b prevents the movable knife 27 from being damaged due to contact with the weak tip portion 27a. And, when the needle clamp 32 rises together with the needle bar 31 , the movable knife 27 returns to the withdrawn position by the restoring force of the torsion spring 30 .

The guide 12 for guiding the decorative sheet connecting body 3 to the support plate 8 can be replaced according to the width of the placed decorative sheet connecting body 3, and two guiding parts 12a with a U-shaped cross section are formed by bending the plate. The distance between the upright wall surfaces of the two guide portions 12a is set to be slightly larger than the width of the decorative sheet S. As shown in FIG. A pressing member 44 is attached to the front surface of the bracket 11 on which the guide 12 is attached. The pressing member 44 is formed of an elastic plate such as a spring steel plate, has a predetermined length, and has a width substantially equal to or slightly wider than that of the decorative sheet S. As shown in FIG. One end side thereof is fixed to the bracket 11 , the central part is curved in an arc shape, and the other end side elastically contacts the upper surface of the support plate 8 . On its end edge, a portion covering the cutout 8a of the support plate 8 is cut away so that the cutout 8a is not closed (see FIG. 4). The decorative sheet connector 3 drawn out from the guide 12 is inserted between the support plate 8 and the pressing member 44 elastically contacting the upper surface of the support plate 8 .

The locking rod 33 arranged above the feeding rod 18 and the mechanism for driving the locking rod 33 will be described below.

As shown in FIG. 4 , the lock lever 33 has an engaging claw 33 a formed on one end thereof, and a stop portion 33 b formed on the other end thereof. The middle portion thereof is rotatably supported by a support block 35 attached to the support plate 7 via a pin 39 . In order to facilitate the observation of the locking lever 33, the front part of the support block 35 is cut away to show in FIG. 4 . The engaging claw 33 a of the lock lever 33 passes through the through hole 18 b formed in the feed lever 18 . A torsion spring (not shown) is provided on the pin 39 provided on the supporting block 35, and the locking lever 33 is applied with a rotational force by using the torsion spring so that it rotates counterclockwise relative to the supporting block 35. 33b abuts against the stopper portion 35a of the support block 35, and holds the end edge of the engaging claw 33a facing the inside of the notch 8a of the support plate 8 in a free state. In this state, as shown in FIG. 5( b ), the engaging claw 33 a of the locking lever 33 is engaged with the center hole 3 a of the decorative sheet S on the support plate 8 to lock the decorative sheet connector 3 so that it cannot move. To be described in detail, when the support plate 8 retreats, the opening edge of the through hole 18b of the feeding rod 18 abuts against the locking rod 33, and overcomes the counterclockwise rotation force of the locking rod 33 formed by the torsion spring 30, so that The lock lever 33 turns clockwise. Thus, the engaging claw 33a rotates upward, and the engagement between the engaging claw 33a of the lock lever 33 and the center hole 3a of the decorative sheet S is released.

Moreover, the support block 35 for supporting the locking lever 33 can adjust the fixed position with respect to the front-back direction of the support plate 7 (feeding direction of the decorative sheet connection body 3 on the support plate 8). Thereby, the engagement position of the engaging claw 33a of the lock lever 33 and the center hole 3a of the decorative sheet S can be adjusted according to the size of the decorative sheet S. FIG. Therefore, the support plate 7 can also adjust the fixed position relative to the mounting seat 4 in the front-rear direction (the feeding direction of the decorative sheet connecting body 3 on the support plate 8 ).

The embroidery machine of this embodiment is respectively provided with nine needle bars 31 in the needle bar box 2 of each sewing machine head. As mentioned above, the decorative piece sewing unit 1 is installed on the left side of the needle bar box 2. When performing decorative piece sewing , by selecting the needle bar 31 at the leftmost end, the decorative piece sewing unit 1 is lowered to be in an active state, and the decorative piece sewing is performed by cooperating with the action of the needle bar 31 .

Next, the decorative sheet feeding operation in this embodiment will be described with reference to FIGS. 5 to 9 shown in order.

Fig. 5 shows the end state of feeding operation of one decorative sheet. As mentioned above, one decorative sheet S protrudes in front of the support plate 8, and this joint part S1 is aligned with the knife edge of the fixed knife 8b. Also, as described above, the hook portion 18a of the feed rod 18 engages with the central hole 3a of the decorative sheet S, and the engaging claw 33a of the lock lever 33 engages with the central holes 3a of the subsequent three decorative sheets S.

In this state, the action of the needle bar 31 due to the descent is performed in the following order.

First, the sewing needle 41 (FIG. 3) at the lower end of the needle bar 31 is inserted into the center hole 3a of the decorative sheet S at the top end. Next, the needle holder 32 is brought into contact with the movable knife 27 to push down the movable knife 27 . Thereby, the junction part S1 of the decorative sheet S is cut|disconnected, and one decorative sheet S at the front end is cut|disconnected. In this way, a decorative sheet S that has been cut off falls onto the embroidered cloth W (Fig. The decorative sheet S is sewn on the cloth W to be embroidered by controlling the movement and the up and down movement of the needle bar.

Then, driven by the motor 36, the swing rod 16 rotates clockwise, and at the same time, as shown in FIGS. 6 and 7, the feeding rod 18 retreats. Here, FIG. 6 shows the state immediately after the hook portion 18a of the feed rod 18 is pulled out from the center hole 3a, (a) is a partial cross-sectional side view, and (b) is a schematic plan view. When the hooking portion 18a is pulled out, because the engaging claw 33a of the locking lever 33 is still engaged with the central hole 3a, when the hooking portion 18a of the feeding rod 18 is pulled out from the central hole 3a, the decorative sheet can be reliably prevented from Movement of Connectome 3. In addition, in the state shown in FIG. 6 , the opening edge of the through hole 18 b of the feed rod 18 abuts against the lock rod 33 . If the feeding rod 18 is further retreated from this state, the locking rod 33 will rotate clockwise against the biasing force of the torsion spring by engaging with the opening edge of the through hole 18b of the feeding rod 18. The claw 33a is separated upward from the decorative sheet S, and the engagement between the engaging claw 33a and the center hole 3a of the decorative sheet S is released.

Fig. 7 shows the state in which the feeding rod 18 is retracted to the rearmost, (a) is a partial sectional side view, and (b) is a schematic plan view. In this example, just before the state shown in FIG. 7, the hook portion 18a of the feed rod 18 is inserted into the center hole 3a of the decorative sheet S and then comes out, and the state shown in FIG. 7 is reached. In the process from FIG. 6 to FIG. 7, the decorative sheet connecting body 3 whose engagement with the locking claw 33a of the lock lever 33 is also released will not retreat together with the retreat of the feed rod 18. Due to the spring force of part 44.

Then, the swing rod 16 is driven to swing counterclockwise under the reverse action of the motor 36, and the feeding rod 18 advances to the position shown in FIG. 5, and FIG. 8 and FIG. 9 show the state during the advancement process. First, FIG. 8 shows the moment when the hook portion 18a engages with the decorative sheet S following the advance of the feed rod 18, (a) is a partial cross-sectional side view, and (b) is a schematic plan view. As the feed rod 18 advances after this point, the decorative sheet connected body 3 is fed out in accordance with the advancement of the hook portion 18a engaged in the center hole 3a. Fig. 9 shows the moment when the opening edge of the through hole 18b of the advancing feed rod 18 separates from the locking rod 33, similarly (a) is a partial sectional side view, and (b) is a schematic plan view. The lock formed by the opening edge of the through hole 18 b of the feed rod 18 is released, and the locking rod 33 receives a counterclockwise rotational force due to the elastic force of the torsion spring provided on the pin 39 . FIG. 9 shows a state in which the engaging claw 33a of the lock lever 33 comes into elastic contact with the upper surface of the decorative sheet S. As shown in FIG. Then, while the feeding rod 18 continues to move forward, the engaging pawl 33a of the locking rod 33 relatively slides on the upper surface of the decorative sheet S. As shown in FIG. When the feed lever 18 reaches the feeding end position shown in FIG. 5 , the engaging claw 33 a of the lock lever 33 engages with the center hole 3 a of the decorative sheet S as described above.

And, for example, when the embroidery machine is not powered on, when the excitation of the motor 36 is turned off, the swing lever 16 is in the sending end position shown in Figure 5 due to the elastic force of the torsion spring 22 hung on the swing lever 16. , the swing lever 16 abuts against the braking portion 25 . Motor 36 is a pulse motor, because it is an open control, so once it is subjected to the effect of unreasonable power in the feeding control, it will be out of balance. For this reason, the excitation of the motor 36 is once turned off when the feed rod 18 is at the most advanced position, that is, when the swing rod 16 abuts against the stopper 25 after the feeding is completed. In this way, misalignment will not accumulate due to misalignment because the zero point must be reset even if it is misaligned.

Next, an example of adjustment of each part when the sewn decorative sheet S is changed to another size after the reel 5 is exchanged will be described. This adjustment may be performed simultaneously with the following adjustments (1) to (4) or in an appropriate order.

(1) Adjustment of feed spacing

In order to adjust the feeding pitch, loosen the screw 17 (refer to Figure 3) that fixes the swing lever 16, and easily rotate the swing lever 16 relative to the rotation shaft 15 by hand, then release the lock of the brake part 25, and place the decorative sheet connecting body 3 is drawn from the reel 5 onto the support plate 8. As shown in the "delivery end state" in Figure 5 (b), the top decorative sheet S is protruded from the front edge of the support plate 8, and the swing lever 16 and the feed rod 18 are operated by hand to make the hook of the feed rod 18 The portion 18a is engaged with the center hole 3a of the second decorative sheet S from the top end. In this way, the feeding mechanism including the swing lever 16 and the feeding rod 18 is adjusted to the "feeding end state" according to the size of the decorative sheet S, and the stopper 25 is locked in this state, and the screw 17 is fastened.

(2) Adjustment of the locking lever

In order to adjust the locking lever 33, the locking of the support block 35 is released. Under the state that the brake part 33b on the upper end of the locking lever 33 abuts against the blocking part 35a of the supporting block 35, manually adjust the front and rear position of the supporting block 35, and adjust the inclination of the locking lever 33, so that the locking of the locking lever 33 The engaging claw 33a engages with the center hole 3a of a predetermined decorative sheet S (the decorative sheet S behind the three decorative sheets S from the decorative sheet S engaged with the hook portion 18a) as shown in FIG. 5 . In this way, as shown in the "delivery end state" in FIG. , the support block 35 is locked.

(3) Position adjustment of the center hole of the decorative sheet relative to the sewing needle position

The position adjustment of the sewing needle 41 and the central hole 3 a of the decorative sheet S is performed by adjusting the position of the support plate 7 relative to the mounting seat 4 . Since the support plate 7 is attached to the mounting base 4 via the front-rear direction guide member, first, the unillustrated lock provided in relation to the guide member is released, and the support plate 7 is manually moved on the mounting base 4 in the front-rear direction. Then, adjust the center of the center hole 3a of the decorative sheet S sent out from the support plate 8, in the state where the joint portion S1 is aligned with the tip of the fixed knife 8b, to be aligned with the center of the sewing needle 41. After completing this adjustment, Lock the support plate 7 and fix it on the mounting base 4 .

(4) Replacement of the guide part

The guide 12 provided on the bracket 11 only needs to be replaced as required so as to match the width of the replaced decorative sheet S. FIG.

Finally, an example of adjustment of each part when the sewn decorative sheet S is changed to a miniature decorative sheet S' will be described. Fig. 10 and Fig. 11 show the occasion of sewing the decorative sheet by taking the extremely small decorative sheet S' with a diameter of 3 mm as an example. Reference numeral 60 denotes a connected body of minute decorative sheets formed by connecting the minute decorative sheets S'. When sewing such a very small decorative sheet S', the following adjustments (1') to (4') are performed in the same manner as when changing the decorative sheet to another size.

(1') Adjustment of feed spacing

The method of adjusting the feeding pitch when sewing the extremely small decorative sheet S' is roughly the same as the above (1) when changing the decorative sheet to other ordinary sizes, but in this case, if the feeding The hook portion 18a of the rod 18 engages with the central hole 61 of the second decorative sheet S' from the front of the decorative sheet connecting body 60, and before the leading decorative sheet S' is completely sent out, the feeding rod 18 The hooking portion 18a interferes with the front end of the slit 8a, so that the joining portion S1' between the first and second decorative sheets S' cannot be positioned at the edge of the fixed knife 8b. Therefore, when sewing the tiny decorative sheet S', as shown in FIG. Adjust its feed spacing.

(2') Adjustment of the locking lever

The adjustment method of the locking lever when sewing the tiny decorative sheet S' is roughly the same as the above (2) when changing the decorative sheet to other ordinary sizes, but because it is a tiny decorative sheet S', it is the same as the locking lever 33. The center hole 61 in which the engaging claw 33a engages is changed to the fifth decorative sheet S' after the decorative sheet S' engaged with the hook portion 18a.

(3') Position adjustment of the center hole of the decorative sheet relative to the position of the sewing needle

The method of adjusting the position of the center hole of the decorative sheet relative to the sewing needle position when attaching the very small decorative sheet S' is roughly the same as the above (3') when changing the decorative sheet to other ordinary sizes. In this case, use the diameter When the decorative sheet S' is 3 mm, the center of the center hole 61 of the decorative sheet S' at the top of the decorative sheet connecting body 60 is at a position 1.5 mm away from the tip of the fixed knife 8b, and the sewing needle 41 descends to this position. Fig. 11 shows the state before the needle holder 32 at the lower end of the needle bar 31 is about to abut against the movable knife 27 after the needle bar 31 descends and the sewing needle 41 penetrates the central hole 61 of the decorative sheet S' of the top end. As can be seen from this figure 11, in order to sew a very small decorative sheet S' with a diameter of 3mm, even if the sewing needle 41 is lowered to a position 1.5mm in front of the tip of the fixed knife 8b, the movable knife will not The plate thickness of the front end part 27a of 27 is thinned, so the sewing needle 41 does not collide with the movable knife 27.

(4') Replacement of the guide part

As in (4) above, even in the case of sewing the decorative sheet S', it is only necessary to replace the guide 12 provided on the bracket 11 so as to be suitable for the width of the replaced decorative sheet S'.

As mentioned above, according to this embodiment, since the central hole 61 of the decorative sheet S' engaged with the hooking portion 18a of the feeding rod 18 can be changed, by connecting the hooking portion 18a and the decorative sheet connecting body 60 from the front If the central hole 61 of the third decorative sheet S' is engaged, the very small decorative sheet S' can be sent out. Moreover, since the tip end 27a with a thin plate thickness is formed on the movable knife 27, even if the distance between the tip of the fixed knife 8b and the sewing needle 41 is approached in order to sew a very small decorative sheet S', the sewing needle will 41 also can not collide with movable knife 27. Thereby, the very small decorative sheet S' can be sewn.

Moreover, in the above-mentioned embodiment, the motor 36 is arranged in an upper position in a relationship to each other, and the swing lever 16 is driven through the link. However, it is also possible to use the output shaft 40 of the electric motor 36 to directly drive the pivot lever 16 . That is, the rotation shaft 15 and the driven lever 20 are not provided, but the motor 36 is fixed to the support plate 7 , and the swing lever 16 is fixed to the output shaft 40 .

Also, in the above-described embodiment, when the feed rod 18 is retreated, the lock by the lock rod 33 is released after the timing in FIG. It is sufficient to release the lock by the lock lever 33 before restarting to move forward). Moreover, when the locking lever 33 is in the locked state before the timing of FIG. 7 (feeding rod 18 restarts to advance), the pushing of the decorative sheet connecting body 3 is performed by the locking rod 33 when the feeding rod 18 retreats, so there is no need to The pressing member 44 is purposely provided.

Again, in the above-described embodiment, the counterclockwise rotation of the driving mechanism of the locking lever 33 is carried out by the biasing force of the torsion spring provided on the pin 39 of the supporting block 35, and the clockwise rotation is performed by the backward feeding. Although the opening edge of the through-hole 18b of the rod 18 is engaged with the lock rod 33, it is not limited thereto, and any configuration may be employed. For example, a spring other than a torsion spring may be used as the spring of the urging member, and an electric, electronic, or mechanical driving device other than a spring may be included in the urging member.

With this embodiment, since the engaging pawl 33a of the locking lever 33 is engaged with the central hole 3a or 61 of the decorative sheet S or S' at the end of sending out the decorative sheet, when the sewing needle 41 is inserted into the sent out After the central hole 3a or 61 of the decorative sheet S or S', the decorative sheet connecting body 3 or 60 will not be pulled out even if an unexpected tensile force is applied to the decorative sheet S or S' before cutting Therefore, the decorative sheet S or S' must be cut at the joining portion S1 or S'1, and the decorative sheet S or S' will not be cut into a skewed shape.

Moreover, since the hooking portion 18a of the feeding rod 18 and the engaging claw 33a of the locking lever 33 are respectively engaged with the central hole 3a or 61 of the decorative sheet S or S' at the end of sending out of the decorative sheet, the decorative sheet is connected. The position of the body 3 or 60 is limited to two locations in its longitudinal direction (feeding direction). Thereby, the position of the decorative sheet S or S' in its width direction can be corrected at least every time the decorative sheet is fed out. In this way, there is no need to provide a guide member for restricting the position of the decorative sheet connecting body 3 or 60 on the support plate 8 .

Also, in the above-mentioned embodiment, the needle gripper 32 abuts against the movable knife 27 when the needle bar 31 descends, but it is not limited to this, and an appropriate part of the needle bar 31 or an appropriate part that is linked with the needle bar 31's descending movement can also be made. The member abuts against the movable knife 27 to push down the movable knife 27. Again, the structure or shape that makes the thickness of the decorative sheet cutting part (27a) of the movable knife 27 thinner than the thickness of the contact part (27b) is not limited to that shown in the figure, as long as the purpose of the present invention can be achieved, any Both structure and shape are acceptable.

Moreover, the ordinary-sized decorative sheet S and the very small decorative sheet S' are not limited to having the needle-through holes 3a, 61 arranged in the center (as the central hole), and may be appropriately off-centered. In this case, on the decorative sheet connecting body 3 or 60, if the shortest diameter portion of the eccentric hole 3a, 61 facing the decorative sheet S or S' is arranged at a position close to the front of the feeding direction, the relative decorative sheet S or S' The longest diameter portion of the eccentric holes 3a, 61 is located near the rear in the feeding direction, and can be arranged so that the longest diameter portion reaches a position corresponding to the blade width of the movable knife 27 . In this way, without changing the width of the blade of the movable knife 27 (the thickness of the thin top end 27a), by appropriately changing the eccentricity of the eccentric holes 3a, 61 of the decorative sheet S or S' (considering the aesthetics of the finished product), Smaller size decorative pieces can be sewn on. For example, if the minimum value of the very small decorative sheet S' provided with the central hole 61 is set as 3 mm in diameter with respect to the thin top end portion 27a of the movable knife 27 or the prescribed thickness, then only the The diameter of the part corresponding to the blade width of the knife 27 (the part near the rear of the feeding direction) can be guaranteed to be 1.5mm, and 1.5mm is guaranteed to be the longest diameter part near the rear of the feeding direction. When the diameter portion is set at 1.0 mm, for example, a decorative sheet of a much smaller size having a diameter of 2.5 mm can be sewn. Even if the thickness of the top end of the movable knife 27 is not reduced, the longest diameter portion can be arranged so as to reach the movable knife 27 by eccentrically making the needle penetration hole 3a of the decorative sheet S as described above. The blade width corresponds to the shape of the position, and a decorative sheet S of a smaller size than conventional ones can be sewn.

Claims (4)

1. Sequin feeder, but comprise feed mechanism and moving knife, and this feed mechanism will be sent from the cosmetic sheet connector that the supporting plate upper surface was drawn and be positioned in to reel with the prescribed distance corresponding with 1 cosmetic sheet size; When descending owing to the sewing action shank that carries out Sewing machines, the Kong Zhonghou of the cosmetic sheet of being sent by described feed mechanism is thrust in suture needle, but should moving knife by by the application of force downwards cosmetic sheet being cut off with shank or with the member butt of shank interlock, it is characterized in that, make than with described shank or with the thin thickness at the butt position of the described member butt of shank interlock but the cosmetic sheet on the described moving knife is cut off thickness with the position.

2. Sequin feeder as claimed in claim 1, it is characterized in that, but by the described moving knife of attenuate and the thickness needle downing position counterpart, form described cosmetic sheet cut-out and use the position, when but this moving knife is in described shank or during with the posture before the described member butt of this shank interlock, but but the top that described cosmetic sheet that should moving knife reduced thickness is cut off with the position is positioned at the not below of the topmost position at the described butt position of attenuate of this moving knife thickness.

3. Sequin feeder as claimed in claim 1 is characterized in that, but on described moving knife, but the described cosmetic sheet cut-out of reduced thickness is not formed on the below in the described butt position of attenuate with the position than this moving knife thickness.

4. Sequin feeder as claimed in claim 1, it is characterized in that, its constitute described feed mechanism by feeding rod advance and backward movement is sent cosmetic sheet, the hole of at least 1 cosmetic sheet of the described cosmetic sheet connector on the top of this feeding rod and the described supporting plate is engaged, before making this feeding rod, come in to carry out the feeding action, when this feeding rod was advanced, the top of feeding rod can be changed according to the size of this cosmetic sheet with the position cosmetic sheet that the hole of described cosmetic sheet should engage.

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