KR20000029458A - Threading device in sewing machine for embroidery - Google Patents

Abstract

PURPOSE: A method and apparatus is provided which solves the problems of conventional embroidery machinery, and produce the improvements in operating rate and productivity by automatically processing, when changing the colored thread or when the thread is broken, without requiring manual work, thus shortening the stoppage time required. CONSTITUTION: A threading device(7) in an embroidery machinery is comprised of a thread gripping member(31) for gripping the end portion of a thread hanging from a thread let-off tube(28), a thread tensioning mechanism(25) for leading the thread gripped by the thread gripping member to a position close to a needle and applying the stretched thread on a balance mechanism(4), and a threading mechanism(6) for guiding the thread into the needle hole. Because the threading mechanism(6) is comprised of a thread pull-out mechanism and an air nozzle(3), the threading precis ion is further enhanced, and the threading mechanism is simplified. Furthermore by deploying a thread push-down mechanism for pushing down both ends of the thread inserted into the thread insertion hole formed in a guide member(6) of the threading mechanism(7) along the side surface of the guide member, the threading precis ion is enhanced still more.

Description

Thread guide device of sewing machine for embroidery {THREADING DEVICE IN SEWING MACHINE FOR EMBROIDERY}

Conventionally, in the embroidery machine, the process of changing a color thread, cutting a thread, etc. was performed by one hand.

By the way, when changing the color thread or processing when the thread is cut, the sewing machine must be stopped, and in particular, when changing the color thread, one head sewing machine usually has a number of heads. In many cases, it is necessary to perform a thread-threading operation for each of the sewing heads arranged about 30 heads, and thus, the downtime of the sewing machine may take several hours, and the operation rate and productivity of the sewing machine may be reduced. Was doing.

The present invention relates to a sewing machine, in particular, a process for replacing a colored thread (in this specification, sometimes referred to simply as "thread" or "upper thread") or when the thread is cut. It relates to an embroidery sewing machine that can be performed automatically without going through one hand.

1 is a front view showing a first embodiment of a thread supply apparatus of a sewing machine for embroidery of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a sectional view taken along line A-A of FIG.

Fig. 5 is a perspective view showing the thread retainer of the first embodiment of the thread supply apparatus of the sewing machine for embroidery of the present invention, Fig. 6 shows a thread release mechanism, (a) is a side view thereof, and (b) is a 7 is a front view, FIG. 7 shows a thread length adjusting mechanism, (a) is a side view thereof, (b) is a plan view thereof, FIG. 8 is a real feeding mechanism, (a) is a side view thereof, (b) is its front view (C) is a perspective view.

Fig. 9 is a front view showing a modification of the first embodiment of the thread feeding device of the sewing machine for embroidery of the present invention, Fig. 10 is a side view thereof, Fig. 11 is a plan view of the main part thereof, and Fig. 12 is a perspective view of the main part thereof.

Fig. 13 is a side sectional view showing a thread retainer of a modification of the first embodiment of the thread supply apparatus of the embroidery machine of the present invention.

Fig. 14 shows a first embodiment of a thread guiding apparatus of the sewing machine for embroidery of the present invention, (a) is a side view thereof, and (b) is a front view thereof.

15 is a front view of the mounting mechanism of the thread guiding apparatus of the embroidery machine of the present invention, FIG. 16 is a side view of the mounting mechanism, and FIG. 17 shows the main part of the mounting mechanism, and (a) is a plan view thereof. (b) is a side view thereof, (c) is a front view thereof, FIG. 18 shows a thread guide mechanism, (a) is a side view thereof, (b) is a front view thereof, (c) is a plan view thereof, and FIG. 19 20 is an explanatory view showing an operating state of the thread lowering mechanism of the thread guide mechanism, FIG. 20 is a perspective view of a main part of the thread guide mechanism, FIG. 21 shows a thread extraction mechanism, (a) is a plan view thereof, (b) is The side view, (c) is the exploded perspective view, FIG. 22 shows the thread cutting mechanism, (a) is the top view, (b) is the front sectional drawing, FIG. 23 shows the cutting chamber collection mechanism, (a ) Is the front view, (b) is the top view, FIG. 24 shows the sensor which detects the state of a thread, (a) is the top view, and (b) is the perspective view.

Fig. 25 is a front view showing the second embodiment of the embroidery machine of the present invention.

Fig. 26 shows the thread retaining member of the second embodiment of the thread feeder of the embroidery machine of the present invention, (a) is a front view thereof, (b) is a side view thereof, (c) is a plan view thereof, and Fig. 27 is a 28 is a side view of the thread supply apparatus of the embroidery machine of the present invention, and FIG. 28 shows a modification of the second embodiment of the thread supply apparatus of the embroidery machine of the present invention, (a) is a front view thereof, and (b) is a side view thereof. 29 is a perspective view thereof, FIG. 30 is a front view of the thread adjusting mechanism, FIG. 31 is a sectional view of an essential part of the pipe member, and FIG. 32 is a sectional view of an essential part of the thread adjusting mechanism.

Fig. 33 is a front view of a second embodiment of a thread guide device of an embroidery machine of the present invention, and Fig. 34 is a side view thereof.

35 shows a modification of the thread-fitting member of the mounting mechanism, (a) is a front view thereof, (b) is a plan view thereof, (c) is a side view thereof, FIG. 36 is a perspective view thereof, and FIG. 37 Is a perspective view of a thread extraction mechanism, FIG. 38 is a perspective view of a modification of the thread extraction mechanism, FIG. 39 shows a thread recovery mechanism, (a) is a plan view thereof, (b) is a front view thereof, and FIG. 40 is a perspective view thereof. .

(Initiation of invention)

The present invention solves the problems that the conventional sewing machine for sewing has, and it is possible to automatically perform the processing when changing the color thread or when the thread is cut, without using one hand, and at the same time required for it. It is an object of the present invention to provide a embroidery machine for improving the operating rate and productivity of the sewing machine.

In order to achieve the above object, the thread guide device of the sewing machine for embroidery of the present invention includes a thread fitting member for fitting an end portion of a thread draped downward from the thread delivery pipe, and the thread inserted by the thread fitting member of the needle. In addition to guiding to the vicinity of the position, it is characterized in that it consists of a thread mounting mechanism for guiding the thread laid over the ceiling mechanism, and a thread guide mechanism for guiding the thread to the needle hole.

According to the thread guide device of the sewing machine for embroidery of the present invention, the processing when changing the color thread or when the thread is cut can be automatically performed without one hand, and the time required for it can be shortened. Thereby, the operation rate and productivity of a sewing machine can be improved.

Moreover, according to the thread guide apparatus of this embroidery machine, the precision of thread guide can be improved.

In this case, by configuring the thread guide mechanism with a thread extraction mechanism, an air nozzle, etc., the precision of the thread guide can be further improved, and the thread guide mechanism can be simplified.

Moreover, by providing the thread pushing-down mechanism which pushes both ends of the thread penetrated by the thread through-hole formed in the guide member of the thread guide mechanism along the side surface of the guide member, the precision of thread guide can be improved more.

(The best form to carry out invention)

In the following, an embodiment of an embroidery machine of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, the embroidery machine includes a thread guide device 7 including a plurality of sewing machine heads 1, a thread supply device 2, a mounting mechanism 3, and a thread guide mechanism 6. ), And a main part of the auxiliary mechanism 5 such as the flat mechanism 4 and the cutting chamber recovery mechanism.

In addition, the drawing of this embodiment shows one head of the sewing machine head provided with about 30 heads, in many cases about several heads in one embroidery machine. In addition to using the same configuration as that of the embodiment in the sewing machine heads other than those shown in the drawings, each of the sewing machine heads can be simultaneously driven by a variety of common driving sources, and if necessary, a common driving source and each sewing machine. By providing a clutch between the head or by providing an independent drive source for each sewing machine head, each sewing machine head can be driven independently, but these mechanisms are not basically different from conventionally known embroidery sewing machines.

In addition, it is preferable that the thread supply device 2 of the sewing machine head of the embroidery machine of the present embodiment, the auxiliary mechanism 5 such as the cutting thread recovery mechanism, and the thread guide device 7 are provided with all of them. In some cases, however, some of the devices may be replaced or omitted with other mechanisms that achieve the same effect.

In addition, in this embodiment, although the air cylinder, solenoid, etc. which are used as a drive source of various drive mechanisms are not described each time, it can replace with other suitable drive sources as needed.

In addition, in this embodiment, although the connection of various drive mechanisms and drive sources is performed by connection mechanisms, such as a link mechanism, a lever mechanism, and a wire mechanism, this connection mechanism is not described every time, but is required. Therefore, it can substitute by suitable connection mechanism other than an Example.

In addition, in this embodiment, any high pressure air generator other than a compressor may be used as the high pressure air source used for feeding the thread toward the needle, the high pressure air source used for driving the air cylinder, or the like. .

This also applies to the case of the other examples described below.

1 to 8 show a first embodiment of a thread supply device 2 provided on an upper portion of a sewing machine head 1 of an embroidery machine.

The thread supply device 2 corresponds to the number of bobbin accommodating portions 22 into which a plurality of colored bobbins 21 can be accommodated, and the number of receivable bobbins 21 that are installed integrally with the bobbin accommodating portions 22. A semi-cylindrical body provided with a thread tension adjusting mechanism 25, a thread length adjusting mechanism 27 for holding the thread 11 discharged toward the needle 10 at a predetermined length, and a thread feeding mechanism 28 installed therein. The thread adjusting mechanism 24 holding the 24a and the thread feeding mechanism 28 corresponding to the required bobbin 21 are threaded upward with a predetermined needle 10 to guide the thread. And a thread selection mechanism 29 to be selectively positioned at.

In the present embodiment, the bobbin housing portion 22 and the thread adjusting mechanism 24 that are integrally provided with the bobbin housing portion 22 are unitized and mounted on the sewing machine head 1 so as to be detachable.

The bobbin storage portion 22 is configured to accommodate 12 bobbins 21 in total, 18 horizontally at the lower end and a total of 18 bobbins inclined slightly toward the front, for example, and the bobbin storage portion 22 has a bottom surface thereof. While installing the spindle 22a for inserting and supporting the bobbin 21 thereon, a seal holder 23 for drawing out the thread 11 of each bobbin 21 so as not to be entangled is provided at the upper portion thereof. A total of 18 threads 11 are drawn out at intervals from the thread retaining member 23 and fed to the mounting force adjusting mechanism 25 of the thread adjusting mechanism 24 integrally installed at the lower part of the bobbin housing 22. do.

The thread holding part 23 bobbins the oscillation piece 23a provided with the thread through-hole 23b for pulling out the thread 11 in the oscillation piece support shaft 23c provided upright between each bobbin 21 so that it may not become entangled. The oscillation piece is provided by swinging above the 21 and fitting the cut portion 23d formed at the base of the oscillation piece 23a with the projection 23e protruding from the oscillation piece support shaft 23c. It is comprised so that 23a may be fixed to a predetermined position.

By providing the swinging piece 23a so as to be swingable, the bobbin 21 can be easily attached to or detached from the bobbin housing 22.

In addition, the upper end of the swinging piece supporting shaft 23c is provided with an axial groove 23f, and the upper end of the groove 23f is slightly expanded, so that the base of the swinging piece 23a is the swinging piece. Do not escape from the support shaft 23c.

The mounting force adjusting mechanism 25 includes three mounting force adjusting members 25a for each thread 11 in each bobbin 21 provided on the outer circumferential surface of the main body 24a which is a semi-cylindrical shape of the thread adjusting mechanism 24, And 25b and 25c.

In one of the mounting force adjusting members 25c, a tension sensor 25d for measuring the tension of the thread 11 is provided so that thread breakage of the thread 11 can be detected.

The signal from the tension sensor 25d is an electrical signal, which is obtained from an electrical contact (not shown) provided in the thread adjusting mechanism 24 through an electrical circuit (not shown) provided with an electrical contact provided in the sewing machine head 1. It is transmitted to the control unit of the sewing machine for embroidery, and controls the driving of the sewing machine for sewing, and lights up a display lamp (not shown) indicating the state of the upper thread and the lower thread installed in the sewing machine head 1 or the like. Notify the thread breaks.

In addition to the display lamp, a display device such as a liquid crystal display panel for displaying the state of the embroidery machine to an operator and an alarm device such as a rich person can be provided at an appropriate position of the embroidery machine.

Moreover, in order to prevent large resistance from acting on the thread 11 when sending the thread 11 toward the needle 10, the mounting which releases hold | maintain of the thread 11 by the mounting force adjustment member 25b. Install the power release mechanism (26).

This mounting force release mechanism 26 is mounted via the operating shaft 26c by the mounting force release plate 26b which is rocked and operated by the solenoid 26a provided on the sewing machine head 1 side as shown in FIG. Compression operation of the spring of the force adjustment member (25b), and is configured to release the holding of the seal 11 by the mounting force adjustment member (25b).

The thread length adjusting mechanism 27 provided below the thread tension adjusting mechanism 25 is for holding the thread 11 sent out toward the needle 10 to a predetermined length, and the thread length adjusting mechanism 27 is provided. The thread 11 held by the thread 11 is sent out by releasing the thread length adjusting mechanism 27 when the tip of the thread 11 is guided to the vicinity of the needle 10 by the thread guide device 7, and the embroidery work is carried out. The thread 11 of a predetermined length needed to start the process is penetrated by the needle 10.

As shown in FIG. 7, this thread length adjustment mechanism 27 protrudes the thread length adjustment piece 27c which slides through the wire 27a and the lever 27b by a solenoid (not shown). ) Is held at a predetermined length, and the retained yarn 11 is fed out by retracting the yarn length adjusting piece 27c.

In this case, the tip of the thread length adjusting piece 27c is formed in a concave shape in order to easily hold the thread 11.

The thread dispensing mechanism 28 provided below the thread length adjusting mechanism 27 on the outer circumferential surface of the main body 24a which is a semi-cylindrical shape of the thread adjusting mechanism 24 smoothly feeds the thread 11 toward the needle 10. As shown in FIG. 8, the chamber 11 is connected to the actual delivery pipe 28a for guiding the seal 11 above the thread guide device 7 and a high pressure air source (not shown). An air nozzle 28b or the like for feeding the yarn 11 toward the yarn guide device 7 is retained.

In this case, the air nozzle 28b has an opening end portion of the air nozzle 28b near the thread guide position, i.e., the upper portion of the air discharge pipe 28a located above the thread guide position 7. The thread guide device 7 is fixed so that the thread guide device 7 can be accurately inserted into the thread 11 which is extended downward from the threaded discharge pipe 28a positioned above the thread guide device 7. ), And removes the actual delivery pipe (28a) located above the c) so that the actual delivery pipe (28a) is warped about the swing shaft (28d) by the force of the twisted spring (28c). In addition, the threaded delivery pipe 28a located above the thread guide device 7 is brought into contact with the posture holding piece 28e fixed to the sewing machine head 1, or by a suitable driving mechanism (not shown). By operating, it raises against the applied force of the twisted spring 28c.

The thread selection mechanism 29 is a thread guide device 7 for guiding the thread delivery pipe 28a of the thread delivery mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10. It is selectively positioned upward, connected to the drive shaft (not shown) and the support shaft (29a) provided on the sewing machine head (1) for mounting the thread adjusting mechanism (24) so that the swing is free through the bottom plate (24b) The yaw fits into the oscillating body 29b oscillated and driven by the link 29c as the oscillation shaft, and the through hole 24c bored in the bottom plate 24b of the thread adjusting mechanism 24. It consists of the pin 29d which protruded in the oscillation body 29b which oscillates and drives the thread control mechanism 24 with the fuselage 29b.

In this case, the thread dispensing pipe 28a of the thread dispensing mechanism 28 corresponding to the required bobbin 21 is accurately positioned above the thread guide device 7 for guiding the thread with a predetermined needle 10. In order to achieve this, a positioning roller 29h is provided at the tip of the swinging body 29g, which is swing-driven by the support shaft 29f as the swinging shaft by a link 29e connected to a drive source (not shown). The 29h is fitted with the gear 24d provided around the bottom plate 24b of the thread adjusting mechanism 24 in accordance with the angle of the thread sending pipe 28a of the thread sending mechanism 28.

In this case, the thread selection mechanism 29 is controlled by the control unit of the sewing machine for embroidery, and the type (color) of each bobbin 21 stored in the bobbin storage unit 22 is stored in advance in the control unit, Allows multiple color chamber selections to be performed automatically.

In addition, in a proper position of the outer circumferential surface of the main body 24a, which is a semi-cylindrical shape of the thread adjusting mechanism 24, threaded through holes are formed at approximately equal intervals so as to keep the threads 11 in each bobbin 21 from being entangled. It is preferable to provide one seal holder 20a, 20b, 20c, 20d, and 20e.

In addition, the mounting force adjustment mechanism 25 and the actual delivery mechanism 28 constituting the thread adjustment mechanism 24 correspond to the number of bobbins 21 that can be accommodated in the bobbin storage portion 22, that is, In this embodiment, 18 sets are provided on the outer circumferential surface of the main body 24a, which is a semi-cylindrical shape of the thread adjusting mechanism 24, but the mounting force release mechanism 26, the thread length adjusting mechanism 27, and the thread feeding mechanism The air nozzle 28b and the posture retaining piece 28e of (28) are both provided on the sewing machine head 1 side, and the operation or the predetermined position is one of 18 sets of these mechanisms at a predetermined position. To co-operate with one another, that is, to be shared by these 18 articles.

Moreover, the bobbin storage part 22 and the thread adjusting mechanism 24 which are integrally provided with this are unitized (henceforth a "unit."), Preferably, the plurality of heads of the sewing machine head 1 Prepare a ship. For this reason, when changing a color chamber, it can change for every unit and can shorten the time required for replacing a color chamber. For example, if the unit of this embodiment is prepared at twice the number of heads of the sewing machine head, the color yarn of up to 36 colors can be replaced in a short time. In this case, the type (color) of each bobbin 21 stored in the bobbin storage portion 22 is stored in the control section of the embroidery machine in advance so that only a unit is replaced and a large number of color threads are automatically changed. You can do it.

In addition, in this embodiment, the bobbin storage part 22 and the thread adjusting mechanism 24 which are installed integrally with this are comprised as a unit, and it attaches to the sewing machine head 1 so that attachment or detachment is possible, It may be fixedly mounted to the sewing machine head (1).

In addition, in the present embodiment, the thread guide device 7 which guides the thread of the thread dispensing pipe 28a of the thread dispensing mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10 is used. In order to selectively position upward, the thread selection mechanism 29 causes the thread adjusting mechanism 24 to oscillate with the support shaft 29a as the swing shaft. However, as the thread select mechanism, a mechanism capable of sliding in a horizontal plane is provided. May be used.

Next, the modification of the 1st Example of the thread feeder 2 provided in the upper part of the sewing machine head 1 of the embroidery machine is shown in FIGS.

The thread supply device 2 corresponds to the number of bobbin accommodating portions 22 into which a plurality of colored bobbins 21 can be accommodated, and the number of receivable bobbins 21 that are installed integrally with the bobbin accommodating portions 22. The mounting force adjusting mechanism 25, the mounting force adjusting mechanism 25 for maintaining the thread 11 discharged toward the needle 10 at a predetermined length, and the thread 11 discharged toward the needle 10; A thread adjusting mechanism 24 for holding a semi-cylindrical body 24a provided with a thread length adjusting mechanism (not shown, see the first embodiment described above) and a thread discharging mechanism 28 for maintaining a predetermined length; It consists of the thread selection mechanism 29 which selectively positions the thread | feeding-out mechanism 28 corresponding to the required bobbin 21 above the thread guide apparatus 7 which guides a thread with the predetermined needle 10. As shown in FIG.

In the present embodiment, the mounting force adjusting mechanism provided corresponding to the upper half of the bobbin housing portion 22 and the thread adjusting mechanism 24 which is installed integrally with this, that is, the number of the bobbins 21 that can be accommodated ( As shown in detail in Figs. 9 and 12, the parts are divided into two parts to the left and right, and unitized (hereinafter, referred to as "units 2A and 2B"). This is a thread selecting mechanism provided in the sewing machine head 1. (29) is attached so that attachment and detachment are possible via the bottom plate 24b of the thread adjustment mechanism 24. As shown in FIG.

The bobbin storage unit 22 is configured to store 18 bobbins 21 in total, nine left and right, for example, inclined slightly forward from the upper end, and the bobbin 21 is inserted into the bobbin storage unit 22. , While setting up the supporting spindle 22a, the bobbin guide 22b suitable for the bobbin 21 used around the spindle 22a is installed, and the thread 1 of each bobbin 21 is provided at the bottom. ), A felt 22c for drawing out is laid so as not to get entangled.

In the spindle 22a, a thread holding member 23 is provided, and a total of 18 threads 11 are drawn out at intervals from the thread holding member 23, and the thread adjusting unit is integrally attached to the lower portion of the bobbin storage unit 22. Feed into the mounting force adjustment mechanism 25 of the mechanism (24).

The seal retainer 23 includes a guide plate 23p provided at an upper end of the spindle 22a, a guide tube 23q made of ceramic provided at an upper end opening of the spindle 22a, and a hollow pipe path 23r of the spindle 22a. ) And a pipe member 23s communicating with the hollow pipe passage 23r, and the seal 11 of each bobbin 21 is passed through the hollow pipe passage 23r and the pipe member 23s of the spindle 22a. , To be loaded into the mounting force adjusting mechanism (25).

In this case, it is possible to easily hold the seal 11 derived from the pipe member 23s by varying the amount of protrusion of the tip of the pipe member 23s between the adjacent pipe members 23s. .

In addition, the operation | work which makes the thread 11 penetrate into the hollow pipe path 23r and the pipe member 23s of the spindle 22a sucks high pressure air flow with the thread 11 from the opening of the upper end of the guide pipe 23q. It can be carried out easily.

The mounting force adjusting mechanism 25 includes three mounting force adjusting members 25a for each thread 11 in each bobbin 21 provided on the outer circumferential surface of the main body 24a which is a semi-cylindrical shape of the thread adjusting mechanism 24, And 25b and 25c.

In one of the mounting force adjusting members 25c, a tension sensor 25d for measuring the tension of the thread 11 is provided so that thread breakage of the thread 11 can be detected.

The signal from the tension sensor 25d is an electrical signal, which is obtained from an electrical contact (not shown) provided in the thread adjusting mechanism 24 through an electrical circuit (not shown) provided with an electrical contact provided in the sewing machine head 1. The thread 11 is transmitted to the control unit of the sewing machine for sewing, controlling the driving of the sewing machine for sewing, and lighting a display lamp (not shown) indicating the state of the upper thread and the lower thread installed in the sewing machine head 1 or the like. Notify the thread breaks.

In addition to the display lamp, a display device such as a liquid crystal display panel for displaying the state of the embroidery machine to an operator and an alarm device such as a rich person can be provided at an appropriate position of the embroidery machine.

Moreover, in order to prevent a big resistance from acting on the thread 11 when sending the thread 11 toward the needle 10, the mounting which releases the holding | maintenance of the thread 11 by the mounting force adjustment member 25b. An output release mechanism (not shown, see the first embodiment described above) is provided.

The thread dispensing mechanism 28 provided on the outer circumferential surface of the bottom plate 24b, which is a semi-cylindrical shape of the thread adjusting mechanism 24, is for smoothly dispensing the thread 11 toward the needle 10. It is connected to the actual delivery pipe 28a which guides upward of the guide apparatus 7, and high pressure air source (not shown), and the air for sending out the seal 11 toward the thread guide apparatus 7 by high pressure air flow. A nozzle (not shown, see the first embodiment described above) and the like.

As in the first embodiment, the air nozzle has an open end of the air nozzle near the thread guide position, that is, the upper part of the thread discharge pipe 28a located above the thread guide device 7 is opened. It is fixed to be attached, and furthermore, it can be configured to remove the threaded delivery pipe (28a) in the upper position of the thread guide device (7) and to embroider.

In this case, at least, the thread dispensing pipe 28a at the position where the embroidery is to be embroidered is operated by a suitable driving mechanism (not shown) to raise it, and when the embroidery is finished, it is immediately warped and the adjacent thread guide device ( It is preferable that the thread guide device 7 can pinch the thread 11 extended from the threaded discharge pipe 28a located above 7).

The thread selection mechanism 29 is a thread guide device 7 for guiding the thread delivery pipe 28a of the thread delivery mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10. It is selectively positioned in the upper direction, and the support shaft (29a) provided on the sewing machine head (1) and the drive source (not shown) for mounting the thread adjusting mechanism 24 so as to swing freely through the bottom plate (24b). Fitted to the oscillating body 29b oscillated by the support shaft 29a as the oscillation shaft, and the through hole 24c bored in the bottom plate 24b of the thread adjusting mechanism 24, It consists of the pin 29d etc. which protruded to the oscillation body 29b which oscillates and drives the thread control mechanism 24 with the oscillation body 29b.

In this case, the thread dispensing pipe 28a of the thread dispensing mechanism 28 corresponding to the required bobbin 21 is accurately positioned above the thread guide device 7 for guiding the thread with a predetermined needle 10. In order to achieve this, a positioning roller 29h is provided at the tip of the swinging body 29g which is rocked and driven by the support shaft 29f as the swinging shaft by a link 29e connected to a drive source (not shown). 29h is fitted to the gear 24d provided in accordance with the angle of the actual delivery pipe 28a of the actual delivery mechanism 28 around the bottom plate 24b of the actual thread adjusting mechanism 24.

In this case, the thread selection mechanism 29 is controlled by the control unit of the sewing machine for embroidery, and the control unit stores in advance the type (color) of each bobbin 21 housed in the bobbin storage unit 22, Allows multiple color chamber selections to be performed automatically.

In addition, in order to keep the thread 11 from each bobbin 21 from being entangled in the appropriate position of the outer peripheral surface of the main body 24a which is the semicylindrical shape of the thread | adjustment mechanism 24, threaded through-holes are formed in substantially equal intervals. It is preferable to provide real holding bodies 20a, 20b, 20c, and 20d.

In addition, the mounting force adjustment mechanism 25 and the actual delivery mechanism 28 constituting the thread adjustment mechanism 24 correspond to the number of bobbins 21 that can be accommodated in the bobbin storage portion 22, that is, In the present embodiment, 18 sets are provided on the outer peripheral surfaces of the main body 24a and the bottom plate 24b, which are semi-cylindrical shapes of the thread adjusting mechanism 24, but the mounting force release mechanism, the thread length adjusting mechanism, and the thread feeding mechanism The air nozzles 28b and the like of (28) are all provided on the sewing machine head 1 side, so that any one of the 18 sets of these mechanisms is located at a predetermined position or cooperates with being at a predetermined position, that is, We shall share in these 18 articles.

In addition, the units 2A and 2B configured by dividing the bobbin housing portion 22 and the thread adjusting mechanism 24 integrally provided with the bobbin storage portion 22 into two sides from each other preferably have a number of heads of the sewing machine head 1. Prepare multiple boats. As a result, when the color chamber is replaced, the time required for the replacement of the color chamber can be shortened by replacing the unit 2A or the unit 2B. For example, if the units 2A and 2B of the present embodiment are prepared at twice the number of heads of the sewing machine head, up to 36 color threads can be replaced in a short time. In this case, the control unit of the embroidery machine keeps the type (color) of each bobbin 21 stored in the bobbin storage unit 22 in advance, so that only the unit is replaced and a large number of color threads are automatically changed. You can do it.

In addition, in this embodiment, the bobbin storage part 22 and the thread adjusting mechanism 24 which are integrally installed with this are comprised as a unit, and this is attached to the sewing machine head 1 so that attachment or detachment is possible, The head 1 can also be fixedly mounted.

In addition, in the present embodiment, the thread guide device 7 which guides the thread of the thread dispensing pipe 28a of the thread dispensing mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10 is used. By selectively positioning upward, the thread selection mechanism 29 causes the thread adjustment mechanism 24 to swing and drive the support shaft 29a as the swing shaft. However, as a thread select mechanism, a mechanism capable of sliding in a horizontal plane is provided. It can also be used.

In the lower part of the thread supply device 2 of the sewing machine head 1, as shown in FIGS. 14 to 24, a thread guide device 7 composed of a mounting mechanism 3 and a thread guide mechanism 6 is provided.

As shown in Figs. 14 to 17, the mounting mechanism 3 guides the end portion of the thread 11, which has a predetermined length, extending from the actual delivery pipe 28a of the thread supply device 2 to a position near the needle 10. Figs. And the mounting piece 31, the lever 32 provided with the thread fitting member 31 at the tip end, the swinging piece 33 supporting the base end of the lever 32 so as to be freely swingable, and the mounting. A guide tube 34 of the swinging piece 33 provided in the snow-body main body 30 in a substantially vertical direction, a belt 35 for elevating the swinging piece 33 along the guide pipe 34, and a lever 32. The rack 36 provided in the vicinity of the lowered position of the swinging piece 33 which engages the pinion 32a fixed to the base end of the lever 32 and regulates the swinging angle of the lever 32, and the roller installed at the intermediate position of the lever 32 ( 32b), a guide groove 37 formed in the up and down direction in the mounting mechanism main body 30 which regulates the swing angle of the lever 32, a drive mechanism 38 for driving the belt 35, and the like. It consists of a.

In this way, the mounting mechanism 3 can be miniaturized by configuring the mounting mechanism 3 with the lever 32 that swings, the swinging piece 33 that moves up and down, and in particular, the thread-fitting member 31. The amount of protrusion toward the front of the sewing machine head 1 can be reduced.

The mounting mechanism 3 drives the belt 35 so that the thread-fitting member 31 is moved from the stand-by position of the intermediate portion to the highest position in which the end of the thread 11 hangs on the threaded discharge pipe 28a. When moving, the shoe member 31e is swingably provided on the bracket 1b protruding from the sewing machine head 1 so that the thread fitting member 31 can automatically fit the end of the thread 11, The shoe member 31e is in contact with the roller 31f provided at the tip of the operating piece 31d protruding from the movable fitting piece 31a of the thread-fitting member 31, and the movable fitting piece 31a is brought into contact with the spring member 31c. And the shoe member 31e passes through the end of the thread 11, which extends from the actual delivery pipe 28a, between the movable fitting piece 31a and the fixed fitting piece 31b. Is swung by a drive mechanism (not shown) to release the contact between the shoe member 31e and the operation piece 31d, and the movable fitting piece 31a is returned. It is comprised so that the thread 11 which may penetrate between the copper fitting piece 31a and the fixed fitting piece 31b may be inserted.

Then, by driving the belt 35 in this state, the thread-fitting member 31 is moved from the highest rising position to the lowest position, and the thread 11 guided to the vicinity of the needle 10 is moved by the needle 10. After guiding to the invasion 10a and guiding the thread, the operation member is swingable in the lower portion of the mounting mechanism main body 30 so as to release the end of the thread 11 in which the thread fitting member 31 is fitted. 31g is provided, and by this operation member 31g, the roller 31f provided at the tip of the operating piece 31d protruding from the movable fitting piece 31a of the thread-fitting member 31 is pressed. And the movable fitting piece 31a is opened in response to the force applied by the spring member 31c.

Moreover, the drive mechanism 38 is comprised so that a rotating motor 38a of the belt 35 can be selectively driven by the motor (not shown) to the positive, reverse, and both directions.

In addition, the mounting mechanism 3 is provided with a fixed position of the lifting path of the sliding piece 33, for example, a standby position near the intermediate position of the thread fitting member 31, and the thread fitting member 31 in the actual delivery pipe 28a. A limit switch (not shown) is provided at the highest rising position for fitting the end of the thread 11 slack from) and the lowest descending position for thread guidance, so that the position of the sliding piece 33 can be detected. In addition, the installation position of the limit switch can be adjusted appropriately.

As shown in FIG. 14 to FIG. 17, the thread 11 installed between the threaded delivery pipe 28a of the thread supply device 2 and the vicinity of the needle 10 by the mounting mechanism 3 is flat. It spans the flat 41 and the flat 42 of the mechanism 4.

In addition, in this embodiment, three sets of the flat mechanism 4 and the needle 10 corresponding to the flat mechanism 4 are provided, and the frame 1c on which the needles 10 are provided is swinged in a horizontal plane. Although it is comprised so that the tide of the needle 10 attached to the frame 1c may increase or decrease, the frame 1c may be comprised so that it may slide in a horizontal plane.

In the cloth flat 41, the cut part 41b which inserts the threading hole 41a in the front end and the drive pin 41c of the cloth flat 41 is inserted in the base end is formed.

Bucheonpyeong 42 has a ring-shaped thread hook hole 42a, a lever 42b provided with thread hook hole 42a at the tip end, and a sliding piece 42c for supporting the lever 42b freely of sliding. And the guide pipe 42d of the sliding piece 42c provided in the mounting mechanism main body 30 in the up and down direction, and the sliding piece 42c by the thread fitting member 31 of the mounting mechanism 3, The magnet piece 42e for raising and lowering along the guide pipe 34 in accordance with the lifting and lowering of the thread-fitting member 31 and the roller 42f provided at the other end of the lever 42b are brought into contact with each other to adjust the position of the thread-hanging hole 42a. The shoe member 42g to restrict | regulate, the spring member 42h etc. which apply a force so that the roller 42f provided in the other end of the lever 42b may contact the shoe member 42g.

The sub-flat 42 of the flat mechanism 4 drives the belt of the mounting mechanism 3 so that the thread-fitting member 31 extends from the waiting position of the middle part to the discharge pipe 28a of the thread ( 11), the end portion of the end portion 11 is moved to the uppermost lifted position, whereby the sliding piece 42c is also moved to the uppermost lifted position by the thread fitting member 31, and the thread hanged from the threaded discharge pipe 28a to the threaded hole 42a. The end of 11 is penetrated.

Then, when the thread 11 is inserted by the thread fitting member 31 positioned directly below the thread hook hole 42a, and the belt 35 of the mounting mechanism 3 is driven in this state, the thread is fitted. The member 31 moves from the highest position to the lowest position. At this time, the sliding piece 42c is also lowered by being adsorbed by the thread fitting member 31, but further lowering of the sliding piece 42c is prevented by the stopper member 42i provided at an approximately intermediate position. Adsorption with (31) is released and it stops at this position, ie, the standby position of bottom dead center.

In addition, as the sliding piece 42c descends, the lever 42b provided at the distal end of the thread-hanging hole 42a through which the thread 11 penetrates is 42 g of the shoe member 42g. By sliding in contact with the spring member 42h, the seal 11 slides horizontally in accordance with the shape of the shoe member 42g in response to the force applied by the spring member 42h, whereby the seal 11 is flattened while the sliding piece 42c is lowered. It passes through the threading hole 41a formed in the front-end | tip of 41.

In addition, in order to prevent the thread 11 which has passed through from the thread-hanging hole 41a of the cloth flat 41, it is preferable to provide for preventing escape such as a trap.

As a result, the thread 11 extends through the thread hanger hole 41a of the cloth flat 41 and the thread hanger hole 42a of the bucheon flat 42 and is embroidered in a state of being held in the required zigzag shape. do.

In addition, at the time of embroidery, the cloth 41 is reciprocally driven by a drive mechanism similar to that of a conventional sewing machine, while the bucheon flat 42 is maintained at the standby position of the bottom dead center.

18 to 21, the thread guide mechanism 6 moves the thread 11 guided to the position near the needle 10 by the mounting mechanism 3 to the infiltration 10a of the needle 10. In order to guide and guide the thread, the thread 11 sandwiched by the thread extracting mechanism 61, the drive mechanism 62 of the thread extracting mechanism 61, and the thread fitting member 31 of the mounting mechanism 3 is used. ), The air nozzle 63 provided in the thread fitting member 31 for feeding the thread toward the thread extraction mechanism 61 and the thread 11 penetrated through the thread extraction mechanism 61 by the thread extraction mechanism 61. It consists of the thread unwinding mechanism 64 provided in the thread unwinding mechanism 61 for ensuring hold | maintaining.

As shown in detail in FIGS. 19 to 21, the thread extracting mechanism 61 is provided with a hook member 61a having a tip-shaped hook shape, and through spacers 61f and 61f on both sides of the hook member 61a. A holding member 61g for holding the installed guide members 61b and 61b, and a tip member composed of a hook member 61a, a guide member 61b, 61b, and a spacer 61f, 61f. Is done.

The guide members 61b and 61b are bent outwards from each other to guide the hook member 61a to the center of the needle 10, that is, to the position of the invasion 10a when the needle 10 is in contact with the needle 10. It consists of a leaf spring formed in the shape which abuts on the side surface of the hook member 61a at the base part of 61e, 61e, and the through-hole 61c is formed in the substantially center, Furthermore, the through-hole 61c 61 d of the escape grooves of a thread are formed toward the front-end | tip from the side.

As shown in detail in FIG. 18, the drive mechanism 62 of the thread extracting mechanism 61 is mounted on the support 1d which stands up toward the sewing machine head 1 supporting the holding member 61g of the thread extracting mechanism 61. And a frame 62a provided, a drive lever 62b for driving the holding member 61g, a drive mechanism 62c of the drive lever 62b, and the like.

The thread lowering mechanism 64 includes a thread lowering piece 64a and a thread through hole 61c provided to the thread extracting mechanism 61 provided in the holding member 61g so as to allow swinging freely through the shaft 64c. The unscrewing piece against the force applied by the twisted spring 64b which exerts a force on the slipping piece 64a in the shielding direction, that is, in the direction of pushing down the seal 11 along the side surface of the guide member 61b. Operation piece of the thread-down piece 64a formed in the thread-down piece 64a and the frame 62a of the drive mechanism 62, respectively, in order to push up 64a and hold the thread-through hole 61c in the open state. 64d, 64e, and the like.

As shown in Fig. 18A, the thread guide mechanism 6 pushes the tip end of the driving lever 62b forward by the driving mechanism 62c, so that a hole is formed in the proximal end of the driving lever 62b. The pin 61h is pushed down along the groove 62e formed in the frame 62a by pushing down the pin 61h fixed to the holding member 61g inserted into the drilled long hole 62d. The pulling mechanism 61 is lowered through the holding member 61g which has been fixed thereon.

In this state, by pushing the front end of the driving lever 62b further forward by the driving mechanism 62c, the axis 62g of the driving lever 62b is along the groove 62e formed in the frame 62a. Advances along the groove 62h formed in the frame 62a by the pin 61h fixed by the holding member 61g inserted into the long hole 62d which is drilled in the base end side of the driving lever 62b. By pulling out, the pulling mechanism 61 is advanced through the holding member 61g which fixed the pin 61h.

In this way, the drive mechanism 62 drives the drive lever 62b by the drive mechanism 62c, thereby lowering and advancing the thread extracting mechanism 61 and guiding it by the guide member 61b. The tip of the hook member 61a passes through the invasion 10a.

By the way, when lowering and advancing the thread extraction mechanism 61, the operation piece 64d of the thread pulling down piece 64a formed in the threading down piece 64a and the frame 62a of the drive mechanism 62, respectively, ( 64e) are brought into contact with each other, and the threaded through piece 64a can be pushed up against the force applied by the twisted spring 64b to keep the thread through hole 61c open.

In this state, the thread 11 fitted by the thread fitting member 31 of the mounting mechanism 3 is pulled from the air nozzle 63 provided in the thread fitting member 31 to extract the high-pressure air. By feeding in toward, it penetrates into the through-hole 61c of the guide member 61b, and releases the end part of the thread 11 in which the thread fitting member 31 was fitted.

Thereafter, the drive lever 62b is driven by the drive mechanism 62c to retreat the thread extraction mechanism 61 so that the operation pieces 64d and 64e of the pull-out piece 64a are separated. The contact is released, the thread-down piece 64a is swung in the direction of shielding the seal through hole 61c, and both ends of the seal 11 penetrated through the seal through hole 61c are side surfaces of the guide member 61b. Of the drive lever 62b of the drive mechanism 62 while being pushed down along the way so that the thread 11 penetrated by the thread through-hole 61c is precisely hung over the hook member 61a of the thread extraction mechanism 61. Continue the drive operation. Thereby, the thread extraction mechanism 61 is retracted, and the thread 11 is extended to the hook member 61a formed in the shape of a hook by pulling the hook member 61a out of the invasion 10a. Conduct the guidance.

By the way, in the embroidery machine of the present embodiment, after the thread is guided, as shown in Figs. 14 to 15, by driving the thread selection mechanism 29 of the thread supply device 2, the state in which the thread 11 spans The actual delivery pipe 28a is moved to the first step side (right side), so that embroidery can be performed.

And the auxiliary mechanism 5 which consists of the upper thread clamp mechanism 51, the thread cutting mechanism 52, and the cutting chamber recovery mechanism 53 is provided in the path | route which the thread 11 runs over.

The upper seal clamp mechanism 51 is for temporarily clamping the seal 11 in order to prevent the new seal 11 from being released from the bobbin 21 when cutting and recovering the seal 11. As shown in FIG. 14, the movable fitting piece 51b which clamps the thread 11 between the fixed fitting piece 51a fixed to the sewing machine head 1 side, and the fixed fitting piece 51a, and a movable fitting piece, are shown. The drive mechanism 51c etc. of the piece 51b are comprised.

The thread cutting mechanism 52 is for cutting the thread 11 when the thread 11 is replaced, and as shown in Fig. 22, the fixed blade 52a and the shaft 52b fixed to the sewing machine head 1 side. ), The movable blade 52c swings around the center, and the drive mechanism 52d of the movable blade 52c.

The cutting thread recovery mechanism 53 is for recovering the yarn 11 cut by the thread cutting mechanism 52 when the yarn 11 is replaced. As shown in FIG. The operating lever 53c having the hook 53b formed thereon, the drive mechanism 53d of the operating lever 53c, and the operating lever 53c are slidably penetrated, and the cut thread 11 is drawn in. And the recovered chamber 11 provided to be detachably attached to the suction pipe 53e to be collected and recovered, the introduction pipes 53f and 53g of the high pressure air for generating a suction force to the suction pipe 53e, and the recovery mechanism body 53a. ) And a recovery container 53h formed of a mesh for storing the c).

Moreover, the cover body 8 is provided in the sewing machine head 1, as shown in FIG.

When the thread 11 is moved to the embroidery position on the first stage side (right side), the cover 11 is clamped to the cover body 8 in the path where the thread 11 is stretched. The lower clamping mechanism 81 and the sensor 82 for detecting the state of the seal 11 are provided.

The lower thread clamp mechanism 81 prevents the thread 11 below the lower thread clamp mechanism 81 from being unwound when starting embroidery, and the end of the thread 11 faces the surface of the embroidery fabric. In order to temporarily clamp the thread 11 in order to prevent it from rising, the thread 11 is fixed between the fixing fitting piece 81a and the fixing fitting piece 81a fixed to the sewing machine head 1 side. The movable fitting piece 81b to clamp, the drive mechanism 81c, etc. of the movable fitting piece 81b are comprised.

The sensor 82 which detects the state of the thread 11 optically detects unwinding the twist of the thread 11 again, stops embroidery when the return of the twist of the thread 11 occurs, and the thread (11) is exchanged to prevent the occurrence of defective products in advance, and as shown in Fig. 24, the light emitting and receiving element 82a, the light emitting and receiving element 82a, and the thread 11 face each other. It consists of the mirror 82b etc. which were provided.

25 to 32 show a second embodiment of the thread supply device 2 provided on the sewing machine head 1 of the embroidery machine.

The thread supply device 2 corresponds to the number of bobbin storage portions 22 in which a plurality of color yarn bobbins 21 can be stored, and the number of receivable bobbins 21 that are installed integrally with the bobbin storage portions 22. The plane having the rectangular tension adjusting mechanism 25, the thread length adjusting mechanism 27 for holding the thread 11 discharged toward the needle 10 at a predetermined length, and the thread feeding mechanism 28, are rectangular in shape. Of the thread guide device 7 which guides the thread adjusting mechanism 24 holding the main body 24a and the thread dispensing mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10; And a thread selector 29 for selectively positioning upward.

In this case, the number of bobbins 21 that can be accommodated in the bobbin storage portion 22 and the number of mounting force adjusting mechanisms 25 do not necessarily have to match, and the bobbin storing portion is larger than the number of mounting force adjusting mechanisms 25. By increasing the number of bobbins 21 that can be stored in (22), it is possible to replace the bobbin 21 to be mounted on the mounting force adjusting mechanism 25 with another one.

The bobbin storage portion 22 is configured to accommodate 28 bobbins 21 in total, for example, 4 × 7. The bobbin storage portion 22 has a spindle 22a for inserting and supporting the bobbin 21. In addition to the installation, a bobbin guide (not shown) suitable for the bobbin 21 used around the spindle 22a is provided, and the lead 11 is pulled out so that the thread 11 of each bobbin 21 is not entangled. The felt 22c is laid.

In the spindle 22a, a thread holding member 23 is provided, and a total of 28 threads 11 are drawn out at intervals from the thread holding member 23, and the thread adjusting unit is integrally mounted to the lower portion of the bobbin storage unit 22. Feed into the mounting force adjustment mechanism 25 of the mechanism (24).

In addition, eight of the 28 yarns 11 in total are held by the yarn holding member 23.

The seal retainer 23 includes a ceramic guide pipe (not shown) provided in the upper end opening of the spindle 22a, a hollow pipe path of the spindle 22a, a pipe member 23s in communication with the hollow pipe path, and a pipe member. It is composed of a guide tube 23t made of ceramic and the like provided at the tip opening of 23s, and the mounting force of the thread 11 of each bobbin 21 through the hollow pipe passage of the spindle 22a and the pipe member 23s. Feed into the adjusting mechanism (25).

In addition, the operation of penetrating the seal 11 through the hollow pipe passage of the spindle 22a and the pipe member 23s can be easily performed by sucking high pressure air flow together with the seal 11 from the upper end opening of the guide pipe 23q. Can be.

By the way, in this embodiment, although the bobbin storage part 22 was fixed and installed in the sewing machine head 1, it is not limited to this, As in the modified example shown to FIGS. 28-29, the bobbin storage part 22 is provided. ) Can be divided into two parts to the left and right, and the unit can be configured to be detachably mounted on the upper portion of the main body 24a having a rectangular plane.

The bobbin storage portion 22 is configured to store 10 bobbins 21 in total and 20 in total, respectively, on the left and right sides, and the bobbin 21 is inserted into the bobbin storage portion 22. While supporting the spindle 22a upright, a bobbin guide (not shown) suitable for the bobbin 21 used around the spindle 22a is provided, and the seal 11 of each bobbin 21 is provided on the bottom surface thereof. Felt 22c for drawing out is provided so that it may not become entangled.

Then, the storage stand 22d on which the spindle 22a is mounted is mounted on the guide rail 22i formed on the upper part of the thread adjusting mechanism 24 main body 24a so as to be detachably detachable.

In this case, when the holder 22d of the pipe member is separated from the holding member 23u of the pipe member in which the tip opening of the pipe member 23s communicating with the hollow pipe passage of the spindle 22a is separated, the storage table 22d is used. In the support shaft 22f installed upright, and when the storage stand 22d is attached, it can be selectively installed on the support shaft 22g which was installed on the upper part of the thread adjusting mechanism 24 main body 24a. Make sure

Moreover, when attaching the storage stand 22d to the guide rail 22i in front of the guide rail 22i, the storage stand 22d is temporarily set and the storage stand 22d along the guide rail 22i. The pipe member support frame 22h for fixing the storage stand support 22d for smoothly sliding, and supporting the pipe member 23s to prevent entanglement with adjustment of the stretched amount of the pipe member 23s. ) To be able to slide.

Moreover, as for the storage stand 22d of the bobbin storage part 22, several times the head number of the sewing machine head 1 is prepared. As a result, when the color chamber is replaced, the time required for the replacement of the color chamber can be shortened by replacing it for each storage stand 22d. For example, if the storage stand 22d of the bobbin storage part 22 of this modification is prepared twice as many as the number of heads of a sewing machine, the color thread of 40 colors can be changed in a short time. In this case, the storage stand 22d can be replaced by storing the kind (color) of each bobbin 2 stored in the storage stand 22d of the bobbin storage unit 22 in advance in the control section of the embroidery machine. In addition, many color thread exchanges can be performed automatically.

In addition, in this modification, although the storage stand 22d was attached to the guide rail 22i formed in the upper part of the main body 24a of the thread adjustment mechanism 24 so that attachment and detachment were possible, the storage stand 22d ) Can be mounted so that attachment and detachment are possible by placing the upper portion of the main body 24a of the thread adjusting mechanism 24.

The number of divisions of the bobbin storage portion 22 is not limited to two divisions, but may be three divisions or more.

By the way, in this 2nd Example, the mounting force adjustment mechanism 25 is for every thread 11 from each bobbin 21 provided in the outer surface of the main body 24a whose plane of the thread adjustment mechanism 24 is rectangular. It holds two mounting force adjusting members 25b and 25c.

In one of the mounting force members 25c, a tension sensor 25d for measuring the tension of the thread 11 is provided so that thread breakage of the thread 11 can be detected.

The signal from the tension sensor 25d is an electric signal, and the electric circuit 25g provided with the electrical contact 25f provided on the sewing machine head 1 from the electrical contact 25e provided on the thread adjusting mechanism 24. It is transmitted to the control unit of the sewing machine through the embroidery, and controls the operation of the sewing machine for sewing, and also lights the display lamp (not shown) indicating the state of the upper thread and the lower thread installed in the sewing machine head (1), etc. Notice the thread break.

In addition to the display lamp, a display device such as a liquid crystal display panel for displaying the state of the embroidery machine to an operator and an alarm device such as a buzzer can be provided at a suitable position of the embroidery machine.

Moreover, in order to prevent large resistance from acting on the thread 11 when sending the thread 11 toward the needle 10, the mounting which releases hold | maintain of the thread 11 by the mounting force adjustment member 25b. The force release mechanism 26 is provided (for details, see the mounting force release mechanism 26 of the first embodiment described above).

Moreover, to adjust the magnitude of the tension of the thread 11 applied to the sewing machine head 1 near the main body 24a of the thread adjusting mechanism 24 by two mounting force adjusting members 25b and 25c. To install the mounting force adjusting device (25h) for.

This thread tension adjusting device 25h is provided with a tension acting on the thread 11 through the cloth flat 41, the bucheon flat 42, the needle 10, and the like, which are located downward from the thread supply device 2 described later. By allowing an equal tension to act on the thread 11, the two mounting force adjusting members 25b are not connected to the thread 11, the cloth 41, the needle 42, the needle 10, or the like. ), It is possible to uniformly adjust the magnitude of the tension of the yarn 11 from each bobbin 21 applied by the 25c. Then, the mounting force adjusting mechanism 25h is provided with a magnet at the base portion, and the thread 11 from each bobbin 21 is directed toward the proper position of the sewing machine head 1, more specifically, the needle 10. ) Can be selectively detachably installed at a lower position of the actual delivery pipe 28a of the actual delivery mechanism 28 provided for transmitting the c).

The thread dispensing mechanism 28 provided on the outer surface of the main body 24a in which the plane of the thread adjusting mechanism 24 is rectangular is for smoothly dispensing the thread 11 toward the needle 10, so that the thread 11 is removed. The yarn guide device is connected to the yarn 11 by a yarn discharge pipe 28a leading to the yarn guide device 7 above, a high pressure air supply pipe 28f connected to a high pressure air source (not shown), and a high pressure air stream. The air nozzle 28b etc. for sending out toward 7 are hold | maintained.

And the air nozzle 28b is fixed so that the opening end part of the air nozzle 28b may be located in the vicinity of the upper opening part of the actual delivery pipe 28a, and it will be in the position which embodies the upper direction of the thread guide apparatus 7, and embroiders. The high pressure air supply pipe 28f is slidably installed so that the high pressure air can be supplied from the high pressure air supply pipe 28f to the air nozzle 28b of the actual delivery pipe 28a.

In addition, the high pressure air supply pipe 28f and the air nozzle 28b allow the high pressure air supply pipe 28f to slide, so that the high pressure air supply pipe 28f and the air nozzle 28b, etc., as shown in this embodiment are In addition to being configured to be inserted, the high pressure air supply pipe 28f and the air nozzle 28b are connected in a hermetic shape by a seal member provided at the open end of the high pressure air supply pipe 28f and the air nozzle 28b. can do.

The thread selection mechanism 29 is a thread guide device 7 for guiding the thread delivery pipe 28a of the thread delivery mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10. By selectively positioning upwards, the thread adjusting mechanism 24 is attached to the sliding shaft 29i provided on the sewing machine head 1 together with the bobbin storage portion 22 so as to freely slide in a horizontal plane. The main bodies 24a of the adjacent thread adjusting mechanisms 24 are connected to each other by the connecting member 24e, and the main bodies of all the thread adjusting mechanisms 24 are moved along the sliding shaft 29i by a driving source (not shown). 24a of the thread guide device 7 which slides in conjunction with each other, and thread guides the threaded discharge pipe 28a of the threaded discharge mechanism 28 corresponding to the required bobbin 21 with a predetermined needle 10. It is configured to be accurately positioned upwards.

In this case, the thread selection mechanism 29 is controlled by the control unit of the sewing machine for embroidery, and the type (color) of each bobbin 21 stored in the bobbin storage unit 22 is stored in advance in the control unit. Allows automatic selection of multiple color threads.

In addition, the structure of the thread length adjustment mechanism 27 etc. which are provided below the mounting force adjustment mechanism 25 is the same as that of 1st Example mentioned above.

Next, a second embodiment of the thread guide device 7 comprising a mounting mechanism 3 and a thread guide mechanism 6 provided below the thread supply device 2 of the sewing machine head 1 of the embroidery machine. Are shown in FIGS. 33 to 40.

33 to 34, the mounting mechanism 3 guides the end of the yarn 11, the predetermined length of which extends from the actual delivery pipe 28a of the yarn supply device 2, to the position near the needle 10. As shown in FIGS. By doing so, the thread-fitting member 31, the lever 32 having the thread-fitting member 31 at the tip, the sliding piece 33 supporting the base end of the lever 32, and the sliding piece 33 Guide grooves formed in the up-and-down direction substantially in the mounting mechanism main body 30 which inserts and inserts the belt 35 which raises and lowers the roller 32b installed in the intermediate position of the lever 32, and regulates the swing angle of the lever 32. 37 and a drive mechanism 38 for driving the belt 35.

Thus, by configuring the mounting mechanism 3 with the lever 32, the sliding piece 33 which elevates, etc., the mounting mechanism 3 can be miniaturized, In particular, the sewing machine of the thread fitting member 31 is carried out. The amount of protrusion toward the front of the head 1 can be reduced.

The mounting mechanism 3 drives the belt 35 so that the thread-fitting member 31 is moved from the standby position (the sliding piece 33 is the position of the position sensor 39c) to approximately the middle of the thread-fitting member 31. Through the open position (the sliding piece 33 is the position of the position sensor 39b), the most elevated position (sliding piece 33) is inserted into the end of the thread 11 slack from the actual delivery pipe 28a. Position), the shoe member is swingably provided on the bracket protruding from the sewing machine head so that the thread fitting member 31 automatically fits the end of the thread 11, and the thread member The roller 31f provided at the distal end of the operation piece protruding from the movable fitting piece of the fitting member 31 comes into contact with the movable fitting piece 31a and is fixed by opening the movable fitting piece 31a against the force applied by the spring member. After passing through the end part of the thread 11 extended from the actual delivery pipe 28a between the fitting pieces 31b, the shoe member is removed. The thread which is oscillated by the drive mechanism, releases contact between the shoe member and the operation piece, returns the movable fitting piece 31a, and penetrates between the movable fitting piece 31a and the fixed fitting piece 31b ( 11) (same as the first embodiment described above).

Then, by driving the belt 35 in this state, the thread fitting member 31 is moved from the highest position (the sliding piece 33 is the position of the position sensor 39a) to the lowest position (the sliding piece 33 is the position sensor). (D) (39d), guides the thread (11) guided to the position near the needle (10) to the invasion (10a), and guides the thread, and then the thread (11) into which the thread fitting member (31) is fitted. An operating member is pivotably provided below the mounting mechanism main body 30 so as to free the end of the mounting mechanism, and protrudes to the movable fitting piece 31a of the thread-fitting member 31 by this operating member. The roller 31f provided at the tip of the operation piece is pressed to open the movable fitting piece 31a in response to the force applied by the spring member (as in the first embodiment described above).

Moreover, the drive mechanism 38 is comprised so that a rotating motor 38a of the belt 35 can be selectively driven by the motor (not shown) to the positive, reverse, and both directions.

In addition, the installation positions of the position sensors 39, 39b, 39c, and 39d can be adjusted appropriately.

In addition, as a mechanism for supplying high pressure air to the air nozzle 63 provided in the thread fitting member 31, the air nozzle 63 is connected directly to a high pressure air source (not shown) via a high pressure air supply pipe. When the thread fitting member 31 moves to the lowest position (the sliding piece 33 is the position of the position sensor 39d), the air nozzle 63 and the high-pressure air supply pipe installed on the fixed side are inserted and inserted. Alternatively, as shown in FIG. 34, the air nozzle 63, the high pressure air supply pipe 63a, and the like are connected to each other by a seal member provided at the open end of the air nozzle 63 and the high pressure air supply pipe 63a. Can be.

By the way, in this embodiment, although the opening / closing operation | movement of the fitting member 31 of the mounting mechanism 3 is comprised by the shoe member and operation member provided in the upper part and the lower part of the mounting mechanism main body 30, It is not limited to this, The twisted spring 31j which applies a force in the direction which closes the thread fitting member 31 between the movable fitting piece 31a and the fixed fitting piece 31b like the modified example shown to FIGS. 35-36. ) To form the thread fitting member 31, and to open and close the thread fitting member 31 to the upper and lower portions of the mounting mechanism main body 30, and an appropriate operation member 31h and its driving mechanism 31i. It can be configured to carry out by.

The thread 11 installed between the actual delivery pipe 28a of the thread supply device 2 and the position near the needle 10 by the mounting mechanism 3 is a flat surface 41 of the flat mechanism 4. ) And bucheonpyeong 42.

In the present embodiment, three sets of the flat mechanism 4 and the needles 10 corresponding to the flat mechanism 4 are provided, and the frame 1c on which the needles 10 are provided is swinged in a horizontal plane. Although it is comprised so that the tide of the needle 10 attached to the frame 1c may increase or decrease, the structure 1c may be comprised so that the frame 1c may oscillate in a horizontal plane.

In the cloth flat 41, there is formed a cut portion 41b for inserting the threading hole 41a at the tip end thereof and inserting the drive pin 41c of the cloth flat 41 at the base end thereof.

Bucheonpyeong 42 has a ring-shaped thread hook hole 42a, a lever 42b provided with thread hook hole 42a at the tip end, and a sliding piece 42c for supporting the lever 42b freely. The guide pipe 42d of the sliding piece 42c and the sliding piece 42c provided to the mounting mechanism main body 30 in the substantially up-down direction are attracted to the thread fitting member 31 of the mounting installation mechanism 3, The magnet piece 42e for raising and lowering along the guide pipe 34 in accordance with the lifting and lowering of the fitting member 31 and the roller 42f provided at the other end of the lever 42b are in contact with each other to regulate the position of the thread hook hole 42a. The spring member 42h for contacting the shoe member 42g and the roller 42f provided at the other end of the lever 42b to contact the shoe member 42g for regulating the position of the threading hole 42a. It consists of.

For this reason, the thread 11 spans the thread-hanging hole 41a of the cloth flat 41 and the thread-hanging hole 42a of the bucheon flat 42, and embroidery is performed in the state maintained in the required zigzag shape.

And when embroidering, the cloth flat 41 is reciprocally driven by the drive mechanism similar to the conventional sewing machine for embroidery, while the bucheon flat 42 is maintained in the standby position of a bottom dead center.

In addition, their configuration and operation are the same as those of the first embodiment described above.

The basic configuration of the thread guide mechanism 6 is the same as that of the first embodiment described above, but among these, the thread lowering mechanism 64 is, as shown in FIG. 37, through the shaft 64c by the thread extraction mechanism 61. The tip end 64f of the thread pushing down piece 64a provided so that the swing is free is formed in the shape of a hook so that the thread 11 over the hook member 61a does not come off from the hook member 61a.

By the way, in the present embodiment, the thread lowering mechanism 64 is used so that the thread 11 is securely caught by the hook member 61a of the thread extracting mechanism 61 of the thread guide mechanism 6. However, the present invention is not limited thereto, and air nozzles 65a and 65b are provided on the guide members 61b and 61b side of the thread extracting mechanism 61, as shown in the modification shown in FIG. By discharging high-pressure air downward from 65a) and 65b, it can be comprised so that the both sides of the chamber 11 which penetrates into the thread through-hole 61c of the thread extraction mechanism 61 may be pushed down.

In the embroidery machine of the present embodiment, the thread 11 is driven by driving the thread selecting mechanism 29 of the thread supply device 2 after the thread guide is performed, similarly to the embroidery machine of the first embodiment. In this state, the discharge pipe 28a of the yarn is moved to the first stage side (right side) to perform embroidery.

And the auxiliary mechanism which consists of an upper thread clamp mechanism, a thread cutting mechanism, and a cutting chamber collection | recovery mechanism 53 is provided in the path | route which the thread 11 runs over.

Among them, the cutting chamber recovery mechanism 53 is for recovering the yarn 11 cut by the thread cutting mechanism when the yarn 11 is replaced, and as shown in Figs. An operating lever 53c provided with a hook 53b that spans the 11, a drive mechanism 53d of the operating lever 53c, and an operating lever 53c are slidably penetrated, and a cut thread ( 11) suction pipes 53e and 53i which draw in and recover the high-pressure air introduction pipes 53f and 53g for generating suction force or power output to the suction pipes 53e, 53i and 53j. And a recovery container 53h formed of a net body for storing the recovered chamber 11 detachably installed at the distal end of the suction pipe 53j and the recovery mechanism body 53a around the swing shaft 53m. And a drive mechanism 53k for oscillating and driving between the standby position and the recovery position of the seal 11.

In addition, in the embroidery machine of the present embodiment, a cover body is attached to the sewing machine head 1 in the same manner as the embroidery machine of the first embodiment described above, and the cover body is actually delivered in a state in which the thread 11 is stretched. When the pipe 28a is moved to the embroidery position on the one-step side (right side), the state of the lower thread clamp mechanism and the thread 11 that clamp the thread 11 in the path where the thread 11 extends is detected. Install the sensor.

Next, an operation method of the embroidery machine of the present embodiment (first embodiment and second embodiment) will be described.

First, the operation method before the embroidery is explained.

When starting embroidery, the bobbin thread 21 is accommodated in the bobbin accommodation portion 22 of the thread feeder 2 provided on the sewing machine head 1 of the sewing machine or separately. The thread 11, which has been unwound, from the thread 11 through the thread holding member 23, is placed on the mounting force adjusting mechanism 25, and the end of the thread 11 is stretched a predetermined length from the thread sending pipe 28a.

Next, a description will be given of an operation method when starting embroidery.

By driving the thread supply device 2 over the thread 11 to the thread selector 29, the thread feed pipe 28a of the thread feed mechanism 28 corresponding to the required bobbin 21 is thread guided. Selectively and accurately positioned above the thread guide device 7 to be implemented.

Next, the belt fitting of the mounting mechanism 3 is driven while supplying the high pressure air from the air nozzle 28b into the actual delivery pipe 28a, whereby the thread fitting member 31 is held in the vicinity of the intermediate position. From the position, the end of the yarn 11 is sandwiched by the thread fitting member 31 by moving to the uppermost position where the end of the yarn 11 hangs from the yarn delivery pipe 28a.

Then, the thread length adjusting piece 27c of the thread length adjusting mechanism 27 is removed while the resistance by the mounting force adjusting mechanism 25 does not act on the thread 11 by the mounting force release mechanism 26. By advancing, the thread 11 is kept at a predetermined length, and the belt 35 of the mounting mechanism 3 is driven to lower the thread fitting member 31 to move the end of the thread 11 to the thread guide position. Guide to the near position of the needle (10).

At this time, the thread 11 installed between the threaded delivery pipe 28a and the position near the needle 10 in the thread guide position by the mounting mechanism 3 is the flat surface of the planar mechanism 4. 41) and bucheonpyeong 42.

Next, by releasing the mounting force release mechanism 26, the tip of the hook member 61a is needled by lowering and advancing in advance while the resistance by the mounting force adjustment mechanism 25 acts on the thread 11. A thread inserted through the thread fitting member 31 of the mounting mechanism 3 as a thread through hole 61c of the guide member 61b of the thread extracting mechanism 61 which has penetrated through the invasion 10a of (10). (11) is penetrated by feeding high-pressure air from the air nozzle (63) provided in the thread fitting member (31) toward the thread extracting mechanism (61), and the thread length adjusting piece of the thread length adjusting mechanism (27). By retracting 27c, it is possible to feed the retained yarn 11, release the thread 11 by the thread-fitting member 31, and of the required length held by the thread length adjusting mechanism 27. The thread 11 passes through the thread through hole 61c of the guide member 61b of the thread extracting mechanism 61.

After stopping the supply of the high pressure air from the air nozzle 63, the thread extracting mechanism 61 is retracted, and the thread pulling piece 64a is swinged in the direction of shielding the thread through hole 61c. The both ends of the thread 11 penetrated by the thread through hole 61c are pushed down along the side surface of the guide member 61b, so that the thread 11 penetrated through the thread through hole 61c is unthreaded. The thread guiding mechanism 61 is retracted while the hook member 61a is retracted accurately, and the thread member is guided by pulling the hook member 61a out of the invasion 10a.

In this case, the thread selection mechanism 29 of the thread supply device 2 is driven at an appropriate time, so that the thread delivery pipe 28a is moved to the first stage side (right side) in a state where the thread 11 is stretched. .

Next, by driving the belt 35 of the mounting mechanism 3, the thread fitting member 31 is returned to the standby position near the intermediate position to start embroidery.

In addition, when starting embroidery, the thread 11 is temporarily clamped by the lower thread clamp mechanism 81, thereby preventing feeding out of the thread 11 below the lower thread clamp mechanism 81. This prevents the end of the thread 11 from protruding to the surface of the embroidery fabric.

Next, the clamp of the thread 11 by the lower thread clamp mechanism 81 is released, and embroidery is performed.

When the seal 11 is to be replaced, the thread 11 is clamped by the upper thread clamp mechanism 51, and the cutting chamber recovery mechanism ( The thread 11 is hooked on the hook 53b formed at the tip of the operating lever 53c of 53), and the thread 11 is cut back and forth with each other in the downward direction of the needle plate and the thread cutting mechanism 52, and is cut. The collected chamber 11 is recovered into the recovery container 53h through the suction pipe 53e of the cutting chamber recovery mechanism 53.

In the following, the process of performing thread guidance and embroidery is similarly repeated.

According to the thread guide device of the sewing machine for embroidery of the present invention, the processing when changing the color thread or when the thread is cut can be performed automatically without one hand, and the time required for it can be shortened. Thereby, since the operation rate and productivity of a sewing machine can be improved, it can especially be used suitably for the embroidery machine which frequently replaces many color yarns.

Claims (3)

The thread fitting member which fits the edge part of the thread extended from a thread sending pipe is guided, The thread inserted by the thread fitting member is guided to the vicinity of a needle, and a long thread is made to hang over a flat mechanism. Thread guide device for embroidery sewing machine, characterized in that the mounting mechanism and the thread guide mechanism for inducing the thread to invade. The thread extracting mechanism according to claim 1, wherein the thread guide mechanism includes a hook member having a tip end in a hook shape, a thread through-hole provided on both sides of the hook member, and a guide member formed with thread escape grooves; Thread guide device of an embroidery sewing machine, characterized in that made of an air nozzle for feeding the thread inserted by the thread fitting member to the through-hole formed in the guide member of the thread extraction mechanism. 3. Embroidery for embroidery according to claim 1 or 2, characterized in that a thread pushing-down mechanism is provided for pushing both ends of the thread penetrated by the thread through hole formed in the guide member of the thread guide mechanism along the side of the guide member. Thread guide device of sewing machine.